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Sensors 2009, 9(3), 2162-2175; doi:10.3390/s90302162

Electromechanical Characteristic Analysis of Passive Matrix Addressing for Grating Light Modulator

1, 2,* , 1, 2
1, 2
1, 2
The Key Laboratory of Fundamental Science of Micro/Nano Device & System Technology, Chongqing university, Chongqing, 400044, P.R. China
Optoelectronic Engineering Department, Chongqing University, Chongqing, 400044, P.R. China
Author to whom correspondence should be addressed.
Received: 23 January 2009 / Revised: 5 March 2009 / Accepted: 19 March 2009 / Published: 24 March 2009
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AGrating Light Modulator (GLM) based on Micro-Electro-Mechanical Systems (MEMS) is applied in projection display. The operating principle of the GLM is introduced in this paper. The electromechanical characteristic of the passive matrix addressing GLM is studied. It was found that if the spring constant is larger, both the response frequency and the driving voltage are larger. Theoretical analysis shows that the operating voltage and the pull-in voltage of the GLM are 8.16 and 8.74 V, respectively. When an all-selected pixel in a m×n array is actuated by a voltage V0, the voltages of the half-selected pixel in row and column are V0(m-1)/(m+n-1) and V0(n-1)/(m+n-1), respectively, and the voltage of the non-selected pixel is V0/(m+n-1). Finally, the experimental results indicate that the operating voltage and the pull-in voltage are 7.8 and 8.5V respectively, and the response frequency of the GLM is about 7 kHz. The crosstalk in a 16×16 GLM array is validated by the experiment. These studies provide a theoretical basis for improving the GLM driver. View Full-Text
Keywords: MEMS; GLM; response frequency; driving voltage; crosstalk MEMS; GLM; response frequency; driving voltage; crosstalk

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Jin, Z.; Wen, Z.; Zhang, Z.; Huang, S. Electromechanical Characteristic Analysis of Passive Matrix Addressing for Grating Light Modulator. Sensors 2009, 9, 2162-2175.

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