DISPLAY DEVICE

• US 20180004016A1
• Filed: 06/21/2017
• Published: 01/04/2018
• Est. Priority Date: 06/29/2016
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: TADA, Yusuke, AKIMOTO, Hajime
• Granted Patent: US 10,095,054 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/0009 Materials therefor
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133707 Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
• CPC Class Codes: G02F 1/361 Organic materials

Abstract

A display device includes: a first organic layer; display elements over the first organic layer in correspondence with the pixels; an inorganic layer sealing the display elements and the first organic layer; a second organic layer on a part of the inorganic layer; and a touch electrode on a surface of the inorganic layer and a surface of the second organic layer. The first organic layer has a rift in the peripheral area to surround the display area. The inorganic layer includes a concave part over the rift, and extends from the display area to the peripheral area continuously. The second organic layer is on the concave part of the inorganic layer. The surface of the second organic layer on which a touch electrode is put is contiguous to and is surrounded by the surface of the inorganic layer on the concave part.

Claims

1. A display device comprising:

a substrate that includes a display area on which a plurality of pixels are arranged in a matrix and a peripheral area that is around the display area;

a circuit layer that is on the substrate so as to include a wiring in the display area and include a terminal for an electrical connection to an outside in the peripheral area;

a first organic layer that is on the circuit layer in the display area and the peripheral area;

a plurality of display elements that are over the first organic layer respectively in correspondence with the plurality of the pixels in the display area;

an inorganic layer that seals the plurality of display elements and the first organic layer;

a second organic layer that is on a part of the inorganic layer; and

a touch electrode for touch sensing that is put on a surface of the inorganic layer and a surface of the second organic layer as a base respectively,

wherein the first organic layer has a rift in the peripheral area so as to surround the display area,

the inorganic layer includes a concave part over the rift, and extends from the display area to the peripheral area continuously,

the second organic layer is on the concave part of the inorganic layer, and

the surface of the second organic layer is contiguous to and is surrounded by the surface of the inorganic layer on the concave part.

2. The display device according to claim 1,

wherein the surface of the second organic layer is flush with the surface of the inorganic layer.

3. The display device according to claim 1,

wherein the plurality of display elements includes a plurality of pixel electrodes, a plurality of light emitting layers that are respectively laminated on the plurality of pixel electrodes, and an opposing electrode that is laminated on the plurality of light emitting layers,

the display device further including an insulating layer on respective peripheral parts of the plurality of pixel electrodes for preventing short circuiting of the plurality of pixel electrodes to the opposing electrode,

wherein the inorganic layer includes a second concave part over respective central parts of the plurality of pixel electrodes since there exists the insulating layer,

the second organic layer is also on the second concave part of the inorganic layer, and

the surface of the second organic layer is contiguous to and is surrounded by the surface of the inorganic layer also on the second concave part.

4. The display device according to claim 3,

wherein the surface of the second organic layer on the second concave part is flush with the surface of the inorganic layer.

5. The display device according to claim 3,

wherein the insulating layer is provided over the first organic layer also in the peripheral area so as to avoid the rift, the insulating layer having a second rift between the rift and the terminal,

the opposing electrode extends to the peripheral area and is electrically connected to the circuit layer at the second rift,

the inorganic layer forms a third concave part over the second rift,

the second organic layer is also on the third concave part of the inorganic layer, and

a surface of the second organic layer is contiguous to and is surrounded by the surface of the inorganic layer also on the third concave part.

6. The display device according to claim 5,

wherein the surface of the second organic layer on the third concave part is flush with the surface of the inorganic layer.