Importance

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Abstract

A light emitting diode (LED) assembly with a current blocking layer along the periphery of the LED is disclosed. In one embodiment, the LED assembly includes an LED comprising a light emitting layer disposed between a first layer having a first conductivity type and a second layer having a second conductivity type. The LED assembly further includes a contact electrically coupled to the first layer and a current blocking layer formed along a periphery of the LED at an interface with the contact, and covering a peripheral portion of the first contact. The current blocking layer forms a non-ohmic connection with the contact, thereby limiting the current injection between the contact and the first layer of the LED. In one embodiment, the current blocking layer surrounds a portion of the first layer, defining a portion of the light emitting layer that emits photons. In one embodiment, the current blocking layer comprises a transparent insulating layer between the LED and the contact. In one embodiment, the current blocking layer comprises a plasma treated region of the first layer of the LED.

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First Claim