WO2021179393A1 - 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
WO2021179393A1
WO2021179393A1 PCT/CN2020/084241 CN2020084241W WO2021179393A1 WO 2021179393 A1 WO2021179393 A1 WO 2021179393A1 CN 2020084241 W CN2020084241 W CN 2020084241W WO 2021179393 A1 WO2021179393 A1 WO 2021179393A1
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WO
WIPO (PCT)
Prior art keywords
touch panel
electrode
substrate
touch
equal
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PCT/CN2020/084241
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English (en)
French (fr)
Inventor
林丹
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 US16/956,591 priority Critical patent/US11402960B2/en
Publication of WO2021179393A1 publication Critical patent/WO2021179393A1/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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • 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
    • H10K59/122—Pixel-defining structures or layers, e.g. banks
    • 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
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/351—Thickness
    • 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
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • This application relates to the field of display technology, and in particular to a touch panel and a display device.
  • the touch layer is generally prepared directly on the display panel to make the entire product itself lighter and thinner. While realizing the touch function, it also Can make the display panel easier to fold.
  • this method of directly preparing the touch layer on the display panel also has certain shortcomings. Because the touch layer is made of metal, it increases the reflected light to the environment to a certain extent, and reduces the contrast and color saturation. .
  • the flexible display device itself has the characteristics of wide viewing angle, it is not conducive to the confidentiality of information, and it is also easy to be detrimental to the audience with privacy needs. Therefore, how to ensure that the touch function is realized while ensuring that the contrast and color saturation of the display panel are not affected, and the confidentiality of private information under a wide viewing angle is a matter of concern.
  • the embodiments of the present application provide a touch panel and a display device, which can reduce the reflection of the touch electrode to ambient light.
  • An embodiment of the present application provides a touch panel, including:
  • Touch electrodes located on the substrate are Touch electrodes located on the substrate.
  • a light-shielding layer located on the side of the touch electrode away from the substrate;
  • the light shielding layer is provided corresponding to the touch electrode, and the light shielding layer is used to shield the reflected light of the touch electrode.
  • the width of the orthographic projection of the light shielding layer on the substrate is greater than the width of the orthographic projection of the touch electrode on the substrate.
  • the orthographic projection width of the touch electrode on the substrate is greater than 0 ⁇ m and less than or equal to 5 ⁇ m.
  • the material of the light shielding layer is one of black organic photoresist and black organic resin.
  • the touch panel further includes: an array substrate and a light emitting device located between the substrate and the touch electrode;
  • the light emitting device is located on a side of the array substrate away from the substrate;
  • the array substrate includes a pixel defining layer provided on one side of the light emitting device, the light emitting device includes a pixel unit located in a groove of the pixel defining layer, and the touch electrode is formed on the pixel defining layer.
  • the orthographic projection is located between the two corresponding pixel units.
  • the width of the orthographic projection of the light shielding layer on the pixel definition layer is less than or equal to the first distance between the two corresponding pixel units.
  • the first pitch is greater than or equal to 15 ⁇ m and less than or equal to 25 ⁇ m.
  • the first pitch is equal to 20 ⁇ m.
  • the width of the orthographic projection of the light shielding layer on the pixel definition layer is less than or equal to 25 ⁇ m.
  • the width of the orthographic projection of the light shielding layer on the pixel definition layer is less than or equal to 20 ⁇ m.
  • the touch electrode includes:
  • the first electrode is located on one side of the substrate
  • a second electrode located on a side of the first electrode away from the substrate, and the light shielding layer is provided corresponding to the second electrode and covers the second electrode;
  • the first insulating layer is located between the first electrode and the second electrode.
  • the width of the orthographic projection of the light-shielding layer on the substrate is greater than the width of the orthographic projection of the second electrode on the substrate, and the orthographic projection of the second electrode on the pixel definition layer is located at two corresponding positions. Between the pixel units.
  • the orthographic projection width of the second electrode on the substrate is greater than 0 ⁇ m and less than or equal to 5 ⁇ m.
  • the orthographic projection width of the second electrode on the substrate is equal to 3 ⁇ m.
  • the touch panel further includes an encapsulation layer located on a side of the light emitting device away from the substrate, and a buffer layer located between the light emitting device and the touch electrode .
  • the thickness of the buffer layer is greater than or equal to 0.3 ⁇ m and less than or equal to 60 ⁇ m.
  • the thickness of the buffer layer is greater than or equal to 2 ⁇ m and less than or equal to 5 ⁇ m.
  • the thickness of the buffer layer is equal to 3 ⁇ m.
  • the touch panel further includes a second insulating layer on a side of the light shielding layer away from the substrate.
  • the present application also provides a display device including the touch panel.
  • the touch panel and display device provided by the present application include: a substrate; a touch electrode located on the substrate; and, the touch electrode is located far away from the A light-shielding layer on one side of the substrate; wherein the light-shielding layer is provided corresponding to the touch electrode, and the light-shielding layer is used to shield the reflected light of the touch electrode.
  • the display device adopting the touch panel can reduce the reflection of the touch electrode to the ambient light, while ensuring that the display device realizes the touch function, it ensures that the contrast and color saturation of the display device are not affected, and the display device is not affected. Confidentiality of private information from the perspective.
  • FIGS. 1A to 1B are schematic diagrams of the structure of a touch panel provided by an embodiment of the application.
  • FIG. 1C is a schematic diagram of the structure of touch electrodes of the touch panel provided in FIG. 1B.
  • FIGS. 1A to 1B are schematic diagrams of the structure of a touch panel provided by an embodiment of the application.
  • the touch panel 100 includes:
  • the light shielding layer 103 is provided corresponding to the touch electrode 102, and the light shielding layer 103 is used to shield the reflected light of the touch electrode 102.
  • the orthographic projection width L1 of the light shielding layer 103 on the substrate 101 is greater than the orthographic projection width L2 of the touch electrode 102 on the substrate 101. Further, the orthographic projection width L2 of the touch electrode 102 on the substrate 101 is greater than 0 ⁇ m and less than or equal to 5 ⁇ m, that is, 0 ⁇ m ⁇ L2 ⁇ 5 ⁇ m.
  • the light shielding layer 103 is made of one of black organic photoresist and black organic resin.
  • the touch panel 100 is further provided with a second insulating layer 104 on the side of the light shielding layer 103 away from the substrate.
  • the second insulating layer 104 can prevent metal oxidation of the touch electrode 102, and can planarize the touch electrode 102 and the light shielding layer 103.
  • the touch panel 100 further includes: an array substrate 201 and a light emitting device 202 located between the substrate 101 and the touch electrode 102;
  • the light emitting device 202 is located on the side of the array substrate 201 away from the substrate 101;
  • the array substrate 201 includes a pixel defining layer 203 disposed on one side of the light emitting device 202, the light emitting device 202 includes a pixel unit 204 located in a groove of the pixel defining layer 203, and the touch electrode 102 is positioned at The orthographic projection on the pixel defining layer 203 is located between the two corresponding pixel units 204 to prevent the touch electrode 102 and the light shielding layer 103 from blocking the light emitted by the light emitting device 202.
  • the width L1 of the orthographic projection of the light shielding layer 103 on the pixel definition layer 203 is less than or equal to the first distance L3 between the two corresponding pixel units 204, that is, L1 ⁇ L3.
  • the first pitch L3 is greater than or equal to 15 ⁇ m and less than or equal to 25 ⁇ m, that is 15 ⁇ m ⁇ L3 ⁇ 25 ⁇ m.
  • the width L1 of the orthographic projection of the light shielding layer 103 on the pixel definition layer 203 is less than or equal to 25 ⁇ m, that is, L1 ⁇ 25 ⁇ m.
  • the first distance L3 is equal to 20 ⁇ m
  • the array substrate 201 includes thin film transistors distributed in an array; the light emitting device 202 includes an anode 2021 electrically connected to one of the source and drain of the thin film transistor, and is located at the anode 2021 away from the substrate
  • the light-emitting layer 2023 can make the pixel unit 204 emit red light, green light, and blue light according to different preparation materials.
  • the touch panel 100 further includes an encapsulation layer 205 located on the side of the light emitting device 202 away from the substrate 101, and located on the light emitting device 202 and the touch electrode
  • the buffer layer 206 between 100 is to isolate the light emitting device 202 and the touch electrode 102 and prevent the light emitting device 202 from being corroded by water and oxygen.
  • the encapsulation layer 205 is a multilayer organic film layer and an inorganic film layer alternately stacked to prevent the light emitting device 202 from being corroded by water and oxygen; the buffer layer 206 can prevent the light emitting device 202 from preparing the touch electrode 102 Damage occurred during the process.
  • the viewing angle ⁇ of the touch panel 100 is smaller, and the visibility of the touch panel 100 on the side will also be It decreases accordingly.
  • the touch panel 100 is viewed outside the viewing angle ⁇ , the light received by the pixel unit 204 in the viewer’s viewing angle will be larger than the viewer viewing the touch in the viewing angle ⁇ .
  • the time of the panel 100 is small, that is, the brightness of the touch panel 100 viewed at this time is low. The greater the angle deviating from the viewing angle ⁇ , the lower the brightness of the touch panel 100 that can be viewed, and the less information can be viewed from the touch panel 100, which can be achieved The purpose of preventing peeping.
  • the thicker the thickness of the buffer layer 206 it will also cause the following two effects: one is to increase the thickness of the touch panel 100, which will have an impact on the realization of a thinner and lighter design of the touch panel 100; The thicker the thickness of the buffer layer 206 is, the longer the transmission path of the light emitted by the light emitting device 202 in the touch panel 100 will be, and the more light will be lost in the touch panel 100.
  • the thickness of the buffer layer 206 is greater than or equal to 0.3 ⁇ m and less than or equal to 60 ⁇ m; further The thickness of the buffer layer 206 is greater than or equal to 2 ⁇ m and less than or equal to 5 ⁇ m; furthermore, the thickness of the buffer layer 206 is equal to 3 ⁇ m.
  • the touch electrode 102 includes:
  • the first electrode 1021 is located on one side of the substrate 101;
  • the second electrode 1022 is located on the side of the first electrode 1021 away from the substrate 101, and the light shielding layer 103 is provided corresponding to the second electrode 1022 and covers the second electrode 1022; and,
  • the first insulating layer 1023 is located between the first electrode 1021 and the second electrode 1022 to isolate the first electrode 1021 and the second electrode 1022;
  • the orthographic projection width L1 of the light shielding layer 103 on the substrate 101 is greater than the orthographic projection width L2 of the second electrode 1022 on the substrate 101, and the second electrode 1022 is on the pixel definition layer 203.
  • the orthographic projection on is located between the two corresponding pixel units 204.
  • the orthographic projection width L2 of the second electrode 1022 on the substrate 101 is greater than 0 ⁇ m and less than or equal to 5 ⁇ m, that is, 0 ⁇ m ⁇ L2 ⁇ 5 ⁇ m, L1>L2.
  • the first electrode 1021 is a grid structure or a conductive bridge; the second electrode 1022 is a grid structure.
  • the first electrode 1021 is a conductive bridge
  • FIG. 1C is a structural diagram of the touch electrode of the touch panel provided in FIG. 1B.
  • the second electrode 1022 also includes a sensing electrode 1022a and a driving The electrode 1022b, the sensing electrode 1022a and the driving electrode 1022b are all grid-like structures; one of the sensing electrode 1022a and the driving electrode 1022b is bridged by the first electrode 1021.
  • the first electrode 1021 and the second electrode 1022 are made of low-reflectivity metal materials.
  • the present application also provides a display device.
  • the display device includes the touch panel 100 to reduce the reflection of the touch electrode 102 to ambient light, so as to ensure that the display device realizes the touch function while ensuring The contrast and color saturation of the display device are not affected, ensuring the confidentiality of private information under a wide viewing angle.
  • the touch panel 100 includes: a substrate 101; a touch electrode 102 located on the substrate 101; The light-shielding layer 103 on one side of the substrate 101; wherein the light-shielding layer 103 is provided corresponding to the touch electrode 102, and the light-shielding layer 103 is used to shield the reflected light of the touch electrode 102.
  • the display device adopting the touch panel 100 can reduce the reflection of the touch electrode 102 to ambient light, while ensuring that the display device realizes the touch function, while ensuring that the contrast and color saturation of the display device are not affected. Influence, to ensure the confidentiality of private information under a wide viewing angle.

Abstract

一种触控面板（100）及显示装置，所述触控面板（100）包括：衬底（101）、触控电极（102）以及对应所述触控电极（102）设置的遮光层（103）；遮光层（103）用于遮挡触控电极（102）的反射光。采用所述触控面板（100）的显示装置可降低触控电极（102）对环境光的反射，在保证所述显示装置实现触控功能的同时，保证显示装置的对比度和色彩饱和度不受影响，保证广视角下私密信息的保密。

Description

触控面板及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种触控面板及显示装置。
 背景技术
与液晶显示装置相比，运用有机发光二极管制成的柔性显示装置，因具有高对比度、高色饱和度、广视角、轻薄及可实现弯曲，折叠等优势，成为现今显示技术领域研究的热点之一。在柔性显示装置中，为更好的兼顾触控功能和产品厚度的问题，一般会将触控层直接制备在显示面板上，以使整个产品本身更加轻薄，在实现触控功能的同时，也可使显示面板更易于折叠。但这种在显示面板上直接制备触控层的方法也存在一定的不足，由于触控层采用金属制成，所以在一定程度上增大了对环境的反射光，降低了对比度和色彩饱和度。此外，由于柔性显示装置本身具有广视角的特点，不利于信息的保密，也易对有隐私需求的受众不利。因此，如何在保证实现触控功能的同时，保证显示面板的对比度和色彩饱和度不受影响，保证广视角下私密信息的保密是备受关注的问题。
 技术问题
本申请实施例提供一种触控面板及显示装置，可以降低触控电极对环境光的反射。
 技术解决方案
本申请实施例提供一种触控面板，包括：
衬底；
位于所述衬底上的触控电极；以及，
位于所述触控电极远离所述衬底一侧的遮光层；
其中，所述遮光层对应所述触控电极设置，所述遮光层用于遮挡所述触控电极的反射光。
在一些实施例中，所述遮光层在所述衬底的正投影宽度大于所述触控电极在所述衬底的正投影宽度。
在所述的触控面板中，所述触控电极在所述衬底的正投影宽度为大于0μm且小于或等于5μm。
在所述的触控面板中，所述遮光层的制备材料为黑色有机光阻、黑色有机树脂的其中一种。
在所述的触控面板中，所述触控面板还包括：位于所述衬底与所述触控电极之间的阵列基板及发光器件；
所述发光器件位于所述阵列基板远离所述衬底的一侧；
所述阵列基板包括设置在所述发光器件一侧的像素定义层，所述发光器件包括位于所述像素定义层的凹槽内的像素单元，所述触控电极在所述像素定义层上的正投影位于对应的两所述像素单元之间。
在所述的触控面板中，所述遮光层在所述像素定义层上的正投影的宽度小于或等于对应的两所述像素单元之间的第一间距。
在所述的触控面板中，所述第一间距大于或等于15μm且小于或等于25μm。
在所述的触控面板中，所述第一间距等于20μm。
在所述的触控面板中，述遮光层在所述像素定义层上的正投影的宽度小于或等于25μm。
在所述的触控面板中，所述遮光层在所述像素定义层上的正投影的宽度小于或等于20μm。
在所述的触控面板中，所述触控电极包括：
第一电极，位于所述衬底的一侧；
第二电极，位于所述第一电极远离所述衬底的一侧，所述遮光层对应所述第二电极设置且覆盖所述第二电极；以及，
第一绝缘层，位于所述第一电极与所述第二电极之间。
其中，所述遮光层在所述衬底的正投影宽度大于所述第二电极在所述衬底的正投影宽度，所述第二电极在所述像素定义层上的正投影位于对应的两所述像素单元之间。
在所述的触控面板中，所述第二电极在所述衬底的正投影宽度大于0μm且小于或等于5μm。
在所述的触控面板中，所述第二电极在所述衬底的正投影宽度等于3μm。
在所述的触控面板中，所述触控面板还包括位于所述发光器件远离所述衬底的一侧的封装层，以及位于所述发光器件及所述触控电极之间的缓冲层。
在所述的触控面板中，所述缓冲层的厚度大于或等于0.3μm且小于或等于60μm。
在所述的触控面板中，所述缓冲层的厚度大于或等于2μm且小于或等于5μm。
在所述的触控面板中，所述缓冲层的厚度等于3μm。
在所述的触控面板中，所述触控面板还包括位于所述遮光层远离所述衬底的一侧的第二绝缘层。
本申请还提供一种显示装置，所述显示装置包括所述的触控面板。
 有益效果
相较于现有技术，本申请提供的触控面板及显示装置，所述触控面板包括：衬底；位于所述衬底上的触控电极；以及，位于所述触控电极远离所述衬底一侧的遮光层；其中，所述遮光层对应所述触控电极设置，所述遮光层用于遮挡所述触控电极的反射光。采用所述触控面板的所述显示装置可以降低触控电极对环境光的反射，在保证所述显示装置实现触控功能的同时，保证显示装置的对比度和色彩饱和度不受影响，保证广视角下私密信息的保密。
 附图说明
图1A~图1B为本申请的实施例提供的触控面板的结构示意图；
图1C为图1B中提供的触控面板的触控电极的结构示意图。
 本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
具体的，请参阅图1A~图1B，其为本申请实施例提供的触控面板的结构示意图，所述触控面板100包括：
衬底101；
位于所述衬底101上的触控电极102；以及，
位于所述触控电极102远离所述衬底101一侧的遮光层103；
其中，所述遮光层103对应所述触控电极102设置，所述遮光层103用于遮挡所述触控电极102的反射光。
所述遮光层103在所述衬底101的正投影宽度L1大于所述触控电极102在所述衬底101的正投影宽度L2。进一步地，所述触控电极102在所述衬底101的正投影宽度L2为大于0μm且小于或等于5μm，即0μm<L2≤5μm。
所述遮光层103的制备材料为黑色有机光阻、黑色有机树脂的其中一种。
此外，为防止所述触控电极102被水氧侵蚀，出现氧化现象，所述触控面板100在所述遮光层103远离所述衬底的一侧还设置有第二绝缘层104。所述第二绝缘层104可以防止所述触控电极102出现金属氧化，并可以平坦化所述触控电极102及所述遮光层103。
请继续参阅图1A~图1B，所述触控面板100还包括：位于所述衬底101与所述触控电极102之间的阵列基板201及发光器件202；
所述发光器件202位于所述阵列基板201远离所述衬底101的一侧；
所述阵列基板201包括设置在所述发光器件202一侧的像素定义层203，所述发光器件202包括位于所述像素定义层203的凹槽内的像素单元204，所述触控电极102在所述像素定义层203上的正投影位于对应的两所述像素单元204之间，以防止所述触控电极102及所述遮光层103遮挡所述发光器件202发出的光。
进一步地，所述遮光层103在所述像素定义层203上的正投影的宽度L1小于或等于对应的两所述像素单元204之间的第一间距L3，即L1≤L3。
由于所述触控面板100的开口率与所述第一间距L3成反比，为不影响所述触控面板100的开口率，所述第一间距L3大于或等于15μm且小于或等于25μm，即15μm≤L3≤25μm。进一步地，所述遮光层103在所述像素定义层203上的正投影的宽度L1小于或等于25μm，即L1≤25μm。更进一步地，所述第一间距L3等于20μm，所述遮光层103在所述像素定义层203上的正投影的宽度L1小于或等于20μm，即L3=20μm；L1≤20μm。
所述阵列基板201包括阵列分布的薄膜晶体管；所述发光器件202包括与所述薄膜晶体管的源极和漏极的其中之一电性连接阳极2021，以及位于所述阳极2021远离所述衬底101一侧的阴极2022；发光层2023位于所述阳极2021与所述阴极2022之间。所述发光层2023依据制备材料的不同可以使所述像素单元204发出红色光、绿色光、蓝色光。
请继续参阅图1A~图1B，所述触控面板100还包括位于所述发光器件202远离所述衬底101的一侧的封装层205，以及位于所述发光器件202及所述触控电极100之间的缓冲层206，以隔离所述发光器件202及所述触控电极102，并防止所述发光器件202被水氧侵蚀。所述封装层205为交替堆叠的多层有机膜层和无机膜层，防止所述发光器件202被水氧侵蚀；所述缓冲层206可防止所述发光器件202在制备所述触控电极102的过程中出现损坏。
由于所述缓冲层206的厚度越厚，所述遮光层103的宽度越宽，所述触控面板100的可视视角α就越小，则所述触控面板100在侧面的可见性也会随之减小。当位于所述可视视角α之外观看所述触控面板100时，观看者视角内接收到的所述像素单元204的光线会较观看者位于所述可视视角α内观看所述触控面板100时的少，即此时观看到的所述触控面板100的亮度较低。当偏离所述可视视角α的角度越大，所观看到的所述触控面板100的亮度就越低，从所述触控面板100上观看到的信息就越少，以此就可达到防止偷窥的目的。
但所述缓冲层206的厚度越厚，也会造成以下两方面的影响：一是会增加所述触控面板100的厚度，会对所述触控面板100实现轻薄化设计产生影响；二是所述缓冲层206的厚度越厚，所述发光器件202所发出的光在所述触控面板100内的传输路径就越长，造成光在所述触控面板100的损失也就越多。因此，为降低对所述触控面板100及所述发光器件202所发出的光的影响并利于轻薄化设计，所述缓冲层206的厚度为大于或等于0.3μm且小于或等于60μm；进一步地，所述缓冲层206的厚度为大于或等于2μm且小于或等于5μm；更进一步地，所述缓冲层206的厚度为等于3μm。
请继续参阅图1B，所述触控电极102包括：
第一电极1021，位于所述衬底101的一侧；
第二电极1022，位于所述第一电极1021远离所述衬底101的一侧，所述遮光层103对应所述第二电极1022设置且覆盖所述第二电极1022；以及，
第一绝缘层1023，位于所述第一电极1021与所述第二电极1022之间，以隔离所述第一电极1021和所述第二电极1022；
其中，所述遮光层103在所述衬底101的正投影宽度L1大于所述第二电极1022在所述衬底101的正投影宽度L2，所述第二电极1022在所述像素定义层203上的正投影位于对应的两所述像素单元204之间。具体地，所述第二电极1022在所述衬底101的正投影宽度L2为大于0μm且小于或等于5μm，即0μm<L2≤5μm，L1>L2。进一步地，所述第二电极1022在所述衬底101的正投影宽度L2为3μm，即L2=3μm；L1>3μm。
所述第一电极1021为网格结构或导电桥；所述第二电极1022为网格结构。具体地，当所述第一电极1021为导电桥时，请参阅图1C，其为图1B提供的触控面板的触控电极的结构示意图，所述第二电极1022还包括感应电极1022a和驱动电极1022b，所述感应电极1022a和所述驱动电极1022b均为网格状结构；所述感应电极1022a和所述驱动电极1022b的其中一者通过所述第一电极1021跨接。
所述第一电极1021及所述第二电极1022的制备材料为低反射率金属材料。
本申请还提供一种显示装置，所述显示装置包括所述的触控面板100，以降低所述触控电极102对环境光的反射，在保证所述显示装置实现触控功能的同时，保证所述显示装置的对比度和色彩饱和度不受影响，保证广视角下私密信息的保密。
本申请实施例提供的触控面板100及显示装置，所述触控面板100包括：衬底101；位于所述衬底101上的触控电极102；以及，位于所述触控电极102远离所述衬底101一侧的遮光层103；其中，所述遮光层103对应所述触控电极102设置，所述遮光层103用于遮挡所述触控电极102的反射光。采用所述触控面板100的所述显示装置可以所述降低触控电极102对环境光的反射，在保证所述显示装置实现触控功能的同时，保证显示装置的对比度和色彩饱和度不受影响，保证广视角下私密信息的保密。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的触控面板及显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (19)

  1. 一种触控面板，其中，包括：
    衬底；
    位于所述衬底上的触控电极；以及，
    位于所述触控电极远离所述衬底一侧的遮光层；
    其中，所述遮光层对应所述触控电极设置，所述遮光层用于遮挡所述触控电极的反射光。
  2. 根据权利要求1所述的触控面板，其中，所述遮光层在所述衬底的正投影宽度大于所述触控电极在所述衬底的正投影宽度。
  3. 根据权利要求2所述的触控面板，其中，所述触控电极在所述衬底的正投影宽度为大于0μm且小于或等于5μm。
  4. 根据权利要求1所述的触控面板，其中，所述遮光层的制备材料为黑色有机光阻、黑色有机树脂的其中一种。
  5. 根据权利要求2所述的触控面板，其中，还包括：位于所述衬底与所述触控电极之间的阵列基板及发光器件；
    所述发光器件位于所述阵列基板远离所述衬底的一侧；
    所述阵列基板包括设置在所述发光器件一侧的像素定义层，所述发光器件包括位于所述像素定义层的凹槽内的像素单元，所述触控电极在所述像素定义层上的正投影位于对应的两所述像素单元之间。
  6. 根据权利要求5所述的触控面板，其中，所述遮光层在所述像素定义层上的正投影的宽度小于或等于对应的两所述像素单元之间的第一间距。
  7. 根据权利要求6所述的触控面板，其中，所述第一间距大于或等于15μm且小于或等于25μm。
  8. 根据权利要求7所述的触控面板，其中，所述第一间距等于20μm。
  9. 根据权利要求6所述的触控面板，其中，所述遮光层在所述像素定义层上的正投影的宽度小于或等于25μm。
  10. 根据权利要求9所述的触控面板，其中，所述遮光层在所述像素定义层上的正投影的宽度小于或等于20μm。
  11. 根据权利要求5所述的触控面板，其中，所述触控电极包括：
    第一电极，位于所述衬底的一侧；
    第二电极，位于所述第一电极远离所述衬底的一侧，所述遮光层对应所述第二电极设置且覆盖所述第二电极；以及，
    第一绝缘层，位于所述第一电极与所述第二电极之间；
    其中，所述遮光层在所述衬底的正投影宽度大于所述第二电极在所述衬底的正投影宽度，所述第二电极在所述像素定义层上的正投影位于对应的两所述像素单元之间。
  12. 根据权利要求11所述的触控面板，其中，所述第二电极在所述衬底的正投影宽度大于0μm且小于或等于5μm。
  13. 根据权利要求12所述的触控面板，其中，所述第二电极在所述衬底的正投影宽度等于3μm。
  14. 根据权利要求5所述的触控面板，其中，所述触控面板还包括位于所述发光器件远离所述衬底的一侧的封装层，以及位于所述发光器件及所述触控电极之间的缓冲层。
  15. 根据权利要求14所述的触控面板，其中，所述缓冲层的厚度大于或等于0.3μm且小于或等于60μm。
  16. 根据权利要求15所述的触控面板，其中，所述缓冲层的厚度大于或等于2μm且小于或等于5μm。
  17. 根据权利要求16所述的触控面板，其中，所述缓冲层的厚度等于3μm。
  18. 根据权利要求1所述的触控面板，其中，所述触控面板还包括位于所述遮光层远离所述衬底的一侧的第二绝缘层。
  19. 一种显示装置，其中，包括如权利要求1所述的触控面板。
PCT/CN2020/084241 2020-03-11 2020-04-10 触控面板及显示装置 WO2021179393A1 (zh)

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CN110262682A (zh) * 2019-04-26 2019-09-20 昆山工研院新型平板显示技术中心有限公司 触控显示面板和显示装置
CN110828698A (zh) * 2019-11-21 2020-02-21 昆山工研院新型平板显示技术中心有限公司 显示面板和显示装置

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