Abstract: A structure of a photosensor for receiving optical signals and converting the optical signals into electrical signals to be transmitted to a circuit board, the structure of the photosensor includes a substrate, a photosensitive chip, and a transparent layer. The substrate has a first surface formed with signal input terminals, and a second surface opposite to the first surface and formed with signal output terminals for electrically connecting the substrate to the circuit board. The photosensitive chip is mounted on the first surface of the substrate and electrically connecting to the substrate. The transparent layer is adhered onto the first surface of the substrate. A cavity is formed at a central portion of the transparent layer. The photosensitive chip on the substrate is located within the cavity of the transparent layer, and the photosensitive chip is capable of receiving the optical signals via the transparent layer.

Abstract: A stackable integrated circuit for electrically connecting to a circuit board and for a second integrated circuit body to be stacked on. The stackable integrated circuit includes an integrated circuit body, a plurality of first contacts, a projecting layer, and a plurality of second contacts. The integrated circuit body has a first surface and a second surface opposite to the first surface. The first contacts are formed on the first surface of the integrated circuit body for electrically connecting the integrated circuit body to the circuit board. The projecting layer is arranged on the second surface of the integrated circuit body. The second contacts are formed on the projecting layer for electrically connecting the integrated circuit body to a second integrated circuit body.

Abstract: A fluid delivering system receives a fluid from a supplying device, transfers the fluid to an operational device and then dumps the used fluid into an extraction device. The fluid delivering system has a main pipeline system and at least a secondary pipeline system. Each pipeline system uses a first flow valve to control the back flow of fluid to a first flow controller, a second flow valve to protect a pressure gauge and a third flow valve to control the flow of fluid to a pressure controller. Through the relative positioning and the concerted actions of these three valves, any malfunctioning in the fluid delivering system can be detected quickly so that on-going processing operation can stop immediately to minimize product damages.