IPS LCD device having a wider viewing angle

Details IPS LCD device having a wider viewing angle IPS LCD device having a wider viewing angle

2004-12-08

2008-12-02

Duong, Thoi V (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S118000, C349S096000, C349S141000

Reexamination Certificate

active

07460198

ABSTRACT:
An in-plane-switching-mode (IPS) LCD device includes a TFT substrate and a CF substrate sandwiching therebetween an LC layer, and a pair of polarizing films sandwiching therebetween the substrates and the LC layer. Each polarizing film has a polarization layer and a protective layer An optical compensation layer having a birefringence is disposed between the light-emitting-side polarizing film and the CF substrate. The optical compensation layer has an in-plane retardation of N1satisfying the following relationship:in-line-formulae description="In-line Formulae" end="lead"?83.050−0.810×D1≦N1≦−228.090−0.74D1in-line-formulae description="In-line Formulae" end="tail"?in the range of 0<D1≦80 μm, wherein D1is the thickness of the protective layer of the light-incident-side polarizing film.

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patent: 2001-242462 (2001-09-01), None

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