Photomask with electrostatic discharge protection

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11493842
APP PUB NO 20200233298A1
SERIAL NO

16292230

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present invention provides a photomask including a substrate, a circuit pattern on the substrate, an electrostatic discharge (ESD) ring on the substrate and an ESD line on the substrate. The ESD structure surrounds the circuit pattern. The ESD line extends between an edge of the substrate and the ESD structure, in which the ESD line includes an edge portion extending beyond an end of an edge of the ESD structure, and the edge portion of the ESD line includes at least one comb-shaped structure.

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Patent Owner(s)

Patent OwnerAddress
YANGTZE MEMORY TECHNOLOGIES CO LTD430074 ROOM 18 HUAGUANG AVENUE KANTO SCIENCE AND TECHNOLOGY INDUSTRIAL PARK EAST LAKE DEVELOPMENT ZONE WUHAN HUBEI 7018 WUHAN CITY HUBEI PROVINCE 430074

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fang, Hong Wuhan, CN 25 38
Jiang, Peng Wuhan, CN 189 882
Mu, Yuping Wuhan, CN 3 3

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