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Micro Fabry Perot light modulator for flat panel display |
Jiyong SUN( ), Shanglian HUANG, Jie ZHANG, Yi QIN, Xuming SUN |
| The Key Laboratory for Optoelectronic Technology and System, Education Ministry of China, Optoelectronic Engineering Department, Chongqing University |
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Abstract A new type of Fabry Perot light modulator for displays based on micro-electro-mechanical system technology is proposed. Multiple beam interference theory is used to design the modulator and analyze its characteristics. If Fabry Perot cavity length is one-quarter of the incident wavelength, the transmitted light is blocked by the modulator, and the modulator, which is illuminated from its backside, appears black. If the Fabry Perot cavity length is 0 or one-half of the incident wavelength, light may transmit the Fabry Perot modulator from its backside, and the modulator appears bright. Hence, the modulator may be used for flat panel displays. In this paper one Fabry Perot light modulator based on surface micromachining technology is introduced. The designed modulator has a contrast ratio of 150 and can theoretically be driven by a voltage of 2.4 V.
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| Keywords
optical micro-electro-mechanical system (optical MEMS)
Fabry Perot light modulator
interference
display
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Corresponding Author(s):
SUN Jiyong,Email:stoiker@163.com
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Issue Date: 05 September 2009
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