Abstract: Provided is a package structure and a method of forming the same. The package structure includes a semiconductor package, a stacked patch antenna structure, and a plurality of conductive connectors. The semiconductor package includes a die. The stacked patch antenna structure is disposed on the semiconductor package, and separated from the semiconductor package by an air cavity. The plurality of conductive connectors is disposed in the air cavity between the semiconductor package and the stacked patch antenna structure to connect the semiconductor package and the stacked patch antenna structure.

Abstract: A NAND flash memory and method for managing data reads a header from each storage area, and identifies each storage area. Data of the primary storage area is updated if the primary storage area exists, and an operating system in the NAND flash memory is initiated according to the updated data in the primary storage area, or in the secondary storage area if the primary storage area does not exist but a secondary storage area does.

Abstract: A NAND flash memory and method for managing data reads a header from each storage area, and identifies each storage area. Data of the primary storage area is updated if the primary storage area exists, and an operating system in the NAND flash memory is initiated according to the updated data in the primary storage area, or in the secondary storage area if the primary storage area does not exist but a secondary storage area does.

Abstract: An oil cylinder has a valve body, an oil pressure chamber, and an oil storage chamber. A shaft extends from the oil pressure chamber. The valve body has a piston chamber, an arc-shaped through hole, an enlarged hole receiving a rotating post, a first oil passage, a second oil passage, a third oil passage, a fourth oil passage, an oil hole, a first channel, and a second channel. A piston is disposed in the piston chamber. A trip lever passes through the arc-shaped through hole. The trip lever is connected to the rotating post. A big ball is placed in the third oil passage. A small ball is placed in the second oil passage. A compression spring is connected to the bolt and the big ball. A coiled spring is connected to the big ball and the small ball. A swivel rod is connected to the rotating post. A V-ring oil seal encloses the piston. An oil relief device is disposed on the valve body and inserted in the first channel.