Display apparatus, driving method for display apparatus and electronic apparatus

1. A display apparatus, comprising:

a pixel array section; and

a driving section;

the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other;

each of the pixels including a sampling transistor, a driving transistor, a storage capacitor and a light emitting element;

the sampling transistor being connected at a control terminal thereof to an associated one of the scanning lines and at a pair of current terminals thereof to a first one of the signal lines and a control terminal of the driving transistor;

the driving transistor being connected at a first one of a pair of current terminals thereof to the light emitting element and at a second one of the current terminals thereof to a power supply;

the storage capacitor being connected to the control terminal of the driving transistor;

the driving section including a write scanner and a signal selector;

the write scanner supplying sequential control signals to the scanning lines for each horizontal period;

the signal selector supplying image signals, wherein a signal potential and a reference potential change over for each horizontal period, to the signal lines;

the sampling transistor being placed into an on state in response to a control signal supplied to an associated one of the scanning lines when an associated one of the signal lines has the reference potential to carry out a threshold voltage correction operation of canceling a dispersion of the threshold voltage of the driving transistor;

the sampling transistor carrying out a signal writing operation of writing, within a writing period from a first timing at which the potential of the associated signal line changes over from the reference potential to the signal potential to a second timing at which the sampling transistor is placed into an off state in response to the control signal, the signal potential into the storage capacitor;

the driving transistor supplying driving current in accordance with the signal potential written in the storage capacitor to the light emitting element so as to carry out a light emitting operation;

the signal selector variably adjusting the first timing in response to the signal potential thereby to variably control the writing period from the first timing to the second timing in response to the signal potential.

2. The display apparatus according to claim 1 , wherein, when the signal potential has a white level, the signal selector displaces the first timing toward the second timing to shorten the writing period, but when the signal potential has a black level, the signal selector displaces the first timing away from the second timing to elongate the writing period.

3. The display apparatus according to claim 2 , wherein the storage capacitor is connected between the control terminal and one of the current terminals of the driving transistor, and the driving transistor negatively feeds back driving current flowing therethrough during the writing period to the storage capacitor to carry out a correction operation against a dispersion of the mobility of the driving transistor whereas the signal selector variably adjusts the writing period in response to the signal potential to optimize the negative feedback amount.

4. A driving method for a display apparatus which includes a pixel array section and a driving section, the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other, each of the pixels including a sampling transistor, a driving transistor, a storage capacitor and a light emitting element, the sampling transistor being connected at a control terminal thereof to an associated one of the scanning lines and at a pair of current terminals thereof to a first one of the signal lines and a control terminal of the driving transistor, the driving transistor being connected at a first one of a pair of current terminals thereof to the light emitting element and at a second one of the current terminals thereof to a power supply, the storage capacitor being connected to the control terminal of the driving transistor, the driving section including a write scanner and a signal selector, the write scanner supplying sequential control signals to the scanning lines for each horizontal period, the signal selector supplying image signals, wherein a signal potential and a reference potential change over for each horizontal period, to the signal lines, the driving method comprising the steps of:

placing the sampling transistor into an on state in response to a control signal supplied to an associated one of the scanning lines when an associated one of the signal lines has the reference potential to carry out a threshold voltage correction operation of canceling a dispersion of the threshold voltage of the driving transistor;

carrying out a signal writing operation of writing, within a writing period from a first timing at which the potential of the associated signal line changes over from the reference potential to the signal potential to a second timing at which the sampling transistor is placed into an off state in response to the control signal, the signal potential into the storage capacitor;

supplying driving current in accordance with the signal potential written in the storage capacitor from the driving transistor supplying to the light emitting element so as to carry out a light emitting operation; and

variably adjusting the first timing in response to the signal potential thereby to variably control the writing period from the first timing to the second timing in response to the signal potential.

5. An electronic apparatus, comprising:

a display apparatus including; a pixel array section and a driving section;

the pixel array section including a plurality of scanning lines extending along the direction of a row, a plurality of signal lines extending along the direction of a column, and a plurality of pixels disposed in rows and columns at places at which the scanning lines and the signal lines intersect with each other;

each of the pixels including a sampling transistor, a driving transistor, a storage capacitor and a light emitting element;

the sampling transistor being connected at a control terminal thereof to an associated one of the scanning lines and at a pair of current terminals thereof to a first one of the signal lines and a control terminal of the driving transistor;

the driving transistor being connected at a first one of a pair of current terminals thereof to the light emitting element and at a second one of the current terminals thereof to a power supply;

the storage capacitor being connected to the control terminal of the driving transistor;

the driving section including a write scanner and a signal selector;

the write scanner supplying sequential control signals to the scanning lines for each horizontal period;

the signal selector supplying image signals, wherein a signal potential and a reference potential change over for each horizontal period, to the signal lines;

the sampling transistor being placed into an on state in response to a control signal supplied to an associated one of the scanning lines when an associated one of the signal lines has the reference potential to carry out a threshold voltage correction operation of canceling a dispersion of the threshold voltage of the driving transistor;

the sampling transistor carrying out a signal writing operation of writing, within a writing period from a first timing at which the potential of the associated signal line changes over from the reference potential to the signal potential to a second timing at which the sampling transistor is placed into an off state in response to the control signal, the signal potential into the storage capacitor;

the driving transistor supplying driving current in accordance with the signal potential written in the storage capacitor to the light emitting element so as to carry out a light emitting operation;

the signal selector variably adjusting the first timing in response to the signal potential thereby to variably control the writing period from the first timing to the second timing in response to the signal potential.

6. A display apparatus, comprising:

a pixel array section including

a plurality of scanning lines;

a plurality of signal lines; and

a plurality of pixels; and

a driving section including

a write scanner and a signal selector,

each of said plurality of pixels comprising:

a sampling transistor;

a driving transistor;

a storage capacitor; and

a light emitting element,

the write scanner supplying a control signal sequentially to the plurality of scanning lines,

the signal selector supplying a signal potential and a reference potential to the plurality of signal lines,

the sampling transistor writing the signal potential into the storage capacitor, within a writing period from a first timing at which the potential of one of the plurality of signal lines changes from the reference potential to the signal potential to a second timing where the sampling transistor is switched to an OFF state in response to the control signal,

the driving transistor supplying driving current in accordance with the signal potential written in the storage capacitor to the light emitting element, and

the signal selector variably adjusting the first timing in response to the signal potential.

7. A driving method for a display apparatus which includes a pixel array section including a plurality of scanning lines, a plurality of signal lines, and a plurality of pixels, and a driving section including a write scanner and a signal selector, each of said plurality of pixels comprising a sampling transistor, a driving transistor, a storage capacitor, and a light emitting element, the driving method comprising the steps of:

supplying, by the write scanner, a control signal sequentially to the plurality of scanning lines;

providing, by the signal selector, a signal potential and a reference potential to the plurality of signal lines;

writing the signal potential into the storage capacitor, within a writing period from a first timing at which the potential of one of the plurality of signal lines changes from the reference potential to the signal potential to a second timing where the sampling transistor is switched to an OFF state in response to the control signal,

supplying, by the driving transistor, driving current in accordance with the signal potential written in the storage capacitor to the light emitting element; and

variably adjusting the first timing in response to the signal potential in the signal selector.

8. An electronic apparatus comprising the display apparatus according to claim 6 .