TWI509296B - Color filter and panel, display device comprising the same - Google Patents

Description

Color filter and display panel and display device therewith

The present invention relates to a color filter including a display panel and a display device thereof, and more particularly to a color filter capable of improving display brightness and preventing large-angle color shift of a display, and a display panel and a display device including the same .

Undoubtedly, the development of displays is one of the most promising technologies in the digital consumer field in the new era. A variety of display products, small size such as mobile phones, notebook computers, large-size flat-panel TVs, advertising walls, etc., are indispensable in the display of displays. In the digital arena, when the mature computer industry began to compete with consumer electronics, display technology has been at the core of these two areas.

In today's display industry, because the pixels in the large angle area often cause color mixing problems between different color pixels, the display image has a color shift phenomenon. However, when using the three primary colors to draw the red, green, and blue (RGB); or to increase the use of the white (W), it is difficult to avoid mutual interference between the three primary color elements regardless of the arrangement of red, green, and blue. Therefore, the color mixing problem has always been one of the important issues to be solved in the display.

In addition, in the case of a black matrix, most of the light will enter the black matrix due to the guiding effect, so that the light will not enter the adjacent pixels and avoid interference, and can prevent different paintings. Prime hair The situation in which the light is excited again. However, since most of the light is absorbed by the black matrix, low light extraction rate or low luminous efficiency is caused.

Therefore, in order to solve the above problems, there is an urgent need to develop a color filter which can improve the brightness of the display and prevent the color shift problem at a large angle, and at the same time increase the light extraction rate or the luminous efficiency.

The main object of the present invention is to provide a color filter that can enhance the brightness of the display and prevent the large-angle color shift of the display.

Another object of the present invention is to provide a display panel and display device including the above-described color filter.

In order to achieve the above object, the present invention provides a color filter comprising: a substrate; and a pixel layer disposed on the substrate, wherein the pixel layer comprises: a plurality of pixel units, plural Black matrix, and a mixed color buffer. Each of the pixel units includes a plurality of pixel regions; each black matrix is respectively disposed between two adjacent pixel regions; and the color mixing buffer is set in the plurality of black matrices and the Between multiple pixel regions.

The color mixing buffer may be a predetermined space, or may include one or more photoresist units to provide a range of large angle buffers, and reduce the situation in which the three primary colors interfere with each other. In addition, the color of the one or more photoresist units is not limited. When the pixels are arranged in red, green, blue, and white (RGBW), the photoresist unit is preferably white which does not cause color shift due to color mixing. Or black, better for white that enhances brightness; or, when choosing to use pixels as red, green, blue, and another When the color is arranged (the color does not cause white point shift), the photoresist unit is the color; for example, when the pixel is selected to be red, green, blue, or yellow (RGBY), the photoresist unit is preferably yellow.

Further, the material of the above-mentioned photoresist unit is not particularly limited, and any material used in the prior art may be used, and it is preferred to use acrylic or polyamine which has high adhesion to a glass substrate. (polyimide) or a combination thereof. Thereby, the light transmittance of the photoresist unit is preferably greater than the light transmittance of the pixel region, so it is preferably 90% or more, more preferably 95% or more.

Further, the shape of the photoresist unit is not particularly limited. Preferably, an annular photoresist system is disposed around a pixel region, that is, the photoresist unit surrounds the pixel region; more preferably, It may be only a photoresist unit disposed on opposite sides of a pixel area, and the opposite sides are parallel to a data line, or may be designed according to different requirements of the display, or may be connected to a scan line. parallel.

The present invention further provides a display panel comprising: a color filter as described above; a thin film transistor substrate disposed opposite the color filter; and a display medium formed on the color filter and the film Between the transistor substrates. The display medium is a liquid crystal layer or an organic light emitting layer.

The present invention further provides a display device comprising: a display panel as described above; and a backlight module disposed opposite the display panel.

The present invention also provides a method of fabricating a color filter for the above display, comprising the steps of: (A) providing a substrate; (B) forming a plurality of black matrices on the substrate; and (C) forming a plurality of pixels a unit, each pixel unit separately includes a plurality of pixel regions; wherein the plurality of black moments The array is disposed between two adjacent pixel regions; any pixel region has a color mixing buffer between the adjacent black matrix. The definition of the color mixing buffer is as defined above.

After the step (C), the method further includes: step (c) forming a photoresist unit, which is disposed in the color mixing buffer; the photoresist unit may even cover the plurality of pixel regions and the complex number On a black matrix. Alternatively, step (c) may form a plurality of photoresist units, which are respectively disposed in the color mixing buffer. The color, shape, material, and properties of the photoresist unit are as defined above and can be adjusted as desired by one skilled in the art.

In addition, the method for fabricating the color filter of the present invention may be another process comprising the steps of: (A) providing a substrate; (B) forming a plurality of black matrices on the substrate; (C) Forming one or more photoresist units on the substrate; and (D) forming a plurality of pixel units on the substrate, each of the pixel units respectively including a plurality of pixel regions; wherein the plurality of black matrices are Between two adjacent pixel regions; and the one or more photoresist units are disposed between any of the pixel regions and the adjacent black matrix. The one or more photoresist units may be one or more white photoresists, and the color, shape, material, and properties of the photoresist unit are as defined above, and may be desired by those skilled in the art. Make adjustments.

Thereby, the display of the present invention has a color filter including a color mixing buffer, thereby reducing the mutual interference of the three primary colors, effectively improving the brightness of the display and preventing the color shift problem at a large angle, and increasing the light extraction rate or the luminous efficiency. Moreover, the present invention is applicable to various liquid crystal displays (LCDs) And organic light-emitting diode (OLED) pixel arrangement, such as stripe, delta, or pentile structure.

Example 1

As shown in FIG. 1, it is a schematic cross-sectional view of a pixel layer of the present invention. First, a plurality of black matrices 2 are formed on a substrate (not shown); and a plurality of pixel regions 31, 32 are formed. Wherein, a plurality of black matrices 2 are disposed between two adjacent pixel regions 31, 32, and the two adjacent pixel regions are different colors; any pixel region is adjacent to the adjacent black matrix There is a color mixing buffer 41. The color mixing buffer 41 is not filled with a photoresist material, and is only a space for buffering the color mixture phenomenon.

Example 2

As shown in FIG. 2, it is a schematic cross-sectional view of a pixel layer of the present invention. First, a plurality of black matrices 2 are formed on a substrate (not shown); then a plurality of pixel regions 31, 32 are formed; and then a white region is formed between any of the pixel regions 31, 32 and the adjacent black matrix 2. The photoresist unit 42 further covers the plurality of pixel regions 31, 32 and the plurality of black matrices 2. Wherein, the plurality of black matrices 2 are located between two adjacent pixel regions 31, 32, and the two adjacent pixel regions are different colors; the photoresist unit 42 is used as a base resin. Made of high-permeability materials such as arcylic or polyimide, the light transmittance is 90% or more.

Example 3

As shown in FIG. 3, it is a schematic cross-sectional view of a pixel layer of the present invention. First, a plurality of black matrices 2 are formed on a substrate (not shown); then a plurality of pixel regions 31, 32 are formed; and then a white region is formed between any of the pixel regions 31, 32 and the adjacent black matrix 2. The photoresist unit 43 further covers the plurality of black matrices 2 . Alternatively, after forming a plurality of black matrices 2, a white photoresist unit 43 is formed, and a plurality of pixel regions 31, 32 are formed.

Wherein, the plurality of black matrices 2 are located between two adjacent pixel regions 31, 32, and the two adjacent pixel regions are different colors; the photoresist unit 43 is used as a base resin. Made of high-permeability materials such as arcylic or polyimide, the light transmittance is 90% or more.

Example 4

As shown in FIG. 4, it is a schematic cross-sectional view of a pixel layer of the present invention. First, a plurality of black matrices 2 are formed on a substrate (not shown); then a plurality of pixel regions 31, 32 are formed; and then a white region is formed between any of the pixel regions 31, 32 and the adjacent black matrix 2. The photoresist unit 44 further covers a portion of the plurality of black matrices 2 . Alternatively, after forming a plurality of black matrices 2, a white photoresist unit 44 is formed, and a plurality of pixel regions 31, 32 are formed.

Wherein, the plurality of black matrices 2 are located between two adjacent pixel regions 31, 32, and the two adjacent pixel regions are different colors; the photoresist unit 44 is used as a base resin. Acrylic resin (arcylic) or It is made of a high-permeability material such as polyimide, and its light transmittance is 90% or more.

Example 5

A schematic diagram of light entering a pixel area of a conventional display is shown in FIG. 5A, wherein the direction of the arrow is the direction in which the light travels; here, a color mixture occurs between the two pixel regions 31, 32, and a color shift occurs, and Part of the light is absorbed by the black matrix. Thereby, when light enters the pixel regions 31, 32 of the display of the present invention (as shown in FIG. 5B), the light can buffer the phenomenon of light mixing when passing through the photoresist unit 44, preventing color shift generation, and being blocked by light. The color of the unit 44 is white, which can increase the brightness, thereby increasing the light extraction rate or the luminous efficiency.

Example 6

Figure 6A is a schematic diagram of an RGBW pixel layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively, a green pixel area 31, a red pixel area 32, a blue pixel area 33, and a white pixel area 34; the black matrix 2 is set in two adjacent The photoreceptor region is between 31, 32, 33, 34; and the photoresist unit 45 is an annular photoresist disposed between the black matrix 2 and the pixel regions 31, 32, 33, 34, that is, surrounding the picture Prime areas 31, 32, 33, 34.

Example 7

Figure 6B is a schematic diagram of an RGBW pixel layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively, a green pixel area 31, a red pixel area 32, a blue pixel area 33, and a white pixel area 34; the black matrix 2 is set in two adjacent The photoresist unit 46 is disposed between the pixel regions 31, 32, 33, 34 on opposite sides of the data line.

Example 8

Fig. 7A is a schematic view showing the stripe layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively a green pixel area 31, a red pixel area 32, and a blue pixel area 33; the black matrix 2 is grouped in two adjacent pixel areas 31, Between 32, 33; and the photoresist unit 45 is an annular photoresist disposed between the black matrix 2 and the pixel regions 31, 32, 33.

Example 9

Fig. 7B is a schematic view showing the strip layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively a green pixel area 31, a red pixel area 32, and a blue pixel area 3; the black matrix 2 is grouped in two adjacent pixel areas 31, Between 32, 33; and the photoresist unit 46 is disposed on opposite sides of the pixel regions 31, 32, 33 parallel to the data line.

Example 10

Figure 8A is a schematic view of a triangular pixel layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively a green pixel area 31, a red pixel area 32, and a blue pixel area 33; the black matrix 2 is grouped in two adjacent pixel areas 31, Between 32, 33; and the photoresist unit 45 is an annular photoresist disposed between the black matrix 2 and the pixel regions 31, 32, 33, that is, around the pixel regions 31, 32, 33.

Example 11

Figure 8B is a schematic view of a triangular pixel layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively, a green pixel area 31, a red pixel area 32, and a blue pixel area 3; the black matrix 2 is set in two adjacent The pixel units 31, 32, 33 are arranged; and the photoresist unit 46 is disposed on opposite sides of the pixel regions 31, 32, 33 parallel to the data line.

Example 12

Figure 9A is a schematic view of a pentile pixel layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively a green pixel area 31, a red pixel area 32, and a blue pixel area 33; the black matrix 2 is grouped in two adjacent pixel areas 31, Between 32, 33; and the photoresist unit 45 is an annular photoresist disposed between the black matrix 2 and the pixel regions 31, 32, 33, that is, around the pixel regions 31, 32, 33.

Example 13

Figure 9B is a schematic diagram of a pentile pixel layer of the present invention. The pixel layer includes: a plurality of pixel units, respectively a green pixel area 31, a red pixel area 32, and a blue pixel area 3; the black matrix 2 is grouped in two adjacent pixel areas 31, Between 32, 33; and the photoresist unit 46 is disposed on opposite sides of the pixel regions 31, 32, 33 parallel to the data line.

1‧‧‧Substrate

2‧‧‧Black matrix

31‧‧‧Green pixel area

32‧‧‧Red pixel area

33‧‧‧Blue pixel area

34‧‧‧White pixels area

41‧‧‧Color mixing buffer

42,43,44,45,46‧‧‧Light resistance unit

1 is a schematic cross-sectional view showing a pixel layer of Embodiment 1 of the present invention.

2 is a schematic cross-sectional view showing a pixel layer of Embodiment 2 of the present invention.

3 is a schematic cross-sectional view showing a pixel layer of Embodiment 3 of the present invention.

Figure 4 is a schematic cross-sectional view showing a pixel layer of Embodiment 4 of the present invention.

Figure 5A is a schematic diagram of conventional light entering a pixel region.

Fig. 5B is a schematic view showing the light entering the pixel region in the fifth embodiment of the present invention.

6A is a schematic diagram of an RGBW pixel layer in Embodiment 6 of the present invention.

6B is a schematic diagram of an RGBW pixel layer of Embodiment 7 of the present invention.

Fig. 7A is a schematic view showing a straight stripe layer of Embodiment 8 of the present invention.

Fig. 7B is a schematic view showing a straight bar type pixel layer of Embodiment 9 of the present invention.

Figure 8A is a schematic diagram of a triangular pixel layer of Embodiment 10 of the present invention.

Figure 8B is a schematic diagram of a triangular pixel layer of Embodiment 11 of the present invention.

9A is a schematic diagram of a pentile pixel layer in Embodiment 12 of the present invention.

Figure 9B is a schematic diagram of a pentile pixel layer of Embodiment 13 of the present invention.

2‧‧‧Black matrix

31‧‧‧Green pixel area

32‧‧‧Red pixel area

33‧‧‧Blue pixel area

34‧‧‧White pixels area

46‧‧‧Photoresist unit

Claims (7)

A color filter comprising: a substrate; and a pixel layer disposed on the substrate, the pixel layer comprising: a plurality of pixel units, a plurality of black matrices, and a mixed color buffer; wherein Each pixel unit includes a plurality of pixel regions; each black matrix is respectively disposed between two adjacent pixel regions; and the color mixing buffer is set in the plurality of black matrices and the plurality of pixels Between the pixel regions, and the color mixing buffer includes one or more photoresist units, and the light transmittance of the one or more photoresist units is 90% or more and is set in the plurality of pixel regions. On opposite sides, the opposite sides are parallel to the data line. The color filter of claim 1, wherein the one or more photoresist units surround the plurality of pixel regions. The color filter of claim 1, wherein the light transmittance of the one or more photoresist units is greater than the light transmittance of the plurality of pixel regions. The color filter of claim 1, wherein the substrate resin of the one or more photoresist units is acrylic, polyimide or a combination thereof. A display panel comprising: a color filter according to claim 1; a thin film transistor substrate disposed opposite to the color filter; A display medium is formed between the color filter and the thin film transistor substrate. The display panel of claim 5, wherein the display medium is a liquid crystal layer or an organic light emitting layer. A display device comprising: a display panel as claimed in claim 5; and a backlight module disposed opposite the display panel.