Abstract: A method is provided that includes forming a first metal layer of a seal structure over a micro-electromechanical system (MEMS) structure and over a channel formed through the MEMS structure to an integrated circuit of a semiconductor structure. The first metal layer is formed at a first temperature. The method includes forming a second metal layer over the first metal layer. The second metal layer is formed at a second temperature less than the first temperature. The method includes performing a first cooling process to cool the semiconductor structure.

Abstract: A dual-shaft hinge with alternative rotation includes: a pivotal base, and having an axial swinging member and a radial moving member; a first core shaft, having a first shaft rod, a first guiding slot and a first latching slot, and the first core shaft is formed in an unlocked status when the first latching slot is engaged with the radial moving member; and a second core shaft, having a second shaft rod, a second guiding slot and at least one second latching slot; the second core shaft is formed in a locked status when the at least one second latching slot is engaged with the radial moving member, and the first core shaft is in the unlocked status, thereby enabling the first core shaft and the second core shaft to alternatively rotate.

Abstract: A dual-shaft hinge with alternative rotation includes: a pivotal base, and having an axial swinging member and a radial moving member; a first core shaft, having a first shaft rod, a first guiding slot and a first latching slot, and the first core shaft is formed in an unlocked status when the first latching slot is engaged with the radial moving member; and a second core shaft, having a second shaft rod, a second guiding slot and at least one second latching slot; the second core shaft is formed in a locked status when the at least one second latching slot is engaged with the radial moving member, and the first core shaft is in the unlocked status, thereby enabling the first core shaft and the second core shaft to alternatively rotate.