CN108459767B

CN108459767B - Touch control induction film with easy-to-fold structure

Info

Publication number: CN108459767B
Application number: CN201810186127.5A
Authority: CN
Inventors: 任陈铭; 林仲宏; 姚彦章; 陈柏林; 陈益莹; 黄彦衡
Original assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Current assignee: Interface Optoelectronics Shenzhen Co Ltd; Interface Technology Chengdu Co Ltd; General Interface Solution Ltd
Priority date: 2018-03-07
Filing date: 2018-03-07
Publication date: 2021-04-13
Anticipated expiration: 2038-03-07
Also published as: TW201939231A; TWI664561B; CN108459767A

Abstract

The invention provides a touch sensing film with an easy-reverse-folding structure, which is applied to a touch panel, the touch sensing film is adhered to the upper surface of a display module of the touch panel and is partially reversely folded to one side surface of the display module through a reverse folding angle, and the touch sensing film comprises a positioning groove which is arranged at the reverse folding angle and used for accurately controlling the reverse folding position and reducing the stress when the touch sensing film is reversely folded.

Description

Touch control induction film with easy-to-fold structure

Technical Field

The present invention relates to the field of touch display devices, and more particularly, to a touch sensing film having an easy-to-fold structure at a fold-back corner.

Background

The touch panel is widely applied to the external input interface of the instrument due to the characteristics of man-machine interaction and design diversification. With the development of technology, people have higher and higher quality requirements for electronic products, and under strong competition, electronic manufacturers have increasingly aimed at making electronic products beautiful, light, thin and narrow, and hope that the larger the liquid crystal screen is, the better the screen is.

Generally, the frame area around the lcd does not have a display effect, and the appearance of the frame area also affects the visual aesthetic effect, so electronic manufacturers are dedicated to developing frame shrinking technology.

In order to achieve the effect of narrow frame, most touch modules adopt circuit trace miniaturization technology, however, the minimization of the frame area has practical limitations, the circuit trace miniaturization has reached 10/10 level, and if circuit miniaturization is pursued, high manufacturing cost is required, which is not in accordance with economic benefit. In addition, manufacturers have developed a technique for bending the edge of the sensing electrode, however, the bending region of the touch sensing film is still affected by the stress of the touch sensing film, which is likely to cause poor bonding.

Disclosure of Invention

The main purpose of the present invention is to improve the problems encountered in the current touch module frame shrinking technology. The present invention provides a touch sensing film with an easily foldable structure, which is applied to a touch panel, wherein the touch sensing film is adhered to an upper surface of a display module of the touch panel and is folded back to a side surface of the display module through a foldable corner, and the touch sensing film includes a positioning groove disposed at the foldable corner for accurately controlling a foldable position and reducing stress when the touch sensing film is folded back.

In a preferred embodiment of the present invention, the touch sensing film is an Indium Tin Oxide (ITO) film.

In the preferred embodiment of the present invention, the positioning groove is U-shaped or V-shaped.

In a preferred embodiment of the present invention, the positioning groove further includes a reinforcing structure filled in the positioning groove.

In a preferred embodiment of the present invention, the positioning groove is a U-shaped groove, and the diameter of the U-shaped groove is greater than 0.6 mm.

In a preferred embodiment of the present invention, the positioning groove is a V-shaped groove, and the width of the V-shaped groove is greater than 0.6 mm.

In the preferred embodiment of the present invention, the display module is a liquid crystal screen or an organic light emitting diode.

In a preferred embodiment of the present invention, the touch sensing film has a sensing electrode, and a horizontal distance between the sensing electrode and the positioning groove is greater than 1 mm.

In a preferred embodiment of the present invention, the touch sensing film further has a frame circuit trace, and the frame circuit trace is used for transmitting the touch signal of the sensing electrode.

In a preferred embodiment of the present invention, the positioning groove and the sensing electrode are respectively disposed on different sides of the touch sensing film.

Drawings

FIG. 1 is a schematic diagram of a touch panel of a preferred embodiment of a touch sensing film with an easy-to-reverse structure according to the present invention.

Fig. 2 is a partial schematic view of a touch sensing film having an easy-to-reverse structure according to a preferred embodiment of the touch sensing film of the invention.

Fig. 3 is a first schematic view of easy folding of the touch sensing film with the easy folding structure according to the preferred embodiment of the invention.

Fig. 4 is a schematic diagram illustrating a second easy-to-fold structure of a touch sensing film according to a preferred embodiment of the invention.

FIG. 5 is a schematic diagram of a sensing electrode of a touch sensing film with an easy-to-reverse structure according to a second embodiment of the present invention.

Reference numerals:

touch panel 1

Touch sensing film

2,2a

Reverse angle 20

Surfaces

21,22

Display module 3

Upper surface 31

Side 32

Optical cement 4

Inductive electrode 51

Sensing line 511

Insulating layer 512

Drive line 513

Bezel circuit trace 52

Positioning groove

6,6a

Reinforcement structure 61

Cover plate 7

Width V, W

Horizontal distance A

Detailed Description

To achieve the above objects and advantages, the technical means and structure adopted by the present invention are described in detail with reference to the following drawings for fully understanding the preferred embodiments of the present invention, but it should be noted that the contents do not limit the present invention.

Fig. 1, fig. 2, fig. 3 and fig. 4 are a schematic view of a touch panel, a partial schematic view of a touch sensing film, a first schematic view of easy folding, and a second schematic view of easy folding of a preferred embodiment of a touch sensing film with an easy folding structure according to the present invention. The touch sensing film 2 with the easy reverse folding structure of the present invention is applied to a touch panel 1 with a narrow frame requirement, and the touch panel 1 basically comprises a display module 3, a touch sensing film 2 and a cover plate 7, and is adhered to each other through an optical adhesive (OCA) 4. The touch sensing film 2 may be an Indium Tin Oxide (ITO) film commonly used in a touch panel process, the display module 3 may be a liquid crystal screen or an Organic Light Emitting Diode (OLED), and the cover plate 7 may be a glass cover plate, but is not limited thereto.

The touch sensing film 2 can be adhered to the upper surface 31 of the display module 3 through the optical adhesive 4, and partially folded back to a side surface 32 of the display module 3 through a reverse folding angle 20. A surface 21 of the touch sensing film 2 adhered to the display module 3 has a sensing electrode 51 and a frame circuit trace 52, and the sensing electrode 51 may specifically include a sensing line (Rx)511, an insulating layer 512, a driving line (Tx)513 and other components commonly found in a common touch module. The frame circuit traces 52 are electrically connected to the sensing electrodes 51 respectively and separated by another insulating layer 512, and the frame circuit traces 52 are used for transmitting the touch signals of the sensing electrodes 51 to driving circuit pins (not shown) of an Integrated Circuit (IC).

The other surface 22 of the touch sensing film 2 includes a positioning groove 6, the positioning groove 6 is disposed corresponding to the edge of the upper surface 31, specifically, the positioning groove 6 may be U-shaped or V-shaped and is disposed at the inflection angle 20. In this embodiment, the positioning groove 6 is a U-shaped groove, and the diameter V of the U-shaped groove is greater than 0.3 mm. The U-shaped groove structure can reduce the stress when the touch sensing film 2 is folded reversely. In addition, the positioning groove 6 can also be used as a positioning mark during the reverse folding process of the touch sensing film 2, and the laminating instrument can more accurately control the reverse folding position of the touch sensing film 2 during the laminating process of the touch panel 1. Preferably, the positioning slot 6 further includes a reinforcing structure 61, the reinforcing structure 61 is filled in the positioning slot, and the reinforcing structure 61 is filled in the positioning slot 6 after the touch sensing film 2 is folded back, and may be a structural adhesive or a reinforcing adhesive for enhancing the strength of the touch sensing film 2 at the back-folded and bent foot.

It should be noted that the distance between the sensing electrode 51 and the inflection angle 20 is reserved so that the sensing electrode 51 is not easily affected by the inflection of the touch sensing film, and preferably, the horizontal distance a between the sensing electrode 51 and the positioning groove 6 is greater than 1 millimeter (mm).

Please refer to fig. 5, which is a schematic diagram of a touch sensing film with an easy-to-fold structure according to a second embodiment of the present invention. In the second embodiment of the present invention, one surface 21 of the touch sensing film 2a having the easy-to-fold structure also has the sensing electrode 51 and the frame circuit trace 52, and the other surface 22 also includes a positioning groove 6a, which is different from the preferred embodiment of the present invention in that the positioning groove 6a is a V-shaped groove, and the width W of the V-shaped groove is greater than 0.6 mm.

Therefore, referring to all the drawings, the touch sensing film with the easy-to-reverse-fold structure provided by the invention has the advantages that compared with the prior art, the arrangement of the positioning groove can not only reduce the stress when the touch sensing film is reversely folded, but also provide the positioning mark, so that the touch sensing film can more accurately control the reverse-fold position.

Through the above detailed description, it is fully evident that the objects and effects of the present invention are advanced by practice, and have industrial applicability, and are fully in line with the patent requirements of the invention and the appended claims. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

1. A touch-control response film with easily turn over a structure is applied to a touch panel, and this touch-control response film is with a display module assembly upper surface looks adhesion of this touch panel to see through a side of turning over a corner part and turning over to this display module assembly, its characterized in that:

the touch control induction film comprises a positioning groove, the positioning groove is arranged at the inflection angle position and used for accurately controlling the inflection position and reducing the stress when the touch control induction film is inflected, the positioning groove further comprises a reinforcing structure, the reinforcing structure is filled in the positioning groove after the touch control induction film is inflected, and the reinforcing structure is structural glue or reinforcing glue and used for enhancing the strength of the touch control induction film at the inflection foot position.

2. The touch sensing film with an easy-to-reverse-fold structure as claimed in claim 1, wherein the touch sensing film is an indium tin oxide film.

3. The touch sensing film with an easy-to-reverse-fold structure as claimed in claim 1, wherein the positioning groove is U-shaped or V-shaped.

4. The touch sensing film with an easily foldable structure as claimed in claim 3, wherein a surface of the touch sensing film adhered to the display module has a sensing electrode and a border circuit trace, and the border circuit trace transmits a touch signal of the sensing electrode.

5. The touch sensing film with the easy-to-reverse-fold structure as claimed in claim 3, wherein the positioning groove is a U-shaped groove, and the diameter of the U-shaped groove is greater than 0.6 mm.

6. The touch sensing film with the easy-to-reverse-fold structure as claimed in claim 3, wherein the positioning groove is a V-shaped groove, and the width of the V-shaped groove is greater than 0.6 mm.

7. The touch sensing film with an easy-to-reverse-fold structure as claimed in claim 1, wherein the display module is a liquid crystal display or an organic light emitting diode.

8. The touch sensing film with an easy-to-reverse-fold structure as claimed in claim 4, wherein a horizontal distance between the sensing electrode and the positioning groove is greater than 1 mm.

9. The touch sensing film according to claim 4, wherein the sensing electrode comprises a sensing line, an insulating layer and a driving line, and the border circuit traces are electrically connected to the sensing electrode and separated from the sensing electrode by the insulating layer.

10. The touch sensing film with an easy-to-reverse-fold structure of claim 8, wherein the positioning groove and the sensing electrode are disposed on different surfaces of the touch sensing film, respectively.