| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light diffusion board made of a polycarbonate resin for direct-type backlight in which the regulation of desired board thickness and optical properties is facilitated, also, the luminance of a luminescent surface improves, and the change in the color tone of an image is reduced. <P>SOLUTION: The light diffusion laminated board made of a polycarbonate resin for direct-type backlight is composed of a plurality of layers and has a thickness of 1 to 5 mm, and comprises: (1) a polycarbonate resin film layer with a thickness of 0.05 to 0.5 mm formed from a polycarbonate resin composition obtained by incorporating a light diffusion agent with the average particle diameter of 0.1 to 50 μm into a polycarbonate resin, and, in which, regarding the weight ratio of the polycarbonate resin and the light diffusion agent, with the total of both as 100 wt.%, the polycarbonate resin is 99.9 to 70 wt.% and the light diffusion agent is 0.1 to 30 wt.%; and (2) a transparent polycarbonate resin sheet layer with a thickness of 0.5 to 4.95 mm. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
