Display device

Patent metadata

Field	Value
Publication number	US-2017207276-A1
Application number	US-201615336026-A
Country	US
Kind code	A1
Filing date	Oct 27, 2016
Priority date	Jan 15, 2016
Publication date	Jul 20, 2017
Grant date	—

Abstract

A sealing member containing conductive particles and disposed in a seal region is formed between a display panel and a touch panel. A laminated structure formed on the display panel includes a first detection lines. The first detection lines extend from the seal region to a connection region and are connected through the conductive particles to terminals of second detection lines formed on the touch panel. A peripheral edge of the organic barrier is located inward from the conductive particles of the sealing member. The above described structure can facilitate a work for connecting external lines such as FPC to the display panel and the touch panel. Further, the structure can secure stability of electrical connection between the external lines and the touch panel.

First claim

What is claimed is:

1 . A display device comprising:
a display panel including a display region; a touch panel facing the display panel; a seal region located outside the display region and surrounding the display region; and a connection region located outside a portion of a peripheral edge of the seal region, wherein the display panel includes a first substrate and a first laminated structure formed on a surface of the first substrate facing the touch panel, the touch panel includes a second substrate and a second laminated structure formed on a surface of the second substrate facing the display panel, the first laminated structure includes:
an organic layer including a light emitting layer and formed on the display region; and
a multilayer barrier covering the whole of the organic layer and including a first inorganic barrier layer that includes an inorganic material, an organic barrier layer that includes an organic material and is formed on the first inorganic barrier layer, and a second inorganic barrier layer that includes an inorganic material and covers the whole of the organic barrier layer,
the second laminated structure includes a circuit layer including a detection electrode and a second detection line that extends from the detection electrode and includes a terminal in the seal region, a sealing member is located in the seal region and disposed between the display panel and the touch panel, the sealing member containing a conductive particle, the first laminated structure includes a first detection line extending from the seal region to the connection region and electrically connected to the terminal of the second detection line through the conductive particle, and the organic barrier layer includes a peripheral edge located inward from the conductive particle.

2 . The display device according to claim 1 , wherein
the seal region includes an inner edge in a position in which the conductive particle is disposed, and the peripheral edge of the organic barrier layer is located inward from the inner edge of the seal region.

3 . The display device according to claim 1 , wherein
at least one of the first inorganic barrier layer and the second inorganic barrier layer includes a portion located in the seal region, and in the seal region, the first detection line is formed on the upper side of the portion of the at least one of the first inorganic barrier layer and the second inorganic barrier layer.

4 . The display device according to claim 1 , wherein
both of the first inorganic barrier layer and the second inorganic barrier layer include portions located in the seal region, and in the seal region, the first detection line is formed on the portions of the first inorganic barrier layer and the second inorganic barrier layer.

5 . The display device according to claim 1 , wherein
the first substrate has flexibility, and the connection region of the display panel is folded opposite to the touch panel.

6 . The display device according to claim 1 , wherein
the display panel includes a portion located in the seal region, and a spacer is disposed opposite to the conductive particle across the portion of the display panel.

7 . The display device according to claim 1 , wherein
the first laminated structure includes:
a lower electrode formed in each of a plurality of pixels and supplying electric current to the organic layer;
a circuit layer having a circuit that is configured to control the electric current to be supplied to the lower electrode; and
a plurality of first terminals located in the connection region and connected to the circuit formed in the circuit layer,
the circuit layer includes a portion located in the connection region, and the first laminated structure includes an insulating layer that covers the circuit layer and is formed between the portion of the circuit layer and the first detection line.

8 . The display device according to claim 7 , wherein
the first laminated structure includes a bank layer located between two adjacent pixels and disposed on a periphery of the lower electrode, the bank layer being employed as the insulating layer.

9 . The display device according to claim 8 , wherein
at least one of the first inorganic barrier layer and the second inorganic barrier layer includes a portion located in the seal region and formed on the insulating layer.

10 . The display device according to claim 1 , wherein
the first laminated structure includes:
a lower electrode formed in each of a plurality of pixels and supplying electric current to the organic layer;
a circuit layer having a circuit that is configured to control the electric current to be supplied to the lower electrode;
a plurality of first terminals located in the connection region and connected to the circuit formed in the circuit layer; and
a second terminal located in the connection region and formed in the same layer as the plurality of first terminals, and
the first detection line is connected to the second terminal.

11 . The display device according to claim 1 , wherein
the first laminated structure includes:
a lower electrode formed in each of a plurality of pixels and supplying electric current to the organic layer;
a circuit layer having a circuit that is configured to control the electric current to be supplied to the lower electrode;
a plurality of first terminals located in the connection region and connected to the circuit formed in the circuit layer; and
a second terminal located in the connection region, and
both of the first detection line and the second terminal are formed on the upper sides of the first inorganic barrier layer and the second inorganic barrier layer.

12 . The display device according to claim 1 , wherein
the connection region is provided with a plurality of first terminals, and a flexible printed circuit is connected to the plurality of first terminals.

Assignees

• Japan Display Inc

Inventors

• Miyamoto Mitsuhide
• Akimoto Hajime

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• G06F2203/04102

  Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper · CPC title

• H10K50/8426

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K50/17

  Carrier injection layers · CPC title