Invention Grant
- Patent Title: Flowable chips and methods for the preparation and use of same, and apparatus for use in the methods
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Application No.: US13196934Application Date: 2011-08-03
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Publication No.: US08926749B2Publication Date: 2015-01-06
- Inventor: Arvid Neil Arvidson , Terence Lee Horstman , Michael John Molnar , Chris Tim Schmidt , Roger Dale Spencer, Jr.
- Applicant: Arvid Neil Arvidson , Terence Lee Horstman , Michael John Molnar , Chris Tim Schmidt , Roger Dale Spencer, Jr.
- Applicant Address: US MI Hemlock
- Assignee: Hemlock Semi Conductor
- Current Assignee: Hemlock Semi Conductor
- Current Assignee Address: US MI Hemlock
- Agent Kim Choate; Matthew T. Fewkes; Catherine U. Brown
- Main IPC: C30B15/02
- IPC: C30B15/02 ; C30B29/06

Abstract:
A method for recharging a crucible with polycrystalline silicon comprises adding flowable chips to a crucible used in a Czochralski-type process. Flowable chips are polycrystalline silicon particles made from polycrystalline silicon prepared by a chemical vapor deposition process, and flowable chips have a controlled particle size distribution, generally nonspherical morphology, low levels of bulk impurities, and low levels of surface impurities. Flowable chips can be added to the crucible using conventional feeder equipment, such as vibration feeder systems and canister feeder systems.
Public/Granted literature
- US20110286906A1 Flowable Chips and Methods for the Preparation and Use of Same, and Apparatus for Use in the Methods Public/Granted day:2011-11-24
Information query
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