WO2020047911A1 - 一种amoled显示面板 - Google Patents

一种amoled显示面板 Download PDF

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Publication number
WO2020047911A1
WO2020047911A1 PCT/CN2018/107010 CN2018107010W WO2020047911A1 WO 2020047911 A1 WO2020047911 A1 WO 2020047911A1 CN 2018107010 W CN2018107010 W CN 2018107010W WO 2020047911 A1 WO2020047911 A1 WO 2020047911A1
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WO
WIPO (PCT)
Prior art keywords
layer
display panel
conductive bridge
amoled display
electrode
Prior art date
Application number
PCT/CN2018/107010
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English (en)
French (fr)
Inventor
郑园
严志成
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 US16/467,735 priority Critical patent/US20210343972A1/en
Publication of WO2020047911A1 publication Critical patent/WO2020047911A1/zh

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Classifications

    • 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
    • H10K50/805—Electrodes
    • H10K50/81—Anodes
    • H10K50/816—Multilayers, e.g. transparent multilayers
    • 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
    • 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
    • G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
    • 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
    • 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
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/822—Cathodes characterised by their shape
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance

Definitions

  • the present application relates to the field of display technology, and in particular, to an AMOLED display panel.
  • AMOLED Active-matrix Organic light emitting diode
  • AMOLED Active-matrix Organic light emitting diode
  • the first is the front fingerprint recognition integrated in the home button, and the other is the rear fingerprint recognition in a separate fingerprint recognition area on the back of the fuselage. Both types of fingerprint recognition have some disadvantages.
  • the front fingerprint affects the proportion of the screen, and the rear fingerprint is not convenient.
  • Figure 1 is the current common fingerprint recognition design.
  • a front fingerprint recognition integrated in the home button, the fingerprint recognition unit and the display area are independent of each other.
  • the fingerprint recognition is placed in the lower area of the display screen, which limits the screen ratio.
  • the number 1 in the figure indicates the display area; the number 2 in the figure indicates the effective light-emitting area; the number 3 in the figure indicates a single pixel area; the number 4 in the figure indicates Metal 1, and the first electrode connected to the light-emitting diode is usually designed as a whole Surface, the entire effective light-emitting area shares a voltage; 5 in the figure represents Metal 3, which is connected to the second electrode of the light-emitting diode, and each pixel corresponds to a Metal 3.
  • smart phones are pursuing screen duty cycle or even full screen. How to increase the screen ratio has become a hot spot.
  • the present application provides an AMOLED display panel capable of embedding a sensing electrode into the AMOLED panel to realize fingerprint recognition under the screen, thereby increasing the proportion of the display area, thereby realizing a full-screen design.
  • This application provides an AMOLED display panel, including:
  • An anode layer provided on the base substrate
  • a pixel definition layer provided on the anode layer and defining a pixel area
  • a light-emitting layer is disposed on the anode layer corresponding to the pixel region;
  • a second metal layer disposed on the pixel definition layer
  • a cathode layer disposed on the pixel definition layer and the second metal layer;
  • the cathode layer includes a plurality of cathodes corresponding to the light-emitting layer and a plurality of induction electrodes provided insulated from the cathode.
  • the plurality of induction electrodes form a plurality of first electrode chains and a plurality of second electrodes which are insulated from each other. Electrode chain.
  • the anode layer includes an anode and a first conductive bridge disposed at a distance from each other, and the pixel defining layer is provided with a first via hole at a position corresponding to the first conductive bridge.
  • An electrode chain includes a plurality of first sensing electrodes, and the plurality of first sensing electrodes are electrically connected to the first conductive bridge through the first via hole.
  • the anode and the first conductive bridge are made of transparent indium tin metal oxide material.
  • the pixel definition layer includes a first pixel definition layer and a second pixel definition layer, the first pixel definition layer is disposed on the anode layer, and the second metal layer is disposed on On the first pixel definition layer, the second pixel definition layer is disposed on the second metal layer.
  • the second metal layer includes a second conductive bridge distributed in an array, and the second pixel defining layer is provided with a second via hole at a position corresponding to the second conductive bridge.
  • a plurality of cathodes are electrically connected to the second conductive bridge through the second via hole.
  • the second metal layer includes a second conductive bridge and a third conductive bridge which are disposed in an insulated manner, and a plurality of first sensing electrodes on the first electrode chain communicates with all of the electrodes through a third via.
  • the third conductive bridge is electrically connected, and the plurality of cathodes are electrically connected to the second conductive bridge through the second via hole.
  • the second electrode chain includes a plurality of second sensing electrodes disposed at intervals, and the plurality of second sensing electrodes are electrically connected through a connecting portion.
  • the second sensing electrode and the connection portion are an integrated structure.
  • the first sensing electrode, the second sensing electrode, the connection portion, and the plurality of cathodes are made by a same mask process.
  • the sensing electrode is a fingerprint recognition electrode.
  • an AMOLED display panel including:
  • An anode layer provided on the base substrate
  • a pixel definition layer provided on the anode layer and defining a pixel area
  • a light-emitting layer is disposed on the anode layer corresponding to the pixel region;
  • a second metal layer disposed on the pixel definition layer
  • a cathode layer disposed on the pixel definition layer and the second metal layer;
  • the cathode layer includes a plurality of cathodes corresponding to the light-emitting layer and a plurality of induction electrodes provided insulated from the cathode.
  • the plurality of induction electrodes form a plurality of first electrode chains and a plurality of second electrodes which are insulated from each other.
  • the anode layer includes an anode and a first conductive bridge disposed at a distance from each other, and the pixel defining layer is provided with a first via hole at a position corresponding to the first conductive bridge.
  • An electrode chain includes a plurality of first sensing electrodes, and the plurality of first sensing electrodes are electrically connected to the first conductive bridge through the first via hole.
  • the anode and the first conductive bridge are made of transparent indium tin metal oxide material.
  • the pixel definition layer includes a first pixel definition layer and a second pixel definition layer, the first pixel definition layer is disposed on the anode layer, and the second metal layer is disposed on On the first pixel definition layer, the second pixel definition layer is disposed on the second metal layer.
  • the second metal layer includes a second conductive bridge distributed in an array, and the second pixel defining layer is provided with a second via hole at a position corresponding to the second conductive bridge.
  • a plurality of cathodes are electrically connected to the second conductive bridge through the second via hole.
  • the second metal layer includes a second conductive bridge and a third conductive bridge which are disposed in an insulated manner, and a plurality of first sensing electrodes on the first electrode chain communicates with all of the electrodes through a third via.
  • the third conductive bridge is electrically connected, and the plurality of cathodes are electrically connected to the second conductive bridge through the second via hole.
  • the second electrode chain includes a plurality of second sensing electrodes disposed at intervals, and the plurality of second sensing electrodes are electrically connected through a connecting portion.
  • the second sensing electrode and the connection portion are an integrated structure.
  • the first sensing electrode, the second sensing electrode, the connection portion, and the plurality of cathodes are made by a same mask process.
  • the sensing electrode is a fingerprint recognition electrode.
  • the beneficial effect of the present application is: compared with the AMOLED display panel of the prior art, the AMOLED display panel of the present application forms a patterned cathode and a plurality of sensing electrodes by patterning a cathode layer, wherein, the first Adjacent second induction electrodes on the two-electrode chain are directly connected through the cathode layer, and adjacent first induction electrodes on the first electrode chain are connected through the first conductive bridge; adjacent cathodes can be connected through the second conductive bridge.
  • the first sensing electrode is used to form a capacitance with the second sensing electrode to implement fingerprint identification.
  • This design can effectively use the space in the screen, embed the fingerprint identification in the panel, reduce the space occupied by the fingerprint identification in the panel boundary area, increase the proportion of the display area, and then achieve a full-screen design, and place the fingerprint identification on the display panel. Positive, in line with applicable habits.
  • FIG. 1 is a schematic diagram of fingerprint recognition of a conventional AMOLED display panel
  • FIG. 2A is a schematic diagram of a structure of a film layer of an AMOLED display panel along a direction of a first electrode chain according to an embodiment of the present application;
  • 2B is a schematic diagram of a structure of a film layer of an AMOLED display panel along a direction of a second electrode chain according to an embodiment of the present application;
  • FIG. 3 is a schematic diagram of fingerprint recognition under an AMOLED display panel according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a connection relationship between layers of fingerprint identification under an AMOLED display panel screen provided in an embodiment of the present application;
  • FIG. 5 is a schematic structural diagram of an AMOLED display panel according to another embodiment of the present application.
  • This application is directed to the prior art fingerprint recognition design.
  • the fingerprint recognition unit and the display area are independent of each other, and there is a technical problem of limiting the screen ratio. This embodiment can solve this defect.
  • FIG. 2A is a schematic diagram of a structure of a film layer of an AMOLED display panel along a direction of a first electrode chain according to an embodiment of the present application.
  • the AMOLED display panel includes: a base substrate 201; a buffer layer 202, which is prepared on the base substrate 201; a thin film transistor layer, which is prepared on the buffer layer 202; and the thin film transistor layer includes: A source layer 203, an inter-insulating layer 204, a first gate 205, a gate insulating layer 206, a second gate 207, an insulating layer 208, and two ends of the active layer 203 and passing through the inter-insulating layer 204 and the A gate insulating layer 206 and a source 209 and a drain 210 of the insulating layer 208; a planarization layer 211 prepared on the thin film transistor layer; an anode layer 212 prepared on the planarization layer 211; a pixel definition layer 213, which is prepared on the ano
  • the pixel definition layer 213 includes a first pixel definition layer 213A and a second pixel definition layer 213B which are arranged in a stack; a light emitting layer 214, which corresponds to the pixel area. Prepared on the anode layer 212; a second metal layer 218 is prepared on the first pixel definition layer 213A; and a cathode layer 215 is prepared on the pixel definition layer 213.
  • the cathode layer 215 includes a plurality of cathodes 215A disposed on the light-emitting layer 214, a plurality of first induction electrodes 215B and a plurality of second induction electrodes 215C electrically insulated from the cathode 215A (as shown in FIG. 2B) (Shown), the plurality of first sensing electrodes 215B form a first electrode chain (such as 309 in FIG. 3), and the plurality of second sensing electrodes 215C form a second electrode chain (such as 308 in FIG. 3).
  • the non-pixel region corresponding to the pixel definition layer 213 of the first sensing electrode 215B is prepared by insulating the same layer with the cathode 215A.
  • the anode layer 212 includes a plurality of anodes 212A corresponding to the light-emitting layer 214 and a plurality of first conductive bridges 212B provided insulated from the anode 212A.
  • the anode 212A and the first conductive bridge 212B are made of transparent indium tin metal oxide material.
  • the second metal layer 218 includes an array of second conductive bridges 218A (such as 311 in FIG. 3), the second conductive bridges 218A are located between two adjacent cathodes 215A, and the second pixel defining layer 213B is provided with a second via hole 219 at a position corresponding to the second conductive bridge 218A, and two adjacent cathodes 215A are electrically connected to the second conductive bridge 218A through the second via hole 219 so that the entire The cathode 215A in the effective light-emitting region maintains the same negative voltage.
  • the second conductive bridge 218A may be made of the same material as the anode 212A, or other conductive materials.
  • FIG. 2B a schematic view of a layer structure of an AMOLED display panel along the direction of a second electrode chain according to an embodiment of the present application; compared to the first electrode chain, the second electrode chain (as shown in FIG. 3) 308) a plurality of the second sensing electrodes 215C are directly connected through the connecting portion 220, wherein the second sensing electrode 215C and the connecting portion 220 are an integrated structure; specifically, the second sensing electrode 215C and The connecting portion 220 is made by the same photomask process; preferably, the cathode layer is formed by the same photomask process to form a plurality of the cathodes 215A, a plurality of the first sensing electrodes, and the integrated structure.
  • the second sensing electrode 215C and the connection portion 220 The connecting portion 220 connects two adjacent second sensing electrodes 215C on a second electrode chain, thereby forming a plurality of insulated second electrode chains.
  • FIG. 3 it is a schematic diagram of fingerprint recognition under an AMOLED display panel according to an embodiment of the present application.
  • the AMOLED display panel includes a base substrate 301 on which an effective light emitting area 302 is provided.
  • the effective light emitting area 302 includes a plurality of pixel areas 303, and each of the pixel areas 303 is provided with a pattern.
  • a plurality of sensing electrodes 305 are prepared on the same layer as the cathode 304 and spaced from each other.
  • the plurality of sensing electrodes 305 form a first electrode chain 309 and a second electrode chain 308 which are insulated from each other.
  • the first electrode chain 309 and the second electrode chain 308 are insulated from each other.
  • the shape of the sensing electrode 305 is a ring shape surrounding the cathode 304, but the size and style of the sensing electrode 305 are not limited in this application.
  • the sensing electrode 305 includes a first sensing electrode 305B on the first electrode chain 309 and a second sensing electrode 305A on the second electrode chain 308. Wherein, the two adjacent second sensing electrodes 305A are connected through a connecting portion 310.
  • the cathode 304, the sensing electrode 305, and the connection portion 310 are made by the same photomask process.
  • the connection portion 310 connects the second induction electrode 305A into a plurality of independent second electrodes.
  • the first conductive bridge 306 is insulated from the sensing electrode 305 and is located between two adjacent first sensing electrodes 305B.
  • the first sensing bridge 305 is connected to each other through a first via hole to form a plurality of independent electrodes.
  • the first conductive bridge 306 is formed by the anode layer.
  • Two adjacent cathodes 304 are electrically connected to a second conductive bridge 307 through the second vias in the pixel definition layer; preferably, the cathodes 304 corresponding to the first electrode chain 309
  • the cathodes 304 adjacent to the second electrode chain 308 are connected to each other.
  • the second conductive bridge 307 may be formed by the anode layer or the second metal layer.
  • the first electrode chain 309 and the second electrode chain 308 are independent of each other and are arranged crosswise.
  • the sensing electrode 305 is a fingerprint recognition electrode
  • a first sensing electrode 305B is used to form a capacitance with the second sensing electrode 305A to implement fingerprint recognition.
  • FIG. 4 it is a schematic diagram of a connection relationship between various film layers of fingerprint recognition under an AMOLED display panel provided in an embodiment of the present application. It includes a cathode 403, which is directly opposite to the light-emitting layer 407, and two adjacent cathodes 403 are connected to the second conductive bridge 401 through a second via 402; a first sensing electrode 409 is connected to the first conductive via a first via 406 The bridge 405 is connected; the second sensing electrode 408 is connected through a connection portion 404 prepared at the same layer; wherein the first conductive bridge 405 is insulated from the second conductive bridge 401. A capacitance is formed between the first sensing electrode 409 and the adjacent second sensing electrode 408 to implement fingerprint recognition.
  • FIG. 5 it is a schematic structural diagram of an AMOLED display panel according to another embodiment of the present application.
  • the thin film transistor layer 501 of the AMOLED display panel is prepared.
  • a pixel definition layer 503 is prepared on the anode 502 and defines a pixel area, and the pixel definition layer 503 includes a first pixel definition layer 503A and a second pixel definition layer 503B which are arranged in a layer;
  • a two metal layer 506 is disposed on the surface of the first pixel definition layer 503A.
  • the second metal layer 506 includes a second conductive bridge 506A and a third conductive bridge 506B insulated from the second conductive bridge 506A.
  • the two pixel definition layer 503B is provided with a third via 508 at a position corresponding to the third conductive bridge 506B, and a second via 507 is provided at a position corresponding to the second conductive bridge 506A;
  • the pixel region is provided with light emission Layer 504;
  • a cathode layer 505 is disposed on the light-emitting layer 504, and the cathode layer 505 includes a plurality of cathodes 505A and a plurality of first electrode chains (such as 309 in FIG. 3) and the second electrodes which are disposed in an insulated manner.
  • Electrode chain (308 in FIG. 3); wherein two adjacent first sensing electrodes 505B on the first electrode chain are electrically connected to the third conductive bridge 506B through the third via 508;
  • the cathode 505A is electrically connected to the second conductive bridge 506A through the second via hole 507.
  • the AMOLED display panel of the present application uses a patterning process of a cathode layer in a light emitting diode. This process provides a diode-to-diode design in addition to providing a light-emitting voltage to the diode of each pixel. Induction electrodes, adjacent second induction electrodes on the second electrode chain are directly connected through connection lines formed by patterning the cathode layer, and adjacent first induction electrodes on the first electrode chain are punched to the first electrode prepared on the same layer as the anode. A conductive bridge is connected; adjacent cathodes can be punched to a second conductive bridge added in the pixel definition layer for connection.
  • the first sensing electrode is used to form a capacitance with the second sensing electrode to implement fingerprint identification.
  • This design can effectively use the space in the screen, embed the fingerprint identification in the panel, reduce the space occupied by the fingerprint identification in the panel boundary area, increase the proportion of the display area, and then achieve a full-screen design, and place the fingerprint identification on the display panel. Positive, in line with applicable habits.

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

Abstract

本申请提供一种AMOLED显示面板，包括衬底基板，以及设于所述衬底基板上的阳极层、像素定义层、发光层、第二金属层、阴极层；所述阴极层包括多个阴极和与所述阴极电绝缘的多个感应电极，多个所述感应电极形成相互独立且交错分布的第一电极链和第二电极链；所述第一电极链上的感应电极用于与所述第二电极链上的感应电极形成电容。

Description

一种AMOLED显示面板 技术领域
本申请涉及显示技术领域，尤其涉及一种AMOLED显示面板。
 背景技术
Active-matrix organic light emitting diode，简称AMOLED，也就是有源矩阵有机发光二极体面板。目前市面上存在的指纹识别方案主要分为两种，第一种是集成在home键中的前置指纹识别，另一种是机身背部单独指纹识别区域的后置指纹识别。这两种指纹识别都存在一定的不足，前置指纹影响屏的占比，后置指纹不太方便。
图1是目前常见指纹识别的设计，一种集成在home键中的前置指纹识别，指纹识别单元与显示区域相互独立，指纹识别放在显示屏的下方区域，限制了屏占比。图中所示1表示显示屏区域；图中所示2表示有效发光区；图中3表示单个像素区域；图中所示4表示 Metal 1，连接发光二极管的第一电极，通常设计为一整面，整个有效发光区共用一个电压；图中5表示Metal 3，连接发光二极管的第二电极，每个像素分别对应一个Metal 3，为二极管提供不同的电压；图中6表示集成于home键的指纹识别区域。在智能手机追求屏占空比甚至是全面屏的今天，如何提高屏的占比已成为时下热点。
因此，有必要提供一种AMOLED显示面板，以解决现有技术所存在的问题。
 技术问题
本申请提供一种AMOLED显示面板，能够将感应电极嵌入到AMOLED面板中，实现屏下指纹识别，从而增加显示区域的占比，进而实现全面屏设计。
 技术解决方案
为实现上述目的，本申请提供的技术方案如下：
本申请提供一种AMOLED显示面板，包括：
衬底基板；
阳极层，设置在所述衬底基板上；
像素定义层，设置在所述阳极层上，且定义出像素区域；
发光层，对应所述像素区域设置于所述阳极层上；
第二金属层，设置在所述像素定义层上；
阴极层，设置在所述像素定义层和所述第二金属层上；
其中，所述阴极层包括对应所述发光层的多个阴极以及与所述阴极绝缘设置的多个感应电极，多个所述感应电极形成相互绝缘的多个第一电极链和多个第二电极链。
在本申请的AMOLED显示面板中，所述阳极层包括相互间隔设置的阳极和第一导电桥，所述像素定义层在对应所述第一导电桥的位置设置有第一过孔，所述第一电极链包括多个第一感应电极，多个所述第一感应电极通过所述第一过孔与所述第一导电桥电连接。
在本申请的AMOLED显示面板中，所述阳极、所述第一导电桥的材料均为透明铟锡金属氧化物材料。
在本申请的AMOLED显示面板中，所述像素定义层包括第一像素定义层与第二像素定义层，所述第一像素定义层设置于所述阳极层上，所述第二金属层设置在所述第一像素定义层上，所述第二像素定义层设置于所述第二金属层上。
在本申请的AMOLED显示面板中，所述第二金属层包括阵列分布的第二导电桥，所述第二像素定义层在对应所述第二导电桥的位置设置有第二过孔，所述多个阴极通过所述第二过孔与所述第二导电桥实现电连接。
在本申请的AMOLED显示面板中，所述第二金属层包括绝缘设置的第二导电桥与第三导电桥，所述第一电极链上的多个第一感应电极通过第三过孔与所述第三导电桥电连接，所述多个阴极通过所述第二过孔与所述第二导电桥电连接。
在本申请的AMOLED显示面板中，所述第二电极链包括多个间隔设置的第二感应电极，多个所述第二感应电极通过连接部电连接。
在本申请的AMOLED显示面板中，所述第二感应电极和所述连接部为一体结构。
在本申请的AMOLED显示面板中，所述第一感应电极、所述第二感应电极、所述连接部和所述多个阴极通过同一道光罩工艺制成。
在本申请的AMOLED显示面板中，所述感应电极是指纹识别电极。
为实现上述目的，本申请还提供一种AMOLED显示面板，包括：
衬底基板；
阳极层，设置在所述衬底基板上；
像素定义层，设置在所述阳极层上，且定义出像素区域；
发光层，对应所述像素区域设置于所述阳极层上；
第二金属层，设置在所述像素定义层上；
阴极层，设置在所述像素定义层和所述第二金属层上；
其中，所述阴极层包括对应所述发光层的多个阴极以及与所述阴极绝缘设置的多个感应电极，多个所述感应电极形成相互绝缘的多个第一电极链和多个第二电极链，所述第一电极链与所述第二电极链相互交叉设置。
在本申请的AMOLED显示面板中，所述阳极层包括相互间隔设置的阳极和第一导电桥，所述像素定义层在对应所述第一导电桥的位置设置有第一过孔，所述第一电极链包括多个第一感应电极，多个所述第一感应电极通过所述第一过孔与所述第一导电桥电连接。
在本申请的AMOLED显示面板中，所述阳极、所述第一导电桥的材料均为透明铟锡金属氧化物材料。
在本申请的AMOLED显示面板中，所述像素定义层包括第一像素定义层与第二像素定义层，所述第一像素定义层设置于所述阳极层上，所述第二金属层设置在所述第一像素定义层上，所述第二像素定义层设置于所述第二金属层上。
在本申请的AMOLED显示面板中，所述第二金属层包括阵列分布的第二导电桥，所述第二像素定义层在对应所述第二导电桥的位置设置有第二过孔，所述多个阴极通过所述第二过孔与所述第二导电桥实现电连接。
在本申请的AMOLED显示面板中，所述第二金属层包括绝缘设置的第二导电桥与第三导电桥，所述第一电极链上的多个第一感应电极通过第三过孔与所述第三导电桥电连接，所述多个阴极通过所述第二过孔与所述第二导电桥电连接。
在本申请的AMOLED显示面板中，所述第二电极链包括多个间隔设置的第二感应电极，多个所述第二感应电极通过连接部电连接。
在本申请的AMOLED显示面板中，所述第二感应电极和所述连接部为一体结构。
在本申请的AMOLED显示面板中，所述第一感应电极、所述第二感应电极、所述连接部和所述多个阴极通过同一道光罩工艺制成。
在本申请的AMOLED显示面板中，所述感应电极是指纹识别电极。
 有益效果
本申请的有益效果为：相较于现有技术的AMOLED显示面板，本申请的AMOLED显示面板，通过将阴极层进行图案化制程，形成图案化的多个阴极与多个感应电极，其中，第二电极链上相邻的第二感应电极通过阴极层直接连接，第一电极链上相邻的第一感应电极通过第一导电桥进行连接；相邻的阴极可通过第二导电桥进行连接。第一感应电极用于与第二感应电极形成电容，以实现指纹识别。这样设计可有效利用屏内空间，将指纹识别嵌入面板内，减少指纹识别在面板边界区所占用的空间，可增加显示区域的占比，进而实现全面屏设计，并且将指纹识别置于显示面板正面，符合适用习惯。
 附图说明
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术的AMOLED显示面板的指纹识别示意图；
图2A为本申请实施例提供的AMOLED显示面板沿第一电极链方向的膜层结构示意图；
图2B为本申请实施例提供的AMOLED显示面板沿第二电极链方向的膜层结构示意图；
图3为本申请实施例提供的AMOLED显示面板屏下指纹识别示意图；
图4为本申请实施例提供的AMOLED显示面板屏下指纹识别各膜层之间连接关系示意图；
图5为本申请又一实施例提供的AMOLED显示面板的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本申请可用以实施的特定实施例。本申请所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本申请，而非用以限制本申请。在图中，结构相似的单元是用以相同标号表示。
本申请针对现有技术的指纹识别设计，指纹识别单元与显示区域相互独立，存在限制屏占比的技术问题，本实施例能够解决该缺陷。
参阅图2A，图2A为本申请实施例提供的AMOLED显示面板沿第一电极链方向的膜层结构示意图。所述AMOLED显示面板包括：衬底基板201；缓冲层202，制备于所述衬底基板201上；薄膜晶体管层，制备于所述缓冲层202上；所述薄膜晶体管层包括依次层叠设置的有源层203、间绝缘层204、第一栅极205、栅绝缘层206、第二栅极207、绝缘层208以及位于所述有源层203两端且贯穿所述间绝缘层204与所述栅绝缘层206以及所述绝缘层208的源极209与漏极210；平坦化层211，制备于所述薄膜晶体管层上；阳极层212，制备于所述平坦化层211上；像素定义层213，制备于所述阳极层212上，且定义出像素区域，所述像素定义层213包括层叠设置的第一像素定义层213A与第二像素定义层213B；发光层214，对应所述像素区域制备于所述阳极层212上；第二金属层218，制备于所述第一像素定义层213A上；阴极层215，制备于所述像素定义层213上。
其中，所述阴极层215包括设置在所述发光层214上的多个阴极215A和与所述阴极215A电绝缘的多个第一感应电极215B以及多个第二感应电极215C（如图2B所示），所述多个第一感应电极215B形成第一电极链（如图3中的309），所述多个第二感应电极215C形成第二电极链（如图3中的308）。
所述第一感应电极215B对应所述像素定义层213的非像素区域与所述阴极215A同层绝缘制备。。所述阳极层212包括对应所述发光层214的多个阳极212A以及与所述阳极212A绝缘设置的多个第一导电桥212B，所述第一像素定义层213A以及所述第二像素定义层213B在对应所述第一导电桥212B的位置设置有第一过孔217，所述第一电极链上的所述第一感应电极215B通过所述第一过孔217与所述第一导电桥212B电性连接，以此形成多条平行的所述第一电极链。优选的，所述阳极212A、所述第一导电桥212B的材料均为透明铟锡金属氧化物材料。
所述第二金属层218包括阵列分布的第二导电桥218A（如图3中的311），所述第二导电桥218A位于相邻两所述阴极215A之间，所述第二像素定义层213B在对应所述第二导电桥218A的位置设置有第二过孔219，相邻两所述阴极215A通过所述第二过孔219与所述第二导电桥218A电性连接，以使整个有效发光区的所述阴极215A保持相同的负电压。所述第二导电桥218A可以是与所述阳极212A一样的材质，或是其他导电材质。
如图2B所示，为本申请实施例提供的AMOLED显示面板沿第二电极链方向的膜层结构示意图；相较于所述第一电极链，所述第二电极链（如图3中的308）上的多个所述第二感应电极215C通过连接部220直接连接，其中，所述第二感应电极215C与所述连接部220为一体结构；具体地，所述第二感应电极215C与所述连接部220经同一道光罩工艺制成；优选的，所述阴极层经过同一道光罩工艺同时形成多个所述阴极215A、多个所述第一感应电极、以及一体式结构的所述第二感应电极215C与所述连接部220。所述连接部220连接一所述第二电极链上的相邻两所述第二感应电极215C，从而形成多条绝缘的所述第二电极链。
如图3所示，为本申请实施例提供的AMOLED显示面板屏下指纹识别示意图。所述AMOLED显示面板包括：衬底基板301，所述衬底基板301上设置有有效发光区302，所述有效发光区302包括多个像素区域303，每一所述像素区域303设置有一图案化的阴极304，与所述阴极304同层制备且间隔设置的有多个感应电极305；多个所述感应电极305形成相互绝缘的第一电极链309和第二电极链308。所述第一电极链309与所述第二电极链308相互绝缘交叉设置。本实施例中，所述感应电极305的形状为围绕所述阴极304的环形，但本申请不对所述感应电极305的大小、样式进行限定。
所述感应电极305包括位于所述第一电极链309上的第一感应电极305B以及位于所述第二电极链308上的第二感应电极305A。其中，相邻两所述第二感应电极305A通过连接部310连接。所述阴极304与所述感应电极305以及所述连接部310是通过同一道光罩工艺制成的，所述连接部310将所述第二感应电极305A连接成多条相互独立的所述第二电极链308。第一导电桥306与所述感应电极305绝缘设置，且位于相邻两所述第一感应电极305B之间，并通过第一过孔将所述第一感应电极305B连接成多条相互独立的所述第一电极链309。其中，所述第一导电桥306由所述阳极层形成。
相邻两所述阴极304之间通过所述像素定义层中的所述第二过孔与第二导电桥307进行电性连接；优选的，对应所述第一电极链309的所述阴极304与对应所述第二电极链308上相邻的所述阴极304相互连接。其中，所述第二导电桥307可以由所述阳极层或所述第二金属层形成。所述第一电极链309与所述第二电极链308相互独立且交叉设置。在本实施例中，所述感应电极305是指纹识别电极，一所述第一感应电极305B用于与所述第二感应电极305A形成电容，以实现指纹识别。
如图4所示，为本申请实施例提供的AMOLED显示面板屏下指纹识别各膜层之间连接关系示意图。包括：阴极403，正对于发光层407设置，且相邻两所述阴极403通过第二过孔402与第二导电桥401连接；第一感应电极409，通过第一过孔406与第一导电桥405连接；第二感应电极408，通过与其同层制备的连接部404进行连接；其中，所述第一导电桥405与所述第二导电桥401绝缘设置。一所述第一感应电极409与相邻所述第二感应电极408之间形成电容，以实现指纹识别。
如图5所示，为本申请又一实施例提供的AMOLED显示面板的结构示意图，本实施例相较于上述实施例的区别特征在于：在所述AMOLED显示面板的薄膜晶体管层501上制备有阵列分布的阳极502；在所述阳极502上制备有像素定义层503，并定义出像素区域，所述像素定义层503包括层叠设置的第一像素定义层503A与第二像素定义层503B；第二金属层506设置于所述第一像素定义层503A表面，所述第二金属层506包括第二导电桥506A以及与所述第二导电桥506A绝缘设置的第三导电桥506B；所述第二像素定义层503B在对应所述第三导电桥506B的位置设置有第三过孔508，在对应所述第二导电桥506A的位置设置有第二过孔507；所述像素区域设置有发光层504；所述发光层504上设置有阴极层505，所述阴极层505包括多个阴极505A以及多条绝缘设置的所述第一电极链（如图3中的309）和所述第二电极链（如图3中的308）；其中，所述第一电极链上的相邻两第一感应电极505B通过所述第三过孔508与所述第三导电桥506B电性连接；相邻两所述阴极505A通过所述第二过孔507与所述第二导电桥506A电性连接。
本实施例的所述AMOLED显示面板的其他结构与上述实施例中结构的描述一致，此处不再赘述。
相较于现有技术的AMOLED显示面板，本申请的AMOLED显示面板，通过将发光二极管中阴极层进行图案化制程，该制程除给每个像素的二极管提供发光电压外，二极管与二极管之间设计感应电极，第二电极链上相邻的第二感应电极通过阴极层图案化形成的连接线直接连接，第一电极链上相邻的第一感应电极通过打孔到与阳极同层制备的第一导电桥进行连接；相邻的阴极可打孔到像素定义层中增设的第二导电桥进行连接。第一感应电极用于与第二感应电极形成电容，以实现指纹识别。这样设计可有效利用屏内空间，将指纹识别嵌入面板内，减少指纹识别在面板边界区所占用的空间，可增加显示区域的占比，进而实现全面屏设计，并且将指纹识别置于显示面板正面，符合适用习惯。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种AMOLED显示面板，其包括：
    衬底基板；
    阳极层，设置在所述衬底基板上；
    像素定义层，设置在所述阳极层上，且定义出像素区域；
    发光层，对应所述像素区域设置于所述阳极层上；
    第二金属层，设置在所述像素定义层上；
    阴极层，设置在所述像素定义层和所述第二金属层上；
    其中，所述阴极层包括对应所述发光层的多个阴极以及与所述阴极绝缘设置的多个感应电极，多个所述感应电极形成相互绝缘的多个第一电极链和多个第二电极链。
  2. 根据权利要求1所述的AMOLED显示面板，其中，所述阳极层包括相互间隔设置的阳极和第一导电桥，所述像素定义层在对应所述第一导电桥的位置设置有第一过孔，所述第一电极链包括多个第一感应电极，多个所述第一感应电极通过所述第一过孔与所述第一导电桥电连接。
  3. 根据权利要求2所述的AMOLED显示面板，其中，所述阳极、所述第一导电桥的材料均为透明铟锡金属氧化物材料。
  4. 根据权利要求1所述的AMOLED显示面板，其中，所述像素定义层包括第一像素定义层与第二像素定义层，所述第一像素定义层设置于所述阳极层上，所述第二金属层设置在所述第一像素定义层上，所述第二像素定义层设置于所述第二金属层上。
  5. 根据权利要求4所述的AMOLED显示面板，其中，所述第二金属层包括阵列分布的第二导电桥，所述第二像素定义层在对应所述第二导电桥的位置设置有第二过孔，所述多个阴极通过所述第二过孔与所述第二导电桥实现电连接。
  6. 根据权利要求4所述的AMOLED显示面板，其中，所述第二金属层包括绝缘设置的第二导电桥与第三导电桥，所述第一电极链上的多个第一感应电极通过第三过孔与所述第三导电桥电连接，所述多个阴极通过所述第二过孔与所述第二导电桥电连接。
  7. 根据权利要求2所述的AMOLED显示面板，其中，所述第二电极链包括多个间隔设置的第二感应电极，多个所述第二感应电极通过连接部电连接。
  8. 根据权利要求7所述的AMOLED显示面板，其中，所述第二感应电极和所述连接部为一体结构。
  9. 根据权利要求7所述的AMOLED显示面板，其中，所述第一感应电极、所述第二感应电极、所述连接部和所述多个阴极通过同一道光罩工艺制成。
  10. 根据权利要求1所述的AMOLED显示面板，其中，所述感应电极是指纹识别电极。
  11. 一种AMOLED显示面板，其包括：
    衬底基板；
    阳极层，设置在所述衬底基板上；
    像素定义层，设置在所述阳极层上，且定义出像素区域；
    发光层，对应所述像素区域设置于所述阳极层上；
    第二金属层，设置在所述像素定义层上；
    阴极层，设置在所述像素定义层和所述第二金属层上；
    其中，所述阴极层包括对应所述发光层的多个阴极以及与所述阴极绝缘设置的多个感应电极，多个所述感应电极形成相互绝缘的多个第一电极链和多个第二电极链，所述第一电极链与所述第二电极链相互交叉设置。
  12. 根据权利要求11所述的AMOLED显示面板，其中，所述阳极层包括相互间隔设置的阳极和第一导电桥，所述像素定义层在对应所述第一导电桥的位置设置有第一过孔，所述第一电极链包括多个第一感应电极，多个所述第一感应电极通过所述第一过孔与所述第一导电桥电连接。
  13. 根据权利要求12所述的AMOLED显示面板，其中，所述阳极、所述第一导电桥的材料均为透明铟锡金属氧化物材料。
  14. 根据权利要求11所述的AMOLED显示面板，其中，所述像素定义层包括第一像素定义层与第二像素定义层，所述第一像素定义层设置于所述阳极层上，所述第二金属层设置在所述第一像素定义层上，所述第二像素定义层设置于所述第二金属层上。
  15. 根据权利要求14所述的AMOLED显示面板，其中，所述第二金属层包括阵列分布的第二导电桥，所述第二像素定义层在对应所述第二导电桥的位置设置有第二过孔，所述多个阴极通过所述第二过孔与所述第二导电桥实现电连接。
  16. 根据权利要求14所述的AMOLED显示面板，其中，所述第二金属层包括绝缘设置的第二导电桥与第三导电桥，所述第一电极链上的多个第一感应电极通过第三过孔与所述第三导电桥电连接，所述多个阴极通过所述第二过孔与所述第二导电桥电连接。
  17. 根据权利要求12所述的AMOLED显示面板，其中，所述第二电极链包括多个间隔设置的第二感应电极，多个所述第二感应电极通过连接部电连接。
  18. 根据权利要求17所述的AMOLED显示面板，其中，所述第二感应电极和所述连接部为一体结构。
  19. 根据权利要求17所述的AMOLED显示面板，其中，所述第一感应电极、所述第二感应电极、所述连接部和所述多个阴极通过同一道光罩工艺制成。
  20. 根据权利要求11所述的AMOLED显示面板，其中，所述感应电极是指纹识别电极。
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