# US 2013/0154719 A1 · Connection structure between substrate and fpcb for touch panel

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- Number: US 2013/0154719 A1
- Document ID: US20130154719A1
- Status: Published application
- Kind: A1
- Application number: 13/713,968
- Filed: 2012-12-13
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Seung Min Lee; Young Jae Kim; Ha Yoon Song; Ho Joon Park
- Web page: https://patentgrep.com/patent/US20130154719A1

## CPC

- G06F 3/04164: {Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads}
- H03K 17/9618: {using a plurality of detectors, e.g. keyboard}
- G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F 2203/04103: Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
- 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

Disclosed herein is a connection structure between a substrate and a flexible printed circuit board (FPCB) for a touch panel, including: a substrate; first sensing electrodes; second sensing electrodes; first electrode wirings; second electrode wirings; and a flexible printed circuit board connected to the substrate so as to be electrically connected to the first and second electrode wirings, wherein a first connection portion of the first electrode wiring and a second connection portion of the second electrode wiring to which the flexible printed circuit board is electrically connected are formed on the upper and lower surfaces of the substrate, respectively, so as to face each other in a vertical direction. Therefore, the flexible printed circuit substrate may be connected to the substrate by a single assembling process.

## Claims

### Claim 1

A connection structure between a substrate and a flexible printed circuit board (FPCB) for a touch panel, comprising:
a substrate;
first sensing electrodes formed on an upper surface of the substrate;
second sensing electrodes formed on a lower surface of the substrate;
first electrode wirings formed on the upper surface of the substrate while being electrically connected to the first sensing electrodes;
second electrode wirings formed on the lower surface of the substrate while being electrically connected to the second sensing electrodes; and
a flexible printed circuit board connected to the substrate so as to be electrically connected to the first and second electrode wirings,
wherein a first connection portion of the first electrode wiring and a second connection portion of the second electrode wiring to which the flexible printed circuit board is electrically connected are formed on the upper and lower surfaces of the substrate, respectively, so as to face each other in a vertical direction.

### Claim 2 (depends on 1)

The connection structure as set forth in claim 1, wherein the first and second connection portions are formed on upper and lower surfaces of a distal end portion of the substrate, respectively.

### Claim 3 (depends on 1)

The connection structure as set forth in claim 1, wherein the flexible printed circuit board includes:
a body part; and
first and second connection parts extended integrally with each other from the body part and electrically connected to the first and second connection portions, respectively.

### Claim 4 (depends on 3)

The connection structure as set forth in claim 3, wherein the flexible printed circuit board includes:
an insulating part enclosing the outermost side; and
first and second conductive parts formed in the insulating part and electrically connected to the first and second connection portions, respectively.

### Claim 5 (depends on 4)

The connection structure as set forth in claim 4, wherein the flexible printed circuit board further includes:
a first adhesive pad formed at an end portion of the first conductive part and adhered to a portion of the substrate at which the first connection portion is formed while being electrically connected to the first connection portion; and
a second adhesive pad formed at an end portion of the second conductive part and adhered to a portion of the substrate at which the second connection portion is formed while being electrically connected to the second connection portion.

### Claim 6 (depends on 3)

The connection structure as set forth in claim 3, further comprising:
a first depression part having the first connection portion formed thereon and depressed from the upper surface of the substrate in a thickness direction; and
a second depression part having the second connection portion formed thereon and depressed from the lower surface of the substrate in the thickness direction.

### Claim 7 (depends on 6)

The connection structure as set forth in claim 6, wherein the first and second connection parts have widths corresponding to widths between both sidewalls of each of the first and second depression parts.