Color reflective display panel
By adjusting the area ratio of color blocks in the color filter array, the problem that reflective displays are difficult to display bright colors under different lighting conditions is solved, and brighter red, green, yellow and darker blue display effects are achieved.
Patent Information
- Application Number
- CN202311242493.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-25
- Publication Date
- 2025-03-25
AI Technical Summary
Reflective displays usually look darker due to lack of light sources and are difficult to display brighter colors such as yellow under different lighting conditions.
By adjusting the arrangement of color blocks in the color filter array, the area of red and green blocks is increased, and the area of blue blocks is reduced, thereby optimizing the display of colors.
The brightness improvement of red, green and yellow colors and the darkening of blue colors are achieved, improving the display effect of the monitor under different lighting conditions.
Smart Images
Figure CN119689746A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a display panel, and in particular to a color reflective display panel. Background Art
[0002] Color reflective displays usually require a color filter array (CFA) to display colors. The color filter array usually consists of three primary colors: red, green, and blue, occupying equal areas. This is very beneficial for emissive displays such as liquid crystal displays, organic light-emitting diodes, and cathode ray tubes. Compared with emissive displays, reflective displays usually appear darker because they have no light source. In addition, the performance of reflective displays also depends on the surrounding lighting conditions, which can easily lead to difficulties in displaying brighter colors, such as yellow. Summary of the invention
[0003] The present invention provides a color reflective display panel, wherein the color filter array can increase the area of the red block and the green block and reduce the area of the blue block according to the arrangement of the color blocks, so that the displayed red, green and yellow can be brighter and the blue can be darker.
[0004] The color reflective display panel of the present invention comprises a reflective display panel and a color filter array. The color filter array is located on the reflective display panel. The color filter array comprises a plurality of pixel units. Each pixel unit comprises one or more first pixels having a first color, one or more second pixels having a second color, and one or more third pixels having a third color. The area ratio of the third pixel to the pixel unit is less than one third.
[0005] In an embodiment of the present invention, the first pixel occupies a larger proportion of the area of the pixel unit than one third, and the second pixel occupies a larger proportion of the area of the pixel unit than one third.
[0006] In one embodiment of the present invention, the area ratio of the third pixel to the pixel unit is 20%±5%.
[0007] In one embodiment of the present invention, the third pixel occupies 20% of the area of the pixel unit.
[0008] In one embodiment of the present invention, the pixel fill factor (CFA) of the first color is pFF1, the pixel fill factor of the second color is pFF2, and the pixel fill factor of the third color is pFF3, and pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=1:1:2.
[0009] In one embodiment of the present invention, the third pixel occupies 25% of the area of the pixel unit.
[0010] In one embodiment of the present invention, the pixel filling factor of the first color is pFF1, the pixel filling factor of the second color is pFF2, and the pixel filling factor of the third color is pFF3, and pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=2:2:3.
[0011] In an embodiment of the present invention, the first color is red, the second color is green, and the third color is blue.
[0012] In an embodiment of the present invention, the shapes of the blocks of the first color and the blocks of the second color are different from the shape of the block of the third color.
[0013] In an embodiment of the present invention, the shapes of the blocks of the first color and the blocks of the second color are the same as the shape of the block of the third color. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present invention and together with the description serve to explain the principles of the present invention.
[0015] Figure 1 A schematic diagram showing a color reflective display panel according to an embodiment of the present invention;
[0016] Figure 2 Show Figure 1 A schematic diagram of a color filter array of an embodiment;
[0017] Figure 3 A schematic diagram showing a pixel unit according to another embodiment of the present invention;
[0018] Figure 4 A schematic diagram showing a color filter array according to another embodiment of the present invention;
[0019] Figure 5 A schematic diagram showing a color filter array according to another embodiment of the present invention;
[0020] Figure 6 A schematic diagram showing a color filter array according to another embodiment of the present invention is shown. DETAILED DESCRIPTION
[0021] Figure 1 A schematic diagram showing a color reflective display panel according to an embodiment of the present invention is shown. Figure 2 Show Figure 1A schematic diagram of a color filter array of an embodiment. Please refer to Figure 1 and Figure 2 The color reflective display panel 100 includes a reflective display panel 110 and a color filter array 200A. The color filter array 200A is located on the reflective display panel 110. The color filter array 200A includes a plurality of pixel units 210A. The pixel units 210A are repeatedly arranged to form the color filter array 200A.
[0022] Specifically, the pixel unit 210A includes two first pixels 211, two second pixels 212, and one third pixel 213. The first pixel 211 has a first color R, the second pixel 212 has a second color G, and the third pixel 213 has a third color B. In this embodiment, the first color R is red, the second color G is green, and the third color B is blue.
[0023] In this embodiment, the two first pixels 211 occupy 40% of the area of the pixel unit 210A, the two second pixels 212 occupy 40% of the area of the pixel unit 210A, and the third pixel 213 occupies 20% of the area of the pixel unit 210A. In other words, the two first pixels 211 occupy more than one third of the area of the pixel unit 210A, the two second pixels 212 occupy more than one third of the area of the pixel unit 210A, and the third pixel 213 occupies less than one third of the area of the pixel unit 210A.
[0024] On the other hand, the pixel filling factor of the first color R is pFF1, the pixel filling factor of the second color G is pFF2, and the pixel filling factor of the third color B is pFF3. In the present embodiment, pFF1, pFF2, and pFF3 meet the condition of pFF1: pFF2: pFF3 = 1: 1: 2 to maintain white balance. Among them, pFF1: pFF2: pFF3 = 1 / N1: 1 / N2: 1 / N3, and N1 is the number of pixels of the first color R in the pixel unit 210A; N2 is the number of pixels of the second color G in the pixel unit 210A; N3 is the number of pixels of the third color B in the pixel unit 210A.
[0025] In addition, the shapes of the blocks of the first color R and the blocks of the second color G are rectangular, and the shape of the blocks of the third color B is square, which are different.
[0026] Figure 3 A schematic diagram showing a pixel unit according to another embodiment of the present invention is shown. Figure 3 In this embodiment, the third color B of the pixel unit 210A may also fill the entire third pixel 213 .
[0027] Figure 4A schematic diagram showing a color filter array according to another embodiment of the present invention is shown. Figure 4 The color filter array 200B includes a plurality of pixel units 210B. The pixel units 210B are repeatedly arranged to form the color filter array 200B.
[0028] Specifically, the pixel unit 210B includes four first pixels 211, four second pixels 212, and two third pixels 213. The four first pixels 211 occupy 40% of the area of the pixel unit 210B, the four second pixels 212 occupy 40% of the area of the pixel unit 210B, and the two third pixels 213 occupy 20% of the area of the pixel unit 210B.
[0029] On the other hand, in this embodiment, pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=1:1:2 to maintain white balance. In addition, the shapes of the first color R block and the second color G block are rectangular, and the shape of the third color B block is square, which are different.
[0030] Figure 5 A schematic diagram showing a color filter array according to another embodiment of the present invention is shown. Figure 5 The color filter array 200C includes a plurality of pixel units 210C. The pixel units 210C are repeatedly arranged to form the color filter array 200C.
[0031] Specifically, the pixel unit 210C includes six first pixels 211, six second pixels 212, and four third pixels 213. The six first pixels 211 occupy 37.5% of the area of the pixel unit 210C, the six second pixels 212 occupy 37.5% of the area of the pixel unit 210C, and the four third pixels 213 occupy 25% of the area of the pixel unit 210C. That is, in the embodiment of the present invention, the area ratio of the third pixel B to the pixel unit can be 20%±5%, that is, between 15% and 25% (including 15% and 25%).
[0032] On the other hand, in this embodiment, pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=2:2:3 to maintain white balance. In addition, the shapes of the first color R block and the second color G block are rectangular, and the shape of the third color B block is square, which are different.
[0033] Figure 6 A schematic diagram showing a color filter array according to another embodiment of the present invention is shown. Figure 6 The color filter array 200D includes a plurality of pixel units 210D. The pixel units 210D are repeatedly arranged to form the color filter array 200D.
[0034] Specifically, the pixel unit 210D includes 12 first pixels 211, 12 second pixels 212 and 8 third pixels 213. The 12 first pixels 211 occupy 37.5% of the area of the pixel unit 210D, the 12 second pixels 212 occupy 37.5% of the area of the pixel unit 210D, and the 8 third pixels 213 occupy 25% of the area of the pixel unit 210D.
[0035] On the other hand, in this embodiment, pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=2:2:3 to maintain white balance. In addition, the first color R block, the second color G block and the third color B block are all in the same rectangular shape.
[0036] In summary, in the embodiment of the present invention, the color filter array can increase the area of the red block and the green block in the pixel unit and reduce the area of the blue block according to the arrangement of its color blocks, so that the displayed red, green and yellow can be brighter and the blue can be darker.
[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A color reflective display panel, comprising: Reflective display panel; as well as a color filter array, located on the reflective display panel, the color filter array comprising a plurality of pixel units, each of the plurality of pixel units comprising one or more first pixels having a first color, one or more second pixels having a second color, and one or more third pixels having a third color, The one or more third pixels occupy a proportion of less than one third of the area of the pixel unit.
2. The color reflective display panel according to claim 1, wherein the one or more first pixels occupy a proportion of more than one third of the area of the pixel unit, and the one or more second pixels occupy a proportion of more than one third of the area of the pixel unit. 3 . The color reflective display panel according to claim 1 , wherein a ratio of the area occupied by the one or more third pixels to the area of the pixel unit is 20%±5%. 4 . The color reflective display panel according to claim 3 , wherein a ratio of the area occupied by the one or more third pixels to the area of the pixel unit is 20%.
5. The color reflective display panel according to claim 4, wherein the pixel filling factor of the first color is pFF1, the pixel filling factor of the second color is pFF2, and the pixel filling factor of the third color is pFF3, and pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=1:1:
2. 6 . The color reflective display panel according to claim 3 , wherein a ratio of the area occupied by the one or more third pixels to the area of the pixel unit is 25%.
7. The color reflective display panel according to claim 6, wherein the pixel filling factor of the first color is pFF1, the pixel filling factor of the second color is pFF2, and the pixel filling factor of the third color is pFF3, and pFF1, pFF2 and pFF3 meet the condition of pFF1:pFF2:pFF3=2:2:
3. 8 . The color reflective display panel according to claim 1 , wherein the first color is red, the second color is green, and the third color is blue. 9 . The color reflective display panel according to claim 1 , wherein the shapes of the blocks of the first color and the blocks of the second color are different from the shape of the block of the third color. 10 . The color reflective display panel according to claim 1 , wherein the shapes of the blocks of the first color and the blocks of the second color are the same as the shape of the block of the third color.