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US 2022/0189407 A1Published application
Scan driver and display apparatus including the same
AssigneeSamsung Display Co., Ltd.
InventorsYanghwa Choi, Junghwan Hwang
Life of this patent
Estimating the term…
Abstract
An embodiment of a display apparatus includes a scan driver, a pixel, a first scan line electrically connecting the scan driver to the pixel, a second scan line electrically connecting the scan driver to the pixel, and a third scan line electrically connecting the scan driver to the pixel, wherein in operation: the pixel receives first, second, and third scan signals from the scan driver by way of the first, second, and third scan lines, respectively; the first and second scan signals produce a display period of a frame period in the pixel; and the third scan signal produces a black insertion period of the frame period in the pixel.
Claims20
A display apparatus comprising:
- a scan driver;
- a pixel;
- a first scan line electrically connecting the scan driver to the pixel;
- a second scan line electrically connecting the scan driver to the pixel;
- and
- a third scan line electrically connecting the scan driver to the pixel,
- wherein in operation:
- the pixel receives first, second, and third scan signals from the scan driver by way of the first, second, and third scan lines, respectively;
- the first and second scan signals produce a display period of a frame period in the pixel;
- and
- the third scan signal produces a black insertion period of the frame period in the pixel.
8 more elements
The display apparatus of claim 5, wherein the first node controller comprises:
- a pair of first transistors connected between the input terminal of the second voltage and the first control node and comprising a gate electrode connected to an input terminal of a fifth control signal;
- a pair of second transistors connected between the input terminal of the second voltage and the first control node and comprising a gate electrode connected to an input terminal of a next first carry signal;
- a pair of fourth transistors connected between an input terminal of the previous first carry signal and the first control node and comprising a gate electrode connected to the input terminal of the previous first carry signal;
- and
- a pair of twenty-eighth transistors connected between the input terminal of the first voltage and an intermediate node between the fourth transistors and comprising a gate electrode connected to the first control node.
2 more elements
The display apparatus of claim 10, wherein the first inverter comprises:
- a pair of third transistors connected between the first control node and the input terminal of the second voltage and comprising a gate electrode connected to a second control node of a next first stage;
- a pair of fifth transistors connected between the first control node and the input terminal of the second voltage and comprising a gate electrode connected to the second control node;
- a sixteenth transistor connected between an input terminal of a third control signal and an input terminal of a third voltage lower than the second voltage and comprising a gate electrode connected to the first control node;
- a seventeenth transistor connected between the input terminal of the third control signal and the input terminal of the third voltage and comprising a gate electrode connected to the first control node of the next first stage;
- an eighteenth transistor connected between the input terminal of the third control signal and the second control node;
- a fifteenth transistor connected between the input terminal of the third control signal and a gate electrode of the eighteenth transistor and comprising a gate electrode connected to the input terminal of the third control signal;
- a nineteenth transistor connected between the input terminal of the second voltage and the second control node and comprising a gate electrode connected to the first control node;
- and
- a twentieth transistor connected between the input terminal of the second voltage and the second control node and comprising a gate electrode connected to an input terminal of the previous first carry signal.
6 more elements
A scan driver comprising:
- a plurality of first stages, each of the first stages starts driving in response to a first start signal and outputs a first scan signal and a second scan signal according to voltage levels of a first control node and a second control node;
- a plurality of selection driving circuits, each of the selection driving circuits electrically connected to a pair of the first stages circuits and transmits a first voltage and a second voltage lower than the first voltage to the first control node and the second control node, respectively;
- and
- a plurality of second stages, each of the second stages starts driving in response to a second start signal and output a third scan signal according to the voltage levels of a third control node and a fourth control node,
- wherein the first stages sequentially output each of the first scan signal and the second scan signal in a frame period,
- the second stages sequentially output the third scan signal in the frame period,
- each of the first scan and second scan signals is sequentially output for a duration of two horizontal periods, and
- the third scan signal is sequentially output for the duration of a multiple of the horizontal periods of at least two of the horizontal periods.
5 more elements
Dependencies are inferred from the claim text.