公开(公告)号：US20200212270A1

公开(公告)日：2020-07-02

申请号：US16232884

申请日：2018-12-26

申请人： Lumileds Holding B.V.

发明人： Marcel Rene BOHMER ,  Jacques Heuts ,  Ken SHIMIZU ,  Peter SCHMIDT

IPC分类号： H01L33/50 ,  H01L25/075 ,  H01L33/60

摘要： A method of fabricating closely spaced pcLEDs arranged in a matrix array of perpendicular rows and columns comprises an initial phosphor deposition step in which phosphor is deposited at alternating locations (pixels) in the matrix array in a checkerboard pattern, so that the locations in the array at which phosphor 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 may be fabricated on sidewalls of the phosphor pixels to optically isolate pcLEDs in the resulting array from each other.

公开(公告)号：US10930825B2

公开(公告)日：2021-02-23

申请号：US16232884

申请日：2018-12-26

申请人： Lumileds Holding B.V.

发明人： Marcel Rene Bohmer ,  Jacques Heuts ,  Ken Shimizu ,  Peter Schmidt

IPC分类号： H01L33/50 ,  H01L25/075 ,  H01L33/60

摘要： A method of fabricating closely spaced pcLEDs arranged in a matrix array of perpendicular rows and columns comprises an initial phosphor deposition step in which phosphor is deposited at alternating locations (pixels) in the matrix array in a checkerboard pattern, so that the locations in the array at which phosphor 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 may be fabricated on sidewalls of the phosphor pixels to optically isolate pcLEDs in the resulting array from each other.