Stylus, display panel, touch display device and method

A technology of display panel and stylus, applied in the fields of touch display device, display panel and stylus, can solve the problems of drift, poor stability and high cost, and achieve the advantages of low cost, improved stability and reduced panel thickness. Effect

Pending Publication Date: 2019-12-24
KUSN INFOVISION OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electromagnetic pen needs to be used with the electromagnetic touch screen, and the cost is high
The capacitance formed by the capacitive pen will change with the temperature, humidity and grounding conditions, and it is prone to false responses caused by manual touches. Its stability is poor, and drifting often occurs

Method used

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  • Stylus, display panel, touch display device and method
  • Stylus, display panel, touch display device and method
  • Stylus, display panel, touch display device and method

Examples

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Embodiment Construction

[0025] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] figure 1 A cross-sectional view of a touch display device according to an embodiment of the present invention is shown.

[0028] Such as figure 1 As shown, the touch display device 100 includes a display panel 110 and a stylus 120 .

[0029] The display panel 110 includes a cover plate 119 and a plurality of structural layers under the cover plate 119 for displaying images. In this embodiment, one of the plurality of structural layers has a reflective surface for reflecting acoustic wav...

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PUM

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Abstract

The invention discloses a stylus, a display panel, a touch display device and a touch display method. The stylus comprises a sound wave generator used for generating sound waves; the sound wave receiver is used for receiving reflected waves generated by reflecting the sound waves by the reflecting surface; and the detection device is used for detecting a pattern corresponding to the contact on thereflection surface according to a time difference value between the emission time of the sound wave and the return time of the corresponding reflection wave, and obtaining a coordinate position corresponding to the contact according to the detected pattern. The stylus emits sound waves and receives reflected waves provided by the reflecting surface with the patterns, the patterns of the reflecting surface where the contacts are located are determined, and therefore the coordinate positions where the contacts are located are accurately positioned.

Description

technical field [0001] The present invention relates to the technical field of touch display, and more particularly, to a touch pen, a display panel, a touch display device and a method. Background technique [0002] With the popularization of touch display devices, the application of stylus is becoming more and more extensive. Touch pens include passive pens and active pens. Active pens currently on the market mainly include capacitive pens and electromagnetic pens. Capacitive pens are designed using the principle of capacitive sensing, and electromagnetic pens are designed using the principle of cutting magnetic field sensing. The electromagnetic pen needs to be used in conjunction with the electromagnetic touch screen, and the cost is high. The capacitance formed by the capacitive stylus will vary with temperature, humidity and grounding conditions, and it is susceptible to false responses caused by false touches by human hands. Its stability is poor, and drifting often...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/0354G02F1/1333
CPCG06F3/0412G06F3/03545G02F1/13338
Inventor 王鹏飞
Owner KUSN INFOVISION OPTOELECTRONICS
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