WO2018214664A1 - 显示装置、触控显示面板及其驱动方法 - Google Patents

显示装置、触控显示面板及其驱动方法 Download PDF

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Publication number
WO2018214664A1
WO2018214664A1 PCT/CN2018/082783 CN2018082783W WO2018214664A1 WO 2018214664 A1 WO2018214664 A1 WO 2018214664A1 CN 2018082783 W CN2018082783 W CN 2018082783W WO 2018214664 A1 WO2018214664 A1 WO 2018214664A1
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layer
touch
transparent conductive
display panel
group
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PCT/CN2018/082783
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English (en)
French (fr)
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王明玺
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京东方科技集团股份有限公司
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Priority to US16/301,763 priority Critical patent/US11360602B2/en
Publication of WO2018214664A1 publication Critical patent/WO2018214664A1/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
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a display device, a touch display panel, and a driving method thereof.
  • touch screen is widely used in various electronic display products as a simple and convenient human-computer interaction method.
  • the touch sensing layer including the touch signal detecting layer Rx and the touch signal scanning layer Tx is integrated on the package layer TFE, thereby reducing the thickness of the product and facilitating the flexibility of the product.
  • the detection accuracy of the touch signal still needs to be further improved.
  • An object of the present disclosure is to provide a touch display panel, a touch display panel driving method, and a display device, thereby at least partially obviating one or more problems due to limitations and disadvantages of the related art.
  • a touch display panel including:
  • Displaying a function layer group for implementing a display function the display function layer group including a first electrode layer;
  • the touch function layer layer includes a touch sensing layer, and the touch sensing layer includes a first touch layer and a second touch layer;
  • the bonding layer group is disposed between the display function layer group and the touch function layer group, and the bonding layer group includes a transparent conductive layer;
  • the transparent conductive layer is configured to reduce a capacitance between the touch function layer group and the first electrode layer during a touch phase.
  • a display device comprising the touch display panel according to any one of the above.
  • a touch display panel driving method for driving the touch display panel according to any one of the above, the touch display panel driving method includes:
  • FIG. 1 is a schematic structural view of a touch display panel according to an exemplary embodiment of the present disclosure
  • FIG. 2 is a schematic structural view of a touch display panel according to another exemplary embodiment of the present disclosure.
  • FIG. 3 is a schematic structural view of a touch display panel according to still another exemplary embodiment of the present disclosure.
  • FIG. 4 schematically illustrates a structural diagram of a touch display panel according to another exemplary embodiment of the present disclosure
  • FIG. 5 schematically illustrates a structural diagram of a touch display panel according to another exemplary embodiment of the present disclosure.
  • spatially relative terms such as “below”, “below”, “lower”, “above”, “upper”, etc., may be used herein to describe a component as shown or The relationship of features to another element or feature (or other element or feature). It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, elements in the “a” or “an” Thus, the exemplary term “below” can encompass the orientation of both “above” and “under”.
  • the device can be additionally positioned (rotated 90 degrees or at other orientations) and the spatial relationship descriptors used herein interpreted accordingly.
  • the touch sensing layer including the touch signal detecting layer Rx and the touch signal scanning layer Tx is integrated on the package layer TFE, thereby reducing the thickness of the product and facilitating the flexibility of the product.
  • the touch sensing layer is close to the cathode under the package layer TFE, and a capacitance is generated between the touch sensing layer and the cathode, and the capacitance may interfere with the touch signal during the touch operation. Therefore, the accuracy of detecting the touch signal by the back end detection IC circuit is affected.
  • a touch display panel is first provided.
  • the touch display panel may include a display function layer group 110 , a touch sensing layer group 120 , and a bonding layer group 130 . among them:
  • the display function layer group 110 is configured to implement a display function, and the display function layer group 110 may include a first electrode layer;
  • the touch function layer group 120 can be configured to implement a touch function, the touch function layer group 120 can include a touch sensing layer, and the touch sensing layer can include a first touch layer and a second touch layer;
  • the bonding layer group 130 is disposed between the display function layer group 110 and the touch function layer group 120, and the bonding layer group 130 includes a transparent conductive layer; wherein the transparent conductive layer For reducing the capacitance between the touch function layer group and the first electrode layer during the touch phase.
  • a transparent conductive layer is disposed between the touch sensing layer and the first electrode layer, and the transparent conductive layer is used to reduce the touch function layer group during the touch phase.
  • the capacitance between the first electrode layer and the first electrode layer can be used as a shielding layer to shield the capacitance generated between the touch sensing layer and the first electrode layer; on the other hand, the transparent conductive layer can form a first electrode layer.
  • the capacitance structure affects the capacitance value of the capacitance structure between the transparent conductive layer and the first electrode layer during the touch operation, which can reduce the interference of the touch detection signal of the touch sensing layer, thereby effectively improving the detection of the touch signal. The accuracy.
  • the first touch layer is the touch signal detection layer Rx and the second touch layer is the touch signal scan layer Tx as an example
  • a touch layer may also be the touch signal scanning layer Tx
  • the second touch layer is the touch signal detecting layer Rx, which is also within the protection scope of the present disclosure.
  • the display function layer group 110 may be an OLED (Organic Light-Emitting Device)-based display function layer group.
  • the display function layer group 110 may include an electron injection layer, an electron transport layer, a light-emitting layer, and a hole transport in addition to the first electrode layer. a layer, a hole injection layer, and a second electrode layer, wherein the second electrode layer may be an anode layer, and the first electrode layer may be a cathode layer.
  • the bonding layer group 130 is disposed between the display function layer group 110 and the touch function layer group 120, and the bonding layer group 130 may include an encapsulation layer TFE and a transparent conductive layer.
  • the encapsulation layer TFE may be disposed on a surface of the transparent conductive layer close to the display function layer group to encapsulate the organic light emitting device OLED.
  • the encapsulation layer TFE may include at least two inorganic thin film layers and an organic thin film layer disposed between the two inorganic thin film layers.
  • the inorganic thin film layer can protect the organic light emitting device OLED from moisture, and the organic thin film layer can protect the organic light emitting device OLED from impurities such as dust particles.
  • the material for forming the transparent conductive layer may include one or more of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), or indium tin zinc oxide (ITZO).
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • ITZO indium tin zinc oxide
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • ITZO indium tin zinc oxide
  • ITZO indium tin zinc oxide
  • the transparent conductive layer 134 may be disposed on a surface of the encapsulation layer 132 away from the first electrode layer 112. As shown in FIG. 2, in the present exemplary embodiment, a transparent conductive layer 134 is formed on the encapsulation layer 132, and then an insulating layer 122 is formed on the transparent conductive layer 134, and then a contact is formed on the insulating layer 122.
  • the touch sensing layer 124 can include a touch signal detecting layer Rx and a touch signal scanning layer Tx. In the touch phase, the voltage V TC of the transparent conductive layer 134 is the same as the voltage V TX of the touch signal scanning layer Tx.
  • the touch signal scanning layer and the transparent conductive layer 134 may be connected by a signal line, and a TFT (Thin Film Transistor) is used to control the writing of the touch scan signal during the touch phase.
  • a transparent conductive layer for example, opening the TFT during the touch phase to write the touch scan signal to the transparent conductive layer through the signal line; or by connecting a signal line to the transparent conductive layer separately, and passing the signal line during the touch phase The same voltage signal as the touch scan signal is written to the transparent conductive layer.
  • the transparent conductive layer 134 serves as a shielding layer and has the same voltage as the touch signal scanning layer during the touch phase. Since the capacitive structure is formed between the transparent conductive layer 134 and the first electrode layer 112, the deformation of the touch display panel caused by the touch operation on the touch display panel affects only the transparent conductive layer 134 and the first electrode layer. The capacitance value of the capacitor structure between the 112 causes the change of the touch detection signal on the transparent conductive layer without affecting the touch detection signal on the scanning layer of the touch signal, thereby effectively improving the accuracy of the touch detection.
  • the voltage V TC of the transparent conductive layer 134 is the same as the voltage V TX of the touch signal scanning layer Tx during the touch phase, between the transparent conductive layer 134 and the touch signal scanning layer Tx There is no potential difference, which is beneficial to reduce the capacitance generated between the touch signal scanning layer Tx and the first electrode layer, thereby reducing the influence of the capacitance generated between the touch sensing layer 124 and the first electrode layer 112 on the detection of the touch signal. Improve the accuracy of touch signal detection.
  • the touch function layer group 120 may further include an insulation layer 122 disposed above the transparent conductive layer 134.
  • the insulating layer 122 may include an inorganic material or an organic material.
  • the inorganic material may include silicon oxide or silicon nitride.
  • the organic material may include one or more of an acrylic resin, a methacrylic resin, a polyisoprene, an ethylene resin, an epoxy resin, a polyurethane resin, a cellulose resin, and an anthracene resin.
  • the touch signal detecting layer 128 and the touch signal scanning layer 124 of the touch sensing layer 120 may be in different layers, and the touch signal detecting layer 128 and the touch An insulating layer 126 is present between the control signal scanning layers 124.
  • the touch signal scanning layer 124 and the transparent conductive layer 134 have the same voltage during the touch phase.
  • a transparent conductive layer 134 is formed on the encapsulation layer 132, and then an insulating layer 122 is formed on the transparent conductive layer 134, and then formed on the insulating layer 122.
  • the touch signal scanning layer 124, the insulating layer 126 and the touch signal detecting layer 128 have the same voltage V TC of the transparent conductive layer 134 and the voltage V TX of the touch signal scanning layer 124.
  • the transparent conductive layer 134 may also be disposed in the encapsulation layer.
  • the encapsulation layer may include the first encapsulation layer 136 and the second encapsulation layer 132, which are transparent.
  • the conductive layer 134 may be disposed between the first encapsulation layer 136 and the second encapsulation layer 132. As shown in FIG.
  • an encapsulation layer that is, a second encapsulation layer 132 is formed on the first electrode layer 112, and then a transparent conductive layer 134 is formed on the second encapsulation layer 132, and then A first encapsulating layer 136 is formed on the transparent conductive layer 134, and then the touch sensing layer 122 is formed on the first encapsulating layer 134.
  • the touch sensing layer 122 may include a touch signal detecting layer Rx and a touch signal scanning layer Tx.
  • the voltage V TC of the transparent conductive layer 134 is the same as the voltage V TX of the touch signal scanning layer Tx.
  • the touch function layer group 120 can also be An insulating layer 122 is disposed, and the insulating layer 122 is disposed on a surface of the first encapsulation layer 136 away from the first electrode layer 112. As shown in FIG. 5, in the present exemplary embodiment, when the transparent conductive layer 134 is disposed in the encapsulation layer, that is, between the first encapsulation layer 136 and the second encapsulation layer 132, the touch function layer group 120 can also be An insulating layer 122 is disposed, and the insulating layer 122 is disposed on a surface of the first encapsulation layer 136 away from the first electrode layer 112. As shown in FIG.
  • an encapsulation layer that is, a second encapsulation layer 132 is formed on the first electrode layer 112, and then a transparent conductive layer 134 is formed on the second encapsulation layer 132, and then A first encapsulation layer 136 is formed on the transparent conductive layer 134, and then an insulating layer 122 is formed on the first encapsulation layer 136.
  • the touch signal scanning layer 124, the insulating layer 126 and the touch signal detection are sequentially formed on the insulating layer 122.
  • the voltage V TC of the layer 128 and the transparent conductive layer 134 is the same as the voltage V TX of the touch signal scanning layer 124.
  • the first electrode layer 112 may be formed of a transparent conductive material or metal according to a type thereof such as a transparent electrode or a reflective electrode.
  • the transparent conductive material may include ITO, ZTO, IZO, ZnOx, SnOx, GIZO, AZO, or the like.
  • the metal may include, for example, Ag, Al, Pt, Au, Cr, W, Mo, Ti, Pd, etc. or an alloy of these materials.
  • the first electrode layer may be obtained by a sputtering process, a chemical vapor deposition (CVD) process, an atomic layer deposition (ALD) process, a vacuum deposition process, a printing process, or the like.
  • a touch display panel driving method is further provided for driving the touch display panel according to the above embodiment.
  • the touch display encoding driving method may include: in a touch phase Applying the same voltage to the transparent conductive layer and the touch sensing layer.
  • the same voltage signal is applied to the transparent conductive layer and the touch sensing layer during the touch phase. Since the transparent conductive layer can form a capacitive structure with the first electrode layer, the touch is The operation only affects the capacitance value of the capacitance structure between the transparent conductive layer and the first electrode layer, and does not interfere with the change of the capacitance value of the touch sensing layer, thereby effectively improving the accuracy of the touch sensing.
  • the voltage signal V TC applied to the transparent conductive layer during the touch phase is the same as the voltage signal V TX of the touch signal scanning layer Tx, there is no transparent conductive layer between the transparent conductive layer and the touch signal scanning layer Tx.
  • the potential difference is beneficial to reduce the capacitance generated between the touch signal scanning layer Tx and the first electrode layer, thereby reducing the influence of the capacitance generated between the touch sensing layer and the first electrode layer on the detection of the touch signal, and improving the touch. Control the accuracy of signal detection.
  • the touch sensing layer may include a touch signal detecting layer and a touch signal scanning layer.
  • the same voltage may be applied to the transparent conductive layer and the touch signal scanning layer during the touch phase.
  • Signals which are also within the scope of the disclosure.
  • the transparent conductive layer acts as a shielding layer and receives the same signal as the touch signal scanning layer during the touch phase. Since the capacitive structure is formed between the transparent conductive layer and the first electrode layer, the deformation of the touch display panel caused by the touch operation on the touch display panel only affects between the transparent conductive layer and the first electrode layer. The capacitance value of the capacitor structure causes a change in the touch detection signal on the transparent conductive layer without affecting the touch detection signal on the scanning layer of the touch signal, thereby effectively improving the accuracy of the touch detection.
  • a display device including the touch display panel according to the above embodiment. Since the display device in the exemplary embodiment adopts the touch display panel described above, it has at least all the advantages corresponding to the touch display panel.
  • the display device may be any product or component having a display function, such as an OLED panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital camera, etc., which is not specifically limited in the present disclosure. .

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
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Abstract

一种触控显示面板及其驱动方法、显示装置。该触控显示面板包括：显示功能层组(110)，用于实现显示功能，该显示功能层组(110)包括第一电极层；触控功能层组(120)，用于实现触控功能，该触控功能层组(120)包括触控感应层，该触控感应层包括第一触控层与第二触控层；以及结合层组(130)，该结合层组(130)设置在显示功能层组(110)与触控功能层组(120)之间，该结合层组(130)包括透明导电层(134)；其中，透明导电层(134)用于在触控阶段降低所述触控功能层组(120)与所述第一电极层之间的电容。该触控显示面板能够屏蔽触控感应层与第一电极层之间产生的电容，从而能够有效提高对触控信号检测的精确度。

Description

显示装置、触控显示面板及其驱动方法 技术领域
本公开涉及显示技术领域，具体而言，涉及一种显示装置、触控显示面板及其驱动方法。
背景技术
随着显示技术的飞速发展，触摸屏作为一种简单便捷的人机交互方式被广泛地应用于各类电子显示产品中。
在现有触控显示实现技术方案中，在封装层TFE上整合包括触控信号检测层Rx与触控信号扫描层Tx的触控感应层，可以降低产品厚度，并便于实现产品的可弯曲性，但是在这种技术方案中，触控信号的检测精确度仍有待进一步提高。
因此，需要提供一种或多种能够解决上述问题的触控显示面板及其驱动方法。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开的目的在于提供一种触控显示面板、触控显示面板驱动方法以及显示装置，进而至少在一定程度上克服由于相关技术的限制和缺陷而导致的一个或者多个问题。
根据本公开的一个方面，提供了一种触控显示面板，包括：
显示功能层组，用于实现显示功能，所述显示功能层组包括第一电极层；
触控功能层组，用于实现触控功能，所述触控功能层组包括触控感应层，所述触控感应层包括第一触控层与第二触控层；以及
结合层组，所述结合层组设置在所述显示功能层组与所述触控功能层组之间，所述结合层组包括透明导电层；
其中，所述透明导电层用于在触控阶段降低所述触控功能层组与所述第一电极层之间的电容。
根据本公开的一个方面，提供一种显示装置，包括根据上述任意一项所述的触控显示面板。
根据本公开的一个方面，提供一种触控显示面板驱动方法，用于驱动根据上述任意一项所述的触控显示面板，所述触控显示面板驱动方法包括：
在触控阶段向所述透明导电层与所述触控感应层的第一触控层或第二触控层施加相同的电压信号。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，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示意性示出了根据本公开一示例性实施例的触控显示面板的结构图；
图2示意性示出了根据本公开另一示例性实施例的触控显示面板的结构图；
图3示意性示出了根据本公开再一示例性实施例的触控显示面板的结构图；
图4示意性示出了根据本公开另一示例性实施例的触控显示面板的结构图；以及
图5示意性示出了根据本公开另一示例性实施例的触控显示面板的结构图。
具体实施方式
现在将参考附图更全面地描述示例实施例。然而，示例实施例能够以多种形式实施，且不应被理解为限于在此阐述的范例；相反，提供这些实施例使得本公开将更加全面和完整，并将示例实施例的构思全面地传达给本领域的技术人员。所描述的特征、结构或特性可以以任何合适的方式结合在一个或更多实施例中。在下面的描述中，提供许多具体细节从而给出对本公开的实施例的充分理解。然而，本领域技术人员将意识到，可以实践本公开的技术方案而省略所述特定细节中的一个或更多，或者可以采用其它的方法、组元、装置、步骤等。在其它情况下，不详细示出或描述公知技术方案以避免使本公开的各方面变得模糊。
为易于描述，诸如“在…下方”、“在…下面”，“下部”、“在…上方”、“上部”等的空间关系术语，在此处可用于描述如图所示的一个元件或特征与另一个元件或特征(或者其它元件或特征)的关系。应当理解，空间关系术语旨在包括使用中或操作中的装置除图中所示的方位之外的不同方位。例如，如果图中的设备被翻转，则被描述为位于其它元件或特征的“下面”或“下方”的元件将位于其它元件或特征的“上方”。因此，示例性术语“在…下面”可包括“在…上方”和“在…下面”两者的方位。可另外对设备进行定位(被旋转90度或在其它的方位)，并且相应地解释在此处使用的空 间关系描述符。
此处所使用的术语仅仅是为了描述具体示例性实施例的目的，而不旨在对本公开的限制。如此处所使用的那样，单数形式“一个”、“所述”及其变体旨在也包含复数形式，除非上下文另外清楚地做出指示。应当进一步理解，术语“包括”和/或“包含”在本申请文件中使用时指定所述的特征、整体、步骤、操作、元件和/或部件的存在，但不排除一个以上的其它特征、整体、步骤、操作、元件、部件和/或它们的组合的存在或增加。
此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。附图中各层的厚度和形状不反映真实比例，仅是为了便于说明本公开的内容。图中相同的附图标记表示相同或类似的部分，因而将省略对它们的重复描述。附图中所示的一些方框图是功能实体，不一定必须与物理或逻辑上独立的实体相对应。可以采用软件形式来实现这些功能实体，或在一个或多个硬件模块或集成电路中实现这些功能实体，或在不同网络和/或处理器装置和/或微控制器装置中实现这些功能实体。
在现有触控显示实现技术方案中，在封装层TFE上整合包括触控信号检测层Rx与触控信号扫描层Tx的触控感应层，可以降低产品厚度，并便于实现产品的可弯曲性，但是在这种技术方案中，触控感应层距离封装层TFE下方的阴极很近，触控感应层与阴极之间会产生电容，在触控操作时该电容会对触控信号产生干扰，从而影响后端检测IC电路对触控信号的检测的精确度。
本示例实施例中，首先提供了一种触控显示面板。参照图1所示，该触控显示面板可以包括：显示功能层组110、触控感应层组120以及结合层组130。其中：
显示功能层组110，用于实现显示功能，所述显示功能层组110可以包括第一电极层；
触控功能层组120，用于实现触控功能，所述触控功能层组120可以包括触控感应层，所述触控感应层可以包括第一触控层与第二触控层；以及
结合层组130，所述结合层组130设置在所述显示功能层组110与所述触控功能层组120之间，所述结合层组130包括透明导电层；其中，所述透明导电层用于在触控阶段接降低所述触控功能层组与所述第一电极层之间的电容。
根据本示例实施例中的触控显示面板，一方面，在触控感应层与第一电极层之间设置透明导电层，所述透明导电层用于在触控阶段接降低触控功能层组与第一电极层之间的电容，能够将透明导电层作为屏蔽层来屏蔽触控感应层与第一电极层之间产生的电容；另一方面，由于透明导电层可以与第一电极层形成电容结构，在触摸操作时会影响透明导电层与第一电极层之间的电容结构的电容值，能够减少对触控感应层的触控检 测信号产生干扰，从而能够有效提高对触控信号检测的精确度。
下面，将对本示例实施例中的触控显示面板进行详细的描述。
在本示例实施中，虽然以第一触控层为触控信号检测层Rx，第二触控层为触控信号扫描层Tx为例进行说明，但是在本公开的一些示例实施例中，第一触控层也可以为触控信号扫描层Tx，并且第二触控层为触控信号检测层Rx，这同样在本公开的保护范围内。
在本示例实施例中，显示功能层组110可以为基于OLED(Organic Light-Emitting Device，有机发光器件)的显示功能层组。在显示功能层组110为基于OLED的显示功能层组的情况下，显示功能层组110除了可以包括第一电极层之外，还可以包括电子注入层、电子传输层、发光层、空穴传输层、空穴注入层以及第二电极层，其中，第二电极层可以为阳极层，第一电极层可以为阴极层。
进一步地，在本示例实施例中，结合层组130设置在显示功能层组110与触控功能层组120之间，结合层组130可以包括封装层TFE和透明导电层。封装层TFE可以设置在透明导电层的靠近显示功能层组的表面以包覆有机发光器件OLED。封装层TFE可以包括至少两个无机薄膜层和设置在两个无机薄膜层之间的有机薄膜层。无机薄膜层可以保护有机发光器件OLED免受湿气影响，有机薄膜层可以保护有机发光器件OLED免受尘埃颗粒等杂质的影响。
在本示例实施例中，制成透明导电层的材料可以包括氧化铟锡(ITO)、氧化铟锌(IZO)、氧化锌(ZnO)或氧化铟锡锌(ITZO)中的一种或多种材料组成，但是本公开的示例实施例中的制成透明导电层的材料不限于此，例如，制成透明导电层的材料还可以包括金属纳米线和石墨烯等材料，这同样在本公开的保护范围内。
接下来，参照图2所示，在本示例实施例中，透明导电层134可以设置在封装层132的远离第一电极层112的表面。如图2所示，在本示例实施例中，在封装层132上形成一层透明导电层134，之后再在透明导电层134上形成一层绝缘层122，再在该绝缘层122上形成触控感应层124，该触控感应层124可以包括触控信号检测层Rx和触控信号扫描层Tx。在触控阶段，透明导电层134的电压V TC与触控信号扫描层Tx的电压V TX相同。
具体而言，在一些实施例中，可以通过一条信号线连接触控信号扫描层和透明导电层134，用一个TFT(Thin Film Transistor，薄膜晶体管)控制在触控阶段将触控扫描信号写入透明导电层，例如在触控阶段打开该TFT通过该信号线将触控扫描信号写入透明导电层；或者还可以通过给透明导电层单独连一根信号线，在触控阶段通过该信号线向透明导电层写入和触控扫描信号相同的电压信号。
在本示例实施例中，透明导电层134作为屏蔽层，在触控阶段与触控信号扫描层的 电压相同。由于透明导电层134与第一电极层112之间形成了电容结构，在对触控显示面板进行触摸操作时带来的触控显示面板的形变，仅会影响透明导电层134与第一电极层112之间的电容结构的电容值，造成透明导电层上的触控检测信号的变化，而不会影响触控信号扫描层上触控检测信号，因此，可以有效提高触控检测的准确性。
进一步地，在本示例实施例中，由于在触控阶段透明导电层134的电压V TC与触控信号扫描层Tx的电压V TX相同，则透明导电层134与触控信号扫描层Tx之间没有电势差，有利于减少触控信号扫描层Tx与第一电极层之间产生的电容，从而能够减小触控感应层124与第一电极层112之间产生的电容对触控信号检测的影响，提高触控信号检测的精确度。
在本示例实施例中，在透明导电层134设置在封装层132远离第一电极层112的表面时，触控功能层组120还可以包括设置在透明导电层134上方的绝缘层122。在本示例实施例中，绝缘层122可以包括无机材料或有机材料。无机材料可以包括氧化硅或氮化硅。有机材料可以包括丙烯酸类树脂、甲基丙烯酸类树脂、聚异戊二烯、乙烯类树脂、环氧类树脂、聚氨酯类树脂、纤维素类树脂和苝类树脂中的一种或多种。
进一步地，参照图3所示，在本示例实施例中，触控感应层120的触控信号检测层128和触控信号扫描层124可以处于不同的层，并且触控信号检测层128与触控信号扫描层124之间存在绝缘层126，在这种情况下，在触控阶段，触控信号扫描层124与透明导电层134在触控阶段的电压相同。如图3所示，在本示例实施例中，在封装层132上形成一层透明导电层134，之后再在透明导电层134上形成一层绝缘层122，再在该绝缘层122上依次形成触控信号扫描层124、绝缘层126以及触控信号检测层128，透明导电层134的电压V TC与触控信号扫描层124的电压V TX相同。
此外，参照图4所示，在本示例实施例中，透明导电层134还可以设置在封装层内，在这种情况下，封装层可以包括第一封装层136和第二封装层132，透明导电层134可以设置在第一封装层136与第二封装层132之间。如图4所示，在本示例实施例中，在第一电极层112上形成一层封装层即第二封装层132，然后在第二封装层132上形成一层透明导电层134，之后再在透明导电层134上形成第一封装层136，然后再在第一封装层134上形成触控感应层122，该触控感应层122可以包括触控信号检测层Rx和触控信号扫描层Tx，透明导电层134的电压V TC与触控信号扫描层Tx的电压V TX相同。
进一步地，参照图5所示，在本示例实施例中，在透明导电层134设置在封装层内即第一封装层136与第二封装层132之间时，触控功能层组120还可以包括绝缘层122，绝缘层122设置在第一封装层136的远离第一电极层112的表面。如图5所示，在本示例实施例中，在第一电极层112上形成一层封装层即第二封装层132，然后在第二封装 层132上形成一层透明导电层134，之后再在透明导电层134上形成第一封装层136，然后再在第一封装层136上形成绝缘层122，在该绝缘层122上依次形成触控信号扫描层124、绝缘层126以及触控信号检测层128，透明导电层134的电压V TC与触控信号扫描层124的电压V TX相同。
需要说明的是，在本示例实施例中，第一电极层112可以根据其类型例如透明电极或反射电极利用透明导电材料或金属形成。透明导电材料可以包括ITO、ZTO、IZO、ZnOx、SnOx、GIZO、AZO等。金属可以包括例如Ag、Al、Pt、Au、Cr、W、Mo、Ti、Pd等或者这些材料的合金。第一电极层可以通过溅射工艺、化学气相沉积(CVD)工艺、原子层沉积(ALD)工艺、真空沉积工艺、印刷工艺等获得。
此外，在本示例实施例中，还提供了一种触控显示面板驱动方法，用于驱动根据上述实施例所述的触控显示面板，该触控显示编码驱动方法可以包括：在触控阶段向所述透明导电层与所述触控感应层施加相同的电压。
根据本示例实施例中的触控显示面板驱动方法，在触控阶段向透明导电层与触控感应层施加相同的电压信号，由于透明导电层可以与第一电极层形成电容结构，因此在触摸操作时仅会影响透明导电层与第一电极层之间的电容结构的电容值，不会对触控感应层的电容值变化产生干扰，从而能够有效提高触控感应的准确性。
在本示例实施例中，由于在触控阶段施加给透明导电层的电压信号V TC与触控信号扫描层Tx的电压信号V TX相同，则透明导电层与触控信号扫描层Tx之间没有电势差，有利于减少触控信号扫描层Tx与第一电极层之间产生的电容，从而能够减小触控感应层与第一电极层之间产生的电容对触控信号检测的影响，提高触控信号检测的精确度。
进一步地，在本示例实施例中，触控感应层可以包括触控信号检测层与触控信号扫描层，此时，可以在触控阶段向透明导电层与触控信号扫描层施加相同的电压信号，这同样属于本公开的保护范围。
在本示例实施例中，透明导电层作为屏蔽层，在触控阶段与触控信号扫描层接收相同的信号。由于透明导电层与第一电极层之间形成了电容结构，在对触控显示面板进行触摸操作时带来的触控显示面板的形变，仅会影响透明导电层与第一电极层之间的电容结构的电容值，造成透明导电层上的触控检测信号的变化，而不会影响触控信号扫描层上触控检测信号，因此，可以有效提高触控检测的准确性。
此外，在本示例实施例中，还提供了一种显示装置，包括根据上述实施例中所述的触控显示面板。由于本示例实施方式中的显示装置采用了上述触控显示面板，因此至少具有与所述触控显示面板相应的全部优点。在本示例实施例中，所述显示装置可以为：OLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相机等任何具有显 示功能的产品或部件，本公开对此不进行特殊限定。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施例。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (10)

  1. 一种触控显示面板，包括：
    显示功能层组，用于实现显示功能，所述显示功能层组包括第一电极层；
    触控功能层组，用于实现触控功能，所述触控功能层组包括触控感应层，所述触控感应层包括第一触控层与第二触控层；以及
    结合层组，所述结合层组设置在所述显示功能层组与所述触控功能层组之间，所述结合层组包括透明导电层，其中，所述透明导电层用于在触控阶段降低所述触控功能层组与所述第一电极层之间的电容。
  2. 根据权利要求1所述的触控显示面板，其中，所述结合层组还包括封装层，所述封装层设置在所述透明导电层的靠近所述显示功能层组的表面。
  3. 根据权利要求2所述的触控显示面板，其中，所述触控功能层组还包括第一绝缘层，所述第一绝缘层设置在所述透明导电层远离所述显示功能层组的表面。
  4. 根据权利要求1所述的触控显示面板，其中，所述结合层组还包括第一封装层和第二封装层，所述第一封装层设置在所述透明导电层的远离所述显示功能层组的表面，所述第二封装层设置在所述透明导电层的靠近所述显示功能层组的表面。
  5. 根据权利要求4所述的触控显示面板，其中，所述触控功能层组还包括第二绝缘层，所述第二绝缘层设置在所述第一封装层的远离所述显示功能层组的表面。
  6. 根据权利要求1所述的触控显示面板，其中，所述第一触控层与所述第二触控层处于同一层。
  7. 根据权利要求1所述的触控显示面板，其中，所述第一触控层与所述第二触控层处于不同的层，并且所述第一触控层与所述第二触控层之间存在第三绝缘层。
  8. 根据权利要求1至7中任一项所述的触控显示面板，其中，所述透明导电层与所述第一触控层或所述第二触控层在所述触控阶段的电压相同。
  9. 一种显示装置，其中，包括根据权利要求1至8中任一项所述的触控显示面板。
  10. 一种触控显示面板驱动方法，用于驱动根据权利要求1至8中任一项所述的触控显示面板，所述触控显示面板驱动方法包括：
    在触控阶段向所述透明导电层与所述触控感应层的第一触控层或第二触控层施加相同的电压信号。
PCT/CN2018/082783 2017-05-26 2018-04-12 显示装置、触控显示面板及其驱动方法 WO2018214664A1 (zh)

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