Tablet integrated liquid crystal display apparatus with less par

Details Tablet integrated liquid crystal display apparatus with less par Tablet integrated liquid crystal display apparatus with less par

1997-01-02

1999-11-30

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal system

Liquid crystal writing tablet

349139, 349158, 349165, G02F 11333

Patent

active

059951729

ABSTRACT:
In a tablet integrated type liquid crystal display apparatus, a first transparent substrate is provided on a view side. The first substrate is a plastic substrate having a thickness equal to or thinner than 0.6 mm, and a counter electrode is formed on the first substrate. A second substrate on which a driving layer composed of switching elements and pixel electrodes respectively connected to the switching elements is formed. The second substrate is a glass substrate having a thickness in a range of 0.6 mm to 1.1 mm. A guest host liquid crystal layer sandwiched by the first substrate and the second substrate such that the guest host liquid crystal is driven by a voltage applied between the counter electrode and the pixel electrode. A tablet electrode layer may be provided between the first substrate and the counter electrode. Alternatively, a tablet electrode layer may be provided on the first substrate on an opposite side of the counter electrode. In this case, a protecting film is provided on the tablet electrode layer. In addition, a tablet electrode layer may be provided between the second substrate and the driving layer such that the tablet electrode layer is isolated from the driving layer.

REFERENCES:
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patent: 4853498 (1989-08-01), Meadows et al.
patent: 5659332 (1997-08-01), Ishii et al.
patent: 5677744 (1997-10-01), Yoneda et al.
patent: 5729319 (1998-03-01), Inou et al.
patent: 5774107 (1998-06-01), Inou

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