IP Library › Granted Patent US 12,230,647
Granted Patent B2
US 12,230,647 · App. 18/512,392 · Granted Feb 18, 2025

Display device, manufacturing method of display device, and electronic device

Inventors: Shunpei Yamazaki (Tokyo, JP); Yoshiharu Hirakata (Kanagawa, JP); Takashi Hamada (Kanagawa, JP); Kohei Yokoyama (Kanagawa, JP); Yasuhiro Jinbo (Kanagawa, JP); Tetsuji Ishitani (Kanagawa, JP); Daisuke Kubota (Kanagawa, JP)
Assignee: Semiconductor Energy Laboratory Co., Ltd.
H01L27/1262G02F1/133345G02F1/133512G02F1/1339G02F1/136213G02F1/1368H01L27/1218H01L27/1225H01L27/1255H01L29/78648H10K50/8426H10K50/8428H10K50/844H10K59/38H10K59/40H10K71/50H10K2102/00
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Quick Facts
Patent No.
US 12,230,647
App. No.
18/512,392
Granted
Feb 18, 2025
Kind
B2
Abstract

A display device in which a peripheral circuit portion has high operation stability is provided. The display device includes a first substrate and a second substrate. A first insulating layer is provided over a first surface of the first substrate. A second insulating layer is provided over a first surface of the second substrate. The first surface of the first substrate and the first surface of the second substrate face each other. An adhesive layer is provided between the first insulating layer and the second insulating layer. A protective film in contact with the first substrate, the first insulating layer, the adhesive layer, the second insulating layer, and the second substrate is formed in the vicinity of a peripheral portion of the first substrate and the second substrate.

Claims (94)

1. An electronic device comprising:

a first substrate;

a first adhesive layer provided on a first surface side of the first substrate;

a second substrate;

a second adhesive layer provided on a first surface side of the second substrate; and

an element layer provided between the first adhesive layer and the second adhesive layer,

wherein the element layer comprises:

a pixel portion; and

a peripheral circuit portion,

wherein the pixel portion comprises:

a first transistor;

a capacitor; and

a light-emitting element,

wherein the peripheral circuit portion comprises a second transistor,

wherein the electronic device further comprises:

a first conductive layer comprising a region configured to function as a gate electrode of the first transistor;

a second conductive layer comprising a region configured to function as a gate electrode of the second transistor;

a first insulating layer over and in contact with the first conductive layer and the second conductive layer;

a second insulating layer over the first insulating layer;

a first semiconductor layer over the second insulating layer, the first semiconductor layer comprising a channel formation region of the first transistor;

a second semiconductor layer over the second insulating layer, the second semiconductor layer comprising a channel formation region of the second transistor;

a third insulating layer over the first semiconductor layer and the second semiconductor layer; and

a fourth insulating layer over and in contact with the first semiconductor layer, the second semiconductor layer, and the second insulating layer,

wherein, in a plan view, in a region between an edge of the second substrate and the second transistor, the first insulating layer comprises a first region not overlapping with the second insulating layer,

wherein the first insulating layer comprises a second region overlapping with the first conductive layer,

wherein a thickness of the first region is thinner than a thickness of the second region, and

wherein the third insulating layer is in contact with the first region.

2. The electronic device according to claim 1 , further comprising:

a protective film,

wherein the protective film comprises a first region overlapping with the first substrate and the second substrate and a second region not overlapping with the second substrate,

wherein the protective film comprises a third region and a fourth region,

wherein the third region overlaps with the fourth region, and

wherein the protective film comprises one of platinum, nickel, cobalt, manganese, and copper.

3. An electronic device comprising:

a first substrate;

a first adhesive layer provided on a first surface side of the first substrate;

a second substrate;

a second adhesive layer provided on a first surface side of the second substrate; and

an element layer provided between the first adhesive layer and the second adhesive layer,

wherein the element layer comprises:

a pixel portion; and

a peripheral circuit portion,

wherein the pixel portion comprises:

a first transistor;

a capacitor; and

a light-emitting element,

wherein the peripheral circuit portion comprises a second transistor,

wherein the electronic device further comprises:

a first conductive layer comprising a region configured to function as a gate electrode of the first transistor;

a second conductive layer comprising a region configured to function as a gate electrode of the second transistor;

a first insulating layer over the first conductive layer and the second conductive layer;

a second insulating layer over the first insulating layer;

a first semiconductor layer over the second insulating layer, the first semiconductor layer comprising a channel formation region of the first transistor;

a second semiconductor layer over the second insulating layer, the second semiconductor layer comprising a channel formation region of the second transistor;

a third insulating layer over the first semiconductor layer and the second semiconductor layer; and

a fourth insulating layer over and in contact with the first semiconductor layer, the second semiconductor layer, and the second insulating layer,

wherein, in a region between an edge of the second substrate and the second transistor, the first insulating layer comprises a first region not overlapping with the second insulating layer,

wherein the first insulating layer comprises a second region overlapping with the first conductive layer,

wherein a thickness of the first region is thinner than a thickness of the second region, and

wherein the third insulating layer is in contact with the first region.

4. The electronic device according to claim 3 , further comprising:

a protective film provided on a second surface side of the first substrate and on a second surface side of the second substrate,

wherein the protective film comprises a first region and a second region,

wherein the first region overlaps with the second region, and

wherein the protective film comprises one of platinum, nickel, cobalt, manganese, and copper.

5. An electronic device comprising:

a first substrate;

a first adhesive layer provided on a first surface side of the first substrate;

a second substrate;

a second adhesive layer provided on a first surface side of the second substrate; and,

an element layer provided between the first adhesive layer and the second adhesive layer,

wherein the element layer comprises:

a pixel portion; and

a peripheral circuit portion,

wherein the pixel portion comprises:

a first transistor;

a capacitor; and

a light-emitting element,

wherein the peripheral circuit portion comprises a second transistor,

wherein the electronic device further comprises:

a first conductive layer comprising a region configured to function as a gate electrode of the first transistor;

a second conductive layer comprising a region configured to function as a gate electrode of the second transistor;

a first insulating layer over and in contact with the first conductive layer and the second conductive layer;

a second insulating layer over the first insulating layer;

a first semiconductor layer over the second insulating layer, the first semiconductor layer comprising a channel formation region of the first transistor;

a second semiconductor layer over the second insulating layer, the second semiconductor layer comprising a channel formation region of the second transistor; and

a third insulating layer over and in contact with the first semiconductor layer, the second semiconductor layer, and the second insulating layer,

wherein, in a plan view, the first insulating layer comprises a first region not overlapping with the second insulating layer,

wherein, in the plan view, the first insulating layer comprises a second region overlapping with the first conductive layer, and

wherein a thickness of the first region is thinner than a thickness of the second region.

6. The electronic device according to claim 5 , further comprising a protective film,

wherein the protective film comprises a first region and a second region,

wherein the first region of the protective film overlaps with the second region of the protective film, and

wherein the protective film comprises one of platinum, nickel, cobalt, manganese, and copper.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2023
From: YAMAZAKI, SHUNPEI; HIRAKATA, YOSHIHARU; HAMADA, TAKASHI; YOKOYAMA, KOHEI; JINBO, YASUHIRO; ISHITANI, TETSUJI; KUBOTA, DAISUKE
To: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Reel/Frame 065598/0189 →
Priority Claims (1)
JP 2014-219635 · Oct 28, 2014 · national
Continuity (4)
Continuation 17246788 · May 3, 2021
Continuation 16522182 · Jul 25, 2019
Division 14922658 · Oct 26, 2015
Related Publication 20240088172A1 · Mar 14, 2024
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