CN214474939U

CN214474939U - Anti-interference capacitive touch screen functional sheet

Info

Publication number: CN214474939U
Application number: CN202120632981.7U
Authority: CN
Inventors: 孙大鹏; 高丽雯; 窦胜国
Original assignee: NANJING WALLY ELECTRONICS TECHNOLOGY CO LTD
Current assignee: NANJING WALLY ELECTRONICS TECHNOLOGY CO LTD
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-10-22
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses an anti-interference capacitive touch screen functional sheet, which comprises an upper transparent conductive layer and a lower transparent conductive layer, wherein the conductive surfaces of the two conductive layers are laminated and bonded relatively through a layer of transparent optical cement; the upper transparent conducting layer and the lower transparent conducting layer respectively comprise a function area and a wiring area, the wiring area is located around the function area, the wiring area is covered with an insulating layer, metal wiring is printed on the insulating layer, the metal wiring is conducted with a transparent electrode in the function area, and a ground wire in the metal wiring is conducted with an original electrode layer on the lower layer of the insulating layer through at least two via holes formed in the insulating layer. The utility model discloses a positive, the anti-two sides of all circuits of capacitive touch screen function piece inside all have conductor shield, make the inner line of touch-sensitive screen have had the interference killing feature.

Description

Anti-interference capacitive touch screen functional sheet

Technical Field

The utility model relates to a touch-sensitive screen technical field, concretely relates to anti-interference capacitive touch screen function piece.

Background

Because the electromagnetic environment that the capacitive screen customer used is more complicated, capacitive touch screen receives the space radiation interference of self or other equipment easily, seriously influences user experience, if can not be fine solution electromagnetic interference problem, will bring following drawback:

(1) the operation experience is influenced, phenomena such as touch drift and the like are easy to occur, and false touch is generated;

(2) the individual difference is large, and the popularization consistency is poor;

(3) affecting the normal use of the whole machine product.

Therefore, the development of an anti-interference capacitive touch screen functional sheet and a capacitive touch screen is of great significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti-interference capacitive touch screen function piece.

The utility model adopts the technical proposal that:

an anti-interference capacitive touch screen functional sheet comprises an upper transparent conductive layer and a lower transparent conductive layer, wherein the upper transparent conductive layer is composed of a first substrate and a first transparent electrode layer arranged on the first substrate, the lower transparent conductive layer is composed of a second substrate and a second transparent electrode layer arranged on the second substrate, and the conductive surfaces of the first substrate and the second substrate are laminated and bonded through a layer of transparent optical cement;

go up transparent conducting layer and lower transparent conducting layer and all include functional area and wiring district, and the wiring district is located the function area around, and the functional area etching has the electrode pattern, and the wiring district remains former electrode layer, and the wiring district coats and is stamped the one deck insulating layer, and the printing has the metal to walk the line on the insulating layer, and the metal is walked the line and is switched on with the transparent electrode in the functional area, and wherein the metal is walked the ground wire in the line and is switched on with the former electrode layer of insulating layer lower floor through setting up two at least via holes on the insulating layer.

Furthermore, the thickness of the transparent optical adhesive layer is 50 um-100 um.

Further, the first substrate and the second substrate are both made of a transparent organic polymer material.

Further, the transparent organic polymer material is PET, PC or PMMAPET.

Further, the first transparent electrode layer and the second transparent conductive layer are made of ITO, IZO, nano-silver or nano-carbon tube materials.

Further, the first transparent electrode layer and the second transparent conductive layer are both made of an ITO material.

The utility model has the advantages that: compared with the prior art, the utility model discloses it has the insulating layer to cover all around at the functional area, walks the line with the metal simultaneously and prints on the insulating layer, and ITO under the insulating layer is whole to be kept, and walks the ground wire in the line through via hole and metal and be connected. And the two-layer electrode combination mode is adjusted for face-to-face by original face-to-back, thereby makes the utility model discloses an inside all metals of capacitive touch screen function piece are walked the line and are all had the ITO conductor to shield on the positive, reverse two sides to make the inner line of touch-sensitive screen have the interference killing feature.

Drawings

Fig. 1 is a schematic structural view showing a capacitive touch screen functional sheet according to a first embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Detailed Description

For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.

Example 1

Referring to fig. 1 and fig. 2, the present embodiment provides an anti-interference capacitive touch screen functional sheet, which includes an upper transparent conductive layer and a lower transparent conductive layer, where the upper transparent conductive layer is composed of a first substrate 8 and a first transparent electrode layer 7 disposed on the first substrate, the lower transparent conductive layer is composed of a second substrate 1 and a second transparent electrode layer 2 disposed on the second substrate, and conductive surfaces of the first substrate 8 and the second substrate 1 are laminated and bonded through a layer of transparent optical adhesive 5;

go up transparent conducting layer and include function area and last wiring district 32, go up wiring district 32 and be located the periphery of last function area, go up the function area and etch and have the electrode pattern, go up wiring district 32 and remain the former electrode layer, it has one deck upper insulation layer 42 to cover on the wiring district 32, the printing has last metal to walk line 62 on the upper insulation layer 42, go up metal and walk line 62 and switch on with the transparent electrode in the function area, wherein go up the ground wire in the metal and walk line 62 and switch on with the former electrode layer of upper insulation layer lower floor through setting up two via holes on upper insulation layer 42.

The lower transparent conductive layer comprises a lower functional area and a lower wiring area 31, the lower wiring area 31 is located around the lower functional area, an electrode pattern is etched on the lower functional area, an original electrode layer is reserved in the lower wiring area 31, a lower insulating layer 41 covers the lower wiring area 31, a lower metal wiring 61 is printed on the lower insulating layer 41, the lower metal wiring 61 is conducted with a transparent electrode in the upper functional area, and a ground wire in the lower metal wiring 61 is conducted with the original electrode layer on the lower insulating layer through two through holes 91 formed in the lower insulating layer 41.

In the present embodiment, the thickness of the transparent optical adhesive is 50 um; the first substrate and the second substrate are both made of PET organic polymer materials; the first transparent electrode layer and the second transparent conductive layer are both made of an ITO material.

In the manufacturing process of the functional sheet of the capacitive touch screen in embodiment 1, the upper transparent conductive layer and the lower transparent conductive layer are etched to form electrode patterns required by the visible area, and the ITO on the periphery of the functional area needs to be completely stored on the whole surface, unlike the ordinary touch screen which is completely etched. After etching, printing an insulating layer around the functional region to make the insulating layer cover the ITO layer around the functional region. And then, printing metal wiring of the touch screen on the insulating layer, and arranging two through holes on the insulating layer to connect and conduct the metal wiring and the ITO in the wiring area. Through structural adjustment, the front and back sides of all circuits in the touch screen are shielded by conductors, so that the internal circuits of the touch screen have anti-interference capability.

Example 2

The structure of the embodiment 2 is basically the same as that of the embodiment except that the thickness of the transparent optical adhesive is 100 um; the first substrate and the second substrate are both made of PC organic polymer materials; the first transparent electrode layer and the second transparent conductive layer are both made of nano-silver materials.

Example 3

The structure of the embodiment 3 is basically the same as that of the embodiment except that the thickness of the transparent optical adhesive is 50 um; the first substrate and the second substrate are both made of PMMAPET organic polymer materials; the first transparent electrode layer and the second transparent conductive layer are both made of carbon nanotube material.

The manufacturing methods of example 2 and example 3 are the same as example 1.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an anti-interference capacitive touch screen function piece, includes transparent conducting layer and lower transparent conducting layer, goes up transparent conducting layer and comprises first base plate and the first transparent electrode layer that sets up on first base plate, and lower transparent conducting layer comprises second base plate and the second transparent electrode layer of setting on the second base plate, and first base plate and second base plate conducting surface are relative through the range upon range of bonding of one deck transparent optical cement, its characterized in that:

2. The anti-interference capacitive touch screen functional sheet according to claim 1, wherein the thickness of the transparent optical adhesive is 50um to 100 um.

3. The functional sheet for the anti-interference capacitive touch screen according to claim 1 or 2, wherein the first substrate and the second substrate are both made of transparent organic polymer materials.

4. The functional sheet for an anti-interference capacitive touch screen according to claim 3, wherein the transparent organic polymer material is PET, PC or PMMAPET.

5. The anti-interference capacitive touch screen functional sheet according to claim 1 or 2, wherein the first transparent electrode layer and the second transparent conductive layer are made of ITO, IZO, nano silver or nano carbon tube material.

6. The anti-interference capacitive touch screen functional sheet according to claim 5, wherein the first transparent electrode layer and the second transparent conductive layer are made of ITO material.