CN202494843U - Color film substrate, liquid crystal panel comprising color membrane substrate, and display device - Google Patents

Abstract

The utility model discloses a color film substrate, a liquid crystal panel including the color film substrate and a display device, relates to the technical field of thin film transistor liquid crystal displays, and solves the problem of color problems caused by the step difference between the color resin and the black matrix in the prior art. There is a problem that the production cost of the film substrate is high. In the embodiment of the present invention, since there is an overlapping portion between adjacent resin films of different colors, and the black matrix blocks the overlapping portion above the overlapping portion, the black matrix and the corresponding overlapping portion The formed protruding structure can be used as a spacer to control the thickness of the liquid crystal cell, which saves the steps of forming a protective layer and a columnar spacer in the prior art. Therefore, it not only eliminates the step difference between the color resin and the black matrix, but also reduces The manufacturing cost of the color filter substrate is reduced.

Description

Color filter substrate, liquid crystal panel including the color filter substrate, and display device

technical field

The utility model relates to the technical field of thin film transistor liquid crystal displays, in particular to a color filter substrate, a liquid crystal panel including the color filter substrate, and a display device. the

Background technique

The color filter substrate (Color Filter, referred to as: CF) is one of the main components of the thin film transistor liquid crystal display. monitor. the

FFS (Fringe Field Switching, fringe field switching) mode liquid crystal display is a thin film transistor liquid crystal display with wide viewing angle and high definition, and the color filter substrate has the structure shown in Figure 1. the

As shown in Figure 1, the color filter substrate includes: a substrate 11; an indium tin oxide layer 12 positioned on the lower surface of the substrate 11; a black matrix 13 positioned on the upper surface of the substrate 11; formed between adjacent black matrices 13 and covering the The color resin 14 on the edge of the adjacent black matrix 13; the protection layer 15 covering all the black matrix and color resin; the columnar spacer 16 formed on the protection layer 15 to maintain the thickness of the liquid crystal cell of the liquid crystal display. the

In the above-mentioned color filter substrate, the color resin 14 covers the edge of the black matrix 13, so that a level difference is formed between the color resin 14 and the black matrix 13, that is, on the substrate 11, the thickness of the overlapped part of the color resin 14 and the black matrix 13 is greater than that The thickness of the overlapped portion thus results in uneven thickness of the film composed of the color resin 14 and the black matrix 13 . the

In order to prevent the adverse effects caused by the inhomogeneity of this film thickness on the subsequent formation of the columnar spacers 16, a protective layer 15 is formed on the colored resin 14 and the black matrix 13, which can eliminate the adverse effects, but increases the color. The manufacturing cost of the membrane substrate. the

Utility model content

Embodiments of the present invention provide a color filter substrate, a liquid crystal panel including the color filter substrate, and a display device, which not only eliminates the step difference between the color resin and the black matrix, but also reduces the manufacturing cost of the color filter substrate. the

In order to achieve the above object, the embodiments of the present utility model adopt the following technical solutions:

A color filter substrate, comprising: a substrate, an indium tin oxide layer, a colored resin layer, and a black matrix; the colored resin layer is formed on the first surface of the substrate, and the colored resin layer includes three different colors A resin film, wherein a resin film of one color covers the edge of an adjacent resin film of another color to form an overlapping portion; the black matrix is perpendicular to the first surface of the substrate and faces the color resin In the direction of the layer, it is located above the colored resin layer and blocks the overlapped portion. the

A liquid crystal panel, comprising the above-mentioned color filter substrate. the

A display device includes the above-mentioned liquid crystal panel. the

In the color filter substrate provided by the embodiments of the present invention, the liquid crystal panel including the color filter substrate, and the display device, since there is an overlapping portion between adjacent resin films of different colors, and the black matrix is in the overlapping portion The overlapping portion is blocked from above, so that the protruding structure composed of the black matrix and the corresponding overlapping portion can be used as a spacer to control the thickness of the liquid crystal cell, eliminating the steps of forming a protective layer and a columnar spacer in the prior art, Therefore, not only the level difference between the color resin and the black matrix is eliminated, but also the manufacturing cost of the color filter substrate is reduced. the

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work. the

FIG. 1 is a schematic cross-sectional view of a color filter substrate in the prior art;

Figure 2 is a schematic cross-sectional view of a color filter substrate provided by an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of another color filter substrate provided by an embodiment of the present invention. the

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention. the

The embodiment of the present invention provides a color filter substrate, as shown in Figure 2, the color filter substrate includes: a substrate 21, an indium tin oxide layer 22, a color resin layer 23 and a black matrix 24; the indium tin oxide layer 22 can Formed on the second surface 212 of the substrate 21; the colored resin layer 23 is formed on the first surface 211 of the substrate 21, and the colored resin layer 23 includes resin films of three different colors (231, 232, 233). Resin films of the same color have the same hatching and reference numerals in FIG. 2 . the

Wherein, a resin film of one color covers the edge of an adjacent resin film of another color to form an overlapping portion. For example, the resin film 233 with the third color is adjacent to the resin film 232 with the second color, and the resin film 233 covers the resin film 232 to form an overlapping portion B; The colored resin films 231 are adjacent to each other, and the resin films 233 cover the resin films 231 to form overlapping portions C. As shown in FIG. In addition, the resin film 232 covers the resin film 231 to form an overlapping portion A. As shown in FIG. the

The black matrix 24 is located above the colored resin layer 23 in the direction D1 perpendicular to the first surface 211 of the substrate 21 and from the first surface 211 toward the colored resin layer 23 , and blocks the The overlapping part prevents light leakage from the overlapping part. the

When the ITO layer 22 is formed on the second surface 212 of the substrate 21 as shown in FIG. 2 , the black matrix 24 directly covers the overlapping portion to prevent light leakage from the overlapping portion. Since the combination of the black matrix 24 and the overlapping portion covered (shielded) by the black matrix has a certain height, this combination is used as a spacer to control the thickness of the liquid crystal cell. the

In the color filter substrate provided by the embodiment of the present invention, since there is an overlapping portion between adjacent resin films of different colors, and the black matrix blocks the overlapping portion above the overlapping portion, the black matrix and the The protruding structure formed by the corresponding overlapping parts can be used as a spacer to control the thickness of the liquid crystal cell, which saves the steps of forming a protective layer and a columnar spacer in the prior art. Therefore, it not only eliminates the gap between the color resin and the black matrix The level difference also reduces the manufacturing cost of the color filter substrate. the

In the color filter substrate provided by the embodiment of the present invention, as shown in FIG. 3 , the color resin layer 31 can be covered with an indium tin oxide layer 32 , and the black matrix 33 is formed on the indium tin oxide layer 32 . the

Parts in FIG. 3 having the same reference numerals as those in FIG. 2 have the same meanings. the

The overlapping width d of the overlapping portion of the color filter substrate may not be greater than 15% of the width of the resin film along the overlapping width direction D2, so as to minimize the area of the opaque region. And the cross-sectional shape of the overlapping portion along the overlapping width direction D2 is a rectangle, a square or a parallelogram, or other shapes known to those skilled in the art. The cross-sectional shape of the overlapping portion shown in FIG. 2 and FIG. 3 along the overlapping width direction is a rectangle. the

The thickness of the black matrix in the above-mentioned color filter substrate can be twice the thickness of the resin film, so as to ensure that the black matrix can completely cover the overlapped part and prevent light leakage. the

In addition, the resin films of three different colors in the color filter substrate may be red resin films, green resin films and blue resin films respectively, or resin films of other colors used by those skilled in the art. the

The manufacturing process of the color filter substrate shown in Figure 2 is as follows:

1. Form an indium tin oxide layer 22 on the lower surface 212 of the substrate 21 . the

2. Form a red resin layer on the upper surface 211 of the substrate 21 , and form a red resin film 231 by performing a mask etching process on the red resin layer. the

3. Form a green resin layer on the upper surfaces of the substrate 21 and the red resin film 231 , and form the green resin film 232 by performing a mask etching process on the green resin layer. The green resin film 232 covers the edge on one side of the adjacent red resin film 231 to form an overlapping portion A. As shown in FIG. the

4. Form a blue resin layer on the upper surfaces of the substrate 21 , the red resin film 231 and the green resin film 232 , and form the blue resin film 233 by performing a mask etching process on the blue resin layer. The blue resin film 233 covers one edge of the adjacent red resin film 231 and green resin film 232 to form overlapping portions (B, C). the

5. Form a black matrix material layer on the upper surfaces of the substrate 21, the red resin film 231, the green resin film 232, and the blue resin film 233. By performing a mask etching process on the black matrix material layer, only the overlapped areas are left. The black matrix material layer on part forms the black matrix 24 . the

The fabrication sequence of the red resin film 231 , the green resin film 232 and the blue resin film 233 in the above method is not limited to the described sequence, and other sequences known to those skilled in the art may also be used. the

The manufacturing process of the color filter substrate shown in Figure 3 is basically the same as the manufacturing process of the color filter substrate described above, the difference is that the indium tin oxide layer is not formed on the second surface of the substrate. After the layer 31 is formed, an indium tin oxide layer 32 is formed on the colored resin layer 31, and finally a black matrix 33 is formed on the indium tin oxide layer 32, so that the black matrix 33 is perpendicular to the first surface of the substrate and towards the colored resin layer 32. In the direction D1, it is located above the colored resin layer 31 and covers the overlapping portion. the

The embodiment of the present invention also provides a liquid crystal panel, which includes the above-mentioned color filter substrate. the

In addition, an embodiment of the present utility model further provides a display device, which includes the above-mentioned liquid crystal panel. the

Since the low-cost color filter substrate provided by the embodiment of the present invention is used in the liquid crystal panel and the display device provided by the embodiment of the present invention, the cost of the liquid crystal panel and the display device is reduced. the

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims. the

Claims (9)

1. a color membrane substrates comprises: substrate, indium tin oxide layer, color resin layer and black matrix; Said color resin layer is formed on the first surface of said substrate, and said color resin layer comprises the resin film of three kinds of different colours, it is characterized in that,

A kind of resin film of color covers the edge of resin film adjacent, another kind of color, forms the overlapping part;

Said black matrix is positioned at the top of said color resin layer perpendicular to said substrate first surface and on the direction of said color resin layer, and blocks said overlapping part.

2. color membrane substrates according to claim 1 is characterized in that, said indium tin oxide layer is formed on the second surface of said substrate, and said black matrix covers on the said overlapping part.

3. color membrane substrates according to claim 1 is characterized in that said indium tin oxide layer covers said color resin layer, and said black matrix is formed on the said indium tin oxide layer.

4. color membrane substrates according to claim 1 is characterized in that, the said overlapping width that overlaps part is not more than said resin film along 15% of the width of said overlapping Width.

5. color membrane substrates according to claim 4 is characterized in that, the said cross sectional shape that overlaps the said overlapping Width in part edge is rectangle, square or parallelogram.

6. color membrane substrates according to claim 1 is characterized in that, the thickness of said black matrix is the twice of the thickness of said resin film.

7. according to each described color membrane substrates of claim 1～6, it is characterized in that the resin film of said three kinds of different colours is respectively red resin film, green resin film and blue resins film.

8. a liquid crystal panel is characterized in that, comprises like each described color membrane substrates of claim 1 to 7.

9. a display device is characterized in that, comprises liquid crystal panel as claimed in claim 8.

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