Abstract: A reflective sheet comprises a plurality of perforations for extending a plurality of light-emitting elements therein, the reflective sheet further comprises a central line passing through its center, at least one first dimming area, and at least one second dimming area, and the distance between the at least one first dimming area and the central line is smaller than the distance between the at least one second dimming area and the central line. The light-emitting elements are distributed in the at least one first dimming area and the at least one second dimming area, the at least one first dimming area has a first dimming means, the at least one second dimming area has a second dimming means, the dimension of the first dimming means is different from the dimension of the second dimming means.

Abstract: A reflective sheet comprises a plurality of perforations for extending a plurality of light-emitting elements therein, the reflective sheet further comprises a central line passing through its center, at least one first dimming area, and at least one second dimming area, and the distance between the at least one first dimming area and the central line is smaller than the distance between the at least one second dimming area and the central line. The light-emitting elements are distributed in the at least one first dimming area and the at least one second dimming area, the at least one first dimming area has a first dimming means, the at least one second dimming area has a second dimming means, the dimension of the first dimming means is different from the dimension of the second dimming means.

Abstract: A light guide plate and a light source module are provided. Light guide plate includes a main body and microstructures disposed on the main body. The main body includes a light-incident surface and a light-emitting surface. Each of the microstructures includes a first optical surface, a second optical surface, a third optical surface and a fourth optical surface. The first optical surface and the second optical surface are inclined in relation to the light-incident surface. A first angle is included between the first optical surface and the light-emitting surface. A second angle is included between the second optical surface and the light-emitting surface. The third optical surface and the fourth optical surface connect the first optical surface and the second optical surface. A third angle is included between the third optical surface and the light-emitting surface. A fourth angle is included between the fourth optical surface and the light-emitting surface.