Electronic device contact structures

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.

1 . A light-emitting device, comprising:
 an emission surface bound by a periphery;   a first electrically conductive pad portion disposed along a first portion of the periphery of the emission surface;   a second electrically conductive pad portion disposed along a second portion of the periphery of the emission surface;   a bus bar connecting the first and second electrically conductive pad portions; and   a plurality of electrically conductive contact members connected to and extending outward from the bus bar.   
     
     
         2 . The light-emitting device of  claim 1 , wherein first electrically conductive pad portion is opposed to the second electrically conductive pad portion. 
     
     
         3 . The light-emitting device of  claim 1 , wherein the width of the bus bar is at least about 5 times greater than the widths of the electrically conductive contact members. 
     
     
         4 . The light-emitting device of  claim 1 , wherein the lengths of the electrically conductive contact members form smallest angles of at least about 75° with the length of the bus bar. 
     
     
         5 . The light-emitting device of  claim 1 , wherein the electrically conductive contact members are substantially perpendicular to the bus bar. 
     
     
         6 . The light-emitting device of  claim 1 , wherein the light-emitting device comprises a light-emitting diode. 
     
     
         7 . The light-emitting device of  claim 1 , wherein the emission surface has a surface area of at least about 0.25 mm 2 . 
     
     
         8 . The light-emitting device of  claim 1 , wherein the light-emitting device comprises a length and/or a width of at least about 0.5 mm. 
     
     
         9 . The light-emitting device of  claim 1 , further comprising a second bus bar connecting the first and second electrically conductive pad portions. 
     
     
         10 . The light-emitting device of  claim 9 , wherein the first bus bar connects a first end of the first electrically conductive pad to a first end of the second electrically conductive pad, and the second bus bar connects a second end of the first electrically conductive pad to a second end of the second electrically conductive pad. 
     
     
         11 . The light-emitting device of  claim 1 , wherein the first portion of the periphery of the emission surface corresponds to an edge of a substantially rectangular emission surface. 
     
     
         12 . A light-emitting device, comprising:
 an emission surface bound by a periphery;   a first electrically conductive pad portion disposed along a first portion of the periphery of the emission surface;   a second electrically conductive pad portion disposed along a second portion of the periphery of the emission surface and opposed to the first electrically conductive pad portion;   a third electrically conductive pad portion disposed along a third portion of the periphery of the emission surface;   a fourth electrically conductive pad portion disposed along a fourth portion of the periphery of the emission surface and opposed to the third electrically conductive pad portion;   a plurality of electrically conductive contact members connecting the first and third electrically conductive pad portions; and   a plurality of electrically conductive contact members connecting the second and fourth electrically conductive pad portions,   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.   
     
     
         13 . The light-emitting device of  claim 12 , 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°. 
     
     
         14 . The light-emitting device of  claim 12 , wherein the lengths of at least a portion of the electrically conductive contact members are curved. 
     
     
         15 . The light-emitting device of  claim 12 , 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. 
   
     
     
         16 . The light-emitting device of  claim 15 , 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.   
     
     
         17 . The light-emitting device of  claim 12 , 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.   
     
     
         18 . The light-emitting device of  claim 12 , wherein the light-emitting device comprises a light-emitting diode.