CN213876676U

CN213876676U - Touch screen

Info

Publication number: CN213876676U
Application number: CN202023074771.5U
Authority: CN
Inventors: 刘陆恒
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-03
Anticipated expiration: 2030-12-18

Abstract

The utility model is suitable for the field of touch display screens, and provides a touch screen, which comprises a substrate, a conductive layer and a lead wire, wherein the conductive layer and the lead wire are arranged on the substrate; the conducting layer is arranged on the substrate and comprises a plurality of conducting channels; and the lead is arranged at the base edge frame, one end of the lead is connected with the circuit board, the other end of the lead is connected with the conductive channel through a connecting piece, and the lead is directly printed on the base by adopting 3D printing. The lead wires of the touch screen can be made into small diameters, so that the overall width of the lead wires arranged on the frame of the screen is greatly reduced, and the touch screen can be made into a narrow frame structure.

Description

Touch screen

Technical Field

The utility model belongs to touch display screen field especially relates to a touch-sensitive screen.

Background

With more and more electronic terminals equipped with touch screens, research and development of narrow frames of capacitive touch screens are the key points of competition of various companies in recent 10 years, and capacitive touch screens are also diversified in manufacturing processes, such as an ITO (Indium tin oxide) process, a nano silver process, a Metal Mesh process, a 3D copper wire printing process, a G + G (surface tempered GLASS + GLASS frit material) etching process, and the like.

The structure of a touch control type capacitive screen in the prior art is as follows: the conductive layer is connected to the electrode through a lead wire, and then connected to a PCB (Printed Circuit Board) with an IC chip through an FPC (Flexible Printed Circuit), thereby realizing a touch function.

However, as the size of the capacitive screen increases, the number of channels of the conductive layer increases, the number of required leads increases, and the frame is difficult to be narrow.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a touch screen aims at solving current touch screen frame and hardly does narrow problem.

The embodiment of the utility model provides a realize like this, the touch-sensitive screen includes:

the substrate is used for laying a conductive layer and a lead;

the conducting layer is arranged on the substrate and comprises a plurality of conducting channels; and

and the lead is arranged at the base side frame, one end of the lead is connected with the circuit board, the other end of the lead is connected with the conductive channel through a connecting piece, and the lead is directly printed on the base by adopting 3D printing.

Preferably, the connecting member and the conductive path are connected by welding.

Preferably, the end of the conductive channel is provided with a protrusion, which is adapted to the shape of the connector and connected to the connector.

Preferably, the lead diameter is less than 5 um.

Preferably, the leads are adjacent without gaps, and the surfaces of the leads are provided with insulating layers.

Preferably, a groove is formed in the substrate, the conductive layer is printed in the groove, the conductive layer includes a first conductive channel and a second conductive channel, and the first conductive channel and the second conductive channel are uniformly distributed in the conductive layer in a crossed manner.

Preferably, the first conductive paths are transversely arranged, a plurality of adjacent conductive paths in a set number are connected with the lead wires from one side of the conductive layer through the connecting pieces, and the rest conductive paths are connected with the lead wires from the other side of the conductive layer through the connecting pieces.

Preferably, the electrode terminal of the circuit board is correspondingly connected with the lead.

Preferably, the circuit board is flexible and is arranged on the top of the substrate.

Preferably, the touch screen frame is an area not covered by the conductive layer, and the width of the touch screen frame is less than 2 mm.

The embodiment of the utility model provides a pair of touch-sensitive screen can be done very little diameter with the lead wire of touch-sensitive screen, and then makes the lead wire overall width that the screen frame was arranged reduce by a wide margin, and the narrow frame structure can be made to the touch-sensitive screen.

Drawings

Fig. 1 is a schematic structural diagram of a touch screen according to an embodiment of the present invention;

fig. 2 is a partial enlarged view of a position a of a touch screen according to an embodiment of the present invention;

fig. 3 is a welding diagram of a connecting member of a touch screen according to an embodiment of the present invention.

In the drawings: 1. a substrate; 21. a first conductive path; 22. a second conductive path; 3. a connecting member; 4. a lead wire; 5. a circuit board; 51. an electrode terminal; 6. a protrusion; 7. and (3) soldering flux.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1, for the embodiment of the present invention provides a structure diagram of a touch screen, including:

a substrate 1 for laying a conductive layer and a lead 4;

the conducting layer is arranged on the substrate 1 and comprises a plurality of conducting channels; and

and the lead 4 is arranged at the frame of the substrate 1, one end of the lead 4 is connected with the circuit board 5, the other end of the lead is connected with the conductive channel through the connecting piece 3, and the lead 4 is directly printed on the substrate 1 by adopting 3D printing.

The embodiment of the utility model provides an in, lay electrically conductive passageway and lead wire 4 on basement 1, connect electrically conductive passageway and lead wire 4 through connecting piece 3, make the electricity between connecting piece 3 and the electrically conductive passageway connect steadily and pass through reliably, and simultaneously, although the setting of connecting piece 3 has been increased, but can directly utilize 3D to print the copper line on basement 1, realize directly printing the copper line on the basement, and 3D prints the copper line and can reduce the wire diameter that leads by a wide margin, and then arrange and wholly reduce at the shared width of lead wire of touch-sensitive screen frame, make the frame of touch-sensitive screen do more narrowly, increase connecting piece 3 simultaneously and make the welding yields improvement of lead wire 4 and electrically conductive passageway spare.

In an example of the present invention, the conductive channel is printed on the conductive layer, the conductive layer is a transparent structure, and the display is not affected, and the lead 4 is visible, so that the coverage area of the lead 4 is an opaque structure, and the frame of the touch screen is an opaque area.

As a preferred embodiment of the present invention, the connecting member 3 is connected to the conductive channel by welding. Coating scaling powder 7 on connecting piece 3 utilizes laser welding, links together electrically conductive passageway and lead wire 4 through connecting piece 3, makes the connection of lead wire 4 and electrically conductive passageway more reliable, and coating scaling powder 7 can be directly in the same place lead wire 4 and electrically conductive passageway welding when the welding on connecting piece 3, makes the welding yields improve, and laser welding is accurate fast, and welding efficiency is high.

As a preferred embodiment of the present invention, the end of the conductive channel is provided with a protrusion 6, and the protrusion 6 is adapted to the shape of the connecting member 3 and connected to the connecting member 3. The conductive channel is provided with a rectangular protruding part 6, the protruding direction of the protruding part 6 is the extending direction of the conductive channel, the connecting piece 3 can be rectangular or convex, and the connecting piece 3 is located in the frame area. The wider end of the convex-shaped connecting piece 3 is correspondingly connected with the protruding part 6, the narrower protruding end is correspondingly connected with the lead 4, the lead 4 can be connected with the conductive channel, the protruding end is connected with the lead 4, so that the transition between the lead 4 and the conductive channel is more stable, and the contact short circuit between different leads 4 or conductive channels is prevented.

As an embodiment of the utility model, lead wire 4 diameter is less than 5um, and the direct printing copper line can be printed the diameter of copper line for 5um on basement 1, and the width of arranging of copper line is corresponding to be reduced, and then can directly reduce the width of frame.

As a preferred embodiment of the present invention, the leads 4 are adjacent without a gap therebetween, and the surface of the lead 4 has an insulating layer. Directly print the copper line on basement 1 and can print the diameter of copper line as 5um, the copper line still surface is provided with the insulating layer simultaneously, can connect different lead wires 4 gaplessly, further reduces the width of frame.

As a preferred embodiment of the present invention, a groove is disposed on the substrate 1, the conductive layer is printed in the groove, the conductive layer includes a first conductive path 21 and a second conductive path 22, and a plurality of the first conductive paths 21 and the second conductive paths 22 are uniformly distributed on the conductive layer in a crossing manner. According to the number of the conductive channels, grooves are correspondingly formed in the substrate 1, and the conductive channels are printed in the grooves.

As a preferred embodiment of the present invention, the first conductive channel 21 is transversely disposed, and a plurality of the adjacent conductive channels pass through the connecting member 3 and the lead 4 from one side of the conductive layer, and the rest of the conductive channels pass through the connecting member 3 and the lead 4 from the other side of the conductive layer. One end of one part of the first conductive channel 21 is connected with the lead 4 through the connecting piece 3, the rest of the first conductive channels 21 are connected with the lead 4 from the other side through the connecting piece 3, the frames on the two sides are connected through the lead 4, the arrangement width of the lead 4 can be distributed to the two sides, and the width of the frames is narrower.

As a preferred embodiment of the present invention, the electrode terminal 51 of the circuit board 5 and the lead 4 are correspondingly connected to make the conductive layer be connected with the circuit board 5 electrically, so as to realize the touch function of the touch screen.

As a preferred embodiment of the present invention, the circuit board 5 is flexible, and is disposed on the top of the substrate 1, and the flexible circuit board 5 can be folded, so that the width of the frame on the upper end of the touch screen can be narrowed accordingly.

As a preferred embodiment of the present invention, the touch screen frame is not covered in the area of the conductive layer, and the width of the touch screen frame is less than 2 mm. Through setting up connecting piece 3 and directly printing the copper line on basement 1, arrange the copper line gaplessly again, can make the whole less than 2mm of frame width of touch-sensitive screen.

The utility model provides an in the above-mentioned embodiment, lay conductive channel and lead wire 4 on basement 1, conductive channel and lead wire 4 are connected to connecting piece 3, make the electricity between connecting piece 3 and conductive channel connect steadily and pass through reliably, and simultaneously, although the setting of connecting piece 3 has been increased, but can directly utilize 3D to print the copper line on basement 1, the frame that makes the touch-sensitive screen does more narrowly, it makes the welding yields of lead wire 4 and conductive channel spare improve to increase connecting piece 3 simultaneously, and then lead wire 4 diameter reduces, the 4 total widths of lead wire that the screen frame was arranged reduce by a wide margin, the narrow frame structure can be made to the touch-sensitive screen.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A touch screen, characterized in that the touch screen comprises:

the substrate is used for laying a conductive layer and a lead;

2. The touch screen of claim 1, wherein the connector and the conductive via are soldered.

3. The touch screen of claim 1, wherein the conductive channel ends are provided with protrusions that are adapted to the shape of the connectors and are connected to the connectors.

4. The touch screen of claim 1, wherein the lead wire diameter is less than 5 um.

5. The touch screen of claim 1 or 4, wherein the leads are adjacent without a gap therebetween, and an insulating layer is formed on the surfaces of the leads.

6. The touch screen of claim 1, wherein the substrate is provided with a groove, the conductive layer is printed in the groove, the conductive layer comprises a first conductive channel and a second conductive channel, and a plurality of the first conductive channels and the second conductive channels are uniformly distributed on the conductive layer in a crossed manner.

7. The touch screen of claim 6, wherein the first conductive paths are arranged laterally, a number of adjacent first conductive paths are connected to the leads from one side of the conductive layer via the connectors, and the remaining first conductive paths are connected to the leads from the other side of the conductive layer via the connectors.

8. The touch screen of claim 1, wherein the electrode terminals of the circuit board and the leads are correspondingly connected.

9. The touch screen of claim 1, wherein the wiring board is flexible and is disposed on top of the substrate.

10. The touch screen of claim 1, wherein the touch screen bezel is an area not covered by the conductive layer, and wherein the width of the touch screen bezel is less than 2 mm.