Abstract: A method for forming a high electron mobility transistor is disclosed. A mesa structure having a channel layer and a barrier layer is formed on a substrate. The mesa structure has two first edges extending along a first direction and two second edges extending along a second direction. A passivation layer is formed on the substrate and the mesa structure. A first opening and a plurality of second openings connected to a bottom surface of the first opening are formed and through the passivation layer, the barrier layer and a portion of the channel layer. In a top view, the first opening exposes the two first edges of the mesa structure without exposing the two second edges of the mesa structure. A metal layer is formed in the first opening and the second openings thereby forming a contact structure.

Abstract: A face identification camera module includes a circuit board, a camera device, at least one infrared LED light-emitting unit, an image processor and a connector. The respective units are disposed on a first side of the circuit board and electrically connected with the circuit board. The infrared LED light-emitting unit is disposed on left and right sides of the camera device. The infrared LED light-emitting unit serves to enhance the brightness, uniformity and contrast of the image so that a higher identification ratio can be achieved and a higher-definition face feature identification effect can be obtained by the camera device.

Abstract: A face identification module includes a substrate. The substrate has a first plane face. On the first place face are disposed a first lens assembly, a second lens assembly, an infrared LED assembly and an image processor, which are respectively electrically connected with the substrate. The infrared LED assembly includes a first infrared LED and a second infrared LED. The first infrared LED and the second infrared LED are adjacently disposed on left and right sides of the second lens assembly. In the face identification module, the video function and the face identification function are integrated to save arrangement space and achieve a multiplex face identification module.

Abstract: A face identification camera module includes a circuit board, a camera device, at least one infrared LED light-emitting unit, an image processor and a connector. The respective units are disposed on a first side of the circuit board and electrically connected with the circuit board. The infrared LED light-emitting unit is disposed on left and right sides of the camera device. The infrared LED light-emitting unit serves to enhance the brightness, uniformity and contrast of the image so that a higher identification ratio can be achieved and a higher-definition face feature identification effect can be obtained by the camera device.

Abstract: An LED lamp includes a frame, a power module, an envelope, an LED module, two holders, and a waterproof connecter. The frame includes a tube having an electrical section and a reflector. The power module is received in the electrical section. The envelope is engaged with the reflector to cooperatively define an optical section. The LED module is received in the optical section and electrically connects with the power module. The holders are mounted at two ends of the frame to prevent external hydrosphere from entering the LED lamp. Each of the holders includes a first cover and a second cover. The first covers engage with opposite ends of the electrical section. The second covers engage with opposite ends of the optical section. The waterproof connecter is coupled to one of the first covers.

Abstract: An LED lamp includes a frame, a power module, an envelope, an LED module, two holders, and a waterproof connecter. The frame includes a tube having an electrical section and a reflector. The power module is received in the electrical section. The envelope is engaged with the reflector to cooperatively define an optical section. The LED module is received in the optical section and electrically connects with the power module. The holders are mounted at two ends of the frame to prevent external hydrosphere from entering the LED lamp. Each of the holders includes a first cover and a second cover. The first covers engage with opposite ends of the electrical section. The second covers engage with opposite ends of the optical section. The waterproof connecter is coupled to one of the first covers.