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News-Spot | IP, Reports & Roadmaps | Mar 01, 2002

IST Obtains Further UK LED & OLED Driver Patent to Improve Efficiency and Reduce Ripple Current Through SSL Loads

Integrated System Technologies (IST) Ltd announced today the issuing by the UK Patent Office of its patent that covers power supply technologies for the rapidly expanding LED and OLED lighting sector. Read more »

IP, Reports & Roadmaps

Flip-chip light emitting diode with high light-emitting efficiency

Schematic drawing of a flip-chip type LED in accordance with the present invention. A flip-chip light emitting diode with high light-emitting efficiency is disclosed. The LED includes a transparent conductive layer, an oxide layer, a reflective metal layer, a conductive layer, and a protective diffusion layer sequentially disposed over a p-type semiconductor layer. Thereby, light emitting from a light-emitting layer toward the p-type semiconductor layer is reflected and penetrating a transparent substrate and emitting outwards. Thus the problem of light shielded from the flip-chip type LED is solved and the light-emitting efficiency is improved. Furthermore, the present invention disposes the LED chip in a face-down orientation on a conductive substrate by flip-chip technology so as to enhance heat-dissipation efficiency of the LED. Read more »