Patent ID: 9658488
Date: 2017-05-23
CPC Classifications: G02F

Claim:
1. A backlight module, comprising: a light source module, comprising at least one light source; an optical control layer disposed on the light source module, is configured to distribute light generated from the light source to emit through different positions; the optical control layer comprises: a first optical film comprises a plurality of first light exit openings; wherein the first optical film has a first overlap area on a first side, the first overlap area has at least one first inner opening; and a second optical film comprises a plurality of second light exit openings continuously disposed on the first side of the first optical film; wherein a second side of the second optical film adjacent to the first optical film has a second overlap area overlapped with the first overlap area, the second overlap area has at least one second outer opening corresponding to the first inner opening; wherein an opening edge of the second outer opening is around an opening edge of the first inner opening out of a project position on the second optical film.