Electro-optical device, driving method thereof, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorTadashi Yamada
Life of this patent
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Abstract
An electrooptical apparatus includes a plurality of scanning lines, a plurality of signal lines, and electrooptical devices, each being placed at an intersection of each of the scanning lines and each of the signal lines. The electrooptical apparatus is driven according to the amount of drive current supplied to the electrooptical devices. The electrooptical apparatus includes a brightness detection unit to detect the brightness of the electrooptical devices, and a drive current amount adjusting unit to adjust the amount of drive current based on the detected brightness result obtained by the brightness detection unit in order to correct for the brightness of the electrooptical devices.
Claims13
An electro-optical apparatus, comprising:
- a plurality of scanning lines;
- a plurality of signal lines;
- an electro-optical device placed at an intersection of each of a plurality of the scanning lines and each of a plurality of the signal lines;
- a driver which includes a D/A converter to convert digital data into analog data and which supplies a drive current as the analog data to the electro-optical devices according to the digital data;
- a brightness detection unit to continuously detect a brightness of the electro-optical devices;
- a light shielding unit to continuously detect if the electro-optical device is shielded;
- and
- a reference voltage adjusting unit to adjust a reference voltage for the D/A converter based on the detected brightness result obtained by the brightness detection unit,
- wherein the driver adjusts the drive current according to the adjusted reference voltage and supplies the adjusted drive current to the electro-optical devices.
An electro-optical apparatus, comprising:
- a plurality of scanning lines;
- a plurality of signal lines;
- an electro-optical device placed at an intersection of each of a plurality of the scanning lines and each of a plurality of the signal lines;
- a driver to supply a drive current to the electro-optical devices;
- a control circuit to supply to the driver a digital data corresponding to luminance data;
- a brightness detection unit to continuously detect a brightness of the electro-optical devices;
- a light shielding unit to continuously detect if the electro-optical device is shielded;
- and
- a data correction circuit to correct the digital data based on the detected brightness result obtained by the brightness detection unit,
- wherein the driver adjusts the drive current according to the corrected digital data and supplies the adjusted drive current to the electro-optical devices.
A driving method of an electro-optical device having a plurality of scanning lines, a plurality of signal lines, an electro-optical element placed at an intersection of each of a plurality of the scanning lines and each of a plurality of the signal lines, and a driver which includes a D/A converter to convert digital data into analog data and which supplies a drive current as the analog data to the electro-optical elements according to the digital data, the driving method comprising:
- detecting a brightness of the electro-optical devices continuously;
- continuously, detecting, if the electro-optical device is shielded;
- and
- defining a reference voltage for the D/A converter based on the detection result obtained,
- wherein the driver adjusts the drive current according to the adjusted reference voltage and supplies the adjusted drive current to the electro-optical devices.
A driving method of an electro-optical apparatus having a drive current, a reference voltage, a plurality of scanning lines, a plurality of signal lines, and an electro-optical device placed at an intersection of each of a plurality of the scanning lines and each of a plurality of the signal lines, brightness data being supplied to the electro-optical devices via a driver, the driving method comprising:
- detecting a brightness of the electro-optical devices continuously;
- continuously, detecting, if the electro-optical device is shielded, and
- correcting the digital data based on the detection result obtained,
- wherein the driver adjusts the drive current according to the adjusted reference voltage and supplies the adjusted drive current to the electro-optical devices.
Dependencies are inferred from the claim text.