Patent ID: 9632356
Date: 2017-04-25
CPC Classifications: G02F

Claim:
1. A reflection plate comprising: a bottom portion; a side wall portion that extends from circumferences of the bottom portion; and a light source portion disposed on the bottom portion, wherein an upper surface of the bottom portion includes a diffusion reflection surface and an inner surface of the side wall portion includes a mirror reflection surface, the diffusion reflection surface being configured to reflect incident light to multiple directions whereas the mirror reflection surface is configured to reflect the incident light to one direction, wherein the side wall portion comprises a first side wall and a second side wall that face each other, wherein the first side wall and the second side wall comprise a first sub-side wall that extends upwardly from the circumferences of the bottom portion and a second sub-side wall that extends from an upper end of the first sub-side wall, wherein the entire upper surface of the bottom portion and the entire inner surface of the first sub-side wall is the diffusion reflection surface and the entire inner surface of the second sub-side wall is the mirror reflection surface, and wherein a third angle, which is an internal angle that is formed by an extension line of the inner surface of the second sub-side wall and the upper surface of the bottom portion, are defined, and the third angle is a right angle.