WO2019041920A1 - 触控显示面板 - Google Patents

触控显示面板 Download PDF

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Publication number
WO2019041920A1
WO2019041920A1 PCT/CN2018/088926 CN2018088926W WO2019041920A1 WO 2019041920 A1 WO2019041920 A1 WO 2019041920A1 CN 2018088926 W CN2018088926 W CN 2018088926W WO 2019041920 A1 WO2019041920 A1 WO 2019041920A1
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WO
WIPO (PCT)
Prior art keywords
display panel
touch display
touch
conductive pattern
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/088926
Other languages
English (en)
French (fr)
Inventor
赵艳艳
徐敬义
唐富强
方业周
王跃林
于亚楠
张绪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Ordos Yuansheng Optoelectronics Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to EP18829715.4A priority Critical patent/EP3678005A4/en
Priority to US16/318,157 priority patent/US20210357081A1/en
Publication of WO2019041920A1 publication Critical patent/WO2019041920A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Definitions

  • the present disclosure relates to the field of touch technology, and more particularly, to a touch display panel.
  • the most popular touch technology is capacitive touch sensing technology, wherein the capacitive touch technology can be divided into self-capacitive technology and mutual capacitive technology.
  • the mutual capacitive touch control technology an ITO conductive layer is plated on the surface of the glass.
  • the self-capacitive touch technology signals are transmitted by the internal circuits of the panel and simultaneously receive signals. In such a case, when the panel is touched by a human hand, the capacitance of the panel itself changes and can be tested.
  • TDDI Touch and Display Driver Integration
  • a touch display panel includes a display area and a non-display area located around the display area.
  • the touch display panel further includes: a touch circuit and a peripheral circuit, the peripheral circuit is located in the non-display area; and a conductive pattern.
  • the conductive pattern is adapted to cooperate with at least a portion of the peripheral circuit to form a capacitance and is electrically insulated from the touch circuit and the peripheral circuit.
  • the orthographic projection of the conductive pattern on the touch display panel and at least a portion of the peripheral circuit are on the touch display panel
  • the orthographic projections coincide.
  • the peripheral circuit includes a driving circuit, wherein the driving circuit is disposed on opposite sides of the touch circuit, and the driving circuit An orthographic projection on the touch display panel falls within an orthographic projection of the conductive pattern on the touch display panel.
  • the driving circuit includes a Gate Driver On Array (GOA) circuit.
  • GOA Gate Driver On Array
  • the conductive pattern includes a strip-shaped conductive pattern, wherein an orthographic projection of the strip-shaped conductive pattern on the touch display panel is located The periphery of the orthographic projection of the touch circuit on the touch display panel.
  • the width of the strip-shaped conductive pattern is in a range of 600 ⁇ m to 700 ⁇ m.
  • the orthographic projection of the conductive pattern on the touch display panel is located on the touch display panel.
  • the periphery of the projection is spaced apart from the orthographic projection of the touch line on the touch display panel.
  • the orthographic projection of the touch control circuit on the touch display panel and the positive conductive pattern on the touch display panel are positive
  • the spacing between projections is not less than 1 ⁇ m.
  • the conductive pattern is grounded.
  • the conductive pattern is made of indium tin oxide (ITO) or metal.
  • the distance between the conductive pattern and the peripheral circuit is between 100 micrometers and 300 micrometers in a direction perpendicular to the touch display panel. In the range.
  • FIG. 1 is a schematic view showing a sensing capacitance inside a touch circuit for a touch display panel according to the related art
  • FIG. 2 is a schematic diagram showing the sensing capacitance generated by the touch circuit of the touch display panel according to the related art according to the related art;
  • FIG. 3 is a schematic circuit diagram showing various sensing capacitors for the touch display panel of FIG. 2;
  • FIG. 4 is a schematic plan view showing a structure of a touch display panel according to an embodiment of the present disclosure, wherein a peripheral circuit is covered by a conductive pattern;
  • FIG. 5 is a schematic view showing a sensing capacitance of a touch display panel according to an embodiment of the present disclosure
  • FIG. 6 schematically shows an equivalent circuit diagram of various sensing capacitances for the touch display panel of FIG.
  • a peripheral circuit is typically provided around the touch circuit (typically located in the pixel region), and a capacitance is generated between the peripheral circuit and the touch circuit. Therefore, during the use process, the peripheral capacitance value of the touch circuit tends to increase, which makes it difficult to control the peripheral capacitance of the touch circuit. For this reason, the product yield of the touch display panel will also be easily lost, and even the touch may fail.
  • embodiments of the present disclosure provide a touch display panel.
  • the touch display panel 100 according to an embodiment of the present disclosure is described in detail below with reference to FIGS.
  • the touch display panel 100 can be used for mobile terminals such as mobile phones and tablet computers, but the present disclosure is by no means limited thereto.
  • the touch display panel includes a display area and a non-display area, wherein the display area is generally located at the center of the entire panel, and the non-display area is a peripheral area surrounding the display area.
  • the touch display panel 100 can also be provided with a touch circuit and a peripheral circuit 2 , wherein the peripheral circuit 2 is disposed, for example, in a peripheral area of the touch display panel 100 , that is, in a non-display area.
  • the touch circuit may include the touch line 5 .
  • FIG. 1 the touch display panel 100 shown in FIG. 1 .
  • a data line 4, a common electrode line 6, and a gate line 7 for displaying functions in the touch display panel 100 are also illustrated, wherein the data lines 4 and the gate lines 7 intersect each other.
  • the pixel area 1 is defined.
  • the touch circuit can receive a touch signal from the outside.
  • the peripheral circuit 2 is disposed in the non-display area, for example, in the pixel area 1 or the touch circuit in FIG.
  • induction capacitors C1, C2, and C3 are formed.
  • the sensing capacitor C1 is formed between the data line 4 and the touch line 5
  • the sensing capacitor C2 is formed between the touch line 5 and the common electrode line 6
  • the sensing capacitor C3 is formed on the touch line 5 and the gate line 7. between.
  • FIG. 2 a schematic diagram of an inductive capacitance generated by a touch circuit for a touch display panel according to a related circuit according to the related art is schematically illustrated.
  • the peripheral circuit 2 is further included.
  • the peripheral capacitance value of the touch circuit will change due to the influence of the peripheral circuit 2.
  • the touch circuit as a whole can generate a capacitance C4 with the peripheral circuit 2.
  • capacitor C4 is in a parallel relationship with the three capacitors C1, C2 and C3 previously described in connection with FIG.
  • FIG. 2 an equivalent circuit diagram of the various induced capacitances generated is schematically shown in FIG.
  • the peripheral edge of the touch control circuit capacitance C C1 + C2 + C3 + C4 . That is, in the touch display panel 100 shown in FIG. 2, the peripheral capacitance C side of the touch circuit will be larger than the capacitance C inside the touch circuit.
  • the distance between the touch circuit and the peripheral circuit 2 is further reduced, thereby causing the capacitance C4 to further increase.
  • a touch display panel is proposed in order to eliminate or at least alleviate the disadvantages of the touch display panel described above in connection with the related art.
  • the touch display panel 100 may include the conductive pattern 3 .
  • the conductive pattern 3 may be adapted to cooperate with at least a portion of the peripheral circuit 2 to form a capacitance.
  • the conductive pattern 3 can also be electrically insulated from the touch circuit and the peripheral circuit 2. In other words, the conductive pattern 3 can form a capacitance with the peripheral circuit 2 and is not electrically connected to the touch circuit and the peripheral circuit 2 in the vicinity of the pixel region 1.
  • the conductive pattern 3 is further disposed on the touch display panel 100, and the conductive pattern 3 is matched with the peripheral circuit 2 to form a capacitor.
  • the conductive pattern 3 is also electrically insulated from the touch circuit and the peripheral circuit 2. In this manner, the peripheral capacitance of the touch circuit can be reduced, thereby reducing the influence of the peripheral circuit 2 around the pixel region on the peripheral capacitance of the pixel region 1.
  • the conductive pattern 3 is added, wherein the conductive pattern 3 is located around the pixel region 1, and is configured to at least partially cover the peripheral circuit.
  • a capacitance C5 is generated between the conductive pattern 3 and the peripheral circuit 2, and the capacitance C5 and other capacitances (for example, capacitances C1, C2, C3, and C4) ) is a tandem relationship. Therefore, by providing the conductive pattern 3 and thereby introducing the capacitor C5, the peripheral capacitance of the touch circuit will change.
  • the conductive pattern 3 can form a capacitance with the peripheral circuit 2, thereby reducing the peripheral capacitance of the touch circuit, and reducing the influence of the peripheral circuit of the pixel region 1 on the peripheral capacitance of the pixel region 1.
  • the touch display panel may include An array of a plurality of pixels or pixel regions integrally constitutes a display area of the entire touch display panel, and the non-display area is located around such a display area, wherein the peripheral circuits are disposed in such non-display areas.
  • the conductive pattern 3 of the present disclosure may be connected to an Ag point (for example, ground).
  • an Ag point for example, ground.
  • ESD Electro-Static Discharge
  • the conductive pattern 3 may be made of metal.
  • it can be made of copper plating, gold plating, or the like.
  • a transparent tin oxide (ITO) material may be used.
  • a form of back-plating ITO (B-ITO) may also be used.
  • the shape, size, and shape of the conductive pattern 3 Optimize the design of the location, etc.
  • the orthographic projection of at least a portion of the peripheral circuit 2 on the entire touch display panel coincides with the orthographic projection of the conductive pattern 3 on the entire touch display panel. That is, when projection is performed in a direction perpendicular to the touch display panel 100, a projection of a portion of the peripheral line 2 may coincide with the conductive pattern 3.
  • the orthographic projection of the peripheral circuit 2 on the touch display panel as a whole coincides with the orthographic projection of the conductive pattern 3 on the touch display panel.
  • the coverage of the conductive pattern 3 may be set to be no larger than the coverage of the peripheral circuit 2. That is to say, the coverage of the conductive pattern 3 is less than or equal to the coverage of the peripheral circuit 2, thereby improving the stability of the touch display panel 100 as a whole.
  • the conductive pattern 3 when projecting in a direction perpendicular to the touch display panel, the conductive pattern 3 will fall within the coverage of the peripheral circuit 2.
  • the conductive pattern 3 may be in the form of a strip, for example, the width may be in the range of 600 ⁇ m to 700 ⁇ m. In this way, the capacitance value of the capacitance formed by the conductive pattern 3 and the peripheral circuit 2 can be limited, and the stability of the touch display panel 100 as a whole can be further improved.
  • the projection is performed in a direction perpendicular to the touch display panel 100, the conductive pattern 3 and the touch circuit may be spaced apart, and the conductive pattern 3 may be located around the touch circuit. Thereby, it is possible to prevent the conductive pattern 3 from forming a capacitance with the pixel region 1, thereby reducing the influence on the overall circuit due to the provision of the conductive pattern 3.
  • the distance between the conductive pattern 3 and the touch control circuit is not less than 1 ⁇ m. Therefore, the influence on the overall circuit stability due to the provision of the conductive pattern 3 can be further reduced.
  • the distance between the conductive pattern 3 and the peripheral circuit 2 may be in the range of 100 micrometers to 300 micrometers in a direction perpendicular to the touch display panel 100. In this way, the capacitance of the conductive pattern 3 and the peripheral circuits can be limited, thereby further reducing the peripheral capacitance of the touch circuit.
  • the conductive pattern 3 and the peripheral circuit 2 can be formed in an annular form surrounding the touch circuit.
  • the peripheral circuit 2 may include a drive circuit.
  • the capacitance generated between the driving circuit and the touch circuit is generally large. Therefore, by providing the conductive pattern, a capacitance can be generated mainly with the driving circuit, thereby eliminating the influence of the capacitance generated between the driving circuit and the touch circuit on the touch display panel.
  • the driving circuits are disposed on opposite sides of the touch circuit. In this way, it is possible to reduce the number of circuits disposed on one side of the touch circuit, thereby improving the stability of the touch display panel and the shape uniformity of the touch display panel (ie, avoiding one side being too wide and the other side being too narrow).
  • the driving circuit can also be disposed on one side of the touch circuit.
  • a conductive pattern can be provided for the driving circuit. That is, the orthographic projection of at least a portion of the driving circuit on the touch display panel coincides with the orthographic projection of the conductive pattern on the touch display panel. In this way, the influence of the driving circuit on the peripheral capacitance of the touch circuit can be well balanced.
  • the driving circuit can be generally disposed on one side or both sides of the touch circuit. Therefore, the conductive pattern can also be provided in a strip form corresponding to the driving circuit.
  • the conductive pattern 3 may be grounded. Thereby, the discharge path is increased. In this manner, electrostatic discharge can be achieved by grounding the conductive pattern 3, and the ESD pass rate can be improved, so that static electricity inside the touch display panel 100 can be quickly dissipated and the antistatic ability can be improved.
  • the drive circuit of the present disclosure may be a GOA circuit.
  • the touch circuit can be easily driven, the stability of the touch display panel can be improved, and the reaction efficiency of the touch display panel can be improved.
  • touch display panel 100 Other configurations and operations for the touch display panel 100 are known to those of ordinary skill in the art in accordance with embodiments of the present disclosure and will not be described in detail herein.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)

Abstract

本公开提出了一种触控显示面板。具体地，所述触控显示面板包括显示区和位于所述显示区周边的非显示区。此外，所述触控显示面板还包括：触控电路和周边电路，所述周边电路位于所述非显示区中；以及导电图案。所述导电图案适配成与所述周边电路的至少一部分配合形成电容，并且与所述触控电路和所述周边电路电绝缘。

Description

触控显示面板
对相关申请的交叉引用
本申请要求2017年8月29日提交的中国专利申请号201710753214.X的优先权，该中国专利申请以其整体通过引用并入本文。
技术领域
本公开涉及触控技术领域，并且更具体地，涉及一种触控显示面板。
背景技术
随着触控技术的发展，越来越多的产品已经开始采用触控技术。目前，最受欢迎的触控技术为电容式触摸传感技术，其中，电容式触控技术又可以分为自容式技术和互容式技术。根据互容式电容触控技术，在玻璃表面上镀有一层ITO导电层。在这样的情况下，当人手触摸玻璃表面时，面板的表面电容将发生改变。根据自容式触控技术，由面板内部电路发射信号，并且同时接受信号。在这样的情况下，当人手触摸面板时，面板本身的电容将发生变化，从而可以被测试出来。
此外，越来越多的电子设备开始将触控功能和显示功能集成在一起，即，形成触控与显示驱动器集成(Touch and Display Driver Integration，TDDI)的产品。然而，对于TDDI产品而言，普遍存在周边电容(Peripheral Capacitance)偏高、面内容均一性差等等情况。由此，在电容值的检查工序中，容易导致容值规格难以管控的问题，从而导致良率流失以及潜在地甚至还有触控失效。
发明内容
根据本公开的实施例，提出了一种触控显示面板。具体地，所述触控显示面板包括显示区和位于所述显示区周边的非显示区。此外，所述触控显示面板还包括：触控电路和周边电路，所述周边电路位于所述非显示区中；以及导电图案。所述导电图案适配成与所述周边电路的至少一部分配合形成电容，并且与所述触控电路和所述周边电路电绝缘。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述导电图案在所述触控显示面板上的正投影与所述周边电路的至少一部分在所述触控显示面板上的正投影重合。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述周边电路包括驱动电路，其中，所述驱动电路布置于所述触控电路的相对两侧，并且所述驱动电路在所述触控显示面板上的正投影落入所述导电图案在所述触控显示面板上的正投影内。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述驱动电路包括阵列基板行驱动(Gate Driver On Array，GOA)电路。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述导电图案包括条状导电图案，其中，所述条状导电图案在所述触控显示面板上的正投影位于所述触控电路在所述触控显示面板上的正投影的周边。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述条状导电图案的宽度在600μm到700μm的范围内。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述导电图案在所述触控显示面板上的正投影位于所述触控电路在所述触控显示面板上的正投影的周边并与所述触控线路在所述触控显示面板上的正投影间隔开。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述触控电路在所述触控显示面板上的正投影与所述导电图案在所述触控显示面板上的正投影之间的间距不小于1μm。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述导电图案接地。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，所述导电图案由氧化铟锡(ITO)或金属制成。
根据具体实现方式，在本公开的实施例提供的触控显示面板中，在垂直于所述触控显示面板的方向上，所述导电图案与所述周边电路之间的间距在100微米到300μm的范围内。
本公开的附加方面和优点将在下面的描述中部分地给出或者将从下面的描述中部分地变得明显，或者通过本公开的实践而了解到。
附图说明
本公开的上述和/或附加的方面和优点将从结合下面附图对实施例的描述中变得明显和容易理解，其中：
图1示意性示出了根据相关技术的用于触控显示面板的触控电路内部的感应电容的示意图；
图2示意性示出了根据相关技术的用于触控显示面板的触控电路受周边电路的影响而产生的感应电容的示意图；
图3示意性示出了针对图2中的触控显示面板的各种感应电容的等效电路图；
图4示意性示出了根据本公开的实施例的触控显示面板的结构的俯视示意图，其中，周边电路被导电图案覆盖；
图5示意性示出了根据本公开的实施例的触控显示面板的感应电容的示意图；以及
图6示意性示出了针对图5中的触控显示面板的各种感应电容的等效电路图。
具体实施方式
下面将详细描述本公开的实施例。需要指出的是，所述实施例仅以示例的方式在附图中示出，其中，自始至终利用相同或类似的附图标记来表示相同或类似的元件或者具有相同或类似功能的元件。还需要说明的是，下面通过参考附图所描述的实施例是示例性的，其目的仅是用于解释本公开，而不能理解为对本公开的任何限制。
在附图以及相关描述中，分别采用以下附图标记来指代相关组件：100触控显示面板；1像素区；2周边电路；3导电图案；4数据线；5触控线；6公共电极线；以及7栅线。
在触控显示面板中，典型地，在触控电路(典型地，位于像素区中)的周边设有周边电路，而且周边电路与触控电路之间会产生电容。因此，在使用过程期间，触控电路的周边电容值往往会增大，从而导致难以对触控电路的周边电容进行管控。出于这样的原因，触控显示面板的产品良率也将容易流失，并且甚至，还有可能导致触控失效。为此目的，本公开的实施例提供了一种触控显示面板。
下面参考图1-图6来详细地描述根据本公开的实施例的触控显示面板100。作为示例，该触控显示面板100可以用于手机、平板电脑等移动终端，但是本公开绝不限于此。
通常，触控显示面板包括显示区和非显示区，其中，显示区一般位于整个面板的中心，而非显示区是围绕显示区的周边区域。进一步地，如图1所示，触控显示面板100还可以提供有触控电路和周边电路2，其中，周边电路2例如设置在触控显示面板100的周边区域，即，非显示区中。具体地，在图1示出的触控显示面板100中，触控电路可以包括触控线5。此外，在图1中，还示出了在触控显示面板100中用于显示功能的数据线4、公共电极线6和栅线7，其中，通过数据线4和栅线7的彼此相交而限定像素区1。一般地，触控电路可以从外部接收触控信号。此外，周边电路2设置在非显示区中，例如，在图1中处于像素区1或触控电路的周围。在这样的触控显示面板100的内部，将形成感应电容C1、C2、C3。具体地，感应电容C1形成在数据线4与触控线5之间，感应电容C2形成在触控线5与公共电极线6之间，并且感应电容C3形成在触控线5与栅线7之间。本领域技术人员应当清楚的是，这三个电容C1、C2、C3为并联的关系，并且组合成触控显示面板100内的总电容C内＝C1+C2+C3。
参照图2，示意性示出了根据相关技术的用于触控显示面板的触控电路受周边电路的影响而产生的感应电容的示意图。具体地，除以上结合图1所描述的各个组件(诸如，像素区1、数据线4、触控线5、公共电极线6、栅线7、电容C1、电容C2和电容C3)之外，在图2所示的触控显示面板100中，还包括周边电路2。在这样的情况下，由于受到周边电路2的影响，触控电路的周边电容值将发生改变。具体地，触控电路作为整体可以与周边电路2产生电容C4。本领域技术人员应当清楚的是，电容C4与前面结合图1所述的三个电容C1、C2和C3均构成并联关系。针对图2中示出的触控显示面板100，在图3中示意性地示出了所产生的各种感应电容的等效电路图。由此可见，对于如图2所示的触控显示面板100，触控电路的周边电容C 边＝C1+C2+C3+C4。也就是说，在如图2所示的触控显示面板100中，触控电路的周边电容C 边将大于触控电路内部的电容C 内。此外，考虑到触控显示面板100逐渐向小型化的发展，触控电路与周边电路2之间 的间距将进一步缩小，从而导致电容C4进一步增大。
鉴于以上所述，在本公开的实施例中，提出了一种触控显示面板，以便消除或者至少缓解以上结合相关技术所描述的触控显示面板的缺点。
具体地，触控显示面板100可以包括导电图案3。进一步地，导电图案3可以适配为与周边电路2的至少一部分配合形成电容。此外，导电图案3还可以与触控电路以及周边电路2电绝缘。换言之，导电图案3可以与周边电路2形成电容，并且与像素区1附近的触控电路和周边电路2不导通。
根据本公开的实施例所提供的触控显示面板100，在触控显示面板100上进一步设置导电图案3，并且使导电图案3与周边电路2配合形成电容。此外，还将导电图案3与触控电路以及周边电路2电绝缘设置。以这样的方式，可以降低触控电路的周边电容，从而降低由于像素区周围的周边电路2对像素区1的周边容值的影响。
接下来，将参照图4-6更加详细地解释如何使用由本公开的实施例提供的触控显示面板来降低触控电路的周边电容。
根据本公开的实施例，如图4所示，增加了导电图案3，其中，该导电图案3位于像素区1的四周，并且配置成至少部分地覆盖周边电路。进一步地，结合图5以及示出等效电路图的图6所示，导电图案3与周边电路2之间会产生电容C5，并且该电容C5与其它电容(例如，电容C1、C2、C3和C4)为串联的关系。因此，通过设置导电图案3并且由此引入电容C5，触控电路的周边电容将会改变。具体地，改变后的周边电容C 边’按照如下方式计算：1/C 边’＝1/(C1+C2+C3+C4)+1/C5。由此可见，在增加导电图案3之后，触控电路的周边电容C 边’＝(C1+C2+C3+C4)×C5/(C1+C2+C3+C4+C5)。可以看出，通过增加导电图案3，触控电路的周边容值将减小，从而有助于改善触控电路的触控效果。
鉴于以上所述，导电图案3可以与周边电路2形成电容，从而降低触控电路的周边容值，并且降低像素区1的周边电路对像素区1的周边容值的影响。
此处，需要说明的是，虽然在以上例如图4-5中仅示出了一个像素区1，但是本领域技术人员应当容易领会到，在本公开的实施例中，触 控显示面板可以包括多个像素或像素区的阵列，其整体构成整个触控显示面板的显示区，并且非显示区位于这样的显示区的四周，其中，周边电路就设置在这样的非显示区中。
另外，本公开的导电图案3可以连接Ag点(例如接地)。通过这样的方式，在触控显示面板100内部产生的静电将可以通过导电图案3传递到Ag点，并且传导出去。由此，可以通过导电图案3实现静电放电(Electro-Static Discharge，ESD)，从而提升ESD通过率，使得触控显示面板100内部的静电快速散失。
可选地，在本公开的实施例中，导电图案3可以由金属制成。例如，可以使用镀铜、镀金等等制成。同样地，为了促进触控显示面板100的显示效果，也可以采用透明的二氧化锡(ITO)材料而制成。进一步可选地，还可以采用背镀ITO(Back-plating ITO，B-ITO)的形式。
另外，为了在触控电路的周边形成比较稳定的电容，以及避免所增加的导电图案3对触控电路或其它电路的影响，在本公开的实施例中，对导电图案3的形状、尺寸、位置等进行优化设计。
例如，在本公开的实施例中，周边电路2的至少一部分在整个触控显示面板上的正投影与导电图案3在整个触控显示面板上的正投影重合。也就是说，在垂直于触控显示面板100的方向上进行投影时，周边线路2的一部分的投影可以与导电图案3重合。可替换地，周边电路2整体在触控显示面板上的正投影与导电图案3在触控显示面板上的正投影重合。由此，可以使像素区1的周边电路与导电图案3形成稳定的电容，从而降低像素区1的周边容值。
为了避免导电图案3与其他电路产生电容，导电图案3的覆盖范围可以设置为不大于周边电路2的覆盖范围。也就是说，导电图案3的覆盖范围小于等于周边电路2的覆盖范围，从而提高触控显示面板100整体的稳定性。
换句话说，在垂直于触控显示面板的方向上进行投影时，导电图案3将落入到周边电路2的覆盖范围内。
可选地，导电图案3可以呈条状，例如，宽度可以在600μm到700μm的范围内。这样，可以限定导电图案3与周边电路2所形成的电容的容值大小，进而可以使得触控显示面板100整体的稳定性进一步提高。
在一些实施例中，在垂直于触控显示面板100的方向上进行投影，导电图案3与触控电路可以间隔开，并且导电图案3可以位于触控电路的周围。由此，可以避免导电图案3与像素区1形成电容，从而降低由于设置导电图案3而对整体电路的影响。
可选地，在垂直于触控显示面板100的方向上进行投影时，导电图案3与触控电路之间的间距不小于1μm。由此，可以进一步降低由于设置导电图案3而对整体电路稳定性的影响。
可选地，在垂直于触控显示面板100的方向上，导电图案3与周边电路2的间距可以在100微米到300μm的范围内。以这样的方式，可以限制导电图案3与周边电路的电容，从而进一步降低触控电路的周边容值。
如图4所示，在垂直于触控显示面板100的方向上进行投影，导电图案3和周边电路2均可以形成为环绕触控电路的环形形式。
另外，周边电路2可以包括驱动电路。在触控显示面板的使用过程中，驱动电路与触控电路之间产生的电容值一般比较大。因此，通过设置导电图案，可以主要与驱动电路产生电容，从而消除在驱动电路与触控电路之间产生的电容对触控显示面板的影响。具体而言，本申请中，驱动电路布置于触控电路的相对两侧。这样，可以减小在触控电路的单边设置过多的电路，从而提高触控显示面板的稳定性以及触控显示面板的形状均一性(即，避免一边过宽而另一边过窄)。当然，驱动电路也可以设置于触控电路的一侧。
为了平衡电容，可以针对驱动电路设置导电图案。也就是说，驱动电路的至少一部分在触控显示面板上的正投影与导电图案在触控显示面板上的正投影重合。这样，可以很好地平衡驱动电路对触控电路的周边电容的影响。
作为示例，驱动电路一般可以设置在触控电路的单侧或两侧。因此，导电图案也可以设置为与驱动电路对应的条状形式。
根据本公开的一些实施例，导电图案3可以接地。由此，增加了放电路径。以这样的方式，可以通过导电图案3接地来实现静电放电，并且提高ESD通过率，从而使得触控显示面板100内部的静电可以快速散失并且提升抗静电能力。
另外，本公开的驱动电路可以为GOA电路。以这样的方式，可以 便于驱动触控电路，提高触控显示面板的稳定性，而且还可以提高触控显示面板的反应效率。
根据本公开的实施例，用于触控显示面板100的其他构成以及操作对于本领域普通技术人员而言都是已知的，并且在这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本公开的实施例，但是本领域的普通技术人员可以理解到，在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型。本公开的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种触控显示面板，包括显示区和位于所述显示区周边的非显示区，其中，所述触控显示面板还包括：
    触控电路和周边电路，所述周边电路位于所述非显示区中，以及
    导电图案，其中
    所述导电图案适配成与所述周边电路的至少一部分配合形成电容，并且与所述触控电路和所述周边电路电绝缘。
  2. 根据权利要求1所述的触控显示面板，其中
    所述导电图案在所述触控显示面板上的正投影与所述周边电路的至少一部分在所述触控显示面板上的正投影重合。
  3. 根据权利要求2所述的触控显示面板，其中
    所述周边电路包括驱动电路，其中，所述驱动电路布置于所述触控电路的相对两侧，并且所述驱动电路在所述触控显示面板上的正投影落入所述导电图案在所述触控显示面板上的正投影内。
  4. 根据权利要求3所述的触控显示面板，其中
    所述驱动电路包括阵列基板行驱动(Gate Driver On Array，GOA)电路。
  5. 根据权利要求1-4中任一项所述的触控显示面板，其中
    所述导电图案包括条状导电图案，所述条状导电图案在所述触控显示面板上的正投影位于所述触控电路在所述触控显示面板上的正投影的周边。
  6. 根据权利要求5所述的触控显示面板，其中
    所述条状导电图案的宽度在600μm到700μm的范围内。
  7. 根据权利要求1所述的触控显示面板，其中
    所述导电图案在所述触控显示面板上的正投影位于所述触控电路在所述触控显示面板上的正投影的周边并与所述触控线路在所述触控显示面板上的正投影间隔开。
  8. 根据权利要求7所述的触控显示面板，其中
    所述触控电路在所述触控显示面板上的正投影与所述导电图案在所述触控显示面板上的正投影之间的间距不小于1μm。
  9. 根据权利要求1所述的触控显示面板，其中
    所述导电图案接地。
  10. 根据权利要求1所述的触控显示面板，其中
    所述导电图案由氧化铟锡(ITO)或金属制成。
  11. 根据权利要求1所述的触控显示面板，其中
    在垂直于所述触控显示面板的方向上，所述导电图案与所述周边电路之间的间距在100微米到300μm的范围内。
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