Touch panel

Patent metadata

Field	Value
Publication number	US-9983701-B2
Application number	US-201414518154-A
Country	US
Kind code	B2
Filing date	Oct 20, 2014
Priority date	Oct 18, 2013
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

A touch panel includes a cover substrate and a substrate over the cover substrate. A first pad part is provided on one surface of the cover substrate and a second pad part is provided on one surface of the substrate. A first distance from an end of the cover substrate to the first pad part is longer than a second distance from the end of the cover substrate to an end of the substrate.

First claim

What is claimed is:

1. A capacitive type touch panel comprising:
a cover substrate including a first surface and a second surface opposite to the first surface;
a plurality of first pad parts on the first surface of the cover substrate;
a substrate on the first surface of the cover substrate and including a third surface that faces the cover substrate and a fourth surface opposite to the third surface;
a printed circuit board provided on the substrate;
a plurality of second pad parts on a surface of the substrate; and
an adhesive layer between the cover substrate and the substrate,
wherein a first distance from an end of the cover substrate to the first pad part is longer than a second distance from the end of the cover substrate to an end of the substrate,
wherein a first hole is formed in the adhesive layer, a second hole is formed in the substrate,
wherein each of the plurality of first pad parts is connected to each of a plurality of first sensing electrodes through each of a plurality of first wire electrodes,
wherein each of the plurality of second pad parts is connected to each of a plurality of second sensing electrodes through each of a plurality of second wire electrodes,
wherein the plurality of first pad parts and the plurality of second pad parts are not overlapped with each other,
wherein the first hole, the second hole, and the plurality of first pad parts are formed at positions corresponding to each other,
wherein an inner area of the first hole and the second hole accommodates the first pad parts,
wherein a total width of the first hole is a same size as a total width of the second hole,
wherein the first sensing electrodes, the first wire electrodes, and the plurality of first pad parts are provided on the first surface of the cover substrate,
wherein the second sensing electrode, the second wire electrode, the plurality of second pad parts, and the printed circuit board are provided on the fourth surface of the substrate, and
wherein the printed circuit board includes:
a plurality of first connecting parts, each of the plurality of first connecting parts facing and being electrically connected to each of the plurality of first pad parts through the first hole and the second hole at the inner area of the first hole and the second hole; and
a plurality of second connecting parts, wherein each of the plurality of second connecting parts facing and being electrically connected to each of the plurality of second pad parts at an area outside of the first hole and the second hole.

2. The capacitive type touch panel of claim 1 , wherein the second distance is equal to or less than about 200 μm.

3. The capacitive type touch panel of claim 1 , wherein the adhesive layer is provided at a position corresponding to the substrate.

4. The capacitive type touch panel of claim 1 , wherein the plurality of first pad parts are exposed through the first hole and the second hole.

5. The capacitive type touch panel of claim 1 , wherein the printed circuit board is connected to the plurality of second pad parts disposed on the fourth surface of the substrate and the plurality of first pad parts exposed through the first and second holes.

6. The capacitive type touch panel of claim 1 , an edge surface of the cover substrate is placed on a same plane as an edge surface of the substrate.

7. The capacitive type touch panel of claim 1 , wherein a total surface area of the first hole and a total surface area of the second hole are each larger than a total surface area of the plurality of first pad parts, and wherein the total surface area of the first hole is the same as the total surface area of the second hole.

8. The capacitive type touch panel of claim 7 , wherein the first hole and the second hole have a rectangular shape.

9. The capacitive type touch panel of claim 1 , wherein the plurality of second pad parts is provided adjacent to the second hole on the fourth surface of the substrate.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Jin Bok

Classifications

• H05K1/118

  specially for flexible printed circuits, e.g. using folded portions · CPC title

• H05K1/117

  Pads along the edge of rigid circuit boards, e.g. for pluggable connectors · CPC title

• H05K2201/10128

  Display · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title