# US 2014/0190808 A1 · Bridging structure for signal transmission of touch panel

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- Number: US 2014/0190808 A1
- Document ID: US20140190808A1
- Status: Published application
- Kind: A1
- Application number: 13/737,965
- Filed: 2013-01-10
- Published: 2014-07-10
- Earliest claimed: 2013-01-10
- Assignees: Young Fast Optoelectronics Co., Ltd.
- Inventors: Kai-Ti YANG; Hsing-Ming CHANG
- Web page: https://patentgrep.com/patent/US20140190808A1

## CPC

- G06F 3/044: by capacitive means
- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- G06F 3/0443: {using a single layer of sensing electrodes}
- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G06F 3/0448: {Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality}
- H03K 17/9618: {using a plurality of detectors, e.g. keyboard}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M)

## Abstract

The invention includes a substrate with a visible area and a shielded area, a touch panel overlapped on the substrate and having touch sensor units overlapping with the visible area and a bridging layer with an insulating film. The touch sensor units are connected with signal wires to electric contacts corresponding to the shielded area. The insulating film cloaks the signal wires and electric contacts. The insulating film is formed with through holes corresponding to the electric contacts and is provided with bridging wires between every two adjacent through holes for connecting all of the electric contacts.

## Claims

### Claim 1

A bridging structure for signal transmission of a touch panel, comprising:
a transparent substrate, provided with an insulating colored periphery so as to be defined as a central visible area and a surrounding shielded area;
a transparent touch panel, overlapped on the transparent substrate, and having a plurality of touch sensor units overlapping with the visible area, wherein each of the touch sensor units is connected with a first signal wire to a first electric contact located on the touch panel and overlapping with the shielded area, the touch panel is further provided with second electric contacts and third electric contacts, which are connected with second signal wires and overlap with the shielded area;
a bridging layer, having an insulating film cloaking the first electric contacts and the second electric contacts, wherein the insulating film is formed with through holes corresponding to the first and second electric contacts and is provided with bridging wires separately between every two adjacent ones of the through holes on the same axis for separately connecting the first electric contacts to the second electric contacts on the same axis; and
a flexible flat cable, having a flexible base sheet with a plurality of fourth electric contacts corresponding to the third electric contacts;
wherein the second electric contacts separately electrically connect with third signal wires, the flexible flat cable is attached to an edge of the shielded area to correspondingly coupling the fourth electric contacts and the third electric contacts.

### Claim 2 (depends on 1)

The bridging structure of claim 1, wherein the first and second electric contacts are located at two opposite sides of a bundle of the first signal wires.

### Claim 3 (depends on 1)

The bridging structure of claim 1, wherein the bridging wires are parallel.