# US 11,307,706 B2 · FPC connector, touch-sensitive screen and display device

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- Number: US 11,307,706 B2
- Document ID: US11307706B2
- Status: Granted
- Kind: B2
- Application number: 17/107,959
- Filed: 2020-12-01
- Published: 2021-04-08
- Granted: 2022-04-19
- Earliest claimed: 2020-12-01
- Assignees: Shenzhen Startek Electronic Technology Co., Ltd.
- Applicants: Shenzhen Startek Electronic Technology Co., Ltd.
- Inventors: Dejun Zhu
- Web page: https://patentgrep.com/patent/US11307706B2

## CPC

- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- H05K 1/118: {specially for flexible printed circuits, e.g. using folded portions}
- G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing}
- G06F 1/189: {Power distribution}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 2203/04102: Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
- H05K 2201/09227: Layout details of a plurality of traces, e.g. escape layout for Ball Grid Array [BGA] mounting
- H05K 2201/2009: Reinforced areas, e.g. for a specific part of a flexible printed circuit
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An FPC connector includes a first insulating layer, a first circuit layer, a second insulating layer, a third insulating layer, and a second circuit layer. The first circuit layer is arranged between the first insulating layer and the second insulating layer. The first circuit layer includes a number of conductive strips. The third insulating layer is arranged between the first insulating layer and the first circuit layer. The second circuit layer includes a number of conductive strips provided on an upper side of the third insulating layer. Ends of the conductive strips of the second circuit layer pass through the third insulating layer and are correspondingly connected to the conductive strips of the first circuit layer. The first circuit layer and the second insulating layer each has a forepart extending beyond a front end of each of the first insulating layer, the third insulating layer, and the second circuit layer.

## Claims

### Claim 1

An FPC connector comprising:
a first insulating layer (1), a first circuit layer (2), a second insulating layer (3), a third insulating layer (5), and a second circuit layer (7);
wherein the first circuit layer (2) is arranged between the first insulating layer (1) and the second insulating layer (3), the first circuit layer (2) comprises a plurality of conductive strips; the third insulating layer (5) is arranged between the first insulating layer (1) and the first circuit layer (2), the second circuit layer (7) comprises a plurality of conductive strips that are provided on an upper side face of the third insulating layer (5);
ends of the plurality of conductive strips of the second circuit layer (7) pass through the third insulating layer (5) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2); the first circuit layer (2) and the second insulating layer (3) each has a forepart extending beyond a front end of each of the first insulating layer (1), the third insulating layer (5), and the second circuit layer (7).

### Claim 2 (depends on 1)

The FPC connector according to claim 1, wherein the third insulating layer (5) defines a plurality of vias (9), and the ends of the plurality of conductive strips of the second circuit layer (7) pass through the plurality of vias (9) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2).

### Claim 3 (depends on 1)

The FPC connector according to claim 1, wherein foreparts of the plurality of conductive strips of the first circuit layer (2) are arranged in parallel at equal pitches.

### Claim 4 (depends on 1)

The FPC connector according to claim 1, wherein a reinforcing plate (11) is provided at an underside of the second insulating layer (3), a metal layer (4) is disposed on an upper side surface of foreparts of the plurality of conductive strips of the first circuit layer (2) to constitute metal fingers, and the reinforcing plate (11) is positioned right below the metal fingers.

### Claim 5 (depends on 4)

The FPC connector according to claim 4, wherein the first insulating layer (1), the second circuit layer (7), the third insulating layer (5), the first circuit layer (2), the second insulating layer (3) and the reinforcing plate (11) are sequentially bonded to one another by thermosetting adhesive and hot pressing.

### Claim 6 (depends on 4)

The FPC connector according to claim 4, wherein the forepart of the first circuit layer (2), the forepart of the second insulating layer (3) and the reinforcing plate (11) extend beyond a front end of each of the first insulating layer (1), the third insulating layer (5), and the second circuit layer (7), and are equal in length and width and completely overlap one another.

### Claim 7

An FPC connector comprising:
a first insulating layer (1), a first circuit layer (2), a second insulating layer (3), a third insulating layer (5), a second circuit layer (7), and a reinforcing plate (11a);
wherein the first circuit layer (2) is arranged between the first insulating layer (1) and the second insulating layer (3), the first circuit layer (2) comprises a plurality of conductive strips; the third insulating layer (5) is arranged between the first insulating layer (1) and the first circuit layer (2), the second circuit layer (7) comprises a plurality of conductive strips that are provided on an upper side face of the third insulating layer (5);
ends of the plurality of conductive strips of the second circuit layer (7) pass through the third insulating layer (5) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2); the first circuit layer (2), the third insulating layer (5), and the first insulating layer (1) each has a forepart extending beyond a front end of the second insulating layer (3);
the reinforcing plate (11a) is arranged on an upper side face of the first insulating layer (1), a metal layer (4) is disposed on an under side surface of foreparts of the plurality of conductive strips of the first circuit layer (2) to constitute metal fingers, and the reinforcing plate (11a) is positioned right above the metal fingers.

### Claim 8 (depends on 7)

The FPC connector according to claim 7, wherein the third insulating layer (5) defines a plurality of vias (9), and the ends of the plurality of conductive strips of the second circuit layer (7) pass through the plurality of vias (9) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2).

### Claim 9 (depends on 7)

The FPC connector according to claim 7, wherein foreparts of the plurality of conductive strips of the first circuit layer (2) are arranged in parallel at equal pitches.

### Claim 10 (depends on 7)

The FPC connector according to claim 7, wherein the reinforcing plate (11a), the first insulating layer (1), the second circuit layer (7), the third insulating layer (5), the first circuit layer (2), the second insulating layer (3) are sequentially bonded to one another by thermosetting adhesive and hot pressing.

### Claim 11 (depends on 7)

The FPC connector according to claim 7, wherein the forepart of the first circuit layer (2), the forepart of the third insulating layer (5), the forepart of the first insulating layer (1), and the reinforcing plate (11a) extend beyond a front end of the second insulating layer (3), and are equal in length and width and completely overlap one another.

### Claim 12

A touch-sensitive screen comprising:
an FPC connector comprising:
a first insulating layer (1), a first circuit layer (2), a second insulating layer (3), a third insulating layer (5), and a second circuit layer (7);
wherein the first circuit layer (2) is arranged between the first insulating layer (1) and the second insulating layer (3), the first circuit layer (2) comprises a plurality of conductive strips; the third insulating layer (5) is arranged between the first insulating layer (1) and the first circuit layer (2), the second circuit layer (7) comprises a plurality of conductive strips that are provided on an upper side face of the third insulating layer (5);
ends of the plurality of conductive strips of the second circuit layer (7) pass through the third insulating layer (5) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2); the first circuit layer (2) and the second insulating layer (3) each has a forepart extending beyond a front end of each of the first insulating layer (1), the third insulating layer (5), and the second circuit layer (7).

### Claim 13 (depends on 12)

The touch-sensitive screen according to claim 12, wherein the third insulating layer (5) defines a plurality of vias (9), and the ends of the plurality of conductive strips of the second circuit layer (7) pass through the plurality of vias (9) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2).

### Claim 14 (depends on 12)

The touch-sensitive screen according to claim 12, wherein foreparts of the plurality of conductive strips of the first circuit layer (2) are arranged in parallel at equal pitches.

### Claim 15 (depends on 12)

The touch-sensitive screen according to claim 12, wherein a reinforcing plate (11) is provided at an underside of the second insulating layer (3), a metal layer (4) is disposed on an upper side surface of foreparts of the plurality of conductive strips of the first circuit layer (2) to constitute metal fingers, and the reinforcing plate (11) is positioned right below the metal fingers.

### Claim 16 (depends on 15)

The touch-sensitive screen according to claim 15, wherein the first insulating layer (1), the second circuit layer (7), the third insulating layer (5), the first circuit layer (2), the second insulating layer (3) and the reinforcing plate (11) are sequentially bonded to one another by thermosetting adhesive and hot pressing.

### Claim 17 (depends on 15)

The touch-sensitive screen according to claim 15, wherein the forepart of the first circuit layer (2), the forepart of the second insulating layer (3) and the reinforcing plate (11) extend beyond a front end of each of the first insulating layer (1), the third insulating layer (5), and the second circuit layer (7), and are equal in length and width and completely overlap one another.

### Claim 18

A touch-sensitive screen comprising:
an FPC connector comprising:
a first insulating layer (1), a first circuit layer (2), a second insulating layer (3), a third insulating layer (5), a second circuit layer (7), and a reinforcing plate (11a);
wherein the first circuit layer (2) is arranged between the first insulating layer (1) and the second insulating layer (3), the first circuit layer (2) comprises a plurality of conductive strips; the third insulating layer (5) is arranged between the first insulating layer (1) and the first circuit layer (2), the second circuit layer (7) comprises a plurality of conductive strips that are provided on an upper side face of the third insulating layer (5);
ends of the plurality of conductive strips of the second circuit layer (7) pass through the third insulating layer (5) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2); the first circuit layer (2), the third insulating layer (5), and the first insulating layer (1) each has a forepart extending beyond a front end of the second insulating layer (3);
the reinforcing plate (11a) is arranged on an upper side face of the first insulating layer (1), a metal layer (4) is disposed on an under side surface of foreparts of the plurality of conductive strips of the first circuit layer (2) to constitute metal fingers, and the reinforcing plate (11a) is positioned right above the metal fingers.

### Claim 19 (depends on 18)

The touch-sensitive screen according to claim 18, wherein the third insulating layer (5) defines a plurality of vias (9), and the ends of the plurality of conductive strips of the second circuit layer (7) pass through the plurality of vias (9) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2).

### Claim 20 (depends on 18)

The touch-sensitive screen according to claim 18, wherein foreparts of the plurality of conductive strips of the first circuit layer (2) are arranged in parallel at equal pitches.

### Claim 21 (depends on 18)

The touch-sensitive screen according to claim 18, wherein the reinforcing plate (11a), the first insulating layer (1), the second circuit layer (7), the third insulating layer (5), the first circuit layer (2), the second insulating layer (3) are sequentially bonded to one another by thermosetting adhesive and hot pressing.

### Claim 22 (depends on 18)

The touch-sensitive screen according to claim 18, wherein the forepart of the first circuit layer (2), the forepart of the third insulating layer (5), the forepart of the first insulating layer (1), and the reinforcing plate (11a) extend beyond a front end of the second insulating layer (3), and are equal in length and width and completely overlap one another.

### Claim 23

A display device comprising:
an FPC connector comprising:
a first insulating layer (1), a first circuit layer (2), a second insulating layer (3), a third insulating layer (5), and a second circuit layer (7);
wherein the first circuit layer (2) is arranged between the first insulating layer (1) and the second insulating layer (3), the first circuit layer (2) comprises a plurality of conductive strips; the third insulating layer (5) is arranged between the first insulating layer (1) and the first circuit layer (2), the second circuit layer (7) comprises a plurality of conductive strips that are provided on an upper side face of the third insulating layer (5);
ends of the plurality of conductive strips of the second circuit layer (7) pass through the third insulating layer (5) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2); the first circuit layer (2) and the second insulating layer (3) each has a forepart extending beyond a front end of each of the first insulating layer (1), the third insulating layer (5), and the second circuit layer (7).

### Claim 24 (depends on 23)

The display device according to claim 23, wherein the third insulating layer (5) defines a plurality of vias (9), and the ends of the plurality of conductive strips of the second circuit layer (7) pass through the plurality of vias (9) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2).

### Claim 25 (depends on 23)

The display device according to claim 23, wherein foreparts of the plurality of conductive strips of the first circuit layer (2) are arranged in parallel at equal pitches.

### Claim 26 (depends on 23)

The display device according to claim 23, wherein a reinforcing plate (11) is provided at an underside of the second insulating layer (3), a metal layer (4) is disposed on an upper side surface of foreparts of the plurality of conductive strips of the first circuit layer (2) to constitute metal fingers, and the reinforcing plate (11) is positioned right below the metal fingers.

### Claim 27 (depends on 26)

The display device according to claim 26, wherein the first insulating layer (1), the second circuit layer (7), the third insulating layer (5), the first circuit layer (2), the second insulating layer (3) and the reinforcing plate (11) are sequentially bonded to one another by thermosetting adhesive and hot pressing.

### Claim 28 (depends on 26)

The display device according to claim 26, wherein the forepart of the first circuit layer (2), the forepart of the second insulating layer (3) and the reinforcing plate (11) extend beyond a front end of each of the first insulating layer (1), the third insulating layer (5), and the second circuit layer (7), and are equal in length and width and completely overlap one another.

### Claim 29

A display device comprising:
an FPC connector comprising:
a first insulating layer (1), a first circuit layer (2), a second insulating layer (3), a third insulating layer (5), a second circuit layer (7), and a reinforcing plate (11a);
wherein the first circuit layer (2) is arranged between the first insulating layer (1) and the second insulating layer (3), the first circuit layer (2) comprises a plurality of conductive strips; the third insulating layer (5) is arranged between the first insulating layer (1) and the first circuit layer (2), the second circuit layer (7) comprises a plurality of conductive strips that are provided on an upper side face of the third insulating layer (5);
ends of the plurality of conductive strips of the second circuit layer (7) pass through the third insulating layer (5) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2); the first circuit layer (2), the third insulating layer (5), and the first insulating layer (1) each has a forepart extending beyond a front end of the second insulating layer (3);
the reinforcing plate (11a) is arranged on an upper side face of the first insulating layer (1), a metal layer (4) is disposed on an under side surface of foreparts of the plurality of conductive strips of the first circuit layer (2) to constitute metal fingers, and the reinforcing plate (11a) is positioned right above the metal fingers.

### Claim 30 (depends on 29)

The display device according to claim 29, wherein the third insulating layer (5) defines a plurality of vias (9), and the ends of the plurality of conductive strips of the second circuit layer (7) pass through the plurality of vias (9) and are correspondingly connected to the plurality of conductive strips of the first circuit layer (2).

### Claim 31 (depends on 29)

The display device according to claim 29, wherein foreparts of the plurality of conductive strips of the first circuit layer (2) are arranged in parallel at equal pitches.

### Claim 32 (depends on 29)

The display device according to claim 29, wherein the reinforcing plate (11a), the first insulating layer (1), the second circuit layer (7), the third insulating layer (5), the first circuit layer (2), the second insulating layer (3) are sequentially bonded to one another by thermosetting adhesive and hot pressing.

### Claim 33 (depends on 29)

The display device according to claim 29, wherein the forepart of the first circuit layer (2), the forepart of the third insulating layer (5), the forepart of the first insulating layer (1), and the reinforcing plate (11a) extend beyond a front end of the second insulating layer (3), and are equal in length and width and completely overlap one another.