Apparatus for driving an LCD module with one driving circuit

Details Apparatus for driving an LCD module with one driving circuit Apparatus for driving an LCD module with one driving circuit

1993-10-08

1995-02-07

Weldon, Ulysses

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345100, G09G 320

Patent

active

053879228

ABSTRACT:
Apparatus for driving a liquid crystal display module provided with one driving circuit for outputting overflown LCD driving circuit. The LCD driving controller outputs two groups of scanning signals which are sequentially outputted at two timings being different from each other, synchronously with LCD driving data for each and every dot. The driving circuit receives overflown LCD driving data which has overflowed the capacity of the LCD driving controller. The LCD panel has scanning electrodes which are divided into two groups, that is, a first group of scanning electrodes corresponding to the first to eightieth dots and a second group of scanning electrodes corresponding to the eighty first to hundredth dots, and has signal electrodes which are applied with the LCD driving data outputted from the LCD driving controller and the driving circuit, respectively, in order to display the characters on the character display member thereof. The driving apparatus of this invention provides advantage in that it needs only one driving circuit for outputting overflown LCD driving data, thereby simplifying the construction thereof and reducing the manufacturing cost and also improving the productivity due to the simplification of the construction thereof.

REFERENCES:
patent: 4346378 (1982-08-01), Shanks
patent: 4730140 (1988-03-01), Masubuchi
patent: 4779085 (1988-10-01), Mizutome et al.
patent: 5049865 (1991-09-01), Nakamura et al.

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