CN216531279U

CN216531279U - Touch key structure

Info

Publication number: CN216531279U
Application number: CN202122853681.4U
Authority: CN
Inventors: 蒋忠春; 卢剑辉
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-13
Anticipated expiration: 2031-11-22

Abstract

The utility model relates to a touch key structure which comprises a GLASS layer and an FPC layer, wherein an ITO layer covers one side surface of the FPC layer, the FPC layer of the side surface is attached to one side surface of the GLASS layer through a double faced adhesive tape, the ITO layer is positioned between the GLASS layer and the FPC layer, and the double faced adhesive tape is positioned on the outer side of the ITO layer; the other side surface of the FPC layer is positioned on one side of the outer edge of the GLASS layer, an IC chip is arranged in the FPC layer on the other side surface, and a signal connection port is arranged at the end part of the FPC layer; the utility model has the beneficial effects that: 1. by adopting the GLASS layer and the double-sided adhesive tape, a layer of FILM and a manufacturing process are reduced, and the cost is greatly reduced; 2. the double-sided adhesive tape is adopted to be attached to the FPC layer and the GLASS layer, so that the cost of the double-sided adhesive tape is lower than that of OCA, and the attaching process is simpler and more convenient; 3. the ITO layer is directly manufactured on the FPC layer, the process is simpler, one FPC binding procedure is reduced, the structure is simpler, the cost is lower, and the competitiveness of the product in the market is greatly improved.

Description

Touch key structure

Technical Field

The utility model belongs to the technical field of keys, and particularly relates to a touch key structure.

Background

Most of existing touch display small products with keys, such as industrial control, household appliances, medical equipment and the like, are manufactured with ITO patterns for realizing the induction and driving of key functions on a FILM (namely the product type of GLASS + OCA + FILM structure, GF structure for short), then FPC is bound, and then background calculation processing is carried out by reporting coordinate data to realize the point touch function; the manufacturing process comprises the following steps: firstly, silk-screen printing ITO on a FILM, then adhering the FILM to the back of the OCA, then binding the FPC with a product of the OCA adhered with the FILM, and finally adhering the FILM bound with the FPC with GLASS through the OCA; for many industrial control products, household appliances and medical equipment, only a few simple key touch or sliding functions are needed, and if the GF structure is adopted to realize the few simple touch and sliding functions, the problems of waste, more manufacturing processes and high cost are solved, so that the competitiveness of the product is reduced invisibly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a touch key structure which is simple in structure, low in cost and short in manufacturing process, and can solve the most common point touch and sliding functions of small touch products with keys for industrial control and household appliances and medical equipment.

The touch key structure comprises a GLASS layer and an FPC layer, wherein an ITO layer covers one side of the FPC layer, the FPC layer on the side is attached to one side of the GLASS layer through a double-sided adhesive tape, the ITO layer is located between the GLASS layer and the FPC layer, and the double-sided adhesive tape is located on the outer side of the ITO layer; the other side surface of the FPC layer is positioned on one side of the outer side of the GLASS layer, an IC chip is arranged in the FPC layer on the other side surface, and a signal connection port is arranged at the end part of the FPC layer.

The utility model has the beneficial effects that: by adopting the technical scheme, compared with the prior art, 1, because the GLASS layer and the double-sided adhesive tape are adopted, a layer of FILM and a manufacturing process are reduced, the structure is simple, and the cost is greatly reduced; 2. because the double-sided adhesive tape is adopted to be adhered with the FPC layer and the GLASS layer, the double-sided adhesive tape has lower cost compared with OCA, simpler and more convenient adhering process and higher efficiency; 3. because the ITO layer is directly manufactured on the FPC layer, the process is simpler, one FPC binding procedure is reduced, the structural change is simpler, the cost is lower, and the competitiveness of the product in the market is greatly improved.

Preferably, the ITO layer comprises point touch indicating marks and sliding direction marks, and the point touch indicating marks are positioned on two sides of the sliding direction marks; therefore, the operation of a user can be facilitated, and the operation efficiency is higher.

Preferably, the point touch indication mark and the sliding direction mark are printed on the ITO layer in a copper spreading mode; therefore, the processing and forming are convenient, the indication is clear, and the operation of a user is convenient.

Preferably, the double-sided adhesive tape is annular double-sided adhesive tape, and the outline of the double-sided adhesive tape is consistent with the outline of the FPC layer covered with the ITO layer; the double-sided adhesive tape with the structure can ensure the effective operation of the ITO layer, and is more conformable after being attached to the FPC layer.

Preferably, the outer end face of the double-sided adhesive tape is flush with the outer end face of the FPC layer, and a clearance groove is formed in the inner side of the double-sided adhesive tape; the double-sided adhesive tape with the structure can ensure the effective operation of the ITO layer, is more conformable after being attached to the FPC layer, and has more attractive overall appearance.

Preferably, the area of the groove plane of the clearance groove is larger than or equal to the area of the plane of the ITO layer; therefore, the ITO layer can be completely positioned in the clearance groove, and an operator can directly operate according to the indication of the ITO layer through the GLASS layer.

Preferably, the glue wall width W of the double-sided adhesive tape is 2-4 mm; the strength of the double-sided adhesive tape is further ensured while the requirement for setting the double-sided adhesive tape is met.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

FIG. 3 is a schematic view of a duplex gel structure of the present invention.

The reference numbers in the drawings are respectively: 1. a GLASS layer; 2. an FPC layer; 3. an ITO layer; 4. double-sided adhesive tape; 5. a guide block; 21. an IC chip; 22. a signal connection port; 31. point touch indication marks; 32. a sliding direction mark; 41. and (5) avoiding a clearance groove.

Detailed Description

The utility model will be described in detail below with reference to the following drawings: as shown in the attached drawings 1 and 2, the utility model comprises a GLASS layer 1 and an FPC layer 2, wherein an ITO layer 3 is covered on one side surface of the FPC layer 2, the FPC layer 2 on the side surface is attached to one side surface of the GLASS layer 1 through a double-sided adhesive tape 4, the ITO layer 3 is positioned between the GLASS layer 1 and the FPC layer 2, and the double-sided adhesive tape 4 is positioned on the outer side of the ITO layer 3; the other side surface of the FPC layer 2 is positioned at one side of the outer edge of the GLASS layer 1, an IC chip 21 is arranged in the FPC layer 2 at the side surface, a signal connection port 22 is arranged at the end part of the FPC layer 2, information is transmitted with external signals through the signal connection port 22, and signal transmission is carried out through the built-in IC chip 21 and the ITO layer 3; the ITO layer 3 comprises a point touch indicating mark 31 and a sliding direction mark 32, and the point touch indicating mark 31 is positioned on two sides of the sliding direction mark 32; the point contact indication mark 31 and the sliding direction mark 32 are printed on the ITO layer 3 in a copper laying mode; the ITO layer 3 is an ITO pattern for realizing induction and driving of key functions, the ITO pattern is a point contact indicating mark 31 and a sliding direction mark 32, and the ITO layer 3 is directly printed on one side surface of the FPC layer 2; one layer of FILM is reduced, the process of binding the FPC layer 2 is reduced, the FPC and the GLASS are directly attached together by using the double faced adhesive tape 4, the cost is greatly reduced, the structure is more compact, and the competitiveness of the product in the market is greatly improved.

The double-sided adhesive tape 4 is annular double-sided adhesive tape, and the outline of the double-sided adhesive tape 4 is consistent with the outline of the FPC layer 2 covered with the ITO layer 3; the more preferable scheme is as follows: as shown in fig. 3, the outer end face of the double-sided adhesive tape 4 is flush with the outer end face of the FPC layer 2, and a clearance groove 41 is formed in the inner side of the double-sided adhesive tape 4; the area of the groove plane of the clearance groove 41 is larger than or equal to the area of the plane of the ITO layer 3; the glue wall width W of the double-sided glue 4 is 2-4 mm, and is generally 3 mm; therefore, the ITO patterns in the ITO layer can be completely positioned in the clearance groove 41, and an operator can directly operate according to the indication of the ITO layer through the GLASS layer; not only can ensure the effective operation of the ITO layer, but also the double faced adhesive tape is more conformable after being attached with the FPC layer, and the overall appearance is more attractive.

The GLASS layer 1 is a touch panel layer, the FPC layer 2 is a flexible circuit board layer, and the ITO layer 3 is an indium tin oxide semiconductor transparent conductive film.

The manufacturing process of the touch key structure comprises the following steps: directly print ITO layer 3 on FPC layer 2, then with this face bonding of double faced adhesive tape 4 and FPC layer 2 that the printing has ITO layer 3 together, the FPC layer 2 that will bond double faced adhesive tape 4 at last is directly in the same place with GLASS layer 1 laminating, compares with prior art: 1. because the GLASS layer and the double-sided adhesive tape are adopted, a layer of FILM and a manufacturing process are reduced, the structure is simple, and the cost is greatly reduced; 2. because the double-sided adhesive tape is adopted to be adhered with the FPC layer and the GLASS layer, the double-sided adhesive tape has lower cost compared with OCA, simpler and more convenient adhering process and higher efficiency; 3. because the ITO layer is directly manufactured on the FPC layer, the process is simpler, one FPC binding procedure is reduced, the structural change is simpler, the cost is lower, and the competitiveness of the product in the market is greatly improved.

The present invention is not limited to the above embodiments, and any changes in the shape or material composition, or any changes in the structural design provided by the present invention, are all modifications of the present invention, and should be considered to be within the scope of the present invention.

Claims

1. A touch key structure comprises a GLASS layer (1) and an FPC layer (2), and is characterized in that: one side face of the FPC layer (2) is covered with an ITO layer (3), the FPC layer (2) on the side face is attached to one face of the GLASS layer (1) through a double-sided adhesive tape (4), the ITO layer (3) is located between the GLASS layer (1) and the FPC layer (2), and the double-sided adhesive tape (4) is located on the outer side of the ITO layer (3); the other side surface of the FPC layer (2) is located on one side of the outer edge of the GLASS layer (1), an IC chip (21) is arranged in the FPC layer (2) on the other side surface, and a signal connection port (22) is arranged at the end portion of the FPC layer (2).

2. The touch key structure of claim 1, wherein: including point touch indicator (31) and slip direction sign (32) on ITO layer (3), point touch indicator (31) are located the both sides of slip direction sign (32).

3. The touch key structure of claim 2, wherein: the point contact indication mark (31) and the sliding direction mark (32) are printed on the ITO layer (3) in a copper spreading mode.

4. The touch key structure of claim 1, wherein: the double-sided adhesive tape (4) is annular, and the outline of the double-sided adhesive tape (4) is consistent with the outline of the FPC layer (2) covered with the ITO layer (3).

5. The touch key structure of claim 1, wherein: the outer side end face of the double faced adhesive tape (4) is flush with the outer side end face of the FPC layer (2), and a clearance groove (41) is formed in the inner side of the double faced adhesive tape (4).

6. The touch key structure of claim 5, wherein: the area of the groove plane of the clearance groove (41) is larger than or equal to the area of the plane of the ITO layer (3).

7. The touch key structure of claim 1, wherein: the glue wall width W of the double-sided glue (4) is 2-4 mm.