Metal optical grayscale mask and manufacturing method thereof

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United States of America Patent

PATENT NO 8133642
APP PUB NO 20110111331A1
SERIAL NO

12960418

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Abstract

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A metal optical grayscale mask includes a layer of metal film which is deposited on transparent substrate, and different transparency pattern which is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or random pattern. The grayscale is within 3.0 OD-0.05 OD. The thickness of the metal film is 5-100 nm. A manufacturing method of the metal optical grayscale mask includes that the selected transparent substrate is rinsed by the general semiconductor rinse process, the metal film is deposited on the transparent substrate then different transparency pattern is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or the random pattern. The grayscale mask is low in price, antistatic electricity performance is good, the resolution can surpass optical diffraction limit. The manufacturing method is simple. There is a wide band application for micro-optical components and large-scale production of micro-electro-mechanical systems.

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Patent Owner(s)

Patent OwnerAddress
NATIONAL CENTER FOR NANOSCIENCE AND TECHNOLOGY100190 NO 11 NORTH OF HAIDIAN DISTRICT BEIJING ZHONGGUANCUN BEIJING CITY BEIJING CITY 100190

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cao, Sihai Beijing, CN 1 0
Guo, Chuanfei Beijing, CN 9 26
Liu, Qian Beijing, CN 279 1098
Wang, Yongsheng Beijing, CN 58 135

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