发明名称 |
OPTICAL ARRAY WITH IMPROVED CONTACT STRUCTURE |
摘要 |
A high density array of light emitting diodes for visual display and imaging purposes. The array is mounted on a thermally and electrically conducting medium such as an aluminum block. The block, in one embodiment, is configured to permit a supplementary cooling liquid to be circulated through it. Typically, such LED arrays are fabricated by forming a plurality of p-type islands in n-type host semiconductor material. Each p-type island has an individually addressable contact and a common n-type contact i s made to the aluminum block by, for example an electrically conductive epoxy. In operatio n the connection between the carrier and array may be lost due to a temperature differential between the two components. The present invention avoids this problem by providing a separate connection in parallel with or in place of the common n-type contac t.
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申请公布号 |
CA2352986(A1) |
申请公布日期 |
2002.01.26 |
申请号 |
CA20012352986 |
申请日期 |
2001.07.12 |
申请人 |
OPTOTEK LTD. |
发明人 |
WOODFIELD, RICHARD;WAREBERG, P. GUNNAR;KENNEDY, DAVID I. |
分类号 |
B41J2/45;H01L27/15;(IPC1-7):H05B33/06;H01L33/00 |
主分类号 |
B41J2/45 |
代理机构 |
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