Pixel circuit, display device, and driving method

A display device, comprising:

• a pixel circuit including:
• a light emitting element;
• a first transistor configured to supply, in a light emission period of a first frame of a video signal, a current to the light emitting element based on a first voltage at a specific terminal of the first transistor;
• a first capacitor configured to hold the first voltage;
• a second transistor configured to sample, in the light emission period, a signal voltage of a video signal line,
• wherein the signal voltage corresponds to a second frame of the video signal;
• a second capacitor configured to hold the sampled signal voltage in the light emission period;
• and
• a third transistor configured to:
• connect the second capacitor to the first capacitor in the second frame and the light emission period;
• and
• set, to the first capacitor, a second voltage corresponding to the signal voltage by transfer of electric charges accumulated in the second capacitor to the first capacitor,
• wherein the electric charges are accumulated in the second capacitor in the light emission period;
• and
• a drive circuit configured to control an operation of the second transistor and an operation of the third transistor.

A driving method, comprising:

• supplying a first voltage held by a first capacitor to a specific first terminal of a first transistor;
• supplying, by the first transistor, in a light emission period of a first frame of a video signal, a current a light emitting element based on the first voltage supplied to the specific terminal;
• sampling, by a second transistor, a signal voltage of a video signal line in the light emission period,
• wherein the signal voltage corresponds to a second frame of the video signal;
• holding, by a second capacitor, the sampled signal voltage in the light emission period;
• connecting, by a third transistor, after the signal voltage is held by the second capacitor, the second capacitor to the first capacitor in the second frame and the light emission period;
• and
• setting, by the third transistor, a second voltage corresponding to the signal voltage by transferring electric charges accumulated in the second capacitor to the first capacitor,
• wherein the electric charges are accumulated in the second capacitor in the light emission period.

A pixel circuit, comprising:

• a first transistor configured to supply a current to a light emitting element based on a first voltage at a specific terminal of the first transistor;
• a first capacitor configured to hold the first voltage;
• a second transistor configured to sample a signal voltage of a video signal line;
• a second capacitor configured to hold the sampled signal voltage;
• a third transistor configured to set, to the first capacitor, a second voltage corresponding to the signal voltage by transfer of electric charges accumulated in the second capacitor to the first capacitor;
• and
• a fourth transistor configured to short-circuit a connection node to a reference voltage, wherein
• the connection node is between the light emitting element and the first transistor, and
• the third transistor is further configured to connect the second capacitor to the first capacitor in at least a part of a period in which at least the fourth transistor does not short-circuit the connection node to the reference voltage.