A light-emitting device operating on a high drive voltage and a small drive current. LEDs (1) are two-dimensionally formed on an insulating substrate (10) of e.g., sapphire monolithically and connected in series to form an LED array. Two such LED arrays are connected to electrodes (32) in inverse parallel....http://www.google.de/patents/US8084774?utm_source=gb-gplus-sharePatent US8084774 - Light emitting device having light emitting elements
