CN101029988A - Liquid-crystal display panel and method for doubling gamma curve and illuminating red, green and blue triple colors - Google Patents
Liquid-crystal display panel and method for doubling gamma curve and illuminating red, green and blue triple colors Download PDFInfo
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- CN101029988A CN101029988A CN 200710091338 CN200710091338A CN101029988A CN 101029988 A CN101029988 A CN 101029988A CN 200710091338 CN200710091338 CN 200710091338 CN 200710091338 A CN200710091338 A CN 200710091338A CN 101029988 A CN101029988 A CN 101029988A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 32
- 239000003086 colorant Substances 0.000 title claims description 3
- 239000000758 substrate Substances 0.000 claims description 14
- 239000010410 layer Substances 0.000 description 35
- 230000005684 electric field Effects 0.000 description 15
- 230000008859 change Effects 0.000 description 12
- 239000012044 organic layer Substances 0.000 description 11
- 238000002834 transmittance Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A liquid crystal display face plate consists of bottom base plate including multiple pixel electrode prepared on top surface of bottom base plate in array mode, top base plate including top electrode being formed on bottom surface of top base plate, liquid crystal layer being sandwiched between two said base plates. It is featured providing three sets of independent common electrodes to tree-color pixel of red-blue-green to increase/decrease potential difference of each color pixel for making gamma curve with red-blue-greed tricolor luminous be overlapped.
Description
The present invention is to be that November 28, application number in 2003 are 200310115763.2, denomination of invention is divided an application for " improving the apparatus and method that gamma curve separates " the applying date.
Technical field
The present invention is about a kind of apparatus and method of improving LCD color correctness, and especially a kind of phenomenon of revising the separation of RGB gamma curve is to improve the apparatus and method of display color correctness; Be a kind of display panels and the method that makes the luminous gamma curve coincidence of its redgreenblue concretely.
Background technology
Along with the thin film transistor (TFT) manufacturing technology is progressive fast, advantages such as LCD is frivolous owing to having possessed, power saving, radiationless line, and a large amount of being applied in the various electronic products such as personal digital aid (PDA), notebook computer, digital camera, Video Camera, mobile phone.Yet, because LCD is a non-self luminous display, therefore use a cold cathode fluorescent lamp as backlight traditionally, simultaneously, see through liquid crystal display drive circuit input shows signal, control the transmittance of each pixel liquid crystal layer of RGB, reach the purpose of full-color demonstration with allotment RGB brightness ratio.
As shown in Figure 1, an exemplary pixels assembly corresponds to the penetrance (transparency) of redgreenblue light under the different driving electric field.Horizontal ordinate system corresponds to electric field intensity among the figure, and ordinate corresponds to light transmittance.Because liquid crystal molecule is for the visible light of different wave length, have different refractive index (refractivity) and different bit phase delay (retardation) effects, therefore, under same electric field intensity drove, this pixel components had nothing in common with each other for the penetrance of redgreenblue light.
Generally speaking, for the foundation of visual experience that quantizes the user to provide LCD circuit to design, usually system corresponds to the relation that human eye is experienced brightness with the light transmittance of gamma (Gamma) curve representation liquid crystal layer, use intensity by the liquid crystal layer driving electric field, directly correspondence push away human eye vision experience brightness.As shown in Figure 2, the curve of an exemplary pixels assembly corresponds to the electric field shown in Figure 1 and the corresponding relation of penetrance.Horizontal ordinate is corresponding to the illuminant colour exponent number among the figure, and ordinate system is corresponding to light transmittance.As seen represent the gamma curve of redgreenblue light to be separated from each other, even expression provides liquid crystal layer identical electric field intensity, the brightness ratio of redgreenblue light can't be kept necessarily, and will depart from LCD preset white balance point, cause producing deviation between finding display color and input shows signal.
In order to address the above problem, a typical method is directly to adjust in the LCD, and the thickness of liquid crystal layer of redgreenblue pixel puts on the electric field intensity of different color pixel liquid crystal layer with change.As shown in Figure 3, a liquid crystal layer 200 clampings are between two substrates 100 and 300 up and down, and, at infrabasal plate 300 upper surfaces, correspond to the pixel of different color, be manufactured with the transparent organic layer 312R of different-thickness respectively, 312G, 312B, and, correspond to the pixel of different color at the lower surface of upper substrate 100, be manufactured with chromatic filter layer 110R, 110G, 110B.The pixel electrode 310 of this three color pixel is made in the upper surface of described transparent organic layer 312, and common electrode 120 is made in chromatic filter layer 110R, 110G, and the lower surface of 110B is used and produce driving electric field E in liquid crystal layer 200.In addition, two alignment films 130 and 320 are made in the inner face of common electrode 120 and pixel electrode 310 respectively, so that the usefulness of liquid crystal layer 200 orientations to be provided.
It should be noted that the intensity of driving electric field E, the distance that is subjected between pixel electrode 310 and the common electrode 120 determines.Therefore, by changing in the different color pixel, the thickness of transparent organic layer 312, or change the thickness of chromatic filter layer 110 of all kinds, the thickness that can adjust liquid crystal layer 200 is to change the intensity of driving electric field E.And the change of the change of driving electric field intensity E and thickness of liquid crystal layer 200, again can be in order to adjusting the penetrance of liquid crystal layer 200, thereby can revise the gamma curve of redgreenblue light.
Yet this solution has following shortcoming:
One, before making pixel electrode, must increase by a processing procedure making transparent organic layer 312, and cause the cost of manufacture increase.
Two, because transparent organic layer 312 has a rugged upper surface, thereby increase in the follow-up LCD alignment processing procedure, make alignment film 320 in the degree of difficulty of these transparent organic layer 312 upper surfaces.
Three, pixel electrode 310 is the rugged upper surface that is covered in transparent organic layer 312, therefore, between the pixel electrode 310 of adjacent different color, will produce transverse electric field, and influence the normal operation of liquid crystal molecule.
Four, the chromatic filter layer 110 of different-thickness except influencing the brightness of display color, simultaneously, also influences follow-up making alignment film 130 in the degree of difficulty on chromatic filter layer 110 surfaces.
Solve outside the method for gamma curve separation by changing the structure of pixel components except above-mentioned, also can adopt the method for the liquid crystal display signal being done the brightness feedback.Promptly digital displaying signal be converted to simulating signal with input display panel before, directly downgrade or increase the color range number of RGB digital displaying signal of all kinds, to reach the purpose of revising gamma curve.Yet in the process that downgrades or increase the color range number, the signal of different display levels but may produce identical display level after the adjustment originally.Thereby cause the display level of each color part to be sacrificed, and cause display to show the reduction of usefulness.
Except the above-mentioned method of adjusting at the color range number of digital displaying signal, another typical method is to be converted in the process of simulating signal employed reference potential value at digital displaying signal to adjust.Generally speaking, this reference potential value system is in order to set up the corresponding relation that digital displaying signal is converted to simulating signal.Illustrate, under the color range number of different digital shows signal and the corresponding situation, the required light transmittance that reaches of liquid crystal layer, its proportionate relationship is also inequality.Therefore, must be by adjusting reference potential value, to remedy this nonlinear proportionate relationship corresponding to the digital displaying signal of different color ranges.
In other words, the method promptly is that the reference potential value of RGB shows signal of all kinds is adjusted respectively.And setting up when the number conversion of digital displaying signal color range is the corresponding relation of simulating signal, solve the puzzlement that demonstration gamma curve of all kinds separates.Therefore, this method must be made three groups of adjustable reference potential circuit, and each group reference potential circuit must provide enough current potential adjustment amounts again, to meet by minimum display level required to the highest display level.Hence one can see that, though this kind provide the method for adjustment of three groups of reference potential circuit can be accurately with the gamma curve correction to overlapping, the electrical voltage point of its required adjustment is gone up and inconvenient so use too much and too complicated.
Summary of the invention
In view of this, the method that the purpose of this invention is to provide a kind of display panels and the luminous gamma curve of its redgreenblue is overlapped.
The invention provides a kind of gamma-corrected device, be connected to display panels, use so that the luminous gamma curve of this display panels redgreenblue overlaps, described gamma-corrected device comprises:
Digital analog converter (Digital Analog Converter), in order to the redgreenblue digital signal is converted to simulating signal, see through each signal wire (Signal Line) on the display panels respectively, import the pixel components of corresponding color, so that pixel voltage to be provided;
A plurality of compensating circuits are installed on respectively between digital analog converter and the described signal wire, in order to increase and decrease described simulating signal intensity, to adjust the display brightness of each pixel; And
Adjust circuit and be connected to described compensating circuit, use the compensation rate of each compensating circuit of control.
For achieving the above object, the invention provides a kind of usefulness so that the method that the luminous gamma curve of display panels redgreenblue overlaps, respectively at the redgreenblue pixel, three groups of reference voltage levels (Common Voltage) independently separately are provided, put on the potential difference (PD) of this three color pixel with increase and decrease respectively, so that the luminous gamma curve of redgreenblue is overlapping.
In addition, for achieving the above object, the present invention also provides a kind of display panels with gamma-corrected device, uses so that the luminous gamma curve of redgreenblue overlaps, and described display panels comprises:
Infrabasal plate, described infrabasal plate comprise that plurality of pixel electrodes is made in the upper surface of described infrabasal plate with the array distribution;
Upper substrate, described upper substrate comprises top electrode, described top electrode is made in the lower surface of described upper substrate; And
Liquid crystal layer, described liquid crystal layer clamping is between described upper substrate and described infrabasal plate;
The described polar system that powers on is divided into a plurality of blocks that are separated from each other, and corresponds to the pixel of different display colors respectively, so that different reference voltage levels to be provided.
Description of drawings
Figure 1 shows that an exemplary pixels assembly shows the graph of a relation of its driving electric field and light transmittance corresponding to redgreenblue;
Figure 2 shows that the gamma curve that an exemplary pixels assembly shows corresponding to redgreenblue;
Figure 3 shows that a typical case solves the synoptic diagram of gamma curve separation method; The method is by adjusting the thickness that liquid crystal layer corresponds to RGB demonstration of all kinds, to adjust gamma curve;
Figure 4 shows that the synoptic diagram of gamma-corrected device one preferred embodiment of the present invention;
Figure 5 shows that the synoptic diagram of another embodiment of gamma-corrected device of the present invention;
Fig. 6 A is depicted as the synoptic diagram that the present invention has LCD one preferred embodiment of gamma-corrected function;
Fig. 6 B is depicted as the synoptic diagram that the present invention has LCD one preferred embodiment of gamma-corrected function.
The figure number explanation
Upper substrate 100,400 infrabasal plates 300,600
Liquid crystal layer 200,500 transparent organic layers 312
Common electrode 120,420 pixel electrodes 310,610
Gamma-corrected device 10 digital analog converters 12
Compensating circuit 14 is adjusted circuit 16
Both alignment layers 130,320,430,620
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and improve the apparatus and method that gamma curve separates.
The following stated is gamma-corrected device one preferred embodiment of the present invention.This gamma-corrected device is connected to display panels, in order to the shows signal of each pixel of input display panels is carried out gamma-corrected (Gamma Correction).
As shown in Figure 4, this gamma-corrected device 10 comprises a digital analog converter (Digital AnalogConverter) 12, a plurality of compensating circuit 14 and three adjustment circuit 16.Digital analog converter 12 produces simulating signal output in order in conjunction with timing control signal and redgreenblue digital displaying signal.Subsequently, this simulating signal is not via the signal wire on the display panels 20 (indicating among the figure), and the pixel components of importing corresponding color is to provide pixel voltage.Compensating circuit 14 is installed on the rear end of digital analog converter 12, at the simulating signal of each signal wire of input, compensates the intensity of this simulating signal, to adjust the display brightness of each pixel.
Adjust circuit 16 and be connected to compensating circuit 14, to control the compensation rate of 14 pairs of simulating signals of each compensating circuit.And three adjustment circuit 16R, 16G, 16B compensates at red, green and blue demonstration respectively.And each is adjusted, and device has a variable resistor (not indicating among the figure) in the circuit 16.The user can adopt manual mode to adjust variable-resistance resistance value, to change the output voltage values of adjusting circuit 16, uses the compensation rate of each compensating circuit 14 is adjusted.In addition, adjustment circuit 14 also can directly capture 18 detectings of luminance detection device and obtain, the data of each pixel display brightness of RGB, and, adjust the size of output voltage automatically according to these data, with the compensation rate of correction-compensation circuit 16.
Generally speaking, adjusting circuit 16 is made on the printed circuit board (PCB), digital analog converter 12 is made on the source driving chip (not indicating among the figure) of display panels 20 with compensating circuit 14, and printed circuit board (PCB) connects display panels 20 display pixels of all kinds via described source driving chip.Yet (this adjusts circuit 16 and also can be made on the glass substrate for Low Temperature Poly Silicon, LTPS) processing procedure if adopt low temperature polycrystalline silicon.
Generally speaking, because gamma-corrected is mainly adjusted the relative brightness ratio that the redgreenblue pixel shows, therefore, does not need in the practical application three look shows signal are all compensated, can make a benchmark for the brightness adjustment wherein, only revise all the other two look shows signal.As shown in Figure 5, another embodiment that shows gamma-corrected device 10 of the present invention, in the present embodiment, show the benchmark of adjusting as brightness with blueness, therefore, only need add compensating circuit 14R and 14G and adjust circuit 16R and 16G, so that red with green demonstration is compensated, and can further simplify gamma-corrected device 10 of the present invention, also obtain the desired result of gamma-corrected simultaneously.
Another embodiment of the present invention is at the redgreenblue pixel, and three groups of top electrodes independently separately are set.Top electrode as used herein is in order to replace the common electrode (Common Electrode) of available liquid crystal display, and therefore, the reference voltage of demonstration of all kinds (Common Voltage) value can see through described three groups of top electrodes, is adjusted respectively.
Fig. 6 A and Fig. 6 B are depicted as, and the display panels that the present invention has the gamma-corrected function comprises infrabasal plate 600, upper substrate 400 and liquid crystal layer 500.A plurality of bottom electrodes 610 distribute with array and are made in infrabasal plate 600 upper surfaces, according to shows signal, provide each pixel operation voltage (Operation Voltage) value, and both alignment layers 620 is made in the upper surface of bottom electrode 610, so that the usefulness of liquid crystal alignment to be provided. Chromatic filter layer 410R, 410G, 410B are made in the lower surface of upper substrate 400, and top electrode 420 is made in chromatic filter layer 410R, 410G, the lower surface of 410B.Top electrode 420 can be divided into a plurality of strip block 420R, 420G, and 420B, and both alignment layers 430 is to make the lower surface of top electrode 420, so that the usefulness of liquid crystal alignment to be provided.Each strip block 420 corresponds to same delegation respectively, has the bottom electrode 610R of identical display color pixel, 610G, 610B.In addition, keep the good insulation performance effect between each strip block 420, between adjacent two strip blocks 420, can make an insulation wall 4202, to prevent the generation of transverse electric field in order to make.Liquid crystal layer 500 clampings and utilize the potential difference (PD) of top electrode 420 and bottom electrode 610 to drive liquid crystal molecule and rotate between two both alignment layers 620 and 430.
Shown in Fig. 6 B, three groups of common voltage value Vcom_R, Vcom_G, Vcom_B provides respectively to the strip block 420R of identical display color, 420G, 420B should be arranged.By adjusting this common voltage value Vcom_R, Vcom_G, the size of Vcom_B can change the electric field strength E 1 in the liquid crystal layer 500 of each display color, E2, E3 uses the liquid crystal alignment of adjusting corresponding liquid crystal layer 500, to change light transmittance.Therefore, the brightness ratio of each display color relation can be adjusted according to this, makes the gamma curve of each display color overlapped.
Described three groups of top electrodes independently separately are to be connected to a control circuit (indicating among the figure) respectively, respectively organize the common voltage value of top electrode to adjust input.With regard to a preferred embodiment, in control circuit, a variable resistor can be set, provide the user to adjust this variable-resistance size, to change the common voltage value Vcom_R of redgreenblue pixel, Vcom_G, Vcom_B with manual mode.In addition, this control circuit also can be directly by the RGB display brightness of all kinds of luminance detection device detecting, and the common voltage value of described each color pixel is adjusted in feedback.
Compared to the apparatus and method that tradition correction redgreenblue gamma curve separates, apparatus and method provided by the present invention have following advantage:
One, various embodiments of the present invention are utilized the improvement on the circuit, shows signal are compensated, to revise the gamma curve that redgreenblue shows.Therefore, must not change the processing procedure and the design of original LCD, can avoid the increase of cost of manufacture yet.
Two, simultaneously as shown in Figure 3, compared to traditionally by the thickness of adjusting transparent organic layer 312 or the thickness that changes red bluish-green chromatic filter layer 110, to change the penetrance of liquid crystal layer 200.Because the present invention need not make this transparent organic layer 312, therefore, can avoid aforementioned because of making transparent organic layer 312 on infrabasal plate 300, the problem that is derived.
Three, as mentioned before, traditionally with the method for circuit modifications digital displaying signal, will lose partly color range number, and the present invention system carries out the feedback correction to simulating signal, does not involve the color range number of digital displaying signal, thereby can avoid the generation of this problem.
Four, as mentioned before, be converted in the process of simulating signal at digital displaying signal traditionally, the method that employed reference potential value is adjusted, must make three groups of adjustable reference potential circuit, each group reference potential circuit must provide enough current potential adjustment amounts again, to meet by minimum display level required to the highest display level.On the other hand, digital displaying signal of the present invention is converted in the process of simulating signal, only through the adjustment of one group of reference potential circuit (among the figure indicate), to set up the corresponding relation that digital displaying signal is converted to simulating signal.And adjustment circuit 16 used in the present invention is a benchmark with wherein of the same colour of redgreenblue again, adjusts the simulating signal size that all the other two looks show.In other words, it is to revise at the relative little deviation value of redgreenblue demonstration that the present invention adjusts circuit 16, therefore, the required adjustment amount that provides, much smaller than the required current potential adjustment amount that provides of described reference potential circuit, be simply more than described reference potential circuit with design and the making of adjusting circuit 16.
The above only describes the present invention in detail with preferred embodiment, and person skilled in the art person can clearly understand, and various variations and the change carried out under scope that does not break away from claim of the present invention and spirit do not break away from the spirit and scope of the present invention.
Claims (5)
1. one kind with so that the method that the luminous gamma curve of display panels redgreenblue overlaps, wherein respectively at the redgreenblue pixel, three groups of reference voltage levels independently separately are provided, put on the potential difference (PD) of described redgreenblue pixel with increase and decrease respectively, so that the luminous gamma curve of redgreenblue is overlapping.
2. a kind of usefulness according to claim 1 is so that the method that the luminous gamma curve of display panels redgreenblue overlaps, wherein said three groups of reference voltage levels independently separately, put on three groups of top electrodes independently separately, and described three groups of top electrodes are made in same electrode layer.
3. the display panels with gamma-corrected device is used so that the luminous gamma curve of redgreenblue overlaps, and wherein said display panels comprises:
Infrabasal plate, described infrabasal plate comprise that plurality of pixel electrodes is made in the upper surface of described infrabasal plate with the array distribution;
Upper substrate, described upper substrate comprises top electrode, described top electrode is made in the lower surface of described upper substrate; And
Liquid crystal layer, clamping is between described upper substrate and described infrabasal plate;
Described top electrode is divided into a plurality of blocks that are separated from each other, and corresponds to the pixel of different display colors respectively, so that different reference voltage levels to be provided.
4. a kind of display panels with gamma-corrected device according to claim 3 wherein is made in same row in order to show the described pixel electrode of same hue, to identical reference voltage level should be arranged.
5. a kind of display panels with gamma-corrected device according to claim 3, wherein said top electrode provide three groups of different described reference voltage levels, with the described display panels redgreenblue of correspondence pixel components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100913382A CN100489608C (en) | 2003-11-28 | 2003-11-28 | Liquid-crystal display panel and method for superposing gamma curve and illuminating red, green and blue triple colors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100913382A CN100489608C (en) | 2003-11-28 | 2003-11-28 | Liquid-crystal display panel and method for superposing gamma curve and illuminating red, green and blue triple colors |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101157632A Division CN100343892C (en) | 2003-11-28 | 2003-11-28 | Equipment and method for improving separation of gamma curve |
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| CN101029988A true CN101029988A (en) | 2007-09-05 |
| CN100489608C CN100489608C (en) | 2009-05-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104317083A (en) * | 2014-10-28 | 2015-01-28 | 重庆京东方光电科技有限公司 | Display panel and device |
| CN106405954A (en) * | 2016-11-29 | 2017-02-15 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method thereof |
| CN106601203A (en) * | 2016-12-27 | 2017-04-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and device |
| CN109712580A (en) * | 2018-12-24 | 2019-05-03 | 惠科股份有限公司 | Display panel and its control method, control equipment |
| CN111489687A (en) * | 2020-04-24 | 2020-08-04 | 厦门天马微电子有限公司 | Pixel driving circuit, display panel, display device and driving method |
| CN112002288A (en) * | 2020-08-28 | 2020-11-27 | 深圳市华星光电半导体显示技术有限公司 | Chrominance adjusting method, chrominance adjusting device and display panel |
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2003
- 2003-11-28 CN CNB2007100913382A patent/CN100489608C/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104317083A (en) * | 2014-10-28 | 2015-01-28 | 重庆京东方光电科技有限公司 | Display panel and device |
| CN106405954A (en) * | 2016-11-29 | 2017-02-15 | 深圳市华星光电技术有限公司 | Display panel and manufacturing method thereof |
| CN106601203A (en) * | 2016-12-27 | 2017-04-26 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and device |
| CN109712580A (en) * | 2018-12-24 | 2019-05-03 | 惠科股份有限公司 | Display panel and its control method, control equipment |
| WO2020134964A1 (en) * | 2018-12-24 | 2020-07-02 | 惠科股份有限公司 | Display panel and control method and control device therefor |
| US11315507B2 (en) | 2018-12-24 | 2022-04-26 | HKC Corporation Limited | Display panel having column inversion polarity and compensation voltage driving method |
| CN111489687A (en) * | 2020-04-24 | 2020-08-04 | 厦门天马微电子有限公司 | Pixel driving circuit, display panel, display device and driving method |
| CN111489687B (en) * | 2020-04-24 | 2021-08-06 | 厦门天马微电子有限公司 | Pixel driving circuit, display panel, display device and driving method |
| CN112002288A (en) * | 2020-08-28 | 2020-11-27 | 深圳市华星光电半导体显示技术有限公司 | Chrominance adjusting method, chrominance adjusting device and display panel |
| US11640804B2 (en) | 2020-08-28 | 2023-05-02 | Shenzhen China Star Optoelectronics Semiconductor Display Techoology Co., Ltd. | Chromaticity adjustment method, chromaticity adjustment device, and display panel |
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| CN100489608C (en) | 2009-05-20 |
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