WO2020191863A1

WO2020191863A1 - Touch display panel and touch display device

Info

Publication number: WO2020191863A1
Application number: PCT/CN2019/086039
Authority: WO
Inventors: 郑净远
Original assignee: 深圳市华星光电半导体显示技术有限公司
Priority date: 2019-03-25
Filing date: 2019-05-08
Publication date: 2020-10-01
Also published as: CN110045867A; CN110045867B

Abstract

A touch display panel and a touch display device, both of which comprises a display panel (11), a cover plate (12), and support structures (13). The display panel (11) comprises pixels (111) and black matrices (112). The cover plate (12) is disposed on the display panel (11). The support structures (13) are used for supporting the cover plate (12), and the support structures (13) are formed on the side of the cover plate (12) facing the display panel (11). The support structures (13) are arranged corresponding to the black matrices (112). By forming support structures (13) on the cover plate (12), a minimum gap value between the glass cover plate (12) and the display panel (11) is ensured.

Description

Touch display panel and touch display device

Technical field

This application relates to a touch technology, in particular to a touch display panel and a touch display device.

Background technique

At present, the method of adding a capacitive touch screen to the liquid crystal display panel is divided into frame bonding and full bonding. Especially in large-size TVs, frame stickers are often used to avoid substantial cost increases. In the frame bonding process, the gap between the protective cover and the touch panel cannot be maintained at a fixed value, which makes the touch signal unstable and causes the touch function to be insensitive.

technical problem

The embodiments of the present application provide a touch display panel and a touch display device to solve the technical problem that the gap between the protective cover and the touch panel cannot be maintained at a fixed value during the frame bonding process of the existing touch panel.

Technical solutions

The embodiment of the application provides a touch display panel, which includes:

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

A support structure for supporting the cover plate, the support structure is formed on the side of the cover plate facing the display panel; the support structure is arranged corresponding to the black matrix;

The orthographic projection of the support structure on the plane where the black matrix is located is in the black matrix;

The touch display panel further includes a touch conductive layer disposed between the display panel and the support structure.

In the touch display panel of the present application, the cover plate includes a supporting area corresponding to the arrangement area of the black matrix, and the supporting structure is arranged on the supporting area at intervals.

In the touch display panel of the present application, the cover plate includes a support area corresponding to the arrangement area of the black matrix, and the support structure is continuously arranged on the support area.

In the touch display panel of the present application, the material of the support structure is selected from one of photoresist materials, glass materials, and silica materials, and combinations of groups thereof.

In the touch display panel of the present application, when the supporting structure is made of a photoresist material, a photolithography process is used to form the patterned supporting structure.

In the touch display panel of the present application, a first alignment mark is provided on the display panel, and a second alignment mark is provided on the cover; the first alignment mark and the second alignment mark The marks are correspondingly arranged to facilitate the attachment of the cover plate and the display panel.

In the touch display panel of the present application, the thickness of the support structure is between 5 μm and 10 μm.

The embodiment of the present application also provides a touch display panel, which includes:

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

The supporting structure is used to support the cover plate, and the supporting structure is formed on the side of the cover plate facing the display panel; the supporting structure is arranged corresponding to the black matrix.

In the touch display panel of the present application, the orthographic projection of the support structure on the plane where the black matrix is located is in the black matrix.

In the touch display panel of the present application, the touch display panel further includes a touch conductive layer, and the touch conductive layer is disposed between the display panel and the support structure.

The present application also relates to a touch display device, which includes a touch display panel, and the touch display panel includes:

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

In the touch display device of the present application, the orthographic projection of the support structure on the plane where the black matrix is located is located in the black matrix.

In the touch display device of the present application, the cover plate includes a support area corresponding to the arrangement area of the black matrix, and the support structure is arranged on the support area at intervals.

In the touch display device of the present application, the cover plate includes a supporting area corresponding to the setting area of the black matrix, and the supporting structure is continuously arranged on the supporting area.

In the touch display device of the present application, the material of the supporting structure is selected from one of photoresist materials, glass materials, and silica materials, and combinations of groups thereof.

In the touch display device of the present application, when the support structure is made of a photoresist material, a photolithography process is used to form the patterned support structure.

In the touch display device of the present application, a first alignment mark is provided on the display panel, and a second alignment mark is provided on the cover; the first alignment mark and the second alignment mark The marks are correspondingly arranged to facilitate the attachment of the cover plate and the display panel.

In the touch display device of the present application, the thickness of the support structure is between 5 μm and 10 μm.

In the touch display device of the present application, the touch display panel further includes a touch conductive layer, and the touch conductive layer is disposed between the display panel and the support structure.

Beneficial effect

Compared with the touch panel of the prior art, the touch display panel of the present application forms a support structure on the cover to ensure the minimum gap value between the glass cover and the display panel; in addition, the position of the support structure and the display panel Corresponding to the black matrix to avoid affecting the optical display effect of the touch display panel; it solves the technical problem that the gap between the protective cover and the touch panel cannot be maintained at a fixed value during the frame bonding process of the existing touch panel.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following briefly introduces the drawings that need to be used in the embodiments. The drawings in the following description are only part of the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the application;

2 is a schematic diagram of the structure of a display panel, a cover plate and a supporting structure of the touch display panel according to an embodiment of the application.

Embodiments of the invention

Please refer to the drawings in the drawings, where the same component symbols represent the same components. The following description is based on the exemplified specific embodiments of the present application, which should not be regarded as limiting other specific embodiments that are not described in detail herein.

Please refer to FIGS. 1 and 2. FIG. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the application; FIG. 2 is a structural schematic diagram of a display panel, a cover plate, and a supporting structure of the touch display panel according to an embodiment of the application. The touch display panel 100 of the embodiment of the present application includes a display panel 11, a cover plate 12 and a supporting structure 13.

Specifically, the display panel 11 includes pixels 111 and a black matrix 112 surrounding the pixels 111. The cover 12 is provided on the display panel 11. The cover plate 12 may be a glass cover plate 12, but is not limited thereto.

The supporting structure 13 is used to support the cover plate 12. The supporting structure 13 is formed on the side of the cover plate 12 facing the display panel 11. The supporting structure 13 is arranged corresponding to the black matrix 112.

In the touch display panel 100 of this embodiment, a support structure 13 is formed on the cover 12 to ensure the minimum gap value between the cover 12 and the display panel 11; in addition, the position of the support structure 13 is aligned with the black matrix 112 of the display panel 11. Correspondingly, it is avoided to affect the optical display effect of the touch display panel 100.

In this embodiment, the touch display panel 100 is subjected to a frame attaching process under vacuum conditions. The touch display panel 100 further includes a touch conductive layer 14 and a sealing frame 15. The touch conductive layer 14 is disposed between the display panel 11 and the supporting structure 13. The sealing frame 15 is arranged to seal the surrounding area between the touch conductive layer 14 and the cover plate 12 so that the cover plate 12, the sealing frame 15 and the touch conductive layer 14 define a sealed space 16. The supporting structure 13 is located in the sealed space 16.

Since the sealed space 16 is formed under vacuum conditions, the ambient pressure in the sealed space 16 is less than the atmospheric pressure of the external environment, so that the cover 12 will be slightly recessed into the sealed space 16, resulting in a gap between the cover 12 and the touch conductive layer 14. The gap value becomes lower. Therefore, the existence of the support structure 13 guarantees the minimum gap value between the two and avoids the problem of rainbow patterns caused by adsorption.

When the sealing frame 15 and the supporting structure 13 are made of the same material, the same process can be used for integral molding, which saves process steps and improves efficiency. Of course, the two can also be formed step by step. And the thickness of the sealing frame 15 is slightly greater than or equal to the thickness of the supporting structure 13. Optionally, the thickness of the support structure 13 is between 5 μm and 10 μm. The limitation of the range of the support structure 13 meets the impedance requirement of the touch display panel.

When the thickness of the sealing frame 15 is slightly larger than the thickness of the supporting structure 13, there is a slight gap between the supporting structure 13 and the touch conductive layer 14 under vacuum conditions. Once the frame-attached touch display panel 100 is out of the vacuum environment, under the action of the external atmospheric pressure, the supporting structure 13 will drop a certain height along with the cover 12 to fit the touch conductive layer 14 and support the cover 12.

In the touch display panel 100 of this embodiment, the orthographic projection of the support structure 13 on the plane where the black matrix 112 is located is located in the black matrix 112. Such an arrangement makes the supporting structure 13 face the black matrix 112 directly to avoid affecting the light-emitting effect of the display panel 11. Optionally, the width of the supporting structure 13 is smaller than the width of the corresponding black matrix 112. Such an arrangement facilitates fine adjustment when the cover plate 12 and the display panel 11 are aligned and attached to prevent the support structure 13 from exceeding the black matrix 112.

In the touch display panel 100 of this embodiment, the cover 12 includes a supporting area 121. The support area 121 corresponds to the setting area of the black matrix 112. The supporting structure 13 is arranged on the supporting area 121 at intervals. The spacing of the support structure 13 saves materials on the one hand and reduces the loss of brightness on the other hand. Optionally, the supporting structure 13 may be provided only in the middle area of the display panel 11, or may be provided in the middle area and the surrounding area respectively, and so on. As long as the supporting structure 13 has a supporting function.

In some embodiments, the cover plate includes a supporting area corresponding to the arrangement area of the black matrix, and the supporting structure is continuously arranged on the supporting area. Such an arrangement improves the stability of the supporting structure compared to this embodiment.

In the touch display panel 100 of this embodiment, the material of the support structure 13 is selected from one of photoresist materials, glass materials, and silica materials, and combinations of groups thereof. Optionally, the photoresist material may be plastic acrylic resin particles. The glass material may be a rod-shaped particle material. The silica material may be a spherical particle material. All three are transparent materials.

When the support structure 13 is made of a photoresist material, a photolithography process is used to form the patterned support structure 13. That is, CVD is used to coat a photoresist material on the cover plate 12 to form a film layer, and then a patterned support structure 13 is formed by processes such as exposure, development, and etching so that the support structure 13 corresponds to the black matrix 112.

In the touch display panel 100 of this embodiment, the display panel 100 is provided with a first alignment mark, and the cover plate 13 is provided with a second alignment mark. The first alignment mark and the second alignment mark are correspondingly arranged to facilitate the attachment of the cover plate 12 and the display panel 11.

The preparation process of this embodiment is:

A touch display module is provided, which includes a display panel 11 and a touch conductive layer 14 disposed on the display panel 11; the display panel 11 includes pixels 111 and a black matrix 112.

A supporting structure 13 is formed on the cover plate 12, and the supporting structure 13 corresponds to the setting area of the black matrix 112.

Place the touch display module and the cover plate 12 forming the support structure 13 under vacuum conditions, and perform the frame bonding process, so that a sealed space 16 is formed between the cover plate 12 and the touch conductive layer 14, and the sealed space 16 is filled with non- Oxidizing gases, such as nitrogen and inert gases.

In the process of frame sticking, the second alignment mark on the cover 12 and the first alignment mark on the filter substrate are aligned, that is, after the positions of the two are judged by CCD camera, automatic alignment is made. Together. The supporting structure 13 is supported between the black matrix 112 and the cover plate 12.

Subsequently, the bonded touch display panel 100 is released from the vacuum environment.

This completes the preparation process of this embodiment.

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

As mentioned above, for those of ordinary skill in the art, various other corresponding changes and modifications can be made according to the technical solutions and technical ideas of the present invention, and all these changes and modifications shall belong to the appended claims of the present invention. The scope of protection.

Claims

A touch display panel, which includes:

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

A support structure for supporting the cover plate, the support structure is formed on the side of the cover plate facing the display panel; the support structure is arranged corresponding to the black matrix;

The orthographic projection of the support structure on the plane where the black matrix is located is in the black matrix;

The touch display panel further includes a touch conductive layer disposed between the display panel and the support structure.
The touch display panel according to claim 1, wherein the cover plate comprises a supporting area, the supporting area corresponding to the arrangement area of the black matrix, and the supporting structure is arranged on the supporting area at intervals .
The touch display panel according to claim 1, wherein the cover plate comprises a support area, the support area corresponds to the arrangement area of the black matrix, and the support structure is continuously arranged on the support area .
The touch display panel of claim 1, wherein the material of the support structure is selected from one of photoresist materials, glass materials, and silica materials, and combinations of groups thereof.
4. The touch display panel of claim 4, wherein when the support structure is made of a photoresist material, a photolithography process is used to form the patterned support structure.
The touch display panel of claim 1, wherein a first alignment mark is provided on the display panel, and a second alignment mark is provided on the cover; the first alignment mark and the The second alignment marks are correspondingly arranged to facilitate the attachment of the cover plate and the display panel.
The touch display panel of claim 1, wherein the thickness of the support structure is between 5 microns and 10 microns.
A touch display panel, which includes:

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

The supporting structure is used to support the cover plate, and the supporting structure is formed on the side of the cover plate facing the display panel; the supporting structure is arranged corresponding to the black matrix.
8. The touch display panel according to claim 8, wherein the orthographic projection of the supporting structure on the plane where the black matrix is located is in the black matrix.
The touch display panel according to claim 9, wherein the cover plate comprises a supporting area, the supporting area corresponding to the arrangement area of the black matrix, and the supporting structure is arranged on the supporting area at intervals .
The touch display panel according to claim 9, wherein the cover plate comprises a support area, the support area corresponds to a setting area of the black matrix, and the support structure is continuously arranged on the support area .
8. The touch display panel of claim 8, wherein the material of the support structure is selected from one of photoresist materials, glass materials, and silica materials, and combinations of groups thereof.
The touch display panel of claim 12, wherein when the supporting structure is made of a photoresist material, a photolithography process is used to form the patterned supporting structure.
The touch display panel of claim 8, wherein a first alignment mark is provided on the display panel, and a second alignment mark is provided on the cover; the first alignment mark and the The second alignment marks are correspondingly arranged to facilitate the attachment of the cover plate and the display panel.
The touch display panel of claim 8, wherein the thickness of the support structure is between 5 microns and 10 microns.
8. The touch display panel of claim 8, wherein the touch display panel further comprises a touch conductive layer, and the touch conductive layer is disposed between the display panel and the support structure.
A touch display device includes a touch display panel, and the touch display panel includes:

A display panel, including pixels and a black matrix surrounding the pixels;

The cover plate is arranged on the display panel; and

The supporting structure is used to support the cover plate, and the supporting structure is formed on the side of the cover plate facing the display panel; the supporting structure is arranged corresponding to the black matrix.
18. The touch display device of claim 17, wherein the orthographic projection of the support structure on the plane where the black matrix is located is located in the black matrix.
18. The touch display device according to claim 18, wherein the cover plate comprises a supporting area, the supporting area corresponding to a setting area of the black matrix, and the supporting structure is arranged on the supporting area at intervals .
18. The touch display device according to claim 18, wherein the cover plate comprises a support area, the support area corresponding to the arrangement area of the black matrix, and the support structure is continuously arranged on the support area .