METHOD FOR COOLING A LAMP BACKLIGHTING MODULE OF A LIQUID CRYSTAL DISPLAY

WIPO Patent Application WO1999043014

A3

The present invention is a method for cooling a lamp backlighting module (14) of a liquid crystal display (10). A preferred method of the present invention begins by providing a predetermined power input to a lamp (14). As power is provided to the lamp (14), the temperature of the lamp (14) is monitored. When the temperature of the lamp (14) rises to a first predetermined temperature, one or more fans (26, 28) are turned on which are adapted to dissipate the heat generated by the lamp (14). After the fan(s) (26, 28) cool the lamp (14) to a second, lower predetermined temperature, the fan(s) (26, 28) are turned off. By using a fan (26, 28) to dissipate heat generated by a lamp backlighting module (14), the present invention may maintain the temperature of the lamp (14) within a desired range. As a result, the present invention preferably increases the reliability and performance of the liquid crystal display (10). In particular, a preferred embodiment of the present invention minimizes the power necessary to achieve optimal luminance, and it enables the lamp (14) to constantly produce optimal luminance for a constant power input.

WO/2000/070641	VORTEX COOLED LAMP BOX FOR FIBER OPTIC ILLUMINATION SYSTEMS
JP2005316177	LAMP UNIT AND PROJECTION TYPE DISPLAY DEVICE

DUNN WILLIAM R
BRANNEN JAMES M

PCT/US1999/003621

October 14, 1999

February 19, 1999

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ADVANCED DISPLAYS CORP (US)

F21V29/02; G02F1/13357; (IPC1-7): H01J1/02; H01J1/62; H01J7/24; H01J17/16; H01J17/20; H01J61/12; H01J61/20; H01J61/52; H01J63/04; H01K1/58

US5907222A	1999-05-25
US5059860A	1991-10-22
US4978890A	1990-12-18
US3971968A	1976-07-27

See also references of EP 1057197A4

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