CN106023939B - Liquid Crystal Display And Method For Driving - Google Patents
Liquid Crystal Display And Method For Driving Download PDFInfo
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- CN106023939B CN106023939B CN201610614185.4A CN201610614185A CN106023939B CN 106023939 B CN106023939 B CN 106023939B CN 201610614185 A CN201610614185 A CN 201610614185A CN 106023939 B CN106023939 B CN 106023939B
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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
The present invention provides a kind of Liquid Crystal Display And Method For Driving, and the driving method of the liquid crystal display is the following steps are included: obtain the second data-signal of the second sub-pixel driven corresponding to the first data-signal of the first sub-pixel corresponding to current scan line and the preceding scan line of current scan line and with the first sub-pixel by same data line；Offset is determined according to the first data-signal and the second data-signal；The first data-signal is compensated using offset；The first sub-pixel is driven according to compensated first data-signal.The driving method of liquid crystal display provided by the invention promotes the quality of liquid crystal display due to the phenomenon that being equipped with offset, compensating using data-signal of the offset to each sub-pixel, cause color difference because of data-signal deformation so as to improve liquid crystal display.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of Liquid Crystal Display And Method For Drivings.
Background technique
In flat panel display technology field, three grid pixels (Tri-gate pixel) driving method is a pixel collocation one
Data line (data line) and three scan lines (scan line), one of pixel include three sub- pictures of red, green, blue
Element.The structure of three grid pixels is when grayscale is shown, the problem of deformation without data-signal, but in colour display, data-signal
High gray and the switching of low ash rank frequently, data-signal is easy to produce deformation and in turn results in luminance loss, to cause color difference existing
As.
Summary of the invention
The present invention provides a kind of Liquid Crystal Display And Method For Driving, is believed with solving liquid crystal display data in the prior art
Number high gray and the switching of low ash rank frequently, be easy to produce deformation and cause and then the technical issues of color difference phenomenon.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of drive of liquid crystal display is provided
Dynamic method, the driving method the following steps are included:
Before the first data-signal and the current scan line that obtain the first sub-pixel corresponding to current scan line
Second data-signal of the second sub-pixel driven corresponding to scan line and with first sub-pixel by same data line；
Offset is determined according to first data-signal and second data-signal；It is described according to first data-signal and institute
Stating the step of the second data-signal determines offset includes: the grayscale value for calculating first data-signal and second data
Grayscale difference between the grayscale value of signal；According to the grayscale difference and the corresponding color of first sub-pixel to determine
State offset；
First data-signal is compensated using the offset；
First sub-pixel is driven according to compensated first data-signal.
An embodiment according to the present invention, described the step of determining the offset according to the grayscale difference include:
The offset is determined by lookup table mode according to the grayscale difference.
An embodiment according to the present invention, each pixel of the liquid crystal display include along at least three of column direction arrangement
Primary color sub-pixels, wherein at least three primary color sub-pixels are driven by the same data line and correspond respectively to difference
The scan line.
Another technical solution used in the present invention is: providing a kind of liquid crystal display, the liquid crystal display includes control
Device and data driver processed, wherein the controller obtains the first data letter of the first sub-pixel corresponding to current scan line
Number and the preceding scan line of the current scan line corresponding to and driven by same data line with first sub-pixel
Second data-signal of the second sub-pixel, the controller calculate first data-signal grayscale value and second data
Grayscale difference between the grayscale value of signal, the controller is according to the grayscale difference and the correspondence of first sub-pixel
Color determines that offset, the controller further compensate first data-signal using the offset, institute
It states data driver and first sub-pixel is driven according to compensated first data-signal.
An embodiment according to the present invention, the liquid crystal display further comprise memory, and the memory is for storing
One compensation table, the controller table look-up by the compensation table according to the grayscale difference determines the offset.
An embodiment according to the present invention, each pixel of the liquid crystal display include along at least three of column direction arrangement
Primary color sub-pixels, wherein at least three primary color sub-pixels are driven by the same data line and correspond respectively to difference
The scan line.
The beneficial effects of the present invention are: being in contrast to the prior art, the driving of liquid crystal display provided by the invention
Method is compensated, so as to improve liquid crystal display due to being equipped with offset using data-signal of the offset to each sub-pixel
The phenomenon that device causes color difference because of data-signal deformation, promotes the quality of liquid crystal display.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the structural schematic diagram of three grid pixels in the prior art；
Fig. 2 is the data-signal of three grid dot structures before compensation and compensated signal waveform schematic diagram；
Fig. 3 is the color difference of three grid dot structures before compensation and compensated percentage curve schematic diagram；
Fig. 4 is the flow diagram of the driving method first embodiment of liquid crystal display provided by the invention；
Fig. 5 is the flow diagram of the driving method second embodiment of liquid crystal display provided by the invention；
Fig. 6 is the structural schematic diagram of one embodiment of liquid crystal display provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram of three grid pixels of the invention.
As shown in Figure 1, three grid pixels (Tri-gate pixel) driving method is the one data line of collocation of pixel 10
21 (data line) and three scan lines 22,23,24 (scan line).Wherein, pixel 10 include red sub-pixel 11,
13 3 green sub-pixels 12, blue subpixels primary color sub-pixels.In colour display application, there are gray-scale intensities for three grid pixels
With the difference of RGB pure color brightness, thus difference the phenomenon that causing is color difference, and color difference can be indicated with quantitative formula, i.e. Color
X-talk=(W-R-G-B+2D)/W*100%, wherein Color X-talk is pure for the gray-scale intensity and RGB of current display color
The difference percentage of colour brightness, W represent the gray-scale intensity of current display color, and R represents red gray-scale intensity, and G represents green
Gray-scale intensity, B represents the gray-scale intensity of blue, and D is the dark-state brightness of liquid crystal display, i.e., when R, G, B grayscale are all 0
Gray-scale intensity；Wherein, the a-quadrant of Fig. 2, the letter of Color X-talk percentage are seen in the sub-pixel luminence difference section in three grid pixels
Number curve is shown in the A ' curve of Fig. 3, wherein abscissa is current gray value, and ordinate is percentage.
Referring to Fig. 4, Fig. 4 is the driving method first embodiment of liquid crystal display provided by the invention, including following
Step:
S101: before the first data-signal and current scan line that obtain the first sub-pixel corresponding to current scan line
Second data-signal of the second sub-pixel driven corresponding to scan line and with the first sub-pixel by same data line.
S102: offset is determined according to the first data-signal and the second data-signal.
S103: the first data-signal is compensated using offset.
S104: the first sub-pixel is driven according to compensated first data-signal.
The driving method of liquid crystal display provided by the invention is due to being equipped with offset, using offset to each sub-pixel
Data-signal compensate, so as to improve liquid crystal display because data-signal deform due to cause color difference the phenomenon that, promoted liquid crystal
The quality of display.
Referring to Fig. 5, Fig. 5 is the driving method second embodiment of liquid crystal display provided by the invention, including following
Step:
S201: before the first data-signal and current scan line that obtain the first sub-pixel corresponding to current scan line
Second data-signal of the second sub-pixel driven corresponding to scan line and with the first sub-pixel by same data line.
In the present embodiment, each pixel of liquid crystal display includes at least three primary color sub-pixels along column direction arrangement,
Wherein at least three primary color sub-pixels are driven by same data line and correspond respectively to different scanning line.
In practical application, if the first data-signal of the first sub-pixel corresponding to current scan line is N, current scan line
Preceding scan line corresponding to and the second data-signal of the second sub-pixel for being driven with the first sub-pixel by same data line
For N-1.
S202: the grayscale difference between the grayscale value of the first data-signal and the grayscale value of the second data-signal is calculated.
Where it is assumed that the input grayscale value Gray (N) of the first data-signal N be 255 (8bit), the second of the second sub-pixel
The input grayscale value Gray (N-1) of data-signal N-1 is 0, the second data-signal N- of the first data-signal N and the second sub-pixel
1 grayscale difference Delta Gray is 255.
S203: offset is determined according to grayscale difference.
In the present embodiment, offset is determined by lookup table mode according to grayscale difference, i.e. offset can be according to grey scale
The correspondence table of value and offset determines, is shown in Table 1.
The correspondence table of table 1 grayscale difference and offset
S204: the first data-signal is compensated using offset.
As can be drawn from Table 1, the offset that grayscale difference Delta Gray is 255 is 12, and the first number is added in offset
It is believed that number grayscale value Gray (N) in, can obtain it is compensated be the first data-signal grayscale value Gray (N ') be 255+12,
In, the unit of offset and the unit of grayscale value are consistent.
In other embodiments, in order to which subtleer grayscale value adjusts, 255 grayscale (8bit) of input can be utilized FRC
(Frame Rate Control refers to the eye storage characteristic using human eye) is further partitioned into 1024 grayscale (10bit), that is,
The variation of each grayscale in 1024, equal to the variation of 1/4 grayscale of original 255 grayscale, on this basis, compensated is
The grayscale value Gray (N ') of one data-signal is 1024+12, and compensated first data-signal grayscale value Gray (N ') is more
Height can further improve the phenomenon that being easy to produce color difference caused by deformation because of data-signal.That is, according to the original bit of input signal
Number (bit) and output signal required bit number carry out grayscale conversion, then grayscale conversion after on the basis of utilize offset into
Row compensation.
S205: the first sub-pixel is driven according to compensated first data-signal.
Wherein, the B area of Fig. 2, compensated Color are seen in the sub-pixel luminence difference section in compensated three grid pixel
The function curve of X-talk percentage is shown in the B ' curve of Fig. 3, wherein abscissa is current gray value, and ordinate is percentage.
In the present embodiment, step S203 can be with specifically:
According to the grayscale value of grayscale difference and the first data-signal, the grayscale value of the second data-signal and the first sub- picture
At least one of corresponding color of element or combination are to determine offset.
Specifically, offset needs just to can determine that offset, offset are also by tabling look-up by data more than two
Mode determine.When grayscale difference Delta Gray is equal, when the grayscale value Gray (N) of the first data-signal is different value
When, offset may be the same or different；When the corresponding color difference of the first sub-pixel, offset can be identical, can also
With difference；In the present embodiment, with the grayscale value Gray (N) of the first data-signal be different value when, the correspondence face of the first sub-pixel
Colorimetric compensation value is different citings, is shown in Table 2.
2 first, second data-signal of table table corresponding with the offset of corresponding color
As can be drawn from Table 2, when grayscale difference Delta Gray is 100, the grayscale value Gray (N) of the first data-signal is
100, when the first sub-pixel is red, offset 10；When grayscale difference Delta Gray be 100, the ash of the first data-signal
Rank value Gray (N) is 150, when the first sub-pixel is red, offset 12；When grayscale difference Delta Gray is 100, first
The grayscale value Gray (N) of data-signal is 100, when the first sub-pixel is green, offset 9；Wherein, the unit of offset with
The unit of grayscale value is consistent.Therefore, offset needs the grayscale according to grayscale difference Delta Gray and the first data-signal
At least one of corresponding color of grayscale value Gray (N-1) and the first sub-pixel of value or the second data-signal or combination come
It determines.
In other embodiments, it can be set according to actual needs a penalty function, and by grayscale difference or grey scale
In the grayscale value of value and the first data-signal, the grayscale value of the second data-signal and the corresponding color of the first sub-pixel extremely
Few one or combination substitute into the penalty function to determine offset.
Determining offset through the above way, can more fine offset data signal, can not only further change
Kind the phenomenon that being easy to produce color difference caused by deformation because of data-signal, moreover it is possible to keep three grid pixel color difference Color X-talk after compensation
The smoothness properties of function.Wherein, compensation way provided by the invention is to compensate for all colours combination, and consider
The smoothness properties of parameters of display Gamma after compensation.
Wherein, the memory space of grayscale difference Delta Gray can be 8bit, 10bit, 12bit；First data-signal
Grayscale value Gray (N) and the second data-signal grayscale value Gray (N-1) memory space may be 8bit, 10bit,
12bit；The memory space of grayscale difference Delta Gray and the grayscale value Gray (N) of the first data-signal and the second data-signal
The memory space of grayscale value Gray (N-1) can be equal, can also be unequal.Under normal circumstances, grayscale difference Delta
Gray is bigger, and the offset given is bigger.
Fig. 6 is please referred to, Fig. 6 is the structural schematic diagram of one embodiment of liquid crystal display provided by the invention.
As shown in Fig. 6, which includes controller 110 and data driver 120.
Wherein, controller 110 obtains the first data-signal N of the first sub-pixel corresponding to current scan line and current
Second number of the second sub-pixel driven corresponding to the preceding scan line of scan line and with the first sub-pixel by same data line
It is believed that number N-1, and determine that offset, controller 110 further utilize compensation according to the first data-signal and the second data-signal
Value compensates the first data-signal N, and data driver 120 drives the first sub- picture according to compensated first data-signal N '
Element.
Wherein, each pixel of liquid crystal display 100 includes at least three primary color sub-pixels along column direction arrangement, wherein
At least three primary color sub-pixels are driven by same data line and correspond respectively to different scanning line.
Controller 110 calculates the grayscale value Gray (N) of the first data-signal and the grayscale value Gray (N- of the second data-signal
1) the grayscale difference Delta Gray between, and offset is determined according to grayscale difference Delta Gray.
Further, controller 110 is according to the grayscale difference Delta Gray and grayscale value Gray of the first data-signal
(N), at least one of corresponding color of the grayscale value Gray (N-1) of the second data-signal and the first sub-pixel or combination come
Determine offset.
In the present embodiment, liquid crystal display 100 further comprises memory 130, and memory 130 is for storing a compensation
Table, controller 110 table look-up by the compensation table that memory 130 stores according to grayscale difference Delta Gray determines compensation
Value.Wherein, compensation table includes the data of two column or two column or more.
In conclusion it should be readily apparent to one skilled in the art that the driving method of liquid crystal display provided by the invention due to
Equipped with offset, compensated using data-signal of the offset to each sub-pixel, so as to improve liquid crystal display because of data
Signal skew and the phenomenon that cause color difference, promote the quality of liquid crystal display.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of driving method of liquid crystal display, which is characterized in that the driving method the following steps are included:
It is swept before obtaining the first data-signal and the current scan line of the first sub-pixel corresponding to current scan line
The second data-signal of the second sub-pixel retouched corresponding to line and driven with first sub-pixel by same data line；
Offset is determined according to first data-signal and second data-signal；
Described the step of determining offset according to first data-signal and second data-signal includes:
Calculate the grayscale difference between the grayscale value of first data-signal and the grayscale value of second data-signal；
The offset is determined according to the grayscale difference and the corresponding color of first sub-pixel；
First data-signal is compensated using the offset；
First sub-pixel is driven according to compensated first data-signal.
2. driving method according to claim 1, which is characterized in that described to determine the compensation according to the grayscale difference
The step of value includes:
The offset is determined by lookup table mode according to the grayscale difference.
3. driving method according to claim 1, which is characterized in that each pixel of the liquid crystal display includes along column
At least three primary color sub-pixels of direction arrangement, wherein at least three primary color sub-pixels are driven by the same data line
It moves and corresponds respectively to the different scan lines.
4. a kind of liquid crystal display, which is characterized in that the liquid crystal display includes controller and data driver, wherein institute
Before stating the first data-signal and the current scan line that controller obtains the first sub-pixel corresponding to current scan line
Second data-signal of the second sub-pixel driven corresponding to scan line and with first sub-pixel by same data line,
The controller calculates the grey scale between the grayscale value of first data-signal and the grayscale value of second data-signal
Value, the controller determine offset, the control according to the grayscale difference and the corresponding color of first sub-pixel
Device processed further compensates first data-signal using the offset, and the data driver is according to compensated
First data-signal drives first sub-pixel.
5. liquid crystal display according to claim 4, which is characterized in that the liquid crystal display further comprises storage
Device, the memory are looked into according to the grayscale difference by the compensation table for storing a compensation table, the controller
Table determines the offset.
6. liquid crystal display according to claim 4, which is characterized in that each pixel of the liquid crystal display includes edge
At least three primary color sub-pixels of column direction arrangement, wherein at least three primary color sub-pixels are carried out by the same data line
It drives and corresponds respectively to the different scan lines.
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| CN106297644A (en) * | 2016-11-04 | 2017-01-04 | 京东方科技集团股份有限公司 | The drive circuit of a kind of display floater, its driving method and display device |
| CN108133692B (en) * | 2017-12-29 | 2020-11-03 | 深圳市华星光电技术有限公司 | Method and device for compensating and adjusting pixel data and liquid crystal display panel |
| CN108172183B (en) * | 2018-01-02 | 2020-06-02 | 京东方科技集团股份有限公司 | Pixel compensation method, pixel compensation device and display device |
| CN109686293B (en) * | 2019-01-28 | 2022-07-26 | 京东方科技集团股份有限公司 | Method for determining gray-scale compensation value, driving method and computer readable medium |
| CN109741701A (en) * | 2019-02-21 | 2019-05-10 | 武汉天马微电子有限公司 | Display panel and its driving method, display device |
| CN109903716B (en) * | 2019-04-10 | 2023-06-20 | 合肥京东方光电科技有限公司 | Pixel unit charging method and device and display device |
| CN111554242B (en) * | 2020-05-13 | 2021-03-23 | 深圳市华星光电半导体显示技术有限公司 | Display device and terminal |
| CN114333725B (en) * | 2020-08-09 | 2022-12-13 | 合肥奕斯伟集成电路有限公司 | Liquid crystal display, driving compensation method and driving compensation device thereof |
| CN112233603A (en) * | 2020-09-21 | 2021-01-15 | 福建华佳彩有限公司 | Panel loss compensation method |
| CN112581901B (en) * | 2020-12-31 | 2024-02-20 | 厦门天马微电子有限公司 | Display panel, display driving method thereof and electronic equipment |
| US20240071284A1 (en) * | 2021-06-29 | 2024-02-29 | Hefei Boe Joint Technology Co., Ltd. | Method for driving display panel, timing controller, display apparatus and method of calibrating a display apparatus |
| CN116343639A (en) * | 2023-03-27 | 2023-06-27 | 惠科股份有限公司 | Data compensation method of sub-pixel and display panel |
| CN117711349A (en) * | 2024-02-05 | 2024-03-15 | 惠科股份有限公司 | Display device, display driving method thereof and storage medium |
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