CN101694764B - Flat panel display device with dynamic adjustment mechanism and image display method thereof - Google Patents
Flat panel display device with dynamic adjustment mechanism and image display method thereof Download PDFInfo
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- CN101694764B CN101694764B CN200910205546XA CN200910205546A CN101694764B CN 101694764 B CN101694764 B CN 101694764B CN 200910205546X A CN200910205546X A CN 200910205546XA CN 200910205546 A CN200910205546 A CN 200910205546A CN 101694764 B CN101694764 B CN 101694764B
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Abstract
The invention provides a flat panel display device with a dynamic adjustment mechanism and an image display method thereof. The flat panel display device comprises a four-color converting unit, a backlight control unit, a backlight module and a pixel array, wherein the four-color converting unit is used for providing a first group of four-color image signals corresponding to a three-color image input signal according to a fronting conversion mapping table, and providing a plurality of converting and amplifying factors which correspond to one another. The backlight control unit generates backlight adjustment signals according to the plurality of converting and amplifying factors. The backlight module adjusts the backlight output strength according to the backlight adjustment signals. Additionally, the four-color converting unit is used for providing a second group of four-color image signals corresponding to the three-color image input signals according to the backlight adjustment signals. The pixel array is used for being matched with the backlight output according to the second group of four-color image signals so as to display the images.
Description
Technical field
The invention relates to a kind of flat display apparatus, refer to a kind of flat display apparatus and its method for displaying image of tool dynamic adjustment mechanism especially.
Background technology
Flat display apparatus (Flat Panel Display) has that external form is frivolous, power saving and advantage such as radiationless, so be widely used on the electronic products such as computer screen, mobile phone, PDA(Personal Digital Assistant), flat-surface television.In various flat display apparatus, liquid crystal indicator is widely used with its lower power consumption.The tradition liquid crystal indicator is to use based on three look display techniques of rgb pixel and comes display color, yet picture brightness is unsatisfactory, for improving picture brightness, just develops the four look display techniques that based on the RGBW pixel of tool white pixel.But after liquid crystal indicator changed to four look display techniques by three look display techniques, the area of rgb pixel can dwindle, and caused liquid crystal indicator showing pure color or during near the color of pure color, can't show its due brightness and chroma.In other words, add that white pixel can reduce pure color or, thereby be difficult to possess hi-vision reproduction degree near the chroma-luminance and the chroma of pure color.
Summary of the invention
According to embodiments of the invention, the flat display apparatus that it discloses a kind of tool dynamic adjustment mechanism is used for making based on the shown image of four-color image signal and still possesses hi-vision reproduction degree.This kind flat display apparatus comprises four look converting units, dynamic backlight control module, backlight module, source electrode driver and pixel-array unit.Four look converting units comprise the preposition conversion table of comparisons.Four look converting units are to be used for providing first group of four-color image signal corresponding to the image three-colo(u)r input signal according to the preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided, and be used for the image three-colo(u)r input signal being converted to second group of four-color image signal according to backlight adjustment signals.The dynamic backlight control module is electrically connected on four look converting units, is used for according to a plurality of conversion amplification factors to produce backlight adjustment signals.Backlight module is electrically connected on the dynamic backlight control module, is used to provide output backlight, and wherein the intensity of output backlight is to adjust according to backlight adjustment signals.Source electrode driver is electrically connected on four look converting units, is used for according to second group of four-color image signal so that a plurality of data-signals to be provided.Pixel-array unit is electrically connected on source electrode driver, is used for cooperating output backlight with display image according to a plurality of data-signals.
According to embodiments of the invention, the flat display apparatus that it discloses a kind of tool dynamic adjustment mechanism in addition is used for making based on the shown image of four-color image signal and still possesses hi-vision reproduction degree.This kind flat display apparatus comprises four look converting units, dynamic backlight control module, compensating unit, backlight module, source electrode driver and pixel-array unit.Four look converting units comprise the preposition conversion table of comparisons.Four look converting units are to be used for providing first group of four-color image signal corresponding to the image three-colo(u)r input signal according to the preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided.The dynamic backlight control module is electrically connected on four look converting units, is used for according to a plurality of conversion amplification factors to produce backlight adjustment signals.Compensating unit is electrically connected on four look converting units and dynamic backlight control module, and being used for according to backlight adjustment signals is second group of four-color image signal with first group of four-color image signal compensation.Backlight module is electrically connected on the dynamic backlight control module, is used to provide output backlight, and wherein the intensity of output backlight is to adjust according to backlight adjustment signals.Source electrode driver is electrically connected on compensating unit, is used for according to second group of four-color image signal so that a plurality of data-signals to be provided.Pixel-array unit is electrically connected on source electrode driver and gate drivers, is used for cooperating output backlight with display image according to a plurality of data-signals.
The present invention discloses a kind of method for displaying image that is used for flat display apparatus in addition, is used for making based on the shown image of four-color image signal still possessing hi-vision reproduction degree.This kind method for displaying image comprises: receive the image three-colo(u)r input signal; Provide first group of four-color image signal according to the preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided corresponding to the image three-colo(u)r input signal; According to a plurality of conversion amplification factors so that backlight adjustment signals to be provided; According to backlight adjustment signals to adjust the intensity of output backlight; According to backlight adjustment signals to produce second group of four-color image signal; And according to second group of four-color image signal and output backlight with display image.
Description of drawings
Fig. 1 is the structural representation of the flat display apparatus 100 of first embodiment of the invention.
Fig. 2 is the structural representation of the flat display apparatus 200 of second embodiment of the invention.
Fig. 3 is the structural representation of the flat display apparatus 300 of third embodiment of the invention.
Fig. 4 is used for the process flow diagram of preferred embodiment of the method for displaying image of flat display apparatus for the present invention.
Drawing reference numeral:
100,200,300 flat display apparatus
110,210,310 4 look converting units
111,211, the 311 preposition conversion tables of comparisons
120,320 dynamic backlight control modules
121,321 amplification factor analytic units
123, the 323 adjustment tables of comparisons backlight
130,330 backlight driving units
135,335 work period adjustment units
140,340 backlight modules
170,370 source electrode drivers
180,380 gate drivers
190,390 pixel-array unit
195,395 pixel cells
215_1～215_N input conversion the table of comparisons
350 compensating units
355_1～355_N compensates the table of comparisons
900 flow processs
The Clc liquid crystal capacitance
The Cst storage capacitors
The Qd data switch
Ri, Gi, Bi image input signal
R ', G ', B ', W ', R1, G1, B1, W1, picture signal
R2、G2、B2、W2
S910～S970 step
The Sadj backlight adjustment signals
The Sana assay value
Scorr changes corrected signal
SD1～SDm data-signal
SG1～SGn signal
Spwm pulse wave width modulation signal
Ssca changes amplification factor
Embodiment
Hereinafter according to flat display apparatus and its method for displaying image of tool dynamic adjustment mechanism of the present invention, cooperate appended graphic elaborating especially exemplified by embodiment, but the embodiment that is provided not is the scope that contains in order to restriction the present invention, carry out precedence and the method flow number of steps is more non-in order to limit it, any execution flow process that reconfigures by method step, the method with impartial effect that produces is all the scope that the present invention is contained.
Fig. 1 is the structural representation of the flat display apparatus 100 of first embodiment of the invention.As shown in Figure 1, flat display apparatus 100 comprises four look converting units 110, dynamic backlight control module 120, backlight driving unit 130, backlight module 140, source electrode driver 170, gate drivers 180 and pixel-array unit 190.Pixel-array unit 190 comprises a plurality of pixel cells 195, and each pixel cell 195 has data switch Qd, liquid crystal capacitance Clc and storage capacitors Cst.Source electrode driver 170 is used to provide a plurality of data-signal SD1～SDm, gate drivers 180 is used to provide a plurality of signal SG1～SGn and writes running to control the relevant of a plurality of data-signal SD1～SDm, and pixel-array unit 190 promptly cooperates output backlight that backlight module 140 provided with display image according to a plurality of data-signal SD1～SDm.
Four look converting units 110 are electrically connected on dynamic backlight control module 120 and source electrode driver 170, are used for image three-colo(u)r input signal Ri, and Gi, Bi are converted to the four-color image signal with white image signal.Four look converting units 110 comprise the preposition conversion table of comparisons 111, the preposition conversion table of comparisons 111 is to be used to provide corresponding to image three-colo(u)r input signal Ri, Gi, first group of four-color image signal of Bi, that is the preposition conversion table of comparisons 111 provides image three-colo(u)r input signal Ri, Gi, the contrast relationship of Bi and first group of four-color image signal.Four look converting units 110 in addition will be corresponding to image three-colo(u)r input signal Ri, and a plurality of conversion amplification factor Ssca that Gi, Bi are converted to first group of four-color image signal export dynamic backlight control module 120 to.In one embodiment, each group image three-colo(u)r input signal Ri, Gi, Bi belongs to pure color or near pure color and/or cooperate its brightness and determine corresponding conversion amplification factor Ssca according to it, for example as if one group of image three-colo(u)r input signal Ri, Gi, Bi are in order to show trichromatic blueness, that is the value of signal Ri and Gi is zero, and then corresponding conversion amplification factor Ssca can be made as zero.
Dynamic backlight control module 120 comprises the amplification factor analytic unit 121 and the adjustment table of comparisons 123 backlight.Amplification factor analytic unit 121 is to be used for a plurality of groups of image three-colo(u)r input signal Ri to each picture, Gi, and a plurality of conversion amplification factor Ssca execution analyses of Bi institute mapping are handled to produce assay value Sana.In one embodiment, amplification factor analytic unit 121 is to be used for a plurality of groups of image three-colo(u)r input signal Ri to each picture, Gi, a plurality of conversion amplification factor Ssca of Bi institute mapping carry out statistical treatment, count value corresponding to each conversion amplification factor Ssca is provided according to this, again a plurality of count values are accumulated as an aggregate-value successively according to the incremental order of conversion amplification factor Ssca, when this aggregate-value is about a preset value, acquisition is corresponding to being changed amplification factor Ssca by the maximum of accumulated counts value, if this maximum conversion amplification factor Ssca is littler, it is brighter to represent that then the output backlight of backlight module 140 need be adjusted.Note that this preset value can be the number of the default number percent of picture pixel sum, such as this preset value can be 20% number of picture pixel sum.
The adjustment table of comparisons 123 backlight is the backlight adjustment signals Sadj that are used to provide corresponding to assay value Sana, that is is used to provide the contrast relationship of assay value Sana and backlight adjustment signals Sadj.In other words, dynamic backlight control module 120 is to be used for analysis result according to 121 couples of a plurality of conversion amplification factor Ssca of amplification factor analytic unit so that corresponding backlight adjustment signals Sadj to be provided.Dynamic backlight control module 120 produces conversion corrected signal Scorr according to backlight adjustment signals Sadj in addition and is fed into four look converting units 110, and four look converting units 110 can produce the correction conversion table of comparisons according to the conversion corrected signal Scorr and the preposition conversion table of comparisons 111, provide according to this corresponding to image three-colo(u)r input signal Ri, Gi, second group of four-color image signal R ' of Bi, G ', B ', W ' is to source electrode driver 170, source electrode driver 170 and then according to second group of four-color image signal R ', G ', B ', W ' is to produce a plurality of data-signal SD1～SDm.Backlight driving unit 130 is electrically connected between dynamic backlight control module 120 and the backlight module 140, is used for producing pulse wave width modulation signal Spwm according to backlight adjustment signals Sadj and produces required output backlight to drive backlight module 140.Backlight driving unit 130 comprises work period adjustment unit 135, and the work period of pulse wave width modulation signal Spwm is to be carried out according to backlight adjustment signals Sadj by work period adjustment unit 135 to adjust running.
In one embodiment, if in a plurality of picture signals of picture to be shown, belong to pure color or big more near the picture signal quantity of pure color, that is a plurality of conversion amplification factor Ssca are big more less than the quantity of preset critical, then the backlight adjustment signals Sadj that is provided by the adjustment table of comparisons 123 backlight is also big more, improve the output backlight of backlight module 140 according to this, and according to backlight adjustment signals Sadj adjusting non-genus pure color or non-picture signal near pure color, and/or adjust and belong to pure color or near the picture signal of pure color.In another embodiment, backlight adjustment signals Sadj is that rough being proportional to belongs to pure color or near the picture signal quantity of pure color, the then rough backlight adjustment signals Sadj that is proportional to of the amount of heightening of output backlight.In addition, conversion corrected signal Scorr is also rough to be proportional to backlight adjustment signals Sadj, so the signal amount of turning down of non-genus pure color or non-picture signal near pure color is the rough amount of heightening that is proportional to output backlight.
From the above, flat display apparatus 100 be according to a plurality of image input signals belong to pure color or near the picture signal quantity of pure color to heighten output backlight, and according to the amount of heightening of output backlight to downgrade the signal value of non-genus pure color or non-picture signal near pure color, be used for making based on the shown image of four-color image signal and still possess hi-vision reproduction degree.
Fig. 2 is the structural representation of the flat display apparatus 200 of second embodiment of the invention.As shown in Figure 2, the structure of flat display apparatus 200 is to be similar to flat display apparatus shown in Figure 1 100, and main difference is four look converting units 110 are replaced into four look converting units 210.Four look converting units 210 comprise the preposition conversion table of comparisons 211 and a plurality of input conversion table of comparisons 215_1～215_N, and the function of the wherein preposition conversion table of comparisons 211 is same as the preposition conversion table of comparisons 111 shown in Figure 1, so repeat no more.Behind the conversion corrected signal Scorr that four look converting units 210 receive by 120 feed-ins of dynamic backlight control module, four look converting units 210 can be selected the corresponding input conversion table of comparisons according to conversion corrected signal Scorr from a plurality of input conversion table of comparisons 215_1～215_N, provide according to this corresponding to image three-colo(u)r input signal Ri, Gi, second group of four-color image signal R ' of Bi, G ', B ', W '.Need not be used for carrying out the correlation computations processing to produce the aforesaid correction conversion table of comparisons, so can improve conversion speed compared to four look converting units, 110, four look converting units 210 according to the conversion corrected signal Scorr and the preposition conversion table of comparisons 111.
Fig. 3 is the structural representation of the flat display apparatus 300 of third embodiment of the invention.As shown in Figure 3, flat display apparatus 300 comprises four look converting units 310, dynamic backlight control module 320, backlight driving unit 330, backlight module 340, compensating unit 350, source electrode driver 370, gate drivers 380 and pixel-array unit 390.Pixel-array unit 390 comprises a plurality of pixel cells 395, and each pixel cell 395 has data switch Qd, liquid crystal capacitance Clc and storage capacitors Cst.Source electrode driver 370 is used to provide a plurality of data-signal SD1～SDm, gate drivers 380 is used to provide a plurality of signal SG1～SGn and writes running to control the relevant of a plurality of data-signal SD1～SDm, and pixel-array unit 390 promptly cooperates output backlight that backlight module 340 provided with display image according to a plurality of data-signal SD1～SDm.
Four look converting units 310 are electrically connected on dynamic backlight control module 320 and compensating unit 350, are used for image three-colo(u)r input signal Ri, and Gi, Bi are converted to first group of four-color image signal R1 with white image signal W1, G1, B1, W1.Four look converting units 310 comprise the preposition conversion table of comparisons 311, and the preposition conversion table of comparisons 311 is to be used to provide corresponding to image three-colo(u)r input signal Ri, Gi, first group of four-color image signal R1 of Bi, G1, B1, W1, that is the preposition conversion table of comparisons 311 provides image three-colo(u)r input signal Ri, Gi, Bi and first group of four-color image signal R1, G1, B1, the contrast relationship of W1.First group of four-color image signal R1, G1, B1, W1 is transferred into compensating unit 350, and four look converting units 310 in addition will be corresponding to image three-colo(u)r input signal Ri, Gi, Bi is converted to first group of four-color image signal R1, G1, B1, a plurality of conversion amplification factor Ssca of W1 export dynamic backlight control module 320 to.
Dynamic backlight control module 320 comprises the amplification factor analytic unit 321 and the adjustment table of comparisons 323 backlight.Amplification factor analytic unit 321 is to be used for carrying out the analyzing and processing of a plurality of conversion amplification factor Ssca to produce assay value Sana.The adjustment table of comparisons 323 backlight is the backlight adjustment signals Sadj that are used to provide corresponding to assay value Sana, that is is used to provide the contrast relationship of assay value Sana and backlight adjustment signals Sadj.Dynamic backlight control module 320 produces conversion corrected signal Scorr according to backlight adjustment signals Sadj in addition and is fed into compensating unit 350.Compensating unit 350 comprises a plurality of compensation table of comparisons 355_1～355_N.Behind the conversion corrected signal Scorr that compensating unit 350 receives by 320 feed-ins of dynamic backlight control module, compensating unit 350 can be selected the corresponding compensation table of comparisons according to conversion corrected signal Scorr from a plurality of compensation table of comparisons 355_1～355_N, according to this with first group of four-color image signal R1, G1, B1, W1 is compensated for as second group of four-color image signal R2, G2, B2, W2 exports source electrode driver 370 to, source electrode driver 370 and then according to second group of four-color image signal R2, G2, B2, W2 is to produce a plurality of data-signal SD1～SDm.Backlight driving unit 330 is electrically connected between dynamic backlight control module 320 and the backlight module 340, is used for producing pulse wave width modulation signal Spwm according to backlight adjustment signals Sadj and produces required output backlight to drive backlight module 340.Backlight driving unit 330 comprises work period adjustment unit 335, and the work period of pulse wave width modulation signal Spwm is to be carried out according to backlight adjustment signals Sadj by work period adjustment unit 335 to adjust running.
In one embodiment, if in a plurality of picture signals of picture to be shown, belong to pure color or big more near the picture signal quantity of pure color, that is a plurality of conversion amplification factor Ssca are big more less than the quantity of preset critical, then the backlight adjustment signals Sadj that is provided by the adjustment table of comparisons 323 backlight is also big more, improve the output backlight of backlight module 340 according to this, and according to backlight adjustment signals Sadj compensating non-genus pure color or non-picture signal near pure color, and/or compensation belongs to pure color or near the picture signal of pure color.In another embodiment, backlight adjustment signals Sadj is that rough being proportional to belongs to pure color or near the picture signal quantity of pure color, the then rough backlight adjustment signals Sadj that is proportional to of the amount of heightening of output backlight.In addition, conversion corrected signal Scorr is also rough to be proportional to backlight adjustment signals Sadj, so the signal compensation amount of non-genus pure color or non-picture signal near pure color is the rough amount of heightening that is proportional to output backlight.
From the above, flat display apparatus 300 be according to a plurality of image input signals belong to pure color or near the picture signal quantity of pure color to heighten output backlight, and according to the amount of heightening of output backlight to compensate the signal value of non-genus pure color or non-picture signal near pure color, be used for making based on the shown image of four-color image signal and still possess hi-vision reproduction degree.
Fig. 4 is used for the process flow diagram of preferred embodiment of the method for displaying image of flat display apparatus for the present invention.Flow process 900 shown in Figure 4 is to be the method for displaying image based on the flat display apparatus 300 of the flat display apparatus 200 of the flat display apparatus 100 of Fig. 1, Fig. 2 or Fig. 3.The flow process 900 of method for displaying image comprises the following step:
Step S910: receive the image three-colo(u)r input signal;
Step S920: provide first group of four-color image signal according to the preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided corresponding to the image three-colo(u)r input signal;
Step S930: according to a plurality of conversion amplification factors so that backlight adjustment signals to be provided;
Step S940: according to backlight adjustment signals to adjust the intensity of output backlight;
Step S950: change corrected signal to produce according to backlight adjustment signals;
Step S960: according to changing corrected signal to produce second group of four-color image signal; And
Step S970: according to second group of four-color image signal and output backlight with display image.
In the flow process 900 of method for displaying image, each group four-color image signal can comprise the white image signal.In embodiment based on the flat display apparatus 100 of Fig. 1, step S960 is described according to changing corrected signal to produce second group of four-color image signal, be for revising the conversion table of comparisons to produce, and change the table of comparisons second group of four-color image signal corresponding to the image three-colo(u)r input signal is provided according to revising according to conversion corrected signal and the preposition conversion table of comparisons.In embodiment based on the flat display apparatus 200 of Fig. 2, step S960 is described according to changing corrected signal to produce second group of four-color image signal, be for from a plurality of inputs conversion tables of comparisons, selecting the corresponding input conversion table of comparisons, and provide second group of four-color image signal corresponding to the image three-colo(u)r input signal according to the selected corresponding input conversion table of comparisons according to the conversion corrected signal.In embodiment based on the flat display apparatus 300 of Fig. 3, step S960 is described according to changing corrected signal to produce second group of four-color image signal, be for from a plurality of compensation tables of comparisons, selecting the corresponding compensation table of comparisons according to the conversion corrected signal, and corresponding to compensate the table of comparisons be second group of four-color image signal with first group of four-color image signal compensation according to selected.
Step S930 described according to a plurality of conversion amplification factors so that backlight adjustment signals to be provided, be for analyzing a plurality of conversion amplification factors producing corresponding assay value, and according to assay value so that backlight adjustment signals to be provided.In one embodiment, assay value is in a plurality of conversion amplification factors, and less than the quantity of the conversion amplification factor of preset critical, that is assay value can be and belongs to pure color or near the picture signal quantity of pure color.Step S940 described according to backlight adjustment signals to adjust the intensity of output backlight, comprise according to backlight adjustment signals adjusting the work period of pulse wave width modulation signal, and according to the pulse wave width modulation signal to drive output backlight.In one embodiment, the amount of heightening of work period is the rough backlight adjustment signals that is proportional to, that is the amount of heightening of output backlight is that rough being proportional to belongs to pure color or near the picture signal quantity of pure color.
In sum, flat display apparatus of the present invention be according to a plurality of image input signals belong to pure color or near the picture signal quantity of pure color to heighten the intensity of output backlight, and according to the amount of heightening of output backlight to downgrade the signal value of non-genus pure color or non-picture signal near pure color, be used for making based on the shown image of four-color image signal and still possess hi-vision reproduction degree.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any technician with the technical field of the invention; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention defines and is as the criterion when looking appended claim scope.
Claims (16)
1. the flat display apparatus of a tool dynamic adjustment mechanism is characterized in that, described flat display apparatus comprises:
One or four look converting units, comprise a preposition conversion table of comparisons, described four look converting units are to be used for providing one first group of four-color image signal corresponding to the image three-colo(u)r input signal according to the described preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided, and be used for described image three-colo(u)r input signal being converted to one second group of four-color image signal according to a backlight adjustment signals;
One dynamic backlight control module is electrically connected on described four look converting units, is used for according to described a plurality of conversion amplification factors to produce described backlight adjustment signals; Described dynamic backlight control module comprises: an amplification factor analytic unit, be used for analyzing described a plurality of conversion amplification factor producing an assay value, and this assay value is to belong to pure color or near the picture signal quantity of pure color; And an adjustment table of comparisons backlight, be used to provide described backlight adjustment signals corresponding to described assay value;
One backlight module is electrically connected on described dynamic backlight control module, is used to provide an output backlight, and the intensity of wherein said output backlight is to adjust according to described backlight adjustment signals;
The one source pole driver is electrically connected on described four look converting units, is used for according to described second group of four-color image signal so that a plurality of data-signals to be provided; And
One pixel-array unit is electrically connected on described source electrode driver, is used for cooperating described output backlight to show an image according to described a plurality of data-signals.
2. flat display apparatus as claimed in claim 1 is characterized in that other comprises:
One backlight driving unit is electrically connected between described dynamic backlight control module and the described backlight module, is used for producing a pulse wave width modulation signal to drive described backlight module according to described backlight adjustment signals.
3. flat display apparatus as claimed in claim 2 is characterized in that, described backlight driving unit comprises:
One work period adjustment unit is used for according to described backlight adjustment signals to adjust the work period of described pulse wave width modulation signal.
4. flat display apparatus as claimed in claim 1 is characterized in that, described dynamic backlight control module is used for providing a conversion corrected signal according to described backlight adjustment signals in addition, and described four look converting units comprise in addition:
A plurality of input conversion tables of comparisons, described four look converting units are selected a corresponding input conversion table of comparisons according to described conversion corrected signal from the described a plurality of inputs conversion tables of comparisons, and provide described second group of four-color image signal corresponding to described image three-colo(u)r input signal according to the described corresponding input conversion table of comparisons.
5. flat display apparatus as claimed in claim 1, it is characterized in that, described dynamic backlight control module is used for providing a conversion corrected signal according to described backlight adjustment signals in addition, described four look converting units are used for revising the conversion table of comparisons according to the described preposition conversion table of comparisons and described conversion corrected signal to produce one in addition, and provide described second group of four-color image signal corresponding to described image three-colo(u)r input signal according to the described correction conversion table of comparisons.
6. flat display apparatus as claimed in claim 1 is characterized in that other comprises:
One gate drivers is electrically connected on described pixel-array unit, is used to provide a plurality of signals to control the running that writes of described a plurality of data-signals.
7. the flat display apparatus of a tool dynamic adjustment mechanism is characterized in that, described flat display apparatus comprises:
One or four look converting units, comprise a preposition conversion table of comparisons, described four look converting units are to be used for providing one first group of four-color image signal corresponding to the image three-colo(u)r input signal according to the described preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided;
One dynamic backlight control module is electrically connected on described four look converting units, is used for according to described a plurality of conversion amplification factors to produce a backlight adjustment signals; Described dynamic backlight control module comprises: an amplification factor analytic unit, be used for analyzing described a plurality of conversion amplification factor producing an assay value, and this assay value is to belong to pure color or near the picture signal quantity of pure color; And an adjustment table of comparisons backlight, be used to provide described backlight adjustment signals corresponding to described assay value;
One compensating unit is electrically connected on described four look converting units and described dynamic backlight control module, and being used for according to described backlight adjustment signals is one second group of four-color image signal with described first group of four-color image signal compensation;
One backlight module is electrically connected on described dynamic backlight control module, is used to provide an output backlight, and the intensity of wherein said output backlight is to adjust according to described backlight adjustment signals;
The one source pole driver is electrically connected on described compensating unit, is used for according to described second group of four-color image signal so that a plurality of data-signals to be provided;
One gate drivers is electrically connected on pixel-array unit, is used to provide a plurality of signals to control the running that writes of described a plurality of data-signals; And
One pixel-array unit is electrically connected on described source electrode driver and described gate drivers, is used for cooperating described output backlight to show an image according to described a plurality of data-signals.
8. flat display apparatus as claimed in claim 7 is characterized in that, described dynamic backlight control module is used for providing a conversion corrected signal according to described backlight adjustment signals in addition, and described compensating unit comprises:
A plurality of compensation tables of comparisons, described compensating unit is selected corresponding compensation tables of comparisons according to described conversion corrected signal from the described a plurality of compensation tables of comparisons, and is described second group of four-color image signal according to the described corresponding compensation table of comparisons with described first group of four-color image signal compensation.
9. flat display apparatus as claimed in claim 7 is characterized in that other comprises:
One backlight driving unit is electrically connected between described dynamic backlight control module and the described backlight module, is used for producing a pulse wave width modulation signal to drive described backlight module according to described backlight adjustment signals.
10. flat display apparatus as claimed in claim 9 is characterized in that, described backlight driving unit comprises:
One work period adjustment unit is used for according to described backlight adjustment signals to adjust the work period of described pulse wave width modulation signal.
11. a method for displaying image that is used for flat display apparatus is characterized in that, described method for displaying image comprises:
Receive one group of image three-colo(u)r input signal;
Provide one first group of four-color image signal according to a preposition conversion table of comparisons, and corresponding a plurality of conversion amplification factor is provided corresponding to this group image three-colo(u)r input signal;
Analyze described a plurality of conversion amplification factor producing an assay value, this assay value is to belong to pure color or near the picture signal quantity of pure color; And
According to described assay value so that described backlight adjustment signals to be provided;
Adjust the intensity of an output backlight according to described backlight adjustment signals;
Produce one second group of four-color image signal according to described backlight adjustment signals; And
Show an image according to described second group of four-color image signal and described output backlight.
12. method for displaying image as claimed in claim 11 is characterized in that, produces the step that described second group of four-color image interrogated according to described backlight adjustment signals, comprises:
Produce a conversion corrected signal according to described backlight adjustment signals;
Produce a correction conversion table of comparisons according to the described conversion corrected signal and the described preposition conversion table of comparisons; And
Provide described second group of four-color image signal of changing corresponding to this group image three-colo(u)r input signal according to the described correction conversion table of comparisons.
13. method for displaying image as claimed in claim 11 is characterized in that, produces the step that described second group of four-color image interrogated according to described backlight adjustment signals, comprises:
Produce a conversion corrected signal according to described backlight adjustment signals;
From a plurality of input conversion tables of comparisons, select a corresponding input conversion table of comparisons according to described conversion corrected signal; And
Provide described second group of four-color image signal of changing corresponding to this group image three-colo(u)r input signal according to the described corresponding input conversion table of comparisons.
14. method for displaying image as claimed in claim 11 is characterized in that, produces the step that described second group of four-color image interrogated according to described backlight adjustment signals, comprises:
Produce a conversion corrected signal according to described backlight adjustment signals;
From a plurality of compensation tables of comparisons, select a corresponding compensation table of comparisons according to described conversion corrected signal; And
Is described second group of four-color image signal according to the described corresponding compensation table of comparisons with described first group of four-color image signal compensation.
15. method for displaying image as claimed in claim 11 is characterized in that, adjusts the step of the intensity of described output backlight according to described backlight adjustment signals, comprises:
Adjust the work period of a pulse wave width modulation signal according to described backlight adjustment signals; And
Drive described output backlight according to described pulse wave width modulation signal.
16. method for displaying image as claimed in claim 11 is characterized in that, described assay value is in described a plurality of conversion amplification factors, less than the quantity of the conversion amplification factor of a critical value.
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| CN101887681B (en) * | 2010-07-16 | 2012-07-25 | 友达光电股份有限公司 | Red-green-blue-white display device and control method |
| KR101952449B1 (en) * | 2012-10-29 | 2019-05-31 | 엘지디스플레이 주식회사 | Timing controller, driving method thereof, and flat panel display device using the same |
| US9324277B2 (en) | 2013-12-06 | 2016-04-26 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight driving circuit, liquid crystal display device and drive method |
| CN103680422B (en) * | 2013-12-06 | 2016-02-03 | 深圳市华星光电技术有限公司 | A kind of backlight source driving circuit and liquid crystal indicator and driving method |
| CN104732924B (en) * | 2015-03-27 | 2017-04-19 | 深圳市华星光电技术有限公司 | Conversion method and conversion system for converting three-color data to four-color data |
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