Illumination device and display device

摘要

A display device has at least one light source for emitting light and a light guide plate having a first surface for inputting light emitted from the at least one light source, a second surface for outputting illumination light, and a third surface opposite to the second surface. A display element having dots for displaying image information is arranged over the second surface of the light guide plate for receiving the illumination light. At least two microprisms are arranged on the third surface of the light guide plate in areas overlapping the dots of the display element. Each microprism has a height in the range of from 1 μm to 10 μm and a mirror surface for reflecting light emitted from the at least one light source. Each mirror surface has a base disposed perpendicular to a light path of the light emitted from the at least one light source.