Organic electro-luminescent display device

Patent metadata

Field	Value
Publication number	US-2016013442-A1
Application number	US-201514794545-A
Country	US
Kind code	A1
Filing date	Jul 8, 2015
Priority date	Jul 11, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

An organic EL display device includes an inorganic insulating film including a contact part as an opening where a contact electrode made of a conductive film is exposed, a TFT circuit layer provided on the inorganic insulating film and including a circuit including a thin film transistor, an organic EL element layer provided on the TFT circuit layer and including an organic EL element whose light emission is controlled by the circuit, and a sealing layer covering the organic EL element layer and made of an inorganic insulating material.

First claim

What is claimed is:

1 . An organic EL display device comprising:
an inorganic insulating film including a contact part as an opening where a contact electrode made of a conductive film is exposed; a TFT circuit layer provided on the inorganic insulating film and including a circuit including a thin film transistor (TFT); an organic EL element layer provided on the TFT circuit layer and including an organic EL element whose light emission is controlled by the circuit; and a sealing layer covering the organic EL element layer and made of an inorganic insulating material.

2 . The organic EL display device according to claim 1 , further comprising an electronic component including a terminal electrically connected to the contact electrode in the contact part.

3 . The organic EL display device according to claim 2 , wherein the electronic component is an FPC (Flexible Printed Circuit board).

4 . The organic EL display device according to claim 3 , wherein a driving integrated circuit element for controlling the circuit is mounted on the FPC.

5 . The organic EL display device according to claim 3 , wherein the FPC includes an antenna wiring for performing non-contact communication with an external control equipment.

6 . The organic EL display device according to claim 3 , wherein the FPC includes a solid metal film having an area of 25% or more of a display area in plan view.

7 . The organic EL display device according to claim 6 , further comprising a touch panel on the sealing layer.

8 . The organic EL display device according to claim 3 ,
wherein the FPC includes the terminal, and wherein the terminal of the FPC is electrically connected through the contact part provided in an outside frame area of a display area.

9 . The organic EL display device according to claim 8 ,
wherein the display is rectangular, wherein the contact part includes a low referential potential contact part and a high referential potential contact part which receive supply of potential difference required for light emission of the organic EL element, wherein at least one of the high referential potential contact part and the low referential potential contact part is provided at a plurality of places, and wherein the plurality of places is provided in the frame area corresponding to at least two sides of four sides of the display area.

10 . The organic EL display device according to claim 8 ,
wherein the display area is rectangular, wherein the contact part includes a plurality of image signal contact parts to receive an image signal, and wherein the image signal contact parts are provided in the frame area corresponding to two opposite sides of the display area.

11 . The organic EL display device according to claim 2 , wherein the electronic component is a driving integrated circuit element.

12 . The organic EL display device according to claim 2 , wherein the terminal of the electronic component is connected through an anisotropic conductive film.

13 . The organic EL display device according to claim 1 , wherein a part of the contact electrode overlaps the display area in plan view.

14 . The organic EL display device according to claim 1 , wherein the contact electrode overlaps the thin film transistor of the TFT circuit layer in plan view.

15 . The organic EL display device according to claim 1 , wherein the contact electrode electrically connects a plurality of electronic components to each other.

16 . The organic EL display device according to claim 13 , wherein the contact electrode contacts a conductive film extending from the TFT circuit layer or the organic EL element layer through a contact hole.

17 . The organic EL display device according to claim 14 , wherein the contact electrode contacts a conductive film extending from the TFT circuit layer or the organic EL element layer through a contact hole.

18 . The organic EL display device according to claim 15 , wherein the contact electrode contacts a conductive film extending from the TFT circuit layer or the organic EL element layer through a contact hole.

19 . The organic EL display device according to claim 1 , wherein the TFT circuit layer includes a signal distribution circuit to distribute an image signal inputted through a conductive film of the contact part to a plurality of wirings.

20 . The organic EL display device according to claim 1 , further comprising a sealing substrate bonded to the sealing layer and made of a transparent material.

Assignees

• Japan Display Inc

Inventors

• Akimoto Hajime
• Sato Toshihiro

Classifications

• G09G3/3225

  using an active matrix · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10D86/411

  characterised by materials, geometry or structure of the substrates · CPC title