Invention Publication
- Patent Title: TEXTURED LUMIPHORE LAYER TO IMPROVE LIGHT EXTRACTION FOR LIGHT-EMITTING DIODE CHIPS AND RELATED METHODS
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Application No.: US18085672Application Date: 2022-12-21
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Publication No.: US20240213401A1Publication Date: 2024-06-27
- Inventor: David Suich , Michael Check , Colin Blakely , Robert Wilcox , Andre Pertuit
- Applicant: CreeLED, Inc.
- Applicant Address: US NC Durham
- Assignee: CreeLED, Inc.
- Current Assignee: CreeLED, Inc.
- Current Assignee Address: US NC Durham
- Main IPC: H01L33/00
- IPC: H01L33/00 ; H01L21/304 ; H01L21/324

Abstract:
The present disclosure relates to solid-state lighting devices including light-emitting diodes (LEDs) and more particularly to light-extraction features for LED chips and packages and methods of forming the light-extraction features on a cover structure over the LED chip to improve light extraction from the LED chip. A number of sublayers that are embedded with lumiphoric materials can be pressed in a mold that includes texturing that imprints the light-extraction features in the sublayers. The sublayers can then be baked to form a cover structure that can be placed over the LED chip. In other embodiments, the sublayers can be baked to form the cover structure, which can then be heated to above a transition temperature of the cover structure, then pressed in a textured mold to form the light-extraction features, and then placed over the LED chip.
Information query
IPC分类: