Electronic device contact structures

• US 10,593,835 B2
• Filed: 05/24/2017
• Issued: 03/17/2020
• Est. Priority Date: 04/15/2011
• Status: Active Grant

• Current Assignee: Luminus Devices Incorporated (Sanan Optoelectronics Company Limited)
• Original Assignee: Luminus Devices Incorporated (Sanan Optoelectronics Company Limited)
• Inventors: Brown, Michael Gregory, Bertic, Yves, Duncan, Scott W., Lu, Hong, Rajan, Ravi, Woodhouse, John, Yun, Feng, Zhu, Hao
• Primary Examiner(s): Hargrove, Frederick B
• Application Number:
  US15/604,095
• Publication Number:
  US 20180076357A1
• Time in Patent Office: 1,028 Days
• CPC Class Codes: H01L 33/38 with a particular shape
• 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

Abstract

Electronic devices involving contact structures, and related components, systems and methods associated therewith are described. The contact structures are particularly suitable for use in a variety of light-emitting devices, including LEDs.

Claims

1. A light-emitting device, comprising:

an emission surface bound by a periphery;

a first electrically conductive pad layer disposed along a first portion of the periphery of the emission surface;

a second electrically conductive pad layer disposed along a second portion of the periphery of the emission surface and opposed to the first electrically conductive pad layer;

a third electrically conductive pad layer disposed along a third portion of the periphery of the emission surface;

a fourth electrically conductive pad layer disposed along a fourth portion of the periphery of the emission surface and opposed to the third electrically conductive pad layer;

a plurality of electrically conductive contact members connecting the first and third electrically conductive pad layers; and

a plurality of electrically conductive contact members connecting the second and fourth electrically conductive pad layers,

wherein the electrically conductive contact members have first ends and second ends defining lengths of the electrically conductive contact members, and the lengths of the electrically conductive contact members are non-linear.

2. The light-emitting device of claim 1, wherein the lengths of at least a portion of the electrically conductive contact members form at least one angle of between about 60°

and about 120°

.

3. The light-emitting device of claim 1, wherein the lengths of at least a portion of the electrically conductive contact members are curved.

4. The light-emitting device of claim 1, comprising:

a first contact member having a first length and a first width and a first height, and

a second contact member comprising;

a second length that is longer than the first length, and

a second width that is wider than the first width and/or a second height that is taller than the first height.

5. The light-emitting device of claim 4, comprising;

a third contact member with a third length that is longer than the second length, and

a third width that is wider than the second width and/or a third height that is taller than the second height.

6. The light-emitting device of claim 1, comprising:

a first contact member having a non-linear length, and

a second contact member having a non-linear length, wherein

the shortest distance between the first contact member and the geometric center of the emission surface is shorter than the shortest distance between the second contact member and the geometric center of the emission surface, and

the width of the first contact member is greater than the width of the second contact member and/or the height of the first contact member is greater than the height of the second contact member.

7. The light-emitting device of claim 1, wherein the light-emitting device comprises a light-emitting diode.