WO2017012294A1 - 触控模组、触摸屏、其触摸定位方法及显示装置 - Google Patents

触控模组、触摸屏、其触摸定位方法及显示装置 Download PDF

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Publication number
WO2017012294A1
WO2017012294A1 PCT/CN2016/070123 CN2016070123W WO2017012294A1 WO 2017012294 A1 WO2017012294 A1 WO 2017012294A1 CN 2016070123 W CN2016070123 W CN 2016070123W WO 2017012294 A1 WO2017012294 A1 WO 2017012294A1
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WIPO (PCT)
Prior art keywords
touch
touch electrode
electrode lines
electrode line
film layer
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PCT/CN2016/070123
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English (en)
French (fr)
Inventor
韩鹏
王秀荣
高博
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/102,377 priority Critical patent/US10048796B2/en
Publication of WO2017012294A1 publication Critical patent/WO2017012294A1/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
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—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
    • G06F3/0445—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
    • G06F2203/04104—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

  • Embodiments of the present invention relate to a touch module, a touch screen, a touch positioning method thereof, and a display device.
  • the touch screen can be divided into: a capacitive sensing type touch screen, a resistive sensing type touch screen and an optical sensing type touch screen; wherein the capacitive sensing type touch screen can further comprise a self-capacitance sensing type touch screen and a mutual capacitance sensing type touch screen.
  • the touch-sensing of the self-capacitance sensing type touch screen is relatively high, and the accuracy of the touch sensing is high.
  • the embodiment of the invention provides a touch module, a touch screen, a touch positioning method thereof and a display device for implementing multi-touch on the self-capacitance sensing type touch screen.
  • the embodiment of the present invention provides a touch module, including: a plurality of first touch electrode lines and a plurality of second touch electrode lines that are disposed in a mutually insulated manner; and the first touch electrode lines and the The plurality of third touch electrode lines are disposed on the second touch electrode line and are insulated from each other; the orthographic projection of the plurality of first touch electrode lines on the film layer where the third touch electrode line is located The intersection of the plurality of second touch electrode lines at the orthographic projection of the film layer where the third touch electrode line is located is located on the third touch electrode line.
  • the film layer of the plurality of first touch electrode lines, the film layer of the plurality of second touch electrode lines, and the plurality of third layers The touch panel further includes: a film layer located in the film layer where the plurality of first touch electrode lines are located, a film layer where the plurality of second touch electrode lines are located, and the An insulating layer between the layers of the plurality of third touch electrode lines.
  • the plurality of third touch electrodes The lines are located on the same film layer; the plurality of third touch electrode lines are parallel to each other.
  • the plurality of first touch electrode lines are orthographically projected on the film layer of the plurality of third touch electrode lines and the plurality of second The intersection of the touch electrode lines on the orthographic projection of the film layer where the plurality of third touch electrode lines are located is located on different third touch electrode lines.
  • the plurality of third touch electrode lines are located on at least two film layers; and the plurality of third touch electrode lines belonging to the same film layer are mutually Parallel; the plurality of third touch electrode lines belonging to different film layers are disposed at intersection.
  • the embodiment of the invention further provides a touch screen, comprising: the touch module provided by the embodiment of the invention.
  • the touch panel further includes: a display panel; the display panel includes an upper substrate and a lower substrate disposed opposite to each other; and the touch module is located on the upper substrate facing the lower substrate One side; or, the touch module is located on a side of the lower substrate facing the upper substrate.
  • the embodiment of the invention further provides a display device, comprising: the touch screen provided by the embodiment of the invention.
  • the embodiment of the present invention further provides a touch positioning method for a touch screen, comprising: loading a touch driving signal on each of the plurality of first touch electrode lines and the plurality of second touch electrode lines; and detecting the plurality of first touches Whether the voltage signal of the touch driving signal coupled by the control electrode line and the plurality of second touch electrode lines is changed by the sensing capacitance; determining at least two sums of the plurality of first touch electrode lines When the voltage signals on the at least two of the plurality of second touch electrode lines are changed, the touch driving signals are respectively applied to the plurality of third touch electrode lines, and the plurality of third touch electrode lines are detected to pass. Whether the voltage signal of the touch driving signal coupled by the sensing capacitor changes, and the first touch electrode line, the second touch electrode line, and the third touch change according to the detected voltage signal Control the electrode line to determine the contact position of the touch screen.
  • the method further includes: determining that a voltage signal occurs on only one of the plurality of first touch electrode lines and at least one of the plurality of second touch electrode lines Changing, or determining that the voltage signal on at least one of the plurality of first touch electrode lines and the one of the plurality of second touch electrode lines changes, according to the detected voltage signal
  • the first touch electrode line and the second touch electrode line determine a contact position of the touch screen.
  • FIG. 1 is a schematic structural diagram of a touch module according to an embodiment of the present disclosure
  • FIG. 2a and 2b are cross-sectional views taken along line A'A' of Fig. 1
  • Fig. 2c is a cross-sectional view taken along line BB of Fig. 1;
  • FIG. 3 is a schematic structural diagram of another touch module according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of still another touch module according to an embodiment of the present disclosure.
  • Figure 4b is a cross-sectional view of Figure 4a along the AA direction;
  • FIG. 5 is a flowchart of a touch positioning method of a touch screen according to an embodiment of the present invention.
  • a self-capacitance sensing type touch screen a plurality of first touch electrode lines and a plurality of second touch electrode lines are provided which are disposed in a crosswise manner and are insulated from each other.
  • the method for determining the position of the contact is: when the touch driving signals are respectively loaded on the plurality of first touch electrode lines and the plurality of second touch electrode lines, detecting the plurality of first touch electrode lines and the plurality of strips respectively
  • the touch signal is coupled to the voltage signal through the sensing capacitor.
  • the human body electric field acts on the sensing capacitor, so that the capacitance value of the sensing capacitor changes, thereby changing the corresponding first.
  • the voltage signal coupled by the control electrode line can determine the position of the contact according to the change of the voltage signal.
  • the above method can only achieve single touch, and cannot achieve multi-touch. For example, when it is detected that the voltage signals on the two first touch electrode lines and the two second touch electrode lines change, four contact positions are determined, and the true touch is among the four contact positions. Outside, there may be ghosts.
  • a self-capacitance sensing type touch screen generally implements multi-touch by an algorithm, for example, using a time difference of two finger touches to distinguish the contact positions of two fingers, or, by using two contacts, respectively moving in different directions to distinguish two The position of the contacts.
  • an algorithm for example, using a time difference of two finger touches to distinguish the contact positions of two fingers, or, by using two contacts, respectively moving in different directions to distinguish two The position of the contacts.
  • the self-capacitive sensing type touch screen cannot determine the plurality of contacts by this algorithm. Position, which makes multi-touch impossible.
  • FIG. 1 and FIG. 2 A touch module according to an embodiment of the present invention is shown in FIG. 1 and FIG. 2 ( FIG. 2 is a cross-sectional view taken along line A'A' of FIG. 1 ), and includes a plurality of first touches that are cross-shaped and insulated from each other.
  • the plurality of first touch electrode lines are respectively detected.
  • a plurality of second touch electrode lines are coupled to the voltage signal through the sensing capacitor.
  • the touch driving signals need to be loaded on the plurality of third touch electrode lines, and the voltage signals coupled by the plurality of third touch electrode lines through the sensing capacitors are detected.
  • the third projection antenna line is located at the intersection of the orthographic projection of the film layer of the third touch electrode line and the orthographic projection of the plurality of second touch electrode lines at the film layer of the third touch electrode line.
  • the plurality of third touches can be calculated by the coordinates of each intersection point and the angle between the third touch electrode line and the first touch electrode line (or the second touch electrode line)
  • the coordinates of the electrode line are controlled such that the first touch electrode line, the second touch electrode line, and the third touch electrode line change according to the detected voltage signal, that is, the position of the contact can be accurately determined.
  • the position of the plurality of contacts is not required to be determined by an algorithm, so that the touch screen can realize multi-touch in any case, so that the touch screen can perform operations such as zooming, panning, and rotating. .
  • a plurality of layers of the first touch electrode line, a plurality of second touch electrode lines, and a plurality of third touch electrode lines are disposed.
  • Layers can be set in the same layer.
  • an insulating pad is disposed between the second touch electrode line 2 and the third touch electrode line 3
  • the plurality of second touch electrode lines 2 are disposed in the film layer and the plurality of third touch electrode lines.
  • the film layer can be set in the same layer; or, as shown in FIG.
  • FIG. 2b is a cross-sectional view of Figure 1 taken along line BB.
  • the film layer where the plurality of first touch electrode lines 1 are located in the film layer where the plurality of first touch electrode lines 1 are located, and the film layers of the plurality of second touch electrode lines 2 are
  • the film layer of the third touch electrode line 3 is disposed in a different layer
  • the film layer of the plurality of first touch electrode lines 1 and the film layer of the plurality of second touch electrode lines 2 and the plurality of strips may be included.
  • an insulating layer 4 is disposed between the film layer where the plurality of first touch electrode lines 1 are located and the film layer of the plurality of second touch electrode lines 2, and the plurality of second touch electrodes are disposed.
  • An insulating layer 4 is also disposed between the film layer where the line 2 is located and the film layer where the plurality of third touch electrode lines 3 are located.
  • a plurality of third touch electrode lines 3 are located on the same film layer, and a plurality of third touch electrode lines 3 are provided. Parallel to each other. example For example, when the touch driving signals are respectively applied to the plurality of first touch electrode lines 1 and the plurality of second touch electrode lines 2, the plurality of first touch electrode lines 1 and the plurality of second touch electrodes are respectively detected.
  • the line 2 passes the voltage signal coupled by the sensing capacitor, and when the human body contacts the point A and the point B at the same time, the first touch electrode line a, the first touch electrode line b, the second touch electrode line c and the first The voltage signal on the second touch electrode line d changes.
  • Four contacts A, B, C, and D can be determined by the first touch electrode line a, the first touch electrode line b, the second touch electrode line c, and the second touch electrode line d, and the four touches There are two ghost points in the point.
  • Loading a touch driving signal on the plurality of third touch electrode lines 3 and detecting a voltage signal coupled by the plurality of third touch electrode lines 3 through the sensing capacitor, the voltage signal on the third touch electrode line f can be detected.
  • the third touch electrode line f, the intersection position A of the first touch electrode line a and the second touch electrode line d, and the third touch electrode line f, the first touch electrode line b, and the first The intersection position B of the two touch electrode lines c is a real contact.
  • the voltage signals on the third touch electrode line e and the third touch electrode line g do not change, and the intersection of the third touch electrode line e, the first touch electrode line a, and the second touch electrode line c
  • the intersection position D of the position C and the third touch electrode line g, the first touch electrode line b and the second touch electrode line d are ghost points, so that ghost points can be accurately excluded and the position of the contacts can be accurately determined.
  • the touch module shown in FIG. 1 and FIG. 2a-c can accurately determine the position of two contacts, however, for three-point touch or even more touch
  • ghost points may still exist in the determined contacts.
  • the touch driving signals are respectively applied to the plurality of first touch electrode lines 1 and the plurality of second touch electrode lines 2
  • the plurality of first touch electrode lines 1 and the plurality of second touch electrodes are respectively detected.
  • the line 2 passes the voltage signal coupled by the sensing capacitor, and when the human body simultaneously contacts the A point, the B point, and the E point, the first touch electrode line a, the first touch electrode line b, and the first touch electrode line can be detected.
  • the voltage signals on the second touch electrode line c and the second touch electrode line d are changed, by the first touch electrode line a, the first touch electrode line b, the first touch electrode line h,
  • the two touch electrode lines c and the second touch electrode lines d can determine six contacts A, B, C, D, E, and F, and there are three ghost points among the six contacts.
  • the third touch electrode line 3 is loaded with a touch driving signal, and the voltage signals coupled by the plurality of third touch electrode lines 3 through the sensing capacitor are detected, so that the third touch electrode line f and the third touch can be detected.
  • the pressure signal changes, at the third touch electrode line f, the intersection position A of the first touch electrode line a and the second touch electrode line d, the third touch electrode line f, the first touch electrode line b, and The intersection position B of the second touch electrode line c, the intersection position D of the third touch electrode line g, the first touch electrode line b and the second touch electrode line d, and the third touch electrode line g,
  • the touch module shown in FIG. 1 and FIG. 2a-c cannot determine that the D point is a ghost point.
  • the touch module provided by the embodiment of the present invention, as shown in FIG. 3, the front projection and the plurality of first touch electrode lines 1 in the film layer of the plurality of third touch electrode lines 3
  • the intersection of the two touch electrodes 2 at the intersection of the orthographic projections of the film layers of the plurality of third touch electrodes 3 may be respectively located on different third touch electrodes 3, that is, the plurality of first touch electrodes 1
  • the intersection of the orthographic projection of the film layer of the plurality of third touch electrode lines 3 and the orthographic projection of the plurality of second touch electrode lines 2 at the film layer of the plurality of third touch electrode lines 3, and the third touch The control electrode lines 3 correspond one-to-one.
  • the touch module shown in FIG. 3 can accurately detect the change of the voltage signal on the third touch electrode line 3, regardless of the two-touch, three-touch or even more touch. Eliminate ghost points and accurately determine the position of the contacts.
  • the number of the third touch electrode lines is large, which makes the manufacturing process of the touch module more difficult, and for the third touch electrode.
  • the precision of the manufacturing process of the wire is high.
  • the touch module provided by the embodiment of the present invention, as shown in FIG. 4a and FIG. 4b, the plurality of third touch electrode lines 3 are located on at least two film layers (FIG. 4b is a plurality of third touch electrode lines).
  • FIG. 4b is a plurality of third touch electrode lines.
  • the third touch electrode lines 3 belonging to the same film layer are parallel to each other, and the third touch electrode lines 3 belonging to different film layers are disposed at intersection.
  • the touch driving signals are respectively applied to the plurality of first touch electrode lines 1 and the plurality of second touch electrode lines 2
  • the plurality of first touch electrode lines 1 and the plurality of second touch electrodes are respectively detected.
  • the line 2 passes the voltage signal coupled by the sensing capacitor, and when the human body simultaneously contacts the A point, the B point, and the E point, the first touch electrode line a, the first touch electrode line b, and the first touch electrode line can be detected. h, the voltage signals on the second touch electrode line c and the second touch electrode line d are changed, by the first touch electrode line a, the first touch electrode line b, the first touch electrode line h, The two touch electrodes line c and the second touch electrode line d can determine six contacts A, B, C, D, E, and F, and the six contacts There are three ghost points in it. Loading a plurality of third touch electrode lines 3 (eg, e, f, g in FIG.
  • the voltage signal coupled by the sensing capacitor can detect a change in the voltage signals on the third touch electrode line f and the third touch electrode line g, and the first touch electrode line a and the first touch electrode line b,
  • the first touch electrode line h, the second touch electrode line c, the second touch electrode line d, the third touch electrode line f, and the third touch electrode line g can determine four contacts A, B, and D.
  • E a ghost point exists in the four contacts; and a plurality of third touch electrode lines 3 (eg, i, j, k, m in FIG.
  • an insulating layer may be disposed between the two film layers of the third touch electrode line to ensure the third touch electrode lines located in different film layers. Insulate each other.
  • the embodiment of the present invention further provides a touch screen, which includes the touch module provided by the embodiment of the present invention.
  • a touch screen which includes the touch module provided by the embodiment of the present invention.
  • the touch screen refer to the embodiment of the touch module, and the repeated description is omitted.
  • a display panel may also be included.
  • the display panel may include an upper substrate and a lower substrate.
  • the touch module may be located on a side of the upper substrate facing the lower substrate, or the touch module may be located on a side of the lower substrate facing the upper substrate.
  • the above touch screen provided by the embodiment of the present invention is an in-cell touch screen.
  • the touch screen provided by the embodiment of the present invention can be applied to a liquid crystal display (LCD), an organic electroluminescent display (OELD), and a plasma display panel (PDP). Any one of the flat display panels is not limited herein.
  • LCD liquid crystal display
  • OELD organic electroluminescent display
  • PDP plasma display panel
  • Any one of the flat display panels is not limited herein.
  • the above-mentioned touch screen provided by the embodiment of the present invention is applied to an LCD as an example.
  • the touch module can be located on the side of the opposite substrate facing the array substrate in the LCD, or the touch module can also be located in the array substrate in the LCD. The side facing the opposite substrate is not limited herein.
  • the above-mentioned touch screen provided by the embodiment of the present invention is not limited to the in-cell touch screen, and may be a surface type touch screen; or it may be an external touch screen, which is not limited herein.
  • the touch module is located on the display side of the display panel, and the display panel may be any one of a flat panel display panel such as an LCD, an OELD, or a PDP.
  • the embodiment of the invention further provides a display device, comprising: the touch screen provided by the embodiment of the invention, the display device can be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, etc.
  • a display device comprising: the touch screen provided by the embodiment of the invention, the display device can be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, etc.
  • a product or part that displays functionality For the implementation of the display device, reference may be made to the embodiment of the touch screen described above, and the repeated description is omitted.
  • the embodiment of the present invention further provides a touch positioning method of the touch screen, as shown in FIG. 5, including the following steps:
  • S501 loading a touch driving signal on each of the plurality of first touch electrode lines and the plurality of second touch electrode lines;
  • step S502 detecting whether a voltage signal of the touch driving signal coupled by the plurality of first touch electrode lines and the plurality of second touch electrode lines is coupled through the sensing capacitor; determining at least two of the plurality of first touch electrode lines When the voltage signal on at least two of the strips and the plurality of second touch electrode lines changes, step S503 is performed;
  • S503 loading a touch driving signal on each of the plurality of third touch electrode lines, and detecting whether a voltage signal of the touch driving signal coupled by the plurality of third touch electrode lines is coupled by the sensing capacitor, according to the detected voltage signal.
  • the first touch electrode line, the second touch electrode line, and the third touch electrode line are changed to determine the contact position of the touch screen.
  • step S504 is performed;
  • S504 Determine a contact position of the touch screen according to the first touch electrode line and the second touch electrode line that change according to the detected voltage signal. Determining a voltage signal on at least one of the plurality of first touch electrode lines and at least one of the plurality of second touch electrode lines, or determining a plurality of first touch electrodes When at least one of the polar lines and the voltage signal on only one of the plurality of second touch electrode lines are changed, the positions of the real contacts can be accurately determined only by the first touch electrode lines and the second touch electrode lines. There is no need to load the touch driving signal to the third touch electrode line, so that the power consumption of the touch screen can be reduced.
  • the touch module, the touch screen, the touch positioning method, and the display device are provided in the touch module, and the first touch electrode line and the second touch electrode line are disposed in the touch module and are mutually arranged.
  • the plurality of third touch electrode lines are insulated, and the front projection of the plurality of first touch electrode lines in the film layer of the third touch electrode line and the plurality of second touch electrode lines are located at the third touch electrode line.
  • the intersection of the orthographic projection of the film layer is located on the third touch electrode line; thus, when the positions of the plurality of contacts cannot be accurately determined by using the first touch electrode line and the second touch electrode line,
  • the three touch electrode lines can eliminate ghost points, so that the positions of the plurality of contacts can be accurately determined; and the position of the plurality of contacts can be determined by an algorithm, so that the touch screen can realize multi-touch in any situation. .

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

Abstract

一种触控模组、触摸屏、其触摸定位方法及显示装置。在触控模组中设置与第一触控电极线(1)和第二触控电极线(2)交叉设置且相互绝缘的多条第三触控电极线(3)，且多条第一触控电极线(1)在第三触控电极线(3)所在膜层的正投影与多条第二触控电极线(2)在第三触控电极线(3)所在膜层的正投影的交叉点位于第三触控电极线上(3)。

Description

触控模组、触摸屏、其触摸定位方法及显示装置 技术领域
本发明的实施例涉及触控模组、触摸屏、其触摸定位方法及显示装置。
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。触摸屏按照原理可以分为：电容传感式触摸屏、电阻传感式触摸屏和光学传感式触摸屏等；其中，电容传感式触摸屏又可以包括自电容传感式触摸屏和互电容传感式触摸屏。与互电容传感式触摸屏相比，自电容传感式触摸屏的触控的信噪比较高，触控感应的准确性较高。
发明内容
本发明实施例提供了一种触控模组、触摸屏、其触摸定位方法及显示装置，用以使自电容传感式触摸屏实现多点触控。
本发明实施例提供了一种触控模组，包括：交叉设置且相互绝缘的多条第一触控电极线和多条第二触控电极线；与所述第一触控电极线和所述第二触控电极线交叉设置且相互绝缘的多条第三触控电极线；所述多条第一触控电极线在所述第三触控电极线所在膜层的正投影与所述多条第二触控电极线在所述第三触控电极线所在膜层的正投影的交叉点，位于所述第三触控电极线上。
例如，在本发明实施例提供的上述触控模组中，所述多条第一触控电极线所在膜层、所述多条第二触控电极线所在膜层和所述多条第三触控电极线所在膜层异层设置；上述触控模组还包括：位于所述多条第一触控电极线所在膜层、所述多条第二触控电极线所在膜层和所述多条第三触控电极线所在膜层之间的绝缘层。
例如，在本发明实施例提供的上述触控模组中，所述多条第三触控电极 线位于同一膜层；所述多条第三触控电极线相互平行。
例如，在本发明实施例提供的上述触控模组中，所述多条第一触控电极线在所述多条第三触控电极线所在膜层的正投影与所述多条第二触控电极线在所述多条第三触控电极线所在膜层的正投影的交叉点，分别位于不同的所述第三触控电极线上。
例如，在本发明实施例提供的上述触控模组中，所述多条第三触控电极线位于至少两个膜层上；属于同一膜层的所述多条第三触控电极线相互平行；属于不同膜层的所述多条第三触控电极线交叉设置。
本发明实施例还提供了一种触摸屏，包括：本发明实施例提供的上述触控模组。
例如，在本发明实施例提供的上述触摸屏中，还包括：显示面板；所述显示面板包括相对设置的上基板和下基板；所述触控模组位于所述上基板面向所述下基板的一侧；或者，所述触控模组位于所述下基板面向所述上基板的一侧。
本发明实施例还提供了一种显示装置，包括：本发明实施例提供的上述触摸屏。
本发明实施例还提供了一种触摸屏的触摸定位方法，包括：对多条第一触控电极线和多条第二触控电极线分别加载触控驱动信号；检测所述多条第一触控电极线和所述多条第二触控电极线通过感应电容耦合出的所述触控驱动信号的电压信号是否发生变化；在确定所述多条第一触控电极线的至少两条和所述多条第二触控电极线的至少两条上的电压信号发生变化时，对多条第三触控电极线分别加载触控驱动信号，检测所述多条第三触控电极线通过感应电容耦合出的所述触控驱动信号的电压信号是否发生变化，根据检测出的电压信号发生变化的所述第一触控电极线、所述第二触控电极线和所述第三触控电极线，确定触摸屏的触点位置。
例如，在本发明实施例提供的上述方法中，还包括：在确定仅一条所述多条第一触控电极线和至少一条所述多条第二触控电极线上的电压信号发生 变化，或确定所述多条第一触控电极线的至少一条和所述多条第二触控电极线的仅一条上的电压信号发生变化时，根据检测出的电压信号发生变化的所述第一触控电极线与所述第二触控电极线，确定触摸屏的触点位置。
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为本发明实施例提供的一种触控模组的结构示意图；
图2a和2b为图1沿A’A’方向的剖视图，图2c为图1沿BB方向的剖视图；
图3为本发明实施例提供的另一种触控模组的结构示意图；
图4a为本发明实施例提供的又一种触控模组的结构示意图；
图4b为图4a沿AA方向的剖视图；
图5为本发明实施例提供的触摸屏的触摸定位方法的流程图。
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。
在一种自电容传感式触摸屏中，设置有交叉设置且相互绝缘的多条第一触控电极线和多条第二触控电极线。其确定触点位置的方法为：在对多条第一触控电极线和多条第二触控电极线分别加载触控驱动信号时，分别检测多条第一触控电极线和多条第二触控电极线通过感应电容耦合出的电压信号，在此过程中，有人体接触触摸屏时，人体电场就会作用在感应电容上，使感应电容的电容值发生变化，进而改变对应的第一触控电极线和对应的第二触 控电极线耦合出的电压信号，根据电压信号的变化，就可以确定触点位置。上述方法只能实现单点触控，无法实现多点触控。例如，在检测到两条第一触控电极线和两条第二触控电极线上的电压信号发生变化时，会确定出四个触点位置，这四个触点位置中除了真正的触点外，还可能存在鬼点。
目前，自电容传感式触摸屏一般通过算法实现多点触控，例如，利用两只手指触摸的时间差分辨两只手指的触点位置，或者，利用两个触点分别沿不同的方向移动分辨两个触点的位置。然而，在两只手指触摸的时间差非常小甚至两只手指同时触摸时，或者，在两个触点沿相同的方向移动时，自电容传感式触摸屏无法通过这种算法确定多个触点的位置，从而无法实现多点触控。
因此，如何使自电容传感式触摸屏在任何情况下都能实现多点触控，是本领域技术人员亟需解决的技术问题。
下面结合附图，对本发明实施例提供的触控模组、触摸屏、其触摸定位方法及显示装置的具体实施方式进行详细地说明。附图中各膜层的形状和厚度不反映其真实比例，目的只是示意说明本发明内容。
本发明实施例提供的一种触控模组，如图1和图2所示(图2为图1沿A’A’方向的剖视图)，包括交叉设置且相互绝缘的多条第一触控电极线1和多条第二触控电极线2；该触控模组还包括与第一触控电极线1和第二触控电极线2交叉设置且相互绝缘的多条第三触控电极线3；多条第一触控电极线1在第三触控电极线3所在膜层的正投影与多条第二触控电极线2在第三触控电极线3所在膜层的正投影的交叉点，位于第三触控电极线3上。
本发明实施例提供的上述触控模组，在对多条第一触控电极线和多条第二触控电极线分别加载触控驱动信号时，分别检测多条第一触控电极线和多条第二触控电极线通过感应电容耦合出的电压信号。在检测到多条第一触控电极线的至少两条和多条第二触控电极线的至少两条上的电压信号发生变化时，由该多条第一触控电极线的至少两条和该多条第二触控电极线的至少两条的交叉位置确定的触点中可能存在鬼点，即利用第一触控电极线和第二触 控电极线无法准确确定触点的位置。此时，需要对多条第三触控电极线加载触控驱动信号，并检测多条第三触控电极线通过感应电容耦合出的电压信号。由于多条第一触控电极线在第三触控电极线所在膜层的正投影与多条第二触控电极线在第三触控电极线所在膜层的正投影的交叉点位于第三触控电极线上，因此，通过各个交叉点的坐标以及第三触控电极线与第一触控电极线(或第二触控电极线)之间的夹角即可计算多条第三触控电极线的坐标，从而根据检测出的电压信号发生变化的第一触控电极线、第二触控电极线和第三触控电极线，即，可准确确定触点的位置。并且，在本发明的实施例中，无需通过算法来确定多个触点的位置，从而可以使触摸屏在任何情况下都能实现多点触控，以使触摸屏能够实现缩放、平移和旋转等操作。
例如，在本发明实施例提供的上述触控模组中，多条第一触控电极线所在膜层、多条第二触控电极线所在膜层和多条第三触控电极线所在膜层可以同层设置。如图2a所示，通过在第二触控电极线2和第三触控电极线3之间设置绝缘垫，多条第二触控电极线2所在膜层和多条第三触控电极线3所在膜层可以同层设置；或者，如图2b所示，多条第一触控电极线1所在膜层、多条第二触控电极线2所在膜层和多条第三触控电极线3所在膜层也可以异层设置，在此不做限定，只需保证多条第一触控电极线、多条第二触控电极线和多条第三触控电极线相互绝缘即可。图2c是图1沿BB线方向的剖视图。
例如，在本发明实施例提供的上述触控模组中，如图2b所示，在多条第一触控电极线1所在膜层、多条第二触控电极线2所在膜层和多条第三触控电极线3所在膜层异层设置时，还可以包括：位于多条第一触控电极线1所在膜层、多条第二触控电极线2所在膜层和多条第三触控电极线3所在膜层之间的绝缘层4。例如，如图2b所示，在多条第一触控电极线1所在膜层与多条第二触控电极线2所在膜层之间设置有绝缘层4，在多条第二触控电极线2所在膜层与多条第三触控电极线3所在膜层之间也设置有绝缘层4。
例如，在本发明实施例提供的上述触控模组中，如图1和图2a、2c所示，多条第三触控电极线3位于同一膜层，多条第三触控电极线3相互平行。例 如，在对多条第一触控电极线1和多条第二触控电极线2分别加载触控驱动信号时，分别检测多条第一触控电极线1和多条第二触控电极线2通过感应电容耦合出的电压信号，在人体同时接触A点和B点时，可以检测到第一触控电极线a、第一触控电极线b、第二触控电极线c和第二触控电极线d上的电压信号发生变化。由第一触控电极线a、第一触控电极线b、第二触控电极线c和第二触控电极线d可以确定四个触点A、B、C和D，该四个触点中存在两个鬼点。对多条第三触控电极线3加载触控驱动信号，并检测多条第三触控电极线3通过感应电容耦合出的电压信号，可以检测到第三触控电极线f上的电压信号发生变化，因此，第三触控电极线f、第一触控电极线a和第二触控电极线d的交叉位置A以及第三触控电极线f、第一触控电极线b和第二触控电极线c的交叉位置B即为真实的触点。而第三触控电极线e和第三触控电极线g上的电压信号均没有发生变化，第三触控电极线e、第一触控电极线a和第二触控电极线c的交叉位置C以及第三触控电极线g、第一触控电极线b和第二触控电极线d的交叉位置D均为鬼点，从而可以准确排除鬼点，准确确定触点的位置。
需要说明的是，对于两点触控，如图1和图2a-c所示的触控模组可以准确地确定两个触点的位置，然而，对于三点触控甚至更多点触控的情形，如图1和图2a-c所示的触控模组，则所确定的触点中仍可能存在鬼点。例如，在对多条第一触控电极线1和多条第二触控电极线2分别加载触控驱动信号时，分别检测多条第一触控电极线1和多条第二触控电极线2通过感应电容耦合出的电压信号，在人体同时接触A点、B点和E点时，可以检测到第一触控电极线a、第一触控电极线b、第一触控电极线h、第二触控电极线c和第二触控电极线d上的电压信号发生变化，由第一触控电极线a、第一触控电极线b、第一触控电极线h、第二触控电极线c和第二触控电极线d可以确定六个触点A、B、C、D、E和F，该六个触点中存在三个鬼点。对多条第三触控电极线3加载触控驱动信号，并检测多条第三触控电极线3通过感应电容耦合出的电压信号，可以检测到第三触控电极线f和第三触控电极线g上的电 压信号发生变化，在第三触控电极线f、第一触控电极线a和第二触控电极线d的交叉位置A，第三触控电极线f、第一触控电极线b和第二触控电极线c的交叉位置B，第三触控电极线g、第一触控电极线b和第二触控电极线d的交叉位置D，以及第三触控电极线g、第一触控电极线h和第二触控电极线c的交叉位置E中，如图1和图2a-c所示的触控模组无法确定D点为鬼点。
基于此，本发明实施例提供的上述触控模组，如图3所示，多条第一触控电极线1在多条第三触控电极线3所在膜层的正投影与多条第二触控电极线2在多条第三触控电极线3所在膜层的正投影的交叉点，可以分别位于不同的第三触控电极线3上，即多条第一触控电极线1在多条第三触控电极线3所在膜层的正投影与多条第二触控电极线2在多条第三触控电极线3所在膜层的正投影的交叉点，与第三触控电极线3一一对应。这样，无论对于两点触控，还是三点触控甚至更多点触控，如图3所示的触控模组都可以通过检测第三触控电极线3上的电压信号的变化，准确排除鬼点，准确确定触点的位置。
需要说明的是，在如图3所示的触控模组中，第三触控电极线的数量较多，使得触控模组的制作工艺的难度增大，并且，对于第三触控电极线的制作工艺的精度的要求较高。
基于此，本发明实施例提供的上述触控模组，如图4a和4b所示，多条第三触控电极线3位于至少两个膜层(图4b以多条第三触控电极线位于两个膜层为例)，属于同一膜层的第三触控电极线3相互平行，属于不同膜层的第三触控电极线3交叉设置。例如，在对多条第一触控电极线1和多条第二触控电极线2分别加载触控驱动信号时，分别检测多条第一触控电极线1和多条第二触控电极线2通过感应电容耦合出的电压信号，在人体同时接触A点、B点和E点时，可以检测到第一触控电极线a、第一触控电极线b、第一触控电极线h、第二触控电极线c和第二触控电极线d上的电压信号发生变化，由第一触控电极线a、第一触控电极线b、第一触控电极线h、第二触控电极线c和第二触控电极线d可以确定六个触点A、B、C、D、E和F，该六个触点 中存在三个鬼点。对第一层中的多条第三触控电极线3(例如图4中的e、f、g)加载触控驱动信号，并检测第一层中的多条第三触控电极线3通过感应电容耦合出的电压信号，可以检测到第三触控电极线f和第三触控电极线g上的电压信号发生变化，由第一触控电极线a、第一触控电极线b、第一触控电极线h、第二触控电极线c、第二触控电极线d、第三触控电极线f和第三触控电极线g可以确定四个触点A、B、D和E，该四个触点中存在一个鬼点；对第二层中的多条第三触控电极线3(例如图4中的i、j、k、m)加载触控驱动信号，并检测第二层中的多条第三触控电极线3通过感应电容耦合出的电压信号，可以检测到第三触控电极线i、第三触控电极线j和第三触控电极线m上的电压信号发生变化，第三触控电极线k上的电压信号没有发生变化，从而可以排除鬼点D，确定A、B和E为真实的触点。
需要说明的是，在如图4所示的触控模组中，可以在第三触控电极线的两个膜层之间设置绝缘层，以保证位于不同膜层的第三触控电极线相互绝缘。
基于同一发明构思，本发明实施例还提供了一种触摸屏，该触摸屏包括本发明实施例提供的上述触控模组。该触摸屏的实施可以参见上述触控模组的实施例，重复之处不再赘述。
例如，在本发明实施例提供的上述触摸屏中，还可以包括显示面板。该显示面板可以包括相对设置的上基板和下基板；触控模组可以位于上基板面向下基板的一侧，或者，触控模组也可以位于下基板面向上基板的一侧，在此不做限定，即本发明实施例提供的上述触摸屏为内嵌式触摸屏。
具体地，本发明实施例提供的上述触摸屏可以应用于液晶显示面板(Liquid Crystal Display,LCD)、有机电致发光显示面板(Organic Electroluminescent Display,OELD)和等离子显示面板(Plasma Display Panel,PDP)等平板显示面板中的任意一种，在此不做限定。以本发明实施例提供的上述触摸屏应用于LCD为例进行说明，触控模组可以位于LCD中的对向基板面向阵列基板的一侧，或者，触控模组也可以位于LCD中的阵列基板面向对向基板的一侧，在此不做限定。
当然，本发明实施例提供的上述触摸屏并非局限于内嵌式触摸屏，也可以为表面式触摸屏；或者，还可以为外挂式触摸屏，在此不做限定。此时，触控模组位于显示面板的显示侧之上，同样该显示面板可以为LCD、OELD、PDP等平板显示面板中的任意一种。
本发明实施例还提供了一种显示装置，包括：本发明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、导航仪等任何具有显示功能的产品或部件。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。
针对本发明实施例提供的上述触摸屏，本发明实施例还提供了一种触摸屏的触摸定位方法，如图5所示，包括如下步骤：
S501：对多条第一触控电极线和多条第二触控电极线分别加载触控驱动信号；
S502：检测多条第一触控电极线和多条第二触控电极线通过感应电容耦合出的触控驱动信号的电压信号是否发生变化；在确定多条第一触控电极线的至少两条和多条第二触控电极线的至少两条上的电压信号发生变化时，执行步骤S503；
S503：对多条第三触控电极线分别加载触控驱动信号，检测多条第三触控电极线通过感应电容耦合出的触控驱动信号的电压信号是否发生变化，根据检测出的电压信号发生变化的第一触控电极线、第二触控电极线和第三触控电极线，确定触摸屏的触点位置。
例如，在本发明实施例提供的上述方法中，如图5所示，在确定多条第一触控电极线的仅一条和多条第二触控电极线的至少一条上的电压信号发生变化，或确定多条第一触控电极线的至少一条和多条第二触控电极线的仅一条上的电压信号发生变化时，执行步骤S504；
S504：根据检测出的电压信号发生变化的第一触控电极线与第二触控电极线，确定触摸屏的触点位置。在确定多条第一触控电极线的仅一条和多条第二触控电极线的至少一条上的电压信号发生变化，或确定多条第一触控电 极线的至少一条和多条第二触控电极线的仅一条上的电压信号发生变化时，仅通过第一触控电极线和第二触控电极线即可准确确定真实触点的位置，无需对第三触控电极线加载触控驱动信号，这样，可以降低触摸屏的功耗。
本发明实施例提供的一种触控模组、触摸屏、其触摸定位方法及显示装置，由于在触控模组中增加设置与第一触控电极线和第二触控电极线交叉设置且相互绝缘的多条第三触控电极线，且多条第一触控电极线在第三触控电极线所在膜层的正投影与多条第二触控电极线在第三触控电极线所在膜层的正投影的交叉点位于第三触控电极线上；这样，在利用第一触控电极线和第二触控电极线无法准确确定多个触点的位置时，通过增加设置的第三触控电极线可以排除鬼点，从而可以准确确定多个触点的位置；并且，无需通过算法来确定多个触点的位置，从而可以使触摸屏在任何情况下都能实现多点触控。
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2015年7月20日递交的中国专利申请第201510427884.3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 (11)

  1. 一种触控模组，包括：
    交叉设置且相互绝缘的多条第一触控电极线和多条第二触控电极线，
    与所述第一触控电极线和所述第二触控电极线交叉设置且相互绝缘的多条第三触控电极线；
    其中，所述多条第一触控电极线在所述第三触控电极线所在膜层的正投影与所述多条第二触控电极线在所述第三触控电极线所在膜层的正投影的交叉点，位于所述第三触控电极线上。
  2. 如权利要求1所述的触控模组，其中，所述多条第一触控电极线所在膜层、所述多条第二触控电极线所在膜层和所述多条第三触控电极线所在膜层异层设置。
  3. 如权利要求2所述的触控模组，还包括：位于所述多条第一触控电极线所在膜层、所述多条第二触控电极线所在膜层和所述多条第三触控电极线所在膜层之间的绝缘层。
  4. 如权利要求1-3的任一项所述的触控模组，其中，所述多条第三触控电极线位于同一膜层；
    所述多条第三触控电极线相互平行。
  5. 如权利要求1-4的任一项所述的触控模组，其中，所述多条第一触控电极线在所述多条第三触控电极线所在膜层的正投影与所述多条第二触控电极线在所述多条第三触控电极线所在膜层的正投影的交叉点，分别位于不同的所述第三触控电极线上。
  6. 如权利要求1-3的任一项所述的触控模组，其中，所述多条第三触控电极线位于至少两个膜层；
    属于同一膜层的所述第三触控电极线相互平行；属于不同膜层的所述第三触控电极线交叉设置。
  7. 一种触摸屏，包括：如权利要求1-5任一项所述的触控模组。
  8. 如权利要求7所述的触摸屏，还包括显示面板；
    其中，所述显示面板包括相对设置的上基板和下基板；
    所述触控模组位于所述上基板面向所述下基板的一侧；或者，所述触控模组位于所述下基板面向所述上基板的一侧。
  9. 一种显示装置，包括：如权利要求6或7所述的触摸屏。
  10. 一种如权利要求7或8所述的触摸屏的触摸定位方法，包括：
    对多条第一触控电极线和多条第二触控电极线分别加载触控驱动信号；
    检测所述多条第一触控电极线和所述多条第二触控电极线通过感应电容耦合出的所述触控驱动信号的电压信号是否发生变化；
    在确定所述多条第一触控电极线的至少两条和所述多条第二触控电极线的至少两条上的电压信号发生变化时，对多条第三触控电极线分别加载触控驱动信号，检测所述多条第三触控电极线通过感应电容耦合出的所述触控驱动信号的电压信号是否发生变化，根据检测出的电压信号发生变化的所述第一触控电极线、所述第二触控电极线和所述第三触控电极线，确定触摸屏的触点位置。
  11. 如权利要求10所述的方法，还包括：
    在确定所述多条第一触控电极线的仅一条和所述多条第二触控电极线的至少一条上的电压信号发生变化，或确定所述多条第一触控电极线的至少一条和所述多条第二触控电极线的仅一条上的电压信号发生变化时，根据检测出的电压信号发生变化的所述第一触控电极线与所述第二触控电极线，确定触摸屏的触点位置。
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