Transflector for illuminated electrooptic displays

Details Transflector for illuminated electrooptic displays Transflector for illuminated electrooptic displays

1978-08-21

1980-04-08

Bauer, Edward S.

350345, G02F 113

Patent

active

041969731

ABSTRACT:
Disclosed is an improved transflector especially useful in illuminated liquid crystal display devices operative in the reflective and transmissive modes for significantly enhancing the optical viewability thereof, especially in the daytime reflective mode. Typically, the improved transflector is a transluscent plate-like member including as an essential feature a layer portion of white transluscent material having a certain minimum effective thickness in the primary direction of light propagation in the device such that ambient light incident upon the white layer during daylight viewing is subjected to enhanced diffusion, fringing and brightening to provide a brighter appearing background and darker-appearing display characters to the daytime viewer for improved contrast and also to provide an apparent increase in the "brush-stroke" width of the display characters to the same viewer.

REFERENCES:
patent: 4042294 (1977-08-01), Billings et al.

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