CN108762558B

CN108762558B - Touch screen, display module with touch screen and electronic device

Info

Publication number: CN108762558B
Application number: CN201810501824.5A
Authority: CN
Inventors: 罗成
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-05-23
Filing date: 2018-05-23
Publication date: 2021-06-04
Anticipated expiration: 2038-05-23
Also published as: CN108762558A

Abstract

The invention is suitable for the technical field of touch screens, and provides a touch screen, a display module with the touch screen and an electronic device. The touch screen comprises a touch area and a frame area, wherein the touch area is provided with a first conductive glass wire which is longitudinally distributed and a second conductive glass wire which is transversely distributed. The frame area is provided with first driving wires and second driving wires, each first driving wire is electrically connected with one first conductive glass wire corresponding to the first driving wire, and a first closed loop is formed. Each second driving wire is electrically connected with one second conductive glass wire corresponding to the second driving wire, and a second closed loop is formed. The second drive is walked the line and is connected rather than the second conductive glass who corresponds and walk the line electricity, has formed the confined loop, has avoided the second conductive glass to walk the line "end" appear to static accumulation can not appear to the problem of "end", has increased touch-sensitive screen's interference killing feature.

Description

Touch screen, display module with touch screen and electronic device

Technical Field

The invention belongs to the technical field of touch screens, and particularly relates to a touch screen, a display module with the touch screen and an electronic device.

Background

Touch screens have become one of the most important media for human-computer interaction. Meanwhile, the touch screen is also very easy to be interfered, so that the problems of point error reporting, permanent damage of ITO and ITO bridging and the like are caused. The "ends" of the ITO traces, however, are the most vulnerable areas to interference and damage because of their weakest discharge capability.

The touch screen comprises a plurality of driving lines distributed in rows and columns. Each row driving line is led out from the driving IC and then respectively wired to the lower side and the upper side of the touch screen, then the row driving lines on the upper side and the lower side are connected together through the ITO wiring in the touch screen, and finally all the row driving lines are 'annular' wiring without wiring 'tail ends'. And each row driving line is led out from the driving IC, then is wired to the right side of the touch screen, and then is wired to the left side of the touch screen through the ITO in the touch screen, and all the row driving lines are wired at the left side of the touch screen to form tail ends. Therefore, the tail end of the trace in the existing trace design of the touch screen is an easily interfered area, and is easily interfered by the outside and the display screen, and for this reason, it is necessary to improve the trace design of the existing touch screen.

Disclosure of Invention

The embodiment of the invention can avoid the problem of tail end of the wiring design of the touch screen and increase the anti-interference capability of the touch screen.

The embodiment provides a touch screen, which comprises a touch area and a frame area, wherein the frame area surrounds the periphery of the touch area; first conductive glass wires which are longitudinally distributed and second conductive glass wires which are transversely distributed are distributed on the touch area; first driving wires are distributed on the frame area, each first driving wire is electrically connected with a corresponding first conductive glass wire to form a first closed loop, and each first closed loop leads out a first outgoing line which is electrically connected with an external driving chip from the edge of the frame area; second driving wires are distributed on the frame area, each second driving wire is electrically connected with a corresponding second conductive glass wire to form a second closed loop, and each second closed loop leads out a second outgoing line which is electrically connected with an external driving chip from the edge of the frame area.

Furthermore, a plurality of first conductive glass routing wires distributed at intervals along the transverse direction of the touch area are distributed on the touch area.

Furthermore, a plurality of second conductive glass routing wires distributed at intervals along the transverse direction of the touch area are distributed on the touch area.

Further, the first closed loop and/or the second closed loop are rectangular.

Furthermore, the crossing position of the first conductive glass wire and the second conductive glass wire and/or the crossing position of the first driving wire and the second driving wire are bridged by a bridge; each bridging comprises a first conductive column piece, a second conductive column piece, a conductive cross beam and an insulating block; one end of the cross beam is fixedly connected with the top of the first column piece, the other end of the cross beam is fixedly connected with the top of the second column piece, and the insulating block is fixed under the cross beam; the first column piece and the second column piece are respectively and fixedly connected with the two disconnected first conductive glass wires/the two disconnected second conductive glass wires.

Further, the insulating block is made of poly terephthalic acid plastic.

Further, the frame region is a flexible circuit board, and the first driving wire and the second driving wire are arranged on a conductive layer on the flexible circuit board.

This embodiment still provides a display module assembly for solving above-mentioned technical problem, including the display screen, display module assembly still includes foretell touch-sensitive screen, the bottom surface of touch-sensitive screen bonds on the top surface of display screen.

Furthermore, an insulating sheet is further bonded between the touch screen and the display screen.

In order to solve the above technical problem, the present embodiment further provides an electronic device, which includes a driving chip and the touch screen, where the driving chip is electrically connected to the first outgoing line and the second outgoing line of the touch screen.

Compared with the prior art, the embodiment has the advantages that: the touch screen of this embodiment is equipped with the second drive on the frame region and walks the line, and the second drive is walked the line and is connected with the electrically conductive glass of second that corresponds and walk the line electricity, has formed the confined loop, has avoided the electrically conductive glass of second to walk the line "end" to static accumulation to the problem of "end" can not appear, has increased the interference killing feature of touch screen.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

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

fig. 2 is a schematic structural diagram illustrating a first conductive glass trace and a second conductive glass trace connected by a bridge in the first embodiment;

FIG. 3 is a schematic structural diagram of a display module according to an embodiment;

fig. 4 is a schematic view of a connection structure between a touch screen and a driving chip in an electronic device according to a first embodiment;

FIG. 5 is a schematic front view of an electronic device according to a first embodiment;

fig. 6 is a schematic structural diagram of a touch screen according to a second embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, 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 first embodiment is as follows:

referring to fig. 1, a touch screen 100 according to an embodiment of the present invention includes a touch area 10 and a frame area 20, where the frame area 20 is disposed around a periphery of the touch area 10. A first conductive glass wire 11 which is longitudinally distributed and a second conductive glass wire 12 which is transversely distributed are distributed on the touch area 10; the frame area 20 is provided with first driving traces 21, each first driving trace 21 is electrically connected with a corresponding first conductive glass trace 11 to form a first closed loop, and each first closed loop leads out a first outgoing line 13 which is electrically connected with an external driving chip from the edge of the frame area 20. In addition, second driving traces 22 are further disposed on the frame region 20, each second driving trace 22 is electrically connected to a corresponding second conductive glass trace 12 to form a second closed loop, and each second closed loop leads a second outgoing line 23 for electrically connecting to an external driving chip to the edge of the frame region 20.

The touch screen 100 of this embodiment is provided with the second driving wire 22 on the frame region 20, and the second driving wire 22 is electrically connected to the second conductive glass wire 12 corresponding thereto, so as to form a closed loop, thereby avoiding the occurrence of "end" of the second conductive glass wire 12, avoiding the occurrence of the problem of electrostatic accumulation to the "end" and increasing the anti-interference capability of the touch screen 100.

Specifically, the touch area 10 is disposed with a plurality of first conductive glass traces 11 spaced apart from each other along a transverse direction of the touch area 10. A plurality of second conductive glass traces 12 are disposed on the touch area 10 and spaced apart from each other along a transverse direction of the touch area 10. The first closed loop and the second closed loop are both rectangular.

In this embodiment, the crossing positions of the first conductive glass trace 11 and the second conductive glass trace 12 (see fig. 2) and the crossing positions of the first driving trace 21 and the second driving trace 22 are bridged.

Each bridge comprises a first conductive pillar 31, a second conductive pillar 32, a conductive beam 33, and an insulating block 34. One end of the beam 33 is fixedly connected with the top of the first column 31, the other end of the beam 33 is fixedly connected with the top of the second column 32, and the insulating block 34 is fixed right below the beam 33; the first pillar 31 and the second pillar 32 are respectively and fixedly connected with the two disconnected first conductive glass traces 11 or the two disconnected second conductive glass traces 12. Optionally, the insulating block 34 is made of a terephthalic acid plastic with good insulating property. By breaking one of the two crossed wires and keeping the other wire continuous, the two disconnected driving wires or conductive glass wires are electrically connected together through bridging, so that the electrical connection of the crossed wires is realized, meanwhile, when static electricity is coupled to the cross beam 33 from the display screen, the insulating block 34 is arranged to prevent the static electricity from being coupled to the wires below the cross beam 33, and the bridging and the wires are effectively prevented from being damaged by the static electricity due to interference.

Referring to fig. 3, the present embodiment further provides a display module, which includes a display screen 200 and the touch screen 100, wherein the bottom surface of the touch screen 100 is adhered to the top surface of the display screen 200. Since the static electricity absorbed by the display panel 200 is easily coupled to the touch panel 100, the touch panel 100 is interfered, and the problem of erroneous touch point occurs, the insulating sheet 400 is adhered between the touch panel 100 and the display panel 200 by the adhesive 300. The insulating sheet 300 is made of a terephthalic acid plastic with good insulating property, and can block the coupling path of interference energy on the display screen 200 to the touch screen 100, and enhance the anti-interference capability of the touch screen 100.

Referring to fig. 4 and fig. 5, the present embodiment further provides an electronic device, which includes a driving chip 500 and the touch screen 100, wherein the driving chip 500 is electrically connected to the first outgoing line 13 and the second outgoing line 23 of the touch screen 100. In practical application, the electronic device can be an electronic device with a man-machine interaction function, such as a mobile phone, a tablet computer, an intelligent watch and the like.

Example two:

the present embodiment is substantially the same as the first embodiment except for the following. The same contents are not described in detail herein.

Referring to fig. 6, a frame area 20 'of the touch screen 100' of the present embodiment is a flexible circuit board, and the first driving trace 11 and the second driving trace 12 are disposed on a conductive layer on the flexible circuit board. The first driving trace 11 and the second driving trace 12 may be copper foil layers on a flexible circuit board, and multiple copper foil layers may be disposed on the flexible circuit board, so that the crossed driving traces may be respectively located in different copper foil layers. In addition, because the frame region 20 ' is flexible, the frame region 20 ' can be folded back relative to the touch region 10, and the folded-back frame region 20 ' can be disposed below the touch region 10, so that the space on the side of the touch region 10 is not occupied, which is beneficial to the narrow frame design of the electronic device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The touch screen comprises a touch area and a frame area, wherein the frame area surrounds the periphery of the touch area; first conductive glass wires which are longitudinally distributed and second conductive glass wires which are transversely distributed are distributed on the touch area; two ends of the first conductive glass wire respectively extend to the upper side and the lower side of the touch area, first driving wires are distributed on the frame area, two ends of each first driving wire are respectively and electrically connected with two ends of a first conductive glass wire corresponding to the first driving wire, and form a first closed loop, and each first closed loop leads out a first outgoing line which is used for being electrically connected with an external driving chip from the edge of the frame area; the touch screen is characterized in that two ends of the second conductive glass wires respectively extend to the left side and the right side of the touch area, second driving wires are distributed on the frame area, two ends of each second driving wire are respectively and electrically connected with two ends of a second conductive glass wire corresponding to the second driving wire, a second closed loop is formed, and each second closed loop leads out a second outgoing line which is used for being electrically connected with an external driving chip from the edge of the frame area.

2. The touch screen of claim 1, wherein the touch area has a plurality of the first conductive glass traces disposed thereon at intervals along a lateral direction of the touch area.

3. The touch screen of claim 1, wherein the touch area has a plurality of second conductive glass traces disposed thereon at intervals along a lateral direction of the touch area.

4. A touch screen according to any of claims 1 to 3, wherein the first closed loop and/or the second closed loop are rectangular.

5. The touch screen according to any one of claims 1 to 3, wherein the crossing position of the first conductive glass trace and the second conductive glass trace and/or the crossing position of the first driving trace and the second driving trace are bridged by a bridge; each bridging comprises a first conductive column piece, a second conductive column piece, a conductive cross beam and an insulating block; one end of the cross beam is fixedly connected with the top of the first column piece, the other end of the cross beam is fixedly connected with the top of the second column piece, and the insulating block is fixed under the cross beam; the first column piece and the second column piece are respectively and fixedly connected with the two disconnected first conductive glass wires/the two disconnected second conductive glass wires.

6. The touch screen of claim 5, wherein the insulating block is made of a poly-p-phthalic plastic.

7. The touch screen according to any one of claims 1 to 3, wherein the frame region is a flexible circuit board, and the first driving traces and the second driving traces are disposed on a conductive layer on the flexible circuit board.

8. A display module comprising a display screen, wherein the display module further comprises the touch screen of any one of claims 1 to 7, and wherein a bottom surface of the touch screen is bonded to a top surface of the display screen.

9. The display module of claim 8, wherein an insulating sheet is bonded between the touch panel and the display panel.

10. An electronic device comprising a driving chip, wherein the electronic device further comprises the touch screen of any one of claims 1 to 7, and the driving chip is electrically connected to a first lead line and a second lead line of the touch screen.