WO2017024716A1 - 触控显示面板及其驱动方法、显示装置 - Google Patents

触控显示面板及其驱动方法、显示装置 Download PDF

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Publication number
WO2017024716A1
WO2017024716A1 PCT/CN2015/098210 CN2015098210W WO2017024716A1 WO 2017024716 A1 WO2017024716 A1 WO 2017024716A1 CN 2015098210 W CN2015098210 W CN 2015098210W WO 2017024716 A1 WO2017024716 A1 WO 2017024716A1
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WIPO (PCT)
Prior art keywords
touch
display panel
common electrode
electrode
touch control
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PCT/CN2015/098210
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English (en)
French (fr)
Inventor
杨盛际
董学
薛海林
王海生
陈小川
刘英明
许睿
王磊
刘伟
赵卫杰
刘红娟
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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Priority to US15/324,750 priority Critical patent/US10303297B2/en
Publication of WO2017024716A1 publication Critical patent/WO2017024716A1/zh

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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
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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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Definitions

  • Embodiments of the present invention generally relate to the field of display technologies, and in particular, to a touch display panel, a driving method thereof, and a display device.
  • the mainstream display panels mostly adopt the external touch screen structure design method to realize the touch function, that is, the touch screen is attached on the surface of the display screen, so that the display panel including the touch screen and the display screen has a touch function.
  • the structural design of the external touch screen makes the overall structure of the display panel thick, which cannot meet the user's need for thinning and thinning of the display panel.
  • An object of the present invention is to provide a touch display panel, a driving method thereof, and a display device, which are used to make a display panel have a touch function without increasing the thickness of the display panel.
  • a touch display panel includes an upper substrate and a lower substrate disposed opposite to each other, wherein the lower substrate is provided with a plurality of gate lines and a plurality of data lines, and the plurality of gate lines and The plurality of data lines define a plurality of sub-pixel regions, and each of the sub-pixel regions is provided with at least one common electrode block, wherein
  • At least one of the common electrode blocks is reused as a touch driving electrode
  • the touch display panel further includes a touch detection chip, and a touch sensing electrode that is insulated from the touch driving electrode, wherein the touch driving electrode and the touch sensing electrode respectively touch the touch
  • the output end of the detecting chip is electrically connected;
  • the touch detection chip is configured to load on the touch driving electrode during a touch period
  • the touch driving signal is loaded with the touch sensing signal on the touch sensing electrode, and the change of the touch sensing signal on the touch sensing electrode is detected to determine the touch position.
  • the touch display panel includes a touch detection chip, a common electrode block, and a touch sensing electrode, and at least one of the common electrode blocks is used as a touch.
  • the driving electrode, the touch driving electrode and the touch sensing electrode are respectively connected to the output end of the touch detecting chip, and the touch detecting chip is configured to load the touch driving signal onto the touch driving electrode during the touch time period, and touch
  • the touch sensing signal is loaded on the sensing electrode, and the touch position is determined by detecting the change of the touch sensing signal on the touch sensing electrode. Therefore, the display panel can be provided without attaching the touch screen to the surface of the display panel.
  • the touch function does not increase the thickness of the display panel, and is advantageous for realizing the slimness of the display panel.
  • a display device comprising the touch display panel described above.
  • the display device includes the touch display panel described above, the display device has the same beneficial effects as the touch display panel, and the present invention will not be described again.
  • a method for driving the touch display panel described above comprising:
  • the touch detection signal is sequentially applied to the touch driving electrodes by the touch detection chip, and the touch sensing signals are alternately applied to the touch sensing electrodes. Detecting a change in the touch sensing signal on the touch sensing electrode to determine a touch position.
  • the method can achieve the same beneficial effects as the touch display panel, and the present invention will not be described again.
  • FIG. 1 is a cross-sectional view of a touch display panel in accordance with an exemplary embodiment of the present invention
  • FIG. 2 is a plan view of a lower substrate of a touch display panel according to an exemplary embodiment of the present invention
  • FIG. 3 is a cross-sectional view of the lower substrate of the touch display panel taken along line A-A' of FIG. 2, in accordance with an exemplary embodiment of the present invention
  • FIG. 4 is a plan view showing an electrode arrangement on a lower substrate of a touch display panel according to an exemplary embodiment of the present invention
  • FIG. 5 is a plan view showing an electrode arrangement on a lower substrate of a touch display panel according to another exemplary embodiment of the present invention.
  • FIG. 6 is a plan view showing an electrode arrangement on a lower substrate of a touch display panel according to still another exemplary embodiment of the present invention.
  • FIG. 7 is a plan view of an upper substrate of a touch display panel according to an exemplary embodiment of the present invention.
  • FIG. 8 is a schematic diagram showing a positional relationship between a touch driving electrode and a touch sensing electrode in a touch display panel according to an exemplary embodiment of the present invention
  • FIG. 9 is a timing diagram of a method for driving a touch display panel, in accordance with an exemplary embodiment of the present invention.
  • 3-touch detection chip 4-liquid crystal molecular layer; 5-drive electrode lead;
  • the touch display panel includes a lower substrate 1 and an upper substrate 2 disposed opposite to each other.
  • the lower substrate 1 is provided with a plurality of gate lines 11 and a plurality of data lines 12, and the plurality of gate lines 11 and the plurality of data lines 12 define a plurality of sub-pixel regions.
  • a common electrode block 13 serving as a common electrode is disposed in each sub-pixel region, and at least one common electrode block 13 can be reused as the touch driving electrode TX; in other words, the display panel includes a touch driving electrode TX, each touch The control driving electrode TX is formed by at least one common electrode block 13 , that is, the multiplexed common electrode block is used as a common electrode during display of the touch display panel, and is used as a touch during touch of the touch display panel As shown in FIG. 4, the touch display panel further includes a touch detection chip 3, and a touch sensing electrode RX (see FIG.
  • the touch sensing chip 3 is connected to the output end of the touch detection chip 3, and the touch detection chip 3 is configured to load the touch driving signal onto the touch driving electrode TX during the touch time period to the touch sensing electrode. Loading the touch sensing signal on the RX, By touch sensing signal change on the detector RX touch sensing electrodes to determine the touch location.
  • the touch display panel may further include a liquid crystal molecular layer 4 between the oppositely disposed lower substrate 1 and the upper substrate 2 .
  • the common electrode block 13 is divided into or includes a first common electrode block and a second common electrode block, wherein the first common electrode block is reused as the touch driving electrode TX, and the second The common electrode block is not reused as the touch driving electrode TX, and the second common electrode block is used only as the common electrode Vcom.
  • the first common electrode block multiplexed into the touch drive electrode TX is located The area is divided into a plurality of first strip-shaped regions a extending in the row direction, and the region where the second common electrode block is located is divided into a plurality of second strip-shaped regions b extending in the row direction, the first strip-shaped regions a and The two strip-shaped regions b are alternately arranged in the column direction, and each of the first strip-shaped regions a includes a plurality of first common electrode blocks or touch driving electrodes TX sequentially arranged in the row direction, and one column of the touch driving electrodes TX passes through one strip.
  • the driving electrode lead 5 is connected to one output end of the touch detecting chip 3.
  • the lower substrate 1 in the embodiment of the present invention is further provided with a thin film transistor 15 and a pixel electrode 16 located in a sub-pixel region, wherein the pixel electrode 16 is, for example, a slit or a strip electrode.
  • the thin film transistor 15 includes a gate electrode 151, an active layer 152, a source electrode 153 and a drain electrode 154.
  • the gate electrode 151 is electrically connected to the gate line 11
  • the source electrode 153 is electrically connected to the data line 12
  • the drain electrode 154 and the pixel electrode are electrically connected. 16 electrical connections.
  • the display mode of the touch display panel is AFFS (Advanced Fringe Field Switching) mode.
  • a fringe electric field is generated between electrodes in the same plane to make the electrode.
  • the liquid crystal molecules directly between the electrodes and the electrodes can be deflected, so that the brightness and contrast of the touch display panel can be significantly improved, and the touch display panel can have a wider viewing angle, and at the same time, water ripple can be avoided, thereby improving The display effect of the touch display panel.
  • the material of the common electrode block 13 and the pixel electrode 16 is a transparent conductive material such as indium tin oxide.
  • the gate electrode 151 and the gate line 11 are disposed in the same layer and have the same material, and the two can be formed at the same time, thereby simplifying the fabrication process of the lower substrate 1 and reducing the manufacturing cost of the lower substrate 1.
  • the source 153 and the drain 154 are disposed in the same layer as the data line 12 and have the same material, and they may be simultaneously formed to further simplify the fabrication process of the lower substrate 1 and further reduce the fabrication cost of the lower substrate 1.
  • the size of each sub-pixel region is generally designed to be small, and the size of each common electrode block 13 is also small, and in order to make the touch display panel have better touch.
  • the size of the touch driving electrode TX and the touch sensing electrode RX needs to be large to correspond to the size of the touch point touched by the finger on the touch display panel. Therefore, the first common electrode The size of the block does not correspond to the size of the touch driving electrode TX. If a first common electrode block directly functions as a touch driving electrode TX, the touch display panel cannot be simultaneously Higher resolution and resolution, and better touch performance.
  • adjacent plurality of first common electrode blocks are electrically connected to each other to be used as a touch
  • the driving electrode TX is controlled to ensure that the size of the touch driving electrode TX corresponds to the size of the touch point touched by the finger on the display device while the size of each of the first common electrode blocks is small, so that the display device simultaneously Has a higher resolution and resolution, as well as better touch performance.
  • mutual electrical connection between adjacent plurality of first common electrode blocks is realized by: if a plurality of adjacent first common electrode blocks located in the same row are used as one touch drive The electrode TX, as shown in FIG. 5, the plurality of first common electrode blocks 13 in the same row are electrically connected to each other by one wire 6; if a plurality of first common electrode blocks located in at least two adjacent rows are used a touch driving electrode TX, as shown in FIG. 6, a plurality of first common electrode blocks in the same row are electrically connected to each other by one wire 6, and a plurality of first common electrode blocks 13 located in adjacent rows pass through the connection structure.
  • connection structure 7 is electrically connected to each other, and the connection structure 7 is located, for example, at a position where the gate line 11 and the data line 12 on the lower substrate 1 overlap or in a region between the adjacent two rows of the first common electrode blocks, and the touch driving electrode TX passes.
  • the wire 6 is electrically connected to the drive electrode lead 5.
  • the connection structure 7 is disposed in the same layer and the same material as the common electrode block 13. In this case, the connection structure 7 and the common electrode block 13 may have a monolithic structure, and no connection is needed through a via or the like, and both can be simultaneously formed. The simplification of the fabrication process of the lower substrate 1 is simplified.
  • an interlayer insulating layer 14 is disposed between the film layer where the common electrode block 13 is located and the film layer where the gate line 11 is located, so that the gate line 11 and the common electrode block 13 are The distance between the gate lines 11 and the common electrode block 13 is small, and at least one common electrode block 13 is used as the touch driving electrode TX or each touch driving electrode TX is at least A common electrode block 13 is formed. Therefore, the parasitic capacitance formed between the touch driving electrode TX and the gate line 11 is small, thereby improving the sensitivity of the touch display panel, reducing the power consumption of the touch display panel, and improving the touch display. The touch performance of the panel.
  • the wire 6 is disposed in the same layer as the gate line 11 and has the same material. Both can be formed at the same time, thereby simplifying the fabrication process of the lower substrate 1 and reducing the manufacturing cost of the lower substrate 1.
  • the lower substrate 1 is further provided with a plurality of common electrode lines CEL, wherein a part of the common electrode lines serves as the wires 6, since the common electrode lines are parallel to the gate lines 11, and the common electrode lines are under
  • the vertical projection on the substrate 1 is located between the vertical projection of the gate line 11 on the lower substrate 1 and the vertical projection of the common electrode block 13 on the lower substrate 1, so that when the wire 6 is a common electrode line, the arrangement of the wires 6 does not decrease.
  • the aperture ratio of the substrate 1 does not affect the display effect of the touch display panel.
  • the touch detection chip 3 may further have at least a part of the function of the display driving chip for loading the common electrode signal on the first common electrode block through the common electrode line serving as the wire 6 during the display period, thereby improving the The integration of the touch detection chip 3 helps to simplify the structure of the touch display panel.
  • the touch detection chip 3 can further load the common electrode signal to the second common electrode block through other common electrode lines, thereby further improving the integration degree of the touch detection chip 3, and further contributing to simplifying the touch.
  • the structure of the display panel is a part of the function of the display driving chip for loading the common electrode signal on the first common electrode block through the common electrode line serving as the wire 6 during the display period, thereby improving the The integration of the touch detection chip 3 helps to simplify the structure of the touch display panel.
  • the touch detection chip 3 can further load the common electrode signal to the second common electrode block through other common electrode lines, thereby further improving the integration degree of the touch detection chip 3, and further contributing to simplifying the touch.
  • the structure of the display panel is a part of the function of the
  • the first common electrode block and a part of the common electrode line, and the second common electrode block and the other part of the common electrode line are connected as follows: as shown in FIG. 5 and FIG.
  • a first via 141 is disposed on a portion of the insulating layer 14 corresponding to the first common electrode block, and a portion of the common electrode line is connected to the first common electrode block through the first via 141.
  • a second via hole 141' is disposed on a portion of the interlayer insulating layer 14 corresponding to the second common electrode block, and another portion of the common electrode line passes through the second via hole 141'.
  • the other part of the common electrode line is a common electrode line that does not serve as the wire 6.
  • all the first via holes 141 and all the second via holes 141 ′ have the same size, and all the common electrode blocks 13 have the same size, and all the first via holes 141 and the first common electrode block are the same.
  • the relative positional relationship between them is the same, the relative positional relationship between all the second via holes 141' and the second common electrode block is the same, and/or all of the first via holes 141 and the second via holes 141' and all
  • the relative positional relationship between the common electrode blocks 13 is the same, so that the electrical and/or optical performance of each of the common electrode blocks 13 is uniform, so that the display effect of the touch display panel and the uniformity of the touch performance are both uniform. better.
  • connection manner between the first common electrode block and a part of the common electrode line, and the connection manner between the second common electrode block and the other common electrode line may be various, and the embodiment of the present invention Not limited.
  • any two adjacent touch driving electrodes TX and any two adjacent touches are preferred.
  • the distance between the centers of the sensing electrodes RX is 10 mm, so as to match the gap between the two fingers, so that the touch display panel has better touch performance; each touch driving electrode TX and The length of each of the touch sensing electrodes RX in the row direction is 4 mm to 6 mm, and the length of each touch driving electrode TX and each of the touch sensing electrodes RX in the column direction is 4 mm to 6 mm so as to be touched with the finger.
  • the size of the touch points on the touch display panel corresponds to each other, so that the touch display panel has better touch performance; the length and column direction of each touch drive electrode TX and each touch sensing electrode RX in the row direction
  • the ratio of the length of the touch panel is greater than 95%, and both are less than 105%, so that the touch performance of the touch display panel in the row direction and the column direction is consistent, so that the touch performance of the touch display panel has good uniformity.
  • the respective sizes related to the touch driving electrode TX and the touch sensing electrode RX are the regions defined by the touch driving electrode TX and the touch sensing electrode RX or the edge thereof. In terms of.
  • the spacing between the centers of any two adjacent touch driving electrodes TX is the spacing between the centers of two adjacent regions; the length of each touch driving electrode TX in the row direction is the above region.
  • the length in the row direction; the length of each touch driving electrode TX in the column direction is the length of the above region in the column direction.
  • the row direction is a direction parallel to the gate line 11, and the column direction is a direction parallel to the data line 12.
  • the structure of the upper substrate 2 is as follows: as shown in FIG. 1 and FIG. 7, the upper substrate 2 in the embodiment of the present invention is provided with a black matrix 21, and the black matrix 21 is provided with a conductive layer 22, As shown in FIG. 7, the conductive layer 22 is divided into a plurality of mutually independent conductive regions c, each of which serves as a touch sensing electrode RX. In addition, as shown in FIG. 1 and FIG.
  • the upper substrate 2 may further include a color filter layer 23 located between the regions enclosed by the black matrix 21 and covering the black matrix 21, the conductive layer 22, and the color The transparent protective layer 24 above the color filter layer 23, wherein the color filter layer 23 includes a red color filter layer, a green color filter layer, and a blue color filter layer.
  • all the conductive regions c are located at positions corresponding to the second common electrode block, that is, the orthographic projection of each conductive region c on the plane of the surface of one substrate and the corresponding second The orthographic projections of the common electrode blocks on the plane are substantially coincident, wherein the second common electrode block is a common electrode block 13 that is not used as the touch driving electrode TX.
  • the second common electrode block is a common electrode block 13 that is not used as the touch driving electrode TX.
  • the touch display panel includes a touch detection chip, a common electrode block, and a touch sensing electrode, and at least one common electrode block is used as a touch.
  • the driving electrode, the touch driving electrode and the touch sensing electrode are respectively connected to the output end of the touch detecting chip, and the touch detecting chip is configured to load the touch driving signal onto the touch driving electrode during the touch time period, and touch
  • touch The touch sensing signal is loaded on the sensing electrode, and the touch position is detected by detecting the change of the touch sensing signal on the touch sensing electrode. Therefore, the display panel can be provided without attaching the touch screen to the surface of the display panel.
  • the touch function does not increase the thickness of the display panel, and is advantageous for realizing the slimness of the display panel.
  • an embodiment of the present invention further provides a method for driving the touch display panel as described above.
  • the method includes dividing each frame time into a display time period (shown as Display in FIG. 9) and a touch time period (shown as Touch in FIG. 9).
  • the common electrode signal is applied to all common electrode blocks during the display period, and the common electrode signal may be a DC signal by way of example.
  • the vertical scan signal shown as SYNC signal in FIG. 9) is at a high level
  • the first gate line shown as Gate 1 in FIG. 9) to the nth gate line (shown in FIG.
  • the display data signal is applied on the data line (shown as Date Signal in Figure 9).
  • the touch detection signals are sequentially applied to the touch driving electrodes (shown as TX1 to TXN in FIG. 9), and simultaneously touched to the touch sensing electrodes (shown in FIG. 9).
  • the touch sensing signals are alternately applied to the RX1 and the RX2), and the touch position is determined by detecting changes in the touch sensing signals on the touch sensing electrodes.
  • the touch driving signal is a periodic pulse signal
  • the touch sensing signal is also a periodic pulse signal. Because the method is used to drive the above-mentioned touch display panel, the driving method can achieve the same beneficial effects as the touch display panel, which will not be described in detail in the embodiments of the present invention.
  • the embodiment of the present invention further provides a display device, which includes the touch display panel described in any of the above embodiments.
  • the display device includes the touch display panel as described above, and the display device has the same advantageous effects as the touch display panel, which is not described in the embodiment of the present invention.

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Abstract

一种触控显示面板及其驱动方法、包括该触控显示面板的显示装置，涉及显示技术领域，能够在使显示面板具有触控功能的同时，不会增加显示面板的厚度。该触控显示面板包括上基板（2）和下基板（1），下基板（1）上的多条栅线（11）和多条数据线（12）限定出多个子像素区域，每个子像素区域内设置有至少一个公共电极块（13），至少一个所述公共电极块（13）复用作触控驱动电极（TX）；触控显示面板还包括触控侦测芯片（3）和触控感应电极（RX），触控驱动电极（TX）和触控感应电极（RX）分别与触控侦测芯片（3）的输出端电连接；触控侦测芯片（3）被配置成在触控时间段内向触控驱动电极（TX）上加载触控驱动信号，向触控感应电极（RX）上加载触控感应信号，并检测触控感应电极（RX）上的触控感应信号的变化以判断触控显示面板上的触控位置。

Description

触控显示面板及其驱动方法、显示装置 技术领域
本发明的实施例一般地涉及显示技术领域，尤其涉及一种触控显示面板及其驱动方法、显示装置。
背景技术
目前，主流的显示面板大多采用外置触摸屏的结构设计方式实现触控功能，即将触摸屏贴附在显示屏的表面上，以使包括这种触摸屏和显示屏的显示面板具有触控功能。但外置触摸屏的结构设计方式会使显示面板的整体结构厚重，无法满足用户对显示面板的轻薄化需求。
发明内容
本发明的目的在于提供一种触控显示面板及其驱动方法、显示装置，用于在使显示面板具有触控功能的同时，不会增加显示面板的厚度。
根据本发明的一个方面，提供了一种触控显示面板，包括相对设置的上基板和下基板，所述下基板上设置有多条栅线和多条数据线，所述多条栅线和多条数据线限定出多个子像素区域，每个所述子像素区域内设置有至少一个公共电极块，其中，
至少一个所述公共电极块复用作触控驱动电极；
所述触控显示面板还包括触控侦测芯片，以及与所述触控驱动电极相互绝缘设置的触控感应电极，所述触控驱动电极和所述触控感应电极分别与所述触控侦测芯片的输出端电连接；
所述触控侦测芯片被配置成在触控时间段内向所述触控驱动电极上加载 触控驱动信号，向所述触控感应电极上加载触控感应信号，并检测所述触控感应电极上的触控感应信号的变化以判断触控位置。
在本发明所提供的如上所述的触控显示面板中，由于触控显示面板包括触控侦测芯片、公共电极块和触控感应电极，且至少一个所述公共电极块复用作触控驱动电极，触控驱动电极和触控感应电极分别与触控侦测芯片的输出端连接，触控侦测芯片用于在触控时间段内向触控驱动电极上加载触控驱动信号，向触控感应电极上加载触控感应信号，并通过检测触控感应电极上的触控感应信号的变化来判断触控位置，因此，无需在显示面板的表面上贴附触摸屏，即可使显示面板具有触控功能，不会增加显示面板的厚度，有利于实现显示面板的轻薄化。
在本发明的另一个方面中，还提供了一种显示装置，该显示装置包括以上所述的触控显示面板。
由于该显示装置包括以上所述的触控显示面板，因此，该显示装置具有和该触控显示面板相同的有益效果，本发明不再进行赘述。
在本发明的又一个方面中，还提供了一种用于驱动以上所述的触控显示面板的方法，该方法包括：
将每帧时间划分为显示时间段和触控时间段；其中，
在所述显示时间段内，向所有所述公共电极块上施加公共电极信号；
在所述触控时间段内，通过所述触控侦测芯片向所述触控驱动电极上依次施加触控驱动信号，同时，向所述触控感应电极上交替施加触控感应信号，并检测所述触控感应电极上的触控感应信号的变化以判断触控位置。
由于该方法用于驱动以上所述的触控显示面板，因此，该方法能够达到和该触控显示面板相同的有益效果，本发明不再进行赘述。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施 例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为根据本发明的一个示例性实施例的触控显示面板的截面图；
图2为根据本发明的一个示例性实施例的触控显示面板的下基板的平面图；
图3为根据本发明的一个示例性实施例的触控显示面板的下基板的、沿图2的A-A’方向截取的截面图；
图4为示出根据本发明的一个示例性实施例的触控显示面板的下基板上的电极布置的平面图；
图5为示出根据本发明的另一个示例性实施例的触控显示面板的下基板上的电极布置的平面图；
图6为示出根据本发明的又一个示例性实施例的触控显示面板的下基板上的电极布置的平面图；
图7为根据本发明的一个示例性实施例的触控显示面板的上基板的平面图；
图8为示出根据本发明的一个示例性实施例的触控显示面板中的触控驱动电极和触控感应电极之间的位置关系的示意图；以及
图9为根据本发明的一个示例性实施例的用于驱动触控显示面板的方法的时序图。
附图标记说明：
1-下基板；          11-栅线；          12-数据线；
13-公共电极块；     14-层间绝缘层；    141-第一过孔；
141’-第二过孔；    15-薄膜晶体管；    151-栅极；
152-有源层；        153-源极；         154-漏极；
16-像素电极；       2-上基板；         21-黑矩阵；
22-导电层；         23-彩色滤色层；    24-透明保护层；
3-触控侦测芯片；    4-液晶分子层；     5-驱动电极引线；
6-导线；        7-连接结构。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本文中描述的实施例，本领域普通技术人员在没有做出创造性劳动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。
本发明的一个示例性实施例提供了一种触控显示面板，如图1所示，该触控显示面板包括相对设置的下基板1和上基板2。在一个示例中，如图2和图3所示，下基板1上设置有多条栅线11和多条数据线12，多条栅线11和多条数据线12限定出多个子像素区域，每个子像素区域内设置有用作公共电极的一个公共电极块13，至少一个公共电极块13可以复用作触控驱动电极TX；换句话说，该显示面板包括触控驱动电极TX，每个触控驱动电极TX由至少一个公共电极块13构成，即这种复用的公共电极块在该触控显示面板的显示期间用作公共电极，而在该触控显示面板的触控期间用作触控驱动电极；如图4所示，触控显示面板还包括触控侦测芯片3，以及与触控驱动电极TX相互绝缘设置的触控感应电极RX(参见图8)，触控驱动电极TX和触控感应电极RX分别与触控侦测芯片3的输出端连接，触控侦测芯片3用于在触控时间段内向触控驱动电极TX上加载触控驱动信号，向触控感应电极RX上加载触控感应信号，并通过检测触控感应电极RX上的触控感应信号的变化以判断触控位置。此外，如图1所示，该触控显示面板还可以包括位于相对设置的下基板1和上基板2之间的液晶分子层4。
在一个实施例中，如图4所示，公共电极块13分为或包括第一公共电极块和第二公共电极块，其中，第一公共电极块复用作触控驱动电极TX，第二公共电极块未复用作触控驱动电极TX，上述第二公共电极块仅作为公共电极Vcom使用。在一个示例中，复用为触控驱动电极TX的第一公共电极块所在 的区域分为多个沿行方向延伸的第一条形区域a，第二公共电极块所在的区域分为多个沿行方向延伸的第二条形区域b，第一条形区域a与第二条形区域b沿列方向依次交替设置，每个第一条形区域a均包括沿行方向依次排列的多个第一公共电极块或触控驱动电极TX，一列触控驱动电极TX通过一条驱动电极引线5连接至触控侦测芯片3的一个输出端。
示例性地，如图3所示，本发明实施例中的下基板1上还设置有位于子像素区域内的薄膜晶体管15和像素电极16，其中像素电极16例如为狭缝状或者条状电极，薄膜晶体管15包括栅极151、有源层152、源极153和漏极154，其中，栅极151与栅线11电连接，源极153与数据线12电连接，漏极154与像素电极16电连接。此时，上述触控显示面板的显示模式为AFFS(Advanced Fringe Field Switching，超级边缘电场转换)模式，在采用AFFS显示模式的触控显示面板中，通过同一平面内电极间产生边缘电场，使电极间以及电极正上方的液晶分子都能发生偏转，从而能够显著提升触控显示面板的亮度和对比度，并使触控显示面板具有更宽的视角，同时还能避免产生水波纹现象，进而能够提高触控显示面板的显示效果。
在本发明的一个实施例中，公共电极块13和像素电极16的材料为透明导电材料，例如氧化铟锡。栅极151和栅线11同层设置且材料相同，二者可以同时形成，进而简化下基板1的制作工艺，并降低下基板1的制作成本。类似地，源极153和漏极154与数据线12同层设置且材料相同，它们也可以同时形成，以进一步简化下基板1的制作工艺，并进一步降低下基板1的制作成本。
为了提高触控显示面板的分辨率和解析度，通常将每个子像素区域的尺寸设计的较小，每个公共电极块13的尺寸也较小，而为了使触控显示面板具有较好的触控性能，则需要将触控驱动电极TX和触控感应电极RX的尺寸设计的较大，以使其与手指触摸到触控显示面板上的触摸点的尺寸相对应，因此，第一公共电极块的尺寸与触控驱动电极TX的尺寸不对应，若一个第一公共电极块直接作为一个触控驱动电极TX，将必然导致触控显示面板无法同时具有 较高的分辨率和解析度，以及较好的触控性能。为了解决上述问题，根据本发明的一个示例性实施例，优选地，如图2、图3和图5所示，相邻的多个第一公共电极块相互电连接，以复用作一个触控驱动电极TX，进而能够在每个第一公共电极块的尺寸较小的同时，保证触控驱动电极TX的尺寸与手指触摸到显示装置上的触摸点的尺寸相对应，以使得显示装置同时具有较高的分辨率和解析度，以及较好的触控性能。
示意性地，本发明实施例中通过以下方式实现相邻的多个第一公共电极块的相互电连接：若位于同一行中相邻的多个第一公共电极块复用作一个触控驱动电极TX，则如图5所示，位于同一行的多个第一公共电极块13通过一条导线6相互电连接；若位于相邻的至少两行中的多个第一公共电极块复用作一个触控驱动电极TX，则如图6所示，位于同一行的多个第一公共电极块通过一条导线6相互电连接，且位于相邻行的多个第一公共电极块13通过连接结构7相互电连接，连接结构7例如位于下基板1上的栅线11和数据线12交叠的位置处或位于相邻两行第一公共电极块之间的区域内，触控驱动电极TX通过导线6与驱动电极引线5电连接。进一步优选地，连接结构7与公共电极块13同层设置且材料相同，此时，连接结构7与公共电极块13可以为一个整体结构，无需通过过孔等实现连接，且二者可以同时形成，简化了下基板1的制作工艺。
优选地，本发明实施例中，如图3所示，公共电极块13所在膜层与栅线11所在膜层之间设置有层间绝缘层14，从而使得栅线11与公共电极块13之间的距离较大，进而使得栅线11与公共电极块13之间形成的寄生电容较小，由于至少一个公共电极块13复用作触控驱动电极TX或每个触控驱动电极TX由至少一个公共电极块13构成，因此，触控驱动电极TX与栅线11之间形成的寄生电容较小，进而能够提高触控显示面板的灵敏度，降低触控显示面板的功耗，提高触控显示面板的触控性能。
示例性地，本发明实施例中，上述导线6与栅线11同层设置且材料相同， 二者可以同时形成，进而简化下基板1的制作工艺，并降低下基板1的制作成本。
此外，如图5和图6所示，下基板1上还设置有多条公共电极线CEL，其中，一部分公共电极线作为导线6，由于公共电极线与栅线11平行，且公共电极线在下基板1上的垂直投影位于栅线11在下基板1上的垂直投影与公共电极块13在下基板1上的垂直投影之间，因此，导线6为公共电极线时，导线6的设置不会降低下基板1的开口率，不会影响触控显示面板的显示效果。此时，触控侦测芯片3还可以具有显示驱动芯片的至少一部分功能，用于在显示时间段内通过用作导线6的公共电极线向第一公共电极块上加载公共电极信号，提高了触控侦测芯片3的集成度，有助于简化触控显示面板的结构。在另一个示例中，触控侦测芯片3还可以通过其它公共电极线向第二公共电极块加载公共电极信号，从而进一步提高触控侦测芯片3的集成度，进一步有助于简化触控显示面板的结构。
根据本发明的一个实施例，第一公共电极块与一部分公共电极线，以及第二公共电极块与另一部分公共电极线之间的连接方式如下：如图5和图6所示，在层间绝缘层14上与第一公共电极块相对应的部分上设置第一过孔141，一部分公共电极线通过第一过孔141与第一公共电极块连接。类似地，如图5和图6所示，在层间绝缘层14上与第二公共电极块相对应的部分上设置第二过孔141’，另一部分公共电极线通过第二过孔141’与第二公共电极块连接。其中，所述另一部分公共电极线为不作为导线6的公共电极线。
本发明实施例中优选的是，所有第一过孔141和所有第二过孔141’的尺寸均相同，所有公共电极块13的尺寸均相同，所有第一过孔141与第一公共电极块之间的相对位置关系均相同，所有第二过孔141’与第二公共电极块之间的相对位置关系均相同，和/或所有的第一过孔141和第二过孔141’与所有公共电极块13之间的相对位置关系均相同，以使得每个公共电极块13呈现的电学和/或光学性能一致，进而使得触控显示面板的显示效果和触控性能的均一性均 较好。
此外，需要说明的是，第一公共电极块与一部分公共电极线之间连接方式，以及第二公共电极块与另一部分公共电极线之间的连接方式可以有很多种，本发明实施例对此不进行限定。
当相邻的多个第一公共电极块相互连接，以复用作一个触控驱动电极TX时，本发明实施例中优选，任意相邻两个触控驱动电极TX以及任意相邻两个触控感应电极RX的中心之间的间距均为10mm，以使其与两个手指之间的间隙相匹配，进而使触控显示面板具有较好的触控性能；每个触控驱动电极TX以及每个触控感应电极RX在行方向的长度为4mm～6mm，且每个触控驱动电极TX以及每个触控感应电极RX在列方向的长度为4mm～6mm，以使其与手指触摸到触控显示面板上的触摸点的尺寸相对应，进而使触控显示面板具有较好的触控性能；每个触控驱动电极TX以及每个触控感应电极RX在行方向的长度与列方向的长度的比值均大于95％，且均小于105％，以使触控显示面板沿行方向和列方向上的触控性能一致，进而使触控显示面板的触控性能具有很好的均一性。需要说明的是，此处提及的与触控驱动电极TX和触控感应电极RX相关的各个尺寸，均是针对触控驱动电极TX和触控感应电极RX所在区域或其边缘所限定的区域而言的。例如，任意相邻两个触控驱动电极TX的中心之间的间距即为相邻两个上述区域的中心之间的间距；每个触控驱动电极TX在行方向的长度即为上述区域在行方向的长度；每个触控驱动电极TX在列方向的长度即为上述区域在列方向的长度。在一个示例中，上述行方向为平行于栅线11的方向，列方向为平行于数据线12的方向。
在本发明的实施例中，上基板2的结构如下：如图1和图7所示，本发明实施例中的上基板2上设置有黑矩阵21，黑矩阵21上设置有导电层22，如图7所示，导电层22分为多个相互独立的导电区域c，每个导电区域c作为一个触控感应电极RX。此外，如图1和图7所示，上基板2还可以包括位于黑矩阵21围成的区域之间的彩色滤色层23以及覆盖于黑矩阵21、导电层22和彩 色滤色层23上方的透明保护层24，其中，彩色滤色层23包括红色滤色层、绿色滤色层和蓝色滤色层。
进一步地，本发明实施例中优选，所有导电区域c均位于与第二公共电极块相对应的位置上，即每个导电区域c在一个基板的表面所在平面上的正投影与相应的第二公共电极块在该平面上的正投影基本上重合，其中，第二公共电极块为未复用作触控驱动电极TX的公共电极块13，此时，如图8所示，触控驱动电极TX和触控感应电极RX之间在垂直于基板的方向上无交叠，二者之间的耦合电容小，从而使得触控显示面板的触摸灵敏度较高，触控显示面板的触控性能较好。
在本发明实施例所提供的如上所述的触控显示面板中，由于触控显示面板包括触控侦测芯片、公共电极块和触控感应电极，且至少一个公共电极块复用作触控驱动电极，触控驱动电极和触控感应电极分别与触控侦测芯片的输出端连接，触控侦测芯片用于在触控时间段内向触控驱动电极上加载触控驱动信号，向触控感应电极上加载触控感应信号，并通过检测触控感应电极上的触控感应信号的变化以判断触控位置，因此，无需在显示面板的表面上贴附触摸屏，即可使显示面板具有触控功能，不会增加显示面板的厚度，有利于实现显示面板的轻薄化。
进一步地，本发明实施例还提供了一种用于驱动如上所述的触控显示面板的方法。具体地，如图9所示，该方法包括：将每帧时间划分为显示时间段(图9中表示为Display)和触控时间段(图9中表示为Touch)。其中，在显示时间段内，向所有公共电极块上施加公共电极信号，示例性地，该公共电极信号可以为直流信号。同时，在显示时间段内，垂直扫描信号(图9中表示为SYNC signal)处于高电平，第一条栅线(图9中表示为Gate 1)至第n条栅线(图9中表示为Gate n)逐行开启，数据线上施加显示数据信号(图9中表示为Date Signal)。在触控时间段内，通过触控侦测芯片向触控驱动电极(图9中表示为TX1～TXN)上依次施加触控驱动信号，且同时向触控感应电极(图9中表示 为RX1和RX2)上交替施加触控感应信号，并通过检测触控感应电极上的触控感应信号的变化以判断触控位置。示例性地，该触控驱动信号为周期脉冲信号，该触控感应信号也为周期脉冲信号。由于该方法用于驱动以上所述的触控显示面板，因此，该驱动方法能够达到和该触控显示面板相同的有益效果，本发明实施例不再进行赘述。
此外，本发明实施例还提供了一种显示装置，该显示装置包括上述任一实施例中所述的触控显示面板。由于该显示装置包括以上所述的触控显示面板，因此，该显示装置具有与该触控显示面板相同的有益效果，本发明实施例不再进行赘述。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (21)

  1. 一种触控显示面板，包括相对设置的上基板和下基板，所述下基板上设置有多条栅线和多条数据线，所述多条栅线和多条数据线限定出多个子像素区域，其中，每个所述子像素区域内设置有至少一个公共电极块，
    至少一个所述公共电极块复用作触控驱动电极；
    所述触控显示面板还包括触控侦测芯片，以及与所述触控驱动电极相互绝缘设置的触控感应电极，所述触控驱动电极和所述触控感应电极分别与所述触控侦测芯片的输出端电连接；
    所述触控侦测芯片被配置成在触控时间段内向所述触控驱动电极上加载触控驱动信号，向所述触控感应电极上加载触控感应信号，并检测所述触控感应电极上的触控感应信号的变化以判断该触控显示面板上的触控位置。
  2. 根据权利要求1所述的触控显示面板，其中，所述公共电极块分为第一公共电极块和第二公共电极块，其中，所述第一公共电极块复用作所述触控驱动电极，所述第二公共电极块未复用作所述触控驱动电极；所述第一公共电极块所在的区域分为多个沿行方向延伸的第一条形区域，所述第二公共电极块所在的区域分为多个沿行方向延伸的第二条形区域，所述第一条形区域与所述第二条形区域沿列方向依次交替设置，每个所述第一条形区域内均包括沿行方向依次排列的多个所述触控驱动电极，一列所述触控驱动电极通过一条驱动电极引线电连接至所述触控侦测芯片的一个输出端。
  3. 根据权利要求2所述的触控显示面板，其中，相邻的多个所述第一公共电极块相互电连接，以复用作一个所述触控驱动电极。
  4. 根据权利要求3所述的触控显示面板，其中，同一行中相邻的多个所述第一公共电极块通过一条导线相互电连接以复用作一个所述触控驱动电极。
  5. 根据权利要求3所述的触控显示面板，其中，位于相邻的至少两行中的多个所述第一公共电极块复用作一个所述触控驱动电极时，位于所述相邻的 至少两行中的同一行中相邻的多个所述第一公共电极块通过一条导线相互电连接，且位于相邻行中的多个所述第一公共电极块通过连接结构相互电连接，所述触控驱动电极通过所述导线与所述驱动电极引线电连接。
  6. 根据权利要求5所述的触控显示面板，其中，所述连接结构位于所述下基板上的所述栅线和所述数据线交叠的位置处。
  7. 根据权利要求5所述的触控显示面板，其中，所述连接结构与所述公共电极块同层设置且材料相同。
  8. 根据权利要求4～7中任一项所述的触控显示面板，其中，所述公共电极块所在膜层与所述栅线所在膜层之间设置有层间绝缘层。
  9. 根据权利要求8所述的触控显示面板，其中，所述导线与所述栅线同层设置且材料相同。
  10. 根据权利要求9所述的触控显示面板，其中，所述下基板上还设置有多条公共电极线，所述公共电极线与所述栅线同层设置且材料相同，其中，一部分公共电极线作为所述导线，另一部分公共电极线与第二公共电极块电连接，所述触控侦测芯片还配置成在显示时间段内通过所述导线向所述第一公共电极块上加载公共电极信号。
  11. 根据权利要求10所述的触控显示面板，其中，所述层间绝缘层上与所述第一公共电极块相对应的部分上设置有第一过孔，作为所述导线的公共电极线通过所述第一过孔与所述第一公共电极块电连接。
  12. 根据权利要求11所述的触控显示面板，其中，所述层间绝缘层上与所述第二公共电极块相对应的部分上还设置有第二过孔，所述另一部分公共电极线通过所述第二过孔与所述第二公共电极块电连接。
  13. 根据权利要求12所述的触控显示面板，其中，
    所有所述第一过孔和所有所述第二过孔的尺寸均相同，
    所有所述第一过孔与所述第一公共电极块之间的相对位置关系均相同，
    所有所述第二过孔与所述第二公共电极块之间的相对位置关系均相同，和 /或
    所有所述第一过孔和所有所述第二过孔与所述公共电极块之间的相对位置关系均相同。
  14. 根据权利要求3～7中任一项所述的触控显示面板，其中，任意相邻两个所述触控驱动电极之间和/或任意相邻两个所述触控感应电极的中心之间的间距均为10mm。
  15. 根据权利要求3～7中任一项所述的触控显示面板，其中，
    每个所述触控驱动电极和/或每个所述触控感应电极的沿行方向的长度均为4mm～6mm，和/或
    每个所述触控驱动电极和/或每个所述触控感应电极的沿列方向的长度均为4mm～6mm。
  16. 根据权利要求3～7中任一项所述的触控显示面板，其中，每个所述触控驱动电极和/或每个所述触控感应电极的沿行方向的长度与列方向的长度的比值均大于95％，且均小于105％。
  17. 根据权利要求1-7中任一项所述的触控显示面板，其中，还包括设置于所述下基板上所述子像素区域内的薄膜晶体管和像素电极，所述薄膜晶体管包括栅极、有源层、源极和漏极；其中，所述栅极与所述栅线电连接，所述源极与所述数据线电连接，所述漏极与所述像素电极电连接。
  18. 根据权利要求1-7中任一项所述的触控显示面板，其中，所述上基板上设置有黑矩阵，所述黑矩阵上设置有导电层，所述导电层分为多个相互独立的导电区域，每个所述导电区域作为一个所述触控感应电极。
  19. 根据权利要求18所述的触控显示面板，其中，每个所述导电区域均位于在垂直于基板的表面的方向上与未复用作触控驱动电极的至少一个公共电极块重合的位置处。
  20. 一种显示装置，包括如权利要求1～19任一项所述的触控显示面板。
  21. 一种用于驱动如权利要求1～19中任一项所述的触控显示面板的方法， 所述方法包括：
    将每帧时间划分为显示时间段和触控时间段；其中，
    在所述显示时间段内，向所有所述公共电极块上施加公共电极信号；
    在所述触控时间段内，通过所述触控侦测芯片向所述触控驱动电极上依次施加触控驱动信号，同时，向所述触控感应电极上交替施加触控感应信号，并检测所述触控感应电极上的触控感应信号的变化以判断触控位置。
PCT/CN2015/098210 2015-08-13 2015-12-22 触控显示面板及其驱动方法、显示装置 WO2017024716A1 (zh)

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