Electro-optical apparatus, driving method thereof, and electronic device
An electro-optical apparatus is provided that has a plurality of scanning lines, a plurality of signal lines, and electro-optical devices that are each being placed at an intersection of each of the scanning lines and each of the signal lines. The electro-optical apparatus is driven according to the amount of drive current supplied to the electro-optical devices. The electro-optical apparatus includes a lighting time measuring unit to measure a lighting time of the electro-optical devices, a lighting time storage unit to store the lighting time obtained by the lighting time measuring unit, and a drive current amount adjusting unit to adjust the amount of drive current based on the lighting time stored in the lighting time storage unit so as to correct the brightness of the electro-optical devices.
1. An electro-optical apparatus, comprising:
a plurality of electro-optical devices having a brightness defined according to a drive voltage or a drive current supplied to the plurality of electro-optical devices;
a lighting time measuring unit to measure an accumulated lighting time of the electro-optical devices;
a lighting time storage unit to store the accumulated lighting time measured by said lighting time measuring unit;
an adjusting unit to generate a reference signal based on a target brightness value for the accumulated lighting time, a brightness correction value for the accumulated lighting time, and the accumulated lighting time stored in the lighting time storage unit; and
a driver to correct the drive voltage or the drive current according to the reference signal, and to output the correcting drive voltage or the correcting drive current to the plurality of electro-optical devices.
2. An electronic device, comprising:
the electro-optical apparatus according to claim 1 .
3. A driving method of an electro-optical apparatus having an electro-optical device, the driving method comprising:
measuring an accumulated lighting time of the electro-optical device;
storing the measured accumulated lighting time;
generating a reference signal based on a target brightness value for the accumulated lighting time, a brightness correction value for the accumulated lightning time, and the measured accumulated lighting time; and
correcting the drive voltage or the drive current supplied to the electro-optical device based on the reference signal.