| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light diffusion reflection sheet which has light transmission property capable of converting incident light to diffusion light, distributing the quantity of the light to reflection light and transmission light, and adjusting the proportion of the distribution in a wide range. <P>SOLUTION: The light diffusion reflection sheet can convert the incident light to the diffusion light and can distribute the quantity of the light to the reflection light and the transmission light in a wider distribution range by using the light diffusion reflection sheet having a diffusion reflection layer comprising porous particles, wherein the total light transmittance is 80% or less. The light diffusion reflection sheet is arranged on the sub screen side adjacent to a light guide plate, thereby, the uniform diffusion light hardly causing brightness irregularity can be supplied to both of a main screen and a sub screen with such a quantity of the light as to produce the desired brightness balance and, moreover, the brightness balance can be adjusted in the wide range. <P>COPYRIGHT: (C)2009,JPO&INPIT |
