Panel, control method thereof, display device and electronic apparatus

A control method of the panel in which pixels each having a light emitting element emitting light corresponding to electric current, a sampling transistor sampling a video signal, a drive transistor supplying the electric current to the light emitting element and a storage capacitor storing a given potential are arranged in a matrix state, and in which power supply lines propagating signals of power supply to the pixels existing in the same row and scanning lines propagating signals of the scanning lines are arranged with respect to respective rows, which includes

• a power supply line potential control means for switching the potential of the plural power supply lines belonging to the same unit at the same time according to each unit in which the plural power supply lines are grouped and
• a scanning line potential control means for starting writing of a signal potential of the video signal to the storage capacitor by switching the potential of the scanning line from a low potential to a high potential, and for completing the writing as well as starting light emission of the pixels by switching the potential of the scanning line from the high potential to the low potential according to each row, the control method of the panel comprising the steps of:
• performing an operation of switching the potential of the video signal line to a low potential before the writing is performed, a high potential at the time of writing and an intermediate potential after the writing has been performed repeatedly in this order, and
• performing the switching operation of the potential of the power supply lines of all units from the high potential to the low potential by the power supply line potential control means in a period after the potential of the video signal line has been switched from the high potential to the immediate potential before the potential of the video signal line is switched from the intermediate potential to the low potential.

A display device, comprising:

• a panel displaying images by allowing respective pixels to emit light with gradation corresponding to video signals,
• wherein, in the panel, pixels each having a light emitting element emitting light corresponding to electric current, a sampling transistor sampling the video signal, a drive transistor supplying the electric current to the light emitting element and a storage capacitor storing a given potential are arranged in a matrix state, and power supply lines propagating signals of power supply to the pixels existing in the same row and scanning lines propagating signals of the scanning lines are arranged with respect to respective rows, the panel includes
• a power supply line potential control means for switching the potential of the plural power supply lines belonging to the same unit at the same time according to each unit in which the plural power supply lines are grouped and
• a scanning line potential control means for starting writing of a signal potential of the video signal to the storage capacitor by switching the potential of the scanning line from a low potential to a high potential, and for completing the writing as well as starting light emission of the pixels by switching the potential of the scanning line from the high potential to the low potential according to each row,
• the potential of the video signal line is switched to a low potential before the writing is performed, a high potential at the time of writing and an intermediate potential after the writing has been performed repeatedly in this order, and
• the switching operation of the potential of the power supply lines of all units from the high potential to the low potential by the power supply line potential control means is performed in a period after the potential of the video signal line has been switched from the high potential to the immediate potential before the potential of the video signal line is switched from the intermediate potential to the low potential.

An electronic apparatus, comprising:

• a display unit having a panel displaying images by allowing respective pixels to emit light with gradation corresponding to video signals,
• wherein, in the panel, pixels each having a light emitting element emitting light corresponding to electric current, a sampling transistor sampling a video signal, a drive transistor supplying the electric current to the light emitting element and a storage capacitor storing a given potential are arranged in a matrix state, and power supply lines propagating signals of power supply to the pixels existing in the same row and scanning lines propagating signals of the scanning lines are arranged with respect to respective rows, the panel includes
• a power supply line potential control means for switching the potential of the plural power supply lines belonging to the same unit at the same time according to each unit in which the plural power supply lines are grouped and
• a scanning line potential control means for starting writing of a signal potential of the video signal to the storage capacitor by switching the potential of the scanning line from a low potential to a high potential, and for completing the writing as well as starting light emission of the pixels by switching the potential of the scanning line from the high potential to the low potential according to each row,
• the potential of the video signal line is switched to a low potential before the writing is performed, a high potential at the time of writing and an intermediate potential after the writing has been performed repeatedly in this order, and
• the switching operation of the potential of the power supply lines of all units from the high potential to the low potential by the power supply line potential control means is performed in a period after the potential of the video signal line has been switched from the high potential to the immediate potential before the potential of the video signal line is switched from the intermediate potential to the low potential.

A panel in which pixels each having a light emitting element emitting light corresponding to electric current, a sampling transistor sampling a video signal, a drive transistor supplying the electric current to the light emitting element and a storage capacitor storing a given potential are arranged in a matrix state, and in which power supply lines propagating signals of power supply to the pixels existing in the same row and scanning lines propagating signals of the scanning lines are arranged with respect to respective rows, the panel comprising:

• a power supply line potential control section configured to switch the potential of the plural power supply lines belonging to the same unit at the same time according to each unit in which the plural power supply lines are grouped;
• and
• a scanning line potential control section configured to start writing of a signal potential of the video signal to the storage capacitor by switching the potential of the scanning line from a low potential to a high potential, and configured to complete the writing as well as starting light emission of the pixels by switching the potential of the scanning line from the high potential to the low potential according to each row,
• wherein the potential of the video signal line is switched to a low potential before the writing is performed, a high potential at the time of writing and an intermediate potential after the writing has been performed repeatedly in this order, and
• the switching operation of the potential of the power supply lines of all units from the high potential to the low potential by the power supply line potential control section is performed in a period after the potential of the video signal line has been switched from the high potential to the immediate potential before the potential of the video signal line is switched from the intermediate potential to the low potential.

A display device, comprising:

• a panel displaying images by allowing respective pixels to emit light with gradation corresponding to video signals,
• wherein, in the panel, pixels each having a light emitting element emitting light corresponding to electric current, a sampling transistor sampling the video signal, a drive transistor supplying the electric current to the light emitting element and a storage capacitor storing a given potential are arranged in a matrix state, and power supply lines propagating signals of power supply to the pixels existing in the same row and scanning lines propagating signals of the scanning lines are arranged with respect to respective rows, the panel includes
• a power supply line potential control section configured to switch the potential of the plural power supply lines belonging to the same unit at the same time according to each unit in which the plural power supply lines are grouped and
• a scanning line potential control section configured to start writing of a signal potential of the video signal to the storage capacitor by switching the potential of the scanning line from a low potential to a high potential, and configured to complete the writing as well as starting light emission of the pixels by switching the potential of the scanning line from the high potential to the low potential according to each row,
• the potential of the video signal line is switched to a low potential before the writing is performed, a high potential at the time of writing and an intermediate potential after the writing has been performed repeatedly in this order, and
• the switching operation of the potential of the power supply lines of all units from the high potential to the low potential by the power supply line potential control section is performed in a period after the potential of the video signal line has been switched from the high potential to the immediate potential before the potential of the video signal line is switched from the intermediate potential to the low potential.

An electronic apparatus, comprising:

• a display unit having a panel displaying images by allowing respective pixels to emit light with gradation corresponding to video signals,
• wherein, in the panel, pixels each having a light emitting element emitting light corresponding to electric current, a sampling transistor sampling a video signal, a drive transistor supplying the electric current to the light emitting element and a storage capacitor storing a given potential are arranged in a matrix state, and power supply lines propagating signals of power supply to the pixels existing in the same row and scanning lines propagating signals of the scanning lines are arranged with respect to respective rows, the panel includes
• a power supply line potential control section configured to switch the potential of the plural power supply lines belonging to the same unit at the same time according to each unit in which the plural power supply lines are grouped and
• a scanning line potential control section configured to start writing of a signal potential of the video signal to the storage capacitor by switching the potential of the scanning line from a low potential to a high potential, and for completing the writing as well as starting light emission of the pixels by switching the potential of the scanning line from the high potential to the low potential according to each row,
• the potential of the video signal line is switched to a low potential before the writing is performed, a high potential at the time of writing and an intermediate potential after the writing has been performed repeatedly in this order, and
• the switching operation of the potential of the power supply lines of all units from the high potential to the low potential by the power supply line potential control section is performed in a period after the potential of the video signal line has been switched from the high potential to the immediate potential before the potential of the video signal line is switched from the intermediate potential to the low potential.