Color liquid crystal display device and liquid crystal display a

Details Color liquid crystal display device and liquid crystal display a Color liquid crystal display device and liquid crystal display a

1995-04-24

1998-04-28

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349181, 349130, G02F 11335, G02F 11337, C09K 1902

Patent

active

057452008

ABSTRACT:
A birefringence control type color liquid crystal display device includes a liquid crystal cell having first and second substrates; first and second electrodes formed on opposing surfaces of the first and second substrates; a first aligning film formed on the first electrode and subjected to an aligning treatment in a first direction; a second aligning film formed on the second electrode and the second substrate and subjected to an aligning treatment in a second direction intersecting the first direction at 90 degrees; and a liquid crystal sealed between the first and second aligning films and twisted at 90 degrees. The device further includes a first polarization plate arranged outside of the second substrate and having a transmission axis intersecting the first direction at substantially 140 to 160 degrees; a second polarization plate arranged outside of the first substrate and having a transmission axis intersecting the transmission axis of the first polarization plate at substantially 10 to 40 degrees; a first retardation plate arranged between the second substrate and the second polarization plate, with a direction of a maximum refraction index intersecting the first direction at 130 to 160 degrees; and a second retardation plate arranged between the second substrate and the second polarization plate, with a direction of a maximum refraction index intersecting the first direction at substantially 40 to 80 degrees.

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