WO2018099069A1 - 触摸显示屏、显示装置和触摸面板 - Google Patents

触摸显示屏、显示装置和触摸面板 Download PDF

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Publication number
WO2018099069A1
WO2018099069A1 PCT/CN2017/091110 CN2017091110W WO2018099069A1 WO 2018099069 A1 WO2018099069 A1 WO 2018099069A1 CN 2017091110 W CN2017091110 W CN 2017091110W WO 2018099069 A1 WO2018099069 A1 WO 2018099069A1
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WO
WIPO (PCT)
Prior art keywords
substrate
touch
shielding layer
display screen
orthographic projection
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Application number
PCT/CN2017/091110
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English (en)
French (fr)
Inventor
张洁
Original Assignee
京东方科技集团股份有限公司
鄂尔多斯市源盛光电有限责任公司
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.)
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Application filed by 京东方科技集团股份有限公司, 鄂尔多斯市源盛光电有限责任公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/750,643 priority Critical patent/US10768753B2/en
Priority to EP17835790.1A priority patent/EP3550413A4/en
Priority to JP2018506388A priority patent/JP7007258B2/ja
Publication of WO2018099069A1 publication Critical patent/WO2018099069A1/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
    • G06F3/044—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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04107—Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds

Definitions

  • Embodiments of the present disclosure relate to a touch display screen, a display device, and a touch panel.
  • the projected capacitive touch display has the advantages of high penetration, durability, waterproof and dustproof. Therefore, the projected capacitive touch display is widely used in public information inquiry and leading office. , industrial control, military command, video games and other fields.
  • the projected capacitive touch display can be divided into two types: self-capacitive screen and mutual capacitance screen.
  • the touch electrodes in the self-capacitive screen are usually arranged in rows and columns.
  • the scan lines and columns are used to determine the touch position of the finger according to the measured capacitance.
  • the sensing electrodes are crossed with the driving electrodes (for example, vertical). Setting), one row (or one column) of the sensing electrodes cooperates with a column (or a row) of the driving electrodes to obtain a capacitance at the intersection of the two, thereby determining the touch position.
  • the touch of the self-capacitance screen is easily affected by the uniformity of the capacitance value.
  • Embodiments of the present disclosure provide a touch display screen, a display device, and a touch panel, and embodiments of the present disclosure can improve the uniformity of capacitance of the self-capacitive screen.
  • At least one embodiment of the present disclosure provides a touch display screen including a plurality of block-shaped touch electrodes disposed at intervals, and further comprising a conductive shielding layer, the shielding layer being insulated from the touch electrodes;
  • the orthographic projection of the shielding layer on the substrate in the touch display screen is at least located in an orthographic projection of the touch electrode on the substrate.
  • the material of the shielding layer is a transparent conductive material.
  • the material of the shielding layer is an opaque conductive material; the touch display screen further includes a black matrix; an orthographic projection of the shielding layer on the substrate substrate and the black matrix on the substrate The orthographic projections overlap.
  • the touch display screen includes an array substrate and a counter substrate; the touch electrodes are disposed on the array substrate or the pair of cassette substrates.
  • the shielding layer is disposed on a side of the pair of card substrates away from the array substrate; an orthographic projection of the entire shielding layer on the substrate is located on the substrate on the touch substrate The space of the orthographic projection.
  • the shielding layer is disposed on a side of the array substrate away from the pair of the substrate; the orthographic projection of the entire shielding layer on the substrate is located on the substrate The gap of the orthographic projection; or, the shielding layer is laid flat.
  • the shielding layer is disposed in the array substrate; an orthographic projection of the entire shielding layer on the substrate substrate is located in an orthographic projection of the touch electrode on the substrate.
  • the shielding layer is disposed in the pair of substrate; an orthographic projection of the entire shielding layer on the substrate is located in an orthographic projection of the touch electrode on the substrate.
  • the touch electrode is a self-capacitance electrode.
  • the orthographic projection of the shielding layer partially overlaps with the orthographic projection of the touch electrode.
  • the overlapping width of the orthographic projection of the shielding layer and the orthographic projection of the touch electrode is less than 50 micrometers.
  • At least one embodiment of the present disclosure provides a display device comprising the touch display screen of any of the above, and a circuit board; a shielding layer is connected to a control circuit on the circuit board; The method is configured to: in the display phase, control the shielding layer to be grounded; in the touch phase, apply a control signal to the shielding layer to shield the interference signal except the touch signal.
  • control circuit applies the same control signal to the shielding layer as the touch signal.
  • At least one embodiment of the present disclosure provides a touch panel including: a substrate; a plurality of block-shaped touch electrodes spaced apart on the substrate; wherein the touch electrodes are self-capacitance electrodes; And a conductive shielding layer on the substrate.
  • the shielding layer is insulated from the touch electrode, and the orthographic projection of the shielding layer on the substrate substrate is at least a gap between the orthographic projections of the touch electrodes on the substrate.
  • FIG. 1 is a top plan view 1 of a touch display screen according to an embodiment of the present disclosure
  • FIG. 2 is a schematic top view of a touch display screen according to an embodiment of the present disclosure
  • FIG. 3 is a cross-sectional view 1 of a touch display screen according to an embodiment of the present disclosure
  • FIG. 4 is a cross-sectional view 2 of a touch display screen according to an embodiment of the present disclosure
  • FIG. 5 is a cross-sectional view 3 of a touch display screen according to an embodiment of the present disclosure.
  • FIG. 6 is a cross-sectional view of a touch display screen according to an embodiment of the present disclosure.
  • FIG. 7( a ) is a cross-sectional view of a touch display screen according to an embodiment of the present disclosure
  • FIG. 7(b) is a cross-sectional view of a touch display screen according to an embodiment of the present disclosure.
  • FIG. 8 is a cross-sectional view of a touch display screen according to an embodiment of the present disclosure.
  • FIG. 9 is a cross-sectional view of a touch display screen according to an embodiment of the present disclosure.
  • FIG. 10 is a cross-sectional view IX of a touch display screen according to an embodiment of the present disclosure
  • FIG. 11 is a cross-sectional view of a touch display screen according to an embodiment of the present disclosure.
  • FIG. 12 is a cross-sectional view of a display device according to an embodiment of the present disclosure.
  • FIG. 13A is a cross-sectional schematic view of a touch panel according to an embodiment of the present disclosure.
  • FIG. 13B is a cross-sectional view 2 of a touch panel according to an embodiment of the present disclosure.
  • the touch display screen includes a plurality of block-shaped touch electrodes 10 disposed at intervals, and further includes a conductive shielding layer 20 , and the shielding layer 20 and the touch layer
  • the control electrode 10 is insulated; the orthographic projection of the shielding layer 20 on the substrate substrate 90 in the touch display screen is at least a gap between the orthographic projections of the touch electrode 10 on the substrate substrate 90.
  • the planar shape (ie, the planar shape) of the conductive shielding layer 20 is a mesh shape.
  • the relative position of the shielding layer 20 and the touch electrode 10 in the direction perpendicular to the bearing surface of the base substrate 90 is not limited, and the shielding layer 20 may be located above or below the touch electrode 10 .
  • the shielding layer 20 can also be disposed in the same layer as the touch electrode 10.
  • the touch display screen includes a display panel, and the display panel includes at least one base substrate.
  • the display panel includes at least one base substrate.
  • only one base substrate may be selected as the reference substrate of the orthographic projection of the touch electrode 10 and the shield layer 20, that is, the above-mentioned base substrate 90.
  • the underlying substrate may be, for example, any type of transparent substrate such as a glass substrate, a plastic substrate, or a quartz substrate.
  • the touch display screen determines the touch position by the capacitance between the touch object (for example, a finger) and the touch electrode 10 (that is, the touch electrode 10 is a self-capacitance electrode)
  • the shielding layer 20 is located above the touch electrode 10, that is, in the case where the touch electrode 10 is located between the shielding layer 20 and the substrate substrate 90 in a direction perpendicular to the substrate substrate 90, that is, in the shielding
  • the shielding layer 20 is The orthographic projection on the base substrate is at least a gap between the orthographic projections of the touch electrodes 10 on the substrate substrate 90.
  • the shielding layer 20 does not affect the recognition of the touch position by the touch electrode 10 even if it overlaps with the entire touch electrode 10. Therefore, the shielding layer 20 is in the
  • the orthographic projection on the substrate substrate 90 may cover at least a part of the touch electrodes 10 except for the gap between the orthographic projections of the touch electrodes 10 on the substrate substrate 90, that is, the shielding layer 20 is on the substrate.
  • the orthographic projection on the substrate 90 is at least located on the orthographic projection of the touch electrode 10 on the substrate substrate 90. The gap.
  • the orthographic projection of the shield layer 20 on the base substrate 90 may not overlap with the touch electrode 10; for example, as shown in FIG. 2, the shielding layer 20 may also partially overlap the touch electrode 10, in this case, based on the width of the shielding layer 20 and in order not to affect the touch.
  • the width w of the overlap of the two is, for example, less than 50 ⁇ m.
  • the shielding layer 20 may not overlap with the touch electrode 10.
  • the embodiment of the present disclosure provides a touch display screen, by providing a shielding layer 20 in the touch display screen, and making the shielding layer 20 in the touch display screen in the base substrate 90 according to the position of the shielding layer 20 relative to the touch electrode 10;
  • the upper orthographic projection is at least located between the orthographic projections of the touch electrodes 10 on the substrate substrate 90, and the influence of the shielding layer 20 on the touch function can be avoided.
  • the shield layer 20 is configured to be applied with a signal during the touch phase (eg, the signal is the same as the signal applied to the touch electrode 10) and grounded during the display phase.
  • the shielding layer 20 can shield the internal signal interference caused by the circuit traces on the array substrate of the display panel, the touch display structure, or the like, or shield external signal interference. It can improve the uniformity of the capacitance of the touch display and improve the touch precision. On this basis, by controlling the grounding of the shielding layer 20 during the display phase, the antistatic capability of the touch display screen can also be improved.
  • the material of the shielding layer 20 is a transparent conductive material. In this way, it is not necessary to consider whether the shielding layer 20 blocks the light for display displayed by the touch display screen, and thus does not affect the aperture ratio.
  • the transparent conductive material may be, for example, a transparent conductive metal oxide such as indium tin oxide (ITO) or indium tin oxide (IZO).
  • ITO indium tin oxide
  • IZO indium tin oxide
  • the material of the shielding layer 20 is an opaque conductive material; in this case, as shown in FIG. 11, the touch display screen further includes a black matrix 21; an orthographic projection of the shielding layer 20 on the substrate substrate 90 The orthographic projections of the black matrix 21 on the base substrate 90 overlap, for example, the orthographic projection of the shield layer 20 is located within the orthographic projection of the black matrix 21.
  • the opaque conductive material may be, for example, at least one or a combination of several kinds of metal materials such as molybdenum (Mo), molybdenum alloy, aluminum (Al), aluminum alloy, and copper (Cu).
  • Mo molybdenum
  • Al aluminum
  • Cu copper
  • the embodiment of the present disclosure can avoid the influence on the aperture ratio by matching the opaque shielding layer 20 with the black matrix.
  • the touch display screen includes an array substrate 01 and a counter substrate 02, and the array substrate 01 and the counter substrate 02 are both located in the display panel, for example; the touch electrodes 10 are disposed on the array substrate. 01 or on the substrate 02 (ie, the array substrate 01 or the counter substrate 02 includes the touch electrode 10).
  • the touch electrode 10 may be disposed on the side of the array substrate 01 facing the counter substrate 02 in an in-cell touch mode, or may be disposed in the pair as shown in FIG. The side of the cassette substrate 02 facing the array substrate 01.
  • the touch electrode 10 can also be disposed on the side of the counter substrate 02 away from the array substrate 01 in an on cell touch mode.
  • the touch electrode 10 is disposed in the pair of boxes.
  • the substrate 02 and the touch display screen are included between upper polarizers (not shown).
  • the array substrate 01 may include a thin film transistor, and a pixel electrode electrically connected to the drain of the thin film transistor, and may further include a common electrode.
  • the counter substrate 02 may be a transparent substrate or include a black matrix and a color filter layer.
  • the common electrode may be disposed on the array substrate 01 or on the counter substrate 02; the color filter layer may be disposed on the counter substrate 02 or on the array substrate 01.
  • the embodiment of the present disclosure does not limit the position of the shielding layer 20 in the direction perpendicular to the bearing surface of the base substrate 90, as long as the shielding layer 20 does not affect the recognition of the touch position by the touch electrode 10. .
  • both the array substrate 01 and the counter substrate 02 include a base substrate
  • one of the base substrates may be used as a reference for the orthographic projection of the touch electrodes 10 and the shield layer 20, that is, the base substrate 90.
  • the touch electrode 10 and the display panel are integrated to make the touch display screen lighter and thinner.
  • the shielding layer 20 is disposed on a side of the counter substrate 02 away from the array substrate 01; an orthographic projection of the shielding layer 20 on the substrate substrate 90 is located on the base substrate of the touch electrode 10
  • the gap between the upper orthographic projections, for example, the orthographic projection of the entire shield layer 20 is located between the orthographic projections of the touch electrodes 10.
  • the position of the touch electrode 10 in FIG. 6 is only illustrative. In the case where the shielding layer 20 and the touch electrode 10 are both disposed on the side of the counter substrate 02 away from the array substrate 01, the shielding layer 20 and the touch electrode 10 may be located in the same layer or may be located in different layers.
  • the shielding layer 20 is disposed on the counter substrate 02 away from the array substrate.
  • One side of 01 on the one hand, can make the process of preparing the shielding layer 20 simpler.
  • the shielding layer 20 when the shielding layer 20 is located above the touch electrode 10, the shielding layer 20 can interfere with, for example, a radiated electric field by shielding external signals. Touching the influence of the display screen to improve the uniformity of the capacitance; in the case where the shielding layer 20 is located under the touch electrode 10, the shielding layer 20 can be caused by the circuit trace on the shield array substrate 01, the touch display structure, and the like. Internal interference signals to improve capacitance uniformity.
  • the shield layer 20 is disposed on a side of the array substrate 01 away from the counter substrate 02.
  • the orthographic projection of the entire shielding layer 20 on the substrate substrate is located between the orthographic projections of the touch electrodes 10 on the substrate substrate; or, as shown in FIG. 7 (b), the shielding layer 20 is laid flat, in which case the orthographic projection of the shielding layer 20 overlaps with the gap between the orthographic projection of the touch electrode 10 and its orthographic projection.
  • the shielding layer 20 is disposed on the side of the array substrate 01 away from the counter substrate 02.
  • the process of preparing the shielding layer 20 can be made simpler.
  • the shielding layer 20 can be shielded from the outside.
  • Signal interference such as the effect of a radiated electric field on the touch screen, improves capacitance uniformity.
  • the shielding layer 20 is laid flat on one layer, which can further simplify the process.
  • the shielding layer 20 is disposed in the array substrate 01; the orthographic projection of the shielding layer 20 on the substrate substrate is located between the orthographic projections of the touch electrodes 10 on the substrate substrate.
  • the orthographic projection of the entire shield layer 20 is located in the gap between the orthographic projections of the touch electrodes 10.
  • the shielding layer 20 is disposed in the counter substrate 02; the orthographic projection of the shielding layer 20 on the substrate is located on the orthographic projection of the touch electrode 10 on the substrate.
  • the gap between the two, for example, the orthographic projection of the entire shield layer 20 is located between the orthographic projections of the touch electrodes 10.
  • the positions of the touch electrodes 10 in FIGS. 8 and 9 are merely illustrative.
  • the shielding layer 20 and the touch electrode 10 may be located on the same layer. Can be located on different layers.
  • the embodiment of the present disclosure can function as an internal interference signal caused by shielding circuit traces on the array substrate 01 and setting the touch display screen structure, thereby improving Tolerance uniformity.
  • the shielding layer 20 includes a first shielding layer 201 and a second shielding layer 202.
  • the first shielding layer 201 and the second shielding layer 202 are respectively located in the array substrate 01 and the counter substrate 02.
  • first shielding layer 201 and the second shielding layer 202 may be electrically connected by a sealing frame including a conductive gold ball or a conductive silver paste.
  • the embodiment of the present disclosure further provides a display device.
  • the display device includes the above touch display screen and the circuit board CP; the shielding layer 20 is connected to the control circuit 70 on the circuit board CP; The control circuit 70 is configured to: in the display phase, control the shielding layer 20 to be grounded; in the touch phase, apply a control signal to the shielding layer 20 to shield the interference signal except the touch signal.
  • the circuit board CP may be a Flexible Printed Circuit (FPC).
  • FPC Flexible Printed Circuit
  • the circuit board CP is pressed into the array substrate 01 by a bonding process.
  • the shielding layer 20 is different from the control circuit 70 on the circuit board CP, and can be classified into the following cases, for example.
  • the shielding layer 20 when the shielding layer 20 is disposed in the array substrate 01, since the circuit board itself needs to be bound to the array substrate 01, the shielding layer 20 can pass through the wiring in the array substrate 01 and the control circuit 70 of the circuit board CP. connection.
  • the shield layer 20 when the shield layer 20 is disposed in the counter substrate 02, the shield layer 20 may be connected to the control circuit 70 on the circuit board CP through the conductive silver paste.
  • the shielding layer 20 when the shielding layer 20 is disposed on the side of the counter substrate 02 away from the array substrate 01, the shielding layer 20 can pass through the conductive paste (for example, conductive black glue) used in the metal shell of the package array substrate 01 and the counter substrate 02. Or connected to the control circuit 70 on the circuit board CP by conductive silver paste.
  • the conductive paste for example, conductive black glue
  • the shielding layer 20 when the shielding layer 20 is disposed on the side of the array substrate 01 away from the counter substrate 02, the shielding layer 20 may pass through a conductive paste (for example, a conductive black glue) used in the metal casing, and a control circuit connected to the circuit board CP. 70 connections.
  • a conductive paste for example, a conductive black glue
  • the control circuit of the first shielding layer 201 and the circuit board CP can be made through the traces in the array substrate 01. 70 is connected, and the second shielding layer 202 can also be connected to the control circuit 70 on the circuit board CP through the conductive silver paste.
  • the first shielding layer 201 is connected to the control circuit 70 on the circuit board CP, and the manufacturing process is relatively simple. Therefore, it is preferable to connect the control circuit 70 of the circuit board CP through the first shield layer 201 using the traces in the array substrate 01.
  • the embodiment of the present disclosure provides a display device, by providing a shielding layer 20 in a touch display screen, and making the shielding layer 20 on the substrate of the touch display screen according to the position of the shielding layer 20 relative to the touch electrode 10;
  • the orthographic projection is at least located on the orthographic projection of the touch electrode 10 on the substrate
  • the gap between the two can avoid the influence of the shielding layer 20 on the touch function.
  • the control circuit applies a signal to the shielding layer 20 during the touch phase.
  • the shielding layer 20 can shield the internal signal interference caused by the circuit trace on the array substrate 01, the touch display structure setting, or the external signal interference, thereby improving the uniformity of the touch display value and improving the touch precision.
  • the antistatic capability of the touch display screen can also be improved.
  • control circuit CP applies the same control signal to the shield layer 20 as the touch signal applied to the touch electrode 10.
  • the control circuit 70 applies the same control signal as the touch signal to the shielding layer 20, so that the shielding layer 20 acts as a shielding signal interference, thereby improving the capacitance of the display device. Uniformity, so that the position of the touch object (such as a finger) can be determined more accurately, and the touch performance of the display device is improved.
  • the touch panel includes: a base substrate 90; a plurality of block touches spaced apart on the base substrate 90
  • the electrode 10 is a self-capacitance electrode; and the conductive shielding layer 20 on the substrate substrate 90, the shielding layer 20 is insulated from the touch electrode 10, and the orthographic projection of the shielding layer 20 on the substrate substrate 90 is at least A gap between the orthographic projections of the touch electrodes 10 on the substrate substrate 90.
  • the touch electrode 10 and the shielding layer 20 may be respectively located on two sides of the base substrate 90; or, as shown in FIG. 13B, the touch electrode 10 and the shielding layer 20 may be located on the base substrate 90. The same side.
  • An embodiment of the present disclosure provides a touch display screen, a display device, and a touch panel.
  • the shielding layer is disposed, and the orthographic projection of the shielding layer on the substrate is at least at the touch electrode according to the position of the shielding layer relative to the touch electrode.
  • the gap between the orthographic projections on the substrate can avoid the influence of the shielding layer on the touch function.
  • the shielding layer can be shielded by the array substrate.
  • Internal signal interference caused by circuit traces, touch screen structure settings, or external signal interference can improve the uniformity of the touch display and improve touch accuracy.
  • the antistatic capability of the touch display screen can also be improved.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种触摸显示屏、显示装置和触摸面板，触摸显示屏包括间隔设置的多个块状触控电极(10)，以及导电的屏蔽层(20)，屏蔽层(20)与触控电极(10)绝缘；屏蔽层(20)在触摸显示屏中衬底基板(90)上的正投影至少位于触控电极(10)在衬底基板(90)上的正投影之间的空隙，触摸显示屏可以提高自电容屏的容值均一性。

Description

触摸显示屏、显示装置和触摸面板 技术领域
本公开实施例涉及一种触摸显示屏、显示装置和触摸面板。
背景技术
投射电容式触摸显示屏除了具有操作简单、方便的优点外，还具有高穿透性、耐久性、防水防尘等优点，因此，投射电容式触摸显示屏被广泛应用于公共信息查询、领导办公、工业控制、军事指挥、电子游戏等领域。
按照检测原理，投射电容式触摸显示屏可以分为：自电容屏和互电容屏两种类型。自电容屏中的触控电极通常是按照行和列来布置的，通过扫描行和列，根据测得的电容确定手指的触摸位置；互电容屏中，感应电极与驱动电极交叉设置(例如垂直设置)，感应电极的一行(或一列)与驱动电极的一列(或一行)共同作用，得到二者相交处的电容，从而确定触摸位置。
相较于互电容屏，自电容屏的触控容易受容值均一性的影响。
发明内容
本公开的实施例提供一种触摸显示屏、显示装置和触摸面板，本公开实施例可以提高自电容屏的容值均一性。
一方面，本公开的至少一个实施例提供一种触摸显示屏，其包括间隔设置的多个块状触控电极，还包括导电的屏蔽层，所述屏蔽层与所述触控电极绝缘；所述屏蔽层在所述触摸显示屏中衬底基板上的正投影至少位于所述触控电极在所述衬底基板上的正投影的空隙。
例如，所述屏蔽层的材料为透明导电材料。
例如，所述屏蔽层的材料为不透明导电材料；所述触摸显示屏还包括黑矩阵；所述屏蔽层在所述衬底基板上的正投影与所述黑矩阵在所述衬底基板上的正投影重叠。
例如，所述触摸显示屏包括阵列基板和对盒基板；所述触控电极设置在所述阵列基板或所述对盒基板上。
例如，所述屏蔽层设置在所述对盒基板远离所述阵列基板的一侧；整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影的空隙。
例如，所述屏蔽层设置在所述阵列基板远离所述对盒基板的一侧；整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影的空隙；或者，所述屏蔽层平铺一层设置。
例如，所述屏蔽层设置在所述阵列基板中；整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影的空隙。
例如，所述屏蔽层设置在所述对盒基板中；整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影的空隙。
例如，所述触控电极为自电容电极。
例如，所述屏蔽层的所述正投影与所述触控电极的所述正投影部分重叠。
例如，所述屏蔽层的所述正投影与所述触控电极的所述正投影的重叠宽度小于50微米。
另一方面，本公开至少一个实施例提供一种显示装置，其包括上述任一项所述的触摸显示屏、以及电路板；屏蔽层与所述电路板上的控制电路连接；所述控制电路被配置为：在显示阶段，控制所述屏蔽层接地；在触控阶段，向所述屏蔽层施加控制信号，以屏蔽除触控信号外的干扰信号。
例如，在触控阶段，所述控制电路向所述屏蔽层施加与所述触控信号相同的控制信号。
本公开的至少一个实施例提供一种触摸面板，其包括：衬底基板；在所述衬底基板上间隔设置的多个块状触控电极，其中，所述触控电极为自电容电极；以及位于所述衬底基板上的导电的屏蔽层。所述屏蔽层与所述触控电极绝缘，所述屏蔽层在所述衬底基板上的正投影至少位于所述触控电极在所述衬底基板上的正投影之间的空隙。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为本公开实施例提供的一种触摸显示屏的俯视示意图一；
图2为本公开实施例提供的一种触摸显示屏的俯视示意图二；
图3为本公开实施例提供的一种触摸显示屏的剖视示意图一；
图4为本公开实施例提供的一种触摸显示屏的剖视示意图二；
图5为本公开实施例提供的一种触摸显示屏的剖视示意图三；
图6为本公开实施例提供的一种触摸显示屏的剖视示意图四；
图7(a)为本公开实施例提供的一种触摸显示屏的剖视示意图五；
图7(b)为本公开实施例提供的一种触摸显示屏的剖视示意图六；
图8为本公开实施例提供的一种触摸显示屏的剖视示意图七；
图9为本公开实施例提供的一种触摸显示屏的剖视示意图八；
图10为本公开实施例提供的一种触摸显示屏的剖视示意图九；
图11为本公开实施例提供的一种触摸显示屏的剖视示意图十；
图12为本公开实施例提供的一种显示装置的剖视示意图；
图13A为本公开实施例提供的一种触摸面板的剖视示意图一；
图13B为本公开实施例提供的一种触摸面板的剖视示意图二。
附图标记：
01-阵列基板；02-对盒基板；10-触控电极；20-屏蔽层；21-黑矩阵；201-第一屏蔽层；202-第二屏蔽层；90-衬底基板。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例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的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不 排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
本公开实施例提供一种触摸显示屏，如图1和图2所示，该触摸显示屏包括间隔设置的多个块状触控电极10，还包括导电的屏蔽层20，屏蔽层20与触控电极10绝缘；屏蔽层20在触摸显示屏中衬底基板90上的正投影至少位于触控电极10在所述衬底基板90上的正投影之间的空隙。例如，导电屏蔽层20的平面形状(即俯视形状)为网格状。
需要说明的是，第一，不对屏蔽层20与触控电极10的沿垂直于衬底基板90的承载面方向上的相对位置进行限定，屏蔽层20可以位于触控电极10的上方或下方，屏蔽层20也可以与触控电极10同层设置。
第二，触摸显示屏包括显示面板，显示面板至少包括一个衬底基板。当触摸显示屏中具有一个以上的衬底基板时，可仅选择一个衬底基板作为触控电极10和屏蔽层20的正投影的参考基板，即上述衬底基板90。
其中，衬底基板例如可以为玻璃基板、塑料基板或者石英基板等任意类型的透明基板。
第三，本领域技术人员应该明白，由于触摸显示屏是通过触摸物(例如手指)与触控电极10之间的电容(也就是说触控电极10为自电容电极)来确定触摸位置，在屏蔽层20位于触控电极10的上方的情况下，即在触控电极10位于在垂直于衬底基板90的方向上位于屏蔽层20和衬底基板90之间的情况下，也即在屏蔽层20位于触控电极10的触控面一侧的情况下，若屏蔽层20覆盖整个触控电极10，则会导致触控电极10无法进行触控位置的识别，因此屏蔽层20在所述衬底基板上的正投影至少位于触控电极10在所述衬底基板90上的正投影之间的空隙。
在屏蔽层20位于触控电极10的下方的情况下，屏蔽层20即使与整个触控电极10交叠，也不会影响触控电极10对触控位置的识别，因此，屏蔽层20在所述衬底基板90上的正投影除位于触控电极10在所述衬底基板90上的正投影之间的空隙，还可覆盖至少部分触控电极10，即屏蔽层20在所述衬底基板90上的正投影至少位于触控电极10在所述衬底基板90上的正投影 的空隙。
第四，在屏蔽层20在所述衬底基板90上的正投影位于触控电极10在所述衬底基板90上的正投影之间的空隙的情况下，如图1所示，屏蔽层20可以与触控电极10无重叠；例如，如图2所示，屏蔽层20也可以与触控电极10有部分重叠，在此情况下，基于屏蔽层20的宽度且为了不影响触控，二者重叠的宽度w例如小于50μm。
例如，在屏蔽层20与触控电极10同层设置(即位于同一层中)的情况下，为了保证二者的绝缘，屏蔽层20可以与触控电极10无重叠。
本公开实施例提供一种触摸显示屏，通过在触摸显示屏中设置屏蔽层20，并根据屏蔽层20相对触控电极10的设置位置使屏蔽层20在所述触摸显示屏中衬底基板90上的正投影至少位于触控电极10在所述衬底基板90上的正投影之间的空隙，可以避免屏蔽层20对触控功能的影响。例如，屏蔽层20被配置为在触控阶段被施加信号(例如，该信号与施加到触控电极10的信号相同)并且在显示阶段接地。通过在触控阶段，向屏蔽层20施加信号，可使屏蔽层20屏蔽由于显示面板的阵列基板上的电路走线、触摸显示屏结构设置等造成的内部信号干扰，或屏蔽外部信号干扰，因而可提高触摸显示屏的容值均一性，提高触控精度。在此基础上，通过在显示阶段，控制屏蔽层20接地，还可提高所述触摸显示屏的抗静电能力。
例如，所述屏蔽层20的材料为透明导电材料。这样，可不必考虑屏蔽层20是否会遮挡触摸显示屏发出的用于显示的光，因而也不会影响开口率。
透明导电材料例如可以为氧化铟锡(ITO)、氧化铟锡(IZO)等透明导电金属氧化物。
例如，屏蔽层20的材料为不透明导电材料；在此情况下，如图11所示，触摸显示屏还包括黑矩阵21；所述屏蔽层20在所述衬底基板90上的正投影与所述黑矩阵21在所述衬底基板90上的正投影重叠，例如屏蔽层20的所述正投影位于所述黑矩阵21的所述正投影之内。
不透明导电材料例如可以为钼(Mo)、钼合金、铝(Al)、铝合金、铜(Cu)等金属材料中的至少一种或几种的组合。
本公开实施例通过将不透光的屏蔽层20与黑矩阵对应，可避免对开口率的影响。
例如，如图3、图4和图5所示，触摸显示屏包括阵列基板01和对盒基板02，阵列基板01和对盒基板02例如都位于显示面板中；触控电极10设置在阵列基板01或对盒基板02上(即阵列基板01或对盒基板02包括触控电极10)。
例如，如图3所示，触控电极10可以以内嵌式触控(in cell touch)模式设置在阵列基板01的面向对盒基板02的一侧，或者可以如图4所示，设置在对盒基板02的面向阵列基板01的一侧。或者，如图5所示，触控电极10也可以以表面式触控(on cell touch)模式设置在对盒基板02的远离阵列基板01的一侧，例如，触控电极10设置在对盒基板02和触控显示屏包括的上偏光片(图中未示出)之间。
例如，阵列基板01可以包括薄膜晶体管，以及与薄膜晶体管的漏极电连接的像素电极，进一步的还可以包括公共电极。例如，对盒基板02可以为透明基板或者包括黑矩阵和彩色滤光层。例如，公共电极可以设置在阵列基板01上，也可以设置在对盒基板02上；彩色滤光层可以设置在对盒基板02上，也可以设置在阵列基板01上。
需要说明的是，本公开实施例不对屏蔽层20在垂直于衬底基板90的承载面的方向上的设置位置进行限定，只要屏蔽层20不影响触控电极10对触控位置的识别即可。
此外，由于阵列基板01和对盒基板02均包括衬底基板，因此可以其中一个衬底基板作为触控电极10和屏蔽层20的正投影的参考，即衬底基板90。
本公开实施例中，将触控电极10和显示面板整合在一起，使触摸显示屏更加轻薄。
例如，如图6所示，屏蔽层20设置在对盒基板02远离阵列基板01的一侧；屏蔽层20在所述衬底基板90上的正投影位于触控电极10在所述衬底基板上的正投影之间的空隙，例如，整个屏蔽层20的正投影位于触控电极10的正投影之间的空隙。
需要说明的是，图6中的触控电极10的设置位置仅为示意。在屏蔽层20与触控电极10都设置在对盒基板02远离阵列基板01的一侧的情况下，屏蔽层20与触控电极10可以位于同一层，也可以位于不同层。
在本公开实施例中，通过将屏蔽层20设置在对盒基板02远离阵列基板 01的一侧，一方面，可使制备形成屏蔽层20的工艺更为简单，另一方面，当屏蔽层20位于触控电极10上方时，屏蔽层20可通过屏蔽外部信号干扰例如辐射电场对触摸显示屏的影响，来提高容值均一性；在屏蔽层20位于触控电极10下方的情况下，屏蔽层20可通过屏蔽阵列基板01上的电路走线、触摸显示屏结构设置等造成的内部干扰信号，来提高容值均一性。
例如，屏蔽层20设置在阵列基板01远离对盒基板02的一侧。例如，如图7(a)所示，整个屏蔽层20在所述衬底基板上的正投影位于触控电极10在所述衬底基板上的正投影之间的空隙；或者，如图7(b)所示，屏蔽层20平铺一层设置，在这种情况下，屏蔽层20的正投影与触控电极10的正投影及其正投影之间的间隙重叠。
本公开实施例通过将屏蔽层20设置在阵列基板01远离对盒基板02的一侧，一方面，可使制备形成屏蔽层20的工艺更为简单，另一方面，屏蔽层20可通过屏蔽外部信号干扰例如辐射电场对触摸显示屏的影响，来提高容值均一性。其中，将屏蔽层20平铺一层设置，可以进一步简化工艺。
例如，如图8所示，屏蔽层20设置在阵列基板01中；屏蔽层20在所述衬底基板上的正投影位于触控电极10在所述衬底基板上的正投影之间的空隙，例如，整个屏蔽层20的正投影位于触控电极10的正投影之间的空隙。
或者，例如，如图9所示，屏蔽层20设置在对盒基板02中；屏蔽层20在所述衬底基板上的正投影位于触控电极10在所述衬底基板上的正投影之间的空隙，例如，整个屏蔽层20的正投影位于触控电极10的正投影之间的空隙。
需要说明的是，图8和图9中的触控电极10的设置位置仅为示意。当屏蔽层20与触控电极10都设置在阵列基板01中，或者屏蔽层20与触控电极10都设置在对盒基板02中时，屏蔽层20与触控电极10可以位于同一层，也可以位于不同层。
本公开实施例通过将屏蔽层20设置在阵列基板01或对盒基板02中，可以起到屏蔽阵列基板01上的电路走线、触摸显示屏结构设置等造成的内部干扰信号的作用，从而提高容值均一性。
例如，如图10所示，屏蔽层20包括第一屏蔽层201和第二屏蔽层202，第一屏蔽层201与第二屏蔽层202分别位于阵列基板01和对盒基板02中。
例如，第一屏蔽层201与第二屏蔽层202可通过包括导电金球的封胶框或导电银浆电连接。
本公开实施例还提供一种显示装置，例如，如图12所示，该显示装置包括上述的触摸显示屏、以及电路板CP；屏蔽层20与电路板CP上的控制电路70连接；所述控制电路70用于：在显示阶段，控制屏蔽层20接地；在触控阶段，向屏蔽层20施加控制信号，以屏蔽除触控信号外的干扰信号。
例如，电路板CP可以是柔性线路板(Flexible Printed Circuit，简称FPC)。例如，电路板CP通过绑定(bonding)工艺压合至阵列基板01中。
需要说明的是，当屏蔽层20的设置位置不同时，屏蔽层20与电路板CP上的控制电路70的连接方式不同，例如可分为以下几种情况。
第一，当屏蔽层20设置在阵列基板01中时，由于电路板本身需与阵列基板01进行绑定，因而，屏蔽层20可通过阵列基板01中的走线与电路板CP的控制电路70连接。
第二，当屏蔽层20设置在对盒基板02中时，屏蔽层20可以通过导电银浆与电路板CP上的控制电路70连接。
第三，当屏蔽层20设置在对盒基板02远离阵列基板01的一侧时，屏蔽层20可以通过封装阵列基板01和对盒基板02的金属壳中使用的导电胶(例如导电黑胶)，或者通过导电银浆与电路板CP上的控制电路70连接。
第四，当屏蔽层20设置在阵列基板01远离对盒基板02的一侧时，屏蔽层20可以通过金属壳中使用的导电胶(例如导电黑胶)，与电路板CP连接上的控制电路70连接。
第五，当第一屏蔽层201与第二屏蔽层202分别位于阵列基板01和对盒基板02中时，可通过阵列基板01中的走线使第一屏蔽层201与电路板CP的控制电路70连接，也可以通过导电银浆使第二屏蔽层202与电路板CP上的控制电路70连接，其中，通过第一屏蔽层201与电路板CP上的控制电路70连接，制作工艺较简单，因此，优选使用阵列基板01中的走线通过第一屏蔽层201与电路板CP的控制电路70连接。
本公开实施例提供一种显示装置，通过在触摸显示屏中设置屏蔽层20，并根据屏蔽层20相对触控电极10的设置位置，使屏蔽层20在所述触摸显示屏中衬底基板上的正投影至少位于触控电极10在所述衬底基板上的正投影 之间的空隙，可以避免屏蔽层20对触控功能的影响，在此基础上，通过将屏蔽层20与电路板中的控制电路连接，在触控阶段，控制电路向屏蔽层20施加信号，可使屏蔽层20屏蔽由于阵列基板01上的电路走线、触摸显示屏结构设置等造成的内部信号干扰，或屏蔽外部信号干扰，因而可提高触摸显示屏的容值均一性，提高触控精度。在此基础上，通过在显示阶段，控制电路控制屏蔽层20接地，还可提高所述触摸显示屏的抗静电能力。
例如，在触控阶段，所述控制电路CP向屏蔽层20施加与施加到触控电极10的触控信号相同的控制信号。
本公开实施例中，在触控阶段，控制电路70通过向屏蔽层20施加与所述触控信号相同的控制信号，使屏蔽层20起到屏蔽信号干扰的作用，提高了显示装置的容值均一性，从而可以更精确地确定出触摸物(例如手指)的位置，提高显示装置的触控性能。
本公开的至少一个实施例还提供一种触摸面板，例如，如图13A和图13B所示，该触摸面板包括：衬底基板90；在衬底基板90上间隔设置的多个块状触控电极10，触控电极10为自电容电极；以及位于衬底基板90上的导电的屏蔽层20，屏蔽层20与触控电极10绝缘，屏蔽层20在衬底基板90上的正投影至少位于触控电极10在衬底基板90上的正投影之间的空隙。
例如，如图13A所示，触控电极10和屏蔽层20可以分别位于衬底基板90的两侧；或者，如图13B所示，触控电极10和屏蔽层20可以位于衬底基板90的同一侧。
本公开实施例提供一种触摸显示屏、显示装置和触摸面板，通过设置屏蔽层，并根据屏蔽层相对触控电极的设置位置使屏蔽层在衬底基板上的正投影至少位于触控电极在所述衬底基板上的正投影之间的空隙，可以避免屏蔽层对触控功能的影响，在此基础上，通过在触控阶段，向屏蔽层施加信号，可使屏蔽层屏蔽由于阵列基板上的电路走线、触摸显示屏结构设置等造成的内部信号干扰，或屏蔽外部信号干扰，因而可提高触摸显示屏的容值均一性，提高触控精度。在此基础上，通过在显示阶段，控制屏蔽层接地，还可提高所述触摸显示屏的抗静电能力。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2016年12月1日递交的中国专利申请第201621312804.6号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (14)

  1. 一种触摸显示屏，包括：
    间隔设置的多个块状触控电极，
    导电的屏蔽层，所述屏蔽层与所述触控电极绝缘；以及
    衬底基板，
    其中，所述屏蔽层在所述触摸显示屏中衬底基板上的正投影至少位于所述触控电极在所述衬底基板上的正投影之间的空隙。
  2. 根据权利要求1所述的触摸显示屏，其中，所述屏蔽层的材料为透明导电材料。
  3. 根据权利要求1所述的触摸显示屏，其中，
    所述屏蔽层的材料为不透明导电材料；
    所述触摸显示屏还包括黑矩阵；所述屏蔽层在所述衬底基板上的正投影与所述黑矩阵在所述衬底基板上的正投影重叠。
  4. 根据权利要求1至3中任一项所述的触摸显示屏，其中，所述触摸显示屏包括阵列基板和对盒基板；
    所述触控电极设置在所述阵列基板或所述对盒基板上。
  5. 根据权利要求4所述的触摸显示屏，其中，
    所述屏蔽层设置在所述对盒基板远离所述阵列基板的一侧；
    整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影之间的空隙。
  6. 根据权利要求4所述的触摸显示屏，其中，所述屏蔽层设置在所述阵列基板远离所述对盒基板的一侧；
    整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影之间的空隙；或者，所述屏蔽层平铺一层设置。
  7. 根据权利要求4所述的触摸显示屏，其中，所述屏蔽层设置在所述阵列基板中；
    整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影之间的空隙。
  8. 根据权利要求4所述的触摸显示屏，其中，所述屏蔽层设置在所述对 盒基板中；
    整个所述屏蔽层在所述衬底基板上的正投影位于所述触控电极在所述衬底基板上的正投影之间的空隙。
  9. 根据权利要求1-8中任一项所述的触摸显示屏，其中，所述触控电极为自电容电极。
  10. 根据权利要求1-4中任一项所述的触摸显示屏，其中，所述屏蔽层的所述正投影与所述触控电极的所述正投影部分重叠。
  11. 根据权利要求10所述的触摸显示屏，其中，所述屏蔽层的所述正投影与所述触控电极的所述正投影的重叠宽度小于50微米。
  12. 一种显示装置，包括权利要求1-11任一项所述的触摸显示屏、以及电路板；其中，
    屏蔽层与所述电路板上的控制电路连接；
    所述控制电路被配置为：在显示阶段，控制所述屏蔽层接地；在触控阶段，向所述屏蔽层施加控制信号，以屏蔽除触控信号外的干扰信号。
  13. 根据权利要求12所述的显示装置，其中，在触控阶段，所述控制电路向所述屏蔽层施加与所述触控信号相同的控制信号。
  14. 一种触摸面板，包括：
    衬底基板；
    在所述衬底基板上间隔设置的多个块状触控电极，其中，所述触控电极为自电容电极；以及
    位于所述衬底基板上的导电的屏蔽层，其中，所述屏蔽层与所述触控电极绝缘，
    其中，所述屏蔽层在所述衬底基板上的正投影至少位于所述触控电极在所述衬底基板上的正投影之间的空隙。
PCT/CN2017/091110 2016-12-01 2017-06-30 触摸显示屏、显示装置和触摸面板 WO2018099069A1 (zh)

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