WO2017121011A1

WO2017121011A1 - Curved display panel and pixel structure thereof

Info

Publication number: WO2017121011A1
Application number: PCT/CN2016/074513
Authority: WO
Inventors: 付如海
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2016-01-13
Filing date: 2016-02-25
Publication date: 2017-07-20
Also published as: CN105467705B; CN105467705A

Abstract

A curved display panel and a pixel structure. The curved display panel (50) comprises: multiple pixel units (60), where each pixel unit (60) comprises three subpixels (62) in a parallel arrangement; an upper substrate (70); a lower substrate (80); a liquid crystal layer (25) provided between the upper substrate (70) and the lower substrate (80); and multiple spacers (27). The lower substrate (80) comprises multiple TFT transistors (82) and a color resist layer (84). The color resist layer (84) comprises a first color resist (86), a second color resist (87), and a third color resist (88) respectively corresponding to the three subpixels (62) in the parallel arrangement, where the first color resist (86) also is arranged above a gate line area (90) of the three subpixels (62), and the spacers (27) are arranged on the first color resist (86) in the gate line area (90).

Description

Curved display panel and its pixel structure

Technical field

The present invention relates to a curved display panel and a pixel structure thereof, and more particularly to a curved display panel having a fixed liquid crystal layer thickness and a pixel structure thereof.

Background technique

Existing curved liquid crystal displays (LCDs) are obtained by bending a flat LCD. In order to avoid a series of problems caused by the misalignment of the upper and lower substrates when the flat LCD is curved into a curved surface (such as light leakage or reducing the aperture ratio). Generally, the lower substrate of the LCD can be designed as a color filter integrated transistor (Color) Filter On Array, COA), COA is a technique for placing RGB color resist on a CF substrate on a TFT array substrate to prevent misalignment of the upper and lower substrates.

1 and 2, FIG. 1 is a plan view of a conventional pixel structure, FIG. 2 is a plan view of a pixel structure on a conventional COA substrate, and FIG. 3 is a cross-sectional view taken along line AA' of FIG. The conventional planar LCD includes an upper substrate 10, a COA substrate 20, and a spacer 27 for partitioning the liquid crystal layer 25. The COA substrate 20 has red, green and blue color resists RGB, wherein the red, green and blue color resists RGB overlap each other. The spacers 27 are disposed on the black matrix 12 on the upper substrate 10, and one end is placed against the red, green, and blue color resists RGB.

4 is a cross-sectional view showing a state in which a conventional pixel structure is misaligned. As shown in FIG. 4, when the planar LCD is bent, the substrate 10 and the COA substrate 20 will be misaligned. In some areas of the panel, such a deviation may cause the spacer 27 which should be in the flat region of the color resist to deviate to Top in the data line area D where the two color resists overlap. The topography of the color resisting overlap area is often uneven, which may cause a problem of uneven thickness of the liquid crystal cell, which seriously affects the display effect.

technical problem

It is an object of the present invention to provide a curved display panel that is designed to flatten the color resistive regions that are held by the spacers through the design of the color resist layer, so that the thickness of the liquid crystal cell remains uniform when the substrate is bent.

Another object of the present invention is to provide a pixel structure that is designed to flatten the color resistive region that the spacer is held by the first color resist, so that the thickness of the liquid crystal cell is kept uniform when the substrate is bent.

Technical solution

In order to solve the above problems, a preferred embodiment of the present invention provides a curved display panel comprising a plurality of pixel units, each pixel unit comprising three sub-pixels arranged in parallel, the curved display panel further comprising: an upper substrate; The lower substrate includes a plurality of TFT switch tubes and a color resist layer, each sub-pixel corresponding to a TFT switch tube, and the color resist layer corresponding to the three parallel-arranged sub-pixels respectively includes a first color resist and a second color resist And a third color resist, wherein the first color resist is further located on a gate line region of the three sub-pixels; a liquid crystal layer is disposed between the upper substrate and the lower substrate; and a plurality of spacers, And disposed on the first color resistance of the gate line region.

In the curved display panel of the preferred embodiment of the present invention, the first color resist located on the gate line region of the three sub-pixels has a flat surface.

In the curved display panel of the preferred embodiment of the present invention, the curved display panel further includes a black matrix layer, and the black matrix layer is disposed on the lower substrate.

In the curved display panel of the preferred embodiment of the present invention, the curved display panel further includes a black matrix layer, and the black matrix layer is disposed on the upper substrate. In this embodiment, the plurality of spacers are a plurality of columnar photoresist spacers, and the plurality of columnar photoresist spacers are disposed between the black matrix layer and the first color resistor. Further, the plurality of columnar photoresist spacers have the same height for fixing the thickness of the liquid crystal layer.

In the curved display panel of the preferred embodiment of the present invention, the first color resistance is red, blue or green color resistance.

Similarly, in order to solve the above problems, another preferred embodiment of the present invention provides a pixel structure including three sub-pixels arranged in parallel, the pixel structure further comprising: an upper substrate; and a lower substrate including three TFT switches And a first color resist, a second color resist, and a third color resist corresponding to the three sub-pixels, wherein the first color resist is further located on a gate line region of the three TFT switch tubes; Provided between the upper substrate and the lower substrate; and a plurality of spacers disposed on the first color resistance of the gate line region.

In the pixel structure of the preferred embodiment of the present invention, the first color resist located on the gate line region of the three sub-pixels has a flat surface.

In the pixel structure of the preferred embodiment of the present invention, the first color resistance is a red, blue or green color resistance.

Beneficial effect

Compared with the prior art, the present invention ensures that the spacer is offset and does not resist the two colors by forming a first color resist on the gate line region and placing the spacer on the first color resist. The junction of the resistors ensures the uniformity of the thickness of the liquid crystal cell and improves the display effect of the curved display.

DRAWINGS

1 is a top plan view of a conventional pixel structure;

2 is a top plan view of a pixel structure on a conventional COA substrate;

Figure 3 is a cross-sectional view taken along line AA' of Figure 1;

4 is a cross-sectional view showing a misalignment of a conventional pixel structure;

5 is a top plan view of a curved display panel according to a preferred embodiment of the present invention;

6 is a top plan view of a single pixel structure in accordance with a preferred embodiment of the present invention;

7 is a top plan view of a pixel unit on a lower substrate according to a first selected embodiment;

Figure 8 is a cross-sectional view along line BB' of Figure 6 in accordance with a first alternative embodiment;

9 is a top plan view of a pixel unit on a lower substrate according to a second selected embodiment;

Figure 10 is a top plan view of a pixel unit on a lower substrate in accordance with a third alternative embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

The following description of the various embodiments is provided to illustrate the specific embodiments of the invention. The directional terms mentioned in the present invention, such as "upper", "lower", "before", "after", "left", "right", "inside", "outside", "side", etc., are merely references. Attach the direction of the drawing. Therefore, the directional terminology used is for the purpose of illustration and understanding of the invention.

In the figures, structurally similar elements are denoted by the same reference numerals.

5 and FIG. 6, FIG. 5 is a top plan view of a curved display panel according to a preferred embodiment of the present invention, and FIG. 6 is a top view of a single pixel structure according to a preferred embodiment of the present invention. The curved display panel 50 of the preferred embodiment of the present invention includes a plurality of pixel units 60. For clarity of illustration, only three pixel units 60(1), 60(2), and 60(3) are illustrated, wherein the pixel unit 60 ( 1) Located on the left side of the curved display panel 50, the pixel unit 60 (2) Located in the middle of the curved display panel 50, the pixel unit 60(3) is located on the right side of the curved display panel 50. Referring to FIG. 6, each pixel unit 60 includes three sub-pixels 62 arranged in parallel. Specifically, each of the three sub-pixels 62 is a red, green, and blue sub-pixel.

7 and FIG. 8, FIG. 7 is a plan view of a pixel unit according to a first alternative embodiment on a lower substrate, and FIG. 8 is a cross-sectional view of FIG. 6 taken along line BB' according to the first alternative embodiment. The curved display panel 50 of the present embodiment further includes an upper substrate 70, a lower substrate 80, and a liquid crystal layer 25 disposed between the upper substrate 70 and the lower substrate 80.

As shown in FIG. 7, the lower substrate 80 includes a plurality of scan lines 22 and data lines 24, a plurality of TFT switch tubes 82, and a color resist layer 84. The color resist layer 84 is disposed on the plurality of scan lines 22 and data lines 24 and Above the plurality of TFT switch tubes 82. Each of the sub-pixels 62 corresponds to a TFT switch 84, and the color resist layer 84 includes a first color resist 86, a second color resist 87, and a third color resist 88 corresponding to the three parallel-arranged sub-pixels 62, respectively. The first color resist 86 is also located on the gate line region 90 of the three sub-pixels 62. It should be noted that the first color resist 86 may be a red, blue or green color resist, for example, a red color resist, and the second color resist 87 and the third color resist 88 may be blue and green color resists, respectively. .

As shown in FIG. 8 , the curved display panel 50 of the present embodiment further includes a plurality of spacers 27 disposed on the first color resist 86 of the gate line region 90 . Specifically, the first color resist 86 located on the gate line region 90 of the three sub-pixels 62 has a flat surface 92.

In the embodiment, the curved display panel 50 further includes a black matrix layer 12 disposed on the upper substrate 70. In this embodiment, the plurality of spacers 27 are a plurality of columnar photoresist spacers (Photo The plurality of columnar photoresist spacers are disposed between the black matrix layer 12 and the first color resistor 86. Further, the plurality of columnar photoresist spacers have the same height for fixing the thickness T of the liquid crystal layer 25.

However, in other embodiments, the black matrix layer 12 may also be disposed on the lower substrate 80, such as above the color resist layer 84.

9 and FIG. 10, FIG. 9 is a plan view of a pixel unit on a lower substrate according to a second embodiment, and FIG. 10 is a top view of the pixel unit on the lower substrate according to the third alternative embodiment. As shown in FIG. 9, the color resist layer 84 includes a first color resist 86, a second color resist 87, and a third color resist 88 corresponding to the three parallel arrays of sub-pixels, respectively. A color resist 86 is also located on the gate line region 90 of the three sub-pixels 62. In the second embodiment, the first color resist 86 is located between the second color resist 87 and the third color resist 88. As shown in FIG. 10, the color resist layer 84 includes a first color resist 86, a second color resist 87, and a third color resist 88 corresponding to the three parallel arrays of sub-pixels, respectively. A color resist 86 is also located on the gate line region 90 of the three sub-pixels 62. In the third embodiment, the first color resist 86 is located to the right of the second color resist 87. It should be noted that the curved display panel 50 of the present invention can simultaneously have a plurality of pixel units 60 of the three embodiments.

As shown in FIG. 5 and FIG. 8, if the pixel unit 60 shown in FIG. 8 is the pixel unit 60 (1) on the left side of the curved display panel 50 or the pixel unit 60 (3) on the right side of the curved display panel 50, A plurality of spacers 27 are located on the flat surface 92 of the first color resist 86 on the gate line region 90, so that even if the upper substrate 70 and the lower substrate 80 are offset, the thickness of the liquid crystal cell is not generated. Uniform problem.

The pixel structure of a preferred embodiment of the present invention is explained below. Referring to FIG. 6 to FIG. 8 , the pixel structure of the embodiment includes three sub-pixels 62 arranged in parallel, and the pixel structure further includes: an upper substrate 70 , a lower substrate 80 , and the upper substrate 70 and the lower surface A liquid crystal layer 25 and a plurality of spacers 27 are interposed between the substrates 80. The lower substrate 70 includes three TFT switch tubes 82 and a first color resist 86, a second color resist 87 and a third color resist 88 corresponding to the three sub-pixels 62, wherein the first color resist 86 is also located in the third The gate line region 90 of the TFT switch transistor 82. The plurality of spacers 27 are disposed on the first color resistor 86 of the gate line region 90.

Specifically, the first color resist 86 located on the gate line region 90 of the three sub-pixels 62 has a flat surface 92, so even if the upper substrate 70 and the lower substrate 80 are offset, it will not There is a problem that the thickness of the liquid crystal cell is not uniform.

It should be noted that the first color resist 86 may be a red, blue or green color resist, for example, a red color resist, and the second color resist 87 and the third color resist 88 may be blue and green color resists, respectively. .

In summary, the present invention ensures that the spacer 27 is not offset when the spacer 27 is offset by forming the first color resist 86 on the gate line region 90 and placing the spacer 27 on the first color resistor 86. The junction of the two color resists is maintained, and the uniformity of the thickness of the liquid crystal cell is ensured, which improves the display effect of the curved display.

While the present invention has been described above in terms of a preferred embodiment, the preferred embodiments are not intended to limit the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope defined by the claims.

Claims

A curved display panel includes a plurality of pixel units, each of which includes three sub-pixels arranged in parallel, and the curved display panel further includes:

Upper substrate

The lower substrate includes a plurality of TFT switch tubes and a color resist layer, each sub-pixel corresponding to a TFT switch tube, the color resist layer is disposed on the plurality of TFT switch tubes, and the color resist layer corresponds to the third The sub-pixels arranged in parallel include a first color resist, a second color resist, and a third color resist, wherein the first color resist is further located on a gate line region of the three sub-pixels;

a liquid crystal layer disposed between the upper substrate and the lower substrate;

A plurality of columnar photoresist spacers are disposed on the first color resist of the gate line region.
A curved display panel includes a plurality of pixel units, each of which includes three sub-pixels arranged in parallel, and the curved display panel further includes:

Upper substrate

The lower substrate includes a plurality of TFT switch tubes and a color resist layer, each sub-pixel corresponding to a TFT switch tube, and the color resist layer corresponding to the three parallel-arranged sub-pixels respectively includes a first color resist and a second color resist And a third color resist, wherein the first color resist is further located on a gate line region of the three sub-pixels;

a liquid crystal layer disposed between the upper substrate and the lower substrate;

A plurality of spacers are disposed on the first color resistance of the gate line region.
The curved display panel according to claim 2, wherein said first color resist located on said gate line region of said three sub-pixels has a flat surface.
The curved display panel according to claim 2, wherein the curved display panel further comprises a black matrix layer, and the black matrix layer is disposed on the lower substrate.
The curved display panel according to claim 2, wherein the curved display panel further comprises a black matrix layer, and the black matrix layer is disposed on the upper substrate.
The curved display panel according to claim 5, wherein the plurality of spacers are a plurality of columnar photoresist spacers, and the plurality of columnar photoresist spacers are disposed between the black matrix layer and the first color resist .
The curved display panel according to claim 6, wherein said plurality of columnar photoresist spacers have the same height for fixing a thickness of said liquid crystal layer.
The curved display panel according to claim 2, wherein the first color resist is a red, blue or green color resist.
A pixel structure includes three sub-pixels arranged in parallel, wherein the pixel structure further includes:

Upper substrate

The lower substrate includes three TFT switch tubes and a first color resist, a second color resist, and a third color resist corresponding to the three sub-pixels, wherein the first color resist is further located on the gate of the three TFT switch tubes On the polar line area;

a liquid crystal layer disposed between the upper substrate and the lower substrate;

A plurality of spacers are disposed on the first color resistance of the gate line region.
The pixel structure according to claim 9, wherein said first color resist located on said gate line region of said three sub-pixels has a flat surface.
The pixel structure of claim 9 wherein said first color resist is a red, blue or green color resist.
The pixel structure according to claim 9, wherein said pixel structure further comprises a black matrix layer, said black matrix layer being disposed on said lower substrate.
The pixel structure according to claim 9, wherein said pixel structure further comprises a black matrix layer, said black matrix layer being disposed on said upper substrate.
The pixel structure according to claim 13, wherein the plurality of spacers are a plurality of columnar photoresist spacers, and the plurality of columnar photoresist spacers are disposed between the black matrix layer and the first color resistor.
The pixel structure according to claim 14, wherein said plurality of columnar photoresist spacers have the same height for fixing a thickness of said liquid crystal layer.