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Touch pen

A stylus and touch sensing technology, applied to instruments, electrical digital data processing, data processing input/output process, etc., can solve problems such as large pen head, difficult touch operation, poor stylus induction, etc. Achieve the effect of reducing design difficulty and manufacturing cost, and reducing the size of the pen head

Inactive Publication Date: 2012-09-19
WINTEK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, quite a few designs of stylus used in capacitive touch devices have been proposed at present. In order to prevent the stylus from being too small to cause poor sensing of the stylus, the outer diameter of the stylus in these designs is about 5-6mm. without further zooming out
However, the pen head with an outer diameter of about 5-6mm is too large to perform precise touch operation.

Method used

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Embodiment Construction

[0062] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0063] figure 2 is a schematic diagram of a stylus for a capacitive touch device according to an embodiment of the present invention, image 3 A block diagram illustrating how the stylus works. Please also refer to figure 2 and image 3 The stylus 10 includes a signal receiving electrode 12 , a signal emitting electrode 14 , a power supply circuit 16 and an inverting amplifier circuit 18 .

[0064] The power supply circuit 16 provides an operating voltage for the stylus 10 , and the signal receiving e...

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Abstract

A capacitive touch pen includes a power supply circuit, a signal-receiving electrode, an inverted amplifying circuit and a signal-emitting electrode. The power supply circuit provides the touch pen with a working voltage, and the signal-receiving electrode receives at least one surface signal of a touch-sensing structure of a capacitive touch-sensitive device. The inverted amplifying circuit reversely amplifies the surface signal to generate a reversely amplified signal, and the signal-emitting electrode emits the reversely amplified signal to attenuate a detection signal of the capacitive touch-sensitive device in a position coinciding with a touch point of the touch pen.

Description

technical field [0001] The present invention relates to a stylus, in particular to a stylus for a capacitive touch device. Background technique [0002] Figure 1A and Figure 1B A schematic diagram showing a conventional design for detecting the finger touch position on the capacitive touch device 100 . For example, each Y-axis electrode 102 can send out voltage pulses in sequence, and detect the charge generated by each X-axis electrode 104 due to induction. Finger capacitance will be generated at the touch position of the finger 106 and the human body is grounded, so that the pulse signal transmitted to the X-axis electrodes 104 will be weakened relative to the non-touch position, so it can be detected which X-axis electrodes 104 are touched by the fingers 106, and then calculated The finger touch position coordinates. Furthermore, in this example, voltage pulses are applied sequentially to each Y-axis electrode 102 , so even if the finger 106 touches multiple position...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/033
CPCG06F3/03545G06F3/044G06F3/0441G06F3/0442G06F3/038
Inventor 林明传王文宏林志强陈世正黄哲彦王雯欣
Owner WINTEK CORP