Source follower capable of compensating the threshold voltage

Details Source follower capable of compensating the threshold voltage Source follower capable of compensating the threshold voltage

2005-04-05

2005-04-05

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

Reexamination Certificate

active

06876235

ABSTRACT:
A source follower capable of compensating the threshold voltage is provided. The source follower comprises a current source, a switching circuit, and a thin film transistor. The source follower makes the threshold voltage of the thin film transistor constant by using the current source, and makes the input voltage nearly equal to the output voltage by using the storage capacitor and the compensating capacitor. Thus, it can make the error of the output voltage fall in the error range of the gray level voltage.

REFERENCES:
patent: 5280511 (1994-01-01), Fujii et al.
patent: 5701136 (1997-12-01), Huq et al.
patent: 5872473 (1999-02-01), Williams
patent: 6181314 (2001-01-01), Nakajima et al.
patent: 6243066 (2001-06-01), Murakami et al.

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