G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/13357 (2006.01) G09F 9/35 (2006.01) H05B 41/36 (2006.01)
Patent
CA 2254566
A backlight device for a color liquid crystal display includes a high-voltage generating means including a d.c. power source, an inverter and a switch interposed between the d.c. power source and the inverter to control the output supplied from the high-voltage generating means. Connected to the high-voltage generating means are three cold cathode--ray tubes in parallel for generating three colors, red, green and blue, and connected in series to respective cold cathode--ray tubes are switching means which may be bi-directional thyristors which are readily available, inexpensive, resistant to high voltages and permit a current to flow in both directions. By controlling both the output of the inverter and ON/OFF actions of the switching means in combination, lighting of cold cathode-ray tubes can be controlled by using a single inverter.
Macrae & Co.
Okita Masaya
LandOfFree
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