Light-emitting structures

• US 7,332,861 B2
• Filed: 02/05/2004
• Issued: 02/19/2008
• Est. Priority Date: 02/05/2004
• Status: Expired due to Fees

• Current Assignee: General LED, Inc.
• Original Assignee: AgiLight Incorporated (General LED, Inc.)
• Inventors: Ratcliffe, William R.
• Primary Examiner(s): Patel; Nimeshkumar D.
• Assistant Examiner(s): PERRY, ANTHONY T
• Application Number:
  US10/773,352
• Publication Number:
  US 20050174049A1
• Time in Patent Office: 1,475 Days
• Field of Search: 313/506, 257/99, 362/800
• US Class Current: 313/506
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 24/73 Means for bonding being of different types provided for in two or more of groups H01L24/10, H01L24/18, H01L24/26, H01L24/34, H01L24/42, H01L24/50, H01L24/63, H01L24/71
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 27/15 including semiconductor components having potential barriers, specially adapted for light emission
• 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 2924/12041 LED
• CPC Class Codes: H01L 2924/12044 OLED
• CPC Class Codes: H01L 2924/3011 Impedance
• CPC Class Codes: H01L 33/44 characterised by the coatings, e.g. passivation layer or anti-reflective coating
• CPC Class Codes: H01L 33/48 characterised by the semiconductor body packages
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

Light-emitting structures of reduced size are realized with combinations of light-emitting diodes, resistive and conductive films, and interconnect members. Other embodiments are provided which simplify fabrication and assembly.

Claims

1. A light-emitting structure, comprising:

a plurality of light-emitting diodes each having an anode and a cathode and each configured to emit a respective color of light;

a plurality of resistive members spaced over at least one of said anode and said cathode of each of said diodes wherein each of said resistive members has a different resistance;

at least one conductive contact carried on each of said resistive members; and

a conductive wire coupled through a contact to a respective one of the resistive members of each of said diodes to thereby form an interconnected string of diodes that will each carry a respective current when a voltage is applied to said wire.

2. The structure of claim 1, further including a conductive film inserted between each of said resistive members and its respective diode.

3. The structure of claim 1, wherein each of said resistive members has a resistivity and a cross section configured to realize its respective resistance.

4. The structure of claim 1, wherein said wire has a substantially flat cross section.

5. The structure of claim 1, wherein each resistive member comprises a resistive film.

6. The structure of claim 1, wherein each resistive member comprises a thin film resistor.

7. The structure of claim 1, wherein each resistive member comprises a thick film resistor.

8. The structure of claim 1, wherein said light-emitting diode is a semiconductor light-emitting diode.

9. The structure of claim 1, wherein said light-emitting diode is an organic light-emitting diode.

10. The structure of claim 1, wherein said light-emitting diode is a polymer light-emitting diode.