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Apparatus used to align and mark wafers
   
Document Number
US Patent 5796468
Issued Date
August 18, 1998
Link
Inventors
Kim; Kwang Chul (Kyungsangbook-Do,KR)
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Abstract
An apparatus of the present invention includes a stage for moving a wafer in a first prescribed direction, an aligner and a marking apparatus. The aligner aligns patterns exposed by a light onto the wafer. A marking apparatus coupled to the aligner and using the light from the aligner exposes identification markings onto the wafer. Consecutive alignment and marking can be performed in the apparatus.
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Apparatus used to align and mark wafers - US Patent 5796468 Drawing
Drawing from US Patent 5796468
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Number of Claims:
7
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Owner
LG Semicon Co., Ltd. (Cheongju,KR)
Published
August 18, 1998
Application Number
08/822,472
Filed
March 24, 1997
US Classification
355/53   257/E23.179
Int'l Classification
G03F   7/20   (20060101)   H01L   23/544   (20060101)   G03F   9/00   (20060101)   H01L   21/00   (20060101)  
Examiner
Attorney/Law Firm
Parent Case
This application is a continuation-in-part application of application Ser. No. 08/581,354 filed Dec. 28, 1995, now abandoned.
Priority Data
Nov 02, 1995 [KR] 39347/1995
USPTO Field of Search
355/43   355/67   355/71  
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