The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2001
Filed:
Feb. 19, 1999
William R. Dunn, Alpharetta, GA (US);
James M. Brannen, Lawrenceville, GA (US);
Other;
Abstract
The present invention is a method for cooling a lamp backlighting module of a liquid crystal display. A preferred method of the present invention begins by providing a predetermined power input to a lamp. As power is provided to the lamp, the temperature of the lamp is monitored. When the temperature of the lamp rises to a first predetermined temperature, one or more fans are turned on which are adapted to dissipate the heat generated by the lamp. After the fan(s) cool the lamp to a second, lower predetermined temperature, the fan(s) are turned off. By using a fan to dissipate heat generated by a lamp backlighting module, the present invention may maintain the temperature of the lamp within a desired range. As a result, the present invention preferably increases the reliability and performance of the liquid crystal display. In particular, a preferred embodiment of the present invention minimizes the power necessary to achieve optimal luminance, and it enables the lamp to constantly produce optimal luminance for a constant power input.