Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1997-09-24
2000-02-29
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 98, 345 89, G09G 336
Patent
active
060315156
ABSTRACT:
A display driver which is simplified in construction of a power supply circuit and is reduced in power dissipation. The display driver includes a column driver including a decoder and a plurality of analog switches. One of the analog switches which outputs a voltage of the lowest potential is formed from an nMOS field effect transistor connected between a potential supply point of the lowest potential to be outputted and an output point so as to form a current path. The back gate electrode of the MOS field effect transistor is connected to the potential supply point of the lowest potential. A level shift circuit level shifts a lower side potential from among output signals of the decoder to the lowest potential to be outputted and provides the level shifted signal to the gate electrode of the MOS field effect transistor. Since the lowest potential to be supplied to the display elements belonging to a column need not necessarily be fixed to the ground potential, the construction of the power supply circuit can be simplified and reduction in current of the power supply circuit and reduction in number of circuit components can be achieved.
REFERENCES:
patent: 3936676 (1976-02-01), Fujita
patent: 5229761 (1993-07-01), Fuse
patent: 5262881 (1993-11-01), Kuwata et al.
patent: 5387828 (1995-02-01), Nakano
patent: 5404081 (1995-04-01), Kane et al.
patent: 5489919 (1996-02-01), Kuwata et al.
patent: 5548302 (1996-08-01), Kuwata et al.
patent: 5596344 (1997-01-01), Kuwata et al.
patent: 5682177 (1997-10-01), Kuwata et al.
patent: 5818406 (1998-10-01), Tsuchi et al.
T.N. Ruckmongathan, International Display Research Conference, IEEE, 1988 pp. 80-85.
Hjerpe Richard A.
Marc-Coleman Marthe Y.
NEC Corporation
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