DISPLAY APPARATUS
First Claim
1. A display apparatus comprising:
- a display panel comprising a plurality of pixels to display frames and sub frames, the frames comprising a previous frame, a present frame and a next frame, and the sub frames comprising a first sub frame and a second sub frame, wherein the pixels receive data voltages of the previous frame during the first sub-frame of the present frame to hold a previous image and to receive data voltages of the present frame during the second sub-frame of the present frame to display a present image;
a plurality of sensors configured to detect touch event on the display panel and to output sensing signals;
a scan driver comprising a plurality of stages to output a plurality of scan signals to switch the sensors, the scan driver configured to drive a first scan block among the output stages during the first sub-frame and to drive a second scan block among the stages during the second sub-frame;
a readout circuit configured to read out the output sensing signals; and
a control circuit configured to generate a noise free signal using a first sensing signal read out during the first sub-frame and a second sensing signal read out during the second sub-frame and to generate a coordinate value to indicate the position of the object on the display panel based on the noise free signal.
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Accused Products
Abstract
In a display apparatus, one frame includes a first sub-frame in which a previous image is held and a second sub-frame in which a present image is displayed. A plurality of sensors recognizes an object disposed on a display panel and sequentially outputs sensing signals in response to scan signals. Sensing signals are divided into a first sensing signal read out during a first sub-frame and a second sensing signal read out during a second sub-frame, and a control circuit generates a noise free signal using the first and second sensing signals. Thus, a coordinate value indicating the position of the object may be generated based on the noise free signal, thereby preventing mis-operation or malfunction caused by the noise.
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Citations
23 Claims
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1. A display apparatus comprising:
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a display panel comprising a plurality of pixels to display frames and sub frames, the frames comprising a previous frame, a present frame and a next frame, and the sub frames comprising a first sub frame and a second sub frame, wherein the pixels receive data voltages of the previous frame during the first sub-frame of the present frame to hold a previous image and to receive data voltages of the present frame during the second sub-frame of the present frame to display a present image; a plurality of sensors configured to detect touch event on the display panel and to output sensing signals; a scan driver comprising a plurality of stages to output a plurality of scan signals to switch the sensors, the scan driver configured to drive a first scan block among the output stages during the first sub-frame and to drive a second scan block among the stages during the second sub-frame; a readout circuit configured to read out the output sensing signals; and a control circuit configured to generate a noise free signal using a first sensing signal read out during the first sub-frame and a second sensing signal read out during the second sub-frame and to generate a coordinate value to indicate the position of the object on the display panel based on the noise free signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus comprising:
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a panel comprising a pixel to display a frame comprising a first sub frame to hold previous frame and a second sub frame to display current frame, wherein a sensor is configured to sequentially output a series of sensing signals in response to detection of an object; and a controller configured to generate a noise free signal using a first sensing signal read out during the first sub-frame and a second sensing signal read out during the second sub-frame. - View Dependent Claims (22)
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23. A method comprising:
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arranging a plurality of pixels to display a frame comprising a first sub frame to hold a previous frame and a second sub frame to display a current frame; and generating a noise free signal using a first sensing signal read out during the first sub-frame and a second sensing signal read out during the second sub-frame, wherein a plurality of sensors are arranged to sequentially output a series of sensing signals in response to detection of an object.
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Specification