| 摘要 |
<p>A light emitting diode (LED) display device (20) has a semiconductor chip (23) which is capable of emitting light when energised and mounted in a cylindrical cavity (25) of a reflector (24) and encapsulated with epoxy resin forming a hemispherical covering (26) which gives greater visible light in comparison with conventional LED devices. The light emitted by the semiconductor chip (23) in randomly reflected by the cylindrical wall of the cylindrical cavity (25) of the reflector (24) and the epoxy resin covering (26) to become effectively visible. More than one semiconductor chip may be disposed in one cylindrical cavity. <IMAGE></p> |
