IP Library › Granted Patent US 11,410,979
Granted Patent B2
US 11,410,979 · App. 16/901,348 · Granted Aug 9, 2022

Light-emitting element, and method for producing a light-emitting element

Inventor: Takahiro Yajima (Odawara, JP)
Assignee: Canon Kabushiki Kaisha
H01L25/18
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Quick Facts
Patent No.
US 11,410,979
App. No.
16/901,348
Granted
Aug 9, 2022
Kind
B2
Abstract

A light-emitting element in which a first member having a light-emitting diode layer formed therein, and a second member having a drive circuit layer formed therein, are stacked and bonded to each other, wherein the light-emitting diode layer and the drive circuit layer are electrically connected by an electrode; the second member includes a light-shielding portion different from the electrode; the light-shielding portion is disposed so as to cover at least part of a first pixel and a second pixel demarcated by an isolation structure provided in the light-emitting diode layer; and a layer that forms the light-emitting diode layer in the first pixel and a layer that forms the light-emitting diode layer in the second pixel are shared.

Claims (16)

1. A light-emitting element in which a first member having a light-emitting diode layer formed therein, and a second member having a drive circuit layer formed therein, are stacked and bonded to each other,

wherein the light-emitting diode layer and the drive circuit layer are electrically connected by an electrode;

the second member includes a light-shielding portion different from the electrode;

the light-shielding portion is disposed so as to cover at least part of a first pixel and a second pixel demarcated by an isolation structure provided in the light-emitting diode layer; and

a layer that forms the light-emitting diode layer in the first pixel and a layer that forms the light-emitting diode layer in the second pixel are shared.

2. The light-emitting element of claim 1 , wherein the light-shielding portion is a first wiring included in the drive circuit layer.

3. The light-emitting element of claim 2 ,

wherein the light-shielding portion is formed between a second wiring included in the drive circuit layer and the first member; and

the second wiring is electrically connected to the electrode.

4. The light-emitting element of claim 2 , having a structure for extracting light emitted from a surface of the first member, the surface opposing a surface at which the first member is bonded to the second member.

5. The light-emitting element of claim 1 , wherein the light-shielding portion is formed of at least any from among aluminum, titanium, a titanium alloy and copper.

6. The light-emitting element of claim 1 ,

wherein the first member has a first conductivity type region and a second conductivity type region;

a plurality of pixels are formed in the first member;

the first conductivity type region is electrically connected in common in the plurality of pixels, to a first electrode; and

the second conductivity type region is electrically connected, by a second electrode, to the drive circuit layer which drives the pixels, on a pixel-by-pixel basis.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 4, 2020
From: YAJIMA, TAKAHIRO
To: CANON KABUSHIKI KAISHA
Reel/Frame 053691/0873 →
Priority Claims (1)
JP JP2019-112140 · Jun 17, 2019 · national
Continuity (1)
Related Publication 20200395351A1 · Dec 17, 2020