| 主权项 |
1. A backlight module, comprising:
a light guide plate; a substrate, disposed at the bottom of a light incident side of said light guide plate; a light source, disposed on said substrate; Tangent a reflective element, used to reflect the light beam emitted from said light source to a light incident plane of said light guide plate; and a reflective sheet, disposed at the bottom of said light guide plate, used to reflect the light beam onto a lower surface of said light guide plate; said light guide plate and said reflective sheet being joined by a double coated film that is set up along the edge of the lower surface of said light guide plate where a light exit plane of said light source, the lower surface of said light guide plate and a light exit plane of said light guide plate are parallel to one another and the light exit plane of said light source is placed in between the lower surface of said light guide plate and the light exit plane of said light guide plate; the width of the double coated film being D, the distance between the lower surface of said light guide plate and the light exit plane of said light source being H, and the refraction index of said light guide plate being n where the ratio of H to D is greater than 0.8*tan[arc sin(1/n)]; the double coated film being set up along the edge of the incident side of the bottom. |
