# US 10,319,703 B2 · Light bulb

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- Number: US 10,319,703 B2
- Document ID: US10319703B2
- Status: Granted
- Kind: B2
- Application number: 16/110,293
- Filed: 2018-08-23
- Published: 2018-12-20
- Granted: 2019-06-11
- Earliest claimed: 2012-08-15
- Assignees: Epistar Corporation
- Applicants: Epistar Corporation
- Inventors: Min Hsun Hsieh
- Web page: https://patentgrep.com/patent/US10319703B2

## CPC

- H10W 90/00: Package configurations
- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- H10H 20/851: Wavelength conversion means
- H10H 20/8513: {having two or more wavelength conversion materials}
- H10H 20/8515: {not being in contact with the bodies}
- H10W 70/099: {Connecting interconnections to insulating or insulated package substrates, interposers or redistribution layers}
- F21V 3/00: Globes; Bowls; Cover glasses (with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506)
- F21W 2121/00: Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
- F21Y 2107/00: Light sources with three-dimensionally disposed light-generating elements
- F21Y 2115/10: Light-emitting diodes [LED]
- H10H 20/8314: {extending at least partially onto an outer side surface of the bodies}
- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10W 72/20: Bump connectors, e.g. solder bumps or copper pillars; Dummy bumps; Thermal bumps
- H10W 72/9413: {on encapsulations}
- H10W 90/10: Configurations of laterally-adjacent chips
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A light-emitting device of an embodiment of the present application comprises light-emitting units; a transparent structure having cavities configured to accommodate at least one of the light-emitting units; and a conductive element connecting at least two of the light-emitting units.

## Claims

### Claim 1

A light bulb, comprising:
a first optoelectronic unit and a second optoelectronic unit, each optoelectronic unit comprising:
a light-emitting structure comprising a side surface, a first semiconductor layer, a second semiconductor layer, and a light-emitting layer formed between the first semiconductor layer and the second semiconductor layer; and
a first bonding pad and a second bonding pad formed on the first semiconductor layer;
a conductive element connecting the first bonding pad of the first optoelectronic unit and the second bonding pad of the second optoelectronic unit, without covering the side surfaces of the first optoelectronic unit and the second optoelectronic unit;
a transparent structure, pervious to light from the light-emitting structure, and continuously covering the light-emitting structures and the conductive element, and having a curved surface;
a first terminal and a second terminal electrically connecting the first optoelectronic unit and the second optoelectronic unit, and formed on a same side of the transparent structure; and
a cover covering the first optoelectronic unit, the second optoelectronic unit, the conductive element, and the transparent structure.

### Claim 2 (depends on 1)

The light bulb of claim 1, wherein the transparent structure can be bent into a curved shape.

### Claim 3 (depends on 1)

The light bulb of claim 1, further comprising a wavelength converting material in the transparent structure.

### Claim 4 (depends on 1)

The light bulb of claim 1, wherein the transparent structure has a plurality of the cavities accommodating the first optoelectronic unit and the second optoelectronic unit, and a portion of the conductive element is located on the transparent structure and between two of the plurality of the cavities.

### Claim 5 (depends on 1)

The light bulb of claim 1, wherein the first terminal is arranged on an end of the transparent structure.

### Claim 6 (depends on 1)

The light bulb of claim 1, wherein the first optoelectronic unit and the second optoelectronic unit are arranged in a dispersive type.

### Claim 7 (depends on 1)

The light bulb of claim 1, wherein long sides of the first optoelectronic unit and the second optoelectronic unit are not arranged in a line.

### Claim 8 (depends on 7)

The light bulb of claim 7, wherein short sides of the first optoelectronic unit and the second optoelectronic unit are not arranged in a line.

### Claim 9 (depends on 1)

The light bulb of claim 1, wherein the transparent structure has a melting point higher than an operation temperature of the first optoelectronic unit.

### Claim 10 (depends on 1)

The light bulb of claim 1, wherein the transparent structure can be bent into a 3-dimention shape.

### Claim 11 (depends on 1)

The light bulb of claim 1, wherein the transparent structure directly contacts the side surface.

### Claim 12 (depends on 1)

The light bulb of claim 1, further comprising a socket couples to the cover.

### Claim 13 (depends on 12)

The light bulb of claim 12, wherein the first terminal and the second terminal plug into the socket.

### Claim 14 (depends on 12)

The light bulb of claim 12, wherein the transparent structure plugs into the socket.

### Claim 15 (depends on 1)

The light bulb of claim 1, wherein the transparent structure has a first portion extending along a first direction, a second portion extending along a second portion, and a third portion extending along a third direction.

### Claim 16 (depends on 15)

The light bulb of claim 15, wherein the second direction and the third direction differ from the first direction.

### Claim 17 (depends on 1)

The light bulb of claim 1, further comprising a reflective layer formed on the first semiconductor layer.

### Claim 18 (depends on 1)

The light bulb of claim 1, wherein the first optoelectronic unit and the second optoelectronic unit are embedded in the transparent structure.

### Claim 19 (depends on 1)

The light bulb of claim 1, wherein the first optoelectronic unit and the second optoelectronic unit are connected in series.

### Claim 20 (depends on 1)

The light bulb of claim 1, wherein the first optoelectronic unit and the second optoelectronic unit are connected in parallel.