Light-emitting diode with textured substrate

Semiconductor device manufacturing: process – Making device or circuit emissive of nonelectrical signal

Reexamination Certificate

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Details

C438S024000, C438S029000, C438S042000

Reexamination Certificate

active

08058082

ABSTRACT:
A light-emitting diode (LED) device is provided. The LED device has raised semiconductor regions formed on a substrate. LED structures are formed over the raised semiconductor regions such that bottom contact layers and active layers of the LED device are conformal layers. The top contact layer has a planar surface. In an embodiment, the top contact layers are continuous over a plurality of the raised semiconductor regions while the bottom contact layers and the active layers are discontinuous between adjacent raised semiconductor regions.

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patent: WO 2006/035212 (2006-04-01), None
Yamada, M., et al., “InGaN-Based Near-Ultraviolet and Blue-Light-Emitting Diodes with High External Quantum Efficiency Using a Patterned Sapphire Substrate and a Mesh Electrode,” The Japan Society of Applied Physics, Japanese Journal of Applied Physics, Dec. 15, 2002, vol. 41, pp. L1431-L1433.
Kim, J.K., et al., “Light Extraction in GaInN Light-Emitting Diodes using Diffuse Omnidirectional Reflectors,” Journal of the Electrochemical Society, 153 (2) 2006, pp. G105-G107.

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