CN108803949A - touch panel and manufacturing method thereof - Google Patents

Abstract

The invention discloses a touch panel, comprising: the substrate is provided with a fracture surface, a touch control surface and a back surface which are opposite; the adhesive layer is arranged on the back surface; an electrode layer having a cut surface, the electrode layer being connected to the back surface by the adhesive layer; the insulating glue covers the fracture surface and the cut surface and is filled in a gap between the substrate and the electrode layer; and the control chip is connected with and controls the electrode layer. Therefore, the touch panel can be a touch panel with a special size, does not need to be customized by a touch panel supplier, has the advantages of time saving, labor saving and low cost, and can be widely applied.

Description

Touch panel and manufacturing method thereof

technical field

The invention relates to a touch panel and its manufacturing method, in particular to a touch panel which can be cut into various special sizes through a convenient manufacturing process and its manufacturing method.

Background technique

With the development of technology, touch panels have been widely used in various display devices. This is because touch panels can replace separate input devices such as keyboards or mice that need to be connected to display devices, which is more convenient for users. to operate.

Conventional touch panels include, for example, resistive touch panels, photosensitive touch panels, and capacitive touch panels. When a user touches a display device with a touch panel with a finger or an object, the display device can, for example, sense a change in electrostatic capacitance generated by a conductive sensing pattern in combination with another conductive sensing pattern or a ground electrode. The contact position where the object touches the touch panel is converted into an electrical signal to activate the corresponding function of the display device.

However, general touch panel suppliers can only provide touch panels with specific sizes and specific aspect ratios. The mainstream sizes of smart phone screens are 4.7 inches, 5 inches, 5.5 inches, etc., and the aspect ratios of these displays or screens are mostly 4:3 or 16:9. When consumers want to use touch panels in more fields, such as traffic signal display, interactive advertising billboards, elevator operation panels and other display devices that require "special size" touch panels, they are often subject to Suppliers are limited by only being able to provide touch panels of a specific size and a specific aspect ratio.

If you want to ask suppliers to customize, firstly, it usually takes several months to set up new molds with special sizes and proportions, which is time-consuming and labor-intensive; secondly, the demand for these special-sized display panels is often small, and customized Transformation will greatly increase the purchase cost, thus limiting the application of touch panels.

Contents of the invention

The purpose of the present invention is to propose a touch panel that can be cut into various special sizes and its manufacturing method through a convenient manufacturing process, and can be made into special sizes without customization by the touch panel supplier. The touch panel can effectively solve the above-mentioned problem that the application of the touch panel is limited due to the time-consuming, labor-intensive and high cost of customization.

In order to achieve the above object and other objects, the present invention proposes a touch panel, comprising: a substrate having a broken surface and a relative touch surface and a back surface; an adhesive layer arranged on the back surface; an electrode layer having a cut surface, The electrode layer is connected to the back surface through the adhesive layer; the insulating glue covers the broken surface and the cut surface, and fills the gap between the substrate and the electrode layer; and a control chip , connect and control the electrode layer.

In the embodiment of the present invention, the control chip is connected to the electrode layer through a plurality of flexible flexible flat cables.

In an embodiment of the present invention, the touch panel further includes: a transmission connection component connected to the control chip.

In an embodiment of the present invention, the touch panel has a display area and a non-display area, the non-display area is disposed outside the display area and surrounds the display area, and the touch panel further includes: a frame disposed on the non-display area.

In an embodiment of the present invention, the electrode layer is made of indium tin oxide.

In order to achieve the above and other objectives, the present invention further proposes a method for manufacturing a touch panel, comprising: providing a touch panel mother sheet, the touch panel mother sheet comprising: a substrate having an opposite touch surface and a back surface; The adhesive layer is arranged on the back side; the electrode layer is connected to the back side through the adhesive layer; and the control chip is connected to and controls the electrode layer; the cutting step is based on the preset position, cutting and removing part of the electrode layer, so that the remaining electrode layer has a cut surface, and exposing part of the adhesive layer, wherein the control chip is connected to the remaining electrode layer; cleaning step, cleaning with a cleaning agent The exposed part of the adhesive layer; the splitting step, splitting the substrate at a place corresponding to the preset position on the substrate and removing part of the substrate, and the remaining substrate has a fractured surface; In the glue filling step, insulating glue is used to cover the fractured surface and the cut surface, and fill the gap between the remaining substrate and the remaining electrode layer.

In an embodiment of the present invention, before the splitting step, it also includes: an alignment step, using a cutting knife to form a knife mark on the substrate corresponding to a preset position, wherein the splitting step is based on the knife mark, and the substrate is carried out lobes.

In the embodiment of the present invention, the control chip is connected to the reserved electrode layer through a plurality of flexible flexible flat cables.

In an embodiment of the present invention, the mother chip of the touch panel further includes a transmission connection component, and the transmission connection component is connected to the control chip.

In an embodiment of the present invention, the touch surface of the reserved substrate has a display area and a non-display area, and the non-display area is disposed outside the display area and surrounds the display area, and the manufacturing method further includes: a shielding step, disposing the frame on on the non-display area.

Therefore, the present invention can cut the touch panel mother sheet provided by the touch panel supplier into a touch panel with a special size through a convenient manufacturing process, and does not need to go through the touch panel supplier for customer processing. Customization has the advantages of time-saving, labor-saving and low cost, so that the application of the touch panel can be more extensive.

Description of drawings

FIG. 1A is a front view of a touch panel according to an embodiment of the present invention.

FIG. 1B is a side view of a touch panel according to an embodiment of the present invention.

FIG. 2 is a flowchart of a manufacturing method of a touch panel according to an embodiment of the present invention.

3A to 3E are schematic diagrams of various stages in the manufacturing process of the touch panel according to the embodiment of the present invention.

Symbol Description:

1 Motherboard of touch panel

100 touch panel

10, 10' substrate

11 fracture surface

12, 12’ touch surface

121 display area

122 non-display area

13, 13' back

20, 20’ adhesive layer

30 30’ electrode layer

31 cut surface

40 insulating glue

50 control chip

60 flexible flexible flat cable

70 frames

S11～S21 process steps

D preset position

Detailed ways

In order to fully understand the present invention, the present invention will be described in detail by means of the following specific embodiments together with the accompanying drawings. Those skilled in the art can understand the purpose, features and effects of the present invention from the content disclosed in this specification. It should be noted that the present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention. . In addition, the accompanying drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the technical scope of the present invention. The instructions are as follows:

FIG. 1A is a front view of a touch panel 100 according to an embodiment of the present invention. FIG. 1B is a side view of the touch panel 100 according to the embodiment of the present invention. As shown in FIGS. 1A and 1B , the touch panel 100 of the embodiment of the present invention includes a substrate 10 , an adhesive layer 20 , an electrode layer 30 , an insulating glue 40 and a control chip 50 . The substrate 10 has a broken surface 11 and opposite touch surface 12 and back surface 13 . The adhesive layer 20 is disposed on the back surface 13 of the substrate 10 . The electrode layer 30 has a cut surface 31 , and the electrode layer 30 is connected to the back surface 13 through the adhesive layer 20 . The insulating glue 40 covers the broken surface 11 and the cut surface 31 , and fills the gap between the substrate 10 and the electrode layer 30 . The control chip 50 is connected to and controls the electrode layer 30 .

In this embodiment, the substrate 10 is, for example, a glass substrate, and the material of the electrode layer 30 is, for example, indium tin oxide (ITO). The control chip 50 can be connected to the electrode layer 30 through a plurality of flexible flat cables (FFC) 60 to control a plurality of circuit patterns (not shown) on the electrode layer 30 . In addition, the touch panel 100 further includes a transmission connection component (not shown), and the transmission connection component is connected to the control chip 50 . For example, the transport connection component may be a Universal Serial Bus (USB) component.

As shown in FIG. 1A , the touch surface 12 of the substrate 10 has a display area 121 and a non-display area 122 , and the non-display area 122 is disposed outside the display area 121 and surrounds the display area 121 . The display area 121 can be touched by a user with a finger or an object. In addition, the touch panel 100 further includes a frame 70 disposed on the non-display area 122 .

The touch panel 100 of the embodiment of the present invention can be applied to display devices that require a touch panel of a special size, such as traffic signal display, interactive advertising billboards, and operation panels in elevators, and the touch panel of the embodiment of the present invention 100 can be made without customization by touch panel suppliers. Details will be given below.

FIG. 2 is a flowchart of a manufacturing method of the touch panel 100 according to an embodiment of the present invention. 3A to 3E are schematic diagrams of various stages in the manufacturing process of the touch panel 100 according to the embodiment of the present invention. It should be noted that, for a clearer description, FIGS. 3A-3E show front views and side views of the touch panel 100 at various stages.

As shown in FIG. 2 and FIG. 3A , in step S11 , a touch panel mother sheet 1 is provided. The touch panel mother sheet 1 can be provided by a common touch panel supplier, and has a touch panel with a mainstream size. The touch panel mother sheet 1 includes a substrate 10', an adhesive layer 20', an electrode layer 30' and a control chip 50. The substrate 10' has a touch surface 12' and a back surface 13' opposite to each other. The adhesive layer 20' is disposed on the back surface 13' of the substrate 10'. The electrode layer 30' is connected to the back surface 13' via the adhesive layer 20'. The control chip 50 is connected to and controls the electrode layer 30', and the control chip 50 can be connected to the electrode layer 30 through a plurality of flexible flat cables (FFC) 60. In addition, the touch panel motherboard 1 further includes a transmission connection component (not shown), and the transmission connection component is connected to the control chip 50 .

As shown in FIG. 2 and FIG. 3B , step S13 is a cutting step. In the cutting step, a part of the electrode layer 30' is cut and separated based on the preset position D, so that the remaining electrode layer 30 has a cut surface 31 and a part of the adhesive layer 20' is exposed. In this embodiment, the control chip 50 is still connected to the remaining electrode layer 30 through a plurality of flexible flexible flat cables 60 .

As shown in FIG. 2 and FIG. 3C , step S15 is a cleaning step. In the cleaning step, the exposed portion of the adhesive layer 20' is removed with a cleaning agent. In an embodiment, the cleaning agent is, for example, spot-removing water or other solvents that can be used for glue removal. The remaining adhesive layer is the component indicated by reference numeral 20 in FIG. 3C .

As shown in FIG. 2 and FIG. 3D , step S17 is a splitting step. In the splitting step, the substrate 10' is split at the place corresponding to the preset position D on the substrate 10' and part of the substrate 10' (and part of the adhesive layer 20' and the electrode layer 30') are removed, so that the remaining The substrate 10 has a fractured surface 11 .

In an embodiment, an alignment step may be further included before the splitting step in step S17. In the alignment step, a cutting knife is used to form knife marks on the substrate 10' corresponding to the preset position D, and in the subsequent step S17, the splitting step uses the knife marks as a reference to split the substrate 10'.

It should be noted that the electrode layer 30', the adhesive layer 20' and the substrate 10' of the touch panel mother sheet 1 are processed separately in the aforementioned steps S13 to S17, instead of being cut directly at the same time, because the direct simultaneous cutting is likely to produce adhesive residue And pollute the remaining electrode layer 30 and the substrate 10 , resulting in lower yield. Through the aforementioned steps S13 to S17 of the embodiment of the present invention, the problem of reduced yield caused by residual glue pollution can be effectively avoided.

As shown in FIG. 2 and FIG. 3E , step S19 is a glue filling step. In the glue filling step, the insulating glue 40 covers the broken surface 11 and the cut surface 31 , and fills the gap between the remaining substrate 10 and the remaining electrode layer 30 .

As shown in FIG. 2, step S21 is a masking step. After the masking step, the touch panel 100 as shown in FIGS. 1A and 1B can be completed. Referring to FIG. 1A and FIG. 1B simultaneously, the remaining touch surface 12 of the substrate 10 has a display area 121 and a non-display area 122, the non-display area 122 is arranged outside the display area 121 and surrounds the display area 121, and in the masking step, The frame 70 is disposed on the non-display area 122 .

It can be seen from the above description that, through the manufacturing method of the embodiment of the present invention, the touch panel mother sheet 1 provided by the general touch panel supplier, which has a mainstream size and a specific aspect ratio, can be manufactured through a convenient manufacturing process. The touch panel 100 with a special size and ratio can be applied to a display device requiring a touch panel with a special size without asking the supplier for customization.

For example, the preset position D shown in FIG. 3B to FIG. 3D can be set at 1/2 of the wide side of the mother sheet 1 of the 32-inch touch panel with an aspect ratio of 16:9. It is cut into a touch panel 100 of about 29 inches and an aspect ratio of 32:9; or, the preset position D can be set at the wide side of the touch panel mother sheet 1 of 32 inches and an aspect ratio of 16:9 It can be cut into a touch panel 100 of about 28 inches and an aspect ratio of 16:3.

Therefore, the touch panel 100 with a special size and aspect ratio cut by the present invention through a convenient manufacturing process does not need to be customized by the touch panel supplier, and is time-saving, labor-saving and low-cost. Advantages, the application of the touch panel 100 can be more extensive.

The present invention has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention, and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to this embodiment should be deemed to fall within the scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims (10)

1. A touch panel, characterized in that, comprising: a substrate having a fractured surface and an opposite touch surface and a back surface; an adhesive layer disposed on the back; an electrode layer having a cut surface, and the electrode layer is connected to the back surface through the adhesive layer; insulating glue, covering the fractured surface and the cut surface, and filling the gap between the substrate and the electrode layer; and The control chip connects and controls the electrode layer. 2 . The touch panel according to claim 1 , wherein the control chip is connected to the electrode layer through a plurality of flexible flexible flat cables. 3. The touch panel according to claim 1, further comprising: The transmission connection part is connected to the control chip. 4. The touch panel according to claim 1, wherein the touch surface has a display area and a non-display area, the non-display area is arranged outside the display area and surrounds the display area, And the touch panel also includes: The frame is set on the non-display area. 5. The touch panel according to claim 1, wherein the material of the electrode layer is indium tin oxide. 6. A method for manufacturing a touch panel, comprising: A touch panel master sheet is provided, wherein the touch panel master sheet includes: a substrate having an opposite touch surface and a back surface; an adhesive layer disposed on the back; an electrode layer connected to the back side by the adhesive layer; and A control chip, connected to and controlling the electrode layer; The cutting step is to cut and separate part of the electrode layer based on the preset position, so that the remaining electrode layer has a cut surface and expose part of the adhesive layer, wherein the control chip is connected to the remaining part of the electrode layer. the electrode layer; A cleaning step, using a cleaning agent to remove the exposed part of the adhesive layer; splitting step, splitting the substrate at a position corresponding to the preset position on the substrate and removing part of the substrate, so that the remaining substrate has a fractured surface; In the glue filling step, insulating glue is used to cover the fractured surface and the cut surface, and fill the gap between the remaining substrate and the remaining electrode layer. 7. The manufacturing method according to claim 6, characterized in that, before the splitting step, further comprising: In the aligning step, a cutting knife is used to form knife marks on the substrate corresponding to the predetermined position, wherein the splitting step splits the substrate based on the knife marks. 8. The manufacturing method according to claim 6, wherein the control chip is connected to the remaining electrode layer through a plurality of flexible flexible flat cables. 9 . The manufacturing method according to claim 6 , wherein the touch panel mother sheet further comprises a transmission connection component, and the transmission connection component is connected to the control chip. 10. The manufacturing method according to claim 6, wherein the remaining touch surface of the substrate has a display area and a non-display area, and the non-display area is arranged outside the display area and surrounds the display area, and the manufacturing method further comprises: In the masking step, the frame is set on the non-display area.