WO2020147387A1 - 一种触控感应单元、触控面板、触控显示装置及方法 - Google Patents

一种触控感应单元、触控面板、触控显示装置及方法 Download PDF

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Publication number
WO2020147387A1
WO2020147387A1 PCT/CN2019/116910 CN2019116910W WO2020147387A1 WO 2020147387 A1 WO2020147387 A1 WO 2020147387A1 CN 2019116910 W CN2019116910 W CN 2019116910W WO 2020147387 A1 WO2020147387 A1 WO 2020147387A1
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Prior art keywords
touch
antenna
touch sensing
antenna array
circuit
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PCT/CN2019/116910
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English (en)
French (fr)
Inventor
邹锋
谢磊
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北京汉王鹏泰科技股份有限公司
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Publication of WO2020147387A1 publication Critical patent/WO2020147387A1/zh

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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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers

Definitions

  • the invention relates to the technical field of touch display, in particular to a touch sensing unit, a touch panel, a touch display device and a method.
  • a general touch screen includes two parts: a touch sensing unit and a touch sensing control circuit.
  • the touch sensing unit is installed in front of the display screen to detect the user's touch position and transmit the received information to the touch sensing control circuit;
  • the main function of the touch sensing control circuit is to receive touch from the touch sensing unit Information, and convert it into contact coordinates, and then send it to the CPU, it can also receive the command sent by the CPU and execute it.
  • touch sensing units mainly include resistive touch sensing units and capacitive touch sensing units.
  • the resistive touch sensing units are not sensitive to touch and have low resolution for handwriting or pen writing.
  • capacitive touch sensing units can overcome the problem of low sensitivity of resistive touch sensing units, a denser array structure is required.
  • the array structure requires an array capable of outputting or inputting current signals. This leads to complex circuit structure and high cost.
  • the present invention provides a touch sensing unit, a touch panel, a touch display device and a method, to solve the complex structure and high cost of the touch sensing unit in the prior art The problem.
  • a touch sensing unit connected to a touch sensing control circuit, including:
  • the touch sensing antenna array is arranged on the antenna board, and includes a feeding channel and a plurality of antenna units extending from one side of the feeding channel, and the plurality of antenna units are along the length direction of the feeding channel They are arranged in parallel, and unidirectionally connected in parallel to the input end of the touch sensing control circuit.
  • the touch sensing antenna array includes: a first direction antenna array, and/or a second direction antenna array.
  • the touch sensing antenna array includes a first direction antenna array and a second direction antenna array
  • the first-directional antenna array and the second-directional antenna array are insulated from each other and are vertically stacked on the antenna board.
  • the base material of the antenna board is made of non-conductive material, and the first-directional antenna array and the second-directional antenna array are respectively arranged on the front and back surfaces of the antenna board; or,
  • the base material of the antenna board is composited by two single-sided conductive material layers, and the first-directional antenna array and the second-directional antenna array are respectively arranged on different single-sided conductive material layers.
  • the antenna unit includes: an electromagnetic induction antenna unit.
  • the width of any one of the antenna units is equal.
  • a lead wire is connected to the open end of each antenna unit
  • the lead wire is used to connect with the touch sensing control circuit.
  • a touch panel including:
  • the touch sensing control circuit includes a controller and a signal processing circuit connected to the controller, and further includes:
  • the first switch selection circuit has its input terminal connected to each antenna unit of the touch sensing antenna array in a one-to-one correspondence, its output terminal is connected to the signal processing circuit, and its control terminal is connected to the controller;
  • the second switch selection circuit its input terminal is connected to each antenna unit of the touch sensing antenna array in a one-to-one correspondence, its output terminal is grounded, and its control terminal is connected to the controller;
  • the first switch selection circuit and the second switch selection circuit are used to randomly select two antenna units from a plurality of antenna units connected to the same feed channel under the control of the controller, and respectively access the signal Process the circuit and ground to form an antenna loop.
  • the signal processing circuit includes:
  • Signal amplifier circuit filter circuit, signal detection circuit, frequency and phase detection circuit connected in sequence;
  • the input terminal of the signal amplifying circuit is connected to the output terminal of the first switch selection circuit
  • the output terminal of the frequency and phase detection circuit is connected to the controller.
  • a touch display device including:
  • a touch display method including:
  • Step S1 Turn on antenna units corresponding to different touch sensing areas to form different antenna loops
  • Step S2 Receive touch signals detected by different antenna loops
  • Step S3 Extract the characteristic value of the touch signal
  • Step S4 Determine the generating position of the touch signal according to the characteristic value.
  • the characteristic value includes at least one of the following items:
  • the touch signal includes an electromagnetic touch signal.
  • the multiple antenna units of the touch sensing unit are connected through the feed path at one end, and the other end is connected in parallel to the input end of the touch sensing control circuit in parallel, it is only necessary to connect any two parallel antenna units, and the two connected
  • the rectangular area between the antenna units is the touch sensing area, with simple structure, high touch efficiency, easy deployment and implementation, no complicated current input and output circuits, simple wiring, low cost, good user experience, and high satisfaction.
  • Fig. 1 is a schematic structural diagram of a touch sensing unit according to an exemplary embodiment
  • Fig. 2 is a schematic structural diagram of a touch sensing unit according to another exemplary embodiment
  • Fig. 3 is a schematic structural diagram of a touch sensing unit according to another exemplary embodiment
  • Fig. 4 is a schematic block diagram showing a touch sensing control circuit according to an exemplary embodiment
  • Fig. 5 is a flowchart showing a touch display method according to an exemplary embodiment.
  • Fig. 1 shows a touch sensing unit according to an exemplary embodiment, which is connected to a touch sensing control circuit. As shown in Fig. 1, the touch sensing unit includes:
  • Antenna board (not shown in the figure),
  • the touch sensing antenna array is arranged on the antenna board, and includes a feeding channel 100 and a plurality of antenna units 101 extending from one side of the feeding channel 100.
  • the channels 100 are arranged in parallel in the longitudinal direction, and are unidirectionally connected in parallel to the input end of the touch sensing control circuit.
  • the antenna unit 101 includes an electromagnetic induction antenna unit.
  • the touch sensing antenna array needs to deploy two layers of antenna arrays.
  • the upper and lower antenna arrays are separated by insulating materials.
  • the upper and lower antenna arrays When the upper and lower antenna arrays are After the antenna unit is energized, the upper and lower antenna arrays will form a capacitance where they cross each other.
  • the capacitance at the touch point When the user touches the screen, the capacitance at the touch point will change to generate a touch signal containing the position information of the touch point.
  • the control sensing control circuit analyzes the position coordinate information of the touch point according to the touch signal.
  • an electromagnetic induction antenna unit is used.
  • An electromagnetic touch device such as an electromagnetic pen or an electromagnetic rod, emits electromagnetic signals during movement.
  • the electromagnetic induction antenna unit judges the change in the magnetic field between the electromagnetic touch device and the electromagnetic touch device. Generates touch signals containing position information of touch points. Therefore, even if only one layer of antenna array is deployed in the touch sensing antenna array, electromagnetic signals can be sensed.
  • the circuit structure is simpler, the touch efficiency is higher, and the user experience is good.
  • a lead wire is connected to the open end of each antenna unit 101;
  • the lead wire is used to connect with the touch sensing control circuit.
  • the setting of the lead wires facilitates the connection of the antenna unit and the touch sensing control circuit, facilitates wiring and welding, and reduces the difficulty of installation.
  • the touch sensing antenna array includes: a first-directional antenna array 1 and/or a second-directional antenna array 2.
  • Figure 1 is a schematic structural diagram of the touch sensing antenna array as the first direction antenna array
  • Figure 2 is a schematic structural diagram of the touch sensing antenna array as the second direction antenna array
  • the touch sensing control circuit can obtain touch signals in two directions. Through the analysis of the touch signals in these two directions, The two-dimensional position coordinates of the touch point can be accurately analyzed. Compared with the solutions shown in Figs. 1 and 2, the solution shown in Fig. 3 can effectively increase the intensity of the sensing signal of the touch sensor unit and improve the position information of the touch point.
  • the accuracy of detection reduces the dependence on the signal strength of the electromagnetic touch device (for example, electromagnetic pen, electromagnetic rod, etc.), reduces the energy consumption of the electromagnetic touch device, and increases the service life of the electromagnetic touch device.
  • the touch sensing antenna array includes a first-directional antenna array 1 and a second-directional antenna array 2,
  • the first-directional antenna array 1 and the second-directional antenna array 2 are insulated from each other and are vertically stacked on the antenna board.
  • the antenna array in the first direction and the antenna array in the second direction are insulated from each other, so as to prevent the signal interference between the first direction antenna array and the second direction antenna array from affecting the touch point of the touch sensing control circuit.
  • the accuracy of location information judgment is a condition in which the antenna array in the first direction and the antenna array in the second direction is insulated from each other, so as to prevent the signal interference between the first direction antenna array and the second direction antenna array from affecting the touch point of the touch sensing control circuit. The accuracy of location information judgment.
  • the first-direction antenna array and the second-direction antenna array are vertically stacked on the antenna board in order to divide the touch sensing area more finely and orderly, so as to achieve precise positioning of touch point position information. Further improve the accuracy of judging the position of the touch point of the touch sensing control circuit.
  • the width of any one of the antenna units 101 is equal.
  • this embodiment limits the width of any of the antenna units to be equal, which can prevent misjudgment of the touch-sensing control circuit and improve the accuracy of the location information of the touch point.
  • the base material of the antenna board is made of non-conductive material, and the first-directional antenna array 1 and the second-directional antenna array 2 are respectively arranged on the front and back of the antenna board; or,
  • the base material of the antenna board is composed of two single-sided conductive material layers, and the first direction antenna array 1 and the second direction antenna array 2 are respectively arranged on different single-sided conductive material layers.
  • the antenna array in the first direction and the antenna array in the second direction are insulated from each other, so as to prevent the signal interference between the first direction antenna array and the second direction antenna array from affecting the touch point of the touch sensing control circuit.
  • the accuracy of location information judgment is a condition in which the antenna array in the first direction and the antenna array in the second direction is insulated from each other, so as to prevent the signal interference between the first direction antenna array and the second direction antenna array from affecting the touch point of the touch sensing control circuit. The accuracy of location information judgment.
  • PCB PCB, FPC, PI, PET
  • PET can be used as the base material of the antenna board.
  • the reason why the range on the base material is wide is because the technical solution provided in this embodiment, the antenna board The antenna unit does not have any vias, so there will be no manufacturing difficulties in the mass production process.
  • This embodiment provides different antenna board structures, which can be selected by users according to their needs. There are many user choices, wide application scenarios, good user experience, and high satisfaction.
  • the touch sensing control circuit includes a controller 201, and a signal processing circuit connected to the controller, and further includes:
  • the first switch selection circuit 202 has its input terminal connected to each antenna unit 101 of the touch sensing antenna array in a one-to-one correspondence, its output terminal is connected to the signal processing circuit, and its control terminal is connected to the controller 201;
  • the second switch selection circuit 203 has its input terminal connected to each antenna unit 101 of the touch sensing antenna array in a one-to-one correspondence, its output terminal is grounded, and its control terminal is connected to the controller 201;
  • the first switch selection circuit 202 and the second switch selection circuit 203 are used to randomly select two antenna units from a plurality of antenna units connected to the same feed channel under the control of the controller 201, and respectively connect them
  • the signal processing circuit and the ground form an antenna loop.
  • the settings of the first switch selection circuit and the second switch selection circuit enable the controller to switch on different antenna loops as needed, thereby forming different touch sensing areas on the touch panel.
  • the electrical signal of the control sensing area is measured, so as to gradually locate the touch area where the touch point is located.
  • the touch sensing control circuit provided in this embodiment has simple structure, easy deployment and implementation, high touch efficiency, and user experience Good and high satisfaction.
  • the signal processing circuit includes:
  • the signal amplification circuit 204, the filter circuit 205, the signal detection circuit 206, and the frequency and phase detection circuit 207 are connected in sequence;
  • the input terminal of the signal amplifying circuit 204 is connected to the output terminal of the first switch selection circuit 202;
  • the output terminal of the frequency and phase detection circuit 207 is connected to the controller 201.
  • the signal detection circuit is used to demodulate the received touch signal (electromagnetic signal) to obtain a low-frequency electrical signal; the frequency and phase detection circuit is used to detect the signal output by the signal detection circuit The frequency and phase of the low-frequency electrical signal are detected to extract characteristic information (including amplitude, phase, and frequency) of the touch signal, and the characteristic information is analyzed to analyze the position information of the touch point.
  • the signal processing circuit provided in this embodiment has a simple structure, easy deployment and implementation, high touch efficiency, good user experience, and high satisfaction.
  • Fig. 5 shows a touch display method according to an exemplary embodiment. Referring to Fig. 5, the method includes:
  • Step S1 Turn on antenna units corresponding to different touch sensing areas to form different antenna loops
  • Step S2 Receive touch signals detected by different antenna loops
  • Step S3 Extract the characteristic value of the touch signal
  • Step S4 Determine the generating position of the touch signal according to the characteristic value.
  • the characteristic value includes at least one of the following items:
  • the touch signal includes an electromagnetic touch signal.
  • the technical solution provided by this embodiment forms different antenna loops by connecting antenna units corresponding to different touch sensing areas, and determines the characteristic values of touch signals of different antenna loops by measuring
  • the location of the touch signal generation is simple, easy to deploy and implement, high touch judgment efficiency, good user experience, and high satisfaction.
  • Step S1 Connect the i-th antenna unit and the j-th antenna unit corresponding to the touch sensing area to form an antenna loop, where j>i, i, and j are positive integers;
  • Step S2 receiving the touch signal detected by the antenna loop
  • Step S3 Extract the amplitude V n of the touch signal, 1 ⁇ n ⁇ ji;
  • Step S5 Compare the magnitudes of V 1 ⁇ V ji to determine the position coordinates of the touch signal.
  • the first switch selection circuit in FIG. 4 selects S1, and the second switch selection circuit selects S4, so that a rectangular antenna loop is formed. The signal is strongest at the center of the antenna loop, and the farther from the center, the lower the signal strength.
  • the electromagnetic touch panel When an electromagnetic pen slides in the S1 and S4 areas, the electromagnetic touch panel generates a touch signal.
  • a voltage value V 1 can be measured by the touch sensing control circuit, and then another voltage can be measured by selecting S2 and S5 Value V 2 , and then measure a voltage value V 3 by selecting S3 and S6.
  • the precise position of the electromagnetic pen signal between S1 and S4 can be determined by comparing the magnitudes of V 1 , V 2 , and V 3. For example, V 1 is 10V, V 2 is 20V, and V 3 is 5V, and the touch signal can be determined The generating position is between S1 and S2.
  • the step S1 specifically includes:
  • the 2ith antenna unit and the 2jth antenna unit corresponding to the touch sensing area in the second direction are connected to form a second direction antenna loop, where j>i, i, and j are positive integers;
  • the step S3 specifically includes:
  • the step S5 specifically includes:
  • the second direction is perpendicular to the first direction.
  • the touch sensing control circuit can obtain touch signals in two directions. Through the analysis of the touch signals in these two directions, the two-dimensional position coordinates of the touch points can be accurately analyzed, which can effectively improve the touch Control the intensity of the induction signal of the induction unit, improve the detection accuracy of the position information of the touch point, reduce the dependence on the signal intensity of the electromagnetic touch device (for example, electromagnetic pen, electromagnetic rod, etc.), and reduce the energy consumption of the electromagnetic touch device , Improve the service life of electromagnetic touch devices.
  • the electromagnetic touch device for example, electromagnetic pen, electromagnetic rod, etc.
  • the antenna is divided into horizontal and vertical wiring.
  • the horizontal wiring is called the X-axis direction (referred to as X direction)
  • the vertical wiring is called the Y-axis direction (referred to as Y direction).
  • each part of the present invention may be implemented by hardware, software, firmware, or a combination thereof.
  • multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a logic gate circuit for implementing logic functions on data signals
  • PGA programmable gate array
  • FPGA field programmable gate array
  • a person of ordinary skill in the art can understand that all or part of the steps carried in the method of the foregoing embodiments can be implemented by a program instructing relevant hardware to complete.
  • the program can be stored in a computer-readable storage medium. When executed, it includes one of the steps of the method embodiment or a combination thereof.
  • each embodiment of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.
  • the storage medium mentioned above may be a read-only memory, a magnetic disk, or an optical disk.

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Abstract

本发明涉及一种触控感应单元、触控面板、触控显示装置及方法，该触控感应单元包括：天线板，触控感应天线阵列，设置在所述天线板上，包括馈电通道及从所述馈电通道一侧延伸出的多个天线单元，所述多个天线单元沿所述馈电通道的长度方向并行排列，且单向并联在所述触控感应控制电路的输入端。本发明提供的技术方案，由于触控感应单元的多个天线单元，一端通过馈电通路相连，另一端单向并联在触控感应控制电路的输入端，所以只需要将任意两个并联的天线单元连通，连通的两个天线单元之间的矩形区域即为触控感应区域，结构简单、触控效率高，部署实施容易，无需布设复杂的电流输入输出电路，布线简单、成本低，用户体验度好，满意度高。

Description

一种触控感应单元、触控面板、触控显示装置及方法 技术领域
本发明涉及触控显示技术领域，具体涉及一种触控感应单元、触控面板、触控显示装置及方法。
背景技术
在日常生活中，我们经常会接触到各种类型的触控屏幕，从个人消费端的手机、平板，到生活和工作的电脑，再到家用的电视机，以及各种应用场景的商用显示屏等。
一般的触控屏幕包含两个部分：触控感应单元和触控感应控制电路。触控感应单元是安装在显示器屏幕前面，用于检测用户触控位置，并把接收到信息传送到触控感应控制电路；触控感应控制电路的主要作用是从触控感应单元上接收触控信息，并将它转换成触点坐标，再传送给CPU，它同时能接收到CPU发来的命令并加以执行。
现有技术中，触控感应单元主要是有电阻式触控感应单元和电容式触控感应单元，其中，电阻式触控感应单元触控反应不灵敏，对手写或笔写的解析度低，逐渐被市场淘汰；电容式触控感应单元虽然能克服电阻式触控感应单元灵敏度不高的问题，但是需要布设较为密集的阵列结构，该阵列结构需要设置能够输出或输入电流信号的阵列，由此导致电路结构复杂，成本高。
发明内容
为至少在一定程度上克服相关技术中存在的问题，本发明提供一种触控感应单元、触控面板、触控显示装置及方法，以解决现有技术中触控感应单 元结构复杂，成本高的问题。
根据本发明实施例的第一方面，提供一种触控感应单元，与触控感应控制电路相连，包括：
天线板，
触控感应天线阵列，设置在所述天线板上，包括馈电通道及从所述馈电通道一侧延伸出的多个天线单元，所述多个天线单元沿所述馈电通道的长度方向并行排列，且单向并联在所述触控感应控制电路的输入端。
优选地，所述触控感应天线阵列，包括：第一方向天线阵列，和/或，第二方向天线阵列。
优选地，若所述触控感应天线阵列包括第一方向天线阵列和第二方向天线阵列，
所述第一方向天线阵列和第二方向天线阵列彼此绝缘，相互垂直叠设在所述天线板上。
优选地，所述天线板的基材由不导电材料制成，所述第一方向天线阵列和第二方向天线阵列分别设置在所述天线板的正反面上；或者，
所述天线板的基材由两个单面导电材料层复合而成，所述第一方向天线阵列和第二方向天线阵列分别设置在不同的单面导电材料层上。
优选地，所述天线单元包括：电磁感应天线单元。
优选地，任一所述天线单元的宽度相等。
优选地，每个天线单元的开口端连接有引出线；
所述引出线用于与所述触控感应控制电路相连。
根据本发明实施例的第二方面，提供一种触控面板，包括：
上述的触控感应单元及触控感应控制电路。
优选地，所述触控感应控制电路，包括：控制器，及与所述控制器相连的信号处理电路，还包括：
第一开关选择电路，其输入端与所述触控感应天线阵列的各天线单元一 一对应相连，其输出端与所述信号处理电路相连，其控制端与所述控制器相连；
第二开关选择电路，其输入端与所述触控感应天线阵列的各天线单元一一对应相连，其输出端接地，其控制端与所述控制器相连；
所述第一开关选择电路及第二开关选择电路，用于在所述控制器的控制下从与同一馈电通道相连的多个天线单元中任意选取两个天线单元，分别接入所述信号处理电路和地，以形成天线回路。
优选地，所述信号处理电路，包括：
依次相连的信号放大电路、滤波电路、信号检波电路、频率相位检测电路；
所述信号放大电路的输入端与所述第一开关选择电路的输出端相连；
所述频率相位检测电路的输出端与所述控制器相连。
根据本发明实施例的第三方面，提供一种触控显示装置，包括：
上述的触控面板。
根据本发明实施例的第四方面，提供一种触控显示方法，包括：
步骤S1、接通不同触控感应区域所对应的天线单元，以形成不同的天线回路；
步骤S2、接收不同的天线回路所检测到的触控信号；
步骤S3、提取所述触控信号的特征值；
步骤S4、根据所述特征值，确定触控信号的生成位置。
优选地，所述特征值包括以下项中的至少一项：
幅值、相位、频率。
优选地，所述触控信号，包括：电磁触控信号。
本发明的实施例提供的技术方案可以包括以下有益效果：
由于触控感应单元的多个天线单元，一端通过馈电通路相连，另一端单向并联在触控感应控制电路的输入端，所以只需要将任意两个并联的天线单 元连通，连通的两个天线单元之间的矩形区域即为触控感应区域，结构简单、触控效率高，部署实施容易，无需布设复杂的电流输入输出电路，布线简单、成本低，用户体验度好，满意度高。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本发明。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是根据一示例性实施例示出的触控感应单元的结构示意图；
图2是根据另一示例性实施例示出的触控感应单元的结构示意图；
图3是根据另一示例性实施例示出的触控感应单元的结构示意图；
图4是根据一示例性实施例示出的触控感应控制电路的示意框图；
图5是根据一示例性实施例示出的一种触控显示方法的流程图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
图1是根据一示例性实施例示出的一种触控感应单元，与触控感应控制电路相连，如图1所示，该触控感应单元包括：
天线板(附图中未示出)，
触控感应天线阵列，设置在所述天线板上，包括馈电通道100及从所述馈电通道100一侧延伸出的多个天线单元101，所述多个天线单元101沿所述馈电通道100的长度方向并行排列，且单向并联在所述触控感应控制电路的 输入端。
可以理解的是，本实施例提供的技术方案，由于触控感应单元的多个天线单元，一端通过馈电通路相连，另一端单向并联在触控感应控制电路的输入端，所以只需要将任意两个并联的天线单元连通，连通的两个天线单元之间的矩形区域即为触控感应区域，结构简单、触控效率高，部署实施容易，无需布设复杂的电流输入输出电路，布线简单、成本低，用户体验度好，满意度高。
优选地，所述天线单元101包括：电磁感应天线单元。
可以理解的是，若天线单元采用传统的电容式感应天线单元，则触控感应天线阵列需要部署两层天线阵列，上下两层天线阵列中间用绝缘材料隔开，当上下两层天线阵列中的天线单元通电后，上下两层天线阵列相互交叉的地方会形成电容，当用户触控屏幕的时候，触控点处的电容会发生改变，从而生成包含触控点位置信息的触控信号，触控感应控制电路根据触控信号解析出触控点的位置坐标信息。
而本实施例采用电磁感应天线单元，电磁触控装置，例如，电磁笔、电磁杆在移动的过程中会发射电磁信号，电磁感应天线单元通过判断与所述电磁触控装置之间磁场的变化生成包含触控点位置信息的触控信号，因此触控感应天线阵列即使只布设一层天线阵列，也是可以感应到电磁信号，电路结构更简单、触控效率更高，用户体验度好。
优选地，每个天线单元101的开口端连接有引出线；
所述引出线用于与所述触控感应控制电路相连。
可以理解的是，引出线的设置，便于天线单元与触控感应控制电路相连，便于接线和焊接，降低安装难度。
优选地，所述触控感应天线阵列，包括：第一方向天线阵列1，和/或，第二方向天线阵列2。
参见图1、图2和图3，图1是触控感应天线阵列为第一方向天线阵列的 结构示意图；图2是触控感应天线阵列为第二方向天线阵列的结构示意图；图3是触控感应天线阵列包括第一方向天线阵列和第二方向天线阵列的结构示意图。
可以理解的是，具体实践中，若采用图3所示的触控感应天线阵列，触控感应控制电路能够得到两个方向的触控信号，通过对这两个方向的触控信号的分析，可以精准解析出触控点的二维位置坐标，相比图1和图2所示的方案，图3所示的方案，可以有效提高触控感应单元感应信号的强度，提高触控点位置信息的检测精准度，降低对电磁触控装置(例如，电磁笔、电磁杆等)发射信号强度的依赖性，减少电磁触控装置的能量消耗，提高电磁触控装置的使用寿命。
可以理解的是，具体实践中，若采用图1和图2所示的触控感应天线阵列，相比图3所示的方案，能够在量产过程中减少制造工序、提高生产效率，节省人力、降低制造成本。
可以理解的是，本实施例提供的技术方案，提供了多种触控感应天线阵列结构，用户选择多，可以满足多种使用需求，用户体验度好，满意度高。
优选地，若所述触控感应天线阵列包括第一方向天线阵列1和第二方向天线阵列2，
所述第一方向天线阵列1和第二方向天线阵列2彼此绝缘，相互垂直叠设在所述天线板上。
可以理解的是，所述第一方向天线阵列和第二方向天线阵列彼此绝缘，是为了防止第一方向天线阵列和第二方向天线阵列之间信号相互干扰，影响触控感应控制电路触控点位置信息的判断精准度。
所述第一方向天线阵列和第二方向天线阵列相互垂直叠设在所述天线板上，是为了更精细更规整地将触控感应区域进行划分，从而实现触控点位置信息的精准定位，进一步提高触控感应控制电路触控点位置的判断精准度。
优选地，任一所述天线单元101的宽度相等。
可以理解的是，若所述天线单元的宽度不相等，会导致即使当前触控感应区没有被触控，当前触控感应区所对应的天线回路的电信号也会和其他触控感应区的电信号不同，导致触控感应控制电路出现错误判断。因此，本实施例限定任一所述天线单元的宽度相等，可以防止触控感应控制电路出现误判，提高触控点位置信息定位的精准度。
优选地，所述天线板的基材由不导电材料制成，所述第一方向天线阵列1和第二方向天线阵列2分别设置在所述天线板的正反面上；或者，
所述天线板的基材由两个单面导电材料层复合而成，所述第一方向天线阵列1和第二方向天线阵列2分别设置在不同的单面导电材料层上。
可以理解的是，所述第一方向天线阵列和第二方向天线阵列彼此绝缘，是为了防止第一方向天线阵列和第二方向天线阵列之间信号相互干扰，影响触控感应控制电路触控点位置信息的判断精准度。
在基材用料上无论厚薄，PCB、FPC、PI、PET均可做为天线板的基材使用，之所以在基材上的范围广泛，是因为本实施例提供的技术方案，天线板上的天线单元是没有任何过孔的，在量产过程中不会产生制程难点。
本实施例给出了不同的天线板结构，可以供用户根据需要进行选择，用户选择多、适用场景广，用户体验度好、满意度高。
根据一示例性实施例示出的一种触控面板，包括：
上述的触控感应单元及触控感应控制电路。
可以理解的是，本实施例提供的技术方案，由于触控感应单元的多个天线单元，一端通过馈电通路相连，另一端单向并联在触控感应控制电路的输入端，所以只需要将任意两个并联的天线单元连通，连通的两个天线单元之间的矩形区域即为触控感应区域，结构简单、触控效率高，部署实施容易，无需布设复杂的电流输入输出电路，布线简单、成本低，用户体验度好，满意度高。
参见图4，优选地，所述触控感应控制电路，包括：控制器201，及与所 述控制器相连的信号处理电路，还包括：
第一开关选择电路202，其输入端与所述触控感应天线阵列的各天线单元101一一对应相连，其输出端与所述信号处理电路相连，其控制端与所述控制器201相连；
第二开关选择电路203，其输入端与所述触控感应天线阵列的各天线单元101一一对应相连，其输出端接地，其控制端与所述控制器201相连；
所述第一开关选择电路202及第二开关选择电路203，用于在所述控制器201的控制下从与同一馈电通道相连的多个天线单元中任意选取两个天线单元，分别接入所述信号处理电路和地，以形成天线回路。
可以理解的是，第一开关选择电路和第二开关选择电路的设置，使得控制器可以根据需要接通不同的天线回路，从而在触控面板上形成不同的触控感应区域，通过对这些触控感应区域的电信号进行测量，从而逐步定位出触控点所在的触控区域，本实施例提供的这种触控感应控制电路，结构简单、部署实施容易，触控效率高，用户体验度好、满意度高。
优选地，所述信号处理电路，包括：
依次相连的信号放大电路204、滤波电路205、信号检波电路206、频率相位检测电路207；
所述信号放大电路204的输入端与所述第一开关选择电路202的输出端相连；
所述频率相位检测电路207的输出端与所述控制器201相连。
可以理解的是，所述信号检波电路用于对接收到的触控信号(电磁信号)进行解调，从而得到低频的电信号；所述频率相位检测电路用于对所述信号检波电路输出的低频电信号进行频率和相位检测，从而提取出触控信号的特征信息(包括幅值、相位和频率)，并对所述特征信息进行分析，从而解析出触控点的位置信息。
可以理解的是，本实施例提供的这种信号处理电路，结构简单、部署实 施容易，触控效率高，用户体验度好、满意度高。
根据一示例性实施例示出的一种触控显示装置，包括：
上述的触控面板。
可以理解的是，本实施例提供的技术方案，由于触控感应单元的多个天线单元，一端通过馈电通路相连，另一端单向并联在触控感应控制电路的输入端，所以只需要将任意两个并联的天线单元连通，连通的两个天线单元之间的矩形区域即为触控感应区域，结构简单、触控效率高，部署实施容易，无需布设复杂的电流输入输出电路，布线简单、成本低，用户体验度好，满意度高。
图5是根据一示例性实施例示出的一种触控显示方法，参见图5，该方法包括：
步骤S1、接通不同触控感应区域所对应的天线单元，以形成不同的天线回路；
步骤S2、接收不同的天线回路所检测到的触控信号；
步骤S3、提取所述触控信号的特征值；
步骤S4、根据所述特征值，确定触控信号的生成位置。
优选地，所述特征值包括以下项中的至少一项：
幅值、相位、频率。
优选地，所述触控信号，包括：电磁触控信号。
可以理解的是，本实施例提供的技术方案，通过接通不同触控感应区域所对应的天线单元，从而形成不同的天线回路，通过测量不同的天线回路的触控信号的特征值，从而确定出触控信号的生成位置，方法简单、部署实施容易，触控判断效率高，用户体验度好、满意度高。
为了便于理解，以所述特征值为幅值为例，对所述步骤S1～S4具体解释说明如下：
步骤S1、接通触控感应区域所对应的第i天线单元和第j天线单元，形成 天线回路，其中，j＞i，i，j为正整数；
步骤S2、接收所述天线回路所检测到的触控信号；
步骤S3、提取所述触控信号的幅值V n，1≤n≤j-i；
步骤S4、将第i+1天线单元和第j+1天线单元接通，形成天线回路，返回步骤S2；当i＝j-2时，跳转到步骤S5；
步骤S5、比较V 1～V j-i的大小，确定触控信号的位置坐标。
再例如，以所述触控信号为电磁触控信号为例，图4中的第一开关选择电路选择S1，第二开关选择电路选择S4，这样就形成矩形的天线回路，电磁笔在矩形的天线回路中心位置处信号最强，距离中心位置处越远，信号强度越小。当有电磁笔在S1和S4区域内滑动时，电磁触控面板就生成触控信号，通过触控感应控制电路可以测得一个电压值V 1，然后再通过选择S2和S5再测得一个电压值V 2，然后再通过选择S3和S6再测得一个电压值V 3。通过对比V 1、V 2、V 3的大小可以确定电磁笔信号在S1和S4之间的精确位置，例如，V 1为10V，V 2为20V，V 3为5V，可以确定触控信号的生成位置在S1和S2之间。
优选地，所述步骤S1具体包括：
接通触控感应区域在第一方向所对应的第1i天线单元和第1j天线单元，形成第一方向天线回路；
接通触控感应区域在第二方向所对应的第2i天线单元和第2j天线单元，形成第二方向天线回路，其中，j＞i，i，j为正整数；
所述步骤S3具体包括：
分别提取第一方向天线回路接收到的触控信号的幅值V 1n和第二方向天线回路接收到的触控信号的幅值V 2n；
所述步骤S5具体包括：
比较V 11～V 1(j-i)的大小，确定触控信号在第二方向的位置坐标；
比较V 21～V 2(j-i)的大小，确定触控信号在第一方向的位置坐标；
其中，第二方向与第一方向垂直。
可以理解的是，触控感应控制电路能够得到两个方向的触控信号，通过对这两个方向的触控信号的分析，可以精准解析出触控点的二维位置坐标，可以有效提高触控感应单元感应信号的强度，提高触控点位置信息的检测精准度，降低对电磁触控装置(例如，电磁笔、电磁杆等)发射信号强度的依赖性，减少电磁触控装置的能量消耗，提高电磁触控装置的使用寿命。
需要补充说明的是，天线分为横向走线和竖向走线，一般将横向走线叫做X轴方向(简称X方向)，把竖向走线叫做Y轴方向(简称Y方向)。若电磁笔在触控感应区X方向移动的时候，接收到的信号强度不变化，在同样的区域内沿Y方向移动的时候，信号幅度就会发生变化，可以通过测量X方向的信号来确定电磁笔在Y方向的坐标，同理，通过测量Y方向的信号大小来确定X方向的坐标，形成一个二维坐标信息。
可以理解的是，上述各实施例中相同或相似部分可以相互参考，在一些实施例中未详细说明的内容可以参见其他实施例中相同或相似的内容。
需要说明的是，在本发明的描述中，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本发明的描述中，除非另有说明，“多个”的含义是指至少两个。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本发明的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本发明的实施例所属技术领域的技术人员所理解。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另 一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。
此外，在本发明各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。
上述提到的存储介质可以是只读存储器，磁盘或光盘等。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (14)

  1. 一种触控感应单元，与触控感应控制电路相连，其特征在于，包括：
    天线板，
    触控感应天线阵列，设置在所述天线板上，包括馈电通道及从所述馈电通道一侧延伸出的多个天线单元，所述多个天线单元沿所述馈电通道的长度方向并行排列，且单向并联在所述触控感应控制电路的输入端。
  2. 根据权利要求1所述的触控感应单元，其特征在于，
    所述触控感应天线阵列，包括：第一方向天线阵列，和/或，第二方向天线阵列。
  3. 根据权利要求2所述的触控感应单元，其特征在于，若所述触控感应天线阵列包括第一方向天线阵列和第二方向天线阵列，
    所述第一方向天线阵列和第二方向天线阵列彼此绝缘，相互垂直叠设在所述天线板上。
  4. 根据权利要求3所述的触控感应单元，其特征在于，
    所述天线板的基材由不导电材料制成，所述第一方向天线阵列和第二方向天线阵列分别设置在所述天线板的正反面上；或者，
    所述天线板的基材由两个单面导电材料层复合而成，所述第一方向天线阵列和第二方向天线阵列分别设置在不同的单面导电材料层上。
  5. 根据权利要求1所述的触控感应单元，其特征在于，
    所述天线单元包括：电磁感应天线单元。
  6. 根据权利要求1所述的触控感应单元，其特征在于，
    任一所述天线单元的宽度相等。
  7. 根据权利要求1～6所述的触控感应单元，其特征在于，
    每个天线单元的开口端连接有引出线；
    所述引出线用于与所述触控感应控制电路相连。
  8. 一种触控面板，其特征在于，包括：
    权利要求1～7任一项所述的触控感应单元及触控感应控制电路。
  9. 根据权利要求8所述的触控面板，其特征在于，所述触控感应控制电路，包括：控制器，及与所述控制器相连的信号处理电路，还包括：
    第一开关选择电路，其输入端与所述触控感应天线阵列的各天线单元一一对应相连，其输出端与所述信号处理电路相连，其控制端与所述控制器相连；
    第二开关选择电路，其输入端与所述触控感应天线阵列的各天线单元一一对应相连，其输出端接地，其控制端与所述控制器相连；
    所述第一开关选择电路及第二开关选择电路，用于在所述控制器的控制下从与同一馈电通道相连的多个天线单元中任意选取两个天线单元，分别接入所述信号处理电路和地，以形成天线回路。
  10. 根据权利要求9所述的触控面板，其特征在于，所述信号处理电路，包括：
    依次相连的信号放大电路、滤波电路、信号检波电路、频率相位检测电路；
    所述信号放大电路的输入端与所述第一开关选择电路的输出端相连；
    所述频率相位检测电路的输出端与所述控制器相连。
  11. 一种触控显示装置，其特征在于，包括：
    权利要求8～10任一项所述的触控面板。
  12. 一种触控显示方法，其特征在于，包括：
    步骤S1、接通不同触控感应区域所对应的天线单元，以形成不同的天线回路；
    步骤S2、接收不同的天线回路所检测到的触控信号；
    步骤S3、提取所述触控信号的特征值；
    步骤S4、根据所述特征值，确定触控信号的生成位置。
  13. 根据权利要求12所述的方法，其特征在于，所述特征值包括以下项中的至少一项：
    幅值、相位、频率。
  14. 根据权利要求12或13所述的方法，其特征在于，
    所述触控信号，包括：电磁触控信号。
PCT/CN2019/116910 2019-01-16 2019-11-09 一种触控感应单元、触控面板、触控显示装置及方法 WO2020147387A1 (zh)

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