Display device with touch sensor, and electronic apparatus

Patent metadata

Field	Value
Publication number	US-10025422-B2
Application number	US-201615131227-A
Country	US
Kind code	B2
Filing date	Apr 18, 2016
Priority date	Aug 7, 2012
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

According to an aspect, a display device with a touch sensor has a display function and a touch sensor function. The display device includes: a panel unit that comprises a first substrate, a second substrate, and a display function layer between the first substrate and the second substrate; a first electrode on the first substrate; a second electrode on the second substrate; a third electrode on the second substrate; and a capacitor for the touch sensor function. The capacitor is formed between either of the first electrode and the second electrode and the third electrode, or between both the first electrode and the second electrode and the third electrode. The frame portion outside the display area comprises, on the first substrate side thereof, a peripheral circuit, and the second electrode is provided in a position more distant upward from the peripheral circuit than the first electrode.

First claim

The invention is claimed as follows:

1. A display device with a touch sensor, the display device comprising:
a panel unit that comprises a first substrate, a second substrate, and a display function layer between the first substrate and the second substrate;
a first touch drive electrode on the first substrate;
a second touch drive electrode on the second substrate; and
a touch detection electrode on the second substrate, the first touch drive electrode being overlapped by the touch detection electrode in a planar view,
wherein the first touch drive electrode of the first substrate is disposed in a display area of the panel unit, and the second touch drive electrode of the second substrate is disposed in a frame portion outside the display area, and
wherein the first touch drive electrode and the second touch drive electrode are supplied with a same potential.

2. The display device with a touch sensor according to claim 1 , wherein
the frame portion includes a first extended portion of the first touch drive electrode provided on the first substrate and includes the second touch drive electrode provided on the second substrate, and
the second touch drive electrode is extended further outward than the first extended portion of the first touch drive electrode in a planar view.

3. The display device with a touch sensor according to claim 1 , wherein
the second touch drive electrode comprises a second extended portion extended from the frame portion into the display area, and
the first touch drive electrode is overlapped at least by the second extended portion of the second touch drive electrode in a planar view.

4. The display device with a touch sensor according to claim 1 , wherein
the first substrate comprises a pixel electrode in a position between the first substrate and the second substrate for each pixel, and
the second touch drive electrode is disposed over the display area on the second substrate.

5. The display device with a touch sensor according to claim 1 , wherein
the display function layer is driven in a direction substantially parallel to an in-plane direction of the first substrate or the second substrate,
the first substrate comprises a pixel electrode for each pixel.

6. The display device with a touch sensor according to claim 1 , wherein
the touch detection electrode is disposed on a side opposite to a display function layer side of the second substrate and comprises a third extended portion extended from the display area to the frame portion,
the second touch drive electrode is disposed on a display function layer side of the second substrate, and
the second touch drive electrode is overlapped at least by the third extended portion of the touch detection electrode in a planar view.

7. The display device with a touch sensor according to claim 1 , wherein the first touch drive electrode and the second touch drive electrode are connected to each other by a conducting portion provided at the frame portion.

8. The display device with a touch sensor according to claim 1 , wherein the frame portion comprises, on the first substrate thereof, a peripheral circuit, and the second touch drive electrode is provided in a position more distant upward from the peripheral circuit than the first touch drive electrode.

9. A display device with a touch sensor, the display device comprising:
a panel unit that comprises a first substrate, a second substrate, and a display function layer between the first substrate and the second substrate;
a first touch drive electrode on the first substrate:
a second touch drive electrode on the second substrate; and
a touch detection electrode on the second substrate, the first touch drive electrode being overlapped by the touch detection electrode in a planar view,
wherein the second touch drive electrode of the second substrate is disposed in a display area of the panel unit and a frame portion outside the display area, and the first touch drive electrode and the second touch drive electrode are connected to each other by a conducting portion provided at the frame portion, and
wherein the frame portion comprises, on the first substrate thereof, a peripheral circuit, and the second touch drive electrode is provided in a position more distant upward from the peripheral circuit than the first touch drive electrode.

10. The display device with a touch sensor according to claim 9 , wherein
the frame portion includes a first extended portion of the first touch drive electrode provided on the first substrate and includes the second touch drive electrode provided on the second substrate, and
the second touch drive electrode is extended further outward than the first extended portion of the first touch drive electrode in a planar view.

11. The display device with a touch sensor according to claim 9 , wherein the first substrate comprises a pixel electrode in a position between the first substrate and the second substrate for each pixel.

12. The display device with a touch sensor according to claim 9 , wherein
the touch drive electrode is disposed on a side opposite to a display function layer side of the second substrate and comprises a third extended portion extended from the display area to the frame portion,
the second touch drive electrode is disposed on a display function layer side of the second substrate, and
the second touch drive electrode is overlapped at least by the third extended portion of the touch detection electrode in a planar view.

13. The display device with a touch sensor according to claim 9 , wherein
the touch detection electrode is disposed on a side opposite to a display function layer side of the second substrate and comprises a third extended portion extended from the display area to the frame portion,
the second touch drive electrode in the frame portion extends further outward than the third extended portion of the touch detection electrode.

Assignees

• Japan Display Inc

Inventors

• Kurasawa Hayato
• Hayashi Makoto
• Furutani Naosuke

Classifications

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G02F1/13338 Primary

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

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title