LED structure and manufacturing method thereof

• Main Authors: WANG DUXIANG, KE WEIFAN, PENG YUREN, JIA YUEHUA, GUO HUANSHAO
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

The invention provides an LED structure and a manufacturing method thereof. The LED structure comprises a first conductive type semiconductor layer, an active layer, a second conductive type semiconductor layer, an insulating layer, a contact layer and other functional layers. According to the LED structure, the insulating layer is arranged in the current expansion layer of the second conductive type semiconductor layer, so that light absorption of the second conductive type semiconductor layer can be reduced, the insulating layer is closer to the active layer, a better current blocking effect can be achieved, current is limited in an effective light emitting area, and meanwhile, the height difference between the insulating layer and the surface of the current expansion layer is reduced, so that the consumption of filling metal is reduced when the contact layer is formed, and the manufacturing cost is reduced. In addition, the surface of the contact layer is flush with the surface of the insulating layer, a f