Patent ID: 8564508
Filing Date: 2013-10-22
Classification: G09G

Abstract:
1. A display device comprising pixel circuits arranged in a form of a matrix; a given one of said pixel circuits including at least: said sampling transistor being connected to a signal line, and being configured to sample a signal from said signal line; said drive transistor and said electro-optical element being arranged in a series connection to form a current path between a power supply line and a ground line; and said drive transistor being configured to control a driving current through said current path according to a signal potential; and wherein said compensation unit includes at least a first transistor and a second transistor and is configured to compensate for a dependence of said driving current on a characteristic of said drive transistor, wherein said first transistor is connected to said drive transistor and said compensation unit is configured to detect, in a detection period before a light emission period, a current of said current path through said first transistor, and wherein said second transistor is put in a cut-off state during said detection period and is put in a conductive state in said light emission period, such that said compensation unit sets a voltage between a gate node and a current node of said drive transistor during said light emission period to a value depending on both of a characteristic data of said drive transistor and said image signal.