IP Library › Granted Patent US 11,672,148
Granted Patent B2
US 11,672,148 · App. 17/307,088 · Granted Jun 6, 2023

Display device and method for manufacturing the same

Inventors: Shunpei Yamazaki (Tokyo, JP); Masakatsu Ohno (Tochigi, JP); Hiroki Adachi (Tochigi, JP); Satoru Idojiri (Tochigi, JP); Koichi Takeshima (Tochigi, JP)
Assignee: Semiconductor Energy Laboratory Co., Ltd.
H01L27/3272B23K26/04B23K26/0617B23K26/0622B23K26/0643B23K26/0648B23K26/083H01L27/1225H01L27/1266H01L27/322H01L27/3258H01L27/3262H01L29/24H01L29/66969H01L29/7869H01L29/78603H01L51/003H01L51/0024H01L51/0027H01L51/0097H01L51/5246H01L51/5253H01L51/56H01L27/3244H01L41/314H01L51/5096H01L51/5284H01L2227/323H01L2227/326H01L2251/5338H01L2251/558Y02E10/549Y02P70/50
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Quick Facts
Patent No.
US 11,672,148
App. No.
17/307,088
Granted
Jun 6, 2023
Kind
B2
Abstract

A first organic resin layer is formed over a first substrate; a first insulating film is formed over the first organic resin layer; a first element layer is formed over the first insulating film; a second organic resin layer is formed over a second substrate; a second insulating film is formed over the second organic resin layer; a second element layer is formed over the second insulating film; the first substrate and the second substrate are bonded; a first separation step in which adhesion between the first organic resin layer and the first substrate is reduced; the first organic resin layer and a first flexible substrate are bonded with a first bonding layer; a second separation step in which adhesion between the second organic resin layer and the second substrate is reduced; and the second organic resin layer and a second flexible substrate are bonded with a second bonding layer.

Claims (53)

1. An electronic device comprising:

a first flexible substrate;

a first bonding layer over the first flexible substrate;

a first organic resin layer over the first bonding layer;

an insulating layer over the first organic resin layer;

a transistor over the insulating layer;

an organic electroluminescent element electrically connected to the transistor;

a touch sensor over the organic electroluminescent element;

a second organic resin layer over the organic electroluminescent element;

a second bonding layer over the second organic resin layer; and

a second flexible substrate over the second bonding layer,

wherein a thickness of the first organic resin layer is less than or equal to 20 μm, and

wherein at least a part of the electronic device is curved.

2. The electronic device according to claim 1 , wherein the first organic resin layer includes at least one of an epoxy resin, an aramid resin, an acrylic resin, a polyimide resin, a polyamide resin, and a polyamide-imide resin.

3. The electronic device according to claim 1 , wherein the first bonding layer includes at least one of an epoxy resin, an acrylic resin, a silicone resin, and a phenol resin.

4. The electronic device according to claim 1 , further comprising a color filter over the organic electroluminescent element.

5. The electronic device according to claim 1 , wherein the electronic device is a portable information terminal.

6. An electronic device comprising:

a first flexible substrate;

a first bonding layer over the first flexible substrate;

a first organic resin layer over the first bonding layer;

an insulating layer over the first organic resin layer;

a transistor over the insulating layer;

an organic electroluminescent element electrically connected to the transistor;

a touch sensor over the organic electroluminescent element;

a second organic resin layer over the organic electroluminescent element;

a second bonding layer over the second organic resin layer; and

a second flexible substrate over the second bonding layer,

wherein a thickness of the first organic resin layer is less than or equal to 20 μm,

wherein at least a part of the electronic device is curved, and

wherein the electronic device is charged by wireless power feeding.

7. The electronic device according to claim 6 , wherein the first organic resin layer includes at least one of an epoxy resin, an aramid resin, an acrylic resin, a polyimide resin, a polyamide resin, and a polyamide-imide resin.

8. The electronic device according to claim 6 , wherein the first bonding layer includes at least one of an epoxy resin, an acrylic resin, a silicone resin, and a phenol resin.

9. The electronic device according to claim 6 , further comprising a color filter over the organic electroluminescent element.

10. The electronic device according to claim 6 , wherein the electronic device is a portable information terminal.

11. An electronic device comprising:

a first flexible substrate;

a first bonding layer over the first flexible substrate;

a first organic resin layer over the first bonding layer;

an insulating layer over the first organic resin layer;

a transistor over the insulating layer;

an organic electroluminescent element electrically connected to the transistor;

a second organic resin layer over the organic electroluminescent element;

a second bonding layer over the second organic resin layer; and

a second flexible substrate over the second bonding layer,

wherein a thickness of the first organic resin layer is less than or equal to 20 μm,

wherein at least a part of the electronic device is curved, and

wherein the transistor includes an oxide semiconductor layer.

12. The electronic device according to claim 11 , wherein the oxide semiconductor layer includes indium and zinc.

13. The electronic device according to claim 11 , wherein the first organic resin layer includes at least one of an epoxy resin, an aramid resin, an acrylic resin, a polyimide resin, a polyamide resin, and a polyamide-imide resin.

14. The electronic device according to claim 11 , wherein the first bonding layer includes at least one of an epoxy resin, an acrylic resin, a silicone resin, and a phenol resin.

15. The electronic device according to claim 11 , further comprising a color filter over the organic electroluminescent element.

16. The electronic device according to claim 11 , wherein the electronic device is a portable information terminal.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2021
From: YAMAZAKI, SHUNPEI; OHNO, MASAKATSU; ADACHI, HIROKI; IDOJIRI, SATORU; TAKESHIMA, KOICHI
To: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Reel/Frame 056125/0957 →
Priority Claims (4)
JP 2013-249631 · Dec 2, 2013 · national
JP 2013-256872 · Dec 12, 2013 · national
JP 2013-272176 · Dec 27, 2013 · national
JP 2014-047348 · Mar 11, 2014 · national
Continuity (8)
Continuation 16872806 · May 12, 2020
Continuation 16856139 · Apr 23, 2020
Continuation 16204102 · Nov 29, 2018
Continuation 15894117 · Feb 12, 2018
Continuation 15416166 · Jan 26, 2017
Continuation 15145246 · May 3, 2016
Continuation 14553251 · Nov 25, 2014
Related Publication 20210257432A1 · Aug 19, 2021
Cited By (1)
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