Invention Grant
- Patent Title: Method for fabricating (LED) dice using laser lift-off from a substrate to a receiving plate
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Application No.: US17868949Application Date: 2022-07-20
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Publication No.: US11862755B2Publication Date: 2024-01-02
- Inventor: Chen-Fu Chu , Shih-Kai Chan , Yi-Feng Shih , David Trung Doan , Trung Tri Doan , Yoshinori Ogawa , Kohei Otake , Kazunori Kondo , Keiji Ohori , Taichi Kitagawa , Nobuaki Matsumoto , Toshiyuki Ozai , Shuhei Ueda
- Applicant: SemiLEDs Corporation , SHIN-ETSU CHEMICAL CO., LTD.
- Applicant Address: TW Chu-Nan
- Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agent Stephen A. Gratton
- Main IPC: H01L33/00
- IPC: H01L33/00 ; H01L33/20 ; H01L33/44

Abstract:
A method for fabricating light emitting diode (LED) dice includes the steps of: providing a substrate, and forming a plurality of die sized semiconductor structures on the substrate. The method also includes the steps of providing a receiving plate having an elastomeric polymer layer, placing the substrate and the receiving plate in physical contact with an adhesive force applied by the elastomeric polymer layer, and performing a laser lift-off (LLO) process by directing a uniform laser beam through the substrate to the semiconductor layer at an interface with the substrate to lift off the semiconductor structures onto the elastomeric polymer layer. During the laser lift-off (LLO) process the elastomeric polymer layer functions as a shock absorber to reduce momentum transfer, and as an adhesive surface to hold the semiconductor structures in place on the receiving plate.
Public/Granted literature
- US20220359785A1 Method For Fabricating (LED) Dice Using Laser Lift-Off From A Substrate To A Receiving Plate Public/Granted day:2022-11-10
Information query
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