PWM DRIVING CIRCUIT FOR BISTABLE CHOLESTEROL LIQUID CRYSTAL DISPLAY
碩士 === 大同大學 === 電機工程學系(所) === 101 === This thesis proposes a driving circuit employing the pulse-width modulation (PWM) technique in bistable cholesterol liquid crystal display. The circuit includes digital-to-time converter, HV driver (shifting digital output to higher voltage capable of driving th...
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| Format: | Others |
| Language: | en_US |
| Published: |
2013
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| Online Access: | http://ndltd.ncl.edu.tw/handle/48461559222056784520 |
| Summary: | 碩士 === 大同大學 === 電機工程學系(所) === 101 === This thesis proposes a driving circuit employing the pulse-width modulation (PWM) technique in bistable cholesterol liquid crystal display. The circuit includes digital-to-time converter, HV driver (shifting digital output to higher voltage capable of driving the bistable cholesterol liquid crystal), counter and other digital logic such as shift registers, data latches and multiplexers.
The proposed driver was implemented in two ways to drive a 4x4 cholesterol liquid crystal array. The first was demonstrated by employing ALTERA DE2-70 development board plus external soldering circuit which contains SOIC named APM4588K. The second was designed using TSMC 0.25μm 2P3M HV process model with a 5V supply and 60V supply. In the end, the simulation is made to ensure the circuit fits the cholesterol liquid crystal array.
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