CN103235434A - Display panel and fabricating method thereof, color film substrate, array substrate and display device - Google Patents

Abstract

The invention provides a display panel and a fabricating method thereof, as well as a color film substrate, an array substrate and a display device. By arranging spacers between a first substrate and a second substrate, wherein spherical spacers are arranged at preset positions outside an effective display area, the first substrate and the second substrate can ensure that the thickness of a whole substrate box in the vacuum paired box process is uniform, badness in peripheral Mura can be effectively solved, and the image quality is improved accordingly.

Description

Display panel and manufacturing method thereof, color filter substrate, array substrate and display device

technical field

The present invention relates to the field of display, and specifically relates to a display panel and a manufacturing method thereof, an array substrate, a color filter substrate and a display device.

Background technique

At present, the liquid crystal in LCD (liquid crystal display) products is mainly driven by the electric field between the array substrate and the color filter substrate. When the thickness of the cell is not uniform, a uniform electric field cannot be formed between the array substrate and the color filter substrate. The liquid crystal orientation is inconsistent, resulting in poor picture quality.

For LCD, in order to improve the display quality, columnar spacers are usually provided in the effective display area between the array substrate and the color filter substrate. Considering the cutting factor, there is no columnar spacer outside the effective display area. When aligning the box, the Panel (Display panel) The inside is vacuum, the outside is atmospheric pressure, and there is an air pressure difference inside and outside the Panel, which causes the substrate in the surrounding area of the Panel to warp. As shown in Figure 1, the thickness of the surrounding box of the Panel is higher than that of the effective display area, resulting in surrounding Mura ( blemishes) have seriously affected the quality of the picture. In Figure 1, the mark 1 refers to the color filter substrate, the mark 2 refers to the array substrate, the mark 3 refers to the columnar spacer, and the mark 4 refers to the liquid crystal , Mark 5 refers to the frame glue.

In the prior art, in order to maintain the uniformity of the box thickness between the two substrates, it is solved by setting a dummy (frame glue) opening or setting a columnar spacer around the effective display area. For the dummy opening, considering the thinning factor of the Panel, generally two openings are opened in the long side direction of a part of the Glass (substrate) (for example, 1/4 substrate is the Q-panel), as shown in Figure 2 (in Figure 2 , logo 6 refers to Q-panelDummy, logo 7 refers to Glass dummy), but the length of the opening should not be too large to prevent scratches on the substrate after thinning and acid leakage or increasing the difficulty of the process. In a very short period of time, the airflow cannot quickly enter each Panel position, so the effect cannot be optimal. Moreover, after the opening method is adopted, glue application is required for thinning, which increases the difficulty of the process and the risk of scratching the substrate. ; As for setting columnar spacers on the periphery of the effective display area, the position of the columnar spacers will affect the cutting, resulting in small breakage or burrs in the Panel, which reduces the yield of the Panel.

Contents of the invention

The present invention provides a display panel and its manufacturing method, a color filter substrate, an array substrate and a display device, so that the color filter substrate and the array substrate can maintain the uniformity of the thickness of the entire substrate box in the vacuum box alignment process, which can effectively solve the peripheral mura defect , thereby improving the image quality.

The present invention provides scheme as follows:

An embodiment of the present invention provides a display panel, including a first substrate and a second substrate oppositely arranged, the display panel includes a plurality of sub-display panels, wherein the sub-display panels include an effective display area, and it is characterized in that the display The panel also includes:

a spacer disposed between the first substrate and the second substrate;

Wherein, a spherical spacer is provided at a preset position outside the effective display area.

Preferably, the preset position outside the effective display area includes the periphery of the effective display area.

Preferably, the preset position outside the effective display area includes between adjacent sub-display panels.

Preferably, the preset position outside the effective display area includes the periphery of the first substrate and the second substrate.

Preferably, the first substrate includes a color filter substrate, and the second substrate includes an array substrate.

Preferably, the spherical spacers are formed in the color filter substrate and/or the array substrate.

Preferably, the diameter of the spherical spacer is the same as the thickness of the box at the position where the spherical spacer is located.

The embodiment of the present invention also provides a method for preparing a display panel. By using a shielding mask, the position of the spherical spacer is a non-shielding area, and other areas of the display panel are a shielding area, and the spherical spacer Spray at preset locations within non-occluded areas.

The embodiment of the present invention also provides a color filter substrate, including an effective display area, and further includes:

The spherical spacer is arranged at a predetermined position outside the effective display area.

An embodiment of the present invention also provides an array substrate, including an effective display area, and further including:

The spherical spacer is arranged at a predetermined position outside the effective display area.

An embodiment of the present invention further provides a display device, and the display device may specifically include the display panel provided by the foregoing embodiments of the present invention.

It can be seen from the above that, in the display panel and its manufacturing method, color filter substrate, array substrate and display device provided by the present invention, spacers are provided between the first substrate and the second substrate, wherein, in the effective display At the preset position outside the area, a spherical spacer is set, so that the first substrate and the second substrate can maintain the uniformity of the thickness of the entire substrate box during the vacuum box alignment process, which can effectively solve the peripheral mura defect and improve the picture quality.

Description of drawings

Figure 1 is a schematic diagram of the prior art;

Fig. 2 is a schematic diagram 2 of the prior art;

FIG. 3 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a shading mask involved in an embodiment of the present invention;

Fig. 5 is a schematic diagram of a spherical spacer sprayed on a substrate in an embodiment of the present invention;

FIG. 6 is a schematic diagram of a manufacturing process of a display panel provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

An embodiment of the present invention provides a display panel, including a first substrate 1 and a second substrate 2 disposed opposite to each other. The display panel includes a plurality of sub-display panels, wherein the sub-display panels include an effective display area, as shown in FIG. 3 Shown, the display panel specifically also includes:

A spacer disposed between the first substrate 1 and the second substrate 2;

in,

A spherical spacer 8 is arranged at a preset position outside the effective display area.

The display panel provided by the present invention can maintain the thickness uniformity of the entire substrate box between the first substrate 1 and the second substrate 2 in the vacuum box alignment process, can effectively solve peripheral mura defects, and further improve picture quality.

In addition, because in the embodiment of the present invention, the spherical spacer is formed at a predetermined position outside the effective display area to maintain the thickness of the box, and because in the embodiment of the present invention, the spherical spacer can be formed by spraying technology, therefore Therefore, the substrate included in the display panel provided by the embodiments of the present invention will not be damaged or burred, thereby ensuring the yield of the display panel.

As shown in FIG. 3 , the display panel provided by the embodiment of the present invention may specifically include columnar spacers 3 , liquid crystals 4 , Frame glue 5 and so on.

In the embodiment of the present invention, the preset position outside the effective display area may specifically be the periphery of the effective display area.

In addition, in the embodiment of the present invention, the preset position outside the effective display area may specifically be between adjacent sub-display panels.

At the same time, in the embodiment of the present invention, the preset position outside the effective display area may specifically include the periphery of the first substrate and the second substrate.

Specifically, in the embodiment of the present invention, the preset position outside the effective display area may specifically be the Q-panel, the periphery of the Glass, and the like.

In the embodiment of the present invention, the width of the spherical spacer 8 arranged on the periphery of the effective display area between the panels can be as small as the distance between the outer edges of the frame glue between adjacent panels, and as large as the distance between the peripheries of the effective display areas of adjacent panels. distance.

Meanwhile, the diameter of the spherical spacer 8 involved in the embodiment of the present invention may be the same as the thickness of the box at the position where the spherical spacer 8 is located.

The spherical spacer 8 involved in the embodiment of the present invention may be formed in the color filter substrate and/or the array substrate, or may be formed separately in at least one of the color filter substrate and the array substrate.

That is, the first substrate 1 involved in the embodiment of the present invention may specifically be a color filter substrate, and the second substrate may specifically be an array substrate. Alternatively, the first substrate 1 may specifically be an array substrate, and the second substrate may specifically be a color filter substrate.

Then, the embodiment of the present invention can also provide a color filter substrate, and the color filter substrate can specifically include:

In the effective display area, a spherical spacer 8 is arranged at a preset position outside the effective display area.

At the same time, the embodiment of the present invention can also provide an array substrate, and the array substrate can specifically include:

In the effective display area, a spherical spacer 8 is arranged at a preset position outside the effective display area.

It can be understood that, in addition to the spherical spacer 8 involved in the above-mentioned embodiments of the present invention, the color filter substrate and the array substrate provided by the above-mentioned embodiments of the present invention may also include the color filter substrate and the array substrate to realize their functions. Additional layers and devices required. No more details here.

In the manufacturing process of the display panel provided by the embodiment of the present invention, the first substrate 1, the second substrate 2, and the columnar spacers 3 in the effective display area of the substrate can be sequentially prepared by using mature technology, and then the Cell The PI (orientation film) and Rubbing (orientation) processes of the process, and then enter the ODF process of the Cell.

The ODF process involved in the embodiment of the present invention may specifically include the spraying of the spherical spacer 8, the coating of the frame glue 5, the liquid crystal dripping, the inversion process, the UV curing and the main curing process, which can be abbreviated as the inversion process.

In addition, according to the actual situation, if the sealant 5 is coated on the array substrate, the spherical spacer 8 can be sprayed on the periphery of the effective display area of the color filter substrate; if the sealant 5 is coated on the color filter substrate, the spherical spacer 8 can be sprayed on the periphery of the effective display area of the array substrate.

Since the spraying position of the spherical spacer 8 is selective, a shielding mask (Mask) needs to be provided above the substrate, and the material of the shielding mask can be glass, plastic, metal or the like.

The shading mask involved in the embodiment of the present invention can be specifically shown in Figure 4, wherein the shaded area 9 is a solid area, which is used to cover the effective display area (AA) in the substrate. Considering the spraying error, the shading area It can extend 0.1-0.8mm outward from the effective display area. The white area 10 is a hollow area, and the spherical spacer 8 enters the substrate through the hollow area. The schematic diagram of the spherical spacer 8 sprayed on the substrate is shown in Figure 5. Some production lines have equipment for spraying spherical spacers 8, so it is only necessary to add a shielding mask as shown in Figure 4 to the equipment for spraying spherical spacers 8.

Then, the embodiment of the present invention can also provide a method for preparing a display panel. By using a mask, the position of the spherical spacer 8 is a non-shielding area, and other areas of the display panel are a shielding area, and the spherical spacer Object 8 is sprayed at the preset position in the non-blocking area.

In the following, the sealant is coated on the array substrate (that is, the second substrate 2 is the array substrate) and the spherical spacer 8 is sprayed on the color filter substrate (that is, the first substrate 1 is the color filter substrate) for further description. The detailed process As shown in Figure 6.

Step 61: After the Rubbing process is completed, the array substrate is subjected to a sealant coating process, and at the same time, the color filter substrate is subjected to a spherical spacer spraying process and a liquid crystal dripping process.

Step 62: On the basis of completing Step 1, perform a vacuum box alignment process.

Step 63: On the basis of completing step 2, perform a UV pre-curing process.

Step 64: On the basis of completing Step 3, perform the main curing process.

Through the above steps, the display panel provided by the embodiment of the present invention can be formed.

An embodiment of the present invention also provides a display device, which may specifically include the display panel provided by the above-mentioned embodiments of the present invention.

The display device may specifically be a display device such as a liquid crystal panel, a liquid crystal television, a liquid crystal display, an OLED panel, an OLED display, a plasma display, or electronic paper.

In the display panel and its manufacturing method, color filter substrate, array substrate and display device provided by the present invention, a spacer is provided between the first substrate and the second substrate, wherein, at a preset position outside the effective display area, a There are spherical spacers, so that the first substrate and the second substrate can maintain the uniformity of the thickness of the entire substrate box in the vacuum box-to-box process, which can effectively solve the peripheral mura defect and improve the picture quality.

The above is only the embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as Be the protection scope of the present invention.

Claims (11)

1. A display panel, comprising a first substrate and a second substrate oppositely arranged, the display panel comprising a plurality of sub-display panels, wherein the sub-display panels comprise an effective display area, characterized in that the display panel further comprises: a spacer disposed between the first substrate and the second substrate; in, A spherical spacer is arranged at a preset position outside the effective display area. 2. The display panel according to claim 1, wherein the preset position outside the effective display area includes a periphery of the effective display area. 3. The display panel according to claim 1, wherein the preset position outside the effective display area includes between adjacent sub-display panels. 4 . The display panel according to claim 1 , wherein the preset position outside the effective display area includes peripheries of the first substrate and the second substrate. 5. The display panel according to claim 1, wherein the first substrate comprises a color filter substrate, and the second substrate comprises an array substrate. 6. The display panel according to claim 5, wherein the spherical spacers are formed in the color filter substrate and/or the array substrate. 7 . The display panel according to claim 1 , wherein the diameter of the spherical spacer is the same as the cell thickness at the position where the spherical spacer is located. 8. A method for preparing a display panel, characterized in that, by using a shielding mask, the position of the spherical spacer is a non-shielding area, and other areas of the display panel are a shielding area, and the spherical spacer is sprayed at a preset position within the non-occluded area. 9. A color filter substrate, comprising an effective display area, characterized in that it comprises: The spherical spacer is arranged at a predetermined position outside the effective display area. 10. An array substrate, comprising an effective display area, characterized in that it comprises: The spherical spacer is arranged at a predetermined position outside the effective display area. 11. A display device, comprising the display panel according to any one of claims 1-7.

Images