Multi-pin light-emitting diode device

• US 20050173713A1
• Filed: 12/23/2004
• Published: 08/11/2005
• Est. Priority Date: 02/06/2004
• Status: Abandoned Application

• Current Assignee: Opto Tech Corporation (OptoTech Corp.)
• Original Assignee: Opto Tech Corporation (OptoTech Corp.)
• Inventors: Lin, San Bao, Lin, Ming-Der
• Application Number:
  US11/019,169
• Publication Number:
  US 20050173713A1
• Time in Patent Office: Days
• US Class Current: 257/81
• CPC Class Codes: H01L 2224/32245 the item being metallic
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48137 the bodies being arranged next to each other, e.g. on a common substrate
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2224/48257 connecting the wire to a die pad of the item
• CPC Class Codes: H01L 2224/49107 on the semiconductor or solid-state body
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• 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 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• 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 2924/12032 Schottky diode
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
• CPC Class Codes: H01L 33/642 characterized by the shape

Abstract

A light-emitting diode (LED) device with at least three pins, mainly comprises an accommodating base provided therein with an electrostatic discharge protection device and at least one light-emitting die adhered onto this electrostatic discharge protection device in the manner of flip-chip, in such a way that a first electrode and a second electrode of the light-emitting die are electrically connected to a first protective electrode and a second protective electrode of the electrostatic discharge protection device, respectively and correspondingly. The accommodating base is connectedly provided with at least one heat-dissipating pin, and at the side of this accommodating base, a first electro-conductive pin and a second electro-conductive pin are provided, such that the first protective electrode and the second protective electrode are electrically connected thereto, respectively. As such, not only the function of prevention of electrostatic damage and high heat-dissipation efficiency may be provided, but also enhanced brightness of the LED device may be obtained.

Claims

1. A multi-pin light-emitting diode (LED) device, comprising:

an electrostatic discharge protection device having a first protective electrode and a second protective electrode;

at least one light-emitting die fixedly provided on said electrostatic discharge protection device, a first electrode and a second electrode of each of said light-emitting dies electrically connected to said first protective electrode and said second protective electrode, correspondingly and respectively;

an accommodating base for fixing said light-emitting die as well as said electrostatic discharge protection device, and connectedly provided at the bottom thereof with at least one heat-dissipating pin;

at least one first electro-conductive pin electrically connected to said first protective electrode; and

at least one second electro-conductive pin electrically connected to said second protective electrode.

2. The LED device according to claim 1, wherein said light-emitting die is adhered onto said electrostatic discharge protection device in the manner of flip-chip.

3. The LED device according to claim 1, wherein said electrostatic discharge protection device is fixedly provided on said accommodating base further by means of a material selected from the group consisting of solder paste, silver adhesive, thermally conductive adhesive, AuSi, AuSn, and the combination thereof.

4. The LED device according to claim 1, further comprising a protective layer allowed to house said electrostatic discharge protection device, said light-emitting die, said accommodating base, a part of said first electro-conductive pin, a part of said second electro-conductive pin, and a part of said heat-dissipating pin.

5. The LED device according to claim 4, wherein said protective layer is made from a material selected from the group consisting of glass, plastic, epoxy, and the combination thereof.

6. The LED device according to claim 1, wherein said first protective electrode and said second protective electrode are electrically connected to said first electro-conductive pin and said second electro-conductive pin, correspondingly, via a first lead wire and a second lead wire, respectively.

7. The LED device according to claim 1, wherein said electrostatic discharge protection device is selected from the group consisting of an electrostatic discharge (ESD) protection integrated circuit (IC), Schottky barrier diode, zener diode, voltage limiter, equivalent diode, and the combination thereof.

8. The LED device according to claim 1, wherein said heat-dissipating pin is connectedly provided at the side of said accommodating base.

9. The LED device according to claim 1, wherein said heat-dissipating pin is also selectively combined with one of said first electro-conductive pin and said second electro-conductive pin as a unit.

10. The LED device according to claim 1, wherein said accommodating base is only connectedly provided with one single heat-dissipating pin.

11. A multi-pin light-emitting diode (LED) device, comprising:

an accommodating base connectedly provided at least one heat-dissipating pin;

at least one light-emitting die fixedly provided on said accommodating base, each at least having a first electrode and a second electrode;

at least one first electro-conductive pin electrically connected to said first protective electrode; and

at least one second electro-conductive pin electrically connected to said second protective electrode.