Touch panel substrate, electronic device, and production method for electronic device

Patent metadata

Field	Value
Publication number	US-2016018929-A1
Application number	US-201314442664-A
Country	US
Kind code	A1
Filing date	Nov 14, 2013
Priority date	Nov 14, 2012
Publication date	Jan 21, 2016
Grant date	—

Abstract

The present invention provides a touch panel substrate that allows for greater design freedom when designing conductive wire patterns for reducing occurrence of the moiré effect. The touch panel substrate includes: a first electrode layer that includes first conductive wires and second conductive wires; and a second electrode layer that includes third conductive wires and fourth conductive wires. When viewed in a plan view, the first conductive wires and the third conductive wires form first quadrilaterals, and the second conductive wires and the fourth conductive wire form second quadrilaterals. The first quadrilaterals and the second quadrilaterals are not identical to one another.

First claim

1 . A touch panel substrate, comprising:
a first electrode layer and a second electrode layer, wherein the first electrode layer includes a plurality of mutually parallel first conductive wires and a plurality of mutually parallel second conductive wires that intersect with the first conductive wires, wherein the second electrode layer includes a plurality of mutually parallel third conductive wires and a plurality of mutually parallel fourth conductive wires that intersect with the third conductive wires, wherein an angle between the first conductive wires and the second conductive wires is not equal to 90°, and the first conductive wires and second conductive wires form a lattice pattern that includes a plurality of parallelograms in which in each parallelogram, adjacent sides have different lengths, wherein an angle between the third conductive wires and the fourth conductive wires is not equal to 90°, and the third conductive wires and fourth conductive wires form a lattice pattern that includes a plurality of parallelograms in which in each parallelogram, adjacent sides have different lengths, wherein the first electrode layer and the second electrode layer being overlaid in a plan view causes the adjacent first conductive wires and adjacent third conductive wires to define a plurality of first quadrilaterals, and the adjacent second conductive wires and adjacent fourth conductive wires to define a plurality of second quadrilaterals, and wherein the first quadrilaterals and the second quadrilaterals are not identical.

2 . The touch panel substrate according to claim 1 , wherein the first quadrilaterals and the second quadrilaterals are square-shaped.

3 . The touch panel substrate according to claim 1 ,
wherein the first electrode layer includes a plurality of first sensor electrodes that are insulated from one another, and the second electrode layer includes a plurality of second sensor electrodes that are insulated from one another, wherein the first sensor electrodes are formed by severing the first conductive wires and the second conductive wires to divide a conductive wire pattern formed by the first conductive wires and the second conductive wires into a plurality of regions, and wherein the second sensor electrodes are formed by severing the third conductive wires and the fourth conductive wires to divide a conductive wire pattern formed by the third conductive wires and the fourth conductive wires into a plurality of regions.

4 . An electronic device, comprising:
the touch panel substrate according to claim 1 ; and a display device, wherein a display surface of the display device includes a plurality of pixels arranged in a matrix pattern, and wherein a diagonal length of the first quadrilaterals and a diagonal length of the second quadrilaterals are no more than four times a gap between adjacent pixels.

5 . A method of manufacturing an electronic device, comprising:
forming a first electrode layer; and forming a second electrode layer over the first electrode layer, wherein the first electrode layer includes a plurality of mutually parallel first conductive wires and a plurality of mutually parallel second conductive wires that intersect with the first conductive wires, wherein the second electrode layer includes a plurality of mutually parallel third conductive wires and a plurality of mutually parallel fourth conductive wires that intersect with the third conductive wires, wherein an angle between the first conductive wires and the second conductive wires is not equal to 90°, and the first conductive wires and second conductive wires form a lattice pattern that includes a plurality of parallelograms in which in each parallelogram, adjacent sides have different lengths, wherein an angle between the third conductive wires and the fourth conductive wires is not equal to 90°, and the third conductive wires and fourth conductive wires form a lattice pattern that includes a plurality of parallelograms in which in each parallelogram, adjacent sides have different lengths, wherein the first electrode layer and the second electrode layer being overlaid in a plan view causes the adjacent first conductive wires and adjacent third conductive wires to define a plurality of first quadrilaterals, and the adjacent second conductive wires and adjacent fourth conductive wires to define a plurality of second quadrilaterals, and wherein the first quadrilaterals and the second quadrilaterals are not identical.

6 . The touch panel substrate according to claim 2 ,
wherein the first electrode layer includes a plurality of first sensor electrodes that are insulated from one another, and the second electrode layer includes a plurality of second sensor electrodes that are insulated from one another, wherein the first sensor electrodes are formed by severing the first conductive wires and the second conductive wires to divide a conductive wire pattern formed by the first conductive wires and the second conductive wires into a plurality of regions, and wherein the second sensor electrodes are formed by severing the third conductive wires and the fourth conductive wires to divide a conductive wire pattern formed by the third conductive wires and the fourth conductive wires into a plurality of regions.

7 . An electronic device, comprising:
the touch panel substrate according to claim 2 ; and a display device, wherein a display surface of the display device includes a plurality of pixels arranged in a matrix pattern, and wherein a diagonal length of the first quadrilaterals and a diagonal length of the second quadrilaterals are no more than four times a gap between adjacent pixels.

8 . An electronic device, comprising:
the touch panel substrate according to claim 3 ; and a display device, wherein a display surface of the display device includes a plurality of pixels arranged in a matrix pattern, and wherein a diagonal length of the first quadrilaterals and a diagonal length of the second quadrilaterals are no more than four times a gap between adjacent pixels.

9 . An electronic device, comprising:
the touch panel substrate according to claim 6 ; and a display device, wherein a display surface of the display device includes a plurality of pixels arranged in a matrix pattern, and wherein a diagonal length of the first quadrilaterals and a diagonal length of the second quadrilaterals are no more than four times a gap between adjacent pixels.

Assignees

• Sharp Kk

Inventors

• Kida Kazutoshi
• Matsumoto Shinji

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/047 Primary

  using sets of wires, e.g. crossed wires · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title