CN101123050A - Multiple primitive color display device and colorful filtering slice - Google Patents

Multiple primitive color display device and colorful filtering slice Download PDF

Info

Publication number
CN101123050A
CN101123050A CNA2007101543611A CN200710154361A CN101123050A CN 101123050 A CN101123050 A CN 101123050A CN A2007101543611 A CNA2007101543611 A CN A2007101543611A CN 200710154361 A CN200710154361 A CN 200710154361A CN 101123050 A CN101123050 A CN 101123050A
Authority
CN
China
Prior art keywords
vertex
primary color
equal
color
contrast value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2007101543611A
Other languages
Chinese (zh)
Other versions
CN100543804C (en
Inventor
詹志诚
魏国峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AU Optronics Corp
Original Assignee
AU Optronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AU Optronics Corp filed Critical AU Optronics Corp
Priority to CNB2007101543611A priority Critical patent/CN100543804C/en
Publication of CN101123050A publication Critical patent/CN101123050A/en
Application granted granted Critical
Publication of CN100543804C publication Critical patent/CN100543804C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention provides a multi primary color display device and a color optical filter. A simulation method is used for acquiring a certain range, and only when the ratio between each pair of primary colors meets the certain range that dark state white balance can be achieved when the chroma values of the primary colors are confined within a certain chroma range in the chroma diagram (e. g. CIE1931 chroma diagram). The invention can not only effectively display natural colors, but reduce color shift in low-brightness images.

Description

Multi-primary color display device and color filter
Technical Field
The present invention relates to a display device, and in particular to a multi-primary display.
Background
With the development of technology, the color performance of the display is more and more demanding, and the display is expected to present richer and saturated colors. A typical display typically displays color using only a mix of three primary colors (e.g., red, green, and blue primary colors). However, such a three primary color display cannot completely represent all colors of the nature, especially sky blue and golden yellow. In the prior art, the conventional solution is to increase the saturation of the three primary colors to enlarge the gamut space which can be displayed. However, this approach has limited success and may suffer from drawbacks such as reduced display brightness due to the characteristics of the display itself. Another solution is to add at least one new primary color different from red, green and blue to the conventional trichromatic display, and the added new primary color falls outside the triangular color gamut space surrounded by the red, green and blue primary colors on the CIE1931 chromaticity diagram. Therefore, the color gamut space of the display can be effectively increased, and the display can maintain or even enhance the brightness performance of the display.
Disclosure of Invention
To overcome the disadvantages of the prior art, according to one embodiment of the present invention, a display device is provided. The display device comprises a plurality of pixels, and each pixel is provided with more than four sub-pixels. These sub-pixels display the red, green, blue and yellow primary colors, respectively, and the yellow color falls within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
Vertex 1 0.53 0.44
Vertex two 0.544 0.454
Vertex three 0.408 0.589
Vertex four 0.39 0.556
Moreover, the ratio of the contrast values of the plurality of primary colors is:
the contrast value of the xanthic color/the contrast value of the red primary color is more than or equal to 0.58 and less than or equal to 2.4;
the xanthic contrast value/green primary color contrast value is more than or equal to 0.39 and less than or equal to 2.4; and
the xanthic color contrast value/blue primary color contrast value is more than or equal to 0.58 and less than or equal to 1.78.
The display device as described above, wherein one of the four or more sub-pixels displays a cyan primary color, and the cyan primary color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
Vertex one 0.165 0.408
Vertex two 0.142 0.165
Vertex three 0.104 0.141
Vertex four 0.106 0.396
And the contrast ratio of the plurality of primary colors is as follows:
the green primary color contrast value/the red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value is more than or equal to 0.28/the green primary color contrast value is less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
The display device as described above, wherein the red primary color, the green primary color and the blue primary color respectively fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
First multiple sides Region of shape Vertex 1 0.64 0.29
Vertex two 0.691 0.308
Vertex three 0.648 0.351
Vertex four 0.64 0.34
Second multiple side Vertex 1 0.32 0.587
Region of shape Vertex two 0.2 0.535
Vertex three 0.21 0.71
Third polygon Shaped area Vertex one 0.19 0.072
Vertex two 0.162 0.04
Vertex three 0.104 0.141
Vertex four 0.142 0.165
According to another embodiment of the present invention, a display device is provided. The display device comprises a plurality of pixels, and each pixel is provided with more than four sub-pixels. These sub-pixels display the red, green, blue and cyan primaries, respectively, and the cyan primary falls within the following polygonal regions in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
Vertex one 0.165 0.408
Vertex two 0.142 0.165
Vertex three 0.104 0.141
Vertex four 0.106 0.396
Moreover, the ratio of the contrast values of the plurality of primary colors is:
the green primary color contrast value/red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value/green primary color contrast value is more than or equal to 0.28 and less than or equal to 4.86; and
the green primary color contrast value/blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
The display device as described above, wherein the red primary color, the green primary color and the blue primary color respectively fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate
First multiple sides Vertex 1 0.64 0.29
Region of shape Vertex two 0.691 0.308
Vertex three 0.648 0.351
Vertex four 0.64 0.34
Second polygon Shaped area Vertex 1 0.32 0.587
Vertex two 0.2 0.535
Vertex three 0.21 0.71
Third polygon Region of shape Vertex one 0.19 0.072
Vertex two 0.162 0.04
Vertex three 0.104 0.141
Vertex four 0.142 0.165
According to another embodiment of the present invention, a color filter for a flat panel display is provided. The color filter comprises a plurality of color filter units, wherein the plurality of color filter units respectively generate a primary red color, a primary green color, a primary blue color and a primary xanthic color, and the xanthic color falls in the following polygonal areas in a CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
Vertex one 0.53 0.44
Vertex two 0.544 0.454
Vertex three 0.408 0.589
Vertex four 0.39 0.556
Moreover, the ratio of the contrast values of the plurality of primary colors is:
the contrast value of the xanthic color/the contrast value of the red primary color is more than or equal to 0.58 and less than or equal to 2.4;
the xanthic contrast value/green primary color contrast value is more than or equal to 0.39 and less than or equal to 2.4; and
the xanthic color contrast value/blue primary color contrast value is more than or equal to 0.58 and less than or equal to 1.78.
The color filter of the flat panel display as described above, wherein one of the plurality of color filter units generates a cyan primary color, and the cyan primary color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate
Vertex one 0.165 0.408
Vertex two 0.142 0.165
Vertex three 0.104 0.141
Vertex four 0.106 0.396
And the contrast ratio of the plurality of primary colors is as follows:
the green primary color contrast value/the red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the cyan primary color contrast value/the green primary color contrast value is more than or equal to 0.28 and less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
The color filter of the flat panel display as described above, wherein the primary color of red, the primary color of green and the primary color of blue respectively fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate
First polygon Shaped area Vertex 1 0.64 0.29
Vertex two 0.691 0.308
Vertex three 0.648 0.351
Vertex four 0.64 0.34
Second polygon Shaped area Vertex one 0.32 0.587
Vertex two 0.2 0.535
Vertex three 0.21 0.71
Third stepMultilateral Shaped area Vertex one 0.19 0.072
Vertex two 0.162 0.04
Vertex three 0.104 0.141
Vertex four 0.142 0.165
According to another embodiment of the present invention, a color filter for a flat panel display is provided. The color filter comprises a plurality of color filter units, wherein the plurality of color filter units respectively generate a red primary color, a green primary color, a blue primary color and a cyan primary color, and the cyan primary color falls in the following polygonal areas in a CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
Vertex one 0.165 0.408
Vertex two 0.142 0.165
Vertex three 0.104 0.141
Vertex four 0.106 0.396
Moreover, the ratio of the contrast values of the plurality of primary colors is:
the green primary color contrast value/red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value/green primary color contrast value is more than or equal to 0.28 and less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
The color filter of the flat panel display as described above, wherein the primary color of red, the primary color of green and the primary color of blue fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
First polygon Region of shape Vertex one 0.64 0.29
Vertex two 0.691 0.308
Vertex three 0.648 0.351
Vertex four 0.64 0.34
Second polygon Shaped area Vertex one 0.32 0.587
Vertex two 0.2 0.535
Vertex three 0.21 0.71
Third polygon Shaped area Vertex one 0.19 0.072
Vertex two 0.162 0.04
Vertex three 0.104 0.141
Vertex four 0.142 0.165
The multi-primary color display device and the color filter can effectively display natural colors and reduce color cast phenomenon in low-brightness pictures.
Drawings
The foregoing and other objects, features, advantages and embodiments of the invention will be more readily understood from the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 shows a schematic diagram of a display device according to an embodiment of the invention;
FIG. 2 shows a color filter of a flat panel display according to another embodiment of the present invention;
FIG. 3 shows a CIE1931 chromaticity diagram of a first embodiment of the invention;
FIG. 4 shows a CIE1931 chromaticity diagram of a second embodiment of the invention;
FIG. 5 shows a CIE1931 chromaticity diagram of a third embodiment of the invention;
FIG. 6 shows a CIE1931 chromaticity diagram of a fourth embodiment of the invention;
FIG. 7 shows a CIE1931 chromaticity diagram of a fifth embodiment of the invention;
FIG. 8 shows a CIE1931 chromaticity diagram of a sixth embodiment of the invention;
FIG. 9 shows a CIE1931 chromaticity diagram of a seventh embodiment of the invention;
FIG. 10 shows a CIE1931 chromaticity diagram of an eighth embodiment of the invention;
FIG. 11 shows a CIE1931 chromaticity diagram of a ninth embodiment of the invention; and
fig. 12 shows a CIE1931 chromaticity diagram of a tenth embodiment of the invention.
Wherein the reference numerals are as follows:
100: the display device 102: pixel
112: sub-pixel
200: the flat panel display 210: color filter
212: the color filter unit 220: display unit
302. 304, 306, 308, 310, 312: polygonal area
402. 404, 406, 408, 410, 412: polygonal area
502. 504, 506, 508, 510, 512: polygonal area
602. 604, 606, 608, 610, 612: polygonal area
702. 704, 706, 708, 710, 712: polygonal area
802. 804, 806, 808, 810, 812: polygonal area
902. 904, 906, 908, 910, 912: polygonal area
1002. 1004, 1006, 1008, 1010, 1012: polygonal area
1102. 1104, 1106, 1108, 1110, 1112: polygonal area
1202. 1204, 1206, 1208, 1210, 1212: polygonal area
Detailed Description
In the additive color mixing system of three primary colors, if the signal amounts of the three primary colors of red (R), green (G), and blue (B) are given, the tristimulus values (X, Y, Z) of the colors mixed with the three primary colors can be calculated by equation (1):
X i ，Y i ，Z i : i tristimulus value when primary color semaphore is maximum;
r, G, B: the primary color signal amounts (0 to 1).
When the amounts of signals input by the three primary colors are the largest, that is, R = G = B =1, the tristimulus values (X) of white balance can be obtained W ，Y W ，Z W ) As shown in equation (2):
Figure A20071015436100152
similarly, in a four primary additive color mixing system, for example, a new primary (V) is added, and equation (3) can be obtained as follows to calculate the tristimulus values (X, Y, Z) of the color mixed by the four primaries:
Figure A20071015436100161
if the chromaticity value (X, Y) and luminance (i.e., Y in the tristimulus values) of a primary color are known, X and Z in the tristimulus values of the primary color can be represented using equation (4):
Figure A20071015436100163
therefore, equation (3) can be converted to according to equation (4):
Figure A20071015436100164
if the tristimulus values of the blue primary (B) and the new primary (V) are shifted to the left of the equal sign, and are mathematically operated, the following equations (6), (7), and (8) can be obtained:
Figure A20071015436100165
Figure A20071015436100166
Figure A20071015436100167
Figure A20071015436100168
Figure A20071015436100169
therefore, if the chromaticity values (x, Y) of the primary colors and the white balance are known, and the appropriate luminance (Y- - R -and Y G ) The white balance, blue and new primary colors can be obtained by the above equation (8)Luminance (Y) of W ，Y B And Y v )。
The embodiment of the invention uses a simulation method to obtain that when the chromaticity value of the multiple primary colors is limited in a certain chromaticity range on a chromaticity diagram (such as CIE1931 chromaticity diagram), the contrast ratio among the primary colors can reach the dark state white balance only when the contrast ratio accords with the certain range, so that the natural color can be effectively displayed, and the color cast phenomenon in a low-brightness image can be reduced.
The simulation steps used in these examples are as follows:
1. firstly, the chromaticity ranges of the primary colors of red, green and blue and other two new primary colors (namely cyan and xanthate) are set, and the principle is to surround the colors in the nature. The chromaticity ranges set for the primary colors are shown in table 1:
x axis coordinate Y axis coordinate
More primary color of red Edge-shaped area Vertex one 0.64 0.29
Vertex two 0.691 0.308
Vertex three 0.648 0.351
Vertex four 0.64 0.34
Green more primary color Edge-shaped area Vertex 1 0.32 0.587
Vertex two 0.2 0.535
Vertex three 0.21 0.71
Blue primary color Edge-shaped area Vertex one 0.19 0.072
Vertex two 0.162 0.04
Vertex three 0.104 0.141
Vertex four 0.142 0.165
Many primary colors Edge-shaped area Vertex one 0.165 0.408
Vertex two 0.142 0.165
Vertex three 0.104 0.141
Vertex four 0.106 0.396
Xanthogen compounds Edge-shaped area Vertex one 0.53 0.44
Vertex two 0.544 0.454
Vertex three 0.408 0.589
Vertex four 0.39 0.556
Table 1: chromaticity range set by each primary color
2. A set of multi-primary combinations is selected from the chromaticity ranges of table 1, wherein the set of multi-primary combinations includes chromaticity values of three primary primaries and at least one new primary. In more detail, the chromaticity values near the corners of the chromaticity ranges of three primary colors (i.e., red, green, and blue primaries) and one or more new primary colors (i.e., cyan and xanthate) are selected from the chromaticity ranges, and the maximum luminance value (i.e., Y in the tristimulus values) of the chromaticity values is set appropriately, so that the multi-primary combination can achieve white balance when the amount of each primary signal is equal to 1. In this way, the chromaticity values (x, Y) and the maximum luminance value (Y) of the primary colors in the set of multi-primary color combinations are obtained when the signal amount is equal to 1.
3. According to the existing experimental data, when the signal amount of a primary color is zero (i.e., in the darkest state), the chromaticity value of the primary color is approximately blue by 0.05 chromaticity values compared with the chromaticity value of the brightest primary color. Therefore, the chromaticity value of each primary color at the lightest brightness is reduced by 0.05, and the chromaticity value of each primary color at the darkest brightness can be obtained.
4. According to the current technological capability, the lowest contrast value among the three primary colors is the red primary color (R), and the contrast values (CR) of the other two primary colors (i.e. green and blue primary colors) G 、CR B ) About 1 to 1.5 times the primary color of red. Therefore, it can be assumed that the red contrast value is CR R And the contrast ratio of the green primary color to the red primary color is: CR G /CR R ＝1～1.5。
5. At this time, based on the contrast values set for the red and green primaries and the respective brightnesses of the red and green primaries obtained in step 2 when the brightness is brightest, the brightnesses of the red and green primaries when the brightness is darkest can be obtained as Y R And Y G 。
6. The chromaticity value (x, Y) of each primary color when the brightness is darkest, and the brightness Y of the red and green primary colors when the brightness is darkest R And Y G And the set white balance chromaticity value (e.g., (0.28, 0.29)) is substituted into equation (8), one can obtainBrightness Y of blue primary color (B) and new primary color (V) at darkest brightness B And Y V . Since the brightness of the blue primary color (B) and the new primary color (V) is known when the brightness is brightest, the contrast values of the blue primary color (B) and the new primary color (V) can be obtained, and the proportional relationship of the contrast values between the primary colors, i.e., CR, can be calculated V /CR R 、CR V /CR G And CR V /CR B 。
According to the simulation steps, it can be known that when the chromaticity of each primary color is normalized within a specific chromaticity range, the contrast ratio between the primary colors needs to fall within the specific range to achieve the dark-state white balance, so that the natural color can be effectively displayed, and the color cast phenomenon in the low-brightness image is reduced.
Fig. 1 shows a schematic diagram of a display device 100 according to an embodiment of the invention. The display device 100 includes a plurality of pixels 102, each pixel 102 having more than four sub-pixels 112, wherein the sub-pixels 112 respectively display a red primary color (R), a green primary color (G), a blue primary color (B), and at least one new primary color (V). For example, the display device 100 may be a flat panel display, such as: a self-luminous display device (such as an OLED display or the like) or a display device requiring a backlight (such as a liquid crystal display or the like).
Fig. 2 shows a color filter 210 of a flat panel display 200 according to another embodiment of the present invention. The color filter 210 includes a plurality of color filter units 212, wherein the plurality of color filter units 212 respectively generate a primary color (R), a primary color (G), a primary color (B) and at least one new primary color (V). The color filter 210 may be disposed in the flat panel display 200. For example, when the flat panel display 200 is a liquid crystal display, the display unit 220 includes a backlight source and liquid crystal pixel elements, and can be used with the color filter 210 to display a color image.
The following ten embodiments illustrate the multi-primary color combinations applied in the sub-pixel of fig. 1 or the color filter unit of fig. 2, wherein the primary colors are related by the normalized chromaticity range and the ratio of the contrast ratio between the primary colors.
First embodiment：
Fig. 3 shows a CIE1931 chromaticity diagram of the first embodiment of the invention, wherein the polygonal areas 302, 304, 306, 308, 310 are red, green, blue, cyan, and xanthic polygonal areas, respectively, the dots represent colors in nature, and the polygonal area 312 represents a color gamut formed by the multi-primary color combination and the contrast ratio of the primary colors on the CIE1931 chromaticity diagram of the first embodiment.
In the multi-primary color combination of the first embodiment, the chromaticity values of the primary colors of red, green, blue and cyan are selected from the chromaticity ranges in table 1 (as shown in table 2), and the contrast ratio between the primary colors is obtained according to the simulation procedure (as shown in table 3).
X axis coordinate Y axis coordinate
Chromaticity value of red primary color 0.661 0.317
Chromaticity value of green primary color 0.288 0.634
Chromaticity value of blue primary color 0.16 0.09
Chromaticity value of cyan primary color 0.15 0.35
Table 2: chromaticity value of each primary color
Ratio of green/red primary color contrast value Cyan/green primary colorRatio of contrast values Ratio of cyan to blue primary color contrast
0.43 0.29 0.29
Table 3: ratio of contrast values between primary colors
Second embodiment：
Fig. 4 shows a CIE1931 chromaticity diagram of the second embodiment of the invention, wherein the polygonal areas are polygonal areas of the primary colors of red, green, blue, cyan, yellow 402, 404, 406, 408, 410, respectively, the dots represent colors of nature, and the polygonal area 412 is a color gamut formed by the multi-primary color combination of the second embodiment and the contrast ratio of the primary colors on the CIE1931 chromaticity diagram.
In the multi-primary color combination of the second embodiment, the chromaticity values of the primary colors of red, green, blue and cyan are selected from the chromaticity ranges in table 1 (as shown in table 4), and the contrast ratio between the primary colors is obtained according to the simulation procedure (as shown in table 5).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.67 0.31
Chromaticity value of green primary color 0.23 0.63
Chromaticity value of blue primary color 0.17 0.09
Chromaticity value of cyan primary color 0.11 0.2
Table 4: chromaticity value of each primary color
Green/red primary color contrast ratio Ratio of green to green primary color contrast Ratio of cyan to blue primary color contrast
1.51 1.21 1.04
Table 5: ratio of contrast values between primary colors
Third embodiment：
Fig. 5 shows a CIE1931 chromaticity diagram of a third embodiment of the invention, in which the polygonal areas 502, 504, 506, 508, 510 are red, green, blue, cyan, and xanthic polygonal areas, the dots represent colors of nature, and the polygonal area 512 is a color gamut formed by the multi-primary color combination and the contrast ratio between the primary colors of the third embodiment on the CIE1931 chromaticity diagram.
In the multi-primary color combination of the third embodiment, the chromaticity values of the primary colors of red, green, blue and cyan are selected from the chromaticity ranges in table 1 (as shown in table 6), and the contrast ratio between the primary colors is obtained according to the simulation procedure (as shown in table 7).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.65 0.31
Chromaticity value of green primary color 0.28 0.62
Chromaticity value of blue primary color 0.155 0.11
Chromaticity value of cyan primary color 0.13 0.37
Table 6: chromaticity value of each primary color
Ratio of green/red primary color contrast value Ratio of green to green primary color contrast Ratio of cyan to blue primary color contrast
2.92 2.92 2.6
Table 7: ratio of contrast values between primary colors
Fourth embodiment：
Fig. 6 shows a CIE1931 chromaticity diagram of a fourth embodiment of the invention, in which the polygonal areas 602, 604, 606, 608, 610 are red, green, blue, cyan, and xanthic polygonal areas, the dots represent colors of nature, and the polygonal area 612 represents a color gamut formed by the multi-primary color combination and the contrast ratio between the primary colors of the fourth embodiment on the CIE1931 chromaticity diagram.
In the multi-primary color combination of the fourth embodiment, the chromaticity values of the primary colors of red, green, blue and cyan are selected from the chromaticity ranges in table 1 (as shown in table 8), and the contrast ratio between the primary colors is obtained according to the simulation procedure (as shown in table 9).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.67 0.32
Chromaticity value of green primary color 0.27 0.64
Chromaticity value of blue primary color 0.17 0.1
Chromaticity value of cyan primary color 0.15 0.36
Table 8: chromaticity value of each primary color
Green/red primary color contrast ratio Ratio of green/green primary contrast ratio Ratio of cyan to blue primary color contrast
3.73 3.73 3.3
Table 9: ratio of contrast values between primary colors
Fifth embodiment：
Fig. 7 shows a CIE1931 chromaticity diagram of a fifth embodiment of the invention, in which the polygonal areas 702, 704, 706, 708, 710 are red, green, blue, cyan, and xanthic polygonal areas, the dots represent colors of nature, and the polygonal area 712 is a color gamut formed by the multi-primary color combination and the contrast ratio between the primary colors of the fifth embodiment on the CIE1931 chromaticity diagram.
In the multi-primary color combination of the fifth embodiment, the chromaticity values of the primary colors of red, green, blue and cyan are selected from the chromaticity ranges in table 1 (as shown in table 10), and the contrast ratio between the primary colors is obtained according to the simulation procedure (as shown in table 11).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.66 0.31
Chromaticity value of green primary color 0.27 0.62
Chromaticity value of blue primary color 0.155 0.095
Chromaticity value of cyan primary color 0.16 0.37
Table 10: chromaticity value of each primary color
Ratio of green/red primary color contrast value Ratio of green to green primary color contrast Ratio of cyan/blue primary color contrast values
4.8 4.8 4.17
Table 11: ratio of contrast values between primary colors
Sixth embodiment：
Fig. 8 shows a CIE1931 chromaticity diagram of a sixth embodiment of the invention, in which the polygonal areas 802, 804, 806, 808, 810 are red, green, blue, cyan, and xanthic polygonal areas, the dots represent colors of nature, and the polygonal area 812 is a color gamut formed by the multi-primary color combination of the sixth embodiment and the contrast ratio between the primary colors on the CIE1931 chromaticity diagram.
The multi-primary color combination of the sixth embodiment is obtained by selecting chromaticity values of red, green, blue, and xanthic colors from the chromaticity ranges of table 1 (as shown in table 12), and obtaining contrast ratio between the primary colors according to the simulation procedure (as shown in table 13).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.65 0.31
Chromaticity value of green primary color 0.23 0.58
Chromaticity value of blue primary color 0.15 0.09
Colorimetric value of xanthogen 0.44 0.54
Table 12: chromaticity value of each primary color
Yellow/red primary color contrast ratio Yellow/green primary contrast ratio Yellow/blue primary color contrast ratio
0.61 0.61 0.6
Table 13: ratio of contrast values between primary colors
Seventh embodiment：
Fig. 9 shows a CIE1931 chromaticity diagram of a seventh embodiment of the invention, in which the polygonal areas 902, 904, 906, 908, 910 are red, green, blue, cyan, and xanthic polygonal areas, respectively, the dots represent colors in nature, and the polygonal area 912 represents a gamut formed by the multi-primary color combination and the contrast ratio between the primary colors of the seventh embodiment on the CIE1931 chromaticity diagram.
The multi-primary color combination of the seventh embodiment is obtained by selecting chromaticity values of red, green, blue, and xanthic colors from the chromaticity ranges of table 1 (as shown in table 14), and obtaining contrast ratio between the primary colors according to the simulation procedure (as shown in table 15).
X-axis chair Sign board Y-axis seat Sign
Chromaticity value of red primary color 0.661 0.32
Chromaticity value of green primary color 0.18 0.6
Chromaticity value of blue primary color 0.16 0.09
Colorimetric value of xanthogen 0.53 0.45
Table 14: chromaticity value of each primary color
Yellow/red primary color contrast ratio Yellow/green primary contrast ratio Yellow/blue primary color contrast ratio
1.01 1.01 0.87
Table 15: ratio of contrast values between primary colors
Eighth embodiment：
Fig. 10 shows a CIE1931 chromaticity diagram of an eighth embodiment of the invention, in which the polygonal areas 1002, 1004, 1006, 1008, 1010 are red, green, blue, cyan, and xanthic polygonal areas, respectively, the dots represent colors of nature, and the polygonal area 1012 represents a color gamut formed by the multi-primary color combination and the contrast ratio between the primary colors of the eighth embodiment on the CIE1931 chromaticity diagram.
The multi-primary combination of the eighth embodiment is obtained by selecting chromaticity values of red, green, blue, and xanthogen from the chromaticity ranges in table 1 (as shown in table 16), and obtaining the contrast ratio between the primary colors according to the simulation procedure (as shown in table 17).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.67 0.31
Chromaticity value of green primary color 0.23 0.59
Chromaticity value of blue primary color 0.15 0.1
Colorimetric value of xanthogen 0.48 0.5
Table 16: chromaticity value of each primary color
Yellow/red primary color contrast ratio Yellow/green primary contrast ratio Yellow/blue primary contrast ratio
1.5 1 1
Table 17: ratio of contrast values between primary colors
Ninth embodiment：
Fig. 11 shows a CIE1931 chromaticity diagram of a ninth embodiment of the invention, in which the polygon areas 1102, 1104, 1106, 1108 and 1110 are red, green, blue, cyan and xanthic polygon areas, respectively, the dots represent colors in nature, and the polygon area 1112 is a color gamut formed by the multi-primary color combination and the contrast ratio between the primary colors of the ninth embodiment on the CIE1931 chromaticity diagram.
The multi-primary color combination of the ninth embodiment is obtained by selecting chromaticity values of red, green, blue, and xanthic colors from the chromaticity ranges of table 1 (as shown in table 18), and obtaining contrast ratio between the primary colors according to the simulation procedure (as shown in table 19).
X axis coordinate Y axis coordinate
Chromaticity value of red primary color 0.65 0.31
Chromaticity value of green primary color 0.21 0.59
Chromaticity value of blue primary color 0.15 0.09
Colorimetric value of xanthic color 0.46 0.51
Table 18: chromaticity value of each primary color
Yellow/red primary color contrast ratio Yellow/green primary color contrast ratio Yellow/blue primary color contrast ratio
1.94 1.94 1.33
Table 19: ratio of contrast values between primary colors
Tenth embodiment：
Fig. 12 shows a CIE1931 chromaticity diagram of a tenth embodiment of the invention, wherein the polygonal areas 1202, 1204, 1206, 1208, 1210 are red, green, blue, cyan, and xanthic polygonal areas, respectively, the dots represent colors of nature, and the polygonal area 1212 is a color gamut formed by the multi-primary color combination and the contrast ratio of the primary colors of the tenth embodiment on the CIE1931 chromaticity diagram.
The multi-primary color combination of the tenth embodiment is obtained by selecting chromaticity values of red, green, blue, and xanthic colors from the chromaticity ranges of table 1 (as shown in table 20), and obtaining contrast ratio between the primary colors according to the simulation procedure (as shown in table 21).
X axis coordinate Y-axis coordinate
Chromaticity value of red primary color 0.661 0.317
Chromaticity value of green primary color 0.21 0.6
Chromaticity value of blue primary color 0.16 0.09
Colorimetric value of xanthogen 0.41 0.575
Table 20: chromaticity value of each primary color
Yellow/red primary color contrast ratio Yellow/green primary contrast ratio Yellow/blue primary contrast ratio
2.39 2.39 1.64
Table 21: ratio of contrast values between primary colors
In summary, when the new primary color to be displayed by the sub-pixel of fig. 1 or the color filter unit of fig. 2 is a yellow primary color, the yellow primary color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate
Vertex 1 0.53 0.44
Vertex two 0.544 0.454
Vertex three 0.408 0.589
Vertex four 0.39 0.556
In addition, the contrast ratio among the primary colors of red, green, blue and cyan is:
the contrast value of the xanthic color/the contrast value of the red primary color is more than or equal to 0.58 and less than or equal to 2.4;
the xanthic contrast value/green primary color contrast value is more than or equal to 0.39 and less than or equal to 2.4; and
the contrast value of the xanthic color is more than or equal to 0.58/the contrast value of the blue primary color is less than or equal to 1.78.
On the other hand, when the new primary color to be displayed by the sub-pixel of fig. 1 or the color filter unit of fig. 2 is a cyan primary color, the cyan primary color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
Vertex one 0.165 0.408
Vertex two 0.142 0.165
Vertex three 0.104 0.141
Vertex four 0.106 0.396
In addition, the contrast ratio among the red, green, blue and yellow colors at this time is:
the green primary color contrast value/red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value/green primary color contrast value is more than or equal to 0.28 and less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
In addition, according to another embodiment of the present invention, the new primary colors displayed by the sub-pixels in fig. 1 or the color filter units in fig. 2 may include two new primary colors, such as the cyan primary color and the yellow primary color, at the same time, and the two new primary colors also satisfy the above-mentioned specified chromaticity range and the ratio relationship of the contrast ratio between the primary colors.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims (10)

1. A display device, comprising:
a plurality of pixels, each pixel having more than four sub-pixels, wherein the more than four sub-pixels respectively display a red primary color, a green primary color, a blue primary color, and a yellow color, and the yellow color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate Vertex one 0.53 0.44 Vertex two 0.544 0.454 Vertex three 0.408 0.589 Vertex four 0.39 0.556
And the contrast ratio of the plurality of primary colors is as follows:
the contrast value of the xanthic color/the contrast value of the red primary color is more than or equal to 0.58 and less than or equal to 2.4;
the contrast value of the xanthic color/the contrast value of the green primary color is more than or equal to 0.39 and less than or equal to 2.4; and
0.58 is less than or equal to the xanthic contrast value/the blue primary contrast value is less than or equal to 1.78.
2. The display device of claim 1, wherein one of the four or more sub-pixels displays a cyan primary color, and the cyan primary color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate Vertex one 0.165 0.408 Vertex two 0.142 0.165 Vertex three 0.104 0.141 Vertex four 0.106 0.396
And the contrast ratio of the plurality of primary colors is as follows:
the green primary color contrast value/the red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value is more than or equal to 0.28/the green primary color contrast value is less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
3. The display device of claim 1, wherein the red primary color, the green primary color, and the blue primary color respectively fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate First polygon Region of shape Vertex 1 0.64 0.29 Vertex two 0.691 0.308 Vertex three 0.648 0.351 Vertex four 0.64 0.34 Second polygon Region of shape Vertex one 0.32 0.587 Vertex two 0.2 0.535 Vertex three 0.21 0.71 Third polygon Shaped area Vertex one 0.19 0.072 Vertex two 0.162 0.04 Vertex three 0.104 0.141 Vertex four 0.142 0.165
4. A display device, comprising:
a plurality of pixels, each pixel having more than four sub-pixels, wherein the more than four sub-pixels respectively display a red primary color, a green primary color, a blue primary color and a cyan primary color, and the cyan primary color falls within the following polygon area in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate Vertex one 0.165 0.408 Vertex two 0.142 0.165
Vertex three 0.104 0.141 Vertex four 0.106 0.396
And the contrast ratio of the plurality of primary colors is as follows:
the green primary color contrast value/the red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value is more than or equal to 0.28/the green primary color contrast value is less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
5. The display device of claim 4, wherein the red, green and blue primaries fall within the following polygonal areas in the CIE1931 chromaticity diagram, respectively:
x axis coordinate Y-axis coordinate First multiple sides Shaped area Vertex 1 0.64 0.29 Vertex two 0.691 0.308 Vertex three 0.648 0.351 Vertex four 0.64 0.34 Second multiple side Shaped area Vertex one 0.32 0.587 Vertex two 0.2 0.535 Vertex three 0.21 0.71 Third polygon Region of shape Vertex 1 0.19 0.072 Vertex two 0.162 0.04 Vertex three 0.104 0.141 Vertex four 0.142 0.165
6. A color filter for a flat panel display, comprising:
the color filter units respectively generate a red primary color, a green primary color, a blue primary color and a xanthic color, and the xanthic color falls in the following polygonal areas in a CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate Vertex 1 0.53 0.44 Vertex two 0.544 0.454 Vertex three 0.408 0.589 Vertex four 0.39 0.556
And the contrast ratio of the plurality of primary colors is as follows:
the contrast value of the xanthic color/the contrast value of the red primary color is more than or equal to 0.58 and less than or equal to 2.4;
the xanthic contrast value/the green primary color contrast value is more than or equal to 0.39 and less than or equal to 2.4; and
0.58 is less than or equal to the xanthic contrast value/the blue primary contrast value is less than or equal to 1.78.
7. The color filter of claim 6, wherein one of the plurality of color filter units generates a cyan primary color, and the cyan primary color falls within the following polygonal area in the CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate Vertex 1 0.165 0.408 Vertex two 0.142 0.165 Vertex three 0.104 0.141 Vertex four 0.106 0.396
And the contrast ratio of the plurality of primary colors is as follows:
the contrast value of the cyan primary color/the contrast value of the red primary color is more than or equal to 0.41 and less than or equal to 4.86;
the cyan primary color contrast value/the green primary color contrast value is more than or equal to 0.28 and less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
8. The color filter of claim 6, wherein the primary color of red, the primary color of green and the primary color of blue fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate
First multiple sides Shaped area Vertex one 0.64 0.29 Vertex two 0.691 0.308 Vertex three 0.648 0.351 Vertex four 0.64 0.34 Second multiple side Shaped area Vertex one 0.32 0.587 Vertex two 0.2 0.535 Vertex three 0.21 0.71 Third polygon Shaped area Vertex 1 0.19 0.072 Vertex two 0.162 0.04 Vertex three 0.104 0.141 Vertex four 0.142 0.165
9. A color filter for a flat panel display, comprising:
the color filter units respectively generate a red primary color, a green primary color, a blue primary color and a cyan primary color, and the cyan primary color falls in the following polygonal areas in a CIE1931 chromaticity diagram:
x axis coordinate Y axis coordinate Vertex 1 0.165 0.408 Vertex two 0.142 0.165 Vertex three 0.104 0.141 Vertex four 0.106 0.396
And the contrast ratio of the plurality of primary colors is as follows:
the green primary color contrast value/the red primary color contrast value is more than or equal to 0.41 and less than or equal to 4.86;
the green primary color contrast value is more than or equal to 0.28/the green primary color contrast value is less than or equal to 4.86; and
the cyan primary color contrast value/the blue primary color contrast value is more than or equal to 0.28 and less than or equal to 4.39.
10. The color filter of claim 9, wherein the primary color of red, the primary color of green and the primary color of blue fall within the following polygonal areas in the CIE1931 chromaticity diagram:
x axis coordinate Y-axis coordinate First polygon Shaped area Vertex one 0.64 0.29 Vertex two 0.691 0.308 Vertex three 0.648 0.351 Vertex four 0.64 0.34 Second polygon Shaped area Vertex 1 0.32 0.587 Vertex two 0.2 0.535 Vertex three 0.21 0.71 Third polygon Region of shape Vertex 1 0.19 0.072 Vertex two 0.162 0.04 Vertex three 0.104 0.141 Vertex four 0.142 0.165
CNB2007101543611A 2007-09-26 2007-09-26 Multiprimary color display device and colored filter Active CN100543804C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007101543611A CN100543804C (en) 2007-09-26 2007-09-26 Multiprimary color display device and colored filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007101543611A CN100543804C (en) 2007-09-26 2007-09-26 Multiprimary color display device and colored filter

Publications (2)

Publication Number Publication Date
CN101123050A true CN101123050A (en) 2008-02-13
CN100543804C CN100543804C (en) 2009-09-23

Family

ID=39085371

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2007101543611A Active CN100543804C (en) 2007-09-26 2007-09-26 Multiprimary color display device and colored filter

Country Status (1)

Country Link
CN (1) CN100543804C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108732671A (en) * 2018-08-21 2018-11-02 中国科学院光电研究院 Optical spectrum encoded colorful optical filter array
CN111862888A (en) * 2020-08-25 2020-10-30 深圳市奥拓电子股份有限公司 Method, device and system for displaying four-color low-blue-light wide color gamut

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108732671A (en) * 2018-08-21 2018-11-02 中国科学院光电研究院 Optical spectrum encoded colorful optical filter array
CN111862888A (en) * 2020-08-25 2020-10-30 深圳市奥拓电子股份有限公司 Method, device and system for displaying four-color low-blue-light wide color gamut
WO2022041512A1 (en) * 2020-08-25 2022-03-03 深圳市奥拓电子股份有限公司 Four-color low-blue-light wide-color-gamut display method, apparatus and system

Also Published As

Publication number Publication date
CN100543804C (en) 2009-09-23

Similar Documents

Publication Publication Date Title
US10839759B2 (en) Signal processing method and display device
WO2019114369A1 (en) Primary color conversion method and converter therefor, display control method, and display device
CN101416228B (en) Method and apparatus for converting from source color space to RGBW target color space
US8599211B2 (en) RGBW display system and method for displaying images thereof
US9318075B2 (en) Image driving using color-compensated image data that has been color-scheme converted
CN1882103B (en) Systems and methods for implementing improved gamut mapping algorithms
CN101268499B (en) Display device and color filter substrate
US7911541B2 (en) Liquid crystal display device
JP4805339B2 (en) Liquid crystal display
CN101558440B (en) Liquid crystal indicator
US10347198B2 (en) Image displaying methods and display devices
WO2010061577A1 (en) Multiple primary color liquid crystal display device and signal conversion circuit
EP1949352B1 (en) A method and apparatus processing pixel signals for driving a display and a display using the same
TW201415449A (en) Image display unit, method of driving image display unit, signal generator, signal generation program, and signal generation method
CN111862888B (en) Four-color low-blue-light wide-color-gamut display method, device, system and storage medium
CN108615496A (en) Image processing method and device
US8054410B2 (en) Pixel structure having red sub-pixel, green sub-pixel, blue sub-pixel and white sub-pixel
CN101174386A (en) Image display method
US9779654B2 (en) Method for image display and display system
CN101123050A (en) Multiple primitive color display device and colorful filtering slice
CN102915697A (en) Color gamut compensation method for display
US20070081191A1 (en) Tone characteristics-conversion determining apparatus, tone characteristics-conversion determining method, tone characteristics-conversion determining program, image processing apparatus, and image display apparatus
CN110264972B (en) Method for obtaining brightness compensation value, computer device and computer readable medium
JP2007324665A (en) Image correction apparatus and video display apparatus
CN100437743C (en) Display color adjust

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant