# US 7,609,252 B2 · Touch panel

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- Number: US 7,609,252 B2
- Document ID: US7609252B2
- Status: Granted
- Kind: B2
- Application number: 11/212,994
- Filed: 2005-08-26
- Published: 2006-03-02
- Granted: 2009-10-27
- Earliest claimed: 2004-08-31
- Assignees: Shoei Co., Ltd.
- Inventors: Satoru Horikawa; Yuzuru Fujita
- Web page: https://patentgrep.com/patent/US7609252B2

## CPC

- G06F 3/045: using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

In a touch panel, upper and lower electrode connecting portions are provided in the vicinity of a sealing agent formed above extending electrodes, and the upper and lower electrode connecting portions are connected so as to overlap each other. Accordingly, a gap between a height of the overlap of the upper and lower electrode connecting portions and a height of the sealing agent is relaxed. In this way, it is possible to reduce occurrence of cracks on the touch panel upon pressurizing upper and lower substrates.

## Claims

### Claim 1

A touch panel comprising:
an upper substrate including a transparent conductive film and an upper position detection electrode on a surface thereof, the upper position detection electrode having an upper electrode connecting portion; and
a lower substrate including a transparent conductive film, a lower position detection electrode, and an extending electrode on a surface thereof, the extending electrode having a lower electrode connecting portion,
the upper substrate and the lower substrate being bonded together, with a sealing agent interposed therebetween, wherein:
the transparent conductive film of the upper substrate and the transparent conductive film of the lower substrate face each other,
the lower electrode connecting portion has a concave shape and has a conductive adhesive applied thereto such that the lower connecting portion overlaps and is electrically connected to the upper electrode connecting portion,
the upper and lower electrode connecting portions are in a vicinity of a portion of the extending electrode where the sealing agent is disposed, and
a combined height of the upper and lower electrode connecting portions is more than a combined height of the extending electrode and overlapping sealing agent.

### Claim 2 (depends on 1)

The touch panel according to claim 1, wherein a formation width of the upper position detection electrode of the upper substrate is substantially equal to a formation width of the extending electrode of the lower substrate including the concave shape lower electrode connecting portion.

### Claim 3 (depends on 1)

The touch panel according to claim 1, wherein the extending electrode is located substantially in the center of the lower substrate.

### Claim 4 (depends on 1)

The touch panel according to claim 1, wherein a grain size of filler contained in a material of the extending electrode is greater than a grain size of filler contained in the sealing agent.