Touch detecting apparatus and touch detecting method using pixel or pixels in display devices
AssigneeG2Touch Co., Ltd.
InventorSung Ho Lee
Life of this patent
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Abstract
Disclosed herein are a touch detecting apparatus and a touch detecting method using a pixel or pixels in display devices including a means for applying an AC input voltage to a drive IC of the display device and detecting a change in touch capacitance between the pixel and an object in synchronization with a change in amplitude of the AC input voltage. In particular, the touch detecting apparatus using a pixel or pixels in display devices according to an exemplary embodiment of the present invention includes: a grayscale voltage generator applying a grayscale voltage to a source line and a sensing signal processor detecting a touch signal based on a feedback voltage of the grayscale voltage applied to the source line.
Claims22
A touch detecting apparatus using a pixel or pixels in display devices, the apparatus comprising:
- a grayscale voltage generator configured to generate a first grayscale voltage applied to the pixel or the pixels in the display devices;
- and
- a sensing signal processor configured to detect a touch signal based on the first grayscale voltage applied to the pixel or the pixels and a second grayscale voltage fed back based on a touch capacitance formed between the pixel or the pixels and a touch input means,
- wherein the touch capacitance is generated between the touch input means and the pixel or the pixels without being intervened by a common electrode of the display devices as the touch input means approaches the pixel or the pixels.
A touch detecting method using a pixel or pixels in display devices, the method comprising:
- generating a first grayscale voltage applied to the pixel or the pixels in the display devices;
- and
- detecting a touch signal based on the first grayscale voltage applied to the pixel or the pixels and a second grayscale voltage fed back based on a touch capacitance formed between the pixel or the pixels and a touch input means,
- wherein the touch capacitance is generated between the touch input means and the pixel or the pixels without being intervened by a common electrode of the display devices as the touch input means approaches the pixel or the pixels.
Dependencies are inferred from the claim text.