WO2021139723A1 - 触控面板及显示装置 - Google Patents

触控面板及显示装置 Download PDF

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Publication number
WO2021139723A1
WO2021139723A1 PCT/CN2021/070660 CN2021070660W WO2021139723A1 WO 2021139723 A1 WO2021139723 A1 WO 2021139723A1 CN 2021070660 W CN2021070660 W CN 2021070660W WO 2021139723 A1 WO2021139723 A1 WO 2021139723A1
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WO
WIPO (PCT)
Prior art keywords
touch
electrode
electrodes
layer
dummy
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Application number
PCT/CN2021/070660
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English (en)
French (fr)
Inventor
张贵玉
罗鸿强
张光均
蒋宜辰
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Priority to US17/777,778 priority Critical patent/US20220413677A1/en
Publication of WO2021139723A1 publication Critical patent/WO2021139723A1/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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
    • 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
    • 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
    • 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Definitions

  • the present disclosure relates to the field of touch display technology, and in particular to a touch panel and a display device.
  • a touch panel is generally used in combination with a display panel.
  • a plurality of touch electrodes are provided in the touch panel, and the touch position of the user can be detected through the touch electrodes.
  • touch drift or touch failure may occur. Response to the situation.
  • the touch panel provided by the implementation of the present disclosure includes:
  • the touch electrode layer is located on the base substrate; the touch electrode layer includes: a plurality of touch electrodes and a plurality of dummy electrodes; the dummy electrodes are insulated from the touch electrodes; the touch At least part of the dummy electrodes in the electrode layer are grounded.
  • it further includes: a conductive connection layer located between the base substrate and the touch electrode layer, and a conductive connection layer located between the conductive connection layer and the touch electrode layer ⁇ Insulation layer;
  • the conductive connection layer includes: a dummy electrode lead that is grounded;
  • the insulating layer includes: a plurality of first through holes
  • At least part of the dummy electrode in the touch electrode layer is coupled to the dummy electrode lead through the first through hole.
  • At least part of the touch electrodes have a hollowed-out area, and the dummy electrode is located in the hollowed-out area.
  • the geometric center of the virtual electrode and the geometric center of the hollow area coincide.
  • the touch electrode is divided into a first electrode and a second electrode that are insulated and arranged crosswise;
  • the first electrode includes: a plurality of first sub-electrodes arranged along a first direction; the conductive connection layer further includes: a plurality of bridge electrodes; the insulating layer further includes: a plurality of second through holes; In an electrode, two adjacent first sub-electrodes are coupled to the bridge electrode through the second through hole;
  • the second electrode includes: a plurality of second sub-electrodes arranged in a second direction, the first direction and the second direction intersect each other; the touch electrode layer further includes: a plurality of connecting portions; the In the second electrode, two adjacent second sub-electrodes are coupled by the connecting portion;
  • the first sub-electrode has the hollow area.
  • the second sub-electrode has the hollow area.
  • the edge of the first sub-electrode has a plurality of first convex structures
  • the edge of the second sub-electrode has a plurality of second convex structures
  • the first protruding structure and the second protruding structure are arranged in a staggered manner.
  • the edge of the dummy electrode has a plurality of third convex structures, and the hollow area has a plurality of concave structures;
  • the third convex structure is located in the concave structure.
  • the first electrode is a touch driving electrode
  • the second electrode is a touch sensing electrode
  • the first electrode is a touch sensing electrode
  • the second electrode is a touch driving electrode
  • the shape and size of each of the virtual electrodes are the same.
  • the plurality of dummy electrodes in the touch electrode layer are arranged in an array in a first direction and a second direction; the first direction and the second direction Cross each other
  • a plurality of the dummy electrode leads are provided in the conductive connection layer, and the plurality of dummy electrode leads extend along the first direction and are arranged along the second direction; the dummy electrode leads are connected to the first A row of the dummy electrodes arranged in the direction is coupled.
  • the conductive connection layer further includes: a conductive connection line extending along the second direction;
  • the conductive connecting wire is coupled to at least two adjacent dummy electrode leads.
  • two conductive connection lines are provided in the conductive connection layer
  • a part of the dummy electrode lead in the conductive connection layer is coupled to one of the conductive connection lines, and the other part of the dummy electrode lead is coupled to the other conductive connection line.
  • one conductive connection line is provided in the conductive connection layer
  • Each of the dummy electrode leads in the conductive connection layer is coupled to the conductive connection line.
  • it further includes: a display module located between the base substrate and the touch electrode layer, and a display module located on the side of the display module close to the touch electrode layer
  • a display module located between the base substrate and the touch electrode layer
  • a display module located on the side of the display module close to the touch electrode layer
  • an embodiment of the present disclosure also provides a display device, which includes any of the above-mentioned touch panels.
  • it further includes: a flexible circuit board;
  • the flexible circuit board includes a ground terminal, and at least part of the dummy electrodes in the touch electrode layer is coupled to the ground terminal.
  • the conductive connection layer includes: a dummy electrode lead and a conductive connection line; the dummy electrode is coupled to the dummy electrode lead, and the conductive connection line is connected to at least two adjacent electrodes.
  • the dummy electrode lead is coupled;
  • the conductive connecting wire is coupled to the ground terminal in the flexible circuit board.
  • FIG. 1 is a schematic diagram of the comparison of the touch effect of the touch device under the weak ground state in the ideal condition and the actual condition in the related art
  • FIG. 2 is a schematic cross-sectional view of a touch panel in an embodiment of the disclosure
  • FIG. 3 is a schematic diagram of a planar structure of a touch panel provided by an embodiment of the disclosure.
  • FIG. 4 is a partial enlarged schematic diagram of the touch panel shown in FIG. 3;
  • FIG. 5 is a schematic diagram of another planar structure of a touch panel provided by an embodiment of the disclosure.
  • FIG. 6 is a partial enlarged schematic diagram of the touch panel shown in FIG. 5;
  • FIG. 7 is a schematic diagram of another planar structure of a touch panel provided by an embodiment of the disclosure.
  • FIG. 8 is a schematic diagram of another planar structure of a touch panel provided by an embodiment of the disclosure.
  • FIG. 9 is another schematic cross-sectional view of the touch panel in the embodiment of the disclosure.
  • the distance between the user's finger and the touch layer, and the touch layer and the display layer is relatively large.
  • the touch signal is affected Smaller, the touch position output by the touch chip is more accurate.
  • touch devices have become thinner and lighter.
  • OLED Organic Light-Emitting Diode
  • FMLOC On Cell
  • Figure 1 is a schematic diagram showing the comparison of touch effects between ideal and actual conditions of a touch device in a weakly grounded state in related technologies.
  • Figure 1 uses a mutual capacitance touch structure for the touch device as an example for illustration, that is, the touch device includes
  • the principles of multiple touch driving electrodes Tx and multiple touch sensing electrodes Rx are similar to the principle of using other types of touch structures in the touch device, and will not be illustrated one by one here.
  • the touch device when the touch device is in a weakly grounded state, such as when the touch device is located on an insulated desktop or when the user lies on a bed and uses the touch device, if the contact area Q between the user's finger and the touch device is For example, when the user’s finger is large or multiple fingers touch the same touch drive electrode Tx (or touch sensing electrode Rx) at the same time, ideally, the touch signal strength detected by the touch sensing electrode Rx should be Focus on the center position of the contact area Q, so that the touch chip outputs a coordinate of the touch position q.
  • FIG. 2 is a schematic cross-sectional view of the touch panel in the embodiment of the present disclosure.
  • the touch panel provided by the embodiment of the present disclosure is shown in FIG. Can include:
  • the touch electrode layer 2 is located on the base substrate 10; the touch electrode layer 2 includes: a plurality of touch electrodes 21 and a plurality of dummy electrodes 22; the dummy electrodes 22 are insulated from the touch electrodes 21; the touch electrode layer 2 At least a part of the dummy electrode 22 in is grounded.
  • the setting of the dummy electrodes 22 can be Increase the touch area so that more sensing areas can sensitively sense the user's touch behavior, thereby improving the sensitivity of touch.
  • the touch panel when used in a weakly grounded situation (such as when the touch panel is placed on a table or the user is lying on a bed, etc.), since at least part of the virtual electrodes 22 in the touch electrode layer 2 are grounded, the touch When the control panel is used in a weakly grounded situation, the charge between the touch electrodes 21 can be transferred to the virtual electrode 22 through the fingers. Since the virtual electrode 22 is grounded, the charge between the touch electrodes 21 can be well transferred to the ground. Therefore, the touch electrode 21 can also detect a stronger signal, and the touch chip can output a more accurate touch position, which improves the user's touch experience.
  • the touch panel may further include: a conductive connection layer 1 located between the base substrate 10 and the touch electrode layer 2, and a conductive connection layer 1 The insulating layer 3 between the touch electrode layer 2 and the touch electrode layer 2;
  • the conductive connection layer 1 includes: a dummy electrode lead 11 arranged in the ground;
  • the insulating layer 3 includes: a plurality of first through holes V1;
  • At least part of the dummy electrode 22 in the touch electrode layer 2 is coupled to the dummy electrode lead 11 through the first through hole V1.
  • the virtual electrode 22 is coupled to the virtual electrode lead 11 through the first through hole V1 in the insulating layer 3. Since the virtual electrode lead 11 is grounded, the grounding of the virtual electrode 22 is realized, and the touch control is reduced. Number of leads in electrode layer 2.
  • the conductive connection layer 1 is disposed on the side of the touch electrode layer 2 close to the base substrate 10, so that the distance between the touch electrode layer 2 and the touch surface of the touch panel can be closer, so that more sensitive detection can be achieved. As far as the user's touch behavior is concerned, the touch effect is better.
  • the conductive connection layer 1 may also be disposed on the side of the touch electrode layer 2 away from the base substrate 10, which is not limited here.
  • FIG. 3 is a schematic diagram of a plan structure of a touch panel provided by an embodiment of the present disclosure
  • FIG. 4 is a partial enlarged schematic diagram of FIG. 3, as shown in FIGS. 3 and 4, at least part of the touch electrodes 21 have In the hollowed-out area 01, the virtual electrode 22 is located in the hollowed-out area 01.
  • the geometric center of the virtual electrode 22 may coincide with the geometric center of the hollow area 01.
  • the touch electrode 21 is divided into a first electrode 211 and a second electrode 212 that are insulated and arranged crosswise.
  • the touch electrode 21 in the embodiment of the present disclosure has a mutual capacitance structure.
  • the touch electrode 21 may also adopt a self-capacitance structure, which is not limited here.
  • the first electrode 211 includes: a plurality of first sub-electrodes 211a arranged along the first direction F1; the conductive connection layer 1 further includes: a plurality of bridge electrodes 12; the insulating layer 3 further includes: a plurality of second through holes V2; Among the electrodes 211, two adjacent first sub-electrodes 211a are coupled to the bridge electrode 12 through the second through hole V2;
  • the second electrode 212 includes: a plurality of second sub-electrodes 212a arranged along the second direction F2, the first direction F1 and the second direction F2 cross each other; the touch electrode layer 2 also includes: a plurality of connecting portions 212b; the second electrode In 212, two adjacent second sub-electrodes 212a are coupled by a connecting portion 212b;
  • the bridging electrode 12 is provided in the conductive connection layer 1, and two adjacent first sub-electrodes 211a can be coupled to the bridging electrode 12 through the second through hole V2, and further, the first electrode 211 can be The first sub-electrodes 211a are coupled to each other, and the bridge electrode 12 and the dummy electrode lead 11 are located in the same film layer.
  • the bridge electrode 12 and the dummy electrode lead 11 can be manufactured by one patterning process, which saves manufacturing cost.
  • two adjacent second sub-electrodes 212a can be coupled through the connecting portion 212b, so that the second sub-electrodes 212a in the second electrode 212 can be coupled to each other.
  • the first electrode 211 and the second electrode 212 can be manufactured in the same touch electrode layer 2, which can reduce the manufacturing process and reduce the cost.
  • the first sub-electrodes in the first electrode are coupled to each other through the bridge electrode, and the second sub-electrodes in the second electrode are coupled to each other through the connecting portion as an example.
  • the first sub-electrodes in the first electrode are coupled to each other through the connecting portion, and the second sub-electrodes in the second electrode are coupled to each other through the bridge electrode, which is not limited here.
  • the first sub-electrode 211a has a hollow area 01.
  • the dummy electrode 22 can be arranged in the hollow area 01.
  • the ground capacitance of the first electrode 211 is reduced, and the power consumption of the touch panel is reduced.
  • the electric charge between the touch electrodes 21 can pass through the fingers. It is transmitted to the virtual electrode 22. Since the virtual electrode 22 is grounded, the charge between the touch electrodes 21 can be well transmitted to the ground. Therefore, the touch electrode 21 can also detect a strong signal amount, and the touch output of the touch chip The control position is more accurate, which improves the user's touch experience.
  • FIG. 5 is a schematic diagram of another plane structure of the touch panel provided by the embodiment of the present disclosure
  • FIG. 6 is a diagram In the partial enlarged schematic view of 5, the second sub-electrode 212 also has a hollow area 01. In this way, the ground capacitance of the second electrode 212 can be reduced, and the power consumption of the touch panel can be further reduced.
  • first sub-electrode 211a and the second sub-electrode 212a both have a hollow area 01, so that the entire touch panel can be arranged in the hollow
  • the virtual electrodes 22 in area 01 are more uniform, each touch position in the touch panel can detect a stronger signal, and each touch position of the entire touch panel will not have multi-point false alarms, which is further improved User touch experience.
  • touch panel provided by the embodiment of the present disclosure, as shown in FIG. 3 and FIG. 5, it may further include: touch electrode lead 02, which connects the touch electrode 21 and the touch Chip coupling.
  • the edge of the first sub-electrode 211a has a plurality of first protrusions.
  • the edge of the second sub-electrode 212a has a plurality of second protruding structures 002;
  • the first protruding structure 001 and the second protruding structure 002 are arranged in a staggered manner.
  • edges of the first sub-electrode 211a and the second sub-electrode 212a are arranged in a sawtooth structure, which can reduce the square resistance of the first electrode 211 and the second electrode 212, thereby reducing the power consumption of the touch panel.
  • the edge of the dummy electrode 22 has a plurality of third convex structures 003, the hollow area 01 has a plurality of recessed structures 004;
  • the third protruding structure 003 is located in the recessed structure 004.
  • edges of the dummy electrode 22 and the hollow area 01 are arranged in a sawtooth structure, which can reduce the square resistance of the dummy electrode 22 and further reduce the power consumption of the touch panel.
  • the above-mentioned saw-tooth structure is not necessarily a regular saw-tooth structure, as long as the edge has a tooth-like structure.
  • the geometric center of the virtual electrode 22 and the first sub-electrode 211a coincide.
  • the geometric center of the virtual electrode 22 in the first sub-electrode 211a coincides with the combination center of the first sub-electrode 211a
  • the geometric center of the virtual electrode 22 in the second sub-electrode 212a coincides with the geometric center of the second sub-electrode 212a.
  • the geometric center of the virtual electrode and the geometric center of the first sub-electrode (or the second sub-electrode) may or may not overlap, as long as the virtual electrode and the touch electrode are insulated.
  • the first electrode is a touch driving electrode
  • the second electrode is a touch sensing electrode
  • the first electrode is a touch sensing electrode
  • the second electrode is a touch driving electrode
  • each dummy electrode 22 are the same.
  • the shape and size of each dummy electrode 22 may also be different.
  • FIG. 7 is a schematic diagram of another planar structure of the touch panel provided by the embodiments of the present disclosure.
  • the touch electrodes are omitted in the figure, as shown in FIG. 7 ,
  • the plurality of dummy electrodes 22 in the touch electrode layer are arranged in an array in the first direction F1 and the second direction F2; the first direction F1 and the second direction F2 cross each other;
  • a plurality of dummy electrode leads 11 are provided in the conductive connection layer, and the plurality of dummy electrode leads 11 extend along the first direction F1 and are arranged along the second direction F2; the dummy electrode leads 11 are aligned with a row in the first direction F1 The dummy electrode 22 is coupled.
  • each dummy electrode lead 11 is coupled to a row of dummy electrodes 22 arranged in the first direction F1
  • the virtual electrodes 22 in the touch electrode layer can also be arranged in other arrangements, which are not limited here.
  • the above-mentioned conductive connection layer may further include: a conductive connection line 13 extending along the second direction F2; the conductive connection line 13 is coupled to at least two adjacent dummy electrode leads 11.
  • the touch panel can be coupled to the flexible circuit board Fp, and a ground signal is provided to each virtual electrode 22 through a ground terminal (Gn1 or Gn2 in FIG. 7) in the flexible circuit board Fp.
  • Each dummy electrode lead 11 coupled to the conductive connecting wire 13 can be coupled to the same ground terminal in the flexible circuit board Fp, which reduces the number of leads connected to the ground terminal and facilitates wiring.
  • two conductive connecting lines 13 may be provided in the above-mentioned conductive connecting layer; a part of the dummy electrode leads 11 in the conductive connecting layer is coupled to one of the conductive connecting lines 13, and the other part of the dummy electrode
  • the lead 11 is coupled to another conductive connecting wire 13.
  • half of the dummy electrode leads 11 arranged in a row are coupled to a conductive connecting line 13 and coupled to the first ground terminal Gn1 in the flexible circuit board Fp
  • the other half of the dummy electrode leads 11 arranged in a row are coupled to the first ground terminal Gn1 in the flexible circuit board Fp.
  • the lead 11 is coupled to another conductive connecting wire 13 and is coupled to the second ground terminal Gn2 in the flexible circuit board Fp.
  • FIG. 8 is a schematic diagram of another planar structure of the touch panel provided by the embodiments of the disclosure.
  • the touch electrodes are omitted in the figure, as shown in FIG. 8 ,
  • a conductive connecting wire 13 is provided in the conductive connecting layer; each dummy electrode lead 11 in the conductive connecting layer is coupled to the conductive connecting wire 13. In this way, all the dummy electrode leads 11 are coupled to the same ground terminal Gn in the flexible circuit board Fp.
  • one or two conductive connection lines are provided in the conductive connection layer as an example. In specific implementation, more conductive connection lines may also be provided in the conductive connection layer, which is not limited here.
  • FIG. 9 is another schematic cross-sectional view of the touch panel in the embodiment of the present disclosure.
  • the above-mentioned touch panel provided by the embodiment of the present disclosure may further include: located on the base substrate 10 and the touch electrode layer 2
  • the display module 6 in between, the encapsulation layer 7 on the side of the display module 6 close to the touch electrode layer 2, the polarizer 3 on the side of the touch electrode layer 2 away from the encapsulation layer, and the touch electrode layer 2 near the polarizer
  • the protective layer 4 on the side of the sheet 3 and the cover plate 5 on the side of the polarizer 3 away from the touch electrode layer 2.
  • the above-mentioned display module 6 may be an organic electroluminescent diode display panel.
  • the display module 6 may include an anode, a cathode, and a light-emitting layer located between the anode and the cathode. Signal, control the light-emitting layer to emit light.
  • the above-mentioned polarizer 3 may be a circular polarizer, which can reduce the reflectivity of external light and improve the display effect of the display module 6.
  • the protective layer 4 has the function of protecting the touch electrode layer 2 and the conductive connection layer 1.
  • the material of the protective layer 5 may be silicon oxynitride.
  • the cover 5 can protect the internal structure of the touch panel.
  • the display module 6 can also be other types of display panels, which are not limited here.
  • the touch panel provided by the embodiments of the present disclosure may be a touch panel with only a touch function, or a touch display panel with a display function.
  • embodiments of the present disclosure also provide a display device, including any of the above-mentioned touch panels provided by the embodiments of the present disclosure.
  • the implementation of the display device can be referred to the embodiment of the above-mentioned touch panel, and the repetition will not be repeated.
  • the display device may further include: a flexible circuit board Fp.
  • the flexible circuit board Fp includes a ground terminal.
  • the board Fp includes a first ground terminal Gn1 and a second ground terminal Gn2.
  • the flexible circuit board Fp includes a ground terminal Gn.
  • At least part of the dummy electrode 22 in the touch electrode layer is coupled to the ground terminal. In this way, the grounding signal can be provided to each dummy electrode 22 through the grounding terminal in the flexible circuit board Fp, so that the grounding of the dummy electrode 22 can be realized.
  • the conductive connection layer may include: a dummy electrode lead 11 and a conductive connection line 13; the dummy electrode 22 is coupled to the dummy electrode lead 11, and the conductive connection line 13 It is coupled to at least two adjacent dummy electrode leads 11; the conductive connecting wire 13 is coupled to the ground terminal in the flexible circuit board Fp.
  • the dummy electrode lead 11 and the conductive connecting wire 13 the dummy electrode 22 can be connected to the ground terminal of the flexible circuit board Fp.
  • connection mode of the dummy electrode lead is not limited to FIG. 8 and FIG. 9, and it can also be electrically connected to more ground terminals, which all fall within the protection scope of the present disclosure.
  • the display device in the embodiment of the present disclosure in order to verify that setting the virtual electrode to ground can improve the touch effect, is placed in a weakly grounded state for use, and the virtual electrode is set to ground and the virtual electrode is set to ground.
  • the floating setting no signal is applied to the virtual electrode
  • Table 1 The floating setting (no signal is applied to the virtual electrode) is simulated and the simulation data obtained is shown in Table 1:
  • the virtual electrode is a floating setting Virtual electrode is set to ground Cp(Tx_unit) 10.864 10.688 Cp(Rx_unit) 11.092 10.876 Cm(w/o finger) 0.644 0.640 Cm1(w/finger) 0.484 0.456 ⁇ Cm(Cm-Cm1) 0.16 0.184 ⁇ Cm/Cm 24.84% 28.75% Cp(Tx_finger) 0.988 0.856 Cp(Rx_finger) 1.008 0.882 LGM index 0.321 0.424
  • Cp (Tx_unit) is the capacitance to ground of the touch drive electrode
  • Cp (Rx_unit) is the capacitance to ground of the touch sensing electrode
  • Cm (w/o finger) is the capacitance between the touch electrodes when there is no finger touch.
  • Cm1 (w finger) is the coupling capacitance between the touch electrode and the finger when there is a finger touch
  • Cp (Tx_finger) is the coupling capacitance between the touch drive electrode and the finger
  • Cp (Rx_finger) is the coupling capacitance between the touch sensing electrode and the finger. Coupling capacitance between.
  • the display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and so on.
  • the setting of the virtual electrodes can be increased when the touch panel is used under normal grounding conditions. Touch area, so that more sensing areas can sensitively sense the user's touch behavior, thereby improving the sensitivity of touch; when the touch panel is weakly grounded (such as the touch panel is placed on the desktop or the user is lying In bed, etc.) in use, because at least part of the virtual electrodes in the touch electrode layer are grounded, so when the touch panel is used in a weakly grounded situation, the charge between the touch electrodes can be transferred to the virtual electrodes through the fingers.
  • the virtual electrode is grounded, so the charge between the touch electrodes can be well transferred to the ground. Therefore, the touch electrodes can also detect strong signals, and the touch chip can output more accurate touch positions. Improve user touch experience.

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Abstract

本公开提供了一种触控面板及显示装置，触控面板包括：衬底基板及触控电极层；触控电极层包括：多个触控电极和多个虚拟电极；虚拟电极与触控电极绝缘设置；触控电极层中的至少部分虚拟电极接地设置。通过在触控电极层设置与触控电极绝缘的虚拟电极，可以增大触控区域，使更多的感应区域能灵敏的感应到用户的触控行为，从而提高触控的灵敏度；在触控显示产品处于弱接地情况下使用时，触控电极之间的电荷可以通过手指传递至虚拟电极，由于虚拟电极接地，因此触控电极之间的电荷可以很好的传递至大地，故对于触控电极来说同样可以侦测到较强信号量，触控芯片能够输出较准确的触控位置，提高用户使用体验。

Description

触控面板及显示装置
相关申请的交叉引用
本申请要求在2020年01月09日提交中国专利局、申请号为202010021548.X、申请名称为“一种触控面板及显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及触控显示技术领域，尤其涉及一种触控面板及显示装置。
背景技术
触控面板一般与显示面板结合使用，触控面板中设置有多个触控电极，通过触控电极可以检测到用户的触摸位置。在相关技术中，具有触控面板的触控设备处于弱接地状态时，例如，该触控设备位于绝缘桌面上或者用户躺在床上使用该触控设备时，会出现触控漂移或触控无反应的情况。
发明内容
本公开实施提供的触控面板，其中，包括：
衬底基板；
触控电极层，位于所述衬底基板之上；所述触控电极层包括：多个触控电极和多个虚拟电极；所述虚拟电极与所述触控电极绝缘设置；所述触控电极层中的至少部分所述虚拟电极接地设置。
可选地，在本公开实施例中，还包括：位于所述衬底基板与所述触控电极层之间的导电连接层，以及位于所述导电连接层与所述触控电极层之间的绝缘层；
所述导电连接层包括：接地设置的虚拟电极引线；
所述绝缘层包括：多个第一通孔；
所述触控电极层中的至少部分所述虚拟电极通过所述第一通孔与所述虚拟电极引线耦接。
可选地，在本公开实施例中，至少部分所述触控电极具有镂空区域，所述虚拟电极位于所述镂空区域内。
可选地，在本公开实施例中，所述虚拟电极的几何中心和所述镂空区域的几何中心重合。
可选地，在本公开实施例中，所述触控电极分为绝缘且交叉设置的第一电极和第二电极；
所述第一电极包括：沿第一方向排列的多个第一子电极；所述导电连接层还包括：多个桥接电极；所述绝缘层还包括：多个第二通孔；所述第一电极中，相邻两个所述第一子电极通过所述第二通孔与所述桥接电极耦接；
所述第二电极包括：沿第二方向排列的多个第二子电极，所述第一方向与所述第二方向相互交叉；所述触控电极层还包括：多个连接部；所述第二电极中，相邻两个所述第二子电极通过所述连接部耦接；
所述第一子电极具有所述镂空区域。
可选地，在本公开实施例中，所述第二子电极具有所述镂空区域。
可选地，在本公开实施例中，所述第一子电极的边缘具有多个第一凸起结构，所述第二子电极的边缘具有多个第二凸起结构；
所述第一凸起结构和所述第二凸起结构交错排列。
可选地，在本公开实施例中，所述虚拟电极的边缘具有多个第三凸起结构，所述镂空区域具有多个凹陷结构；
所述第三凸起结构位于所述凹陷结构内。
可选地，在本公开实施例中，所述第一电极为触控驱动电极，所述第二电极为触控感应电极；或，
所述第一电极为触控感应电极，所述第二电极为触控驱动电极。
可选地，在本公开实施例中，各所述虚拟电极的形状和尺寸相同。
可选地，在本公开实施例中，所述触控电极层中的多个所述虚拟电极在 第一方向和第二方向上呈阵列排布；所述第一方向与所述第二方向相互交叉；
所述导电连接层中设有多条所述虚拟电极引线，且多条所述虚拟电极引线沿所述第一方向延伸，且沿所述第二方向排列；所述虚拟电极引线与在第一方向上排列的一排所述虚拟电极耦接。
可选地，在本公开实施例中，所述导电连接层还包括：沿所述第二方向延伸的导电连接线；
所述导电连接线与相邻的至少两条所述虚拟电极引线耦接。
可选地，在本公开实施例中，所述导电连接层中设有两条所述导电连接线；
所述导电连接层中的一部分所述虚拟电极引线与其中一条所述导电连接线耦接，另一部分所述虚拟电极引线与另一条所述导电连接线耦接。
可选地，在本公开实施例中，所述导电连接层中设有一条所述导电连接线；
所述导电连接层中的各所述虚拟电极引线均与所述导电连接线耦接。
可选地，在本公开实施例中，还包括：位于所述衬底基板与所述触控电极层之间的显示模组，位于所述显示模组靠近所述触控电极层一侧的封装层，位于所述触控电极层背离所述封装层一侧的偏光片，位于所述触控电极层靠近所述偏光片一侧的保护层，以及位于所述偏光片背离所述触控电极层一侧的盖板。
相应地，本公开实施例还提供了一种显示装置，其中，包括上述任一触控面板。
可选地，在本公开实施例中，还包括：柔性电路板；
所述柔性电路板包括接地端，触控电极层中的至少部分虚拟电极与所述接地端耦接。
可选地，在本公开实施例中，导电连接层包括：虚拟电极引线及导电连接线；所述虚拟电极与所述虚拟电极引线耦接，所述导电连接线与相邻的至少两条所述虚拟电极引线耦接；
所述导电连接线与所述柔性电路板中的所述接地端耦接。
附图说明
图1为相关技术中触控设备在弱接地状态下理想状况和实际状况的触控效果对比示意图；
图2为本公开实施例中触控面板的截面示意图；
图3为本公开实施例提供的触控面板的平面结构示意图；
图4为图3所示触控面板的局部放大示意图；
图5为本公开实施例提供的触控面板的另一平面结构示意图；
图6为图5所示触控面板的局部放大示意图；
图7为本公开实施例提供的触控面板的另一平面结构示意图；
图8为本公开实施例提供的触控面板的另一平面结构示意图；
图9为本公开实施例中触控面板的另一截面示意图。
具体实施方式
为了使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施例提供的触控面板及显示装置作进一步地详细描述，显然，所描述的实施例仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本公开保护的范围。
附图中各部件的形状和大小不反映真实比例，目的只是示意说明本公开内容。
在相关技术中，对于常规触控面板来说，用户手指与触控层、触控层与显示层之间距离较大，具有触控面板的设备在弱接地状态时，触控信号受到的影响较小，触控芯片输出的触控位置较准确。
然而，随着触控技术的发展，触控设备越来越轻薄，例如，在有机电致发光二极管(OrganicLight-Emitting Diode，OLED)显示装置中，采用柔性多 层触控技术(Flexible Multi-Layer On Cell，FMLOC)能够将触控层设置在OLED显示装置内部，使OLED显示装置较轻薄。
图1为相关技术中触控设备在弱接地状态下理想状况和实际状况的触控效果对比示意图，图1中以触控设备采用互电容的触控结构为例进行示意，即触控设备包括多条触控驱动电极Tx和多条触控感应电极Rx，触控设备采用其他类型的触控结构的原理与之类似，此处不再一一举例说明。
如图1中的(a)所示，触控设备处于弱接地状态时，如触控设备位于绝缘桌面上或者用户躺在床上使用触控设备时，如果用户手指与触控设备的接触区域Q的面积较大，例如，用户手指较大或者多指同时接触同一条触控驱动电极Tx(或触控感应电极Rx)时，理想情况下，触控感应电极Rx检测到的触控信号强度应集中于接触区域Q的中心位置处，使触控芯片输出一个触摸位置q的坐标。然而，如图1中的(b)所示，触控设备处于弱接地状态时，由于触控设备弱接地，触控驱动电极Tx和触控感应电极Rx之间的电荷不能通过人体很好的传递至大地，导致用户手指与触控设备的接触区域Q的面积较大时，会出现触控漂移或者触控无反应的情况，因而，实际情况下，触控感应电极Rx检测到的触控信号强度较弱且较分散，导致触控芯片输出多个触摸位置q的坐标，即出现多点误报的情况，进而导致触控性能不佳，影响用户使用体验。
有鉴于此，本公开实施例提供了一种触控面板及显示装置，图2为本公开实施例中触控面板的截面示意图，如图2所示，本公开实施例提供的触控面板，可以包括：
衬底基板10；
触控电极层2，位于衬底基板10之上；触控电极层2包括：多个触控电极21和多个虚拟电极22；虚拟电极22与触控电极21绝缘设置；触控电极层2中的至少部分虚拟电极22接地设置。
本公开实施例提供的上述触控面板中，通过在触控电极层2中设置与触控电极21绝缘的虚拟电极22，在触控面板处于正常接地情况下使用时，虚拟 电极22的设置可以增大触控区域，使更多的感应区域能灵敏的感应到用户的触控行为，从而提高触控的灵敏度。另外，在触控面板处于弱接地情况下(如触控面板放置在桌面上或者用户躺在床上等情况)使用时，由于触控电极层2中的至少部分虚拟电极22接地设置，这样在触控面板处于弱接地情况下使用时，触控电极21之间的电荷可以通过手指传递至虚拟电极22，由于虚拟电极22接地，因此触控电极21之间的电荷可以很好的传递至大地，故对于触控电极21来说也同样可以侦测到较强信号量，触控芯片能够输出较准确的触控位置，提高用户触控使用体验。
可选地，本公开实施例提供的上述触控面板中，继续参照图2，还可以包括：位于衬底基板10与触控电极层2之间的导电连接层1，以及位于导电连接层1与触控电极层2之间的绝缘层3；
导电连接层1包括：接地设置的虚拟电极引线11；
绝缘层3包括：多个第一通孔V1；
触控电极层2中的至少部分虚拟电极22通过第一通孔V1与虚拟电极引线11耦接。
本公开实施例中，将虚拟电极22通过绝缘层3中的第一通孔V1与虚拟电极引线11耦接，由于虚拟电极引线11接地设置，从而实现了虚拟电极22接地设置，减少了触控电极层2中的引线数量。并且，将导电连接层1设置在触控电极层2靠近衬底基板10的一侧，可以使触控电极层2与触控面板的触控面的距离较近，这样，能够更灵敏的检测到用户的触摸行为，触控效果更好。此外，在具体实施时，也可以将导电连接层1设置在触控电极层2远离衬底基板10的一侧，此处不做限定。
在具体实施时，由于触控电极的面积越小，触控电极对地电容也越小，触控面板的功耗也越小，因此为了降低触控面板的功耗，在本公开实施例提供的上述触控面板中，图3为本公开实施例提供的触控面板的平面结构示意图，图4为图3的局部放大示意图，如图3和图4所示，至少部分触控电极21具有镂空区域01，虚拟电极22位于镂空区域01内。这样，不仅可以保证 触控面板在弱接地状态情况下的触控检测效果较好，而且还能够降低触控面板的功耗。可选地，继续参照图4，本公开实施例提供的上述触控面板中，虚拟电极22的几何中心可以和镂空区域01的几何中心重合。
在具体实施时，在本公开实施例提供的上述触控面板中，如图2、图3和图4所示，触控电极21分为绝缘且交叉设置的第一电极211和第二电极212，也就是说，本公开实施例中的触控电极21为互电容结构，在实际应用中，触控电极21也可以采用自电容结构，此处不做限定。
第一电极211包括：沿第一方向F1排列的多个第一子电极211a；导电连接层1还包括：多个桥接电极12；绝缘层3还包括：多个第二通孔V2；第一电极211中，相邻两个第一子电极211a通过第二通孔V2与桥接电极12耦接；
第二电极212包括：沿第二方向F2排列的多个第二子电极212a，第一方向F1与第二方向F2相互交叉；触控电极层2还包括：多个连接部212b；第二电极212中，相邻两个第二子电极212a通过连接部212b耦接；
本公开实施例中，在导电连接层1中设置桥接电极12，相邻两个第一子电极211a可以通过第二通孔V2与桥接电极12耦接，进而，可以使第一电极211中的各第一子电极211a实现相互耦接，并且，桥接电极12与虚拟电极引线11位于同一膜层，在制作过程中，可以采用一次构图工艺制作桥接电极12与虚拟电极引线11，节省制作成本。通过在触控电极层2中设置连接部212b，相邻两个第二子电极212a可以通过连接部212b耦接，可以使第二电极212中的各第二子电极212a实现相互耦接。这样，使得第一电极211与第二电极212可以制作在同一触控电极层2中，能够减少制作工序，降低成本。
本公开实施例中，以第一电极中的各第一子电极通过桥接电极实现相互耦接，第二电极中的各第二子电极通过连接部实现相互耦接为例进行说明，在具体实施时，也可以设置为第一电极中的各第一子电极通过连接部实现相互耦接，第二电极中的各第二子电极通过桥接电极实现相互耦接，此处不做限定。
如图3和图4所示，第一子电极211a具有镂空区域01。这样可以将虚拟 电极22设置在镂空区域01内，一方面，减小第一电极211的对地电容，降低触控面板的功耗，另一方面，触控电极21之间的电荷可以通过手指传递至虚拟电极22，由于虚拟电极22接地，因此触控电极21之间的电荷可以很好的传递至大地，故触控电极21同样可以侦测到较强信号量，触控芯片输出的触控位置较准确，提高用户触控使用体验。
在具体实施时，在本公开实施例提供的上述触控面板中，如图5和图6所示，图5为本公开实施例提供的触控面板的另一平面结构示意图，图6为图5的局部放大示意图，第二子电极212也具有镂空区域01。这样可以减小第二电极212的对地电容，进一步降低触控面板的功耗，并且第一子电极211a和第二子电极212a均具有镂空区域01，可以使整个触控面板内设置在镂空区域01内的虚拟电极22更加均匀，触控面板内每个触摸位置均可以侦测到较强信号量，整个触控面板的每个触摸位置均不会出现多点误报的情况，进一步提高用户触控使用体验。
在具体实施时，在本公开实施例提供的上述触控面板中，如图3和图5所示，还可以包括：触控电极引线02，触控电极引线02将触控电极21与触控芯片耦接。
在具体实施时，为了进一步降低触控面板的功耗，在本公开实施例提供的上述触控面板中，如图3至图6所示，第一子电极211a的边缘具有多个第一凸起结构001，第二子电极212a的边缘具有多个第二凸起结构002；
第一凸起结构001和第二凸起结构002交错排列。
也就是说，第一子电极211a和第二子电极212a的边缘设置为锯齿结构，这样可以降低第一电极211和第二电极212的方阻，从而降低触控面板的功耗。
在具体实施时，为了进一步降低触控面板的功耗，在本公开实施例提供的上述触控面板中，如图3至图6所示，虚拟电极22的边缘具有多个第三凸起结构003，镂空区域01具有多个凹陷结构004；
第三凸起结构003位于凹陷结构004内。
也就是说，虚拟电极22和镂空区域01的边缘设置为锯齿结构，这样可以降低虚拟电极22的方阻，更进一步降低触控面板的功耗。
需要说明的是，上述所说的锯齿结构不一定是规则的锯齿结构，只要边缘具有齿状结构即可。
在具体实施时，为了方便统一制作，在本公开实施例提供的上述触控面板中，如图3至图6所示，虚拟电极22的几何中心和第一子电极211a(或第二子电极212a)的几何中心重合。具体地，第一子电极211a内的虚拟电极22的几何中心和第一子电极211a的结合中心重合，第二子电极212a内的虚拟电极22的几何中心和第二子电极212a的几何中心重合。
当然，在具体实施时，虚拟电极的几何中心和第一子电极(或第二子电极)的几何中心重合也可以不重合，只要满足虚拟电极和触控电极绝缘即可。
可选地，在具体实施时，在本公开实施例提供的上述触控面板中，第一电极为触控驱动电极，第二电极为触控感应电极；或，
第一电极为触控感应电极，第二电极为触控驱动电极。
在具体实施时，为了方便统一制作工艺，在本公开实施例提供的上述触控面板中，如图3至图6所示，各虚拟电极22的形状和尺寸相同。当然，各虚拟电极22的形状和尺寸也可以不相同。
图7为本公开实施例提供的触控面板的另一平面结构示意图，为了清楚的示意虚拟电极与虚拟电极引线之间的连接关系，图中省去了各触控电极，如图7所示，触控电极层中的多个虚拟电极22在第一方向F1和第二方向F2上呈阵列排布；第一方向F1与第二方向F2相互交叉；
导电连接层中设有多条虚拟电极引线11，且多条虚拟电极引线11沿第一方向F1延伸，且沿第二方向F2排列；虚拟电极引线11与在第一方向F1上排列的一排虚拟电极22耦接。
本公开实施例中，通过将触控电极层中的各虚拟电极22设置为呈阵列排布，并且，每条虚拟电极引线11与在第一方向F1上排列的一排虚拟电极22耦接，便于将各虚拟电极22引出。此外，触控电极层中的各虚拟电极22也 可以设置为其他排布方式，此处不做限定。
可选地，同样参照图7，上述导电连接层还可以包括：沿第二方向F2延伸的导电连接线13；导电连接线13与相邻的至少两条虚拟电极引线11耦接。在实际应用中，可以将触控面板与柔性电路板Fp耦接，通过柔性电路板Fp中的接地端(如图7中的Gn1或Gn2)向各虚拟电极22提供接地信号。导电连接线13耦接的各虚拟电极引线11可以与柔性电路板Fp中的同一个接地端耦接，减少与接地端连接的引线数量，便于布线。
继续参照图7，本公开实施例中，上述导电连接层中可以设有两条导电连接线13；导电连接层中的一部分虚拟电极引线11与其中一条导电连接线13耦接，另一部分虚拟电极引线11与另一条导电连接线13耦接。例如，在所有虚拟电极引线11中，其中连续排列的一半虚拟电极引线11一条导电连接线13耦接，并与柔性电路板Fp中的第一接地端Gn1耦接，连续排列的另一半虚拟电极引线11与另一条导电连接线13耦接，并与柔性电路板Fp中的第二接地端Gn2耦接。
图8为本公开实施例提供的触控面板的另一平面结构示意图，为了清楚的示意虚拟电极与虚拟电极引线之间的连接关系，图中省去了各触控电极，如图8所示，导电连接层中设有一条导电连接线13；导电连接层中的各虚拟电极引线11均与导电连接线13耦接。这样，所有的虚拟电极引线11均与柔性电路板Fp中的同一个接地端Gn耦接。
本公开实施例中，以导电连接层中设置一条或两条导电连接线为例进行举例，在具体实施时，导电连接层中也可以设置更多条导电连接线，此处不做限定。
图9为本公开实施例中触控面板的另一截面示意图，如图9所示，本公开实施例提供的上述触控面板中，还可以包括：位于衬底基板10与触控电极层2之间的显示模组6，位于显示模组6靠近触控电极层2一侧的封装层7，位于触控电极层2背离封装层一侧的偏光片3，位于触控电极层2靠近偏光片3一侧的保护层4，以及位于偏光片3背离触控电极层2一侧的盖板5。
可选地，上述显示模组6可以为有机电致发光二极管显示面板，具体地，显示模组6可以包括阳极、阴极、以及位于阳极与阴极之间的发光层，通过向阳极和阴极施加电信号，控制发光层发光。通过在显示模组6靠近触控电极层2的一侧设置封装层7，可以避免外界水汽和氧气侵蚀发光层。上述偏光片3可以为圆偏光片，可以减少外界光线的反射率，提高显示模组6的显示效果。保护层4具有保护触控电极层2和导电连接层1的作用，具体地，保护层5的材料可以为氮氧化硅。盖板5可以保护触控面板的内部结构。此外，显示模组6也可以为其他类型的显示面板，此处不做限定。
也就是说，本公开实施例提供的触控面板，可以为仅具有触控功能的触控面板，也可以为具有显示功能的触控显示面板。
基于同一发明构思，本公开实施例还提供了一种显示装置，包括本公开实施例提供的上述任一触控面板。该显示装置的实施可以参见上述触控面板的实施例，重复之处不再赘述。
在具体实施时，在本公开实施例提供的上述显示装置中，如图7和图8所示，还可以包括：柔性电路板Fp，柔性电路板Fp包括接地端，例如图7中，柔性电路板Fp包括第一接地端Gn1和第二接地端Gn2，例如图8中，柔性电路板Fp包括一个接地端Gn。触控电极层中的至少部分虚拟电极22与接地端耦接。这样，可以通过柔性电路板Fp中的接地端向各虚拟电极22提供接地信号，实现虚拟电极22的接地设置。
继续参照图7和图8，本公开实施例提供的上述显示装置中，导电连接层可以包括：虚拟电极引线11及导电连接线13；虚拟电极22与虚拟电极引线11耦接，导电连接线13与相邻的至少两条虚拟电极引线11耦接；导电连接线13与柔性电路板Fp中的接地端耦接。通过设置虚拟电极引线11和导电连接线13，可以将虚拟电极22连接至柔性电路板Fp的接地端。
在具体实施时，虚拟电极引线的连接方式不限于图8和图9，还可以与更多的接地端电连接，均属于本公开保护的范围。
具体地，本公开实施例中，为了证实将虚拟电极接地设置可以提高触控 效果，将本公开实施例中的显示装置放置在弱接地状态下使用，分别对虚拟电极为接地设置和虚拟电极为悬浮设置(不向虚拟电极施加任何信号)进行模拟仿真，得到的仿真数据如表1所示：
表1
  虚拟电极为悬浮设置 虚拟电极为接地设置
Cp(Tx_unit) 10.864 10.688
Cp(Rx_unit) 11.092 10.876
Cm(w/o finger) 0.644 0.640
Cm1(w/finger) 0.484 0.456
△Cm(Cm-Cm1) 0.16 0.184
△Cm/Cm 24.84％ 28.75％
Cp(Tx_finger) 0.988 0.856
Cp(Rx_finger) 1.008 0.882
LGM index 0.321 0.424
其中，Cp(Tx_unit)为触控驱动电极的对地电容，Cp(Rx_unit)为触控感应电极的对地电容，Cm(w/o finger)为没有手指触摸时触控电极之间的电容，Cm1(w finger)为有手指触摸时触控电极和手指之间的耦合电容，Cp(Tx_finger)为触控驱动电极与手指之间的耦合电容，Cp(Rx_finger)为触控感应电极与手指之间的耦合电容。从表1可以看出，虚拟电极为接地设置时的△Cm比虚拟电极为悬浮设置时的△Cm大，虚拟电极为接地设置时的触控信号量(LGM Index)比虚拟电极为悬浮设置时的触控信号量(LGM Index)大，因此，本公开实施例提供的采用虚拟电极接地设置的显示装置的触控性能较好，触控芯片可以输出准确的触控位置，不会出现多点误报的情况，提高用户触控使用体验。
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。
本公开实施例提供的上述触控面板及显示装置，通过在触控电极层中设置与触控电极绝缘的虚拟电极，在触控面板处于正常接地情况下使用时，虚拟电极的设置可以增大触控区域，使更多的感应区域能灵敏的感应到用户的触控行为，从而提高触控的灵敏度；在触控面板处于弱接地情况下(如触控面板放置在桌面上或者用户躺在床上等情况)使用时，由于触控电极层中的至少部分虚拟电极接地设置，这样在触控面板处于弱接地情况下使用时，触控电极之间的电荷可以通过手指传递至虚拟电极，由于虚拟电极接地，因此触控电极之间的电荷可以很好的传递至大地，故对于触控电极来说也同样可以侦测到较强信号量，触控芯片能够输出较准确的触控位置，提高用户触控使用体验。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (18)

  1. 一种触控面板，其中，包括：
    衬底基板；
    触控电极层，位于所述衬底基板之上；所述触控电极层包括：多个触控电极和多个虚拟电极；所述虚拟电极与所述触控电极绝缘设置；所述触控电极层中的至少部分所述虚拟电极接地设置。
  2. 如权利要求1所述的触控面板，其中，还包括：位于所述衬底基板与所述触控电极层之间的导电连接层，以及位于所述导电连接层与所述触控电极层之间的绝缘层；
    所述导电连接层包括：接地设置的虚拟电极引线；
    所述绝缘层包括：多个第一通孔；
    所述触控电极层中的至少部分所述虚拟电极通过所述第一通孔与所述虚拟电极引线耦接。
  3. 如权利要求2所述的触控面板，其中，至少部分所述触控电极具有镂空区域，所述虚拟电极位于所述镂空区域内。
  4. 如权利要求3所述的触控面板，其中，所述虚拟电极的几何中心和所述镂空区域的几何中心重合。
  5. 如权利要求3所述的触控面板，其中，所述触控电极分为绝缘且交叉设置的第一电极和第二电极；
    所述第一电极包括：沿第一方向排列的多个第一子电极；所述导电连接层还包括：多个桥接电极；所述绝缘层还包括：多个第二通孔；所述第一电极中，相邻两个所述第一子电极通过所述第二通孔与所述桥接电极耦接；
    所述第二电极包括：沿第二方向排列的多个第二子电极，所述第一方向与所述第二方向相互交叉；所述触控电极层还包括：多个连接部；所述第二电极中，相邻两个所述第二子电极通过所述连接部耦接；
    所述第一子电极具有所述镂空区域。
  6. 如权利要求5所述的触控面板，其中，所述第二子电极具有所述镂空区域。
  7. 如权利要求5所述的触控面板，其中，所述第一子电极的边缘具有多个第一凸起结构，所述第二子电极的边缘具有多个第二凸起结构；
    所述第一凸起结构和所述第二凸起结构交错排列。
  8. 如权利要求7所述的触控面板，其中，所述虚拟电极的边缘具有多个第三凸起结构，所述镂空区域具有多个凹陷结构；
    所述第三凸起结构位于所述凹陷结构内。
  9. 如权利要求5所述的触控面板，其中，所述第一电极为触控驱动电极，所述第二电极为触控感应电极；或，
    所述第一电极为触控感应电极，所述第二电极为触控驱动电极。
  10. 如权利要求1所述的触控面板，其中，各所述虚拟电极的形状和尺寸相同。
  11. 如权利要求2所述的触控面板，其中，所述触控电极层中的多个所述虚拟电极在第一方向和第二方向上呈阵列排布；所述第一方向与所述第二方向相互交叉；
    所述导电连接层中设有多条所述虚拟电极引线，且多条所述虚拟电极引线沿所述第一方向延伸，且沿所述第二方向排列；所述虚拟电极引线与在第一方向上排列的一排所述虚拟电极耦接。
  12. 如权利要求11所述的触控面板，其中，所述导电连接层还包括：沿所述第二方向延伸的导电连接线；
    所述导电连接线与相邻的至少两条所述虚拟电极引线耦接。
  13. 如权利要求12所述的触控面板，其中，所述导电连接层中设有两条所述导电连接线；
    所述导电连接层中的一部分所述虚拟电极引线与其中一条所述导电连接线耦接，另一部分所述虚拟电极引线与另一条所述导电连接线耦接。
  14. 如权利要求12所述的触控面板，其中，所述导电连接层中设有一条 所述导电连接线；
    所述导电连接层中的各所述虚拟电极引线均与所述导电连接线耦接。
  15. 如权利要求1～14任一项所述的触控面板，其中，还包括：位于所述衬底基板与所述触控电极层之间的显示模组，位于所述显示模组靠近所述触控电极层一侧的封装层，位于所述触控电极层背离所述封装层一侧的偏光片，位于所述触控电极层靠近所述偏光片一侧的保护层，以及位于所述偏光片背离所述触控电极层一侧的盖板。
  16. 一种显示装置，其中，包括如权利要求1-15任一项所述的触控面板。
  17. 如权利要求16所述的显示装置，其中，还包括：柔性电路板；
    所述柔性电路板包括接地端，触控电极层中的至少部分虚拟电极与所述接地端耦接。
  18. 如权利要求17所述的显示装置，其中，导电连接层包括：虚拟电极引线及导电连接线；所述虚拟电极与所述虚拟电极引线耦接，所述导电连接线与相邻的至少两条所述虚拟电极引线耦接；
    所述导电连接线与所述柔性电路板中的所述接地端耦接。
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