CN1886774B - 具有老化补偿的oled显示器 - Google Patents

具有老化补偿的oled显示器 Download PDF

Info

Publication number
CN1886774B
CN1886774B CN200480034871XA CN200480034871A CN1886774B CN 1886774 B CN1886774 B CN 1886774B CN 200480034871X A CN200480034871X A CN 200480034871XA CN 200480034871 A CN200480034871 A CN 200480034871A CN 1886774 B CN1886774 B CN 1886774B
Authority
CN
China
Prior art keywords
oled
display
signal
controller
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200480034871XA
Other languages
English (en)
Other versions
CN1886774A (zh
Inventor
A·D·阿诺
R·S·科克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global OLED Technology LLC
Original Assignee
Global OLED Technology LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global OLED Technology LLC filed Critical Global OLED Technology LLC
Publication of CN1886774A publication Critical patent/CN1886774A/zh
Application granted granted Critical
Publication of CN1886774B publication Critical patent/CN1886774B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/02Details
    • H05B3/06Heater elements structurally combined with coupling elements or holders
    • H05B3/08Heater elements structurally combined with coupling elements or holders having electric connections specially adapted for high temperatures
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0842Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0285Improving the quality of display appearance using tables for spatial correction of display data
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/029Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/029Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/041Temperature compensation
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • G09G2320/045Compensation of drifts in the characteristics of light emitting or modulating elements

Abstract

一种有机发光二极管(OLED)显示器,包括:OLED阵列,各OLED具有两个终端;用于各OLED的电压传感电路,包括连接于相应OLED的终端之一的各电路中的晶体管,用于感应横跨该OLED的电压从而产生代表横跨该OLED的电压的反馈信号;和响应于该反馈信号的控制器,用于计算用于各OLED的校正信号并将该校正信号施加到用于驱动各OLED的数据从而补偿各OLED的输出中的变化。

Description

具有老化补偿的OLED显示器
发明领域
本发明涉及固态OLED平板显示器,且更具体而涉及具有补偿该有机发光显示器老化的装置的显示器。
发明背景
固态有机发光二极管(OLED)显示器作为优异的平板显示器技术而言具有重要意义。这些显示器利用通过有机材料薄膜的电流以产生光。发射出的光的颜色和从电流至光的能量转化效率由该有机薄膜材料的组成决定。不同的有机材料发射不同颜色的光。然而,随着该显示器的使用,该显示器中的有机材料老化并且不那么有效地发射光。这减少了该显示器的寿命。不同的有机材料可以以不同速率老化,引起有差别的颜色老化并且显示器白点随着显示器的使用发生变化。此外,各单独的像素可能以与不同于其它像素的速率老化,导致显示不均匀性。
该材料老化的速率与通过该显示器的电流量相关,且因此与从该显示器发出的光数量相关。补偿这种在聚合物发光二极管中的老化效果的技术记载于2002年9月24日授予Sundahl等的US6456016之中。该方法依赖于在使用早期受控地减少提供的电流,随后在第二阶段该显示器输出逐渐降低。这种方案需要在控制器内用计时器追踪显示器的操作时间,然后该控制器提供补偿量的电流。而且,一旦显示器被使用,该控制器必须与该显示器相连从而避免显示器操作时间中的误差。
该技术的缺点在于没有良好地表现出小分子有机发光二极管显示器的性能。而且,该显示器的使用时间必须被累计,需要在控制器内计时、计算、和存储电路系统。而且,该技术并未调节该显示器在不同亮度和温度水平的行为差别并且不能调节该不同有机材料的有差别的老化速率。
2002年7月2日授予Shen等的US6414661B1描述了一种方法和相关系统,其补偿了单个有机发光二极管(OLED)在OLED显示器中的发光效率的长期变化,通过基于施加到该像素的累计驱动电流来计算并预测各像素的光输出效率中的衰减并且得出了施加到每个像素的下一驱动电流的相关系数。该技术需要施加到各像素的驱动电流的测量和积累,需要必须随着该显示器的使用而连续更新的储存记忆、需要复杂和大量的电路系统。
2002年11月14日公布的Everitt的美国专利申请2002/0167474A1描述了用于OLED显示器的脉冲宽度调制驱动器。视频显示器的一个实施方案包括用于提供选定电压的电压驱动器来驱动视频显示器内的有机发光二极管。该电压驱动器可接收来自说明了老化、列电阻、行电阻、和其它二极管特征的校正表的电压信号。在本发明的一个实施方案中,该校正表在常规电路运作之前和/或期间计算。既然该OLED输出光水平被假定与OLED电流呈线性关系,则该校正图基于发射出持续时间足够长以允许该瞬态平稳的已知电流通过该OLED二极管并且随后用位于该列驱动上的数字模拟转换器(A/D)测量相应的电压。校准电流源和该A/D可通过切换矩阵切换到任一列。该设计需要使用集成的校准电流源和A/D转化器,这极大地增大了该电路设计的复杂性。
2003年授予Narita等的US6504565B1描述了一种发光显示器,其包括通过排列许多发光元件而形成的发光元件阵列,用于驱动该发光元件阵列以便从每一发光元件发光的驱动单元,用于储存该发光元件阵列的每一发光元件的发光数目的记忆单元,和用于基于记忆单元中储存的信息而控制该驱动单元使得从每一发光元件的发光数量保持恒定的控制单元。也公开了采用该发光显示器的曝光显示器和采用该曝光显示器的成像装置。该设计需要使用响应于送至每一像素的每一信号的计算单元以记录其使用,这极大地增大了该电路设计的复杂性。
2002年9月27日公开的Numeo Koji的JP2002278514A记载了一种方法,其中通过电流测量电路将指定电压施加到有机EL元件并且测量该电流量;且温度测量电路估计该有机EL元件的温度。比较施加到该元件的电压值,由于预定的相似组成的元件老化导致的变化,由于电流-亮度特征的老化导致的变化以及为估计这些元件的电流-亮度特征的特征测量时的温度。然后,改变在显示显示器数据期间供应到这些元件的电流量的总和,从而获得最初显示的亮度,这基于电流-亮度特征的估计值、在这些元件中流动的电流值、和该显示器数据。
该设计假定了像素的可预测的相关利用并且并未调节像素组或单个像素的实际利用率上的差别。因此,对于颜色或空间组的准确修正可能随着时间而变得不准确。而且,需要在该显示器内集成温度和多个电流传感电路。该集成是复杂的,减少了制造产率,并且占用显示器内的空间。
2003年7月3日公开的Ishizuki等的题为“Panel Display DrivingDisplay And Driving Method”的美国专利申请2003/0122813 A1公开了用于提供高质量图像而且甚至在长期使用后也没有不规则发光的显示平板驱动设备和驱动方法。当引起携带各像素的各发光元件相继独立发光时,测量该发光驱动电流的值,随后基于上述发光驱动电流值,结合相应于输出像素数据的像素对每一个输出像素数据校正该发光度。根据另一方面,以这样的方式调节该设备电压的电压值:使得在各测量的发光驱动电流值中的一个数值与预定的参考电流值相等。根据另一方面,在对应于该显示平板的漏电流的补偿电流成分被加到从该驱动电压发生电路输出的电流时,测量该电流值并且将所得电流供应到各像素部分。
该设计假定外部电流检测电路足够灵敏,可检测到显示器中由于单个像素的功率利用产生的相对电流变化。这种电路难以设计并建造昂贵。而且,该测量技术要重复进行且因此缓慢并依耐于电压源驱动,而OLED显示器优选利用恒定电流源进行控制。
因此需要一种改进的老化补偿方法来用于有机发光二极管显示器。
发明概要
根据本发明通过提供这样的有机发光二极管(OLED)显示器从而符合了该需要,其包括OLED阵列,各OLED具有两个终端;用于各OLED的电压传感电路,其包括连接于相应OLED的终端之一的各电路中的晶体管,用于感应横跨该OLED的电压从而产生代表横跨该OLED的电压的反馈信号;和响应于该反馈信号的控制器,用于计算用于各OLED的校正信号并将该校正信号施加到用于驱动各OLED的数据从而补偿各OLED的输出中的变化。
优点
本发明的优点是补偿该显示器中有机材料的老化的OLED显示器,其勿需昂贵或复杂的电路系统来累积对显示器发光元件的利用或操作时间的连续测量,其带有恒定的电流像素驱动电路,和利用简单的电压测量电路。
附图简述
附图1a是根据本发明一个实施方案具有反馈和控制电路的OLED像素的示意图;
附图1b是根据本发明的备选反馈电路的示意图;
附图2是根据本发明的OLED显示器的示意图;
附图3a和3b是用于根据本发明的OLED显示器的备选反馈和控制电路的示意图;
附图4是阐述OLED显示器老化的示意图;
附图5是阐述本发明用途的流程图;和
附图6是代表适用于本发明的现有技术OLED结构的示意图。
发明详述
参考附图1a,根据本发明一个实施方案的有机发光二极管(OLED)显示器包括OLED发光元件10的阵列(只显示了其中之一);包括晶体管12的电压传感器,其感应横跨该OLED的电压以产生代表横跨该一个或多个OLED显示器的电压的反馈信号14;和控制器16,用于控制该有机发光二极管显示器并响应于输入信号26和反馈信号14,用于计算该一个或多个OLED显示器的校正控制信号24并将该校正控制信号24施加到该OLED显示器,其补偿该一个或多个OLED显示器10的输出变化。连接于晶体管12和接地之间的负荷电阻15产生与横跨OLED10的电压成比例的电压。附图1b阐述了该电压传感器的备选构型。在该实施方案中,该负荷电阻15连接于电源Vdd而非接地。该负荷电阻可以在多种位置提供,包括在控制器中。在附图1a和1b中显示的实施方案中,可给各待测量的OLED或OLED组提供单独的反馈信号14。
参考附图2,在基材20上形成显示器,包括响应于控制器16产生的校正控制信号24的OLED发光元件10的阵列22。该控制器16响应于输入信号26和反馈信号14。在基材20上用于驱动该发光器10的控制装置,例如晶体管和电容器,可作为合适的控制器16被提供并且是本领域公知的。该反馈信号14从该OLED发光器10的终端之一获得;另一终端连接于基材20上可得的或由控制器16提供的已知电压,例如接地或其它具体电压。
根据本发明的一个实施方案,该控制器16包括选择性激活阵列22中所有发光器10并且响应于该反馈信号的装置,用于计算该选择性激活的发光元件10的校正信号。该控制器16将该校正信号施加于输入信号26来产生补偿该选择性激活的发光器的输出变化的校正信号24。
在一个实施方案中,本发明可用于彩色图像显示器,该显示器包括像素阵列,每个像素包括许多不同的有色发光元件10(例如红、绿和蓝),其由该控制器16单独控制来显示色彩图像。该有色发光元件10可由不同的有机发光材料形成,该材料发出不同颜色的光,备选地,这些元件可由相同的有机发白光材料形成,在其上各自具有彩色滤光片以产生不同颜色。在另一实施方案中,该发光元件10是显示器内单独的图形元件并且可能并非以规则阵列(未示出)组织。在任一实施方案中,该发光元件可能具有无源或有源矩阵控制,并且可能具有底部发射或顶部发射结构。
如附图3a所示,可使用用于控制反馈信号14输出至该控制器的备选装置,例如采用选择信号30或选择晶体管32。该选择信号可以是与用于控制该发光器10的激活相同的信号,或备选地,可以是单独的信号。在该实施方案中,并不需要连接各个OLED的单独连线。参考附图3b,具有发光器10(未示出)的像素40的阵列22排列成组(例如行或列),而在单根线上结合反馈信号输出14,从而使得该实施方案适用于具有大量OLED的显示器。在该设置中,像素40中的发光器10的行可被赋能并同时选定。每一列的反馈信号14可存储进入模拟移位寄存器42并且计时移出该显示器并进入使用本领域公知装置的控制器。其它电路设置也是可能的,例如多路器。也可以给像素40中具有共同反馈信号线14的发光器10赋能并进行选择,在该情况下该反馈信号合并成单一反馈信号并且直接或者通过例如移位寄存器42的电路输出到控制器16。
参考附图4,显示了阐述当电流通过该OLED时OLED显示器的典型光输出的图。如通过随时间或累积电流变化的亮度输出来表示的,该三条曲线表示了发射不同有色光的不同发光器(例如R,G,B分别代表红、绿、和蓝光发射器)的典型性能。正如从该曲线中可见的,在不同有色发光器中亮度的衰减可以是不同的。该区别可以是在不同有色发光器中所用材料的不同老化特性所致,或者由于该不同有色发光器的不同利用率所致。因此,在没有老化校正的常规使用中,该显示器将变得较暗,并且该显示器的颜色,尤其是白点,将会位移。
OLED的老化与通过该OLED的导致性能降低的累积电流相关,而且,该OLED材料的老化导致OLED表观电阻的增加,其引起在给定电压下通过该OLED的电流的降低。该电流降低直接相关于给定电压下OLED的亮度降低。除了该OLED电阻随着使用而发生变化以外,该有机材料的发光效率减少。
通过用给定反馈信号14测量该亮度降低和其与通过OLED的电流降低的关系,可确定为引起该OLED发光元件10为给定输入信号26而输出额定亮度所需的校正信号24的变化。这些变化可被该控制器16用来将光输出校正为该所需额定亮度值。通过控制应用于OLED发光器的信号,获得了具有恒定亮度输出和在给定亮度下寿命增加的OLED发光器。
参考附图5,本发明操作如下。在使用显示器之前,将给定输入信号施加50到一个或多个发光元件10,测量52来自发光元件10的亮度和产生相应反馈信号14。该相应反馈信号14被感应并且储存54于控制器16中。为各发光器10在所需亮度水平范围内产生的各输出水平而重复该过程56。一旦在控制器16中储存了54各发光器10和各所需亮度输出水平的数据,则产生58相关于各输入信号26、校正信号24和所需亮度水平的转换表。这些校正可以单独应用于各发光器10或者将平均校正应用于所有发光器10。该校正可以采用利用本领域中的公知技术的查找表来实施。该显示器随后可付诸应用。
在使用时,输入信号被施加60到该控制器16。该控制器16校正了每个发光器的输入信号以形成被施加64到该显示器的校正信号62,并且重复该过程。该显示器可周期性地重新校准以补偿可能出现的任何增加的老化。将显示器从使用中临时取出并且再次执行附图5中所示的校准过程。该显示器随后返回使用从而随着各新的输入信号被施加60,该控制器形成62新的校正信号并且将该校正信号施加64到该显示器。该重新校准过程可以以系统设计所定的间隔执行,例如在具体的使用时间之后,在电源开或闭时。使用本发明,避免了显示器的连续监测。
随着时间推移该OLED材料将老化,OLED的电阻会增加,用于任何给定输入信号的电流将降低并且反馈信号将增加。在某些时间点,控制器16将不再能够提供足够大的信号,并且该发光器将达到其寿命终点并不再符合其亮度或色彩规格。然而,该发光器将继续随着其性能下滑而操作,因此提供了温和的下降。而且,在发光器无法满足其规格要求之时给该显示器用户提供信号,此时计算到最大校正,提供对该显示器性能的有用反馈。该控制器可允许该显示器亮度缓慢下降,同时使得任何差异色彩位移最小化。备选地,该控制器可减少色素与色素间的多变性,同时允许该亮度随着使用而缓慢下降。这些技术也可结合使用使得该显示器在缓慢变劣的同时使得差异色彩位移最小化并且允许该亮度缓慢地随时间下降。老化的亮度损失速率可基于预期利用率而进行选择。
OLED发光器与驱动电路相连。本发明可用于很多种发光器电路,包括电压控制(如附图1所示)或电流控制(未示出)。目前的控制技术提供了更加均一的发光器性能,但是实施或校正更加复杂。
本发明构造简单,仅需要(除了常规显示控制器以外)电压测量电路、各OLED或OLED列的额外连线、为模型实施信号校正的转换工具(例如查找表或放大器)、用于确定针对给定输入信号的校正的计算电路。不需要电流的累加或时间信息。尽管该发光器必须周期性地从应用中取出以执行校正,但是校正之间的周期可以相当大,例如应用的数日或数十小时。
本发明可用于校正有色发光显示器的颜色变化。如参考附图4所述,随着电流通过像素中的各种发光元件,用于各色发射器的材料将不同程度地老化。通过形成包括所有给定颜色的发光元件的组,并且通过测量用于该组的显示器所用的平均电压,可计算出用于给定颜色的发光元件的校正。可对各颜色采用单独的模型,因此维持该显示器的一贯颜色。该技术将用于依赖不同颜色的发射器的显示器,或依赖于单一的白色发射器,其与彩色滤光片阵列一起使用,以提供有色光发射元件。在后者的情况下,代表了各颜色的效率损失的校正曲线是完全相同的。然而,这些颜色的应用可以不必相同,因此对于各颜色的单独校正仍然是维持显示器恒定亮度和显示白点所必需的。
本发明可扩展到包括经校正的图像信号、经测量的电压、和材料的老化之间的复杂关系。可根据多种显示亮度输出而采用多种输入信号。例如,不同的输入信号可对应于各显示器输出亮度水平。当周期性计算校正信号时,通过利用不同给定输入信号可获得针对各显示器输出亮度的单独的校正信号。然后针对各显示器所需输出亮度水平采用单独的校正信号。在此之前,针对各发光器组,例如不同的发光器颜色组可以这么作。因此,可随着各材料老化针对各颜色的各显示器输出亮度水平校正该校正信号。
可采用单独的发光器和输入信号来计算显示器的校正信号,提供空间特异性校正。这样,该校正信号可用于具体的发光器,使得若小部分发光器更加迅速地老化,例如若它们使用得更加剧烈(图像用户界面的图标也许会如此),则它们可以以不同于其它发光器的方式校正。因此,本发明可校正具体发光器或者空间上独立的发光器组和/或有色光发光器组的老化。唯一需要的是校正模型应当根据用于各发光器或发光器组的老化的经验得出,并且周期性的校正信号计算可以通过驱动待校正的发光器而执行。
校正计算过程可以在使用期间周期性地执行,在电源开或闭时。校正计算过程可仅耗时数毫秒从而对任何用户的影响有限。备选地,校正计算过程可响应于提供给控制器的用户信号而执行。
OLED显示器散发大量的热并且当长时间使用后变得非常热。申请人的进一步试验已确定了在显示器所用温度和电流之间存在强烈相关性。因此,若该显示器使用一段时间,则该显示器的温度在计算校正信号时可能需要被考虑进来。若假设该显示器并未使用或者若该显示器被冷却,则可假定该显示器是处于预定的环境温度,例如室温。若校正信号模型在该温度下确定,则可忽略与该温度的关系。若该显示器在电源打开时被校正并且校正信号模型在环境温度下确定,这是在大多数情况下的合理假设。例如,具有相对频繁且短暂的利用时期的移动显示器可能不需要温度校正。长期使用显示器的显示器应用中,例如监测器、电视、或灯可能需要温度调节,或者可以在电源打开的时候被校正以避免显示器温度问题。
若显示器在电源关闭的时候被校准,则该显示器可能比环境温度热得多,优选通过包括温度效应来调节该校准。这可通过测量该显示器的温度而实现,例如用置于该基材上或者显示器盖上的热电偶23(参见附图2),或者温度传感元件例如电热调节器,其被集成到该显示器的电子仪器中。对于一直使用的显示器,该显示器可能在远高于环境温度下操作。该显示器的操作温度可被考虑入显示器校准中并且也可用于确定该像素老化的可能速率。对于像素老化的速率的估计可用于选择该显示器设备的合适校正因素。
为进一步减少由不准确的电流读数或者不充分补偿的显示器温度造成问题的可能性,对用于输入信号的校正信号的变化可由控制器限制。任何校正方面的变化可限制在例如5%变化的幅度。经计算的校正信号也可被限制成单调增加,因为该老化过程不会逆转。校正变化也可随时间平均化,例如指示的校正变化可以用之前的值来平均从而减少多变性。备选地,实际校正可仅在数次读数之后得出,例如每次当显示器打开电源时,执行校正计算并且将一些计算出的校正信号(例如10个)进行平均,从而产生用于该显示器的实际校正信号。
校正图像信号可以采用多种形式,取决于OLED显示器。例如,若用模拟电压水平指明该信号,则校正将修改信号电压。这可采用本领域公知的放大器来实行。在第二实施例中,若采用数字值,例如响应于在有源矩阵发光元件位置沉积的电荷,可采用查找表来将该数字值转变为本领域公知的其它数字值。在典型的OLED显示器中,可采用数字或模拟视频信号来驱动显示器。实际的OLED可以是电压或电流驱动的,取决于用于将电流通过OLED的电路。而且,这些技术在本领域中公知。
用于调节输入图像信号以形成校正图像信号的校正信号可用于执行很多种随时间变化的显示器性能属性。例如,用于提供校正信号给输入图像信号的模型可以使得显示器的平均亮度或者白点保持恒定。备选地,用于产生校正图像信号的校正信号可允许平均亮度比其在其它情况下由于老化产生的亮度下降得更加缓慢。
在优选实施方案中,本发明用于包括有机发光二极管(OLED)的显示器中,该二极管由小分子或者聚合OLED组成,如1988年9月6日授予Tang等的US4769292,和于1991年10月29日授予VanSlyke等的US5061567中所述,但不局限于此。可采用有机发光显示器的很多组合和变体来构造这种显示器。
一般显示器结构
本发明可用于大多数OLED显示器构型中。这包括,从包括了单一阳极和阴极的非常简单结构至更复杂的显示器,例如由阳极和阴极的正交阵列组成以形成发光元件的无源短阵显示器,以及其中各个发光元件由例如薄膜晶体管(TFT)单独控制的有源矩阵显示器。
许多有机层构型可成功实施本发明。典型的现有技术结构如附图6中所示并且由基材101、阳极103、空穴注入层105、空穴传输层107、发光层109、电子传输层111、和阴极113组成。这些层在以下详细描述。需要指出该基材可以备选地放置于阴极旁,或者该基材可实际上构成阳极或者阴极。在阳极和阴极之间的有机层可通常称作有机EL元件。该有机层的总厚度优选低于500nm。
该OLED的阳极和阴极层通过电子导体260被连接于电压/电流源250。该OLED通过在阳极和阴极之间施加电势使得阳极比阴极处于正电位而运行。空穴从阳极被注入该有机EL元件并且电子在阴极处被注入有机EL元件。当该OLED在AC模式下操作时,有时可获得改进的显示器稳定性,该AC模式中,对于循环中的某些时期,该电势差逆转并且没有电流。US5552678中记载了AC驱动的OLED的实例。
基材
本发明的OLED显示器通常在支撑基材上,其中阴极或阳极可以与该基材接触。与该基材接触的电极通常称为底部电极。通常,该底部电极是阳极,但是本发明并不局限于这样的构型。该基材可以是能透光的或者是不透光的。在基材为透光的情况下,采用反射或者吸光层来反射通过该盖的光或者吸收该光,从而改进显示器的对比。基材可包括但不限于玻璃、塑料、半导体材料、硅、陶瓷、和电路板材料。当然,需要提供透光的顶部电极。
阳极
当通过阳极103观察EL发射时,该阳极应当对目标射线透明或者基本上透明。本发明中常用的透明阳极材料是氧化铟锡(ITO)、氧化铟锌(IZO)和氧化锡,但是其它金属氧化物也可用,包括但不限于掺杂铝或者掺杂铟的氧化锌,氧化镁铟、和氧化镍钨。除这些氧化物以外,金属氮化物例如氮化镓、和金属硒化物例如硒化锌、和金属硫化物例如硫化锌,可用作阳极。在仅通过阴极电极观察EL发射的应用中,阳极的透射特性并不重要,并且可使用任何传导性材料,如透明、不透明或者反射材料。用于该用途的导体实例包括但不限于金、铱、钼、钯、和铂。透光或不透光的典型的阳极材料具有4.1eV或更大的功函。所需阳极材料通常通过任何合适的方式沉积,例如蒸发、溅射、化学汽相沉积、或者电化学方法。可用已知的照相平版工艺来使阳极图案化。非必需地,阳极可以在施加其它层之前抛光以减少表面粗糙度使得缺点最小化或者改善反射性。
空穴注入层(HIL)
尽管并非总是必需的,但是在阳极103和空穴传输层107之间提供空穴注入层105经常是有用的。该空穴注入材料可用于改进后续有机层的成膜性能并且有助于空穴注入该空穴传输层。用于该空穴注入层的合适材料包括但不限于US4720432中所述的卟啉化合物、US6208075中所述的等离子体沉积的氟碳聚合物、和一些芳族胺,例如m-MTDATA(4,4’,4”-三[(3-甲基苯基)苯基氨基]三苯基胺)。据报道备选的适用于有机EL显示器中的空穴注入材料记载于EP0891121A1和EP1029909A1中。
空穴传输层(HTL)
空穴传输层107包含至少一种空穴传输化合物,例如芳族叔胺,其中将后者理解为包含至少一个仅结合于碳原子的三价氮原子的化合物,该碳原子的至少之一是芳环的成份。该芳族叔胺的一种形式可以是芳基胺,例如单芳基胺、二芳基胺、三芳基胺、或者聚合芳胺。示例性的单体三芳基胺在Klupfel等的US3180730中有述。由一个或多个乙烯基团取代和/或包括至少一个包含活性氢的基团的其它合适的三芳基胺公开于Brantley等的US3567450和3658520中。
一类更加优选的芳族叔胺是那些包括至少两个芳族叔胺部分的化合物,记载于US4720432和5061569。该空穴传输层可以由单独的芳族叔胺化合物或其混合物形成。合适的芳族叔胺的示例如下:
1,1-二(4-二-对-甲苯基氨基苯基)环己烷
1,1-二(4-二-对-甲苯基氨基苯基)-4-苯基环己烷
4,4′-二(二苯基氨基)四联苯
二(4-二甲基氨基-2-甲基苯基)-苯基甲烷
N,N,N-三(对-甲苯基)胺
4-(二-对-甲苯基氨基)-4′-[4(二-对-甲苯基氨基)-苯乙烯基]茋
N,N,N′,N′-四-对-甲苯基-4-4′-二氨基联苯
N,N,N′,N′-四苯基-4,4′-二氨基联苯
N,N,N′,N′-四-1-萘基-4,4′-二氨基联苯
N,N,N′,N′-四-2-萘基-4,4′-二氨基联苯
N-苯基咔唑
4,4′-二[N-(1-萘基)-N-苯基氨基]联苯
4,4′-二[N-(1-萘基)-N-(2-萘基)氨基]联苯
4,4″-二[N-(1-萘基)-N-苯基氨基]对-三联苯
4,4′-二[N-(2-萘基)-N-苯基氨基]联苯
4,4′-二[N-(3-苊基)-N-苯基氨基]联苯
1,5-二[N-(1-萘基)-N-苯基氨基]萘
4,4′-二[N-(9-蒽基)-N-苯基氨基]联苯
4,4″-二[N-(1-蒽基)-N-苯基氨基]-对-三联苯
4,4′-二[N-(2-菲基)-N-苯基氨基]联苯
4,4′-二[N-(8-荧蒽基)-N-苯基氨基]联苯
4,4′-二[N-(2-芘基)-N-苯基氨基]联苯
4,4′-二[N-(2-并四苯基)-N-苯基氨基]联苯
4,4′-二[N-(2-苝基)-N-苯基氨基]联苯
4,4′-二[N-(1-六苯并苯基)-N-苯基氨基]联苯
2,6-二(二-对-甲苯基氨基)萘
2,6-二[二-(1-萘基)氨基]萘
2,6-二[N-(1-萘基)-N-(2-萘基)氨基]萘
N,N,N′,N′-四(2-萘基)-4,4″-二氨基-对-三联苯
4,4′-二{N-苯基-N-[4-(1-萘基)-苯基]氨基}联苯
4,4′-二[N-苯基-N-(2-芘基)氨基]联苯
2,6-二[N,N-二(2-萘基)胺]芴
1,5-二[N-(I-萘基)-N-苯基氨基]萘
4,4′,4″-三[(3-甲基苯基)苯基氨基]三苯基胺
其它可用的空穴传输材料包括EP1009041中记载的多环芳族化合物。可采用具有两个以上胺基的叔芳胺,包括寡聚材料。此外,可使用聚合空穴传输材料例如聚(N-乙烯基咔唑)(PVK)、聚噻吩、聚吡咯、聚苯胺,和共聚物例如聚(3,4-亚乙基二氧基噻吩)/聚(4-苯乙烯磺酸盐),也谓之PEDOT/PSS。
发光层(LEL)
如在US4769292和5935721中更加充分的记载,有机EL元件的发光层(LEL)109包括发光或荧光材料,其中电致发光是该区域中电子-空穴对重组的结果。发光层可以由单一材料组成,但是更通常由掺杂了客体化合物的主体材料组成,其中光线发射主要来自该掺杂剂并且可以是任何颜色。该发光层中的主体材料可以是电子传输材料(如下所述),空穴传输材料(如上所述),或者支持空穴电子重组的其它材料或者材料的组合。该掺杂剂通常选自高荧光染料,但是磷光化合的,例如WO 98/55561,WO 00/18851,WO 00/57676,和WO 00/70655中所述的过渡金属配合物也是可用的。通常以0.01-10重量%将掺杂剂涂覆入该主体材料中。聚合材料例如聚芴和聚乙烯基亚芳基(例如聚(对-亚苯基亚乙烯基),PPV)可用作主体材料。在该情况下,小分子掺杂剂可以以分子形式分散到该聚合主体中,或者该掺杂剂可通过将较小组分共聚到主体聚合物中而加入。
选择作为掺杂剂的染料的重要关系是比较能带隙电势,其被定义为该分子的最高占据分子轨道与最低空分子轨道之间的能量差。对于从主体至掺杂分子的有效能量转移而言,必要条件是该掺杂剂的能带隙低于主体材料的能带隙。对于磷光发光体而言,主体的主体三重态能级应当足够高,从而保证能量从主体转移到掺杂剂。
已知的可用主体和发射分子包括但不限于US 4,768,292;5,141,671;5,150,006;5,151,629;5,405,709;5,484,922;5,593,788;5,645,948;5,683,823;5,755,999;5,928,802;5,935,720;5,935,721;和6,020,078中公开的那些。
8-羟基喹啉(喔星)的金属配合物和相似的衍生物构成一类有用的能够支持电致发光的主体化合物。有用的螯合类喔星(oxinoid)化合物如下:
CO-1:三喔星铝[别名,三(8-羟基喹啉)铝(III)]
CO-2:二喔星镁[别名,二(8-羟基喹啉)镁(II)]
CO-3:二[苯并{f}-8-羟基喹啉]锌(II)
CO-4:二(2-甲基-8-羟基喹啉)铝(I11)-μ-氧-二(2-甲基-8-羟基喹啉)铝(III)
CO-5:三喔星铟[别名,三(8-羟基喹啉)铟]
CO-6:三(5-甲基喔星)铝[别名,三(5-甲基-8-羟基喹啉)铝(III)]
CO-7:喔星锂[别名,(8-羟基喹啉)锂(I)]
CO-8:喔星镓[别名,三(8-羟基喹啉)镓(III)]
CO-9:喔星镐[别名,四(8-羟基喹啉)镐(IV)]
其它有用的主体材料包括但不限于蒽的衍生物,例如US5935721中所述的9,10-二(萘基)蒽和其衍生物,US5121029中所述二苯乙烯基亚芳基衍生物,和氮茚衍生物例如2,2′,2″-(1,3,5-亚苯基)三[1-苯基-1H-苯并咪唑]。对于磷光发出体,咔唑衍生物是尤其适用的主体。
有用的荧光掺杂剂包括但不限于蒽、并四苯、呫吨、苝、红荧烯、香豆素、若丹明、和喹吖啶酮的衍生物、二氰基亚甲基吡喃化合物、噻喃化合物、聚次甲基化合物、吡喃鎓和噻喃鎓化合物、芴衍生物、二荧蒽嵌苯衍生物、茚并苝衍生物、二(嗪基)胺硼化合物、二(嗪基)甲烷化合物、和喹诺酮化合物。
电子传输层(ETL)
优选的用于形成本发明的有机EL元件的电子传输层111的薄膜形成材料是金属螯合的喔星化合物,包括喔星螯合物本身(也通常称之为8-喹啉醇或8-羟基喹啉)。该化合物有助于注入并传输电子,展示了高性能水平,并且容易制造成薄膜形式。示例性的类喔星化合物如前所列。
其它电子传输材料包括多种US4356429中所述的丁二烯衍生物和US4539507中所述的多种杂环荧光增白剂。氮茚和三嗪也是有用的电子传输材料。
阴极
当仅通过阳极观察光发射时,本发明中所用的阴极113可由几乎任何传导性材料组成。理想的材料具有良好的成膜性能以确保与下面的有机层的良好接触,促进在低压的电子注入,并具有良好稳定性。有用的阴极材料经常包括低功函金属(<0.4eV)或者金属合金。一种优选的阴极金属由Mg:Ag合金组成,其中银的百分比为1-20%,如US4885221中所述。另一类合适的阴极材料包括包含与有机层(例如ETL)接触的其顶上有传导性金属的较厚层的薄电子注入层(EIL)的双层。在此,该EIL优选包括低功函金属或者金属盐,并且若是如此的话,该较厚的顶层不需要具有低功函。一种此类阴极由LiF的薄层以及随之的Al较厚层组成,如US5677572所记载。其它有用的阴极材料组包括但不限于US5059861、5059862、和6140763中所述的那些。
当从阴极观察光发射时,该阴极必须是透明或者近乎透明的。对于此类应用而言,金属必须薄或者必须使用透明传导性氧化物,或者这些材料的组合。光学透明的阴极更详细地记载在US 4,885,211、US 5,247,190、JP 3,234,963、US 5,703,436、US 5,608,287、US 5,837,391、US 5,677,572、US 5,776,622、US 5,776,623、US 5,714,838、US 5,969,474、US 5,739,545,US 5,981,306、US 6,137,223、US 6,140,763、US 6,172,459、EP1 076 368、US 6,278,236和US 6,284,393中。阴极材料通常通过蒸发、溅射、或者化学汽相沉积的方法沉积。当需要时,可通过许多公知的方法进行图案化,该方法包括但不限于,透罩沉积、整体阴罩式(integralshadow masking),如US5276380和EP0732868中所述,激光烧灼、和选择性化学汽相沉积。
其它常用有机层和显示器结构
在一些例子中,层109和111可以非必需地压成执行支持光发射和电子传输功能的单层。本领域中也已知该发射掺杂剂可被加入空穴传输层,其可用作主体。多种掺杂剂可加入一层或多层从而产生发白光的OLED,例如,通过结合发蓝和黄光的材料,发青和红光的材料,或者发红、绿、和蓝的材料。发白光的显示器记载于例如EP 1 187 235,US 20020025419,EP 1 182 244,US 5,683,823,US 5,503,910,US 5,405,709,和US 5,283,182中。
现有技术教导的额外层例如电子或者空穴阻挡层可用于本发明的显示器中。空穴阻挡层常用于改进磷光发光体显示器的效率,例如US20020015859中有述。
本发明可用于所谓的堆积式(stacked)显示器结构,例如US5703436和US6337492中所教导的。
有机层的沉积
上述的有机材料可以恰当地通过汽相沉积方法例如升华来沉积,而且可从流体沉积,例如从具有非必需的粘结剂以改进成膜的溶剂沉积。若该材料是聚合物,则溶剂沉积是有用的,但其它方法可以使用,例如溅射或者从供体片材热转移。待通过升华沉积的材料可以从通常由钽材料组成的升华“船”蒸发,例如US6237529中的记载,或者先涂覆到供体片材上而后在更接近基材处升华。具有材料混合物的层可利用单独的升华船,或者该材料可预混合并且从单一船或者供体片材进行涂覆。图案化的沉积可通过透罩沉积、整体阴罩式(US5294870)、从供体片材转移立构热染料(US5688551,5851709,和6066357)和喷墨方法(US6066357)。
封装
大多数OLED显示器对湿气或者氧气或者两者敏感,因此,其通常密封在惰性气氛中例如氮或氩,与例如氧化铝、矾土、硫酸钙、粘土、硅胶、沸石、碱金属氧化物、碱土金属氧化物、硫酸盐、或金属卤化物和高氯酸盐的干燥剂在一起。用于封装和干燥的方法包括但不限于US6226890中记载的那些。此外,屏障层例如SiOx、聚四氟乙烯、和交替的无机/聚合物层在封装领域中也是已知的。
光学最佳化
若需要的话,本发明的OLED显示器可利用多种公知的光学效果来改善其性能。这包括使得层厚度最优化以产生最大透光性、提供介电镜像结构、用光吸收电极取代反射性电极、给该显示器提供防炫光或减反射涂层、在显示器上提供偏光介质、或在显示器上提供有色的中等密度或者反色滤光片。滤光片、偏光器、和防炫光或减反射涂层可以专门提供在盖上或者是在该盖下的电极保护层。
部件列表
10OLED发光元件
12晶体管
14反馈信号
15负荷电阻
16控制器
20基材
22阵列
23热电偶
24校正控制信号
26输入信号
30选择信号
32选择晶体管
40像素
42移位寄存器
50施加输入信号步骤
52测量步骤
54储存步骤
56重复步骤
58生成表格步骤
60施加输入信号步骤
62形成校正信号步骤
64施加校正信号步骤
101基材
103阳极
105空穴注入层
107空穴传输层
109发光层
111电子传输层
113阴极
250电压/电流源
260电子导体

Claims (4)

1.一种有机发光二极管(OLED)显示器,包括:
a)OLED阵列,各OLED具有两个终端;
b)用于各OLED的电压传感电路,包括连接于相应OLED的终端之一的各电路中的晶体管,用于感应横跨该OLED的电压从而产生代表横跨该OLED的电压的反馈信号;和
c)响应于该反馈信号的控制器,其中该控制器包括具有用于各OLED的校正信号的查找表,其中反馈信号作为输入信号被施加于该控制器,该控制器利用所述查找表计算出校正信号,并将该校正信号施加到用于驱动各OLED的数据从而补偿各OLED的输出中的变化。
2.权利要求1所述的OLED显示器,其中该OLED的输出随温度变化,并且进一步包括温度传感器,用于产生温度信号,并且其中该控制器也响应于该温度信号从而计算校正信号。
3.权利要求1所述的OLED显示器,其中该控制器相继激发各个OLED以测量与各OLED元件相关的电压。
4.权利要求1所述的OLED显示器,其中该控制器以多种不同亮度水平激发一个或多个OLED元件从而计算出校正信号。
CN200480034871XA 2003-11-25 2004-11-22 具有老化补偿的oled显示器 Expired - Fee Related CN1886774B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/721,123 US6995519B2 (en) 2003-11-25 2003-11-25 OLED display with aging compensation
US10/721,123 2003-11-25
PCT/US2004/039168 WO2005055186A1 (en) 2003-11-25 2004-11-22 An oled display with aging compensation

Publications (2)

Publication Number Publication Date
CN1886774A CN1886774A (zh) 2006-12-27
CN1886774B true CN1886774B (zh) 2010-08-04

Family

ID=34591729

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200480034871XA Expired - Fee Related CN1886774B (zh) 2003-11-25 2004-11-22 具有老化补偿的oled显示器

Country Status (6)

Country Link
US (1) US6995519B2 (zh)
JP (1) JP2007514966A (zh)
KR (1) KR20060134938A (zh)
CN (1) CN1886774B (zh)
TW (1) TW200526065A (zh)
WO (1) WO2005055186A1 (zh)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102890913A (zh) * 2012-10-22 2013-01-23 深圳市华星光电技术有限公司 Amoled显示器及其精确补偿老化的方法
US8994617B2 (en) 2010-03-17 2015-03-31 Ignis Innovation Inc. Lifetime uniformity parameter extraction methods
US9059117B2 (en) 2009-12-01 2015-06-16 Ignis Innovation Inc. High resolution pixel architecture
US9275579B2 (en) 2004-12-15 2016-03-01 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9280933B2 (en) 2004-12-15 2016-03-08 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9324268B2 (en) 2013-03-15 2016-04-26 Ignis Innovation Inc. Amoled displays with multiple readout circuits
US9330598B2 (en) 2005-06-08 2016-05-03 Ignis Innovation Inc. Method and system for driving a light emitting device display
US9336717B2 (en) 2012-12-11 2016-05-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9343006B2 (en) 2012-02-03 2016-05-17 Ignis Innovation Inc. Driving system for active-matrix displays
US9351368B2 (en) 2013-03-08 2016-05-24 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9355584B2 (en) 2011-05-20 2016-05-31 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9437137B2 (en) 2013-08-12 2016-09-06 Ignis Innovation Inc. Compensation accuracy
US9466240B2 (en) 2011-05-26 2016-10-11 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US9472139B2 (en) 2003-09-23 2016-10-18 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US9489897B2 (en) 2010-12-02 2016-11-08 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US9489891B2 (en) 2006-01-09 2016-11-08 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9530349B2 (en) 2011-05-20 2016-12-27 Ignis Innovations Inc. Charged-based compensation and parameter extraction in AMOLED displays
US9530352B2 (en) 2006-08-15 2016-12-27 Ignis Innovations Inc. OLED luminance degradation compensation
US9536465B2 (en) 2013-03-14 2017-01-03 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US9536460B2 (en) 2012-05-23 2017-01-03 Ignis Innovation Inc. Display systems with compensation for line propagation delay

Families Citing this family (192)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7569849B2 (en) 2001-02-16 2009-08-04 Ignis Innovation Inc. Pixel driver circuit and pixel circuit having the pixel driver circuit
US7446743B2 (en) * 2001-09-11 2008-11-04 Intel Corporation Compensating organic light emitting device displays for temperature effects
CA2419704A1 (en) 2003-02-24 2004-08-24 Ignis Innovation Inc. Method of manufacturing a pixel with organic light-emitting diode
JP3987004B2 (ja) * 2003-06-09 2007-10-03 日本テキサス・インスツルメンツ株式会社 駆動回路およびこれを有する表示システム
DE102004022424A1 (de) * 2004-05-06 2005-12-01 Deutsche Thomson-Brandt Gmbh Schaltung und Ansteuerverfahren für eine Leuchtanzeige
US20050263718A1 (en) * 2004-05-21 2005-12-01 Seiko Epson Corporation Line head and image forming apparatus incorporating the same
TWI287212B (en) * 2004-06-02 2007-09-21 Chi Mei Optoelectronics Corp Driving circuit, compensation circuit of pixel structures of active organic electro-luminescence device and signal compensating method thereof
CA2472671A1 (en) 2004-06-29 2005-12-29 Ignis Innovation Inc. Voltage-programming scheme for current-driven amoled displays
US7834827B2 (en) * 2004-07-30 2010-11-16 Semiconductor Energy Laboratory Co., Ltd. Light emitting device and driving method thereof
JP4510735B2 (ja) * 2004-09-22 2010-07-28 統寶光電股▲ふん▼有限公司 設計手法、パネル及びその電子素子
US20060119592A1 (en) * 2004-12-06 2006-06-08 Jian Wang Electronic device and method of using the same
CA2490858A1 (en) 2004-12-07 2006-06-07 Ignis Innovation Inc. Driving method for compensated voltage-programming of amoled displays
US20140111567A1 (en) 2005-04-12 2014-04-24 Ignis Innovation Inc. System and method for compensation of non-uniformities in light emitting device displays
US9171500B2 (en) 2011-05-20 2015-10-27 Ignis Innovation Inc. System and methods for extraction of parasitic parameters in AMOLED displays
US10012678B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
EP2688058A3 (en) 2004-12-15 2014-12-10 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US10013907B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US8599191B2 (en) 2011-05-20 2013-12-03 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9799246B2 (en) 2011-05-20 2017-10-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US7205169B2 (en) * 2005-01-14 2007-04-17 Au Optronics Corp. Driving circuit for AMOLED display and driving method thereof
CA2495726A1 (en) 2005-01-28 2006-07-28 Ignis Innovation Inc. Locally referenced voltage programmed pixel for amoled displays
CA2496642A1 (en) 2005-02-10 2006-08-10 Ignis Innovation Inc. Fast settling time driving method for organic light-emitting diode (oled) displays based on current programming
DE502005003742D1 (de) * 2005-06-14 2008-05-29 Novaled Ag Verfahren zum Betreiben eines organischen lichtemittierenden Bauteils und organisches lichtemittierendes Bauteil
JP4996065B2 (ja) * 2005-06-15 2012-08-08 グローバル・オーエルイーディー・テクノロジー・リミテッド・ライアビリティ・カンパニー 有機el表示装置の製造方法および有機el表示装置
CA2510855A1 (en) * 2005-07-06 2007-01-06 Ignis Innovation Inc. Fast driving method for amoled displays
US20070109284A1 (en) * 2005-08-12 2007-05-17 Semiconductor Energy Laboratory Co., Ltd. Display device
DE102005042704A1 (de) * 2005-09-01 2007-03-08 Ingenieurbüro Kienhöfer GmbH Verfahren zum Betreiben einer Anzeigevorrichtung mit einer Mehrzahl von verschleißbehafteten Bildelementen und Anzeigevorrichtung
CA2518276A1 (en) 2005-09-13 2007-03-13 Ignis Innovation Inc. Compensation technique for luminance degradation in electro-luminance devices
US20070069632A1 (en) * 2005-09-26 2007-03-29 Toppoly Optoelectronics Corp. Electroluminescent device and pixel device
US20080055209A1 (en) * 2006-08-30 2008-03-06 Eastman Kodak Company Method and apparatus for uniformity and brightness correction in an amoled display
US8558765B2 (en) * 2005-11-07 2013-10-15 Global Oled Technology Llc Method and apparatus for uniformity and brightness correction in an electroluminescent display
WO2007079572A1 (en) 2006-01-09 2007-07-19 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9269322B2 (en) 2006-01-09 2016-02-23 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
KR20080098057A (ko) * 2006-02-10 2008-11-06 이그니스 이노베이션 인크. 발광 디바이스 디스플레이 방법 및 시스템
DE102006008018A1 (de) * 2006-02-21 2007-08-23 Osram Opto Semiconductors Gmbh Beleuchtungseinrichtung
US20080048951A1 (en) * 2006-04-13 2008-02-28 Naugler Walter E Jr Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display
US8477121B2 (en) 2006-04-19 2013-07-02 Ignis Innovation, Inc. Stable driving scheme for active matrix displays
US20070268414A1 (en) * 2006-05-21 2007-11-22 Ming-Tso Hsu Method and system for distributing pvr functionalities
KR100797750B1 (ko) 2006-06-02 2008-01-24 리디스 테크놀로지 인코포레이티드 온도 보상부를 구비한 유기 발광 표시 장치 및 구동 회로
US7696965B2 (en) * 2006-06-16 2010-04-13 Global Oled Technology Llc Method and apparatus for compensating aging of OLED display
US20070290947A1 (en) * 2006-06-16 2007-12-20 Cok Ronald S Method and apparatus for compensating aging of an electroluminescent display
US20080042943A1 (en) * 2006-06-16 2008-02-21 Cok Ronald S Method and apparatus for averaged luminance and uniformity correction in an am-el display
US20070290958A1 (en) * 2006-06-16 2007-12-20 Eastman Kodak Company Method and apparatus for averaged luminance and uniformity correction in an amoled display
US8176319B2 (en) * 2006-06-27 2012-05-08 Emc Corporation Identifying and enforcing strict file confidentiality in the presence of system and storage administrators in a NAS system
US20080002070A1 (en) * 2006-06-29 2008-01-03 Eastman Kodak Company Driving oled display with improved uniformity
EP2055149B1 (en) * 2006-08-14 2017-04-19 Philips Intellectual Property & Standards GmbH Electroluminescent device having a variable color point
US20080042938A1 (en) * 2006-08-15 2008-02-21 Cok Ronald S Driving method for el displays with improved uniformity
GB2441354B (en) * 2006-08-31 2009-07-29 Cambridge Display Tech Ltd Display drive systems
TWI348677B (en) * 2006-09-12 2011-09-11 Ind Tech Res Inst System for increasing circuit reliability and method thereof
KR100787221B1 (ko) * 2006-09-26 2007-12-21 삼성전자주식회사 Led 기반 광시스템 및 그의 노화 보상방법
US8310173B2 (en) * 2006-10-19 2012-11-13 Sharp Kabushiki Kaisha LED driving device, illuminating device, and display device
KR100834065B1 (ko) * 2006-11-10 2008-06-02 재단법인서울대학교산학협력재단 유기 전계 발광 표시 장치의 화소 회로
US7355574B1 (en) 2007-01-24 2008-04-08 Eastman Kodak Company OLED display with aging and efficiency compensation
JP5342111B2 (ja) * 2007-03-09 2013-11-13 株式会社ジャパンディスプレイ 有機el表示装置
US7847764B2 (en) * 2007-03-15 2010-12-07 Global Oled Technology Llc LED device compensation method
US20080231557A1 (en) * 2007-03-20 2008-09-25 Leadis Technology, Inc. Emission control in aged active matrix oled display using voltage ratio or current ratio
US8077123B2 (en) * 2007-03-20 2011-12-13 Leadis Technology, Inc. Emission control in aged active matrix OLED display using voltage ratio or current ratio with temperature compensation
US20080231566A1 (en) * 2007-03-20 2008-09-25 Leadis Technology, Inc. Minimizing dark current in oled display using modified gamma network
KR101361876B1 (ko) * 2007-03-21 2014-02-12 엘지디스플레이 주식회사 전계발광표시장치 및 이의 구동방법
KR100914118B1 (ko) * 2007-04-24 2009-08-27 삼성모바일디스플레이주식회사 유기 전계 발광 표시 장치 및 그 구동 방법
JP2008299019A (ja) * 2007-05-30 2008-12-11 Sony Corp カソード電位制御装置、自発光表示装置、電子機器及びカソード電位制御方法
US7859501B2 (en) * 2007-06-22 2010-12-28 Global Oled Technology Llc OLED display with aging and efficiency compensation
GB2453372A (en) * 2007-10-05 2009-04-08 Cambridge Display Tech Ltd A pixel driver circuit for active matrix driving of an organic light emitting diode (OLED)
KR101368049B1 (ko) * 2007-10-29 2014-02-26 엘지디스플레이 주식회사 유기전계발광표시장치 및 이의 구동방법
KR101380442B1 (ko) * 2007-11-26 2014-04-01 엘지디스플레이 주식회사 유기전계발광표시장치와 이의 구동방법
US8004479B2 (en) * 2007-11-28 2011-08-23 Global Oled Technology Llc Electroluminescent display with interleaved 3T1C compensation
CN101183509B (zh) * 2007-12-19 2010-12-22 南开大学 一种显示屏周边集成与控制电路共同完成的oled列驱动方法及电路产品
US8026873B2 (en) * 2007-12-21 2011-09-27 Global Oled Technology Llc Electroluminescent display compensated analog transistor drive signal
US8624805B2 (en) * 2008-02-25 2014-01-07 Siliconfile Technologies Inc. Correction of TFT non-uniformity in AMOLED display
JP5142791B2 (ja) * 2008-04-01 2013-02-13 株式会社ジャパンディスプレイイースト 表示装置
CN104299566B (zh) 2008-04-18 2017-11-10 伊格尼斯创新公司 用于发光器件显示器的系统和驱动方法
US8217867B2 (en) * 2008-05-29 2012-07-10 Global Oled Technology Llc Compensation scheme for multi-color electroluminescent display
US7696773B2 (en) * 2008-05-29 2010-04-13 Global Oled Technology Llc Compensation scheme for multi-color electroluminescent display
KR100952822B1 (ko) * 2008-06-16 2010-04-14 삼성모바일디스플레이주식회사 유기전계발광 표시장치
JP5250493B2 (ja) 2008-07-16 2013-07-31 株式会社半導体エネルギー研究所 発光装置
CA2637343A1 (en) 2008-07-29 2010-01-29 Ignis Innovation Inc. Improving the display source driver
US8288951B2 (en) 2008-08-19 2012-10-16 Plextronics, Inc. Organic light emitting diode lighting systems
US8299983B2 (en) * 2008-10-25 2012-10-30 Global Oled Technology Llc Electroluminescent display with initial nonuniformity compensation
US8228267B2 (en) * 2008-10-29 2012-07-24 Global Oled Technology Llc Electroluminescent display with efficiency compensation
US8358256B2 (en) * 2008-11-17 2013-01-22 Global Oled Technology Llc Compensated drive signal for electroluminescent display
US9370075B2 (en) 2008-12-09 2016-06-14 Ignis Innovation Inc. System and method for fast compensation programming of pixels in a display
US8130182B2 (en) * 2008-12-18 2012-03-06 Global Oled Technology Llc Digital-drive electroluminescent display with aging compensation
US20100201275A1 (en) * 2009-02-06 2010-08-12 Cok Ronald S Light sensing in display device
US8217928B2 (en) * 2009-03-03 2012-07-10 Global Oled Technology Llc Electroluminescent subpixel compensated drive signal
KR101037559B1 (ko) * 2009-03-04 2011-05-27 주식회사 실리콘웍스 데이터 구동부의 모니터링 수단이 구비된 디스플레이 구동 시스템
US8194063B2 (en) * 2009-03-04 2012-06-05 Global Oled Technology Llc Electroluminescent display compensated drive signal
US8350495B2 (en) 2009-06-05 2013-01-08 Light-Based Technologies Incorporated Device driver providing compensation for aging
CA2669367A1 (en) 2009-06-16 2010-12-16 Ignis Innovation Inc Compensation technique for color shift in displays
US9311859B2 (en) 2009-11-30 2016-04-12 Ignis Innovation Inc. Resetting cycle for aging compensation in AMOLED displays
US10319307B2 (en) 2009-06-16 2019-06-11 Ignis Innovation Inc. Display system with compensation techniques and/or shared level resources
CA2688870A1 (en) 2009-11-30 2011-05-30 Ignis Innovation Inc. Methode and techniques for improving display uniformity
US9384698B2 (en) 2009-11-30 2016-07-05 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
JP5531496B2 (ja) * 2009-08-18 2014-06-25 セイコーエプソン株式会社 画像処理装置、表示システム、電子機器及び画像処理方法
US20110043541A1 (en) * 2009-08-20 2011-02-24 Cok Ronald S Fault detection in electroluminescent displays
US8259095B2 (en) * 2009-08-20 2012-09-04 Global Oled Technology Llc Optically testing chiplets in display device
JP5471165B2 (ja) * 2009-08-26 2014-04-16 セイコーエプソン株式会社 画像処理装置、表示システム、電子機器及び画像処理方法
US20110069049A1 (en) * 2009-09-23 2011-03-24 Open Labs, Inc. Organic led control surface display circuitry
US8497828B2 (en) 2009-11-12 2013-07-30 Ignis Innovation Inc. Sharing switch TFTS in pixel circuits
US10996258B2 (en) 2009-11-30 2021-05-04 Ignis Innovation Inc. Defect detection and correction of pixel circuits for AMOLED displays
CA2686174A1 (en) * 2009-12-01 2011-06-01 Ignis Innovation Inc High reslution pixel architecture
CA2687631A1 (en) 2009-12-06 2011-06-06 Ignis Innovation Inc Low power driving scheme for display applications
JP2011141418A (ja) * 2010-01-07 2011-07-21 Sony Corp 表示装置、光検出方法、電子機器
US10163401B2 (en) * 2010-02-04 2018-12-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US20140313111A1 (en) 2010-02-04 2014-10-23 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10176736B2 (en) 2010-02-04 2019-01-08 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10089921B2 (en) 2010-02-04 2018-10-02 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
CA2692097A1 (en) 2010-02-04 2011-08-04 Ignis Innovation Inc. Extracting correlation curves for light emitting device
US9881532B2 (en) 2010-02-04 2018-01-30 Ignis Innovation Inc. System and method for extracting correlation curves for an organic light emitting device
CN101866943B (zh) * 2010-02-26 2013-12-25 信利半导体有限公司 一种有机电致发光显示器及其封装方法
TWI428890B (zh) * 2010-10-08 2014-03-01 Au Optronics Corp 具電源電壓降補償功能之畫素電路與發光面板
US8456390B2 (en) * 2011-01-31 2013-06-04 Global Oled Technology Llc Electroluminescent device aging compensation with multilevel drive
TWI438753B (zh) * 2011-04-29 2014-05-21 Wintek Corp 有機發光二極體像素電路
US20140368491A1 (en) 2013-03-08 2014-12-18 Ignis Innovation Inc. Pixel circuits for amoled displays
US9886899B2 (en) 2011-05-17 2018-02-06 Ignis Innovation Inc. Pixel Circuits for AMOLED displays
WO2012156942A1 (en) 2011-05-17 2012-11-22 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
US9606607B2 (en) 2011-05-17 2017-03-28 Ignis Innovation Inc. Systems and methods for display systems with dynamic power control
CN106910464B (zh) 2011-05-27 2020-04-24 伊格尼斯创新公司 补偿显示器阵列中像素的系统和驱动发光器件的像素电路
EP2945147B1 (en) 2011-05-28 2018-08-01 Ignis Innovation Inc. Method for fast compensation programming of pixels in a display
US8901579B2 (en) 2011-08-03 2014-12-02 Ignis Innovation Inc. Organic light emitting diode and method of manufacturing
US9070775B2 (en) 2011-08-03 2015-06-30 Ignis Innovations Inc. Thin film transistor
US9236011B2 (en) 2011-08-30 2016-01-12 Lg Display Co., Ltd. Organic light emitting diode display device for pixel current sensing in the sensing mode and pixel current sensing method thereof
US20130207544A1 (en) * 2011-09-30 2013-08-15 Pinebrook Imaging Technology, Ltd. Illumination system
US9385169B2 (en) 2011-11-29 2016-07-05 Ignis Innovation Inc. Multi-functional active matrix organic light-emitting diode display
US10089924B2 (en) 2011-11-29 2018-10-02 Ignis Innovation Inc. Structural and low-frequency non-uniformity compensation
US9190456B2 (en) 2012-04-25 2015-11-17 Ignis Innovation Inc. High resolution display panel with emissive organic layers emitting light of different colors
US9747834B2 (en) 2012-05-11 2017-08-29 Ignis Innovation Inc. Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
KR102090705B1 (ko) * 2012-09-07 2020-03-19 삼성디스플레이 주식회사 표시 장치 및 표시 장치의 구동 방법
US9084326B2 (en) * 2012-09-13 2015-07-14 Qualcomm Incorporated Method and apparatus for LED forward voltage measurement for optimum system efficiency
CN102915702B (zh) * 2012-10-19 2015-06-10 深圳市华星光电技术有限公司 一种oled显示装置及其控制方法
US9786223B2 (en) 2012-12-11 2017-10-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
KR101965787B1 (ko) * 2012-12-17 2019-04-04 엘지디스플레이 주식회사 유기 발광 디스플레이 장치와 이의 구동 방법
US9830857B2 (en) 2013-01-14 2017-11-28 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
DE112014000422T5 (de) 2013-01-14 2015-10-29 Ignis Innovation Inc. Ansteuerschema für Emissionsanzeigen, das eine Kompensation für Ansteuertransistorschwankungen bereitstellt
CA2894717A1 (en) 2015-06-19 2016-12-19 Ignis Innovation Inc. Optoelectronic device characterization in array with shared sense line
US9721505B2 (en) 2013-03-08 2017-08-01 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9952698B2 (en) 2013-03-15 2018-04-24 Ignis Innovation Inc. Dynamic adjustment of touch resolutions on an AMOLED display
CN110634431B (zh) 2013-04-22 2023-04-18 伊格尼斯创新公司 检测和制造显示面板的方法
DE112014002117T5 (de) * 2013-04-24 2016-01-21 Ignis Innovation Inc. Anzeigesystem mit Kompensationstechniken und/oder gemeinsam genutzten Ebenenressourcen
KR102029319B1 (ko) * 2013-06-19 2019-10-08 삼성디스플레이 주식회사 유기전계발광 표시장치 및 그의 구동방법
JP2015043041A (ja) * 2013-08-26 2015-03-05 三星ディスプレイ株式會社Samsung Display Co.,Ltd. 電気光学装置
KR102223552B1 (ko) 2013-12-04 2021-03-04 엘지디스플레이 주식회사 유기 발광 표시 장치 및 그의 구동 방법
US9741282B2 (en) 2013-12-06 2017-08-22 Ignis Innovation Inc. OLED display system and method
US9761170B2 (en) 2013-12-06 2017-09-12 Ignis Innovation Inc. Correction for localized phenomena in an image array
EP3082126A4 (en) 2013-12-10 2017-08-30 Neoview Kolon Co., Ltd. Brightness deviation compensation device and compensation method of organic light emitting display device
US9502653B2 (en) 2013-12-25 2016-11-22 Ignis Innovation Inc. Electrode contacts
US10997901B2 (en) 2014-02-28 2021-05-04 Ignis Innovation Inc. Display system
US10176752B2 (en) 2014-03-24 2019-01-08 Ignis Innovation Inc. Integrated gate driver
US10192479B2 (en) 2014-04-08 2019-01-29 Ignis Innovation Inc. Display system using system level resources to calculate compensation parameters for a display module in a portable device
CN110246456A (zh) * 2014-04-17 2019-09-17 伊格尼斯创新公司 用于确定像素的发光设备的当前有效电压的系统和方法
CA2872563A1 (en) 2014-11-28 2016-05-28 Ignis Innovation Inc. High pixel density array architecture
CA2873476A1 (en) 2014-12-08 2016-06-08 Ignis Innovation Inc. Smart-pixel display architecture
CA2879462A1 (en) 2015-01-23 2016-07-23 Ignis Innovation Inc. Compensation for color variation in emissive devices
CN104680979B (zh) 2015-03-23 2019-03-12 京东方科技集团股份有限公司 Oled显示装置和用于矫正oled显示装置的残像的方法
CA2886862A1 (en) 2015-04-01 2016-10-01 Ignis Innovation Inc. Adjusting display brightness for avoiding overheating and/or accelerated aging
CA2889870A1 (en) 2015-05-04 2016-11-04 Ignis Innovation Inc. Optical feedback system
CA2892714A1 (en) 2015-05-27 2016-11-27 Ignis Innovation Inc Memory bandwidth reduction in compensation system
US10373554B2 (en) 2015-07-24 2019-08-06 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
CA2898282A1 (en) 2015-07-24 2017-01-24 Ignis Innovation Inc. Hybrid calibration of current sources for current biased voltage progra mmed (cbvp) displays
US10657895B2 (en) 2015-07-24 2020-05-19 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
KR102435923B1 (ko) 2015-08-05 2022-08-25 삼성디스플레이 주식회사 유기 발광 표시 장치 및 이의 구동 방법
CA2900170A1 (en) 2015-08-07 2017-02-07 Gholamreza Chaji Calibration of pixel based on improved reference values
US9997104B2 (en) 2015-09-14 2018-06-12 Apple Inc. Light-emitting diode displays with predictive luminance compensation
US10163388B2 (en) 2015-09-14 2018-12-25 Apple Inc. Light-emitting diode displays with predictive luminance compensation
KR20170036938A (ko) * 2015-09-24 2017-04-04 삼성디스플레이 주식회사 열화 보상 장치 및 이를 포함하는 표시 장치
CA2908285A1 (en) 2015-10-14 2017-04-14 Ignis Innovation Inc. Driver with multiple color pixel structure
CA2909813A1 (en) 2015-10-26 2017-04-26 Ignis Innovation Inc High ppi pattern orientation
KR102460302B1 (ko) * 2015-12-31 2022-10-27 엘지디스플레이 주식회사 유기발광소자 표시장치 및 이의 구동방법
CN105679222B (zh) * 2016-03-31 2018-03-02 广东欧珀移动通信有限公司 一种像素补偿方法及装置
US20170309225A1 (en) * 2016-04-21 2017-10-26 Sung Chih-Ta Star Apparatus with oled display and oled driver thereof
CN105741771A (zh) * 2016-04-25 2016-07-06 广东欧珀移动通信有限公司 一种发光元件的亮度确定方法、装置及移动终端
CN105957467B (zh) * 2016-04-25 2019-12-27 Oppo广东移动通信有限公司 一种发光元件的老化信息的生成方法、装置以及终端
CN105954664B (zh) * 2016-04-25 2019-07-19 Oppo广东移动通信有限公司 一种发光元件的老化确定方法、装置及移动终端
US10181278B2 (en) 2016-09-06 2019-01-15 Microsoft Technology Licensing, Llc Display diode relative age
KR102546995B1 (ko) * 2016-11-04 2023-06-26 삼성디스플레이 주식회사 표시 패널의 휘도 보상 방법
DE102017222059A1 (de) 2016-12-06 2018-06-07 Ignis Innovation Inc. Pixelschaltungen zur Minderung von Hysterese
US20180188675A1 (en) * 2016-12-29 2018-07-05 Kabushiki Kaisha Toshiba Sheet post-processing apparatus and sensor deterioration detection method
US10714018B2 (en) 2017-05-17 2020-07-14 Ignis Innovation Inc. System and method for loading image correction data for displays
US10453375B2 (en) 2017-06-04 2019-10-22 Apple Inc. Long-term history of display intensities
KR102326166B1 (ko) * 2017-06-30 2021-11-16 엘지디스플레이 주식회사 전계 발광 표시장치와 그 구동방법
US11025899B2 (en) 2017-08-11 2021-06-01 Ignis Innovation Inc. Optical correction systems and methods for correcting non-uniformity of emissive display devices
CN109962085B (zh) * 2017-12-25 2023-08-01 上海耕岩智能科技有限公司 一种监控显示像素发光强度的方法和装置
US10971078B2 (en) 2018-02-12 2021-04-06 Ignis Innovation Inc. Pixel measurement through data line
US10997914B1 (en) 2018-09-07 2021-05-04 Apple Inc. Systems and methods for compensating pixel voltages
JP2021071680A (ja) * 2019-11-01 2021-05-06 セイコーエプソン株式会社 表示装置、頭部装着型表示装置および表示方法
CN111063295B (zh) * 2019-12-31 2021-05-07 深圳市华星光电半导体显示技术有限公司 一种发光二极管阵列面板的驱动装置及其驱动方法
KR20210145047A (ko) 2020-05-22 2021-12-01 삼성디스플레이 주식회사 표시 장치
CN111933070A (zh) * 2020-07-27 2020-11-13 重庆惠科金渝光电科技有限公司 驱动电路以及显示装置
CN112014712B (zh) * 2020-09-24 2023-03-31 中国振华集团永光电子有限公司(国营第八七三厂) 一种全数字型二极管全动态老化方法及老化装置
WO2022266133A1 (en) * 2021-06-17 2022-12-22 Emagin Corporation Oled-based display having pixel compensation and method
CN113516937A (zh) * 2021-06-23 2021-10-19 惠科股份有限公司 驱动方法和显示装置
TWI759255B (zh) * 2021-10-29 2022-03-21 大陸商昆山瑞創芯電子有限公司 有機發光二極體顯示裝置及其運作方法
CN116524873B (zh) * 2023-07-04 2023-08-25 深圳市彤兴电子有限公司 显示屏的显示调整方法、装置以及计算机设备

Family Cites Families (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799688A (en) 1980-12-11 1982-06-21 Sharp Kk Display driving circuit
JPS59208590A (ja) 1983-05-11 1984-11-26 シャープ株式会社 表示装置の駆動回路
US4769292A (en) * 1987-03-02 1988-09-06 Eastman Kodak Company Electroluminescent device with modified thin film luminescent zone
US4751659A (en) * 1987-08-26 1988-06-14 Xerox Corporation Defect compensation for discrete image bars
US5061569A (en) * 1990-07-26 1991-10-29 Eastman Kodak Company Electroluminescent device with organic electroluminescent medium
JPH04269790A (ja) 1991-02-26 1992-09-25 Matsushita Electric Ind Co Ltd 情報表示装置
GB9115401D0 (en) * 1991-07-17 1991-09-04 Philips Electronic Associated Matrix display device and its method of operation
US5159525A (en) * 1991-07-29 1992-10-27 Fuji Koki Manufacturing Co., Ltd. Pressure sensor
US5216504A (en) * 1991-09-25 1993-06-01 Display Laboratories, Inc. Automatic precision video monitor alignment system
US5281960A (en) * 1991-11-19 1994-01-25 Silhouette Technology, Inc. Helmet mounted display
US5521639A (en) * 1992-04-30 1996-05-28 Sony Corporation Solid-state imaging apparatus including a reference pixel in the optically-black region
US5592215A (en) * 1993-02-03 1997-01-07 Rohm Co., Ltd. Stereoscopic picture system and stereoscopic display panel therefor
US5594463A (en) 1993-07-19 1997-01-14 Pioneer Electronic Corporation Driving circuit for display apparatus, and method of driving display apparatus
US5499040A (en) * 1994-06-27 1996-03-12 Radius Inc. Method and apparatus for display calibration and control
JP3392967B2 (ja) * 1994-12-27 2003-03-31 ペンタックス株式会社 スチルビデオカメラ
US5754294A (en) * 1996-05-03 1998-05-19 Virginia Semiconductor, Inc. Optical micrometer for measuring thickness of transparent wafers
JPH1062734A (ja) * 1996-08-22 1998-03-06 Sony Corp 液晶表示装置の欠陥画素補正方法および欠陥画素補正装置
WO1998040871A1 (fr) * 1997-03-12 1998-09-17 Seiko Epson Corporation Circuit pixel, afficheur, et equipement electronique a dispositif photoemetteur commande par courant
US6229508B1 (en) * 1997-09-29 2001-05-08 Sarnoff Corporation Active matrix light emitting diode pixel structure and concomitant method
US5910792A (en) * 1997-11-12 1999-06-08 Candescent Technologies, Corp. Method and apparatus for brightness control in a field emission display
JP3775628B2 (ja) 1998-03-19 2006-05-17 パイオニア株式会社 電荷蓄積性発光素子の駆動装置及び駆動方法
US6504565B1 (en) * 1998-09-21 2003-01-07 Canon Kabushiki Kaisha Light-emitting device, exposure device, and image forming apparatus
JP3961729B2 (ja) * 1999-03-03 2007-08-22 株式会社デンソー 全焦点撮像装置
EP1079361A1 (en) 1999-08-20 2001-02-28 Harness System Technologies Research, Ltd. Driver for electroluminescent elements
JP2003509728A (ja) 1999-09-11 2003-03-11 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ アクティブマトリックスelディスプレイ装置
GB9923261D0 (en) * 1999-10-02 1999-12-08 Koninkl Philips Electronics Nv Active matrix electroluminescent display device
JP2001110565A (ja) 1999-10-04 2001-04-20 Auto Network Gijutsu Kenkyusho:Kk 表示素子駆動装置
US6414661B1 (en) * 2000-02-22 2002-07-02 Sarnoff Corporation Method and apparatus for calibrating display devices and automatically compensating for loss in their efficiency over time
EP1158483A3 (en) * 2000-05-24 2003-02-05 Eastman Kodak Company Solid-state display with reference pixel
US6774578B2 (en) * 2000-09-19 2004-08-10 Semiconductor Energy Laboratory Co., Ltd. Self light emitting device and method of driving thereof
JP3865209B2 (ja) 2000-09-19 2007-01-10 株式会社半導体エネルギー研究所 自発光装置、電子機器
JP2002229513A (ja) * 2001-02-06 2002-08-16 Tohoku Pioneer Corp 有機el表示パネルの駆動装置
JP2002278514A (ja) 2001-03-19 2002-09-27 Sharp Corp 電気光学装置
US6963321B2 (en) * 2001-05-09 2005-11-08 Clare Micronix Integrated Systems, Inc. Method of providing pulse amplitude modulation for OLED display drivers
US20020171611A1 (en) * 2001-05-15 2002-11-21 Eastman Kodak Company Active matrix organic light emitting diode flat-panel display
US6897843B2 (en) 2001-07-14 2005-05-24 Koninklijke Philips Electronics N.V. Active matrix display devices
JP2003043998A (ja) 2001-07-30 2003-02-14 Pioneer Electronic Corp ディスプレイ装置
US6456016B1 (en) * 2001-07-30 2002-09-24 Intel Corporation Compensating organic light emitting device displays
US7446743B2 (en) 2001-09-11 2008-11-04 Intel Corporation Compensating organic light emitting device displays for temperature effects
SG120888A1 (en) * 2001-09-28 2006-04-26 Semiconductor Energy Lab A light emitting device and electronic apparatus using the same
US20030071821A1 (en) 2001-10-11 2003-04-17 Sundahl Robert C. Luminance compensation for emissive displays
US7274363B2 (en) * 2001-12-28 2007-09-25 Pioneer Corporation Panel display driving device and driving method
JP2003271101A (ja) * 2002-03-19 2003-09-25 Tdk Corp 無機el表示装置及びその駆動回路及び駆動方法
US20040150594A1 (en) * 2002-07-25 2004-08-05 Semiconductor Energy Laboratory Co., Ltd. Display device and drive method therefor
US7161566B2 (en) * 2003-01-31 2007-01-09 Eastman Kodak Company OLED display with aging compensation
US6870323B1 (en) * 2003-10-02 2005-03-22 Eastman Kodak Company Color display with white light emitting elements

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9472139B2 (en) 2003-09-23 2016-10-18 Ignis Innovation Inc. Circuit and method for driving an array of light emitting pixels
US9275579B2 (en) 2004-12-15 2016-03-01 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9280933B2 (en) 2004-12-15 2016-03-08 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9330598B2 (en) 2005-06-08 2016-05-03 Ignis Innovation Inc. Method and system for driving a light emitting device display
US9489891B2 (en) 2006-01-09 2016-11-08 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9530352B2 (en) 2006-08-15 2016-12-27 Ignis Innovations Inc. OLED luminance degradation compensation
US9059117B2 (en) 2009-12-01 2015-06-16 Ignis Innovation Inc. High resolution pixel architecture
US8994617B2 (en) 2010-03-17 2015-03-31 Ignis Innovation Inc. Lifetime uniformity parameter extraction methods
US9489897B2 (en) 2010-12-02 2016-11-08 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US9355584B2 (en) 2011-05-20 2016-05-31 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9589490B2 (en) 2011-05-20 2017-03-07 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9530349B2 (en) 2011-05-20 2016-12-27 Ignis Innovations Inc. Charged-based compensation and parameter extraction in AMOLED displays
US9466240B2 (en) 2011-05-26 2016-10-11 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
US9343006B2 (en) 2012-02-03 2016-05-17 Ignis Innovation Inc. Driving system for active-matrix displays
US9536460B2 (en) 2012-05-23 2017-01-03 Ignis Innovation Inc. Display systems with compensation for line propagation delay
WO2014063384A1 (zh) * 2012-10-22 2014-05-01 深圳市华星光电技术有限公司 Amoled显示器及其精确补偿老化的方法
CN102890913B (zh) * 2012-10-22 2014-09-10 深圳市华星光电技术有限公司 Amoled显示器及其精确补偿老化的方法
CN102890913A (zh) * 2012-10-22 2013-01-23 深圳市华星光电技术有限公司 Amoled显示器及其精确补偿老化的方法
US9349312B2 (en) 2012-10-22 2016-05-24 Shenzhen China Star Optoelectronics Technology Co., Ltd. AMOLED display device and method for precisely compensating aging thereof
US9336717B2 (en) 2012-12-11 2016-05-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9351368B2 (en) 2013-03-08 2016-05-24 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9536465B2 (en) 2013-03-14 2017-01-03 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for AMOLED displays
US9324268B2 (en) 2013-03-15 2016-04-26 Ignis Innovation Inc. Amoled displays with multiple readout circuits
US9437137B2 (en) 2013-08-12 2016-09-06 Ignis Innovation Inc. Compensation accuracy

Also Published As

Publication number Publication date
JP2007514966A (ja) 2007-06-07
TW200526065A (en) 2005-08-01
US6995519B2 (en) 2006-02-07
CN1886774A (zh) 2006-12-27
WO2005055186A1 (en) 2005-06-16
US20050110420A1 (en) 2005-05-26
KR20060134938A (ko) 2006-12-28

Similar Documents

Publication Publication Date Title
CN1886774B (zh) 具有老化补偿的oled显示器
CN100483497C (zh) 具有老化补偿的有机发光二极管显示器
CN101300618B (zh) 具有老化补偿的oled显示器件
CN101595519B (zh) 具有老化和效率补偿的oled显示器
CN101689349B (zh) 补偿oled驱动电路特性变化的方法
KR100995825B1 (ko) 광센서를 갖는 유기발광다이오드 디스플레이
US7847766B2 (en) Self-emission display apparatus and method of driving the same
JP3656608B2 (ja) 有機薄膜el素子およびその駆動方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: GLOBAL OLED TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: EASTMAN KODAK COMPANY

Effective date: 20100421

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: NEW YORK, U.S.A. TO: DELAWARE, U.S.A.

TA01 Transfer of patent application right

Effective date of registration: 20100421

Address after: Delaware, USA

Applicant after: Global OLED Technology LLC

Address before: American New York

Applicant before: Eastman Kodak Co.

C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100804

Termination date: 20121122