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公开(公告)号：US3622742A
公开(公告)日：1971-11-23
申请号：US3622742D
申请日：1970-05-27
Applicant: BELL TELEPHONE LABOR INC
Inventor： COHEN MELVIN IRWIN , WEICK WALTER WERNER , WEST JOHN WESLEY
CPC classification number: B23K26/0823
Abstract: Thin film integrated circuits are formed by coating insulative substrates with conductive film and mounting them on the periphery of a rotating drum. As the drum rotates, a switched laser machines the circuit pattern by vaporizing parts of the metal film of successive substrates. Light from another laser is directed through a mask on the drum circumference and controls modulation of the machining laser.
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