Two celled color liquid crystal display device

Details Two celled color liquid crystal display device Two celled color liquid crystal display device

1990-11-20

1993-11-23

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 68, G02F 1133, G02F 11335

Patent

active

052649520

ABSTRACT:
In a color liquid crystal display device, the shape of a color filter cannot be seen and coloring of areas other than a display area due to leaking light is prevented. By making a first and second segment electrodes in a two layer construction, it becomes possible to display two different display image planes in different colors with only the single layer type color liquid crystal display device. Further, sufficient contrast can be obtained by using a liquid crystal element for compensation. It is also possible to display two kinds of display image planes, namely a color display image plane and a black and white display image plane. Two kinds of color display image planes can be displayed because the color liquid crystal display device is made in a two layered construction. A so-called normally black display and normally white display can be switched. Further, when the display state is switched between normally black display and normally white display, the background color changes and it is possible to maintain the same display color. Further display colors can be doubled as compared to the example of the prior art.

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