TOUCH PANEL

• US 20120098779A1
• Filed: 06/28/2010
• Published: 04/26/2012
• Est. Priority Date: 07/01/2009
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Nakanishi, Akira, Yamaue, Nobuhiro, Fukui, Toshiharu
• Granted Patent: US 8,803,830 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A touch panel according to the present invention includes a first substrate having a first conductive layer on one surface; a second substrate having a second conductive layer on a surface on a side facing the first conductive layer; a plurality of first electrodes extending from the first conductive layer; and a plurality of second electrodes extending from the second conductive layer. The first conductive layer is formed of a plurality of parallel strips; and the plurality of first electrodes are formed of a straight portion extending in a predetermined direction, and an inclined portion coupled to the straight portion by being inclined by a predetermined angle with respect to a direction orthogonal to the straight portion. According to the configuration, fading, thickness variation and the like at the time of printing can be prevented and fine patterning can be easily carried out, so that an inexpensive touch panel in which the entire miniaturization is achieved can be obtained.

Claims

1. A touch panel comprising:

a first substrate having a first conductive layer on one surface;

a second substrate having a second conductive layer on a surface on a side facing the first conductive layer;

a plurality of first electrodes extending from the first conductive layer; and

a plurality of second electrodes extending from the second conductive layer;

wherein

the first conductive layer is formed of a plurality of parallel strips; and

the plurality of first electrodes are each formed of,

a first straight portion extending in a predetermined direction, and

a first inclined portion coupled to the straight portion by being inclined by a predetermined angle with respect to a direction orthogonal to the straight portion, and

at least one of the first inclined portions is formed of the first conductive layer.

2. The touch panel according to claim 1, wherein

the second conductive layer is formed of a plurality of parallel strips;

and

the plurality of second electrodes are each formed of,

a second straight portion extending in a predetermined direction, and

a second inclined portion coupled to the second straight portion by being inclined by a predetermined angle with respect to a direction orthogonal to the straight portion.

3. The touch panel according to claim 1, wherein the predetermined angle is from 15 degrees to 75 degrees.

4. The touch panel according to claim 2, wherein the second conductive layer is formed to be orthogonal to the first conductive layer.

5. The touch panel according to claim 1, wherein the first straight portion is extended in a direction parallel to the first conductive layer.

6. The touch panel according to claim 2, wherein the second straight portion is extended in a direction orthogonal to the second conductive layer.

8. The touch panel according to claim 2, wherein at least one of the second inclined portions is formed of the second conductive layer.

7. (canceled)