THERMAL DESIGN FOR HIGH OUTPUT LED BACKLIGHTS

摘要

The present disclosure includes a LED illuminator that improves heat conduction through a LCD module's rear cover. The disclosed LED illuminator integrates a heat dissipation device for reducing thermal spikes on the LCD glass and in the LED packages by dissipating heat generated within the LCD module. The LED illuminator is built on a metal heat sink, typically made of copper or aluminum, that includes thermal fins along its length which protrude through the LCD module's rear cover for coupling heat into a heat dissipating portion of the improved LCD module.

主权项

1. A liquid crystal display (“LCD”) module that includes a rear cover having slots formed therethrough, the LCD module comprising:
a. a light emitting diode (“LED”) strip illuminator having:
i. LEDs mounted thereon; andii. thermal fins that extend through the slots formed through the rear cover of the LCD module; b. a thermo-mechanical coupler:
i. located outside the LCD module; andii. attached to the thermal fins; and c. a heat diffusing element for spreading the heat away from the LED strip illuminator that is selected from a group consisting of:
i. a thermal spreader;ii. a finned heat sink; andiii. a metal plate.