Abstract: An organic electroluminescent device comprises a lower electrode provided on the surface of a color filter, wherein the lower electrode is directly provided on the surface of an overcoat layer. An isolation layer is further provided between the lower electrode and the overcoat layer, such that the connection between the lower electrode and the color filter can be proceeded beneficially. Besides, the situation of barrier layer broken will be not happened. Thus, the structure completeness of the organic electroluminescent device can be held, and the production yield of that can be improved.

Abstract: A light emitting diode (LED) includes a heat dissipation structure characterized by having a heat dissipating fluidic coolant filled in a hermetically sealed housing where at least one LED chip mounted on a metallic substrate is dwelled inside. The heat dissipation structure is configured with a metallic wall erected from the metallic substrate, which is used to hold a transparent cap of the sealed housing in correct position. Furthermore, the erected wall surrounds in proximity with the at least one LED chip, so that the joule heat generated therefrom can be quickly spread out, through the heat dissipating fluidic coolant, to the erected wall, and then diffused along the wall down to the metallic substrate which adjoins with a larger external heat sink for draining the heat, thus preventing the at least one LED from overheating.