Slim frame backlight module

摘要

The present invention provides a slim frame backlight module, which includes a backplane, a backlight source arranged inside the backplane, a side reflector plate arranged inside the backplane, and a light guide plate arranged inside the backplane. The light guide plate includes a bottom surface, a top surface opposite to the bottom surface, and at least one light incident surface connecting between the bottom surface and the top surface. The light incident surface is set inwardly inclined with respect to the top surface, so that the light incident surface and the top surface form therebetween an included angle less than 90°. Light emitting from the backlight source can be reflected by the side reflector plate to the light incident surface or is directly projected to the light incident surface to transmit through the light incident surface into the light guide plate.

主权项

1. A slim frame backlight module, comprising a backplane, a backlight source arranged inside the backplane, a side reflector plate arranged inside the backplane, and a light guide plate arranged inside the backplane, the light guide plate comprising a bottom surface, a top surface opposite to the bottom surface, and side surfaces connecting between the bottom surface and the top surface, the side surfaces comprising at least one light incident surface, the light incident surface being a planar surface set inwardly inclined with respect to the top surface, so that the light incident surface and the top surface form therebetween an included angle less than 90°, light emitting from the backlight source being reflected by the side reflector plate to the light incident surface or being directly projected to the light incident surface to be refracted by the light incident surface into the light guide plate;
wherein the side reflector plate comprises a reflection surface that is planar and uncurved across entire span of the reflection surface, the reflection surface of the side reflector plate being inclined so that the inclined reflection surface of the side reflector plate and the inclined light incident surface of the light guide plate collectively define an included angle therebetween, the backlight source being arranged between and below the reflection surface of the side reflector plate and the light incident surface of the light guide plate and beneath the included angle; and wherein the backlight source is arranged below the reflection surface of the side reflector plate and the light incident surface of the light guide plate in such a way that the backlight source is at least partly located under the top surface of the light guide plate and a portion of light emitting from the backlight source directly transmits through the light incident surface of the light guide plate and a remaining portion of the light emitting from the backlight source is reflected by the reflection surface of the side reflector plate toward the light incident surface of the light guide plate.