BACKLIGHT STRUCTURES AND BACKLIGHT ASSEMBLIES FOR ELECTRONIC DEVICE DISPLAYS

摘要

An electronic device may have a display with backlight structures. The backlight structures may produce backlight that passes through the display layers in the display. The backlight structures may include a light guide plate that distributes light across the display layers. A light source such as a light-emitting diode light source may be used to provide light to the light guide plate. In one suitable embodiment, a light guide structure having a bend may be coupled between the light source and the light guide plate and may be used to guide the light from the light source to the light guide plate via total internal reflection. In another suitable embodiment, the light-emitting diodes may be mounted on a flexible printed circuit that is curled into a spring element. The flexible printed circuit may be used to bias the light-emitting diodes against the edge of the light guide plate.