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US07884388B2 Light emitting diode having a first GaN layer and a first semiconductor layer each having a predetermined thickness and fabrication method therof 有权
具有第一GaN层和各自具有预定厚度的第一半导体层的发光二极管和制造方法

Light emitting diode having a first GaN layer and a first semiconductor layer each having a predetermined thickness and fabrication method therof
Abstract:
A light emitting diode (LED) and a method for fabricating the same, capable of improving brightness by forming a InGaN layer having a low concentration of indium, and whose lattice constant is similar to that of an active layer of the LED, is provided. The LED includes: a buffer layer disposed on a sapphire substrate; a GaN layer disposed on the buffer layer; a doped GaN layer disposed on the GaN layer; a GaN layer having indium disposed on the GaN layer; an active layer disposed on the GaN layer having indium; and a P-type GaN disposed on the active layer. Here, an empirical formula of the GaN layer having indium is given by In(x)Ga(1−x)N and a range of x is given by 0
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