Level shifter circuit

Details Level shifter circuit Level shifter circuit

2008-01-29

2008-01-29

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S306000, C326S062000, C326S068000, C326S080000

Reexamination Certificate

active

07323924

ABSTRACT:
A low-power consumption level shifter circuit is provided by preventing a through current which is generated when a level of a signal is changed. In order to prevent a through current which flows when a level of a signal of the input is changed, the p-channel TFTs are controlled so that the p-channel TFTs and the n-channel TFT or the p-channel TFTs and the n-channel TFT are not turned on at once. A high level signal is inputted to the gate of the n-channel TFT, and at the moment when the n-channel TFT is turned on, the p-channel TFT is turned off. Similarly, at the moment when the n-channel TFT is turned on, the p-channel TFT is turned off. The p-channel TFTs and the n-channel TFT, or the p-channel TFTs and the n-channel TFT are not turned on at once, thereby a path in which the through current flows is cut off.

REFERENCES:
patent: 6292183 (2001-09-01), Yamazaki et al.
patent: 6384808 (2002-05-01), Azami
patent: 6567067 (2003-05-01), Azami
patent: 6700429 (2004-03-01), Kanno et al.
patent: 6777981 (2004-08-01), Kobayashi
patent: 6842043 (2005-01-01), Nguyen et al.
patent: 2005/0052214 (2005-03-01), Sushihara

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