Abstract: In an embodiment, a method includes: aligning a first package component with a second package component, the first package component having a first region and a second region, the first region including a first conductive connector, the second region including a second conductive connector; performing a first laser shot on a first portion of a top surface of the first package component, the first laser shot reflowing the first conductive connector of the first region, the first portion of the top surface of the first package component completely overlapping the first region; and after performing the first laser shot, performing a second laser shot on a second portion of the top surface of the first package component, the second laser shot reflowing the second conductive connector of the second region, the second portion of the top surface of the first package component completely overlapping the second region.

Abstract: A double-shaft hinge with a stable structure includes a first rotating shaft, a second rotating shaft, a carrier frame and a switching sheet. The first rotating shaft is provided with a first cam; the second rotating shaft is parallel to the first rotating shaft and is provided with a second cam; the carrier frame is formed with a limiting passage and two shaft installation holes for the first rotating shaft and the second rotating shaft to pass through respectively; the switching sheet is arranged on the carrier frame and limited by the limiting passage and only makes a linear movement along a surface of the carrier frame. The switching sheet has a first state of being pushed by the first cam to limit the rotation of the second rotating shaft, and a second state of being pushed by the second cam to limit the rotation of the first rotating shaft.

Abstract: A hinge includes a base frame, a mechanically transmitting assembly and two support frames. The base frame defines two guideways disposed opposite to each other in a front-and-rear direction. The mechanically transmitting assembly is mounted on the base frame and partly disposed in the guideways. Each support frame has an arcuate frame body slidably engaging the respective guideway and coupled with the mechanically transmitting assembly, and a support frame body disposed outwardly of the base frame. The support frames are rotatable about a rotating axis relative to the base frame to make synchronous rotation in opposite rotational directions through the mechanically transmitting assembly. The rotating axis is disposed above the base frame.

Abstract: A multi-link hinge assembly includes first and second link levers, first and second sliding rods, first and second bases, a central shaft, and first and second torque shafts. The first link lever is connected to the second base by the second torque shaft and is slidable along with the first sliding rod within the first base. The second link lever is connected to the first base by the first torque shaft and is slidable along with the second sliding rod within the second base. The central shaft extends through the first and second link levers. When the second base is rotated relative to the first torque shaft, the first and second sliding rods move toward the central shaft.