WO2015154361A1 - 触摸屏及显示装置 - Google Patents

触摸屏及显示装置 Download PDF

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Publication number
WO2015154361A1
WO2015154361A1 PCT/CN2014/084523 CN2014084523W WO2015154361A1 WO 2015154361 A1 WO2015154361 A1 WO 2015154361A1 CN 2014084523 W CN2014084523 W CN 2014084523W WO 2015154361 A1 WO2015154361 A1 WO 2015154361A1
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WO
WIPO (PCT)
Prior art keywords
touch
electrode
electromagnetic
capacitive
capacitive touch
Prior art date
Application number
PCT/CN2014/084523
Other languages
English (en)
French (fr)
Inventor
王新星
Original Assignee
京东方科技集团股份有限公司
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
Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/435,566 priority Critical patent/US9639220B2/en
Publication of WO2015154361A1 publication Critical patent/WO2015154361A1/zh

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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
    • 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
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • 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
    • 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

Definitions

  • Embodiments of the present invention relate to a touch screen and a display device. Background technique
  • the Touch Screen Panel With the rapid development of display technology, the Touch Screen Panel has gradually spread throughout people's lives.
  • the touch screen can be divided into: resistive, capacitive, infrared, and surface acoustic wave, electromagnetic, and vibration induction.
  • capacitive touch screens With its unique touch principle, capacitive touch screens have received industry attention due to their high sensitivity, long life and high light transmittance.
  • capacitive touch screens generally employ a front-mounted type in which a capacitive touch driving electrode and a capacitive touch sensing electrode are provided with mutually insulated transparent conductive materials.
  • a coupling capacitance is formed between the finger and the capacitive touch driving electrode and the capacitive touch sensing electrode in the touch screen, so that the capacitance near the touch point changes, and the capacitance changes in the capacitive touch driving electrode.
  • the capacitive touch sensing electrode causes an induced current flowing through the touch point. The position of the touch point can be accurately calculated by correlation calculation.
  • Electromagnetic touch screens are widely used in many high-end CAD (Computer Aided Design) systems, such as AutoCAD, because they can realize the original handwriting.
  • the electromagnetic touch screen generally uses a back-mounted electromagnetic antenna board, and the electromagnetic touch antenna board is composed of horizontally and vertically staggered metal wires.
  • 1 is a schematic structural view of an electromagnetic touch antenna board. The X-direction metal wires and the Y-direction metal wires are perpendicular to each other and insulated by an insulating layer therebetween.
  • Figure 2 shows the schematic diagram of the electromagnetic touch.
  • the two metal wires that is, the touch electrodes Y1 and Y2 are connected to each other by a touch electrode in the X direction, which is equivalent to the resistance Rx; when the electromagnetic pen is close to the surface of the module and slides, the electromagnetic wave cuts the wire to generate an induced electromotive force, and the closer The position of the electromagnetic pen produces a stronger induced electromotive force.
  • the magnitude of the potential vector received by the touch electrodes Y1 and Y2 is equivalent to the position of the sliding resistance arrow between the resistors, thereby determining the magnitude of the induced electromotive force on the electrode in the Y direction, and finally determining the position of the Y electrode;
  • the electrodes are identical to their principles.
  • the two sliding resistors slide synchronously in the same direction or in the opposite direction.
  • the coordinate position of the nib in the plane can be calculated.
  • the front end of the electromagnetic pen is provided with a pressure sensing device.
  • the thickness of the handwriting can be determined by the strength of the pressing, which is why the electromagnetic touch antenna board can realize the handwriting of the original handwriting.
  • At least one embodiment of the present invention provides a touch screen and a display device for reducing the thickness of the entire touch screen under the premise of ensuring the electromagnetic touch function and the capacitive touch function.
  • a touch screen provided by at least one embodiment of the present invention includes: a capacitive touch sensing electrode; a capacitive touch driving electrode insulated from and intersecting with the capacitive touch sensing electrode; and the capacitive touch sensing electrode a first electromagnetic touch electrode that is insulated and disposed in the same layer; a second electromagnetic touch that is insulated from the capacitive touch driving electrode and is disposed in the same layer and is insulated from and intersects with the first electromagnetic touch electrode electrode.
  • a display device includes a display device and any of the above-mentioned touch screens provided by the embodiments of the present invention disposed above the display device.
  • 1 is a schematic structural view of an electromagnetic touch antenna board
  • FIG. 3 is a schematic structural diagram of a touch screen according to an embodiment of the present disclosure.
  • Figure 4a is a schematic cross-sectional view of Figure 3 taken along the line A-A';
  • Figure 4b is a schematic cross-sectional view of Figure 3 taken along line BB';
  • FIG. 5 is a schematic structural diagram of a capacitive touch sensing electrode and a first electromagnetic touch electrode disposed in the same layer according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a capacitive touch driving electrode and a second electromagnetic touch electrode disposed in the same layer according to an embodiment of the present disclosure
  • FIG. 6 is a second schematic structural diagram of a touch screen according to an embodiment of the present disclosure
  • FIG. 7 is a timing diagram of a touch function implemented by a touch screen according to an embodiment of the present invention. detailed description
  • a touch screen provided by at least one embodiment of the present invention includes: a capacitive touch sensing electrode 110, and a capacitive touch driving electrode 120 that is insulated from and intersects with the capacitive touch sensing electrode 110;
  • the first electromagnetic touch electrode 210 is insulated from the capacitive touch sensing electrode 110 and is insulated from the first electromagnetic touch electrode 210.
  • a second electromagnetic touch electrode 220 that is disposed opposite to each other.
  • the first electromagnetic touch electrode and the capacitive touch sensing electrode are disposed in the same layer, and the second electromagnetic touch electrode and the capacitive touch driving electrode are disposed in the same layer, so that electromagnetic protection can be ensured.
  • the touch effect and the capacitive touch effect simultaneously simplify the film layer of the touch screen to the utmost, thereby reducing the thickness of the entire touch screen.
  • the first electromagnetic touch electrode and the capacitive touch sensing electrode can be fabricated by one patterning process, and the second electromagnetic touch electrode and the capacitive touch driving electrode can be fabricated by one patterning process, thereby maximizing
  • the simplified preparation process can save the production cost of the entire touch screen.
  • the touch module in order to increase the transmittance of the touch module as much as possible, such as a capacitive touch sensing electrode, a capacitive touch driving electrode, a first electromagnetic touch electrode, and a second electromagnetic touch electrode.
  • the materials may all be transparent conductive oxides, for example, indium tin oxide (ITO) materials.
  • the touch screen in order to further increase the transmittance of the touch screen, for example, electricity
  • the capacitive touch sensing electrode, the capacitive touch driving electrode, the first electromagnetic touch electrode and the second electromagnetic touch electrode are disposed in the same layer.
  • the touch screen further includes: bridging adjacent capacitive touch sensing electrodes and bridging layers of adjacent first electromagnetic touch electrodes, or bridging adjacent capacitive touch driving electrodes and bridging adjacent second electromagnetic contacts
  • the touch screen can include three main film layers, that is, a capacitive touch driving electrode disposed on the same layer, a capacitive touch sensing electrode, and a first a transparent conductive oxide layer composed of an electromagnetic touch electrode and a second electromagnetic touch electrode, bridging adjacent capacitive touch sensing electrodes and bridge layers of adjacent first electromagnetic touch electrodes, or bridging adjacent The capacitive touch driving electrode and the metal layer bridging the bridge layer of the adjacent second electromagnetic touch electrode, and the insulating layer between the transparent conductive oxide layer and the metal layer.
  • there is generally a passivation layer that protects the touch screen from the external environment.
  • the touch screen of the above structure has a small number of layers, and can achieve the electromagnetic touch function and the capacitive touch function, and can minimize the thickness of the finished product.
  • the first electromagnetic touch electrode 210 and the second electromagnetic touch electrode 220 may also be disposed on different sides, that is, in the same layer.
  • the first electromagnetic touch electrode 210 and the capacitive touch sensing electrode 110 are located at different layers from the second electromagnetic touch electrode 220 and the capacitive touch driving electrode 120 disposed in the same layer.
  • the touch screen further includes: The insulating layer 300 between the capacitive touch sensing electrode 110 and the first electromagnetic touch electrode 210 and the capacitive touch driving electrode 120 and the second electromagnetic touch electrode 220 disposed in the same layer.
  • the touch screen can also include three main film layers, that is, the capacitive touch sensing electrodes and the first electromagnetic touch electrodes disposed in the same layer. a first transparent conductive oxide layer, a second transparent conductive oxide layer composed of a capacitive touch driving electrode and a second electromagnetic touch electrode disposed in the same layer, and a first transparent conductive oxide layer and a second transparent layer An insulating layer between the conductive oxide layers.
  • a passivation layer that protects the touch screen from the external environment.
  • the touch screen of the above structure has fewer layers, and can realize the electromagnetic touch function and the capacitive touch function at the same time, and can maximize the Reduce the thickness of the finished product.
  • the extending direction of the first electromagnetic touch electrodes 210 may intersect with the extending direction of the second electromagnetic touch electrodes 220 , for example, perpendicular to each other, and the present invention is This is not limited.
  • the first electromagnetic touch electrode 210 is an electrode line surrounding at least one capacitive touch sensing electrode 110. At this time, one end of the electrode line is grounded, and One end is connected to the data selector 400 (MUX) to form a current loop.
  • MUX data selector 400
  • the electromagnetic pen touches a certain position of the touch screen the magnetic flux of the current loop of the corresponding position increases, thereby causing an increase in the induced electromotive force on the electrode line.
  • the extending direction of the first electromagnetic touch electrode is an X-axis square, the figure can be calculated. The X-axis coordinate of the electromagnetic pen contact position.
  • the second electromagnetic touch electrode 220 is an electrode line surrounding at least one capacitive touch driving electrode 120. At this time, one end of the electrode line is grounded. The other end is connected to the data selector 400 (MUX) to form a current loop.
  • MUX data selector 400
  • the electromagnetic pen touches a certain position of the touch screen the magnetic flux of the current loop of the corresponding position increases, thereby causing an increase in the induced electromotive force on the electrode line.
  • the extending direction of the second electromagnetic touch electrode is a Y-axis square, the figure can be calculated.
  • the Y-axis coordinate of the electromagnetic pen contact position can determine the specific position of the electromagnetic pen contact according to the X-axis coordinate and the Y-axis coordinate.
  • the first electromagnetic touch electrode 210 is an electrode line surrounding at least one capacitive touch sensing electrode 110 ; the second electromagnetic touch electrode 220 is also surrounded by At least one capacitive touch controls the electrode lines of the electrode 120.
  • the data selector 400 is provided with a driving T port and an inductive R port, as shown in FIG. 5a, as the other end of each electrode line of the first electromagnetic touch electrode 210. All of them are connected to one of the driving ports T or the sensing ports R of the data selector 400. Similarly, as shown in FIG. 5b, the other end of each of the electrode lines as the second electromagnetic touch electrodes 220 is also connected to the data selector 400. One of the drive ports T or the sense port R is connected. As shown in FIG.
  • the data selector is generally disposed in an electromagnetic touch driving integrated circuit (IC) 500, and the touch screen is respectively driven to each of the first electromagnetic touches by means of an electromagnetic touch driving integrated circuit (IC) 500.
  • the electrode and each of the second electromagnetic touch electrodes are loaded with an electromagnetic touch scan signal.
  • each of the first electromagnetic touch electrodes is sequentially connected with a corresponding drive port of the data selector for sequentially receiving electromagnetic
  • the first electromagnetic touch electrodes are immediately switched to be connected to the first electromagnetic touch electrodes.
  • the corresponding sensing port of the data selector is connected, so that the sensing signal outputted from the sensing port can be detected.
  • each of the second electromagnetic touch electrodes is sequentially connected with a corresponding driving port in the data selector, and is used to sequentially receive electromagnetic contacts.
  • the second electromagnetic touch electrodes are immediately switched to be connected to the second electromagnetic touch electrodes.
  • the corresponding sensing port of the data selector is connected to detect the sensing signal outputted from the sensing port; detecting the sensing signal of the sensing port connected to the first electromagnetic touch electrode and detecting the sensing port connected to the second electromagnetic touch electrode
  • the sensing signal can realize the electromagnetic touch function of the touch screen.
  • the capacitive touch sensing electrode 110 and the capacitive touch driving electrode 120 are both connected to the capacitive touch driving integrated circuit (IC ) 600 , specifically, Capacitive touch can use various known techniques, and will not be described here.
  • IC capacitive touch driving integrated circuit
  • the electromagnetic touch driving integrated circuit (IC) and the capacitive touch driving integrated circuit (IC) may be disposed on the same chip, and may be separately disposed on different chips, which is not limited herein.
  • the accuracy of the electromagnetic touch precision is ensured, for example, the number of capacitive touch sensing electrodes surrounded by the first electromagnetic touch electrode and the second electromagnetic
  • the number of capacitive touch drive motors surrounded by the touch electrodes is equal.
  • the shape of the first electromagnetic touch electrode 210 and the outer contour shape of at least one capacitive touch sensing electrode 110 surrounded by the first electromagnetic touch electrode 210 The shape of the second electromagnetic touch electrode 220 is the same as the outer shape of the at least one capacitive touch driving electrode 120 surrounded by the second electromagnetic touch electrode 220.
  • the shape of the first electromagnetic touch electrode is consistent with the shape of the outer cover of the at least one capacitive touch sensing electrode surrounded by the first electromagnetic touch electrode;
  • the shape is consistent with the outer shape of the at least one capacitive touch driving electrode surrounded by the second electromagnetic touch electrode, thereby reducing signal interference between the capacitive touch and the electromagnetic touch mode.
  • the first electromagnetic touch electrode 210 may correspond to the capacitive touch sensing electrode 110 ; the second electromagnetic touch electrode 220 It can correspond to the capacitive touch driving electrode 120, thereby ensuring that the touch screen capacitive touch and the electromagnetic touch have the same resolution, and the algorithm can be optimized to ensure minimum interference between signals.
  • the IC chip connected to the capacitive touch driving electrode ⁇ provides touch to each capacitive touch driving electrode T 3 c in the touch time period T of one frame.
  • the IC chip connected to the first electromagnetic touch electrode T(1)x sequentially supplies the electromagnetic touch scan signal T1 to the first electromagnetic touch electrode ⁇ (1) ⁇ , ⁇ 2... ⁇ , when there is an electromagnetic pen touch, the sensing signals R1, R2... which are outputted from the sensing port R(l)x corresponding to each of the first electromagnetic touch electrodes 1(1) ⁇ ..
  • the Rm ratio is provided to the electromagnetic touch scan signals T1, ⁇ 2 on the first electromagnetic touch electrode T(2)x.
  • the sensing signals R1, 2... Rm outputted from the sensing port (1) x corresponding to each of the first electromagnetic touch electrodes 1 (1) ⁇ are supplied to the first
  • the electromagnetic touch scanning signal ⁇ 1 , ⁇ 2 ... ⁇ ⁇ on an electromagnetic touch electrode T ( l ) x is equal; similarly, the IC chip connected to the second electromagnetic touch electrode ⁇ (2) ⁇
  • the second electromagnetic touch electrode ⁇ (2) ⁇ sequentially provides the electromagnetic touch scan signals T1, ⁇ 2 ... ⁇ ⁇ , corresponding to the second electromagnetic touch electrodes ⁇ (2) ⁇ when the electromagnetic pen touches
  • Rm of the sensing port R(2)x are provided to the electromagnetic touch scanning signals T1, ⁇ 2 on the second electromagnetic touch electrode T(2)x... ... ⁇ is large, when there is no electromagnetic pen touch, the sensing signals R1, R2, ... Rm outputted from the sensing ports corresponding to the respective second electromagnetic touch electrodes 2 (2) ⁇ are supplied to the first
  • the electromagnetic touch scan signals T1, ⁇ 2 ... ⁇ on the electromagnetic touch electrode T(2)x are equal, and the electromagnetic touch function is realized.
  • At least one embodiment of the present invention also provides a display device including a display device and the touch panel provided by at least one embodiment of the present invention disposed above the display device.
  • the display device can be: any product or component that has both display and touch functions, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a mobile phone such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • the display device may be a liquid crystal panel (LCD), an organic electroluminescence (OLED), a plasma (PDP) or a cathode ray (CRT) display device, etc., Make a limit.
  • LCD liquid crystal panel
  • OLED organic electroluminescence
  • PDP plasma
  • CRT cathode ray
  • At least one embodiment of the present invention provides a touch screen and a display device, wherein the first electromagnetic touch electrode and the capacitive touch sensing electrode are disposed in the same layer, and the second electromagnetic touch electrode and the capacitive touch driving electrode are disposed.
  • the same layer setting can simplify the electromagnetic layer touch effect and the capacitive touch effect while simplifying the film layer of the touch screen to the utmost, thereby reducing the thickness of the entire touch screen; and, in preparation, the first electromagnetic touch electrode and the capacitor
  • the touch sensing electrode can be fabricated by one patterning process
  • the second electromagnetic touch electrode and the capacitive touch driving electrode can be fabricated by one patterning process, thereby simplifying the preparation process to the utmost, thereby saving the production cost of the entire touch screen.

Abstract

一种触摸屏及显示装置，在该触摸屏中，将第一电磁触控电极（210）与电容触控感应电极（110）同层设置，将第二电磁触控电极（220）与电容触控驱动电极（120）同层设置，可以在保证电磁式触控效果和电容式触控效果的同时，简化触摸屏的膜层，从而降低整个触摸屏的厚度，并且可以简化制备工艺，进而节省整个触摸屏的生产成本。

Description

触摸屏及显示装置 技术领域
本发明的实施例涉及一种触摸屏及显示装置。 背景技术
随着显示技术的飞速发展， 触摸屏（ Touch Screen Panel ) 已经逐渐遍及 人们的生活中。 目前， 触摸屏按照工作原理可以分为： 电阻式、 电容式、 红 外线式以及表面声波式、 电磁式、 振波感应式等。
电容式触摸屏以其独特的触控原理， 凭借高灵敏度、 长寿命、 高透光率 等优点， 得到业界重视。 目前， 电容式触摸屏一般都釆用前附式， 其内设置 有相互绝缘的透明导电材料的电容触控驱动电极和电容触控感应电极。 当手 指触摸屏幕时， 由于人体系导体， 手指与触摸屏内的电容触控驱动电极和电 容触控感应电极之间形成耦合电容， 使得触摸点附近的电容变化， 该电容变 化在电容触控驱动电极和电容触控感应电极中导致流经触摸点的感应电流。 通过相关计算便可准确计算出触摸点的位置。
电磁式触摸屏由于可以实现原笔迹手写的特点， 在许多高阶计算机辅助 绘图（CAD， Computer Aided Design)系统， 如 AutoCAD中广泛使用。 目前， 电磁式触摸屏一般釆用背附式的电磁天线板， 这种电磁式触控天线板是由横 纵交错的金属导线构成。 图 1为一种电磁式触控天线板的结构示意图， X方 向金属导线和 Y方向金属导线相互垂直且两者之间通过绝缘层绝缘。 图 2示 出了电磁触控原理图。两条金属导线即触控电极 Y1和 Y2被 X方向的一条触 控电极相互连接， 等效成电阻 Rx; 当电磁笔靠近模组表面并滑动时， 电磁波 切割导线， 产生感应电动势 ， 而越靠近电磁笔的位置， 产生的感应电动势 越强。触控电极 Y1和 Y2接收到的电势矢量大小相当于滑动电阻箭头在电阻 之间的位置来表示， 由此来确定 Y方向的电极上感应电动势大小， 最终确定 Y电极位置； 同理 X方向上的电极与其原理一致。 由于两组上下交叠， 笔在 移动时， 可理解为两滑动电阻同向或反向同步滑动。 确定了 X、 Y的坐标， 就可以计算出笔尖在平面的坐标位置。 同时， 电磁笔的前端设有压感装置， 通过按压的力度可以确定笔迹的粗细， 这也就是电磁式触控天线板可以实现 原笔迹手写的原因。 主控芯片将触控天线板接收的电压信号进行处理和运算 后， 得到电磁手写笔的位置和笔压的压力。
目前， 为了实现手笔双触控， 可将电容式和电磁式搭配使用。 发明内容
本发明至少一实施例提供的一种触摸屏及显示装置， 用以实现在保证电 磁式触控功能和电容式触控功能的前提下， 降低整个触摸屏的厚度。
本发明至少一实施例提供的一种触摸屏， 包括： 电容触控感应电极； 与 所述电容触控感应电极相互绝缘且交叉而置的电容触控驱动电极； 与所述电 容触控感应电极相互绝缘且同层设置的第一电磁触控电极； 与所述电容触控 驱动电极相互绝缘且同层设置的、 与所述第一电磁触控电极相互绝缘且交叉 而置的第二电磁触控电极。
本发明至少一实施例提供的一种显示装置， 包括显示器件和设置于所述 显示器件上方的本发明实施例提供的上述任一种触摸屏。 附图说明
为了更清楚地说明本发明实施例的技术方案， 下面将对实施例的附图作 简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例， 而非对本发明的限制。
图 1为一种电磁式触控天线板的结构示意图；
图 2为电磁式触控的原理图；
图 3为本发明实施例提供的触摸屏的结构示意图之一；
图 4a为图 3沿 A-A'方向的截面示意图；
图 4b为图 3沿 B-B'方向的截面示意图；
图 5a为本发明实施例提供的同层设置的电容触控感应电极与第一电磁 触控电极的结构示意图；
图 5b 为本发明实施例提供的同层设置的电容触控驱动电极与第二电磁 触控电极的结构示意图；
图 6为本发明实施例提供的触摸屏的结构示意图之二； 图 7为本发明实施例提供的触摸屏实现触控功能的时序图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图， 对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都属于本发明保护的范围。
附图中各层薄膜厚度和区域大小形状不反映触摸屏的真实比例， 目的只 是示意说明本发明内容。
发明人发现， 如果釆用电容式和电磁式搭配使用， 则会导致成品厚度较 厚， 不符合目前市场的需求。
本发明至少一实施例提供的一种触摸屏， 如图 3所示， 包括： 电容触控 感应电极 110、 与电容触控感应电极 110相互绝缘且交叉而置的电容触控驱 动电极 120; 该触摸屏还包括： 与电容触控感应电极 110相互绝缘且同层设 置的第一电磁触控电极 210; 与电容触控驱动电极 120相互绝缘且同层设置 的、与第一电磁触控电极 210相互绝缘且交叉而置的第二电磁触控电极 220。
本发明至少一实施例提供的上述触摸屏， 将第一电磁触控电极与电容触 控感应电极同层设置， 将第二电磁触控电极与电容触控驱动电极同层设置， 这样可以在保证电磁式触控效果和电容式触控效果的同时， 最大限度的简化 触摸屏的膜层， 从而降低整个触摸屏的厚度。
例如， 在制备时， 第一电磁触控电极与电容触控感应电极可以通过一次 构图工艺制成， 第二电磁触控电极与电容触控驱动电极可以通过一次构图工 艺制成， 从而可以最大限度的简化制备工艺， 进而可以节省整个触摸屏的生 产成本。
在本发明至少一实施例中， 为了尽可能的增加触控模组的透光率， 例如 电容触控感应电极、 电容触控驱动电极、 第一电磁触控电极和第二电磁触控 电极的材料均可以为透明导电氧化物， 例如可以釆用铟锡氧化物 （ITO )材 料制备。
在本发明至少一实施例中， 为了进一步增加触摸屏的透光率， 例如将电 容触控感应电极、 电容触控驱动电极、 第一电磁触控电极和第二电磁触控电 极同层设置。 此时， 触摸屏还包括： 桥接相邻的电容触控感应电极和桥接相 邻的第一电磁触控电极的桥接层， 或者桥接相邻的电容触控驱动电极和桥接 相邻的第二电磁触控电极的桥接层； 位于桥接层与同层设置的电容触控感应 电极、 电容触控驱动电极、 第一电磁触控电极和第二电磁触控电极之间的绝 缘层。
此时， 从本发明至少一实施例提供的触摸屏的结构中可以看出， 触控屏 可以包括三个主要膜层， 即由同层设置的电容触控驱动电极、 电容触控感应 电极、 第一电磁触控电极和第二电磁触控电极组成的一透明导电氧化物层， 由桥接相邻的电容触控感应电极和桥接相邻的第一电磁触控电极的桥接层， 或者桥接相邻的电容触控驱动电极和桥接相邻的第二电磁触控电极的桥接层 组成的金属层， 以及位于透明导电氧化物层与金属层之间的绝缘层。 另外， 在触摸屏的最上面一般还会有保护触摸屏不受外界环境影响的钝化层。 上述 结构的触摸屏的膜层较少， 在实现兼具电磁式触控功能和电容式触控功能的 同时， 可以最大限度地降低成品的厚度。
图 4a为图 3沿 A-A'方向的截面示意图， 图 4b为图 3沿 B-B'方向的截 面示意图。 在本发明至少一实施例提供的上述触摸屏中， 如图 3、 图 4a和图 4b所示， 第一电磁触控电极 210与第二电磁触控电极 220也可以异面设置， 即同层设置的第一电磁触控电极 210和电容触控感应电极 110层与同层设置 的第二电磁触控电极 220和电容触控驱动电极 120位于不同层； 此时， 触摸 屏还包括： 位于同层设置的电容触控感应电极 110和第一电磁触控电极 210 与同层设置的电容触控驱动电极 120和第二电磁触控电极 220之间的绝缘层 300。
此时， 从本发明至少一实施例提供的触摸屏的结构中可以看出， 触控屏 也可以包括三个主要膜层， 即由同层设置的电容触控感应电极和第一电磁触 控电极组成的第一透明导电氧化物层， 由同层设置的电容触控驱动电极和第 二电磁触控电极组成的第二透明导电氧化物层， 以及位于第一透明导电氧化 物层与第二透明导电氧化物层之间的绝缘层。 另外， 在触摸屏的最上面一般 还会有保护触摸屏不受外界环境影响的钝化层。 上述结构的触摸屏的膜层较 少， 在实现兼具电磁式触控功能和电容式触控功能的同时， 可以最大限度地 降低成品的厚度。
在本发明至少一实施例提供的上述触摸屏中， 如图 6所示， 第一电磁触 控电极 210的延伸方向可以与第二电磁触控电极 220的延伸方向交叉， 例如 彼此垂直， 本发明在此不做限定。
在本发明至少一实施例提供的上述触摸屏中，如图 5a所示，第一电磁触 控电极 210为包围至少一条电容触控感应电极 110的电极线， 这时， 电极线 的一端接地， 另一端连接数据选择器 400 ( MUX )， 从而形成一个电流回路。 当电磁笔接触触摸屏的某一位置时， 对应位置的电流回路的磁通量增加， 从 而导致该电极线上的感应电动势增加， 假如第一电磁触控电极的延伸方向为 X轴方形， 从而就可以算出电磁笔接触位置的 X轴坐标。
或者， 在本发明至少一实施例提供的上述触摸屏中， 如图 5b所示， 第二 电磁触控电极 220为包围至少一条电容触控驱动电极 120的电极线， 这时， 电极线的一端接地， 另一端连接数据选择器 400 ( MUX ) ， 从而形成一个电 流回路。 当电磁笔接触触摸屏的某一位置时， 对应位置的电流回路的磁通量 增加， 从而导致该电极线上的感应电动势增加， 假如第二电磁触控电极的延 伸方向为 Y轴方形， 从而就可以算出电磁笔接触位置的 Y轴坐标， 才艮据 X 轴坐标和 Y轴坐标就可以确定出电磁笔接触的具体位置。
在本发明至少一实施例提供的上述触摸屏中， 如图 6所示， 第一电磁触 控电极 210为包围至少一条电容触控感应电极 110的电极线； 第二电磁触控 电极 220也为包围至少一条电容触控驱动电极 120的电极线。
在本发明至少一实施例提供的上述触摸屏中， 数据选择器 400中设置有 驱动 T端口和感应 R端口， 如图 5a所示， 作为第一电磁触控电极 210的每 一条电极线的另一端均与数据选择器 400中的一个驱动端口 T或者感应端口 R连接； 同理， 如图 5b所示， 作为第二电磁触控电极 220的每一条电极线的 另一端也均与数据选择器 400中的一个驱动端口 T或者感应端口 R连接。如 图 6所示， 数据选择器一般设置在电磁触控驱动集成电路（IC ) 500中， 触 摸屏通过电磁触控驱动集成电路（IC ) 500 以逐行扫描的方式分别向各第一 电磁触控电极和各第二电磁触控电极加载电磁触控扫描信号。
本发明至少一实施例提供的上述触摸屏在实现电磁触控功能时， 各第一 电磁触控电极依次与数据选择器中对应的驱动端口连接， 用于依次接收电磁 触控扫描信号， 在数据选择器的各驱动端口分别向各第一触控驱动电极提供 完电磁触控扫描信号之后， 各第一电磁触控电极马上切换到与各第一电磁触 控电极连接的数据选择器中对应的感应端口相连， 从而可以检测从感应端口 输出的感应信号； 同理， 各第二电磁触控电极依次与数据选择器中对应的驱 动端口连接， 用于依次接收电磁触控扫描信号， 在数据选择器的各驱动端口 分别向各第二触控驱动电极提供完电磁触控扫描信号之后， 各第二电磁触控 电极马上切换到与各第二电磁触控电极连接的数据选择器中对应的感应端口 相连， 从而可以检测从感应端口输出的感应信号； 通过检测与第一电磁触控 电极相连的感应端口的感应信号和检测与第二电磁触控电极相连的感应端口 的感应信号可以实现触摸屏的电磁式触控功能。
进一步地， 本发明至少一实施例提供的上述触摸屏， 如图 6所示， 电容 触控感应电极 110和电容触控驱动电极 120均与电容触控驱动集成电路（ IC ) 600相连， 具体地， 电容式触控可以釆用各种已知的技术， 在此不再赘述。
在具体实施时， 电磁触控驱动集成电路（IC )和电容触控驱动集成电路 ( IC )可以设置在同一芯片上， 当然也可以分别设置在不同的芯片上， 在此 不做限定。
在本发明至少一实施例提供的上述触摸屏中， 为了优化算法， 保证电磁 触控精度的均勾性， 例如， 第一电磁触控电极所包围的电容触控感应电极的 条数与第二电磁触控电极所包围的电容触控驱动电机的条数相等。
在本发明至少一实施例提供的上述触摸屏中，如图 5a所示，第一电磁触 控电极 210的形状与第一电磁触控电极 210所包围的至少一条电容触控感应 电极 110外轮廓形状一致； 或者， 如图 5b所示， 第二电磁触控电极 220的形 状与第二电磁触控电极 220所包围的至少一条电容触控驱动电极 120外轮廊 形状一致。
在本发明至少一实施例提供的上述触摸屏中， 第一电磁触控电极的形状 与第一电磁触控电极所包围的至少一条电容触控感应电极外轮廊形状一致； 第二电磁触控电极的形状与第二电磁触控电极所包围的至少一条电容触控驱 动电极外轮廊形状一致，从而减少电容触控与电磁触控模式之间的信号干扰。
在本发明至少一实施例提供的上述触摸屏中， 如图 6所示， 第一电磁触 控电极 210可以与电容触控感应电极 110——对应； 第二电磁触控电极 220 可以与电容触控驱动电极 120——对应， 从而保证触摸屏电容式触控和电磁 式触控具有相同的分辨率， 进而可以优化算法， 保证信号之间的干扰最小。
例如， 如图 7所示的驱动时序图中， 在一帧的触控时间段 T内， 与电容 触控驱动电极 τρ ί连接的 IC芯片向各电容触控驱动电极 T 3 c分别提供触 控扫描信号 Tl、 Τ2... ... Τη, 同时各电容触控感应电极 R(3)x分别进行侦测触 控感应信号 Rl、 R2... ... Rm， 实现电容式触控功能。 同时， 在一帧的触控时 间段 T内， 与第一电磁触控电极 T(l)x连接的 IC芯片向第一电磁触控电极 Τ(1)χ依次提供电磁触控扫描信号 Tl、 Τ2... ... Τη, 当有电磁笔触摸时， 与各 第一电磁触控电极 Τ(1)χ对应的感应端口 R(l)x输出的感应信号 Rl、 R2... ... Rm比提供给该第一电磁触控电极 T(2)x上的电磁触控扫描信号 Tl、 Τ2... ...
Τη 大， 当无电磁笔触摸时， 与各第一电磁触控电极 Τ(1)χ对应的感应端口 (l)x输出的感应信号 Rl、 2... ... Rm与提供给该第一电磁触控电极 T(l)x 上的电磁触控扫描信号 Τ 1、 Τ2... ... Τη相等；同理，与第二电磁触控电极 Τ(2)χ 连接的 IC芯片向第二电磁触控电极 Τ(2)χ依次提供电磁触控扫描信号 Tl、 Τ2... ... Τη, 当有电磁笔触摸时， 与各第二电磁触控电极 Τ(2)χ对应的感应端 口 R(2)x输出的感应信号 Rl、R2... ... Rm比提供给该第二电磁触控电极 T(2)x 上的电磁触控扫描信号 Tl、 Τ2... ... Τη大， 当无电磁笔触摸时， 与各第二电 磁触控电极 Τ(2)χ对应的感应端口输出的感应信号 Rl、 R2... ... Rm与提供给 该第一电磁触控电极 T(2)x上的电磁触控扫描信号 Tl、 Τ2... ... Τη相等， 实 现电磁式触控功能。
本发明至少一实施例还提供了一种显示装置， 包括显示器件和设置于显 示器件上方的本发明至少一实施例提供的上述触摸屏。 该显示装置可以为： 手机、 平板电脑、 电视机、 显示器、 笔记本电脑、 数码相框、 导航仪等任何 兼具显示和触控功能的产品或部件。 该显示装置的实施可以参见上述触摸屏 的实施例， 重复之处不再赘述。
在本发明至少一实施例提供的上述显示装置中， 显示器件可以为液晶屏 ( LCD ) 、 有机电致发光（OLED ) 、 等离子体（PDP )或阴极射线（CRT ) 显示器件等， 在此不做限定。
本发明至少一实施例提供的一种触摸屏及显示装置， 将第一电磁触控电 极与电容触控感应电极同层设置， 将第二电磁触控电极与电容触控驱动电极 同层设置， 可以在保证电磁式触控效果和电容式触控效果的同时最大限度的 简化触摸屏的膜层， 从而降低整个触摸屏的厚度； 并且， 在制备时， 第一电 磁触控电极与电容触控感应电极可以通过一次构图工艺制成， 第二电磁触控 电极与电容触控驱动电极可以通过一次构图工艺制成， 从而可以最大限度的 简化制备工艺， 进而可以节省整个触摸屏的生产成本。
以上所述仅是本发明的示范性实施方式， 而非用于限制本发明的保护范 围， 本发明的保护范围由所附的权利要求确定。
本申请要求于 2014年 4月 9 日递交的中国专利申请第 201410140409.3 号的优先权， 在此全文引用上述中国专利申请公开的内容以作为本申请的一 部分。

Claims

权利要求书
1、 一种触摸屏， 包括：
电容触控感应电极；
与所述电容触控感应电极相互绝缘且交叉而置的电容触控驱动电极； 与所述电容触控感应电极相互绝缘且同层设置的第一电磁触控电极； 与所述电容触控驱动电极相互绝缘且同层设置的、 与所述第一电磁触控 电极相互绝缘且交叉而置的第二电磁触控电极。
2、 如权利要求 1所述的触摸屏， 其中， 所述电容触控感应电极、 所述电 容触控驱动电极、所述第一电磁触控电极和所述第二电磁触控电极同层设置， 所述触摸屏还包括：
桥接相邻的所述电容触控感应电极和桥接相邻的所述第一电磁触控电极 的桥接层， 或者桥接相邻的所述电容触控驱动电极和桥接相邻的所述第二电 磁触控电极的桥接层； 以及
位于所述桥接层与同层设置的所述电容触控感应电极、 所述电容触控驱 动电极、 所述第一电磁触控电极和所述第二电磁触控电极之间的绝缘层。
3、如权利要求 1所述的触摸屏， 其中， 所述第一电磁触控电极与所述第 二电磁触控电极异面设置， 所述触摸屏还包括：
位于同层设置的所述电容触控感应电极和所述第一电磁触控电极与同层 设置的所述电容触控驱动电极和所述第二电磁触控电极之间的绝缘层。
4、 如权利要求 1-3任一所述的触摸屏， 其中， 所述第一电磁触控电极的 延伸方向与所述第二电磁触控电极的延伸方向垂直。
5、 如权利要求 1-4任一项所述的触摸屏， 其中：
所述第一电磁触控电极为包围至少一条所述电容触控感应电极的电极 线； 和 /或
所述第二电磁触控电极为包围至少一条所述电容触控驱动电极的电极 线。
6、如权利要求 5所述的触摸屏， 其中， 所述第一电磁触控电极的形状与 所述第一电磁触控电极所包围的至少一条所述电容触控感应电极外轮廊形状 一致； 和 /或 所述第二电磁触控电极的形状与所述第二电磁触控电极所包围的至少一 条所述电容触控驱动电极外轮廊形状一致。
7、如权利要求 5或 6所述的触摸屏， 其中， 所述第一电磁触控电极与所 述电容触控感应电极——对应；
所述第二电磁触控电极与所述电容触控驱动电极——对应。
8、如权利要求 1-7任一项所述的触摸屏，其中，所述电容触控感应电极、 所述电容触控驱动电极、 所述第一电磁触控电极和所述第二电磁触控电极的 材料均为透明导电氧化物。
9、一种显示装置， 包括显示器件和设置于所述显示器件上方的如权利要 求 1-8任一项所述的触摸屏。
10、如权利要求 9所述的显示装置， 其中， 所述显示器件为液晶显示屏、 有机电致发光显示屏、 等离子体显示屏、 或阴极射线显示屏。
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