Electroluminescent lamp for liquid crystal display

Details Electroluminescent lamp for liquid crystal display Electroluminescent lamp for liquid crystal display

1983-05-02

1985-02-19

Corbin, John K.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

3151693, 428917, G02F 1133, H05B 3700

Patent

active

045001731

ABSTRACT:
A backlighted liquid crystal display is disclosed which includes an electroluminescent backlight having a reduced amount of phosphor acting as both a source of light for viewing the display during nighttime hours and as a light diffuser for viewing the display during daytime hours. The electroluminescent backlight is made thinner while the phosphor content is optimally reduced to provide a backlight that improves the viewability of the display especially during daytime hours without the need of a transflector. Wherein the minimal amount of phosphor is dispersed in a binder in the electroluminescent layer is substantially 1 volume unit of phosphor for every 4 to 5 volume units of binder.

REFERENCES:
patent: 2698915 (1955-01-01), Piper
patent: 2851634 (1958-09-01), Kazan
patent: 3110836 (1963-12-01), Blazek
patent: 3712827 (1973-01-01), Gramza
patent: 4142781 (1979-03-01), Baur et al.

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