Patent ID: 8926163
Filing Date: 2015-01-06
Classification: G02B,G02F

Abstract:
1. A backlight module, comprising; a substrate, a light guiding plate, a first pillar, a light source, at least two separating pieces, and an elastic piece; wherein the light guiding plate is arranged on the substrate, the light guiding plate comprises a first edge, a second edge, a third edge and a fourth edge connected to each other head to tail, the light source is arranged adjacent to the first edge, the second edge or the fourth edge of the light guiding plate has a fixing slot or a fixing hole; the light source comprises a base and a lighting assembly arranged on the base, the lighting assembly faces toward the first edge of the light guiding plate, the separating pieces are arranged between the first edge of the light guiding plate and the base of the light source such that the first edge of the light guiding plate and the lighting assembly of the light source have a minimum distance; at least portions of the first pillar are fixed on the fixing slot or the fixing hole of the light guiding plate, at least portions of the first pillar protrudes from the light guiding plate so that the protruded portions of the first pillar pass through a crack of the substrate; the elastic piece is arranged on a first surface of the substrate, the first surface is farther to the light guiding plate than the other surface, the elastic piece comprises a first end, and a second end, the first end of the elastic piece connects one end of the first pillar passing through the crack of the substrate, the second end connects to the substrate directly or indirectly, and the second end of the elastic piece is farther to the first edge of the light guiding plate than the first end; the elastic piece pushes the light guiding plate via the first pillar to move toward the right source until the distance between the light guiding plate and the lighting assembly of the light source equals to the minimum distance, and the elastic piece remains in a compressed state; a lengthy direction of the crack is the same with a moving direction of the light guiding plate toward the light source; and a thickness of the at least two separating pieces is equal to or larger than the thickness of the light guiding plate, and the at least two separating pieces respectively correspond to two sides of the first edge of the light guiding plate.