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Priority to TW93141646ApriorityCriticalpatent/TWI258038B/en
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Publication of TWI258038BpublicationCriticalpatent/TWI258038B/en
A direct type backlight module is applied to a LCD. It contains an optical coupling lens, a diffuser, a CCFL and a reflection bottom plate in sequence. The optical coupling lens is a cylinder and Fresnel type. The CCFL emits light and the light intensity distribution is controlled by the optical coupling lens. The reflection bottom plate reflects light to the diffuser and then the diffuser scatters and guides light to the optical coupling lens, so as high uniformity and brightness light, simple structure and process are provided and also the production cost is reduced.
TW93141646A2004-12-312004-12-31A direct type backlight module
TWI258038B
(en)