# US 10,873,014 B2 · Light-emitting device

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- Number: US 10,873,014 B2
- Document ID: US10873014B2
- Status: Granted
- Kind: B2
- Application number: 16/172,406
- Filed: 2018-10-26
- Published: 2019-05-02
- Granted: 2020-12-22
- Earliest claimed: 2017-10-26
- Assignees: Epistar Corporation
- Applicants: Epistar Corporation
- Inventors: Min-Hsun Hsieh; Shih-An Liao
- Web page: https://patentgrep.com/patent/US10873014B2

## CPC

- H10H 20/856: Reflecting means
- H10H 20/814: having reflecting means, e.g. semiconductor Bragg reflectors
- H10H 20/831: characterised by their shape
- H10H 20/8512: {Wavelength conversion materials}
- H10H 20/853: characterised by their shape
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10W 90/00: Package configurations
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A light-emitting device includes a carrier, a light-emitting unit disposed on the carrier, a reflective element arranged on the light-emitting unit, and an optical element arranged on the carrier and surrounding the light-emitting unit.

## Claims

### Claim 1

A light-emitting device, comprising:
a carrier comprising a mirror reflection surface and a bottom surface opposite to the mirror reflection surface;
a light-emitting unit on the mirror reflection surface;
a reflective layer on the light-emitting unit and having a top surface and a side surface; and
a first optical structure surrounding the light-emitting unit and the reflective layer,
wherein the first optical structure comprises a topmost end higher than the light-emitting unit and lower than the top surface.

### Claim 2 (depends on 1)

The light-emitting device according to claim 1, further comprising a second optical structure on and directly connected to the light-emitting unit.

### Claim 3 (depends on 2)

The light-emitting device according to claim 2, wherein the first optical structure has a refractive index different from that of the second optical structure.

### Claim 4 (depends on 1)

The light-emitting device according to claim 1, wherein the first optical structure is directly connected to the side surface.

### Claim 5 (depends on 1)

The light-emitting device according to claim 1, wherein the first optical structure comprises a protruded surface.

### Claim 6 (depends on 1)

The light-emitting device according to claim 1, further comprising an electrode on the bottom surface.

### Claim 7 (depends on 1)

The light-emitting device according to claim 1, further comprising an angle smaller than 90° formed between the first optical structure and the mirror reflection surface.

### Claim 8 (depends on 1)

The light-emitting device according to claim 1, wherein the first optical structure is formed on the carrier symmetrically.

### Claim 9 (depends on 1)

The light-emitting device according to claim 1, further comprising a virtual center line passing through the light-emitting device, and a light intensity of the light-emitting device having a distribution being substantially symmetrical with the virtual center line.

### Claim 10 (depends on 9)

The light-emitting device according to claim 9, wherein the light intensity of light-emitting device has a maximum value on two sides within an angle range between 40° and 60° with respect to the virtual center line.

### Claim 11

A light-emitting device, comprising:
a carrier comprising a mirror reflection surface and a bottom surface opposite to the mirror reflection surface;
a light-emitting unit on the mirror reflection surface;
a reflective layer on the light-emitting unit and having a top surface and a side surface;
a first optical structure surrounding the light-emitting unit and the reflective layer; and
a virtual center line passing through the light-emitting device,
wherein a light intensity of the light-emitting device has a distribution being substantially symmetrical with the virtual center line, and
wherein the light intensity of light-emitting device has a maximum value on two sides within an angle range between 40° and 60° with respect to the virtual center line.

### Claim 12 (depends on 11)

The light-emitting device according to claim 11, further comprising a second optical structure on and directly connected to the light-emitting unit.

### Claim 13 (depends on 12)

The light-emitting device according to claim 12, wherein the first optical structure has a refractive index different from that of the second optical structure.

### Claim 14 (depends on 11)

The light-emitting device according to claim 11, wherein the first optical structure is directly connected to the side surface.

### Claim 15 (depends on 11)

The light-emitting device according to claim 11, wherein the first optical structure comprises a protruded surface.

### Claim 16 (depends on 11)

The light-emitting device according to claim 11, further comprising an electrode on the bottom surface.

### Claim 17 (depends on 11)

The light-emitting device according to claim 11, further comprising an angle smaller than 90° formed between the first optical structure and the mirror reflection surface.

### Claim 18 (depends on 11)

The light-emitting device according to claim 11, wherein the first optical structure is formed on the carrier symmetrically.