Electro-optical device, electronic apparatus, and method of driving electro-optical device with variable subfield driving for temperature compensation

1. An electro-optical device comprising:

pixels that are disposed in correspondence with intersections of scanning lines and signal lines and are driven in response to an ON voltage or an OFF voltage supplied to the signal lines at a time when each of the scanning lines is selected;

a scanning line driving circuit that sequentially selects the scanning lines in each of a plurality of subfields within a field;

a signal line driving circuit that outputs the ON voltage to the signal lines at the time when each of the scanning lines is selected in at least one temperature compensation subfield among the plurality of subfields and outputs either the ON voltage or the OFF voltage to each of the signal lines in accordance with a designated gray scale of a pixel corresponding to the corresponding scanning line and the corresponding signal line at a time when each of the scanning lines selected in each of a plurality of gray scale control subfields, which is different from the temperature compensation subfield, out of the plurality of subfields;

a temperature detecting unit that detects a temperature; and

a control unit that sets a time length of the temperature compensation subfield to be changed in accordance with the temperature detected by the temperature detecting unit,

wherein the scanning line driving circuit includes:

a transmission circuit that generates a plurality of transmission signals in which transmission pulses acquired by sequentially shifting a start pulse are disposed; and

a pulse generating circuit that generates a first selection pulse corresponding to a leading edge of each of the transmission pulses and a second selection pulse corresponding to a trailing edge of each of the transmission pulses and outputs the selection pulses to each of the scanning lines,

wherein the first selection pulse directs to select each of the scanning lines in one of the temperature compensation subfield and the gray scale control subfield, and the second selection pulse directs to select each of the scanning lines in the other of the temperature compensation subfield and the gray scale control subfield, and

wherein the control unit controls a pulse width of the start pulse in accordance with the temperature detected by the temperature detecting unit.

2. The electro-optical device according to claim 1 , wherein the control unit sets the temperature compensation subfield to a longer time interval as the temperature detected by the temperature detecting unit is higher.

3. The electro-optical device according to claim 1 , wherein the field is divided into a plurality of unit periods, and each of the plurality of unit periods includes the temperature compensation subfield and the gray scale control subfield.

4. The electro-optical device according to claim 1 ,

wherein the signal line driving circuit includes:

a plurality of logic circuits corresponding to the signal lines; and

a signal output circuit that supplies direction data that designates the ON voltage or the OFF voltage in a time-division manner to each of the plurality of logic circuits, wherein each of the plurality of logic circuits receives a control signal that is set to a first level at a time when each of the scanning lines is selected in the temperature compensation subfield and is set to a second level at a time when each of the scanning lines is selected in each of the plurality of gray scale control subfields and outputs the ON voltage to the signal lines within a period in which the control signal is at the first level regardless of the direction data and outputs the ON voltage or the OFF voltage in accordance with the direction data to the signal lines in a period in which the control signal is at the second level.

5. The electro-optical device according to claim 4 , wherein each of the plurality of logic circuits includes a negative AND circuit to which the control signal and the direction data are input.

6. An electro-optical device comprising:

a pixel that disposed in correspondence with an intersection of a scanning line and a signal line and which is driven in accordance with an ON voltage or an OFF voltage;

a scanning line driving circuit that sequentially selects the scanning line in each of a plurality of subfields within a field;

a driving circuit that applies the ON voltage to the signal line at the time when the scanning line is selected in at least one temperature compensation subfield among a plurality of subfields within a field and applies either the ON voltage or the OFF voltage in accordance with a designated gray scale of the pixel to the pixel in each of a plurality of gray scale control subfields, which is different from the temperature compensation subfield, out of the plurality of subfields;

a temperature detecting unit that detects a temperature; and

a control unit that sets a time length of the temperature compensation subfield to be changed in accordance with the temperature detected by the temperature detecting unit,

wherein the scanning line driving circuit includes:

a transmission circuit that generates a plurality of transmission signals in which transmission pulses acquired by sequentially shifting a start pulse are disposed; and

a pulse generating circuit that generates a first selection pulse corresponding to a leading edge of each of the transmission pulses and a second selection pulse corresponding to a trailing edge of each of the transmission pulses and outputs the selection pulses to each of the scanning lines,

wherein the first selection pulse directs to select the scanning line in one of the temperature compensation subfield and the gray scale control subfield, and the second selection pulse directs to select each of the scanning line in the other of the temperature compensation subfield and the gray scale control subfield, and

wherein the control unit controls a pulse width of the start pulse in accordance with the temperature detected by the temperature detecting unit.