WO2020113803A1 - 触控面板及显示装置 - Google Patents

触控面板及显示装置 Download PDF

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Publication number
WO2020113803A1
WO2020113803A1 PCT/CN2019/073136 CN2019073136W WO2020113803A1 WO 2020113803 A1 WO2020113803 A1 WO 2020113803A1 CN 2019073136 W CN2019073136 W CN 2019073136W WO 2020113803 A1 WO2020113803 A1 WO 2020113803A1
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WO
WIPO (PCT)
Prior art keywords
layer
shielding
electrodes
touch
insulating layer
Prior art date
Application number
PCT/CN2019/073136
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English (en)
French (fr)
Inventor
陈碧
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/322,957 priority Critical patent/US11374066B2/en
Publication of WO2020113803A1 publication Critical patent/WO2020113803A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • 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
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • 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
    • 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
    • G06F2203/04111—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 invention relates to the field of display technology, in particular to a touch panel and a display device.
  • OLED Organic Light Emitting Diode
  • the display panel is usually equipped with a touch screen for users to touch and control the electronic products.
  • the touch screen has a responsive interface, which can save a lot of time and improve work efficiency, so the touch screen has been applied to people's lives.
  • the touch sensor used in the flexible OLED panel is mainly an external type, that is, the sensor module is completed on the film and then attached to the OLED panel, and the touch sensor is directly manufactured on the flexible OLED panel.
  • the signal driving pattern (TX) and the signal receiving pattern (RX) on the film are concentrated on the same layer. Because the thickness of the thin film packaging material is only a few microns, the touch sensor is too close to the electron emission layer (cathode) of the OLED, and RX and TX are at the same level.
  • the cathode of the OLED is coupled to the RX of the touch sensor, which causes great interference to the touch signal. Affect the touch effect.
  • the object of the present invention is to provide a touch panel and a display device, which are used to reduce the interference caused by the cathode in the display panel to the touch signal and to improve the sensitivity of touch control.
  • the touch panel of the present invention includes: a shielding layer including a shielding portion and a conductive portion surrounded by the shielding portion; an insulating layer is provided on the shielding layer, and the insulating layer is provided with multiple Perforations, the plurality of perforations are located on the conducting portion; and a touch metal layer is provided on the insulating layer, the touch metal layer includes a plurality of first electrodes arranged in a first direction, And a plurality of second electrodes arranged in the second direction, and the plurality of first electrodes communicate with each other through the plurality of perforations of the insulating layer and the conducting portion of the shielding layer, and the shielding portion of the shielding layer passes The touch metal layer is grounded, wherein the plurality of first electrodes are spaced apart from each other, the plurality of second electrodes are spaced apart from each other, and a bridging portion is provided between the plurality of second electrodes, which is located on the Directly above the conducting portion of the shielding layer, for
  • the shielding layer is made of a metal material, which is disposed on the encapsulation layer of a display panel.
  • the present invention further provides a touch panel, comprising: a shielding layer including a shielding portion and a conductive portion surrounded by the shielding portion; an insulating layer is provided on the shielding layer, and the insulating layer is provided with a plurality of perforations , The plurality of perforations are located on the conducting portion; and a touch metal layer is provided on the insulating layer, the touch metal layer includes a plurality of first electrodes arranged along the first direction, and along A plurality of second electrodes arranged in the second direction, the plurality of first electrodes communicate with each other through the plurality of perforations of the insulating layer and the conducting portion of the shielding layer, and the shielding portion of the shielding layer passes through the The touch metal layer is grounded.
  • the plurality of first electrodes are spaced apart from each other, and the plurality of second electrodes are spaced apart from each other, wherein a bridging portion is provided between the plurality of second electrodes, which is located in the shielding Directly above the conducting portion of the layer, for bridging the plurality of second electric levels
  • the plurality of perforations of the insulating layer are filled with a conductive material, so that the plurality of first electrodes are electrically connected to each other through the conduction part.
  • a protective layer is provided on the touch metal layer, which is made of an insulating material.
  • the shielding layer is made of a metal material, which is disposed on the encapsulation layer of a display panel.
  • the present invention further provides a display device, including a display panel and a touch panel provided on the display panel, wherein the touch panel includes: a shielding layer provided on the organic light emitting diode display panel On the encapsulation layer, the shielding layer includes a shielding portion and a conductive portion surrounded by the shielding portion; an insulating layer is provided on the shielding layer, the insulating layer is provided with a plurality of through holes, the plurality of through holes are located on the On the conducting portion; and a touch metal layer provided on the insulating layer, the touch metal layer includes a plurality of first electrodes arranged in a first direction, and a plurality of first electrodes arranged in a second direction Two electrodes, the plurality of first electrodes communicate with each other through the plurality of through holes of the insulating layer and the conducting portion of the shielding layer, and the shielding portion of the shielding layer is grounded through the touch metal layer.
  • the touch panel includes: a shielding layer provided on the organic light emitting dio
  • the plurality of first electrodes are spaced apart from each other, and the plurality of second electrodes are spaced apart from each other, wherein a bridging portion is provided between the plurality of second electrodes, which is located in the shielding
  • the conductive part of the layer is directly above the plurality of second electrical stages.
  • the plurality of perforations of the insulating layer are filled with a conductive material, so that the plurality of first electrodes are electrically connected to each other through the conduction part.
  • Each of the first electrodes of the present invention is connected to the conducting portion of the lower shielding layer through the corresponding through hole of the insulating layer, and is electrically connected to each other to form a driving (Tx) signal channel, which effectively simplifies the structural design of the driving circuit.
  • the shielding layer of the present invention is grounded by being connected to a peripheral ground line (not shown) in the touch metal layer, so that the shielding portion forms a whole-surface barrier, which can effectively shield the organic light emission
  • the cathode of the diode display panel affects the reception (Rx) signal of the second electrode.
  • the shielding portion of the shielding layer effectively protects the plurality of second electrodes from the cathode, reducing the interference of the noise generated by the organic light emitting diode display panel on the Rx signal, Improve the signal-to-noise ratio of the touch panel and increase the sensitivity of touch control.
  • FIG. 1 is an exploded view of a partial cross-sectional structure of a touch panel according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional structure diagram of the touch panel of FIG. 1.
  • FIG. 3 is a schematic cross-sectional structure diagram of a touch display device of the present invention.
  • FIG. 4 is a schematic structural diagram of a shielding layer of the touch panel of the present invention.
  • FIG. 5 is a partial schematic view of the touch display device of the present invention.
  • FIG. 6 is a schematic structural diagram of a touch display device according to a preferred embodiment of the present invention.
  • the invention is a touch panel and a display device, which can realize touch positioning according to the capacitance change of the touch panel.
  • the display panel applied to the touch panel may be a thin film transistor liquid crystal display panel or an organic light emitting diode display panel.
  • FIG. 1 is an exploded view of a cross-sectional structure of a touch panel according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional structure diagram of the touch panel of FIG. 1.
  • the touch panel 1 of the present invention includes a shielding layer 11 including indium tin oxide (ITO).
  • the shielding layer 11 is formed by a photolithography process of exposure and development to include a shielding portion 111 and a conducting portion 112 Patterned masking layer.
  • the conducting portion 112 is located in the shielding portion 111, and there is a gap 113 between the shielding portion 111 and the conducting portion 112.
  • An insulating layer 12 is disposed on the shielding layer 11 and forms a flat surface.
  • the insulating layer 12 can be made of silicon dioxide, and includes a plurality of spaced through holes 120.
  • the plurality of through holes 120 are located on the conducting portion 112 of the shielding layer 11.
  • a touch metal layer 13 is disposed on the insulating layer 12.
  • the touch metal layer 13 uses exposure and development photolithography processes to form an image including a plurality of first electrode groups 131 and a plurality of second electrode groups 132
  • a metal layer, wherein the touch metal layer 13 may be made of copper, silver or ITO, and the first electrode group 131 and the second electrode group 132 are located above the shielding portion 111.
  • a protective layer 16 made of an insulating material is provided on the touch metal layer 13 to protect the circuit on the touch metal layer 13.
  • the first electrode group 131 and the second electrode group 132 are located in the same layer. For conductive objects that are in contact with or close to the touch surface of the touch metal layer 13, a relatively uniform sensing sensitivity can be obtained.
  • Each of the first electrode groups 131 includes a plurality of first electrodes (Tx) 14 arranged in a first direction
  • each of the second electrode groups 132 includes a plurality of second electrodes (Rx) arranged in a second direction )15, wherein the first direction is a longitudinal extension, and the second direction is a lateral extension.
  • the first electrode 14 and the second electrode 15 each have a diamond configuration, wherein the plurality of first electrodes 14 are driving electrodes, and the plurality of second electrodes 15 It is the receiving electrode and is evenly distributed on the insulating layer 12.
  • the plurality of first electrodes 14 and the second electrodes 15 together constitute a touch sensing unit, thereby forming a mutual capacitance touch screen structure for touch sensing to achieve the effect of touch control.
  • FIG. 3 is a schematic cross-sectional structure diagram of the touch display device of the present invention. Specifically, FIG. 3 is a schematic cross-sectional structure diagram of line A-A in FIG. 5.
  • the touch panel 1 of the present invention is provided on an organic light emitting diode (Organic Light Emitting) Diode, OLED) on the display panel 2.
  • OLED Organic Light Emitting
  • the shielding layer 11 is provided on the encapsulation layer 21 of the organic light emitting diode display panel 2, and the encapsulation layer 21 is formed on the cathode layer 22 of the OLED display panel 2.
  • the shielding layer 11, the insulating layer 12, the touch metal layer 13, and the protective layer 16 are sequentially formed.
  • FIG. 4 is a schematic structural diagram of a shielding layer of the touch panel of the present invention. As shown in the figure, the space 113 between the shielding portion 111 and the conducting portion 112 of the shielding layer 11 surrounds the conducting portion 112, wherein the conducting portion 112 has a rectangular configuration.
  • FIG. 5 is a schematic structural diagram of a single first electrode group 131 and a single second electrode group 132 of the touch panel 1 of the present invention. Referring to FIGS.
  • each first electrode 14 of the first electrode group 131 of the present invention are adjacent to the through hole 120 of the insulating layer 12, the through hole 120 is filled with a conductive material 121,
  • the conductive material 121 is ITO, but other materials with conductive properties can also be substituted.
  • the plurality of first electrodes 14 communicate with each other through the conductive material 121 in the plurality of through holes 120 and the conducting portion 112 of the shielding layer 11, thereby forming a first electrode channel.
  • a bridge portion 151 is provided between the plurality of second electrodes 15 of the second electrode group 132, which is located directly above the conducting portion 112 of the shielding layer 11 and is used to bridge the Multiple second electrical levels 15.
  • the plurality of first electrodes 14 and the plurality of second electrodes 15 are connected to the control chip 17 on the periphery of the touch panel 1 by signal lines, respectively, for providing driving signals and receiving sensing signals.
  • each of the first electrodes 14 of the present invention is connected to the conducting portion 112 of the lower shielding layer 11 through the corresponding through-hole 120 of the insulating layer 12, and are electrically connected to each other to form a Tx channel, which effectively simplifies driving Structural design of the line.
  • the ITO shielding layer 11 of the present invention is connected to the peripheral ground line (not shown) in the touch metal layer 13 to achieve grounding, so that the shielding portion 111 forms a whole-surface barrier, which can effectively shield
  • the cathode 22 of the OLED display panel 2 affects the Rx signal of the second electrode (Rx) 15.
  • the shielding portion 111 of the shielding layer 11 effectively protects the plurality of second electrodes 15 from the cathode 22 and reduces the noise generated by the OLED display panel 2 against the Rx signal Can improve the signal-to-noise ratio of the touch panel and increase the sensitivity of touch control.

Abstract

一种触控面板，包含一遮蔽层，包括遮蔽部及导通部;一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及一触控金属层，设于所述绝缘层上。所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地。

Description

触控面板及显示装置 技术领域
本发明涉及显示技术领域，特别是涉及一种触控面板及显示装置。
 背景技术
随着显示技术的发展，有机发光二极管(Organic LightEmitting Diode，OLED)面板在越来越多的电子产品上被使用，其中柔性OLED面板更是由于其可绕折性备受关注。普遍地，显示面板通常具备有触摸屏，用以供使用者触摸控制电子产品。触摸屏拥有反应灵敏的界面，可以节省大量时间，提高工作效率，所以目前触摸屏已应用到人们生活的方面。
柔性OLED面板搭配可绕折触摸传感器(Touch Sensor)也成为当前移动端设备的趋势。柔性OLED面板所采用的触摸传感器主要为外挂式，即在薄膜上完成传感器模组后再贴合到OLED面板上，并在柔性OLED面板上直接进行触摸传感器的制作。薄膜上的信号驱动图案（TX）与信号接收图案（RX）集中在同一层。由于薄膜封装材料厚度只有十几微米，触摸传感器与OLED的电子发射层（阴极）太近，并且RX与TX处于同一层面，OLED阴极耦合触摸传感器的RX，对触控信号造成极大的干扰，影响触控效果。
 技术问题
本发明的目的在于提供一种触控面板及显示装置，用以降低显示面板内阴极对触控信号造成的干扰，并可提高触摸控制的灵敏度。
 技术解决方案
为实现上述目的，本发明的触控面板，包含：一遮蔽层，包括遮蔽部及被遮蔽部围绕的导通部;一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及一触控金属层，设于所述绝缘层上，所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地，其中所述多个第一电极相互间隔设置，所述多个第二电极相互间隔设置，所述多个第二电极之间设有架桥部，其位于所述遮蔽层的导通部的正上方，用以桥接所述多个第二电级，且所述绝缘层的多个穿孔填充有导电材料，使所述多个第一电极通过所述导通部相互导通。
在一优选实施例中，所述遮蔽层的遮蔽部及导通部之间具有一间隔，所述间隔围绕所述导通部。
在另一优选实施例中，所述遮蔽层为金属材料所制，其设于一显示面板的封装层上。
本发明另外提供一种触控面板，包含：一遮蔽层，包括遮蔽部及被遮蔽部围绕的导通部;一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及一触控金属层，设于所述绝缘层上，所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地。
在一优选实施例中，所述多个第一电极相互间隔设置，所述多个第二电极相互间隔设置，其中所述多个第二电极之间设有架桥部，其位于所述遮蔽层的导通部的正上方，用以桥接所述多个第二电级
在另一优选实施例中，所述绝缘层的多个穿孔填充有导电材料，使所述多个第一电极通过所述导通部相互导通。
在另一优选实施例中，所述遮蔽层的遮蔽部及导通部之间具有一间隔，所述间隔围绕所述导通部。
在另一优选实施例中，所述触控金属层上设有一保护层，其以绝缘材料所制。
在另一优选实施例中，所述遮蔽层为金属材料所制，其设于一显示面板的封装层上。
本发明另外提供一种显示装置，包括显示面板及设于所述显示面板上的触控面板，其特征在于，所述触控面板包括：一遮蔽层，设于所述有机发光二极管显示面板的封装层上，所述遮蔽层包括遮蔽部及被遮蔽部围绕的导通部;一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及一触控金属层，设于所述绝缘层上，所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地。
在一优选实施例中，所述多个第一电极相互间隔设置，所述多个第二电极相互间隔设置，其中所述多个第二电极之间设有架桥部，其位于所述遮蔽层的导通部的正上方，用以桥接所述多个第二电级。
在另一优选实施例中，所述绝缘层的多个穿孔填充有导电材料，使所述多个第一电极通过所述导通部相互导通。
在另一优选实施例中，所述遮蔽层的遮蔽部及导通部之间具有一间隔，所述间隔围绕所述导通部。
 有益效果
本发明的每一所述第一电极通过所述绝缘层的对应穿孔连接于下方遮蔽层的导通部，并相互导通连接形成驱动(Tx)信号通道，有效简化驱动线路的结构设计。特别说明的是，本发明的遮蔽层通过连接到触控金属层中的外围接地线路(未图示)而达到接地，使所述遮蔽部形成整面的屏障，可以有效地遮蔽所述有机发光二极管显示面板的阴极中，对所述第二电极的接收(Rx)信号的影响。换句话说，所述遮蔽层的遮蔽部有效地保护所述多个第二电极不受所述阴极的影响，降低所述有机发光二极管显示面板产生的声噪(noise)对Rx信号的干扰，提升触摸面板的信噪比，并提高触摸控制的灵敏度。
 附图说明
图1为根据本发明的一较佳实施例的触控面板的部份剖面结构分解图。
图2为图1的触控面板的剖面结构示意图。
图3为本发明的触控显示装置的剖面结构示意图。
图4为本发明的触控面板的遮蔽层的结构示意图。
图5为本发明的触控显示装置的部份结构示意图。
图6为根据本发明一较佳实施例的触控显示装置的结构示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
本发明为一种触控面板及显示装置，能够根据触控面板的电容变化而能实现触摸定位。所述触控面板所应用的显示面板可以是薄膜晶体管液晶显示面板或有机发光二级管显示面板等。
图1为根据本发明的一较佳实施例的触控面板的剖面结构分解图。图2为图1的触控面板的剖面结构示意图。本发明的触控面板1包括遮蔽层11，其包含氧化铟锡(indium tin oxide, ITO)，所述遮蔽层11通过曝光及显影的光刻工艺而形成包括遮蔽部111及导通部112的图案化遮蔽层。于此较佳实施例中，所述导通部112位于所述遮蔽部111中，且所述遮蔽部111及导通部112之间具有一间隔113。一绝缘层12设于所述遮蔽层11上，并形成一平坦的表面。所述绝缘层12可为二氧化硅所制，且包括有多个间隔排列的穿孔120。所述多个穿孔120位于所述遮蔽层11的导通部112上。一触控金属层13设于所述绝缘层12上，所述触控金属层13利用曝光及显影的光刻工艺形成包括多个第一电极组131及多个第二电极组132的图像化金属层，其中所述触控金属层13可为铜、银或ITO所制，而所述第一电极组131及所述第二电极组132位于所述遮蔽部111的上方。此外，所述触控金属层13上设有一绝缘材料所制的保护层16，用以保护所述触控金属层13上的线路。所述第一电极组131及所述第二电极组132位于同一层，对于接触或靠近所述触控金属层13的触摸表面的导电对象而言，可获得较均匀的感测灵敏度。
续请参阅图2并配合图6观之。每一所述第一电极组131包括沿第一方向排列的多个第一电极(Tx)14，而每一所述第二电极组132包括沿第二方向排列的多个第二电极(Rx)15，其中所述第一方向为纵向延伸，而所述第二方向为横向延伸。于此较佳实施例中，所述第一电极14及所述第二电极15分别具有菱形构型，其中所述多个第一电极14即为驱动电极，而所述多个第二电极15即为接收电极，并均匀分布于所述绝缘层12上。所述多个第一电极14及第二电极15共同构成触摸传感单元，进而形成一互电容式触摸屏结构，用以供触摸感应而达到触摸控制的功效。
图3为本发明的触控显示装置的剖面结构示意图，具体地，图3为图5的A-A线段的剖面结构示意图。本发明的触控面板1设于有机发光二极管(Organic Light Emitting Diode, OLED)显示面板2上。具体而言，所述遮蔽层11设于所述有机发光二极管显示面板2的封装层21上，所述封装层21形成于所述OLED显示面板2的阴极层22上。如图3所示，由所述封装层21依序往上分别为所述遮蔽层11、所述绝缘层12、所述触控金属层13及所述保护层16。
图4为本发明的触控面板的遮蔽层的结构示意图。如图所示，所述遮蔽层11的遮蔽部111及导通部112之间的间隔113围绕所述导通部112，其中所述导通部112具有矩形构型。图5为本发明触控面板1的单一所述第一电极组131及单一所述第二电极组132的结构示意图。请参阅图5及图3观之，本发明第一电极组131的每一第一电极14的相对二端部邻接所述绝缘层12的穿孔120，所述穿孔120内填充有导电材料121，于此较佳实施例中，所述导电材料121为ITO，惟亦可以其他具有导电性质材料替代。所述多个第一电极14通过所述多个穿孔120内的导电材料121及所述遮蔽层11的导通部112相互导通，进而形成第一电极通道。
续请参阅图5，所述第二电极组132的多个第二电极15之间设有架桥部151，其位于所述遮蔽层11的导通部112的正上方，用以桥接所述多个第二电级15。如图6所示，所述多个第一电极14及所述多个第二电极15分别由信号线连接至触控面板1外围的控制芯片17，用以提供驱动信号及接收感应信号。
如前所述，本发明的每一所述第一电极14通过所述绝缘层12的对应穿孔120连接于下方遮蔽层11的导通部112，并相互导通连接形成Tx通道，有效简化驱动线路的结构设计。特别说明的是，本发明的ITO遮蔽层11通过连接到触控金属层13中的外围接地线路(未图示)而达到接地，使所述遮蔽部111形成整面的屏障，可以有效地遮蔽所述OLED显示面板2的阴极22中，对所述第二电极(Rx)15的Rx信号的影响。换句话说，所述遮蔽层11的遮蔽部111有效地保护所述多个第二电极15不受所述阴极22的影响，降低所述OLED显示面板2产生的声噪(noise)对Rx信号的干扰，而可提升触摸面板的信噪比，并提高触摸控制的灵敏度。
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 (13)

  1. 一种触控面板，包含：
    一遮蔽层，包括遮蔽部及被遮蔽部围绕的导通部;
    一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及
    一触控金属层，设于所述绝缘层上，所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地；
    其中所述多个第一电极相互间隔设置，所述多个第二电极相互间隔设置，所述多个第二电极之间设有架桥部，其位于所述遮蔽层的导通部的正上方，用以桥接所述多个第二电级，且所述绝缘层的多个穿孔填充有导电材料，使所述多个第一电极通过所述导通部相互导通。
  2. 如权利要求1的触控面板，其中所述遮蔽层的遮蔽部及导通部之间具有一间隔，所述间隔围绕所述导通部。
  3. 如权利要求1的触控面板，其中所述遮蔽层为金属材料所制，其设于一显示面板的封装层上。
  4. 一种触控面板，包含：
    一遮蔽层，包括遮蔽部及被遮蔽部围绕的导通部;
    一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及
    一触控金属层，设于所述绝缘层上，所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地。
  5. 如权利要求4的触控面板，其中所述多个第一电极相互间隔设置，所述多个第二电极相互间隔设置，其中所述多个第二电极之间设有架桥部，其位于所述遮蔽层的导通部的正上方，用以桥接所述多个第二电级。
  6. 如权利要求4的触控面板，其中所述绝缘层的多个穿孔填充有导电材料，使所述多个第一电极通过所述导通部相互导通。
  7. 权利要求4的触控面板，其中所述遮蔽层的遮蔽部及导通部之间具有一间隔，所述间隔围绕所述导通部。
  8. 如权利要求4的触控面板，其中所述触控金属层上设有一保护层，其以绝缘材料所制。
  9. 如权利要求4的触控面板，其中所述遮蔽层为金属材料所制，其设于一显示面板的封装层上。
  10. 一种显示装置，包括显示面板及设于所述显示面板上的触控面板，所述触控面板包括：
    一遮蔽层，设于所述有机发光二极管显示面板的封装层上，所述遮蔽层包括遮蔽部及被遮蔽部围绕的导通部;
    一绝缘层，设于所述遮蔽层上，所述绝缘层设有多个穿孔，所述多个穿孔位于所述导通部上；及
    一触控金属层，设于所述绝缘层上，所述触控金属层包括沿第一方向排列的多个第一电极，及沿第二方向排列的多个第二电极，所述多个第一电极通过所述绝缘层的多个穿孔与所述遮蔽层的导通部相互导通，所述遮蔽层的遮蔽部通过所述触控金属层接地。
  11. 如权利要求10的显示装置，其中所述多个第一电极相互间隔设置，所述多个第二电极相互间隔设置，其中所述多个第二电极之间设有架桥部，其位于所述遮蔽层的导通部的正上方，用以桥接所述多个第二电级。
  12. 如权利要求10的显示装置，其中所述绝缘层的多个穿孔填充有导电材料，使所述多个第一电极通过所述导通部相互导通。
  13. 如权利要求10的显示装置，其中所述遮蔽层的遮蔽部及导通部之间具有一间隔，所述间隔围绕所述导通部。
PCT/CN2019/073136 2018-12-04 2019-01-25 触控面板及显示装置 WO2020113803A1 (zh)

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