WO2016131254A1 - 内嵌式触摸屏及显示装置 - Google Patents

内嵌式触摸屏及显示装置 Download PDF

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Publication number
WO2016131254A1
WO2016131254A1 PCT/CN2015/089857 CN2015089857W WO2016131254A1 WO 2016131254 A1 WO2016131254 A1 WO 2016131254A1 CN 2015089857 W CN2015089857 W CN 2015089857W WO 2016131254 A1 WO2016131254 A1 WO 2016131254A1
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WIPO (PCT)
Prior art keywords
touch
electrode
electrodes
slit
gap
Prior art date
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Ceased
Application number
PCT/CN2015/089857
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English (en)
French (fr)
Inventor
王海生
董学
陈小川
刘英明
丁小梁
杨盛际
赵卫杰
刘红娟
刘伟
李昌峰
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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Priority to US15/122,086 priority Critical patent/US10001872B2/en
Priority to EP15882393.0A priority patent/EP3260962B1/en
Publication of WO2016131254A1 publication Critical patent/WO2016131254A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING 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
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Definitions

  • Embodiments of the present invention generally relate to the field of touch technologies, and in particular, to an in-cell touch panel and a display device.
  • the existing in cell type touch screen detects the finger touch position by using the principle of mutual capacitance or self capacitance.
  • the common electrode can be multiplexed as a touch electrode, and in the HADS type.
  • the structure of the common electrode is generally a slit electrode structure, that is, the common electrode is provided with a plurality of longitudinal slits in a region corresponding to each pixel. As shown in FIG. 1a and FIG.
  • one touch electrode 1 corresponds to a plurality of pixels 2 in the liquid crystal display, and adjacent touch electrodes 1 are insulated from each other by a gap, and each touch electrode 1 corresponds to each pixel 2.
  • a plurality of longitudinal slits S are provided in the area.
  • each of the touch electrodes 1 is provided with a plurality of longitudinal slits S in a region corresponding to each of the pixels 2, the touch electrodes 1 are located in the vicinity of the gap (A region in FIG. 1a). There is a difference in structure between the structure and the inside of the touch electrode 1 (the area B in FIG. 1a). Therefore, when the in-cell touch panel is displayed, there is a difference in brightness between the gap between the adjacent touch electrodes 1 of the display screen and the area where the touch electrode 1 is located, thereby causing undesirable problems such as bright lines or dark lines on the display screen.
  • an embodiment of the present invention provides an in-cell touch panel and a display device for solving the problem of occurrence of bright lines or dark lines on a display screen existing in the prior art.
  • an embodiment of the present invention provides an in-cell touch panel including an upper substrate and a lower substrate disposed opposite to each other, and a side of the lower substrate facing the upper substrate or the upper substrate facing the lower substrate a plurality of touch electrodes independent of each other on one side,
  • Each of the touch electrodes respectively corresponds to a plurality of pixels in the touch screen, and a slit is disposed in a region corresponding to a gap between the touch electrodes and the adjacent two pixels;
  • the touch screen further includes a strip-shaped floating electrode electrically connected to the corresponding touch electrode, and the strip-shaped floating electrode is disposed at the slit of the touch electrode and/or adjacent two touch electrodes Between the gaps.
  • the slit includes: a longitudinal slit corresponding to a gap between two pixels adjacent to the row, and two adjacent to the column A gap corresponding to the gap between the pixels.
  • the width of the longitudinal slit is the same as the width of the gap between two adjacent columns of touch electrodes;
  • the width of the lateral slit is the same as the width of the gap between two adjacent rows of touch electrodes.
  • the arrangement of the longitudinal slits in each of the touch electrodes is the same and/or the transverse slits in each of the touch electrodes.
  • the arrangement rules are the same.
  • each of the touch electrodes constitutes a common electrode layer on a side of the lower substrate facing the upper substrate;
  • the strip-shaped floating electrodes are disposed in the same layer as the data lines or gate lines on the lower substrate and are insulated from each other.
  • the strip-shaped floating electrode includes: disposed between the longitudinal slit and/or between two adjacent touch electrodes a longitudinal floating electrode at the gap; and/or a lateral floating electrode disposed at the lateral slit and/or a gap between two adjacent touch electrodes of the column.
  • the strip-shaped floating electrodes and the touch electrodes other than the electrically-connected touch electrodes do not coincide with each other.
  • the method further includes: disposed between the longitudinal slits other than the longitudinal floating electrodes and/or between the two touch electrodes adjacent to each other A signal line at a gap other than a gap having a longitudinal floating electrode, the signal line being connected in one-to-one correspondence with the touch electrode for loading a corresponding electrical signal to the connected touch electrode.
  • the touch electrodes are divided into a touch driving electrode and a touch sensing electrode; or
  • the touch electrode is a self-capacitance electrode
  • the touch control electrode is a touch drive electrode
  • the touch screen further includes: a touch sensing electrode disposed in a different layer from the touch drive electrode.
  • the embodiment of the invention further provides a display device, which comprises the above-mentioned embedded touch screen provided by the embodiment of the invention.
  • an in-cell touch panel and a display device are provided with a slit in a region corresponding to a gap between two adjacent pixels of a touch electrode disposed in the touch screen, thereby ensuring the entire in-cell touch panel.
  • the uniform distribution of the gap between the slits of the touch electrodes and the touch electrodes prevents the in-line touch screen from appearing bright or dark lines.
  • a strip-shaped floating electrode electrically connected to the touch electrode is further disposed on the touch screen, and the strip-shaped floating electrode is disposed between the slit of each touch electrode and/or between two adjacent touch electrodes At the gap, the strip-shaped floating electrode is used to partially fill or cover the slit in the touch electrode, which can alleviate the problem that the effective area of the touch electrode is reduced due to the slit provided in each touch electrode.
  • 1a is a schematic structural view of a conventional in-cell touch panel
  • FIG. 1b is a schematic structural view of a touch electrode in the in-cell touch panel shown in FIG. 1a;
  • FIG. 2 is a schematic structural diagram of an in-cell touch panel according to an exemplary embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a touch electrode in an in-cell touch panel according to an exemplary embodiment of the present invention
  • FIG. 4 is a schematic structural view of a touch electrode in the in-cell touch panel shown in FIG. 2;
  • FIG. 5a is a schematic diagram of driving timing of an in-cell touch panel according to an exemplary embodiment of the present invention.
  • FIG. 5b is a timing diagram of driving of an in-cell touch panel according to another exemplary embodiment of the present invention. intention.
  • each film layer in the drawings do not reflect the true scale, and are merely intended to illustrate the present invention.
  • An embodiment of the present invention provides an in-cell touch panel, as shown in FIG. 2 to FIG. 4, comprising: an upper substrate (not shown) and a lower substrate 01 disposed opposite to each other, and disposed on the upper substrate facing the lower substrate 01
  • the one side or the lower substrate 01 faces the mutually independent plurality of touch electrodes 03 on the side of the upper substrate.
  • the touch electrode 03 is disposed on the side of the lower substrate 01 facing the upper substrate.
  • each touch electrode 03 corresponds to a plurality of pixels 02 in the touch screen
  • FIG. 3 illustrates a touch electrode 03 corresponding to 2 ⁇ 3 pixels as an example.
  • a slit 04 is provided in a region corresponding to a gap between each of the touch electrodes 03 and the adjacent two pixels 02.
  • the portion of the touch electrode 03 corresponding to each of the pixels 02 has a slit-like structure.
  • the touch screen further includes a strip-shaped floating electrode 05 electrically connected to the touch electrode 03 , and the strip-shaped floating electrode 05 may be disposed at the slit 04 of each touch electrode 03 and/or adjacent to each other.
  • the strip-shaped floating electrode 05 has a width that is less than the width of the slit 04 and/or the width of the gap 06, thereby only partially filling or covering the slit 04 and/or the gap 06.
  • the touch electrode 03 is provided with a slit 04 in a region corresponding to the gap between the adjacent two pixels 02, thereby ensuring the touch in the entire in-cell touch panel.
  • the uniform distribution of the gap 06 between the slit 04 and the touch electrode 03 in the control electrode 03 prevents the in-line touch panel from appearing a problem such as a bright line or a dark line.
  • a strip-shaped floating electrode 05 electrically connected to the touch electrode 03 is further disposed on the touch screen, and the strip-shaped floating electrode 05 is disposed at the slit 04 of the touch electrode 03 and/or adjacent two touches Electrode 03 At a gap 06 between the portions, the strip-shaped floating electrode 05 is used to partially fill the slit 04 in the touch electrode 03, which can alleviate the touch electrode 03 caused by the slit 04 provided in each touch electrode 03. The problem of reduced effective area.
  • the gap 06 between the touch electrodes 03 can be specifically divided into a longitudinal gap 061 and a lateral gap 062.
  • the slits 04 provided in the respective touch electrodes 03 are as shown in FIG. 3, and may include: two pixels adjacent to the row. A gap between the 02 corresponds to the longitudinal slit 041, and a lateral slit 042 corresponding to the gap between the two pixels 02 adjacent to the column. In order to ensure continuity in the same touch electrode 03, the lateral slit 042 and the longitudinal slit 041 do not penetrate the touch electrode 03.
  • the width of the longitudinal slit 041 is generally set to be adjacent to the adjacent two columns of touch electrodes.
  • the gap between the 03s (e.g., 061) is the same, and/or the width of the lateral slit 042 is generally set to be the same as the width of the gap (e.g., 062) between the adjacent two rows of touch electrodes 03.
  • the width of the gap between adjacent columns and adjacent rows of touch electrodes 03 is generally about 5 ⁇ m, which is not limited herein.
  • the lengths of the longitudinal slits 041 are equal in each of the touch electrodes 03; and/or each The length of the transverse slit 042 is equal.
  • the arrangement rules of the lateral slits 042 in the touch electrodes 03 are the same, and/or each The arrangement of the longitudinal slits 041 in the touch electrode 03 is the same.
  • the array pattern formed by the longitudinal slits and/or the lateral slits in each touch electrode is the same as the other touch electrodes.
  • the lateral slits of all the touch electrodes may have the same shape (eg, width, length, etc.), are in the same relative position with respect to the touch electrodes or pixels, and are aligned with each other in the column direction, each touch electrode The spacing between the lateral slits is equal, etc.; similarly, the longitudinal slits of all the touch electrodes have the same shape (eg, width, length, etc.), and are in the same relative relative to the touch electrodes or pixels. Location, at The rows are aligned with each other, the spacing between the longitudinal slits in each of the touch electrodes is equal, and the like; the lateral slits and the longitudinal slits have the same shape and the like.
  • a plurality of mutually independent touch electrodes 03 are generally disposed in the same layer.
  • the touch electrode 03 can also be prepared in layers, which is not limited herein.
  • the above-mentioned in-cell touch panel provided by the embodiment of the present invention is applicable to both a twisted nematic (TN) liquid crystal display and an advanced super dimension field switch (Adwanced Dimension Switch, ADS) liquid crystal display, high aperture ratio, high-advanced Dimension Switch (HADS) type liquid crystal display and In-Plane Switch (IPS) type liquid crystal display.
  • TN twisted nematic
  • ADS advanced super dimension field switch
  • HADS high-advanced Dimension Switch
  • IPS In-Plane Switch
  • the in-cell touch panel provided by the embodiment of the present invention is particularly suitable for a HADS type liquid crystal display.
  • the common electrode layer having a slit electrode structure in the HADS type liquid crystal display is multiplexed into the touch electrode 03, that is, each touch.
  • the electrode 03 is formed on the common electrode layer on the side of the lower substrate 01 facing the upper substrate.
  • the density of the touch screen is usually on the order of millimeters. Therefore, in a specific implementation, the density and the occupied area of each touch electrode can be selected according to the required touch density to ensure the required touch density.
  • each can be The touch electrode is designed as a square electrode of about 5 mm ⁇ 5 mm.
  • the density of the display is usually on the order of micrometers. Therefore, generally one touch electrode can correspond to multiple pixels in the display.
  • the mutual capacitance principle can be utilized: the touch electrode having the above structure is divided into a touch driving electrode and a touch sensing electrode; or The touch electrode of the structure is used as a touch driving electrode, and a touch sensing electrode disposed in a different layer from the touch driving electrode is disposed in the touch screen; or the touch electrode having the above structure is used as a self-capacitance electrode by using a self-capacitance principle.
  • the touch screen provided by the embodiment of the present invention uses the common electrode layer multiplexing as the touch electrode, and in order to reduce the mutual interference between the display and the touch signal, in the specific implementation, the touch and display stage time-division driving manner may be adopted. Moreover, in the specific implementation, the display driver chip and the touch detection chip can be integrated into one chip, thereby further reducing the production cost.
  • the time of displaying each frame (V-sync) of the touch screen is divided into a display time period (Display) and a touch time period (Touch), for example, as shown in FIG. 5a and
  • the time of displaying one frame of the touch screen is 16.7 ms, and 5 ms is selected as the touch time period, and the other 11.7 ms is used as the display time period.
  • the processing capability of the IC chip can be appropriately adjusted. The duration of the two is not specifically limited here.
  • a gate scan signal is sequentially applied to each of the gate signal lines Gate1, Gate2, ..., Gate n in the touch screen, and a gray scale signal is applied to the data signal line Data for each touch electrode.
  • Cx1 ... Cx n respectively apply a common electrode signal to realize a liquid crystal display function.
  • a driving signal can be simultaneously applied to each of the touch electrodes Cx1 . . . Cx n while receiving each touch.
  • the feedback signals of the control electrodes Cx1 . . . Cx n may be sequentially applied to the touch electrodes Cx1 . . . Cx n as shown in FIG. 5b, and respectively receive the touch electrodes Cx1.
  • the feedback signal of VietnameseCx n is not limited here, and the touch function is realized by judging whether the touch signal is generated by analyzing the feedback signal.
  • each strip-shaped floating electrode 05 connected to the touch electrode 03 and the data line 07 on the lower substrate or The gate lines are arranged in the same layer and insulated from each other.
  • each strip-shaped floating electrode 05 can be prepared in the same layer as the data line 07 or the gate line, so that the new preparation process can be realized without changing the composition of the corresponding film layer, and the process steps are simplified. , saving production costs and improving production efficiency.
  • the material of each strip-shaped floating electrode is made of the same conductive material as the data line or the gate line, and the resistance of the touch electrode connected thereto can also be reduced.
  • the touch electrode 03 has both the longitudinal slit 041 and the lateral slit 042. Therefore, the strip floating electrode 05 can also be correspondingly To include: a longitudinal floating electrode disposed at a gap between the longitudinal slit 041 and/or two adjacent touch electrodes 03; and/or disposed at the lateral slit 042 and/or column A lateral floating electrode at a gap between two adjacent touch electrodes 03. Only a schematic structural view of the longitudinal floating electrode provided at the longitudinal slit 041 is shown in FIGS. 2 and 4.
  • the slit in the touch electrode 03 is filled with the strip-shaped floating electrode 05 as much as possible to increase the effective area of the touch electrode 03.
  • each strip-shaped floating electrode 05 can be disposed as a touch electrode 03 other than the touch-sensitive electrode 03 connected to the charge-discharging electrode.
  • the lengths of the strip-shaped floating electrodes 05 are the same as the lengths of the electrically-connected touch electrodes 03, so that a plurality of strip-shaped floating electrodes 05 connected to different touch electrodes 03 can be disposed on the same straight line. .
  • the touch screen may generally further include: disposed at a longitudinal slit 041 other than a longitudinal slit having a longitudinal floating electrode and/or a phase.
  • the touch screen may further include a lateral float that is disposed between other lateral slits other than the lateral slits having the lateral floating electrodes and/or between the two adjacent touch electrodes 03.
  • Signal line 08 at a gap other than the gap of the empty electrode.
  • the signal line 08 may be disposed at the slit 04 in which the floating electrode is not disposed and/or at a gap in which the floating electrode is not disposed between the adjacent two touch electrodes 03.
  • the signal line 08 is connected in one-to-one correspondence with the touch electrode 03 for loading a corresponding electrical signal to the touch electrode 03 connected thereto.
  • the embodiment of the present invention further provides a display device, which includes the above-mentioned embedded touch screen provided by the embodiment of the present invention, and the display device may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, and a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • the display device reference may be made to the above embodiment of the in-cell touch panel, and the repeated description is omitted.
  • An in-cell touch panel and a display device provided by the embodiment of the invention provide a touch electrode disposed in the touch screen with a slit in a region corresponding to a gap between two adjacent pixels, thereby ensuring the entire embedded
  • the uniform distribution of the gap between the slits of the touch electrodes and the touch electrodes in the touch screen prevents the in-line touch screen from appearing bright or dark lines.
  • a strip-shaped floating electrode electrically connected to the touch electrode is further disposed on the touch screen, and the strip-shaped floating electrode is disposed between the slit of each touch electrode and/or between two adjacent touch electrodes At the gap, the strip-shaped floating electrode is used to partially fill or cover the slit in the touch electrode, which can alleviate the problem that the effective area of the touch electrode is reduced due to the slit provided in each touch electrode.

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Abstract

一种内嵌式触摸屏及显示装置，在触摸屏内设置的触控电极在相邻两个像素（02）之间的间隙对应的区域设置有狭缝（04），保证整个内嵌式触摸屏中各触控电极（03）的狭缝（04）和触控电极（03）之间的间隙（06）的均匀分布，进而避免内嵌式触摸屏出现亮线或者暗线等不良问题。并且，进一步在触摸屏中还设置有与触控电极（03）电性相连的条状浮空电极（05），条状浮空电极（05）设置在各触控电极（03）的狭缝（04）处和/或相邻两个触控电极（03）之间的间隙（06）处，采用条状浮空电极（05）来部分填充或覆盖触控电极（03）中的狭缝（04），可以缓解由于在各触控电极（03）内设置的狭缝（04）带来的触控电极（03）有效面积降低的问题。

Description

内嵌式触摸屏及显示装置 技术领域
本发明的实施例一般地涉及触控技术领域，尤其涉及一种内嵌式触摸屏及显示装置。
背景技术
目前，现有的内嵌(In cell)式触摸屏是利用互电容或自电容的原理检测手指触摸位置。其中，例如当内嵌式触摸屏应用于高开口率、高级超维场开关(High-Adwanced Dimension Switch，HADS)型液晶显示屏时，一般可以采用公共电极复用为触控电极，而在HADS型液晶显示屏中，公共电极的结构一般为狭缝电极结构，即公共电极在与各像素对应的区域设置有多个纵向狭缝。如图1a和图1b所示，一个触控电极1对应液晶显示屏中的多个像素2，相邻触控电极1之间通过间隙相互绝缘，并且各触控电极1在与各像素2对应的区域内设置有多个纵向狭缝S。
在上述内嵌式触摸屏中，尽管各触控电极1在与各像素2对应的区域内设置有多个纵向狭缝S，但是由于位于间隙附近(图1a中A区域)的触控电极1的结构与触控电极1内部(图1a中B区域)的结构存在差异。因此，上述内嵌式触摸屏在显示时，显示屏的相邻触控电极1之间的间隙与触控电极1所在的区域存在亮度差异，从而导致显示屏出现亮线或者暗线等不良问题。
发明内容
有鉴于此，本发明实施例提供了一种内嵌式触摸屏和显示装置，用以解决现有技术中存在的显示画面出现亮线或者暗线等不良问题。
因此，本发明实施例提供了一种内嵌式触摸屏，包括相对而置的上基板和下基板，以及设置于所述下基板面向所述上基板一侧或所述上基板面向所述下基板一侧的相互独立的多个触控电极，
各所述触控电极分别对应触摸屏中的多个像素，且各所述触控电极与相邻两个像素之间的间隙对应的区域中设置有狭缝；
所述触摸屏还包括与对应的触控电极电性相连的条状浮空电极，所述条状浮空电极设置在所述触控电极的狭缝处和/或相邻两个触控电极之间的间隙处。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，所述狭缝包括：与行相邻的两个像素之间的间隙对应的纵向狭缝，以及与列相邻的两个像素之间的间隙对应的横向狭缝。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，所述纵向狭缝的宽度与相邻两列触控电极之间的间隙的宽度相同；和/或，
所述横向狭缝的宽度与相邻两行触控电极之间的间隙的宽度相同。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，各所述触控电极中的纵向狭缝的排布规律均相同和/或各所述触控电极中的横向狭缝的排布规律均相同。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，各所述触控电极组成位于所述下基板面向所述上基板一侧的公共电极层；
所述条状浮空电极与所述下基板上的数据线或栅线同层设置且相互绝缘。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，所述条状浮空电极包括：设置于所述纵向狭缝处和/或行相邻的两个触控电极之间的间隙处的纵向浮空电极；和/或，设置于所述横向狭缝处和/或列相邻的两个触控电极之间的间隙处的横向浮空电极。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，所述条状浮空电极与除电性相连的触控电极之外的其他触控电极互不重合。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，还包括：设置于除具有纵向浮空电极以外的其他纵向狭缝处和/或行相邻的两个触控电极之间的除具有纵向浮空电极的间隙以外的其它间隙处的信号线，所述信号线与所述触控电极一一对应连接，用于向连接的触控电极加载对应的电信号。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，所述触控电极分为触控驱动电极和触控感应电极；或，
所述触控电极为自电容电极；或，
所述触控电极为触控驱动电极，在所述触摸屏中还包括：与所述触控驱动电极异层设置的触控感应电极。
本发明实施例还提供一种显示装置，包括本发明实施例提供的上述内嵌式触摸屏。
根据本发明实施例提供的一种内嵌式触摸屏及显示装置，在触摸屏内设置的触控电极在相邻两个像素之间的间隙对应的区域设置有狭缝，保证了整个内嵌式触摸屏中各触控电极的狭缝和触控电极之间的间隙的均匀分布，进而避免内嵌式触摸屏出现亮线或者暗线等不良问题。并且，进一步在触摸屏中还设置了与触控电极电性相连的条状浮空电极，条状浮空电极设置在各触控电极的狭缝处和/或相邻两个触控电极之间的间隙处，采用条状浮空电极来部分填充或覆盖触控电极中的狭缝，可以缓解由于在各触控电极内设置的狭缝带来的触控电极有效面积降低的问题。
附图说明
图1a为现有的内嵌式触摸屏的结构示意图；
图1b为图1a所示的内嵌式触摸屏中一个触控电极的结构示意图；
图2为本发明的一个示例性实施例提供的内嵌式触摸屏的结构示意图；
图3为本发明的一个示例性实施例提供的内嵌式触摸屏中的触控电极的结构示意图；
图4为图2所示的内嵌式触摸屏中一个触控电极的结构示意图；
图5a为本发明的一个示例性实施例提供的内嵌式触摸屏的驱动时序示意图；以及
图5b为本发明的另一个示例性实施例提供的内嵌式触摸屏的驱动时序示 意图。
具体实施方式
下面结合附图，对本发明实施例提供的内嵌式触摸屏及显示装置的具体实施方式进行详细地说明。
附图中各膜层的厚度和形状不反映真实比例，目的只是示意说明本发明内容。
本发明实施例提供了一种内嵌式触摸屏，如图2至图4所示，包括：相对而置的上基板(图中未示出)和下基板01，设置于上基板面向下基板01一侧或下基板01面向上基板一侧的相互独立的多个触控电极03。在图2至图4示出的示例中，触控电极03设置于下基板01面向上基板一侧。
在如图3所示的触控电极的结构示意图中，各触控电极03分别对应触摸屏中的多个像素02，在图3中以一个触控电极03对应2×3个像素为例进行说明，且各触控电极03与相邻两个像素02之间的间隙对应的区域内设置有狭缝04。相邻两个触控电极03之间存在间隙06。如图所示，触控电极03与各个像素02对应的部分具有狭缝状结构。
如图2所示，该触摸屏还包括与触控电极03电性相连的条状浮空电极05，条状浮空电极05可以设置在各触控电极03的狭缝04处和/或相邻两个触控电极之间的间隙06处。在一个示例中，条状浮空电极05的宽度小于狭缝04的宽度和/或间隙06的宽度，从而仅部分地填充或覆盖狭缝04和/或间隙06。
在本发明实施例提供的上述内嵌式触摸屏中，触控电极03在与相邻两个像素02之间的间隙对应的区域内设置有狭缝04，保证了整个内嵌式触摸屏中各触控电极03中的狭缝04和触控电极03之间的间隙06的均匀分布，进而避免内嵌式触摸屏出现亮线或者暗线等不良问题。
进一步，在触摸屏中还设置了与触控电极03电性相连的条状浮空电极05，条状浮空电极05设置在触控电极03的狭缝04处和/或相邻两个触控电极03 之间的间隙06处，采用条状浮空电极05来部分填充触控电极03中的狭缝04，可以缓解由于在各触控电极03内设置的狭缝04带来的触控电极03的有效面积降低的问题。
在一个实施例中，如图3所示，触控电极03之间的间隙06可以具体分为纵向间隙061和横向间隙062。为了使触摸屏在竖直和水平两个方向上的间隙均分布均匀，具体地，在各触控电极03中设置的狭缝04如图3所示，可以包括：与行相邻的两个像素02之间的间隙对应的纵向狭缝041，以及与列相邻的两个像素02之间的间隙对应的横向狭缝042。为了保证同一触控电极03内的连续性，横向狭缝042和纵向狭缝041不会贯穿触控电极03。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，为了使触控电极03所在层的图案更加均一化，一般将纵向狭缝041的宽度设置为与相邻两列触控电极03之间的间隙(如，061)的宽度相同，和/或，一般将横向狭缝042的宽度设置为与相邻两行触控电极03之间的间隙(如，062)的宽度相同。示例性地，相邻列和相邻行触控电极03之间的间隙的宽度一般为5μm左右，在此不作限定。
在一个示例中，为了保证狭缝04分布的均匀性，在本发明实施例提供的上述内嵌式触摸屏中，在各触控电极03中，各纵向狭缝041的长度相等；和/或各横向狭缝042的长度相等。
较佳地，为进一步保证狭缝分布的均匀性，在本发明实施例提供的上述内嵌式触摸屏中，各触控电极03中的横向狭缝042的排布规律均相同，和/或各触控电极03中的纵向狭缝041的排布规律均相同。换句话说，每个触控电极中由纵向狭缝和/或横向狭缝形成的阵列图案与其它触控电极相同。例如，所有触控电极中的横向狭缝可以具有相同的形状(如，宽度、长度等)，相对于触控电极或像素处于相同的相对位置，在列方向上彼此对齐，每个触控电极中的横向狭缝之间的间距相等，等等；类似地，所有触控电极中的纵向狭缝具有相同的形状(如，宽度、长度等)，相对于触控电极或像素处于相同的相对位置，在 行方向上彼此对齐，每个触控电极中的纵向狭缝之间的间距相等，等等；横向狭缝和纵向狭缝具有相同的形状等。
较佳地，为了简化制作工艺，在本发明实施例提供的上述内嵌式触摸屏中，多个相互独立的触控电极03一般同层设置。这样，只需要通过一次构图工艺就可形成所有触控电极03的图形，能够简化工艺步骤，节省制备成本。当然也可以分层制备触控电极03，在此不做限定。
进一步地，在具体实施时，本发明实施例提供的上述内嵌式触摸屏，既适用于扭转向列(Twisted Nematic，TN)型液晶显示屏，也适用于高级超维场开关(Adwanced Dimension Switch，ADS)型液晶显示屏，高开口率、高级超维场开关(High-Adwanced Dimension Switch，HADS)型液晶显示屏和平面内开关(In-Plane Switch，IPS)型液晶显示屏。
进一步地，本发明实施例提供的上述内嵌式触摸屏尤其适用于HADS型液晶显示屏，HADS型液晶显示屏中具有狭缝电极结构的公共电极层复用为触控电极03，即各触控电极03组成位于下基板01面向上基板一侧的公共电极层，这样，在将公共电极层的结构进行变更分割成触控电极以实现触控功能时，在现有的下基板01制备工艺的基础上，不需要增加额外的工艺，可以节省生产成本，提高生产效率。
一般地，触摸屏的密度通常在毫米级，因此，在具体实施时，可以根据所需的触控密度选择各触控电极的密度和所占面积以保证所需的触控密度，例如可以将各触控电极设计为5mm×5mm左右的方形电极。而显示屏的密度通常在微米级，因此，一般一个触控电极可以对应显示屏中的多个像素。
并且，在本发明实施例提供的上述触摸屏中，根据触摸屏的实现原理，可以利用互电容原理：即将具有上述结构的触控电极分为触控驱动电极和触控感应电极；或，将具有上述结构的触控电极作为触控驱动电极，在触摸屏中还会设置与触控驱动电极异层设置的触控感应电极；或利用自电容原理，将具有上述结构的触控电极作为自电容电极。
由于本发明实施例提供的上述触摸屏采用公共电极层复用作为触控电极，为了减少显示和触控信号之间的相互干扰，在具体实施时，可以采用触控和显示阶段分时驱动的方式，并且，在具体实施时还可以将显示驱动芯片和触控侦测芯片整合为一个芯片，进一步降低生产成本。
例如，如图5a和图5b所示的驱动时序图中，将触摸屏显示每一帧(V-sync)的时间分成显示时间段(Display)和触控时间段(Touch)，例如如图5a和图5b所示的驱动时序图中触摸屏的显示一帧的时间为16.7ms，选取其中5ms作为触控时间段，其他的11.7ms作为显示时间段，当然也可以根据IC芯片的处理能力适当的调整两者的时长，在此不做具体限定。在显示时间段(Display)，对触摸屏中的每条栅极信号线Gate1，Gate2......Gate n依次施加栅扫描信号，对数据信号线Data施加灰阶信号，对各触控电极Cx1......Cx n分别施加公共电极信号，以实现液晶显示功能。
在触控时间段(Touch)，如图5a所示，例如将触控电极作为自电容电极时，可以向各触控电极Cx1......Cx n同时施加驱动信号，同时接收各触控电极Cx1......Cx n的反馈信号；也可以如图5b所示，向各触控电极Cx1......Cx n依次施加驱动信号，分别接收各触控电极Cx1......Cx n的反馈信号，在此不做限定，通过对反馈信号的分析判断是否发生触控，以实现触控功能。
进一步地，为了简化制作工艺，以及降低制作成本，在本发明实施例提供的上述内嵌式触摸屏中，与触控电极03连接的条状浮空电极05可以和下基板上的数据线07或栅线同层设置且相互绝缘。这样在制备时，可以将各条状浮空电极05与数据线07或栅线同层制备，从而不用增加新的制备工艺，仅需变更对应的膜层的构图即可实现，简化了工艺步骤，节省了生产成本，提高了生产效率。并且，各条状浮空电极的材质采用与数据线或栅线相同的导电材料，也可以降低与其连接的触控电极的电阻。
并且，进一步地，由于在本发明实施例提供的上述触摸屏中，触控电极03既具有纵向狭缝041也具有横向狭缝042，因此，条状浮空电极05对应地也可 以包括：设置于纵向狭缝041处和/或行相邻的两个触控电极03之间的间隙处的纵向浮空电极；和/或，设置于横向狭缝042处和/或列相邻的两个触控电极03之间的间隙处的横向浮空电极。在图2和图4中仅示出了设置于纵向狭缝041处的纵向浮空电极的结构示意图。
进一步地，为了在本发明实施例提供的上述触摸屏中，尽量采用条状浮空电极05填充触控电极03中的狭缝，以增大触控电极03的有效面积，在具体实施时，可以设置尽量多条条状浮空电极05，并且，如图2和4所示，可以将各条状浮空电极05设置为与除电性相连的触控电极03之外的其他触控电极03互不重合，即各条状浮空电极05的长度与其电性连接的触控电极03的长度一致，这样可以在同一直线上设置多条与不同触控电极03连接的条状浮空电极05。
进一步地，在本发明实施例提供的上述触摸屏中，如图2所示，一般还可以包括：设置于除具有纵向浮空电极的纵向狭缝以外的其他纵向狭缝041处和/或行相邻的两个触控电极03之间的、除具有纵向浮空电极的间隙以外的其他间隙处的信号线08。在其它示例中，上述触摸屏还可以包括设置于除具有横向浮空电极的横向狭缝以外的其他横向狭缝处和/或列相邻的两个触控电极03之间的、除具有横向浮空电极的间隙以外的其他间隙处的信号线08。换句话说，信号线08可以设置在其中未设置浮空电极的狭缝04处和/或设置在相邻的两个触控电极03之间的、其中未设置浮空电极的间隙处。该信号线08与触控电极03一一对应连接，用于向其连接的触控电极03加载对应的电信号。
基于同一发明构思，本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述内嵌式触摸屏，该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述内嵌式触摸屏的实施例，重复之处不再赘述。
本发明实施例提供的一种内嵌式触摸屏及显示装置，在触摸屏内设置的触控电极在与相邻两个像素之间的间隙对应的区域设置有狭缝，保证了整个内嵌 式触摸屏中各触控电极的狭缝和触控电极之间的间隙的均匀分布，进而避免内嵌式触摸屏出现亮线或者暗线等不良问题。并且，进一步在触摸屏中还设置了与触控电极电性相连的条状浮空电极，条状浮空电极设置在各触控电极的狭缝处和/或相邻两个触控电极之间的间隙处，采用条状浮空电极来部分填充或覆盖触控电极中的狭缝，可以缓解由于在各触控电极内设置的狭缝带来的触控电极有效面积降低的问题。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (10)

  1. 一种内嵌式触摸屏，包括相对而置的上基板和下基板、以及设置于所述下基板面向所述上基板一侧或所述上基板面向所述下基板一侧的相互独立的多个触控电极，其特征在于：
    各所述触控电极分别对应触摸屏中的多个像素，且各所述触控电极与相邻两个像素之间的间隙对应的区域中设置有狭缝；所述触摸屏还包括与对应的触控电极电性相连的条状浮空电极，所述条状浮空电极设置在所述触控电极的狭缝处和/或相邻两个触控电极之间的间隙处。
  2. 如权利要求1所述的内嵌式触摸屏，其特征在于，所述狭缝包括：与行相邻的两个像素之间的间隙对应的纵向狭缝，以及与列相邻的两个像素之间的间隙对应的横向狭缝。
  3. 如权利要求2所述的内嵌式触摸屏，其特征在于，
    所述纵向狭缝的宽度与相邻两列触控电极之间的间隙的宽度相同；和/或，
    所述横向狭缝的宽度与相邻两行触控电极之间的间隙的宽度相同。
  4. 如权利要求2所述的内嵌式触摸屏，其特征在于，各所述触控电极中的纵向狭缝排布规律均相同，和/或各所述触控电极中的横向狭缝的排布规律均相同。
  5. 如权利要求1-4中任一项所述的内嵌式触摸屏，其特征在于，
    各所述触控电极组成位于所述下基板面向所述上基板一侧的公共电极层；
    所述条状浮空电极与所述下基板上的数据线或栅线同层设置且相互绝缘。
  6. 如权利要求2所述的内嵌式触摸屏，其特征在于，所述条状浮空电极包括：
    设置于所述纵向狭缝处和/或行相邻的两个触控电极之间的间隙处的纵向浮空电极；和/或，
    设置于所述横向狭缝处和/或列相邻的两个触控电极之间的间隙处的横向 浮空电极。
  7. 如权利要求2-4和6中任一项所述的内嵌式触摸屏，其特征在于，各所述条状浮空电极与除其电性相连的触控电极之外的其他触控电极互不重合。
  8. 如权利要求2-4和6中任一项所述的内嵌式触摸屏，其特征在于，还包括：
    设置于除具有纵向浮空电极的纵向狭缝以外的其他纵向狭缝处，和/或设置于行相邻的两个触控电极之间的除具有纵向浮空电极的间隙以外的其它间隙处的信号线，所述信号线与所述触控电极一一对应连接，用于向连接的触控电极加载对应的电信号。
  9. 如权利要求1-8中任一项所述的内嵌式触摸屏，其特征在于，
    所述触控电极分为触控驱动电极和触控感应电极；或者
    所述触控电极为自电容电极；或者
    所述触控电极为触控驱动电极，在所述触摸屏中还包括与所述触控驱动电极异层设置的触控感应电极。
  10. 一种显示装置，其特征在于，包括如权利要求1-9任一项所述的内嵌式触摸屏。
PCT/CN2015/089857 2015-02-17 2015-09-17 内嵌式触摸屏及显示装置 Ceased WO2016131254A1 (zh)

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