Touch display device, handwriting pen and detection method of handwriting pen

Abstract

A touch display device, a stylus pen and a detection method of the stylus pen are provided, the touch display device includes a first sensing element, a flexible display and a second sensing element, and the flexible display is located below the first sensing element. The flexible display is located between the first sensing element and the second sensing element. The second sensing element comprises a pressure sensing layer and a reaction force layer, wherein the pressure sensing layer is located between the flexible display and the reaction force layer. Through a stylus pen with a non-conductive material, a first sensing element detects that signals corresponding to the stylus pen and fingers or palms have different polarities. By capturing the intersection area of the signals detected by the first sensing element and the second sensing element, the technical effect of distinguishing the touch signals of the finger and the handwriting pen can be achieved. Besides, the second sensing element is configured to detect the pressure value, so that the second sensing element does not detect a third signal corresponding to the ghost point and the water, and the opportunity that the ghost point and the water are misjudged as signals of the handwriting pen can be avoided.

Description

technical field [0001] The present disclosure relates to a touch display device, in particular to a touch display device capable of distinguishing between a finger and a stylus. Background technique [0002] In the existing touch display device, the detection method of the capacitive stylus is the same as that of the finger or the palm, so it is difficult to distinguish the capacitive stylus, the finger or the palm and cause misidentification. In addition, in a touch display device without pressure feedback, it is also easy to misjudge the sensing signal generated by a ghost point or water as a capacitive pen or a hand. [0003] In view of this, how to provide a touch sensing device, stylus and detection method that can distinguish the touch area of ​​the stylus, finger and palm, and avoid misjudgment of ghost points and water is still an urgent research in the industry. one of the goals. Contents of the invention [0004] A technical aspect of the present disclosure is ...

AI Technical Summary

Problems solved by technology

[0002] In the existing touch display device, the detection method of the capacitive pen is the same as that of the finger or the palm, so it is difficult to distinguish the capacitive pen, the finger or the palm and cause misidentification

In addition, in a touch display device without pressure feedback, it is also easy to misjudge the sensing signal generated by ghost points or water as a capacitive pen or a hand

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