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US 2009/0262102 A1Published application
Display device, driving method of display device, and electronic device
AssigneeSony Corporation
InventorsTakao Tanikame, Yukihito Iida, Tetsuo Minami, Katsuhide Uchino
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Abstract
Disclosed herein is a display device including a pixel array unit, a first scanning circuit, a second scanning circuit and a selecting circuit.
Claims5
A display device comprising:
- a pixel array unit formed by arranging pixels in a form of a matrix, said pixels including an electrooptic element, a writing transistor which writes a video signal, a retaining capacitance which retains said video signal written by said writing transistor, and a drive transistor which drives said electrooptic element on a basis of said video signal retained in said retaining capacitance;
- a first scanning circuit configured to selectively supply a first potential and a second potential lower than said first potential to a power supply line that is disposed in each pixel row of said pixel array unit and which supplies current to said drive transistor;
- a second scanning circuit configured to set said writing transistor in a conducting state in a period in which said second potential is selected, and setting said writing transistor in a non-conducting state after a change from said second potential to said first potential, while selecting the pixels of said pixel array unit in row units by driving said writing transistor in each pixel row of said pixel array unit;
- and
- a selecting circuit configured to selectively supply said video signal, a first offset voltage serving as a reference for said video signal, and a second offset voltage different from said first offset voltage to a signal line disposed in each column of said pixel array unit, and configured to select said second offset voltage at least when said writing transistor is in the conducting state in the period in which said second potential is selected, and configured to select said first offset voltage in place of said second offset voltage after the change from said second potential to said first potential and before said writing transistor is set in the non-conducting state.
2 more elements
A driving method of a display device, said display device including
- a pixel array unit formed by arranging pixels in a form of a matrix, said pixels including an electrooptic element, a writing transistor which writes a video signal, a retaining capacitance which retains said video signal written by said writing transistor, and a drive transistor which drives said electrooptic element on a basis of said video signal retained in said retaining capacitance,
- a first scanning circuit configured to selectively supply a first potential and a second potential lower than said first potential to a power supply line that is disposed in each pixel row of said pixel array unit and which supplies current to said drive transistor,
- a second scanning circuit configured to selectively supply the pixels of said pixel array unit in row units by driving said writing transistor in each pixel row of said pixel array unit, and
- a selecting circuit configured to selectively supply said video signal, a first offset voltage serving as a reference for said video signal, and a second offset voltage different from said first offset voltage to a signal line disposed in each column of said pixel array unit,
- said driving method comprising:
- selecting said second offset voltage and setting said writing transistor in a conducting state in a period in which said second potential is selected;
- next changing from said second potential to said first potential;
- next selecting said first offset voltage in place of said second offset voltage;
- and
- then setting said writing transistor in a non-conducting state.
7 more elements
An electronic device having a display device,
- wherein said display device includes
- a pixel array unit formed by arranging pixels in a form of a matrix, said pixels including an electrooptic element, a writing transistor which writes a video signal, a retaining capacitance which retains said video signal written by said writing transistor, and a drive transistor which drives said electrooptic element on a basis of said video signal retained in said retaining capacitance,
- a first scanning circuit configured to selectively supply a first potential and a second potential lower than said first potential to a power supply line that is disposed in each pixel row of said pixel array unit and which supplies current to said drive transistor,
- a second scanning circuit configured to set said writing transistor in a conducting state in a period in which said second potential is selected, and making said writing transistor make a transition to a non-conducting state after a change from said second potential to said first potential, while selecting the pixels of said pixel array unit in row units by driving said writing transistor in each pixel row of said pixel array unit, and
- a selecting circuit configured to selectively supply said video signal, a first offset voltage serving as a reference for said video signal, and a second offset voltage different from said first offset voltage to a signal line disposed in each column of said pixel array unit, and configured to select said second offset voltage at least when said writing transistor is in the conducting state in the period in which said second potential is selected, and configured to select said first offset voltage in place of said second offset voltage after the change from said second potential to said first potential and before said writing transistor makes the transition to the non-conducting state.
2 more elements
Dependencies are inferred from the claim text.