US 2019/0102036 A1 · TOUCH DISPLAY DEVICE HAVING A POWER OUTPUT CIRCUIT, CONTROLLER, AND TOUCH DISPLAY PANEL

Abstract

A touch display device can include a controller configured to output a synchronization signal having a first level during a display driving interval and having a second level during a touch driving interval; a power output circuit configured to receive the synchronization signal from the controller, in response to receiving the synchronization signal having the first level, set an output value of a high-potential voltage to a first voltage, and in response to receiving the synchronization signal having the second level, set the output value of the high-potential voltage to a second voltage that is lower than the first voltage; and a data driving circuit configured to receive image data from the controller, and output data voltages according to the image data by using the high-potential voltage received from the power output circuit to power the data driving circuit.

Claims20

Dependent claims

A touch display device comprising:

a controller configured to:
output a synchronization signal having a first level during a display driving interval and having a second level during a touch driving interval;
a power output circuit configured to:
receive the synchronization signal from the controller,
in response to receiving the synchronization signal having the first level, set an output value of a high-potential voltage to a first voltage, and
in response to receiving the synchronization signal having the second level, set the output value of the high-potential voltage to a second voltage that is lower than the first voltage;
and
a data driving circuit configured to:
receive image data from the controller, and
output data voltages according to the image data by using the high-potential voltage received from the power output circuit to power the data driving circuit.

7 more elements

A touch display device comprising:

a touch display panel including gate lines, data lines and touch electrodes, wherein the touch display panel is configured to operate in a display mode during at least two display driving intervals within one image frame and operate in a touch mode during at least two touch driving intervals within the one image frame;
a data driving circuit configured to drive the data lines arranged in the touch display panel;
and
a controller configured to:
receive external data from an external input source, and
upwardly adjust a gradation of the external data to generate image data and output the image data to the data driving circuit,
wherein the gradation of the external data is upwardly adjusted differently according to an order in which the image data is output to the data driving circuit.

4 more elements

A touch display device comprising:

a touch display panel including gate lines, data lines and touch electrodes, wherein the touch display panel is configured to apply a common display driving voltage to the touch electrodes during at least two display driving intervals within one image frame, and apply a touch driving signal to the touch electrodes during at least two touch driving intervals within the one image frame;
a controller configured to:
receive external data from an external input source,
upwardly adjust a gradation of the external data to generate image data, and
output the image data to the data driving circuit for driving the data lines;
a power control circuit configured to:
output a high-potential voltage having a first voltage level or a second voltage level lower than the first voltage level to the data driving circuit;
and
a data driving circuit configured to:
receive, during a display driving interval, the image data from the controller and the high-potential voltage having the first voltage level, and
drive, during the display driving interval, the data lines based on the image data and the high-potential voltage.

8 more elements

Dependencies are inferred from the claim text.

Touch display device having a power output circuit, controller, and touch display panel

Life of this patent

Touch display device having a power output circuit, controller, and touch display panel

Life of this patent

Abstract

Claims20