Solid state light emitting device and method of manufacturing a solid state light emitting device
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United States of America Patent
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Nov 7, 2017
Grant Date -
Nov 10, 2016
app pub date -
Nov 6, 2014
filing date -
Nov 19, 2013
priority date (Note) -
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Abstract
A solid state light emitting device includes a light emitting stack (20), a metallization (30), comprising a guard layer (36) of metal, and a dielectric layer (50) over the guard layer (36) of the metallization. During subsequent processing delamination and/or cracking may occur at the edges of the devices, sometimes referred to as die edge defects. To address these defects a plurality of stress-relief elements (62, 64) and/or anchor elements may be provided in an edge region of the metallization and/or dielectric layer for reducing delamination. The stress-relief elements (62, 64) are formed by regions of reduced thickness or increased thickness in the guard layer (36).
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