CN102929035A - Method for guaranteeing color consistency of display image quality, liquid crystal display panel and display - Google Patents
Method for guaranteeing color consistency of display image quality, liquid crystal display panel and display Download PDFInfo
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- CN102929035A CN102929035A CN2012104586639A CN201210458663A CN102929035A CN 102929035 A CN102929035 A CN 102929035A CN 2012104586639 A CN2012104586639 A CN 2012104586639A CN 201210458663 A CN201210458663 A CN 201210458663A CN 102929035 A CN102929035 A CN 102929035A
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Abstract
The invention provides a method for guaranteeing color consistency of display image quality. The method comprises the steps as follows: step 1, trial-producing a backlight sample by a white light emitting diode with chromaticity Bin, matching a standard LCD (liquid crystal display) optical element, measuring an optical parameter, and calculating a chromaticity offset relationship after the white light emitting diode with chromaticity Bin is matched with the LCD optical element; step 2, selectively dividing a chromaticity Bin region of the white light emitting diode into more than two different color ranges; step 3, respectively applying the white light emitting diode with the different color ranges in the step 2 to a backlight source of a backlight system of the LCD with the corresponding size; step 4, trail-producing a color filter, and correcting a light transmission parameter of an R\G\B (red\green\blue) unit of the color filter of the LCD optical element; and step 5, taking the corrected color filter of the LCD optical element as a standard, and matching with the matched backlight source in the step 3 to form a finished product. The color consistency of the display image quality of the LCD can be guaranteed, therefore the image quality is improved.
Description
Technical field
The present invention relates to field of display, be specifically related to a kind of method, display panels and display that guarantees to show the image quality color consistency.
Background technology
Along with LCD product class universalness degree improves constantly, people are also more and more higher to the requirement of liquid crystal display.The quality of LCD picture is determining the quality of liquid crystal display, and the quality of LCD picture is determined by display panels.Display panels in the liquid crystal display (LCD Panel) is comprised of the LCD optical element (LCD CELL) of the back light system that brightness is provided (B/L) and control interface; And the color rendering of display panels (LCD Panel) is then determined by the spectrum of the white-light emitting diode (WLED) in the back light system (B/L) and the colored filter (RGB Color Filter) in the LCD optical element (LCD CELL);
Because the deviation of production technology, there is certain skew in every WLED luminescent spectrum, and it is inconsistent to show as glow color, and its colourity bin distributes and is mapped in the CIE 1931 two-dimensional chromaticity coordinate systems, just has certain distribution range, i.e. the colour gamut of WLED.On the coordinate diagram with the gamut range of equivalent interval division WLED, i.e. the colourity Bin of WLED;
In order to guarantee to show the image quality color consistency, the chroma offset scope need reach: Δ (x, y)=(0.313,329)+/-0.020.In commercial production, can calibrate the colour temperature of every a slice display, (such as Chroma CA210) measures its chromatic value with precision optical instrument, colourity of the prior art allows deviation range to be: Δ (x, y)=(0.313,329)+/-0.030, this scope can not guarantee to show the consistance of image quality color, the method of improving at present this deviation range is to dwindle WLED colourity Bin range of application: but can reduce the WLED utilization rate of raw materials like this, and production cost is risen.
Summary of the invention
The object of the invention is to solve the problem that prior art exists, consider the relevance of the colored filter (RGB Color Filter) in back light system (B/L) and the LCD optical element (LCD CELL), overcome back light system in the traditional approach (B/L) to the dependence of the colored filter (RGBColor Filter) in the LCD optical element (LCD CELL), realize that WLED colourity Bin subregion is multiplexing, mate flexibly with RGB Color Filter, both can improve LCD Panel colourity consistance, improved again the raw-material utilization factor of WLED, reduce production costs, guarantee that the liquid crystal display display color is consistent, improve image quality.
In order to reach above-mentioned technical purpose, the present invention by the following technical solutions:
A kind of method that guarantees to show the image quality color consistency is characterized in that, concrete steps are:
Step 1 is manufactured experimently sample backlight with the white-light emitting diode of each colourity Bin, and match-on criterion LCD optical element is measured optical parameter, calculates the white-light emitting diode of each colourity Bin and the chroma offset relation after the collocation of LCD optical element;
Step 3 is applied to the white-light emitting diode of different colour gamuts in the step 2 respectively the backlight of corresponding size LCD backlight system;
Step 4, the trial-production colored filter, revise LCD optical element colored filter R G the printing opacity parameter of B unit;
Step 5, take the colored filter of revised LCD optical element as standard, the backlight that mates in the collocation step 3 forms finished product.
Preferably, the chroma offset standard is: Δ (x, y)=(0.313,329)+/-0.020, and the optical parameter of finished product in the measuring process five if meet, is then produced power in enormous quantities; If be not inconsistent, then return step 4 and carry out.
The present invention also provides a kind of display panels, has used assurance provided by the invention to show the method for image quality color consistency.
The present invention also provides a kind of liquid crystal display, comprises display panels provided by the invention.
Technique effect of the present invention is: assurance provided by the invention shows the method for image quality color consistency, overcome in the traditional approach back light system (B/L) to the dependence of the colored filter in the LCD optical element (LCD CELL) (RGB Color Filter), realize that WLED colourity Bin subregion is multiplexing, mate flexibly with RGB Color Filter, both can improve LCD Panel colourity consistance, improved again the raw-material utilization factor of WLED, reduced production costs.Display panels provided by the invention can guarantee that the display display color is consistent.Liquid crystal display provided by the invention shows that the image quality color is consistent, and image quality is high.
Description of drawings
Fig. 1 is the process flow diagram of the specific embodiment of the assurance provided by the invention method that shows the image quality color consistency;
Fig. 2 is CIE 1931 chromaticity coordinate figure;
Fig. 3 is that WLED is mapped in the distribution schematic diagram on CIE 1931 chromaticity coordinates;
Fig. 4 is the multiplexing synoptic diagram of each colourity Bin subregion of embodiment of the invention WLED;
Fig. 5 is the WLED utilization rate of raw materials synoptic diagram of each colourity Bin subregion of the embodiment of the invention after multiplexing;
Fig. 6 is two kinds of colour gamut distribution plans in the WLED colourity Bin district of prior art setting;
Fig. 7 is the raw-material utilization factor comparison diagram of WLED under two kinds of colour gamut states among Fig. 6.
Embodiment
Below in conjunction with drawings and Examples the present invention is further detailed:
As shown in Figure 1, a kind of method that guarantees to show the image quality color consistency, concrete steps are:
Step 1, white-light emitting diode (WLED) with each colourity Bin is manufactured experimently sample backlight, match-on criterion LCD optical element (LCD CELL), measure optical parameter, calculate the white-light emitting diode (WLED) of each colourity Bin and the chroma offset relation after LCD optical element (LCD CELL) collocation;
Fig. 2 is CIE 1931 chromaticity coordinate figure, and its outside curved boundary is spectrum locus, with optical wavelength (nanometer: nm) mark.The color of the respectively corresponding human eye of the natural light of different wave length institute perception, the border is heavy shade, more past center, it is unsaturated that color is tending towards, and coordinate center 201 is the standard white light source colour.The WLED that Fig. 3 shows 201 place's white light source look outputs among Fig. 2 is mapped in the distribution on CIE 1931 chromaticity coordinates, and each colourity bin is with a letter representation.WLED to each colourity Bin among the figure manufactures experimently sample backlight, match-on criterion LCD CELL, and the chroma offset relation after its coupling is calculated in measurement.
Step 3 is applied to the WLED of different colour gamuts in the step 2 respectively the backlight of corresponding size LCD backlight system;
Colour gamuts different among Fig. 4 is applied to the backlight of different size LCD backlight system, as, 401 colour gamuts are applied to 18.5 cun product, and 402 colour gamuts are applied to 20 cun product, 403 colour gamuts are applied to 21.5 cun product, and 404 colour gamuts are applied to 23 cun product.
Step 4, trial-production colored filter (RGB Color Filter), revise LCD CELL colored filter (RGB Color Filter) R G the printing opacity parameter of B unit, the white picture colourity of LCD Panel satisfies the target offset amount after making combination: Δ (x, y)=(0.313,0.329)+/-0.020;
Step 5, take the colored filter (RGB Color Filter) of revised LCD CELL as standard, the backlight that mates in the collocation step 3 forms finished product.
In order to satisfy the conforming requirement of LCD Panel colourity, the chroma offset scope need reach: Δ (x, y)=(0.313,329)+/-0.020.Measure the output optical parameter (x, y) of finished product, if chroma offset satisfies this scope, then produce in enormous quantities; If outside this scope, then return step 4 and again manufacture experimently colored filter, revise LCD CELL colored filter (RGB Color Filter) R G the printing opacity parameter of B unit.
As shown in Figure 4, each colour gamut chroma offset amount is Δ (x, y)=(0.313,329)+/-0.020, satisfies the conforming requirement of LCD Panel colourity, simultaneously as shown in Figure 5, and the raw-material utilization factor P of this embodiment WLED
0Reach 97%.Fig. 6 and Fig. 7 have reacted the raw-material high usage of WLED and the conforming contradiction of colourity in the prior art, if guarantee to show the image quality color consistency, gamut range is set as 601 zones, this moment, the chroma offset scope was: Δ (x, y)=(0.313,329)+/-0.020, then this moment WLED raw-material utilization factor P
1Only be 71%; If make the raw-material utilization factor P of WLED
2Reach 97%, then gamut range need to be set as 602 zones this moment, the chroma offset scope of this moment becomes: Δ (x, y)=(0.313,329)+/-0.030, just can not satisfy the requirement that shows the image quality color consistency.
A kind of method that guarantees to show the image quality color consistency provided by the invention, considered the relevance of the colored filter (RGB Color Filter) in back light system (B/L) and the LCD optical element (LCD CELL), overcome in the traditional approach back light system (B/L) to the dependence of the colored filter in the LCD optical element (LCD CELL) (RGB Color Filter), realize that WLED colourity Bin subregion is multiplexing, mate flexibly with RGB Color Filter, both can improve LCD Panel colourity consistance, improved again the raw-material utilization factor of WLED, reduced production costs.
The present invention also provides a kind of display panels (LCD Panel), has used the method that guarantees to show the image quality color consistency among the present invention.This display panels can guarantee that the display display color is consistent.
The present invention also provides a kind of liquid crystal display, comprises display panels provided by the invention (LCDPanel).This liquid crystal display display color is consistent, and the display frame quality is high.
Claims (4)
1. a method that guarantees to show the image quality color consistency is characterized in that, concrete steps are:
Step 1 is manufactured experimently sample backlight with the white-light emitting diode of each colourity Bin, and match-on criterion LCD optical element is measured optical parameter, calculates the white-light emitting diode of each colourity Bin and the chroma offset relation after the collocation of LCD optical element;
Step 2 is divided into plural different colour gamut with the colourity Bin regioselectivity of white-light emitting diode;
Step 3 is applied to the white-light emitting diode of different colour gamuts in the step 2 respectively the backlight of corresponding size LCD backlight system;
Step 4, the trial-production colored filter, revise LCD optical element colored filter R G the printing opacity parameter of B unit;
Step 5, take the colored filter of revised LCD optical element as standard, the backlight that mates in the collocation step 3 forms finished product.
2. assurance as claimed in claim 2 shows the method for image quality color consistency, it is characterized in that the chroma offset standard is: Δ (x, y)=(0.313,329)+/-0.020, and the optical parameter of finished product in the measuring process five if meet, is then produced power in enormous quantities; If be not inconsistent, then return step 4 and carry out.
3. a display panels is characterized in that, has used claim 1 or 2 described assurances to show the method for image quality color consistency.
4. a liquid crystal display is characterized in that, comprises display panels claimed in claim 3.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103447247A (en) * | 2013-09-02 | 2013-12-18 | 深圳市华星光电技术有限公司 | Screening method applicable to fluorescent powder optical diaphragms of backlight module as well as backlight module |
| CN103915045A (en) * | 2014-04-23 | 2014-07-09 | 广东威创视讯科技股份有限公司 | Display and method for manufacturing same |
| US9025149B2 (en) | 2013-09-02 | 2015-05-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Screening method of a phosphor-based optical film used in a backlight module and backlight module thereof |
| CN105929574A (en) * | 2016-06-30 | 2016-09-07 | Tcl显示科技（惠州）有限公司 | Production method of display module |
| CN106292011A (en) * | 2016-10-24 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of assembling equipment and assemble method |
| CN107830930A (en) * | 2017-10-17 | 2018-03-23 | 汽-大众汽车有限公司 | A kind of method of testing and test equipment of batch white backlight part |
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| CN101587695A (en) * | 2009-04-09 | 2009-11-25 | 深圳华映显示科技有限公司 | Image processing method capable of reducing color deviation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103447247A (en) * | 2013-09-02 | 2013-12-18 | 深圳市华星光电技术有限公司 | Screening method applicable to fluorescent powder optical diaphragms of backlight module as well as backlight module |
| US9025149B2 (en) | 2013-09-02 | 2015-05-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Screening method of a phosphor-based optical film used in a backlight module and backlight module thereof |
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| CN105929574A (en) * | 2016-06-30 | 2016-09-07 | Tcl显示科技（惠州）有限公司 | Production method of display module |
| CN106292011A (en) * | 2016-10-24 | 2017-01-04 | 京东方科技集团股份有限公司 | A kind of assembling equipment and assemble method |
| CN107830930A (en) * | 2017-10-17 | 2018-03-23 | 汽-大众汽车有限公司 | A kind of method of testing and test equipment of batch white backlight part |
| CN107830930B (en) * | 2017-10-17 | 2020-04-24 | 一汽-大众汽车有限公司 | Test method and test equipment for batch white backlight parts |
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| CN102929035B (en) | 2015-03-18 |
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