| 摘要 |
A backlight source, comprising: a light guide plate (5); a diffusion sheet (4) provided at an out-light side of the light guide plate (5); and a light bar located at an in-light side of the light guide plate (5), wherein the light bar comprises an LED lamp (6) and a flexible circuit board connected to the LED lamp (6). The flexible circuit board comprises: a flexible circuit board substrate (1), and a first solder resist layer (2) and a second solder resist layer (3) respectively provided on two opposite faces of the flexible circuit board substrate (1), wherein the first solder resist layer (2) is provided on a face of the flexible circuit board substrate (1) close to the light guide plate (5), the second solder resist layer (3) is provided on a face of the flexible circuit board substrate (1) away from the light guide plate (5), and the first solder resist layer (2) is connected with the LED lamp (6). The face of the flexible circuit board substrate (1) on which the second solder resist layer (3) is provided comprises a first region where the second solder resist layer (3) is provided and a second region where the second solder resist layer (3) is not provided, and the second region is located at the side close to the light guide plate (5). One end of the diffusion sheet (4) close to the light bar has a connecting portion partially covering or completely covering the second region. |
