BACKLIGHT ARRANGEMENT FOR HIGHLIGHTING A DISPLAY PANEL

摘要

A backlight assembly (100) comprising at least one light source (101) and an optically transparent wave guide plate (102), which wave guide plate comprises a front surface (103), an opposing back surface (104) and a surface (105) for receiving light from said at least one light source (101), connecting said front and back surfaces, is provided. The thickness of the wave guide plate (102) decreases with the distance from said surface (105) for receiving light, and the backlight assembly (100) comprises means (106) for controlling the angle of incidence of light from said at least one light source on said surface for receiving light. By varying the angle of incidence on the surface for receiving light, the location on the wave guide where the light is extracted from the wave guide can easily be controlled.