IP Library › Granted Patent US 12,178,067
Granted Patent B2
US 12,178,067 · App. 18/500,183 · Granted Dec 24, 2024

Display device

Inventor: Heisuke Kanaya (Tokyo, JP)
Assignee: Japan Display Inc.
H10K50/8426H01L27/1248H01L29/42384H01L29/78666H01L29/78669H10K50/13H10K50/15H10K50/167H10K50/828H10K50/84H10K50/844H10K59/121H10K59/1213H10K59/124H10K77/111H10K2102/311Y02E10/549
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Quick Facts
Patent No.
US 12,178,067
App. No.
18/500,183
Granted
Dec 24, 2024
Kind
B2
Abstract

A display device includes a substrate, a plurality of pixels above the substrate, each of the pixels including a light emitting element, a display region including the plurality of pixels, a thin film transistor which each of the plurality of pixels includes, a protective film including a first inorganic insulating material and located between the thin film transistor and the light emitting element, a sealing film including a second inorganic insulating material and covering the light emitting element, and at least one through hole located in the display region and passing through the substrate, the protective film, and the sealing film, wherein the second inorganic insulating material is in direct contact with the protective film in a first region located between the through hole and the pixels.

Claims (75)

1. A display device comprising:

a substrate having a through hole;

a plurality of pixels above the substrate, each of the pixels including a light emitting element and a thin film transistor;

an interlayer insulating film covering a gate electrode of the thin film transistor;

a planarization film arranged above the thin film transistor and under the light emitting element;

a sealing film arranged on an upper side of the light emitting element and covered plurality of pixels;

a display region including the plurality of pixels; and

a periphery region located outer side of the display region,

wherein

the display region includes a pixel region arranged the plurality of pixels, a first region and the through hole,

the first region is arranged between the through hole and the pixel region,

the pixel region has a dummy pixel not emitting light adjacent to the first region,

the sealing film includes a first inorganic insulating film, an organic insulating film, and a second inorganic insulating film,

the organic insulating film is opposed to a first side surface of the planarization film in the first region,

the first inorganic insulating film is directly in contact with the second inorganic insulating film in the first region,

the first inorganic insulating film and the second inorganic insulating film covers a second side surface of the interlayer insulating film,

the interlayer insulating film has an inclined side surface facing through hole, and

the first inorganic insulating film covers the inclined side surface of the interlayer insulating film.

2. The display device according to claim 1 , wherein

the organic insulating film is located between the first inorganic insulating film and the second inorganic insulating film.

3. The display device according to claim 1 , wherein

the light emitting element of the each of the pixels includes an organic layer, a counter electrode, and a pixel electrode connected to the thin film transistor, and

the dummy pixel includes a dummy organic layer, the counter electrode, and a dummy pixel electrode not connected to the thin film transistor.

4. The display device according to claim 1 , wherein

the substrate includes a first substrate and a second substrate arranged under the first substrate, and

the first inorganic insulating film is directly in contact with the first substrate.

5. The display device according to claim 4 , wherein

the first inorganic insulating film covers a side surface of the first substrate facing the through hole.

6. A display device comprising:

a substrate having a through hole;

a plurality of pixels above the substrate, each of the pixels including a light emitting element and a thin film transistor;

an interlayer insulating film covering a gate electrode of the thin film transistor;

a planarization film arranged above the thin film transistor and under the light emitting element;

a sealing film arranged on an upper side of the light emitting element and covered plurality of pixels;

a display region including the plurality of pixels; and

a periphery region located outer side of the display region,

wherein

the display region includes a pixel region arranged the plurality of pixels, a first region and the through hole,

the first region is arranged between the through hole and the pixel region,

the pixel region has a dummy pixel not emitting light adjacent to the first region,

the sealing film includes a first inorganic insulating film, an organic insulating film, and a second inorganic insulating film,

the organic insulating film is opposed to a first side surface of the planarization film in the first region,

the first inorganic insulating film is directly in contact with the second inorganic insulating film in the first region,

the first inorganic insulating film and the second inorganic insulating film covers a second side surface of the interlayer insulating film,

the light emitting element of the each of the pixels includes an organic layer, a counter electrode, and a pixel electrode connected to the thin film transistor, and

the dummy pixel includes a dummy organic layer, the counter electrode, and a dummy pixel electrode not connected to the thin film transistor.

7. The display device according to claim 6 , wherein

the organic insulating film is located between the first inorganic insulating film and the second inorganic insulating film.

8. The display device according to claim 6 , wherein

the substrate includes a first substrate and a second substrate arranged under the first substrate, and

the first inorganic insulating film is directly in contact with the first substrate.

9. The display device according to claim 8 , wherein

the first inorganic insulating film covers a side surface of the first substrate facing the through hole.

10. A display device comprising:

a substrate having a through hole;

a plurality of pixels above the substrate, each of the pixels including a light emitting element and a thin film transistor;

an interlayer insulating film covering a gate electrode of the thin film transistor;

a planarization film arranged above the thin film transistor and under the light emitting element;

a sealing film arranged on an upper side of the light emitting element and covered plurality of pixels;

a display region including the plurality of pixels; and

a periphery region located outer side of the display region,

wherein

the display region includes a pixel region arranged the plurality of pixels, a first region and the through hole,

the first region is arranged between the through hole and the pixel region,

the pixel region has a dummy pixel not emitting light adjacent to the first region,

the sealing film includes a first inorganic insulating film, an organic insulating film, and a second inorganic insulating film,

the organic insulating film is opposed to a first side surface of the planarization film in the first region,

the first inorganic insulating film is directly in contact with the second inorganic insulating film in the first region,

the first inorganic insulating film and the second inorganic insulating film covers a second side surface of the interlayer insulating film,

the substrate includes a first substrate and a second substrate arranged under the first substrate, and

the first inorganic insulating film is directly in contact with the first substrate.

11. The display device according to claim 10 , wherein

the organic insulating film is located between the first inorganic insulating film and the second inorganic insulating film.

12. The display device according to claim 10 , wherein

the first inorganic insulating film covers a side surface of the first substrate facing the through hole.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
Priority Claims (1)
JP 2016-230245 · Nov 28, 2016 · national
Continuity (5)
Continuation 17396835 · Aug 9, 2021
Continuation 16779716 · Feb 3, 2020
Continuation 16221731 · Dec 17, 2018
Continuation 15813240 · Nov 15, 2017
Related Publication 20240065023A1 · Feb 22, 2024