Light-emitting device

• US 9,230,945 B2
• Filed: 09/09/2013
• Issued: 01/05/2016
• Est. Priority Date: 11/22/2012
• Status: Active Grant

• Current Assignee: Lextar Electronics Corporation
• Original Assignee: Lextar Electronics Corporation
• Inventors: Yang, Li-Cheng
• Primary Examiner(s): Cole, Brandon S
• Application Number:
  US14/020,994
• Publication Number:
  US 20140139144A1
• Time in Patent Office: 848 Days
• Field of Search: 315291-311
• US Class Current: 1/1
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 24/97 the devices being connected to a common substrate, e.g. interposer, said common substrate being separable into individual assemblies after connecting
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/12035 Zener diode
• CPC Class Codes: H01L 2924/12041 LED
• CPC Class Codes: H01L 2924/12042 LASER

Abstract

A light-emitting device is provided. The light-emitting device comprises a substrate and a light-emitting element. The substrate comprises a first variable resistor, a second variable resistor, an insulation portion and a carrier. The insulation portion is located between the first variable resistor and the second variable resistor. The carrier is surrounded by the insulation portion, and the light-emitting element is disposed on the carrier. The first variable resistor, the second variable resistor and the insulation portion respectively penetrate the substrate.

Claims

1. A light-emitting device, comprising:

a substrate formed by a conductive material and having an upper surface and a lower surface opposite to the upper surface, the substrate comprising;

a first variable resistor and a second variable resistor, each of the first variable resistor and the second variable resistor comprising a metal oxide;

an insulation portion located between the first variable resistor and the second variable resistor; and

a carrier surrounded by the insulation portion; and

a light-emitting element disposed on the carrier and the upper surface;

wherein, the first variable resistor, the second variable resistor and the insulation portion respectively penetrate to the lower surface from the upper surface of the substrate.

2. The light-emitting device according to claim 1, wherein the substrate has a first edge lateral surface and a second edge lateral surface opposite to the first edge lateral surface, two ends of the first variable resistor are exposed from the first edge lateral surface and the second edge lateral surface respectively, and two ends of the second variable resistor are exposed from the first edge lateral surface and the second edge lateral surface respectively.

3. The light-emitting device according to claim 1, wherein the substrate has a third edge lateral surface and a fourth edge lateral surface opposite to the third edge lateral surface, a first electrode is defined between the third edge lateral surface and the first variable resistor, a second electrode is defined between the fourth edge lateral surface and the second variable resistor, and the light-emitting device further comprises:

a first conductive wire connecting the light-emitting element and the first electrode; and

a second conductive wire connecting the light-emitting element and the second electrode.

4. The light-emitting device according to claim 1, wherein the first variable resistor and the second variable resistor further comprise bismuth (Bi).

5. The light-emitting device according to claim 1, wherein the metal oxide is zinc oxide.

6. The light-emitting device according to claim 1, wherein the insulation portion is a closed ring-shaped insulation portion.

7. The light-emitting device according to claim 1, wherein the conductive material is made from metal or graphite.