IP Library Granted Patent US 11,107,797
Granted Patent B2
US 11,107,797 · App. 17/002,672 · Granted Aug 31, 2021

Light-emitting device and the method of manufacturing the same

Inventors: Jui-Hsien Chang (Hsinchu, TW); Been-Yu Liaw (Hsinchu, TW); Cheng-Nan Han (Hsinchu, TW); Min-Hsun Hsieh (Hsinchu, TW)
Assignee: EPISTAR CORPORATION
H01L25/0753H01L33/46H01L33/505H01L33/62H01L2224/16225H05K1/113H05K3/284H05K3/305H05K2201/10106H05K2201/10113H05K2201/2054H05K2203/1461
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Quick Facts
Patent No.
US 11,107,797
App. No.
17/002,672
Granted
Aug 31, 2021
Kind
B2
Abstract

The present application discloses a light-emitting device including a first support structure having a first surface, a plurality of light-emitting elements arranged on the first surface, and a first adhesive layer arranged on the first support structure. Each light-emitting element has a side wall, a bottom surface, a first electrode pad, and a second electrode pad arranged on the bottom surface. The first adhesive layer surrounds the side wall and does not directly contact the bottom surface. The first support structure includes a plurality of through holes located on positions corresponding to the first electrode pad and the second electrode pad.

Claims (17)

1. A light-emitting device, comprising:

a supporting structure having a top surface;

a plurality of conductive structures passing through the supporting structure;

a first light-emitting element arranged on the supporting structure, and having a first width and a plurality of first side walls;

a second light-emitting element having a second width and a plurality of second side walls, and arranged on the supporting structure in a configuration of separating from the first light-emitting element by a first distance which is larger than the first width or the second width;

a layer comprising at least one kind of wavelength conversion materials, and covering the first light-emitting element, the second light-emitting element, and a portion of the top surface, wherein the portion is not overlapped with the first light-emitting element and the second light-emitting element; and

a first reflecting layer contacting the plurality of first side walls,

wherein the plurality of conductive structures is arranged right under the first light-emitting element and the second light-emitting element.

2. The light-emitting device according to claim 1 , wherein the first reflecting layer is placed between the plurality of first side walls and the layer.

3. The light-emitting device according to claim 1 , further comprising a second reflecting layer contacting the plurality of second side walls and separated from the plurality of first side walls.

4. The light-emitting device according to claim 3 , wherein the layer is placed between the first reflecting layer and the second reflecting layer.

5. The light-emitting device according to claim 1 , wherein the first reflecting layer has a third width smaller than the first width.

6. The light-emitting device according to claim 1 , wherein the layer directly contacts the supporting structure.

7. The light-emitting device according to claim 1 , wherein the first light-emitting element and the second light-emitting element emit a blue light under operation.

8. The light-emitting device according to claim 1 , wherein the layer has a first portion covering the first light-emitting element, and a second portion covering the second light-emitting element.

9. The light-emitting device according to claim 8 , wherein the first portion is separated from the second portion.

10. The light-emitting device according to claim 9 , wherein the first portion has a first kind of wavelength conversion material, and the second portion has a second kind of wavelength conversion material different from the first kind of wavelength conversion material of the first portion.

Assignments (2)
CHANGE OF NAME Recorded Feb 18, 2026
From: EPISTAR CORPORATION
To: ENNOSTAR CORPORATION
Reel/Frame 075171/0402 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 30, 2020
From: CHANG, JUI-HSIEN; LIAW, BEEN-YU; HAN, CHENG-NAN; HSIEH, MIN-HSUN
To: EPISTAR CORPORATION
Reel/Frame 054718/0565 →