Display device comprising a light valve unit in conjunction with

Details Display device comprising a light valve unit in conjunction with Display device comprising a light valve unit in conjunction with

1979-02-23

1980-11-25

Bauer, Edward S.

350334, G02F 1133

Patent

active

042355273

ABSTRACT:
An improved display device having a light valve unit or display and a fluorescent plate characterized by a frame member for holding the light valve unit and fluorescent plate with the exit windows of the fluorescent plate being aligned with the switchable zones of the light valve unit. Preferably, the frame member will pass light which will excite the fluorescent particles of the fluorescent plate but will not allow passage of the fluorescent light so that a high contrast of the display can be obtained. The frame, which is preferably molded of synthetic plastic, can contain fluorescent particles, which emit light at a frequency range that does not impair the optical contrast of the display and which can be utilized to charge a battery for an auxiliary illumination device.

REFERENCES:
patent: 4142781 (1979-03-01), Baur et al.
Bechtler et al.: "Dim Light Is No Turnoff for Fluorescence Activated LCD", Electronics, Dec. 8, 1977, pp. 113-116.
Keil: "Design Principles of Fluorescent Radiation Converters", Nuclear Instruments and Methods, 1970, pp. 111-123.

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