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US 8,283,684 B2Granted
LED semiconductor body and use of an LED semiconductor body
AssigneeOSRAM Opto Semiconductors GmbH
InventorsReiner Windisch, Ralph Wirth, Stefan Groetsch, Georg Bogner, Guenter Kirchberger, Klaus Streubel
Life of this patent
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Abstract
An LED semiconductor body includes a number of at least two radiation-generating active layers. Each active layer has a forward voltage, wherein the number of active layers is adapted to an operating voltage in such a way that the voltage dropped across a series resistor connected in series with the active layers is at most of the same magnitude as a voltage dropped across the LED semiconductor body. The invention furthermore describes various uses of the LED semiconductor body.
Claims27
A light emitting device comprising:
- an LED semiconductor body comprising a number of radiation-generating active layers, the number being at least two;
- and
- a resistor connected in series with the active layers;
- wherein, the number of active layers is adapted to an operating voltage applied to the light emitting device in such a way that a voltage drop across the resistor is at most of the same magnitude as a voltage drop across the LED semiconductor body;
- and
- wherein the LED semiconductor body is integrated with the series resistor into a chip.
3 more elements
Dependencies are inferred from the claim text.