Patent ID: 8421717

Claim:
An active matrix type display apparatus including a plurality of pixels disposed in a matrix arrangement, each of the pixels comprising: a light-emitting element having a first electrode and a second electrode, which emits light in response to a current supplied via the first and second electrodes; a first power line connected to the first electrode of the light-emitting element; a second power line; a signal line connected to a signal line drive circuit which supplies a luminance signal corresponding to a luminance of light emission of the light-emitting element, the luminance signal being a current signal; a first switching element, one of a drain electrode and a source electrode of which is connected to the signal line, and which has a gate electrode connected to a first scan line; a driver element, one of a drain electrode and a source electrode of which is connected to the other of the drain electrode and the source electrode of the first switching element, and the other of which is connected to the second electrode of the light-emitting element or to the second power line; a luminance signal retention capacitor having a first electrode and a second electrode, the second electrode being connected to the source electrode of the driver element; a second switching element, one of a drain electrode and a source electrode of which is connected to the first electrode of the luminance signal retention capacitor, and the other of which is connected to the signal line or to the drain electrode of the driver element; and a threshold voltage detection and addition unit having a first terminal connected to the gate electrode of the driver element, a second terminal electrically separately provided from the first terminal and connected to the first electrode of the luminance signal retention capacitor, and a third terminal connected to a second scan line, which detects a threshold voltage of the driver element and causes a voltage obtained by adding the threshold voltage to a potential of the second terminal to be applied at the first terminal.