WO2021253489A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2021253489A1
WO2021253489A1 PCT/CN2020/099304 CN2020099304W WO2021253489A1 WO 2021253489 A1 WO2021253489 A1 WO 2021253489A1 CN 2020099304 W CN2020099304 W CN 2020099304W WO 2021253489 A1 WO2021253489 A1 WO 2021253489A1
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WO
WIPO (PCT)
Prior art keywords
layer
fingerprint recognition
touch
pixel
units
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Application number
PCT/CN2020/099304
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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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Filing date
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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 EP20941196.6A priority Critical patent/EP4167056A4/en
Priority to US17/047,680 priority patent/US11908228B2/en
Priority to JP2021510870A priority patent/JP7267402B2/ja
Priority to KR1020217014677A priority patent/KR102543021B1/ko
Publication of WO2021253489A1 publication Critical patent/WO2021253489A1/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

Definitions

  • the present invention relates to the technical field of touch control, in particular to a display panel and a display device.
  • plug-in that is, the touch sensor is designed as a separate module and placed between the cover and the display;
  • the touch sensor is designed on the display screen, and then attached to the bottom of the cover together with the display screen.
  • DOT direct on-cell touch
  • the embodiments of the present invention provide a display panel and a display device, which are used to solve the problem of difficulty in installing a fingerprint recognition module on an in-cell touch screen in the prior art, and after the setting, the fingerprint recognition effect is poor and the fingerprint recognition accuracy is relatively low.
  • Technical issues such as low, affecting pixel luminescence.
  • the present invention provides a display panel, including:
  • a display substrate including a plurality of pixel units
  • a touch control layer and a fingerprint recognition layer provided on the display substrate
  • the touch layer includes at least one touch unit
  • the fingerprint recognition layer includes at least one main fingerprint recognition unit, and each of the main fingerprint recognition units includes N SFPS sub-fingerprint recognition units corresponding to N pixel pixel units, and N SFPS and N pixel are positive integers.
  • the touch control layer and the fingerprint recognition layer are provided in the same layer.
  • the distance between adjacent touch units is 5 mm to 20 mm, and the distance between adjacent sub-fingerprint recognition units is 50 um to 150 um.
  • the difference between SFPS ⁇ P SFPS is less than 25um, where P pixel is the distance between adjacent pixel units, and P SFPS is the distance between adjacent sub-fingerprint identification units.
  • the display panel further includes:
  • the first insulating layer is arranged on the thin film encapsulation layer
  • the first metal layer is disposed on the first insulating layer
  • the second insulating layer is disposed on the first metal layer and has at least one through hole
  • a second metal layer disposed on the second insulating layer and connected to the first metal layer through the through hole;
  • the third insulating layer is disposed on the second metal layer.
  • the first metal layer is a touch sensing electrode or a touch drive electrode in the touch layer, and is a fingerprint recognition bridge metal strip in the fingerprint recognition layer.
  • the two metal layers are fingerprint recognition sensing electrodes or fingerprint recognition driving electrodes in the fingerprint recognition layer, and touch bridge metal bars or dummy electrodes in the touch layer, and the fingerprint recognition bridge metal bars are connected to all adjacent ones.
  • the fingerprint recognition sensing electrode or the fingerprint recognition driving electrode, the touch bridge metal strip is connected to the adjacent touch sensing electrode or the touch driving electrode, and the dummy electrode covers the pixel unit.
  • the shape of the fingerprint recognition bridge metal wire is an isometric enlarged pattern or a linear shape of the corresponding contour of the pixel unit.
  • the first metal layer is a non-transparent material, including at least one of gold, silver, copper, lithium, sodium, potassium, magnesium, aluminum, and zinc. It is arranged between the adjacent pixel units.
  • the second metal layer is a transparent conductive material, and includes a stacked first indium tin oxide layer, a silver layer, and a second indium tin oxide layer, the first indium tin oxide layer and the The thickness of the second indium tin oxide layer is 5 nm-20 nm, and the thickness of the silver layer is 5 nm-30 nm.
  • the present invention also provides a display device, including a display panel, the display panel including: a display substrate, the display substrate including a plurality of pixel units; and
  • a touch control layer and a fingerprint recognition layer provided on the display substrate
  • the touch layer includes at least one touch unit
  • the fingerprint recognition layer includes at least one main fingerprint recognition unit, and each of the main fingerprint recognition units includes N SFPS sub-fingerprint recognition units corresponding to N pixel pixel units, and N SFPS and N pixel are positive integers.
  • the touch control layer and the fingerprint recognition layer are provided in the same layer.
  • the distance between adjacent touch units is 5 mm to 20 mm, and the distance between adjacent sub-fingerprint recognition units is 50 um to 150 um.
  • the difference between SFPS ⁇ P SFPS is less than 25um, where P pixel is the distance between adjacent pixel units, and P SFPS is the distance between adjacent sub-fingerprint identification units.
  • the display panel further includes:
  • the first insulating layer is arranged on the thin film encapsulation layer
  • the first metal layer is disposed on the first insulating layer
  • the second insulating layer is disposed on the first metal layer and has at least one through hole
  • a second metal layer disposed on the second insulating layer and connected to the first metal layer through the through hole;
  • the third insulating layer is disposed on the second metal layer.
  • the first metal layer is a touch sensing electrode or a touch drive electrode in the touch layer, and is a fingerprint recognition bridge metal strip in the fingerprint recognition layer.
  • the two metal layers are fingerprint recognition sensing electrodes or fingerprint recognition driving electrodes in the fingerprint recognition layer, and touch bridge metal bars or dummy electrodes in the touch layer, and the fingerprint recognition bridge metal bars are connected to all adjacent ones.
  • the fingerprint recognition sensing electrode or the fingerprint recognition driving electrode, the touch bridge metal strip is connected to the adjacent touch sensing electrode or the touch driving electrode, and the dummy electrode covers the pixel unit.
  • the shape of the fingerprint recognition bridge metal wire is an isometric enlarged pattern or a linear shape of the corresponding contour of the pixel unit.
  • the first metal layer is a non-transparent material, including at least one of gold, silver, copper, lithium, sodium, potassium, magnesium, aluminum, and zinc. It is arranged between the adjacent pixel units.
  • the second metal layer is a transparent conductive material, and includes a stacked first indium tin oxide layer, a silver layer, and a second indium tin oxide layer, the first indium tin oxide layer and the The thickness of the second indium tin oxide layer is 5 nm-20 nm, and the thickness of the silver layer is 5 nm-30 nm.
  • the present invention redesigns the pattern of the fingerprint recognition unit by arranging the fingerprint recognition layer and the touch layer in the same layer and redesigning the pattern of the fingerprint recognition unit for the difference in the spacing between adjacent pixel units in the display panel of different resolutions, so that There are an integer number of pixel units and an integer number of sub-fingerprint recognition units in the same main fingerprint recognition unit, and the distance between adjacent sub-fingerprint recognition units is in the optimal recognition range, thereby reducing the distance between adjacent pixel units.
  • changing the shape of the bridging metal wire reduces the impact on the light emission of the pixel unit, and increases the screen-to-body ratio of the light-emitting area. This is a great help for the embedded integration of the fingerprint recognition sensor in the display device. The user experience has also been greatly improved.
  • FIG. 1 is a schematic diagram of a display panel in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of a touch layer in an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the structure of a fingerprint recognition layer in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the structure of the second metal layer in an embodiment of the present invention.
  • Figure 5 is a top view of a fingerprint recognition layer in an embodiment of the present invention.
  • FIG. 6 is a top view of the touch layer in an embodiment of the present invention.
  • Fig. 7 is a schematic diagram of a main fingerprint identification unit in an embodiment of the present invention.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, “plurality” means two or more than two, unless specifically defined otherwise.
  • fingerprint recognition is assembled as a separate module, which affects the proportion of the front display and the internal space of the whole machine.
  • embodiments of the present invention provide a display panel and a display device. Detailed descriptions are given below.
  • an embodiment of the present invention provides a display panel, as shown in FIG. 1, which is a schematic diagram of the display panel in an embodiment of the present invention.
  • the display panel includes: a display substrate 100 including a plurality of pixel units 103; and
  • the touch control layer 101 and the fingerprint recognition layer 102 provided on the display substrate;
  • the touch layer 101 includes at least one touch unit
  • the fingerprint recognition layer 102 includes at least one main fingerprint recognition unit, and each of the main fingerprint recognition units includes N SFPS sub-fingerprint recognition units corresponding to N pixel pixel units 103, and N SFPS and N pixel are positive integers.
  • the present invention redesigns the pattern of the fingerprint recognition unit according to the difference in the distance between adjacent pixel units 103 in the display panel of different resolutions, so that there are an integer number of pixels in the same main fingerprint recognition unit.
  • Unit 103 and an integer number of sub-fingerprint recognition units the distance between adjacent sub-fingerprint recognition units is in the optimal recognition range, thereby reducing the limitation of the embedded fingerprint recognition unit due to the difference in the distance between adjacent pixel units 103.
  • the embedded integration of the recognition sensor in the display device greatly helps, and the user experience is also greatly improved.
  • the touch layer 101 and the fingerprint recognition layer 102 are provided in the same layer.
  • the display panel is divided into a fingerprint recognition area and a touch area.
  • the fingerprint recognition area and the touch layer 102 are located on the short sides of the display panel, and are respectively located on two opposite short sides.
  • FIG. 2 is a schematic diagram of the structure of the touch layer in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of the structure of the fingerprint recognition layer in an embodiment of the present invention.
  • the display panel further includes: a thin film encapsulation layer 200, which is disposed on the display substrate 100; a first insulating layer 301, which is disposed on the thin film encapsulation layer 200; and a first metal layer 302, which is disposed on the first insulating layer.
  • the second insulating layer 303 is disposed on the first metal layer 302 and is provided with at least one through hole; the second metal layer 304 is disposed on the second insulating layer 303 and passes through the through hole Connected to the first metal layer; and a third insulating layer 305 disposed on the second metal layer 304.
  • the first metal layer 302 is a touch sensing electrode 302a or a touch drive electrode 302b in the touch layer 101, a fingerprint recognition bridge metal strip 302c in the fingerprint recognition layer 102, and the second metal layer 304 in the fingerprint recognition layer 102 is a fingerprint recognition sensing electrode 304c or a fingerprint recognition driving electrode 304d
  • in the touch layer 101 is a touch bridge metal strip 304a or a dummy electrode 304b
  • the fingerprint recognition bridge metal strip 302c Connect the adjacent fingerprint recognition sensing electrode 304c or fingerprint recognition driving electrode 304d
  • the touch bridge metal strip 304a connects the adjacent touch sensing electrode 302a or the touch driving electrode 302b
  • the dummy electrode 304b covers the pixel unit 103.
  • the touch layer 101 and the fingerprint recognition layer 102 are both single-layer bridge structures, that is, two adjacent touch sensing electrodes 302a or touch driving electrodes 302b, and two adjacent touch sensing electrodes 302a or 302b.
  • the fingerprint recognition sensing electrode 304c or the fingerprint recognition driving electrode 304d are respectively arranged in the same layer, and the touch bridge metal strip 304a conducts the two adjacent touch sensors through the through holes of the second insulating layer 303
  • the electrode 302a or the touch driving electrode 302b, the fingerprint recognition bridging metal strip 302c conducts the two adjacent fingerprint recognition sensing electrodes 304c or the fingerprint recognition through the through hole of the second insulating layer 303
  • the electrodes 304d are driven so that the touch sensing electrodes 302a or 302b, the fingerprint recognition sensing electrodes 304c, or the fingerprint recognition driving electrodes 304d, which are distributed at intervals, respectively form a complete path.
  • the first metal layer 302 and the second metal layer 304 are insulated and protected, and the touch sensing electrode 302a and the touch driving electrode 302b are prevented from conducting, and the fingerprint recognition sensing electrode 304c is The fingerprint recognition drive electrode 304d is turned on.
  • the size of the dummy electrode 304b is larger than that of the pixel unit 103 and covers the pixel unit 103 for the purpose of keeping the optical effect of the fingerprint recognition area consistent with the optical effect of the touch area.
  • the electrodes in the fingerprint recognition layer 102 adopt a mutual capacitance mode, and do not restrict the first direction and the second direction. Therefore, the positions and directions of the fingerprint recognition sensing electrode 304c and the fingerprint recognition driving electrode 304d in each figure can be interchanged.
  • a single-layer bridging method is preferably adopted, and the fingerprint recognition sensing electrode 304c and the fingerprint recognition driving electrode 304d are arranged on the same layer, but it is not limited to a single-layer bridging method.
  • a double-layer structure can also be adopted, that is, the fingerprint recognition sensing electrode 304c and the fingerprint recognition driving electrode 304d are arranged in different layers, and the touch layer 101 is the same.
  • the first metal layer 302 is a non-transparent material, including at least one of gold, silver, copper, lithium, sodium, potassium, magnesium, aluminum, and zinc. It is arranged between the adjacent pixel units 103 to prevent non-transparent materials from blocking the light emission of the pixel units 103.
  • FIG. 4 is a schematic diagram of the structure of the second metal layer in an embodiment of the present invention.
  • the second metal layer 304 is a transparent conductive material, and includes a laminated first indium tin oxide layer 3041, a silver layer 3042, and a second indium tin oxide layer 3043.
  • the first indium tin oxide layer 3041 and the The thickness of the second indium tin oxide layer 3043 is 5 nm-20 nm, and the thickness of the silver layer 3042 is 5 nm-30 nm.
  • FIG. 5 is a top view of the fingerprint recognition layer in an embodiment of the present invention.
  • the display panel includes a display area and a non-display area.
  • the fingerprint recognition layer 102 is arranged close to the edge of the display panel, a part of the peripheral leads of the fingerprint recognition layer 102 will be located in the display area and a part in the display area.
  • the outer leads of the display area are made of the transparent second metal layer 304, and the width of the leads is 5um ⁇ 30um.
  • the integrated circuit chip of the fingerprint recognition layer 102 (Integrated Circuit, IC) is directly bound to the display panel, or a chip on film (Chip The On Film (COF) method binds the integrated circuit chip of the fingerprint recognition layer 102 on a flexible printed circuit (FPC).
  • IC Integrated Circuit
  • COF Chip The On Film
  • FIG. 6 is a top view of the touch layer in an embodiment of the present invention.
  • the vertical electrodes are defined as the touch sensing electrodes 302a
  • the horizontal electrodes are defined as the touch driving electrodes 302b.
  • Both the touch sensing electrodes 302a and the touch driving electrodes 302b are defined by the touch sensing electrodes 302a.
  • the first metal layer 302 is formed. Since the first metal layer 302 does not transmit light, the traces of the touch sensing electrode 302a and the touch driving electrode 302b are all arranged between the adjacent pixel units 103 In order to reduce the influence on the luminescence of the display area.
  • the patterns of the touch control unit and the sub-fingerprint recognition unit are diamond-shaped, the distance between adjacent touch units is 5mm-20mm, and the distance between adjacent sub-fingerprint recognition units is 50um ⁇ 150um.
  • the distance between adjacent pixel units 103 is usually within 100um, because the distance between adjacent touch units is much larger than the distance between adjacent pixel units 103 and The preferred range is larger, and the distance between adjacent sub-fingerprint recognition units is smaller and the preferred range is smaller, so the first metal layer 302 and the second metal layer 304 are in the touch layer 101 Both can be arranged between the adjacent pixel units 103, and if the second metal layer 304 is also arranged between the adjacent pixel units 103 in the fingerprint identification unit 102, it does not satisfy all requirements.
  • the preferred range of the sub-fingerprint identification unit causes defects such as reduced fingerprint identification effect.
  • FIG. 7 is a schematic diagram of the main fingerprint identification unit in an embodiment of the present invention.
  • the second metal layer 304 is disposed between the adjacent pixel units 103, and the second metal layer 304 passing through the pixel units 103 is as small as possible. Since the first metal layer 301 does not transmit light, in order to prevent the first metal layer 302 from blocking the light emission of the pixel unit 103, the fingerprint recognition bridging metal layer 302c is in addition to the fingerprint recognition layer 102
  • the linear direct connection also includes an isometric enlarged pattern designed according to the corresponding outline of the pixel unit 103.
  • the pixel unit 103 includes a circular green pixel unit and a special-shaped one with four extensions.
  • the fingerprint recognition bridging metal strip 302c is designed in the shape of the pixel unit 103, for example, it is designed to be a larger circle, a special shape or a linear shape with four extensions, Conduction is performed from the periphery of the pixel unit 103 through.
  • the pattern that defines the lateral RX conduction is the fingerprint recognition drive electrode 304d
  • the longitudinal TX conduction electrode is the fingerprint recognition sensing electrode 304c.
  • the fingerprint recognition bridging metal strip 302c may also have the fingerprint recognition bridging metal strip 302c that is longitudinally conductive.
  • an embodiment of the present invention also provides a display device, and the display device includes the display panel as described in the foregoing embodiment.
  • the performance of the display device is further improved.
  • each embodiment has its own focus. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.
  • each of the above units or structures can be implemented as independent entities, or can be combined arbitrarily, and implemented as the same or several entities.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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  • Electroluminescent Light Sources (AREA)

Abstract

一种显示面板及显示装置，该显示面板包括显示基板（100），所述显示基板（100）包括多个像素单元（103）；及设置在所述显示基板（100）上的触控层（101）和指纹识别层（102）；其中，所述触控层（101）包括至少一个触控单元；所述指纹识别层（102）中包括至少一个主指纹识别单元，每个所述主指纹识别单元包括NS FPS个子指纹识别单元、对应N pixel个所述像素单元，NS FPS、N pixel为正整数。

Description

显示面板及显示装置 技术领域
本发明涉及触控技术领域，具体涉及一种显示面板及显示装置。
 背景技术
目前触摸屏应用方式主流的有外挂式和内嵌式（Direct on-cell touch, DOT）两种：外挂式即触控传感器设计为单独的模块，并放置在盖板和显示屏之间；内嵌式即将触控传感器设计到显示屏上，然后与显示屏一起贴于盖板下方。同时，随着显示技术的发展，手机作为重要的沟通工具在日常的生活中必不可少，相关技术中，指纹识别作为单独的模组放置在非显示区域，例如在正面下边框、侧面或者背面，以上几种方案指纹识别均作为单独的模组进行装配。
如何将指纹识别模组设置到内嵌式触控屏上，成为本技术的难点，以及将所述指纹识别模组设置到所述内嵌式触控屏上之后，出现的高分辨率产品的相邻的像素单元之间的间距过小，这样会导致相邻指纹识别单元之间的间距也过小，但是相邻所述指纹识别单元之间的间距过小会导致感应量太低，无法穿透更后的盖板，识别效果较差；同理相邻所述指纹识别单元之间的间距过大会导致指纹识别分辨率太低，指纹识别精度较低。同时直线金属桥也不适用用珍珠类型的像素单元，对像素单元的发光造成影响等技术缺陷，急需得以解决。
 技术问题
现有技术中存在难以将指纹识别模组设置到内嵌式触控屏上以及设置之后出现指纹识别效果较差、指纹识别精度较低、影响像素发光等技术问题。
 技术解决方案
本发明实施例提供一种显示面板及显示装置，用于解决现有技术中存在难以将指纹识别模组设置到内嵌式触控屏上以及设置之后出现指纹识别效果较差、指纹识别精度较低、影响像素发光等技术问题。
为解决上述问题，第一方面，本发明提供一种显示面板，包括：
显示基板，所述显示基板包括多个像素单元；及
设置在所述显示基板上的触控层和指纹识别层；
其中，所述触控层包括至少一个触控单元；
所述指纹识别层中包括至少一个主指纹识别单元，每个所述主指纹识别单元包括N SFPS个子指纹识别单元、对应N pixel个所述像素单元，N SFPS、N pixel为正整数。
在本发明的一些实施例中，所述触控层与所述指纹识别层同层设置。
在本发明的一些实施例中，相邻所述触控单元之间的间距为5mm~20mm，相邻所述子指纹识别单元之间的间距为50um~150um。
在本发明的一些实施例中，相邻所述主指纹识别单元之间的间距P UFPS满足P UFPS=N pixel×P pixel或P UFPS=N SFPS×P SFPS，且N pixel×P pixel与N SFPS×P SFPS之间的差值小于25um，其中P pixel为相邻所述像素单元之间的间距，P SFPS为相邻所述子指纹识别单元之间的间距。
在本发明的一些实施例中，所述显示面板还包括：
薄膜封装层，设置于所述显示基板上；
第一绝缘层，设置于所述薄膜封装层上；
第一金属层，设置于所述第一绝缘层上；
第二绝缘层，设置于所述第一金属层上且开设有至少一个通孔；
第二金属层，设置于所述第二绝缘层上且通过所述通孔与所述第一金属层相连接；及
第三绝缘层，设置于所述第二金属层上。
在本发明的一些实施例中，所述第一金属层在所述触控层中为触控感应电极或触控驱动电极，在所述指纹识别层中为指纹识别桥接金属条，所述第二金属层在所述指纹识别层中为指纹识别感应电极或指纹识别驱动电极，在所述触控层中为触控桥接金属条或虚设电极，所述指纹识别桥接金属条连接相邻的所述指纹识别感应电极或指纹识别驱动电极，所述触控桥接金属条连接相邻的所述触控感应电极或所述触控驱动电极，所述虚设电极覆盖于所述像素单元上。
在本发明的一些实施例中，所述指纹识别桥接金属线的形状为相对应的所述像素单元轮廓的等距放大图案或直线形。
在本发明的一些实施例中，所述第一金属层为非透明材料，包括金、银、铜、锂、钠、钾、镁、铝和锌中的至少一种，所述第一金属层设置于相邻的所述像素单元之间。
在本发明的一些实施例中，所述第二金属层为透明导电材料，包括层叠的第一氧化铟锡层、银层和第二氧化铟锡层，所述第一氧化铟锡层和所述第二氧化铟锡层的厚度为5nm~20nm，所述银层的厚度为5nm~30nm。
第二方面，本发明还提供一种显示装置，包括显示面板，所述显示面板包括：显示基板，所述显示基板包括多个像素单元；及
设置在所述显示基板上的触控层和指纹识别层；
其中，所述触控层包括至少一个触控单元；
所述指纹识别层中包括至少一个主指纹识别单元，每个所述主指纹识别单元包括N SFPS个子指纹识别单元、对应N pixel个所述像素单元，N SFPS、N pixel为正整数。
在本发明的一些实施例中，所述触控层与所述指纹识别层同层设置。
在本发明的一些实施例中，相邻所述触控单元之间的间距为5mm~20mm，相邻所述子指纹识别单元之间的间距为50um~150um。
在本发明的一些实施例中，相邻所述主指纹识别单元之间的间距P UFPS满足P UFPS=N pixel×P pixel或P UFPS=N SFPS×P SFPS，且N pixel×P pixel与N SFPS×P SFPS之间的差值小于25um，其中P pixel为相邻所述像素单元之间的间距，P SFPS为相邻所述子指纹识别单元之间的间距。
在本发明的一些实施例中，所述显示面板还包括：
薄膜封装层，设置于所述显示基板上；
第一绝缘层，设置于所述薄膜封装层上；
第一金属层，设置于所述第一绝缘层上；
第二绝缘层，设置于所述第一金属层上且开设有至少一个通孔；
第二金属层，设置于所述第二绝缘层上且通过所述通孔与所述第一金属层相连接；及
第三绝缘层，设置于所述第二金属层上。
在本发明的一些实施例中，所述第一金属层在所述触控层中为触控感应电极或触控驱动电极，在所述指纹识别层中为指纹识别桥接金属条，所述第二金属层在所述指纹识别层中为指纹识别感应电极或指纹识别驱动电极，在所述触控层中为触控桥接金属条或虚设电极，所述指纹识别桥接金属条连接相邻的所述指纹识别感应电极或指纹识别驱动电极，所述触控桥接金属条连接相邻的所述触控感应电极或所述触控驱动电极，所述虚设电极覆盖于所述像素单元上。
在本发明的一些实施例中，所述指纹识别桥接金属线的形状为相对应的所述像素单元轮廓的等距放大图案或直线形。
在本发明的一些实施例中，所述第一金属层为非透明材料，包括金、银、铜、锂、钠、钾、镁、铝和锌中的至少一种，所述第一金属层设置于相邻的所述像素单元之间。
在本发明的一些实施例中，所述第二金属层为透明导电材料，包括层叠的第一氧化铟锡层、银层和第二氧化铟锡层，所述第一氧化铟锡层和所述第二氧化铟锡层的厚度为5nm~20nm，所述银层的厚度为5nm~30nm。
 有益效果
相较于现有的显示面板，本发明通过将指纹识别层和触控层同层设置以及针对不同分辨率的显示面板中相邻像素单元之间间距不同均重新设计指纹识别单元的图案，使得同一个主指纹识别单元中存在整数个像素单元和整数个子指纹识别单元，相邻所述子指纹识别单元之间的间距位于最佳识别范围，从而减小相邻像素单元之间间距不同对嵌入式指纹识别单元的限制，同时，改变桥接金属线的形状，减少对像素单元发光的影响，增大了发光区域的屏占比，对于指纹识别传感器在显示装置内以嵌入式集成大有助力，用户体验也得以大大提升。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，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为本发明一个实施例中显示面板的示意图；
图2为本发明一个实施例中触控层的结构示意图；
图3为本发明一个实施例中指纹识别层的结构示意图；
图4为本发明一个实施例中第二金属层的结构示意图；
图5为本发明一个实施例中指纹识别层的俯视图；
图6为本发明一个实施例中触控层的俯视图；及
图7为本发明一个实施例中主指纹识别单元的示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动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。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
现有技术中指纹识别均作为单独的模组进行装配，影响正面显示占比及整机内部空间。
基于此，本发明实施例提供一种显示面板及显示装置。以下分别进行详细说明。
首先，本发明实施例提供一种显示面板，如图1所示，图1为本发明一个实施例中显示面板的示意图。所述显示面板包括：显示基板100，所述显示基板包括多个像素单元103；及
设置在所述显示基板上的触控层101和指纹识别层102；
其中，所述触控层101包括至少一个触控单元；
所述指纹识别层102中包括至少一个主指纹识别单元，每个所述主指纹识别单元包括N SFPS个子指纹识别单元、对应N pixel个所述像素单元103，N SFPS、N pixel为正整数。
相较于现有的显示面板，本发明通过针对不同分辨率的显示面板中相邻像素单元103之间间距不同均重新设计指纹识别单元的图案，使得同一个主指纹识别单元中存在整数个像素单元103和整数个子指纹识别单元，相邻所述子指纹识别单元之间的间距位于最佳识别范围，从而减小相邻像素单元103之间间距不同对嵌入式指纹识别单元的限制，对于指纹识别传感器在显示装置内以嵌入式集成大有助力，用户体验也得以大大提升。
在本发明实施例中，所述触控层101与所述指纹识别层102同层设置。所述显示面板被分为指纹识别区域与触控区域，指纹识别区域与所述触控层102的出现位置均位于所述显示面板的短侧边，且分别位于相对的两短侧边。
如图2和图3所示，图2为本发明一个实施例中触控层的结构示意图，图3为本发明一个实施例中指纹识别层的结构示意图。所述显示面板还包括：薄膜封装层200，设置于所述显示基板100上；第一绝缘层301，设置于所述薄膜封装层200上；第一金属层302，设置于所述第一绝缘层301上；第二绝缘层303，设置于所述第一金属层302上且开设有至少一个通孔；第二金属层304，设置于所述第二绝缘层303上且通过所述通孔与所述第一金属层相连接；及第三绝缘层305，设置于所述第二金属层304上。
所述第一金属层302在所述触控层101中为触控感应电极302a或触控驱动电极302b，在所述指纹识别层102中为指纹识别桥接金属条302c，所述第二金属层304在所述指纹识别层102中为指纹识别感应电极304c或指纹识别驱动电极304d，在所述触控层101中为触控桥接金属条304a或虚设电极304b，所述指纹识别桥接金属条302c连接相邻的所述指纹识别感应电极304c或指纹识别驱动电极304d，所述触控桥接金属条304a连接相邻的所述触控感应电极302a或所述触控驱动电极302b，所述虚设电极304b覆盖于所述像素单元103上。
所述触控层101和所述指纹识别层102均为单层架桥结构，即相邻的两个所述触控感应电极302a或所述触控驱动电极302b、相邻的两个所述指纹识别感应电极304c或所述指纹识别驱动电极304d分别同层设置，由所述触控桥接金属条304a通过所述第二绝缘层303的通孔导通相邻的两个所述触控感应电极302a或所述触控驱动电极302b、由所述指纹识别桥接金属条302c通过所述第二绝缘层303的通孔导通相邻的两个所述指纹识别感应电极304c或所述指纹识别驱动电极304d，从而使得间隔分布的所述触控感应电极302a或所述触控驱动电极302b、所述指纹识别感应电极304c或所述指纹识别驱动电极304d分别形成完整的通路。其中，在所述第一金属层302和所述第二金属层304之间和两侧，分别设置有所述第一绝缘层301、所述第二绝缘层303和所述第三绝缘层305，对所述第一金属层302和所述第二金属层304进行绝缘保护，并防止所述触控感应电极302a与所述触控驱动电极302b导通、所述指纹识别感应电极304c与所述指纹识别驱动电极304d导通。所述虚设电极304b其大尺寸比所述像素单元103要大，覆盖在所述像素单元103上，目的使指纹识别区域的光学效果与触控区域的光学效果保持一致。
所述指纹识别层102中的电极采用互容的方式，且并未对第一方向和第二方向上做出约束。因此，各个附图中所述指纹识别感应电极304c和所述指纹识别驱动电极304d的位置和方向可以互换。可以理解的是，本发明实施例中优选的采用单层架桥的方式，将所述指纹识别感应电极304c和所述指纹识别驱动电极304d同层设置，但并不局限于单层架桥的方式，还可以采用双层结构，即所述指纹识别感应电极304c和所述指纹识别驱动电极304d设置在不同层中，所述触控层101同理。
在本发明实施例中，所述第一金属层302为非透明材料，包括金、银、铜、锂、钠、钾、镁、铝和锌中的至少一种，所述第一金属层302设置于相邻的所述像素单元103之间，以避免非透明材料对所述像素单元103的发光进行遮挡。
如图4所示，图4为本发明一个实施例中第二金属层的结构示意图。所述第二金属层304为透明导电材料，包括层叠的第一氧化铟锡层3041、银层3042和第二氧化铟锡层3043，优选的，所述第一氧化铟锡层3041和所述第二氧化铟锡层3043的厚度为5nm~20nm，所述银层3042的厚度为5nm~30nm。
如图5所示，图5为本发明一个实施例中指纹识别层的俯视图。所述显示面板包括显示区和非显示区，当所述指纹识别层102设置的靠近所述显示面板边缘时，所述指纹识别层102的外围引线将一部分位于所述显示区、一部分位于所述非显示区，所述显示区的外围引线采用透明的所述第二金属层304构成，所述引线的宽度为5um~30um，其布线方式采用阶梯状布线，将所述指纹识别层102的外围引线所占面积最小化，用于减少面板显示区域内指纹识别外围引线对触控图案的影响，而在所述非显示区的外围引线采用非透明的所述第一金属层302构成，以降低所述引线的布线电阻。本实施例中将所述指纹识别层102的集成电路芯片（Integrated Circuit，IC）直接绑定在所述显示面板上，也可以采用覆晶薄膜（Chip On Film，COF）方式将所述指纹识别层102的集成电路芯片绑定在柔性电路板（Flexible Printed Circuit ，FPC）上。
如图6所示，图6为本发明一个实施例中触控层的俯视图。在本实施例中，定义纵向的电极为所述触控感应电极302a、横向的电极为所述触控驱动电极302b，所述触控感应电极302a和所述触控驱动电极302b均由所述第一金属层302构成，由于所述第一金属层302不透光，故所述触控感应电极302a和所述触控驱动电极302b的走线均布设于相邻的所述像素单元103之间，以减少对所述显示区发光的影响。
优选的，所述触控单元和所述子指纹识别单元的图案呈菱形，相邻所述触控单元之间的间距为5mm~20mm，相邻所述子指纹识别单元之间的间距为50um~150um。而在高分辨率产品中，相邻所述像素单元103之间的间距通常在100um以内，由于相邻所述触控单元之间的间距远大于相邻所述像素单元103之间的间距且优选范围较大，而相邻所述子指纹识别单元之间的间距较小且优选范围较小，故所述第一金属层302和所述第二金属层304在所述触控层101中均可以设置于相邻的所述像素单元103之间，而所述第二金属层304若在所述指纹识别单元102中也设置于相邻的所述像素单元103之间，则不满足所述子指纹识别单元的优选范围，造成指纹识别效果下降等缺陷。
为了平衡好指纹识别效果好和对像素单元103的遮挡少，本发明实施例中提出一种所述主指纹识别单元的设置方式。如图7所示，图7为本发明一个实施例中主指纹识别单元的示意图。相邻所述主指纹识别单元之间的间距P UFPS满足P UFPS=N pixel×P pixel或P UFPS=N SFPS×P SFPS，且N pixel×P pixel与N SFPS×P SFPS之间的差值小于25um，其中P pixel为相邻所述像素单元103之间的间距，P SFPS为相邻所述子指纹识别单元之间的间距。即通过在一个所述主指纹识别单元中设置不同个数的所述像素单元103和所述子指纹识别单元，实现在不影响指纹识别效果和不能完全避免交叉重叠的情况下，尽可能多的所述第二金属层304设置于相邻的所述像素单元103之间，穿过所述像素单元103的所述第二金属层304尽可能的少。而由于所述第一金属层301不透光，为了避免所述第一金属层302对所述像素单元103的发光进行遮挡，所述指纹识别桥接金属层302c在所述指纹识别层102中除了直线型直接连接，还包括根据所对应的所述像素单元103轮廓设计成等距放大图案，如图中，所述像素单元103包括圆形的绿色像素单元和带有四个延伸部的异形的红色像素单元和蓝色像素单元，所述指纹识别桥接金属条302c以所述像素单元103的形状进行设计，例如设计成更大的圆形、同样带有四个延伸部的异形或直线形，从所述像素单元103外围通过进行导通。如图7中，定义横向RX导通的图案为所述指纹识别驱动电极304d，纵向TX导通的电极为所述指纹识别感应电极304c，在同一个所述主指纹识别单元中存在横向导通的所述指纹识别桥接金属条302c，也可以存在纵向导通的所述指纹识别桥接金属条302c。
为了更好实施本发明实施例中显示面板，在所述显示面板的基础之上，本发明实施例中还提供一种显示装置，所述显示装置包括如上述实施例中所述的显示面板。通过采用如上实施例中描述的显示面板，进一步提升了该显示装置的性能。
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。具体实施时，以上各个单元或结构可以作为独立的实体来实现，也可以进行任意组合，作为同一或若干个实体来实现，以上各个单元或结构的具体实施可参见前面的方法实施例，在此不再赘述。
以上对本发明实施例进行了详细介绍，本文中应用了具体个例对本发明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发明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发明各实施例的技术方案的范围。

Claims (18)

  1. 一种显示面板，包括：
    显示基板，所述显示基板包括多个像素单元；及
    设置在所述显示基板上的触控层和指纹识别层；
    其中，所述触控层包括至少一个触控单元；
    所述指纹识别层中包括至少一个主指纹识别单元，每个所述主指纹识别单元包括N SFPS个子指纹识别单元、对应N pixel个所述像素单元，N SFPS、N pixel为正整数。
  2. 根据权利要求1所述的显示面板，其中，所述触控层与所述指纹识别层同层设置。
  3. 根据权利要求1所述的显示面板，其中，相邻所述触控单元之间的间距为5mm~20mm，相邻所述子指纹识别单元之间的间距为50um~150um。
  4. 根据权利要求1所述的显示面板，其中，相邻所述主指纹识别单元之间的间距P UFPS满足P UFPS=N pixel×P pixel或P UFPS=N SFPS×P SFPS，且N pixel×P pixel与N SFPS×P SFPS之间的差值小于25um，其中P pixel为相邻所述像素单元之间的间距，P SFPS为相邻所述子指纹识别单元之间的间距。
  5. 根据权利要求1所述的显示面板，其中，所述显示面板还包括：
    薄膜封装层，设置于所述显示基板上；
    第一绝缘层，设置于所述薄膜封装层上；
    第一金属层，设置于所述第一绝缘层上；
    第二绝缘层，设置于所述第一金属层上且开设有至少一个通孔；
    第二金属层，设置于所述第二绝缘层上且通过所述通孔与所述第一金属层相连接；及
    第三绝缘层，设置于所述第二金属层上。
  6. 根据权利要求5所述的显示面板，其中，所述第一金属层在所述触控层中为触控感应电极或触控驱动电极，在所述指纹识别层中为指纹识别桥接金属条，所述第二金属层在所述指纹识别层中为指纹识别感应电极或指纹识别驱动电极，在所述触控层中为触控桥接金属条或虚设电极，所述指纹识别桥接金属条连接相邻的所述指纹识别感应电极或指纹识别驱动电极，所述触控桥接金属条连接相邻的所述触控感应电极或所述触控驱动电极，所述虚设电极覆盖于所述像素单元上。
  7. 根据权利要求6所述的显示面板，其中，所述指纹识别桥接金属线的形状为相对应的所述像素单元轮廓的等距放大图案或直线形。
  8. 根据权利要求5所述的显示面板，其中，所述第一金属层为非透明材料，包括金、银、铜、锂、钠、钾、镁、铝和锌中的至少一种，所述第一金属层设置于相邻的所述像素单元之间。
  9. 根据权利要求5所述的显示面板，其中，所述第二金属层为透明导电材料，包括层叠的第一氧化铟锡层、银层和第二氧化铟锡层，所述第一氧化铟锡层和所述第二氧化铟锡层的厚度为5nm~20nm，所述银层的厚度为5nm~30nm。
  10. 一种显示装置，包括显示面板，所述显示面板包括：显示基板，所述显示基板包括多个像素单元；及
    设置在所述显示基板上的触控层和指纹识别层；
    其中，所述触控层包括至少一个触控单元；
    所述指纹识别层中包括至少一个主指纹识别单元，每个所述主指纹识别单元包括N SFPS个子指纹识别单元、对应N pixel个所述像素单元，N SFPS、N pixel为正整数。
  11. 根据权利要求10所述的显示装置，其中，所述触控层与所述指纹识别层同层设置。
  12. 根据权利要求10所述的显示装置，其中，相邻所述触控单元之间的间距为5mm~20mm，相邻所述子指纹识别单元之间的间距为50um~150um。
  13. 根据权利要求10所述的显示装置，其中，相邻所述主指纹识别单元之间的间距P UFPS满足P UFPS=N pixel×P pixel或P UFPS=N SFPS×P SFPS，且N pixel×P pixel与N SFPS×P SFPS之间的差值小于25um，其中P pixel为相邻所述像素单元之间的间距，P SFPS为相邻所述子指纹识别单元之间的间距。
  14. 根据权利要求10所述的显示装置，其中，所述显示装置还包括：
    薄膜封装层，设置于所述显示基板上；
    第一绝缘层，设置于所述薄膜封装层上；
    第一金属层，设置于所述第一绝缘层上；
    第二绝缘层，设置于所述第一金属层上且开设有至少一个通孔；
    第二金属层，设置于所述第二绝缘层上且通过所述通孔与所述第一金属层相连接；及
    第三绝缘层，设置于所述第二金属层上。
  15. 根据权利要求14所述的显示装置，其中，所述第一金属层在所述触控层中为触控感应电极或触控驱动电极，在所述指纹识别层中为指纹识别桥接金属条，所述第二金属层在所述指纹识别层中为指纹识别感应电极或指纹识别驱动电极，在所述触控层中为触控桥接金属条或虚设电极，所述指纹识别桥接金属条连接相邻的所述指纹识别感应电极或指纹识别驱动电极，所述触控桥接金属条连接相邻的所述触控感应电极或所述触控驱动电极，所述虚设电极覆盖于所述像素单元上。
  16. 根据权利要求15所述的显示装置，其中，所述指纹识别桥接金属线的形状为相对应的所述像素单元轮廓的等距放大图案或直线形。
  17. 根据权利要求14所述的显示装置，其中，所述第一金属层为非透明材料，包括金、银、铜、锂、钠、钾、镁、铝和锌中的至少一种，所述第一金属层设置于相邻的所述像素单元之间。
  18. 根据权利要求14所述的显示装置，其中，所述第二金属层为透明导电材料，包括层叠的第一氧化铟锡层、银层和第二氧化铟锡层，所述第一氧化铟锡层和所述第二氧化铟锡层的厚度为5nm~20nm，所述银层的厚度为5nm~30nm。
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