| 主权项 |
1. A backlight module, comprising:
a half-wave plate having a disposing surface; a light guide plate having a plurality of light guide units, and the light guide units are arranged adjacently on the disposing surface; and a light source irradiating a light into the light guide plate in a direction vertical to a normal line of the disposing surface; wherein, each of the light guide units respectively comprises: an optical element having a light entrancing surface for the light; a first transparent plate disposed on the optical element, and having a first surface, wherein an angle between the first surface and the light entrancing surface is less than 90 degrees; a splitter disposed on the first surface, and reflecting a portion of the light to the half-wave plate; and a second transparent plate disposed on the splitter, and having a light penetrating surface parallel to the light entrancing surface. |
