Guard ring having electrically isolated lightening bars

A guard ring for protecting against electrostatic discharge (ESD) that has electrically isolated lightning bars has a substrate, a first ring, and a second ring. The first ring is on the substrate and has a number of electrically connected lightning bars. The second ring is also on the substrate and...

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Bibliographische Detailangaben
Hauptverfasser:	WU TIENI, CHEN KOUOU, HSU HUAI-JEN, HUANG GEORGE
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR BASIC ELECTRIC ELEMENTS CINEMATOGRAPHY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS SEMICONDUCTOR DEVICES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A guard ring for protecting against electrostatic discharge (ESD) that has electrically isolated lightning bars has a substrate, a first ring, and a second ring. The first ring is on the substrate and has a number of electrically connected lightning bars. The second ring is also on the substrate and concentric to the first ring, but has a number of lightning bars that are electrically isolated from one another. The first ring may be the outer ring and the second ring may be the inner ring, or vice-versa. The guard ring has an ESD breakdown voltage that does not change, even after the first ring or the second ring has protected against ESD. The guard ring may protect a semiconductor component like a semiconductor photomask or a semiconductor device.