Active stylus, touch input system and driving method thereof

A stylus, active technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problems of high cost and power consumption, and achieve low cost, low power consumption, and cost reduction. and the effect of power consumption

Active Publication Date: 2019-01-18
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an active stylus and a touch display device to ...

Method used

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  • Active stylus, touch input system and driving method thereof
  • Active stylus, touch input system and driving method thereof
  • Active stylus, touch input system and driving method thereof

Examples

Experimental program
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no. 1 example

[0049]The invention provides an active touch pen, which is applied to a touch module.

[0050] Such as figure 1 As shown, the active stylus includes a pen tip 110 and a pen body 120 , and the pen body 120 is provided with a control unit 130 and a signal providing unit 140 .

[0051] The control unit 130 is used to detect the detection parameter value corresponding to the tilt angle of the active stylus, and adjust the signal amount of the output signal provided by the signal providing unit 140 according to the detected detection parameter value; the input terminal of the signal providing unit 140 is connected to the The output terminal of the control unit 130 is connected, the output terminal of the signal providing unit 140 is connected with the pen tip 110 , and the signal providing unit 140 is used for providing an output signal through the pen tip 110 .

[0052] In this embodiment, the inclination angle of the pen body 120 of the active stylus refers to the axial directio...

no. 2 example

[0099] The present invention also provides a touch input system, including a touch module and an active stylus, wherein the active stylus is any one of the above active stylus.

[0100] The touch module includes a plurality of touch electrodes and a touch chip connected to the touch electrodes; the touch chip is used to detect the output signal of each touch electrode according to the output signal provided by the active stylus received by each touch electrode. The capacitance variation of each touch electrode increases with the increase of the signal amount of the output signal provided by the active stylus, and decreases with the decrease of the signal amount of the output signal provided by the active stylus.

[0101] The touch electrodes of the touch module include Tx electrodes and Rx electrodes. During use, a coupling capacitance can be formed between the Tx electrodes and the Rx electrodes. When the user's hand or other conductors touch the touch module, the Tx The mutu...

no. 3 example

[0109] The present invention also provides a driving method of a touch input system, such as Figure 11 As shown, the method includes the following steps:

[0110] Step 301: The control unit 130 in the active stylus detects the detection parameter value corresponding to the tilt angle of the active stylus, and adjusts the output signal provided by the signal providing unit 140 according to the detection parameter value. signal;

[0111] Step 302: the signal providing unit 140 in the active stylus provides the output signal through the pen tip 110;

[0112] Step 303: The touch chip in the touch module detects the capacitance variation of each touch electrode according to the output signal provided by the signal providing unit 140 received by each touch electrode in the touch module The capacitance variation of each touch electrode increases with the increase of the signal amount of the output signal provided by the active stylus, and decreases with the decrease of the signal ...

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Abstract

The invention provides an active stylus, a touch input system and a driving method thereof. The active touch pen comprises a pen tip and a pen body, wherein a control unit and a signal providing unitare arranged in the pen body; The control unit is used for detecting the detection parameter value corresponding to the tilt angle of the pen body, and adjusting the signal quantity of the output signal supplied from the signal providing unit according to the detection parameter value. An input terminal of the signal supply unit is connected to an output terminal of the control unit for supplyingan output signal through a pen tip. The invention simplifies the control and use process of the active stylus by setting the control unit to detect the detection parameter value corresponding to the tilt angle of the active stylus and adjusting the signal quantity of the output signal according to the detected detection parameter value, and improves the convenience of use. At the same time, the cost and the power consumption can be reduced compared with the existing active pen using the pressure sensor.

Description

technical field [0001] The invention relates to the field of touch technology, in particular to an active touch pen, a touch input system and a driving method thereof. Background technique [0002] Existing capacitive stylus is mainly divided into passive stylus and active stylus. Among them, when the passive stylus touches the touch screen, it affects the contact between the emitter and the receiver of the touch screen. The coupling capacitance is used to generate a touch signal, while the active stylus is used as an emitter to form a coupling capacitance with the receiver of the touch screen to generate an output signal. The existing active stylus uses a pressure sensor to control the intensity of the output signal. For example, the signal amount of the output signal can be controlled by detecting the contact pressure between the pen tip and the touch screen or detecting the pressing pressure of the user's finger. The cost of this active stylus is relatively high, and the...

Claims

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Application Information

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IPC IPC(8): G06F3/0354G06F3/038G06F3/041G06F3/044
CPCG06F3/03545G06F3/0383G06F3/0416G06F3/044G06F3/0442G06F3/04162
Inventor 王猛杨光磊方志祥
Owner HEFEI BOE OPTOELECTRONICS TECH
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