WO2020118845A1 - 触控显示面板及其制作方法、触控显示装置 - Google Patents
触控显示面板及其制作方法、触控显示装置 Download PDFInfo
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- WO2020118845A1 WO2020118845A1 PCT/CN2019/071788 CN2019071788W WO2020118845A1 WO 2020118845 A1 WO2020118845 A1 WO 2020118845A1 CN 2019071788 W CN2019071788 W CN 2019071788W WO 2020118845 A1 WO2020118845 A1 WO 2020118845A1
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- 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
Definitions
- the invention relates to the field of display technology, in particular to a touch display panel, a manufacturing method thereof, and a touch display device.
- the active matrix driven organic light emitting diode Active Matrix Organic Light Emitting Diode; AMOLED
- AMOLED Active Matrix Organic Light Emitting Diode
- the touch technology with AMOLED display mainly includes Add on Type touch film bonding technology and On-Cell technology. Whether it is a plug-in or glass packaging technology, there is a problem of increasing the thickness of the product and affecting the design of the narrow frame.
- the external touch film bonding technology uses optical clear adhesive (OCA) to bond the touch film and the AMOLED display together.
- OCA optical clear adhesive
- the touch film can be placed above or below the polarizer.
- the bonding tolerance is generally above 0.1mm and the number of bonding is increased, so the external touch film bonding technology will increase the thickness of the product And it is not conducive to the design of narrow frame products.
- On-Cell AMOLED touch technology is to make a touch sensing circuit on the encapsulated glass of the display, and then attach the side of the encapsulated glass to the AMOLED display through glass glue, no need to separately attach the external touch film . Because this structure is only suitable for making a rigid AMOLED display, and the overall thickness of the product is thick, it is not suitable for the current development direction of light and thin products.
- TFE Thin Film Encapsulation
- the invention provides a touch display panel, a manufacturing method thereof, and a touch display device, which shield and disperse the interference signal of the OLED layer, improve touch sensitivity, and at the same time reduce the bonding process of the touch organic light-emitting diode display panel and reduce Product thickness.
- the present invention provides a touch display panel including a flexible substrate and a metal grid touch electrode layer.
- the metal grid touch electrode layer is disposed on the flexible substrate.
- the metal grid touch electrode layer has a plurality of driving electrodes and a plurality of sensing electrodes.
- Each of the driving electrode and each of the sensing electrodes is provided with a plurality of floating electrodes spaced apart from each other, wherein the floating electrode is insulated from the driving electrode and the sensing electrode, and the floating electrode It is arranged on the same layer as the driving electrode and the sensing electrode.
- each of the floating electrodes is linearly arranged along a specific angle in each of the driving electrodes and each of the sensing electrodes, and the specific angle is 45 degrees or 135 degrees.
- the floating electrode has a circular arc shape, a circular shape, a rectangular shape or a hexagonal shape.
- the floating electrode further includes a plurality of slave floating electrodes, and each of the slave floating electrodes is spaced apart from each other.
- the driving electrode and the sensing electrode are embedded and connected with each other in a T-shaped interaction area, an L-shaped interaction area, or a pulse matrix interaction area to increase the touch contact area.
- the direction of the touch signal of the metal mesh touch electrode layer and the direction of a gate signal line and a source-drain (SD) signal line of the flexible substrate are 45 degrees.
- the present invention further includes a base layer provided on the flexible substrate and an insulating layer provided on the base layer, and the metal grid touch electrode layer further includes a base layer provided on the base layer A first metal layer, a second metal layer provided on the insulating layer, and conductive vias respectively connecting the first metal layer and the two metal layers, wherein the first metal layer and the second metal layer
- the metal layer is set in different layers.
- the conductive via is opened in the insulating layer, and the second metal layer is electrically connected to the first metal layer through the conductive via to connect the drive electrodes spaced apart from each other Conducting with the sensing electrode, the material of the conductive via is the same as the material of the second metal layer.
- the flexible substrate includes a stacked flexible substrate, an organic light emitting diode layer and a thin film encapsulation layer, the organic light emitting diode layer includes a plurality of sub-pixels arranged at intervals, and the metal grid touch electrode The touch metal circuit of the layer is disposed between each of the adjacent sub-pixels, and the line width is between 0.5-5 microns ( ⁇ m).
- the invention also provides a touch display device, including:
- Touch display panel including:
- a metal grid touch electrode layer is provided on the flexible substrate, the metal grid touch electrode layer has a plurality of driving electrodes and a plurality of sensing electrodes, each of the driving electrodes and each of the sensing electrodes A plurality of floating electrodes spaced apart from each other are provided, wherein the floating electrodes are insulated from the driving electrodes and the sensing electrodes, and the floating electrodes are provided on the same layer as the driving electrodes and the sensing electrodes; and
- the protective layer is provided on the metal grid touch electrode layer.
- each of the floating electrodes is linearly arranged along a specific angle in each of the driving electrodes and each of the sensing electrodes, and the specific angle is 45 degrees or 135 degrees.
- the floating electrode has a circular arc shape, a circular shape, a rectangular shape or a hexagonal shape, and the floating electrode further includes a plurality of subordinate floating electrodes, each of the subordinate floating electrodes The electrodes are spaced apart from each other.
- the driving electrode and the sensing electrode are embedded and connected with each other in a T-shaped interaction area, an L-shaped interaction area, or a pulse matrix interaction area to increase the touch contact area.
- the present invention further includes a base layer provided on the flexible substrate and an insulating layer provided on the base layer.
- the metal grid touch electrode layer includes a first layer provided on the base layer A metal layer, a second metal layer provided on the insulating layer, and conductive vias respectively connecting the first metal layer and the two metal layers, the first metal layer and the second metal layer A different layer is provided, the conductive via is opened in the insulating layer, the second metal layer is electrically connected to the first metal layer through the conductive via, so as to separate the drive electrode and the The sensing electrode is turned on, and the material of the conductive via is the same as the material of the second metal layer.
- the flexible substrate includes a stacked flexible substrate, an organic light-emitting diode layer, and a thin-film encapsulation layer
- the organic light-emitting diode layer includes a plurality of sub-pixels arranged at intervals
- the metal grid touch electrode The touch metal circuit of the layer is disposed between each of the adjacent sub-pixels, and the line width is between 0.5-5 microns ( ⁇ m).
- the present invention also provides a method for manufacturing a touch display panel, including the following steps:
- the metal grid touch electrode layer has a plurality of driving electrodes and a plurality of sensing electrodes, each of the driving electrodes and each of the sensing electrodes A plurality of floating electrodes spaced apart from each other are formed inside; wherein the floating electrodes are insulated from the driving electrodes and the sensing electrodes, and the floating electrodes are arranged on the same layer as the driving electrodes and the sensing electrodes .
- the method further includes the following steps:
- a second metal layer is formed on the insulating layer, wherein the first metal layer and the second metal layer are provided in different layers, and the driving electrode and the sensing electrode are formed on the second metal layer, respectively.
- the second metal layer when the second metal layer is formed, the second metal layer is further etched to form conductive vias connecting the first metal layer and the two metal layers to conduct the Drive electrode and the sensing electrode.
- each of the floating electrodes further includes a plurality of slave floating electrodes, and each of the slave floating electrodes is spaced apart from each other.
- the direction of the touch signal of the metal mesh touch electrode layer and the direction of a gate signal line and a source-drain (SD) signal line of the flexible substrate are 45 degrees.
- the present invention uses a special metal grid touch sensing circuit (ie, a touch sensing pattern) to use a touch signal and the gate and source/drain of the OLED layer ( SD)
- a special metal grid touch sensing circuit ie, a touch sensing pattern
- the design of the 45° angle between the signals to minimize the overlapping area of the touch signal and the gate signal and source-drain signal can be reduced to the greatest extent, thereby enhancing the stability and sensitivity of touch, and realizing flexible display touch.
- the present invention provides a bridging metal solution with good continuity and little optical impact on the OLED layer.
- a T-shaped interaction region is provided between the driving electrode and the sensing electrode. Double M-shaped bridging metal connections are used in the T-shaped interaction zone to connect the adjacent driving electrodes and the sensing electrodes to each other. In this way, the Tx and Rx touch sensing area is increased, the touch sensing area is enlarged, the touch sensing signal is effectively enhanced, and the mutual capacitance touch function is realized.
- the touch driving and sensing electrodes are provided with circular, circular, and other floating electrodes. The floating electrodes are separated from the touch electrodes and the sensing electrodes for shielding and dispersing interference signals of the OLED layer. Effectively control the size of the capacitance value, shield and disperse the interference signal of the OLED layer and improve touch sensitivity.
- FIG. 1 is a schematic cross-sectional structure diagram of a cross-section of a touch display panel and a touch display device of the present invention
- FIG. 2 is a schematic diagram of a plurality of sub-pixels disposed on a metal grid touch electrode layer at intervals of the present invention
- FIG. 3 is a schematic diagram of the driving electrode and the sensing electrode of the present invention are connected by metal leads;
- FIG. 4A is a schematic diagram of the T-shaped interaction area between the driving electrode and the sensing electrode of the present invention.
- 4B is an enlarged schematic view of part 4B of FIG. 4A;
- FIG. 5 is a schematic diagram of the touch signal direction, the gate signal line direction, and the source-drain signal line direction of the metal mesh touch electrode layer of the present invention.
- FIG. 6 is a block diagram of a method for manufacturing a touch display panel of the present invention.
- the present invention provides a touch display panel including a flexible substrate 10 and a metal grid touch electrode layer 100.
- the touch display panel referred to herein is applied to, but not limited to, AMOLED display screens, smart phones, tablet computers, or other suitable electronic devices.
- the metal grid touch electrode layer 100 is disposed on the flexible substrate 10.
- the metal grid touch electrode layer 100 has a plurality of driving electrodes 102 (Tx) and a plurality of sensing electrodes 104 (Rx).
- Each driving electrode 102 (Tx) and each sensing electrode 104 (Rx) are respectively provided with a plurality of floating electrodes 103 (Floating Electrode) spaced apart from each other.
- the floating electrode 103 is insulated from the driving electrode 102 and the sensing electrode 104, and the floating electrode 103 is provided on the same layer as the driving electrode 102 and the sensing electrode 104.
- the touch display panel further includes a base layer 20 provided on the flexible substrate 10 and an insulating layer 40 provided on the base layer 20.
- the metal grid touch electrode layer 100 further includes a first metal layer 30 disposed on the base layer 20, a second metal layer 50 disposed on the insulating layer 40, and respectively connected to the first metal The conductive via 52 of the layer 30 and the two metal layers 50, wherein the first metal layer 30 and the second metal layer 50 are provided in different layers.
- the conductive via 52 is opened in the insulating layer 60.
- the second metal layer 50 is electrically connected to the first metal layer 30 through the conductive via 52 to conduct the driving electrode 102 and the sensing electrode 104 that are spaced apart from each other.
- the material of the conductive via 52 is the same as the material of the second metal layer 70. That is, the first metal layer 50 serves as a bridge metal and is electrically connected to the second metal layer 50 through the conductive via 52 to connect the driving electrode 102 (Tx) and the sensing electrode 104 (Rx) one.
- the flexible substrate 10 includes a flexible substrate 11, an organic light-emitting diode layer 12 and a thin-film encapsulation layer 13 that are stacked.
- the organic light emitting diode layer 12 includes a plurality of sub-pixels 22 arranged at intervals
- the metal grid touch electrode layer 100 includes a base layer 20, a first metal layer 30, an insulating layer 40, and a second metal layer 50 to form a touch Control the metal line (as shown in Figure 2).
- the touch metal circuit is disposed between each of the adjacent sub-pixels 22 to avoid blocking the luminous light and brightness.
- the line width of the touch metal circuit shown in FIG. 2 is between 0.5 and 5 microns ( ⁇ m), which can effectively reduce the bridge metal area and prevent the bridge metal from causing optical interference to the display screen.
- the flexible substrate 10 referred to herein is preferably a TFT backplane (TFT backplane), and the OLED layer 12 having RGB sub-pixels 22 is provided on the flexible substrate 11.
- the thin film encapsulation layer 13 is preferably provided on the OLED layer 12 by TFE (Thin Film Encapsulation).
- the base layer 20 is preferably silicon nitride disposed on the thin film encapsulation layer 13.
- the touch metal circuit of the metal grid touch electrode layer 100 is preferably a titanium aluminum titanium three-layer composite metal, which can prevent metal oxidation and enhance the bending resistance of the touch sensing circuit such as titanium aluminum titanium or molybdenum aluminum molybdenum
- the driving electrode 102 (driving circuit) and the sensing electrode 104 (sensing circuit) are separated by an insulating layer 40.
- each driving electrode 102 and each sensing electrode 104 further includes a plurality of metal leads 106 connected to the touch signal lead-out pad 108.
- Each driving electrode 102 is electrically connected with each bridge metal 30.
- the touch signal extraction pad 108 is connected to the driving signal (not shown) of the display panel to output a touch sensing signal.
- Each of the floating electrodes 103 is linearly arranged along a specific angle in each of the driving electrodes 102 and each of the sensing electrodes 104.
- the specific angle is 45 degrees or 135 degrees. That is to say, the direction of the touch signal 101 of the metal mesh touch electrode layer 100 (as shown by the dotted line in FIG. 5) and the direction of the gate signal line 105 and the source and drain signal line 107 of the organic light emitting diode layer 20
- the included angle is 45 degrees or 135 degrees, respectively, which minimizes the overlap between the touch signal 101 of the metal mesh touch electrode layer 100 and the driving signal of the organic light emitting diode layer 20. Therefore, the interference of the driving signal of the touch display panel on the touch signal can be reduced to the greatest extent, thereby enhancing the stability and sensitivity of touch, and realizing flexible display touch.
- the shape of the floating electrode 103 in this embodiment is an arc, a circle, a rectangle, or a hexagon.
- the floating electrode 103 further includes a plurality of slave floating electrodes (not shown), and each of the slave floating electrodes is spaced apart from each other.
- the subordinate floating electrode is further divided, for example, from inside each floating electrode 103 to subdivide, for example, the arc-shaped floating electrode 103 into separate subordinate floating electrodes
- a slave floating electrode is further provided inside each floating electrode 103, thereby reducing signal interference between the driving signal of the touch display panel and the touch signal 101.
- a T-shaped interaction region 110 is included between the driving electrode 102 and the sensing electrode 104.
- L-shaped interaction regions or pulse matrix interaction regions are also embedded and connected to each other to increase the touch contact area between the driving electrode 102 and the sensing electrode 104.
- the T-shaped interaction region 110, the L-shaped interaction region or the pulse matrix interaction region has at least two conductive vias 52 to conduct the driving electrode 102 and the sensing electrode 104.
- a double M-shaped bridging metal connection is used therein.
- Eight (one overlapping) conductive vias 52 that are connected to each other are connected to the second metal layer 50 at both ends of the bridge metal.
- the floating electrode 103 is isolated from the touch electrode 102 and the sensing electrode 104 for shielding and dispersing interference signals or other noise signals of the organic light emitting diode layer 20 located below it, which can effectively control the size of the capacitance value and improve touch Sensitivity.
- the present invention also provides a touch display device including a protective layer 60 (FIG. 1) disposed on the metal grid touch electrode layer 100.
- the touch display device includes the touch display of the above embodiment panel.
- the protective layer 60 is disposed on the metal grid touch electrode layer 100, and the protective layer 60 is preferably a glass cover or a scratch-resistant film.
- the related structure of the touch display panel please refer to the above embodiment, and no more details are provided here.
- FIG. 6 also provides a method for manufacturing a touch display panel, including the following steps: S10, providing a flexible substrate 10; and S20, forming a metal grid touch electrode layer on the flexible substrate 10 100, the metal grid touch electrode layer 100 has a plurality of driving electrodes 102 and a plurality of sensing electrodes 104.
- a plurality of floating electrodes 103 spaced apart from each other are formed in each of the driving electrodes 102 and each of the sensing electrodes 104.
- the floating electrode 103 is insulated from the driving electrode 102 and the sensing electrode 104, and the floating electrode 103 is provided on the same layer as the driving electrode 102 and the sensing electrode 104.
- a plurality of driving electrodes 102 and a plurality of sensing electrodes 104 are formed on the second metal layer 50 by etching, for example, and form a metal grid touch sensing pattern (metal mesh sensing pattern).
- the method further includes the following steps: forming a base layer 20 on the flexible substrate 10.
- a first metal layer 30 is formed on the base layer 20.
- An insulating layer 40 is formed on the first metal layer 30.
- a second metal layer 50 is formed on the insulating layer 40.
- the first metal layer 30 and the second metal layer 50 are provided in different layers, and the driving electrode 102 and the sensing electrode 104 are formed on the second metal layer 50, respectively.
- the second metal layer 50 is further etched to form a conductive via 52 connecting the first metal layer 30 and the second metal layer 50, thereby turning on the driving electrode 102 and the induction electrode 104.
- Each of the floating electrodes 103 further includes making a plurality of slave floating electrodes, and each of the slave floating electrodes is spaced apart from each other.
- the angle between the direction of the touch signal 101 of the metal mesh touch electrode layer 100 and the direction of a gate signal line 105 and the direction of a source drain electrode (SD) signal line 107 of the flexible substrate 10 45 degrees respectively to reduce the interference of the driving signal of the touch display panel on the touch signal, thereby enhancing the stability and sensitivity of touch, and realizing flexible display touch.
- SD source drain electrode
- the touch display panel in this embodiment can effectively avoid the interference of the drive signal of the AMOLED display panel to the touch sensing signal, improve the touch sensitivity, and at the same time use, for example, an etching process to form a special touch sensing pattern to reduce touch OLED display Panel manufacturing process to reduce product thickness.
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Abstract
一种触控显示面板及其制作方法、触控显示装置，其中触控显示面板包括柔性基板及金属网格触控电极层。所述金属网格触控电极层设置于所述柔性基板上，所述金属网格触控电极层具有多个驱动电极和多个感应电极。每一所述驱动电极和每一所述感应电极内分别设置有相互间隔的多个浮置电极，其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置。借此，屏蔽和分散所述OLED层的干扰信号，以提升触控灵敏度。
Description
本发明涉及一种显示技术领域，尤其是涉及一种触控显示面板及其制作方法、触控显示装置。
近年来有源矩阵驱动有机发光二极管（Active Matrix Organic Light Emitting Diode；AMOLED）显示技术快速发展，对应的触控方案也同步跟进。目前搭配AMOLED显示屏的触控技术主要有外挂式（Add on Type）触控薄膜贴合技术和玻璃封装（On-Cell）技术。无论是外挂式还是玻璃封装技术，都存在增加产品厚度而影响窄边框设计的问题。
外挂式触控薄膜贴合技术，通过光学透明胶（Optical Clear Adhesive；OCA）将触控薄膜和AMOLED显示屏贴合在一起。根据实际产品结构不同，触控薄膜可以放置在偏光片的上方或者下方，其贴合公差一般都在0.1mm以上且增加了贴合次数，所以外挂式触控薄膜贴合技术会增大产品厚度而且不利于窄边框产品设计。On-Cell AMOLED触控技术是在显示屏的封装玻璃上制作触控感应线路，然后将封装玻璃的一面通过玻璃胶与AMOLED显示屏贴合在一起，不需要再单独贴合外挂式触控薄膜。由于这种结构只适合制作刚性的AMOLED显示屏，而且产品整体厚度较厚，不适合当前产品轻薄化的发展方向。
另外，在AMOLED显示屏的（Thin Film
Encapsulation；TFE）薄膜封装层上制作触控感应线路时，由于触控传感器（touch
sensor）距离 TFT层非常近，极易受到TFT扫描信号的干扰，例如产生噪音（noise）等信号干扰，导致触控功能无法正常、有效工作。
在AMOLED显示屏的（Thin Film
Encapsulation；TFE）薄膜封装层上制作触控感应线路时，由于触控传感器（touch
sensor）距离 TFT层非常近，极易受到TFT扫描信号的干扰，例如产生噪音（noise）等信号干扰，导致触控功能无法正常、有效工作。
本发明提供一种触控显示面板及其制作方法、触控显示装置，屏蔽和分散所述OLED层的干扰信号，提升触控灵敏度，同时减少了触控有机发光二极管显示面板贴合工艺，降低产品厚度。
为达成本发明的前述目的，本发明提供一种触控显示面板，包括柔性基板及金属网格触控电极层。所述金属网格触控电极层设置于所述柔性基板上，所述金属网格触控电极层具有多个驱动电极和多个感应电极。每一所述驱动电极和每一所述感应电极内分别设置有相互间隔的多个浮置电极，其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置。
根据本发明一实施例，每一所述浮置电极在每一所述驱动电极和每一所述感应电极内分别沿一特定角度线性排列，所述特定角度为45度或135度。
根据本发明一实施例，所述浮置电极的形状为圆弧形、圆形、矩形或六边形。
根据本发明一实施例，所述浮置电极内还包括多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。
根据本发明一实施例，所述驱动电极和所述感应电极之间以T形交互区、L形交互区或脉冲矩阵交互区相互嵌入连接，以增大触控接触面积，所述T形交互区、所述L形交互区或所述脉冲矩阵交互区以至少二导电通孔，导通所述驱动电极和所述感应电极。
根据本发明一实施例，所述金属网格触控电极层的触控信号方向与所述柔性基板的一栅极（Gate）信号线方向和一源漏极（SD）信号线方向之间的夹角分别为45度。
根据本发明一实施例，还包括设置在所述柔性基板上的基底层和设置在所述基底层上的绝缘层，所述金属网格触控电极层还包括设置在所述基底层上的第一金属层、设置在所述绝缘层上的第二金属层，以及分别连接所述第一金属层和所述二金属层的导电通孔，其中所述第一金属层和所述第二金属层异层设置。
根据本发明一实施例，所述导电通孔开设在所述绝缘层，所述第二金属层通过所述导电通孔电连接至所述第一金属层，以将相互间隔的所述驱动电极和所述感应电极导通，所述导电通孔的材质与所述第二金属层的材质相同。
根据本发明一实施例，所述柔性基板包括层叠设置的柔性衬底、有机发光二极管层和薄膜封装层，所述有机发光二极管层包括间隔设置的多个子像素，所述金属网格触控电极层的触控金属线路设置在相邻的每一所述子像素之间，且线宽介于0.5~5微米（㎛）。
本发明还提供一种触控显示装置，包括:
触控显示面板，包括:
柔性基板；及
金属网格触控电极层，设置于所述柔性基板上，所述金属网格触控电极层具有多个驱动电极和多个感应电极，每一所述驱动电极和每一所述感应电极内分别设置有相互间隔的多个浮置电极，其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置；及
保护层，设置在所述金属网格触控电极层上。
根据本发明一实施例，每一所述浮置电极在每一所述驱动电极和每一所述感应电极内分别沿一特定角度线性排列，所述特定角度为45度或135度。
根据本发明一实施例，所述浮置电极的形状为圆弧形、圆形、矩形或六边形，所述浮置电极内还包括多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。
根据本发明一实施例，所述驱动电极和所述感应电极之间以T形交互区、L形交互区或脉冲矩阵交互区相互嵌入连接，以增大触控接触面积，所述T形交互区、所述L形交互区或所述脉冲矩阵交互区以至少二导电通孔，导通所述驱动电极和所述感应电极。
根据本发明一实施例，还包括设置在所述柔性基板上的基底层和设置在所述基底层上的绝缘层，所述金属网格触控电极层包括设置在所述基底层上的第一金属层、设置在所述绝缘层上的第二金属层，以及分别连接所述第一金属层和所述二金属层的导电通孔，所述第一金属层和所述第二金属层异层设置，所述导电通孔开设在所述绝缘层，所述第二金属层通过所述导电通孔电连接至所述第一金属层，以将相互间隔的所述驱动电极和所述感应电极导通，所述导电通孔的材质与所述第二金属层的材质相同。
根据本发明一实施例，所述柔性基板包括层叠设置的柔性衬底、有机发光二极管层、薄膜封装层，所述有机发光二极管层包括间隔设置的多个子像素，所述金属网格触控电极层的触控金属线路设置在相邻的每一所述子像素之间，且线宽介于0.5~5微米（㎛）。再者，本发明还提供一种触控显示面板的制作方法，包括以下步骤：
S10、提供柔性基板；及
S20、在所述柔性基板上形成金属网格触控电极层，所述金属网格触控电极层具有多个驱动电极和多个感应电极，每一所述驱动电极和每一所述感应电极内分别形成有相互间隔的多个浮置电极；其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置。
根据本发明一实施例，还包括以下步骤:
在所述柔性基板上形成基底层；
在所述基底层上形成第一金属层；
在所述第一金属层上形成绝缘层；及
在所述绝缘层上形成第二金属层，其中所述第一金属层和所述第二金属层异层设置，且所述驱动电极和所述感应电极分别形成在所述第二金属层。
根据本发明一实施例，当形成所述第二金属层时，进一步蚀刻所述第二金属层以形成连接所述第一金属层和所述二金属层的导电通孔，以导通所述驱动电极和所述感应电极。
根据本发明一实施例，每一所述浮置电极内还包括制作多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。
根据本发明一实施例，所述金属网格触控电极层的触控信号方向与所述柔性基板的一栅极（Gate）信号线方向和一源漏极（SD）信号线方向之间的夹角分别为45度。
本发明实施例带来的有益效果为：本发明通过特殊的金属网格触控感应线路（即触控感应图案）采用触控信号与所述OLED层的栅极（Gate）和源漏极（SD）信号之间的夹角呈45°角的设计方案，以最大程度的减小触控信号与栅极信号和源漏极信号的重叠面积。因此，能够最大程度的减少触控OLED显示面板的驱动信号对触控信号的干扰，进而增强触控稳定性和灵敏度，实现柔性显示触控。
另外，本发明提出一种导通性好，对所述OLED层光学影响小的架桥金属方案。具体而言，在所述驱动电极和所述感应电极之间设置例如T形交互区。T形交互区内采用双M形架桥金属连接，将相互隔离且相邻的驱动电极和感应电极导通。借此，增大Tx、Rx触控感应面积，扩大触控感应区域，有效增强触控感应信号，实现互电容触控功能。再者，触控驱动和感应电极都设置有圆弧形、圆形等形状的浮置电极，所述浮置电极与触控电极和感应电极隔离，用于屏蔽和分散OLED层的干扰信号，有效控制电容值的大小、屏蔽和分散所述OLED层的干扰信号并提升触控灵敏度。
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明触控显示面板及触控显示装置的横截面的剖面结构示意图；
图2为本发明多个子像素间隔的设置在金属网格触控电极层的示意图；
图3为本发明驱动电极和感应电极通过金属引线连接的示意图；
图4A为本发明驱动电极和感应电极之间的T形交互区的示意图；
图4B为图4A的4B部分的放大示意图；
图5为本发明金属网格触控电极层的触控信号方向与栅极信号线方向和一源漏极信号线方向的示意图；及
图6为本发明触控显示面板的制作方法的方块图。
在具体实施方式中提及“实施例”意指结合实施例描述的特定特征、结构或特性可以包含在本发明的至少一个实施例中。在说明书中的不同位置出现的相同用语并非必然被限制为相同的实施方式，而应当理解为与其它实施例互为独立的或备选的实施方式。在本发明提供的实施例所公开的技术方案启示下，本领域的普通技术人员应理解本发明所描述的实施例可具有其他符合本发明构思的技术方案结合或变化。
请参照图1至图3所示，本发明提供一种触控显示面板，包括柔性基板10及金属网格触控电极层100。在此所指的触控显示面板应用在包含但不限于AMOLED显示屏、智能手机、平板电脑或其他适合的电子器件。
所述金属网格触控电极层100设置于所述柔性基板10上。所述金属网格触控电极层100具有多个驱动电极102（Tx）和多个感应电极104（Rx）。每一所述驱动电极102（Tx）和每一所述感应电极104（Rx）内分别设置有相互间隔的多个浮置电极103（Floating Electrode）。所述浮置电极103与所述驱动电极102和所述感应电极104绝缘，且所述浮置电极103与所述驱动电极102和所述感应电极104同层设置。
如图1所示的实施例中，所述触控显示面板还包括设置在所述柔性基板10上的基底层20和设置在所述基底层20上的绝缘层40。所述金属网格触控电极层100还包括设置在所述基底层20上的第一金属层30、设置在所述绝缘层40上的第二金属层50，以及分别连接所述第一金属层30和所述二金属层50的导电通孔52，其中所述第一金属层30和所述第二金属层50异层设置。
所述导电通孔52开设在所述绝缘层60。所述第二金属层50通过所述导电通孔52电连接所述第一金属层30，以将相互间隔的所述驱动电极102和所述感应电极104导通。所述导电通孔52的材质与所述第二金属层70的材质相同。也就是说，第一金属层50作为架桥金属并通过所述导电通孔52电性连接第二金属层50，以连接所述驱动电极102（Tx）和所述感应电极104（Rx）其中之一。
此外，所述柔性基板10包括层叠设置的柔性衬底11、有机发光二极管层12和薄膜封装层13。所述有机发光二极管层12包括间隔设置的多个子像素22，所述金属网格触控电极层100包括基底层20、第一金属层30、绝缘层40和第二金属层50，以形成触控金属线路(如图2所示)。所述触控金属线路设置在相邻的每一所述子像素22之间，以避免遮挡到其的发光光线与亮度。如图2所示的触控金属线路线宽介于0.5~5微米（㎛），如此可有效减小架桥金属面积，防止架桥金属对显示画面造成的光学干扰。
在此所指的柔性基板10 优选为TFT背板（TFT backplane），具有RGB子像素22的OLED层12设置在所述柔性基板11上。薄膜封装层13优选为TFE（Thin Film Encapsulation）设置在所述OLED层12上。基底层20优选为氮化硅设置在所述薄膜封装层13上。金属网格触控电极层100的触控金属线路较佳采用钛铝钛三层复合金属，既能防止金属氧化，又能增强触控感应线路的耐弯折性能例如钛铝钛或者钼铝钼，其中驱动电极102（驱动线路）和感应电极104（感应线路）之间通过绝缘层40隔离。
如图3所示的触控金属线路中，各驱动电极102及各感应电极104还包含以多个金属引线106连接置触控信号引出垫108。各驱动电极102以各架桥金属30电连接。触控信号引出垫108通过与显示面板的驱动信号（图略）连接，以输出触控感应信号。
请一并参考图4A、图4B及图5所示，每一所述浮置电极103在每一所述驱动电极102和每一所述感应电极104内分别沿一特定角度线性排列，所述特定角度为45度或135度。也就是说，金属网格触控电极层100的触控信号101方向（如图5的虚线）与所述有机发光二极管层20的栅极信号线105方向和源漏极信号线107方向之间的夹角分别为45度或135度，使金属网格触控电极层100的触控信号101与有机发光二极管层20的驱动信号重叠度最小。因此能够最大程度的减小触控显示面板的驱动信号对触控信号的干扰，进而增强触控稳定性和灵敏度，实现柔性显示触控。
在本实施例中的所述浮置电极103的形状为圆弧形、圆形、矩形或六边形。在一实施例中，所述浮置电极103内还包括多个从属浮置电极(图未示)，每一所述从属浮置电极彼此间隔设置。具体而言，根据干扰信号的要求，所述从属浮置电极例如从各浮置电极103内部再进行分割，以将例如为圆弧形的浮置电极103再分割成各自独立的从属浮置电极，或者是，将各浮置电极103内部再设置从属浮置电极，进而降低触控显示面板的驱动信号与触控信号101之间的信号干扰。
如图4A的所述驱动电极102和所述感应电极104之间包括T形交互区110。然而在其他次选的实施例中，也包括L形交互区或脉冲矩阵交互区相互嵌入连接，以增大驱动电极102和感应电极104之间的触控接触面积。所述T形交互区110、所述L形交互区或所述脉冲矩阵交互区以至少二导电通孔52，以导通所述驱动电极102和所述感应电极104。
如图4B所示，以T形交互区110而言，其内采用双M形架桥金属连接。在架桥金属两端采用8个（1个重迭）相互连接的导电通孔52与第二金属层50连接。浮置电极103与触控电极102和感应电极104隔离，用于屏蔽和分散位在其下方的有机发光二极管层20的干扰信号或其他杂讯信号，可有效控制电容值的大小并提升触控灵敏度。
本发明还提供一种触控显示装置，包括设置在所述金属网格触控电极层100上的保护层60(图1)，所述触控显示装置包括上述实施例的所述触控显示面板。保护层60设置在金属网格触控电极层100上，所述保护层60优选为玻璃盖板或耐刮薄膜。有关触控显示面板的相关结构请参照上述实施例所述，在此不再赘述。
请一并参照图6所示，还提供一种触控显示面板的制作方法，包括以下步骤：S10、提供柔性基板10；及S20、在所述柔性基板10上形成金属网格触控电极层100，所述金属网格触控电极层100具有多个驱动电极102和多个感应电极104。每一所述驱动电极102和每一所述感应电极104内分别形成有相互间隔的多个浮置电极103。所述浮置电极103与所述驱动电极102和所述感应电极104绝缘，且所述浮置电极103与所述驱动电极102和所述感应电极104同层设置。多个驱动电极102和多个感应电极104是在所述第二金属层50上例如以蚀刻制成并形成金属网格触控感应图案（metal
mesh sensing pattern）。
在本实施例中，还包括以下步骤:在所述柔性基板10上形成基底层20。在所述基底层20上形成第一金属层30。在所述第一金属层30上形成绝缘层40。在所述绝缘层40上形成第二金属层50。所述第一金属层30和所述第二金属层50异层设置，且所述驱动电极102和所述感应电极104分别形成在所述第二金属层50。当形成所述第二金属层50时，进一步蚀刻所述第二金属层50以形成连接所述第一金属层30和所述二金属层50的导电通孔52，从而导通所述驱动电极102和所述感应电极104。
每一所述浮置电极103内还包括制作多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。所述金属网格触控电极层100的触控信号101方向与所述柔性基板10的一栅极（Gate）信号线105方向和一源漏极（SD）信号线107方向之间的夹角分别为45度，以减少触控显示面板的驱动信号对触控信号的干扰，进而增强触控稳定性和灵敏度，实现柔性显示触控。
本实施例中的触控显示面板可以有效避免AMOLED显示面板的驱动信号对触控传感信号的干扰，提升触摸灵敏度，同时采用例如蚀刻工艺形成特殊的触控感应图案，减少了触控OLED显示面板制作工艺，降低产品厚度。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
Claims (20)
- 一种触控显示面板，包括:柔性基板；及金属网格触控电极层，设置于所述柔性基板上，所述金属网格触控电极层具有多个驱动电极和多个感应电极，每一所述驱动电极和每一所述感应电极内分别设置有相互间隔的多个浮置电极，其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置。
- 如权利要求1所述的触控显示面板，其中每一所述浮置电极在每一所述驱动电极和每一所述感应电极内分别沿一特定角度线性排列，所述特定角度为45度或135度。
- 如权利要求1所述的触控显示面板，其中所述浮置电极的形状为圆弧形、圆形、矩形或六边形。
- 如权利要求1所述的触控显示面板，其中所述浮置电极内还包括多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。
- 如权利要求1所述的触控显示面板，其中所述驱动电极和所述感应电极之间以T形交互区、L形交互区或脉冲矩阵交互区相互嵌入连接，以增大触控接触面积，所述T形交互区、所述L形交互区或所述脉冲矩阵交互区以至少二导电通孔，导通所述驱动电极和所述感应电极。
- 如权利要求1所述的触控显示面板，其中所述金属网格触控电极层的触控信号方向与所述柔性基板的一栅极（Gate）信号线方向和一源漏极（SD）信号线方向之间的夹角分别为45度。
- 如权利要求1所述的触控显示面板，其中还包括设置在所述柔性基板上的基底层和设置在所述基底层上的绝缘层，所述金属网格触控电极层包括设置在所述基底层上的第一金属层、设置在所述绝缘层上的第二金属层，以及分别连接所述第一金属层和所述二金属层的导电通孔，其中所述第一金属层和所述第二金属层异层设置。
- 如权利要求7所述的触控显示面板，其中所述导电通孔开设在所述绝缘层，所述第二金属层通过所述导电通孔电连接至所述第一金属层，以将相互间隔的所述驱动电极和所述感应电极导通，所述导电通孔的材质与所述第二金属层的材质相同。
- 如权利要求1所述的触控显示面板，其中所述柔性基板包括层叠设置的柔性衬底、有机发光二极管层、薄膜封装层，所述有机发光二极管层包括间隔设置的多个子像素，所述金属网格触控电极层的触控金属线路设置在相邻的每一所述子像素之间，且线宽介于0.5~5微米（㎛）。
- 一种触控显示装置，包括:触控显示面板，包括:柔性基板；及金属网格触控电极层，设置于所述柔性基板上，所述金属网格触控电极层具有多个驱动电极和多个感应电极，每一所述驱动电极和每一所述感应电极内分别设置有相互间隔的多个浮置电极，其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置；及保护层，设置在所述金属网格触控电极层上。
- 如权利要求10所述的触控显示装置，其中每一所述浮置电极在每一所述驱动电极和每一所述感应电极内分别沿一特定角度线性排列，所述特定角度为45度或135度。
- 如权利要求10所述的触控显示装置，其中所述浮置电极的形状为圆弧形、圆形、矩形或六边形，所述浮置电极内还包括多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。
- 如权利要求10所述的触控显示面板，其中所述驱动电极和所述感应电极之间以T形交互区、L形交互区或脉冲矩阵交互区相互嵌入连接，以增大触控接触面积，所述T形交互区、所述L形交互区或所述脉冲矩阵交互区以至少二导电通孔，导通所述驱动电极和所述感应电极。
- 如权利要求10所述的触控显示装置，其中还包括设置在所述柔性基板上的基底层和设置在所述基底层上的绝缘层，所述金属网格触控电极层包括设置在所述基底层上的第一金属层、设置在所述绝缘层上的第二金属层，以及分别连接所述第一金属层和所述二金属层的导电通孔，所述第一金属层和所述第二金属层异层设置，所述导电通孔开设在所述绝缘层，所述第二金属层通过所述导电通孔电连接至所述第一金属层，以将相互间隔的所述驱动电极和所述感应电极导通，所述导电通孔的材质与所述第二金属层的材质相同。
- 如权利要求10所述的触控显示装置，其中所述柔性基板包括层叠设置的柔性衬底、有机发光二极管层、薄膜封装层，所述有机发光二极管层包括间隔设置的多个子像素，所述金属网格触控电极层的触控金属线路设置在相邻的每一所述子像素之间，且线宽介于0.5~5微米（㎛）。
- 一种触控显示面板的制作方法，包括以下步骤：S10、提供柔性基板；及S20、在所述柔性基板上形成金属网格触控电极层，所述金属网格触控电极层具有多个驱动电极和多个感应电极，每一所述驱动电极和每一所述感应电极内分别形成有相互间隔的多个浮置电极；其中所述浮置电极与所述驱动电极和所述感应电极绝缘，且所述浮置电极与所述驱动电极和所述感应电极同层设置。
- 如权利要求16所述的触控显示面板的制作方法，其中还包括以下步骤:在所述柔性基板上形成基底层；在所述基底层上形成第一金属层；在所述第一金属层上形成绝缘层；及在所述绝缘层上形成第二金属层，其中所述第一金属层和所述第二金属层异层设置，且所述驱动电极和所述感应电极分别形成在所述第二金属层。
- 如权利要求17所述的触控显示面板的制作方法，其中当形成所述第二金属层时，进一步蚀刻所述第二金属层以形成连接所述第一金属层和所述二金属层的导电通孔，从而导通所述驱动电极和所述感应电极。
- 如权利要求16所述的触控显示面板的制作方法，其中每一所述浮置电极内还包括制作多个从属浮置电极，每一所述从属浮置电极彼此间隔设置。
- 如权利要求16所述的触控显示面板的制作方法，其中所述金属网格触控电极层的触控信号方向与所述柔性基板的一栅极（Gate）信号线方向和一源漏极（SD）信号线方向之间的夹角分别为45度。
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| CN110187798A (zh) | 2019-06-05 | 2019-08-30 | 京东方科技集团股份有限公司 | 一种触控显示基板及其制作方法、触控显示装置 |
| CN110489007B (zh) * | 2019-07-24 | 2021-01-15 | 武汉华星光电半导体显示技术有限公司 | 触控面板及有机发光显示器件 |
| CN110597418A (zh) * | 2019-09-19 | 2019-12-20 | 京东方科技集团股份有限公司 | 触控模组及其制备方法、触控显示屏、触控显示装置 |
| CN111427478A (zh) * | 2020-03-30 | 2020-07-17 | 武汉华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
| US11508785B2 (en) | 2020-04-08 | 2022-11-22 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel and display device for improving touch effects |
| CN111475051B (zh) * | 2020-04-08 | 2021-11-02 | 武汉华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
| CN111552404B (zh) * | 2020-04-24 | 2024-07-12 | 京东方科技集团股份有限公司 | 柔性触控基板、柔性触控面板和装置 |
| CN113672111B (zh) * | 2020-05-15 | 2024-04-05 | 京东方科技集团股份有限公司 | 触控基板及显示装置 |
| WO2021227390A1 (zh) | 2020-05-15 | 2021-11-18 | 京东方科技集团股份有限公司 | 触控基板及显示装置 |
| CN111665980A (zh) * | 2020-05-19 | 2020-09-15 | 武汉华星光电半导体显示技术有限公司 | Oled触控显示装置及其驱动方法 |
| CN111708458A (zh) * | 2020-06-18 | 2020-09-25 | 京东方科技集团股份有限公司 | Oled显示面板及显示装置 |
| CN111694466B (zh) * | 2020-06-30 | 2025-07-08 | 武汉华星光电半导体显示技术有限公司 | 触控显示屏及电子装置 |
| CN111930265B (zh) * | 2020-09-15 | 2022-02-22 | 武汉华星光电半导体显示技术有限公司 | 触控显示面板 |
| CN112817487B (zh) * | 2021-02-26 | 2022-08-02 | 湖北长江新型显示产业创新中心有限公司 | 一种显示面板及显示装置 |
| KR102861332B1 (ko) * | 2021-07-02 | 2025-09-18 | 엘지디스플레이 주식회사 | 터치 디스플레이 장치 및 디스플레이 패널 |
| CN115509392B (zh) * | 2022-10-27 | 2026-02-17 | 维信诺科技股份有限公司 | 触控面板及显示装置 |
| WO2024088356A1 (zh) * | 2022-10-27 | 2024-05-02 | 云谷（固安）科技有限公司 | 触控面板及显示装置 |
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