Connection structure between a tab film and a liquid crystal pan

Details Connection structure between a tab film and a liquid crystal pan Connection structure between a tab film and a liquid crystal pan

1992-03-27

1994-05-10

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 87, G02F 1133, G09F 900

Patent

active

053113411

ABSTRACT:
The improved liquid-crystal display device has a slit formed in part of the TAB area where the electrodes on the liquid-crystal display panel are connected to the output terminals on the TAB and the liquid-crystal display panel is bonded to the TAB by means of a first anisotropic conductive adhesive having a comparatively weak adhesive force, such as a thermoplastic anisotropic conductive adhesive, whereas a second anisotropic conductive adhesive having a comparatively strong adhesive force, such as a uv curable adhesive, is coated in the slit. This liquid-crystal display device can be produced by a process that proceeds basically as follows: the electrodes on the liquid-crystal display panel are connected to the output terminals on the TAB by means of a thermoplastic adhesive as the first anisotropic conductive adhesive having a comparatively weak adhesive force; then, the assembly is subjected to an operating test; if the TAB is found to be defective in the operating test, it is replaced and, if no defect is found, a uv curable or a thermosetting adhesive as the second anisotropic conductive adhesive having a comparatively strong adhesive force is coated in the slit and then cured as the output terminals are compressed against the electrodes.

REFERENCES:
patent: 4431270 (1984-02-01), Funada et al.
patent: 4640581 (1987-02-01), Nakanowatari et al.
patent: 4767189 (1988-08-01), Hayashi et al.
patent: 4842373 (1989-06-01), Tomofuji et al.
patent: 4963002 (1990-10-01), Tasuga et al.
patent: 5072289 (1991-12-01), Sugimoto et al.
patent: 5161009 (1992-11-01), Tanoi et al.
patent: 5212576 (1993-05-01), Yoshioka

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