IP Library Granted Patent US 10,490,598
Granted Patent B2
US 10,490,598 · App. 15/605,532 · Granted Nov 26, 2019

Light-emitting structure having a plurality of light-emitting structure units

Inventors: Jhih-Yong Yang (Hsinchu, TW); Hui-chun Yeh (Hsinchu, TW); Chien-Fu Shen (Hsinchu, TW); Tsun-Kai Ko (Hsinchu, TW)
Assignee: EPISTAR CORPORATION
H01L27/156H01L25/0753H01L27/153H01L33/44H01L33/20H01L33/382H01L33/385H01L33/62H01L2924/00H01L2924/0002
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Quick Facts
Patent No.
US 10,490,598
App. No.
15/605,532
Granted
Nov 26, 2019
Kind
B2
Abstract

A light-emitting structure, comprising: a first light-emitting structure unit and a second light-emitting structure unit, adjacent to and spaced apart from each other; and an electrical connection arranged on the first light-emitting structure unit and the second light-emitting structure unit, and electrically connecting the first light-emitting structure unit and the second light emitting structure unit; wherein the first light-emitting structure unit comprises a first side surface and a second side surface; wherein the first side surface is between the first and the second light-emitting structure units, and the second side surface is not between the first light-emitting structure unit and the second light-emitting structure unit; and wherein the first side surface is inclined and a slope of the first side surface is gentler than a slope of the second side surface.

Claims (14)

1. A light-emitting structure, comprising: a first light-emitting structure unit and a second light-emitting structure unit, adjacent to and spaced apart from each other; a first trench and a second trench between the first light-emitting structure unit and the second light-emitting structure unit; an electrical connection arranged on the first light-emitting structure unit and the second light-emitting structure unit, electrically connecting the first light-emitting structure unit and the second light-emitting structure unit; and a turn between the first trench and the second trench; wherein the first light-emitting structure unit comprises a first side surface and a second side surface, and the first side surface is between the first light-emitting structure unit and the second light-emitting structure unit, and the second side surface is not between the first fight-emitting structure unit and the second light-emitting structure unit; wherein the first side surface is inclined and a slope of the first side surface is gentler than a slope of the second side surface; wherein the second trench connects to the first trench and the second side surface; and wherein an angle of the turn is larger than 90 degrees.

2. The light-emitting structure of claim 1 , further comprising a substrate which the first light-emitting structure unit and the second light-emitting structure unit are formed thereon; wherein a top surface of the substrate is not exposed by the first light-emitting structure unit at the position where the second side surface located.

3. The light-emitting structure of claim 1 , wherein an area of a top surface of the first light-emitting structure unit is larger than that of the second light-emitting structure unit from a top view.

4. The light-emitting structure of claim 1 , wherein the angle of the turn is between about 120 degrees and 150 degrees.

5. The light-emitting structure of claim 1 , further comprising a third light-emitting structure unit adjacent to the first light-emitting structure unit and a fourth light-emitting structure unit adjacent to the second light-emitting structure unit; wherein an area of a top surface of each of the third and the fourth light-emitting structure units is larger than that of the second light-emitting structure unit and smaller than that of the first light-emitting structure unit from a top view.

6. The light-emitting structure of claim 1 , wherein in a top view, the second light-emitting structure unit comprises a protrusion adjacent to the second trench and protruding toward the first light-emitting structure unit.

7. The light-emitting structure of claim 1 , wherein the first light-emitting structure unit comprises a bottom surface connecting to the first side surface, and a first angle between the first side surface and the bottom surface is smaller than 80 degrees.

8. The light-emitting structure of claim 1 , wherein the first light-emitting structure unit comprises a bottom surface connecting to the second side surface, and a second angle between the second side surface and the bottom surface is approximately 90 degrees.

9. The light-emitting structure of claim 1 , wherein the electrical connection is arranged on the first side surface.

10. The light-emitting structure of claim 1 , wherein the second side surface is devoid of the electrical connection arranged thereon.

11. The light-emitting structure of claim 1 , wherein the first light-emitting structure unit comprises a lower layer and an upper layer on the lower layer; wherein the lower layer comprises a mesa area surrounding the upper layer from a top view of the light-emitting structure.

12. The light-emitting structure of claim 11 , further comprising a substrate which the first light-emitting structure unit and the second light-emitting structure unit are formed thereon;

wherein a top surface of the substrate is not exposed by the first light-emitting structure unit at the position where the second side surface is located.

13. The light-emitting structure of claim 1 , further comprising a bonding pad formed on the first light-emitting structure unit.

Assignments (2)
CHANGE OF NAME Recorded Feb 26, 2026
From: EPISTAR CORPORATION
To: ENNOSTAR CORPORATION
Reel/Frame 075152/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 5, 2017
From: YANG, JHIH-YONG; YEH, HUI-CHUN; SHEN, CHIEN-FU; KO, TSUN-KAI
To: EPISTAR CORPORATION
Reel/Frame 042907/0191 →
Continuity (5)
Continuation In Part 15196717 · Jun 29, 2016
Continuation 14924264 · Oct 27, 2015
Continuation 13230988 · Sep 13, 2011
Provisional Application 61382451 · Sep 13, 2010
Related Publication 20170263674A1 · Sep 14, 2017