CN102856351A - Organic electroluminescent display panel and manufacturing method thereof - Google Patents
Organic electroluminescent display panel and manufacturing method thereof Download PDFInfo
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- CN102856351A CN102856351A CN2012103224363A CN201210322436A CN102856351A CN 102856351 A CN102856351 A CN 102856351A CN 2012103224363 A CN2012103224363 A CN 2012103224363A CN 201210322436 A CN201210322436 A CN 201210322436A CN 102856351 A CN102856351 A CN 102856351A
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Abstract
An organic electroluminescent display panel comprises a substrate, an anti-reflection layer with a multilayer structure, a plurality of color filter patterns, a pixel array, a plurality of organic electroluminescent patterns and a second electrode. The anti-reflection layer with a multilayer structure is arranged on the substrate, and the reflection layer with the multilayer structure is provided with a plurality of openings. The color filter pattern is disposed in the opening. The pixel array is configured on the anti-reflection layer of the multilayer structure and the color filter pattern. The pixel array comprises a plurality of first electrodes which are arranged in an array. The organic electroluminescent pattern is disposed on the first electrode, and the second electrode is disposed on the organic electroluminescent pattern. The organic electroluminescent display panel of the invention is provided with a color filter for filtering the ambient light, and a multi-layer anti-reflection layer for reducing the reflection of the ambient light on the organic electroluminescent display panel, thereby improving the contrast of the display panel.
Description
Technical field
The invention relates to a kind of display floater and manufacture method thereof, and particularly relevant for a kind of organic electric-excitation luminescent displaying panel and manufacture method thereof.
Background technology
The information communication industry has become main flow industry now, and because display floater is communication interface between people and the information, so its development particular importance that seems.In the display floater of all multiple types, organic electric-excitation luminescent (organic electroluminescent) display floater has multinomial characteristic and advantage, but, low operating voltage low-temperature operation fast such as self-luminous, wide viewing angle, reaction time and high-photoelectric transformation efficiency etc. are so that it generally is contemplated to next from generation to generation main flow of display floater.
Organic electric-excitation luminescent displaying panel goes out direction of light according to it, can be divided into upwards lighting kenel organic electric-excitation luminescent displaying panel and downward lighting kenel organic electric-excitation luminescent displaying panel.
Fig. 1 is the existing upwards part sectioned view of the organic electric-excitation luminescent displaying panel of lighting kenel, and Fig. 2 is the part sectioned view of the organic electric-excitation luminescent displaying panel of known downward lighting kenel.Please refer to Fig. 1, upwards the organic electric-excitation luminescent displaying panel 100 of lighting kenel comprises first substrate 110, pixel 120, pixel defining layer 130, luminescent layer 140, transparent cathode 150 and colored filter 160.Pixel 120 is configured on the first substrate 110, and pixel 120 comprises a reflective pixel electrodes 121 and a switch element 122.Pixel defining layer 130 is configured on the pixel 120 and has an opening 130a, and luminescent layer 140 is inserted among this opening 130a.Transparent cathode 150 is configured on pixel defining layer 130 and the luminescent layer 140.Colored filter 160 is positioned on the transparent cathode layer 150, and colored filter comprises second substrate 161, colored filter film 162 and black matrix 163.Wherein, colored filter film 162 is aimed in fact the opening 130a of (substantially aligned with) pixel defining layer 130.
In the organic electric-excitation luminescent displaying panel 100 of lighting kenel that makes progress, the part light L that luminescent layer 140 sends can directly pass transparent cathode 150, and the light L of another part then can be reflected 121 reflections of formula pixel electrode and pass transparent electrode layer 150 again.In other words, the light L that passes transparent cathode 150 can pass through colored filter 160.Therefore, in the organic electric-excitation luminescent displaying panel 100 of lighting kenel that makes progress, can utilize the black matrix 163 in the colored filter 160 to reduce the reflection of surround lighting (ambient light), and improve the color saturation (Color Saturation) of display floater by colored filter film 162.
Please refer to Fig. 2, the organic electric-excitation luminescent displaying panel 200 of lighting kenel comprises substrate 210, pixel 220, transparent pixels electrode 221, switch element 222, pixel defining layer 230, luminescent layer 240 and reflective negative electrode 250 downwards.Pixel 220 is configured on the substrate 210, and pixel 220 comprises a switch element 222 and a transparent pixels electrode 221.Pixel defining layer 230 is configured on the pixel 220 and has an opening 230a, and luminescent layer 240 is inserted among this opening 230a.Reflective negative electrode 250 is configured on pixel defining layer 230 and the luminescent layer 240.In the organic electric-excitation luminescent displaying panel 200 of downward lighting kenel, the part light L that luminescent layer 240 sends can directly pass transparent pixels electrode 221, and the light L of another part then can be reflected 250 reflections of formula negative electrode and pass transparent pixels electrode 221 again.In other words, the light L that passes transparent pixels electrode 221 can pass substrate 210.
If wish to see through colored filter film 162 with the color saturation of the organic electric-excitation luminescent displaying panel 200 of the downward lighting kenel of further raising, can form colored filter film at the outer surface of substrate 210, or before pixel 220 forms, colored filter film is produced on the inner surface of substrate 210.If the outer surface at substrate 210 forms colored filter film, since between luminescent layer 240 and the colored filter film across substrate 210, therefore the part light L that sends of luminescent layer 240 can and directly not observed by the user through colored filter film, and then makes the user that the restriction at visual angle is arranged when viewing and admiring display frame.If colored filter film is produced on the inner surface of substrate 210, then before making pixel 220, need to make first black matrix.But deceive now the material of matrix take resin as main, the high temperature when its heat resisting temperature is not sufficient to bear follow-up making pixel 220.Therefore, in the organic electric-excitation luminescent displaying panel of downward lighting kenel, make colored filter, have in fact its degree of difficulty to exist.
Summary of the invention
The invention provides a kind of organic electric-excitation luminescent displaying panel and manufacture method thereof, this organic electric-excitation luminescent displaying panel can be with anti-reflecting layer and color filter sheet integrated in the pel array below.
The present invention proposes a kind of organic electric-excitation luminescent displaying panel, comprises the anti-reflecting layer of a substrate, a sandwich construction, a plurality of color filter patterns, a pel array, a plurality of organic electric-excitation luminescent pattern and the second electrode.The anti-reflecting layer of sandwich construction is disposed on the substrate, and the reflector of this sandwich construction has a plurality of openings.A plurality of color filter patterns are disposed in these openings.Pixel array configuration is on the anti-reflecting layer and color filter patterns of sandwich construction.Wherein, pel array comprises a plurality of the first electrodes that are arrayed.A plurality of organic electric-excitation luminescent pattern arrangement are on the first electrode, and the second electrode is disposed on the organic electric-excitation luminescent pattern.
In one embodiment of this invention, the anti-reflecting layer of the sandwich construction of above-mentioned organic electric-excitation luminescent displaying panel comprises a first metal layer, a phase deviation layer and the second metal level.The first metal layer is disposed on the substrate, and the phase deviation layer is between the first metal layer and the second metal level.
In one embodiment of this invention, the anti-reflecting layer of the sandwich construction of above-mentioned organic electric-excitation luminescent displaying panel comprises a metal level, one first dielectric layer and one second dielectric layer.Metal level is disposed on the substrate, and the first dielectric layer is between metal level and the second dielectric layer.
In one embodiment of this invention, the opening in the reflector of the sandwich construction of above-mentioned organic electric-excitation luminescent displaying panel comprises a plurality of the first openings, a plurality of the second opening and a plurality of the 3rd opening.Color filter patterns comprises a plurality of the first color filter patterns, a plurality of the second color filter patterns and a plurality of the 3rd color filter patterns.Each first color filter patterns is inserted respectively in one of them first opening, and each second color filter patterns is inserted respectively in one of them second opening, and each the 3rd color filter patterns is inserted respectively in one of them the 3rd opening.
In one embodiment of this invention, the first color filter patterns of the color filter patterns of above-mentioned organic electric-excitation luminescent displaying panel is red filter pattern, and the second color filter patterns is green filter pattern, and the 3rd color filter patterns is blue filter pattern.And each first opening in the reflector of sandwich construction is less than the size of each the second opening, and the size of each second opening is less than the size of each the 3rd opening.
In one embodiment of this invention, the organic electric-excitation luminescent pattern of above-mentioned organic electric-excitation luminescent displaying panel comprises a plurality of red organic electric-excitation luminescent patterns, a plurality of green organic electric-excitation luminescent pattern and a plurality of blue organic electric-excitation luminescent pattern.Red organic electric-excitation luminescent pattern disposes corresponding to red filter pattern, and green organic electric-excitation luminescent pattern disposes corresponding to green filter pattern, and blue organic electric-excitation luminescent pattern disposes corresponding to blue filter pattern.
In one embodiment of this invention, the pel array of above-mentioned organic electric-excitation luminescent displaying panel more comprises multi-strip scanning line, many data wires, a plurality of switching transistor, a plurality of driving transistors and capacitors.One grid of each switching transistor is electrically connected with corresponding scan line respectively, and the one source pole of each switching transistor is electrically connected with corresponding data wire respectively.One grid of each driving transistors is electrically connected with a drain electrode of corresponding switching transistor respectively, and a drain electrode of each driving transistors is electrically connected with corresponding the first electrode respectively, and the one source pole of each driving transistors is coupled to a voltage source.One capacitor electrically is coupled between the drain electrode of the source electrode of corresponding driving transistors and corresponding switching transistor.
In one embodiment of this invention, the anti-reflecting layer of the sandwich construction of above-mentioned organic electric-excitation luminescent displaying panel has at least one deck metal level, and the source electrode of each switching transistor and at least one deck metal level electric connection.
In one embodiment of this invention, above-mentioned organic electric-excitation luminescent displaying panel comprises that more one is covered in the insulating barrier on the anti-reflecting layer of sandwich construction, and wherein insulating barrier is between the anti-reflecting layer and pel array of sandwich construction.
The present invention proposes a kind of manufacture method of organic electric-excitation luminescent displaying panel, and the flow process of this manufacture method is as follows.At first form the anti-reflecting layer of a sandwich construction on a substrate, the anti-reflecting layer of this sandwich construction has a plurality of openings.Then, in aforementioned a plurality of openings, form a plurality of color filter patterns.Afterwards, at anti-reflecting layer and color filter patterns formation one pel array of sandwich construction, wherein, pel array comprises a plurality of the first electrodes that are arrayed.Then, form a plurality of organic electric-excitation luminescent patterns at the first electrode.Afterwards, form one second electrode at the organic electric-excitation luminescent pattern.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, the method that wherein forms the anti-reflecting layer of sandwich construction comprises, on substrate, form a first metal layer, on the first metal layer, form again a phase deviation layer, then form one second metal level at the phase deviation layer.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, the method that wherein forms the anti-reflecting layer of sandwich construction comprises, forms a metal level on substrate; On metal level, form again one first dielectric layer, then on the first dielectric layer, form one second dielectric layer.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, wherein a plurality of openings comprise a plurality of the first openings, a plurality of the second opening and a plurality of the 3rd opening.And the method that forms color filter patterns comprises: form a plurality of the first color filter patterns, a plurality of the second color filter patterns and a plurality of the 3rd color filter patterns, wherein each first color filter patterns is inserted respectively in one of them first opening, each second color filter patterns is inserted respectively in one of them second opening, and each the 3rd color filter patterns is inserted respectively in one of them the 3rd opening.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, wherein the first color filter patterns of color filter patterns is red filter pattern, and the second color filter patterns is green filter pattern, and the 3rd color filter patterns is blue filter pattern.And each first opening in the reflector of sandwich construction is less than the size of each the second opening, and the size of each second opening is less than the size of each the 3rd opening.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, the method that wherein forms the organic electric-excitation luminescent pattern comprises:
Form a plurality of red organic electric-excitation luminescent patterns, a plurality of green organic electric-excitation luminescent pattern and a plurality of blue organic electric-excitation luminescent pattern.Wherein red organic electric-excitation luminescent pattern disposes corresponding to red filter pattern, and green organic electric-excitation luminescent pattern disposes corresponding to green filter pattern, and blue organic electric-excitation luminescent pattern disposes corresponding to blue filter pattern.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, the method that wherein forms pel array more comprises: form the multi-strip scanning line, form many data wires and form a plurality of switching transistors.Wherein a grid of each switching transistor is electrically connected with corresponding scan line respectively, and the one source pole of each switching transistor is electrically connected with corresponding data wire respectively.The method that forms pel array more comprises, form a plurality of driving transistorss, wherein a grid of each driving transistors is electrically connected with a drain electrode of corresponding switching transistor respectively, one drain electrode of each driving transistors is electrically connected with corresponding the first electrode respectively, and the one source pole of each driving transistors is coupled to a voltage source.And form a capacitor, wherein capacitor electrically is coupled between the drain electrode of the source electrode of corresponding driving transistors and corresponding switching transistor.
In one embodiment of this invention, in the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel, wherein the anti-reflecting layer of sandwich construction has at least one deck metal level, and the source electrode of each switching transistor and at least one deck metal level electric connection.
In one embodiment of this invention, the manufacture method of above-mentioned organic electric-excitation luminescent displaying panel more comprises: form an insulating barrier with on the anti-reflecting layer that is covered in sandwich construction, wherein insulating barrier is between the anti-reflecting layer and pel array of sandwich construction.
Based on above-mentioned, organic electric-excitation luminescent displaying panel of the present invention has colored filter with the filtration surround lighting, and reduces the reflection of surround lighting on organic electric-excitation luminescent displaying panel with the anti-reflecting layer of sandwich construction, improves by this contrast of display floater.
Description of drawings
Fig. 1 is the existing upwards part sectioned view of the organic electric-excitation luminescent displaying panel of lighting kenel.
Fig. 2 is the part sectioned view of the organic electric-excitation luminescent displaying panel of existing downward lighting kenel.
Fig. 3 is the drive circuit figure of the organic electric-excitation luminescent displaying panel of the first embodiment of the present invention.
Fig. 4 A is the making flow chart of the organic electric-excitation luminescent displaying panel of the first embodiment of the present invention to Fig. 4 D.
Fig. 5 A is the anti-reflecting layer of the sandwich construction of Fig. 4 D.
Fig. 5 B is the anti-reflecting layer of the sandwich construction of another embodiment of the present invention.
Fig. 6 looks schematic diagram on the part of organic electric-excitation luminescent displaying panel of Fig. 4 D.
Fig. 7 is the part sectioned view of the organic electric-excitation luminescent displaying panel of another embodiment of the present invention.
Element wherein, Reference numeral:
100: the organic electric-excitation luminescent displaying panel of the lighting kenel that makes progress
110: first substrate
120: pixel
121: reflective pixel electrodes
122: switch element
130: pixel defining layer
130a: opening
140: luminescent layer
150: transparent cathode
160: colored filter
161: second substrate
162: colored filter film
163: black matrix
200: the organic electric-excitation luminescent displaying panel of downward lighting kenel
210: substrate
220: pixel
221: the transparent pixels electrode
222: switch element
230: pixel defining layer
230a: opening
240: luminescent layer
250: reflective negative electrode
300: organic electric-excitation luminescent displaying panel
310: substrate
420,320: the anti-reflecting layer of sandwich construction
320a: the first metal layer
320b: phase deviation layer
320c: the second metal level
320d; Insulating barrier
321: opening
321a: the first opening
321b: the second opening
321c: the 3rd opening
330: pel array
331: the first electrodes
332: channel layer
3321,3322: the contact zone
333: gate insulator
334: dielectric layer
335: the first protective layers
336: the second protective layers
340: color filter patterns
341: the first color filter patterns, red filter pattern
342: the second color filter patterns, green filter pattern
343: the three color filter patterns, blue filter pattern
350: the organic electric-excitation luminescent pattern
351: red organic electric-excitation luminescent pattern
352: green organic electric-excitation luminescent pattern
353: blue organic electric-excitation luminescent pattern
360: the second electrodes
420b: the first dielectric layer
420c: the second dielectric layer
500: organic electric-excitation luminescent displaying panel
420a, 510: metal level
MP1: driving transistors
MP2: switching transistor
L: light
G: grid
S: source electrode
D: drain electrode
C: capacitor
R: surround lighting
Idrive: drive current
R1, R2, R3, R4: reverberation
OEL: organic electro-luminescence display unit
SL: scan line
DL: data wire
Embodiment
Fig. 3 is the drive circuit figure of the organic electric-excitation luminescent displaying panel of the first embodiment of the present invention.Please refer to Fig. 3, the drive circuit of present embodiment for example is the drive circuit of 2T1C framework.Detailed speech, the drive circuit of present embodiment comprises driving transistors MP1, switching transistor MP2 and capacitor C, the grid G of switching transistor MP2 is electrically connected with corresponding scan line SL respectively, and the source S of switching transistor MP2 is electrically connected with corresponding data wire DL respectively.The grid G of driving transistors MP1 is electrically connected with the drain D of corresponding switching transistor MP2 respectively, and the drain D of driving transistors MP1 is electrically connected with the anode of corresponding organic electro-luminescence display unit OEL respectively.The source S of each driving transistors MP1 is coupled to voltage source OVdd.Capacitor C is electrically coupled between the drain D of the source S of corresponding driving transistors MP1 and corresponding switching transistor MP2.In addition, the negative electrode of organic electro-luminescence display unit OEL then is coupled to another voltage OVss.In the present embodiment, the voltage level of voltage source OVdd is higher than the voltage level of voltage OVss.
When switching transistor MP2 was unlocked, the data voltage that transmits via data wire DL can put on the grid G of driving transistors MP1.When switching transistor MP2 was closed, the data voltage that puts on the grid G of driving transistors MP1 can be kept by capacitor C.Put on the opening degree that data voltage on the grid G of driving transistors MP1 can determine driving transistors MP1, and then the flow through drive current Idrive of organic electro-luminescence display unit OEL of control.
It should be noted that the present invention does not limit quantity and the coupling mode of transistor in the drive circuit, electric capacity, the designer can change according to practical application request the transistor in the drive circuit, quantity and the coupling mode of electric capacity.
Fig. 4 A is the making flow chart of the organic electric-excitation luminescent displaying panel of the first embodiment of the present invention to Fig. 4 D.The making flow process of the organic electric-excitation luminescent displaying panel of the first embodiment of the present invention mainly comprises the following steps, at first forms the anti-reflecting layer of a sandwich construction on a substrate, and the anti-reflecting layer of this sandwich construction has a plurality of openings.Then, in aforementioned a plurality of openings, form a plurality of color filter patterns.Afterwards, at anti-reflecting layer and color filter patterns formation one pel array of sandwich construction, wherein, pel array comprises a plurality of the first electrodes that are arrayed.Then, form a plurality of organic electric-excitation luminescent patterns at the first electrode.Afterwards, form one second electrode at the organic electric-excitation luminescent pattern.Fig. 4 A that below will arrange in pairs or groups describes the making flow chart of the organic electric-excitation luminescent displaying panel of the first embodiment of the present invention in detail to Fig. 4 D.
Please refer to Fig. 4 A, a substrate 310 at first is provided, then on substrate 310, make the anti-reflecting layer 320 of sandwich construction, when making the anti-reflecting layer 320 of sandwich construction, can in anti-reflecting layer 320, reserve among a plurality of opening 321(Fig. 4 A and only show three).In the present embodiment, substrate 310 can be made by the material of glass, quartz or other tool light transmission.
In the present embodiment, the anti-reflecting layer 320 of sandwich construction comprises a first metal layer 320a, a phase deviation layer 320b and one second metal level 320c.The first metal layer 320a is disposed on the substrate 310.Phase deviation layer 320b is between the first metal layer 320a and the second metal level 320c.The material of the first metal layer 320a and the second metal level 320c can be silver (Ag), aluminium (Al) or molybdenum (Mo), the material of phase deviation layer 320b can be indium tin oxide (Indium-Tin Oxide, ITO), other transparent electric conducting material or other dielectric material, but the present invention is not as limit.In the present embodiment, made the anti-reflecting layer 320 of sandwich construction after, then can on the anti-reflecting layer 320 of sandwich construction, make again a layer insulating 320d.
Afterwards, illustrate such as Fig. 4 B, make pel array 330 at insulating barrier 320d.Generally speaking, pel array 330 comprises scan line, data wire and pixel, wherein pixel system and corresponding scan line and corresponding data wire electric connection, and pixel comprises transistor and the first electrode (not illustrating).For example, aforesaid transistor comprises channel layer 332, gate insulator 333, grid G, dielectric layer 334, source S and drain D.In addition, present embodiment can optionally be made the first protective layer 335 and the second protective layer 336 on transistor.
The structure that is illustrated in Fig. 4 B is as example, at first produce channel layer 332 at insulating barrier 320d, the material of channel layer 332 can be polysilicon or other similar material, channel layer 332 can impose heavy doping with the contact zone 3321 and 3322 of source S or drain D, and can be according to type selecting doped p type dopant material or the N-shaped dopant material of channel layer material.Then, cover one deck gate insulator 333 at channel layer 332, form grid G at gate insulator 333 subsequently.Gate insulator 333 can be made by inorganic material (for example silica, silicon nitride or silicon oxynitride), organic material or by the stack layer that comprises insulating material and other insulating material.
Then, in order to protect grid G, can above grid G, form a dielectric layer 334.Form source S and drain D subsequently and at this dielectric layer 334.Source S and drain D can be electrically connected with channel layer 332.At last, present embodiment can optionally form the first protective layer 335 and the second protective layer 336 on dielectric layer 334.But the material organic material of the first protective layer 335 and the second protective layer 336 is polyester (polyester) for example; polyethylene (polyethylene); cycloolefin (cycloolefin); polyimides (polyimide); polyamide (polyamide); polyalcohols (polyalcohols); polyphenyl (polyphenylene); polyethers (polyether); the material that polyketone (polyketone) or other are fit to and combination thereof or be made by the stack layer that comprises insulating material and other insulating material.
Please refer to Fig. 4 C, color filter patterns 340 is made in a plurality of openings 321 of anti-reflecting layer 320 of sandwich construction.In the present embodiment, opening 321 comprise among a plurality of first opening 321a(Fig. 4 C only show one), only show one among a plurality of second opening 321b(Fig. 4 C) and a plurality of the 3rd opening 321c(Fig. 4 C in only show one), and color filter patterns 340 comprises a plurality of the first color filter patterns 341, a plurality of the second color filter patterns 342 and a plurality of the 3rd color filter patterns 343.
In Fig. 4 C, the first color filter patterns 341 is inserted respectively among one of them first opening 321a, the second color filter patterns 342 is inserted respectively among one of them second opening 321b, and the 3rd color filter patterns 343 is inserted respectively among one of them the 3rd opening 321c.
After in each opening 321, inserting color filter patterns 340, then can make the first electrode 331, the first electrodes 331 in color filter patterns 340 and connect transistorized drain D.The material of the first electrode 331 can be indium tin oxide (Indium-Tin Oxide, ITO) or indium-zinc oxide (Indium-Zinc Oxide, IZO) or other transparent conductive material.
Please then refer to Fig. 4 D, on the first electrode 331, form organic electric-excitation luminescent pattern 350.In the present embodiment, the material of organic electric-excitation luminescent pattern 350 is Alq3, Almq3, Bebq2 or other suitable luminous organic material.Organic electric-excitation luminescent pattern 350 can be formed on the first electrode 331 by evaporation or other film-plating process.After the making of finishing organic electric-excitation luminescent pattern 350, form one second electrode 360 to be covered on the organic electric-excitation luminescent pattern 350.In the present embodiment, the material of the second electrode 360 can be metal, and metal for example is silver, aluminium, magnesium or its alloy.But the second electrode 360 mat evaporations, sputter or other vapour deposition process deposition.Yet, the material that present embodiment does not limit the second electrode 360 with and production method.
After 360 making of the second electrode are complete, just tentatively finish the making of organic electric-excitation luminescent displaying panel 300.Fig. 4 D that below will arrange in pairs or groups is described in detail for the film layer structure of organic electric-excitation luminescent displaying panel 300.
Shown in Fig. 4 D, the organic electric-excitation luminescent displaying panel 300 of present embodiment comprises anti-reflecting layer 320, a plurality of color filter patterns 340, a pel array 330, a plurality of organic electric-excitation luminescent pattern 350 and second electrode 360 of a substrate 310, a sandwich construction.The anti-reflecting layer 320 of sandwich construction is disposed on the substrate 310, and the reflector of this sandwich construction has a plurality of openings 321.Color filter patterns 340 is disposed in these openings 321.Pel array 330 is disposed on the anti-reflecting layer 320 and color filter patterns 340 of sandwich construction.Pel array 330 comprises a plurality of the first electrodes 331 that are arrayed.In addition, a plurality of organic electric-excitation luminescent patterns 350 are disposed on each first electrode 331, and the second electrode 360 is disposed on the organic electric-excitation luminescent pattern 350.One insulating barrier 320d is configured on the anti-reflecting layer 320 of sandwich construction, does electrical isolation with the second metal level 320c with channel layer 332 and insulating barrier 320d below.In addition, the first electrode 331 of transparent material can make organic electric-excitation luminescent pattern 350 when being subjected to current drives, and the light of launching can appear through the first electrode 331 thus.
Fig. 5 A is the anti-reflecting layer 320 of the sandwich construction of Fig. 4 D.Please refer to Fig. 5 A.When surround lighting R shone anti-reflecting layer 320, reverberation can be divided into the R1 that is reflected by the first metal layer 320a, with two parts of the R2 that is reflected by the second metal level 320c.The reflectivity of each metal level and penetrance are determined by the thickness of each metal level.The phase difference of R1 and R2 is then determined by thickness and the refractive index of phase deviation layer 320b.Therefore, suitably adjusting the thickness of phase deviation layer 320b and refractive index can be so that the phase difference of R1 and R2 just in time be 180 degree.So reverberation R1 and R2 meeting failure interference is cancelled each other, thus can eliminate the reflection of surround lighting R on organic electric-excitation luminescent displaying panel 300, and improve the contrast of organic electric-excitation luminescent displaying panel 300.
Fig. 5 B is the anti-reflecting layer of the sandwich construction of another embodiment of the present invention.The anti-reflecting layer 320 of sandwich construction is not limit by an aforementioned the first metal layer 322, a phase deviation layer 320b and one second metal level 320c and is consisted of.Illustrate such as Fig. 5 B, in another embodiment, the anti-reflecting layer 420 of sandwich construction comprises a metal level 420a, one first dielectric layer 420b and one second dielectric layer 420c.Metal level 420a is disposed on the substrate 310.The first dielectric layer 420b is between metal level 420a and the second dielectric layer 420c.The material of metal level 420a can for example be molybdenum (Mo), and the material of the first dielectric layer 420b can for example be silicon nitride (SiNx), and the material of the second dielectric layer 420c can for example be amorphous silicon material (amorphous Si), but the present invention is not as limit.
Hold above-mentionedly, when surround lighting R shone anti-reflecting layer 420, reverberation can be divided into the R3 that is reflected by metal level 420a, with two parts of the R4 that is reflected by the second dielectric layer 420c.The reflectivity of each layer and penetrance are determined by the thickness of each layer.The phase difference of R3 and R4 is then determined by thickness and the refractive index of the first dielectric layer 420b.Therefore, suitably adjusting the thickness of the first dielectric layer 420b and refractive index can be so that the phase difference of R3 and R4 just in time be 180 degree.So reverberation R3 and R4 meeting failure interference is cancelled each other.
Fig. 6 looks schematic diagram on the part of organic electric-excitation luminescent displaying panel 300 of Fig. 4 D.Please refer to Fig. 6.In the present embodiment, the first color filter patterns 341 is red filter pattern, and the second color filter patterns 342 is green filter pattern, and the 3rd color filter patterns 343 is blue filter pattern.And illustrate such as Fig. 6, each first opening 321a is less than the size of each the second opening 321b, and the size of each second opening 321b is less than the size of each the 3rd opening 321c.
Please be simultaneously with reference to Fig. 4 D and Fig. 6, the organic electric-excitation luminescent pattern 350 of present embodiment comprises a plurality of red organic electric-excitation luminescent patterns 351, a plurality of green organic electric-excitation luminescent pattern 352 and a plurality of blue organic electric-excitation luminescent pattern 353.Each red organic electric-excitation luminescent pattern 351 can correspond respectively to one of them of a plurality of red filter pattern 341 and dispose, each green organic electric-excitation luminescent pattern 352 corresponding to a plurality of green filter pattern 342 one of them and dispose, and each blue organic electric-excitation luminescent pattern 353 corresponding to a plurality of blue filter pattern 343 one of them and dispose.Therefore, when red organic electric-excitation luminescent pattern 351, green organic electric-excitation luminescent pattern 352, blue organic electric-excitation luminescent pattern 353 are subjected to current drives and when sending ruddiness, green glow, blue light, ruddiness, green glow, blue light pass respectively corresponding red filter pattern 341, green filter pattern 342, blue filter pattern 343 so that the color saturation of ruddiness, green glow, blue light improves.
Have different life-spans (lifetime decay) speed that decay owing to be suitable for sending the organic electric-excitation luminescent pattern 350 of different color light, for the life-span rate of decay trend that makes the organic electric-excitation luminescent pattern 350 that is suitable for sending different color light is consistent, present embodiment sees through the size that changes drive current and adjust opening 321 and reaches.For example, if drive red organic electric-excitation luminescent pattern 351, green organic electric-excitation luminescent pattern 352 and blue organic electric-excitation luminescent pattern 353 with identical drive current, the life-span rate of decay of blue organic electric-excitation luminescent pattern 353 can be higher than the life-span rate of decay of red organic electric-excitation luminescent pattern 351 and green organic electric-excitation luminescent pattern 352, and the life-span rate of decay of green organic electric-excitation luminescent pattern 352 can be higher than the life-span rate of decay of red organic electric-excitation luminescent pattern 351.At this moment, if make the life-span rate of decay trend of red organic electric-excitation luminescent pattern 351, green organic electric-excitation luminescent pattern 352 and blue organic electric-excitation luminescent pattern 353 consistent, must make the drive current that is lower than to drive red organic electric-excitation luminescent pattern 351, green organic electric-excitation luminescent pattern 352 in order to the drive current that drives blue organic electric-excitation luminescent pattern 353, and order is lower than to drive the drive current of red organic electric-excitation luminescent pattern 351 in order to the drive current that drives green organic electric-excitation luminescent pattern 352.Yet this measure will cause ruddiness, green glow different from the intensity (intensity) of blue light, so present embodiment sees through the intensity that the size Control of the first opening 321a, the second opening 321b and the 3rd opening 321c is controlled ruddiness, green glow and blue light.
In addition, organic electric-excitation luminescent displaying panel mainly can be comprised of four part institutes for the environment reflection of light, is respectively the reflection of the reflection of anti-reflecting layer of sandwich construction and the first color filter patterns, the second color filter patterns, the 3rd color filter patterns.As aforementioned, surround lighting can be by the thickness of adjusting each metal level and so that reflectivity approaches zero at the reflectivity of the anti-reflecting layer of sandwich construction.In the present embodiment, the reflectivity of the first color filter patterns 341, the second color filter patterns 342, the 3rd color filter patterns 343 for example is respectively 20%, 50%, 10%, and the first opening 321a, the second opening 321b and the 3rd opening 321c size are respectively 10%, 20%, 30%.Therefore, the overall reflectivity of organic electric-excitation luminescent displaying panel is about (20% * 10%+50% * 20%+10% * 30%)/3=5%.Therefore, organic electric-excitation luminescent displaying panel of the present invention can be eliminated most environment reflection of light effectively, and then improves its contrast.
Fig. 7 is the part sectioned view of the organic electric-excitation luminescent displaying panel of another embodiment of the present invention.Please refer to Fig. 7, organic electric-excitation luminescent displaying panel 500 and first embodiment of present embodiment are similar, and only being in: the metal level 510 of the anti-reflecting layer 320 of sandwich construction of the two Main Differences is that source S with switching transistor is electrically connected.In the present embodiment, metal level 510 is electrically connected pressure drop (IR drop) phenomenon that can slow down voltage source OVdd with the source S of switching transistor.In addition, to have a fixed voltage position accurate if the metal level 510 of the anti-reflecting layer 320 of sandwich construction is connected to voltage source OVdd(), metal level 510 has screen effect.
In sum, organic electric-excitation luminescent displaying panel of the present invention is included in the colored filter of pel array below.This colored filter comprises the anti-reflecting layer of a sandwich construction.Each color filter patterns in the colored filter can be filtered surround lighting, and the anti-reflecting layer of sandwich construction can reduce the reflection of surround lighting on organic electric-excitation luminescent displaying panel, allows organic electric-excitation luminescent displaying panel present good display frame.
Certainly; the present invention also can have other various embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of claim of the present invention.
Claims (17)
1. an organic electric-excitation luminescent displaying panel is characterized in that, comprising:
One substrate;
The anti-reflecting layer of one sandwich construction is disposed on this substrate, and the anti-reflecting layer of this sandwich construction has a plurality of openings;
A plurality of color filter patterns are disposed in those openings;
One pel array is disposed on the anti-reflecting layer and those color filter patterns of this sandwich construction, and wherein this pel array comprises a plurality of the first electrodes that are arrayed;
A plurality of organic electric-excitation luminescent patterns are disposed on those first electrodes; And
One second electrode is disposed on those organic electric-excitation luminescent patterns.
2. organic electric-excitation luminescent displaying panel according to claim 1 is characterized in that, the anti-reflecting layer of this sandwich construction comprises:
One the first metal layer is disposed on this substrate;
One phase deviation layer; And
One second metal level, wherein this phase deviation layer is between this first metal layer and this second metal level.
3. organic electric-excitation luminescent displaying panel according to claim 1 is characterized in that, the anti-reflecting layer of this sandwich construction comprises:
One metal level is disposed on this substrate;
One first dielectric layer; And
One second dielectric layer, wherein this first dielectric layer is between this metal level and this second dielectric layer.
4. organic electric-excitation luminescent displaying panel according to claim 1, it is characterized in that, those openings comprise a plurality of the first openings, a plurality of the second opening and a plurality of the 3rd opening, those color filter patterns comprise a plurality of the first color filter patterns, a plurality of the second color filter patterns and a plurality of the 3rd color filter patterns, respectively this first color filter patterns is inserted respectively in one of them first opening, respectively this second color filter patterns is inserted respectively in one of them second opening, and respectively the 3rd color filter patterns is inserted respectively in one of them the 3rd opening.
5. organic electric-excitation luminescent displaying panel according to claim 4, it is characterized in that, those first color filter patterns are red filter pattern, those second color filter patterns are green filter pattern, those the 3rd color filter patterns are blue filter pattern, respectively this first opening is less than the size of this second opening respectively, and respectively the size of this second opening less than the size of the 3rd opening respectively.
6. organic electric-excitation luminescent displaying panel according to claim 5, it is characterized in that, those organic electric-excitation luminescent patterns comprise a plurality of red organic electric-excitation luminescent patterns, a plurality of green organic electric-excitation luminescent pattern and a plurality of blue organic electric-excitation luminescent pattern, those red organic electric-excitation luminescent patterns are corresponding to those red filter pattern configurations, those green organic electric-excitation luminescent patterns are corresponding to those green filter pattern configurations, and those blue organic electric-excitation luminescent patterns are corresponding to those blue filter pattern configurations.
7. organic electric-excitation luminescent displaying panel according to claim 1 is characterized in that, this pel array more comprises:
The multi-strip scanning line;
Many data wires;
A plurality of switching transistors, respectively a grid of this switching transistor is electrically connected with corresponding scan line respectively, and respectively the one source pole of this switching transistor is electrically connected with corresponding data wire respectively;
A plurality of driving transistorss, respectively a grid of this driving transistors is electrically connected with a drain electrode of corresponding switching transistor respectively, respectively one of this driving transistors drain electrode is electrically connected with corresponding the first electrode respectively, and respectively the one source pole of this driving transistors is coupled to a voltage source; And
One capacitor is electrically coupled between the drain electrode of the source electrode of corresponding driving transistors and corresponding switching transistor.
8. organic electric-excitation luminescent displaying panel according to claim 7 is characterized in that, the anti-reflecting layer of this sandwich construction has at least one deck metal level, and the respectively source electrode of this switching transistor and this at least one deck metal level electric connection.
9. organic electric-excitation luminescent displaying panel according to claim 1 is characterized in that, more comprises an insulating barrier, is covered on the anti-reflecting layer of this sandwich construction, and wherein this insulating barrier is between the anti-reflecting layer and this pel array of this sandwich construction.
10. the manufacture method of an organic electric-excitation luminescent displaying panel is characterized in that, comprising:
Form the anti-reflecting layer of a sandwich construction on a substrate, the anti-reflecting layer of this sandwich construction has a plurality of openings;
In those openings, form a plurality of color filter patterns;
Form a pel array on the anti-reflecting layer of this sandwich construction and those color filter patterns, wherein this pel array comprises a plurality of the first electrodes that are arrayed;
On those first electrodes, form a plurality of organic electric-excitation luminescent patterns; And
On those organic electric-excitation luminescent patterns, form one second electrode.
11. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 10 is characterized in that, the method that forms the anti-reflecting layer of this sandwich construction comprises:
On this substrate, form a first metal layer;
On this first metal layer, form a phase deviation layer; And
On this phase deviation layer, form one second metal level.
12. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 10 is characterized in that, the method that forms the anti-reflecting layer of this sandwich construction comprises:
On this substrate, form a metal level;
On this metal level, form one first dielectric layer; And
On this first dielectric layer, form one second dielectric layer.
13. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 10 is characterized in that, those openings comprise a plurality of the first openings, a plurality of the second opening and a plurality of the 3rd opening, and the method that forms those color filter patterns comprises:
Form a plurality of the first color filter patterns, a plurality of the second color filter patterns and a plurality of the 3rd color filter patterns, wherein respectively this first color filter patterns is inserted respectively in one of them first opening, respectively this second color filter patterns is inserted respectively in one of them second opening, and respectively the 3rd color filter patterns is inserted respectively in one of them the 3rd opening.
14. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 13, it is characterized in that, those first color filter patterns are red filter pattern, those second color filter patterns are green filter pattern, and those the 3rd color filter patterns are blue filter pattern, respectively this first opening is less than the size of this second opening respectively, and respectively the size of this second opening less than the size of the 3rd opening respectively.
15. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 14 is characterized in that, the method that forms those organic electric-excitation luminescent patterns comprises:
Form a plurality of red organic electric-excitation luminescent patterns, a plurality of green organic electric-excitation luminescent pattern and a plurality of blue organic electric-excitation luminescent pattern, wherein those red organic electric-excitation luminescent patterns are corresponding to those red filter pattern configurations, those green organic electric-excitation luminescent patterns are corresponding to those green filter pattern configurations, and those blue organic electric-excitation luminescent patterns are corresponding to those blue filter pattern configurations.
16. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 10 is characterized in that, the method that forms this pel array more comprises:
Form the multi-strip scanning line;
Form many data wires;
Form a plurality of switching transistors, wherein respectively a grid of this switching transistor is electrically connected with corresponding scan line respectively, and wherein respectively the one source pole of this switching transistor is electrically connected with corresponding data wire respectively;
Form a plurality of driving transistorss, wherein respectively a grid of this driving transistors is electrically connected with a drain electrode of corresponding switching transistor respectively, respectively one of this driving transistors drain electrode is electrically connected with corresponding the first electrode respectively, and respectively the one source pole of this driving transistors is coupled to a voltage source; And
Form a capacitor, wherein this capacitor electrically is coupled between the drain electrode of the source electrode of corresponding driving transistors and corresponding switching transistor.
17. the manufacture method of organic electric-excitation luminescent displaying panel according to claim 16 is characterized in that, the anti-reflecting layer of this sandwich construction has at least one deck metal level, and the respectively source electrode of this switching transistor and this at least one deck metal level electric connection.
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| CN102856351B (en) | 2015-05-13 |
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