CN219066122U

CN219066122U - Copper foil-clad touch screen with shielding film attached to back surface

Info

Publication number: CN219066122U
Application number: CN202223473250.6U
Authority: CN
Inventors: 李衡均
Original assignee: Dongguan Youlian Hengda Optoelectronics Co ltd
Current assignee: Dongguan Youlian Hengda Optoelectronics Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-23
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a copper foil-clad touch screen with a shielding film attached to the back, which comprises touch screen glass and a shielding part, wherein the shielding part comprises a base layer, a first copper foil layer and a second copper foil layer, the first copper foil layer and the second copper foil layer are fixedly connected to two sides of the base layer, the base layer is one of a PET film, a PMMA film, a PC film, a TAC film, a solid optical cement film or a liquid optical cement film, the first copper foil layer and the second copper foil layer are fixedly bonded with the base layer through oca optical cement, one side of the shielding part is fixedly connected with a lower buffer layer, and one side of the lower buffer layer far away from the shielding part is fixedly connected with back explosion-proof glass. The shielding part is additionally arranged, the first copper foil layer and the second copper foil layer in the shielding part have better shielding effect on high-frequency electromagnetic signals, the problem that the traditional shielding glass or the shielding film has poor shielding effect on the high-frequency electromagnetic signals is solved, and the shielding part and the shielding film are matched to provide a more comprehensive shielding effect for the touch screen.

Description

Copper foil-clad touch screen with shielding film attached to back surface

Technical Field

The utility model relates to the technical field of touch screens, in particular to a copper foil-clad touch screen with a shielding film attached to the back.

Background

Touch panels (Touch panels) are also called as "Touch screens" and "Touch panels", and are induction type liquid crystal display devices capable of receiving input signals such as contacts, and Touch devices are popular in the electronic communication industry due to the advantages of convenient operation, good imaging effect, multiple functions and the like, and are widely applied to products such as information system devices, household electrical appliances, communication devices, personal portable devices and the like.

However, the shielding film or the shielding glass has poor shielding effect at present, and has good shielding effect on low-frequency signals when shielding electromagnetic signals, but has poor shielding effect on high-frequency electromagnetic signals, and the shielding performance is not comprehensive enough.

Therefore, we propose a back-surface-mounted shielding film copper foil-clad touch screen for solving the above problems.

Disclosure of Invention

The utility model aims to provide a copper foil-clad touch screen with a shielding film attached to the back surface, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the back surface-attached shielding film copper foil-clad touch screen comprises touch screen glass and a shielding part, wherein the shielding part comprises a base layer, a first copper foil layer and a second copper foil layer, the first copper foil layer and the second copper foil layer are fixedly connected to two sides of the base layer, the base layer is one of a PET film, a PMMA film, a PC film, a TAC film, a solid optical cement film or a liquid optical cement film, and the first copper foil layer and the second copper foil layer are fixedly bonded with the base layer through oca optical cement;

the shielding part is fixedly connected with the lower buffer layer, the back explosion-proof glass is fixedly connected with one side of the lower buffer layer, which is far away from the shielding part, the shielding film is fixedly connected with one side of the back explosion-proof glass, which is far away from the lower buffer layer, and the lower buffer layer is fixedly connected on the first copper foil layer.

Preferably, an upper buffer layer is fixedly connected to one side of the touch screen glass, the upper buffer layer is far away from the second copper foil layer on the shielding part of the touch screen glass, and the upper buffer layer and the lower buffer layer are both made of polyester materials.

Preferably, an embedding opening is formed in one side, close to the touch screen glass, of the upper buffer layer, and a flexible circuit board is fixedly connected in the embedding opening.

Preferably, one side of the touch screen glass, which is far away from the upper buffer layer, is fixedly connected with a transparent metal circuit board, and one side of the transparent metal circuit board, which is far away from the touch screen glass, is fixedly connected with a transparent touch sensing layer.

Preferably, the transparent touch sensing layer is far away from transparent metal circuit board one side rigid coupling surface layer explosion-proof glass, surface layer explosion-proof glass is far away from transparent touch sensing layer one side rigid coupling antifriction membrane, antifriction membrane is wear-resisting polyurethane material, back explosion-proof glass is far away from lower buffer layer one side rigid coupling shielding film.

Compared with the prior art, the utility model has the beneficial effects that:

the shielding part is additionally arranged, the first copper foil layer and the second copper foil layer in the shielding part have better shielding effect on high-frequency electromagnetic signals, the problem that the traditional shielding glass or the shielding film has poor shielding effect on the high-frequency electromagnetic signals is solved, and the shielding part and the shielding film are matched to provide a more comprehensive shielding effect for the touch screen.

Drawings

FIG. 1 is a schematic diagram of a main structure of a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of the explosive structure of the main body in the first and second embodiments of the present utility model;

fig. 3 is a schematic view showing a cross-sectional structure of a shielding portion in the first embodiment of the present utility model.

In the figure: 1. a touch screen glass; 2. an upper buffer layer; 3. a shielding part; 4. a lower buffer layer; 5. back explosion-proof glass; 6. a transparent metal circuit board; 7. a transparent touch sensing layer; 8. surface explosion-proof glass; 21. a notch is formed; 22. a flexible circuit board; 31. a base layer; 32. a first copper foil layer; 33. a second copper foil layer; 51. a shielding film; 81 antiwear film.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a back pastes shielding film copper foil-clad touch screen, includes touch screen glass 1 and shielding part 3, shielding part 3 includes basic unit 31, first copper foil layer 32 and second copper foil layer 33 rigid coupling are in basic unit 31 both sides, basic unit 31 is one of PET film, PMMA film, PC film, TAC film, solid optical cement film or liquid optical cement film, first copper foil layer 32 and second copper foil layer 33 are all through oca optical cement and basic unit 31 fixed bonding;

the shielding part 3 is fixedly connected with the lower buffer layer 4, the lower buffer layer 4 is fixedly connected with the back explosion-proof glass 5 at the side far away from the shielding part 3, the back explosion-proof glass 5 is fixedly connected with the shielding film 51 at the side far away from the lower buffer layer 4, and the lower buffer layer 4 is fixedly connected on the first copper foil layer 32.

Example 2:

referring to fig. 2, in a second embodiment of the present utility model, based on the previous embodiment, one side of the touch screen glass 1 is fixedly connected with an upper buffer layer 2, one side of the upper buffer layer 2, which is far away from the touch screen glass 1, is fixedly connected with a second copper foil layer 33 on the shielding portion 3, and both the upper buffer layer 2 and the lower buffer layer 4 are made of polyester.

The embedding opening 21 is formed in one side, close to the touch screen glass 1, of the upper buffer layer 2, the flexible circuit board 22 is fixedly connected in the embedding opening 21, and the upper buffer layer 2 can protect the flexible circuit board 22, so that the protection effect is improved.

The transparent metal circuit board 6 is fixedly connected to one side, away from the upper buffer layer 2, of the touch screen glass 1, and the transparent touch sensing layer 7 is fixedly connected to one side, away from the touch screen glass 1, of the transparent metal circuit board 6.

The transparent touch sensing layer 7 is far away from the transparent metal circuit board 6 side fixedly connected with the surface layer explosion-proof glass 8, the surface layer explosion-proof glass 8 is far away from the transparent touch sensing layer 7 side fixedly connected with the wear-resistant film 81, the wear-resistant film 81 is made of wear-resistant polyurethane, and the back explosion-proof glass 5 is far away from the lower buffer layer 4 side fixedly connected with the shielding film 51.

Example 3:

referring to fig. 1-3, in a third embodiment of the present utility model, based on the two embodiments, a shielding portion 3 is added, the first copper foil layer 32 and the second copper foil layer 33 in the shielding portion 3 have better shielding effect on high-frequency electromagnetic signals, the problem of poor shielding effect on high-frequency electromagnetic signals caused by conventional shielding glass or a shielding film 51 is solved, and a more comprehensive shielding effect is provided for a touch screen together with the shielding film 51.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a back pastes shielding film copper foil-clad touch-sensitive screen, includes touch-sensitive screen glass (1) and shielding part (3), its characterized in that:

the shielding part (3) comprises a base layer (31), a first copper foil layer (32) and a second copper foil layer (33), wherein the first copper foil layer (32) and the second copper foil layer (33) are fixedly connected to two sides of the base layer (31), the base layer (31) is one of a PET film, a PMMA film, a PC film, a TAC film, a solid optical cement film or a liquid optical cement film, and the first copper foil layer (32) and the second copper foil layer (33) are fixedly bonded with the base layer (31) through oca optical cement;

the shielding part is characterized in that one side of the shielding part (3) is fixedly connected with the lower buffer layer (4), one side of the lower buffer layer (4) away from the shielding part (3) is fixedly connected with the back explosion-proof glass (5), one side of the back explosion-proof glass (5) away from the lower buffer layer (4) is fixedly connected with the shielding film (51), and the lower buffer layer (4) is fixedly connected on the first copper foil layer (32).

2. The back side shielding film copper foil-clad touch screen according to claim 1, wherein: the upper buffer layer (2) is fixedly connected to one side of the touch screen glass (1), the upper buffer layer (2) is far away from a second copper foil layer (33) on the shielding part (3) on one side of the touch screen glass (1), and the upper buffer layer (2) and the lower buffer layer (4) are made of polyester materials.

3. The back side shielding film copper foil-clad touch screen according to claim 2, wherein: an embedding opening (21) is formed in one side, close to the touch screen glass (1), of the upper buffer layer (2), and a flexible circuit board (22) is fixedly connected in the embedding opening (21).

4. A back side shielding film copper foil-clad touch screen according to claim 3, wherein: transparent metal circuit board (6) is fixedly connected to one side, away from upper buffer layer (2), of touch screen glass (1), and transparent touch sensing layer (7) is fixedly connected to one side, away from touch screen glass (1), of transparent metal circuit board (6).

5. The back side shielding film copper foil-clad touch screen as claimed in claim 4, wherein: transparent touch-sensitive layer (7) keep away from transparent metal circuit board (6) one side rigid coupling top layer explosion-proof glass (8), top layer explosion-proof glass (8) keep away from transparent touch-sensitive layer (7) one side rigid coupling antifriction membrane (81), antifriction membrane (81) are wear-resisting polyurethane material, back explosion-proof glass (5) keep away from lower buffer layer (4) one side rigid coupling shielding membrane (51).