公开(公告)号：US10529696B2

公开(公告)日：2020-01-07

申请号：US15399729

申请日：2017-01-05

Applicant: Cree, Inc.

Inventor： John Edmond ,  Matthew Donofrio ,  Jesse Reiherzer ,  Peter Scott Andrews ,  Joseph G. Clark ,  Kevin Haberern

IPC: H01L25/075 ,  H01L27/15 ,  H01L33/50 ,  H01L33/56 ,  H01L33/58 ,  H01L33/60 ,  H01L33/62 ,  H01L33/46 ,  H01L25/00 ,  H01L33/00 ,  H01L33/38 ,  H01L33/44

Abstract: At least one array of LEDs (e.g., in a flip chip configuration) is supported by a substrate having a light extraction surface overlaid with at least one lumiphoric material. Light segregation elements registered with gaps between LEDs are configured to reduce interaction between emissions of different LEDs and/or lumiphoric material regions to reduce scattering and/or optical crosstalk, thereby preserving pixel-like resolution of the resulting emissions. Light segregation elements may be formed by mechanical sawing or etching to define grooves or recesses in a substrate, and filling the grooves or recesses with light-reflective or light-absorptive material. Light segregation elements external to a substrate may be defined by photolithographic patterning and etching of a sacrificial material, and/or by 3D printing.

公开(公告)号：US20190273070A1

公开(公告)日：2019-09-05

申请号：US16414162

申请日：2019-05-16

Applicant: Cree, Inc.

Inventor： John Edmond ,  Matthew Donofrio ,  Jesse Reiherzer ,  Peter Scott Andrews ,  Joseph G. Clark ,  Kevin Haberern

IPC: H01L25/075 ,  H01L33/50 ,  H01L27/15 ,  H01L33/46 ,  H01L25/00 ,  H01L33/62 ,  H01L33/60 ,  H01L33/58

Abstract: At least one array of LEDs (e.g., in a flip chip configuration) is supported by a substrate having a light extraction surface overlaid with at least one lumiphoric material. Light segregation elements registered with gaps between LEDs are configured to reduce interaction between emissions of different LEDs and/or lumiphoric material regions to reduce scattering and/or optical crosstalk, thereby preserving pixel-like resolution of the resulting emissions. Light segregation elements may be formed by mechanical sawing or etching to define grooves or recesses in a substrate, and filling the grooves or recesses with light-reflective or light-absorptive material. Light segregation elements external to a substrate may be defined by photolithographic patterning and etching of a sacrificial material, and/or by 3D printing.