Electro-optical device, driving method thereof, and electronic apparatus

An electro-optical device comprising:

• a display panel having a switching transistor and a pixel electrode that are disposed in correspondence with an intersection of a scanning line and a data line, an opposing electrode that faces the pixel electrode, and an electro-optical layer that is disposed between the pixel electrode and the opposing electrode;
• a detection unit that detects a current flowing through the electro-optical layer;
• and
• a control unit that controls the display driving of the display panel,
• wherein, when a voltage of an electric potential higher than an opposing electrode electric potential applied to the opposing electrode is defined to have a positive polarity and a voltage of an electric potential lower than the opposing electrode electric potential is defined to have a negative polarity,
• a data signal of the positive polarity and a data signal of the negative polarity are alternately supplied to the pixel electrode through the data line, and
• the control unit measures, based on a detection data supplied by the detection unit, a first accumulation current accumulated during a period in which a voltage of the positive polarity is applied and a second accumulation current accumulated during a period in which a voltage of the negative polarity is applied, and adjusts the opposing electrode electric potential such that a sum current acquired from adding the absolute value of the first accumulation current and the absolute value of the second accumulation current is smaller than a predetermined current value.

An electro-optical device comprising:

• a display panel having a switching transistor and a pixel electrode that are disposed in correspondence with an intersection of a scanning line and a data line, an opposing electrode that faces the pixel electrode, and an electro-optical layer that is disposed between the pixel electrode and the opposing electrode;
• a detection unit that detects a current flowing through the electro-optical layer;
• and
• a control unit that controls the display driving of the display panel,
• wherein, when a voltage of an electric potential higher than an opposing electrode electric potential applied to the opposing electrode is defined to have a positive polarity and a voltage of an electric potential lower than the opposing electrode electric potential is defined to have a negative polarity,
• a data signal of the positive polarity and a data signal of the negative polarity are alternately supplied to the pixel electrode through the data line, and
• the control unit measures, based on a detection data supplied by the detection unit, a first accumulation current accumulated during a period in which a voltage of the positive polarity is applied and a second accumulation current accumulated during a period in which a voltage of the negative polarity is applied, and adjusts a ratio of a period length of a period where the voltage of the positive polarity is applied to a period length of a period where the voltage of the negative polarity in one cycle of the data signal such that a difference between the absolute value of the first accumulation current and the absolute value of the second accumulation current is decreased.