Invention Grant
- Patent Title: Method and system for dual stretching of wafers for isolated segmented chip scale packages
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Application No.: US16670503Application Date: 2019-10-31
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Publication No.: US10672630B2Publication Date: 2020-06-02
- Inventor: Arjen Gerben Van der Sijde , Nicola Bettina Pfeffer , Brendan Moran
- Applicant: Lumileds LLC
- Applicant Address: US CA San Jose
- Assignee: Lumileds LLC
- Current Assignee: Lumileds LLC
- Current Assignee Address: US CA San Jose
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H01L21/67
- IPC: H01L21/67 ; H01L23/00 ; H01L21/78 ; H01L27/15 ; H01L33/38 ; H01L33/60

Abstract:
Described herein is a method and system for dual stretching of wafers to create isolated segmented chip scale packages. A wafer having an array of light-emitting diodes (LEDs) is scribed into LED segments, where each LED segment includes a predetermined number of LEDs. The scribed wafer is placed on a stretchable substrate or tape. The tape is stretched and a layer of optically material is placed in the separation gaps. The stretched wafer is scribed on a LED level. The tape is stretched and another layer of optically opaque material is placed in the separation gaps. The same or different optically opaque material can be used for the layers. The two layers of optically opaque material are formed to provide electrical connectivity between the LEDs in each LED segment. In an implementation, each segment or LED is individually addressable.
Public/Granted literature
- US20200066558A1 METHOD AND SYSTEM FOR DUAL STRETCHING OF WAFERS FOR ISOLATED SEGMENTED CHIP SCALE PACKAGES Public/Granted day:2020-02-27
Information query
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