Patent ID: 9612388
Date: 2017-04-04
CPC Classifications: G02B,G02F

Claim:
1. A front light guide module for a display, comprises: a light guide plate having a side surface, a first surface and a second surface opposite to the first surface, the light guide plate having a first refractive index; a light source disposed adjacent to the side surface and configured to emit a light into the light guide plate; a functional material layer disposed at a side adjacent to the first surface, the functional material layer having a third refractive index; and a first adhesive layer interposed between the light guide plate and the functional material layer, and configured to adhere the light guide plate with the functional material layer, the first adhesive layer having a second refractive index; wherein the first refractive index is greater than the second refractive index, and the second refractive index is greater than the third refractive index, wherein a direction of refractive index increase is from the functional material layer to the light guide plate, which is adjacent to and closest to the light source.