Alps Electric Co., Ltd.

Yoshifumi Masumoto

Hideaki Nagakubo

Takao Tanaka

Ryohei Kakuta

Takahito Mafune

Yasuhiro Miki

Seiji Tokita

Hiroshi Watanabe

A liquid crystal display includes a pair of opposing substrates in which a liquid crystal layer is disposed therebetween. Transparent electrodes are disposed on the surfaces on the liquid crystal layer sides of the substrates and lead-out wiring leads out the transparent electrodes. The lead-out wiring are formed on one substrate. At least a part of the lead-out wiring is formed by a combination of at least a transparent conductive layer and a conductive reflection-preventing layer.

Liquid crystal display driven by one driving IC

The screen of a liquid crystal panel is divided into two portions. In the divided screens (upper screen and lower screen), the corresponding common electrodes (each for one divided screen) are simultaneously driven. The driving signal (common signal C,) of the upper screen and the driving signal (common signal C,) of the lower screen change in one cycle of four frame periods. More specifically, in the above-mentioned cycle, the common signal C,changes in a pattern (1&rarr;1&rarr;1&rarr;&minus;1), and the common signal C,changes in a pattern (1&rarr;&minus;1&rarr;1&rarr;1) in synchronization with each other. Accordingly, upon comparison of the common signals C,and C,it appears that the signal having the same waveform is applied to the common electrodes while being out of phase with each other. Thus, a difference of the drive frequency between the upper screen and the lower screen is eliminated. It is thus possible to provide an inexpensive liquid crystal apparatus, which is connected to an existing dual-scan interface, without degrading the display quality.

Liquid crystal display apparatus

A liquid crystal display device includes transparent electrodes mutually extending in parallel, and lead patterns used as terminals leading from ends of the transparent electrodes, both formed on a cell substrate produced by separating a large glass substrate. In the device, extension patterns leading from other ends of the transparent electrodes are formed on the cell substrate, and minute gaps for discharging static electricity accumulated in the transparent electrodes during a production process are formed at portions of the extension patterns outside an effective display region. The liquid crystal display device is produced such that transparent electrodes, lead patterns used as terminals leading from ends of the transparent electrodes, extension patterns leading from the other ends of the transparent electrodes, and an identical potential pattern outside the cell substrate-formed patterns being conductive with the transparent electrodes are formed with a plurality of cell substrate-formed regions being adjacently positioned, minute gaps narrower than the gap between the adjacent transparent electrodes are formed within each cell substrate-formed region outside an effective display region, and the large glass substrate is cut so that a plurality of cell substrates are separately formed.

Substrate for liquid crystal display element and method for

Growing community of inventors

Fukushima-ken, Japan

Yoshifumi Masumoto