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US 11,600,231 B2Granted
Scan driving circuit and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsTaehoon Kim, Joon-Chul Goh, Soon-Dong Kim, Hae-Kwan Seo
Life of this patent
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Abstract
A scan driving circuit includes: a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal; and a masking circuit configured to stop the driving circuit from outputting the scan signal in response to a masking signal and a signal indicating an operating state of the driving circuit.
Claims21
A scan driving circuit comprising:
- a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal;
- and
- a masking circuit configured to stop the driving circuit from outputting the scan signal in response to a masking signal and a signal indicating an operating state of the driving circuit such that a first display area at which a first image is displayed is driven at a lower frequency than a second display area at which a second image is displayed in response to the masking signal at the first display area,
- wherein the driving circuit comprises:
- a first transistor configured to transmit the carry signal to a first node in response to a first clock signal among the clock signals;
- and
- a second transistor connecting the output terminal to a first voltage terminal configured to receive a first voltage in response to a signal of the first node.
4 more elements
A display device comprising:
- a display panel including a plurality of pixels respectively connected to a plurality of data lines and a plurality of scan lines;
- a data driving circuit configured to drive the plurality of data lines;
- a scan driving circuit configured to drive the plurality of scan lines;
- and
- a driving controller configured to receive an image signal and a control signal and to control the data driving circuit and the scan driving circuit to display an image on the display panel,
- wherein the driving controller is configured to divide the display panel into a first display area and a second display area based on the image signal, and to output a masking signal indicating a start point of the second display area,
- wherein the scan driving circuit comprises a plurality of driving stages each configured to drive a corresponding scan line among the plurality of scan lines,
- wherein each of the plurality of driving stages comprises:
- a driving circuit configured to output a scan signal to an output terminal in response to clock signals and a carry signal from the driving controller;
- and
- a masking circuit configured to stop the driving circuit from outputting the scan signal in response to the masking signal and a signal indicating an operating state of a corresponding driving stage among the plurality of driving stages, such that a first display area at which a first image is displayed is driven at a lower frequency than a second display area at which a second image is displayed in response to the masking signal at the first display area,
- wherein each of the plurality of driving stages comprises:
- a first transistor configured to transmit the carry signal to a first node in response to a first clock signal among the clock signals;
- and
- a second transistor connecting the output terminal to a first voltage terminal receiving a first voltage in response to a signal from the first node.
12 more elements
Dependencies are inferred from the claim text.