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 scanning lines;
a plurality of signal lines;
electro-optical devices placed at intersections of the plurality of scanning lines and the plurality of signal lines; and
a driver to supply a drive voltage or a drive current to the electro-optical devices via the plurality of signal lines according to data signals;
a data signal measuring unit to measure an amount of the data signals;
a data signal amount storage unit to accumulate and store the data signal measured by said data signal measuring unit; and
a data correction circuit to generate a reference signal to correct the drive voltage or the drive current outputting from the driver based on the amount of the accumulated data signals stored in said data signal amount storage unit.
2. The electro-optical apparatus according to claim 1 , the electro-optical devices including three types of electro-optical devices for R, G, and B (red, green, and blue),
the data signal amount measuring unit measuring the amount of data signals corresponding to a brightness for each of the three types of electro-optical devices,
the data signal amount storage unit accumulating and storing the amount of data signals corresponding to a brightness for each of the three types of electro-optical devices measured by said data signal amount measuring unit, and
the data connection circuit generating a reference signal to correct the drive voltage or the drive current based on the amount of the accumulated data signals stored for each of the three types of electro-optical devices in said data signal storage unit.
3. A driving method of an electro-optical apparatus having a plurality of scanning lines, a plurality of signal lines, and electro-optical devices each being placed at an intersection of each of the scanning lines and each of the signal lines, and a driver supplying a drive voltage or a drive current to the electro-optical devices via the plurality of signal lines according to image data, the driving method comprising:
measuring an amount of image data supplied to the electro-optical devices;
storing the measured amount of accumulated image data; and
generating a reference signal based on the measured amount of accumulated image data;
correcting the drive voltage or the drive current based on the reference signal; and
modifying the image data according to an accumulated lighting time or the accumulated image data.
4. The driving method according to claim 3 , further including:
measuring the amount of image data for each of three colors, R, G, and B (red, green, and blue), storing the amount of accumulated image data measured for each of R, G, and B, generating a reference signal based on the amount of accumulated image data measured for each of R, G, B, and correcting the drive voltage or the drive current for each of R, G, and B based on the reference signal.