CN102968231A - Capacitive embedded touch screen, driving method thereof and display device - Google Patents

Capacitive embedded touch screen, driving method thereof and display device Download PDF

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CN102968231A
CN102968231A CN2012104441485A CN201210444148A CN102968231A CN 102968231 A CN102968231 A CN 102968231A CN 2012104441485 A CN2012104441485 A CN 2012104441485A CN 201210444148 A CN201210444148 A CN 201210444148A CN 102968231 A CN102968231 A CN 102968231A
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touch
touch screen
electrodes
driving
array substrate
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CN2012104441485A
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CN102968231B (en
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赵卫杰
董学
王海生
杨盛际
刘英明
丁小梁
刘红娟
任涛
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北京京东方光电科技有限公司
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Abstract

The invention discloses a capacitive embedded touch screen, a driving method thereof and a display device. A color film substrate is provided with a plurality of touch induction electrodes; at least one of two adjacent grid signal lines on a thin film transistor (TFT) array substrate serves as a touch driving electrode; and time-share driving is performed on the touch driving electrodes and the touch induction electrodes so as to realize a touch function and a display function. According to the touch screen disclosed by the embodiment of the invention, as the grid signal lines serve as the touch driving electrodes, and a new film does not need to be arranged on the TFT array substrate, the light transmittance of the touch screen cannot be influenced. Moreover, on the basis of the traditional TFT array substrate preparation process, the touch screen can be manufactured without additional processed, and therefore, the production cost is saved, and the production efficiency is improved. Moreover, as the time-share driving touch function and the time-share driving display function are adopted, the mutual interference can also be reduced, and the image quality and the touch accuracy are improved.

Description

—种电容式内嵌触摸屏、其驱动方法及显示装置 - kind of the embedded capacitive touch screen, a display apparatus and driving method thereof

技术领域 FIELD

[0001] 本发明涉及显示技术领域,尤其涉及一种电容式内嵌触摸屏、其驱动方法及显示 [0001] The present invention relates to the field of display technology, and particularly to a capacitive touch screen embedded, and a display driving method thereof

装置 Equipment

背景技术 Background technique

[0002] 随着显示技术的飞速发展,触摸屏(Touch Screen Panel)已经逐渐遍及人们的生活中。 [0002] With the rapid development of display technology, touch screen (Touch Screen Panel) has been gradually throughout people's lives. 目前,触摸屏按照组成结构可以分为:外挂式触摸屏(Add on Mode Touch Panel)、覆盖表面式触摸屏(On Cell Touch Panel)、以及内嵌式触摸屏(In Cell Touch Panel)。 Currently, according to the composition of the touch screen structure can be divided into: plug-in touch screen (Add on Mode Touch Panel), covering the surface of the touch screen (On Cell Touch Panel), and cell touch panel (In Cell Touch Panel). 其中,外挂式触摸屏是将触摸屏与液晶显示屏(Liquid Crystal Display, LCD)分开生产,然后贴合到一起成为具有触摸功能的液晶显示屏,外挂式触摸屏存在制作成本较高、光透过率较低、模组较厚等缺点。 Wherein the plug is separate from touch screen and the touch screen LCD production (Liquid Crystal Display, LCD), and then bonded together as a liquid crystal display having a touch function, the presence of plug-in touch screen high production costs, relatively light transmittance low, thick modules and other shortcomings. 而内嵌式触摸屏将触摸屏的触控电极内嵌在液晶显示屏内部,可以减薄模组整体的厚度,又可以大大降低触摸屏的制作成本,受到各大面板厂家青睐。 While cell touch panel, the touch electrode embedded inside the touch screen LCD, can reduce the thickness of the entire module, and can greatly reduce the production cost of the touch screen, the panel by the major manufacturers favor.

[0003] 目前,现有的电容式内嵌(In cell)触摸屏是在现有的TFT (Thin FilmTransistor,薄膜场效应晶体管)阵列基板上直接另外增加触控扫描线和触控感应线实现的,即在TFT阵列基板的表面制作两层相互异面相交的条状ITO电极,这两层ITO (IndiumTin Oxides,铟锡金属氧化物)电极分别作为触摸屏的触控驱动线和触控感应线,在两条ITO电极的异面相交处形成感应电容。 [0003] Currently, conventional capacitive embedded (In cell) the touch screen is implemented in the conventional TFT (Thin FilmTransistor, thin film transistor) directly touch scanning line and an additional touch sensing lines on the array substrate, i.e. stripe ITO electrodes made of two mutually exclusive on the surface of the TFT array substrate plane intersecting the two layers ITO (IndiumTin oxides, indium tin metal oxide) electrodes are used as a touch screen and a touch driving lines touch sensing lines, in two different ITO electrodes are formed at the intersection of plane sensing capacitor. 其工作过程为:在对作为触控驱动线的ITO电极加载触控驱动信号时,检测触控感应线通过感应电容耦合出的电压信号,在此过程中,有人体接触触摸屏时,人体电场就会作用在感应电容上,使感应电容的电容值发生变化,进而改变触控感应线耦合出的电压信号,根据电压信号的变化,就可以确定触点位置。 The working process is: the signal for driving the touch loaded as ITO electrodes touch driving lines detected by the touch sensing line capacitive coupling the voltage induced signal, in this process, there is a human body touches the touch screen, the electric field on the human body will act on the sensing capacitor, so that the capacitance value of the sensing capacitor is changed, thereby changing the touch sensing line coupled to the voltage signal, the voltage signal according to the change of the contact position can be determined.

[0004] 上述电容式内嵌触摸屏的结构设计,需要在现有的TFT阵列基板上增加新的膜层,会影响触摸屏整体的透光率,并且也会导致在制作TFT阵列基板时需要增加新的工艺,使生产成本增加,不利于提高生产效率。 [0004] The capacitive touch screen embedded design, adding new layer on a conventional TFT array substrate will affect the overall light transmittance of the touch screen, and also result in the production of the TFT array substrate need to add new technology, production costs increase, not conducive to improving productivity.

发明内容 SUMMARY

[0005] 本发明实施例提供了一种电容式内嵌触摸屏、其驱动方法及显示装置,用以实现成本较低且生产效率较高的电容式内嵌触摸屏。 Embodiment provides a capacitive touch panel embedded [0005] In the present invention, a display apparatus and a driving method thereof, in order to achieve low cost and high production efficiency embedded capacitive touch screen.

[0006] 本发明实施例提供的一种电容式内嵌触摸屏,包括:彩膜基板,具有栅极信号线的薄膜晶体管TFT阵列基板,以及位于所述彩膜基板和所述TFT阵列基板之间的液晶层,在所述TFT阵列基板上设有呈矩阵排列的多个像素单元; [0006] A condenser according to an embodiment of the present invention, cell touch panel, comprising: a color filter substrate, a thin film transistor TFT array substrate gate signal line, and located on the color filter substrate and the TFT array substrate between a liquid crystal layer, a plurality of pixel cells arranged in a matrix on the TFT array substrate;

[0007] 所述彩膜基板具有沿像素单元的列方向延伸的多个触控感应电极; [0007] The color filter substrate, a plurality of touch sensing electrodes extending along a column direction of the pixel unit;

[0008] 所述TFT阵列基板具有沿像素单元的行方向延伸的多个触控驱动电极;每个触控驱动电极由相邻的至少一条栅极信号线组成; [0008] The TFT array substrate having a plurality of touch pixels along the row direction of the extending drive electrode unit; touch driving electrodes each adjacent to at least one of the gate signal lines;

[0009] 在一帧画面的显示时间内,各所述触控驱动电极用于分时地传递栅极扫描信号和触控扫描信号。 [0009] In the display time of one frame, each of the touch electrodes for time-division driving transfer gate scanning signal and the touch scan signal.

[0010] 本发明实施例提供了一种显示装置,包括本发明实施例提供的电容式内嵌触摸屏。 [0010] Embodiments provide a display device of the present invention, includes a capacitive cell touch panel according to an embodiment of the present invention.

[0011] 本发明实施例提供的一种上述电容式内嵌触摸屏的驱动方法,包括: [0011] The driving method of the capacitor-cell touch panel according to an embodiment of the present invention, comprising:

[0012] 将触摸屏显示每一帧的时间分成显示时间段和触控时间段; [0012] The touch screen display period and a touch time of each frame period is divided into a display;

[0013] 在显示时间段,对所述触摸屏中的每条栅极信号线依次施加栅极扫描信号,对数据信号线施加灰阶信号,控制液晶分子翻转;同时,触控驱动电极接地; [0013] In the display period, sequentially applies to the touch screen in each of the gate signal line gate scanning signal, applying gradation signals to the data signal lines, liquid crystal molecules inverted; simultaneously, the touch drive electrode is grounded;

[0014] 在触控时间段,对组成触控驱动电极的各条栅极信号线依次施加触控扫描信号,触控感应电极耦合所述触控扫描信号的电压信号并输出,同时,所述触摸屏中的数据信号线无信号输入。 [0014] In the touch time, the respective pairs of gate signal lines are sequentially applied to drive electrodes of the touch touch scanning signal, a voltage signal is coupled to the touch sensing electrode touch scanning signal and outputting, at the same time, the the touch screen is no signal input data signal lines.

[0015] 本发明实施例的有益效果包括: [0015] Advantageous effects of the embodiments of the present invention comprises:

[0016] 本发明实施例提供的一种电容式内嵌触摸屏、其驱动方法及显示装置,在彩膜基板上设置触控感应电极,将TFT阵列基板上的相邻的至少一条栅极信号线作为一条触控驱动电极,对触控驱动电极和触控感应电极进行分时驱动,以实现触控功能和显示功能。 [0016] A condenser according to an embodiment of the present invention, cell touch panel, driving method and a display device, the touch sensing electrodes provided on the color filter substrate, the at least one gate adjacent signal line on the TFT array substrate as a touch driving electrodes, the driving electrodes on the touch and the touch sensing electrodes time-division drive, in order to achieve the touch function and a display function. 由于本发明实施例提供的触摸屏利用了栅极信号线作为触控驱动电极,在TFT阵列基板上无需增加新的膜层,因此,不会影响整个触摸屏的透光率,并且在现有的TFT阵列基板制备工艺的基础上,也不需要增加额外的工艺即可制成触摸屏,节省了生产成本,提高了生产效率。 Since the embodiment provides the use of a touch screen as a touch driving gate signal line electrodes, without adding a new layer on the TFT array substrate, thus, it will not affect the light transmittance of the entire touch screen, and in the present invention, the conventional TFT based on the preparation process of the array substrate, the process does not require additional touch screen can be made to save the production cost, improve production efficiency. 此外,由于采用分时驱动触控和显示功能,也能够降低相互干扰,提高画面品质和触控准确性。 Furthermore, since the time-division driving and the touch display, mutual interference can be reduced to improve the picture quality and accuracy of the touch.

附图说明 BRIEF DESCRIPTION

[0017] 图I为本发明实施例提供的电容式内嵌触摸屏的纵向剖面示意图; [0017] FIG longitudinal section I of the present embodiment to provide a capacitive touch panel embedded in the schematic embodiment of the invention;

[0018] 图2为本发明实施例提供的电容式内嵌触摸屏中TFT阵列基板的俯视示意图; [0018] Fig 2 a schematic top view of a capacitive cell touch panel provided in the TFT array substrate of the embodiment of the present invention;

[0019] 图3为本发明实施例提供的电容式内嵌触摸屏中的触控感应电极的示意图之一; [0019] Fig 3 a schematic view of one embodiment of a capacitive touch screen provided in the embedded touch sensing electrodes in the embodiment of the invention;

[0020] 图4为本发明实施例提供的电容式内嵌触摸屏中的触控感应电极的示意图之二; [0020] Fig 4 a schematic view of the embodiment of the capacitive cell touch panel provided in the touch sensing electrodes of two of the present invention;

[0021]图5为本发明实施例提供的电容式内嵌触摸屏中TFT阵列基板的横向剖面示意图; [0021] FIG. 5 embedded capacitance provided by the TFT array substrate in a transverse cross-sectional schematic view of a touch screen embodiment of the present invention;

[0022] 图6为本发明实施例提供的电容式内嵌触摸屏的工作时序图。 [0022] FIG. 6 embedded capacitive touch screen operation timing diagram according to an embodiment of the present invention.

具体实施方式 detailed description

[0023] 下面结合附图,对本发明实施例提供的电容式内嵌触摸屏、其驱动方法及显示装置的具体实施方式进行详细地说明。 [0023] DRAWINGS capacitive cell touch panel provided in the embodiment of the present invention, a method for driving a display apparatus and a specific embodiment will be described in detail.

[0024] 附图中各层薄膜的厚度和形状不反映阵列基板和彩膜基板的真实比例,目的只是示意说明本发明内容。 [0024] The thickness of the layers in the film and the shape of the figures do not reflect the true proportions of the array substrate and the color filter substrate, an object of the present invention is described only schematically.

[0025] 图I和图2所示分别为本发明实施例提供的电容式内嵌触摸屏的纵向剖面示意图和触摸屏中TFT阵列基板的俯视图。 [0025] Figure I and a plan view of the TFT array substrate provided embedded capacitive touch panel and a touch screen longitudinal sectional view, respectively, in Embodiment 2 of the present invention is shown. 如图I和图2所示,本发明实施例提供的电容式内嵌触摸屏具体包括:彩膜基板1,具有栅极信号线2的薄膜晶体管TFT阵列基板3,以及位于彩膜基板I和TFT阵列基板3之间的液晶层4,在TFT阵列基板3上设有呈矩阵排列的多个像素单元5 ;还包括: FIG. I and 2, the present invention provides an embedded capacitive touch screen comprises: a color filter substrate 1, a gate signal line 2 of the thin film transistor TFT array substrate 3, and the color filter substrate and the TFT I the array substrate 4, a plurality of pixel units 5 on the TFT array substrate 3 is provided with a liquid crystal layer arranged in matrix between 3; further comprising:

[0026] 彩膜基板I具有沿像素单元5的列方向延伸的多个触控感应电极6 ; [0026] The color filter substrate I having a plurality of touch sensing electrodes 6 along the column direction of the pixel unit 5 extends;

[0027] TFT阵列基板3具有沿像素单元5的行方向延伸的多个触控驱动电极7 ;每个触控驱动电极7由相邻的至少一条栅极信号线2组成; [0027] TFT array substrate 3 has pixel cells along a row direction 5 of a plurality of touch drive electrodes 7 extend; each touch driving electrode 7 is made of at least an adjacent gate signal line 2 composition;

[0028] 在一帧画面的显示时间内,各触控驱动电极7用于分时地传递栅极扫描信号和触控扫描信号。 [0028] In the display time of one frame, each of the electrodes 7 for driving the touch time-division transfer gate scanning signal and the touch scan signal.

[0029] 本发明实施例提供的一种电容式内嵌触摸屏,在彩膜基板上设置触控感应电极,将TFT阵列基板上的相邻的至少一条栅极信号线作为一条触控驱动电极,对触控驱动电极和触控感应电极进行分时驱动,以实现触控功能和显示功能。 [0029] A condenser according to an embodiment of the present invention, cell touch panel, the touch sensing electrode disposed on the color filter substrate, adjacent the TFT array substrate on the at least one gate signal line as a touch driving electrodes, to touch the touch sensing electrodes and the driving electrodes time-division drive, in order to achieve the touch function and a display function. 由于本发明实施例提供的触摸屏利用了栅极信号线作为触控驱动电极,在TFT阵列基板上无需增加新的膜层,因此,不会影响整个触摸屏的透光率,并且在现有的TFT阵列基板制备工艺的基础上,也不需要增加额外的工艺即可制成触摸屏,节省了生产成本,提高了生产效率。 Since the embodiment provides the use of a touch screen as a touch driving gate signal line electrodes, without adding a new layer on the TFT array substrate, thus, it will not affect the light transmittance of the entire touch screen, and in the present invention, the conventional TFT based on the preparation process of the array substrate, the process does not require additional touch screen can be made to save the production cost, improve production efficiency. 此外,由于采用分时驱动触控和显示功能,也能够降低相互干扰,提高画面品质和触控准确性。 Furthermore, since the time-division driving and the touch display, mutual interference can be reduced to improve the picture quality and accuracy of the touch.

[0030] 下面对上述触摸屏中TFT阵列基板中设置的触控驱动电极进行详细的说明。 [0030] Next, the touch driving electrodes of the touch screen provided in the TFT array substrate will be described in detail.

[0031] 一般地,触摸屏的精度通常在毫米级,可以根据所需的触控精度选择触控驱动电极和触控感应电极的密度和宽度以保证所需的触控精度,通常触控驱动电极和触控感应电极的宽度控制在5-7_为佳。 [0031] Generally, the accuracy of the touch screen is generally in millimeters, the touch may be selected depending on the desired accuracy of the touch drive electrode and the density and width of the touch sensing electrodes to ensure the desired accuracy of the touch, typically the touch drive electrode and the width of the touch sensing electrodes preferably controlled in 5-7_. 而液晶显示的精度通常在微米级,因此,如图2所示,在本发明实施例提供的触摸屏中,一般一个触控驱动电极Tx会由相邻的多条栅极信号线G组成,并且,各触控驱动电极一般会包含相同条数的栅极信号线,在图2中每条触控驱动电极Txl和Tx2由i根栅极信号线G组成,在触控时间段,组成一个触控驱动电极的各条栅极信号线会加载相同的触控扫描信号,作为一个触控驱动电极使用,以保证所需的触控精度。 The accuracy of the liquid crystal display is generally in the micron order, and therefore, as shown in the touch screen according to an embodiment of the present invention, generally a touch driving electrodes Tx 2 will be a plurality of adjacent gate signal lines G composition, and each touch drive electrodes typically contain the same number of gate signal line item, in each of the touch drive electrode Txl and Tx2 of FIG. 2 by the i-th gate signal lines G consisting, in the touch time, a contact composed of each gate signal lines driving control electrodes will load the same touch scanning signal, as a touch driving electrodes used to ensure the required accuracy of the touch.

[0032] 进一步地,如图2所示,为了减少相邻的触控驱动电极Txl和Tx2之间的信号干扰,在具体实施时,可以在每相邻的两个触控电极Txl和Τχ2之间间隔至少一条栅极信号线,在相邻的触控驱动电极Txl和Τχ2之间间隔ji根栅极信号线,以避免触控驱动电极Txl和Tx2之间的信号干扰;其中,可以根据实际所需的触控精度,选取合适的间隔栅极信号线的条数,在此不做限定。 [0032] Further, as shown in FIG. 2, in order to reduce signal interference between adjacent touch drive electrodes Txl and Tx2, while specific embodiments, the touch may be two electrodes, and each adjacent Txl of Τχ2 interval of at least one gate signal line, drive interval ji of gate signal lines between the electrode and the Txl Τχ2 adjacent touch, to avoid signal interference between the touch driving electrodes Txl and Tx2; wherein, according to the actual the touch accuracy required, select a suitable number of gate signal line spacing, which is not defined.

[0033] 下面对上述触摸屏中彩膜基板中设置的触控感应电极进行详细的说明。 [0033] Next, the touch sensing electrode of the touch panel provided in a winning film substrate will be described in detail.

[0034]目前,在液晶显示面板中,为了避免显示过程中外界信号对显示信号的干扰,一般都会在彩膜基板背向液晶层的一面设置屏蔽电极层,该屏蔽电极层为整面设置。 [0034] Currently, the electrode layer to the entire surface of the panel in order to avoid displaying a display signal during external interference signal, generally facing away from the liquid crystal layer side of the color filter substrate disposed the shield electrode layer, the liquid crystal display screen. 本发明实施例提供的上述触摸屏在具体实施时,可以根据所需的触控精度,如图3所示,将彩膜基板上的屏蔽电极层(shielding ΙΤ0)分割成合适宽度的触控感应电极Rx, —般情况下,每条触控感应电极Rx的宽度在2飞mm为佳。 The touch panel provided in the embodiment of the present invention in specific embodiments, depending on the desired accuracy of the touch, as shown in FIG. 3, the shield electrode layers (shielding ΙΤ0) on the color filter substrate is divided into a touch sensing electrodes suitable width Rx, - under normal circumstances, the width of each of the touch sensing electrode Rx fly preferably 2 mm. 并且,触摸屏的精度通常在毫米级,而液晶显示屏的精度通常在微米级,可以看出显示所需的精度远远大于触控所需的精度,因此,一般每条触控感应电极都会对应多行像素单元。 Further, the accuracy of the touch screen is generally in millimeters, and the precision is generally in the LCD micron, the display can be seen that the required accuracy is much greater than the required accuracy of the touch, and therefore, will generally correspond to each of the touch sensing electrodes a plurality of rows of pixel units.

[0035] 在触控驱动电极Tx传递触控扫描信号时,各触控感应电极Rx耦合触控扫描信号的电压信号并输出,在触控驱动电极Tx传递栅极扫描信号时,各触控感应电极Rx可以接地,屏蔽外界信号对显示信号的干扰,起到屏蔽电极的作用。 [0035] In the touch drive electrode Tx transmitting touch scanning signal, a voltage signal is coupled to each of the touch sensing electrode Rx touch scanning signal and outputting, when the touch drive electrode Tx transfer gate scanning signal, each of the touch sensing Rx electrode may be grounded, the display screen outside interference signals, function as a shield electrode.

[0036] 进一步地,为了在彩膜基板和TFT阵列基板对盒后能对盒体进行减薄处理,即使用特定液体刻蚀裸露在外侧的衬底基板,可以将屏蔽电极层制作在彩膜基板面向液晶层的一面,具体地,组成屏蔽电极层的各触控感应电极Rx可以设置于彩膜基板的衬底与黑矩阵区域之间,也可以位于黑矩阵面向液晶层的一面。 [0036] Further, to the electrode layer fabricated color filter and the color filter substrate of the TFT array substrate can be thinned after the process cartridge of the cartridge, i.e. the use of a particular liquid etching the substrate exposed on the outside of the substrate may be shielded each touch sensing electrode Rx substrate facing the liquid crystal layer side, in particular, the composition of the shield electrode layer may be disposed between the substrate region and the black matrix color filter substrate, the black matrix may also be located facing the liquid crystal layer side. 当触控感应电极Rx设置在彩膜基板的衬底与黑矩阵区域之间时,更有利于屏蔽外界信号的干扰。 When the touch sensing electrode Rx is disposed between the substrate region and the black matrix color filter substrate, it is more conducive to protection against external interferences signal. [0037] 当触控感应电极位于彩膜基板背向液晶层的一面时,由于触控感应电极与触控驱动电极之间的间距较大,因此,如图3所示,可以直接将各条触控感应电极Rx制备成面状结构即可保证耦合电容值在合适的范围。 [0037] When the touch sensing electrode on the color filter substrate facing away from the liquid crystal layer side, since the touch and the touch sensing electrode to drive large spacing between the electrodes, therefore, shown in Figure 3, the pieces may be directly touch sensing electrode Rx to prepare a sheet-like structure to ensure the coupling capacitance value within an appropriate range.

[0038] 当触控感应电极位于彩膜基板面向液晶层的一面时,由于触控感应电极与触控驱动电极之间的间距较小,为了保证耦合电容值在合适的范围提高触控的可行性,如图4所示,可将各条触控感应电极Rx设计为具有网格状电极结构,且各触控感应电极的图案被黑矩阵区域覆盖,这样就可以利用黑矩阵遮盖触控感应电极的网格状结构,不会对显示器的开口率产生影响,也不会影响显示器的光透过率。 [0038] When the touch sensing electrode on the color filter substrate facing the liquid crystal layer side, because the touch sensing electrodes and the touch driving smaller spacing between the electrodes, in order to ensure the coupling capacitance is increased by a suitable touch feasible range property, 4, the pieces may touch sensing electrodes Rx designed to have a grid-like electrode structure, and the pattern of each touch sensing electrodes is covered by the black matrix area, so that you can use a black matrix covering the touch sensing grid-like structure of the electrodes, does not affect the opening of a display, it will not affect the light transmittance of the display.

[0039] 具体地,由于在彩膜基板上设置的网格状结构的触控感应电极不会遮挡像素单元,因此,触控感应电极的材料可以具体为透明导电氧化物例如ITO或ΙΖ0,也可以为金属,当采用金属制作触控感应电极时可以有效的降低其电阻。 [0039] In particular, since the touch sensing electrode grid-like structure provided on the color filter substrate does not block the pixel unit, and therefore, the touch sensing electrode material may be embodied as a transparent conductive oxide such as ITO or ΙΖ0, also may be a metal, it is made of metal when the touch sensing electrode can effectively reduce the resistance. [0040] 本发明实施例提供的上述触摸屏可以适用于各种模式的液晶显示面板,例如可以适用于能够实现宽视角的平面内开关(IPS, In-Plane Switch)和高级超维场开关(ADS,Advanced Super Dimension Switch)型液晶显示面板,也可以适用于传统的扭曲向列(TN,Twisted Nematic)型液晶显示面板,在此不做限定。 [0040] The liquid crystal touch panel provided in the above-described embodiment of the present invention is applicable to various modes of display panels, for example, can be applied to achieve a wide viewing angle in a plane switching (IPS, In-Plane Switch) and advanced super dimension switch (ADS , Advanced Super Dimension Switch) type liquid crystal display panel, it may be applied to a conventional twisted nematic (TN, twisted nematic) type liquid crystal display panel, which is not defined.

[0041] 当本发明实施例提供的上述触摸屏应用于ADS型液晶显示面板时,即在TFT阵列基板上具有公共电极层,如图5所示,可以将公共电极层至于各条栅极信号线的底层,即各栅极信号线位于公共电极层之上,公共电极层在TFT阵列基板上整层设置,这样,在触控时间段和显示时间段,公共电极层都能起到屏蔽电极的作用,避免外界信号干扰触摸屏的正 [0041] When the touch panel according to an embodiment of the present invention is applied ADS type liquid crystal display panel, i.e. having a common electrode layer on the TFT array substrate shown in Figure 5, the common electrode layer may be as for the respective gate signal lines bottom, i.e., the gate signal line is located above the common electrode layer, a common electrode layer disposed on the whole layer of the TFT array substrate, so that the shield electrode can play the touch display period and the time period, the common electrode layer action, avoid being outside interference touchscreen

常工作。 Often work.

[0042] 具体地,本发明实施例还提供了上述电容式内嵌触摸屏的驱动方法,如图6所示的时序图,具体包括: [0042] Specifically, embodiments of the present invention further provides a method of driving the capacitor-cell touch panel, a timing chart shown in Figure 6, comprises:

[0043] 首先,将触摸屏显示每一帧(STV)的时间分成显示时间段(Display)和触控时间段(Touch),例如图6所示的驱动时序图中触摸屏的显示一帧的时间为16. 67ms,选取其中4ms作为触控时间段,其他的12. 67ms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。 [0043] First, the touch screen display for each frame (STV) is divided into a time display period (Display) and a touch control period (Touch), for example, a display driving timing chart shown in FIG. 6, the touch screen for a time 16. 67ms, 4ms wherein a select period of time the touch, as the other 12. 67ms display periods may of course be appropriately adjusted according to the length of both the processing capability of the IC chip, which is not particularly limited.

[0044] 在显示时间段,对触摸屏中的每条栅极信号线Gl,G2……Gn依次施加栅极扫描信号,对数据信号线施加灰阶信号,控制液晶分子翻转,这段时间和正常的液晶面板工作原理无异;同时,触控驱动电极接地,起到屏蔽电极层的作用。 [0044] In the display period, each of the gate signal line Gl of the touch screen, G2 ...... Gn are sequentially applied to the gate scanning signal, applying gradation signals to the data signal lines, liquid crystal molecules inverted, and this time the normal principle no different from the liquid crystal panel; Meanwhile, the touch drive electrode is grounded, the shield electrode layer functions.

[0045] 在触控时间段,对组成触控驱动电极Txl、Tx2……Txn的各条栅极信号线依次施加触控扫描信号,触控感应电极Rx耦合触控扫描信号的电压信号并输出,通过手指的触摸,改变触摸点位置两电极之间的感应电容,从而改变触控感应电极Rx的末端接收电压信号的大小,实现触控功能。 [0045] In the touch time, the composition of the touch drive electrode Txl, Tx2 ...... Txn respective gate signal lines are sequentially applied to the scanning voltage signal of a touch signal, coupled to the touch sensing electrode Rx touch scanning signal and outputting by finger touch, sensing changes in capacitance between two electrodes of the touch point, thereby changing the size of the touch sensing electrode Rx terminal receives a voltage signal, to realize the touch function. 同时,触摸屏中的数据信号线无信号输入,若触控屏中有不作为触控驱动电极的栅极信号线,则这些栅极信号线也无信号输入。 Meanwhile, the touch screen is no signal input data signal line, if there is not a gate signal line driving electrodes touch the touch screen, then the gate signal lines and no signal is input.

[0046] 较佳地,在触控时间段,对组成触控驱动电极Txl、Τχ2……Txn的各条栅极信号线依次施加的触控扫描信号为负压方波脉冲信号,例如-5V,这样可以防止TFT开关打开,影响触摸屏的正常显示。 [0046] Preferably, in the touch time, the composition of the touch drive electrode Txl, touch scanning signal Τχ2 ...... Txn respective gate signal lines are sequentially applied to the square wave pulse signal at a negative pressure, e.g. -5V this prevents the TFT switches open, affecting the normal display of the touch screen.

[0047] 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电容式内嵌触摸屏,该显示装置的实施可以参见上述电容式内嵌触摸屏的实施例,重复之处不再赘述。 [0047] Based on the same inventive concept, an embodiment of the present invention further provides a display device comprising the capacitor-cell touch panel according to an embodiment of the present invention, the display device of the embodiment may be the above-described embodiments refer to the embedded capacitive touch screen repeat the Department will not be repeated.

[0048] 本发明实施例提供的一种电容式内嵌触摸屏、其驱动方法及显示装置,在彩膜基板上设置触控感应电极,将TFT阵列基板上的相邻的至少一条栅极信号线作为一条触控驱动电极,对触控驱动电极和触控感应电极进行分时驱动,以实现触控功能和显示功能。 [0048] A condenser according to an embodiment of the present invention, cell touch panel, driving method and a display device, the touch sensing electrodes provided on the color filter substrate, the at least one gate adjacent signal line on the TFT array substrate as a touch driving electrodes, the driving electrodes on the touch and the touch sensing electrodes time-division drive, in order to achieve the touch function and a display function. 由于本发明实施例提供的触摸屏利用了栅极信号线作为触控驱动电极,在TFT阵列基板上无需增加新的膜层,因此,不会影响整个触摸屏的透光率,并且在现有的TFT阵列基板制备工艺的基础上,也不需要增加额外的工艺即可制成触摸屏,节省了生产成本,提高了生产效率。 Since the embodiment provides the use of a touch screen as a touch driving gate signal line electrodes, without adding a new layer on the TFT array substrate, thus, it will not affect the light transmittance of the entire touch screen, and in the present invention, the conventional TFT based on the preparation process of the array substrate, the process does not require additional touch screen can be made to save the production cost, improve production efficiency. 此外,由于采用分时驱动触控和显示功能,也能够降低相互干扰,提高画面品质和触控准确性。 Furthermore, since the time-division driving and the touch display, mutual interference can be reduced to improve the picture quality and accuracy of the touch.

[0049] 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。 [0049] Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 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。 Thus, if these modifications and variations of the present invention fall within the claims of the invention and the scope of equivalents thereof, the present invention intends to include these modifications and variations.

Claims (10)

1. 一种电容式内嵌触摸屏,包括:彩膜基板,具有栅极信号线的薄膜晶体管TFT阵列基板,以及位于所述彩膜基板和所述TFT阵列基板之间的液晶层,在所述TFT阵列基板上设有呈矩阵排列的多个像素单元;其特征在于, 所述彩膜基板具有沿像素单元的列方向延伸的多个触控感应电极; 所述TFT阵列基板具有沿像素单元的行方向延伸的多个触控驱动电极;每个触控驱动电极由相邻的至少一条栅极信号线组成; 在一帧画面的显示时间内,各所述触控驱动电极用于分时地传递栅极扫描信号和触控扫描信号。 An embedded capacitive touch screen, comprising: a color filter substrate, a thin film transistor TFT array substrate gate signal line, and a liquid crystal layer between the color filter substrate and the TFT array substrate, the the TFT array substrate provided with a plurality of pixel cells arranged in a matrix; characterized in that said color filter substrate having a plurality of touch sensing electrodes along the column direction of the pixel unit extends; along the TFT array substrate having pixel units a plurality of touch drive electrodes extending in the row direction; touch driving electrodes each adjacent to at least one of the gate signal lines; within a display time of one frame, each of the electrodes for time-divisionally driving the touch transfer gate scanning signal and the touch scan signal.
2.如权利要求I所述的触摸屏,其特征在于,各所述触控驱动电极包含相同条数的栅极信号线。 I touch panel according to claim 2, wherein each of the touch electrode comprises a gate signal line driving same number of pieces.
3.如权利要求I或2所述的触摸屏,其特征在于,每相邻的两个触控电极之间间隔至少一条栅极信号线。 I or a touch panel according to claim 2, wherein the at least one gate signal line interval between each adjacent two electrodes of the touch.
4.如权利要求I所述的触摸屏,其特征在于,所述TFT阵列基板还具有公共电极层,各所述栅极信号线位于该公共电极层之上。 I touch panel according to claim 4, wherein the TFT array substrate further includes a common electrode layer, each of the gate signal line is located on the common electrode layer.
5.如权利要求I所述的触摸屏,其特征在于,各条所述触控感应电极位于所述彩膜基板的衬底与黑矩阵区域之间。 The touch screen according to claim I, wherein the pieces of the touch sensing electrodes positioned between the substrate and a black matrix region of the color filter substrate.
6.如权利要求5所述的触摸屏,其特征在于,各所述触控感应电极具有网格状电极结构,且各触控感应电极的图案被所述黑矩阵区域覆盖。 The touch screen according to claim 5, wherein each of the touch sensing electrode having a grid-like electrode structure, and the pattern of each of the touch sensing electrodes covered by the black matrix region.
7.如权利要求6所述的触摸屏,其特征在于,所述触控感应电极的材料为透明导电氧化物或金属。 7. The touch panel according to claim 6, characterized in that the material of the touch sensing electrode is a transparent conductive oxide or metal.
8. —种显示装置,其特征在于,包括如权利要求1-7任一项所述的电容式内嵌触摸屏。 8. - kind of display device, characterized by comprising capacitive claim cell touch panel of any of claims 1-7.
9. 一种如权利要求I所述的电容式内嵌触摸屏的驱动方法,其特征在于,包括: 将触摸屏显示每一帧的时间分成显示时间段和触控时间段; 在显示时间段,对所述触摸屏中的每条栅极信号线依次施加栅极扫描信号,对数据信号线施加灰阶信号,控制液晶分子翻转;同时,触控驱动电极接地; 在触控时间段,对组成触控驱动电极的各条栅极信号线依次施加触控扫描信号,触控感应电极耦合所述触控扫描信号的电压信号并输出,同时,所述触摸屏中的数据信号线无信号输入。 I as claimed in claim 9. A driving method according to the embedded capacitive touch screen, characterized by comprising: a touch screen and a touch display period for each frame time period is divided into a display; a display period of the touch screen is sequentially applied to each gate signal line gate scanning signal, applying gradation signals to the data signal lines, liquid crystal molecules inverted; simultaneously, the touch drive electrode is grounded; the touch time, the composition of the touch each gate signal lines are sequentially applied to drive electrodes of the touch scanning signal, a voltage signal is coupled to the touch sensing electrode scan signal and outputs the touch while the touch screen is no signal input data signal lines.
10.如权利要求9所述的驱动方法,其特征在于,在触控时间段,对组成触控驱动电极的各条栅极信号线依次施加的触控扫描信号为负压方波脉冲信号。 10. The driving method according to claim 9, wherein, in the touch time, the touch signal for each scanning line gate signal driving electrode pairs are sequentially applied to the touch of the square wave pulse signal at a negative pressure.
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103207719A (en) * 2013-03-28 2013-07-17 北京京东方光电科技有限公司 Capacitive inlaid touch screen and display device
CN103294273A (en) * 2013-05-31 2013-09-11 京东方科技集团股份有限公司 In cell touch panel and display device
CN103838020A (en) * 2012-11-22 2014-06-04 群康科技(深圳)有限公司 Touch-control display device and method for driving touch-control display device
CN104102054A (en) * 2014-06-30 2014-10-15 京东方科技集团股份有限公司 Display device and driving method and manufacturing method thereof
CN104123025A (en) * 2013-04-29 2014-10-29 业鑫科技顾问股份有限公司 Built-in touch control display device
CN104238815A (en) * 2014-09-03 2014-12-24 合肥鑫晟光电科技有限公司 Display panel, driving method for same and display device
WO2015032223A1 (en) * 2013-09-06 2015-03-12 京东方科技集团股份有限公司 Array substrate, touch display panel, display apparatus, and circuit driving method
CN104571695A (en) * 2014-12-24 2015-04-29 深圳莱宝高科技股份有限公司 Touch display device
CN104597678A (en) * 2014-12-25 2015-05-06 友达光电股份有限公司 Display panel and manufacturing method thereof
CN104678628A (en) * 2013-11-26 2015-06-03 瀚宇彩晶股份有限公司 Embedded touch display panel and drive method thereof
CN105093619A (en) * 2015-08-03 2015-11-25 深圳市华星光电技术有限公司 IPS type In Cell touch display panel
WO2015180270A1 (en) * 2014-05-29 2015-12-03 京东方科技集团股份有限公司 Touch display panel and drive method therefor, and display device
CN106125987A (en) * 2016-07-04 2016-11-16 厦门天马微电子有限公司 Touch-control display panel and driving method, touch control display apparatus
CN106371675A (en) * 2015-07-24 2017-02-01 宸鸿光电科技股份有限公司 Touch display panel
WO2017067074A1 (en) * 2015-10-22 2017-04-27 武汉华星光电技术有限公司 Driving method for in cell type touch control display panel
WO2017071622A1 (en) * 2015-10-30 2017-05-04 京东方科技集团股份有限公司 Touch panel, display device and driving method therefor
WO2018196483A1 (en) * 2017-04-27 2018-11-01 京东方科技集团股份有限公司 Touch device driving method, touch device and touch display device
WO2019127764A1 (en) * 2017-12-28 2019-07-04 信利半导体有限公司 Ips-type display module and display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090206848A1 (en) * 2008-02-20 2009-08-20 Himax Technologies Limited Capacitive fingerprint sensor and the panel thereof
CN102436107A (en) * 2009-03-26 2012-05-02 友达光电股份有限公司 Liquid crystal display device and control method thereof
CN102466907A (en) * 2010-10-29 2012-05-23 三星移动显示器株式会社 Liquid crystal display with built-in touch screen panel
CN102750062A (en) * 2012-06-29 2012-10-24 京东方科技集团股份有限公司 Capacitive embedded touch screen and display device
CN102768604A (en) * 2012-06-29 2012-11-07 京东方科技集团股份有限公司 Capacitive embedded touch screen, as well as touch location method and display device thereof
CN202870794U (en) * 2012-11-08 2013-04-10 北京京东方光电科技有限公司 Capacitive embedded touch screen and display device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090206848A1 (en) * 2008-02-20 2009-08-20 Himax Technologies Limited Capacitive fingerprint sensor and the panel thereof
CN102436107A (en) * 2009-03-26 2012-05-02 友达光电股份有限公司 Liquid crystal display device and control method thereof
CN102466907A (en) * 2010-10-29 2012-05-23 三星移动显示器株式会社 Liquid crystal display with built-in touch screen panel
CN102750062A (en) * 2012-06-29 2012-10-24 京东方科技集团股份有限公司 Capacitive embedded touch screen and display device
CN102768604A (en) * 2012-06-29 2012-11-07 京东方科技集团股份有限公司 Capacitive embedded touch screen, as well as touch location method and display device thereof
CN202870794U (en) * 2012-11-08 2013-04-10 北京京东方光电科技有限公司 Capacitive embedded touch screen and display device

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103838020A (en) * 2012-11-22 2014-06-04 群康科技(深圳)有限公司 Touch-control display device and method for driving touch-control display device
CN103207719A (en) * 2013-03-28 2013-07-17 北京京东方光电科技有限公司 Capacitive inlaid touch screen and display device
WO2014153816A1 (en) * 2013-03-28 2014-10-02 北京京东方光电科技有限公司 Capacitive built-in touch screen and display device
CN104123025A (en) * 2013-04-29 2014-10-29 业鑫科技顾问股份有限公司 Built-in touch control display device
WO2014190736A1 (en) * 2013-05-31 2014-12-04 京东方科技集团股份有限公司 Built-in touch screen and display device
US9645665B2 (en) 2013-05-31 2017-05-09 Boe Technology Group Co,, Ltd. In-cell touch panel and display device
CN103294273A (en) * 2013-05-31 2013-09-11 京东方科技集团股份有限公司 In cell touch panel and display device
WO2015032223A1 (en) * 2013-09-06 2015-03-12 京东方科技集团股份有限公司 Array substrate, touch display panel, display apparatus, and circuit driving method
CN104678628A (en) * 2013-11-26 2015-06-03 瀚宇彩晶股份有限公司 Embedded touch display panel and drive method thereof
WO2015180270A1 (en) * 2014-05-29 2015-12-03 京东方科技集团股份有限公司 Touch display panel and drive method therefor, and display device
CN104020881B (en) * 2014-05-29 2017-06-16 京东方科技集团股份有限公司 Touch display panel and its driving method, display device
CN104102054B (en) * 2014-06-30 2017-01-25 京东方科技集团股份有限公司 Display device and driving method and manufacturing method thereof
CN104102054A (en) * 2014-06-30 2014-10-15 京东方科技集团股份有限公司 Display device and driving method and manufacturing method thereof
US9946379B2 (en) 2014-09-03 2018-04-17 Boe Technology Group Co., Ltd. Display panel, driving method thereof, and display device
CN104238815A (en) * 2014-09-03 2014-12-24 合肥鑫晟光电科技有限公司 Display panel, driving method for same and display device
WO2016033928A1 (en) * 2014-09-03 2016-03-10 京东方科技集团股份有限公司 Display panel and driving method therefor, and display apparatus
CN104571695A (en) * 2014-12-24 2015-04-29 深圳莱宝高科技股份有限公司 Touch display device
CN104597678A (en) * 2014-12-25 2015-05-06 友达光电股份有限公司 Display panel and manufacturing method thereof
CN106371675A (en) * 2015-07-24 2017-02-01 宸鸿光电科技股份有限公司 Touch display panel
CN105093619A (en) * 2015-08-03 2015-11-25 深圳市华星光电技术有限公司 IPS type In Cell touch display panel
WO2017067074A1 (en) * 2015-10-22 2017-04-27 武汉华星光电技术有限公司 Driving method for in cell type touch control display panel
WO2017071622A1 (en) * 2015-10-30 2017-05-04 京东方科技集团股份有限公司 Touch panel, display device and driving method therefor
CN106648191A (en) * 2015-10-30 2017-05-10 京东方科技集团股份有限公司 Touch substrate, display apparatus and driving method of display apparatus
US10216323B2 (en) 2015-10-30 2019-02-26 Boe Technology Group Co., Ltd. Touch substrate, display device and driving method thereof
CN106125987A (en) * 2016-07-04 2016-11-16 厦门天马微电子有限公司 Touch-control display panel and driving method, touch control display apparatus
CN106125987B (en) * 2016-07-04 2019-06-11 厦门天马微电子有限公司 Touch-control display panel and its driving method, touch control display apparatus
WO2018196483A1 (en) * 2017-04-27 2018-11-01 京东方科技集团股份有限公司 Touch device driving method, touch device and touch display device
WO2019127764A1 (en) * 2017-12-28 2019-07-04 信利半导体有限公司 Ips-type display module and display device

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