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US 12,749,425 B2Granted
Gate driver, display device including the gate driver, and electronic device including the display device
AssigneeSamsung Display Co., Ltd.
InventorJunhyun Park
Life of this patent
Estimating the term…
Abstract
A gate driver includes a first output stage through a N-th output stage and a sensing stage. Each of the first output stage through the N-th output stage is configured to output a gate signal in response to a control node. The sensing stage includes a hold transistor, which is turned on in response to the voltage of the control node, and is configured to sense a threshold voltage of the hold transistor of the sensing stage.
Claims16
A gate driver, comprising:
- a first output stage through a N-th output stage;
- and
- a sensing stage,
- wherein:
- each of the first output stage through the N-th output stage is configured to output a gate signal in response to a voltage of a control node, and
- the sensing stage:
- comprises a hold transistor configured to turn on in response to the voltage of the control node, and
- is configured to sense a threshold voltage of the hold transistor of the sensing stage,
- wherein a compensation voltage is applied to a back gate electrode of the hold transistor of the sensing stage based on the sensed threshold voltage of the hold transistor of the sensing stage, and
- wherein:
- each of the first output stage through the N-th output stage comprises a hold transistor configured to turn on in response to the voltage of the control node, and
- when the compensation voltage is applied to the back gate electrode of the hold transistor of the sensing stage, the compensation voltage is applied to a back gate electrode of each of the hold transistors of the first output stage through the N-th output stage.
9 more elements
A display device, comprising:
- a display panel comprising pixels;
- a gate driver configured to provide gate signals to the pixels;
- and
- a driving controller configured to control the gate driver, wherein the gate driver comprises:
- a first output stage through a N-th output stage;
- and
- a sensing stage, wherein:
- each of the first output stage through the N-th output stage is configured to output a gate signal in response to a voltage of a control node, and
- the sensing stage:
- comprises a hold transistor configured to turn on in response to the voltage of the control node, and
- is configured to sense a threshold voltage of the hold transistor of the sensing stage,
- wherein a compensation voltage is applied to a back gate electrode of the hold transistor of the sensing stage based on the sensed threshold voltage of the hold transistor of the sensing stage, and
- wherein:
- each of the first output stage through the N-th output stage comprises a hold transistor configured to turn on in response to the voltage of the control node, and
- when the compensation voltage is applied to the back gate electrode of the hold transistor of the sensing stage, the compensation voltage is applied to a back gate electrode of each of the hold transistors of the first output stage through the N-th output stage.
12 more elements
An electronic device, comprising:
- a display panel comprising pixels;
- a gate driver configured to provide gate signals to the pixels;
- a driving controller configured to control the gate driver;
- and
- a processor configured to control the driving controller,
- wherein the gate driver comprises:
- a first output stage through a N-th output stage;
- and
- a sensing stage,
- wherein:
- each of the first output stage through the N-th output stage is configured to output a gate signal in response to a voltage of a control node, and
- the sensing stage:
- comprises a hold transistor, which is turned on in response to the voltage of the control node, and
- is configured to sense a threshold voltage of the hold transistor of the sensing stage,
- wherein a compensation voltage is applied to a back gate electrode of the hold transistor of the sensing stage based on the sensed threshold voltage of the hold transistor of the sensing stage, and
- wherein:
- each of the first output stage through the N-th output stage comprises a hold transistor configured to turn on in response to the voltage of the control node, and
- when the compensation voltage is applied to the back gate electrode of the hold transistor of the sensing stage, the compensation voltage is applied to a back gate electrode of each of the hold transistors of the first output stage through the N-th output stage.
15 more elements
Dependencies are inferred from the claim text.