# US 2014/0197438 A1 · Light emitting device and lighting apparatus having the same

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- Number: US 2014/0197438 A1
- Document ID: US20140197438A1
- Status: Published application
- Kind: A1
- Application number: 14/153,425
- Filed: 2014-01-13
- Published: 2014-07-17
- Earliest claimed: 2013-01-14
- Assignees: LG Innotek Co., Ltd.
- Inventors: Sung Joo OH; Bong Kul MIN
- Web page: https://patentgrep.com/patent/US20140197438A1

## CPC

- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10H 20/8502: {Surface mount technology [SMT] type packages}
- H10H 20/8506: {Containers}
- H10H 20/8508: {Package substrates, e.g. submounts}
- H10H 20/853: characterised by their shape
- H10H 20/855: Optical field-shaping means, e.g. lenses
- H10H 20/856: Reflecting means
- 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 emitting device include a first lead frame including a first bonding region and a second lead frame including a second bonding region. A gap is provided between the first and second lead frames. A first body is coupled to the first and second lead frames and includes an open region exposing the first and second bonding regions. A second body is coupled onto the first body and includes a first opening on the open region of the first body. A light emitting chip is provided on the second bonding region of the second lead frame, and a transmissive resin layer surrounds the light emitting chip in the open region of the first body and the first opening of the second body.

## Claims

### Claim 1

A light emitting device comprising:
a first lead frame including a first bonding region;
a second lead frame including a second bonding region;
a gap part provided between the first and second lead frames;
a first body coupled to the first and second lead frames and including an open region exposing the first and second bonding regions;
a second body coupled onto the first body and including a first opening on the open region of the first body;
a light emitting chip on the second bonding region of the second lead frame; and
a transmissive resin layer surrounding the light emitting chip in the open region of the first body and the first opening of the second body,
wherein the first body comprises a material having reflectance higher than reflectance of the second body,
a top surface of the first body is located at a position lower than a position of a top surface of the light emitting chip,
the first body comprises an inclined inner part around the open region, and
the first lead frame comprises a first hole which is disposed under the inner part of the first body and has an area greater than an area of a bottom surface of the light emitting chip.

### Claim 2 (depends on 1)

The light emitting device of claim 1, wherein a top surface of the inner part of the first body is inclined at an angle in a range of 2° to 5° with respect to top surfaces of the first and second lead frames.

### Claim 3 (depends on 1)

The light emitting device of claim 1, wherein an outer part of the first body has a thickness thicker than a thickness of the inner part, and
an entire top surface of the first body is located at a position lower than a position of a top surface of the light emitting chip.

### Claim 4 (depends on 1)

The light emitting device of claim 1, wherein the first hole has a width equal to or wider than 25% of a width of the first lead frame and a length longer than a width of the first hole.

### Claim 5 (depends on 4)

The light emitting device of claim 4, wherein the length of the first hole is longer than a width of the first opening.

### Claim 6 (depends on 4)

The light emitting device of claim 4, wherein the length of the first hole is smaller than a length of the first lead frame and equal to or longer than 60% of the length of the first lead frame.

### Claim 7 (depends on 1)

The light emitting device of claim 1, further comprising a plurality of recess regions recessed from top and bottom surfaces of the first lead frame in a region adjacent to the first hole.

### Claim 8 (depends on 4)

The light emitting device of claim 4, wherein the first lead frame includes a first extending part having a hemisphere shape recessed in direction opposite to the second lead frame on the first bonding region and connected to a portion of a wire which is connected to the light emitting chip.

### Claim 9 (depends on 8)

The light emitting device of claim 8, further comprising a recess region formed around the second bonding region and recessed lower than a top surface of the second lead frame.

### Claim 10 (depends on 8)

The light emitting device of claim 8, wherein the first lead frame comprises a first frame part including the first bonding region which is located at an inner region than the first hole;
a first lead part located at a outer region than the first hole; and
first and second connection parts connecting the first frame part to the first is lead part, and
the first hole is provided between the first frame part and the first lead part.

### Claim 11 (depends on 4)

The light emitting device of claim 4, wherein the second lead frame comprises a second frame part including the second bonding region;
a second lead part spaced apart from the second frame part;
a plurality of third connection parts connecting the second frame part to the second lead part; and
a plurality of second holes provided between the third connection parts.

### Claim 12 (depends on 11)

The light emitting device of claim 11, wherein each of the second holes has a width wider than the width of the first hole.

### Claim 13 (depends on 11)

The light emitting device of claim 11, wherein the inner part of the first body adjacent to the second bonding region is partially exposed through the first opening.

### Claim 14 (depends on 12)

The light emitting device of claim 12, further comprising a concavo-convex structure formed around the second hole corresponding to the second bonding region and coupled to the first body.

### Claim 15

A light emitting device comprising:
a first lead frame including a first bonding region;
a second lead frame including a second bonding region;
a gap part provided between the first and second lead frames;
a first body coupled to the first and second lead frames and including an open region exposing the first and second bonding regions;
a second body coupled onto the first body and including a first opening overlapped with the open region of the first body;
a light emitting chip on the second bonding region of the second lead frame; and
a transmissive resin layer surrounding the light emitting chip in the open region of the first body and the first opening of the second body,
wherein a top surface of the first body is located at a position lower than a position of a top surface of the light emitting chip,
the first body comprises an inclined inner part around the open region,
the first lead frame comprises a first hole which is provided under the inner part of the first body and has an area greater than an area of a bottom surface of the light emitting chip,
the first body is formed of a material having reflectance of 70% or more with respect to light emitted from the light emitting chip, and
the second body includes a material that transmits 70% or more of light emitted from the light emitting chip.

### Claim 16 (depends on 15)

The light emitting device of claim 15, wherein the first body includes a white resin material and the second body includes transmissive silicon or epoxy resin.

### Claim 17 (depends on 15)

The light emitting device of claim 15, wherein an outer part of the first lead frame extends outward than a first side surface of the second body, and
an outer part of the second lead frame extends outward than a second side surface opposite to the first side surface.

### Claim 18 (depends on 15)

The light emitting device of claim 15, further comprising a reflective layer formed on the transmissive resin layer and including a material identical to a material of the first body.

### Claim 19 (depends on 15)

The light emitting device of claim 15, further comprising an optical lens on the second body and the transmissive resin layer,
wherein the optical lens is coupled to at least one of the first and second bodies.

### Claim 20 (depends on 15)

The light emitting device of claim 15, wherein the gap part is formed of a material identical to a material of the first body.
