WO2014017749A1 - Dispositif d'entrée tactile détectant une variation de champ magnétique et une variation de capacité - Google Patents

Dispositif d'entrée tactile détectant une variation de champ magnétique et une variation de capacité Download PDF

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Publication number
WO2014017749A1
WO2014017749A1 PCT/KR2013/005737 KR2013005737W WO2014017749A1 WO 2014017749 A1 WO2014017749 A1 WO 2014017749A1 KR 2013005737 W KR2013005737 W KR 2013005737W WO 2014017749 A1 WO2014017749 A1 WO 2014017749A1
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WO
WIPO (PCT)
Prior art keywords
touch
change
magnetic field
capacitance
sensing
Prior art date
Application number
PCT/KR2013/005737
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English (en)
Korean (ko)
Inventor
김정철
이진국
조용진
Original Assignee
(주)이미지스테크놀로지
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Publication of WO2014017749A1 publication Critical patent/WO2014017749A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection

Definitions

  • the present invention relates to a touch input device, and more particularly, to a touch input device for detecting a change in a magnetic field and a change in capacitance.
  • Touch screen panel is a screen equipped with a special input device that allows the user to input the location when touched by hand. If a person's hand or an object touches a character or a specific location on the screen without using a keyboard, It refers to a touch input device that grasps the location and receives input data directly from the screen so that specific processing can be performed by the stored software. Due to this characteristic of the touch screen panel, it is widely used for guidance software in places that are widely used by the public, that is, subways, department stores, banks, etc., and is not only applied to sales terminals in various stores, but also for general business purposes. have. Recently, the touch panel is applied to most of the smart devices that are rapidly spreading to implement various functions.
  • a touch input device using a capacitive touch controller mainly uses a method of sensing mutual capacitance between two electrode terminals Tx / Rx. Since the capacitive method does not require pressure, a soft touch feeling can be realized as compared with the pressure sensitive touch input device.
  • the recent trend in the use of such a capacitive touch input device is an increasing number of applications that can use not only a touch by hand but also a very thin input device such as a stylus pen. This makes it possible to use a method of detecting small capacitance change by making a very thin conductor like a pen. In order to detect a thin conductor, a change in capacitance can be realized by maximizing its sensitivity.
  • capacitance is formed by an electric field, it may be caused by an unintended noise of an external electric field. It is affected a lot, which is a problem that greatly degrades the performance of the touch input device.
  • a method using a magnetic field is a typical touch input device for an input device such as a stylus pen. That is, when a magnetic field is generated on the display of the touch screen panel and then the stylus pen (inductance) is touched, energy generated by mutual resonance or magnetic induction is detected.
  • the conventional touch input devices are implemented using a stylus pen to detect a change in the magnetic field and a method of detecting the capacitance independently, and have to be separately processed after having a separate touch controller. The problem was that the number of parts and the efficiency of operational processing were lowered.
  • the present invention has been proposed to solve the above problems of the conventionally proposed methods, the method of sensing the change of the magnetic field and the capacitance sensing method of the same touch through the switching control of the touch pattern formed on the touch panel It is an object of the present invention to provide a touch input device that senses a change in magnetic field and a change in capacitance, which can be implemented on a panel.
  • Another object of the present invention is to provide a touch input device that senses a change in magnetic field and a change in capacitance, which reduces the number of parts, reduces manufacturing cost, and improves the ease of operation of the touch controller.
  • a touch input device for detecting a change in a magnetic field and a change in capacitance according to a feature of the present invention
  • a touch panel having a transparent electrode layer arranged to cross the vertical transparent electrodes and the horizontal transparent electrodes in a combination of a rectangular coordinate system to form a plurality of touch patterns;
  • the touch signal corresponding to the touch position of the touch pattern is electrically connected to each of the vertical transparent electrodes and the horizontal transparent electrodes forming the plurality of touch patterns, and when a touch signal is input to the touch pattern formed on the touch panel.
  • a touch controller for detecting a touch controller for detecting
  • the touch controller controls the touch controller
  • the transparent electrode layer Preferably, the transparent electrode layer, the transparent electrode layer, and
  • the touch signal may be configured in one layer of a transparent electrode in one layer, and in a two layer method of separating and stacking transparent electrodes in two layers.
  • the touch controller Preferably, the touch controller, the touch controller, the touch controller, and
  • a magnetic field sensing driver operating in a manner of sensing a magnetic field formed by driving a current in a loop of the touch pattern formed on the touch panel;
  • a capacitive sensing driver operating in a manner of sensing capacitance by connecting loops of a touch pattern formed on the touch panel into one;
  • the loop formed by the touch pattern may include a switch unit configured to perform switching control of the loop such that the loop is connected to one of the magnetic field sensing driver and the capacitive sensing driver.
  • the touch controller Preferably, the touch controller, the touch controller, the touch controller, and
  • the touch pattern formed on the touch panel may be driven in a time sharing manner to detect a change in capacitance or a change in magnetic field.
  • the touch controller In order to check the presence (contact signal) of the stylus pen, which is an external device composed of RLC with inductance, the touch controller normally detects a magnetic field at an intermittent period in the touch standby mode. After sensing, the touch controller may operate in a fast sensing cycle of the continuous sensing mode for continuous drawing.
  • the touch controller Even more preferably, the touch controller,
  • the fast detection cycle of the continuous detection mode may operate at a time period of 5 ms.
  • the stylus pen Even more preferably, the stylus pen,
  • It can be configured as one of a passive stylus for using resonance and an active stylus for using magnetic induction rather than resonance.
  • a method of detecting a change in a magnetic field through switching control of a touch pattern formed on a touch panel, and a method of detecting a capacitance It can be implemented on the same touch panel.
  • the manufacturing cost can be reduced by reducing the number of parts, and the ease of operation of the touch controller can be improved.
  • FIG. 1 is a diagram illustrating a configuration of a touch input device that detects a change in a magnetic field and a change in capacitance according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an internal configuration of a touch controller in a touch input device that detects a change in a magnetic field and a change in capacitance according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating a configuration of a touch input device operating in a capacitive sensing method in a touch input device for detecting a change in magnetic field and a change in capacitance according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a configuration of a touch input device operating in a magnetic field sensing method in a touch input device for detecting a change in a magnetic field and a change in capacitance according to an embodiment of the present invention.
  • FIG. 5 is a diagram for explaining driving of a magnetic field sensing method in a touch input device that senses a change in a magnetic field and a change in capacitance according to an embodiment of the present invention
  • touch panel 101 vertical transparent electrode
  • FIG. 1 is a diagram illustrating a configuration of a touch input device that detects a change in a magnetic field and a change in capacitance according to an embodiment of the present invention
  • FIG. 2 is a change in capacitance and a capacitance in accordance with an embodiment of the present invention.
  • a diagram illustrating an internal configuration of the touch controller As shown in FIG. 1, a touch input device for detecting a change in magnetic field and a change in capacitance according to an embodiment of the present invention may include a touch panel 100 and a touch controller 200. have.
  • the touch panel 100 is disposed so that the vertical transparent electrodes 101 and the horizontal transparent electrodes 102 intersect in a combination of a rectangular coordinate system to form a plurality of touch patterns 103. It is provided.
  • the transparent electrode layer 104 is composed of one layer method of forming a transparent electrode in one layer and a two layer method of separating and stacking transparent electrodes in two layers in order to detect a touch signal and detect a position. can do.
  • a loop formed by the touch pattern 103 is connected and driven and sensed according to the switching control of the touch controller 200, which will be described later, as shown in FIG. 3. It can operate in a capacitive sensing method.
  • one of the vertical transparent electrode 101 and the horizontal transparent electrode 102 forming the touch pattern 103 functions as a Tx electrode of the driving electrode in the capacitance sensing method, and the other Rx electrode of the sensing electrode Function as.
  • the touch panel 100 may be operated by applying a current to a loop formed by the touch pattern 103 in accordance with the switching control of the touch controller 200 to drive the magnetic field. It can work.
  • the touch controller 200 may perform a sensing operation through a magnetic sensor.
  • the touch panel 100 is a magnetic field that is independently implemented through the switching control of the vertical transparent electrode 101 and the horizontal transparent electrode 102 to form a touch pattern 103.
  • Method and capacitive method can be implemented on the same touch screen panel (TSP).
  • the touch controller 200 is electrically connected and connected to each of the vertical transparent electrodes 101 and the horizontal transparent electrodes 102 forming the plurality of touch patterns 103, and the touch patterns formed on the touch panel 100.
  • a touch signal is input to 103, a touch signal corresponding to the touch position of the touch pattern 103 is detected.
  • the touch controller 200 touches a magnetic field sensing method for detecting a change in a magnetic field through switching control of a loop formed by the touch pattern 103, and a capacitive sensing method for detecting a change in capacitance.
  • the pattern 103 may be controlled and sensed to operate.
  • the touch controller 200 operates in a manner of detecting a magnetic field formed by driving a current in a loop of the touch pattern 103 formed in the touch panel 100, and operates in a manner that detects a magnetic field.
  • a capacitive sensing driver 202 operating in a manner of sensing capacitance by connecting loops of the touch pattern 103 formed on the touch panel 100 to one, and a loop formed by the touch pattern 103
  • a switch unit 203 for performing switching control of the loop so as to be connected to one of the magnetic field sensing driver 201 and the capacitive sensing driver 202.
  • the touch controller 200 is driven in a time sharing manner to detect a capacitance change or a magnetic field change through the touch pattern 103 formed on the touch panel 100. That is, as shown in FIGS. 3 and 4, the capacitive sensing and the magnetic field sensing are time-divided by the switch unit 203 inside the touch controller 200, and the magnetic field sensing and the capacitive sensing are performed in the touch controller 200. Alternately.
  • the touch controller 200 may determine whether the stylus pen 10 (stylus pen), which is an external device composed of RLC with inductance, is present.
  • the magnetic field is sensed at an intermittent period of the touch standby mode, and after the stylus pen 10 is detected, the touch controller 200 may operate at a rapid detection period of the continuous sensing mode for continuous drawing.
  • the touch controller 200 may operate at a time period of 40 to 50 ms in an intermittent period of the touch standby mode, and may operate at a time period of 5 ms in a fast sensing period of the continuous sensing mode.
  • the touch controller 200 intermittently operates the sensing unit at a time period of 40 to 50 ms in order to reduce current consumption in the state of waiting for a touch initially, and after the stylus pen 10 is first touched, a soft and delay time
  • the sensor operates with a fast time period of 5 ms for a lack of touch.
  • time division driving of the magnetic field sensing driver 201 and the capacitive sensing driver 202 is performed, and time division according to both the touch standby mode and the continuous sensing of the touch pattern 103 is performed. To control the operation.
  • the stylus pen 10 may be configured as one of a passive stylus for using resonance and an active stylus for using magnetic induction rather than resonance.
  • FIG. 3 is a diagram illustrating a configuration of a touch input device operating in a capacitive sensing method in a touch input device that detects a change in a magnetic field and a change in capacitance according to an embodiment of the present invention.
  • the vertical transparent electrodes 101 and the horizontal transparent electrodes 102 forming the touch pattern 103 on the touch panel 100 are the switch unit 203 inside the touch controller 200.
  • Capacitive sensing according to the driving and detection of the vertical transparent electrode 101 and the horizontal transparent electrode 102 which are connected and connected to the capacitive sensing driver 202 as one, according to the switching control of It works in a way.
  • the operation principle when the switch unit 203 inside the touch controller 200 is controlled by capacitive sensing is the same as a general mutual capacitive sensing method, and thus a detailed description thereof will be omitted.
  • FIG. 4 is a diagram illustrating a configuration of a touch input device operating in a magnetic field sensing method in a touch input device that detects a change in magnetic field and a change in capacitance according to an embodiment of the present invention
  • FIG. 4 In the touch input device for detecting the change in the magnetic field and the change in capacitance according to an embodiment, it is a view for explaining the driving of the magnetic field detection method.
  • the vertical transparent electrodes 101 and the horizontal transparent electrodes 102 forming the touch pattern 103 on the touch panel 100 are the switch unit 203 inside the touch controller 200.
  • a loop is formed with the magnetic field sensing driver 201 according to the switching control of, and the magnetic field formed by applying a current to the loop is driven.
  • sensing is performed through mutual resonance or magnetic induction generated through touch by the stylus pen 10, which is an external element composed of inductance RLC. That is, as illustrated in FIG. 5, when the driving is stopped after generating a magnetic field by applying a signal to a loop implemented in the touch pattern 103 during a period in which Q1 is high, the touch controller 200 senses the detection. The touch is recognized by determining the signal of the section. That is, when the stylus pen 10, which is an external element, does not touch, resonance does not occur in the sensing section as shown in FIG. 5, and when the stylus pen 10 touches, as shown in FIG. 5, Resonance between the external inductor and the capacitor occurs, and the resonance is applied to the touch controller 200 as a signal, and the magnetic field touch can be recognized by sensing this.
  • the touch input device for detecting a change in magnetic field and a change in capacitance has the same method of detecting a change in magnetic field using a stylus pen and a method of detecting capacitance. It is possible to provide a touch input device implemented in a touch panel and capable of processing coordinate information sensed in two methods by one touch controller.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Electromagnetism (AREA)
  • Position Input By Displaying (AREA)

Abstract

La présente invention concerne un dispositif d'entrée tactile qui détecte une variation de champ magnétique et une variation de capacité. Selon l'invention, le procédé de détection d'une variation de champ magnétique et le procédé de détection d'une variation de capacité peuvent être exécutés sur le même panneau tactile par commande de la commutation d'un motif tactile formé sur le panneau tactile. La présente invention concerne également des informations de coordonnées, détectées à la fois par le procédé de détection de la variation de champ magnétique et le procédé de détection de la variation de capacité réalisés sur le même panneau tactile, qui sont conçues pour être traitées à l'aide d'un unique organe de commande tactile de façon à pouvoir réduire le nombre de composants, à pouvoir abaisser le coût de fabrication et à pouvoir améliorer la facilité de mise en œuvre de l'organe de commande tactile.
PCT/KR2013/005737 2012-07-25 2013-06-27 Dispositif d'entrée tactile détectant une variation de champ magnétique et une variation de capacité WO2014017749A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020120081117A KR101209514B1 (ko) 2012-07-25 2012-07-25 자기장의 변화와 정전용량의 변화를 감지하는 터치 입력 장치
KR10-2012-0081117 2012-07-25

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KR101489813B1 (ko) * 2013-06-28 2015-02-04 삼성전기주식회사 능동형 스타일러스 팬을 포함한 터치패널 및 그 제어방법
KR102113736B1 (ko) * 2013-07-02 2020-05-21 엘지디스플레이 주식회사 입력 시스템을 구비한 표시장치 및 그 구동 방법
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KR101811408B1 (ko) * 2015-07-02 2017-12-21 주식회사 하이딥 전자기 유도 방식의 위치 검출 센서를 이용한 터치 입력 장치, 터치 검출기 및 터치 검출 방법
KR101900293B1 (ko) * 2017-02-09 2018-09-19 주식회사 더한 정전용량 타입 터치 입력과 유도전자기장 타입 입력을 감지하는 다중 입력 장치
KR102260916B1 (ko) * 2018-07-17 2021-06-04 주식회사 아하정보통신 동 메쉬를 이용한 정전용량방식 및 전자기유도 방식을 사용하는 터치 센서
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KR102596709B1 (ko) * 2021-02-04 2023-11-02 주식회사 하이딥 스타일러스 구동장치 및 이를 포함하는 전자장치
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