TIME-DIVISION DRIVING TYPE TOUCH SENSING DEVICE AND METHOD FOR DRIVING THE SAME
First Claim
1. A touch sensing display device supporting a pixel driving period and a touch driving period in each frame period, the device comprising:
- a display panel having data lines and touch sensing lines, the data lines coupled to pixels of the display panel;
a data driving circuit to drive data signals onto the data lines during the pixel driving period of the frame period, the data driving circuit powered by a first supply voltage;
a touch readout circuit to generate touch data from signals of the touch sensing lines during the touch driving period of the frame period, the touch driving period distinct from the pixel driving period; and
a first power controller to cut off the first supply voltage of the data driving circuit during the touch driving period of the frame period.
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Accused Products
Abstract
A touch sensing display device supporting a pixel driving period and a touch driving period in each frame period. The device comprises a display panel having data lines and touch sensing lines, the data lines coupled to pixels of the display panel. A data driving circuit drives data signals onto the data lines during the pixel driving period of the frame period. A touch readout circuit generates touch data of signals of the touch sensing lines during the touch driving period of the frame period, the touch driving period distinct of the pixel driving period. A supply voltage of the data driving circuit can be cut off during the touch driving period, and a supply voltage of the touch readout circuit can be cut off during the pixel driving period.
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Citations
19 Claims
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1. A touch sensing display device supporting a pixel driving period and a touch driving period in each frame period, the device comprising:
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a display panel having data lines and touch sensing lines, the data lines coupled to pixels of the display panel; a data driving circuit to drive data signals onto the data lines during the pixel driving period of the frame period, the data driving circuit powered by a first supply voltage; a touch readout circuit to generate touch data from signals of the touch sensing lines during the touch driving period of the frame period, the touch driving period distinct from the pixel driving period; and a first power controller to cut off the first supply voltage of the data driving circuit during the touch driving period of the frame period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A touch sensing display device supporting a pixel driving period and a touch driving period in each frame period, the device comprising:
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a display panel having data lines and touch sensing lines, the data lines coupled to pixels of the display panel; a data driving circuit to drive data voltages onto the data lines during the pixel driving period of the frame period; a touch readout circuit to generate touch data from signals of the touch sensing lines during the touch driving period of the frame period, the touch driving period distinct from the pixel driving period, the touch readout circuit powered by a first supply voltage; and a first power controller to cut off the first supply voltage of the touch readout circuit during the pixel driving period of the frame period. - View Dependent Claims (10, 11, 12, 13, 14, 18, 19)
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15. A method of operation in a touch sensing display device, comprising:
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driving, by a data driving circuit powered by a first supply voltage, data voltages onto data lines of a display panel during a pixel driving period of a frame period, the data lines coupled to pixels of the display panel; generating touch data from signals of touch sensing lines of the display panel during a touch driving period of the frame period, the touch driving period distinct from the pixel driving period; and cutting off the first supply voltage of the data driving circuit during the touch driving period of the frame period. - View Dependent Claims (16, 17)
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Specification