IP Library Granted Patent US 10,396,303
Granted Patent B2
US 10,396,303 · App. 15/933,607 · Granted Aug 27, 2019

Organic electroluminescence display device

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,396,303
App. No.
15/933,607
Granted
Aug 27, 2019
Kind
B2
Abstract

An organic electroluminescence display device comprising a plurality of light emitting elements, a sealing film covering the plurality of light emitting elements, and having a top surface which is an inorganic film made of a first inorganic material, a protective film made of an organic material, the protective film covering the sealing film, and a close-fitting layer made of a second inorganic material and located between the top surface of the sealing film and the protective film. The first inorganic material has higher moisture-barrier properties than the second inorganic material, and adhesion between the second inorganic material and the organic material is higher than adhesion between the first inorganic material and the organic material.

Claims (39)

1. An organic electroluminescence display device, comprising:

a plurality of light emitting elements;

a sealing film covering the plurality of light emitting elements, and having a top surface which is an inorganic film made of a first inorganic material;

a protective film made of an organic material, the protective film covering the sealing film; and

a close-fitting layer made of a second inorganic material, and located between the top surface of the sealing film and the protective film,

wherein

the first inorganic material has higher moisture-barrier properties than the second inorganic material,

adhesion between the second inorganic material and the organic material is higher than adhesion between the first inorganic material and the organic material,

an edge portion of the inorganic film overlaps with an edge portion of the close-fitting layer in a plan view,

the edge portion of the close-fitting layer overlaps with an edge portion of the protective film in the plan view,

the sealing film includes an organic film under the inorganic film and a second inorganic film under the organic film,

the edge portion of the inorganic film is in direct contact with an edge portion of the second inorganic film, and

the edge portion of the close-fitting layer overlaps with the edge portion of the second inorganic film, in the plan view.

2. The organic electroluminescence display device according to claim 1 , wherein the first inorganic material is silicon nitride.

3. The organic electroluminescence display device according to claim 1 , wherein the second inorganic material is amorphous silicon.

4. The organic electroluminescence display device according to claim 1 , wherein the second inorganic material is silicon oxide or silicon oxynitride.

5. An organic electroluminescence display device, comprising:

a plurality of light emitting elements;

an inorganic film above the plurality of light emitting elements, the inorganic film covering the plurality of light emitting elements;

an amorphous silicon layer on the inorganic film;

an organic film on the amorphous silicon layer, the organic film covering the plurality of light emitting elements,

a display area in which the plurality of light emitting elements are arranged; and

a peripheral area outside the display area, the peripheral area including terminals,

wherein

the inorganic film has an edge portion in the peripheral area and the amorphous silicon layer has an edge portion in the peripheral area, and

the edge portion of the inorganic film overlaps with the edge portion of the amorphous silicon layer, in a plan view.

6. The organic electroluminescence display device according to claim 5 , wherein the inorganic film includes silicon nitride.

7. The organic electroluminescence display device according to claim 5 , wherein

the organic film has an edge portion in the peripheral area, and

the edge portion of the amorphous silicon layer overlaps with the edge portion of the organic film in a plan view.

8. The organic electroluminescence display device according to claim 7 , further comprising:

a second inorganic film on a side of the plurality of light emitting elements, the inorganic film being located above the side; and

a second organic film between the inorganic film and the second inorganic film,

wherein

the inorganic film is in direct contact with the second inorganic film in the peripheral area, and

the edge portion of the amorphous silicon layer overlaps with an edge of the second inorganic film in the plan view.

9. The organic electroluminescence display device according to claim 7 , wherein

the peripheral area includes a curve area, and

the edge portion of the organic film is between the display area and the curve area.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 23, 2018
From: KAMIYA, AKINORI
To: JAPAN DISPLAY INC.
Reel/Frame 045324/0249 →