Paper No 9.4: Heat Dissipation Performance of Laser Backlight for Liquid Crystal Television Displays

Abstract

The authors have developed the laser backlight for displays that uses laser diodes (LDs) for the red light sources. While laser beams are favorable because of their high color purity, they develop extremely disadvantageous thermal characteristics. Therefore, thermal management is a critical issue for LDs used as display light sources. As for the backlight used on a large screen flat panel display in particular, where light sources with high heat flux are laid out in a dispersed fashion, the cooling performance of the light sources directly influences the product performance and quality. The authors used a CFD simulation to review a cooling system optimum for the laser backlight.