WO2016004720A1 - 触控基板及显示装置 - Google Patents

触控基板及显示装置 Download PDF

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Publication number
WO2016004720A1
WO2016004720A1 PCT/CN2014/091905 CN2014091905W WO2016004720A1 WO 2016004720 A1 WO2016004720 A1 WO 2016004720A1 CN 2014091905 W CN2014091905 W CN 2014091905W WO 2016004720 A1 WO2016004720 A1 WO 2016004720A1
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WIPO (PCT)
Prior art keywords
touch
electrodes
electrode
switching
control unit
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PCT/CN2014/091905
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English (en)
French (fr)
Inventor
郑丹
朱海波
路林林
段建民
金景鲜
宫洪友
翟雨雷
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to EP14882130.9A priority Critical patent/EP3168725B1/en
Priority to US14/769,175 priority patent/US9645689B2/en
Publication of WO2016004720A1 publication Critical patent/WO2016004720A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds

Definitions

  • a capacitive touch panel is an important form of touch panel.
  • a capacitive touch panel includes a plurality of mutually parallel touch driving electrodes Tx and a plurality of mutually parallel touch sensing electrodes Rx , both of which are controlled by the control unit 100 .
  • the plurality of mutually parallel touch sensing electrodes Rx are disposed to overlap the touch driving electrodes Tx to form a capacitance at the intersection of the two electrodes. As long as the driving signals are alternately transmitted to the respective driving electrodes in the form of scanning, corresponding sensing signals are also generated on the respective sensing electrodes.
  • the touch structure In order to reduce the cost, reduce the thickness, and improve the light transmittance, the touch structure generally adopts an in-cell touch, that is, the touch driving electrode Tx and the touch sensing electrode Rx are directly disposed in the display panel. That is, the touch panel itself can have both display and touch functions.
  • the touch sensing electrode Rx and the touch driving electrode Tx can also be shared with other electrodes for display to simplify the structure.
  • the touch driving electrode Tx can also serve as a common electrode (for liquid crystal display).
  • the touch panel needs to alternately enter the display phase and the touch phase (for example, after each frame of the image is displayed, the touch phase is entered for 4 milliseconds), so that the touch operation cannot be performed during the display phase, and the touch is not performed.
  • the display operation cannot be performed at the stage, but since the switching between the two stages is fast, the user does not feel it.
  • Embodiments of the present invention provide a touch substrate and a display device capable of effectively releasing charges accumulated on a touch driving electrode and/or a touch sensing electrode.
  • At least one embodiment of the present invention provides a touch substrate including a plurality of first electrodes for performing touch, a plurality of first switch units, and a control unit for controlling each of the first switch units, wherein any Two adjacent first electrodes are connected by one of the first switching units, and each of the first electrodes is connected to the control unit.
  • the touch substrate further includes a plurality of second electrodes for performing touch, the plurality of second electrodes and the first electrodes intersecting each other and being insulated, and each of the second electrodes is The control unit is connected.
  • the touch substrate may further include a plurality of second switch units connected between any two adjacent second electrodes by one of the second switch units, and each of the second switch units passes through the Control unit control.
  • Embodiments of the present invention also provide a display device including any of the above touch substrates.
  • 1 is a schematic structural view of a general touch substrate
  • FIG. 2 is a schematic view of a touch substrate according to Embodiment 1 of the present invention.
  • FIG 3 is a schematic view of a touch substrate according to Embodiment 2 of the present invention.
  • the control electrode of the third switching transistor is a control unit; Tx, touch drive electrode; Rx, touch sensing electrode; Am, first sub-electrode; L, connection a wire; 10, a first electrode; 20, a second electrode; 11, a first pole of the first switching transistor; 12, a second pole of the first switching transistor; 13, a control pole of the first switching transistor; a first pole of the switching transistor; 22,
  • the inventors have noticed in the research that during the touch operation of the built-in capacitive touch panel, due to the frequent changes of the capacitance, charge accumulation is easily generated on each of the touch driving electrodes Tx and/or the touch sensing electrodes Rx. If these accumulated charges cannot be released, it is easy to cause the touch to be insensitive. When these electrodes are also multiplexed with the structure used for display, the accumulated charges described above may cause display defects such as artifacts during the display phase.
  • the first electrode 10 is used as the touch driving electrode
  • the second electrode 20 is used as the touch sensing electrode.
  • the first electrode 10 can also serve as the touch sensing electrode.
  • the corresponding second electrode 20 serves as a touch driving electrode.
  • the first and second poles of each switching transistor can also be interchanged as needed.
  • the first electrode 10 and the second electrode 20 may be disposed on the same substrate at the same time, or may be separately disposed on two different substrates (for example, the first electrode 10 is disposed on the array substrate of the liquid crystal panel, The second electrode 20 is disposed on the color filter substrate of the liquid crystal panel, as long as the first electrode 10 and the second electrode 20 are crossed and insulated. In the following embodiments, only the first electrode 10 and the second electrode 20 are simultaneously disposed on the same substrate, but the present invention is not limited thereto.
  • a plurality of second electrodes 20 intersecting and insulated from the first electrode 10 may be disposed on the touch substrate, and each of the second electrodes 20 is connected to the control unit 100.
  • the plurality of first electrodes 10 may be disposed in parallel with each other, and the plurality of second electrodes 20 may also be flat with each other. Line settings.
  • the first electrode 10 on the touch substrate of the present embodiment serves as the touch driving electrode Tx
  • the second electrode 20 serves as the touch sensing electrode Rx.
  • the touch substrate of the embodiment is applied to the touch panel, and a switch signal is input to the first switch unit 1 through the control unit 100 to control whether the touch sensing electrodes Rx are connected or disconnected.
  • the first switch unit 1 is turned off, and the touch driving electrode Tx and the touch sensing electrode Rx are mutually crossed and insulated.
  • the control unit 100 provides an excitation signal to each touch driving electrode Tx.
  • Each of the touch sensing electrodes Rx provides a detection signal, and the touch driving electrode Tx and the touch sensing electrode Rx have mutual capacitance at the intersection of the two.
  • the finger touches the touch panel a part of the current flows into the finger, which can be equivalent to the change of the mutual capacitance, so that the signal of the touch sensing electrode Rx changes, thereby detecting the precise position of the finger touch;
  • the first switch unit 1 is turned on by the control unit 100.
  • the touch driving electrodes Tx are connected to each other to form a whole, so that the accumulated charge on the touch driving electrode Tx is distributed to the connection during the touch phase. Together with the touch driving electrode Tx, the interference accumulated on the electric field of the touch driving electrode Tx can be avoided or reduced, thereby reducing or eliminating accumulation on a touch driving electrode Tx. Problems such as visual artifacts caused by electric charges and insensitivity to touch.
  • the touch substrate of the embodiment may further include a plurality of second switch units 2 connected between any two adjacent second electrodes 20 by a second switch unit 2, and each of the second switch units 2 Both are controlled by the control unit 100.
  • the first switch unit 1 and the second switch unit 2 are both turned off, and the touch driving electrode Tx and the touch sensing electrode Rx cross each other and are insulated, and at the same time, the control unit 100
  • the touch driving electrode Tx provides an excitation signal, and provides a detection signal to each of the touch sensing electrodes Rx.
  • the touch driving electrode Tx and the touch sensing electrode Rx have mutual capacitance at the intersection of the two.
  • the finger touches the touch panel a part of the current flows into the finger, which can be equivalent to the change of the mutual capacitance, so that the signal of the touch sensing electrode Rx changes, thereby detecting the precise position of the finger touch;
  • the first switch unit 1 and the second switch unit 2 are both turned on by the control unit 100.
  • the touch control electrodes Tx are connected to each other to form a whole body, and the touch sensing electrodes Rx are connected to each other to form a whole.
  • the accumulated charge on a touch driving electrode Tx and/or the touch sensing electrode Rx is distributed on the touch driving driving electrodes Tx and/or the touch sensing electrodes Rx connected together.
  • the charge accumulated on the sensing electrode Rx interferes with the displayed electric field, and reduces or eliminates the problem of visual artifacts and touch insensitivity caused by the charge accumulated on a certain touch driving electrode Tx.
  • the first switching unit 1 may be a first switching transistor.
  • the first pole 11 and the second pole 12 of the first switching transistor are respectively connected to two adjacent first electrodes 10, and the control poles 13 of the respective first switching transistors are shorted together and connected to the control unit 100.
  • the second switching unit 2 may be a second switching transistor, wherein the first pole 21 and the second pole 22 of the second switching transistor are respectively connected to two adjacent second electrodes 20, and the control poles of the respective second switching transistors 23 are shorted together and connected to the control unit 100.
  • the first switching unit 1 is not limited to being the first switching transistor
  • the second switching unit 2 is not limited to the second switching transistor, and may be other switching devices such as a triode, a field effect transistor, or the like.
  • control electrodes 13 of the respective first switching transistors are shorted together with the control electrodes 23 of the respective second switching transistors and connected to the control unit 100.
  • the control unit 100 turns on both the first switching transistor and the second switching transistor.
  • the first electrode 10 and the second electrode 20 are connected together to form a whole body, and the method can be released more effectively.
  • the accumulated charge on a touch driving electrode Tx and/or the touch sensing electrode Rx is distributed on the touch driving driving electrodes Tx and/or the touch sensing electrodes Rx connected together.
  • the first electrode 10 touch driving electrode Tx
  • the second electrode 20 touch sensing electrode Rx
  • the control unit 100 turns on the first switch unit 1 and the second switch unit 2, and the touch driving electrode Tx and the touch sensing electrode Rx are connected together to form an integral common electrode.
  • the charge accumulated on a touch driving electrode Tx and/or the touch sensing electrode Rx during the touch phase is effectively released to the entire common electrode without delaying the display.
  • first electrode 10 touch driving electrode Tx
  • second electrode 20 touch sensing electrode Rx
  • first electrode 10 and the second electrode 20 may also be other metal lines, except that before the touch panel enters the display stage, each of the first switching units 1 and The second switch unit 2 is turned on to release the accumulated charges on the touch driving electrode Tx and/or the touch sensing electrode Rx, and then the respective first switching unit 1 and the second switching unit 2 are turned off for normal display.
  • each of the first electrodes 10 (touch driving electrodes Tx) of the present embodiment may include a plurality of spaced apart first sub-electrodes Am and connecting wires L for connecting any two adjacent first sub-electrodes Am, for example
  • the connecting wire LL can be a metal wire.
  • the second electrode 20 (the touch sensing electrode Rx) may be insulated from each other by the respective connecting wires L.
  • the first sub-electrode Am and the second electrode 20 of the first electrode 10 are disposed on the same layer, and each of the connecting wires L is disposed on another layer, and is connected to the corresponding one by, for example, via or direct bonding.
  • a sub-electrode Am is connected.
  • the first switching unit 1 may be a first switching transistor, wherein the first pole 11 and the second pole 12 of the first switching transistor respectively connect the first poles of the two adjacent first electrodes 10 A sub-electrode Am is connected such that any two adjacent first electrodes 10 are connected by a first switching unit, and the control electrodes 13 of the respective first switching transistors are shorted together and connected to the control unit 100.
  • the first sub-electrode Am of the touch driving electrode Tx can be connected to the connecting wire L through the via hole, and the connecting wire L and the touch sensing electrode Rx form an inductive bridge to form mutual capacitance.
  • the working principle of the touch substrate of this structure is the same as that of the touch substrate of the first embodiment.
  • the third switching unit 3 is further provided, and the third switching unit 3 may be a third switching transistor.
  • Each of the second electrodes 20 is connected to an adjacent one of the first sub-electrodes by a third switching unit 3, for example, to a first sub-electrode adjacent to the first electrode 10 of the first row of the upper side in FIG.
  • the first pole 31 of the third switching transistor 3 is connected to a first sub-electrode Am (and thus to the corresponding first electrode 10)
  • the second pole 32 is connected to a second electrode 20, each The control poles 33 of the third switching transistor are shorted together and connected to the control unit 100.
  • the third switching transistor 3 is turned on, the first sub-electrode Am and the second electrode 20 connected thereto are short-circuited.
  • the display device of the present embodiment includes the touch substrate of any of the above embodiments, so that the accumulated charge pairs on the touch sensing electrodes Rx and/or the touch sensing electrodes Rx connected together can be avoided or reduced.
  • the displayed electric field causes interference, thereby reducing or eliminating problems such as visual artifacts and touch insensitivity caused by charges accumulated on a certain touch driving electrode Tx.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Electronic Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

一种触控基板及显示装置，其包括多个用于进行触控的第一电极(10)，多个第一开关单元(1)以及用于控制各个第一开关单元(1)的控制单元(100)，其中，任意两相邻的所述第一电极(10)之间通过所述第一开关单元(1)连接，各个所述第一电极(10)均与所述控制单元(100)连接。该触控基板可避免在触控过程中触控驱动电极和/或触控感应电极上容易产生电荷积累，但在显示阶段积累的电荷无法很好的释放的问题。

Description

触控基板及显示装置 技术领域
本发明的实施例涉及一种触控基板及显示装置。
背景技术
随着技术的发展，具有触摸控制功能的触控面板获得了越来越多的应用。
电容式触控面板是触控面板的一种重要形式。如图1所示，一种电容式触控面板中包括多条相互平行的触控驱动电极Tx和多条相互平行的触控感应电极Rx，这两种电极均通过控制单元100控制。该多条相互平行的触控感应电极Rx则与各触控驱动电极Tx交叠设置，从而在两种电极相交处形成电容。只要以扫描的形式轮流向各驱动电极通入驱动信号，则各感应电极上也会产生相应的感应信号。当有触摸发生时，在触摸点会产生电极放电、电极间的距离变化、电极间的介电常数变化等现象，从而导致该处的电容也产生变化。由此，当扫描到相应驱动电极时，对应触控点的感应电极上的感应信号也会变化，这样可确定触摸位置，实现触控。
为了降低成本、减小厚度、提高透光率，通常触控结构更多采取内置式(in-cell touch)，即将上述的触控驱动电极Tx、触控感应电极Rx等直接设置在显示面板中，即触控面板本身可同时具有显示和触控的功能。对于内置式触控面板，触控感应电极Rx和触控驱动电极Tx还可与其他用于显示的电极共用，以简化结构。例如，上述触控驱动电极Tx同时也可作为公共电极(对于液晶显示)。在这种情况下，触控面板需要交替进入显示阶段和触控阶段(例如每显示完一帧画面后，进入4毫秒的触控阶段)，这样在显示阶段不能进行触控操作，而触控阶段不能进行显示操作，但因两阶段之间切换很快，故用户感觉不到。
发明内容
本发明的实施例提供一种能有效释放触控驱动电极和/或触控感应电极上所积累的电荷的触控基板及显示装置。
本发明的至少一个实施例提供一种触控基板，其包括多个用于进行触控的第一电极，多个第一开关单元，用于控制各个第一开关单元的控制单元，其中，任意两个相邻的所述第一电极之间通过一个所述第一开关单元连接，各个所述第一电极均与所述控制单元连接。
例如，所述触控基板还包括多个用于进行触控的第二电极，所述多个第二电极与所述第一电极相互交叉且绝缘设置，且各个所述第二电极均与所述控制单元连接。
例如所述触控基板还可包括多个第二开关单元，在任意两相邻的所述第二电极之间通过一个所述第二开关单元连接，且各个所述第二开关单元均通过所述控制单元控制。
本发明的实施例还提供一种显示装置，其包括任一上述触控基板。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为通常的触控基板的结构示意图；
图2为本发明的实施例1的触控基板的示意图；
图3为本发明的实施例2的触控基板的示意图。
附图标记
1、第一开关单元；2、第二开关单元；3、第三开关单元；100、控制单元；Tx、触控驱动电极；Rx、触控感应电极；Am、第一子电极；L、连接导线；10、第一电极；20、第二电极；11、第一开关晶体管的第一极；12、第一开关晶体管的第二极；13、第一开关晶体管的控制极；21、第二开关晶体管的第一极；22、第二开关晶体管的第二极；23、第二开关晶体管的控制极；31、第三开关晶体管的第一极；32、第三开关晶体管的第二极；33、第三开关晶体管的控制极。
具体实施方式
为使本领域技术人员更好地理解本发明实施例的目的、技术方案和优点， 下面结合附图和具体实施方式对本发明实施例的技术方案作进一步详细描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
除非另作定义，本公开所使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明专利申请说明书以及权利要求书中使用的“第一”、“第二”、“第三”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。
发明人在研究中注意到，在内置式电容型触控面板的触控操作过程中，由于电容的频繁变化，故各触控驱动电极Tx和/或触控感应电极Rx上容易产生电荷积累。若这些积累的电荷无法释放，则容易导致触控不灵敏。当这些电极还与显示时所用的结构进行复用时，上述积累的电荷还会在显示阶段导致伪像等显示不良。
在本公开下面的描述之中，仅仅是以第一电极10作为触控驱动电极，第二电极20作为触控感应电极为例，但是在实际情况中第一电极10也可以作为触控感应电极，相应的第二电极20作为触控驱动电极。各开关晶体管的第一极和第二极也可以根据需要互换。同时还需要说明的是，第一电极10和第二电极20可以同时设置在同一基板上，也可以分别设置在两个不同的基板上(例如第一电极10设置在液晶面板的阵列基板上，第二电极20设置在液晶面板的彩膜基板上)，只要保证第一电极10与第二电极20相互交叉且绝缘设置即可。在下述实施例中仅仅是以第一电极10和第二电极20同时设置在同一基板上为例进行说明的，但是本发明不限制于此。
实施例1
图2示出了一种触控基板，其包括多个用于进行触控的第一电极10，多个第一开关单元1，以及用于控制各个第一开关单元1的控制单元100。任意两个相邻的第一电极10之间通过一个第一开关单元1连接，各个第一电极10均与控制单元100连接。
例如，在该触控基板上还可设置与该第一电极10交叉且绝缘设置的多个第二电极20，且各个第二电极20均与控制单元100连接。
例如，多个第一电极10可相互平行设置，多个第二电极20亦可相互平 行设置。
在本实施例的触控基板上的第一电极10作为触控驱动电极Tx，第二电极20作为触控感应电极Rx。本实施例的触控基板应用于触控面板中，通过控制单元100输入给第一开关单元1一个开关信号，以控制各个触控感应电极Rx相连或断开。当触控面板处于触控模式时，第一开关单元1关闭，触控驱动电极Tx和触控感应电极Rx相互交叉且绝缘，同时，控制单元100向各个触控驱动电极Tx提供激励信号，向各触控感应电极Rx提供检测信号，触控驱动电极Tx和触控感应电极Rx在两者交叉处存在互电容。此时，如果手指触摸触控面板，则有一部分电流流入手指，可以等效为互电容发生变化，从而使触控感应电极Rx的信号发生变化，进而检测出手指触摸的精确位置；当触控指令完成后，通过控制单元100将第一开关单元1打开，此时各个触控驱动电极Tx相互连接形成一个整体，因而在触控阶段时某条触控驱动电极Tx上累积的电荷分布到连接在一起的触控驱动电极Tx上，从而可以避免或减弱由于某条触控驱动电极Tx上所累积电荷对显示的电场产生干扰，进而减少或消除由累积在某条触控驱动电极Tx上的电荷而引起的视觉伪像和触控不灵敏等问题。
例如，本实施例的触控基板上还可包括多个第二开关单元2，在任意两个相邻的第二电极20之间通过一个第二开关单元2连接，且各个第二开关单元2均通过控制单元100控制。此时，当触控面板处于触控模式时，第一开关单元1和第二开关单元2均关闭，触控驱动电极Tx和触控感应电极Rx相互交叉且绝缘，同时，控制单元100向各个触控驱动电极Tx提供激励信号，向各触控感应电极Rx提供检测信号，触控驱动电极Tx和触控感应电极Rx在两者交叉处存在互电容。此时，如果手指触摸触控面板，则有一部分电流流入手指，可以等效为互电容发生变化，从而使触控感应电极Rx的信号发生变化，进而检测出手指触摸的精确位置；当触控指令完成后，通过控制单元100将第一开关单元1和第二开关单元2均打开，此时各个触控驱动电极Tx相互连接形成一个整体，各个触控感应电极Rx相互连接形成一个整体，因而在触控阶段时某条触控驱动电极Tx和/或触控感应电极Rx上累积的电荷分布到连接在一起的触控驱动电极Tx上和/或连接在一起的触控感应电极Rx上，从而可以避免或减弱由于某条触控驱动电极Tx和/或连接在一起的触 控感应电极Rx上所累积电荷对显示的电场产生干扰，减少或消除由累积在某条触控驱动电极Tx上的电荷而引起的视觉伪像和触控不灵敏等问题。
例如，在本实施例中第一开关单元1可以为第一开关晶体管。第一开关晶体管的第一极11和第二极12分别连接两个相邻的第一电极10，各个第一开关晶体管的控制极13短接在一起并与控制单元100连接。
例如，第二开关单元2可以为第二开关晶体管，其中，第二开关晶体管的第一极21和第二极22分别连接两个相邻的第二电极20，各个第二开关晶体管的控制极23短接在一起并与控制单元100连接。当然第一开关单元1不局限于为第一开关晶体管，第二开关单元2也不局限于为第二开关晶体管，均可以是其他的开关器件，例如三极管、场效应晶体管等。
进一步，例如，各个第一开关晶体管的控制极13与各个第二开关晶体管的控制极23短接在一起并与控制单元100连接。当触控指令完成后，控制单元100将第一开关晶体管和第二开关晶体管均打开，此时，第一电极10和第二电极20连接在一起，形成一个整体，此时可以更有效的释放在触控阶段时某条触控驱动电极Tx和/或触控感应电极Rx上累积的电荷分布到连接在一起的触控驱动电极Tx上和/或连接在一起的触控感应电极Rx上，从而可以避免或减弱由于某条触控驱动电极Tx和/或连接在一起的触控感应电极Rx上所累积电荷对显示的电场产生干扰，进而可以减少或消除由累积在某条触控驱动电极Tx上的电荷而引起的视觉伪像和触控不灵敏等问题。
更进一步，例如，第一电极10(触控驱动电极Tx)和第二电极20(触控感应电极Rx)均为公共电极，例如采用透明导电材料制备。在触控模式后，控制单元100将各个第一开关单元1和第二开关单元2打开，此时触控驱动电极Tx和触控感应电极Rx连在一起，形成一个整体的公共电极，不仅可以有效释放在触控阶段时某条触控驱动电极Tx和/或触控感应电极Rx上累积的电荷到整个公共电极上，同时不会对显示造成延时。当然第一电极10(触控驱动电极Tx)和第二电极20(触控感应电极Rx)也可以为其他金属线，只不过在触控面板进入显示阶段前，将各个第一开关单元1和第二开关单元2打开，对触控驱动电极Tx和/或触控感应电极Rx上所积累的电荷进行释放，然后再将各个第一开关单元1和第二开关单元2关闭进行正常的显示。
实施例2
与实施例1的触控基板结构相似原理相同，如图3所示，本实施例提供另一种触控基板，与实施例1结构上的区别在于，第一电极10和第二电极20之一为分段结构，而另一个为连续结构。例如，本实施例的每个第一电极10(触控驱动电极Tx)可以包括多个间隔设置的第一子电极Am和用于连接任意两相邻第一子电极Am的连接导线L，例如，连接导线LL可以采用金属线。
例如，第二电极20(触控感应电极Rx)可与各连接导线L相互交叉绝缘设置。例如，第一电极10的第一子电极Am和第二电极20设置在同一层上，而各连接导线L设置在另一层上，并通过例如过孔或直接搭接的方式与相应的第一子电极Am连接。
例如，在本实施例中，第一开关单元1可以为第一开关晶体管，其中，第一开关晶体管的第一极11和第二极12分别连接两相邻的第一电极10所包括的第一子电极Am，以使得任意两相邻的第一电极10之间通过一个第一开关单元连接，各个第一开关晶体管的控制极13短接在一起并与控制单元100连接。
例如，在本实施例中，触控驱动电极Tx中的第一子电极Am可以通过过孔与连接导线L相互连接，连接导线L与触控感应电极Rx构成感应桥，形成互电容。该种结构的触控基板的工作原理与实施例1的触控基板的工作原理相同。
例如，在本实施例中，还进一步设置了第三开关单元3，且第三开关单元3可以为第三开关晶体管。各第二电极20通过一个第三开关单元3与相邻的一个第一子电极连接，例如与图3中上侧第一行的第一电极10中与之相邻的第一子电极连接。如图3所示，第三开关晶体管3的第一极31与一个第一子电极Am连接(由此与相应的第一电极10连接)，第二极32与一个第二电极20连接，各个第三开关晶体管的控制极33短接在一起并与控制单元100连接。当第三开关晶体管3开启时，将短接与之连接的第一子电极Am以及第二电极20。
例如，第一电极10(触控驱动电极Tx)和第二电极20(触控感应电极Rx)可均为公共电极，例如采用透明导电材料形成。
由于本实施例的工作原理与实施例1的工作原理相同，只是触控基板的 第一电极10的结构与实施例1的结构不同，所以在此不再重复触控基板应用于触控面板中的工作的原理。
实施例3
本实施例提供一种显示装置，其包括上述实施例中任意一种触控基板。该显示装置可以为：液晶显示面板、电子纸、OLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪、手表等任何具有显示功能的产品或部件。
由于本实施例的显示装置包括上述实施例中任意一种触控基板，故其可以避免或减弱由于某条触控驱动电极Tx和/或连接在一起的触控感应电极Rx上所累积电荷对显示的电场产生干扰，从而减少或消除由累积在某条触控驱动电极Tx上的电荷而引起的视觉伪像和触控不灵敏等问题。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2014年7月11日递交的中国专利申请第201410332397.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (15)

  1. 一种触控基板，其包括多个用于进行触控的第一电极、多个第一开关单元以及用于控制各个第一开关单元的控制单元，其中，
    任意两个相邻的所述第一电极之间通过一个所述第一开关单元连接，各个所述第一电极均与所述控制单元连接。
  2. 根据权利要求1所述的触控基板，还包括多个用于进行触控的第二电极，所述多个第二电极与所述多个第一电极相互交叉且绝缘设置，其中，各个所述第二电极均与所述控制单元连接。
  3. 根据权利要求2所述的触控基板，其中，所述多个第一电极之间相互平行设置，所述多个第二电极之间相互平行设置。
  4. 根据权利要求3所述的触控基板，还包括多个第二开关单元，其中，在任意两个相邻的所述第二电极之间通过一个所述第二开关单元连接，且各个所述第二开关单元均通过所述控制单元控制。
  5. 根据权利要求1-4任一所述的触控基板，其中，所述第一开关单元为第一开关晶体管，
    所述第一开关晶体管的第一极和第二极分别连接两个相邻的第一电极，各个所述第一开关晶体管的控制极短接在一起并与控制单元连接。
  6. 根据权利要求4所述的触控基板，其中，所述第二开关单元为第二开关晶体管，
    所述第二开关晶体管的第一极和第二极分别连接两个相邻的第二电极，各个所述第二开关晶体管的控制极短接在一起并与所述控制单元连接。
  7. 根据权利要求4所述的触控基板，其中，所述第一开关单元为第一开关晶体管，所述第一开关晶体管的第一极和第二极分别连接两个相邻的第一电极；
    所述第二开关单元为第二开关晶体管，所述第二开关晶体管的第一极和第二极分别连接两个相邻的第二电极；
    各个所述第一开关晶体管的控制极与各个所述第二开关晶体管的控制极短接在一起并与控制单元连接。
  8. 根据权利要求2或3所述的触控基板，其中，每个所述第一电极包括 多个间隔设置的第一子电极和用于连接任意两相邻第一子电极的连接导线。
  9. 根据权利要求8所述的触控基板，其中，所述第二电极与各所述连接导线相互交叉绝缘设置。
  10. 根据权利要求8或9所述的触控基板，还包括多个第三开关单元，其中，
    一个所述第二电极通过一个所述第三开关单元与相邻的一个所述第一子电极连接，各个所述第三开关单元短接在一起并通过所述控制单元控制。
  11. 根据权利要求10所述的触控基板，其中，所述第三开关单元为第三开关晶体管，第三开关晶体管的第一极与一个所述第一子电极连接，第三开关晶体管的第二极与一个所述第二电极连接，各个第三开关晶体管的控制极短接在一起并与所述控制单元连接。
  12. 根据权利要求11所述的触控基板，其中，所述第一开关单元为第一开关晶体管，所述第一开关晶体管的第一极和第二极分别连接两相邻第一电极所包含的第一子电极，各个所述第一开关晶体管的控制极短接在一起并与控制单元连接。
  13. 根据权利要求12所述的触控基板，其中，各个所述第一开关晶体管的控制极与各个所述第三开关晶体管的控制极短接在一起并与所述控制单元连接。
  14. 根据权利要求2至13中任意一项所述的触控基板，其中，所述第一电极和所述第二电极均为公共电极。
  15. 一种显示装置，其包括权利要求1至14中任意一项所述的触控基板。
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