Fujitsu Corporation

Mitsuharu Nakazawa

Hiroshi Murakami

Ken-ichi Nakabayashi

Keizo Morita

Munehiro Haraguchi

Koji Yoshioka

Masafumi Itokazu

Disclosed is a liquid-crystal drive circuit having a simple configuration and being not susceptible to the characteristic of a device. The liquid-crystal drive circuit includes an auxiliary capacitor, applies a first voltage to a driving buffer, temporarily accumulates an output voltage of the driving buffer in the auxiliary capacitor, applies a voltage produced by subtracting the potential at the auxiliary capacitor from a second voltage to the driving buffer, and applies an output of the driving buffer onto a data bus.

Drive circuit for liquid-crystal displays and liquid-crystal display including drive circuits

A capacitor electrode is formed simultaneously with drain bus lines. This capacitor electrode is electrically connected to the contact of two TFT's through the medium of a contact hole. Then, an interlayer insulating film is formed on the entire face and a black matrix of such light blocking metal film as Ti is formed on the interlayer insulating film so as to overlie the channel parts and the contacts of the TFT's and the capacitor electrode. The capacitor electrode, the interlayer insulating film formed thereon, and the black matrix jointly form a capacitor.

Liquid crystal display device and process for production thereof

Growing community of inventors

Kawasaki, Japan

Mitsuharu Nakazawa