公开(公告)号：US20170137328A1

公开(公告)日：2017-05-18

申请号：US15320110

申请日：2015-06-17

Applicant: OSRAM SYLVANIA INC.

Inventor： John F. Kelso ,  Alan Lenef ,  Alan Piquette

IPC: C04B37/00 ,  B32B37/06 ,  B32B7/12 ,  C09K11/77 ,  B32B18/00

CPC classification number: C04B37/005 ,  B32B7/12 ,  B32B18/00 ,  B32B37/06 ,  B32B2307/40 ,  B32B2315/02 ,  B32B2551/00 ,  C04B37/001 ,  C04B2235/5445 ,  C04B2237/062 ,  C04B2237/343 ,  C04B2237/59 ,  C04B2237/708 ,  C09K11/7774 ,  H01L33/501 ,  H01L33/502 ,  H01L33/507 ,  H01L2933/0041 ,  H01S5/005

Abstract: There is herein described a method for forming a ceramic wavelength converter assembly which achieves a direct bonding of an alumina-based ceramic wavelength converter to an alumina-based ceramic substrate such as polycrystalline or sapphire. The method comprises applying a silica-containing layer between the converter and the substrate and then applying heat to bond the converter to the substrate to form the ceramic wavelength converter assembly. Because direct bonding is achieved, the ceramic wavelength converter may operate at much higher incident light powers than conventional silicone glue-bonded converters.

公开(公告)号：US20180171508A1

公开(公告)日：2018-06-21

申请号：US15572486

申请日：2016-04-28

Applicant: OSRAM SYLVANIA Inc.

Inventor： John Kelso ,  Alan Piquette ,  David Johnston

IPC: C30B29/28 ,  C30B29/40 ,  C30B1/02 ,  H01L33/50

CPC classification number: C30B29/28 ,  C04B35/16 ,  C04B35/44 ,  C04B35/581 ,  C04B35/584 ,  C04B35/587 ,  C04B35/597 ,  C04B35/64 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/3418 ,  C04B2235/6021 ,  C04B2235/6022 ,  C04B2235/6025 ,  C04B2235/6027 ,  C04B2235/604 ,  C04B2235/6582 ,  C04B2235/764 ,  C09K11/7721 ,  C09K11/7774 ,  C30B1/02 ,  C30B29/34 ,  C30B29/38 ,  C30B29/406 ,  H01L33/502 ,  H01L2933/0041

Abstract: There is herein described a method of making a single crystal wavelength conversion element from a polycrystalline wavelength conversion element, a single crystal wavelength conversion element, and a light source containing same. By making the single crystal wavelength conversion element from a polycrystalline wavelength conversion element, the method provides greater flexibility in creating single crystal wavelength conversion elements as compared to melt grown methods for forming single crystals. Advantages may include higher activator contents, forming more complex shapes without machining, providing a wider range of possible activator gradients and higher growth rates at lower temperatures.