发明授权
US09224718B2 White light emitting diodes package containing plural blue light-emitting diodes
有权
包含多个蓝色发光二极管的白色发光二极管封装
- 专利标题: White light emitting diodes package containing plural blue light-emitting diodes
- 专利标题(中): 包含多个蓝色发光二极管的白色发光二极管封装
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申请号: US14077197申请日: 2013-11-11
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公开(公告)号: US09224718B2公开(公告)日: 2015-12-29
- 发明人: Tsung-Kan Cheng , Chia-Chin Chen , Chia-Pin Chang
- 申请人: Harvatek Corporation
- 申请人地址: TW Hsinchu
- 专利权人: Harvatek Corporation
- 当前专利权人: Harvatek Corporation
- 当前专利权人地址: TW Hsinchu
- 代理机构: CKC & Partners Co., Ltd.
- 优先权: TW102103155A 20130128
- 主分类号: H01L25/07
- IPC分类号: H01L25/07 ; H01L33/62 ; H01L27/15 ; H01L25/075 ; H01L33/50 ; H01L33/54 ; F21Y103/00
摘要:
A white light-emitting diode (LED) package containing plural blue LED chips is disclosed. The white LED package includes a transparent plate, plural blue LED chips bonded on a front surface of the transparent plate, a front fluorescent glue layer covering the plural blue LED chips, and a rear transparent glue layer covering a rear surface of the transparent plate and located at a position aligned with the front fluorescent glue layer. The edge of the rear transparent glue layer has an inclined lateral surface or a curved inclined lateral surface. Therefore, the light can be extracted from both front and rear surfaces, and the light extraction efficiency of the rear surface of the transparent plate is increased. The rear transparent glue layer can be replaced by a rear fluorescent glue layer to reduce the color temperature difference between the lights extracted from the front surface and the rear surface.
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