Method of controlling viewability of a display screen and a device therefor

摘要

A display includes a display screen 21 for displaying information. A liquid crystal display (LCD) panel 70 adjoins the display screen 21. The LCD panel 70 is controlled to selectively define a viewing angle within which a selectable portion of the display screen 21 is viewable through the LCD panel 70. The LCD panel 70 includes a plurality of energizable segments 80 which, when energized, are opaque. Each of the plurality of energizable segments 80 is selectively energizable to selectively define the viewing angle within which information on the display screen 21 is viewable through the LCD panel 70. The segments of the LCD panel 70 are spaced apart from each other across the LCD panel 70 to provide a louvered- type of privacy screen when the segments 80 are opaque. <IMAGE>