CN107221296B - Over-driving method, time schedule controller and display - Google Patents
Over-driving method, time schedule controller and display Download PDFInfo
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- CN107221296B CN107221296B CN201710550509.7A CN201710550509A CN107221296B CN 107221296 B CN107221296 B CN 107221296B CN 201710550509 A CN201710550509 A CN 201710550509A CN 107221296 B CN107221296 B CN 107221296B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 241001270131 Agaricus moelleri Species 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 46
- 230000000875 corresponding effect Effects 0.000 description 38
- 238000012545 processing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000013213 extrapolation Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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Abstract
An overdrive method, a time schedule controller and a display are provided. The overdrive method comprises the following steps: comparing the content of the current frame and the content of the next frame of the image to obtain the gray scale change of one pixel of the image; finding out a first overdrive gray scale corresponding to the gray scale change from a first overdrive gray scale comparison table, and finding out a second overdrive gray scale corresponding to the gray scale change from a second overdrive gray scale comparison table; and calculating a third overdrive gray scale corresponding to the current update rate by an interpolation method according to the first overdrive gray scale and the second overdrive gray scale to serve as a target overdrive gray scale of the pixel in the next picture. The invention also discloses a time schedule controller and a display.
Description
Technical Field
The present invention relates to the related art in the field of displays, and more particularly, to an overdrive method, a timing controller and a display.
Background
Because of the slow response time of liquid crystal, the image sticking occurs under dynamic image to cause the blurred image on visual sense, so the Over Drive (OD) technique is applied to the driving of liquid crystal to increase the liquid crystal cross-pressure to accelerate the response time and further reduce the dynamic image sticking. Conventionally, the overdrive technique selects the appropriate overdrive gray level according to an overdrive gray-Up Table (ODLUT) corresponding to a single Frame rate (Frame rate). Since the gray scale value is positively correlated to the liquid crystal cross-voltage, increasing the gray scale value means increasing the liquid crystal cross-voltage, and the response time of the liquid crystal can be further increased.
However, the conventional method only uses a few overdrive gray-scale look-up tables due to the limited hardware storage space, which leads to the display being prone to overdrive when the frame rate is continuously changed. On the other hand, if a large number of overdrive gray scale lookup tables are used to correspond to different frame update rates, the large number of overdrive gray scale lookup tables will consume hardware storage space and increase the number of logic gates of a Timing controller (Timing controller) to increase the cost.
Disclosure of Invention
The present invention provides an overdrive method, which can select proper overdrive gray scale intensity without a large number of overdrive gray scale comparison tables under the continuous variation of the frame update rate.
Another objective of the present invention is to provide a timing controller using the above-mentioned overdrive method.
It is another object of the present invention to provide a display device corresponding to the above-mentioned overdrive method.
In order to achieve the above object, the present invention provides an overdrive method suitable for a display. The overdrive method comprises the following steps: receiving an image; obtaining the current update rate of the image; comparing the content of the current frame and the content of the next frame of the image to obtain the gray scale change of one pixel of the image; finding out a first overdrive gray scale corresponding to the gray scale change from a first overdrive gray scale comparison table, and finding out a second overdrive gray scale corresponding to the gray scale change from a second overdrive gray scale comparison table, wherein the first overdrive gray scale comparison table is recorded under a first picture update rate, a plurality of overdrive gray scales corresponding to a plurality of gray scale changes, the second overdrive gray scale comparison table is recorded under a second picture update rate, a plurality of overdrive gray scales corresponding to a plurality of gray scale changes, and the first picture update rate and the second picture update rate are different from the current update rate; and calculating a third overdrive gray scale corresponding to the current update rate by an interpolation method according to the first overdrive gray scale and the second overdrive gray scale to serve as a target overdrive gray scale of the pixel in a next picture.
The invention also provides a time schedule controller which is suitable for the display. The timing controller comprises a data comparison unit and an overdrive gray scale calculation unit. The data comparison unit is used for comparing the content of the current picture and the content of the next picture of the image so as to obtain the gray scale change of one pixel of the image. The overdrive gray scale calculation unit is used for finding out a first overdrive gray scale corresponding to the gray scale change from the first overdrive gray scale comparison table, finding out a second overdrive gray scale corresponding to the gray scale change from the second overdrive gray scale comparison table, and calculating a third overdrive gray scale corresponding to the current update rate of the image by an interpolation method according to the first overdrive gray scale and the second overdrive gray scale so as to be used as a target overdrive gray scale of the pixel in the next picture. The first overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes under a first picture update rate, the second overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes under a second picture update rate, and the first picture update rate and the second picture update rate are different from the current update rate.
The invention also provides a display, which comprises a display panel, a data driving unit and a time schedule controller. The display panel has a pixel. The data driving unit is electrically coupled to the pixels. The time schedule controller is used for providing different overdrive voltages for the pixels through the data driving unit under different frame update rates, wherein the provided overdrive voltages and the frame update rates are in a linear relation.
The invention has the technical effects that:
because the invention calculates the overdrive gray scale corresponding to the current update rate by using an interpolation method according to the first overdrive gray scale corresponding to the first frame update rate and the second overdrive gray scale corresponding to the second frame update rate, the invention only needs two overdrive gray scale comparison tables corresponding to two different frame update rates under the best condition, thereby not only selecting proper overdrive gray scale intensity under the continuous change of the frame update rate, but also achieving the effect of saving hardware cost.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a graph showing the relationship between the variation of the liquid crystal voltage and the liquid crystal rotation rate;
FIG. 2 is a graph showing the relationship between the liquid crystal voltage and the liquid crystal response time;
FIG. 3 is a diagram illustrating one of the linear interpolation operations for overdrive gray levels;
FIG. 4 is a diagram illustrating another linear interpolation operation for overdrive gray levels;
FIG. 5 is another graph showing the relationship between the liquid crystal voltage and the liquid crystal response time;
FIG. 6 is a flow chart of an overdrive method according to an embodiment of the invention;
fig. 7 is a block diagram of an internal circuit of a timing controller according to an embodiment of the invention.
Wherein the reference numerals
S61-S65: step (ii) of
10: time sequence controller
11: data input processing unit
12: frame buffer
13: data comparison unit
14: update rate detection unit
15: overdrive gray scale calculation unit
16: overdrive processing unit
17: output processing unit
In: image forming method
Out: output of
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
FIG. 1 is a graph showing the relationship between the variation of the liquid crystal voltage and the liquid crystal rotation rate. As shown in fig. 1, the horizontal axis of fig. 1 indicates the variation of the liquid crystal cross voltage in percentage, and the vertical axis indicates the liquid crystal rotation Rate (skew Rate). The liquid crystal rotation rate is the pixel brightness variation/liquid crystal response time, wherein the unit of the liquid crystal response time is millisecond (ms). In addition, point P1 in fig. 1 represents the gray scale change from the gray scale value L64 to the gray scale value L96, point P2 represents the gray scale change from the gray scale value L64 to the gray scale value L128, point P3 represents the gray scale change from the gray scale value L64 to the gray scale value L160, point P4 represents the gray scale change from the gray scale value L64 to the gray scale value L192, point P5 represents the gray scale change from the gray scale value L64 to the gray scale value L224, and point P6 represents the gray scale change from the gray scale value L64 to the gray scale value L255. As is clear from fig. 1, since the liquid crystal has a characteristic of a slow response speed, there is a relationship of a gradual change between the change amount of the liquid crystal cross pressure and the liquid crystal rotation rate. As can be seen from fig. 1, a straight line can be seen between the point P1 and the point P2, and a straight line can also be seen between the point P2 and the point P3, between the point P3 and the point P4, between the point P4 and the point P5, and between the point P5 and the point P6. That is, between any two points, the change amount of the liquid crystal cross voltage and the change of the liquid crystal rotation rate are in a linear relationship. The values of the change in the liquid crystal cross-pressure and the liquid crystal rotation rate at points P1, P2, P3, P4, P5 and P6 in FIG. 1 can be measured.
Fig. 2 is a graph showing the relationship between the liquid crystal voltage and the liquid crystal response time, please refer to fig. 1 and fig. 2. As can be seen from fig. 1, if the variation of the liquid crystal cross-voltage is within a certain range, the linear relationship between the variation of the liquid crystal cross-voltage and the liquid crystal rotation rate will be shown. This means that in the linear range, the liquid crystal rotation rate increases with increasing liquid crystal cross-voltage. From the above results, it can be seen that in fig. 2, when the variation of the liquid crystal cross voltage is increased from D to a, the liquid crystal rotation rate is also increased from D 'to a'. Therefore, if the variation of the liquid crystal cross-voltage is A when the frame rate is 120Hz, the liquid crystal can be promoted from the initial gray level LS to the target gray level LT within the time period from (t2-t1), and the liquid crystal rotation rate is A'. If the liquid crystal cross-voltage variation is D when the frame rate is 60Hz, the liquid crystal can be increased from the initial gray level LS to the target gray level LT within the time interval (t3-t1), and the liquid crystal rotation rate is D'. If the above 120Hz and 60Hz are respectively the upper limit frame rate and the lower limit frame rate supported by the display, the overdrive gray scale required for increasing the starting gray scale LS to the target gray scale LT can be found from the two overdrive gray scale comparison tables corresponding to the two frame rates, and then the overdrive gray scale required for the current frame rate can be calculated by interpolation according to the two overdrive gray scales found, so as to be used as the target overdrive gray scale of the corresponding pixel in the next frame. Further explanation is provided with reference to fig. 3.
FIG. 3 is a diagram illustrating the linear interpolation operation of the overdrive gray levels, please refer to FIG. 3. For example, if a pixel is to be promoted from the gray level value L64 to the gray level value L160, the overdrive gray level comparison table corresponding to the lower limit frame rate of 60Hz is checked to show that the overdrive gray level required by the pixel is the gray level value L164, and the overdrive gray level comparison table corresponding to the upper limit frame rate of 120Hz is checked to show that the overdrive gray level required by the pixel is the gray level value L183, then when the frame rate is changed to the current frame rate of 100Hz, the overdrive gray level required by the pixel at the current frame rate of 100Hz can be obtained by interpolation. The interpolation method has two calculation formulas for calculation, and the user can select one of the calculation formulas as follows:
wherein Y is the size of the overdrive gray level required at the current refresh rate, ODFR1For the magnitude of the overdrive gray level required at the first frame rate (in this case, the lower frame rate), X is the current rate, FR1 is the first frame rate (in this case, the lower frame rate is 60Hz), Δ OD is the difference between the overdrive gray levels required at the first frame rate and the second frame rate, Δ FR is the difference between the first frame rate and the second frame rate, OD is the difference between the first frame rate and the second frame rateFR2For the magnitude of the overdrive gray level required at the second frame rate (in this case, the upper frame rate), FR2 is the second frame rate (in this case, the upper frame rate is 120 Hz).
Although the above description is provided by taking the gray scale value of the pixel as an example, this is not intended to limit the present invention, and the interpolation method can be applied when the gray scale value of the pixel is adjusted down, as shown in fig. 4, fig. 4 is used to describe the linear interpolation operation of the overdrive gray scale in this case. Since the linear interpolation operation of fig. 4 is similar to the linear interpolation operation shown in fig. 3, it is not repeated here. Of course, in addition to the interpolation method, the extrapolation method can also be used to calculate the required overdrive gray level. Taking fig. 3 as an example, the display can look up a table to obtain two overdrive gray levels required at the frame update rates of 60Hz and 80Hz, and then calculate the overdrive gray level required at the current update rate of 100Hz by using an extrapolation method. In this case, the first frame rate may be one of a lower limit frame rate and an upper limit frame rate supported by the display, and the second frame rate is between the lower limit frame rate and the upper limit frame rate.
In addition, if the image has high resolution (PPI) and high update rate, and the blurred edge width is small, so that the human eye is not easy to detect the overdrive phenomenon, the overdrive phenomenon can be properly allowed, and the elimination of the dynamic ghost can obtain a good effect. In this case, interpolation or extrapolation can be performed to obtain the required overdrive gray scale with reference to the relationship curve shown in fig. 5, and fig. 5 is another relationship curve of the liquid crystal voltage and the liquid crystal response time.
Based on the above teachings, one skilled in the art can generalize some basic operation steps of the overdrive method, as shown in fig. 6. FIG. 6 is a flowchart illustrating an overdriving method according to an embodiment of the present invention. Referring to fig. 6, the overdrive method includes the following steps: receiving an image (as shown in step S61); obtaining a current update rate of the image (as shown in step S62), wherein the current update rate of the image can be obtained by providing relevant parameters by the system or by calculating an interval between previous and next frames; comparing the content of the current frame with the content of the next frame to obtain the gray level variation of one pixel of the image (as shown in step S63); finding out a first overdrive gray scale corresponding to the gray scale change from a first overdrive gray scale comparison table, and finding out a second overdrive gray scale corresponding to the gray scale change from a second overdrive gray scale comparison table (as shown in step S64), wherein the first overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes at a first frame update rate, the second overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes at a second frame update rate, and both the first frame update rate and the second frame update rate are different from the current frame update rate; and calculating a third overdrive gray level corresponding to the current update rate by interpolation according to the first overdrive gray level and the second overdrive gray level, so as to be used as a target overdrive gray level of the pixel in the next frame (as shown in step S65).
Fig. 7 is a block diagram of an internal circuit of a timing controller according to an embodiment of the invention, wherein the timing controller is suitable for a display. As shown in fig. 7, the timing controller 10 includes a data input processing unit 11, a frame buffer (frame buffer)12, a data comparing unit 13, an update rate detecting unit 14, an overdrive gray-scale calculating unit 15, an overdrive processing unit 16, and an output processing unit 17. The data input processing unit 11 is used for receiving the image In and transmitting the processed image In to the update rate detecting unit 14, the frame buffer 12, the data comparing unit 13 and the overdrive processing unit 16. The frame buffer 12 is used for storing the current frame of the image In and providing the stored frame to the data comparison unit 13, so that the data comparison unit 13 can compare the content of the current frame of the image In with the content of the next frame of the image In, thereby obtaining the gray scale change of one pixel of the image. The refresh rate detecting unit 14 is used for receiving the parameters related to the current refresh rate provided by the data input processing unit 11 or calculating the current refresh rate according to the interval time of the previous and subsequent frames.
The overdrive gray scale calculating unit 15 is configured to receive the current update rate of the image In obtained by the update rate detecting unit 14 and the gray scale change of the pixel obtained by the data comparing unit 13, find out a first overdrive gray scale corresponding to the gray scale change from the first overdrive gray scale comparison table, find out a second overdrive gray scale corresponding to the gray scale change from the second overdrive gray scale comparison table, further calculate a third overdrive gray scale corresponding to the current update rate of the image by interpolation according to the first overdrive gray scale and the second overdrive gray scale, and transmit a value of the calculated target overdrive gray scale to the overdrive processing unit 16. The overdrive processing unit 16 sets the overdrive gray level of the pixel for the image In transmitted from the data input processing unit 11 according to the received value of the target overdrive gray level, and then the overdrive gray level is processed by the output processing unit 17 to be used as the output of the timing controller 10. Thus, the data driving unit (not shown) can generate the overdrive voltage with the corresponding magnitude according to the related information about the overdrive gray scale magnitude required by the pixel, which is output by the timing controller 10, and provide the generated overdrive voltage to the pixel, so that the pixel has the corresponding liquid crystal cross voltage. The first overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes at a first frame update rate, the second overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes at a second frame update rate, and the first frame update rate and the second frame update rate are different from the current frame update rate. Of course, the overdrive gray level calculating unit 15 may also use three overdrive gray level mapping tables corresponding to three different frame update rates, for example, corresponding to the upper frame update rate, the lower frame update rate and a frame update rate between the two frame update rates, to calculate the overdrive gray level required at the current frame update rate, so as to achieve a more accurate effect.
In addition, according to the above teachings, the present invention also provides a display, which mainly includes a display panel (not shown), a data driving unit (not shown) and the aforementioned timing controller 10. The display panel has a pixel, and the data driving unit is electrically coupled to the pixel. The timing controller 10 is configured to provide different overdrive voltages for the pixels through the data driving unit at different frame rates, wherein the overdrive voltages are linearly related to the frame rate.
In summary, based on the linear relationship between the liquid crystal cross-voltage variation and the liquid crystal rotation rate, the present invention can calculate the overdrive gray scale corresponding to the current frame rate by using an interpolation method according to the first overdrive gray scale corresponding to the first frame rate and the second overdrive gray scale corresponding to the second frame rate, so that the present invention only needs two overdrive gray scale comparison tables corresponding to two different frame rates under the best condition, and thus, the proper overdrive gray scale strength can be selected under the condition of continuous variation of the frame rate, and the effect of saving hardware cost can be achieved.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. An overdrive method for a display, the overdrive method comprising:
receiving an image;
obtaining a current update rate of the image;
comparing the content of a current picture and the content of a next picture of the image to obtain a gray scale change of one pixel of the image;
finding out a first overdrive gray scale corresponding to the gray scale change from a first overdrive gray scale comparison table, and finding out a second overdrive gray scale corresponding to the gray scale change from a second overdrive gray scale comparison table, wherein the first overdrive gray scale comparison table is recorded under a first picture update rate, a plurality of overdrive gray scales corresponding to a plurality of gray scale changes, the second overdrive gray scale comparison table is recorded under a second picture update rate, a plurality of overdrive gray scales corresponding to a plurality of gray scale changes, and both the first picture update rate and the second picture update rate are different from the current update rate; and
and calculating a third overdrive gray scale corresponding to the current update rate by an interpolation method according to the first overdrive gray scale and the second overdrive gray scale to serve as a target overdrive gray scale of the pixel in the next picture.
2. The method as claimed in claim 1, wherein the first frame rate and the second frame rate are a lower limit frame rate and an upper limit frame rate respectively supported by the display.
3. The method as claimed in claim 1, wherein the first frame rate is one of a lower frame rate and an upper frame rate supported by the display, and the second frame rate is between the lower frame rate and the upper frame rate.
4. A timing controller for a display, the timing controller comprising:
a data comparing unit for comparing the content of a current frame and a next frame of an image to obtain a gray scale change of one pixel of the image; and
an overdrive gray scale calculation unit, for finding out a first overdrive gray scale corresponding to the gray scale change from a first overdrive gray scale comparison table, and finding out a second overdrive gray scale corresponding to the gray scale change from a second overdrive gray scale comparison table, and further calculating a third overdrive gray scale corresponding to a current update rate of the image by an interpolation method according to the first overdrive gray scale and the second overdrive gray scale, so as to be used as a target overdrive gray scale of the pixel in a next frame;
the first overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes under a first picture update rate, the second overdrive gray scale comparison table records a plurality of overdrive gray scales corresponding to a plurality of gray scale changes under a second picture update rate, and both the first picture update rate and the second picture update rate are different from the current update rate.
5. The timing controller of claim 4, wherein the first frame rate and the second frame rate are a lower limit frame rate and an upper limit frame rate supported by the display, respectively.
6. The timing controller as claimed in claim 4, wherein the first frame rate is one of a lower frame rate and an upper frame rate supported by the display, and the second frame rate is between the lower frame rate and the upper frame rate.
7. A display, comprising:
a display panel having a pixel;
a data driving unit electrically coupled to the pixel; and
a timing controller as claimed in any one of the preceding claims 4 to 6, for providing different overdrive voltages for the pixel through the data driving unit at different frame update rates, wherein the overdrive voltages provided are in a linear relationship with the frame update rate.
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| Application Number | Priority Date | Filing Date | Title |
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| TW106111534A TWI616858B (en) | 2017-04-06 | 2017-04-06 | Method for overdriving, timing controller and display |
| TW106111534 | 2017-04-06 |
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| CN110299115B (en) * | 2018-03-23 | 2022-01-18 | 奇景光电股份有限公司 | Overdrive method and time sequence controller |
| CN108806623B (en) * | 2018-04-25 | 2021-09-10 | 南京京东方显示技术有限公司 | Overvoltage compensation device and method and overvoltage compensation display device and method |
| CN108877714A (en) * | 2018-07-19 | 2018-11-23 | 深圳市华星光电技术有限公司 | Liquid crystal display and its over-driving method, memory |
| CN108986762B (en) * | 2018-09-11 | 2021-09-14 | 惠科股份有限公司 | Display device and voltage adjusting method thereof |
| 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 |
| CN112017604B (en) * | 2019-05-31 | 2022-07-08 | 京东方科技集团股份有限公司 | Driving method, driving device, display device and computer readable storage medium |
| CN111028761B (en) * | 2019-12-31 | 2021-09-03 | Tcl华星光电技术有限公司 | Display device and overdrive method thereof |
| US11195485B1 (en) * | 2020-10-28 | 2021-12-07 | Himax Technologies Limited | Method of driving liquid crystal display and display device utilizing same |
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| CN101577095B (en) * | 2008-05-07 | 2012-06-13 | 群康科技(深圳)有限公司 | Liquid crystal display and driving method thereof |
| CN102136237B (en) * | 2010-01-26 | 2013-05-08 | 奇美电子股份有限公司 | Display, time sequence controller and multilevel over driving method |
| US8773451B2 (en) * | 2011-05-03 | 2014-07-08 | Apple Inc. | Color correction method and apparatus for displays |
| CN102290036B (en) * | 2011-08-19 | 2013-01-23 | 深圳市华星光电技术有限公司 | Liquid crystal display driving method and liquid crystal display |
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