CN102540548A - Color filter arrangement structure of display panel - Google Patents

Abstract

A color filter configuration structure of a display panel. The display panel includes a first pixel and a second pixel. The first pixel includes a plurality of first sub-pixels of different colors, and the second pixel includes a plurality of second sub-pixels of different colors. One first edge sub-pixel in the plurality of first sub-pixels is adjacent to one second edge sub-pixel in the plurality of second sub-pixels, and the first edge sub-pixel and the second edge sub-pixel are in the same color.

Description

Color filter arrangement structure of display panel

technical field

The present invention relates to a display panel, and in particular to a color filter arrangement of the display panel.

Background technique

FIG. 1 illustrates a conventional color filter arrangement structure of a display panel 100 . The display panel 100 has a plurality of pixels, such as a pixel 120 and a pixel 130 . Each pixel has a plurality of sub-pixels of different colors. The traditional color filter configuration structure is to arrange each pixel to have the same color configuration. For example, if the pixel 120 has three sub-pixels arranged in a straight line and the colors are "green, blue, red" in sequence, then the pixel 130 and other pixels also have three sub-pixels arranged in a straight line and the colors are "green, blue" in sequence. The three sub-pixels of "color, red".

Improving the resolution of a display panel has always been a technical subject in this field. Under the development trend of continuously improving the resolution of the display panel 100 , the size and spacing of the sub-pixels are also becoming smaller. However, due to the mutual influence of the fringing field effect between two adjacent (adjacent or neighbor) pixels, as the resolution increases (or the sub-pixel size decreases), the color gamut of the display panel 100 will decrease accordingly. get smaller. The aforementioned evaluation of the color gamut is usually based on the color gamut formulated by the National Television Standards Committee (NTSC) as a standard, and percentage (%) is used as the unit of the color gamut.

The area 110 shown in FIG. 1 is the edge area adjacent to the pixels 120 and 130 . Assume that in a certain image frame (frame), the green sub-pixel 131 in the pixel 130 should not display green light, but due to the fringe field effect, the driving electric field of the red sub-pixel 121 in the pixel 120 may affect the pixel 130, so that adjacent The green sub-pixel 131 leaks green light. Generally, the smaller the size of the sub-pixel, or the smaller the pitch of the sub-pixel, or the larger the distance between the upper and lower electrode plates in the sub-pixel, the more serious the fringe field effect will be. Especially in high density projection display panels such as Liquid Crystal on Silicon panel (LCOS panel), the fringe field effect is even more obvious.

For example, FIG. 2 is a schematic diagram illustrating the relationship between the size of a sub-pixel and its color gamut in an LCD-on-Si panel. Wherein, the vertical axis represents the color gamut of the LCOS panel, the horizontal axis represents the sub-pixel size of the LC-on-Silicon panel, and the curve 210 represents the relationship between the sub-pixel size and its color gamut. It can be seen from FIG. 2 that the smaller the size of the sub-pixel, the more serious the fringe field effect will be, resulting in a smaller color gamut of the liquid crystal on silicon panel. For example, if the sub-pixel size of the LCD-on-Si panel is 18 μm×18 μm, the color gamut of the LCD-on-Si panel is about 34%, but if the sub-pixel size is reduced to 12.6 μm×12.6 μm, the LCD-on-Si panel The color gamut narrows down to about 31%.

Contents of the invention

The invention provides a color filter configuration structure of a display panel. Compared with the performance of the same color gamut of the traditional color filter configuration structure, the color filter configuration structure of the present invention can further reduce the sub-pixel size to improve the resolution of the display panel. Or, compared with the same resolution of the conventional color filter arrangement structure, the color filter arrangement structure of the present invention can improve the color gamut performance of the display panel.

Embodiments of the present invention provide a color filter configuration structure of a display panel. The display panel includes first pixels and second pixels. The first pixel includes a plurality of first sub-pixels of different colors, and the second pixel includes a plurality of second sub-pixels of different colors. Wherein, at least one first edge sub-pixel in the plurality of first sub-pixels is adjacent to a second edge sub-pixel in the plurality of second sub-pixels in a first direction, and the first edge sub-pixel Both the pixel and the second edge sub-pixel are of the first color.

Based on the above, in the embodiment of the present invention, sub-pixels of the same color are arranged together in two adjacent pixels. For example, assuming that the first edge sub-pixel in the first pixel is adjacent to the second edge sub-pixel in the second pixel, the first and second edge sub-pixels are arranged to be the same color. Therefore, even if the driving electric field of the first edge sub-pixel affects the second edge sub-pixel and makes the adjacent second edge sub-pixel leak light, since the first and second edge sub-pixels have the same color, the edge can be improved. Effect of field effects on color gamut performance.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

FIG. 1 illustrates a conventional color filter arrangement structure of a display panel.

FIG. 2 is a schematic diagram illustrating the relationship between the size of a sub-pixel and its color gamut in an LCD-on-Si panel.

FIG. 3 is a schematic diagram illustrating a color filter configuration structure of a display panel according to an embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a color filter configuration structure of a display panel according to another embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating the relationship between the color gamut of the LCD panel shown in FIG. 4 and the sub-pixel size thereof according to an embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating a color filter configuration structure of a display panel according to yet another embodiment of the present invention.

[Description of main component labels]

100, 300, 400, 600: display panel

110: area

120, 130, 310, 320, 410, 420, 430, 630: Pixels

121, 131, 311~313, 321~323, 411~414, 421~424, 631: sub-pixel

210, 510: characteristic curve

Detailed ways

FIG. 3 is a schematic diagram illustrating a color filter configuration structure of a display panel according to an embodiment of the present invention. Referring to FIG. 3 , the display panel 300 includes a plurality of pixels, such as the first pixel 310 and the second pixel 320 shown in FIG. 3 . The first pixel 310 and the second pixel 320 are adjacent to each other, and both the first pixel 310 and the second pixel 320 are arranged on the same scanning line.

The first pixel 310 includes a plurality of first sub-pixels (sub-pixels) of different colors, such as the first sub-pixels 311, 312 and 313 shown in FIG. Green (marked as G), blue (marked as B). The second pixel 320 also includes a plurality of second sub-pixels of different colors, such as the second sub-pixels 321 , 322 and 323 shown in FIG. 3 , and the colors of the three are blue, green and red respectively. Here, the sub-pixel 313 adjacent to the second pixel 320 among the first sub-pixels 311-313 is called the first edge sub-pixel, and the sub-pixel 321 adjacent to the first pixel 310 among the second sub-pixels 321-323 is called the second edge sub-pixel. Edge subpixels. Since the first edge sub-pixel 313 and the second edge sub-pixel 321 are of the same color (for example, blue), even if the driving electric field of the first edge sub-pixel 313 affects the second edge sub-pixel 321 due to the fringe field effect, The second edge sub-pixel 321 still does not leak light of other colors (eg, non-blue light), so the influence of the fringe field effect on the color gamut performance can be improved.

FIG. 4 is a schematic diagram illustrating a color filter configuration structure of a display panel according to another embodiment of the present invention. Referring to FIG. 4 , the display panel 400 includes a plurality of pixels, such as the first pixel 410 and the second pixel 420 shown in FIG. 4 . The first pixel 410 is adjacent to the second pixel 420 in a first direction (for example, the X-axis direction or the scanning line direction). In this embodiment, both the first pixel 410 and the second pixel 420 are 2×2 sub-pixel arrays. The first pixel 410 includes a plurality of first sub-pixels 411 , 412 , 413 and 414 of different colors, and the second pixel 420 also includes a plurality of second sub-pixels 421 , 422 , 423 and 424 of different colors. The sub-pixels 411, 412, 421 and 422 are arranged on the same scan line, and the sub-pixels 413, 414, 423 and 424 are arranged on another scan line.

If the display panel 400 is applied to a reflective display panel (such as a liquid crystal on silicon panel), in order to increase the brightness, white sub-pixels can be arranged in the pixels. For example, the colors of the first sub-pixels 411 - 414 shown in FIG. 4 are green, white (marked as W), blue, and red, respectively. The colors of the second sub-pixels 421-424 are white, green, red and blue respectively. In this embodiment, the sub-pixels 412 and 414 adjacent to the second pixel 420 among the first sub-pixels 411-414 are referred to as the first edge sub-pixel and the third edge sub-pixel respectively, and the second sub-pixels 421-424 adjacent to the first The sub-pixels 421 and 423 of the pixel 410 are respectively called the second edge sub-pixel and the fourth edge sub-pixel.

Since the first edge sub-pixel 412 and the second edge sub-pixel 421 are of the same color (for example, white), even if the driving electric field of the first edge sub-pixel 412 affects the second edge sub-pixel 421 due to the fringe field effect, The two-edge sub-pixel 421 still does not leak light of other colors (eg, non-white light). Similarly, since the third edge sub-pixel 414 and the fourth edge sub-pixel 423 are of the same color (for example, red), even the driving electric field of the third edge sub-pixel 414 affects the fourth edge sub-pixel due to the fringe field effect. In the pixel 423, the fourth edge sub-pixel 423 still does not leak light of other colors (eg, non-red light). Therefore, this embodiment can improve the influence of the fringe field effect on the color gamut performance.

Due to the relationship between the internal structure of the display panel, the fringe field effect in the second direction (such as the Y-axis direction or the data line direction) is less obvious, so each adjacent pixel in the second direction can have a Same color configuration. For example, the third pixel 430 is adjacent to the first pixel 410 in the second direction, and the color filter configurations of the first pixel 410 and the third pixel 430 are the same.

FIG. 5 is a schematic diagram illustrating the relationship between the color gamut and the sub-pixel size of the LCD panel 400 shown in FIG. 4 according to an embodiment of the present invention. Wherein, the vertical axis represents the color gamut of the LCD-on-Si panel, the horizontal axis represents the sub-pixel size of the LCD-on-Si panel, and the curve 510 represents the relation curve between the sub-pixel size of the display panel 400 and its color gamut. From the characteristic curve 210 of the traditional color filter configuration shown in FIG. 5 and the characteristic curve 510 of the color filter configuration shown in the embodiment of the present invention, it can be seen that compared with the same color gamut performance of the traditional color filter configuration structure, The color filter configuration structure of the present invention can further reduce the size of the sub-pixels to improve the resolution of the display panel. For example, in terms of a 40% color gamut, the minimum sub-pixel size of the traditional color filter configuration structure can only be 24 μm×24 μm, while the color filter configuration structure of the present invention can further reduce the sub-pixel size to 17.5 μm×17.5 μm. Therefore, this embodiment can improve the resolution of the display panel. Alternatively, compared with the same resolution of the conventional color filter configuration structure, the color filter configuration structure of this embodiment can improve the color gamut performance of the display panel.

In the above embodiments, each adjacent pixel of the display panel 400 in the second direction (the Y-axis direction or the data line direction) has the same color configuration, but the embodiments of the present invention are not limited thereto. For example, FIG. 6 is a schematic diagram illustrating a color filter configuration structure of a display panel according to yet another embodiment of the present invention. Referring to FIG. 4 , the display panel 600 includes a plurality of pixels, such as the first pixel 410 , the second pixel 420 and the third pixel 630 shown in FIG. 6 . For the first pixel 410 and the second pixel 420, reference may be made to the related description of FIG. 4 . The third pixel 630 includes a plurality of third sub-pixels of different colors, wherein at least one fifth edge sub-pixel 631 in the plurality of third sub-pixels is adjacent to the second direction (Y-axis direction or data line direction) to A sixth edge sub-pixel 413 among the first sub-pixels 411 - 414 , and the fifth edge sub-pixel 631 and the sixth edge sub-pixel 413 are both of the third color (eg, blue).

To sum up, in the above embodiments, sub-pixels of the same color are arranged together in two adjacent pixels. For example, assuming that the first edge sub-pixel in the first pixel is adjacent to the second edge sub-pixel in the second pixel, the first and second edge sub-pixels are arranged to be the same color. If the sub-pixel 313 in FIG. 3, the sub-pixel 412 in FIG. 4, or the sub-pixel 413 in FIG. sub-pixel 631 . Therefore, even if the driving electric field of the first edge sub-pixel affects the second edge sub-pixel and makes the adjacent second edge sub-pixel leak light, since the first and second edge sub-pixels have the same color, the edge can be improved. Effect of field effects on color gamut performance.

Although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (7)

1. A color filter configuration structure of a display panel, comprising: a first pixel comprising a plurality of first sub-pixels of different colors; and A second pixel comprising a plurality of second sub-pixels of different colors, wherein at least one second edge sub-pixel in the plurality of second sub-pixels is adjacent to one of the plurality of first sub-pixels in a first direction A first edge sub-pixel, and the first edge sub-pixel and the second edge sub-pixel are both a first color. 2. The color filter arrangement according to claim 1, wherein the first color is red, green, blue or white. 3. The color filter configuration structure according to claim 1, wherein both the first pixel and the second pixel are 2×2 sub-pixel arrays. 4. The color filter arrangement according to claim 1, wherein a third edge sub-pixel in the plurality of first sub-pixels is adjacent to a fourth edge sub-pixel in the plurality of second sub-pixels, and Both the third edge sub-pixel and the fourth edge sub-pixel are of a second color. 5. The color filter arrangement structure according to claim 1, wherein the first edge sub-pixel and the second edge sub-pixel are both arranged on the same scanning line. 6. The color filter arrangement according to claim 1, further comprising: A third pixel comprising a plurality of third sub-pixels of different colors, wherein at least one fifth edge sub-pixel in the plurality of third sub-pixels is adjacent to the plurality of first sub-pixels in a second direction A sixth edge sub-pixel, and the fifth edge sub-pixel and the sixth edge sub-pixel are both a third color. 7. The color filter arrangement according to claim 1, further comprising: A third pixel is adjacent to the first pixel in a second direction, wherein the configuration structure of the color filter of the first pixel and the third pixel is the same.

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