Alps Electric Co., Ltd.

Hideyuki Matsuda

Kazuya Okabe

Hiroyuki Hebiguchi

Yasuhiko Kasama

Jun Nakanowatari

Chisato Iwasaki

Satoshi Fujimoto

A thin film transistor array includes a gate bus and a source bus intersecting with each other at right angles, a thin film transistor pair disposed adjacent to the intersecting point and electrically connected to the two buses. If a short circuit is detected between the two buses, the gate bus or the source bus is severed into a separate portions to eliminate the short circuit. A bypass bus is provided to electrically connect the electrically good severed portions and to the end terminal. Such a bypass bus avoids the need for additional power supply terminals to the opposite ends of the severed bus and facilitates driving the thin film transistor by supplying the power at only one end thereof.

Thin film transistor array incorporating a shorted circuit bypass

In a thin-film transistor array, a plurality of gate buses and a plurality of source buses are formed on a substrate in such a manner that said gate buses are intersected with said source buses at crossover portions, and a plurality of thin-film transistors are formed on the substrate adjacent to the crossover portion, which are connected to the gate buses and source buses for a driving purpose. Furthermore, an auxiliary bus is formed on either the gate buses, or source buses, shortcircuited portions of which are cut out by means of laser trimming so as to conduct the gate buses or source buses.

Method for manufacturing a thin-film transistor array and a thin-film

Disclosed is a liquid crystal element using a film transistor as a switching element, the liquid crystal element comprising two substrates opposed to each other, film transistors and spacers disposed on the opposed surface of one of the substrates, a transparent electrode formed on the opposed surface of the other substrate, a metal wiring formed simultaneously with a light shield of a film transistor or an upper metal layer of the spacer, the metal wiring having one end disposed between the film transistor or spacer and the transparent electrode whereas the other end thereof extends to the peripheral edge of the one substrate.

Growing community of inventors

Iwaki, Japan

Hideyuki Matsuda