Alps Electric Co., Ltd.

Takao Tanaka

Takehiro Ishikawa

Fumihiko Sagawa

Yoshifumi Masumoto

Humihiko Sagawa

Hiroshi Watanabe

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

A liquid crystal display in which an LCD is protected against the influence of static electricity or noise, and the color shading in the peripheral part of the display area of the LCD is suppressed. A ground terminal is provided in the area between the electrode terminals 5a and 5b of the LCD 1, the electrode terminals being adjacently positioned and connected to different flexible substrates 6 and 6. The ground terminal is electrically independent of the electrode terminal group 5's, and has a similar shape to that of the area between two electrode terminals. A ground pattern 13, which is independent of the lead pattern group 8's and connected to the ground terminal 12, is provided on each flexible substrate 6. The ground pattern 13 is grounded through a printed circuit board.

Liquid crystal display with ground regions between terminal groups

A method of connecting a liquid crystal display element and a flexible circuit board to each other by which electrode terminals of the flexible circuit board and lead terminals of the flexible circuit board are registered accurately with each other after connection. According to this method, the terminal pitch of the electrode terminals of the liquid crystal display element is represented by P, the terminal pitch of the lead electrodes before a pressurizing and heating step is represented by p, and the elongation percentage of a base film of the flexible circuit board by the pressurizing and heating step is represented by .alpha., either one of the terminal pitches P and p is set in advance relative such that the relationship of P=(1+.alpha.)p may be satisfied.

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Iwaki, Japan

Takao Tanaka