IP Library Granted Patent US 12,315,855
Granted Patent B2
US 12,315,855 · App. 17/652,347 · Granted May 27, 2025

Display device and method for manufacturing the same

Inventor: Kenichi Takemasa (Tokyo, JP)
Assignee: Japan Display Inc.
H01L25/167H01L24/81H10D86/021H10D86/441H10D86/60H01L24/05H01L24/13H01L24/16H01L2224/05111H01L2224/13144H01L2224/16145H01L2224/16502H01L2224/81007H01L2224/81224H01L2224/81805H01L2924/1033H01L2924/12041H01L2924/143H01L2924/404H01L2924/40503
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Quick Facts
Patent No.
US 12,315,855
App. No.
17/652,347
Granted
May 27, 2025
Kind
B2
Abstract

A display device includes a drive circuit on an insulating substrate; a connecting electrode electrically connected to the drive circuit; an LED element electrically connected to the drive circuit via the connecting electrode, and a first light reflecting layer overlapping the LED element and having an inclined surface. The inclined surface reflects light incident on the inclined surface through the LED element toward the connecting electrode. The first light reflecting layer may have a reflectance of 90 percent or more for light at a wavelength of 1.0 μm or more to 1.5 μm or less.

Claims (21)

1. A display device comprising:

a drive circuit on an insulating substrate;

a connecting electrode electrically connected to the drive circuit;

an LED element electrically connected to the drive circuit via the connecting electrode, and

a first light reflecting layer overlapping the LED element and having an inclined surface, wherein

the inclined surface reflects light incident on the inclined surface through the LED element toward the connecting electrode.

2. The display device according to claim 1 , wherein

the first light reflecting layer has a reflectance of 90 percent or more for light at a wavelength of 1.0 μm or more to 1.5 μm or less.

3. The display device according to claim 1 , wherein

the first light reflecting layer has a metal layer containing gold, silver, copper, or aluminum.

4. The display device according to claim 3 , wherein

the first light reflecting layer has a first metal layer and a second metal layer covering the first metal layer, and

the second metal layer is a metal layer containing gold, silver, copper, or aluminum.

5. The display device according to claim 1 , further comprising:

a second light reflecting layer located at a distance from the first light reflecting layer, wherein

the connecting electrode is located between the first light reflecting layer and the second light reflecting layer in a plan view.

6. The display device according to claim 1 , further comprising:

an insulating layer covering the first light reflecting layer, wherein

the connecting electrode is provided on the insulating layer.

7. The display device according to claim 1 , wherein

the connecting electrode overlaps on a part of the first light reflecting layer in a plan view.

Assignments (2)
CHANGE OF NAME Recorded Jul 28, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 071846/0383 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 24, 2022
From: TAKEMASA, KENICHI
To: JAPAN DISPLAY INC.
Reel/Frame 059241/0823 →
Priority Claims (1)
JP 2021-043955 · Mar 17, 2021 · national
Continuity (1)
Related Publication 20220302095A1 · Sep 22, 2022
References Cited (6)
US 20180031974A1 · Prevatte et al. · 2018 [cited by applicant]
US 20190312015A1 · Lau et al. · 2019 [cited by applicant]
KR 1020200131910A · 2020 [cited by applicant]
WO 2020026692A1 · 2020 [cited by applicant]
Machine-generated English translation of WO 2020/026692 (Year: 2020). [cited by examiner]
Office Action issued on Aug. 6, 2024, in corresponding Japanese Application No. 2021-043955, 6 pages. [cited by applicant]