WO2016150010A1 - 内嵌式电容触摸屏及其驱动方法 - Google Patents

内嵌式电容触摸屏及其驱动方法 Download PDF

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Publication number
WO2016150010A1
WO2016150010A1 PCT/CN2015/081180 CN2015081180W WO2016150010A1 WO 2016150010 A1 WO2016150010 A1 WO 2016150010A1 CN 2015081180 W CN2015081180 W CN 2015081180W WO 2016150010 A1 WO2016150010 A1 WO 2016150010A1
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Prior art keywords
touch
electrodes
touch driving
time
driving
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Ceased
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PCT/CN2015/081180
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English (en)
French (fr)
Inventor
徐向阳
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/787,524 priority Critical patent/US9886123B2/en
Publication of WO2016150010A1 publication Critical patent/WO2016150010A1/zh
Anticipated expiration legal-status Critical
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    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
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    • 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
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    • 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
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
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    • 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
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    • 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
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    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background

Definitions

  • the invention belongs to the technical field of touch screens, and in particular to an in-cell capacitive touch screen and a driving method thereof.
  • a touch screen is an input device that allows a user to input a user's instruction by using a finger or an object to select an instruction content displayed on a screen of an image display or the like.
  • the user's hand or object is in direct contact with the touch panel at the contact location. Since such a touch panel can replace a separate input device such as a keyboard or a mouse connected to an image display, its application field has been expanding.
  • the in-cell touch screen integrates touch elements into the display to provide touch control.
  • the in-cell touch panel can complete the manufacture of touch components in the standard process of the touch screen, and there is no problem of conforming and alignment. It has many advantages such as being thinner and lighter, no need for a frame, and a full-plane design.
  • the in-cell touch function is usually implemented by time-multiplexing the common electrodes.
  • the specific process is: dividing the display time of one frame into the display driving time and the touch driving time; wherein, in the display driving time, the common electrode voltage for the screen display is applied to all the common electrodes; and during the touch driving time Applying a touch driving voltage for the touch driving to the common electrode (ie, the touch driving electrode) participating in the touch driving, and applying a common electrode voltage for the screen display to the remaining common electrodes not participating in the touch driving, thereby Realize the functions of screen display and touch drive.
  • the touch driving time the voltage on the common electrode that is not involved in the touch driving is the common electrode voltage for the screen display, the screen of the corresponding area is normal, and the touch driving voltage on the common electrode participating in the touch driving is Above the common electrode voltage, the screen of the corresponding area shows an abnormality.
  • the touch driving time of each frame display time applies a touch driving voltage to the common electrode of the corresponding area, which may cause unevenness of the screen display.
  • the touch driving voltage is continuously applied to the common electrode in the same region, the aging rate of the liquid crystal molecules in the region is accelerated.
  • the invention provides an in-cell capacitive touch screen and a driving method thereof to solve the above prior art problems.
  • a driving method of an in-cell capacitive touch screen includes a plurality of common electrodes and a plurality of touch driving electrodes extending along a first direction
  • the driving The method includes: providing a common electrode voltage for screen display to the plurality of common electrodes and the even touch driving electrodes of the plurality of touch driving electrodes during a touch driving time of the Nth frame display time, and The odd-numbered touch driving electrodes of the plurality of touch driving electrodes provide a touch driving voltage for the touch driving; and the plurality of common electrodes and the driving time in the touch driving time of the N+1 frame display time
  • the plurality of touch driving electrodes of the plurality of touch driving electrodes provide the common electrode voltage, and the touch driving voltage is provided to the even touch driving electrodes of the plurality of touch driving electrodes.
  • the touch driving voltage is higher than the common electrode voltage.
  • the common electrode voltage is supplied to the plurality of common electrodes and the plurality of touch driving electrodes during a display driving time of the Nth frame display time.
  • the common electrode voltage is supplied to the plurality of common electrodes and the plurality of touch driving electrodes during a display driving time of the N+1th frame display time.
  • an in-cell capacitive touch screen includes a plurality of common electrodes and a plurality of touch driving electrodes extending along a first direction, wherein the plurality of common electrodes and the plurality of The even number of touch driving electrodes of the strip touch driving electrodes are provided with a common electrode voltage for screen display during the touch driving time of the Nth frame display time, and the odd touches of the plurality of touch driving electrodes
  • the control driving electrode is provided with a touch driving voltage for the touch driving during the touch driving time of the Nth frame display time; the plurality of common electrodes and the odd touch driving of the plurality of touch driving electrodes
  • the common electrode voltage is provided in the touch driving time of the N+1 frame display time, and the even touch driving electrodes of the plurality of touch driving electrodes display the time in the N+1 frame
  • the touch driving voltage is provided during the touch driving time.
  • the touch driving voltage is higher than the common electrode voltage.
  • the plurality of common electrodes and the plurality of touch driving electrodes are all supplied with the common electrode voltage during a display driving time of the Nth frame display time.
  • the plurality of common electrodes and the plurality of touch driving electrodes are all supplied with the common electrode voltage during a display driving time of the N+1th frame display time.
  • the in-cell capacitive touch screen of the present invention and the driving method thereof provide the touch driving voltage for the touch driving alternately to the odd-numbered touch driving driving electrodes during the touch driving time of the adjacent frame image display time, thereby solving the present The problem of uneven display of the screen during the touch driving time of the technology is avoided, and the aging speed of the liquid crystal molecules in the corresponding area of the touch driving electrode is avoided.
  • FIG. 1 is a block diagram showing the structure of an in-cell capacitive touch screen according to an embodiment of the present invention
  • FIG. 2 shows a plan view of a common electrode layer and a sensing electrode layer in accordance with an embodiment of the present invention.
  • FIG. 1 shows a schematic structural view of an in-cell capacitive touch screen in accordance with an embodiment of the present invention.
  • an in-cell capacitive touch screen includes a color filter (CF) substrate 100, a thin film transistor (TFT) array substrate 200, and a color filter substrate 100 and a thin film transistor array substrate.
  • the CF substrate 100 includes a first substrate 110, a color filter layer 120, a black matrix 130, a common electrode layer 140, a sensing electrode layer 150, and an insulating layer 160.
  • the first substrate 110 may be, for example, a transparent glass substrate or a PET substrate, but the invention is not limited thereto.
  • the black matrix 130 is patterned on the first substrate 110.
  • the black matrix 130 is patterned directly on the first substrate 110.
  • the color filter layer 120 includes a red filter 122, a green filter 124, and a blue filter 126.
  • the color filter layer 120 is patternedly formed on the first substrate 110, and the color filter layer 120 is patternedly formed on the black matrix 130.
  • the color filter layer 120 is patterned directly on the first substrate 110, and the color filter layer 120 is patterned directly on the black matrix 130.
  • the present invention is not limited thereto.
  • the black matrix 130 can also be used to separate the respective filters 122, 124, 126 of the color filter layer 120, that is, the color filter layer 120 is patterned on the first substrate 110.
  • the respective filters 122, 124, 126 of the color filter layer 120 are patternedly formed between the black matrices 130.
  • the common electrode layer 140 is formed on the color filter layer 120.
  • the common electrode layer 140 is formed directly on the color filter layer 120.
  • the common electrode layer 140 includes a plurality of common electrodes 142 and a plurality of touch driving electrodes 144 extending in a first direction (eg, a row direction).
  • a first direction eg, a row direction
  • each of the common electrodes 142 and each of the touch driving electrodes 144 are elongated, but the present invention is not limited thereto.
  • the sensing electrode layer 150 is formed on the common electrode layer 140.
  • an insulating layer 160 may be disposed between the sensing electrode layer 150 and the common electrode layer 140 to prevent the sensing electrode layer 150 from being in electrical contact with the common electrode layer 140.
  • the sensing electrode layer 150 includes a plurality of touch sensing electrodes 152 extending in a second direction (eg, a column direction).
  • a second direction eg, a column direction
  • each of the touch sensing electrodes 152 is elongated, but the invention is not limited thereto.
  • the common electrode 142, the touch driving electrode 144, and the touch sensing electrode 152 may each be made of a transparent conductive material, but the invention is not limited thereto.
  • the common electrode 142, the touch driving electrode 144, and the touch sensing electrode 152 may each be made of indium tin oxide (ITO).
  • the CF substrate 100 according to an embodiment of the present invention further includes other suitable types of elements such as an alignment film layer, and since these are not the focus of the present invention, those skilled in the art can refer to the related prior art. , will not be described in detail here.
  • the TFT substrate 200 includes a second substrate 210, a plurality of switching tubes 220, and a plurality of sub-pixel regions 230.
  • the second substrate 210 may be, for example, a transparent glass substrate or a PET substrate, but the present invention is not limited thereto.
  • the switching transistor 220 may be, for example, a thin film transistor (TFT) formed on the second substrate 210.
  • TFT thin film transistor
  • the switch tube 220 is formed directly on the second substrate 210.
  • Each of the switch tubes 220 has a pixel electrode 222 disposed in the corresponding sub-pixel region 230.
  • the TFT substrate 200 according to the embodiment of the present invention further includes other suitable types of components. Since these are not the focus of the present invention, those skilled in the art can refer to the related prior art, and no longer A detailed description.
  • the display time T of the in-cell capacitive touch screen displaying one frame of the screen is divided into a display driving time T1 and a touch driving time T2.
  • the common electrode layer 140 and the sensing electrode layer 150 may be disposed on the TFT substrate 200, or the common electrode layer 140 may be disposed on the TFT substrate 200.
  • the sensing electrode layer 150 is disposed on the TFT substrate 200, or the common electrode layer 140 is disposed on the TFT substrate 200, and the sensing electrode layer 150 is disposed on the CF substrate 100.
  • FIG. 2 shows a plan view of a common electrode layer and a sensing electrode layer in accordance with an embodiment of the present invention.
  • a driving method of an in-cell capacitive touch screen includes:
  • a common electrode voltage for picture display is supplied to each of the common electrodes 142 and each of the touch driving electrodes 144 during the display driving time T1 of the Nth frame picture display time T. That is to say, in the display driving time T1 of the Nth frame display time T, the function of each touch driving electrode 144 functions exactly the same as that of each common electrode 142, in other words, in the Nth frame. During the display driving time T1 of the display time T, each touch driving electrode 144 is used as a common electrode.
  • the movable electrode 144 provides a touch driving voltage for touch driving. That is, in the touch driving time T2 of the Nth frame display time T, the function of the 2M touch driving electrodes 144 is the same as that of each common electrode 142, and the 2M+1 touches The functional role of the drive electrode 144 is different from the functional role of each common electrode 142.
  • the display driving time T1 of the N+1th frame display time T is supplied to each of the common electrodes 142 and each of the touch driving electrodes 144 for screen display.
  • Common electrode voltage that is to say, in the display driving time T1 of the N+1th frame display time T, the function of each touch driving electrode 144 functions exactly the same as that of each common electrode 142, in other words, at the Nth
  • Each of the touch driving electrodes 144 is used as a common electrode in the display driving time T1 of the +1 frame picture display time T.
  • the common electrode voltage for the screen display is supplied to each of the common electrode 142 and the second M+1 touch driving electrodes 144 in the touch driving time T2 of the N+1th frame display time T, and at the N+th
  • the touch driving time for the touch driving is provided to the 2M touch driving electrodes 144 in the touch driving time T2 of the 1 frame display time T. That is, in the touch driving time T2 of the N+1 frame display time T, the function of the 2M+1 touch driving electrodes 144 is the same as that of each common electrode 142, and the 2Mth The functional function of the touch driving electrode 144 is different from the functional function of each of the common electrodes 142.
  • the touch driving voltage for the touch driving is higher than the common electrode voltage for the screen display.
  • the touch driving voltage for the touch driving is alternately provided to the parity touch driving electrodes during the touch driving time of the adjacent frame display time, thereby solving the existing The problem of uneven display of the screen during the touch driving time of the technology, and avoiding the aging rate of the liquid crystal molecules in the corresponding area of the touch driving electrode is accelerated.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种内嵌式电容触摸屏的驱动方法，其包括：在第Ｎ帧画面显示时间的触控驱动时间内向多条公共电极（142）和多条触控驱动电极（144）的偶数条触控驱动电极（144）提供公共电极电压，且向多条触控驱动电极（144）的奇数条触控驱动电极（144）提供触控驱动电压；在第Ｎ＋１帧画面显示时间的触控驱动时间内向多条公共电极（142）和多条触控驱动电极（144）的奇数条触控驱动电极（144）提供公共电极电压，且向多条触控驱动电极（144）的偶数条触控驱动电极（144）提供触控驱动电压。还提供了一种内嵌式电容触摸屏。解决了现有的触控驱动时间内画面显示不均匀的问题，同时避免了触控驱动电极（144）对应区域内的液晶分子老化速度加快。

Description

内嵌式电容触摸屏及其驱动方法 技术领域
本发明属于触摸屏技术领域，具体地讲，涉及一种内嵌式电容触摸屏及其驱动方法。
背景技术
触摸屏是允许用户使用手指或者物体通过选择显示在图像显示器等的屏幕上的指令内容来输入用户的指令的输入设备。用户的手或者物体在接触位置处直接与触控面板相接触。由于这种触控面板可以代替连接到图像显示器的诸如键盘或鼠标之类的独立输入设备，所以其应用领域已经日益扩大。
内嵌式(in cell)触摸屏是将触控元件整合于显示屏内部，使显示屏具备触控功能。内嵌式触摸屏是在触控屏标准制程中即可完成触控元件的制造，不存在贴合及对位的问题，其具有更加轻薄、无需边框、可达全平面设计等诸多优点，是目前触摸屏领域内研究的热点之一。
在内嵌式触摸屏中，通常会通过对公共电极进行分时复用的方式实现内嵌式触摸功能。具体过程为：将一帧画面显示时间分为显示驱动时间和触控驱动时间；其中，在显示驱动时间内，对所有公共电极施加用于画面显示的公共电极电压；而在触控驱动时间内，对参与触控驱动的公共电极(即触控驱动电极)施加用于触控驱动的触控驱动电压，对其余未参与触控驱动的公共电极仍然施加用于画面显示的公共电极电压，从而实现画面显示和触控驱动的功能。
由于在触控驱动时间内，未参与触控驱动的公共电极上的电压为用于画面显示的公共电极电压，相应区域的画面显示正常，而参与触控驱动的公共电极上的触控驱动电压高于公共电极电压，相应区域的画面显示异常。当在连续帧显示时，每帧画面显示时间的触控驱动时间均对相应区域的公共电极施加触控驱动电压，这会造成画面显示的不均匀。同时，由于持续对同一区域的公共电极施加触控驱动电压，会造成该区域内的液晶分子老化速度加快。
发明内容
本发明提供了一种内嵌式电容触摸屏及其驱动方法，以解决上述现有技术问题。
根据本发明的一方面，提供了一种内嵌式电容触摸屏的驱动方法，所述内嵌式电容触摸屏包括沿第一方向沿伸的多条公共电极和多条触控驱动电极，所述驱动方法包括：在第N帧画面显示时间的触控驱动时间内向所述多条公共电极和所述多条触控驱动电极的偶数条触控驱动电极提供用于画面显示的公共电极电压，且向所述多条触控驱动电极的奇数条触控驱动电极提供用于触控驱动的触控驱动电压；在第N+1帧画面显示时间的触控驱动时间内向所述多条公共电极和所述多条触控驱动电极的奇数条触控驱动电极提供所述公共电极电压，且向所述多条触控驱动电极的偶数条触控驱动电极提供所述触控驱动电压。
进一步地，所述触控驱动电压高于所述公共电极电压。
进一步地，在第N帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
进一步地，在第N+1帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
根据本发明的另一方面，提供了一种内嵌式电容触摸屏，包括沿第一方向沿伸的多条公共电极和多条触控驱动电极，其中，所述多条公共电极和所述多条触控驱动电极的偶数条触控驱动电极在第N帧画面显示时间的触控驱动时间内均被提供用于画面显示的公共电极电压，且所述多条触控驱动电极的奇数条触控驱动电极在第N帧画面显示时间的触控驱动时间内被提供用于触控驱动的触控驱动电压；所述多条公共电极和所述多条触控驱动电极的奇数条触控驱动电极在第N+1帧画面显示时间的触控驱动时间内均被提供所述公共电极电压，并且所述多条触控驱动电极的偶数条触控驱动电极在第N+1帧画面显示时间的触控驱动时间内被提供所述触控驱动电压。
进一步地，所述触控驱动电压高于所述公共电极电压。
进一步地，所述多条公共电极和所述多条触控驱动电极在第N帧画面显示时间的显示驱动时间内向均被提供所述公共电极电压。
进一步地，所述多条公共电极和所述多条触控驱动电极在第N+1帧画面显示时间的显示驱动时间内均被提供所述公共电极电压。
本发明的内嵌式电容触摸屏及其驱动方法，通过在相邻帧画面显示时间的触控驱动时间内交替向奇偶条触控驱动电极提供用于触控驱动的触控驱动电压，解决了现有技术的触控驱动时间内画面显示不均匀的问题，同时避免了触控驱动电极所对应区域内的液晶分子老化速度加快。
附图说明
通过结合附图进行的以下描述，本发明的实施例的上述和其它方面、特点和优点将变得更加清楚，附图中：
图1示出了根据本发明的实施例的内嵌式电容触摸屏的结构示意图；
图2示出了根据本发明的实施例的公共电极层与感应电极层的平面视图。
具体实施方式
以下，将参照附图来详细描述本发明的实施例。然而，可以以许多不同的形式来实施本发明，并且本发明不应该被解释为限制于这里阐述的具体实施例。相反，提供这些实施例是为了解释本发明的原理及其实际应用，从而使本领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的各种修改。在附图中，为了清楚器件，夸大了层和区域的厚度，相同的标号在整个说明书和附图中可用来表示相同的元件。也将理解的是，在一层或元件被称为形成在另一层或基板“上”时，它可以直接形成在该另一层或基板上，或者也可以存在中间层。
图1示出了根据本发明的实施例的内嵌式电容触摸屏的结构示意图。
参照图1，根据本发明的实施例的内嵌式电容触摸屏包括彩色滤光片(CF)基板100、薄膜晶体管(TFT)阵列基板200以及夹设在彩色滤光片基板100和薄膜晶体管阵列基板200之间的液晶层300。
CF基板100包括第一基板110、彩色滤光层120、黑色矩阵130、公共电极层140、感应电极层150以及绝缘层160。
第一基板110可例如是透明玻璃基板或PET基板，但本发明并不限制于此。
黑色矩阵130被图案化地形成在第一基板110上。例如，黑色矩阵130被图案化地直接形成在第一基板110上。
彩色滤光层120包括红色滤光片122、绿色滤光片124及蓝色滤光片126。彩色滤光层120被图案化地形成在第一基板110上，并且彩色滤光层120被图案化地形成在黑色矩阵130上。例如，彩色滤光层120被图案化地直接形成在第一基板110上，并且彩色滤光层120被图案化地直接形成在黑色矩阵130上。本发明并不限制于此，例如，黑色矩阵130也可用于间隔彩色滤光层120的各个滤光片122、124、126，即彩色滤光层120被图案化地形成在第一基板110上，并且彩色滤光层120的各个滤光片122、124、126被图案化地形成在黑色矩阵130之间。
公共电极层140形成在彩色滤光层120上。例如，公共电极层140直接形成在彩色滤光层120上。公共电极层140包括沿第一方向(例如，行方向)沿伸的多条公共电极142和多条触控驱动电极144。例如，每条公共电极142和每条触控驱动电极144都呈长条状，但本发明不限制于此。
感应电极层150形成在公共电极层140上。例如，感应电极层150与公共电极层140之间可设置绝缘层160，以避免感应电极层150与公共电极层140电接触。感应电极层150包括沿第二方向(例如，列方向)沿伸的多条触控感应电极152。例如，每条触控感应电极152均呈长条状，但本发明不限制于此。
公共电极142、触控驱动电极144及触控感应电极152可均由透明的导电材料制成，但本发明并不限制于此。例如，公共电极142、触控驱动电极144及触控感应电极152可均由氧化铟锡(ITO)制成。
应当理解的是，根据本发明的实施例的CF基板100还包括诸如配向膜层等其他合适类型的元件，由于这些并不是本发明的重点，因此本领域的技术人员可参照相关的现有技术，在此不再详细描述。
TFT基板200包括第二基板210、多个开关管220、多个子像素区域230。
第二基板210可例如是透明玻璃基板或PET基板，但本发明并不限制于此。
开关管220可例如是薄膜晶体管(TFT)，其形成在第二基板210上。例如，开关管220直接形成在第二基板210上。每个开关管220具有一像素电极222，该像素电极222设置在对应的子像素区域230中。
应当理解的是，根据本发明的实施例的TFT基板200还包括其他合适类型的元件，由于这些并不是本发明的重点，因此本领域的技术人员可参照相关的现有技术，在此不再详细描述。
以下将对根据本发明的实施例的内嵌式电容触摸屏的驱动方法进行详细描述。在本实施例中，内嵌式电容触摸屏显示一帧画面的显示时间T分为显示驱动时间T1和触控驱动时间T2。
此外，应当说明的是，上面的描述仅作为本发明的一个实施例，在其他实施方式中，公共电极层140和感应电极层150可均设置在TFT基板200上，或者公共电极层140设置在CF基板100上，感应电极层150设置在TFT基板200上，或者，公共电极层140设置在TFT基板200上，感应电极层150设置在CF基板100上。
图2示出了根据本发明的实施例的公共电极层与感应电极层的平面视图。
参照图2，根据本发明的实施例的内嵌式电容触摸屏的驱动方法包括：
在第N帧画面显示时间T的显示驱动时间T1内向每条公共电极142和每条触控驱动电极144提供用于画面显示的公共电极电压。也就是说，在第N帧画面显示时间T的显示驱动时间T1内，每条触控驱动电极144的功能作用与每条公共电极142的功能作用完全一样，换句话说，在第N帧画面显示时间T的显示驱动时间T1内，每条触控驱动电极144均被用作为公共电极。
在第N帧画面显示时间T的触控驱动时间T2内向每条公共电极142和第2M(其中，M为整数)条触控驱动电极144提供用于画面显示的公共电极电压，并且在第N帧画面显示时间T的触控驱动时间T2内向第2M+1条触控驱 动电极144提供用于触控驱动的触控驱动电压。也就是说，在第N帧画面显示时间T的触控驱动时间T2内，第2M条触控驱动电极144的功能作用与每条公共电极142的功能作用相同，而第2M+1条触控驱动电极144的功能作用与每条公共电极142的功能作用不相同。
与第N帧画面显示时间T的显示驱动时间T1一样，在第N+1帧画面显示时间T的显示驱动时间T1内向每条公共电极142和每条触控驱动电极144提供用于画面显示的公共电极电压。也就是说，在第N+1帧画面显示时间T的显示驱动时间T1内，每条触控驱动电极144的功能作用与每条公共电极142的功能作用完全一样，换句话说，在第N+1帧画面显示时间T的显示驱动时间T1内，每条触控驱动电极144均被用作为公共电极。
然而，在第N+1帧画面显示时间T的触控驱动时间T2内向每条公共电极142和第2M+1条触控驱动电极144提供用于画面显示的公共电极电压，并且在第N+1帧画面显示时间T的触控驱动时间T2内向第2M条触控驱动电极144提供用于触控驱动的触控驱动电压。也就是说，在第N+1帧画面显示时间T的触控驱动时间T2内，第2M+1条触控驱动电极144的功能作用与每条公共电极142的功能作用相同，而第2M条触控驱动电极144的功能作用与每条公共电极142的功能作用不相同。
在本实施例中，诚如背景技术中所述，用于触控驱动的触控驱动电压高于用于画面显示的公共电极电压。
综上所述，根据本发明的实施例，通过在相邻帧画面显示时间的触控驱动时间内交替向奇偶条触控驱动电极提供用于触控驱动的触控驱动电压，解决了现有技术的触控驱动时间内画面显示不均匀的问题，同时避免了触控驱动电极所对应区域内的液晶分子老化速度加快。
虽然已经参照特定实施例示出并描述了本发明，但是本领域的技术人员将理解：在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下，可在此进行形式和细节上的各种变化。

Claims (16)

  1. 一种内嵌式电容触摸屏的驱动方法，所述内嵌式电容触摸屏包括沿第一方向沿伸的多条公共电极和多条触控驱动电极，其中，所述驱动方法包括：
    在第N帧画面显示时间的触控驱动时间内向所述多条公共电极和所述多条触控驱动电极的偶数条触控驱动电极提供用于画面显示的公共电极电压，且向所述多条触控驱动电极的奇数条触控驱动电极提供用于触控驱动的触控驱动电压；
    在第N+1帧画面显示时间的触控驱动时间内向所述多条公共电极和所述多条触控驱动电极的奇数条触控驱动电极提供所述公共电极电压，且向所述多条触控驱动电极的偶数条触控驱动电极提供所述触控驱动电压。
  2. 根据权利要求1所述的驱动方法，其中，所述触控驱动电压高于所述公共电极电压。
  3. 根据权利要求1所述的驱动方法，其中，在第N帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
  4. 根据权利要求2所述的驱动方法，其中，在第N帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
  5. 根据权利要求1所述的驱动方法，其中，在第N+1帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
  6. 根据权利要求2所述的驱动方法，其中，在第N+1帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
  7. 根据权利要求3所述的驱动方法，其中，在第N+1帧画面显示时间的 显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
  8. 根据权利要求4所述的驱动方法，其中，在第N+1帧画面显示时间的显示驱动时间内向所述多条公共电极和所述多条触控驱动电极均提供所述公共电极电压。
  9. 一种内嵌式电容触摸屏，包括沿第一方向沿伸的多条公共电极和多条触控驱动电极，其中，
    所述多条公共电极和所述多条触控驱动电极的偶数条触控驱动电极在第N帧画面显示时间的触控驱动时间内均被提供用于画面显示的公共电极电压，且所述多条触控驱动电极的奇数条触控驱动电极在第N帧画面显示时间的触控驱动时间内被提供用于触控驱动的触控驱动电压；
    所述多条公共电极和所述多条触控驱动电极的奇数条触控驱动电极在第N+1帧画面显示时间的触控驱动时间内均被提供所述公共电极电压，并且所述多条触控驱动电极的偶数条触控驱动电极在第N+1帧画面显示时间的触控驱动时间内被提供所述触控驱动电压。
  10. 根据权利要求9所述的内嵌式电容触摸屏，其中，所述触控驱动电压高于所述公共电极电压。
  11. 根据权利要求9所述的内嵌式电容触摸屏，其中，所述多条公共电极和所述多条触控驱动电极在第N帧画面显示时间的显示驱动时间内向均被提供所述公共电极电压。
  12. 根据权利要求10所述的内嵌式电容触摸屏，其中，所述多条公共电极和所述多条触控驱动电极在第N帧画面显示时间的显示驱动时间内向均被提供所述公共电极电压。
  13. 根据权利要求9所述的内嵌式电容触摸屏，其中，所述多条公共电极和所述多条触控驱动电极在第N+1帧画面显示时间的显示驱动时间内均被提供所述公共电极电压。
  14. 根据权利要求10所述的内嵌式电容触摸屏，其中，所述多条公共电极和所述多条触控驱动电极在第N+1帧画面显示时间的显示驱动时间内均被提供所述公共电极电压。
  15. 根据权利要求11所述的内嵌式电容触摸屏，其中，所述多条公共电极和所述多条触控驱动电极在第N+1帧画面显示时间的显示驱动时间内均被提供所述公共电极电压。
  16. 根据权利要求12所述的内嵌式电容触摸屏，其中，所述多条公共电极和所述多条触控驱动电极在第N+1帧画面显示时间的显示驱动时间内均被提供所述公共电极电压。
PCT/CN2015/081180 2015-03-24 2015-06-10 内嵌式电容触摸屏及其驱动方法 Ceased WO2016150010A1 (zh)

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