Light emitting diode display that does not require epoxy encapsulation of the light emitting diode

摘要

A display having a cover element that is fastened to a base element is disclosed. The base element includes a substrate having a die with a semiconductor light source. The die is covered by a transparent protective layer. The cover element includes an opaque layer having an opening positioned to allow the die and the protective layer to protrude through the opening in the bottom surface but remain below the level of the top surface. A transparent window covers the opening above the die and the protective layer. The transparent window defines a pattern that is illuminated by the light source and visible from above the top surface of the cover element. A fastener affixes the base element to the cover element. The opaque layer and transparent window can be made in a two-step molding process. The display avoids the problems associated with encapsulating LEDs in an epoxy.