Abstract: Provided is a vehicle-road cooperation street lamp for an urban road. The vehicle-road cooperation street lamp for an urban road comprises a vehicle-road cooperation street lamp body, wherein a first supporting plate is transversely arranged on the front side of the top of the vehicle-road cooperation street lamp body, a transmission cavity is transversely formed in the first supporting plate, a first electric telescopic rod is transversely arranged in the inner cavity of the transmission cavity and located on the outer wall of the vehicle-road cooperation street lamp body, and a rack plate is transversely arranged on the front side of the first electric telescopic rod and located in the transmission cavity.

Abstract: Packaging structures for lateral high voltage gallium nitride (GaN) devices achieve electrical isolation while also maintaining thermal dissipation is provided. The electrical isolation reduces or eliminates vertical leakage current, improving high voltage performance with the semi-insulating layer for adhering the lateral semiconductor power device chip to the back-plate. The packages may use or be compatible standards such as JEDEC, which reduces packaging cost and facilitates implementation of the packaged devices in conventional circuit design approaches.