Field effect display system with diode selection of picture elem

Details Field effect display system with diode selection of picture elem Field effect display system with diode selection of picture elem

1983-12-27

1987-02-03

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340718, 340804, G09G 336

Patent

active

046411356

ABSTRACT:
A liquid crystal display system is comprised of a control system and a display circuit. The control system selectively generates first address signals and first mode control signals during a first mode of operation and second address signals and second mode control signals during a second mode of operation. The display circuit includes a matrix of display means and diode decoding means. Each of the display means comprises a field effect liquid crystal cell having first and second inputs and a diode switching array selectively coupled to the first and second inputs, with the diode decoding means selectively coupled to each diode switching array. During the first mode of operation, the first address signals and first mode control signals are selectively applied to the diode decoding means to selectively cause preselected cells to charge in a first direction through the associated diode switching arrays. During the second mode of operation, the second address signals and second mode control signals are selectively applied to the diode decoding means to selectively cause the preselected cells to charge in a second direction through their associated diode switching arrays.

REFERENCES:
patent: 3532813 (1970-10-01), Lechner
patent: 4065764 (1977-12-01), Houryu
patent: 4110663 (1978-08-01), Miyazaki et al.
patent: 4237456 (1980-12-01), Kanatami
patent: 4251136 (1981-02-01), Miner et al.
patent: 4297695 (1981-10-01), Marshall
patent: 4485379 (1984-11-01), Kinoshuta et al.

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