Invention Grant
- Patent Title: Light emitting device with reduced EPI stress
- Patent Title (中): 具有降低EPI应力的发光器件
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Application No.: US13878837Application Date: 2011-10-07
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Publication No.: US09093630B2Publication Date: 2015-07-28
- Inventor: Frederic Stephane Diana , Yajun Wei , Stefano Schiaffino , Brendan Jude Moran
- Applicant: Frederic Stephane Diana , Yajun Wei , Stefano Schiaffino , Brendan Jude Moran
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- International Application: PCT/IB2011/054430 WO 20111007
- International Announcement: WO2012/049602 WO 20120419
- Main IPC: H01L33/00
- IPC: H01L33/00 ; H01L33/64 ; H01L33/40 ; H01L33/62 ; H01L23/495

Abstract:
Elements are added to a light emitting device to reduce the stress within the light emitting device caused by thermal cycling. Alternatively, or additionally, materials are selected for forming contacts within a light emitting device based on their coefficient of thermal expansion and their relative cost, copper alloys being less expensive than gold, and providing a lower coefficient of thermal expansion than copper. Elements of the light emitting device may also be structured to distribute the stress during thermal cycling.
Public/Granted literature
- US20130193476A1 LIGHT EMITTING DEVICE WITH REDUCE EPI STRESS Public/Granted day:2013-08-01
Information query
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