公开(公告)号：US20170168222A1

公开(公告)日：2017-06-15

申请号：US14890448

申请日：2015-07-23

Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.

Inventor： Shih-hsiang CHEN ,  Chengwen QUE ,  Dehua LI

IPC: F21V8/00

CPC classification number: G02B6/0046 ,  G02B6/00 ,  G02B6/0055 ,  G02B6/0068 ,  G02B6/0076 ,  G02B6/0085 ,  G02B6/0088 ,  G02F1/133615

Abstract: The disclosure is related to a backlight module and a liquid crystal display device. The backlight module comprises a first light guiding plate, a second light guiding plate and a light source. Wherein, the second light guiding plate is disposed below the first light guiding plate. The second illuminating surface of the second light guiding plate is adjacent and connected with the first bottom surface of the first light guiding plate. The second bottom surface inclines toward the second illuminating surface along the direction away from the second incident surface. The light source is configured for providing an incident light, the incident light passes through the first light guiding plate and the second light guiding plate and then illuminates from the first illuminating surface. The disclosure can lower the cost of the components of the product by the above methods.