CN106251822A - A kind of colour cast control method of liquid crystal display - Google Patents
A kind of colour cast control method of liquid crystal display Download PDFInfo
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- CN106251822A CN106251822A CN201610856856.8A CN201610856856A CN106251822A CN 106251822 A CN106251822 A CN 106251822A CN 201610856856 A CN201610856856 A CN 201610856856A CN 106251822 A CN106251822 A CN 106251822A
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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
- G09G3/3611—Control of matrices with row and column drivers
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention proposes the colour cast control method of a kind of liquid crystal display, liquid crystal display is provided with display floater and timing controller, color compensation table it is provided with in timing controller, by display panels being divided into several regions, each region correspondence is positioned at a color compensation table of timing controller, and the centre position whether being in display floater according to beholder selects display floater carries out subregion color compensation or overall color compensation.The method of the present invention uses subregion color compensation and overall color to compensate and combines, achieve in the case of facing and looking side ways, use different color compensation methods, and use different color compensating parameter in zones of different in the case of stravismus, the problem improving big visual angle colour cast, and using intelligent-induction module, it is achieved color compensation automatically selects.
Description
Technical field
The invention belongs to field of liquid crystal display, the colour cast control method of a kind of liquid crystal display.
Background technology
The advantages such as liquid crystal display (Liquid crystal display, LCD) is light with it, thin are increasingly becoming development the most
One of flat faced display rapidly.Along with the development of technology, the size of present TV panel is done bigger and bigger, and resolution is increasingly
Greatly.Along with the increase of size, inevitably produce some problems.
During it is known that client observes in the center of liquid crystal display, the color of picture is normal, but stravismus
Time can find that liquid crystal display has the existence of colour cast (color washout) problem；People are it is also noted that work as chaotropic simultaneously
Crystal display closer to or time the size of liquid crystal display is bigger, color offset phenomenon is more serious.
Existing liquid crystal display mostly with light emitting diode (light-emitting diode, LED) as backlight.
Due in the white light that sends from LED, HONGGUANG, green glow, blue light wavelengths characteristic inconsistent, therefore when light source fails, HONGGUANG,
Green glow, blue light recession level different, thus cause in the case of big visual angle, the existence of color offset phenomenon.
Existing frequently-used solution is liquid crystal display to be carried out color compensating, as it is shown in figure 1, liquid crystal display is provided with
Time schedule controller 10 and multiple source electrode driver (Source IC) 3.Time schedule controller 10 include clock signal device 1 and
The timing controller (T-con IC) 2 being connected with this clock signal device 1.
Clock signal driver 1 sequentially produces R signal, G-signal, B signal through timing controller (T-con) 2 transmission extremely
Source electrode driver (Source IC) 3, the R signal accepted, G-signal, B signal are exported extremely by source electrode driver (Source IC) 3
Source electrode line.
As in figure 2 it is shown, be provided with color compensation table (Color Table) 21 in timing controller (T-con IC) 2, when three
After primary color data R, G, B are input to timing controller 2, search color compensation table 21 according to its gray level and carry out one accordingly
Color compensation, R, G, B through timing controller 2 input (Rx) to timing controller 2 outfan (Tx) process after,
It is input to source electrode driver (Source IC) 3, thus reduces color offset phenomenon, it is ensured that the homogeneity of display.
The operation principle of color compensation table is as in figure 2 it is shown, color compensation table 21 is mended by gray level (0～255) and rgb color
Repay parameter to constitute.According to different gray levels, set the parameter that corresponding rgb color compensates.R, G, B are input to sequencing contro core
After sheet, color compensation table is searched corresponding gray level it is carried out color compensation, be then input to by source electrode driver
On panel.
Existing color compensation scheme is to set color compensation table in timing controller to compensate, and color compensation table is to liquid crystal
The color compensation of display is overall, i.e. its compensating parameter of liquid crystal display different blocks is consistent.In the case of facing,
Do not have color offset phenomenon, but under big visual angle, owing to it compensates consistent, in such cases, colour cast problem will be there is.
Summary of the invention
Technical problem solved by the invention is to provide the colour cast control method of a kind of liquid crystal display, by by liquid crystal
Display floater is divided into several regions, and each region correspondence is positioned at a color compensation table of timing controller, according to sight
Whether the person of seeing is in the centre position of display floater selects display floater carries out subregion color compensation or overall color benefit
Repay.Use in zones of different in the case of realizing using different color compensation methods, and stravismus in the case of facing and looking side ways
Different color compensating parameter, the problem improving big visual angle colour cast.
The technical solution realizing the object of the invention is:
A kind of colour cast control method of liquid crystal display, liquid crystal display is provided with display floater and timing controller, time
It is provided with color compensation table in sequence control chip, comprises the following steps:
The first step: the display floater of liquid crystal display is divided into several regions, each region correspondence is positioned at sequencing contro
One color compensation table of chip；
Second step: in R signal, G-signal, B signal input to timing controller；
3rd step: whether intelligent-induction module detecting beholder is positioned at the centre position of display floater, the most then go to the
Four steps；Otherwise go to the 5th step；
4th step: subregion color compensation opened by color compensation table: show the aobvious of place according to R signal, G-signal, B signal
Showing each regional location of panel, each region of display floater is carried out point by color compensation table respectively according to corresponding color compensation table
Regional color compensates, and forwards the 6th step to；
5th step: subregion color compensation closed by color compensation table, uses the color compensation table that display panels is overall
Display floater is carried out overall color compensation, forwards the 6th step to；
6th step: after selecting, calculating and revise, transmit data to display floater and show.
Further, the colour cast control method of the liquid crystal display of the present invention, described region according to display floater vertical in
Heart line is symmetrical.
Further, the colour cast control method of the liquid crystal display of the present invention, the number in described region is 2n-1, and n is
Color compensation table number, should include in (2n-1) individual region: be positioned at the first area in the middle of display floater, to be positioned at first area each
2n region of side, this 2n region is all symmetrical arranged with this first area.
Further, the colour cast control method of the liquid crystal display of the present invention, display floater is divided into 5 regions, is respectively as follows:
Be positioned at the first area in the middle of display floater, be positioned at the second first area of this side, first area, to be positioned at this first area another
Second second area of side, it is positioned at the 3rd first area of this side, the second first area and is positioned at the second second area
3rd second area of side, wherein, the second first area and the second second area are oppositely arranged, the 3rd first area and the 3rd
Second area is oppositely arranged.
Further, the colour cast control method of the liquid crystal display of the present invention, described intelligent-induction module is arranged at display
The middle upper portion of panel.
Further, the colour cast control method of the liquid crystal display of the present invention, the color compensation that described each region is corresponding
Table is respectively adopted different color compensation parameters.
Further, the colour cast control method of the liquid crystal display of the present invention, the color compensation ginseng of described color compensation table
The acquisition methods of number is: optical pickocff is arranged at the front in display floater centre position, obtains i-th color compensation table
During color compensation parameter, being hidden by remaining color compensation table, the optics obtaining i-th color compensation table measured by optical pickocff
Data, obtain the color compensation parameter of i-th color compensation table.
Further, the colour cast control method of the liquid crystal display of the present invention, the optical data bag of described color compensation table
Include brightness and chromaticity coordinates.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1, the method for the present invention uses subregion color compensation and overall color to compensate to combine, it is achieved that facing and tiltedly
Different color compensating parameter is used in zones of different in the case of using different color compensation methods, and stravismus in the case of depending on；
2, the problem that the method for the present invention can improve big visual angle colour cast, it is achieved face and all will not go out in the case of big visual angle
Existing color offset phenomenon；
3, the method for the present invention uses intelligent-induction module, it is achieved color compensation automatically selects.
Accompanying drawing explanation
Fig. 1 is the structural representation of the existing liquid crystal display with color compensation table；
Fig. 2 is the fundamental diagram of the color compensation table of liquid crystal display shown in Fig. 1；
Fig. 3 is the result schematic diagram of liquid crystal display of the present invention；
Fig. 4 is the liquid crystal panel using blockette color compensation table of the present invention；
Fig. 5 is the fundamental diagram of the blockette color compensation table of the present invention；
Fig. 6 is the acquisition schematic diagram facing measurement color compensation parameter of the color compensation table 1 of the embodiment of the present invention；
Fig. 7 is the acquisition schematic diagram of the strabismus measuring color compensation parameter of the color compensation table 2 of the embodiment of the present invention.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
One liquid crystal display of the present invention, as it is shown on figure 3, liquid crystal display of the present invention is provided with display floater 10, sequential control
Device 20 processed and multiple source electrode driver (Source IC) 30.Time schedule controller 20 include clock signal device 21 and with this
The timing controller (T-con IC) 22 that clock signal device 21 connects, wherein, clock signal driver 21 sequentially produces R letter
Number, G-signal, B signal through timing controller (T-con) 22 transmit to source electrode driver (Source IC) 30, source electrode driver
(Source IC) 30 is by the R signal accepted, G-signal, the source electrode line of B signal output to display panels 10.
Color compensation table (Color Table) 40, as shown in Figure 4, color it is provided with in timing controller (T-con IC) 22
The color corresponding display floater 10 of compensation table (Color Table) 40, this color compensation table 40 is by timing controller (T-con) 22
Input the chrominance signal to display floater 10.
Include multiple subregion color compensation table in color compensation table 40, the plurality of subregion color compensation table by gray level (0～
255) constitute with rgb color compensating parameter, according to different gray levels, set the parameter that corresponding rgb color compensates.R signal,
After G-signal, B signal are input to timing controller 22, color compensation table 40 are searched corresponding gray level it is carried out color
Color compensation, is then input in display floater 10 by source electrode driver 30.
In this example it is shown that panel 10 is divided into 5 regions, it is respectively as follows: the firstth district being positioned in the middle of display floater 10
Territory 11, it is positioned at the second first area 12 of this side, first area 11, is positioned at the two the second district of this first area 11 opposite side
Territory 13, it is positioned at the 3rd first area 14 of this side, the second first area 12 and is positioned at the of the second second area 12 side
Three second areas 15, wherein, the second first area 12 and the second second area 13 are oppositely arranged, the 3rd first area 14 and the 3rd
Second area 15 is oppositely arranged.
That is: 5 regions of display floater are respectively as follows: and are positioned at first area in the middle of display floater, are positioned at this first area
Each two regions of every side, these four regions are all symmetrical arranged with first area, now have 3 color compensation tables.
When display floater is divided into 7 regions by chrominance signal, these 7 regions include: be positioned in the middle of display floater 10
First area, being positioned at each three regions of every side, first area, these six regions are all symmetrical arranged with this first area, now
There are 4 color compensation tables.
When display floater is divided into 9 regions by chrominance signal, these 9 regions include: be positioned in the middle of display floater 10
First area, being positioned at each four regions of every side, first area, these eight regions are all symmetrical arranged with this first area, now
There are 5 color compensation tables.
When display floater is divided into (2n-1) individual region by chrominance signal, should include in (2n-1) individual region: be positioned at display surface
First area in the middle of plate 10, being positioned at each n-1 region of every side, first area, this 2n-2 region is all with this first area
Being symmetrical arranged, now have n color compensation table, wherein, n is color compensation table number.
One subregion color compensation table of each region correspondence color compensation table 40 in display floater 10.
Intelligent-induction module 50 is used for detecting whether beholder is positioned at the centre position of display floater 10, this intelligent-induction mould
Block 50 is connected with timing controller 22.
When intelligent-induction module 50 detect beholder be positioned at display floater 10 in an intermediate position time, color compensation table 40
Open subregion color compensation function；When intelligent-induction module 50 detects beholder not in centre position, color compensation table
40 close subregion color compensation function.
The operation principle of blockette color compensation table is as it is shown in figure 5, comprise the steps:
The first step: the display floater of display panels is divided into several regions, each region correspondence is positioned at sequential control
One color compensation table of coremaking sheet；
Second step: R signal, G-signal, B signal are through input (Rx) the extremely input of timing controller (T-con IC) 22
To timing controller 22；
3rd step: intelligent-induction module 50 detects whether beholder is positioned at the centre position of display floater, the most then go to
4th step；Otherwise go to the 5th step；
4th step: subregion color compensation opened by color compensation table 40: show place according to R signal, G-signal, B signal
Each regional location of display floater, each region of display floater is carried out by color compensation table respectively according to corresponding color compensation table
Subregion color compensation, forwards the 6th step to；
5th step: subregion color compensation closed by color compensation table, uses the color compensation table that display panels is overall
Display floater is carried out overall color compensation, forwards the 6th step to；
6th step: after selecting, calculating and revise, transmit data to display floater and show.
The color compensation parameter of blockette color compensation table is obtained by the method shown in Fig. 6, Fig. 7.Fig. 6 is color compensation
Table 40 carries out the acquisition schematic diagram of color compensation parameter to the first area 11 of display floater 10, and optical pickocff is arranged at display
The front in the centre position of panel 10, hides second the 12, second second area the 13, the 3rd first area 14 and the 3rd, first area
(x, y), through calculating for second area 15, the brightness (Lum data) of optical pickocff measurement acquisition first area 11 and chromaticity coordinates
Obtain the color compensation parameter of first area 11.
Fig. 7 is the acquisition schematic diagram of the color compensation parameter of the second first area 12 and the second second area 13, obtains the
During the parameter of two first areas 12 and the second second area 13, before optical pickocff is still arranged at display floater 10 centre position
Side, and hides color first area the 11, the 3rd first area 14 and the 3rd second area 15, and optical pickocff obtains the two the first district
The brightness (θ Lum data) of territory 12 and the second second area 13 and chromaticity coordinates (θ x, θ y), through calculating the second first area
12 and the second color compensation parameter of second area 13.
The method of the parameter of the 3rd first area 14 and the 3rd second area 15, with above-mentioned, tired out the most one by one and is stated.
The above is only the some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvement, these improve the guarantor that should be regarded as the present invention
Protect scope.
Claims (8)
1. a colour cast control method for liquid crystal display, liquid crystal display is provided with display floater and timing controller, sequential
Color compensation table it is provided with, it is characterised in that comprise the following steps in control chip:
The first step: the display floater of liquid crystal display is divided into several regions, each region correspondence is positioned at timing controller
A color compensation table；
Second step: in R signal, G-signal, B signal input to timing controller；
3rd step: whether intelligent-induction module detecting beholder is positioned at the centre position of display floater, the most then go to the 4th
Step；Otherwise go to the 5th step；
4th step: subregion color compensation opened by color compensation table: according to R signal, G-signal, the display surface at B signal display place
Each regional location of plate, color compensation table carries out subregion according to corresponding color compensation table respectively to each region of display floater
Color compensation, forwards the 6th step to；
5th step: subregion color compensation closed by color compensation table, uses the color compensation table of display panels entirety to aobvious
Show that panel carries out overall color compensation, forward the 6th step to；
6th step: after selecting, calculating and revise, transmit data to display floater and show.
The colour cast control method of liquid crystal display the most according to claim 1, it is characterised in that described region is according to display surface
The vertical centrage of plate is symmetrical.
The colour cast control method of liquid crystal display the most according to claim 1, it is characterised in that the number in described region is
2n-1, n is color compensation table number, should include in (2n-1) individual region: is positioned at the first area in the middle of display floater, is positioned at the
2n the region in one every side, region, this 2n region is all symmetrical arranged with this first area.
The colour cast control method of liquid crystal display the most according to claim 3, it is characterised in that display floater is divided into 5
Region, is respectively as follows: and is positioned at first area in the middle of display floater, is positioned at the second first area of this side, first area, is positioned at
Second second area of this first area opposite side, it is positioned at the 3rd first area of this side, the second first area and is positioned at
3rd second area of the second second area side, wherein, the second first area and the second second area are oppositely arranged, and the three the
One region and the 3rd second area are oppositely arranged.
The colour cast control method of liquid crystal display the most according to claim 1, it is characterised in that described intelligent-induction module
It is arranged at the middle upper portion of display floater.
The colour cast control method of liquid crystal display the most according to claim 1, it is characterised in that described each region is corresponding
Color compensation table be respectively adopted different color compensation parameters.
The colour cast control method of liquid crystal display the most according to claim 6, it is characterised in that described color compensation table
The acquisition methods of color compensation parameter is: optical pickocff is arranged at the front in display floater centre position, obtains i-th color
When coloured silk compensates the color compensation parameter of table, being hidden by remaining color compensation table, optical pickocff is measured and is obtained i-th color benefit
Repay the optical data of table, obtain the color compensation parameter of i-th color compensation table.
The colour cast control method of liquid crystal display the most according to claim 6, it is characterised in that described color compensation table
Optical data includes brightness and chromaticity coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856856.8A CN106251822A (en) | 2016-09-27 | 2016-09-27 | A kind of colour cast control method of liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610856856.8A CN106251822A (en) | 2016-09-27 | 2016-09-27 | A kind of colour cast control method of liquid crystal display |
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| CN201610856856.8A Pending CN106251822A (en) | 2016-09-27 | 2016-09-27 | A kind of colour cast control method of liquid crystal display |
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| CN108986765A (en) * | 2018-06-29 | 2018-12-11 | 易诚高科（大连）科技有限公司 | A kind of display screen white point calibration method covering visual angle colour cast |
| CN109256105A (en) * | 2018-08-31 | 2019-01-22 | 友达光电股份有限公司 | Chroma adjustment system, method and display panel driver |
| CN109448660A (en) * | 2018-12-29 | 2019-03-08 | 成都中电熊猫显示科技有限公司 | Improve method, equipment and the storage medium of display view angle colour cast |
| CN109493784A (en) * | 2018-12-25 | 2019-03-19 | 福建华佳彩有限公司 | A kind of circuit structure of over-speed compensation pixel electrode voltage and its compensation method |
| WO2020258879A1 (en) * | 2019-06-27 | 2020-12-30 | 昆山国显光电有限公司 | Display apparatus |
| CN113327532A (en) * | 2021-04-28 | 2021-08-31 | 华兴源创(成都)科技有限公司 | Color cast compensation method and device of display panel, computer equipment and medium |
| US11920764B2 (en) | 2022-05-23 | 2024-03-05 | HKC Corporation Limited | Display apparatus and in-vehicle display device |
| US12254852B2 (en) | 2022-05-23 | 2025-03-18 | HKC Corporation Limited | Display controlling method, in-vehicle display device, and computer-readable storage medium |
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| CN113327532A (en) * | 2021-04-28 | 2021-08-31 | 华兴源创(成都)科技有限公司 | Color cast compensation method and device of display panel, computer equipment and medium |
| US11920764B2 (en) | 2022-05-23 | 2024-03-05 | HKC Corporation Limited | Display apparatus and in-vehicle display device |
| US12254852B2 (en) | 2022-05-23 | 2025-03-18 | HKC Corporation Limited | Display controlling method, in-vehicle display device, and computer-readable storage medium |
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Application publication date: 20161221 |