WO2020048060A1 - 触控显示器及其触控检测方法 - Google Patents

触控显示器及其触控检测方法 Download PDF

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Publication number
WO2020048060A1
WO2020048060A1 PCT/CN2018/124277 CN2018124277W WO2020048060A1 WO 2020048060 A1 WO2020048060 A1 WO 2020048060A1 CN 2018124277 W CN2018124277 W CN 2018124277W WO 2020048060 A1 WO2020048060 A1 WO 2020048060A1
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Prior art keywords
touch
capacitance
touch screen
display panel
detection circuit
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English (en)
French (fr)
Inventor
田新斌
徐向阳
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/0412—Digitisers structurally integrated in a display

Definitions

  • the present invention relates to the field of display technology, and in particular, to a touch display and a touch method thereof.
  • the touch screen has a responsive interface, which can save a lot of time and improve work efficiency. Therefore, the touch screen has been applied to all aspects of people's lives, such as mobile phones, tablet computers, notebook computers, monitors, televisions, and so on.
  • Capacitive touch screens have the advantages of high light transmittance, durability and good touch experience, so most products on the market currently use capacitive touch technology.
  • Touch recognition methods are divided into single-touch and multi-touch technologies.
  • Single touch as the name suggests, if more than two points are touched at the same time, you cannot make a correct response, but single touch has the advantages of low price and simple operation, so you can make a single touch
  • the display is applied to the halls of hospitals, libraries, banks, museums, etc., as well as autonomous bus inquiry machines, and even home televisions.
  • traditional single-touch control panels have the disadvantages of poor sensitivity, large power consumption, and high manufacturing costs.
  • An object of the present invention is to provide a touch display, which has a simple single-touch structure, can be widely used, and avoids the situation of misjudgment of touch, and realizes accurate touch positioning.
  • the touch display of the present invention includes:
  • a signal generator provided on the periphery of the display panel and connected to the capacitance detection circuit, the signal generator continuously emitting a reference signal including a reference capacitance value;
  • At least one capacitance change receiving detector is provided on the periphery of the display panel and is connected to the capacitance detection circuit.
  • the at least one capacitance change receiving detector is configured to receive a reference signal from the signal generator, and according to the reference signal, When the touch screen is touched, a detection signal is generated through a capacitance change of the capacitance detection circuit, and the detection signal includes a change in capacitance value and a resistance current function waveform corresponding to a touch position of the touch screen;
  • a touch control chip connected to the signal generator and at least one capacitance change receiving detector, the touch control chip is configured to provide touch positioning of the touch screen through a touch control chip algorithm according to the resistance current function waveform. .
  • the touch display includes three of the capacitance change receiving detections, which are respectively disposed at three corners of the display panel, and the signal generator is disposed at another corner of the display panel.
  • the distance between each of the capacitance change receiving detectors and the touch position of the touch screen is different, and the received resistance current function waveforms are different.
  • the touch display further includes a case supporting the display panel, and the signal generator and the at least one capacitance change receiving detector are located between the display panel and the case. between.
  • the capacitance detection circuit of the touch screen includes a lateral electrode array and a longitudinal electrode array, and the lateral electrode array and the longitudinal electrode array are perpendicular to each other in an extending direction.
  • the touch screen is made of indium tin oxide, and the signal generator and the at least one capacitance change receiving detector are connected to the capacitance detection through an anisotropic conductive adhesive film. Circuit.
  • the touch chip is configured to determine a difference between capacitance values of the detection signal and the reference signal, and the difference value exceeds a predetermined range of the reference capacitance value, and the The touch chip analyzes and calculates the touch chip algorithm according to the resistance current function waveform to provide touch positioning of the touch screen.
  • the present invention further provides a touch detection method for a touch display.
  • the touch display includes a display panel and a touch screen formed on the display panel.
  • the touch detection method includes:
  • a signal generator is provided on the periphery of the display panel, the signal generator is connected to the capacitance detection circuit and the touch chip, and continuously emits a reference signal including a reference capacitance value;
  • At least one capacitance change receiving detector is provided on the periphery of the display panel, and is connected to the capacitance detection circuit and the touch chip.
  • the at least one capacitance change receiving detector is used to receive a reference signal from the signal generator. ;
  • the at least one capacitance change receiving detector generates a detection signal according to a capacitance change of the capacitance detection circuit when the touch screen is touched, and the detection signal includes a change in a capacitance value and a value corresponding to the touch screen.
  • the touch chip provides touch positioning of the touch screen by analyzing and calculating the touch chip algorithm according to the resistance current function waveform.
  • the three corners of the display panel are respectively provided with the capacitance change receiving detection, and the other corner of the display panel is provided with the signal generator, wherein each of the capacitance changes
  • the distance between the receiving probe and the touch position of the touch screen is different, and the received resistance current function waveforms are different.
  • the touch chip is configured to determine a difference between the capacitance values of the detection signal and the reference signal, and the difference exceeds a predetermined range of the reference capacitance value, and the touch
  • the control chip analyzes and calculates the touch chip algorithm according to the resistance current function waveform to provide touch positioning of the touch screen.
  • the present invention further provides a touch display, including:
  • a touch screen having a rectangular configuration corresponding to a display panel and disposed on the display panel, the touch screen including a capacitance detection circuit;
  • a signal generator provided at a corner of the periphery of the display panel and connected to the capacitance detection circuit, the signal generator continuously emitting a reference signal including a reference capacitance value;
  • Three capacitance change receiving detectors are provided at three corners of the periphery of the display panel and connected to the capacitance detection circuit.
  • the three capacitance change receiving detectors are configured to receive a reference signal from the signal generator. And generating a detection signal according to a capacitance change of the capacitance detection circuit when the touch screen is touched, the detection signal including a change in capacitance value and a resistance current function waveform corresponding to a touch position of the touch screen;
  • the distance between each of the capacitance change receiving detectors and the touch position of the touch screen is different, and the received resistance current function waveforms are different.
  • the capacitance detection circuit of the touch screen includes a lateral electrode array and a longitudinal electrode array, and the lateral electrode array and the longitudinal electrode array are perpendicular to each other in an extending direction.
  • the touch chip is configured to determine a difference between capacitance values of the detection signal and the reference signal, and the difference value exceeds a predetermined range of the reference capacitance value, and the The touch chip analyzes and calculates the touch chip algorithm according to the resistance current function waveform to provide touch positioning of the touch screen.
  • the touch display of the present invention uses the capacitance change receiving detectors at different positions to receive different resistance current function waveforms of the capacitance change of the touch screen, and the change capacitance value and the reference capacitance value are judged by the touch chip.
  • the difference value exceeds a predetermined range of the reference capacitance value, accurate touch positioning can be achieved through the analysis and calculation of the touch chip, which can effectively solve the shortcomings of traditional touch screens, such as large power consumption, easy misjudgment, and poor sensitivity.
  • FIG. 1 is a schematic structural diagram of a touch display according to an embodiment of the present invention.
  • FIG. 2 is a schematic partial cross-sectional view of a touch display according to an embodiment of the present invention.
  • FIG. 3 is a functional schematic diagram of a touch display according to an embodiment of the present invention.
  • FIG. 4 is a block flowchart of a touch method of a touch display according to the present invention.
  • the invention is a touch display and a touch control method of the touch display, which can provide a simple single-point touch structure and realize accurate touch positioning according to the capacitance change of the touch screen.
  • the touch display of the present invention includes a display panel and a touch screen superimposed on the display panel.
  • the display panel may be a thin film transistor liquid crystal display panel or an organic light emitting diode display panel, which can be applied to hospitals, For libraries, banks, or museums that provide inquiries.
  • FIG. 1 is a schematic structural diagram of a touch display according to an embodiment of the present invention.
  • the touch display 1 of the present invention includes a display panel 2 and a touch screen 3 provided on the display panel 2.
  • the touch screen 3 is sputtered on the display panel 2 using indium tin oxide (ITO), and a capacitance detection circuit 30 is formed.
  • ITO indium tin oxide
  • the capacitive touch technology of the touch screen 3 of the present invention is a touch technology that uses a finger or a stylus (not shown) to generate a change in capacitance when the touch screen 3 is touched.
  • the capacitance detection circuit 30 includes a lateral electrode array 301 and a vertical electrode array 302, and the lateral electrode array 301 and the vertical electrode array 302 are perpendicular to each other in an extending direction.
  • the display panel 2 and the touch screen 3 of this case both have corresponding rectangular configurations.
  • the touch display 1 of the present invention includes a touch chip 31, a signal generator 32, and three capacitance change receiving detectors 33, and the touch chip 31 is connected to the signal generator 32 and The three capacitance change receiving detectors 33.
  • the signal generator 32, the capacitance change receiving detector 33, and the touch chip 31 the effect of precise touch positioning is achieved.
  • one corner of the periphery of the display panel 2 is provided with the signal generator 32, and the other three corners of the periphery of the display panel 2 are provided with the capacitance change receiving detector 33, respectively.
  • the present invention can also be provided with only a single capacitance change receiving detector, and the touch chip with high computing capability can also achieve accurate touch positioning.
  • FIG. 2 is a schematic partial cross-sectional view of a touch display according to an embodiment of the present invention.
  • the signal generator 32 and the three capacitance change receiving detectors 33 pass through an anisotropic conductive adhesive film containing conductive particles.
  • a conductive film (ACF) 4 is connected to the capacitance detection circuit 30 of the touch screen 3 to make the electrodes between them conductive.
  • the signal generator 32 is connected to the capacitance detection circuit 30 and the touch chip 31, and is configured to continuously emit a reference signal including a reference capacitance value.
  • Each of the capacitance change receiving detectors 33 is connected to the capacitance detection circuit 30 and the touch chip 31, and is configured to receive a reference signal from the signal generator 32, and according to when the touch screen 3 is touched, A detection signal is generated through a change in the capacitance of the capacitance detection circuit 30.
  • the detection signal includes a function of changing a capacitance value and a resistance current corresponding to a touch position of the touch screen 3.
  • the touch display 1 further includes a casing 5 supporting the display panel 2.
  • the signal generator 32 and the three capacitance change receiving detectors 33 are located between the display panel 2 and the casing 5, and are covered by the frame of the casing 5 by using the entire assembly machine.
  • FIG. 3 is a functional schematic diagram of a touch display according to an embodiment of the present invention.
  • the signal generator 32 continuously emits a reference signal
  • the three capacitance change receiving detectors 33 synchronously receive the reference signal from the signal generator 32.
  • the capacitance of the capacitance detection circuit 30 changes, and the three capacitance change receiving detectors 33 respectively receive the corresponding touch screens.
  • the touch chip 31 judges the difference between the capacitance values of the detection signal and the reference signal, and when the difference exceeds a predetermined range of the reference capacitance value, the touch chip 31 is based on
  • the three resistor current function waveforms can be accurately provided by the touch chip algorithm through analysis and calculation to provide the touch positioning of the touch screen 3.
  • the touch chip 31 As mentioned above, the difference between the capacitance value of the detection signal and the reference signal must exceed a predetermined range of the reference capacitance value, and then the touch chip 31 will be based on the three resistance current function waveforms.
  • the touch chip 3 analyzes and calculates the touch positioning of the touch screen 3. That is, if the capacitance change of the touch screen 3 is caused by no touch or the presence of dust or water droplets on the surface, but the capacitance change does not exceed the predetermined range of the reference capacitance value, the touch chip 31 will not perform touch Control chip algorithm analysis and calculation. Therefore, the touch positioning of the touch screen 3 will not misjudge a single-point touch as a multi-point touch and cause recognition errors.
  • the touch display 1 of the present invention uses the capacitance change receiving detectors 33 at different positions to receive different RC function waveforms of the capacitance change of the touch screen 3, and judges the changed capacitance value and When the difference of the reference capacitance value exceeds a predetermined range of the reference capacitance value, accurate touch positioning is achieved through analysis and calculation by the touch chip 31. Since the touch screen 3 of the present invention uses the signal generator and the capacitance change receiving detector to set up, it does not need to configure a complicated circuit structure, which can effectively solve the traditional touch screen with large power consumption, easily causing misjudgment, and poor sensitivity. Disadvantages.
  • FIG. 4 is a block flowchart of a touch method of a touch display according to the present invention.
  • the touch detection method of the touch display of the present invention includes:
  • Step S1 forming a capacitance detection circuit on the touch screen
  • Step S2 Provide a touch chip.
  • Step S3 A signal generator is provided on the periphery of the display panel, the signal generator is connected to the touch chip, and continuously emits a reference signal including a reference capacitance value.
  • Step S4 setting at least one capacitance change receiving detector on the periphery of the display panel, which is connected to the capacitance detection circuit and the touch control chip, and the at least one capacitance change receiving detector is used to receive the signal generator Reference signal
  • Step S5 The at least one capacitance change receiving detector generates a detection signal according to the capacitance change of the capacitance detection circuit when the touch screen is touched, and the detection signal includes changing a capacitance value and corresponding to the touch.
  • Step S6 The touch chip provides touch positioning of the touch screen by analyzing and calculating the touch chip algorithm according to the resistance current function waveform.
  • the three corners of the display panel are respectively provided with the capacitance change receiving detection, and the other corner of the display panel is provided with the signal generator, wherein each of the capacitance changes
  • the distance between the receiving probe and the touch position of the touch screen is different, and the received resistance current function waveforms are different.
  • the touch chip is configured to determine a difference between the capacitance values of the detection signal and the reference signal, and the difference exceeds a predetermined range of the reference capacitance value, and the touch The control chip analyzes and calculates the touch chip algorithm according to the resistance current function waveform to provide touch positioning of the touch screen.

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Abstract

一种触控显示器，包括显示面板及触控屏。触控屏包括电容检测电路；信号发生器设于显示面板的外围，并连接电容检测电路，且持续地发出包括一基准电容值的基准信号。至少一电容变化接收探测器，设于显示面板的外围，并连接电容检测电路。所述至少一电容变化接收探测器用于接收信号发生器发出的基准信号，并根据触控屏被触摸时，经由电容检测电路的电容变化而产生检测信号。检测信号包含改变电容值及对应触控屏的触摸位置的电阻电流函数波形。触控芯片用于依据电阻电流函数波形通过触控芯片算法分析计算而提供触控屏的触摸定位。

Description

触控显示器及其触控检测方法 技术领域
本发明涉及显示技术领域，特别是涉及一种触控显示器及其触控方法。
 背景技术
触摸屏拥有反应灵敏的界面，可以节省大量时间，提高工作效率，所以目前触摸屏已应用到人们生活的方方面面，手机、平板电脑、笔记型电脑、显示器、电视等。
触控技术有很多方式，比如电阻式（类比式和电子式）、红外线式、光学感应式、声波式、电子式、
Figure 5167
嵌式(in-cell或on-cell)、电容式等。由于电容式触摸屏具有高透光率、经久耐用及触摸体验效果好等优点，所以目前市场上大部分产品多采用电容式触控技术。
触控识别方式分为单点触控与多点触控技术。单点触控，顾名思义，若同时有两个以上的点被触碰到，就不能做出正确反应，但是单点触控具有价格低廉、操作比较简单等优点，所以可以制作出单点触控显示器应用到医院、图书馆、银行、博物馆等大厅及公交自主查询机等领域，甚至家用电视。然而，传统单点触控控面板具有灵敏度不佳、功耗大、制作成本高的缺点。
 技术问题
本发明的目的在于提供一种触控显示器，其具有简单的单点触控构造，可被广泛地应用，并可避免触控误判的状况，实现精确的触摸定位。
 技术解决方案
为达到前述目的，本发明的触控显示器包括：
显示面板；
触控屏，设于所述显示面板上，所述触控屏包括电容检测电路；
一信号发生器，设于所述显示面板的外围，并连接所述电容检测电路，所述信号发生器持续地发出包括一基准电容值的基准信号；
至少一电容变化接收探测器，设于所述显示面板的外围，并连接所述电容检测电路，所述至少一电容变化接收探测器用于接收所述信号发生器发出的基准信号，并根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及对应所述触控屏的触摸位置的电阻电流函数波形；及
触控芯片，连接所述信号发生器及至少一电容变化接收探测器，所述触控芯片用于依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
在一优选实施例中，所述触控显示器包括三个所述电容变化接收探测，分别设于所述显示面板的三个角落，所述信号发生器设于所述显示面板的另一个角落。
在另一优选实施例中，每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
在另一优选实施例中，所述触控显示器还包括支撑所述显示面板的机壳，所述信号发生器及所述至少一电容变化接收探测器位于所述显示面板和所述机壳之间。
在另一优选实施例中，所述触控屏的电容检测电路包括横向电极阵列和纵向电极阵列，所述横向电极阵列和所述纵向电极阵列在延伸方向相互垂直。
在另一优选实施例中，所述触控屏为铟锡氧化物所制，且所述信号发生器及所述至少一电容变化接收探测器通过异方性导电胶膜连接于所述电容检测电路。
在另一优选实施例中，所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
本发明另外提供一种触控显示器的触控检测方法，所述触控显示器包括显示面板及形成于所述显示面板上的触控屏，其特征在于，所述触控检测方法包括：
在所述触控屏形成电容检测电路；
提供一触控芯片；
在所述显示面板的外围设置一信号发生器，所述信号发生器连接所述电容检测电路及所述触控芯片，并持续地发出包括一基准电容值的基准信号；
在所述显示面板的外围设置至少一电容变化接收探测器，其连接所述电容检测电路及所述触控芯片，所述至少一电容变化接收探测器用于接收所述信号发生器发出的基准信号；
所述至少一电容变化接收探测器根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及相对应所述触控屏的触摸位置的电阻电流函数波形；及
所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
在一优选实施例中，在所述显示面板外围的三个角落分别设置所述电容变化接收探测，而所述显示面板的另一个角落设置有所述信号发生器，其中每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
在一优选实施例中，所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
本发明另外提供一种触控显示器，包括：
显示面板，具有矩形构型；
触控屏，具有对应于显示面板的矩形构型，并设于所述显示面板上，所述触控屏包括电容检测电路；
一信号发生器，设于所述显示面板的外围的一角落，并连接所述电容检测电路，所述信号发生器持续地发出包括一基准电容值的基准信号；
三个电容变化接收探测器，设于所述显示面板的外围的三个角落，并连接所述电容检测电路，所述三个电容变化接收探测器用于接收所述信号发生器发出的基准信号，并根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及对应所述触控屏的触摸位置的电阻电流函数波形；及
触控芯片，连接所述信号发生器及所述三个电容变化接收探测器，所述触控芯片用于依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
在一优选实施例中，每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
在另一优选实施例中，所述触控屏的电容检测电路包括横向电极阵列和纵向电极阵列，所述横向电极阵列和所述纵向电极阵列在延伸方向相互垂直。
在另一优选实施例中，所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
 有益效果
本发明的触控显示器利用所述不同位置的电容变化接收探测器，接收触控屏的电容变化的不同电阻电流函数波形，藉由所述触控芯片的判断所述改变电容值和基准电容值的差值超过基准电容值的预定范围时，通过所述触控芯片分析计算而实现精确的触摸定位，可以有效解决传统触摸屏功耗大、容易造成误判，且灵敏度不佳的缺点。
 附图说明
图1为本发明一种实施例之触控显示器的结构示意图。
图2为本发明一种实施例之触控显示器的局部剖面示意图。
图3为本发明一种实施例之触控显示器的功能示意图。
图4为本发明触控显示器触控方法之方块流程图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
本发明为一种触控显示器及触控显示器触控方法，能够提供简单的单点触控结构，根据触控屏的电容变化而实现精确的触摸定位。本发明的触控显示器包括显示面板和叠加在所术显示面板上的触控屏，所述显示面板可以是薄膜晶体管液晶显示面板或有机发光二级管显示面板等，其可应用于如医院、图书馆、银行或博物馆等提供查询功能的场合。
图1为本发明一种实施例之触控显示器的结构示意图。本发明的触控显示器1包括显示面板2及设于所述显示面板2上的触控屏3。所述触控屏3采用铟锡氧化物(indium tin oxide, ITO)溅射于所述显示面板2上，并形成有电容检测电路30。本发明触控屏3的电容触控技术是利用手指或触控笔(未图示)接触控屏3时产生电容变化的触控技术，其可包括自电容触控技术和互电容触控技术。所述电容检测电路30包括横向电极阵列301和纵向电极阵列302，所述横向电极阵列301和所述纵向电极阵列302在延伸方向相互垂直。
续请参阅图1，本案的显示面板2及触控屏3皆具有对应的矩形构型。特别说明的是，本发明的触控显示器1包括一触控芯片31、一信号发生器32，及三个电容变化接收探测器33，且所述触控芯片31连接所述信号发生器32及所述三个电容变化接收探测器33。利用所述信号发生器32、所述电容变化接收探测器33和所述触控芯片31的配合而达到精确触摸定位的效果。具体而言，所述显示面板2的外围的一个角落设有所述信号发生器32，而所述显示面板2的外围的另外三个角落分别设有所述电容变化接收探测器33。特别说明的是，本发明亦可仅设有单一个电容变化接收探测器，配合高运算能力的触控芯片同样可实现确触摸定位。
图2为本发明一种实施例之触控显示器的局部剖面示意图。于此较佳实施例中，所述信号发生器32及所述三个电容变化接收探测器33通过包含有导电粒子的异方性导电胶膜(anisotropic conductive film，ACF)4连接于所述触控屏3的电容检测电路30，使相互之间的电极导通。所述信号发生器32并连接所述电容检测电路30及所述触控芯片31，用于持续地发出包括一基准电容值的基准信号。每一所述电容变化接收探测器33连接所述电容检测电路30及所述触控芯片31，用于接收所述信号发生器32发出的基准信号，并根据所述触控屏3被触摸时，经由所述电容检测电路30的电容变化而产生检测信号。所述检测信号包含改变电容值及对应所述触控屏3的触摸位置的电阻电流函数波形。
续请参阅图1，所述触控显示器1还包括支撑所述显示面板2的机壳5。所述信号发生器32及所述三个电容变化接收探测器33位于所述显示面板2和所述机壳5之间，并利用组装整机而藉由所述机壳5的边框覆盖。
图3为本发明一种实施例之触控显示器的功能示意图。本发明触控屏3使用时，所述信号发生器32持续地发出基准信号，而所述三个电容变化接收探测器33同步接收所述信号发生器32发出的基准信号。当所述触控屏3被手指或触控笔接触触控屏3时，所述电容检测电路30的电容变化，而所述三个电容变化接收探测器33分别接收到对应所述触控屏3的触摸位置的电阻电流函数波形(RC函数波形)。由于每一所述电容变化接收探测器33与所述触控屏3的触摸位置的距离分别不同，因此所接收的电阻电流函数波形分别不同。此时，所述触控芯片31判断所述检测信号和所述基准信号的电容值的差值，且当所述差值超过所述基准电容值的一预定范围，所述触控芯片31依据所述三种电阻电流函数波形，通过触控芯片算法分析计算而可精确提供所述触控屏3的触摸定位。
如前所述，所述检测信号和所述基准信号的电容值的差值必须超过所述基准电容值的一预定范围，所述触控芯片31才会依据所述三种电阻电流函数波形，通过触控芯片算法分析计算所述触控屏3的触摸定位。亦即若所述触控屏3的电容变化是由于无触碰或表面存在灰尘、水滴而造成，但电容变化并未超出所述基准电容值的预定范围，则触控芯片31不会进行触控芯片算法分析计算。因此，触控屏3的触摸定位不会误判单点触摸为多点触摸而造成辨识错误。
本发明的触控显示器1利用所述不同位置的电容变化接收探测器33，接收触控屏3的电容变化的不同RC函数波形，藉由所述触控芯片31的判断所述改变电容值和基准电容值的差值超过基准电容值的预定范围时，通过所述触控芯片31分析计算而实现精确的触摸定位。由于本发明触控屏3藉由所述信号发生器和电容变化接收探测器的设置，不需配置复杂的电路结构，可以有效解决传统触摸屏功耗大、容易造成误判，且灵敏度不佳的缺点。
本发明另外提供一种用于所述触控显示器1的触控检测方法。图4为本发明触控显示器触控方法之方块流程图。本发明的触控显示器的触控检测方法，包括：
步骤S1：在所述触控屏形成电容检测电路；
步骤S2：提供一触控芯片。
步骤S3：在所述显示面板的外围设置一信号发生器，所述信号发生器连接所述触控芯片，并持续地发出包括一基准电容值的基准信号。
步骤S4：在所述显示面板的外围设置至少一电容变化接收探测器，其连接所述电容检测电路及所述触控芯片，所述至少一电容变化接收探测器用于接收所述信号发生器发出的基准信号；
步骤S5：所述至少一电容变化接收探测器根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及相对应所述触控屏的触摸位置的电阻电流函数波形。
步骤S6：所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
于一具体实施例中，在所述显示面板外围的三个角落分别设置所述电容变化接收探测，而所述显示面板的另一个角落设置有所述信号发生器，其中每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
于一具体实施例中，所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (14)

  1. 一种触控显示器，包括：
    显示面板；
    触控屏，设于所述显示面板上，所述触控屏包括电容检测电路；
    一信号发生器，设于所述显示面板的外围，并连接所述电容检测电路，所述信号发生器持续地发出包括一基准电容值的基准信号；
    至少一电容变化接收探测器，设于所述显示面板的外围，并连接所述电容检测电路，所述至少一电容变化接收探测器用于接收所述信号发生器发出的基准信号，并根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及对应所述触控屏的触摸位置的电阻电流函数波形；及
    触控芯片，连接所述信号发生器及至少一电容变化接收探测器，所述触控芯片用于依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
  2. 如权利要求1的触控显示器，其中所述触控显示器包括三个所述电容变化接收探测，分别设于所述显示面板的三个角落，所述信号发生器设于所述显示面板的另一个角落。
  3. 如权利要求2的触控显示器，其中每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
  4. 如权利要求1的触控显示器，其中所述触控显示器还包括支撑所述显示面板的机壳，所述信号发生器及所述至少一电容变化接收探测器位于所述显示面板和所述机壳之间。
  5. 如权利要求1的触控显示器，其中所述触控屏的电容检测电路包括横向电极阵列和纵向电极阵列，所述横向电极阵列和所述纵向电极阵列在延伸方向相互垂直。
  6. 如权利要求1的触控显示器，其中所述触控屏为铟锡氧化物所制，且所述信号发生器及所述至少一电容变化接收探测器通过异方性导电胶膜连接于所述电容检测电路。
  7. 如权利要求1的触控显示器，其中所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
  8. 一种触控显示器的触控检测方法，所述触控显示器包括显示面板及形成于所述显示面板上的触控屏，其中所述触控检测方法包括：
    在所述触控屏形成电容检测电路；
    提供一触控芯片；
    在所述显示面板的外围设置一信号发生器，所述信号发生器连接所述电容检测电路及所述触控芯片，并持续地发出包括一基准电容值的基准信号；
    在所述显示面板的外围设置至少一电容变化接收探测器，其连接所述电容检测电路及所述触控芯片，所述至少一电容变化接收探测器用于接收所述信号发生器发出的基准信号；
    所述至少一电容变化接收探测器根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及相对应所述触控屏的触摸位置的电阻电流函数波形；及
    所述触控芯依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
  9. 如权利要求8的触控检测方法，其中在所述显示面板外围的三个角落分别设置所述电容变化接收探测，而所述显示面板的另一个角落设置有所述信号发生器，其中每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
  10. 如权利要求8的触控检测方法，其中所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
  11. 一种触控显示器，包括：
    显示面板，具有矩形构型；
    触控屏，具有对应于显示面板的矩形构型，并设于所述显示面板上，所述触控屏包括电容检测电路；
    一信号发生器，设于所述显示面板的外围的一角落，并连接所述电容检测电路，所述信号发生器持续地发出包括一基准电容值的基准信号；
    三个电容变化接收探测器，设于所述显示面板的外围的三个角落，并连接所述电容检测电路，所述三个电容变化接收探测器用于接收所述信号发生器发出的基准信号，并根据所述触控屏被触摸时，经由所述电容检测电路的电容变化而产生检测信号，所述检测信号包含改变电容值及对应所述触控屏的触摸位置的电阻电流函数波形；及
    触控芯片，连接所述信号发生器及所述三个电容变化接收探测器，所述触控芯片用于依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
  12. 如权利要求11的触控显示器，其中每一所述电容变化接收探测器与所述触控屏的触摸位置的距离分别不同，所接收的电阻电流函数波形分别不同。
  13. 如权利要求11的触控显示器，其中所述触控屏的电容检测电路包括横向电极阵列和纵向电极阵列，所述横向电极阵列和所述纵向电极阵列在延伸方向相互垂直。
  14. 如权利要求11的触控显示器，其中所述触控芯片用于判断所述检测信号和所述基准信号的电容值的差值，且所述差值超过所述基准电容值的一预定范围，所述触控芯片依据所述电阻电流函数波形通过触控芯片算法分析计算而提供所述触控屏的触摸定位。
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