CN1808551A - Grayscale brightness compensation method and its apparatus - Google Patents
Grayscale brightness compensation method and its apparatus Download PDFInfo
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- CN1808551A CN1808551A CN 200510003899 CN200510003899A CN1808551A CN 1808551 A CN1808551 A CN 1808551A CN 200510003899 CN200510003899 CN 200510003899 CN 200510003899 A CN200510003899 A CN 200510003899A CN 1808551 A CN1808551 A CN 1808551A
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Abstract
The disclosed gray-scale brightness compensation device for LCD with N-Line inversion drive method comprises: generating n group gamma voltages with the mth gray scale, selecting the proper voltage to output to the DAC with a multitask device controlled by a control signal; when on positive polarity, controlling with the control signal to output higher voltage in the first horizontal line time when inversion; when on negative polarity, controlling to output lower voltage.
Description
Technical field
The invention relates to a kind of display mode and device thereof of GTG brightness, and during particularly relevant for N line conversion (N-Line Inversion) driving method that a kind of LCD adopted, GTG brightness compensates the method and the device thereof of required use through gray scale voltage.
Background technology
In recent years, because advantages such as that display panels has is in light weight, size thin, area is changeable, low operating voltage, power saving and radiationless line become the main flow of display panel gradually and have and get over important gesture.
For display panels,, can not be fixed under the voltage of a certain particular polarity exactly because liquid crystal molecule itself has a specific character always.Otherwise when of long duration, even voltage is removed, liquid crystal molecule but can can't rotate along with the variation of electric field because its characteristic is destroyed again.Therefore, for display panels,, still the polarity of voltage that is applied on the liquid crystal must be changed, gone to pot to avoid the liquid crystal molecule characteristic even shown at set intervals picture does not change.In the existing driving method for liquid crystal display panel of institute, the method of reversal is exactly that a voltage difference that puts on the liquid crystal molecule two ends is divided into two kinds of positive electricity pressure reduction and negative electricity pressure reduction, and the method for reversal comprises: picture conversion (frame inversion), rank transformation (row inversion), line translation (column inversion) and point transformation (dot inversion).In the middle of above-mentioned several conversion regime, whether identical difference be in the polarity between adjacent two pixels (pixel) on the display panels, and the counter-rotating of each picture element polarity is synchronous with the scanning (scanning) of whole front panel image basically.Because point transformation (dot inversion) causes the problem that (cross-talk) got in flicker (flicker) and friendship least easily, therefore used widely at present.
In existing point transformation (dot inversion) mode, develop again single line conversion (one-lineinversion), two-wire conversion (two-line inversion), so that N line conversion modes such as (N-line inversion), and wherein the polarity of N line conversion distributes can distribute according to the polarity of two-wire conversion with sweep waveform and analogizes with sweep waveform and get.
Fig. 1 is the system architecture diagram of conventional liquid crystal source electrode drive circuit.Include: latch unit 100, accurate device 102, gamma resistance 104, digital to analog converter 108 and the output buffer 110 of changing in position.Numerical data writes in the latch unit 100, when latch unit 100 stores a horizontal image data, these data can be exported simultaneously to the accurate device 102 that changes in position, the accurate voltage quasi position that changes device 102 meetings change digital image data in position exports digital to analog converter 108 again to, the digital image data that digital to analog converter 108 is received will be exported the analog image data to output buffer 110, by output buffer 110 image data is write liquid crystal more at last, and wherein output buffer 110 is made up of single gain negative feedback operational amplifier.
Because the conduction resistance value of panel of LCD upper film transistor (TFT) is very big, therefore will cause RC time constant that picture element discharges and recharges also along with becoming big.Shown in picture element capacitor charge and discharge figure on the LCD of Fig. 2, discharging and recharging of electric charge is not directly just to reach target voltage, therefore can cause the existence of an error voltage, cause that the horizontal error voltage of article one can be greater than the later horizontal line of second in the same polarity.If the LCD with XGA resolution (1024 * 768) is an example, the horizontal write time of each bar is about 20 μ S, if the time constant of each picture element is 5 μ S, 1.8% error voltage generation is arranged approximately then, if with 10 volts liquid crystal operation voltage, error voltage is about 183mV.For more high-resolution LCD, because the horizontal line time is shorter, the error voltage that Gu Qisuo causes will be bigger.
When arranging in pairs or groups N line conversion driving method with traditional driving circuit, have following shortcoming:
One, a gamma (gamma) resistance because each GTG of conventional ADS driving circuit is all arranged in pairs or groups, so each gray scale voltage is all fixed value.
When two, adopting N line conversion driving method, though can reach purpose of power saving, because every N bar horizontal line time, polarity just need be reversed, and therefore can cause adjacent two horizontal electric charge differences that discharge and recharge, and causes the GTG display result also different.Therefore when whole display shows identical GTG value, will on panel, see light and dark striped.
For display panels, when adopting N line conversion driving method, therefore apparent especially important of the driving circuit that can avoid problem such as light and dark and method.
Summary of the invention
Characteristic of the present invention provides a kind of grayscale brightness compensation method, but essence is got rid of one or more problems that cause because of existing technology limitation and toilet not.
The invention provides a kind of grayscale brightness compensation method, be applicable to a display panels, many the horizontal lines that this display panels has many data lines and from top to bottom arranges in regular turn perpendicular to data line, these many data lines have many pixels, wherein the signal that provides of each pixel basis data line produces corresponding GTG brightness, when this gray scale voltage compensation method comprises corresponding to a certain GTG brightness, it is available to have a plurality of gray scale voltages, when picture element discharge and recharge deficiency of time the time, can select than target voltage is the purpose that high or low voltage reaches the gray scale voltage compensation, and its system of selection can be controlled by a control signal.
One of the present invention embodiment provides a kind of grayscale brightness compensation mechanism, its method is for identical GTG brightness, when pixel is positive polarity, pixel for the duration of charging deficiency provides a control signal, this control signal can be by in a plurality of gray scale voltages, select a higher gray scale voltage to compensate, the size of bucking voltage is determined by error voltage.
One of the present invention embodiment provides a kind of grayscale brightness compensation mechanism, its method is for identical GTG brightness, when pixel is negative polarity, the pixel of deficiency provides a control signal for discharge time, this control signal can be by in a plurality of gray scale voltages, select low gray scale voltage to compensate, the size of bucking voltage is determined by error voltage.
Another embodiment of the present invention provides a kind of grayscale brightness compensation mechanism, its method is when adjacent two horizontal lines of same polarity show same gray level brightness, according to the error voltage between these two horizontal lines, among a plurality of gray scale voltages, select one of them to compensate, and only article one horizontal line of same polarity is compensated.
An embodiment more of the present invention provides a kind of grayscale brightness compensation required error voltage decision procedure, its method is when many horizontal line place same polarities, article one, the voltage of the storage capacitors of pixel on horizontal line and all the other many horizontal lines, passed through identical horizontal line after the time, its voltage value difference.
Another embodiment of the present invention provides one to have the LCD of gray scale voltage compensation system, and this LCD includes a display panels, a bleeder circuit, a control signal generator, a plurality of multiplexer and a digital to analog converter.Many the horizontal lines that this display panels has many data lines and from top to bottom arranges in regular turn perpendicular to data line, each bar data line all has a plurality of pixels, each pixel corresponds to a GTG brightness again, each pixel also corresponds to a polar signal simultaneously, this bleeder circuit then is to be used for receiving and a plurality of gamma voltages being made dividing potential drop, and generation is corresponding to a plurality of gray scale voltages of each GTG brightness, this control signal generator then is coupled to data line, and produce control signal according to the polarity of data line, multiplexer then is respectively coupled to bleeder circuit and control signal generator, and according to the control signal that is received, among a plurality of gray scale voltages, select one of them usefulness by way of compensation, this digital to analog converter then is to be connected with multiplexer, so that receive the gray scale voltage that multiplexer is exported.
Another embodiment of the present invention provides a bleeder circuit, and this bleeder circuit is to be in series by a plurality of dividing potential drop assemblies, and each dividing potential drop assembly can be made up of a plurality of driving components or passive component.
An embodiment more of the present invention provides a bleeder circuit, and this bleeder circuit is to be in series by m * n dividing potential drop assembly for n gray scale voltage of the required generation of m GTG brightness, and each dividing potential drop assembly can be made up of a plurality of driving components or passive component.
Another embodiment of the present invention provides one to have the LCD of gray scale voltage compensation system, when the pairing pixel of GTG brightness of this LCD is positive polarity, the control signal generator just can be controlled each multiplexer, make each multiplexer to select a high gray voltage to export digital to analog converter to by in pairing a plurality of gray scale voltages to compensate.
Another embodiment of the present invention provides one to have the LCD of gray scale voltage compensation system, when the pairing pixel of GTG brightness of this LCD is negative polarity, the control signal generator just can be controlled each multiplexer, make each multiplexer to select a low gray scale voltage to export digital to analog converter to by in pairing a plurality of gray scale voltages to compensate.
An embodiment more of the present invention provides a liquid crystal display driving method that needs gray scale voltage compensation, and this driving method is a N line conversion driving method, i.e. N bar horizontal line reversal of poles once, and this N value is more than or equal to 2.
Description of drawings
Fig. 1 illustrates conventional liquid crystal source electrode drive circuit system architecture diagram;
The pixel capacitance that Fig. 2 illustrates LCD charges and discharge electrograph;
Fig. 3 illustrates the source electrode drive circuit system architecture diagram after the present invention improves;
Fig. 4 A illustrates the gamma resistance synoptic diagram of traditional source electrode drive circuit;
Fig. 4 B illustrates the gamma resistance realization figure after the improvement;
When Fig. 5 A illustrated place's positive polarity, the gray scale compensation circuit was realized figure;
When Fig. 5 B illustrated place's negative polarity, the gray scale compensation circuit was realized figure;
Fig. 6 A illustrates the place during positive polarity, the gray scale compensation circuit realization figure that joins with multiplexer;
Fig. 6 B illustrates the place during negative polarity, the gray scale compensation circuit realization figure that joins with multiplexer;
Fig. 7 display control circuit sequential chart.
Embodiment
The preferable feature of embodiment chosen of the present invention will explain with reference to graphic.Spirit of the present invention and scope are not limited to these embodiment of selected usefulness as an illustration.It should be noted that these graphicly should not be considered as any specific size or ratio.In scope of the present invention, hereinafter described any structure and material all can suitably be changed.
If traditional driving circuit is during collocation point transformation driving method, because adjacent two horizontal polarity all need be reversed, so though the charging/discharging voltage of all picture elements has an error voltage to exist, but when whole image shows same gray level, human eye and the difficult existence that finds error voltage from the shown result of display still can be seen clearly picture.
But on real the work, we do not need to accomplish the degree of point transformation, so the present invention is the N line conversion type of drive that adopts than power saving, and when adopting N line conversion type of drive, same polarity article one gray scale voltage value are done the method and the device of compensation.
Many the horizontal lines that display panels has many data lines and from top to bottom arranges in regular turn perpendicular to data line.Data line has a plurality of pixels, and wherein a corresponding GTG brightness of each pixel and a polar signal.When the driving circuit that N line conversion type of drive is arranged in pairs or groups traditional, because in the N bar horizontal line time, polarity just need be reversed once, and because of the characteristic of circuit causes adjacent two horizontal lines of same polarity to discharge and recharge the electric charge difference, therefore for N-Line Inversion driving method the time, the present invention adopts the mode of compensation article one horizontal line gray scale voltage value in the same polarity.
With reference to shown in Figure 3, be different from existing source electrode drive circuit system architecture diagram, source electrode drive circuit system architecture diagram of the present invention includes: latch unit 300, accurate device 302, gamma resistance 304, multiplexer 306, digital to analog converter 308 and the output buffer 310 of changing in position.Wherein numerical data writes in the latch unit 300, when latch unit 300 stores a horizontal image data, these data sync can be exported to the accurate device 302 that changes in position, the voltage quasi position that position accurate change device 302 will change digital image data exports digital to analog converter 308 again to, digital to analog converter receives digital image data and then exports the analog image data to output buffer 310, by output buffer 310 image data is write in the middle of the liquid crystal more at last, and output buffer 310 wherein is made up of single gain negative feedback operational amplifier.
Be different from the gamma resistance meaning diagrammatic sketch on the existing source electrode drive circuit, shown in Fig. 4 A, the present invention has improved the system architecture of conventional source driver, and the gamma resistance of each GTG is subdivided into n resistance again, when Fig. 4 B is n=2, the gamma resistance meaning diagrammatic sketch after the improvement.Comparison diagram 4A and Fig. 4 B as can be known, it is that R2 that the R1 of Fig. 4 A is equivalent to R1a+R1b, Fig. 4 A among Fig. 4 B is equivalent to the R2a+R2b among Fig. 4 B and the Rm of Fig. 4 A is equivalent to the Rma+Rmb among Fig. 4 B that its each other resistance closes.Wherein m can be arbitrary integer, but when the conversion of N line, sets m=2N-1 usually.In order to reach the purpose of compensation, Rma and Rmb are in order to make adjacent two the horizontal gray scale voltages of same polarity identical in the choice.
When Fig. 5 A is a kind of place positive polarity, the realization figure of LCD gray level compensating circuit.In article one horizontal line time of polarity control signal counter-rotating, the relative high voltage of control signal generator 500 control multiplexers, 502 outputs, the relatively low voltage of all the other horizontal line time control signal generator 500 control multiplexers, 502 outputs of same polarity.
When Fig. 5 B is a kind of place negative polarity, the realization figure of LCD gray level compensating circuit.In article one horizontal line time of polarity control signal counter-rotating, the relatively low voltage of control signal generator 510 control multiplexers, 512 outputs, the relative high voltage of all the other horizontal line time control signal generator 510 control multiplexers, 512 outputs of same polarity.
When under same polarity, showing same gray level brightness for two adjacent picture elements, the error voltage Ve that produces according to the difference of the stored electric charge of storage capacitors on the two adjacent picture elements selects suitable gray scale voltage Vm, and only does compensation at article one horizontal line of same polarity signal.Wherein error voltage Ve is in the par line write time, the voltage difference in the same polarity signal between article one horizontal line and all the other horizontal lines.As error voltage Ve during greater than the gray scale voltage difference of its adjacent second order, the horizontal gray scale voltage of article one in the time of then can selecting the dividing potential drop result of the gray scale voltage Vk on k rank to be used for compensating same polarity.During positive polarity, V (k+1)＜Vm+Ve＜Vk, Fig. 6 A are wherein a kind of gray scale compensation circuit realization figure that joins with multiplexer; During negative polarity, V (k+1)＜Vm-Ve＜Vk, Fig. 6 B are wherein a kind of gray scale compensation circuit realization figure that joins with multiplexer.
Each GTG brightness corresponds respectively to a multiplexer, selects one of them gray scale voltage as corresponding to a certain GTG brightness, so that export digital to analog converter to by multiplexer.Multiplexer is controlled by a control signal generator, and the sequential chart of its control signal so just can be chosen article one horizontal line of same polarity and do compensation as shown in Figure 7.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (22)
1. grayscale brightness compensation method, be applicable to a display panels, most bar horizontal lines that this display panels has most bar data lines and from top to bottom arranges in regular turn perpendicular to those data lines, each those data line all has most pixels, each those data line provides a signal to make each affiliated those pixel produce a corresponding GTG brightness, it is characterized in that this gray scale voltage compensation method comprises:
Generation is corresponding to most gray scale voltages of this GTG brightness; And
Receive a control signal and in those gray scale voltages, select one of them to compensate according to this control signal.
2. grayscale brightness compensation method as claimed in claim 1, it is characterized in that, when pairing this pixel of this GTG brightness is a positive polarity, each those pixel for the duration of charging deficiency provide this control signal, this control signal can be by in those gray scale voltages, select a high gray voltage to compensate, the size of bucking voltage is determined by an error voltage.
3. grayscale brightness compensation method as claimed in claim 1, it is characterized in that, when pairing this pixel of this GTG brightness is a negative polarity, each those pixel of deficiency provide this control signal for discharge time, this control signal is by in those gray scale voltages, select a low gray scale voltage to compensate, the size of bucking voltage is determined by an error voltage.
4. grayscale brightness compensation method as claimed in claim 1, it is characterized in that, when adjacent two horizontal lines of a same polarity show a same gray level brightness, according to these two horizontal error voltages, among those gray scale voltages, select one of them to compensate, and only article one horizontal line of this same polarity is compensated.
5. grayscale brightness compensation method as claimed in claim 4, it is characterized in that, when this same polarity of most bar horizontal lines place, this error voltage is those pixel storage capacitors on article one horizontal line and all the other those horizontal lines, the magnitude of voltage that is had respectively, passed through one of identical horizontal line after the time, one voltage value difference.
6. grayscale brightness compensation method as claimed in claim 1 is characterized in that, a driving method of this display panels that is suitable for is a N line conversion driving method, i.e. N bar horizontal line reversal of poles once, and this N value is more than or equal to 2.
7. grayscale brightness compensation device, be applicable to a display panels, most bar horizontal lines that this display panels has most bar data lines and from top to bottom arranges in regular turn perpendicular to those data lines, each those data line has most pixels, each those pixel corresponds to one of them of most GTG brightness again, each those pixel also corresponds to a polar signal, it is characterized in that, this gray scale voltage compensation system comprises:
One bleeder circuit is made dividing potential drop in order to receive to reach to most gamma voltages, and produces the most individual gray scale voltages corresponding to each those GTG brightness;
One control signal generator is coupled to those data lines, in order to produce a control signal according to one of those data lines polarity;
A most multiplexer are coupled to this bleeder circuit and this control signal generator, receive this control signal and select one of them to compensate in those gray scale voltages according to this control signal; And
One digital to analog converter is coupled to those multiplexers, in order to receive those gray scale voltages by those multiplexer outputs.
8. grayscale brightness compensation device as claimed in claim 4 is characterized in that, described this bleeder circuit is in series by most dividing potential drop assemblies, and each those dividing potential drop assembly is made up of most passive components.
9. grayscale brightness compensation device as claimed in claim 4 is characterized in that, described this bleeder circuit is in series by most dividing potential drop assemblies, and each those dividing potential drop assembly is made up of most driving components.
10. grayscale brightness compensation device as claimed in claim 7, it is characterized in that, for those gray scale voltages of one second quantity of the required generation of those GTG brightness of each first quantity is to be in series by most the dividing potential drop assemblies that this first quantity is multiplied by this second quantity, and each those dividing potential drop assembly is made up of most passive components.
11. grayscale brightness compensation device as claimed in claim 7, it is characterized in that, for those gray scale voltages of one second quantity of the required generation of those GTG brightness of each first quantity is to be in series by most the dividing potential drop assemblies that this first quantity is multiplied by this second quantity, and each those dividing potential drop assembly is made up of most driving components.
12. grayscale brightness compensation device as claimed in claim 7, it is characterized in that, when pairing this pixel of this GTG brightness is a positive polarity, this control signal generator is just controlled each those multiplexer, make each those multiplexer by among corresponding those gray scale voltages that receive, select a high gray voltage, and export this digital to analog converter to and compensate.
13. grayscale brightness compensation device as claimed in claim 7, it is characterized in that, when pairing this pixel of this GTG brightness is a negative polarity, this control signal generator is just controlled each those multiplexer, make each those multiplexer by among corresponding those gray scale voltages that receive, select a low gray scale voltage, and export this digital to analog converter to and compensate.
14. grayscale brightness compensation device as claimed in claim 7 is characterized in that, one of this display panels that is suitable for driving method is a N line conversion driving method, i.e. N bar horizontal line reversal of poles once, and this N value is more than or equal to 2.
15. a LCD has a gray scale voltage compensation system, it is characterized in that, comprising:
One display panels, most bar horizontal lines that this display panels has most bar data lines and from top to bottom arranges in regular turn perpendicular to those data lines, each those data line has most pixels, each those pixel corresponds to one of them of most GTG brightness again, and each those pixel also corresponds to a polar signal;
One bleeder circuit is made dividing potential drop in order to receive to reach to most gamma voltages, and produces the most individual gray scale voltages corresponding to each those GTG brightness;
One control signal generator is coupled to those data lines, in order to produce a control signal according to one of those data lines polarity;
A most multiplexer are coupled to this bleeder circuit and this control signal generator, receive this control signal and select one of them to compensate in those gray scale voltages according to this control signal; And
One digital to analog converter is coupled to those multiplexers, in order to receive those gray scale voltages by those multiplexer outputs.
16. LCD as claimed in claim 15 is characterized in that, described this bleeder circuit is in series by most dividing potential drop assemblies, and each those dividing potential drop assembly is made up of most passive components.
17. LCD as claimed in claim 15 is characterized in that, described this bleeder circuit is in series by most dividing potential drop assemblies, and each those dividing potential drop assembly is made up of most driving components.
18. LCD as claimed in claim 15, it is characterized in that, for those gray scale voltages of one of the required generation of those GTG brightness of each first quantity second quantity is to be in series by most the dividing potential drop assemblies that this first quantity is multiplied by this second quantity, and each those dividing potential drop assembly is made up of most passive components.
19. LCD as claimed in claim 15, it is characterized in that, for those gray scale voltages of one of the required generation of those GTG brightness of each first quantity second quantity is to be in series by most the dividing potential drop assemblies that this first quantity is multiplied by this second quantity, and each those dividing potential drop assembly is made up of most driving components.
20. LCD as claimed in claim 15, it is characterized in that, when pairing this pixel of this GTG brightness is a positive polarity, this control signal generator is just controlled each those multiplexer, make each those multiplexer by among corresponding those gray scale voltages that receive, select a high gray voltage, and export this digital to analog converter to and compensate.
21. LCD as claimed in claim 15, it is characterized in that, when pairing this pixel of this GTG brightness is a negative polarity, this control signal generator is just controlled each those multiplexer, make each those multiplexer by among corresponding those gray scale voltages that receive, select a low gray scale voltage, and export this digital to analog converter to and compensate.
22. LCD as claimed in claim 15 is characterized in that, described driving method is a N line conversion driving method, i.e. N bar horizontal line reversal of poles once, and this N value is more than or equal to 2.
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| CN 200510003899 CN1808551A (en) | 2005-01-20 | 2005-01-20 | Grayscale brightness compensation method and its apparatus |
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| CN 200510003899 CN1808551A (en) | 2005-01-20 | 2005-01-20 | Grayscale brightness compensation method and its apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231830B (en) * | 2007-01-26 | 2010-05-26 | 群康科技(深圳)有限公司 | Method for generating LCD device gamma correction table |
| CN101582242B (en) * | 2008-05-12 | 2011-03-16 | 联咏科技股份有限公司 | Data drive circuit used for liquid crystal display with low color bias |
| CN102024440A (en) * | 2011-01-13 | 2011-04-20 | 华映光电股份有限公司 | Method for compensating pixel voltage of display panel and framework |
| CN101174397B (en) * | 2006-11-02 | 2012-09-05 | 瑞萨电子株式会社 | Data driver and display device |
| CN105070262A (en) * | 2015-08-26 | 2015-11-18 | 深圳市华星光电技术有限公司 | Source drive circuit and liquid crystal display panel |
| CN107134248A (en) * | 2017-07-04 | 2017-09-05 | 京东方科技集团股份有限公司 | Source electrode drive circuit and its voltage control method of output signal, display device |
| TWI637370B (en) * | 2017-12-19 | 2018-10-01 | 奇景光電股份有限公司 | Display device and operation method thereof |
| US11798513B2 (en) | 2021-01-07 | 2023-10-24 | Samsung Electronics Co., Ltd. | Liquid crystal display device and method for driving the same |
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2005
- 2005-01-20 CN CN 200510003899 patent/CN1808551A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174397B (en) * | 2006-11-02 | 2012-09-05 | 瑞萨电子株式会社 | Data driver and display device |
| CN101231830B (en) * | 2007-01-26 | 2010-05-26 | 群康科技(深圳)有限公司 | Method for generating LCD device gamma correction table |
| CN101582242B (en) * | 2008-05-12 | 2011-03-16 | 联咏科技股份有限公司 | Data drive circuit used for liquid crystal display with low color bias |
| CN102024440A (en) * | 2011-01-13 | 2011-04-20 | 华映光电股份有限公司 | Method for compensating pixel voltage of display panel and framework |
| CN102024440B (en) * | 2011-01-13 | 2012-11-21 | 华映光电股份有限公司 | Method for compensating pixel voltage of display panel and framework |
| CN105070262A (en) * | 2015-08-26 | 2015-11-18 | 深圳市华星光电技术有限公司 | Source drive circuit and liquid crystal display panel |
| CN105070262B (en) * | 2015-08-26 | 2018-01-26 | 深圳市华星光电技术有限公司 | A kind of source electrode drive circuit and liquid crystal display panel |
| CN107134248A (en) * | 2017-07-04 | 2017-09-05 | 京东方科技集团股份有限公司 | Source electrode drive circuit and its voltage control method of output signal, display device |
| TWI637370B (en) * | 2017-12-19 | 2018-10-01 | 奇景光電股份有限公司 | Display device and operation method thereof |
| US11798513B2 (en) | 2021-01-07 | 2023-10-24 | Samsung Electronics Co., Ltd. | Liquid crystal display device and method for driving the same |
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