Hitachi, Ltd.

Hitachi Haramachi Semi-Conductor, Ltd.

Other

Fumiaki Nemoto

Ryuichi Saito

Yoshiro Mikami

Makoto Tsumura

Yoshiharu Nagae

Masaaki Kitajima

Katsuyuki Funahata

Makoto Matsui

Yoko Wakui

A liquid crystal active matrix display device includes a first substrate having a thin film transistor formed thereon. A light-screening film,is located on the first substrate in a manner to be overlapped with an ITO. The display device includes a second substrate having a color filter and a light-screening film,formed thereon. The second substrate is opposed to the first substrate. The light-screening film,extends from the uncontrollable area by a certain value depending on a voltage from the external, resulting in improving a numerical aperture.

Liquid crystal display device and driving method therefor

A liquid crystal active matrix display device includes a first substrate having a thin film transistor formed thereon. A light-screening film 1 is located on the first substrate in a manner to be overlapped with an ITO. The display device includes a second substrate having a color filter and a light-screening film 2 formed thereon. The second substrate is opposed to the first substrate. The light-screening film 2 extends from the uncontrollable area by a certain value depending on a voltage from the external, resulting in improving a numerical aperture.

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Hitachi, Japan

Fumiaki Nemoto