Touch panel equipped display device and driving method for the same
First Claim
Patent Images
1. A touch panel equipped display device comprising:
- a display panel and a capacitance-type touch panel arranged on an observer-facing surface of the display panel or disposed in the display panel,the display panel including;
a plurality of data signal lines and a plurality of scan signal lines, which are arranged to extend perpendicularly or substantially perpendicularly to each other; and
a data signal line driving circuit arranged to successively supply a voltage to the plurality of data signal lines one by one,the touch panel including;
a plurality of transmission electrodes and a plurality of reception electrodes, which are arranged to extend perpendicularly or substantially perpendicularly to each other;
an integral circuit;
a switching element arranged to connect any one of the plurality of reception electrodes to the integral circuit; and
a controller arranged and programmed to change over on- and off-states of the switching element at least one or more times during a period in which the voltage is supplied to the plurality of data signal lines;
whereinthe controller is arranged and programmed to keep the on- or off-state of the switching element for a certain time from a moment at which the data signal line driving circuit changes the voltage;
the controller is further arranged and programmed to change the on- and off-state of the switching element more than once during one horizontal scan period; and
the display panel further includes an SSD switch and the controller is arranged and programmed to change the on- and off-state of the switching element more than once during a period within the one horizontal scan period, the period within the one horizontal scan period corresponding to a time during which the SSD switch is connected to one of the plurality of data signal lines which corresponds to a particular one of different colors of the display device.
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Accused Products
Abstract
A touch panel includes a plurality of drive lines and a plurality of sense lines, a sampling switch connected to the sense lines, and an integral circuit connected to the sense lines through the sampling switch. The sampling switch is arranged to keep an on- or off-state for a certain time from a moment at which a voltage of a source bus line is changed.
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Citations
7 Claims
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1. A touch panel equipped display device comprising:
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a display panel and a capacitance-type touch panel arranged on an observer-facing surface of the display panel or disposed in the display panel, the display panel including; a plurality of data signal lines and a plurality of scan signal lines, which are arranged to extend perpendicularly or substantially perpendicularly to each other; and a data signal line driving circuit arranged to successively supply a voltage to the plurality of data signal lines one by one, the touch panel including; a plurality of transmission electrodes and a plurality of reception electrodes, which are arranged to extend perpendicularly or substantially perpendicularly to each other; an integral circuit; a switching element arranged to connect any one of the plurality of reception electrodes to the integral circuit; and a controller arranged and programmed to change over on- and off-states of the switching element at least one or more times during a period in which the voltage is supplied to the plurality of data signal lines;
whereinthe controller is arranged and programmed to keep the on- or off-state of the switching element for a certain time from a moment at which the data signal line driving circuit changes the voltage; the controller is further arranged and programmed to change the on- and off-state of the switching element more than once during one horizontal scan period; and the display panel further includes an SSD switch and the controller is arranged and programmed to change the on- and off-state of the switching element more than once during a period within the one horizontal scan period, the period within the one horizontal scan period corresponding to a time during which the SSD switch is connected to one of the plurality of data signal lines which corresponds to a particular one of different colors of the display device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A driving method for a touch panel equipped display device including a display panel and a capacitance-type touch panel arranged on an observer-facing surface of the display panel or disposed in the display panel,
the display panel including: -
a plurality of data signal lines and a plurality of scan signal lines, which are arranged to extend perpendicularly or substantially perpendicularly to each other; and a data signal line driving circuit arranged to successively supply a voltage to the plural data signal lines one by one, the touch panel including; a plurality of transmission electrodes and a plurality of reception electrodes, which are arranged to extend perpendicularly or substantially perpendicularly to each other; an integral circuit; a switching element arranged to connect any one of the plural reception electrodes to the integral circuit; and a controller arranged and programmed to change over on- and off-states of the switching element at least one or more times during a period in which the voltage is supplied to the plural data signal lines;
whereinthe controller is arranged and programmed to keep the on- or off-state of the switching element for a certain time from a moment at which the data signal line driving circuit changes the voltage; the controller is further arranged and programmed to change the on- and off-state of the switching element more than once during one horizontal scan period; and the display panel further includes an SSD switch and the controller is arranged and programmed to change the on- and off-state of the switching element more than once during a period within the one horizontal scan period, the period within the one horizontal scan period corresponding to a time during which the SSD switch is connected to one of the plurality of data signal lines which corresponds to a particular one of different colors of the display device.
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Specification