WO2021223305A1 - 触摸屏及显示装置 - Google Patents

触摸屏及显示装置 Download PDF

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Publication number
WO2021223305A1
WO2021223305A1 PCT/CN2020/097813 CN2020097813W WO2021223305A1 WO 2021223305 A1 WO2021223305 A1 WO 2021223305A1 CN 2020097813 W CN2020097813 W CN 2020097813W WO 2021223305 A1 WO2021223305 A1 WO 2021223305A1
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WIPO (PCT)
Prior art keywords
area
touch
fingerprint
layer
metal
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PCT/CN2020/097813
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English (en)
French (fr)
Inventor
李波
戴其兵
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 US17/054,303 priority Critical patent/US20220157075A1/en
Publication of WO2021223305A1 publication Critical patent/WO2021223305A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing

Definitions

  • This application relates to the field of display technology, and in particular to a touch screen and a display device.
  • the touch screen has many advantages such as fast response speed, accurate positioning, support for multi-touch, long service life, etc., and is widely used in various devices, such as mobile phones, PCs, and attendance machines.
  • Fingerprint recognition has been widely used due to its good security and ease of use. However, most of the current fingerprint identification devices are fingerprint modules that work independently.
  • the mobile phone is a device that uses fingerprint recognition the most.
  • the fingerprint recognition module on the mobile phone includes the following types:
  • the first type is the front independent button type, this design is convenient for users to operate, but affects the screen ratio of the mobile phone.
  • the second type is the button type placed on the back of the mobile phone. This design requires the finger to fumble on the back of the mobile phone because the user cannot see where the fingerprint is unlocked, which affects the user experience.
  • the third category is the technology trend of in-screen fingerprint recognition in recent years.
  • the in-screen fingerprint recognition currently on the market is mainly based on the optical or ultrasonic fingerprint module attached to the bottom of the screen.
  • a touch screen includes a fingerprint recognition module 101, a touch module 102 and a cover 103.
  • the touch screen is very convenient for users to operate, and at the same time achieves a high screen-to-body ratio and a full screen.
  • the thickness of the front panel module of the mobile phone is increased, which affects the mechanical design of the whole machine and increases the production cost of the product.
  • the purpose of the present invention is to provide a touch screen and a display device to solve the technical problem of the large thickness of the fingerprint recognition touch screen in the existing screen, which affects the design of the whole machine and increases the production cost.
  • the present invention provides a touch screen, including a fingerprint area and a touch area, the fingerprint area is provided with a fingerprint recognition module, the touch area is provided with a touch module, the touch module and The fingerprint identification module is arranged on the same layer.
  • the touch screen includes a metal layer, an insulating layer and a transparent conductive layer, the metal layer is distributed in the fingerprint area and the touch area, and the metal layer includes a plurality of first metal traces and is perpendicular to the The second metal trace of the first metal trace; the insulation layer is provided on the metal layer of the fingerprint area and the touch area; the transparent conductive layer is provided on the insulation layer, and the transparent The conductive layer includes a first transparent electrode and a second transparent electrode perpendicular to the first transparent electrode;
  • the first transparent electrode is the fingerprint sensing electrode of the fingerprint recognition module
  • the second transparent electrode is the fingerprint driving electrode of the fingerprint recognition module
  • the fingerprint driving electrode passes through the fingerprint sensor.
  • the insulating layer is connected to the metal layer;
  • the first metal trace is the touch sensing electrode of the touch module
  • the second metal trace is the touch driving electrode of the touch module
  • the touch The control driving electrode is connected to the transparent conductive layer through the insulating layer.
  • the fingerprint area includes: the insulating layer is provided with a corresponding first through hole at a position corresponding to the first metal wiring; the insulating layer is at a position corresponding to the second metal wiring Corresponding second through holes are opened; and the transparent conductive layer is provided with corresponding third through holes and fourth through holes at positions corresponding to the second metal traces; wherein, the fingerprint drive electrode fills the The first through hole and the second through hole cover the insulating layer between the first through hole and the second through hole.
  • the touch area includes: the insulating layer is provided with corresponding fifth through holes and sixth through holes at positions corresponding to the first metal traces; A plurality of dummy cells are provided at a position corresponding to a metal trace; wherein the transparent conductive layer fills the fifth through hole and the sixth through hole, and covers the fifth through hole and the sixth through hole. Insulation layer between holes.
  • the transparent conductive layer includes a fingerprint sensing electrode area, a first connection area, a fingerprint driving electrode area, and a second connection area; two adjacent fingerprint sensing electrode areas are connected through the first connection area; the fingerprint The driving electrode area and the fingerprint sensing electrode area are arranged in the same layer; the second connection area and the first connection area are alternately arranged, and two adjacent fingerprint driving electrode areas are connected through the second connection area.
  • the metal layer includes a touch sensing electrode area, a third connection area, a touch drive electrode area, and a fourth connection area; two adjacent touch sensing electrode areas are connected through the third connection area;
  • the touch drive electrode area and the touch sensing electrode area are arranged in the same layer;
  • the fourth connection area and the third connection area are alternately arranged, and two adjacent touch drive electrode areas are connected through the fourth connection area. ⁇ Area connection.
  • the touch screen further includes a substrate, a thin film transistor layer, a light emitting layer, and a thin film packaging layer; the thin film transistor layer is provided on the substrate; the light emitting layer is provided on the thin film transistor layer; The thin film packaging layer is provided on the light emitting layer; wherein the metal layer is provided on the thin film packaging layer.
  • the light-emitting layer has a plurality of sub-pixels; in the touch area, a dummy unit covers one sub-pixel.
  • the metal layer includes a composite structure in which a titanium layer and an aluminum layer are overlapped; and the transparent conductive layer includes a composite structure in which an indium tin oxide layer and a silver layer are overlapped.
  • the present invention also provides a display device, including the touch screen described above.
  • the technical effect of the present invention is that the present invention provides a touch screen and a display device.
  • the touch module and the fingerprint recognition module in the same layer, the integrated integration of fingerprint recognition and touch functions is realized, which is compared with the existing
  • the fingerprint identification device eliminates the process of attaching the fingerprint identification module to the outside, which reduces the cost of the product, and at the same time reduces the thickness of the product, which effectively improves the quality and function of the product.
  • the signal connection of the two layers of materials is realized by connecting the transparent conductive layer and the metal layer, and part of the metal layer serves as a bridge structure at the same time, connecting adjacent transparent electrodes together to form fingerprints arranged in one direction.
  • the special structure design of the driving electrode, the metal layer and the transparent conductive layer can effectively reduce the channel impedance and increase the sensing signal strength; by setting the virtual unit in the touch area, the structure of the touch area and the fingerprint area are consistent, ensuring that the touch area and the fingerprint area are consistent.
  • the optical consistency of the fingerprint area makes the optical effect of each position of the touch screen consistent, ensuring the overall optical effect of the touch screen.
  • Fig. 1 is a schematic diagram of the structure of an existing touch screen.
  • FIG. 2 is a schematic diagram of the structure of the touch screen according to this embodiment.
  • FIG. 3 is a schematic diagram of the structure of the fingerprint identification module according to this embodiment.
  • FIG. 4 is a schematic diagram of the structure of the touch module according to this embodiment.
  • FIG. 5 is a top view of the fingerprint area according to this embodiment.
  • FIG. 6 is a top view of the touch area according to this embodiment.
  • Fig. 7 is an enlarged view of unit A in Fig. 6.
  • Fig. 8 is an enlarged view of unit B in Fig. 5.
  • the display device may be a mobile phone, or may be a computer, a television, a smart wearable device, etc., which is not particularly limited in this embodiment.
  • this embodiment provides a touch screen 100, which includes a fingerprint area 111 and a touch area 112.
  • the fingerprint area 111 is provided with a fingerprint recognition module 10
  • the touch area 112 is provided with a touch module 20.
  • the module 20 and the fingerprint identification module 10 are arranged on the same layer.
  • the fingerprint area 111 is used to identify the user's fingerprint and unlock the display device
  • the touch area 112 is used to implement the touch function of the display device.
  • the touch screen 110 includes a substrate 1, a thin film transistor layer 2, a light emitting layer 3, a thin film encapsulation layer 4, a metal layer 5, an insulating layer 6 and a transparent conductive layer 7 in order from bottom to top.
  • the substrate 1 is an ordinary glass substrate; the thin film transistor layer 2 includes a plurality of thin film transistors to drive the touch screen 100 to work; the light emitting layer 3 has a light emitting material to emit light, so that the touch screen 100 realizes display; the thin film encapsulation layer 4 is used to protect the light emitting layer 3. In order to prevent external water, oxygen, etc. from invading the interior of the touch screen 100 and damaging the light-emitting drive circuit.
  • the metal layer 5 is distributed in the fingerprint area 111 and the touch area 112, and is patterned.
  • the metal layer 5 includes a plurality of first metal traces 51 and a second metal trace 52 perpendicular to the first metal trace 51.
  • the metal layer 5 includes a composite structure in which a titanium layer and an aluminum layer are overlapped, and has good electrical conductivity.
  • the insulating layer 6 is patterned on the metal layer 5 of the fingerprint area 111 and the touch area 112.
  • the transparent conductive layer 7 is disposed on the insulating layer 6, and the transparent conductive layer 7 includes first transparent electrodes 71 arranged in a first direction and second transparent electrodes 72 perpendicular to the first transparent electrodes 71 arranged in a second direction.
  • the transparent conductive layer 7 includes a composite structure in which an indium tin oxide layer and a silver layer are overlapped.
  • the first transparent electrode 71 is the fingerprint sensing electrode of the fingerprint recognition module 10
  • the second transparent electrode 72 is the fingerprint driving electrode of the fingerprint recognition module 10
  • the fingerprint driving electrode passes through
  • the insulating layer is connected to the metal layer 5.
  • the fingerprint sensing electrode and the fingerprint driving electrode form a mutual capacitance device, and a driving signal is applied to the fingerprint driving electrode in the second direction, and the fingerprint sensing electrode in the first direction will output a sensing signal, thereby realizing mutual capacitance sensing.
  • the fingerprint area 111 includes a first through hole 1101, a second through hole 1102, a third through hole 1103, and a fourth through hole 1104.
  • the insulating layer 6 is provided with a corresponding first through hole 1101 at a position corresponding to the first metal wiring 51.
  • the insulating layer 6 is provided with a corresponding second through hole 1102 at a position corresponding to the second metal wiring 52.
  • the fingerprint driving electrode fills the first through hole 1101 and the second through hole 1102, and covers the insulating layer between the first through hole 1101 and the second through hole 1102.
  • the first transparent electrode 71 is electrically connected to the second metal trace 52 through the second through hole 1102 to form a first electrical bridge to realize the signal connection between the metal layer 5 and the transparent conductive layer 7.
  • the second metal wiring 52 is used as the bridging structure of the first electrical bridge, and two adjacent first transparent electrodes 71 are connected together to form the first electrical bridge.
  • a plurality of the first electric bridges constitute the fingerprint drive electrode in the second direction of the fingerprint area 111 to realize the signal transmission of the fingerprint area 111, effectively reduce the impedance of the fingerprint drive electrode in the second direction, and reduce the voltage loss, thereby Increase the intensity of the induction signal.
  • the second metal trace 52 is a bridge structure of the first electric bridge.
  • the transparent conductive layer 7 is provided with corresponding third through holes 1103 and fourth through holes 1104 at positions corresponding to the second metal traces 52 to divide the first transparent electrode 71 and the second transparent electrode 72. Specifically, in the actual process, the transparent conductive layer 7 is patterned to form the first transparent electrode 71 and the second transparent electrode 72, wherein the third through hole 1103 and the fourth through hole 1104 are provided in the second transparent electrode 72. The first transparent electrode 71 and the second transparent electrode 72 are insulated from each other.
  • the transparent conductive layer 7 includes a fingerprint sensing electrode area 711, a first connection area 712, a fingerprint driving electrode area 721 and a second connection area 722 arranged in a first direction.
  • the fingerprint area 111 has a metal mesh structure.
  • the fingerprint driving electrode area 721 and the fingerprint sensing electrode area 711 are arranged on the same layer, and two adjacent fingerprint sensing electrode areas 711 are electrically connected through the first connection area 712.
  • the second connection area 722 and the first connection area 712 are alternately arranged, and two adjacent fingerprint driving electrode areas 721 are electrically connected through the second connection area 722.
  • the first metal traces 51 arranged along the first direction are touch sensing electrodes of the touch module 20, and the second metal traces 52 arranged along the second direction are touch sensing electrodes.
  • the touch driving electrodes of the control module 20 are connected to the transparent conductive layer 7 through the insulating layer 6.
  • the touch sensing electrode and the touch driving electrode form a mutual capacitance device.
  • the touch driving electrode applies a driving signal in the second direction, and the touch sensing electrode in the first direction outputs a sensing signal, thereby realizing mutual Capacitive sensing.
  • the insulating layer 6 is provided with corresponding fifth through holes 1105 and sixth through holes 1106 at positions corresponding to the first metal traces 51.
  • the transparent conductive layer 7 fills the fifth through hole 1105 and the sixth through hole 1106 and covers the insulating layer 6 between the fifth through hole 1105 and the sixth through hole 1106 to form a second electrical bridge.
  • the structure in which the transparent conductive layer 7 covers the insulating layer 6 between the fifth through hole 1105 and the sixth through hole 1106 serves as the bridging structure of the second electrical bridge, and the two adjacent ones
  • the touch driving electrodes are connected together to form the second electric bridge.
  • a plurality of second electrical bridges are connected to form touch driving electrodes in the first direction of the touch area 112 to realize signal transmission in the touch area 112.
  • the touch area 112 has a metal mesh structure.
  • the metal layer 5 includes a touch sensing electrode area 511, a third connection area 512, a touch driving electrode area 521, and a fourth connection area 522.
  • the touch sensing electrode area 511 and the touch driving electrode area 521 are arranged in the same layer, and two adjacent touch sensing electrode areas 511 are connected by a third connection area 512.
  • the fourth connection area 522 and the third connection area 512 are alternately arranged, and two adjacent touch drive electrode areas 521 are electrically connected through the fourth connection area 522.
  • the light-emitting layer has a plurality of sub-pixels 31, and the sub-pixels 31 include red sub-pixels, green sub-pixels, and blue sub-pixels.
  • the sub-pixels 31 include red sub-pixels, green sub-pixels, and blue sub-pixels.
  • the touch area four adjacent sub-pixels constitute a unit A; in the fingerprint area, four adjacent sub-pixels constitute a unit B.
  • the transparent conductive layer 7 is provided with a plurality of isolated dummy cells 73 at positions corresponding to the first metal traces 51, and the adjacent dummy cells 73 are not electrically connected, refer to FIG. 4.
  • Each virtual unit 73 covers one sub-pixel 31, and the pattern of the virtual unit 73 is larger than the pattern of the corresponding sub-pixel 31, refer to FIG. 7.
  • the top view of the touch screen 100 is a metal grid structure as a whole, composed of a plurality of small grids arranged in an array, and the opening size of each sub-pixel 31 is smaller than the size of each grid to ensure that each sub-pixel
  • the light-emitting brightness of 31 is consistent to ensure the light-emitting effect of each sub-pixel, thereby ensuring the overall display effect of the touch screen.
  • the transparent conductive layer 7 completely covers each small grid, and the sub-pixel 31 corresponding to each grid is covered by the transparent conductive layer 7, refer to FIG. 8.
  • the structure of the touch area and the fingerprint area are consistent, which ensures the optical consistency between the touch area and the fingerprint area, makes the optical effects of each position of the touch screen consistent, and ensures the overall optical effect of the touch screen. Effect.
  • This embodiment provides a touch screen and a display device.
  • the touch module and the fingerprint recognition module in the same layer, the integrated integration of fingerprint recognition and touch functions is realized.
  • the process of attaching the fingerprint recognition module to the outside reduces the cost of the product, and at the same time reduces the thickness of the product, which effectively improves the quality and function of the product.
  • the signal connection of the two layers of materials is realized by connecting the transparent conductive layer and the metal layer, and part of the metal layer serves as a bridge structure at the same time, connecting adjacent transparent electrodes together to form fingerprints arranged in one direction.
  • the special structure design of the driving electrode, the metal layer and the transparent conductive layer can effectively reduce the channel impedance and increase the sensing signal strength; by setting the virtual unit in the touch area, the structure of the touch area and the fingerprint area are consistent, ensuring that the touch area and the fingerprint area are consistent.
  • the optical consistency of the fingerprint area makes the optical effect of each position of the touch screen consistent, ensuring the overall optical effect of the touch screen.

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

一种触摸屏（110）及显示装置，所述触摸屏（110）包括指纹区（111）和触控区（112），所述指纹区（111）设有指纹识别模组（10），所述触控区（112）设有触控模组（20），所述触控模组（20）和所述指纹识别模组（10）同层设置。通过将触控模组和指纹识别模组同层设置，实现了指纹识别和触控功能的一体化集成，相比于现有的指纹识别装置，去除了外贴指纹识别模组的工艺，降低了产品成本，同时也减薄了产品厚度，有效提升了产品的品质和功能。

Description

触摸屏及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种触摸屏及显示装置。
 背景技术
触摸屏具有反应速度快、定位准确、支持多点触控、使用寿命长等诸多优点，被广泛应用在各种设备上，如手机、PC、考勤机上。
指纹识别由于具有良好的安全性和使用便捷性已经被广泛应用。但是，目前的指纹识别设备大都是单独工作的指纹模组。
手机是使用指纹识别最多的一种设备，目前手机上的指纹识别模组包括如下类型：
第一类是正面的独立按键式的，这种设计方便用户操作，但是影响手机的屏占比。
第二类是放置在手机背面的按键式的，这种设计由于用户看不到指纹解锁的位置，需要手指在手机背面摸索，影响用户体验。
第三类是近年来兴起屏内指纹识别的技术风潮，但是，目前面市的屏内指纹识别主要是在屏幕下方贴合光学或者超声波式的指纹模组。如图1所示，一种触摸屏包括指纹识别模组101、触控模组102以及盖板103。该触摸屏非常方便用户操作，而且同时实现了高屏占比，实现全面屏。但是由于外贴指纹模组，增大了手机正面面板模组的厚度，影响整机的机构设计，而且会增加产品生产成本。
 技术问题
本发明的目的在于，提供一种触摸屏及显示装置，以解决现有屏内指纹识的触摸屏的厚度大，影响整机的设计，增加生产成本的技术问题。
 技术解决方案
为实现上述目的，本发明提供一种触摸屏，包括指纹区和触控区，所述指纹区设有指纹识别模组，所述触控区设有触控模组，所述触控模组和所述指纹识别模组，同层设置。
进一步地，所述的触摸屏包括金属层、绝缘层以及透明导电层，所述金属层分布于所述指纹区和所述触控区，所述金属层包括若干第一金属走线和垂直于所述第一金属走线的第二金属走线；所述绝缘层设于所述指纹区和所述触控区的金属层上；所述透明导电层设于所述绝缘层上，所述透明导电层包括第一透明电极和垂直于所述第一透明电极的第二透明电极；
在所述指纹区，所述第一透明电极为所述指纹识别模组的指纹感应电极，所述第二透明电极为所述指纹识别模组的指纹驱动电极，所述指纹驱动电极穿过所述绝缘层连接至所述金属层；
在所述触控区，所述第一金属走线为所述触控模组的触控感应电极，所述第二金属走线为所述触控模组的触控驱动电极，所述触控驱动电极穿过所述绝缘层连接至透明导电层。
进一步地，在所述指纹区，包括：所述绝缘层在所述第一金属走线对应的位置开设有相应的第一通孔；所述绝缘层在所述第二金属走线对应的位置开设有相应的第二通孔；以及所述透明导电层在所述第二金属走线对应的位置开设有相应的第三通孔和第四通孔；其中，所述指纹驱动电极填充所述第一通孔及所述第二通孔，且覆盖所述第一通孔及所述第二通孔之间的绝缘层。
进一步地，在所述触控区，包括：所述绝缘层在所述第一金属走线对应的位置开设有相应的第五通孔和第六通孔；所述透明导电层在所述第一金属走线对应的位置设有多个虚拟单元；其中，所述透明导电层填充所述第五通孔及所述第六通孔，且覆盖所述第五通孔及所述第六通孔之间的绝缘层。
进一步地，所述透明导电层包括指纹感应电极区、第一连接区、指纹驱动电极区以及第二连接区；相邻的两个指纹感应电极区通过所述第一连接区连接；所述指纹驱动电极区与所述指纹感应电极区同层设置；所述第二连接区与所述第一连接区交错设置，相邻的两个指纹驱动电极区通过所述第二连接区连接。
进一步地，所述金属层包括触控感应电极区、第三连接区、触控驱动电极区以及第四连接区；相邻的两个触控感应电极区通过所述第三连接区连接；所述触控驱动电极区与所述触控感应电极区同层设置；所述第四连接区与所述第三连接区交错设置，相邻的两个触控驱动电极区通过所述第四连接区连接。
进一步地，所述的触摸屏还包括基板、薄膜晶体管层、发光层以及薄膜封装层；所述薄膜晶体管层，设置在所述基板上；所述发光层设置在所述薄膜晶体管层上；所述薄膜封装层设置在所述发光层上；其中，所述金属层设于所述薄膜封装层上。
进一步地，所述发光层具有多个子像素；在所述触控区，一虚拟单元的覆盖一个子像素。
进一步地，所述金属层包括钛层、铝层交叠的复合结构；所述透明导电层包括氧化铟锡层、银层交叠的复合结构。
为实现上述目的，本发明还提供一种显示装置，包括前文所述的触摸屏。
 有益效果
本发明的技术效果在于，本发明提供一种触摸屏及显示装置，通过将触控模组和指纹识别模组同层设置，实现了指纹识别和触控功能的一体化集成，相比于现有的指纹识别装置，去除了外贴指纹识别模组的工艺，降低了产品成本，同时也减薄了产品厚度，有效提升了产品的品质和功能。
进一步地，通过在指纹区，通过将透明导电层和金属层实现两层材料的信号连接，部分金属层同时作为架桥结构，将相邻的透明电极连接到一起，构成沿一方向排列的指纹驱动电极，金属层结合透明导电层的特殊结构设计可以有效降低通道阻抗，提升感应信号强度；通过在触控区设置虚拟单元，使得触控区与指纹区的结构一致，保证了触控区与指纹区的光学一致性，使得触摸屏各个位置的光学效果一致，确保了触摸屏的整体光学效果。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为现有触摸屏的结构示意图。
图2为本实施例所述触摸屏的结构示意图。
图3为本实施例所述指纹识别模组的结构示意图。
图4为本实施例所述触控模组的结构示意图。
图5为本实施例所述指纹区的俯视图。
图6为本实施例所述触控区的俯视图。
图7为图6中A单元的放大图。
图8为图5中B单元的放大图。
附图部分标识如下：
现有附图标记如下：
101指纹识别模组；102触控模组；103盖板；
本申请附图标记如下：
110触摸屏；            111指纹区；
112触控区；             10指纹识别模组；
20触控模组；            1基板；
2薄膜晶体管层；         3发光层；
4薄膜封装层；           5金属层；
6绝缘层；               7透明导电层；
31子像素；              51第一金属走线；
52第二金属走线；        71第一透明电极；
72第二透明电极；        73虚拟单元；
711指纹感应电极区；     712第一连接区；
721指纹驱动电极区；     722第二连接区；
511触控感应电极区；     512第三连接区；
521触控驱动电极区；     522第四连接区；
1101第一通孔；          1102第二通孔；
1103第三通孔；          1104第四通孔；
1105第五通孔；          1106第六通孔。
 本发明的实施方式
以下参考说明书附图介绍本发明的优选实施例，用以举例证明本发明可以实施，这些实施例可以向本领域中的技术人员完整介绍本发明的技术内容，使得本发明的技术内容更加清楚和便于理解。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。
本实施例提供一种显示装置，包括一触摸屏。显示装置可以为手机，也可以为电脑、电视机、智能穿戴设备等，本实施例对此不作特殊限定。
如图2所示，本实施例提供一种触摸屏100，包括指纹区111和触控区112，指纹区111设有指纹识别模组10，触控区112设有触控模组20，触控模组20和指纹识别模组10，同层设置。其中，指纹区111用以识别用户的指纹，对显示装置进行解锁处理，触控区112用以实现显示装置的触控功能。
如图3-4所示，触摸屏110从下至上依次包括基板1、薄膜晶体管层2、发光层3、薄膜封装层4、金属层5、绝缘层6以及透明导电层7。
基板1为普通的玻璃基板；薄膜晶体管层2包括多个薄膜晶体管用以驱动触摸屏100工作；发光层3具有发光材料，用以发光，使触摸屏100实现显示；薄膜封装层4用以保护发光层3，从而避免外界的水、氧等侵入触摸屏100内部而损坏发光驱动电路。
金属层5，分布于指纹区111和触控区112，且被图案化处理。金属层5包括若干第一金属走线51和垂直于第一金属走线51的第二金属走线52。金属层5包括钛层、铝层交叠的复合结构，具有良好的导电性能。
绝缘层6图案化设于指纹区111和触控区112的金属层5上。
透明导电层7设于绝缘层6上，透明导电层7包括沿第一方向排列的第一透明电极71和垂直于沿第二方向排列的第一透明电极71的第二透明电极72。透明导电层7包括氧化铟锡层、银层交叠的复合结构。
如图3所示，在指纹区111，第一透明电极71为指纹识别模组10的指纹感应电极，第二透明电极72为指纹识别模组10的指纹驱动电极，所述指纹驱动电极穿过所述绝缘层连接至金属层5。所述指纹感应电极与所述指纹驱动电极形成互电容器件，在第二方向所述指纹驱动电极施加驱动信号，第一方向所述指纹感应电极会输出一个感应信号，从而实现互电容感应。
具体地，在指纹区111，包括第一通孔1101、第二通孔1102、第三通孔1103以及第四通孔1104。
绝缘层6在第一金属走线51对应的位置开设有相应的第一通孔1101。绝缘层6在第二金属走线52对应的位置开设有相应的第二通孔1102。其中，所述指纹驱动电极填充第一通孔1101及第二通孔1102，且覆盖第一通孔1101及第二通孔1102之间的绝缘层。
本实施例中，第一透明电极71穿过第二通孔1102与第二金属走线52电连接，形成一第一电桥，实现金属层5与透明导电层7两层的信号连接。换句话来说，通过第二金属走线52作为所述第一电桥的架桥结构，将相邻的两个第一透明电极71连接到一起，形成所述第一电桥。多个所述第一电桥，构成了指纹区111第二方向的指纹驱动电极，用以实现指纹区111的信号传输，有效降低第二方向的指纹驱动电极的阻抗，降低电压的损耗，从而提升感应信号强度。其中，第二金属走线52为所述第一电桥的架桥结构。
透明导电层7在第二金属走线52对应的位置开设有相应的第三通孔1103和第四通孔1104，用以划分第一透明电极71和第二透明电极72。具体地，在实际工艺过程中，对透明导电层7进行图案化处理形成第一透明电极71和第二透明电极72，其中第三通孔1103和第四通孔1104设于第二透明电极72的两侧，使得第一透明电极71和第二透明电极72相互绝缘。
如图3、5所示，透明导电层7包括沿第一方向排列的指纹感应电极区711、第一连接区712、沿第二方向排列的指纹驱动电极区721以及第二连接区722。
如图5所示，指纹区111为金属网格结构。指纹驱动电极区721与指纹感应电极区711同层设置，相邻的两个指纹感应电极区711通过第一连接区712实现电连接。第二连接区722与第一连接区712交错设置，相邻的两个指纹驱动电极区721通过第二连接区722实现电连接。
如图4所示，在触控区112，沿第一方向排列的第一金属走线51为触控模组20的触控感应电极，沿第二方向排列的第二金属走线52为触控模组20的触控驱动电极，所述触控驱动电极穿过绝缘层6连接至透明导电层7。所述触控感应电极与所述触控驱动电极形成互电容器件，在第二方向所述触控驱动电极施加驱动信号，第一方向所述触控感应电极会输出一个感应信号，从而实现互电容感应。
如图4、6所示，在触控区112，绝缘层6在第一金属走线51对应的位置开设有相应的第五通孔1105和第六通孔1106。
其中，透明导电层7填充第五通孔1105及第六通孔1106，且覆盖第五通孔1105及第六通孔1106之间的绝缘层6，形成一第二电桥。换句话来说，透明导电层7覆盖第五通孔1105及第六通孔1106之间的绝缘层6的结构作为所述第二电桥的架桥结构，将相邻的两个所述触控驱动电极连接到一起，形成所述第二电桥。多个第二电桥连接，构成了触控区112第一方向的触控驱动电极，实现触控区112的信号传输。
如图6所示，触控区112为金属网格结构。金属层5包括触控感应电极区511、第三连接区512、触控驱动电极区521以及第四连接区522。
触控感应电极区511与触控驱动电极区521同层设置，相邻的两个触控感应电极区511通过第三连接区512连接。第四连接区522与第三连接区512交错设置，相邻的两个触控驱动电极区521通过第四连接区522实现电连接。
如图7-8所示，所述发光层具有多个子像素31，子像素31包括红色子像素、绿色子像素以及蓝色子像素。在所述触控区，四个相邻的子像素构成一个单元A；在所述指纹区，四个相邻的子像素构成一个单元B。
在触控区112，透明导电层7在第一金属走线51对应的位置设有多个孤立的虚拟单元73，相邻的虚拟单元73不做电连接，参照图4。每一虚拟单元73的覆盖一个子像素31，虚拟单元73的图形大于对应的子像素31的图形，参照图7。
本实施例中，触摸屏100的俯视图整体为金属网格结构，由多个阵列排布的小网格组成，每一子像素31的开口尺寸小于每一网格的尺寸，以保证每一子像素31的发光的亮度一致，保证每一子像素的发光效果，从而保证触摸屏的整体显示效果。在指纹区111，透明导电层7完全覆盖每一小网格，且每一网格对应的子像素31被透明导电层7遮盖，参照图8。因此，通过在触控区设置虚拟单元，使得触控区与指纹区的结构一致，保证了触控区与指纹区的光学一致性，使得触摸屏各个位置的光学效果一致，确保了触摸屏的整体光学效果。
本实施例提供一种触摸屏及显示装置，通过将触控模组和指纹识别模组同层设置，实现了指纹识别和触控功能的一体化集成，相比于现有的指纹识别装置，去除了外贴指纹识别模组的工艺，降低了产品成本，同时也减薄了产品厚度，有效提升了产品的品质和功能。
进一步地，通过在指纹区，通过将透明导电层和金属层实现两层材料的信号连接，部分金属层同时作为架桥结构，将相邻的透明电极连接到一起，构成沿一方向排列的指纹驱动电极，金属层结合透明导电层的特殊结构设计可以有效降低通道阻抗，提升感应信号强度；通过在触控区设置虚拟单元，使得触控区与指纹区的结构一致，保证了触控区与指纹区的光学一致性，使得触摸屏各个位置的光学效果一致，确保了触摸屏的整体光学效果。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种触摸屏，其包括指纹区和触控区，所述指纹区设有指纹识别模组，所述触控区设有触控模组，所述触控模组和所述指纹识别模组，同层设置。
  2. 根据权利要求1所述的触摸屏，其中，包括
    金属层，分布于所述指纹区和所述触控区，所述金属层包括若干第一金属走线和垂直于所述第一金属走线的第二金属走线；
    绝缘层，设于所述指纹区和所述触控区的金属层上；以及
    透明导电层，设于所述绝缘层上，所述透明导电层包括第一透明电极和垂直于所述第一透明电极的第二透明电极；
    在所述指纹区，所述第一透明电极为所述指纹识别模组的指纹感应电极，所述第二透明电极为所述指纹识别模组的指纹驱动电极，所述指纹驱动电极穿过所述绝缘层连接至所述金属层；
    在所述触控区，所述第一金属走线为所述触控模组的触控感应电极，所述第二金属走线为所述触控模组的触控驱动电极，所述触控驱动电极穿过所述绝缘层连接至透明导电层。
  3. 根据权利要求2所述的触摸屏，其中，
    在所述指纹区，包括
    所述绝缘层在所述第一金属走线对应的位置开设有相应的第一通孔；
    所述绝缘层在所述第二金属走线对应的位置开设有相应的第二通孔；以及
    所述透明导电层在所述第二金属走线对应的位置开设有相应的第三通孔和第四通孔；
    其中，所述指纹驱动电极填充所述第一通孔及所述第二通孔，且覆盖所述第一通孔及所述第二通孔之间的绝缘层。
  4. 根据权利要求2所述的触摸屏，其中，
    在所述触控区，包括
    所述绝缘层在所述第一金属走线对应的位置开设有相应的第五通孔和第六通孔；以及
    所述透明导电层在所述第一金属走线对应的位置设有多个虚拟单元；
    其中，所述透明导电层填充所述第五通孔及所述第六通孔，且覆盖所述第五通孔及所述第六通孔之间的绝缘层。
  5. 根据权利要求2所述的触摸屏，其中，
    所述透明导电层包括
    指纹感应电极区；
    第一连接区，相邻的两个指纹感应电极区通过所述第一连接区连接；
    指纹驱动电极区，与所述指纹感应电极区同层设置；以及
    第二连接区，与所述第一连接区交错设置，相邻的两个指纹驱动电极区通过所述第二连接区连接。
  6. 根据权利要求2所述的触摸屏，其中，
    所述金属层包括
    触控感应电极区；
    第三连接区，相邻的两个触控感应电极区通过所述第三连接区连接；
    触控驱动电极区，与所述触控感应电极区同层设置；以及
    第四连接区，与所述第三连接区交错设置，相邻的两个触控驱动电极区通过所述第四连接区连接。
  7. 根据权利要求2所述的触摸屏，其中，还包括
    基板；
    薄膜晶体管层，设置在所述基板上；
    发光层，设置在所述薄膜晶体管层上；以及
    薄膜封装层，设置在所述发光层上；
    其中，所述金属层设于所述薄膜封装层上。
  8. 根据权利要求7所述的触摸屏，其中，
    所述发光层具有多个子像素；
    在所述触控区，一虚拟单元的覆盖一个子像素。
  9. 根据权利要求2所述的触摸屏，其中，
    所述金属层包括钛层、铝层交叠的复合结构；
    所述透明导电层包括氧化铟锡层、银层交叠的复合结构。
  10. 一种显示装置，包括如权利要求1所述的触摸屏。
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