1V, 1.13μm pixel pitch Liquid Crystal Driver with Charge-Balancing Scheme for SLM Applications

This work proposes a compact 9T SRAM-based pixel design for low-voltage and high-speed modulator for spatially varying modulation of light (i.e. SLM). To reduce the supply voltage to the CMOS pixel backplane, the operating point is shifted towards the linear window by dynamically pulsing both the to...

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Bibliographic Details
Published in2023 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 1 - 5
Main Authors Mani, A., Sheng, C.Y., Zhu, D., Veetil, R.M., Parikshit, M., Mass, T.W.W., Choong, C.S., Xuewu, X., Dominguez, R.P., Kuznetsov, A.I., Krishna, P., Keyi, P., Chai, K.T.C., Do, A.T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.05.2023
Subjects
Digital driving scheme
Linearity
Liquid crystal displays
Liquid crystals
Low voltage
Low voltage displays
Optical modulation
Optical switches
Prototypes
Spatial Light Modulators
VGA
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Summary:This work proposes a compact 9T SRAM-based pixel design for low-voltage and high-speed modulator for spatially varying modulation of light (i.e. SLM). To reduce the supply voltage to the CMOS pixel backplane, the operating point is shifted towards the linear window by dynamically pulsing both the top & bottom electrodes in each pixel. A test chip in a standard 40nm CMOS technology was implemented, supporting upto 90 frames/second VGA display. Our testing results demonstrated that the proposed HCS switching scheme is efficient in achieving optical modulation up to 8-bit resolution, making it a viable candidate for state of the art SLMs applications with high frame rate and low power requirements.
ISSN:2158-1525
DOI:10.1109/ISCAS46773.2023.10181430