CN218886565U

CN218886565U - Touch screen capable of ensuring consistency and uniformity of data of whole screen

Info

Publication number: CN218886565U
Application number: CN202222879022.2U
Authority: CN
Inventors: 孙丽娜; 刘永强
Original assignee: Xingyuan Electronic Technology Shenzhen Co Ltd
Current assignee: Xingyuan Electronic Technology Shenzhen Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-18
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses a touch screen capable of ensuring the consistency and uniformity of the data of the whole screen, which comprises a cover plate, a FPC (flexible printed circuit) flat cable and a sensor functional sheet, wherein the sensor functional sheet is attached to the cover plate and is provided with a TX driving layer circuit and an RX sensing layer circuit; the TX driving layer circuit is integrated at the long side of the sensor functional sheet and is bound to the FPC flat cable; the RX induction layer circuit is integrated at the short side of the sensor functional sheet. The wire is bound into two sections of binding through the FPC winding displacement and the sensor function piece, the design is reasonable and compact, the TX driving layer circuit in the sensor function piece is integrated to the long side of the TX driving layer circuit, the RX sensing layer circuits are distributed on the two short sides of the RX sensing layer circuit, the RX sensing layer circuits are led out simultaneously from the two sides and then combined into one metal wire, and then the metal wire is bound and connected with the FPC.

Description

Touch screen capable of ensuring consistency and uniformity of data of whole screen

Technical Field

The utility model relates to a touch-sensitive screen technical field especially relates to a guarantee touch-sensitive screen of whole screen data uniformity and homogeneity.

Background

In the GFF structure that present dull and stereotyped and smart mobile phone touch-sensitive screen below 10.1inch adopted, the TX drive layer circuit of sensor function piece and RX response layer circuit are qualified for the next round of competitions and are mostly adopted unilateral wiring design (like figure 1), although the wiring is simple, has saved the space, but ITO passageway impedance of this type of structural design is big, and touch accuracy is also lower, influences the data uniformity and the homogeneity of whole screen, reduces the actual impression that the user used.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem who proposes in the background art, the utility model provides a guarantee touch-sensitive screen of whole screen data uniformity and homogeneity.

The utility model discloses a following technical scheme realizes: a touch screen for ensuring data consistency and uniformity across the screen, comprising:

a cover plate;

FPC cable arrangement; and

a sensor function sheet attached to the cover plate, the sensor function sheet having a TX driving layer line and an RX sensing layer line; the TX driving layer circuit is integrated on the long side of the sensor functional sheet and is bound on the FPC flat cable; the RX induction layer circuit is integrated on the short sides of the sensor functional sheet, the RX induction layer circuit is respectively provided with a first outgoing line side and a second outgoing line side at the two short sides, and the first outgoing line side and the second outgoing line side are combined and bound on the FPC flat cable after outgoing.

As a further improvement of the above scheme, the second wire outlet side extends around the outer peripheral side of the sensor functional sheet after being wire outlet to be combined with the first wire outlet side after being wire outlet.

As a further improvement of the above solution, the FPC cable has a bonding region thereon, the bonding region is divided into a first region and a second region which are spaced apart from each other, the TX driving layer line is bonded to the first region, and the RX sensing layer line is bonded to the second region.

As a further improvement of the above scheme, two third GND PINs are arranged in the first area, and a plurality of second PIN PINs are sequentially arranged between the two third GND PINs.

As a further improvement of the above aspect, the second area is equally divided into a first section and a second section, the first outgoing line edge is bound to the first section, and the second outgoing line edge is bound to the second section.

As a further improvement of the above scheme, a plurality of first PIN PINs are sequentially arranged in both the first zone and the second zone, and the first outgoing edge and the second outgoing edge are respectively bound in the corresponding zones through the corresponding first PIN PINs.

As a further improvement of the above scheme, first GND pins are distributed between the first section and the second section and are separated from each other by the first GND pins, and second GND pins are uniformly distributed on the sides of the first section and the second section, which are away from each other.

As a further improvement of the above scheme, the first outgoing line side and the second outgoing line side are both silver paste routing lines.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model discloses a guarantee touch-sensitive screen of whole screen data uniformity and homogeneity, bind into two sections through the FPC winding displacement and sensor function piece and bind, reasonable in design is compact, and integrate its long avris with TX drive layer circuit in the sensor function piece, RX response layer circuit distribution is on its two short avris, it merges after being qualified for the next round of competitions simultaneously and binds with FPC behind the root metal wire to link to each other to make RX response layer circuit both sides, the resistance of effectual reduction passageway, reasonable in design is compact, distribute evenly and can follow the product structure and improve the use accuracy of screen, not only back end hot pressing and test operation are simple, and can reduce the ITO impedance, improve product property ability, the actual impression of reinforcing use, in order to ensure whole screen data uniformity and homogeneity.

2. The utility model discloses a guarantee bi-polar wiring structure of touch-sensitive screen of whole screen data uniformity and homogeneity, solved the unilateral drawback of walking the line structural design and bringing of traditional GFF for the product yield is high and the better like product of performance also has great improvement, satisfies the scale production demand.

Drawings

FIG. 1 is a schematic diagram of a single-side routing design structure of a touch screen in the prior art;

fig. 2 is a schematic structural diagram of the touch screen provided by the present invention for ensuring the consistency and uniformity of the data of the whole screen;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is an enlarged view of the structure at B in FIG. 2;

FIG. 5 is a partial schematic structural view of the FPC cable of FIG. 2 after rotating ninety degrees clockwise;

fig. 6 is an enlarged schematic view of the structure at C in fig. 2.

Description of the main symbols:

1. a cover plate; 2. a sensor function sheet; 21. a TX drive layer line; 22. an RX sense layer line; 221. a first outgoing line edge; 222. a second outgoing line edge; 3. FPC cable arrangement; 31. a first PIN PIN; 32. a first GND pin; 33. a second GND pin; 34. a second PIN PIN; 35. and a third GND pin.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Please refer to fig. 2 to fig. 6, the touch screen with guaranteed data consistency and uniformity across the screen is suitable for a capacitive touch screen with a GFF structure below 10.1 inch. The flexible printed circuit board specifically comprises a Cover plate 1 (Cover Lens), an FPC (flexible printed circuit) cable 3 (flexible printed circuit), and a sensor functional sheet 2. The touch screen of the embodiment is a capacitance type TP touch screen with a G + F structure, which is a combination, and further comprises an IC (touch chip) and other auxiliary materials. The TP touch screen has the number of channels TX32 × RX21.

As shown in fig. 2 to 4, the sensor chip 2 is attached to the cover plate 1, and the sensor chip 2 has a TX driving layer wiring 21 and an RX sensing layer wiring 22. The TX driving layer wiring 21 is integrated on the long side of the sensor function chip 2 and is bonded to the FPC cable 3. The RX sense layer circuit 22 is integrated at the short side of the sensor function chip 2, and the RX sense layer circuit 22 has a first outgoing line side 221 and a second outgoing line side 222 at the two short sides respectively, and the first outgoing line side 221 and the second outgoing line side 222 are combined and bound to the FPC cable 3 after going out.

Specifically, the second wire-out edge 222 extends around the outer peripheral side of the sensor function chip 2 after wire-out to merge with the first wire-out edge 221 after wire-out. The FPC winding displacement 3 and the sensor functional sheet 2 are bound into two sections, and the design is reasonable and compact.

The sensor function piece 2 in this embodiment is a film sensor material, which has high impedance, and the two ends of the RX inductive layer circuit are converged into one wire and then bound with the FPC, so that the RX channel impedance is reduced to one half of the original impedance, and the channel impedance is reduced, thereby realizing the uniformity of the whole screen data.

It should be noted that the first line-out edge 221 and the second line-out edge 222 are wired in consideration of the phenomena of large far-end impedance and small near-end impedance, and the total length of the line-out edges of the RX channel needs to be ensured to be similar, otherwise the uniformity of the finished product is affected.

Referring to fig. 2 and 5, the fpc cable 3 has a bonding area, the bonding area is divided into a first area and a second area which are spaced apart from each other, the TX driving layer circuit 21 is bonded to the first area, and the RX sensing layer circuit 22 is bonded to the second area.

Two third GND PINs 35 are arranged in the first area, and a plurality of second PIN PINs 34 are sequentially arranged between the two third GND PINs 35. The second PIN 34 is in turn TX (TX 0, TX1, tx2.. TX 33) to be tied to each TX channel in TX drive layer line 21.

The second region is equally divided into a first section and a second section, the first outgoing-line edge 221 is bound to the first section, and the second outgoing-line edge 222 is bound to the second section.

A plurality of first PIN PINs 31 are sequentially arranged in each of the first interval and the second interval, and the first outgoing edge 221 and the second outgoing edge 222 are respectively bound in the corresponding intervals through the corresponding first PIN PINs 31. The first PIN PINs 31 in each interval are sequentially RX (RX 0, RX1, rx2.. RX 20) to be respectively bound and connected with each RX channel in the first outgoing line edge 221 and each RX channel in the second outgoing line edge 222.

Referring to fig. 2 and fig. 3, in the sensor functional chip 2 of the present embodiment, the line-out sequence of each RX channel in the first line-out edge 221 sequentially from left to right: RX (RX 20, RX19, RX18.. RX1, RX 0). The outgoing line sequence of each RX channel in the second outgoing side 222 is RX (RX 20, RX19, RX18.. RX1, RX 0) from left to right. First GND pins 32 are distributed between the first interval and the second interval and are separated from each other through the first GND pins 32, and second GND pins 33 are uniformly distributed on the separated sides of the first interval and the second interval.

Therefore, when the first wire outlet side 221 and the second wire outlet side 222 are simultaneously subjected to wire outlet, the two wires are combined into a metal wire, rx0 is connected with Rx0, rx1 is connected with Rx1, rx20 is connected with Rx20, a first GND pin 32 is arranged between the two portions of RX wires in a separated mode, each TX channel and each RX channel are finally bound and connected with the FPC flat cable 3, and the resistance value of the channels is effectively reduced.

The first line-outgoing edge 221 and the second line-outgoing edge 222 are both silver paste lines, so that smooth and stable channels can be ensured.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A touch screen for ensuring the consistency and uniformity of data across the screen, comprising:

a cover plate;

FPC cable arrangement; and

a sensor functional sheet attached to the cover plate, the sensor functional sheet having TX driving layer circuitry and RX sensing layer circuitry; the TX driving layer circuit is integrated on the long side of the sensor functional sheet and is bound on the FPC flat cable; the RX induction layer circuit is integrated on the short side of the sensor functional sheet, the RX induction layer circuit is respectively provided with a first wire outlet edge and a second wire outlet edge on the two short sides, and the first wire outlet edge and the second wire outlet edge are combined and bound on the FPC flat cable after being led out.

2. The touch screen for guaranteeing data consistency and uniformity of the whole screen as claimed in claim 1, wherein the second outgoing line edge extends around the outer peripheral side of the sensor functional sheet after being outgoing so as to be merged with the first outgoing line edge after being outgoing.

3. The touch screen of claim 1, wherein the FPC cable has a bonding area thereon, the bonding area is divided into a first area and a second area spaced apart from each other, the TX driving layer wire is bonded to the first area, and the RX sensing layer wire is bonded to the second area.

4. The touch screen for ensuring the consistency and the uniformity of the data of the whole screen according to claim 3, wherein two third GND PINs are arranged in the first area, and a plurality of second PIN PINs are sequentially arranged between the two third GND PINs.

5. The touch screen for guaranteeing data consistency and uniformity of the whole screen as claimed in claim 3 or 4, wherein the second area is equally divided into a first section and a second section, the first outgoing line edge is bound to the first section, and the second outgoing line edge is bound to the second section.

6. The touch screen capable of ensuring the consistency and the uniformity of the data of the whole screen as claimed in claim 5, wherein a plurality of first PIN PINs are sequentially arranged in each of the first interval and the second interval, and the first outgoing edge and the second outgoing edge are respectively bound in the corresponding intervals through the corresponding first PIN PINs.

7. The touch screen for ensuring the consistency and the uniformity of the data of the whole screen according to claim 6, wherein a first GND pin is arranged between the first interval and the second interval and is separated from each other by the first GND pin, and a second GND pin is arranged on the separated side of the first interval and the second interval.

8. The touch screen capable of ensuring the consistency and uniformity of data of the whole screen according to claim 1, wherein the first wire outlet edge and the second wire outlet edge are silver paste wires.