Liquid crystal cells – elements and systems – Particular structure – Interconnection of plural cells in series
Patent
1999-04-08
2000-10-17
Ullah, Akm E.
Liquid crystal cells, elements and systems
Particular structure
Interconnection of plural cells in series
349117, 349 63, G02F 11347, G02F 11335
Patent
active
061339709
ABSTRACT:
A liquid crystal display has excellent viewing angle characteristics and prevents any reduction of transmittance. A liquid crystal panel has a pair of substrates SUB1, SUB2 sandwiching a liquid crystal layer LC, at least one of the substrates having electrodes DTM for selecting pixels, polarizing plates POL1, POL2 disposed on both sides of the liquid crystal panel to control the transmitted light depending on the state of orientation of liquid crystal molecules by applying a voltage to the electrodes, illumination means BL for illuminating the liquid crystal panel, a driving circuit for applying a voltage in accordance with a display image to the electrodes, and birefringent sheet PDS formed on the outer surface of one of the pair of substrates SUB1 and SUB2 such that the direction of the maximum contrast or luminance becomes the vertical direction and such that viewing angle characteristics become symmetric in the horizontal direction, wherein the liquid crystal layer LC is oriented such that the transmittances of the liquid crystal panel in use in the vertical direction and horizontal direction have asymmetric viewing angle dependence and such that the direction of the maximum contrast or luminance is a direction different from either of the vertical and horizontal directions.
REFERENCES:
patent: 5519523 (1996-05-01), Madokoro
patent: 5659411 (1997-08-01), Nito et al.
patent: 5975703 (1999-11-01), Holman et al.
Hirakata Jun-ichi
Ohwada Jun-ichi
Sasaki Toru
Hitachi , Ltd.
Ullah Akm E.
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