CN111862888B - Four-color low-blue-light wide-color-gamut display method, device, system and storage medium - Google Patents
Four-color low-blue-light wide-color-gamut display method, device, system and storage medium Download PDFInfo
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Abstract
The invention relates to a method, a device, a system and a storage medium for displaying four-color low-blue light wide color gamut, wherein the method comprises the following steps: setting a single pixel to have 4 color compositions of red, green, cyan and blue; selecting a cyan color coordinate, and converting the color of an input video signal pixel into a CIE XYZ color space; substituting the tristimulus values of the 4 colors of the red, green, blue and cyan, and calculating a group of 4 color ratios of the red, green, blue and cyan with the minimum blue ratio; and controlling the driving circuit to output the red, green, blue and green mixed color output with different proportions. The LED display screen has the advantages that the picture color cast can not be caused, the harmful blue light proportion of low wavelength is guaranteed to be the lowest under the condition that the display color is correct, so that the LED display screen is more comfortable to watch, the LED display screen achieves a more vivid and vivid high-definition display effect, and the display quality of the LED display screen is greatly improved. The technical scheme provided by the invention can be applied to the field of ultra-high-definition display of the high-definition LED display screen.
Description
Technical Field
The invention belongs to the technical field of ultra-high-definition display of LED display screens, and particularly relates to a method, a device and a system for displaying four-color low-blue light wide color gamut and a storage medium.
Background
Existing LED display screens typically use red, green and blue as the 3 primary colors for each pixel and use a mixture of different ratios of the 3 primary colors to produce the different colors required. The prior art has red, green, blue and yellow 4 color displays to produce better golden yellow, and red, green, blue and white 4 color displays to reduce power consumption in white and to achieve brighter display content. Typically, to obtain a larger display gamut and obtain a purer blue color, a blue light source with a lower wavelength is selected for the blue color of the primary colors red, green, and blue 3. However, lower wavelength blue light is harmful to the human eye. Especially when the LED display screen displays high-brightness white, the proportion of the low-wavelength blue light of the electronic display is larger than that of the low-wavelength blue light in natural light. The prior art can adjust for low blue light modes by using the software of the electronic display. However, in the prior art, the blue light ratio is directly reduced through software, which causes the color cast of the picture, and the picture looks unnatural, which causes the poor display quality of the LED display screen, and thus the method is not suitable for the ultra-high definition display field of the high-definition LED display screen.
Disclosure of Invention
The present invention is directed to a method, an apparatus, a system and a storage medium for four-color low-blue wide color gamut display, so as to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
an embodiment of the present invention provides a method for displaying a four-color low-blue wide color gamut, where the method includes:
red, green, blue and white 4 points of a target color space of an input video signal, where the full amplitude of red XYZ tristimulus values is (X)r,Yr,Zr) The full amplitude XYZ tristimulus value of green is (X)g,Yg,Zg) Blue full amplitude XYZ tristimulus of (X)b,Yb,Zb) The full width of white XYZ tristimulus value is (X)w,Yw,Zw)；
Setting a single pixel to have 4 light sources of red, green, cyan and blue;
calculating the tristimulus value of each pixel of the input video signal by combining the red, green and blue XYZ tristimulus values of the color space of the video signal, and then calculating a group of red, green, blue and cyan 4 color light source intensity values with the minimum blue light source intensity by combining the tristimulus values of the red, green, blue and cyan 4 light sources;
and controlling the driving circuit to output the red, green, blue and green mixed color output with different proportions.
Preferably, the calculating the tristimulus value of each pixel of the input video signal according to the rgb XYZ tristimulus value of the color space of the video signal, and then calculating a set of rgb 4 light source intensity values with the minimum blue light source intensity according to the tristimulus values of the rgb 4 light sources, includes the following steps:
converting the nonlinear RGB color space of the input pixel into a linear R ' G ' B ' color space after gamma conversion;
then multiplying by a three-stimulus value matrix of red, green and blue in a video color space to obtain an XYZ color space value; the calculation formula is:
in the above formula, the full XYZ tristimulus values of red are (Xr, Yr, Zr), the full XYZ tristimulus values of green are (Xg, Yg, Zg), the full XYZ tristimulus values of blue are (Xb, Yb, Zb), the full XYZ tristimulus values of white are (Xw, Yw, Zw), R ' G ' B ' is the linear values of the red, green and blue spaces of the pixel, XYZrgbIs a red, green and blue tristimulus value of a video color space, and X ' Y ' Z ' is a pixel XYZ space linear value;
calculating coordinates x and y of a CIE chromaticity diagram of the pixel; the calculation formula is:
the meaning of the above English letters is described above, specifically, X and Y are CIE chromaticity diagram coordinates of pixels, and X ' Y ' Z ' is XYZ spatial linear values of pixels;
when the pixel color coordinates x and y fall in a red, green and blue light source triangle RGC in a CIE chromaticity diagram (as shown in FIG. 2), the color is decomposed into three colors of red, green and blue for calculation to obtain a red, green and blue light source intensity value Rl’Gl’Cl', blue light source intensity value Bl' is 0;
the calculation formula is:
Bl′＝0
english letters have the same meanings as the above explanations;
when the pixel color coordinates x and y fall in a red, green and blue light source triangle RCB in a CIE chromaticity diagram, respectively calculating a first group of values and a second group of values; the first set of values: decomposing into red, green and blue to obtain red, green and blue light source intensity value Rl0’Gl0’Bl0'; the second set of values: decomposing into red, green and blue to obtain red, green and blue light sourcesIntensity value Rl1’Cl1’Bl1’；
Comparing the intensity values of the blue light sources in the first group and the second group, and selecting a group of values with smaller intensity values of the blue light sources to obtain a final linear red-green-blue-green light source intensity value Rl’Gl’Bl’Cl’；
The calculation formula is as follows:
if B is0’<B1', then
(R′ G′ B′ C′)＝(Rl0′ Gl0′ Bl0′ 0)
Otherwise
(R′ G′ B′ C′)＝(Rl1′ 0 Bl1′ Cl1′)。
An embodiment of the present invention further provides a device for displaying a four-color low-blue light wide color gamut, where the device for displaying a four-color low-blue light wide color gamut includes:
an input module for inputting 4 points of red, green, blue and white of a target color space of a video signal, wherein full XYZ tristimulus values of red are (Xr, Yr, Zr), full XYZ tristimulus values of green are (Xg, Yg, Zg), full XYZ tristimulus values of blue are (Xb, Yb, Zb), full XYZ tristimulus values of white are (Xw, Yw, Zw);
the setting module is used for setting a single pixel to be provided with 4 light sources of red, green, cyan and blue;
the conversion module is used for converting the pixel color of the input video signal into a CIE XYZ color space;
the selection module is used for selecting the color coordinate of the cyan light;
the calculating module is used for calculating the tristimulus value of each pixel of the input video signal by combining the red, green and blue XYZ tristimulus values of the color space of the video signal with the red, green and blue value of each pixel of the input video signal; then, calculating a group of red, green, blue and green 4 color light source intensity values with the minimum blue light source intensity by combining tristimulus values of the red, green, blue and green 4 light sources;
the control module 5 is used for controlling the driving circuit to output red, green, blue and green mixed color output with different proportions;
the transceiver module 6 is used for receiving and sending control data and calculating data.
An embodiment of the application of the present invention further provides a system for four-color low-blue light wide color gamut display, and the system for four-color low-blue light wide color gamut display includes the method for four-color low-blue light wide color gamut display according to any embodiment of the application of the present invention.
An embodiment of the present application further provides a storage medium having a computer program stored thereon, where the computer program, when executed by a processor, implements the method for four-color low-blue wide color gamut display according to any of the embodiments of the present application.
The invention solves the technical problem that blue light with lower wavelength of an LED display screen is harmful to human eyes, particularly when the LED display screen displays white with high brightness, the proportion of the low-wavelength blue light of an electronic display is larger than that of the low-wavelength blue light in natural light, and has the advantages of not causing picture color cast, ensuring the lowest proportion of harmful blue light with low wavelength under the condition of ensuring correct display color, enabling the LED display screen to be more comfortable to watch, enabling the LED display screen to realize more vivid and vivid high-definition display effect and greatly improving the display quality of the LED display screen. The technical scheme provided by the invention can be applied to the field of ultra-high-definition display of the high-definition LED display screen.
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FIG. 1 is a flowchart illustrating a method for displaying a four-color low-blue light wide color gamut according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of selecting cyan coordinates of red, green, blue and 3 colors in CIE XYZ color space according to an embodiment of the present invention;
fig. 3 is a flowchart of a step of calculating a tristimulus value of each pixel of an input video signal according to rgb values of each pixel of the input video signal and XYZ tristimulus values of a color space of the video signal in an embodiment of the present invention:
fig. 4 is a schematic diagram of a four-color low-blue wide color gamut display device according to an embodiment of the present invention.
The numbers in fig. 2: white point 12, red point 11, green point 14, blue point 15, cyan point 13.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, fig. 1 is a flowchart of a four-color low-blue light wide color gamut display method according to an embodiment of the present invention; the method comprises the following steps:
step S110, inputting red, green, blue and white 4 points of a target color space of the video signal, wherein the full amplitude XYZ tristimulus value of red is (X)r,Yr,Zr) The full amplitude XYZ tristimulus value of green is (X)g,Yg,Zg) Blue full amplitude XYZ tristimulus of (X)b,Yb,Zb) The full width of white XYZ tristimulus value is (X)w,Yw,Zw)；
Step S120, setting a single pixel to have 4 light sources of red, green, cyan and blue;
as shown in fig. 2, in the CIE xy chromaticity diagram, a triangle formed by the color coordinates of the red, green and blue light sources needs to cover the target color of the input videoThe color coordinates of a cyan light source are required to be positioned near the lower part of a connecting line extension line of red and white points in a video signal target color space; thus, red, green and cyan three-color light sources can be used instead of the blue light source to mix into white in the target color space of the video signal; wherein the full XYZ tristimulus value of the red light source is (X)rl,Yrl,Zrl) The full XYZ tristimulus value of the green light source is (X)gl,Ygl,Zgl) The full amplitude XYZ tristimulus of the blue light source is (X)bl,Ybl,Zbl) The full XYZ tristimulus value of the cyan light source is (X)cl,Ycl,Zcl)；
Specifically, as shown in fig. 2, it is assumed that the color of red, green, and blue 3 is represented in the CIE XYZ color space coordinate system shown in fig. 2, and the white point 12 is located in a triangle formed by the red point 11, the green point 14, and the blue point 15; in the vicinity of the lower part of the boundary between the extended line of the red point 11 and the white point 12 and the horseshoe-shaped spectral line, one point is selected as cyan 13 in 4-color display.
Step S130, calculating the tristimulus value of each pixel of the input video signal according to the RGB XYZ tristimulus value of the color space of the video signal, and then calculating a group of RGB 4 light source intensity values with the minimum blue light source intensity according to the tristimulus values of the RGB 4 light sources;
step S140, controlling the driving circuit to output the red, green, blue and green mixed color output with different proportions.
Referring to fig. 3, fig. 3 is a flowchart illustrating the steps of calculating the tristimulus value of each pixel of the input video signal according to the rgb value of each pixel of the input video signal and the tristimulus values of the rgb XYZ color space of the video signal in step S130, and then calculating a set of rgb 4 light source intensity values with the minimum blue light source intensity according to the tristimulus values of the rgb 4 light sources in step S130 of the present application, including the following steps:
step 13010, converting the input non-linear RGB color space of the pixel into a linear R ' G ' B ' color space after gamma conversion;
step 13020, multiplying by a three-color tri-stimulus value matrix of red, green and blue of a video color space to obtain an XYZ color space value; the calculation formula is:
the above-mentioned english alphabets have meanings described above, and specifically, in the above formula, the full XYZ tristimulus values of red are (Xr, Yr, Zr), the full XYZ tristimulus values of green are (Xg, Yg, Zg), the full XYZ tristimulus values of blue are (Xb, Yb, Zb), the full XYZ tristimulus values of white are (Xw, Yw, Zw), R ' G ' B ' is the spatial linear values of red, green and blue of the pixel, XYZrgbIs the red, green and blue tristimulus values of the video color space, and X ' Y ' Z ' is the pixel XYZ space linear value.
Step S13030, calculating coordinates x and y of a pixel CIE chromaticity diagram; the calculation formula is:
the meaning of the above English letters is described above, specifically, X and Y are CIE chromaticity diagram coordinates of pixels, and X ' Y ' Z ' is XYZ spatial linear values of pixels;
step 13040, when the pixel color coordinates x and y fall within the red, green and blue light source triangle RGC in the CIE chromaticity diagram (as shown in fig. 2), the color is decomposed into three colors of red, green and blue for calculation to obtain the red, green and blue light source intensity value Rl’Gl’Cl', blue light source intensity value Bl' is 0; the calculation formula is:
Bl′＝0
english letters have the same meanings as the above explanations;
step 13050, when the pixel color coordinates x and y fall within a red, green and blue light source triangle RCB in the CIE chromaticity diagram, respectively calculating a first set of values and a second set of values;
specifically, the first set of values: decomposing into red, green and blue to obtain red, green and blue light source intensity value Rl0’Gl0’Bl0'; the second set of values: decomposing into red, green and blue to obtain red, green and blue light source intensity value Rl1’Cl1’Bl1’；
Step S13060, comparing the blue light source intensity values in the first group and the second group, and selecting a group of values with smaller blue light source intensity value to obtain the final linear red, green, blue and green light source intensity value Rl’Gl’Bl’Cl’；
The calculation formula is as follows:
if B is0’<B1', then
(R′ G′ B′ C′)＝(Rl0′ Gl0′ Bl0′ 0)
Otherwise
(R′ G′ B′ C′)＝(Rl1′ 0 Bl1′ Cl1′)。
Referring to fig. 4, fig. 4 is a schematic diagram of a device for displaying a four-color low-blue light wide color gamut according to an embodiment of the present invention, the device including:
the control unit of the four-color low-blue wide color gamut display device includes:
an input module 7, configured to input 4 points of red, green, blue and white of a target color space of a video signal, where a full XYZ tristimulus value of red is (Xr, Yr, Zr), a full XYZ tristimulus value of green is (Xg, Yg, Zg), a full XYZ tristimulus value of blue is (Xb, Yb, Zb), and a full XYZ tristimulus value of white is (Xw, Yw, Zw);
the setting module 1 is used for setting a single pixel to have 4 light sources of red, green, cyan and blue;
the conversion module 2 is used for converting the pixel color of the input video signal into a CIE XYZ color space;
the selection module 3 is used for selecting the color coordinate of the cyan light;
specifically, assuming that the coordinates of red, green and blue 3 are shown in fig. 2 in the CIE XYZ color space, a point is selected near the lower part of the boundary between the extension line of the red point and the white point and the horseshoe-shaped spectral line, and the point is used as cyan in 4-color display;
the calculating module 4 is used for calculating the tristimulus value of each pixel of the input video signal by combining the red, green and blue values of each pixel of the input video signal with the XYZ tristimulus values of the red, green and blue of the color space of the video signal; then, calculating a group of red, green, blue and green 4 color light source intensity values with the minimum blue light source intensity by combining tristimulus values of the red, green, blue and green 4 light sources;
the control module 5 is used for controlling the driving circuit to output red, green, blue and green mixed color output with different proportions;
the transceiver module 6 is used for receiving and sending control data and calculating data;
the above modules of this embodiment are placed in a processor, which includes a local central processing unit, or a cloud processor.
An embodiment of the present invention further provides a system for four-color low-blue wide color gamut display, where the system for four-color low-blue wide color gamut display includes: the invention relates to a device for displaying four-color low-blue light wide color gamut.
Embodiments of the present application further provide an electronic device comprising a processor and a machine-readable storage medium storing machine-executable instructions executable by the processor, the processor-executable instructions, when invoked and executed by the processor, causing the processor to: the method for displaying the four-color low-blue light wide color gamut in any embodiment of the invention is realized.
An embodiment of the present invention further provides a storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the method for four-color low-blue wide color gamut display according to any of the above embodiments.
The system/computer device integrated components/modules/units, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the above embodiments may be implemented by a computer program, which may be stored in a computer readable storage medium and used by a processor to implement the steps of the above method embodiments. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The invention is not the best known technology.
In the several embodiments provided in the present invention, it should be understood that the disclosed system and method may be implemented in other ways. For example, the system embodiments described above are merely illustrative, and for example, the division of the components is only one logical division, and other divisions may be realized in practice.
In addition, each functional module/component in each embodiment of the present invention may be integrated into the same processing module/component, or each module/component may exist alone physically, or two or more modules/components may be integrated into the same module/component. The integrated modules/components can be implemented in the form of hardware, or can be implemented in the form of hardware plus software functional modules/components.
It will be evident to those skilled in the art that the embodiments of the present invention are not limited to the details of the foregoing illustrative embodiments, and that the embodiments of the present invention are capable of being embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, apparatus or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. A method for four-color low-blue wide color gamut display, comprising:
red, green, blue and white 4 points of a target color space of an input video signal, where the full amplitude of red XYZ tristimulus values is (X)r,Yr,Zr) The full amplitude XYZ tristimulus value of green is (X)g,Yg,Zg) Blue full amplitude XYZ tristimulus of (X)b,Yb,Zb) The full width of white XYZ tristimulus value is (X)w,Yw,Zw)；
Setting a single pixel to have 4 light sources of red, green, cyan and blue;
calculating the tristimulus value of each pixel of the input video signal by combining the red, green and blue XYZ tristimulus values of the color space of the video signal, and then calculating a group of red, green, blue and cyan 4 color light source intensity values with the minimum blue light source intensity by combining the tristimulus values of the red, green, blue and cyan 4 light sources; the method comprises the following specific steps:
converting the nonlinear RGB color space of the input pixel into a linear R ' G ' B ' color space after gamma conversion;
then multiplying by a three-stimulus value matrix of red, green and blue in a video color space to obtain an XYZ color space value; the calculation formula is:
in the above formula, the full XYZ tristimulus values of red are (Xr, Yr, Zr), the full XYZ tristimulus values of green are (Xg, Yg, Zg), the full XYZ tristimulus values of blue are (Xb, Yb, Zb), the full XYZ tristimulus values of white are (Xw, Yw, Zw), R ' G ' B ' is the linear values of the red, green and blue spaces of the pixel, XYZrgbIs a red, green and blue tristimulus value of a video color space, and X ' Y ' Z ' is a pixel XYZ space linear value;
calculating coordinates x and y of a CIE chromaticity diagram of the pixel; the calculation formula is:
in the above formula, X and Y are coordinates of a CIE chromaticity diagram of the pixel, and X ' Y ' Z ' is a spatial linear value of XYZ of the pixel;
when the pixel color coordinates x and y fall in a CIE chromaticity diagram and a red green blue light source triangle RGC, the color is decomposed into three colors of red, green and blue for calculation to obtain a red green blue light source intensity value Rl’Gl’Cl', blue light source intensity value Bl' is 0;
the calculation formula is:
Bl'＝0
when the pixel color coordinates x and y fall in a red, green and blue light source triangle RCB in a CIE chromaticity diagram, respectively calculating a first group of values and a second group of values; the first set of values: decomposing into red, green and blue to obtain red, green and blue light source intensity value Rl0’ Gl0’ Bl0'; the second set of values: decomposing into red, green and blue to obtain red, green and blue light source intensity value Rl1’ Cl1’ Bl1’；
Comparing the intensity values of the blue light sources in the first group and the second group, and selecting a group of values with smaller intensity values of the blue light sources to obtain a final linear red-green-blue-green light source intensity value Rl’Gl’Bl’Cl’；
The calculation formula is as follows:
if B is0’<B1', then
(R′ G′ B′ C′)＝(Rl0′ Gl0′ Bl0′ 0)
Otherwise
(R′ G′ B′ C′)＝(Rl1′ 0 Bl1′ Cl1′)
And controlling the driving circuit to output the red, green, blue and green mixed color output with different proportions.
2. A four-color low-blue wide color gamut display apparatus, for implementing the four-color low-blue wide color gamut display method of claim 1, the four-color low-blue wide color gamut display apparatus comprising:
an input module for inputting 4 points of red, green, blue and white of a target color space of a video signal, wherein full XYZ tristimulus values of red are (Xr, Yr, Zr), full XYZ tristimulus values of green are (Xg, Yg, Zg), full XYZ tristimulus values of blue are (Xb, Yb, Zb), full XYZ tristimulus values of white are (Xw, Yw, Zw);
the setting module is used for setting a single pixel to be provided with 4 light sources of red, green, cyan and blue;
the conversion module is used for converting the pixel color of the input video signal into a CIE XYZ color space;
the selection module is used for selecting the color coordinate of the cyan light;
the calculating module is used for calculating the tristimulus value of each pixel of the input video signal by combining the red, green and blue XYZ tristimulus values of the color space of the video signal with the red, green and blue value of each pixel of the input video signal; then, calculating a group of red, green, blue and green 4 color light source intensity values with the minimum blue light source intensity by combining tristimulus values of the red, green, blue and green 4 light sources;
the control module is used for controlling the driving circuit to output red, green, blue and green mixed color output in different proportions;
and the transceiver module is used for receiving and sending the control data and the calculation data.
3. A system for four-color low-blue wide color gamut display, characterized in that the system for four-color low-blue wide color gamut display is used to implement the method for four-color low-blue wide color gamut display according to claim 1.
4. A storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, is operative to implement the method of four-color low-blue wide color gamut display of claim 1.
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| CN202010860392.4A CN111862888B (en) | 2020-08-25 | 2020-08-25 | Four-color low-blue-light wide-color-gamut display method, device, system and storage medium |
| PCT/CN2020/130500 WO2022041512A1 (en) | 2020-08-25 | 2020-11-20 | Four-color low-blue-light wide-color-gamut display method, apparatus and system |
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| CN202010860392.4A CN111862888B (en) | 2020-08-25 | 2020-08-25 | Four-color low-blue-light wide-color-gamut display method, device, system and storage medium |
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| CN112632790B (en) * | 2020-12-29 | 2021-12-21 | 愉悦家纺有限公司 | Construction application of multi-dimensional coupling-superposition composite color mixing model and gradient chromatography matrix algorithm |
| CN115691404B (en) * | 2022-10-31 | 2024-07-12 | 东莞阿尔泰显示技术有限公司 | Display method of multi-color-domain mode LED display screen |
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| KR20040085470A (en) * | 2003-03-31 | 2004-10-08 | 삼성전자주식회사 | Color conversion apparatus and color conversion method |
| US7598961B2 (en) * | 2003-10-21 | 2009-10-06 | Samsung Electronics Co., Ltd. | method and apparatus for converting from a source color space to a target color space |
| WO2005050296A1 (en) * | 2003-11-20 | 2005-06-02 | Samsung Electronics Co., Ltd. | Apparatus and method of converting image signal for six color display device, and six color display device having optimum subpixel arrangement |
| CN100543804C (en) * | 2007-09-26 | 2009-09-23 | 友达光电股份有限公司 | Multi-primary color display device and color filter |
| CN100504969C (en) * | 2007-10-12 | 2009-06-24 | 友达光电股份有限公司 | Display device with multiple primary colors and method for manufacturing the same |
| CN101350171B (en) * | 2008-09-12 | 2012-01-25 | 友达光电股份有限公司 | A method for displaying colors on a four-color display |
| EP2503784A4 (en) * | 2009-11-20 | 2013-04-24 | Sharp Kk | IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD |
| KR101097325B1 (en) * | 2009-12-31 | 2011-12-23 | 삼성모바일디스플레이주식회사 | A pixel circuit and a organic electro-luminescent display apparatus |
| CN102770906B (en) * | 2010-02-26 | 2015-02-25 | 夏普株式会社 | Image display device and image display method |
| JP5663063B2 (en) * | 2012-07-20 | 2015-02-04 | シャープ株式会社 | Display device |
| WO2014038517A1 (en) * | 2012-09-07 | 2014-03-13 | シャープ株式会社 | Multiple-primary color display device |
| US10401683B2 (en) * | 2015-01-14 | 2019-09-03 | Soraa, Inc. | Low blue light displays |
| CN109982478B (en) * | 2019-01-31 | 2022-04-05 | 北京大学 | Dimming Method of White Light Emitting Diode |
| CN111862888B (en) * | 2020-08-25 | 2021-10-26 | 深圳市奥拓电子股份有限公司 | Four-color low-blue-light wide-color-gamut display method, device, system and storage medium |
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