Abstract: An image sensor includes a substrate having first and second surfaces and first and second regions. Unit pixels including photoelectric conversion layers are arranged inside the first region. A pixel separation pattern extends from the first surface to the second surface in the first region, separates each of the unit pixels, and includes a pixel separation spacer film and a pixel separation filling film. A dummy pixel separation pattern extends from the first surface to the second surface in the second region, and includes a dummy pixel separation filling film. A wiring structure disposed on the second surface includes an inter-wiring insulating film and a first wiring. A first contact directly connects the dummy pixel separation filling film and connects the dummy pixel separation filling film to the first wiring. A height of the pixel separation filling film is greater than a height of the dummy pixel separation filling film.

Abstract: A system and method are provided for measuring a power cutoff level in a mobile terminal. The system includes a power cutoff level measurer, a power supply, and a mobile terminal. The power cutoff level measurer sends a predetermined power supply command to the power supply. The power supply supplies the mobile terminal with a predetermined amount of power in response to the power supply command. The mobile terminal supplies its modules with the power to operate the modules, and sends operation information of the modules to the power cutoff level measurer. The power cutoff level measurer receives an operation signal from the mobile terminal, and determines a point in time at which the operation of the mobile terminal is stopped. The power cutoff level measurer measures a power cutoff level at the point in time at which the operation of the mobile terminal is stopped.