USPatentGranted
B1

Controlled cleavage process and device for patterned films

Granted 2 Jul 2002 · 4 office actions

Current assignee: Silicon Genesis Corporation · originally Silicon Genesis

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Inventors: Francois J. Henley, Nathan Cheung · Examiner: George Fourson

Application
9316493
filed 21 May 1999
Publication
Not published
not published
Patent· this page
US 6,413,837
granted 2 Jul 2002

Life of the patent

13 dated events
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Abstract

A technique for forming a film of material (12) from a donor substrate (10). The technique has a step of introducing energetic particles (22) in a selected manner through a surface of a donor substrate (10) to a selected depth (20) underneath the surface, where the particles have a relatively high concentration to define a donor substrate material (12) above the selected depth and the particles for a pattern at the selected depth. An energy source is directed to a selected region of the donor substrate to initiate a controlled cleaving action of the substrate (10) at the selected depth (20), whereupon the cleaving action provides an expanding cleave front to free the donor material from a remaining portion of the donor substrate.

Claims

22 · 1 independent · depth 4
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22 granted claims

Classifications

3 codes
IPC · International Patent Classification
Section H — Electricity
  • H01L2/130
USPC · US Patent Classification
438/459438/977

Claim changes

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File wrapper

⤢ drag to zoomJul 1999Jan 2000Jul 2000Jan 2001Jul 2001Jan 2002Jul 2002USPTOApplicantNon-final rejectionResponse after non-finalResponse after finalRequest for continued examinationNotice of allowanceRequest for continued examination
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Pendency
3.1 y
1,138 days filing → grant
Office actions
2
non-final + final
Responses
2
2 RCE
Examiner
George Fourson
art unit —
Citations: 254 back · 3 forward

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Term & fees

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Priority chain

1 priority documents
Priority
12 May 1997
earliest claimed
›Priority documents — 1
TypeDocumentDate
provisionalUS 60/046276 0012 May 1997

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Citations

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