Reflection type liquid crystal display apparatus having a reflec

Details Reflection type liquid crystal display apparatus having a reflec Reflection type liquid crystal display apparatus having a reflec

1992-12-17

1994-10-25

Gross, Anita P.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 59, 359 72, G02F 113, G02F 11343, G02F 1135

Patent

active

053594410

ABSTRACT:
A reflection type liquid crystal display apparatus is provided which is capable of displaying bright images by decreasing the loss of projected light. The reflection type liquid crystal display apparatus employs a polymer dispersed liquid crystal (PDLC) panel which assures a display mode (scattering or absorption mode) which does not employ a polarizing film, unlike a conventional liquid crystal panel. It has been found that such polarizing film reduce the efficiency with which the projected light is utilized. Since such a polarizing film is not used, and since the driving circuit portion which blocks the projected light and which serves as the non-opening portion can be utilized effectively for display, brightly displayed images can be obtained.

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