Patent ID: 9103957
Filing Date: 2015-08-11
Classification: G02B

Abstract:
1. A back light module, comprising: a bezel having a carrier surface, a first back surface and at least one through hole, the carrier surface and the first back surface being opposite to each other, and the through hole passing through the bezel from the carrier surface to the first back surface; a first circuit board disposed on the first back surface of the bezel and having a first wiring surface and a second back surface opposite to the first wiring surface, the second back surface facing to the first back surface, and the first circuit board having at least one first conductive pin set disposed on the second back surface; and a light source assembly disposed on the carrier surface of the bezel, and the light source assembly comprising: a second circuit board comprising a circuit layout and at least one second conductive pin set, the second circuit board having a second wiring surface and a third back surface opposite to the second wiring surface, the third back surface facing to the carrier surface, the circuit layout being located on the second wiring surface, the second conductive pin set being located on the third back surface and electrically connected to the first conductive pin set via the through hole of the bezel, and the circuit layout being located on the second wiring surface and electrically connected to the second conductive pin set; and a plurality of light emitting elements disposed on the second wiring surface of the second circuit board and electrically connected to the circuit layout; wherein the first circuit board has at least one positioning hole adjacent to the first conductive pin set, and the second circuit board further comprises a positioning bump disposed on the third back surface and adjacent to the second conductive pin set and joined to the positioning hole via the through hole.