USPatentGranted
B2

Sputtering apparatus

Granted 31 Mar 2015 · 10 office actions

Current assignee: Samsung Display · originally Samsung Electronics

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Inventors: Won-Bong Baek, Kil-Won Lee, Yun-Mo Chung, Jin-Wook Seo +14 · Examiner: Rodney McDonald · AU 1756 · TC 1700

Life of the patent

20 dated events
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Abstract

Provided is a sputtering apparatus which deposits a metal catalyst on an amorphous silicon layer at an extremely low concentration in order to crystallize amorphous silicon, and particularly minimizes non-uniformity of the metal catalyst caused by a pre-sputtering process without reducing process efficiency. This sputtering apparatus improves the uniformity of the metal catalyst deposited on the amorphous silicon layer at an extremely low concentration. The sputtering apparatus includes a process chamber having first and second regions, a metal target located inside the process chamber, a target transfer unit moving the metal target and having a first shield for controlling a traveling direction of a metal catalyst discharged from the metal target, and a substrate holder disposed in the second region to be capable of facing the metal target. A distance difference between a linear distance, which is a distance between a substrate loaded on the substrate holder and the metal target, and a length of the first shield is less than 3 cm.

Claims

13 · 1 independent · depth 4
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13 granted claims

Classifications

10 codes
IPC · International Patent Classification
Section C — Chemistry; metallurgy
  • C23C14/34
  • C23C14/18
Section H — Electricity
  • H01J37/34
USPC · US Patent Classification
204/298.23204/298.29204/298.6204/298.2204/298.15204/298.11204/298.19

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File wrapper

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Pendency
4.4 y
1,595 days filing → grant
Office actions
5
non-final + final
Responses
5
2 RCE
Interviews
1
examiner interview summaries
Examiner
Rodney McDonald
art unit 1756 · TC 1700
Citations: 28 back · 0 forward

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Term & fees

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Priority chain

1 priority documents
›Priority documents — 1
TypeDocumentDate
related publicationUS 20110120859 A126 May 2011

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Citations

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