# US 11,443,873 B2 · Conductive film and manufacturing method thereof

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- Number: US 11,443,873 B2
- Document ID: US11443873B2
- Status: Granted
- Kind: B2
- Application number: 17/043,584
- Filed: 2019-04-11
- Published: 2021-01-28
- Granted: 2022-09-13
- Earliest claimed: 2018-05-29
- Assignees: Shine Optoelectronics (Kunshan) Co., Ltd.
- Applicants: Shine Optoelectronics (Kunshan) Co., Ltd.
- Inventors: Lidong Liu; Sheng Zhang; Guangzhou Yang; Shen Hong
- Web page: https://patentgrep.com/patent/US11443873B2

## CPC

- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- H01B 13/0026: {Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal}
- H01B 5/14: comprising conductive layers or films on insulating-supports
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
- G06F 2203/04112: Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})

## Abstract

Disclosed is an electrically-conductive film, comprising a support layer, an electrically-conductive area, a lead, and a bridging part. The support layer comprises a first side and a second side in an opposite arrangement. The support layer is recessively provided with a first groove and a second groove not in communication with each other. The first groove is filled with an electrically-conductive material to form an electrically-conductive area. The second groove is filled with an electrically-conductive material to form a lead. The bridging part is provided on the first side; the bridging part is electrically connected to the electrically-conductive area and to the lead. With the bridging part connected to the electrically-conductive area and to the lead, the connection is of increased reliability, and the electrical conductivity is increased. In addition, also disclosed is a preparation method for the electrically-conductive film.

## Claims

### Claim 1

A conductive film, comprising:
a carrier layer comprising a first side surface and a second side surface that are opposite to each other, wherein the first side surface of the carrier layer is recessed to form a first groove and a second groove that are not in communication with each other;
a conductive section formed by a conductive material filled in the first groove;
a lead formed by a conductive material filled in the second groove; and
a bridging portion arranged on the first side surface and configured to electrically connect the conductive section with the lead,
wherein the bridging portion itself is located in a same film layer, and
wherein the bridging portion is in electrical contact with the lead, and the bridging portion and the lead are located in different film layers,
wherein the conductive section comprises first grids connected to each other, the lead comprises second grids connected to each other, and the bridging portion electrically connects the first grids with the second grids,
wherein the conductive film comprises a plurality of conductive sections extending vertically and a plurality of conductive sections extending horizontally, the conductive section being one of the plurality of vertically extending sections or one of the plurality of horizontally extending sections; and
wherein each the plurality of conductive sections extending horizontally is disconnected at positions where the conductive section extending horizontally intersects the plurality of conductive sections extending vertically, and disconnected portions of each of the plurality of conductive sections extending horizontally are electrically connected to each other via a second bridging portion.

### Claim 2 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion is formed on the first side surface by silk screen printing, inkjet printing, sputtering or evaporation.

### Claim 3 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion comprises a bottom surface facing towards the first side surface, and the bottom surface is in a partial contact with the first side surface.

### Claim 4 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion and a corresponding conductive section are electrically connected through at least one of a point-to-point connection, a point-to-line connection, a point-to-surface connection, a line-to-line connection, a line-to-surface connection, or a surface-to-surface connection; and the bridging portion and a corresponding lead are electrically connected through at least one of a point-to-point connection, a point-to-line connection, a point-to-surface connection, a line-to-line connection, a line-to-surface connection, or a surface-to-surface connection.

### Claim 5 (depends on 1)

The conductive film according to claim 1, wherein a width of the first groove is greater than a width of the second groove; and/or, a depth of the second groove is greater than a depth of the first groove.

### Claim 6 (depends on 5)

The conductive film according to claim 5, wherein an opening of the first groove located on the first side surface has a greater width than a bottom of the first groove; and/or, an opening of the second groove located on the first side surface has a greater width than a bottom of the second groove.

### Claim 7 (depends on 6)

The conductive film according to claim 6, wherein the first groove comprises a first bottom wall and two first side walls respectively connecting two sides of the first bottom wall, and at least one of the first bottom wall and the two first side walls is an arcuate wall; and/or, the second groove comprises a second bottom wall and two second side walls respectively connecting two sides of the second bottom wall, and at least one of the second bottom wall and the two second side walls is an arcuate wall.

### Claim 8 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion comprises a plurality of connection points, and each of the plurality of connection points connects at least one grid line of one of the first grids with at least one grid line of one of the second grids.

### Claim 9 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion is linear, grid lines of the first grids extend to the bridging portion, and grid lines of second grids extend to the bridging portion.

### Claim 10 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion is block-shaped, and the block-shaped bridging portion partially covers grid lines of one of the first grids and partially covers grid lines of one of the second grids.

### Claim 11 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion comprises third grids, the third grids extend to the first grids and are in electrical contact with the first grids, and the third grids extend to the second grids and are in electrical contact with the second grids.

### Claim 12 (depends on 1)

The conductive film according to claim 1, wherein the bridging portion comprises a plurality of strip-shaped bridging parts, and each of the plurality of strip-shaped bridging parts has one end connected to one of the first grids and another end connected to one of the second grids.

### Claim 13 (depends on 1)

The conductive film according to claim 1, wherein the conductive section is one of a plurality of conductive sections of the conductive film that are not connected to each other, and each of the plurality of conductive sections is electrically connected to a corresponding the lead through a corresponding the bridging portion.