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Patent Searching and Data


Title:
RETICULE FOR REDUCTION PROJECTION ALIGNER
Document Type and Number:
Japanese Patent JPH04177348
Kind Code:
A
Abstract:

PURPOSE: To enable it to grasp a correct shifting value as well as to make improvements in manufacturing yield and reliability for a semiconductor element by installing a shifting check pattern in and around the four sides of a reticule.

CONSTITUTION: An element pattern area 1 consisting of a metal film or metal oxide film is formed in a reticule, and furthermore both Y-X directional shifting check patterns 3, 4 are installed in a peripheral part of four sides. Since these shifting check patterns 2, 4 are formed in four directions, shifting pattern in all directions of the element pattern area 2 are checkable. With this constitution, such a defect that manufacturing yield and reliability for a semiconductor are lowered due to the shifting pattern is brought to nothing.


Inventors:
NAGAYASU KATSUYUKI
Application Number:
JP30691490A
Publication Date:
June 24, 1992
Filing Date:
November 13, 1990
Export Citation:
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Assignee:
NEC YAMAGUCHI LTD
International Classes:
G03F1/42; H01L21/027; H01L21/30; (IPC1-7): G03F1/08; H01L21/027
Domestic Patent References:
JPS5251874A1977-04-26
JPS53128278A1978-11-09
JPS5463680A1979-05-22
JPS61124943A1986-06-12
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)