Abstract: A method for estimating a flight time of a hydrogen fuel cell UAV (unmanned aerial vehicle) includes multiple steps performed by a controller: obtaining an internal pressure of a hydrogen tank by a pressure sensor installed on the hydrogen tank, calculating a remaining hydrogen volume according to the internal pressure and a capacity of the hydrogen tank, obtaining a reaction current value of the fuel cell, calculating a first hydrogen consumption rate according to the reaction current value, the number of a set of membrane electrodes connected in series and a Faraday constant, obtaining a second hydrogen consumption rate of a purge operation of an anode of the full cell; obtaining a hydrogen leakage rate of a stack of the fuel cell, and calculating the flight time according to the remaining hydrogen volume, the first hydrogen consumption rate, the second hydrogen consumption rate and the hydrogen leakage rate.

Abstract: An integrated circuit package including electrically floating metal lines and a method of forming are provided. The integrated circuit package may include integrated circuit dies, an encapsulant around the integrated circuit dies, a redistribution structure on the encapsulant, a first electrically floating metal line disposed on the redistribution structure, a first electrical component connected to the redistribution structure, and an underfill between the first electrical component and the redistribution structure. A first opening in the underfill may expose a top surface of the first electrically floating metal line.

Abstract: A blood pressure detection device manufactured by a semiconductor process includes a substrate, a microelectromechanical element, a gas-pressure-sensing element, a driving-chip element, an encapsulation layer and a valve layer. The substrate includes inlet apertures. The microelectromechanical element and the gas-pressure-sensing element are stacked and integrally formed on the substrate. The encapsulation layer is encapsulated and positioned on the substrate. A flowing-channel space is formed above the microelectromechanical element and the gas-pressure-sensing element. The encapsulation layer includes an outlet aperture in communication with an airbag. The driving-chip element controls the microelectromechanical element, the gas-pressure-sensing element and valve units to transport gas.

Abstract: A semiconductor structure includes a functional die, a dummy die, a redistribution structure, a seal ring and an alignment mark. The dummy die is electrically isolated from the functional die. The redistribution structure is disposed over and electrically connected to the functional die. The seal ring is disposed over the dummy die. The alignment mark is between the seal ring and the redistribution structure, wherein the alignment mark is electrically isolated from the dummy die, the redistribution structure and the seal ring. The insulating layer encapsulates the functional die and the dummy die.

Abstract: An electrophoretic display and a related driving method are provided, the electrophoretic display and related driving method for causing voltage level switching of a common signal of the electrophoretic display, which induces colored electrophoretic particles to be arranged in a more compact way during a power-off period, thereby improving the quality of a standby image of the electrophoretic display.

Abstract: A lamp includes a bulb having conductive terminals and a retainer including a cylinder having a top opening for receiving the bulb and a U-shaped support having a bottom with two arms extended towards and connected to lower side of the cylinder for supporting and retaining the bulb in the retainer whereby opposite openings are formed between the support. Projections extend from opposite sides of the support and extend in opposite directions. A partition extends from the bottom of the support and having opposite side faces that are inclined and converge to each other. A socket includes a circumferential wall forming an upper space for receiving the retainer therein and a lower space having a lower opening for extension of the wires. A securing structure is formed on an inside surface of the circumferential wall and corresponds to each of the openings between the support and the cylinder of the retainer.

Abstract: A lamp includes a bulb having conductive terminals and a retainer including a cylinder having a top opening for receiving the bulb and a U-shaped support having two legs extending from a lower side of the cylinder and connected by a bottom for supporting and retaining the bulb in the retainer whereby opposite openings are formed between the support. Projections extend from opposite sides of the. A partition extends from the bottom of the support and having opposite side faces that are inclined and converge to each other. A socket includes a circumferential wall forming an upper space for receiving the retainer therein and a lower space having a lower opening for extension of the wires. A securing structure is formed on an inside surface of the circumferential wall and corresponds to each of the openings between the support and the cylinder of the retainer.

Abstract: An improved lamp structure for lamp strings comprising a lamp bulb, a base, a socket and two conductors is disclosed. The base is provided therein with a receiving recess and has a lower portion thereof partially opened, so that when the lamp bulb is placed in the base, the lower end the lamp bulb is partially exposed. The socket is provided therein with pairs of ribs; they can forcedly press the base and the lamp bulb to fix their positions, and form an engaging groove to receive the metallic pins of the conductors. By this arrangement, the metallic pins of the conductors can electrically contact respectively two metallic wires of the lamp bulb. Therefore, the longitudinal size of the elements of the whole structure can be shortened to reduce cost of material in production, and thereby safety of the products can be elevated.