IP Library Granted Patent US 11,489,098
Granted Patent B2
US 11,489,098 · App. 16/670,585 · Granted Nov 1, 2022

Light emitting device, light emitting module, method of manufacturing light emitting device, and method of manufacturing light emitting module

Inventors: Shinichi Daikoku (Tokushima, JP); Toru Hashimoto (Tokushima, JP)
Assignee: NICHIA CORPORATION
H01L33/62G02B6/0068G02B6/0073H01L33/486H01L33/54H01L33/60H01L2933/005H01L2933/0033H01L2933/0058H01L2933/0066
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Quick Facts
Patent No.
US 11,489,098
App. No.
16/670,585
Granted
Nov 1, 2022
Kind
B2
Abstract

The light emitting device includes a light emitting element having an electrode-formed surface on which electrode posts are formed; a covering member covering the electrode-formed surface and lateral surfaces of the light emitting element while forming an exposure portion of each of the electrode posts which are exposed from the covering member; a pair of electrode layers provided on a surface of the covering member and electrically connected to the exposed portions of the electrode posts; and a pair of electrode terminals which are respectively electrically connected to the electrode layers, having a surface area larger than a surface area of the electrode posts, and having an outer edge positioned at an end portion of the covering member; and an insulating member provided between the pair of the electrode terminals while being in contact with lateral surfaces of the pair of electrode terminals.

Claims (26)

1. A light emitting device comprising:

a light emitting element having an electrode-formed surface on which a pair of electrode posts are formed;

a covering member covering the electrode-formed surface and lateral surfaces of the light emitting element while forming an exposure portion for each of the pair of electrode posts exposed from the covering member;

a pair of electrode layers provided on a surface of the covering member and electrically connected to the exposed portions of the pair of electrode posts; and

a pair of electrode terminals which are respectively electrically connected to the pair of electrode layers, having a surface area larger than a surface area of the pair of the electrode posts, and having an outer edge positioned at an end portion of the covering member; an outer edge of the pair of electrode terminals is substantially coplanar with an outer edge of the covering member, and

an insulating member provided between the pair of electrode terminals while being in contact with lateral surfaces of the pair of electrode terminals;

the pair of electrode posts are spaced apart from each other in a first direction,

the pair of electrode terminals are spaced apart from the light emitting element in a second direction perpendicular to the first direction, and

a distance between the pair of electrode terminals in the first direction is longer than a width of the light emitting element in the first direction.

2. The light emitting device according to claim 1 , wherein the insulating member covers surfaces of the pair of electrode layers exposed from the pair of electrode terminals and a surface of the covering member.

3. The light emitting device according to claim 1 , wherein a surface of the insulating member and surfaces of the pair of electrode terminals are flush with each other.

4. The light emitting device according to claim 1 , wherein

the insulating member has light-transmissivity, and

the pair of electrode posts are disposed inward of the insulating member.

5. The light emitting device according to claim 1 , wherein a thickness of one of the pair of electrode terminals is greater than a thickness of one of the pair of electrode layers.

6. The light emitting device according to claim 5 , wherein the thickness of one of the pair of electrode terminals is not less than 10 times the thickness of one of the pair of electrode layers.

7. The light emitting device according to claim 1 , wherein

the electrode-formed surface of the light emitting element has a quadrangular shape, and

the pair of the electrode terminals are disposed at symmetric positions on the outer edge of the electrode-formed surface.

8. A light emitting module comprising:

the light emitting device according to claim 1 ; and

a light-transmissive light guiding plate in which a recessed portion is formed on a second principal surface opposite to a first principal surface serving as a light emitting surface from which light exits,

the light emitting device being disposed in the recessed portion of the light guiding plate.

9. The light emitting device according to claim 1 , further comprising:

a light-transmissive member covers the light emitting element and the covering member.

10. The light emitting device according to claim 9 , wherein an outer edge of the light-transmissive member and an outer edge of the covering member are flush with each other.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 1, 2019
From: DAIKOKU, SHINICHI; HASHIMOTO, TORU
To: NICHIA CORPORATION
Reel/Frame 050887/0957 →
Priority Claims (3)
JP JP2018-206191 · Oct 31, 2018 · national
JP JP2019-086385 · Apr 26, 2019 · national
JP JP2019-192743 · Oct 23, 2019 · national
Continuity (1)
Related Publication 20200135999A1 · Apr 30, 2020