WO2014012319A1 - 触摸显示面板 - Google Patents

触摸显示面板 Download PDF

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Publication number
WO2014012319A1
WO2014012319A1 PCT/CN2012/085946 CN2012085946W WO2014012319A1 WO 2014012319 A1 WO2014012319 A1 WO 2014012319A1 CN 2012085946 W CN2012085946 W CN 2012085946W WO 2014012319 A1 WO2014012319 A1 WO 2014012319A1
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WO
WIPO (PCT)
Prior art keywords
line
comb
comb structure
layer
common electrode
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/085946
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English (en)
French (fr)
Inventor
吴天一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Tianma Microelectronics Co Ltd
Original Assignee
Shanghai Tianma Microelectronics Co Ltd
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
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Application filed by Shanghai Tianma Microelectronics Co Ltd filed Critical Shanghai Tianma Microelectronics Co Ltd
Priority to KR1020137022555A priority Critical patent/KR101534425B1/ko
Priority to EP12868921.3A priority patent/EP2706442B1/en
Priority to US14/014,948 priority patent/US9588368B2/en
Publication of WO2014012319A1 publication Critical patent/WO2014012319A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a touch display panel.
  • the liquid crystal display panel has a Twisted Nematic (TN) display mode widely used according to the display mode of the liquid crystal, but the viewing angle is limited in the display principle.
  • TN Twisted Nematic
  • the transverse electric field method is known as an In-Plane Switching (IPS) method and a Fringe Field Swithing (FFS) method.
  • the IPS method is configured by combining a comb-shaped pixel electrode and a comb-shaped common electrode, and the FFS method is for an upper electrode layer and a lower electrode layer formed on the same substrate via an insulating layer, One is assigned as a common electrode, the other is assigned as a pixel electrode, and the upper electrode layer is provided in a comb-like structure or the like, in which a slit is formed as an opening through which an electric field passes.
  • a touch display panel using a liquid crystal as a display (LCD) is widely used, which allows a user to touch a touch screen with a hand or other object, thereby inputting a letter to a device using the display panel. This can reduce or eliminate the user's dependence on other input devices (such as keyboard, mouse, remote control, etc.), which is convenient for the user.
  • the early touch display panel was resistive, and the pressure of the touch body and the display panel at the contact position caused the two conductive films to contact, thereby closing a switch and sending a touch signal.
  • the two conductive films are degraded or even damaged due to continuous pressing deformation, which easily causes misjudgment of the touch signal.
  • a capacitive touch display panel has been proposed.
  • the basic structure of the touch layer of the capacitive touch display panel includes: a dielectric material, two dielectric films separated by the dielectric material, and a driving line 11 disposed on the lower conductive film, and the upper conductive film is disposed on the upper conductive film Line 12 is detected.
  • the equivalent circuit of the touch layer is as shown in FIG. 2, a capacitance d is formed between the driving line 11 and the detecting line 12, and each has an equivalent resistance R 2 and R 3 , and the detecting line 12
  • the driving line 11 and the detecting line 12 each have a parasitic capacitance C 2 , C 3 between the other conductive layers of the display panel, and the driving line 11 parasitic capacitance C 2 and the resistor R 4 are connected in series and grounded, and the detecting line 12 parasitic capacitance C 3 is connected in series with resistor R 5 and grounded.
  • the alternating current signal 1 is applied to the drive line 11.
  • the voltage V s of the corresponding signal can be detected on the detection line 12.
  • the touch body e.g., a finger
  • the touch layer for example 12, as shown in FIG detection line 3, the equivalent circuit of the touch layer 4, the finger is applied to a capacitor C 5 ground line 12 on the detector, And the equivalent resistance of the finger is R 6 .
  • the signal 1 of the alternating current is still applied to the drive line 11. Since the grounding capacitor C 5 and the resistor R 6 are connected in series with the capacitor, the voltage 1 ⁇ 4 of the corresponding signal detected on the detecting line 12 becomes small.
  • the magnitude of the voltage on the detection line 12 can be obtained to know whether the touch layer is touched.
  • FFS liquid crystal display (FFS-LCD) touch display panel including: Color Film (CF) a substrate, a TFT substrate, and a liquid crystal layer therebetween, wherein the touch layer is disposed on the CF substrate.
  • the driving line and the detecting line are covered with the entire layer, which causes the driving line and the detecting line to completely overlap the upper electrode layer (pixel electrode or common electrode) having a comb structure, respectively.
  • the liquid crystal is equivalent to a dielectric material
  • the driving line and the detecting line are equivalent to one plate
  • the upper electrode layer having the slit is equivalent to the other plate.
  • the driving line and the detecting line are respectively There is a parasitic capacitance between the upper electrode layer having a comb structure.
  • the presence of the parasitic capacitance causes the voltage V s obtained by the detection line to become small, thereby reducing the detection sensitivity of the touch display panel.
  • the entire layer of the driving line and the detecting line is also caused to have parasitic capacitance between the driving line and the detecting line and the separated common electrode and the pixel electrode, thereby reducing the detection sensitivity of the touch display panel.
  • the present invention proposes a touch display panel to improve the above problems.
  • the problem to be solved by the present invention is to provide a touch display panel to reduce the parasitic capacitance of the driving line and the detecting line and the upper electrode layer (or the separated common electrode and the pixel electrode) having the comb structure, respectively, and improve the touch display panel. Detection sensitivity.
  • the present invention provides a touch display panel, comprising: a CF substrate and a TFT substrate disposed opposite to each other, and a liquid crystal layer therebetween, wherein the TFT substrate is disposed adjacent to the liquid crystal layer and has a comb structure a common electrode and/or a pixel electrode having a comb structure, the CF substrate is provided with a touch layer adjacent to the liquid crystal layer, and the touch layer includes driving lines and detection lines insulated from each other, the driving line and/or the detecting line There is a comb structure, and the comb structure is at least partially offset from the comb structure of the common electrode and/or the comb structure of the pixel electrode.
  • the comb line of the driving line and/or the detecting line and the comb of the common electrode is complementary.
  • the driving line is formed in the same layer as the detecting line, and the driving line is perpendicular to the detecting line.
  • the driving line is spaced apart from the detecting line, and the partitioning portion has a first bridging portion, and the first bridging portion connects the spaced detecting lines across the driving line.
  • the detecting line is spaced apart from the driving line, and the partitioning portion has a second bridging portion, and the second bridging portion connects the spaced driving lines across the detecting line.
  • the touch layer includes a first touch layer and a second touch layer insulated from each other, the driving line is formed on the first touch layer, and the detection line is formed on the second touch layer.
  • the second touch layer is closer to the liquid crystal layer than the first touch layer, and the detection line has a comb that is offset from a comb structure of the common electrode and/or a comb structure of a pixel electrode. Structure.
  • the first touch layer is closer to the liquid crystal layer than the second touch layer, and the driving line has a comb that is offset from a comb structure of the common electrode and/or a comb structure of a pixel electrode. Structure.
  • the common electrode is disposed on a surface of the TFT substrate near the liquid crystal layer, the common electrode has a comb structure, and the comb structure of the driving line and/or the detecting line is at least partially in common with the common
  • the comb structure of the electrodes is staggered.
  • the pixel electrode is disposed on a surface of the TFT substrate adjacent to the liquid crystal layer, the pixel electrode has a comb structure, and the comb structure of the driving line and/or the detecting line is at least partially connected to the pixel
  • the comb structure of the electrodes is staggered.
  • the common electrode and the pixel electrode are disposed on a surface of the TFT substrate near the liquid crystal layer
  • the common electrode and the pixel electrode have spaced comb structures, and the comb line of the driving line and/or the detecting line is at least partially comb-shaped with the common electrode, and the comb of the pixel electrode The structures are staggered.
  • the driving line and the detecting line are made of a transparent material.
  • the material of the common electrode or the pixel electrode is transparent.
  • the driving line and the detecting line are made of indium tin oxide or indium oxide, or a combination of indium tin oxide and indium oxide.
  • the present invention has the following advantages:
  • the common electrode and the pixel electrode located on the TFT substrate close to the liquid crystal layer have a comb structure, and the setting manner of the touch layer on the CF substrate is different from the existing driving line and the detection line cloth.
  • the present invention also has a comb structure on the driving line and/or the detecting line, and the comb structure is at least partially comb-shaped with a common electrode located on the TFT substrate near the liquid crystal layer and a comb of the pixel electrode At least one of the structures is staggered, so that the common electrode and/or the pixel electrode of the TFT substrate are completely overlapped with the driving line and/or the detecting line of the CF substrate, and the parasitic capacitance is reduced; for the FFS-LCD touch display panel, the TFT substrate is close to
  • the liquid crystal layer is provided with a common electrode having a comb structure or a pixel electrode having a comb structure, and the arrangement of the touch layer on the CF substrate is different from the conventional driving line and the detection line covering the entire layer, and the present invention
  • a comb structure is also disposed on the driving line and/or the detecting line, and the comb structure is at least partially connected to a common electric layer located on the TFT substrate adjacent to the liquid crystal layer.
  • Comb structure comb structure or the pixel electrodes in a staggered manner, to avoid the common electrode of the TFT substrate and / or the drive line of the pixel electrode and the CF substrate and / or the detection line completely overlap, reducing the parasitic capacitance.
  • the comb for the IPS-LCD touch display panel, the drive line and/or the test line The at least one portion of the comb structure and the comb structure of the pixel electrode at least partially located on the TFT substrate adjacent to the liquid crystal layer is not only staggered but also complementary, further reducing the common electrode and/or the pixel electrode and the CF substrate of the TFT substrate.
  • the comb structure of the drive line and/or the detection line is at least partially comb-like with the common electrode located on the TFT substrate adjacent to the liquid crystal layer or
  • One of the comb-like structures of the pixel electrodes is not only staggered but also complementary, further reducing the parasitic capacitance between the common electrode and/or the pixel electrode of the TFT substrate and the drive line and/or the detection line of the CF substrate.
  • FIG. 1 is a schematic structural view of a conventional capacitive touch display panel when the touch layer is not touched;
  • FIG. 2 is an equivalent circuit diagram of FIG. 1;
  • FIG. 5 is a schematic structural view of a touch display panel of the present invention.
  • FIG. 6 is a plan view of a pixel unit of a TFT substrate of an IPS-LCD touch display panel;
  • FIG. 7 is a cross-sectional view taken along line I - I of FIG.
  • Figure 8 is a cross-sectional view showing the optimized structure of the structure of Figure 7;
  • Figure 9 is a schematic structural view of a driving wire in the present invention.
  • Figure 10 is a schematic structural view of a detecting line in the present invention.
  • FIG. 11 is a plan view of a touch panel formed by a CF substrate and one pixel unit of the TFT substrate of FIG. 6;
  • Figure 12 is a cross-sectional view taken along line II - II of Figure 11;
  • Figure 13 is a plan view of a pixel unit of another TFT substrate of the IPS-LCD touch display panel;
  • Figure 14 is a schematic structural view of the touch layer of the present invention;
  • FIG. 16 is a cross-sectional view of still another TFT substrate of the IPS-LCD touch display panel;
  • FIG. 17 is a plan view of a pixel unit of the TFT substrate of the FFS-LCD touch display panel;
  • 18 is a cross-sectional view along the ⁇ - ⁇ line in FIG. 17;
  • FIG. 19 is a cross-sectional view showing an optimized structure of the structure of FIG. 18;
  • FIG. 20 is a plan view of the touch panel formed by the CF substrate and one pixel unit of the TFT substrate of FIG.
  • Figure 21 is a cross-sectional view taken along line IV-IV of Figure 20.
  • the IPS-LCD touch display panel with the liquid crystal display mode as the IPS mode is taken as an example to introduce the technical solution of the present invention.
  • the IPS-LCD touch display panel includes: a relatively set color film (Color Film, CF) substrate 2, TFT substrate 3, and liquid crystal layer 4 therebetween.
  • CF Color Film
  • the TFT substrate 3 will be described. Referring to a top view of one pixel unit shown in FIG. 6 and a cross-sectional view taken along line I - I in FIG. 7, the TFT substrate 3 includes a glass substrate 31 and a circuit substrate formed on the glass substrate 31. .
  • the surface of the circuit substrate adjacent to the liquid crystal layer 4 is the electrode layer 32, and includes a common electrode 322 and a pixel electrode 321 for applying a voltage for rotating the liquid crystal.
  • the circuit substrate includes a data line 34, a gate line 33, a TFT transistor formed at the intersection of the two lines, and a pixel electrode 321 formed in a region defined by the two lines, and further includes the same layer as the gate line 33 and the routing is substantially Parallel common electrode lines (not shown) that are electrically connected to the common electrode 322.
  • the gate of the TFT transistor is a portion of the gate line 33
  • the source is a portion of the data line 34
  • the drain is connected to the pixel electrode 321 through a via (not shown).
  • the pixel electrode 321 includes a bar 3211 and is perpendicular thereto.
  • the connected comb-tooth portion 3212 is formed in the same layer as the pixel electrode 321 and also has a portion of the common electrode 322.
  • the common electrode 322 has a bar portion 3221 which is substantially aligned along the common electrode line and a comb which runs substantially perpendicular to the vertical common electrode line. Tooth portion 3222.
  • the comb tooth portion 3222 and the comb tooth portion 3212 of the pixel electrode 321 are alternately provided to supply a voltage for rotating the liquid crystal molecules.
  • the bar portion 3221 and the comb tooth portion 3222 form a comb structure of the common electrode 322, and the bar portion 3211 and the comb tooth portion 3212 form a comb structure of the pixel electrode 321, and the purpose of each comb structure is A discontinuous gap (slit) is provided on each of the monolithic structures to provide an opening through which the electric field passes. Therefore, in other embodiments, a discontinuous gap may be formed on the common electrode 322 and the pixel electrode 321, respectively, and is not limited to a comb structure.
  • a protective film 35 may be disposed on the comb-tooth portion 3222 of the electrode 322 and the comb-tooth portion 3212 of the pixel electrode 321 .
  • the material may be silicon nitride.
  • the protective film 35 may further be provided with a liquid crystal alignment film 36. It can be a polyimide.
  • the glass substrate 31 may be made of a light-transmitting material such as quartz or flexible plastic as needed.
  • the CF substrate 2 includes a glass substrate 21, a filter layer (not shown) provided on the surface of the glass substrate 21, a light blocking layer (not shown), and a touch layer adjacent to the liquid crystal layer 4.
  • the touch layer includes a first touch layer and a second touch layer.
  • the driving line 22 is formed on the first touch layer, and the detecting line 24 is formed on the second touch layer.
  • the dielectric layer 23 is between the two touch layers.
  • the arrangement of the driving lines 22 and the detecting lines 24 is vertically arranged such that the touch signals are detected when the touch body touches the driving line 22 and the detecting line 24 at the intersection position.
  • the second touch layer on which the detection line 24 is formed is closer to the liquid crystal layer 4.
  • the first touch layer on which the driving line 22 is formed may be closer to the liquid crystal layer 4.
  • one unit formed by the one driving line 22 and one detecting line 24 may correspond to one pixel unit of the TFT substrate 3 or may correspond to a plurality of pixel units.
  • the driving line 22 and the detecting line 24 are all monolithic conductive layers.
  • the driving line 22 or the detecting line 24 is also provided with a comb structure.
  • the bridge-like structure of the drive line 22 includes a bridge tooth portion 222 that is perpendicular to and connected to the horizontal bar portion 221.
  • the comb structure of the detection line 24 includes a bridge tooth portion 242 that is perpendicular to and connected to the bar portion 241.
  • the specific arrangement of the detection line 24 is as follows: 1) Detection line The comb tooth portion 242 of the 24 is offset from the comb tooth portion 3212 of the pixel electrode 321; or 2) the comb tooth portion 242 of the detecting line 24 is offset from the comb tooth portion 3222 of the common electrode 322; or 3) the comb tooth portion 242 of the detecting line 24 Both the comb tooth portion 321 of the pixel electrode 321 and the comb tooth portion 3222 of the common electrode 322 are simultaneously shifted.
  • the common electrode 322 and the pixel electrode 321 of the TFT substrate 3 are prevented from completely overlapping the detection line 22 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the specific arrangement of the driving line 22 is as follows: 1) the driving line 22 The comb tooth portion 222 is offset from the comb tooth portion 3212 of the pixel electrode 321; or 2) the comb tooth portion 222 of the driving wire 22 is offset from the comb tooth portion 3222 of the common electrode 322; or 3) the comb tooth portion 222 of the driving wire 22 and the pixel
  • the comb tooth portion 321 of the electrode 321 and the comb tooth portion 3222 of the common electrode 322 are simultaneously shifted.
  • FIG. 11 provides a top view of the display panel corresponding to one pixel unit and the II-II along the 11th, after the CF substrate 2 and the TFT substrate 3 are aligned up and down.
  • a cross-sectional view of the line is shown in Figure 12. It can be seen that the driving wire 22 on the CF substrate 2 in Fig. 11 and Fig. 12 and the comb tooth portion 3212 of the pixel electrode on the TFT substrate 3 which are respectively located on the two layers are shifted from the comb tooth portion 3222 of the common electrode.
  • the comb structure of the driving line 22 or the detecting line 24 is at least partially offset from the comb structure of the comb structure and/or the pixel electrode 321 of the TFT substrate 3 adjacent to the common electrode 322 of the liquid crystal layer 4, thus avoiding the TFT
  • the common electrode 43322 and the pixel electrode 321 of the substrate 3 completely overlap with the drive line 22 and/or the detection line 24 of the CF substrate 2, reducing the parasitic capacitance.
  • the horizontal bar portion 3221 is located at one end of the comb tooth portion 3222, it being understood that the horizontal bar portion 3221 is not limited to the end located at the comb tooth portion 3222 in order to form a discontinuous gap.
  • a plurality of comb-tooth portions 3222 connected to the same common electrode 322, and a plurality of comb-shaped portions 3212 connected to the same pixel electrode 321 and the horizontal-bar portion 3211 have a plurality of, but, for the common electrode 322, a plurality of The connected comb-tooth portion 3222 is not limited to being connected to one of the horizontal bar portions 3221, and may be connected to the plurality of horizontal bar portions 3221.
  • the plurality of connected comb-shaped portions 3212 are not limited to being connected to one of the horizontal bar portions 3211, but may be connected to the plurality of horizontal bar portions 3211.
  • the plurality of connected comb-tooth portions 222 are not limited to being connected to one of the horizontal bar portions 221, but may be connected to the plurality of horizontal bar portions 221, and similarly, for the detection line 24, a plurality of connected combs
  • the tooth portion 242 is not limited to being connected to one of the horizontal bar portions 241, and may be connected to the plurality of horizontal bar portions 241.
  • the bar portion 221 and the comb tooth portion 222 form a comb structure of the drive wire 22
  • the bar portion 241 and the comb tooth portion 242 form a comb structure of the detection line 24, and the purpose of each comb structure is Discontinuous gaps (slits) are provided in the respective monolithic structures to provide an opening through which the electric field passes. Therefore, in other embodiments, discontinuous gaps may be formed on the driving lines 22 and the detecting lines 24, respectively, and are not limited to combs. structure.
  • the common electrode 322 and the pixel electrode 321 located in the same layer are alternately disposed on the TFT substrate 3 near the liquid crystal layer 4.
  • the common electrode 322 and the pixel electrode 321 are alternately arranged. , all have a comb structure.
  • the touch layer on the CF substrate 2 is disposed in a different manner from the existing driving line and the detection line, and the present invention is in the driving line 22 or
  • the detection line 24 is also provided with a comb structure, and the The comb structure is at least partially offset from at least one of the comb structure of the common electrode 322 and the comb structure of the pixel electrode 321 in the same layer.
  • the common electrode 322 and/or the pixel electrode 321 of the TFT substrate 3 are prevented from completely overlapping the drive line 22 or the detection line 24 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the above-mentioned staggering includes partial staggering and complete staggering.
  • the comb structure of the driving line 22 or the detecting line 24 is at least partially comb-shaped with the common electrode 322 located in the same layer and/or Or the comb structure of the pixel electrode 321 is complementary.
  • the material of the driving line 22 and the detecting line 24 is transparent, for example, indium tin oxide or indium oxide, or a combination of indium tin oxide and indium oxide.
  • the common electrode 322, the gate line 33 and the data line 34 are generally selected from metals such as copper and aluminum.
  • a transparent conductive material may be selected, and the pixel electrode 312 is generally selected as a transparent conductive material, and the transparent conductive material may be, for example, Indium tin oxide, or indium oxide, or a combination of indium tin oxide and indium oxide.
  • the drive line 22 or the detection line 24 may be provided with a liquid crystal alignment film made of polyimide in addition to the surface layer of the CF substrate 2.
  • the touch display panel of the second embodiment has substantially the same structure as the touch display panel of the first embodiment, and the difference is that, for the CF substrate 2, different from the way that the driving line 22 and the detecting line 24 are respectively disposed on the two layers of the touch layer, The driving line 22 and the detecting line 24 are formed on one touch layer, and the driving line 22 and the detecting line 24 are separated by the dielectric layer 23 as shown in FIG.
  • the driving line 22 is separated from the detecting line 24, and the spaced portion has a first bridging portion 25 for connecting the spaced detecting lines 24 across the driving line 22.
  • the detection line 24 may also separate the drive line 22, and a second bridge portion is disposed on the partition portion, the second bridge portion spanning the detection line 24 connects the spaced drive lines 22.
  • the comb structure of the drive line 22 includes a comb portion 222 perpendicular to and connected to the bar portion 221; and a comb shape of the detection line 24.
  • the structure includes a bridge tooth portion 242 that is perpendicular to and connected to the bar portion 241.
  • the specific setting manner of the touch layer is: 1) either or both of the comb tooth portion 222 of the drive line 22 and the comb tooth portion 242 of the detection line 24 are offset from the comb tooth portion 3212 of the pixel electrode 321; or 2) the comb tooth portion 222 of the drive line 22 and One or both of the comb-tooth portions 242 of the detection line 24 are offset from the comb-tooth portion 3222 of the common electrode 322; or 3) both the comb-tooth portion 222 of the drive line 22 and the comb-tooth portion 242 of the detection line 24 One or both are simultaneously shifted from the comb tooth portion 321 of the pixel electrode 321 and the comb tooth portion 3222 of the common electrode 322.
  • the comb structure of the drive line 22 and/or the detection line 24 is at least partially offset from the comb structure of the common electrode 322 of the TFT substrate 3 adjacent to the liquid crystal layer 4 and the comb structure of the pixel electrode 321 .
  • the above-mentioned staggering includes partial staggering and complete staggering.
  • the comb-like structure of the driving line 22 and/or the detecting line 24 is at least partially at least partially connected to the common electrode of the TFT substrate 3 near the liquid crystal layer 4.
  • the comb structure of 322 and/or the comb structure of pixel electrode 321 are complementary.
  • the touch display panel of the third embodiment has substantially the same structure as the touch display panel of the first embodiment.
  • the difference is that, for the TFT substrate 3, the common electrode 322 and the gate line 33 are first formed on the glass substrate 31, and then the TFT structure and the pixel electrode 321 are formed. Therefore, the comb tooth portion 3222 and the pixel electrode 321 of the common electrode 322 are formed.
  • the comb portion 3212 may not be formed in one layer, as shown in FIG. 16, and one or more insulating layers such as a passivation layer 37 or the like are disposed therebetween.
  • the specific arrangement of the touch layer is: comb teeth of the line 24
  • the portion 242 is shifted from the comb tooth portion 3212 of the pixel electrode 321 .
  • the specific arrangement of the touch layer is as follows: the comb-shaped teeth of the driving line 22 The portion 222 is shifted from the comb tooth portion 3212 of the pixel electrode 321 .
  • the pixel electrode 321 of the TFT substrate 3 is prevented from completely overlapping the driving line 22 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the specific arrangement of the touch layer is: driving One or both of the comb tooth portion 222 of the wire 22 and the comb tooth portion 242 of the detection wire 24 are offset from the comb tooth portion 3212 of the pixel electrode 321 .
  • the pixel electrode 321 of the TFT substrate 3 is prevented from completely overlapping the detection line 22 and/or the driving line 24 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the comb structure of the driving line 22 and/or the detecting line 24 is at least partially offset from the comb structure of the pixel electrode 321 located adjacent to the liquid crystal layer 4 of the TFT substrate 3, thus avoiding the pixel electrode 321 and CF of the TFT substrate 3.
  • the drive lines 22 and/or the detection lines 24 of the substrate 2 are completely overlapped, reducing parasitic capacitance.
  • the specific arrangement of the touch layer is as follows:
  • the comb portion 242 is offset from the comb portion 3222 of the common electrode 322.
  • the common electrode 322 of the TFT substrate 3 is prevented from completely overlapping the detection line 24 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the specific arrangement of the touch layer is as follows: the comb-shaped teeth of the driving line 22
  • the portion 222 is offset from the comb portion 3222 of the common electrode 322.
  • the specific arrangement of the touch layer is: driving One or both of the comb tooth portion 222 of the wire 22 and the comb tooth portion 242 of the detection wire 24 are offset from the comb tooth portion 3222 of the common electrode 322.
  • the common electrode 322 of the TFT substrate 3 is prevented from completely overlapping the detection line 24 and/or the driving line 22 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the comb structure of the drive line 22 and/or the detection line 24 is at least partially offset from the comb structure of the TFT substrate 3 adjacent to the common electrode 322 of the liquid crystal layer 4, thus avoiding the common electrode 322 and CF of the TFT substrate 3.
  • the drive lines 22 and/or the detection lines 24 of the substrate 2 are completely overlapped, reducing parasitic capacitance.
  • the comb structure of the driving line 22 and/or the detecting line 24 is at least partially offset from the comb structure of the comb structure or the pixel electrode 321 of the TFT substrate 3 adjacent to the common electrode 322 of the liquid crystal layer 4, thus avoiding The common electrode 322 or the pixel electrode 321 of the TFT substrate 3 completely overlaps the drive line 22 and/or the detection line 24 of the CF substrate 2, reducing the parasitic capacitance.
  • the above-mentioned staggering includes partial staggering and complete staggering.
  • the comb-like structure of the driving line 22 and/or the detecting line 24 is at least partially at least partially connected to the common electrode of the TFT substrate 3 near the liquid crystal layer 4.
  • the comb structure of 322 or the comb structure of the pixel electrode 321 is complementary.
  • Embodiment 4 refers to the liquid crystal display of the background art to implement the IPS mode and the FFS mode description part. Compared with the IPS mode, the FFS mode has a high transmittance, because: For the FFS mode, the common electrode and the pixel electrode do not need to be spaced apart.
  • the spacing between the respective electrodes can be reduced, so that a lateral electric field can also be generated on the upper electrode of the upper electrode layer or the upper portion of the pixel electrode, and the liquid crystal molecules on the corresponding electrodes can also be rotated, and are no longer limited to the transverse electric field in the IPS mode. It exists only between the common electrode and the pixel electrode, and there is almost no electric field on each electrode, and the liquid crystal molecules on the respective electrodes cannot be rotated.
  • the FFS-LCD touch display panel with the liquid crystal display mode of the FFS mode is taken as an example to introduce the technical solution of the present invention.
  • the FFS-LCD touch display panel also includes: a relatively set color film (Color
  • TFT substrate 3 Film, CF substrate 2
  • TFT substrate 3 TFT substrate 3
  • liquid crystal layer 4 therebetween. The difference from the IPS-LCD touch display panel is firstly the TFT substrate 3.
  • the TFT substrate 3 of the FFS-LCD touch display panel will be described below. Referring to a plan view of one pixel unit shown in FIG. 17 and a cross-sectional view of FIG. 18 along the ⁇ - ⁇ line in the drawing, the TFT substrate 3 includes a glass substrate 31 and a circuit substrate formed on the glass substrate 31.
  • the circuit board includes data lines 34 intersecting each other, a gate line 33, a TFT transistor formed at the intersection of the two lines, a common electrode (line) 322 substantially parallel to the gate line 33, and a pixel electrode 321 .
  • the gate of the TFT transistor is a portion of the gate line 33
  • the source is a portion of the data line 34
  • the drain is connected to the pixel electrode 321 through a via (not shown).
  • the pixel electrode 321 is a monolithic conductive layer on which an insulating layer 38 and a common electrode 322 are formed from top to bottom.
  • the common electrode 322 has a horizontal bar portion 3221 substantially along a common electrode line and a vertical common electrode line.
  • a comb tooth portion 3222, the comb tooth portion 3222 and the pixel electrode 321 are used for lifting A voltage for rotating liquid crystal molecules.
  • the horizontal bar portion 3221 and the comb tooth portion 3222 form a comb-like structure of the common electrode 322, and the purpose is to provide a discontinuous gap (slit) in the entire block structure to provide an opening through which the electric field passes, and thus,
  • a discontinuous gap may be formed on the common electrode 322, and is not limited to a comb structure.
  • the comb structure of the common electrode 322 is formed on the surface of the TFT substrate 3 close to the liquid crystal layer 4.
  • the protective film 35 may be provided with a material of silicon nitride.
  • the liquid crystal alignment film 36 may be further disposed on the protective film 35, and the material thereof may be polyimide.
  • the glass substrate 31 may be made of a light-transmitting material such as quartz or flexible plastic as needed.
  • the touch layer may include a first touch layer and a second touch layer.
  • the driving line 22 is formed on the first touch layer
  • the detection line 24 is formed on the second touch layer.
  • the electrical layer 23; the drive line 22 and the detection line 24 may also be formed on a layer of touch.
  • a scheme in which the driving line 22 and the detecting line 24 are respectively formed on the two-layer touch layer will be described.
  • the arrangement of the driving lines 22 and the detecting lines 24 is vertically arranged such that the touch signals are detected when the touch body touches the driving line 22 and the detecting line 24 at the intersection position.
  • the driving line 22 and the detecting line 24 formed on the two layers of the touch layer there are two The manner of setting is: 1) the second touch layer formed with the detection line 24 is closer to the liquid crystal layer 4; 2) the first touch layer formed with the driving line 22 may also be closer to the liquid crystal layer 4. It should be noted that one unit formed by the one driving line 22 and one detecting line 24 may correspond to one pixel unit of the TFT substrate 3, or may correspond to a plurality of pixel units.
  • the driving line 22 and the detecting line 24 are all monolithic conductive layers.
  • the driving line 22 or the detecting line 24 is also provided with a comb structure.
  • the bridge-like structure of the drive wire 22 includes a bridge tooth portion 222 that is perpendicular to and connected to the bar portion 221 of the bar portion 221 .
  • the comb structure of the detection line 24 includes a bridge tooth portion 242 that is perpendicular to and connected to the bar portion 241.
  • the common electrode 322 is provided with a comb tooth portion 3222, the pixel electrode 321 is a monolithic structure, and the detecting line 24 is closer to the liquid crystal layer 4.
  • the specific arrangement of the touch layer is: the comb tooth portion 242 of the detecting line 24 and The comb tooth portions 3222 of the common electrode 322 are staggered.
  • the common electrode 322 of the TFT substrate 3 is prevented from completely overlapping the detection line 22 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the common electrode 322 is provided with a comb tooth portion 3222, the pixel electrode 321 is a monolithic structure, and the driving line 22 is closer to the liquid crystal layer 4.
  • the specific arrangement of the touch layer is as follows: the comb tooth portion 222 of the driving line 22 and the common electrode
  • the comb teeth 3222 of 322 are staggered.
  • the common electrode 322 of the TFT substrate 3 and the drive line 22 of the CF substrate 2 are completely overlapped, and the parasitic capacitance is reduced.
  • FIG. 20 provides a top view of the display panel corresponding to one pixel unit and an IV-IV line along 20 in FIG. 20 after the CF substrate 2 and the TFT substrate 3 are aligned up and down.
  • Figure 21 is a cross-sectional view. It can be seen that the comb-tooth portion 3212 of the pixel electrode on the CF substrate 2 and the comb-tooth portion 3222 of the common electrode on the TFT substrate 3 in FIG. 20 and FIG. 21 are respectively shifted from the comb-tooth portion 3222 of the common electrode.
  • the comb structure of the driving line 22 or the detecting line 24 is at least partially offset from the comb structure of the TFT substrate 3 adjacent to the common electrode 322 of the liquid crystal layer 4, thus avoiding the common electrode 322 and the CF substrate 2 of the TFT substrate 3.
  • the drive line 22 or the sense line 24 are completely overlapped, reducing parasitic capacitance.
  • the comb-tooth portion 3222 connected to the horizontal bar portion 3221 of the same common electrode 322 has a plurality of, but it should be noted that, for the common electrode 322, the plurality of connected comb-tooth portions 3222 are not limited to one horizontal bar portion.
  • the 3221 is connected, and may be connected to the plurality of bar portions 3221.
  • the plurality of connected comb-shaped portions 222 are not limited to being connected to one of the horizontal bar portions 221, but may be connected to the plurality of horizontal bar portions 221, similarly, for the detecting line 24, a plurality of connected combs
  • the tooth portion 242 is not limited to being connected to one of the horizontal bar portions 241, and may be connected to the plurality of horizontal bar portions 241.
  • the bar portion 221 and the comb tooth portion 222 form a comb structure of the drive wire 22
  • the bar portion 241 and the comb tooth portion 242 form a comb structure of the detection line 24, and the purpose of each comb structure is Discontinuous gaps (slits) are provided in the respective monolithic structures to provide an opening through which the electric field passes. Therefore, in other embodiments, discontinuous gaps may be formed on the driving lines 22 and the detecting lines 24, respectively, and are not limited to combs. structure.
  • a scheme in which the drive line 22 and the detection line 24 are formed on one touch layer will be described.
  • the drive line 22 and the detection line 24 are isolated by a dielectric layer 23.
  • the driving line 22 and the detecting line 24 are all monolithic conductive layers, this embodiment
  • the driving line 22 or the detecting line 24 is also provided with a comb structure.
  • the comb structure of the drive line 22 includes a comb portion 222 that is perpendicular to and connected to the bar portion 221.
  • the comb structure of the detection line 24 includes a bridge tooth portion 242 that is perpendicular to and connected to the bar portion 241.
  • the common electrode 322 is provided with a comb tooth portion 3222, the pixel electrode 321 is a monolithic structure, and the driving line 22 and the detecting line 24 are disposed on one layer of the touch layer.
  • the specific arrangement of the touch layer is as follows: One or both of the comb tooth portion 222 and the comb tooth portion 242 of the detection line 24 are offset from the comb tooth portion 3222 of the common electrode 322.
  • the common electrode 322 of the TFT substrate 3 is prevented from completely overlapping the detection line 22 and/or the driving line 24 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the comb structure of the drive line 22 or/and the detection line 24 is at least partially offset from the comb structure of the TFT substrate 3 adjacent to the common electrode 322 of the liquid crystal layer 4, thus avoiding the common electrode 322 and CF of the TFT substrate 3.
  • the drive lines 22 and/or the detection lines 24 of the substrate 2 are completely overlapped, reducing parasitic capacitance.
  • the above-mentioned staggering includes partial staggering and complete staggering.
  • the comb-like structure of the driving line 22 and/or the detecting line 24 is at least partially at least partially connected to the common electrode of the TFT substrate 3 near the liquid crystal layer 4.
  • the comb structure of 322 is complementary.
  • the drive line 22 or the detection line 24 may be provided with a liquid crystal alignment film made of polyimide in addition to the surface layer of the CF substrate 2.
  • the FFS-LCD touch display panel of the fifth embodiment has substantially the same structure as the touch display panel of the fourth embodiment, and the difference is that: for the TFT substrate 3, the common electrode 322 is in the same layer as the gate, and the direction is substantially the same, and a whole conductive layer, an insulating layer 38 and a pixel electrode 321 are formed from top to bottom; The pixel electrode is connected to the drain of the 321 through a through hole.
  • the pixel electrode 321 includes a bar 3211 and a comb portion 3212 perpendicular thereto and connected thereto. The comb portion 3212 and the common electrode 322 are used to rotate the liquid crystal molecules. Voltage.
  • the bar portion 3211 and the comb tooth portion 3212 form the comb structure of the pixel electrode 321, and the purpose is to provide a discontinuous gap (slit) in the entire block structure to provide an opening through which the electric field passes. Therefore, in other embodiments, a discontinuous gap may be formed on the pixel electrode 321, and is not limited to a comb structure.
  • a comb structure of the pixel electrode 321 is formed on a surface of the TFT substrate adjacent to the liquid crystal layer 4.
  • a protective film may be disposed on the comb tooth portion 3212 of the pixel electrode 321 .
  • the material may be silicon nitride; further preferably, the protective film may be provided with a polyimide liquid crystal alignment film.
  • the touch layer has two settings: 1) a first touch layer and a second touch layer may be included, the driving line 22 is formed on the first touch layer, and the detection line 24 is formed on the second touch layer, Between the touch layers is a dielectric layer 23; 2) the drive line 22 and the detection line 24 are formed on a touch layer.
  • a scheme in which the driving line 22 and the detecting line 24 are respectively formed on the two-layer touch layer will be described.
  • the arrangement of the driving lines 22 and the detecting lines 24 is vertically arranged such that the touch signals are detected when the touch body touches the driving line 22 and the detecting line 24 at the intersection position.
  • the driving line 22 and the detecting line 24 formed on the two layers of the touch layer there are two The manner of setting is: 1) the second touch layer formed with the detection line 24 is closer to the liquid crystal layer 4; 2) the first touch layer formed with the driving line 22 may also be closer to the liquid crystal layer 4. It should be noted that one unit formed by the one driving line 22 and one detecting line 24 may correspond to one pixel unit of the TFT substrate 3, or may correspond to a plurality of pixel units.
  • the driving line 22 and the detecting line 24 are all monolithic conductive layers.
  • the driving line 22 or the detecting line 24 is also provided with a comb structure.
  • the bridge-like structure of the drive wire 22 includes a bridge tooth portion 222 that is perpendicular to and connected to the bar portion 221 of the bar portion 221 .
  • the comb structure of the detecting line 24 includes a bridge jaw portion 242 that is perpendicular to and connected to the bar portion 241.
  • the pixel electrode 321 is provided with a comb tooth portion 3212, the common electrode 322 is a monolithic structure, and the detecting line 24 is closer to the liquid crystal layer 4.
  • the specific arrangement of the touch layer is: the comb tooth portion 242 of the detecting line 24 and The comb tooth portions 3212 of the pixel electrode 321 are staggered.
  • the pixel electrode 321 of the TFT substrate 3 and the detection line 22 of the CF substrate 2 are completely overlapped, and the parasitic capacitance is reduced.
  • the pixel electrode 321 is provided with a comb tooth portion 3212, the common electrode 322 is a monolithic structure, and the driving line 22 is closer to the liquid crystal layer 4.
  • the specific arrangement of the touch layer is: the comb tooth portion 222 of the driving line 22 and the pixel electrode
  • the comb teeth portion 3212 of 321 is staggered.
  • the comb structure of the driving line 22 or the detecting line 24 is at least partially offset from the comb structure of the pixel electrode 321 located on the TFT substrate 3 close to the liquid crystal layer 4, thus avoiding the pixel electrode 321 and the CF substrate 2 of the TFT substrate 3.
  • the drive lines 22 and/or the sense lines 24 are completely overlapped, reducing parasitic capacitance.
  • the comb tooth portion 3212 connected to the horizontal bar portion 3211 of the same pixel electrode 321 has many
  • the plurality of connected comb-shaped portions 3212 are not limited to being connected to one of the horizontal bar portions 3211, and may be connected to the plurality of horizontal bar portions 3211.
  • the plurality of connected comb-shaped portions 222 are not limited to being connected to one of the horizontal bar portions 221, but may be connected to the plurality of horizontal bar portions 221, similarly, for the detecting line 24, a plurality of connected combs
  • the tooth portion 242 is not limited to being connected to one of the horizontal bar portions 241, and may be connected to the plurality of horizontal bar portions 241.
  • the bar portion 221 and the comb tooth portion 222 form a comb structure of the drive wire 22
  • the bar portion 241 and the comb tooth portion 242 form a comb structure of the detection line 24, and the purpose of each comb structure is Discontinuous gaps (slits) are provided in the respective monolithic structures to provide an opening through which the electric field passes. Therefore, in other embodiments, discontinuous gaps may be formed on the driving lines 22 and the detecting lines 24, respectively, and are not limited to combs. structure.
  • the drive line 22 and the detection line 24 are formed on one touch layer will be described. As shown in FIG. 15, the drive line 22 and the detection line 24 are isolated by a dielectric layer 23.
  • the drive line 22 is spaced apart from the detection line 24, and the partition portion has a first bridge portion 25 for connecting the separation across the drive line 22.
  • the detection line 24 2) the detection line 24 is spaced apart from the drive line 22, and a second bridge is provided on the spaced portion, the second bridge connecting the spaced drive lines 22 across the detection line 24.
  • the driving line 22 and the detecting line 24 are all monolithic conductive layers.
  • the driving line 22 or the detecting line 24 is also provided with a comb structure.
  • the comb structure of the drive wire 22 includes a comb portion 222 that is perpendicular to and connected to the bar portion 221 of the bar portion 221 .
  • the comb structure of the detecting line 24 includes a bridge tooth portion 242 that is perpendicular to and connected to the horizontal bar portion 241.
  • the pixel electrode 321 is provided with a comb tooth portion 3212, and the common electrode 322 has a monolithic structure, and The driving line 22 and the detecting line 24 are disposed in a layer of a touch layer.
  • the specific arrangement of the touch layer is: one or both of the comb tooth portion 222 of the driving line 22 and the comb tooth portion 242 of the detecting line 24
  • the comb tooth portions 3212 of the pixel electrodes 321 are staggered.
  • the pixel electrode 321 of the TFT substrate 3 is prevented from completely overlapping the detection line 22 and/or the driving line 24 of the CF substrate 2, and the parasitic capacitance is reduced.
  • the comb structure of the driving line 22 or/and the detecting line 24 is at least partially offset from the comb structure of the pixel electrode 321 located adjacent to the liquid crystal layer 4 of the TFT substrate 3, thus avoiding the pixel electrodes 321 and CF of the TFT substrate 3.
  • the drive lines 22 and/or the detection lines 24 of the substrate 2 are completely overlapped, reducing parasitic capacitance.
  • the above-mentioned staggering includes partial staggering and complete staggering.
  • the comb-like structure of the driving line 22 and/or the detecting line 24 is at least partially at least partially connected to the common electrode of the TFT substrate 3 near the liquid crystal layer 4.
  • the comb structure of 322 is complementary.
  • the drive line 22 and/or the detection line 24 may be provided with a liquid crystal alignment film made of polyimide in addition to the surface layer of each of the CF substrates 2.

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Abstract

一种触摸显示面板，包括：相对设置的CF基板与TFT基板、及两者之间的液晶层，其中，所述TFT基板靠近液晶层设置有具有梳状结构的公共电极和/或具有梳状结构的像素电极，所述CF基板靠近液晶层设置有触摸层，所述触摸层包括相互绝缘的驱动线与检测线，所述驱动线和/或所述检测线具有梳状结构，且所述梳状结构至少部分与所述公共电极的梳状结构和/或像素电极的梳状结构错开。采用本发明的技术方案，可以减小触摸层的驱动线、检测线分别与具有狭缝的上部电极层（或隔开的公共电极和像素电极）的寄生电容，提高触摸显示面板的检测灵敏度。

Description

触摸显示面板
本申请要求于 2012 年 7 月 20 日提交中国专利局、 申请号为 201210253996.8、 发明名称为 "触摸显示面板"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
本发明涉及液晶显示技术领域， 尤其涉及一种触摸显示面板。
背景技术
液晶（ Liquid Crystal ), 由于其良好的电可控性， 越来越多地使用在显示 面板中。 液晶显示面板， 根据液晶的显示方式， 目前广泛应用的有扭曲 ( Twisted Nematic, TN )显示方式， 但该方式在显示原理上， 视角有所限制。 作为该问题的解决方法， 已知的有在同一衬底上形成像素电极与公共电极， 并将电压施加于该像素电极与公共电极之间，令几乎平行于衬底的电场产生， 而在大致上平行于衬底的面内驱动液晶分子的横向电场方式。 横向电场方式 已知有平面转换（In-Plane Switching, IPS )方式与边缘场开关（ Fringe Field Swithing, FFS ) 方式。 IPS 方式是组合梳状（Comb-shaped ) 的像素电极与 梳状的公共电极而配置， FFS方式是针对于同一衬底上的隔着绝缘层而形成 的上部电极层与下部电极层， 将其中一者分配为公共电极， 另一者分配为像 素电极， 且上部电极层设置成梳状结构等， 其中形成的狭缝（slit )作为让电 场通过的开口部。 目前， 使用液晶作为显示器（LCD ) 的触摸显示面板使用非常广泛， 它 使得用户用手或其它物体接触触摸屏， 从而向使用该显示面板的装置输入信 息， 这样可以减少或消除用户对其它输入设备（例如键盘、 鼠标、 遥控器等） 的依赖， 方便用户的操作。
早期的触摸显示面板为电阻式， 触摸体与显示面板在接触位置的压力使 得两层导电膜接触， 因而闭合某个开关并送出触摸信号。 但该电阻式触摸显 示面板在长期按压后，该两层导电膜随着不断按压变形而性能下降甚至损坏， 这容易造成触摸信号的误判断。针对上述缺陷， 电容式触摸显示面板被提出。 该电容式触摸显示面板的触摸层基本结构， 如图 1所示， 包括： 介电材 质、 该介电材质隔绝的两导电膜， 下导电膜上设置有驱动线 11 , 上导电膜上 设置有检测线 12。 在无触摸体触摸的情况下， 该触摸层的等效电路如图 2所 示， 驱动线 11、 检测线 12之间形成电容 d , 且各自具有等效电阻 R2与 R3, 检测线 12通过电阻 接地， 驱动线 11、 检测线 12各自与显示面板其它导 电层之间具有寄生电容 C2、C3,驱动线 11寄生电容 C2与电阻 R4串联后接地， 检测线 12寄生电容 C3与电阻 R5串联后接地。 此时， 在驱动线 11施加交流 信号 1。， 在检测线 12上便可检测对应信号的电压 Vs。 当触摸体 (例如手指 ) 触摸到触摸层， 例如检测线 12时， 如图 3所示， 该触摸层的等效电路如图 4 所示，手指在检测线 12上施加一个接地电容 C5,且该手指的等效电阻为 R6。 此时， 在驱动线 11仍施加交流的信号 1。， 由于接地电容 C5、 电阻 R6与电容 三者串联， 因而在检测线 12上检测到的对应信号的电压 ¼会变小。综上， 获取检测线 12上的电压大小便可获知触摸层是否被触摸。 结合上述的 IPS、 FFS液晶显示器与电容式触摸显示面板， 形成了 IPS、
FFS液晶显示器（FFS-LCD )触摸显示面板， 包括： 彩膜（ Color Film, CF ) 基板、 TFT基板， 以及两者之间的液晶层， 其中， 触摸层设置在 CF基板上。 然而， 对于上述的 FFS-LCD触摸显示面板， 驱动线和检测线布满整层， 这造 成驱动线、检测线分别与具有梳状结构的上部电极层（像素电极或公共电极） 完全交叠， 而前后两者之间充满液晶， 该液晶相当于介电材质， 驱动线、 检 测线相当于一个极板， 有狭缝的上部电极层相当于另一个极板， 因此， 驱动 线、 检测线分别与具有梳状结构的上部电极层之间存在寄生电容。 结合上述 的触摸检测方式， 该寄生电容的存在会造成检测线获得的电压 Vs变小， 因而 会降低触摸显示面板的检测灵敏度。 对于 IPS-LCD触摸显示面板， 驱动线和 检测线布满整层也会造成驱动线和检测线与隔开的公共电极和像素电极之间 存在寄生电容， 降低触摸显示面板的检测灵敏度。
基于此， 本发明提出一种触摸显示面板， 以改善上述问题。
发明内容
本发明解决的问题是提出一种触摸显示面板， 以减小驱动线、 检测线分 别与具有梳状结构的上部电极层（或隔开的公共电极和像素电极）的寄生电容, 提高触摸显示面板的检测灵敏度。
为解决上述问题， 本发明提供一种触摸显示面板， 包括： 相对设置的 CF 基板与 TFT基板、 及两者之间的液晶层， 其中， 所述 TFT基板靠近液晶层 设置有具有梳状结构的公共电极和 /或具有梳状结构的像素电极， 所述 CF基 板靠近液晶层设置有触摸层， 所述触摸层包括相互绝缘的驱动线与检测线， 所述驱动线和 /或所述检测线具有梳状结构，且所述梳状结构至少部分与所述 公共电极的梳状结构和 /或像素电极的梳状结构错开。
可选地，所述驱动线和 /或所述检测线的梳状结构与所述公共电极的梳状 结构和 /或像素电极的梳状结构互补。
可选地， 所述驱动线与所述检测线形成在同一层， 所述驱动线垂直所述 检测线。
可选地， 所述驱动线隔开所述检测线， 且隔开部分上具有第一桥接部， 所述第一桥接部跨过所述驱动线连接所述隔开的检测线。
可选地， 所述检测线隔开所述驱动线， 且隔开部分上具有第二桥接部， 所述第二桥接部跨过所述检测线连接所述隔开的驱动线。
可选地， 所述触摸层包括相互绝缘的第一触摸层与第二触摸层， 所述驱 动线形成在第一触摸层， 所述检测线形成在第二触摸层。
可选地， 所述第二触摸层比所述第一触摸层更靠近所述液晶层， 所述检 测线具有与所述公共电极的梳状结构和 /或像素电极的梳状结构错开的梳状 结构。
可选地， 所述第一触摸层比所述第二触摸层更靠近所述液晶层， 所述驱 动线具有与所述公共电极的梳状结构和 /或像素电极的梳状结构错开的梳状 结构。
可选地， 所述公共电极设置在所述 TFT基板靠近液晶层的表面， 所述公 共电极具有梳状结构，所述驱动线和 /或所述检测线的梳状结构至少部分与所 述公共电极的梳状结构错开。
可选地， 所述像素电极设置在所述 TFT基板靠近液晶层的表面， 所述像 素电极具有梳状结构，所述驱动线和 /或所述检测线的梳状结构至少部分与所 述像素电极的梳状结构错开。
可选地，所述公共电极和像素电极设置在所述 TFT基板靠近液晶层的表 面， 所述公共电极和像素电极具有隔开的梳状结构， 所述驱动线和 /或所述检 测线的梳状结构至少部分与所述公共电极的梳状结构、 所述像素电极的梳状 结构均错开。
可选地， 所述驱动线与所述检测线的材质透明。
可选地， 所述公共电极或像素电极的材质透明。
可选地， 所述驱动线与所述检测线的材质为氧化铟锡、 或氧化铟辞、 或 氧化铟锡和氧化铟辞的组合。
与现有技术相比， 本发明具有以下优点：
1 )针对 IPS-LCD触摸显示面板，位于 TFT基板靠近液晶层的公共电极和像 素电极均具有梳状结构， 对于 CF基板上的触摸层的设置方式， 不同于现有的 驱动线和检测线布满整层的方案， 本发明在该驱动线和 /或检测线也设置梳状 结构， 且该梳状结构至少部分与位于 TFT基板靠近液晶层的公共电极的梳状结 构和像素电极的梳状结构至少一个错开， 如此， 避免了 TFT基板的公共电极和 /或像素电极与 CF基板的驱动线和 /或检测线完全重叠， 减小了寄生电容； 针对 FFS-LCD触摸显示面板， TFT基板靠近液晶层设置有具有梳状结构的 公共电极或具有梳状结构的像素电极， 对于 CF基板上的触摸层的设置方式， 不同于现有的驱动线和检测线布满整层的方案， 本发明在该驱动线和 /或检测 线也设置梳状结构， 且该梳状结构至少部分与位于 TFT基板靠近液晶层的公共 电极的梳状结构或像素电极的梳状结构中的一个错开， 如此， 避免了 TFT基板 的公共电极和 /或像素电极与 CF基板的驱动线和 /或检测线完全重叠， 减小了寄 生电容。
2 )可选方案中， 针对 IPS-LCD触摸显示面板， 驱动线和 /或检测线的梳 状结构至少部分与位于 TFT基板靠近液晶层的公共电极的梳状结构和像素 电极的梳状结构至少一个不仅错开， 而且互补， 更进一步降低了 TFT基板的 公共电极和 /或像素电极与 CF基板的驱动线和 /或检测线之间的寄生电容； 针对 FFS-LCD触摸显示面板， 驱动线和 /或检测线的梳状结构至少部分 与位于 TFT基板靠近液晶层的公共电极的梳状结构或像素电极的梳状结构 中的一个不仅错开， 而且互补， 更进一步降低了 TFT基板的公共电极和 /或 像素电极与 CF基板的驱动线和 /或检测线之间的寄生电容。
附图说明
图 1是现有的电容式触摸显示面板的触摸层未被触摸时的结构示意图； 图 2是图 1的等效电路图； 图 3是现有的电容式触摸显示面板的触摸层被触摸时的结构示意图； 图 4是图 3的等效电路图；
图 5是本发明的触摸显示面板的结构示意图；
图 6是 IPS-LCD触摸显示面板的 TFT基板的一个像素单元的俯视图； 图 7是图 6中沿 I - I线的剖视图；
图 8是图 7结构的优化结构剖视图；
图 9是本发明中驱动线的结构示意图；
图 10是本发明中检测线的结构示意图；
图 11是 CF基板与图 6的 TFT基板的一个像素单元形成的触摸面板的俯 视图； 图 12是图 11中沿 II - II线的剖视图； 图 13是 IPS-LCD触摸显示面板的另一种 TFT基板的一个像素单元的俯 视图； 图 14是本发明的触摸层的结构示意图； 图 15是图 14中的 Q区域的放大图； 图 16是 IPS-LCD触摸显示面板的再一种 TFT基板的截面图； 图 17是 FFS-LCD触摸显示面板的 TFT基板的一个像素单元的俯视图； 图 18是图 17中沿 ΠΙ-ΠΙ线的剖视图； 图 19是图 18结构的优化结构剖视图； 图 20是 CF基板与图 17的 TFT基板的一个像素单元形成的触摸面板的 俯视图；
图 21是图 20中沿 IV-IV线的剖视图。
具体实施方式 为使本发明的上述目的、 特征和优点能够更加明显易懂， 下面结合附图 对本发明的具体实施方式做详细的说明。 由于本发明重在解释原理， 因此， 未按比例制图。 为方便理解本发明的技术方案，以下列出本发明中出现的所有附图标记。 驱动线 11 检测线 12
CF基板 2 TFT基板 3 液晶层 4 玻璃基板 31 电极层 32 栅线 33 像素电极 321 像素电极横杠部 3211 像素电极梳齿部 3212 公共电极 322 公共电极横杠部 3221 公共电极桥 υ齿部 3222 保护膜 35 取向膜 36 驱动线 22 检测线 24 驱动线横杠部 221 驱动线桥 υ齿部 222 检测线横杠部 241 检测线桥 υ齿部 242 钝化层 37 绝缘层 38 介电层 23 玻璃基板 21 实施例一
本实施例一以液晶显示方式为 IPS方式的 IPS-LCD触摸显示面板为例 介绍本发明的技术方案。
-照图 5 所示， IPS-LCD触摸显示面板包括： 相对设置的彩膜（Color Film, CF )基板 2、 TFT基板 3 , 以及两者之间的液晶层 4。 首先介绍 TFT基板 3 , 参照图 6所示的一个像素单元的俯视图及该图中 沿 I - I线的剖视图图 7所示， TFT基板 3包括玻璃基板 31 , 形成在玻璃基 板 31上的电路基板。 该电路基板靠近液晶层 4的表面为电极层 32, 包括公 共电极 322与像素电极 321 , 用于对液晶施加使其旋转的电压。 该电路基板包括相互交叉的数据线 34、栅线 33、两线交叉处形成的 TFT 晶体管及形成在两线限定的区域的像素电极 321 , 此外， 还包括与栅线 33同 层且走线大致平行的公共电极线（未标示 ),该公共电极线电连接的公共电极 322。 该 TFT晶体管的栅极为栅线 33的部分， 源极为数据线 34的部分， 漏 极通过通孔（未标示 )与像素电极 321相连，像素电极 321包括横杠部（ bar ) 3211及与其垂直且相连的梳齿部 3212,与像素电极 321形成在同一层的还有 公共电极 322的部分， 该公共电极 322具有沿公共电极线大致走线的横杠部 3221与垂直公共电极线大致走向的梳齿部 3222。 该梳齿部 3222与像素电极 321的梳齿部 3212交替设置用于提供使液晶分子转动的电压。
上述结构中， 横杠部 3221与梳齿部 3222形成了该公共电极 322的梳状 结构， 横杠部 3211与梳齿部 3212形成了像素电极 321的梳状结构， 各自梳 状结构的目的是在各自整块结构上设置不连续间隙（狭缝），提供电场通过的 开口部。 因而， 其它实施例中， 在公共电极 322与像素电极 321上分别形成 不连续间隙即可， 不限于为梳状结构。
此外，该公共电极 322的梳状结构与像素电极 321的梳状结构形成在 TFT 基板 3靠近液晶层 4的表面， 为提高两者的使用寿命， 如图 8所示， 该公共 电极 322的梳齿部 3222与像素电极 321的梳齿部 3212上可以设置保护膜 35 , 其材质可以为氮化硅；进一步优化地，该保护膜 35上还可以设置液晶取向膜 36, 其材质可以为聚酰亚胺。
需要说明的是，玻璃基板 31也可以根据需要采用石英、柔性塑料等透光 材质制作。
以下介绍 CF基板 2。 参照图 5所示， 该 CF基板 2包括玻璃基板 21 , 设 置在该玻璃基板 21表面的滤光层（未图示 )、 挡光层（未图示）、 以及靠近液 晶层 4的触摸层。该触摸层包括第一触摸层与第二触摸层，驱动线 22形成在 第一触摸层、 检测线 24形成在第二触摸层， 两触摸层之间为介电层 23。
优选地，在两触摸层上，驱动线 22与检测线 24的布置方式为垂直设置， 这样， 在触摸体触摸驱动线 22与检测线 24的交叉位置时， 该触控信号被检 测。
本实施例一中， 形成有检测线 24的第二触摸层更靠近液晶层 4, 其它实 施例中， 形成有驱动线 22的第一触摸层也可以更靠近液晶层 4。 需要说明的是， 该一条驱动线 22与一条检测线 24形成的一个单元可以 对应 TFT基板 3的一个像素单元， 也可以对应多个像素单元。
不同于现有技术的驱动线 22、检测线 24都为整块导电层的情况， 本实施例 一中， 该驱动线 22或检测线 24也设置梳状结构。 具体地， 参照图 9所示， 该驱 动线 22的桥 υ状结构包括横杠部 221与该横杠部 221垂直且相连的桥 υ齿部 222。 参 照图 10所示，检测线 24的梳状结构包括横杠部 241与该横杠部 241垂直且相连的 桥 υ齿部 242。 此外，针对公共电极 322的梳齿部 3222与像素电极 321的梳齿部 3212同层交 替设置、 且检测线 24更靠近液晶层 4的情况， 检测线 24的具体设置方式为： 1 ) 检测线 24的梳齿部 242与像素电极 321的梳齿部 3212错开； 或 2 )检测线 24的梳 齿部 242与公共电极 322的梳齿部 3222错开； 或 3 )检测线 24的梳齿部 242与像素 电极 321的梳齿部 321、 公共电极 322的梳齿部 3222均同时错开。 如此， 避免了 TFT基板 3的公共电极 322和像素电极 321与 CF基板 2的检测线 22完全重叠，减小 了寄生电容。
针对公共电极 322的梳齿部 3222与像素电极 321的梳齿部 3212同层交替设 置、 且驱动线 22更靠近液晶层 4的情况， 驱动线 22的具体设置方式为： 1 )驱动 线 22的梳齿部 222与像素电极 321的梳齿部 3212错开； 或 2 )驱动线 22的梳齿部 222与公共电极 322的梳齿部 3222错开； 或 3 )驱动线 22的梳齿部 222与像素电极 321的梳齿部 321、 公共电极 322的梳齿部 3222均同时错开。 如此， 避免了 TFT 基板 3的公共电极 322和像素电极 321与 CF基板 2的驱动线 22完全重叠， 减小了 寄生电容。 针对上述 3 ) 情况， 为清楚显示本发明实施例一的技术方案， 图 11 提供了 CF基板 2与 TFT基板 3上下对位后，对应一个像素单元的显示面板的俯视 图及沿 11中 II - II线的剖视图图 12。 可以看出， 图 11与图 12中 CF基板 2上的驱动 线 22与 TFT基板 3上分别位于两层的像素电极的梳齿部 3212与公共电极的梳齿 部 3222分别错开。
总之， 该驱动线 22或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的公共电极 322的梳状结构和 /或像素电极 321的梳状结构错开， 如此， 避免了 TFT基板 3的公共电极 43322和像素电极 321与 CF基板 2的驱动线 22和 /或 检测线 24完全重叠， 减小了寄生电容。 如图 6所示， 对于公共电极 322, 其横杠部 3221位于梳齿部 3222的一 端， 可以理解的是， 为形成不连续间隙， 该横杠部 3221 不限于位于梳齿部 3222的端头， 也可以如图 13所示， 形成在桥 υ齿部 3222的中部。 此外， 与同一公共电极 322横杠部 3221相连的梳齿部 3222、 与同一像 素电极 321横杠部 3211相连的梳齿部 3212具有多个， 但需说明的是， 对于 公共电极 322, 多个相连的梳齿部 3222不限于与一个横杠部 3221相连， 也 可以与多个横杠部 3221相连。 类似地， 对于像素电极 321 , 多个相连的梳齿 部 3212不限于与一个横杠部 3211相连，也可以与多个横杠部 3211相连。相 应地，对于驱动线 22 ,多个相连的梳齿部 222不限于与一个横杠部 221相连， 也可以与多个横杠部 221相连， 类似地， 对于检测线 24, 多个相连的梳齿部 242不限于与一个横杠部 241相连， 也可以与多个横杠部 241相连。 类似地，横杠部 221与梳齿部 222形成了该驱动线 22的梳状结构，横杠 部 241与梳齿部 242形成了检测线 24的梳状结构，各自梳状结构的目的是在 各自整块结构上设置不连续间隙（狭缝）， 提供电场通过的开口部， 因而， 其 它实施例中， 在驱动线 22与检测线 24上分别形成不连续间隙即可， 不限于 为梳状结构。
综上，对于本实施例一的 IPS-LCD触摸显示面板，位于 TFT基板 3靠近液晶 层 4交替设置有位于同层的公共电极 322和像素电极 321 ,该公共电极 322和像素 电极 321由于交替设置， 均具有梳状结构。 针对上述位于同层的公共电极 322 和像素电极 321 , CF基板 2上的触摸层的设置方式， 不同于现有的驱动线和检 测线布满整层的方案， 本发明在该驱动线 22或检测线 24也设置梳状结构，且该 梳状结构至少部分与位于同层的公共电极 322的梳状结构和像素电极 321的梳 状结构至少一个错开。如此，避免了 TFT基板 3的公共电极 322和 /或像素电极 321 与 CF基板 2的驱动线 22或检测线 24完全重叠， 减小了寄生电容。
上述错开包括部分错开与完全错开， 为增加平面内电极设置的数量，提高 利用率， 该驱动线 22或检测线 24的梳状结构至少部分与位于同层的公共电极 322的梳状结构和 /或像素电极 321的梳状结构互补。
本实施例一中， 为增强透光率， 驱动线 22与检测线 24的材质透明， 例 如可选氧化铟锡、或氧化铟辞、或氧化铟锡和氧化铟辞的组合。公共电极 322、 栅线 33及数据线 34—般选择铜、 铝等金属， 为提高透光率， 也可以选择透 明导电材质， 像素电极 312—般选择透明导电材质， 透明导电材质例如也可 以为氧化铟锡、 或氧化铟辞、 或氧化铟锡和氧化铟辞的组合。 该驱动线 22或检测线 24除了各自位于 CF基板 2的表层， 其上还可以 设置材质为聚酰亚胺的液晶取向膜。
实施例二 本实施例二的触摸显示面板与实施例一的触摸显示面板结构大致相同， 区别在于： 对于 CF基板 2, 不同于驱动线 22和检测线 24分别设置在两层触 摸层的方式，采用在一层触摸层上形成驱动线 22与检测线 24,如图 14所示， 该驱动线 22与检测线 24之间通过介电层 23隔绝。 此外， 本实施例二中， 驱 动线 22隔开了检测线 24, 隔开部分上具有第一桥接部 25 , 用以跨过该驱动 线 22连接所述隔开的检测线 24。 其它实施例中， 检测线 24也可以隔开所述 驱动线 22, 且在隔开部分上设置第二桥接部， 该第二桥接部跨过所述检测线 24连接所述隔开的驱动线 22。
如图 15所示的图 14中的 Q区域的放大图， 该驱动线 22的梳状结构包 括横杠部 221与该横杠部 221垂直且相连的梳齿部 222;检测线 24的梳状结 构包括横杠部 241与该横杠部 241垂直且相连的桥 υ齿部 242。
此外，针对公共电极 322的梳齿部 3222与像素电极 321的梳齿部 3212同层交 替设置、且驱动线 22与检测线 24设置在一层触摸层的情况，触摸层的具体设置 方式为： 1 )驱动线 22的梳齿部 222与检测线 24的梳齿部 242两者之一或两者均 与像素电极 321的梳齿部 3212错开； 或 2 )驱动线 22的梳齿部 222与检测线 24的 梳齿部 242两者之一或两者均与公共电极 322的梳齿部 3222错开； 或 3 )驱动线 22的梳齿部 222与检测线 24的梳齿部 242两者之一或两者均与像素电极 321的梳 齿部 321、 公共电极 322的梳齿部 3222同时错开。 如此， 避免了 TFT基板 3的公 共电极 322和 /或像素电极 321与 CF基板 2的检测线 22和 /或驱动线 24完全重叠， 减小了寄生电容。
总之， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基 板 3靠近液晶层 4的公共电极 322的梳状结构和像素电极 321的梳状结构至 少一个错开。
上述错开包括部分错开与完全错开， 为增加平面内电极设置的数量，提高 利用率， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的公共电极 322的梳状结构和 /或像素电极 321的梳状结构互补。 实施例三
本实施例三的触摸显示面板与实施例一的触摸显示面板结构大致相同， 区别在于： 对于 TFT基板 3 , 由于该公共电极 322与栅线 33首先形成在玻 璃基板 31上， 之后再形成 TFT结构及像素电极 321 , 因而， 该公共电极 322 的梳齿部 3222与像素电极 321的梳齿部 3212也可以不形成在一层，如图 16 所示， 两者之间设置一层或多层绝缘层， 例如钝化层 37等。
针对像素电极 321的梳齿部 3212相对公共电极 322的梳齿部 3222更靠近液 晶层 4、 且检测线 24更靠近液晶层 4的情况， 触摸层的具体设置方式为： 测线 24 的梳齿部 242与像素电极 321的梳齿部 3212错开。 如此， 避免了 TFT基板 3的像 素电极 321与 CF基板 2的检测线 22完全重叠， 减小了寄生电容。
针对像素电极 321的梳齿部 3212相对公共电极 322的梳齿部 3222更靠近液 晶层 4、 且驱动线 22更靠近液晶层 4的情况， 触摸层的具体设置方式为： 驱动线 22的梳齿部 222与像素电极 321的梳齿部 3212错开。 如此， 避免了 TFT基板 3的 像素电极 321与 CF基板 2的驱动线 22完全重叠， 减小了寄生电容。
针对像素电极 321的梳齿部 3212相对公共电极 322的梳齿部 3222更靠近液 晶层 4、 且驱动线 22与检测线 24设置在一层触摸层的情况， 触摸层的具体设置 方式为：驱动线 22的梳齿部 222与检测线 24的梳齿部 242两者之一或两者均与像 素电极 321的梳齿部 3212错开。 如此， 避免了 TFT基板 3的像素电极 321与 CF基 板 2的检测线 22和 /或驱动线 24完全重叠， 减小了寄生电容。
总之， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠 近液晶层 4的像素电极 321的梳状结构错开， 如此， 避免了 TFT基板 3的像素电 极 321与 CF基板 2的驱动线 22和 /或检测线 24完全重叠， 减小了寄生电容。
针对公共电极 322的梳齿部 3222相对像素电极 321的梳齿部 3212更靠近液 晶层 4、 且检测线 24更靠近液晶层 4的情况， 触摸层的具体设置方式为： 测线 24 的梳齿部 242与公共电极 322的梳齿部 3222错开。 如此， 避免了 TFT基板 3的公 共电极 322与 CF基板 2的检测线 24完全重叠， 减小了寄生电容。
针对公共电极 322的梳齿部 3222相对像素电极 321的梳齿部 3212更靠近液 晶层 4、 且驱动线 22更靠近液晶层 4的情况， 触摸层的具体设置方式为： 驱动线 22的梳齿部 222与公共电极 322的梳齿部 3222错开。 如此， 避免了 TFT基板 3的 公共电极 322与 CF基板 2的驱动线 22完全重叠， 减小了寄生电容。
针对公共电极 322的梳齿部 3222相对像素电极 321的梳齿部 3212更靠近液 晶层 4、 且驱动线 22与检测线 24设置在一层触摸层的情况， 触摸层的具体设置 方式为：驱动线 22的梳齿部 222与检测线 24的梳齿部 242两者之一或两者均与公 共电极 322的梳齿部 3222错开。 如此， 避免了 TFT基板 3的公共电极 322与 CF基 板 2的检测线 24和 /或驱动线 22完全重叠， 减小了寄生电容。
总之， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠 近液晶层 4的公共电极 322的梳状结构错开， 如此， 避免了 TFT基板 3的公共电 极 322与 CF基板 2的驱动线 22和 /或检测线 24完全重叠， 减小了寄生电容。
综上， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠 近液晶层 4的公共电极 322的梳状结构或像素电极 321的梳状结构错开， 如此， 避免了 TFT基板 3的公共电极 322或像素电极 321与 CF基板 2的驱动线 22和 /或检 测线 24完全重叠， 减小了寄生电容。
上述错开包括部分错开与完全错开， 为增加平面内电极设置的数量，提高 利用率， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的公共电极 322的梳状结构或像素电极 321的梳状结构互补。 实施例四 参照背景技术的液晶显示实现 IPS方式与 FFS方式描述部分，相对于 IPS 方式， FFS方式的透光率较高， 这是因为： 对于 FFS方式， 由于公共电极与 像素电极不需间隔设置， 因而各自之间的间距可以减小， 这样， 位于上部电 极层的公共电极或像素电极上部也可以产生横向电场， 相应电极上的液晶分 子也可以旋转， 而不再局限于 IPS方式中横向电场只存在于公共电极与像素 电极之间， 而各自电极上几乎无电场， 各自电极上的液晶分子无法旋转。 本实施例四以液晶显示方式为 FFS方式的 FFS-LCD触摸显示面板为例， 介绍本发明的技术方案。
仍参照图 5所示， FFS-LCD触摸显示面板也包括：相对设置的彩膜（ Color
Film, CF )基板 2、 TFT基板 3 , 以及两者之间的液晶层 4。 与 IPS-LCD触 摸显示面板的区别首先在于 TFT基板 3。
以下介绍 FFS-LCD触摸显示面板的 TFT基板 3。 参照图 17所示的一个 像素单元的俯视图及该图中沿 ΠΙ-ΠΙ线的剖视图图 18所示， TFT基板 3包括 玻璃基板 31 , 形成在玻璃基板 31上的电路基板。 该电路基板包括相互交叉 的数据线 34、 栅线 33、 两线交叉处形成的 TFT晶体管、 与栅线 33走线大致 平行的公共电极（线） 322及像素电极 321。 该 TFT晶体管的栅极为栅线 33 的部分， 源极为数据线 34的部分， 漏极通过通孔（未标示 )与像素电极 321 相连。 像素电极 321为整块导电层， 其上自上而下地形成有绝缘层 38、 公共 电极 322,该公共电极 322具有沿公共电极线大致走线的横杠部 3221与垂直 公共电极线大致走向的梳齿部 3222, 该梳齿部 3222与像素电极 321用于提 供使液晶分子转动的电压。
上述结构中， 横杠部 3221与梳齿部 3222形成了该公共电极 322的梳状 结构， 目的是在整块结构上设置不连续间隙（狭缝），提供电场通过的开口部， 因而， 其它实施例中， 在公共电极 322上形成不连续间隙即可， 不限于为梳 状结构。
此外，该公共电极 322的梳状结构形成在 TFT基板 3靠近液晶层 4的表 面， 为提高公共电极 322的梳状结构的使用寿命， 如图 19所示， 该公共电极 322的梳齿部 3222上可以设置保护膜 35 ,其材质可以为氮化硅；进一步优化 地， 该保护膜 35上还可以设置液晶取向膜 36, 其材质可以为聚酰亚胺。 需要说明的是，玻璃基板 31也可以根据需要采用石英、柔性塑料等透光 材质制作。
以下介绍 CF基板 2。 与实施例一、二类似， 该触摸层可以包括第一触摸 层与第二触摸层， 驱动线 22形成在第一触摸层、 检测线 24形成在第二触摸 层， 两触摸层之间为介电层 23 ; 驱动线 22与检测线 24也可以形成在一层触 摸层上。 以下先介绍驱动线 22与检测线 24分别形成在两层触摸层上的方案。 优选地，在两触摸层上，驱动线 22与检测线 24的布置方式为垂直设置， 这样， 在触摸体触摸驱动线 22与检测线 24的交叉位置时， 该触控信号被检 测。
本实施例四中， 对于形成在两层触摸层的驱动线 22与检测线 24 , 有两 种设置方式， 分别为： 1 )形成有检测线 24的第二触摸层更靠近液晶层 4; 2 ) 形成有驱动线 22的第一触摸层也可以更靠近液晶层 4。 需要说明的是， 该一条驱动线 22与一条检测线 24形成的一个单元可以 对应 TFT基板 3的一个像素单元， 也可以对应多个像素单元。
不同于现有技术的驱动线 22、检测线 24都为整块导电层的情况， 本实施例 四中， 该驱动线 22或检测线 24也设置梳状结构。 具体地， 仍参照图 9所示， 该 驱动线 22的桥 υ状结构包括横杠部 221与该横杠部 221垂直且相连的桥 υ齿部 222。 仍参照图 10所示，检测线 24的梳状结构包括横杠部 241与该横杠部 241垂直且相 连的桥 υ齿部 242。
此外， 针对公共电极 322设置有梳齿部 3222、 像素电极 321为整块结构、 且 检测线 24更靠近液晶层 4的情况， 触摸层的具体设置方式为： 检测线 24的梳齿 部 242与公共电极 322的梳齿部 3222错开。 如此， 避免了 TFT基板 3的公共电极 322与 CF基板 2的检测线 22完全重叠， 减小了寄生电容。
针对公共电极 322设置有梳齿部 3222、像素电极 321为整块结构、且驱动线 22更靠近液晶层 4的情况， 触摸层的具体设置方式为： 驱动线 22的梳齿部 222 与公共电极 322的梳齿部 3222错开。 如此， 避免了 TFT基板 3的公共电极 322与 CF基板 2的驱动线 22完全重叠， 减小了寄生电容。 针对上述情况， 为清楚显示 本发明实施例四的技术方案， 图 20提供了 CF基板 2与 TFT基板 3上下对位后，对 应一个像素单元的显示面板的俯视图及沿 20中 IV - IV线的剖视图图 21。 可以看 出，图 20与图 21中 CF基板 2上的驱动线 22与 TFT基板 3上分别位于两层的像素电 极的梳齿部 3212与公共电极的梳齿部 3222分别错开。 总之， 该驱动线 22或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的公共电极 322的梳状结构错开， 如此， 避免了 TFT基板 3的公共电极 322与 CF基板 2的驱动线 22或检测线 24完全重叠， 减小了寄生电容。
可以理解的是， 与同一公共电极 322横杠部 3221相连的梳齿部 3222具有多 个， 但需说明的是， 对于公共电极 322 , 多个相连的梳齿部 3222不限于与一个 横杠部 3221相连， 也可以与多个横杠部 3221相连。 相应地， 对于驱动线 22, 多 个相连的梳齿部 222不限于与一个横杠部 221相连， 也可以与多个横杠部 221相 连， 类似地， 对于检测线 24 , 多个相连的梳齿部 242不限于与一个横杠部 241 相连， 也可以与多个横杠部 241相连。 类似地，横杠部 221与梳齿部 222形成了该驱动线 22的梳状结构，横杠 部 241与梳齿部 242形成了检测线 24的梳状结构，各自梳状结构的目的是在 各自整块结构上设置不连续间隙（狭缝）， 提供电场通过的开口部， 因而， 其 它实施例中， 在驱动线 22与检测线 24上分别形成不连续间隙即可， 不限于 为梳状结构。 以下接着介绍驱动线 22与检测线 24形成在一层触摸层上的方案。
仍参照图 15所示， 该驱动线 22与检测线 24之间通过介电层 23隔绝。 驱动线 22与检测线 24的隔开方式有两种： 1 )驱动线 22隔开检测线 24, 隔 开部分上具有第一桥接部 25 , 用以跨过该驱动线 22连接所述隔开的检测线 24; 2 )检测线 24隔开驱动线 22, 且在隔开部分上设置第二桥接部， 该第二 桥接部跨过所述检测线 24连接所述隔开的驱动线 22。
不同于现有技术的驱动线 22、检测线 24都为整块导电层的情况， 本实施例 四中， 该驱动线 22或检测线 24也设置梳状结构。 具体地， 参照图 9所示， 该驱 动线 22的梳状结构包括横杠部 221与该横杠部 221垂直且相连的梳齿部 222。 参 照图 10所示，检测线 24的梳状结构包括横杠部 241与该横杠部 241垂直且相连的 桥 υ齿部 242。
此外， 针对公共电极 322设置有梳齿部 3222、 像素电极 321为整块结构、 且 驱动线 22与检测线 24设置在一层触摸层的情况，触摸层的具体设置方式为： 驱 动线 22的梳齿部 222与检测线 24的梳齿部 242两者之一或两者均与公共电极 322 的梳齿部 3222错开。 如此， 避免了 TFT基板 3的公共电极 322与 CF基板 2的检测 线 22和 /或驱动线 24完全重叠， 减小了寄生电容。
总之， 该驱动线 22或 /和检测线 24的梳状结构至少部分与位于 TFT基板 3靠 近液晶层 4的公共电极 322的梳状结构错开， 如此， 避免了 TFT基板 3的公共电 极 322与 CF基板 2的驱动线 22和 /或检测线 24完全重叠， 减小了寄生电容。
上述错开包括部分错开与完全错开， 为增加平面内电极设置的数量，提高 利用率， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的公共电极 322的梳状结构互补。
该驱动线 22或检测线 24除了各自位于 CF基板 2的表层， 其上还可以 设置材质为聚酰亚胺的液晶取向膜。
实施例五 本实施例五的 FFS-LCD触摸显示面板与实施例四的触摸显示面板结构 大致相同， 区别在于： 对于 TFT基板 3 , 公共电极 322与栅极同层， 且走向 大致相同， 且为整块导电层， 上自上而下地形成有绝缘层 38、像素电极 321 ; 像素电极通过通孔与 321漏极相连， 该像素电极 321包括横杠部（bar ) 3211 及与其垂直且相连的梳齿部 3212, 该梳齿部 3212与公共电极 322用于提供 使液晶分子转动的电压。
上述结构中， 横杠部 3211与梳齿部 3212形成了该像素电极 321的梳状 结构， 目的是在整块结构上设置不连续间隙（狭缝），提供电场通过的开口部。 因而， 其它实施例中， 在像素电极 321上分别形成不连续间隙即可， 不限于 为梳状结构。
此外，该像素电极 321的梳状结构形成在 TFT基板靠近液晶层 4的表面， 为提高像素电极 321的梳状结构的使用寿命，该像素电极 321的梳齿部 3212 上可以设置保护膜， 其材质可以为氮化硅； 进一步优化地， 该保护膜上还可 以设置材质为聚酰亚胺液晶取向膜。
以下介绍 CF基板 2。 与实施例四类似， 该触摸层有两种设置方式： 1 ) 可以包括第一触摸层与第二触摸层， 驱动线 22 形成在第一触摸层、 检测线 24形成在第二触摸层， 两触摸层之间为介电层 23 ; 2 )驱动线 22与检测线 24形成在一层触摸层上。 以下先介绍驱动线 22与检测线 24分别形成在两层触摸层上的方案。 优选地，在两触摸层上，驱动线 22与检测线 24的布置方式为垂直设置， 这样， 在触摸体触摸驱动线 22与检测线 24的交叉位置时， 该触控信号被检 测。
本实施例五中， 对于形成在两层触摸层的驱动线 22与检测线 24 , 有两 种设置方式， 分别为： 1 )形成有检测线 24的第二触摸层更靠近液晶层 4; 2 ) 形成有驱动线 22的第一触摸层也可以更靠近液晶层 4。 需要说明的是， 该一条驱动线 22与一条检测线 24形成的一个单元可以 对应 TFT基板 3的一个像素单元， 也可以对应多个像素单元。
不同于现有技术的驱动线 22、检测线 24都为整块导电层的情况， 本实施例 五中， 该驱动线 22或检测线 24也设置梳状结构。 具体地， 参照图 9所示， 该驱 动线 22的桥 υ状结构包括横杠部 221与该横杠部 221垂直且相连的桥 υ齿部 222。 参 照图 10所示，检测线 24的梳状结构包括横杠部 241与该横杠部 241垂直且相连的 桥 υ齿部 242。
此外， 针对像素电极 321设置有梳齿部 3212、 公共电极 322为整块结构、 且 检测线 24更靠近液晶层 4的情况， 触摸层的具体设置方式为： 检测线 24的梳齿 部 242与像素电极 321的梳齿部 3212错开。 如此， 避免了 TFT基板 3的像素电极 321与 CF基板 2的检测线 22完全重叠， 减小了寄生电容。
针对像素电极 321设置有梳齿部 3212、公共电极 322为整块结构、且驱动线 22更靠近液晶层 4的情况， 触摸层的具体设置方式为： 驱动线 22的梳齿部 222 与像素电极 321的梳齿部 3212错开。 如此， 避免了 TFT基板 3的像素电极 321与 CF基板 2的驱动线 22完全重叠， 减小了寄生电容。
总之， 该驱动线 22或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的像素电极 321的梳状结构错开， 如此， 避免了 TFT基板 3的像素电极 321与 CF基板 2的驱动线 22和 /或检测线 24完全重叠， 减小了寄生电容。
可以理解的是， 与同一像素电极 321横杠部 3211相连的梳齿部 3212具有多 个， 但需说明的是， 对于像素电极 321 , 多个相连的梳齿部 3212不限于与一个 横杠部 3211相连， 也可以与多个横杠部 3211相连。 相应地， 对于驱动线 22, 多 个相连的梳齿部 222不限于与一个横杠部 221相连， 也可以与多个横杠部 221相 连， 类似地， 对于检测线 24 , 多个相连的梳齿部 242不限于与一个横杠部 241 相连， 也可以与多个横杠部 241相连。 类似地，横杠部 221与梳齿部 222形成了该驱动线 22的梳状结构，横杠 部 241与梳齿部 242形成了检测线 24的梳状结构，各自梳状结构的目的是在 各自整块结构上设置不连续间隙（狭缝）， 提供电场通过的开口部， 因而， 其 它实施例中， 在驱动线 22与检测线 24上分别形成不连续间隙即可， 不限于 为梳状结构。 以下接着介绍驱动线 22与检测线 24形成在一层触摸层上的方案。 如图 15所示， 该驱动线 22与检测线 24之间通过介电层 23隔绝。 驱动 线 22与检测线 24的隔开方式有两种： 1 )驱动线 22隔开检测线 24, 隔开部 分上具有第一桥接部 25 ,用以跨过该驱动线 22连接所述隔开的检测线 24; 2 ) 检测线 24隔开驱动线 22, 且在隔开部分上设置第二桥接部， 该第二桥接部 跨过所述检测线 24连接所述隔开的驱动线 22。
不同于现有技术的驱动线 22、检测线 24都为整块导电层的情况， 本实施例 四中，该驱动线 22或检测线 24也设置梳状结构。该驱动线 22的梳状结构包括横 杠部 221与该横杠部 221垂直且相连的梳齿部 222。 检测线 24的梳状结构包括横 杠部 241与该横杠部 241垂直且相连的桥 υ齿部 242。
此外， 针对像素电极 321设置有梳齿部 3212、 公共电极 322为整块结构、 且 驱动线 22与检测线 24设置在一层触摸层的情况，触摸层的具体设置方式为： 驱 动线 22的梳齿部 222与检测线 24的梳齿部 242两者之一或两者均与像素电极 321 的梳齿部 3212错开。 如此， 避免了 TFT基板 3的像素电极 321与 CF基板 2的检测 线 22和 /或驱动线 24完全重叠， 减小了寄生电容。
总之， 该驱动线 22或 /和检测线 24的梳状结构至少部分与位于 TFT基板 3靠 近液晶层 4的像素电极 321的梳状结构错开， 如此， 避免了 TFT基板 3的像素电 极 321与 CF基板 2的驱动线 22和 /或检测线 24完全重叠， 减小了寄生电容。
上述错开包括部分错开与完全错开， 为增加平面内电极设置的数量，提高 利用率， 该驱动线 22和 /或检测线 24的梳状结构至少部分与位于 TFT基板 3靠近 液晶层 4的公共电极 322的梳状结构互补。 该驱动线 22和 /或检测线 24除了各自位于 CF基板 2的表层， 其上还可 以设置材质为聚酰亚胺的液晶取向膜。
本发明虽然已以较佳实施例公开如上， 但其并不是用来限定本发明， 任 何本领域技术人员在不脱离本发明的精神和范围内， 都可以利用上述揭示的 方法和技术内容对本发明技术方案做出可能的变动和修改， 因此， 凡是未脱 筒单修改、 等同变化及修饰， 均属于本发明技术方案的保护范围。

Claims

权 利 要 求
1. 一种触摸显示面板， 包括： 相对设置的 CF基板与 TFT基板、 及两者之间 的液晶层， 其特征在于， 所述 TFT基板靠近液晶层设置有具有梳状结构 的公共电极和 /或具有梳状结构的像素电极，所述 CF基板靠近液晶层设置 有触摸层， 所述触摸层包括相互绝缘的驱动线与检测线， 所述驱动线和 / 或所述检测线具有梳状结构，且所述梳状结构至少部分与所述公共电极的 梳状结构和 /或像素电极的梳状结构错开。
2. 根据权利要求 1 所述的触摸显示面板， 其特征在于， 所述驱动线和 /或所 述检测线的梳状结构与所述公共电极的梳状结构和 /或像素电极的梳状结 构互补。
3. 根据权利要求 1所述的触摸显示面板， 其特征在于， 所述驱动线与所述检 测线形成在同一层， 所述驱动线垂直所述检测线。
4. 根据权利要求 3所述的触摸显示面板， 其特征在于， 所述驱动线隔开所述 检测线， 且隔开部分上具有第一桥接部， 所述第一桥接部跨过所述驱动线 连接所述隔开的检测线。
5. 根据权利要求 3所述的触摸显示面板， 其特征在于， 所述检测线隔开所述 驱动线， 且隔开部分上具有第二桥接部， 所述第二桥接部跨过所述检测线 连接所述隔开的驱动线。
6. 根据权利要求 1所述的触摸显示面板， 其特征在于， 所述触摸层包括相互 绝缘的第一触摸层与第二触摸层， 所述驱动线形成在第一触摸层， 所述检 测线形成在第二触摸层。
7. 根据权利要求 6所述的触摸显示面板， 其特征在于， 所述第二触摸层比所 述第一触摸层更靠近所述液晶层，所述检测线具有与所述公共电极的梳状 结构和 /或像素电极的梳状结构错开的梳状结构。
8. 根据权利要求 6所述的触摸显示面板， 其特征在于， 所述第一触摸层比所 述第二触摸层更靠近所述液晶层，所述驱动线具有与所述公共电极的梳状 结构和 /或像素电极的梳状结构错开的梳状结构。
9. 根据权利要求 1所述的触摸显示面板， 其特征在于， 所述公共电极设置在 所述 TFT基板靠近液晶层的表面， 所述公共电极具有梳状结构， 所述驱 动线和 /或所述检测线的梳状结构至少部分与所述公共电极的梳状结构错 开。
10.根据权利要求 1所述的触摸显示面板， 其特征在于， 所述像素电极设置在 所述 TFT基板靠近液晶层的表面， 所述像素电极具有梳状结构， 所述驱 动线和 /或所述检测线的梳状结构至少部分与所述像素电极的梳状结构错 开。
11.根据权利要求 1所述的触摸显示面板， 其特征在于， 所述公共电极和像素 电极设置在所述 TFT基板靠近液晶层的表面， 所述公共电极和像素电极 具有隔开的梳状结构， 所述驱动线和 /或所述检测线的梳状结构至少部分 与所述公共电极的梳状结构、 所述像素电极的梳状结构均错开。
12.根据权利要求 1所述的触摸显示面板， 其特征在于， 所述驱动线与所述检 测线的材质透明。
13.根据权利要求 1所述的触摸显示面板， 其特征在于， 所述公共电极或像素 电极的材质透明。
14.根据权利要求 12所述的触摸显示面板， 其特征在于， 所述驱动线与所述 检测线的材质为氧化铟锡、 或氧化铟辞、 或氧化铟锡和氧化铟辞的组合。
PCT/CN2012/085946 2012-07-20 2012-12-05 触摸显示面板 Ceased WO2014012319A1 (zh)

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KR20140048083A (ko) 2014-04-23
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