Display device
AssigneeHitachi Displays, Ltd.
InventorsKikuo Ono, Yoshihiro Imajo
Life of this patent
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Abstract
In a display device in which each pixel includes a thin film transistor which is turned on in response to a scanning signal from a gate signal line, and an electrode to which a video signal from a drain signal line is supplied through the thin film transistor, the scanning signal allows a voltage level thereof which turns on the thin film transistor to have a valley portion which decreases the voltage level in a midst portion thereof, and the decreased voltage level of the valley portion is set to a value which is equal to or more than a voltage level which turns off the thin film transistor.
Claims21
A display device in which each pixel includes a thin film transistor which is turned on in response to a scanning signal from a gate signal line, and an electrode to which a video signal from a drain signal line is supplied through the thin film transistor, wherein
- the scanning signal allows a voltage level thereof which turns on the thin film transistor to have a valley portion which decreases the voltage level in a midst portion thereof, and the decreased voltage level of the valley portion is set to a value which is equal to or more than a voltage level which turns off the thin film transistor.
A display device in which each pixel includes a thin film transistor which is turned on in response to a scanning signal from a gate signal line, and an electrode to which a video signal from a drain signal line is supplied through the thin film transistor, wherein
- the scanning signal allows a voltage level thereof which turns on the thin film transistor to have a valley portion which decreases the voltage level in a midst portion thereof and, at the same time, a decreasing portion which gradually decreases the voltage level immediately before turning off the thin film transistor, and
- the decreased voltage levels at the valley portion and the decreasing portion are set to values equal to or more than a voltage level which turns off the thin film transistor.
A display device in which each pixel includes a thin film transistor which is turned on in response to a scanning signal from a gate signal line, and an electrode to which a video signal from a drain signal line is supplied through the thin film transistor, wherein
- the scanning signal allows a voltage level thereof which turns on the thin film transistor to have a valley portion which decreases the voltage level in a midst portion thereof and, at the same time, a decreasing portion which gradually decreases the voltage level immediately before turning off the thin film transistor,
- the decreased voltage levels at the valley portion and the decreasing portion are set to values equal to or more than a voltage level which turns off the thin film transistor, and
- one scanning signal and another scanning signal which is supplied next to one scanning signal are supplied in a partially overlapped manner in a state that the decreasing portion of one scanning signal and the valley portion of another scanning signal are aligned with each other in terms of time.
Dependencies are inferred from the claim text.