IP Library › Granted Patent US 12,507,512
Granted Patent B2
US 12,507,512 · App. 17/103,905 · Granted Dec 23, 2025

Wafer-level light emitting diode package and method of fabricating the same

Inventors: Won Cheol Seo (Ansan-si, KR); Dae Sung Cho (Ansan-si, KR)
Assignee: SEOUL SEMICONDUCTOR CO., LTD.
H10H20/854H10H20/01H10H20/01335H10H20/018H10H20/812H10H20/814H10H20/815H10H20/82H10H20/821H10H20/825H10H20/831H10H20/8312H10H20/8314H10H20/833H10H20/835H10H20/84H10H20/841H10H20/8506H10H20/851H10H20/8512H10H20/8514H10H20/8515H10H20/855H10H20/857H10H20/8582H10H20/8585H10H29/10H10H29/14H01L2924/0002H10H20/032H10H20/034H10H20/036H10H20/0361H10H20/0362H10H20/0364H10H20/0365H10H20/819
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Quick Facts
Patent No.
US 12,507,512
App. No.
17/103,905
Granted
Dec 23, 2025
Kind
B2
Abstract

Exemplary embodiments of the present invention provide a wafer-level light emitting diode (LED) package and a method of fabricating the same. The LED package includes a semiconductor stack including a first conductive type semiconductor layer, an active layer, and a second conductive type semiconductor layer; a plurality of contact holes arranged in the second conductive type semiconductor layer and the active layer, the contact holes exposing the first conductive type semiconductor layer; a first bump arranged on a first side of the semiconductor stack, the first bump being electrically connected to the first conductive type semiconductor layer via the plurality of contact holes; a second bump arranged on the first side of the semiconductor stack, the second bump being electrically connected to the second conductive type semiconductor layer; and a protective insulation layer covering a sidewall of the semiconductor stack.

Claims (39)

1 . A light emitting diode (LED) package, including:

a semiconductor stack comprising a first conductive type semiconductor layer, a second conductive type semiconductor layer and an active layer that is interposed between the first conductive type semiconductor layer and the second conductive type semiconductor layer, wherein the active layer is configured to generate light under an electrical signal applied to the first conductive type semiconductor layer and the second conductive type semiconductor layer;

a first contact layer electrically connected to the first conductive type semiconductor layer;

a second contact layer electrically connected to the second conductive type semiconductor layer;

an insulator disposed under the semiconductor stack, the first contact layer and the second contact layer, the insulator having a first surface and a second surface, a distance between the first surface and the semiconductor stack being smaller than a distance between the second surface and the semiconductor stack; and

at least three metallic regions that are spaced apart from one another and exposed to an outside of the insulator, each of the at least three metallic regions having a surface located under the second surface of the insulator, and

wherein the at least three metallic regions include:

a first metallic region electrically connected to the first contact layer disposed on the first surface;

a second metallic region electrically connected to the second contact layer; and

a third metallic region electrically disconnected from the first metallic region and

the second metallic region and overlapping with the semiconductor stack, and

wherein the first metallic region, the second metallic region, and the third metallic region are disposed at a same level spaced apart from the first surface of the insulator.

2 . The LED package of claim 1 , wherein the second metallic region partially overlaps with the first contact layer.

3 . The LED package of claim 2 , further comprising an electrode pad electrically connected to the second contact layer, wherein the insulator is disposed on the electrode pad and the second metallic region is electrically connected to the electrode pad.

4 . The LED package of claim 1 , wherein the insulator includes openings and the first metallic region and the second metallic region fill the openings.

5 . The LED package of claim 4 , wherein the first metallic region and the second metallic region protrude from the insulator.

6 . The LED package of claim 5 , wherein the first metallic region and the second metallic region comprise pads formed on top surfaces thereof, respectively.

7 . The LED package of claim 5 , wherein the first metallic region and the second metallic region include portions outside of the insulator and the portions have widths greater than widths of the openings of the insulator, respectively.

8 . The LED package of claim 1 , wherein the first metallic region and the second metallic region have substantially rectangular shapes.

9 . The LED package of claim 8 , wherein a spacing between the first metallic region and the second metallic region is greater than a length of a short side of the first metallic region or the second metallic region.

10 . The LED package of claim 1 , wherein the first contact layer includes a plurality of contact portions contacting the first conductive type semiconductor layer and a connection portion connecting the plurality of contact portions.

11 . The LED package of claim 10 , further comprising an electrode pad electrically connected to the second contact layer, wherein the electrode pad is spaced apart from the connection portion.

12 . The LED package of claim 10 , wherein the at least three metallic regions include a first metallic region electrically connected to the first contact layer and a second metallic region electrically connected to the second contact layer.

13 . The LED package of claim 12 , wherein the first metallic region partially overlaps with the second contact layer and the second metallic region partially overlaps with the first contact layer.

14 . The LED package of claim 1 , wherein the insulator is an insulation layer or an insulation substrate.

15 . The LED package of claim 1 , wherein the second contact layer comprises reflective layer.

16 . The LED package of claim 1 , wherein the first contact layer comprises a reflective layer.

17 . The LED package of claim 1 , further comprising a growth substrate on which the semiconductor stack is disposed.

18 . A light emitting diode (LED) package, including;

a semiconductor stack comprising a first conductive type semiconductor layer, a second conductive type semiconductor layer and an active layer that is interposed between the first conductive type semiconductor layer and a second conductive type semiconductor layer, wherein the active layer is configured to generate light under an electrical signal applied to the first conductive type semiconductor layer and the second conductive type semiconductor layer;

an insulator disposed under the semiconductor stack, the insulator having a first surface and a second surface, a distance between the first surface and the semiconductor stack being smaller than a distance between the second surface and the semiconductor stack; and

at least three metallic regions spaced apart from one another and exposed to an outside of the insulator, each of the at least three metallic regions having a surface located under the second surface of the insulator, and

wherein the at least three metallic regions include:

a first metallic region electrically connected to a first contact layer disposed on the first surface;

a second metallic region electrically connected to a second contact layer; and

a third metallic region electrically disconnected from the first metallic region and

the second metallic region and overlapping with the semiconductor stack, and

wherein the first metallic region, the second metallic region, and the third metallic region are disposed at a same level spaced apart from the first surface of the insulator.

19 . The LED package of claim 18 , wherein the insulator includes openings and the at least three metallic regions fill the openings.

Priority Claims (2)
KR 10-2010-0092807 · Sep 24, 2010 · national
KR 10-2010-0092808 · Sep 24, 2010 · national
Continuity (8)
Continuation 16138370 · Sep 21, 2018
Continuation 16101287 · Aug 10, 2018
Continuation 15389413 · Dec 22, 2016
Continuation 15041907 · Feb 11, 2016
Continuation 14815433 · Jul 31, 2015
Continuation 14708029 · May 8, 2015
Continuation 13194317 · Jul 29, 2011
Related Publication 20210083155A1 · Mar 18, 2021
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