Touch panel

Patent metadata

Field	Value
Publication number	US-2016349558-A1
Application number	US-201615155095-A
Country	US
Kind code	A1
Filing date	May 16, 2016
Priority date	May 27, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

To provide a thin touch panel, a touch panel having a simple structure, a touch panel which can be easily incorporated into an electronic device, or a touch panel with a small number of components. The touch panel includes pixel electrodes arranged in a matrix, a plurality of signal lines, a plurality of scan lines, a plurality of first wirings extending in a direction parallel to the signal lines, and a plurality of second wirings extending in a direction parallel to the scan line. Part of the first wiring and part of the second wiring function as a pair of electrodes included in a touch sensor. The first wiring and the second wiring each have a stripe shape or form a mesh shape and are each provided between two adjacent pixel electrodes in a plan view.

First claim

What is claimed is:

1 . A touch panel comprising:
a display portion comprising pixel electrodes arranged in a matrix along a first direction and a second direction intersecting the first direction in a plan view; a signal line extending in the first direction; a scan line extending in the second direction; a first wiring extending in the first direction; and a second wiring extending in the second direction, wherein the first wiring comprises a first portion parallel to the signal line and between two of the pixel electrodes adjacent in the second direction, and wherein the second wiring comprises a second portion parallel to the scan line and between two of the pixel electrodes adjacent in the first direction.

2 . The touch panel according to claim 1 ,
wherein the first wiring does not intersect the signal line in a region overlapping with the display portion, and wherein the second wiring does not intersect the scan line in a region overlapping with the display portion.

3 . The touch panel according to claim 1 ,
wherein the first wiring and the signal line are formed of a first conductive film, and wherein the second wiring and the scan line are formed of a second conductive film.

4 . The touch panel according to claim 1 ,
wherein the second wiring comprises a third portion and a fourth portion, wherein the fourth portion intersects at least one of the signal line and the first wiring, wherein the first wiring, the signal line, and the third portion are formed of a first conductive film, and wherein the fourth portion and the scan line are formed of a second conductive film.

5 . The touch panel according to claim 1 ,
wherein the first wiring comprises a fifth portion and a sixth portion, wherein the fifth portion intersects at least one of the scan line and the second wiring, wherein the fifth portion and the signal line are formed of a first conductive film, and wherein the second wiring, the scan line, and the sixth portion are formed of a second conductive film.

6 . The touch panel according to claim 1 , further comprising a liquid crystal element, wherein the liquid crystal element comprises one of the pixel electrodes, a liquid crystal, and a common electrode.

7 . The touch panel according to claim 6 , further comprising:
a first substrate; a second substrate; a first polarizing plate; a second polarizing plate; and a backlight, wherein the backlight, the first polarizing plate, the first substrate, the second substrate, and the second polarizing plate are stacked in this order, and wherein the signal line, the scan line, the first wiring, the second wiring, and the pixel electrodes are between the first substrate and the second substrate.

8 . The touch panel according to claim 1 , further comprising a light-emitting element, wherein the light-emitting element comprises one of the pixel electrodes, an EL layer, and a common electrode.

9 . The touch panel according to claim 8 , further comprising:
a first substrate; a second substrate; and a polarizing plate, wherein the polarizing plate, the first substrate, and the second substrate are stacked in this order, and wherein the signal line, the scan line, the first wiring, the second wiring, and the pixel electrodes are between the first substrate and the second substrate.

10 . A touch panel comprising:
pixel electrodes arranged in a matrix along a first direction and a second direction intersecting the first direction in a plan view; a signal line extending in the first direction; a scan line extending in the second direction; a first wiring extending in the first direction; and a second wiring extending in the second direction, wherein the first wiring comprises a first portion and a second portion, wherein the first portion is parallel to the signal line and between two of the pixel electrodes adjacent in the second direction, wherein the second portion intersects the signal line, and is parallel to the scan line and between two of the pixel electrodes adjacent in the first direction, wherein the second wiring comprises a third portion and a fourth portion, wherein the third portion is parallel to the scan line and between another two of the pixel electrodes adjacent in the first direction, and wherein the fourth portion intersects the scan line, and is parallel to the signal line and between another two of the pixel electrodes adjacent in the second direction.

11 . The touch panel according to claim 10 , wherein the first wiring has a mesh shape surrounding at least one of the pixel electrodes.

12 . The touch panel according to claim 10 , wherein the second wiring has a mesh shape surrounding at least one of the pixel electrodes.

13 . The touch panel according to claim 10 ,
wherein the first portion, the fourth portion, and the signal line are formed of a first conductive film, and wherein the second portion, the third portion, and the scan line are formed of a second conductive film.

14 . The touch panel according to claim 10 , further comprising a liquid crystal element, wherein the liquid crystal element comprises one of the pixel electrodes, a liquid crystal, and a common electrode.

15 . The touch panel according to claim 14 , further comprising:
a first substrate; a second substrate; a first polarizing plate; a second polarizing plate; and a backlight, wherein the backlight, the first polarizing plate, the first substrate, the second substrate, and the second polarizing plate are stacked in this order, and wherein the signal line, the scan line, the first wiring, the second wiring, and the pixel electrodes are between the first substrate and the second substrate.

16 . The touch panel according to claim 10 , further comprising a light-emitting element, wherein the light-emitting element comprises one of the pixel electrodes, an EL layer, and a common electrode.

17 . The touch panel according to claim 16 , further comprising:
a first substrate; a second substrate; and a polarizing plate, wherein the polarizing plate, the first substrate, and the second substrate are stacked in this order, and wherein the signal line, the scan line, the first wiring, the second wiring, and the pixel electrodes are between the first substrate and the second substrate.

Assignees

• Semiconductor Energy Lab

Inventors

• Shishido Hideaki
• Kubota Daisuke
• Kubota Yusuke

Classifications

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F2203/04103

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

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K50/10

  OLEDs or polymer light-emitting diodes [PLED] · CPC title