| 摘要 |
PURPOSE: An integrated stack type liquid guide plate is provided to increase the diffusion efficiency without an additional prism or diffusion film and easily control diffusion density. CONSTITUTION: A stack type liquid guide plate is formed of a plurality of light transmissive plate members(10). Diffusion patterns are formed in rear surfaces of the plate members respectively to diffuse light incident to sides of the plate members from a light source(40) to a front. The diffusion patterns are formed to have uniform brightness distribution.
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