Liquid crystal matrix device having separate driving circuits wi

Details Liquid crystal matrix device having separate driving circuits wi Liquid crystal matrix device having separate driving circuits wi

1986-03-20

1989-01-31

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

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

340702, 340765, 350332, G09G 336

Patent

active

048019330

ABSTRACT:
A multiplex-driven liquid crystal X-Y matrix display in which the electrodes are divided into several blocks and a driving voltage is independently applied to each of the blocks. Each driving voltage has a magnitude that is different from the remaining drive voltages. The display panel is free from nonuniform or deteriorated contrast even if it has a large number of scanning electrodes. Besides, for a color display, the color balance is favorably adjusted, realizing a high quality picture image.

REFERENCES:
patent: 4317115 (1982-02-01), Kawakami et al.
patent: 4395709 (1983-07-01), Nagae et al.
patent: 4574280 (1986-03-01), Weber
patent: 4593978 (1986-06-01), Mourey et al.
patent: 4642628 (1987-02-01), Murata
patent: 4646074 (1987-02-01), Hashimoto
"Eurodisplay '81", Proceedings of the First European Display Research Conference, Sep. 16-18, 1981, pp. 39-42.

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