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Proceedings Paper

Application of multi-tone mask technology in photolithographic fabrication of color filter components in LCD
Author(s): Yoshihiro Takada; Matoko Fukui; Tsunehiro Sai
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Paper Abstract

Recent progresses in the photoresists and photolithography for LCD industry applications have been primarily driven by the following two factors: advancement in the material performances (high resolution, high contrast ratio, low dielectric constant) for higher display quality, and cost reduction in the fabrication process. Along with crucial demand for cost competitiveness by improving production efficiency, environmental consciousness has been a major priority at fabrication process design to minimize the amount of waste produced. Having said the above, integration of two or more fabrication processes into a single process by using multi-tone mask technology has been the interest of research, due to its obvious advantage of reducing fabrication processes and cost. For example, multi-tone mask technology application has been widely employed on the TFT side to reduce the different types of photomasks being used. Similar trend has been employed on the CF side as well, where application of multi-tone mask technology is being investigated to integrate fabrication of multiple CF micro-components into a single process. In this presentation, we demonstrate a new approach of fabricating photospacer and peripheral CF components (MVA protrusion, sub-photospacers) in a single integrated process through multi-tone mask technology.

Paper Details

Date Published: 4 December 2008
PDF: 9 pages
Proc. SPIE 7140, Lithography Asia 2008, 71401T (4 December 2008); doi: 10.1117/12.804628
Show Author Affiliations
Yoshihiro Takada, Mitsubishi Chemical Corp. (Japan)
Matoko Fukui, Mitsubishi Chemical Corp. (Japan)
Tsunehiro Sai, Mitsubishi Chemical Corp. (Japan)

Published in SPIE Proceedings Vol. 7140:
Lithography Asia 2008
Alek C. Chen; Burn Lin; Anthony Yen, Editor(s)

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