CN101661716A - Method and device for driving display - Google Patents

Method and device for driving display Download PDF

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Publication number
CN101661716A
CN101661716A CN200810146315A CN200810146315A CN101661716A CN 101661716 A CN101661716 A CN 101661716A CN 200810146315 A CN200810146315 A CN 200810146315A CN 200810146315 A CN200810146315 A CN 200810146315A CN 101661716 A CN101661716 A CN 101661716A
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gtg
display
signal
pairing
driving voltage
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CN101661716B (en
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黄贵伟
蔡乙诚
吕启铭
廖振伸
刘冠宏
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Chunghwa Picture Tubes Ltd
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Chunghwa Picture Tubes Ltd
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Abstract

The invention provides a method and a device for driving a display. The driving method comprises the following steps: setting a plurality of driving voltage values which correspond to a plurality of gray scales respectively, wherein the plurality of gray scales comprise a first gray scale and a second gray scale less than the first gray scale, and a first driving voltage value corresponding to thefirst gray scale is less than a second driving voltage value corresponding to the second gray scale; and controlling the display to only display the second gray scale. In such a way, the driving method in the invention can reduce the reaction time of the display (a liquid crystal display, for example).

Description

The driving method of display and drive unit
Technical field
The present invention relates to a kind of driving method and device of display, particularly relate to a kind of driving method and drive unit that reduces the reaction time of display.
Background technology
LCD (liquid crystal display, LCD) show image principle is to make the liquid crystal molecule of each pixel (pixel) change arrangement mode by adding driving voltage, and then the percent of pass of change polarized state of light and light, thereby present different brightness.Yet liquid crystal molecule is very slow for the reaction that adds driving voltage, and therefore compared to traditional cathode-ray tube (CRT) (cathode ray tube) display, the situation of image fog (image blur) can take place when showing animated image LCD.
Be head it off, generally all can use superpotential to drive the method for (overdrive).For instance, if wish to obtain the brightness of a GTG G1, formerly should apply one and add driving voltage V1 so that liquid crystal molecule rotates to the angle of θ 1, but in order to accelerate the reaction velocity of liquid crystal molecule, usually can give an overdrive voltage V2 bigger at the beginning and be used as the transient state driving voltage, and then the stable state driving voltage that gives V1 is to show this GTG than V1.In addition, along with the difference of liquid crystal molecule initial state, the overdrive voltage that should give also different.For example, when certain pixel will be when GTG G2 becomes GTG G1 the overdrive voltage V3 that should give just be different from when GTG G3 becomes GTG G1 the overdrive voltage V4 that should give.Therefore, manufacturer can set up suitable overdrive voltage for different gray scale variation in the built-in superpotential driving of display signal tables of data.
Please refer to Fig. 1, Figure 1 shows that a superpotential drives the signal tables of data.On behalf of manufacturer, the part of " 0 " can insert suitable superpotential to drive signal and come different gray scale variation is overdrived the superpotential driving signal that on behalf of institute, other numerals among the figure then to give among the figure.Yet, this table only can be overdrived at the variation of middle GTG, but the driving voltage that is converted to high gray (being 255 GTGs) by other GTGs in this figure has been maximal value, can't give higher overdrive voltage again, so can not reduce the reaction time by revising superpotential driving signal tables of data, therefore, the utmost point effect that needs a kind of method that high gray is also had to overdrive is to improve pixel by the gray scale variation of the last picture reaction time to the high gray of picture at present.
Summary of the invention
Therefore one of purpose of the present invention is to provide a kind of method and apparatus of driving display, the reaction time that can reduce display.
One embodiment of the invention provide a kind of method of driving display, this method includes: set a plurality of driving voltage values, it is corresponding a plurality of GTGs respectively, wherein these a plurality of GTGs include one first GTG with less than one second GTG of this first GTG, and pairing one first driving voltage value of this first GTG is less than pairing one second driving voltage value of this second GTG; And control this display and only show to this second GTG.
The present invention also provides a kind of drive unit of driving display accordingly when above-mentioned driving method is provided.This drive unit includes: a reference voltage generation module and a control module.This reference voltage generation module is set a plurality of driving voltage values, it is corresponding a plurality of GTGs respectively, wherein these a plurality of GTGs include one first GTG with less than one second GTG of this first GTG, and pairing one first driving voltage value of this first GTG is less than pairing one second driving voltage value of this second GTG.This control module is coupled to this reference voltage generation module and this display, is used for producing a controlling signal to this display and only shows to this second GTG to control this display.In a preferred embodiment, this reference voltage generation module is a gamma reference voltage generation module, and this control module is color tracking (color tracking) module.
Description of drawings
Figure 1 shows that a superpotential drives the signal tables of data.
Figure 2 shows that the function block schematic diagram of an embodiment of the drive unit of driving display of the present invention.
Figure 3 shows that the process flow diagram of the method for the driving display that one embodiment of the invention provide.
Fig. 4 is the operation chart that gamma reference voltage generation module change gamma reference voltage shown in Figure 2 is set.
Fig. 5 is the synoptic diagram of full-color image control module.
The reference numeral explanation
??120 The superpotential driver module ??130 The gamma reference voltage generation module
??140 Display panel ??150 Control module
??100 Drive unit ?500 Full-color image control module
??510 The virtual bit converting unit ?520 Shake/frame-rate conversion unit
??V IN The GTG signal ?S OD Superpotential drives signal
??S CT Controlling signal ?V IN 6 GTG signal
??V F GTG cutting signal ?V IN Signal
Embodiment
Please refer to Fig. 2, Figure 2 shows that the synoptic diagram of an embodiment of the drive unit of display of the present invention.In the present embodiment, display comprises display panel 140 (for example LCD) and drive unit 100, and drive unit 100 is used for driving display panel 140 show image pictures.As shown in the figure, drive unit 100 includes a superpotential driver module 120, a reference voltage generation module (for example the gamma reference voltage generation module 130) and a control module 150 (for example color tracing module), please note, only there be the element relevant to be shown among Fig. 2 with technology contents of the present invention, yet the present invention does not limit drive unit 100 and only includes element shown in Figure 2.In addition, in present embodiment, display panel 140 is a LCD, yet this for the example explanation, be not restrictive condition of the present invention, that is the display of any application Driving technique of the present invention all belongs to category of the present invention only.
The GTG signal V of input INBe one or eight signal, its GTG is 0~255 integer, can represent 256 different GTG signals.Superpotential driver module 120 is coupled to gamma reference voltage generation module 130, is used for producing a superpotential and drives signal S ODGive display panel 140 and carry out over-drive operation so that produce suitable overdrive voltage to gamma reference voltage generation module 130.Superpotential driver module 120 built-in superpotential as shown in Figure 1 drive the signal tables of data, therefore, and as the GTG signal V of input INThe GTG that is had fall within 0~253 between the time, just drive in the signal tables of data contained data according to superpotential and come output over-voltage to drive signal S via lookup table mode ODTo gamma reference voltage generation module 130 to produce desired overdrive voltage.In present embodiment, as the GTG signal V of input INThe GTG that is had is 254 or 255 o'clock, does not then drive the signal tables of data via superpotential and does not produce superpotential and drive signal S OD, but reach the effect of overdriving by the mode that changes the gamma reference voltage setting, after its adjustment process will be specified in.Gamma reference voltage generation module 130 is coupled to display panel 140, be used for producing a plurality of gamma reference voltages, and export it to display panel 140 with reference voltage as the subsequent drive liquid crystal molecule, and since produce via gamma reference voltage liquid crystal molecule driving voltage to be operating as industry known, so correlative detail is not just given unnecessary details in this in detail.Control module 150 is coupled to display panel 140, is used for controlling display panel 140 displayable grey-scale range (in the present embodiment, displayable grey-scale range is 0~254).At last, display panel 140 is that basis is from the gamma reference voltage of gamma reference voltage generation module 130 and the controlling signal S of control module 150 CTShow corresponding GTG signal.
As mentioned above, can't revise for fixing because superpotential drives in the signal tables of data part of high gray (being 255 in the present embodiment), thus the present invention just the adjustment by gamma reference voltage reach and apply the purpose of overdriving with fast reaction speed.Please refer to Fig. 3, Figure 3 shows that the method flow diagram of the driving display (for example LCD) that one embodiment of the invention provide.Please note, if can obtain identical result, the performed step of driving method of the present invention does not limit and must carry out in regular turn in accordance with order shown in Figure 3, that is, flow sequence shown in Figure 3 as the usefulness of example explanation, is not to be used as restrictive condition of the present invention only.In addition, under the situation that does not influence the technology of the present invention announcement, flow process shown in Figure 3 only demonstrates step related to the present invention.The running of driving method of the present invention can briefly be summarized as follows:
Step 310: control control module 150 only shows to second GTG display panel 140;
Step 320: (in the present embodiment with first GTG, it is high gray, that is 255) gamma reference voltage downgrades, second GTG (in the present embodiment, if control module 150 control display panels 140 only are shown to time high gray, then second GTG is 254) gamma reference voltage increase, make the corresponding gamma reference voltage of second GTG (lower GTG) greater than the gamma reference voltage of first GTG (higher GTG), make second GTG have the overdrive voltage of a transient state in this way; And
Step 330: after finishing over-drive operation, make the pairing gamma reference voltage of second GTG fall back original value again, to produce the driving voltage of stable state.
The technology of control is to be used for making the white point of display and colour temperature to fix originally, can also select the reach controlled by the change of input parameter, so the present invention utilizes promptly control module 150 to control display panel 140 displayable grey-scale range (step 310).In the present embodiment, control via control module 150, display panel 140 is the highest only to be shown to GTG 254 but not original default high gray 255, therefore when the GTG signal of input was GTG 255, actual displayed was the brightness of GTG 254 at last, changed speech, enabling under the control, 140 displayable grey-scale range of display panel become 0~254, at this moment, if GTG signal V INThe input GTG that is had is respectively 254 and 255, and then display panel 140 all shows according to the driving voltage of same GTG 254 pairing stable states at last.
In addition, as GTG signal V INThe input GTG that is had is 254 or 255 o'clock, and step 320 can change the setting of gamma reference voltage, so that have the effect of overdriving in the process of display panel 140 when showing high gray 254.See also Fig. 4, Fig. 4 is the operation chart that gamma reference voltage generation module 130 change gamma reference voltages shown in Figure 2 are set.The 130 inner meetings of gamma reference voltage generation module produce a plurality of voltage levels and define a plurality of gamma reference voltages, for instance, voltage level V1, V2, V17, the V18 that gamma reference voltage generation module 130 inside are produced is used for defining the gamma reference voltage VREF_254 and the VREF_255 of GTG 254 and GTG 255, wherein voltage level V1, V18 are defined as the gamma reference voltage VREF_255 of GTG 255, and voltage level V2, V17 then are defined as the gamma reference voltage VREF_254 of GTG 254.Before adjusting (that is step 320 is carried out preceding), voltage level V1, V2, V17, the V18 that gamma reference voltage generation module 130 inside are produced is respectively 14.613 volts, 13.298 volts, 1.842 volts, 0.541 volt (note that only using as the example explanation of these magnitudes of voltage); And in adjusting back (that is step 320 is carried out the back), voltage level V1, V2, V17, the V18 that gamma reference voltage generation module 130 inside are produced just becomes 13.298 volts, 14.618 volts, 0.541 volt, 1.842 volts.Therefore, the gamma reference voltage VREF_254 of GTG 254 just can equal GTG 255 pairing gamma reference voltage VREF_255 before adjusting after adjusting, therefore, when display panel 140 when showing high gray 254, owing to can use gamma reference voltage VREF_255 (greater than the pairing gamma reference voltage VREF_254 of GTG 254 before adjusting) to drive, thereby just can have the effect of overdriving.Afterwards, when step 330 is carried out, gamma reference voltage generation module 130 can be set by reduction gamma reference voltage originally, that is, voltage level V1, V2, V17, V18 return back to the magnitude of voltage before the adjustment shown in Figure 4, therefore, display panel 140 when showing high gray 254, the last driving voltage that still uses pairing gamma reference voltage VREF_254 before adjusting to be used as stable state.
As mentioned above, when control module 150 control display panel 140 is the highest when only being shown to GTG 254, if GTG signal V INThe input GTG that is had is 254 o'clock, and step 320 can be performed so that display panel 140 can have the effect of overdriving when showing high gray 254, yet, as the GTG signal V of input INWhen the GTG that is had fell within 0~253 grey-scale range, the overdrive voltage signal of its transient state still drove signal tables of data (as shown in Figure 1) with reference to superpotential.
Be noted that, in above embodiment, display panel 140 displayable grey-scale range are 0~254, yet, in another embodiment of the present invention, can be 255 mode of operation when being applied to the GTG signal and being 0 with above-mentioned GTG signal, that is when the GTG signal of input was 0, last actual displayed be the brightness of GTG 1, in other words, display panel 140 displayable grey-scale range are 1~254, at this moment, if GTG signal V INThe input GTG that is had is respectively 0 and 1, and then display panel 140 all shows according to the driving voltage of same GTG 1 pairing stable state at last.When being 0 and 1 as for the input GTG that has when the GTG signal, the operation of display panel 140 is similar when being 254 and 255 with the input GTG that has when the GTG signal, therefore repeats no more.
In addition, in the above embodiment of the present invention, no matter display frame is static or dynamic, display panel 140 all can show 256 GTG values (that is input GTG signal is one 8 signals), yet, in another embodiment of the present invention, can in drive unit shown in Figure 2 100, add and be coupled to overdrive voltage module 120 and GTG signal V INBetween a full-color image control module be used for driving the figure place of the GTG signal of display panel 140 with control.Fig. 5 is the synoptic diagram of full-color image control module 500.As shown in Figure 5, full-color image control module 500 includes a virtual bit converting unit 510 and a shake/frame-rate conversion unit 520, full-color image control module 500 is used for making when display frame is dynamic display frame, and virtual bit converting unit 510 is with 8 GTG signal V INTake out latter two position, and add that a virtual bit is to produce 3 GTG cutting signal V F, and according to 8 GTG signal V INPreceding 6 positions are to produce one 6 GTG signal V IN', and use 6 GTG signal V IN' and overdrive voltage module 120 drive display panel 140; And when display frame was static display frame, then shake/frame-rate conversion unit 520 was according to GTG cutting signal V FAnd 6 GTG signal V IN' to export the effect that 256 kinds of gray scale variation reach 16.7 hundred ten thousand looks.The running of driving method of the present invention can briefly be summarized as follows.
At first, when display frame was dynamic display frame, as mentioned above, virtual bit converting unit 510 produced 3 GTG cutting signal V FAnd 6 GTG signal V IN', and use 6 GTG signal V IN' and overdrive voltage module 120 drive display panel 140, afterwards, similar as Fig. 2 and embodiment shown in Figure 3, via the control of control module 150, display panel 140 shown grey-scale range are 1~62 (displayable grey-scale range is 0~63 originally), if 6 GTG signal V IN' the input GTG that had is 1 or 62 o'clock, display panel 140 can be according to the operation of above-mentioned relevant Fig. 2 and Fig. 3 so that display panel 140 has the effect of overdriving, yet, as 6 GTG signal V IN' when the GTG that had fell within 1~62 grey-scale range, the overdrive voltage signal of its transient state still reference class drove the signal tables of data like superpotential shown in Figure 1.For example, work as V INDuring for " 00000000 ", V IN' be " 000001 ".
When display frame was static display frame, then shake/frame-rate conversion unit 520 utilized 3 GTG cutting signal V FWith at 6 GTG signal V IN' in per two adjacent GTGs between insert 7 kinds of gray scale variation, with V of the present invention IN' GTG 1~62 that had, cooperate 3 GTG cutting signal V FDoing can have 489 kinds of GTGs (62*8-8+1) after the calculation, greater than 256 kinds of GTGs that 8 GTG signals are had, therefore can choose 256 kinds of GTGs to produce a signal V in 489 kinds of GTGs IN" driving display panel 140, and then reach the effect of 16.7 hundred ten thousand looks.
The invention has the advantages that, by the gamma reference voltage of adjusting first GTG and the gamma reference voltage of second GTG, the gamma reference voltage that makes script high gray (first GTG) is on the contrary less than low GTG (second GTG) gamma reference voltage, the mode of following the trail of by color only shows to second GTG display again, so can not increase under the condition of cost of any loop, there is a unnecessary GTG can do the operation of overdriving, thereby reduces the reaction time.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.

Claims (20)

1. the driving method of a display, it includes:
Set a plurality of driving voltage values, it is corresponding a plurality of GTGs respectively, wherein these a plurality of GTGs include one first GTG with less than one second GTG of this first GTG, and this first GTG corresponds to one first driving voltage value, this second GTG corresponds to one second driving voltage value; And
Controlling this display only shows to this second GTG.
2. driving method as claimed in claim 1, wherein control this display and only show to the step of this second GTG and include:
Carrying out a color follows the trail of operation and controls this display and only show to this second GTG.
3. driving method as claimed in claim 1, wherein this first GTG is high gray in these a plurality of GTGs.
4. driving method as claimed in claim 3, wherein this second GTG is high gray in these a plurality of GTGs.
5. driving method as claimed in claim 1, wherein these a plurality of driving voltage values are the gamma reference voltage value.
6. driving method as claimed in claim 1, wherein when the pairing GTG of a GTG signal equaled this first GTG or this second GTG, this driving method also included:
Drive this display according to this second driving voltage value and show this second GTG; And
In the one scan line opening time, pairing this second driving voltage value of this second GTG is set at this first driving voltage value, and drives this display according to this first driving voltage value and show this GTG signal.
7. driving method as claimed in claim 1, wherein this display is a LCD.
8. driving method as claimed in claim 1, wherein when the pairing GTG of a GTG signal equals this first GTG or this second GTG, pairing this first driving voltage value of this first GTG is less than pairing this second driving voltage value of this second GTG, and this display only shows to this second GTG; And when the pairing GTG of this GTG signal is not equal in this first GTG and this second GTG any, pairing this first driving voltage value of this first GTG is greater than pairing this second driving voltage value of this second GTG, and this display not only shows to this second GTG, and this driving method includes in addition: produce a superpotential according to this GTG signal and drive signal, and drive this display according to the driving voltage value to GTG that should superpotential driving signal in this a plurality of driving voltage values.
9. driving method as claimed in claim 1, wherein these a plurality of GTGs include one the 3rd GTG with less than one the 4th GTG of the 3rd GTG, the 4th GTG is a minimum gray scale in these a plurality of GTGs, the 3rd GTG is once low GTG in these a plurality of GTGs, and the 3rd GTG corresponds to one the 3rd driving voltage value, and the 4th GTG corresponds to the moving magnitude of voltage of a 4 wheel driven; And
Carrying out a color follows the trail of operation and controls this display and only show to the 3rd GTG.
10. driving method as claimed in claim 9, wherein when the pairing GTG of a GTG signal equals the 3rd GTG or the 4th GTG, the moving magnitude of voltage of pairing this 4 wheel driven of the 4th GTG is greater than pairing the 3rd driving voltage value of the 3rd GTG, and this display only shows to the 3rd GTG; And when the pairing GTG of this GTG signal is not equal in the 3rd GTG and the 4th GTG any, pairing the 3rd driving voltage value of the 3rd GTG is greater than the moving magnitude of voltage of pairing this 4 wheel driven of the 4th GTG, and this display not only shows to the 3rd GTG, and this driving method also includes: produce a superpotential according to this GTG signal and drive signal, and drive this display according to the driving voltage value to GTG that should superpotential driving signal in this a plurality of driving voltage values.
11. the drive unit of a display includes:
One reference voltage generation module, be used for setting a plurality of driving voltage values, it is corresponding a plurality of GTGs respectively, wherein these a plurality of GTGs include one first GTG with less than one second GTG of this first GTG, and this first GTG corresponds to one first driving voltage value, and this second GTG corresponds to one second driving voltage value; And
One control module is coupled to this reference voltage generation module and this display, is used for producing a controlling signal to this display and only shows to this second GTG to control this display.
12. drive unit as claimed in claim 11, wherein this control module is a color tracing module, and this controlling signal is a color Tracing Control signal.
13. drive unit as claimed in claim 11, wherein this first GTG is high gray in these a plurality of GTGs.
14. driving method as claimed in claim 13, wherein this second GTG is high gray in these a plurality of GTGs.
15. drive unit as claimed in claim 11, wherein this reference voltage generation module is a gamma reference voltage generation module, and these a plurality of driving voltage values are the gamma reference voltage value.
16. drive unit as claimed in claim 11, wherein when the pairing GTG of a GTG signal equals this first GTG or this second GTG, this reference voltage generation module drives this display according to this second driving voltage value earlier and shows this second GTG, then, in the one scan line opening time, pairing this second driving voltage value of this second GTG is set at this first driving voltage value, and drives this display according to this first driving voltage value.
17. drive unit as claimed in claim 11, wherein this display is a LCD.
18. drive unit as claimed in claim 11, it also includes:
One superpotential driver module is coupled to this reference voltage generation module;
Wherein when the pairing GTG of a GTG signal equals this first GTG or this second GTG, this reference voltage generation module is set pairing this first driving voltage value of this first GTG less than pairing this second driving voltage value of this second GTG, and this control module is controlled this display and only shown to this second GTG; And when the pairing GTG of this GTG signal is not equal in this first GTG and this second GTG any, this reference voltage generation module is set pairing this first driving voltage value of this first GTG greater than pairing this second driving voltage value of this second GTG, this control module is controlled this display and is not only shown to this second GTG, this superpotential driver module produces a superpotential according to this GTG signal and drives signal to this reference voltage generation module, and this this reference voltage generation module drives this display according to the driving voltage value to GTG that should superpotential driving signal in this a plurality of driving voltage values.
19. drive unit as claimed in claim 11, wherein these a plurality of GTGs include one the 3rd GTG with less than one the 4th GTG of the 3rd GTG, the 4th GTG is a minimum gray scale in these a plurality of GTGs, the 3rd GTG is once low GTG in these a plurality of GTGs, and the 3rd GTG corresponds to one the 3rd driving voltage value, and the 4th GTG corresponds to the moving magnitude of voltage of a 4 wheel driven; And this control module produces this controlling signal to this display and only shows to the 3rd GTG to control this display.
20. drive unit as claimed in claim 19, it also includes:
One superpotential driver module is coupled to this reference voltage generation module;
Wherein when the pairing GTG of a GTG signal equals the 3rd GTG or the 4th GTG, this reference voltage generation module is set the moving magnitude of voltage of pairing this 4 wheel driven of the 4th GTG greater than pairing the 3rd driving voltage value of the 3rd GTG, and this control module is controlled this display and only shown to the 3rd GTG; And when the pairing GTG of this GTG signal is not equal in the 3rd GTG and the 4th GTG any one, this reference voltage generation module is set pairing the 3rd driving voltage value of the 3rd GTG greater than the moving magnitude of voltage of pairing this 4 wheel driven of the 4th GTG, this control module is controlled this display and is not only shown to the 3rd GTG, this superpotential driver module produces a superpotential according to this GTG signal and drives signal to this reference voltage generation module, and this this reference voltage generation module drives this display according to the driving voltage value to GTG that should superpotential driving signal in this a plurality of driving voltage values.
CN2008101463151A 2008-08-25 2008-08-25 Method and device for driving display Expired - Fee Related CN101661716B (en)

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CN103474042A (en) * 2013-09-12 2013-12-25 青岛海信电器股份有限公司 Method, device and displaying device for overvoltage driving
CN108806637A (en) * 2017-05-05 2018-11-13 神讯电脑(昆山)有限公司 Display device and its display methods
CN109215594A (en) * 2018-10-09 2019-01-15 深圳市华星光电半导体显示技术有限公司 The driving device and driving method of liquid crystal display panel
CN111223460A (en) * 2020-01-14 2020-06-02 京东方科技集团股份有限公司 Pixel circuit, array substrate, panel, device and driving method

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JP5522334B2 (en) * 2006-03-14 2014-06-18 Nltテクノロジー株式会社 Liquid crystal driving method and liquid crystal driving device
CN101231399B (en) * 2007-01-22 2010-08-18 钰瀚科技股份有限公司 Method and apparatus for regulating liquid crystal extremely drive precision
CN101241690B (en) * 2007-02-08 2010-09-29 明基电通股份有限公司 Display for color tracking algorithm based on built-in optical feature value

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103474042A (en) * 2013-09-12 2013-12-25 青岛海信电器股份有限公司 Method, device and displaying device for overvoltage driving
CN103474042B (en) * 2013-09-12 2015-12-23 青岛海信电器股份有限公司 A kind of method of overvoltage drive, device and display device
CN108806637A (en) * 2017-05-05 2018-11-13 神讯电脑(昆山)有限公司 Display device and its display methods
CN109215594A (en) * 2018-10-09 2019-01-15 深圳市华星光电半导体显示技术有限公司 The driving device and driving method of liquid crystal display panel
CN111223460A (en) * 2020-01-14 2020-06-02 京东方科技集团股份有限公司 Pixel circuit, array substrate, panel, device and driving method

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