# US 2015/0091033 A1 · Light enhancing structure for a light emitting diode

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- Number: US 2015/0091033 A1
- Document ID: US20150091033A1
- Status: Published application
- Kind: A1
- Application number: 14/308,706
- Filed: 2014-06-18
- Published: 2015-04-02
- Earliest claimed: 2013-10-01
- Assignees: Prolight Opto Technology Corporation
- Applicants: Prolight Opto Technology Corporation
- Inventors: Chen-Lun HSING CHEN; Jung-Hao HUNG; Ding-Yao LIN
- Web page: https://patentgrep.com/patent/US20150091033A1

## CPC

- H10H 20/841: Reflective coatings, e.g. dielectric Bragg reflectors
- H10H 20/819: characterised by their shape, e.g. curved or truncated substrates
- H10H 20/856: Reflecting means
- H10H 20/835: {Reflective materials}
- H10W 90/736: {between a chip and a stacked lead frame, conducting package substrate or heat sink}
- H10W 90/756: {between a chip and a stacked lead frame, conducting package substrate or heat sink}
- 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 enhancing structure includes a light emitting diode in it and at least one coating layer. The light emitting diode unit includes a plurality of surfaces and a light-emitting surface. The light-emitting surface is for allowing a plurality of lights generated inside the light emitting diode unit to emit through. The coating layer is formed on the surfaces for blocking or reflecting one of the lights generated inside the light emitting diode unit, and to light intensity of the light emitting diode unit is enhanced.

## Claims

### Claim 1

A light enhancing structure for a light emitting diode comprising:
a light emitting diode unit comprising a plurality of surfaces and a light-emitting surface, wherein the light-emitting surface is for allowing a plurality of lights generated inside the light emitting diode unit to emit through; and
at least one coating layer formed on the surfaces for blocking or reflecting one of the lights generated inside the light emitting diode unit, whereby a light intensity of the light emitting diode unit is enhanced.

### Claim 2 (depends on 1)

The light enhancing structure for the light emitting diode of claim 1, wherein a number of the coating layer is greater than two, and the coating, layers are stacked orderly on the surfaces.

### Claim 3 (depends on 2)

The light enhancing structure for the light emitting diode of claim 2, where a total thickness of the coating layers is 0.2 μm to 20 μm.

### Claim 4 (depends on 1)

The light enhancing structure for the light emitting diode of claim 1, wherein a thickness of each of the coating layer is 0.1 μm to 20 μm.

### Claim 5 (depends on 1)

The light enhancing structure for the light emitting diode of claim 1, wherein the coating layer is made of a polymer, an inorganic compound or a metal.

### Claim 6 (depends on 5)

The light enhancing structure for the light emitting diode of claim 5, wherein the metal is Al, Pt, Au, Ag, Zn or Cu.

### Claim 7 (depends on 5)

The light enhancing structure for the light emitting diode of claim 5, wherein the inorganic compound is ZrO2, TiO2, BaSO4, SiO2, AlN or Al2O3.

### Claim 8 (depends on 1)

The light enhancing structure for the light emitting diode of claim 1, wherein the lights generated inside the light emitting diode unit comprises at least one top emitting light and at least one side emitting light, and the coating layer is for blocking or reflecting the side emitting light.

### Claim 9 (depends on 1)

The light enhancing structure for the light emitting diode of claim 1, wherein the light emitting diode unit is a vertical electrode type, a horizontal electrode type or a flip chip type.

### Claim 10 (depends on 1)

The light enhancing structure for the light emitting diode of claim 1, wherein each of the surfaces is an inclined surface or a vertical surface.