WO2015039363A1 - Unité d'induction de commande tactile multipoint surdimensionnée et procédé d'identification associé - Google Patents

Unité d'induction de commande tactile multipoint surdimensionnée et procédé d'identification associé Download PDF

Info

Publication number
WO2015039363A1
WO2015039363A1 PCT/CN2013/084548 CN2013084548W WO2015039363A1 WO 2015039363 A1 WO2015039363 A1 WO 2015039363A1 CN 2013084548 W CN2013084548 W CN 2013084548W WO 2015039363 A1 WO2015039363 A1 WO 2015039363A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch
ultra
sensing unit
signal
touch sensing
Prior art date
Application number
PCT/CN2013/084548
Other languages
English (en)
Chinese (zh)
Inventor
刘泽江
Original Assignee
苏州泛普纳米科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=49828621&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2015039363(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 苏州泛普纳米科技有限公司 filed Critical 苏州泛普纳米科技有限公司
Publication of WO2015039363A1 publication Critical patent/WO2015039363A1/fr

Links

Classifications

    • 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
    • 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
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger

Definitions

  • the present invention relates to the field of touch technologies, and in particular, to an oversized multi-touch sensing unit and a method for identifying the same.
  • BACKGROUND OF THE INVENTION With the increasing application of touch technology, its application range rapidly expands from the mass consumer electronics field such as mobile phones, PAD, GPS (global navigation system), MP3, etc. to smart homes (such as touch TV, touch refrigerator, touch Kitchen, touch coffee table, etc.), interactive digital signage, interactive exhibition display, interactive teaching and other fields.
  • the simple, convenient and user-friendly features of touch control have become the best interface for human-computer interaction and are rapidly spreading.
  • resistive touch sensing technology used in the early stage, although it has advantages in material and technology cost, it can also adapt to the touch technology integration requirements of small screen to medium and large size screens, but in fact resistive touch There are still inherent limitations in materials, structure and technology.
  • the resistive touch sensing film structure will cause the screen transmittance to be affected, and the mechanical structure of the film pressure sensing will cause the service life to be touched by a large amount. It is greatly affected, and it is easy to expose technical application defects on devices that frequently use the type.
  • the yield of the G/G touch scheme is actually It affects the cost of the end product, which affects the cost of the medium and large size touch screen using capacitive touch technology. Therefore, the capacitive touch technology solution encounters bottlenecks in the development of large-scale.
  • Touch applications originally used in electronic whiteboards and public displays are also used on some branded computers. For example, in an all-in-one product that exceeds 20 inches, an optical touch solution is used, and in a larger size design, an acoustic sensing touch solution is used. Regardless of whether it is an optical touch solution or an acoustic sensing touch solution, the accuracy of the tracking contact has a certain degree of error, mainly because the optical sensing type is susceptible to light, and the acoustic sensing type The waterproof capability is weak, which results in contact accuracy that is not as accurate as resistive or capacitive touch solutions. In addition, the touch-and-interface feedback program of the human-machine interface consumes a little longer than the resistance or capacitive touch.
  • the infrared touch screen is mounted on the front of the display with a circuit board outer frame.
  • the circuit board arranges the infrared transmitting tube and the infrared receiving tube on the four sides of the screen, and one-to-one correspondingly forms an infrared matrix which is horizontally and vertically crossed.
  • the finger blocks the two infrared rays passing through the position, so that the position of the touch point on the screen can be determined.
  • infrared touch screens are mostly used in large sizes, but they must be installed. On the outside of the display device, the appearance is poor. In outdoor applications, shortcomings such as anti-explosion, low water resistance and low service life also limit its application.
  • Known multi-touch panels are transparent substrates with an inductive sensing layer on the surface that are input and controlled by the user using a finger or pen tip to contact the generated signal.
  • the inside is a multi-touch sensing detection layer composed of two layers of high transparent glass/film package ITO (indium tin oxide).
  • ITO indium tin oxide
  • the user touches the sensing layer corresponding to the relevant position on the display screen by finger touch. Touch operation. Since the manufacturing process of the multi-touch sensing layer is complicated, and indium tin oxide is a scarce resource, the price is high and the supply is limited, and the multi-touch sensing layer is mostly applied to small and medium-sized screens.
  • the penetration capability of the above-mentioned small and medium-sized multi-touch sensing detection layer is limited to 3 mm. Due to the limitations of the process and technology, the surface touch is not possible, so the scope of application is very limited. On the other hand, in the medium and large size touch schemes, the touch accuracy is poor, there are delays and multi-point technical framework bottlenecks; these all restrict its widespread popularity.
  • an object of the present invention is to provide an ultra-large-sized multi-touch sensing unit and a recognition method thereof.
  • the object of the invention will be achieved by the following technical solutions:
  • An oversized multi-touch sensing unit comprises a grid electromagnetic induction layer, two layers of surface base layers embedded with the grid electromagnetic induction layer, and an inductive signal acquisition control connected to the grid electromagnetic induction layer
  • the integrated circuit, the sensing signal acquisition control integrated circuit is in communication with a computing control unit having a touch driver.
  • the grid electromagnetic induction layer comprises a disc-interlaced warp and weft network line which is wound by an ultra-fine wire and is respectively wound along an X-axis and a Y-axis.
  • the ultrafine wires are insulated from each other at the intersection.
  • the above-mentioned ultra-large-size multi-touch sensing unit wherein: the grid electromagnetic induction layer is embedded in two surface base layers by printing and/or silk screen printing and/or embossing pressing. .
  • the grid electromagnetic induction layer is two or more layers of the warp and weft network lines, and each of the layers of the warp and weft grid lines is coated with an insulating layer.
  • the ultra-fine wire comprises a nano wire and/or a metal wire.
  • the above-mentioned ultra-large-size multi-touch sensing unit wherein: the surface base layer is a flexible transparent film, a smooth wallpaper or carpet, a transparent glass or an acrylic plate; the surface base layer has a thickness of 10 mm or less; The surface base layer is a planar or curved structure.
  • the above-mentioned ultra-large-size multi-touch sensing unit wherein: the ultra-fine wires of the grid electromagnetic induction layer are collected and passed through a data stream output interface and a data stream input interface and the sensing signal acquisition control The integrated circuit is connected; the data stream input interface has independent X-axis and Y-axis ultra-fine wire signal output interfaces; the data stream output interface and the data stream input interface are flexible printed circuits, electrodes or pins.
  • the above-mentioned ultra-large-size multi-touch sensing unit wherein: the sensing signal acquisition control integrated circuit is an integrated circuit or integrated circuit and printing with multi-touch signal acquisition, processing and computer standard output interface functions. a circuit board combined with the circuit; the sensing signal acquisition control integrated circuit comprises:
  • the power conversion module converts the input voltage of the communication interface into a voltage required for the analog circuit and the digital circuit in the acquisition system, and isolates the input power source from the output power source to prevent the external power source from generating interference through the communication interface;
  • the transmitting circuit module is configured to generate an excitation signal required for capacitance detection, sequentially perform charge and discharge scanning on the X-axis and Y-axis intersections on the ultra-fine wire, and transmit the scanned matrix signal to the CPU processing module, in the CPU Under the control of the processing module, the matrix signals received by the different receiving channels are sent to the receiving circuit module in time sharing;
  • the receiving circuit module amplifies, rectifies, and filters the received matrix signal, and finally converts the matrix signal into a data signal, and sends it to the CPU processing module for processing;
  • a CPU processing module controlling the operation of the sensing signal acquisition control integrated circuit, and performing digital operation and processing on the final acquisition signal, and transmitting to the calculation control unit for multi-point identification processing.
  • the touch driver includes a DSP data processing program for performing multi-point recognition, and touch sensitivity of the touch sensing unit
  • the threshold is calibrated, and the ultra-fine wire is simultaneously detected for the degree of disconnection and electromagnetic interference.
  • the touch driving program is installed in an operating system of the computing control unit, or is installed in a separate hardware driver for installation and debugging.
  • the above-mentioned ultra-large-size multi-touch sensing unit wherein: the calculation control sheet
  • the operating system of the meta includes Linux, Windows or Android.
  • the method for identifying the super-large-size multi-touch sensing unit includes the following steps: Step 1: converting the input voltage of the communication interface to the analog signal and the digital circuit in the integrated circuit through the power conversion module The required voltage, and isolate the input power and output power to prevent external power supply from interfering through the communication interface;
  • Step 2 The excitation circuit sends an excitation signal, and sequentially performs charging and discharging scanning on the intersections of the ultra-fine wires on the X-axis and the Y-axis, and transmits the scanned matrix signals to the CPU processing module;
  • Step 3 under the control of the CPU processing module, time-sharing the matrix signals received by the different receiving channels to the receiving circuit module;
  • Step 4 The receiving circuit module amplifies, rectifies and filters the received matrix signal, and finally converts the matrix signal into a data signal, and sends it to the CPU processing module for processing to form a regular matrix data stream, which is transmitted to the calculation by the communication interface output.
  • the control unit has a multi-touch operation on the grid electromagnetic induction base layer, and the generated data stream information is input to the sensing signal acquisition control integrated circuit through the data stream output interface and the data stream input interface, and the sensing signal acquisition control integrated circuit pairs The data stream information is collected and processed to form an initial matrix signal output through the communication interface;
  • Step 6 The initial matrix signal is input through the input interface of the calculation control unit, and the data processing is performed by the DSP data processing program to obtain the actual position of the multi-touch, thereby identifying the multi-touch operation.
  • the method for identifying a super-large-scale multi-touch sensing unit is as follows, wherein: the DSP data processing program comprises a center of gravity algorithm.
  • a method for identifying a large-sized multi-touch sensing unit and an oversized touch sensing unit are provided, which realizes the application of multi-touch in the field of ultra-large touch technology;
  • the preparation method of the large-size multi-touch sensing unit adopts the flow-through operation, the raw material is easily obtained, and the cost is easy to control;
  • the software based on multi-point algorithm can be manually installed to the computing control unit, or integrated in a hardware driver, plug and play, can be adapted to a variety of operating systems, and has a humanized visual interface;
  • the preparation of the ultra-large-size multi-touch sensing unit is rich in raw materials and small in amount, which can replace the traditional ITO technology, avoid the use of scarce materials such as indium tin oxide, and has no pollution;
  • the ultra-large-size multi-touch sensing unit has a penetration capacity of more than 3mm and reaches 10mm, which enhances the anti-riot and waterproof capabilities, and expands its applications in military, industrial, commercial and other fields requiring anti-riot and waterproof functions;
  • FIG. 1 is a schematic structural diagram of a multi-touch sensing unit according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an inductive signal acquisition and control integrated circuit according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a system according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of detection distribution of a grid electromagnetic induction layer according to an embodiment of the present invention.
  • An ultra-large-size multi-touch sensing unit of the present embodiment includes a grid electromagnetic induction layer 3, and two layers of surface base layers embedded with the grid electromagnetic induction layer 3 (not shown)
  • the super-fine wires of the grid electromagnetic induction layer 3 are collected and connected to the inductive signal acquisition control integrated circuit 7 through the data stream output interface 4 and the data stream input interface 5, and the data stream input interface 5 has independent X-axis and Y-axis.
  • Ultra-fine wire signal output interface; data stream output interface 4 and data stream input interface 5 are flexible printed circuits, electrodes or pins.
  • the sensing signal acquisition control integrated circuit 7 is connected via a communication interface 6 to a computing control unit 9 having a touch driver.
  • the grid electromagnetic induction layer 3 comprises a disc-interlaced warp and weft network line which is formed by winding ultra-fine wires along the X-axis and the Y-axis respectively.
  • the ultra-fine wires are insulated from each other at the intersection, and the space surrounded by the intersections constitutes a space.
  • the grid electromagnetic induction layer is embedded in the two surface base layers by printing and/or silk screen printing and/or embossing, and the grid electromagnetic induction layer 3 is two or more layers.
  • each of the warp and weft grid lines is coated with an insulating layer, and the sensing units on each layer of the warp and weft grid lines are alternately arranged with each other in a regular honeycomb shape, a rectangular shape or a diamond shape, and the spacing between the sensing units is the same, or Not the same.
  • Ultrafine wires include nanowires and/or metal wires.
  • the surface base layer is a flexible transparent film, a smooth wallpaper or carpet, a transparent glass or an acrylic sheet; the surface of the surface layer has a thickness of 10 mm or less; and the surface base layer has a flat or curved structure.
  • the inductive signal acquisition control integrated circuit 7 is an integrated circuit or integrated circuit integrated circuit with a multi-touch signal acquisition, processing and computer standard output interface function; the inductive signal acquisition control integrated circuit comprises:
  • the power conversion module converts the input voltage of the communication interface 6 into a voltage required for the analog circuit and the digital circuit in the acquisition system, and isolates the input power source from the output power source to prevent the external power source from generating interference through the communication interface;
  • the transmitting circuit module is configured to generate an excitation signal required for capacitance detection, sequentially perform charge and discharge scanning on the X-axis and Y-axis intersections on the ultra-fine wire, and transmit the scanned matrix signal to the CPU processing module, in the CPU Under the control of the processing module, the matrix signals received by the different receiving channels are sent to the receiving circuit module in time sharing;
  • the receiving circuit module amplifies, rectifies, and filters the received matrix signal, and finally converts the matrix signal into a data signal, and sends it to the CPU processing module for processing;
  • the CPU processing module controls the operation of the sensing signal acquisition control integrated circuit, and finally collects the signals for digital operation and processing, and transmits the signals to the calculation control unit 9 for multi-point recognition processing.
  • the touch driver includes a DSP data processing program for performing multi-point recognition, and debugging calibration of the touch sensitivity and threshold of the touch sensing unit, and detecting whether the ultra-fine wire has wire breakage and electromagnetic interference. .
  • the touch driver is installed in the operating system of the computing control unit 9, or in a separate hardware installation that is free of installation and commissioning.
  • the operating system of the compute control unit 9 includes Linux, Windows or Android.
  • a method for identifying an oversized multi-touch sensing unit includes the following steps:
  • Step 1 The input voltage of the communication interface 6 is converted into a voltage required by the analog circuit and the digital circuit in the induction signal acquisition control integrated circuit through the power conversion module, and the input power source and the output power source are isolated to prevent the external power source from communicating.
  • the interface generates interference
  • Step 2 The excitation circuit sends an excitation signal, and sequentially performs charging and discharging scanning on the intersections of the ultra-fine wires on the X-axis and the Y-axis, respectively, and transmits the scanned matrix signals to the CPU processing module; As shown in FIG. 4, the transmission circuit module sends an excitation signal to XI, and sequentially scans the data signals of the intersection points of XI and Y1, the data signals of the intersection points of XI and Y2, and the data signals of the intersection points of XI and Y3 until scanning. Data signal to the intersection of XI and Yn, complete the whole Data acquisition on the XI axis.
  • Step 3 under the control of the CPU processing module, time-sharing the matrix signals received by the different receiving channels to the receiving circuit module;
  • Step 4 The receiving circuit module amplifies, rectifies and filters the received matrix signal, and finally converts the matrix signal into a data signal, and sends it to the CPU processing module for processing, forming a regular matrix data stream, and transmitting the output to the communication interface 6 to The computing control unit 9;
  • Step 5 the human hand 2 touches the multi-touch grid electromagnetic induction base layer 3 for multi-touch operation, and the generated related data stream information is input to the sensing through the data stream output interface 4 and the data stream input interface 5
  • the signal acquisition control integrated circuit 7, the sensing signal acquisition control integrated circuit 7 collects and processes the data stream information to form an initial matrix signal output through the communication interface 6; as shown in FIG.
  • a sensing area 1 is formed on the surface of the touch sensing unit (greater than or equal to the human finger and the touch sensing unit)
  • the intersection of the Y3 axis is M6.
  • the capacitance value of the six intersections of the M1, M2, M3, M4, M5, and M6 collected by the sensing signal acquisition control integrated circuit will be reduced.
  • M1 is assumed, and the capacitance value of the intersection is assumed to be reduced.
  • Nl the data information of this point can be obtained by the inversion algorithm as Vmax-Nl.
  • the data information of the other five intersections is obtained to form an initial matrix signal.
  • Step 6 The initial matrix signal is input through the input interface 8 of the calculation control unit 9, and the data processing is performed by the DSP data processing program (the DSP data processing program may be integrated with the calculation control unit 9 or may be separate from the calculation control unit 9).
  • the DSP data processing program performs an initial matrix signal, that is, data information Vmax-N1 of each intersection, to perform a center of gravity algorithm, and calculates actual position information M of the touch.
  • the touch driver converts the position information M into a signal that can be recognized by the calculation control unit 9 and transmits it to the calculation control unit 9, thereby obtaining a touch operation of the human hand touch at the point.
  • the human hand 10 When there are multiple hands on the touch operation, as shown in Figure 1, the human hand 10, the human hand 1 1. Repeat the above identification method, and is not limited by the number of touch points.
  • the present invention has various embodiments, and all technical solutions formed by equivalent transformation or equivalent transformation are within the scope of the present invention.

Landscapes

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

Abstract

La présente invention concerne une unité d'induction de commande tactile multipoint surdimensionnée et un procédé d'identification associé. L'unité d'induction de commande tactile multipoint surdimensionnée comprend, sur la base d'un procédé d'identification multipoint, une couche d'induction électromagnétique de grille, deux couches de substrats de surface entre lesquelles est incorporée la couche d'induction électromagnétique de grille, et un circuit intégré de commande de collecte de signal d'induction connecté de manière à pouvoir communiquer avec la couche d'induction électromagnétique de grille, le circuit intégré de commande de collecte de signal d'induction étant connecté de manière à pouvoir communiquer avec une unité de commande de calcul comportant un programme de pilotage de commande tactile. La présente invention permet d'obtenir l'application d'une commande tactile multipoint dans le domaine technique de la commande tactile surdimensionnée.
PCT/CN2013/084548 2013-09-18 2013-09-27 Unité d'induction de commande tactile multipoint surdimensionnée et procédé d'identification associé WO2015039363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310426937.0A CN103488340B (zh) 2013-09-18 2013-09-18 一种超大尺寸多点触控感应单元及其识别方法
CN201310426937.0 2013-09-18

Publications (1)

Publication Number Publication Date
WO2015039363A1 true WO2015039363A1 (fr) 2015-03-26

Family

ID=49828621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/084548 WO2015039363A1 (fr) 2013-09-18 2013-09-27 Unité d'induction de commande tactile multipoint surdimensionnée et procédé d'identification associé

Country Status (2)

Country Link
CN (1) CN103488340B (fr)
WO (1) WO2015039363A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107015702A (zh) * 2017-03-02 2017-08-04 南昌欧菲显示科技有限公司 导电模组及触摸屏

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101615096A (zh) * 2009-07-28 2009-12-30 苏州品美信息科技有限公司 成像触控膜及应用该成像触控膜的大屏幕互动传媒系统
CN102789334A (zh) * 2012-07-10 2012-11-21 苏州泛普纳米科技有限公司 一种纳米触控膜的生产方法
CN103246419A (zh) * 2013-04-28 2013-08-14 肖衣鉴 一种电容触摸屏及触摸屏的判断触摸点的方法
CN203149515U (zh) * 2013-02-05 2013-08-21 苏州泛普纳米科技有限公司 一种基于纳米触控膜的抗干扰触控系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2567694Y (zh) * 2002-09-16 2003-08-20 台均实业有限公司 内置导线网格电磁感应层的触摸控制显示屏
JP2004192093A (ja) * 2002-12-09 2004-07-08 Micro Gijutsu Kenkyusho:Kk 透明タッチパネル及びその製造方法
CN102023765B (zh) * 2009-09-14 2015-07-15 义隆电子股份有限公司 二维式架构的电容式触控板的定位方法
CN203502931U (zh) * 2013-09-18 2014-03-26 苏州泛普纳米科技有限公司 一种超大尺寸多点触控感应单元

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101615096A (zh) * 2009-07-28 2009-12-30 苏州品美信息科技有限公司 成像触控膜及应用该成像触控膜的大屏幕互动传媒系统
CN102789334A (zh) * 2012-07-10 2012-11-21 苏州泛普纳米科技有限公司 一种纳米触控膜的生产方法
CN203149515U (zh) * 2013-02-05 2013-08-21 苏州泛普纳米科技有限公司 一种基于纳米触控膜的抗干扰触控系统
CN103246419A (zh) * 2013-04-28 2013-08-14 肖衣鉴 一种电容触摸屏及触摸屏的判断触摸点的方法

Also Published As

Publication number Publication date
CN103488340B (zh) 2017-04-12
CN103488340A (zh) 2014-01-01

Similar Documents

Publication Publication Date Title
CN105224126B (zh) 触摸屏及其压力触控检测方法
CN202033733U (zh) 一种基于纳米触控膜技术的曲面屏
CN205230007U (zh) 触摸显示装置
CN105549251A (zh) 触控式液晶显示装置以及电子设备
CN205230006U (zh) 触摸显示装置
CN203276248U (zh) 能感应触摸位置与压力的触摸屏
TW201502932A (zh) 觸控式顯示裝置與其製造方法
CN103176647A (zh) 具有触摸传感器的显示设备及其触摸坐标数据发送方法
CN203759677U (zh) 一种触摸屏及显示装置
CN103941919A (zh) —种触摸事件识别模式
CN203858612U (zh) 一种透明压电片及触控面板
CN204904244U (zh) 触摸屏
CN203324953U (zh) 一种电容触控设备及便携式电子设备
TWI444881B (zh) A touch device and a control method thereof, and an electronic device having the touch device
CN106371685A (zh) 电子设备及其悬浮电容式触摸屏
CN105630240A (zh) 一种基于压电材料的多点触摸屏
CN102289320B (zh) 可自定义显示界面范围的多点触控展示方法
WO2015039363A1 (fr) Unité d'induction de commande tactile multipoint surdimensionnée et procédé d'identification associé
CN101847056B (zh) 共享输出接脚数的触控面板装置及其方法
CN203606780U (zh) 多点触摸和手势识别融合系统
CN202267935U (zh) 一种压敏式触摸屏
CN211628614U (zh) 一种透明触控led显示屏
CN106227376B (zh) 一种压力触控结构
CN203502931U (zh) 一种超大尺寸多点触控感应单元
CN111312098A (zh) 一种透明触控led显示屏

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13893833

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13893833

Country of ref document: EP

Kind code of ref document: A1