基本信息:
- 专利标题： TWO STEP PHOSPHOR DEPOSITION TO MAKE A MATRIX ARRAY
- 申请号：US17418744 申请日：2019-12-17
- 公开(公告)号：US20220059736A1 公开(公告)日：2022-02-24
- 发明人： Marcel Rene BOHMER , Jacques Heuts , Ken SHIMIZU , Peter Josef SCHMIDT
- 申请人： Lumileds LLC
- 申请人地址： US CA San Jose
- 专利权人： Lumileds LLC
- 当前专利权人： Lumileds LLC
- 当前专利权人地址： US CA San Jose
- 优先权： EP19154680.3 20190131
- 国际申请： PCT/EP19/85595 WO 20191217
- 主分类号： H01L33/50
- IPC分类号： H01L33/50 ; H01L25/075 ; H01L33/60
摘要：
A method of fabricating closely spaced pcLEDs (100) arranged in a matrix array (200) of perpendicular rows and columns comprises an initial phosphor deposition step in which phosphor (803, 905) is deposited at alternating locations (pixels) in the matrix array in a checkerboard pattern, so that the locations (504) in the array at which phosphor (803, 905) is deposited are not adjacent to each other. In a subsequent phosphor deposition step phosphor is deposited at the alternating locations at which phosphor was not deposited in the first deposition step. In between the two phosphor deposition steps, reflective or scattering structures (606) may be fabricated on sidewalls of the phosphor pixels to optically isolate pcLEDs in the resulting array from each other