Method of controlling viewability of a display screen and a devi

Details Method of controlling viewability of a display screen and a devi Method of controlling viewability of a display screen and a devi

1996-09-10

1998-10-20

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal system

Liquid crystal window

345 3, 345 5, 380 24, G02F 1133, G09G 500, H04K 100

Patent

active

058254366

ABSTRACT:
A display includes a display screen for displaying information. A liquid crystal display (LCD) panel adjoins the display screen. The LCD panel is controlled to selectively define a viewing angle within which a selectable portion of the display screen is viewable through the LCD panel. The LCD panel includes a plurality of energizable segments which, when energized, are transparent to allow the selectable portion of the display screen to be viewed. Each of the plurality of energizable segments is selectively energizable to selectively enable corresponding portions of the display screen to be viewed.

REFERENCES:
patent: 4479112 (1984-10-01), Hirsch
patent: 4749261 (1988-06-01), McLaughlin et al.
patent: 4890902 (1990-01-01), Doane et al.
patent: 5059957 (1991-10-01), Todoriki et al.
patent: 5328580 (1994-07-01), Reamey
patent: 5530572 (1996-06-01), He
patent: 5570141 (1996-10-01), Sirkin et al.

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