WHITE LED HAVING MICRO LENS WITH DOUBLE LAYERS

摘要

PURPOSE: A white light emitting diode including a micro lens with a dual layered structure is provided to obtain various light paths by coating the micro lens with different refractive indexes with one or more of red fluorescent and green fluorescent. CONSTITUTION: An N-type semiconductor layer(120), an active layer(130), and a P-type semiconductor layer(140) are successively formed on a substrate(110) in order to prepare a blue light emitting chip. A transparent electrode layer is formed on the P-type semiconductor layer. A positive electrode(171) is formed on the transparent electrode layer. A negative electrode(173) is formed by etching the uppermost surface of the blue light emitting diode chip to the N-type semiconductor layer. A micro lens including a first micro lens(300) and a second micro lens(500) is formed on the transparent electrode layer.