发明名称 |
LASER ROUGHENING TO IMPROVE LED EMISSIONS |
摘要 |
An improved method of forming a LED with a roughened surface is described. Traditional methods of roughening a LED surface utilizes strong etchants that require sealing or protecting exposed areas of the LED. The described method uses a focused laser to separate the LED from the substrate, and a second laser to roughen the LED surface thereby avoiding the use of strong etchants. A mild etchant may be used on the laser roughened LED surface to remove unwanted metals.
|
申请公布号 |
US2010151602(A1) |
申请公布日期 |
2010.06.17 |
申请号 |
US20080337491 |
申请日期 |
2008.12.17 |
申请人 |
PALO ALTO RESEARCH CENTER INCORPORATED |
发明人 |
KNOLLENBERG CLIFFORD F.;BOUR DAVID P.;CHUA CHRISTOPHER L.;LU JENG PING |
分类号 |
H01L21/268 |
主分类号 |
H01L21/268 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|