Display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorHiroyuki MIYAKE
Life of this patent
Estimating the term…
Abstract
A scan line to which a selection signal or a non-selection signal is input from its end, and a transistor in which a clock signal is input to a gate, the non-selection signal is input to a source, and a drain is connected to the scan line are provided. A signal input to the end of the scan line is switched from the selection signal to the non-selection signal at the same or substantially the same time as the transistor is turned on. The non-selection signal is input not only from one end but also from both ends of the scan line. This makes it possible to inhibit the potentials of portions in the scan line from being changed at different times.
Claims9
A driving method of a display device including a shift register, a transistor, a scan line, and a pixel,
- wherein the shift register is electrically connected to one end of the scan line,
- wherein one of a source and a drain of the transistor is electrically connected to the other end of the scan line, and
- wherein the pixel is electrically connected to the scan line,
- the driving method comprising the steps of:
- outputting a signal from the shift register to the one end of the scan line;
- and
- changing the transistor from an off-state to an on-state by inputting a clock signal to a gate of the transistor at the time of changing the signal from a first potential to a second potential,
- wherein the signal has a smaller pulse width than the clock signal.
A driving method of a display device including a first shift register, a second shift register, a first transistor, a second transistor, a first scan line, a second scan line, a first pixel and a second pixel,
- wherein the first pixel and the second pixel are between the first shift register and the second shift register,
- wherein the first shift register is electrically connected to one end of the first scan line,
- wherein one of a source and a drain of the first transistor is electrically connected to the other end of the first scan line,
- wherein the first pixel is electrically connected to the first scan line,
- wherein one of a source and a drain of the second transistor is electrically connected to one end of the second scan line,
- wherein the second shift register is electrically connected to the other end of the second scan line, and
- wherein the second pixel is electrically connected to the second scan line,
- the driving method comprising the steps of:
- outputting a first signal from the first shift register to the one end of the first scan line;
- outputting a second signal from the second shift register to the other end of the second scan line;
- changing the first transistor from an off-state to an on-state by inputting a first clock signal to a gate of the first transistor at the time of changing the first signal from a first potential to a second potential;
- and
- changing the second transistor from an off-state to an on-state by inputting a second clock signal to a gate of the second transistor at the time of changing the second signal from the first potential to the second potential,
- wherein the first signal has a smaller pulse width than the first clock signal, and
- wherein the second signal has a smaller pulse width than the second clock signal.
Dependencies are inferred from the claim text.