发明名称 |
A SOLID STATE LIGHT EMITTING DEVICE AND METHOD OF MANUFACTURING A SOLID STATE LIGHT EMITTING DEVICE |
摘要 |
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). |
申请公布号 |
US2016329467(A1) |
申请公布日期 |
2016.11.10 |
申请号 |
US201415036879 |
申请日期 |
2014.11.06 |
申请人 |
KONINKLIJKE PHILIPS N.V. |
发明人 |
Noijen Sander Petrus Martinus;Engelen Roy Antoin Bastiaan;Sweegers Norbertus Antonius Maria;de Samber Marc Andre |
分类号 |
H01L33/38;H01L33/00 |
主分类号 |
H01L33/38 |
代理机构 |
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代理人 |
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主权项 |
1. A solid state light emitting device, comprising:
a light emitting stack of a plurality of semiconductor layers; a metallization on the light emitting stack including at least one metallization layer and comprising a guard layer of metal; a dielectric layer on the guard layer of the metallization; a plurality of stress-relief elements and/or anchor elements in an edge region of the metallization and/or dielectric layer, the edge region being the region of the solid state light emitting device adjacent to the edge of the solid state light emitting device, wherein the stress-relief elements are formed by regions of increased thickness or reduced thickness in the guard layer. |
地址 |
Eindoven NL |