# US 10,374,136 B2 · Light emitting apparatus

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- Number: US 10,374,136 B2
- Document ID: US10374136B2
- Status: Granted
- Kind: B2
- Application number: 16/143,383
- Filed: 2018-09-26
- Published: 2019-01-24
- Granted: 2019-08-06
- Earliest claimed: 2013-03-14
- Assignees: Nichia Corporation
- Applicants: Nichia Corporation
- Inventors: Ryohei Yamashita; Ryoichi Yoshimoto
- Web page: https://patentgrep.com/patent/US10374136B2

## CPC

- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- H10H 20/8506: {Containers}
- H10H 20/852: Encapsulations
- H10H 20/853: characterised by their shape
- H10W 70/40: Leadframes
- H10W 70/421: {Shapes or dispositions}
- H10W 70/464: {Additional interconnections in combination with leadframes}
- H10H 20/036: {of packages}
- H10H 20/0364: {of interconnections}
- H10W 70/424: {Cross-sectional shapes (H10W70/481 takes precedence)}
- H10W 70/481: {for devices being provided for in groups H10D8/00 - H10D48/00}
- H10W 72/0198: {batch processes}
- H10W 72/325: {Die-attach connectors having a filler embedded in a matrix}
- H10W 72/352: {comprising metals or metalloids, e.g. solders}
- H10W 72/354: {comprising polymers}
- H10W 72/522: {Multilayered bond wires, e.g. having a coating concentric around a core}
- H10W 72/552: {comprising metals or metalloids, e.g. silver}
- H10W 72/5522: {comprising gold [Au]}
- H10W 72/5524: {comprising aluminium [Al]}
- H10W 72/5525: {comprising copper [Cu]}
- H10W 72/555: {of outermost layers of multilayered bond wires, e.g. material of a coating}
- H10W 72/884: {Die-attach connectors and bond wires}
- H10W 74/00: Encapsulations, e.g. protective coatings
- H10W 74/127: {characterised by arrangements for sealing or adhesion}
- 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 emitting apparatus includes a positive lead terminal and a negative lead terminal, each of which includes a first main surface, a second main surface, and an end surface including a first recessed surface area extending from a first point of the first main surface in cross section, and a second recessed surface area extending from a second point of the second main surface in cross section. A distance between a first part of the end surface of the positive lead terminal and a second part of the end surface of the negative lead terminal than a first distance between the first points of the positive lead terminal and the negative lead terminal and a second distance between the second points of the positive lead terminal and the negative lead terminal. The first part and the second part are separated from the first point and the second point.

## Claims

### Claim 1

A light emitting apparatus comprising:
a light emitting device;
a light emitting device mount on which said light emitting device is mounted, said light emitting device mount comprising:
a positive lead terminal and a negative lead terminal, each of which includes
a first main surface,
a second main surface opposite to said first main surface in a thickness direction of each of said positive lead terminal and said negative lead terminal, and
an end surface which is provided between said first main surface and said second main surface, said end surface including
a first recessed surface area, and
a second recessed surface area between said positive lead terminal and said negative lead terminal facing each other, said first recessed surface area extending from a first point of said first main surface in cross section, said second recessed surface area extending from a second point of said second main surface in cross section; and
a resin portion positioned at least between said end surface of said positive lead terminal and said end surface of said negative lead terminal,
wherein a distance between a first part of said end surface of said positive lead terminal and a second part of said end surface of said negative lead terminal is smaller than a first distance between said first point of said positive lead terminal and said first point of said negative lead terminal and smaller than a second distance between said second point of said positive lead terminal and said second point of said negative lead terminal as viewed in cross section, said first part being separated from said first point of said end surface of said positive lead terminal and said second point of said end surface of said positive lead terminal, said second part being separated from said first point of said end surface of said negative lead terminal and said second point of said end surface of said negative lead terminal, and
wherein a length of said second recessed surface area is longer than a length of said first recessed surface area as viewed in cross section.

### Claim 2 (depends on 1)

The light emitting apparatus according to claim 1,
wherein one of said positive lead terminal and said negative lead terminal includes a hanger lead cutting trace exposed from said resin portion at least at one side surface of said light emitting apparatus, and
wherein said hanger lead cutting trace is arranged in an area close to said at least one side surface of said resin portion and away from said end surface including said first recessed surface area and said second recessed surface area.

### Claim 3 (depends on 1)

The light emitting apparatus according to claim 1,
wherein one of said positive lead terminal and said negative lead terminal includes a hanger lead cutting trace exposed from said resin portion at least at one side surface of said light emitting apparatus, and
wherein an exposed surface of said hanger lead cutting trace is arranged higher than said second recessed surface area.

### Claim 4 (depends on 1)

The light emitting apparatus according to claim 1,
wherein one of said positive lead terminal and said negative lead terminal includes hanger lead cutting traces, said hanger lead cutting trace being exposed from said resin portion at each of three side surfaces of said light emitting apparatus, and
wherein another of said positive lead terminal and said negative lead terminal includes a hanger lead cutting trace exposed from said resin portion at one side surface of said light emitting apparatus.

### Claim 5 (depends on 1)

The light emitting apparatus according to claim 1,
wherein said light emitting apparatus has an elongated rectangular shape, and
wherein a part of each side surface area of said positive lead terminal and said negative lead terminal in an elongated direction is arranged away from said end surface including said first recessed surface area and said second recessed surface area.

### Claim 6 (depends on 1)

The light emitting apparatus according to claim 1,
wherein said first distance is smaller than said second distance.

### Claim 7 (depends on 1)

The light emitting apparatus according to claim 1,
wherein said light emitting apparatus device mount includes longer side surfaces and shorter side surfaces in a plan view, and
wherein said longer side surface has a first hanger lead cutting trace at a substantially center thereof, said first hanger lead cutting trace being a part of one of said positive and negative lead terminals exposed from said resin portion at a side surface of said light emitting apparatus device.

### Claim 8 (depends on 7)

The light emitting apparatus according to claim 7,
wherein said shorter side surface has a second hanger lead cutting trace at a substantially center thereof.

### Claim 9 (depends on 1)

The light emitting apparatus according to claim 1,
wherein said light emitting apparatus defines a recessed part formed by each part of said positive lead terminal and said negative lead terminal, and said resin portion, and
wherein said light emitting device is mounted on a bottom surface of said recessed part.

### Claim 10 (depends on 1)

The light emitting apparatus according to claim 1,
wherein one of said positive lead terminal and said negative lead terminal has a longer length than another of said positive lead terminal and said negative lead terminal in a direction substantially parallel to said first main surface in cross section.

### Claim 11 (depends on 1)

The light emitting apparatus device mount according to claim 1,
wherein said positive lead terminal and said negative lead terminal have substantially the same width in a plan view.