Patent ID: 8009213
Filing Date: 2011-08-30
Classification: H04N

Abstract:
1. An image sensing apparatus comprising: a pixel; and a driving unit which drives the pixel, wherein the pixel includes a photoelectric conversion unit, a charge-voltage converter which converts a signal based on an electric charge accumulated by the photoelectric conversion unit into a voltage, and a transfer MOS transistor which transfers the electric charge accumulated by the photoelectric conversion unit to the charge-voltage converter, wherein the driving unit includes a buffer circuit configured to supply a transfer signal to a transfer control line connected to a gate of the transfer MOS transistor, wherein the buffer circuit includes a first PMOS transistor having a drain connected to the transfer control line, and a source supplied with a power supply voltage V a first NMOS transistor having a drain connected to the transfer control line and the drain of the first PMOS transistor, and a source supplied with a reference voltage V a second PMOS transistor having a drain connected to the source of the first PMOS transistor, and a source supplied with the power supply voltage V a second NMOS transistor having a drain connected to the source of the first NMOS transistor, and a source supplied with the reference voltage V wherein V wherein V wherein Vthp wherein Vthn wherein V wherein V wherein Vthp wherein Vthn wherein