Abstract: An image sensor includes a semiconductor substrate, a plurality of photoelectric transducer devices, a dielectric isolating structure and a plurality of spacers. The semiconductor substrate has a backside surface and a front side surface opposite to the backside surface. The photoelectric transducer devices are disposed on the front side surface. The dielectric isolating structure extends downwards into the semiconductor substrate from the front side surface and penetrates through the backside surface, so as to from a grid structure and isolate the photoelectric transducer devices from each other. The spacers are disposed on a plurality of sidewalls of the grid structure.

Abstract: An image sensor includes a semiconductor substrate, a plurality of photoelectric transducer devices, a dielectric isolating structure and a plurality of spacers. The semiconductor substrate has a backside surface and a front side surface opposite to the backside surface. The photoelectric transducer devices are disposed on the front side surface. The dielectric isolating structure extends downwards into the semiconductor substrate from the front side surface and penetrates through the backside surface, so as to from a grid structure and isolate the photoelectric transducer devices from each other. The spacers are disposed on a plurality of sidewalls of the grid structure.

Abstract: An image sensor includes a semiconductor substrate, a plurality of photoelectric transducer devices and a dielectric isolating structure. The semiconductor substrate has a backside surface and a front side surface opposite to the backside surface. The photoelectric transducer devices are disposed on the front side surface. The dielectric isolating structure extends downwards into the semiconductor substrate from the front side surface and penetrates through the backside surface, so as to from a grid structure and isolate the photoelectric transducer devices from each other.

Abstract: An ac power supply unit includes first, second and third output terminals. A load is connectable selectively between any two of the output terminals. A dc voltage supply unit supplies a high dc voltage output and has a positive terminal, a center tap terminal connected to the second output terminal, and a ground terminal. A first voltage-controlled switch interconnects the positive terminal of the dc voltage supply unit and the first output terminal. A second voltage-controlled switch interconnects the third output terminal and the ground terminal of the dc voltage supply unit. A third voltage-controlled switch interconnects the positive terminal of the dc voltage supply unit and the third output terminal. A fourth voltage-controlled switch interconnects the first output terminal and the ground terminal of the dc voltage supply unit. A control circuit assembly is connected to the voltage-controlled switches.