LED light source
AssigneeEpistar Corporation
InventorsMin-Hsun Hsieh, Chou-Chih Yin, Chia-Liang Hsu, Jen-Shui Wang, Chia-Fen Tsai, Chien-Yuan Wang
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Abstract
A tube type light emitting diode light source including a light source generator, a light guide and a diffuser is provided. The light source generator includes LEDs arranging in a line. The light guide has a grooved light incident surface and a grooved light-guiding surface. The grooved light incident surface encompasses the LEDs, and the grooved light-guiding surface is adapted for changing the propagating direction of an incident light. The diffuser covers the light guide.
Claims18
A tube type light emitting diode light source, comprising:
- a light source generator comprising a plurality of LEDs in a strip;
- a strip type light guide having a grooved light incident surface and a grooved light-guiding surface and substantially covering the light source generator;
- and
- a strip type diffuser encapsulating the strip type light guide and the LEDs.
A backlight module of a flat panel display, comprising:
- a plurality of tube type LED light sources, wherein each tube type LED light source comprises:
- a light source generator comprising a plurality of LEDs in a strip;
- a strip type light guide having a grooved light incident surface and a grooved light-guiding surface and substantially covering the light source generator;
- and
- a strip type diffuser encapsulating the strip type light guide and the LEDs;
- and
- a prism sheet on said plurality of tube type LED light sources.
Dependencies are inferred from the claim text.