Level shifter and display device using same

Details Level shifter and display device using same Level shifter and display device using same

2007-04-24

2007-04-24

Chen, Shih-Chao (Department: 2821)

Computer graphics processing and selective visual display system

Display driving control circuitry

C315S169200

Reexamination Certificate

active

10941912

ABSTRACT:
A level-shifter is combined with a bi-directional shift register. The level shifter turns a start signal of the bi-directional shift register to be an enable signal, and (i) activates a level shifting section by supplying a stationary current, during a period in which the enable signal is HIGH, while (ii) deactivates the level shifting section by cutting off the stationary current, during a period in which the enable signal EN is LOW. With this, it is possible to reduce unnecessary current consumption by a level shifter provided for a signal which does not frequently change, such as a shifting direction switching signal for which the bi-directional shift register is provided. At the same time, when such a signal changes, the change is followed with no time lag.

REFERENCES:
patent: 5041823 (1991-08-01), Johnson et al.
patent: 6091392 (2000-07-01), Imamura
patent: 6724363 (2004-04-01), Satoh et al.
patent: 6836269 (2004-12-01), Maeda et al.
patent: 6920570 (2005-07-01), Fujimoto et al.
patent: 6970153 (2005-11-01), Park
patent: 2003/0179174 (2003-09-01), Matsuda et al.
patent: 2004/0108989 (2004-06-01), Gyouten et al.
Copending U.S. Appl. No. 10/788,161, filed Feb. 25, 2004.

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