WO2019218493A1 - Oled显示面板及oled显示器 - Google Patents

Oled显示面板及oled显示器 Download PDF

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Publication number
WO2019218493A1
WO2019218493A1 PCT/CN2018/098273 CN2018098273W WO2019218493A1 WO 2019218493 A1 WO2019218493 A1 WO 2019218493A1 CN 2018098273 W CN2018098273 W CN 2018098273W WO 2019218493 A1 WO2019218493 A1 WO 2019218493A1
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WO
WIPO (PCT)
Prior art keywords
switching unit
light emitting
thin film
film transistor
oled display
Prior art date
Application number
PCT/CN2018/098273
Other languages
English (en)
French (fr)
Inventor
李骏
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/302,156 priority Critical patent/US11068687B1/en
Publication of WO2019218493A1 publication Critical patent/WO2019218493A1/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
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to an OLED display panel and an OLED display.
  • a comprehensive screen can greatly enhance the screen ratio of mobile phones, and is one of the development directions of mobile phone displays. Integrating the fingerprint recognition technology into the screen of the mobile phone can make the fingerprint recognition area that does not emit light become the display area, which can increase the proportion of the mobile phone screen. At present, the fingerprint recognition technology is more difficult to integrate in the display screen, and the display quality of the fingerprint recognition area in the screen may be different from the normal display area, and it is necessary to compensate the pixel display of the fingerprint recognition area to prevent the fingerprint recognition area from being displayed abnormally. .
  • the patent provides an in-plane fingerprint identification scheme, which can integrate the fingerprint recognition area into the AMOLED display screen to increase the screen ratio of the AMOLED display screen.
  • the surface of the AMOLED is a metal electrode, the surface fingerprint information is shielded, so that the display screen cannot receive the display information, and thus the fingerprint recognition cannot be completed.
  • An object of the embodiments of the present invention is to provide an OLED display panel and an OLED display, which have the effect of increasing the screen ratio.
  • An embodiment of the present invention provides an OLED display panel, including:
  • a light emitting layer having a first region and a second region
  • the common electrode layer including a first electrode and a plurality of multiplex electrodes insulated from each other, the first electrode being opposite to the first region, as the first a common electrode of a region, the plurality of multiplex electrodes being opposite to the second region to serve as a fingerprint signal collecting electrode and a common electrode of the second region;
  • a multiplexing function line disposed on the light emitting layer, wherein the multiplexing function line is connected to the multiplexing electrode to detect a capacitance change formed by the multiplexing electrode and the finger to generate a fingerprint signal; wherein the complex And connecting, by the function line, the light emitting layer and the external compensation circuit to compensate the gray-scale current of the light-emitting layer;
  • a fingerprint identification chip the fingerprint identification chip being connected to the multiplexing function line.
  • the OLED display panel of the present invention further includes a first switching unit, a second switching unit, and a third switching unit, wherein an input end of the first switching unit is connected to a voltage signal, and an output of the first switching unit An input end of the light emitting layer and the second switching unit is connected and connected to the multiplexing electrode, and an output end of the second switching unit is connected to the multiplexing function line, and the multiplexing function line
  • the light emitting layer is connected by the third switching unit.
  • the OLED display panel includes an external compensation phase, a fingerprint recognition phase, and an illumination phase;
  • the first switching unit and the second switching unit are turned off, the third switching unit is turned on, and the multiplexing function line inputs a compensation current to the light emitting layer;
  • the first switch unit is turned on, the second switch unit is turned off, and the third switch unit is turned off;
  • the first switching unit is turned on, the second switching unit is turned off, and the third switching unit is turned off.
  • the luminescent layer includes a plurality of illuminating units, each illuminating unit includes: a first thin film transistor, a second thin film transistor, a third thin film transistor, a storage capacitor, and an OLED light emitting diode;
  • An input end of the second thin film transistor is connected to the data line, an output end of the second thin film transistor, one end of the storage capacitor, and a gate of the third thin film transistor are connected, and the other end of the storage capacitor
  • An input end of the third thin film transistor is connected and connected to a voltage VDD, and an output end of the third thin film transistor, an input end of the third thin film transistor, and an output end of the third switching unit are connected, the third An input end of the switch unit is connected to the multiplexed function line, an output end of the first thin film transistor is connected to one end of the OLED light emitting diode, and the other end of the OLED light emitting diode and the output of the first switch unit
  • the first thin film transistor, the second thin film transistor, and the third thin film transistor are all N-type field effect transistors.
  • the first switching unit, the second switching unit, and the third switching unit are all N-type field effect transistors.
  • the method further includes a gray-scale current compensation chip, and the gray-scale current compensation chip is connected to the multiplexing function line.
  • An embodiment of the present invention further provides an OLED display panel, including:
  • a light emitting layer having a first region and a second region
  • the common electrode layer including a first electrode and a plurality of multiplex electrodes insulated from each other, the first electrode being opposite to the first region, as the first a common electrode of a region, the plurality of multiplex electrodes being opposite to the second region to serve as a fingerprint signal collecting electrode and a common electrode of the second region;
  • a multiplexing function line disposed on the light emitting layer, wherein the multiplexing function line is connected to the multiplexing electrode to detect a capacitance change formed by the multiplexing electrode and the finger to generate a fingerprint signal.
  • the multiplexing function line is further connected to the light emitting layer and an external compensation circuit to compensate for the gray scale current of the light emitting layer.
  • the OLED display panel of the present invention further includes a first switching unit, a second switching unit, and a third switching unit, wherein an input end of the first switching unit is connected to a voltage signal, and an output of the first switching unit An input end of the light emitting layer and the second switching unit is connected and connected to the multiplexing electrode, and an output end of the second switching unit is connected to the multiplexing function line, and the multiplexing function line
  • the light emitting layer is connected by the third switching unit.
  • the OLED display panel includes an external compensation phase, a fingerprint recognition phase, and an illumination phase;
  • the first switching unit and the second switching unit are turned off, the third switching unit is turned on, and the multiplexing function line inputs a compensation current to the light emitting layer;
  • the first switch unit is turned on, the second switch unit is turned off, and the third switch unit is turned off;
  • the first switching unit is turned on, the second switching unit is turned off, and the third switching unit is turned off.
  • the luminescent layer includes a plurality of illuminating units, each illuminating unit includes: a first thin film transistor, a second thin film transistor, a third thin film transistor, a storage capacitor, and an OLED light emitting diode;
  • An input end of the second thin film transistor is connected to the data line, an output end of the second thin film transistor, one end of the storage capacitor, and a gate of the third thin film transistor are connected, and the other end of the storage capacitor
  • An input end of the third thin film transistor is connected and connected to a voltage VDD, and an output end of the third thin film transistor, an input end of the third thin film transistor, and an output end of the third switching unit are connected, the third An input end of the switch unit is connected to the multiplexed function line, an output end of the first thin film transistor is connected to one end of the OLED light emitting diode, and the other end of the OLED light emitting diode and the output of the first switch unit
  • the first thin film transistor, the second thin film transistor, and the third thin film transistor are all N-type field effect transistors.
  • the first switching unit, the second switching unit, and the third switching unit are all N-type field effect transistors.
  • a fingerprint identification chip is further included, and the fingerprint identification chip is connected to the multiplexing function line.
  • a gray-scale current compensation chip is further included, and the gray-scale current compensation chip is connected to the multiplexing function line.
  • An OLED display comprising an OLED display panel, the OLED display panel comprising:
  • a light emitting layer having a first region and a second region
  • the common electrode layer including a first electrode and a plurality of multiplex electrodes insulated from each other, the first electrode being opposite to the first region, as the first a common electrode of a region, the plurality of multiplex electrodes being opposite to the second region to serve as a fingerprint signal collecting electrode and a common electrode of the second region;
  • a multiplexing function line disposed on the light emitting layer, wherein the multiplexing function line is connected to the multiplexing electrode to detect a capacitance change formed by the multiplexing electrode and the finger to generate a fingerprint signal.
  • the multiplexing function line is further connected to the light emitting layer and an external compensation circuit to compensate for the gray scale current of the light emitting layer.
  • the OLED display of the present invention further includes a first switching unit, a second switching unit, and a third switching unit, wherein an input end of the first switching unit is connected to a voltage signal, and an output end of the first switching unit
  • the illuminating layer and the input end of the second switching unit are connected and connected to the multiplexed electrode, and the output end of the second switching unit is connected to the multiplexed function line, and the multiplexed function line passes
  • the third switching unit is connected to the light emitting layer.
  • the OLED display panel includes an external compensation phase, a fingerprint recognition phase, and an illumination phase;
  • the first switching unit and the second switching unit are turned off, the third switching unit is turned on, and the multiplexing function line inputs a compensation current to the light emitting layer;
  • the first switch unit is turned on, the second switch unit is turned off, and the third switch unit is turned off;
  • the first switching unit is turned on, the second switching unit is turned off, and the third switching unit is turned off.
  • the present invention divides the common electrode layer into a first electrode and a plurality of multiplex electrodes which are insulated from each other, and the first electrode is opposed to the first region as a common electrode of the first region.
  • the plurality of multiplexing electrodes are opposite to the second region to serve as a fingerprint signal collecting electrode and a common electrode of the second region;
  • a multiplexing function line is disposed on the light emitting layer, and the multiplexing function is The line is connected to the multiplexed electrode to detect a change in capacitance formed by the multiplexed electrode and the finger to generate a fingerprint signal, so that both the fingerprint collection and the normal display can be realized in the second region, which has the beneficial effect of increasing the screen ratio. effect.
  • FIG. 1 is a schematic structural diagram of an OLED display panel according to some embodiments of the present invention.
  • FIG. 2 is a partial circuit schematic diagram of an OLED display panel in an embodiment of the present invention.
  • FIG. 3 is a timing chart of driving of an OLED display panel according to an embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • Connected, or integrally connected may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • FIG. 1 is a structural diagram of an OLED display panel according to some embodiments of the present invention.
  • the OLED display panel includes a light emitting layer 10 and a common electrode layer 20 and a multiplexing function line 25 disposed on the light emitting layer 10 .
  • the light emitting layer 10 includes a substrate 11, a pixel electrode 12 on the substrate, and a plurality of light emitting units 10a.
  • the luminescent layer 10 has a first region and a second region.
  • the common electrode layer 20 includes a first electrode 22 and a plurality of multiplex electrodes 21 insulated from each other, and the first electrode 22 is opposite to the first region to be used as a common electrode of the first region.
  • the multiplex electrode 21 is opposed to the second region to serve as an acquisition electrode of the fingerprint signal and a common electrode of the second region.
  • the first electrode 22 is located in a normal display area, and the plurality of multiplex electrodes are arranged in a uniform array, and are located in the fingerprint recognition and display composite area.
  • the multiplexed functional line 25 is disposed on the luminescent layer 10, and the multiplexed functional line 25 is connected to the multiplexed electrode 21 to detect a change in capacitance of the multiplexed electrode 21 and the finger to generate a fingerprint signal.
  • the multiplexed functional line 25 is also coupled to the luminescent layer 10 and to an external compensation circuit to compensate for the gray scale current of the luminescent layer 10.
  • the OLED display panel further includes a first switching unit 22, a second switching unit 23, and a third switching unit 24.
  • the input end of the first switch unit 22 is connected with a voltage signal, and the output end of the first switch unit 22, the light-emitting layer 10 and the input end of the second switch unit 23 are connected and connected to the multiplex electrode 21, the second switch An output of the unit 23 is connected to the multiplexed function line 25, and the multiplexed function line 25 is connected to the luminescent layer 10 via the third switching unit 24.
  • each of the light emitting units 10a includes a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, a storage capacitor Cs, and an OLED light emitting diode 13.
  • the input end of the second thin film transistor T2 is connected to the data line to access the data voltage signal, the output end of the second thin film transistor T2, one end of the storage capacitor Cs and the gate of the third thin film transistor T3 are connected, and the storage capacitor Cs is connected.
  • the other end of the third thin film transistor T3 is connected to the input terminal of the third thin film transistor T3, the output end of the third thin film transistor T3, and the output end of the third switching unit 24 Connecting, the input end of the third switching unit 24 is connected to the multiplexing function line 25, and the output end of the first thin film transistor T1 is connected to one end of the OLED light emitting diode 13, the OLED light emitting diode The other end of the 13 is connected to the output end of the first switching unit 22 and the input end of the second switching unit 23, respectively, and is connected to the multiplex electrode 21.
  • the first thin film transistor T1, the second thin film transistor T2, and the third thin film transistor T3 are all N-type field effect transistors.
  • the first switching unit 22, the second switching unit 23, and the third switching unit 24 are all N-type field effect transistors.
  • the OLED display panel further includes a fingerprint recognition chip coupled to the multiplexed function line 25.
  • the OLED display panel further includes a gray scale current compensation chip coupled to the multiplexing function line to input a gray scale compensation current to the light emitting layer.
  • the OLED display panel includes an external compensation phase, a fingerprint recognition phase, and an illumination phase.
  • the first switching unit and the second switching unit are turned off, the third switching unit is turned on, and the multiplexing function line inputs a compensation current to the light emitting layer.
  • S1 is a low level
  • S2 is a high level
  • S3 is a low level.
  • T1, T2, T3, and T4 are turned on, and T5 and T6 are turned off.
  • the data voltage signal is written to the gate of T3, and the multiplexed function line detects the current of T3.
  • the detected current is greater than the corresponding gray-scale target current
  • the voltage value of the data voltage signal is increased to reduce the current of T3; Conversely, the voltage value of the data voltage signal is decreased to increase the current of T3.
  • the external compensation is completed.
  • the first switching unit is turned on, the second switching unit is turned on, and the third switching unit is turned off.
  • S1 is at a high level
  • S2 is at a low level
  • S3 is at a high level.
  • T6 is turned on and the other thin film transistors are turned off.
  • the multiplexed electrode and the finger constitute a capacitor, and the multiplexed function line recognizes the fingerprint by detecting a change in capacitance.
  • the first switching unit is turned on, the second switching unit is turned off, and the third switching unit is turned off.
  • S1 and S2 are at a high level
  • S3 is at a low level.
  • T3, T1, and T5 are turned on, and other thin film transistors are turned off.
  • T3 controls OLED illumination.
  • the present invention divides the common electrode layer into a first electrode and a plurality of multiplex electrodes which are insulated from each other, and the first electrode is opposed to the first region as a common electrode of the first region.
  • the plurality of multiplexing electrodes are opposite to the second region to serve as a fingerprint signal collecting electrode and a common electrode of the second region;
  • a multiplexing function line is disposed on the light emitting layer, and the multiplexing function is The line is connected to the multiplexed electrode to detect a change in capacitance formed by the multiplexed electrode and the finger to generate a fingerprint signal, so that both the fingerprint collection and the normal display can be realized in the second region, which has the beneficial effect of increasing the screen ratio. effect.
  • the present invention also provides an OLED display comprising the OLED display panel described in the above embodiments.
  • the OLED display panel provided by the embodiment of the present invention is described in detail.
  • the principles and embodiments of the present invention are described in detail herein.
  • the description of the above embodiments is only for facilitating understanding of the present invention.
  • the present invention is not limited by the scope of the present invention.

Abstract

本发明提供了一种OLED显示面板，包括：发光层，发光层具有第一区域以及第二区域；公共电极层，公共电极层包括相互绝缘的第一电极和多个复用电极，第一电极与第一区域相对，多个复用电极与第二区域相对；复用功能线，与复用电极连接以探测复用电极与手指构成的电容变化从而生成指纹信号。本发明具有提高屏占比的效果。

Description

OLED显示面板及OLED显示器 技术领域
本发明涉及液晶显示领域，具体涉及一种OLED显示面板及OLED显示器。
 背景技术
全面屏可以极大的提升手机的屏占比，是手机显示屏的发展方向之一。将指纹识别技术集成于手机屏幕内，可以让原本不发光的指纹识别区变成显示区，能增加手机屏占比。目前，指纹识别技术集成于显示屏内的难度较大，且指纹识别区在屏幕内的显示画质可能和正常显示区有差异，需要补偿指纹识别区的像素显示，避免指纹识别区显示不正常。本专利提供了一种面内指纹识别方案，该方案能将指纹识别区集成到AMOLED显示屏内，增大AMOLED显示屏的屏占比。
由于AMOLED表面是一层金属电极，会屏蔽表面指纹信息，使得显示屏无法接收到显示信息，因而无法完成指纹识别。
因此，现有技术存在缺陷，急需改进。
 技术问题
本发明实施例的目的是提供一种OLED显示面板及OLED显示器，具有提高屏占比的效果。
 技术解决方案
本发明实施例提供一种OLED显示面板，其包括：
发光层，所述发光层具有第一区域以及第二区域；
公共电极层，其设置于所述发光层上，所述公共电极层包括相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；
复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号；其中，所述复用功能线还与所述发光层连接以及外部补偿电路连接，以对所述发光层的灰阶电流进行补偿；
指纹识别芯片，所述指纹识别芯片与所述复用功能线连接。
在本发明所述的OLED显示面板中，还包括第一开关单元、第二开关单元以及第三开关单元，所述第一开关单元的输入端接入电压信号，所述第一开关单元的输出端、所述发光层以及所述第二开关单元的输入端连接并与所述复用电极连接，所述第二开关单元的输出端与所述复用功能线连接，所述复用功能线通过所述第三开关单元与所述发光层连接。
在本发明所述的OLED显示面板中，OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段；
外部补偿阶段，所述第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层；
指纹识别阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭；
发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。
在本发明所述的OLED显示面板中，所述发光层包括多个发光单元，每一发光单元包括：第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管、存储电容以及OLED发光二极管；所述第二薄膜晶体管的输入端与数据线连接，所述第二薄膜晶体管的输出端、所述存储电容的一端以及所述第三薄膜晶体管的栅极连接，所述存储电容的另一端、所述第三薄膜晶体管的输入端连接并接入电压VDD，所述第三薄膜晶体管的输出端、所述第三薄膜晶体管的输入端以及所述第三开关单元的输出端连接，所述第三开关单元的输入端与所述复用功能线连接，所述第一薄膜晶体管的输出端与所述OLED发光二极管的一端连接，所述OLED发光二极管的另一端、所述第一开关单元的输出端以及所述第二开关单元的输入端连接并与所述复用电极连接。
在本发明所述的OLED显示面板中，所述第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管均为N型场效应晶体管。
在本发明所述的OLED显示面板中，所述第一开关单元、所述第二开关单元以及所述第三开关单元均为N型场效应晶体管。
在本发明所述的OLED显示面板中，其还包括灰阶电流补偿芯片，所述灰阶电流补偿芯片与所述复用功能线连接。
本发明实施例还提供一种OLED显示面板，其包括：
发光层，所述发光层具有第一区域以及第二区域；
公共电极层，其设置于所述发光层上，所述公共电极层包括相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；
复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号。
在本发明所述的OLED显示面板中，所述复用功能线还与所述发光层连接以及外部补偿电路连接，以对所述发光层的灰阶电流进行补偿。
在本发明所述的OLED显示面板中，还包括第一开关单元、第二开关单元以及第三开关单元，所述第一开关单元的输入端接入电压信号，所述第一开关单元的输出端、所述发光层以及所述第二开关单元的输入端连接并与所述复用电极连接，所述第二开关单元的输出端与所述复用功能线连接，所述复用功能线通过所述第三开关单元与所述发光层连接。
在本发明所述的OLED显示面板中，OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段；
外部补偿阶段，所述第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层；
指纹识别阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭；
发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。
在本发明所述的OLED显示面板中，所述发光层包括多个发光单元，每一发光单元包括：第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管、存储电容以及OLED发光二极管；所述第二薄膜晶体管的输入端与数据线连接，所述第二薄膜晶体管的输出端、所述存储电容的一端以及所述第三薄膜晶体管的栅极连接，所述存储电容的另一端、所述第三薄膜晶体管的输入端连接并接入电压VDD，所述第三薄膜晶体管的输出端、所述第三薄膜晶体管的输入端以及所述第三开关单元的输出端连接，所述第三开关单元的输入端与所述复用功能线连接，所述第一薄膜晶体管的输出端与所述OLED发光二极管的一端连接，所述OLED发光二极管的另一端、所述第一开关单元的输出端以及所述第二开关单元的输入端连接并与所述复用电极连接。
在本发明所述的OLED显示面板中，所述第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管均为N型场效应晶体管。
在本发明所述的OLED显示面板中，所述第一开关单元、所述第二开关单元以及所述第三开关单元均为N型场效应晶体管。
在本发明所述的OLED显示面板中，还包括指纹识别芯片，所述指纹识别芯片与所述复用功能线连接。
在本发明所述的OLED显示面板中，还包括灰阶电流补偿芯片，所述灰阶电流补偿芯片与所述复用功能线连接。
一种OLED显示器，其包括OLED显示面板，所述OLED显示面板包括：
发光层，所述发光层具有第一区域以及第二区域；
公共电极层，其设置于所述发光层上，所述公共电极层包括相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；
复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号。
在本发明所述的OLED显示器中，所述复用功能线还与所述发光层连接以及外部补偿电路连接，以对所述发光层的灰阶电流进行补偿。
在本发明所述的OLED显示器中，还包括第一开关单元、第二开关单元以及第三开关单元，所述第一开关单元的输入端接入电压信号，所述第一开关单元的输出端、所述发光层以及所述第二开关单元的输入端连接并与所述复用电极连接，所述第二开关单元的输出端与所述复用功能线连接，所述复用功能线通过所述第三开关单元与所述发光层连接。
在本发明所述的OLED显示器中，OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段；
外部补偿阶段，所述第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层；
指纹识别阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭；
发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。
 有益效果
由上可知，本发明通过将公共电极层分为相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号，从而使得在第二区域既可以实现指纹采集也可以实现正常显示，具有提高屏占比的有益效果。
 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为本发明一些实施例中的OLED显示面板的结构示意图。
图2为本发明实施例中的OLED显示面板的局部电路原理图。
图3为本发明实施例中的OLED显示面板的驱动时序图。
 本发明的最佳实施方式
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
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。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参阅图1，图1是本发明一些实施例中的OLED显示面板的结构图，OLED显示面板包括：发光层10以及设置于发光层10上的公共电极层20和复用功能线25。
其中，该发光层10包括基板11、位于基板上的像素电极12以及多个发光单元10a。该发光层10具有第一区域以及第二区域。
其中，该公共电极层20包括相互绝缘的第一电极22和多个复用电极21，所述第一电极22与所述第一区域相对，以作为所述第一区域的公共电极使用，所述复用电极21与所述第二区域相对，以作为指纹信号的采集电极以及所述第二区域的公共电极。该第一电极22位于正常显示区域，该多个复用电极呈均匀阵列排布，位于指纹识别及显示复合区域。
其中，该复用功能线25设置于所述发光层10上，该复用功能线25与复用电极21连接以探测所述复用电极21与手指构成的电容变化从而生成指纹信号。
在一些实施例中，该复用功能线25还与所述发光层10连接以及外部补偿电路连接，以对所述发光层10的灰阶电流进行补偿。
在一些实施例中，该OLED显示面板还包括第一开关单元22、第二开关单元23以及第三开关单元24。该第一开关单元22的输入端加入电压信号，该第一开关单元22的输出端、发光层10以及第二开关单元23的输入端连接并与该复用电极21连接，所述第二开关单元23的输出端与所述复用功能线25连接，所述复用功能线25通过所述第三开关单元24与所述发光层10连接。
具体地，每一发光单元10a包括：第一薄膜晶体管T1、第二薄膜晶体管T2、第三薄膜晶体管T3、存储电容Cs以及OLED发光二极管13。
该第二薄膜晶体管T2的输入端与数据线连接以接入数据电压信号，该第二薄膜晶体管T2的输出端、存储电容Cs的一端以及第三薄膜晶体管T3的栅极连接，存储电容Cs的另一端、所述第三薄膜晶体管T3的输入端连接并接入电压VDD，该第三薄膜晶体管T3的输出端、该第三薄膜晶体管T3的输入端以及所述第三开关单元24的输出端连接，所述第三开关单元24的输入端与所述复用功能线25连接，所述第一薄膜晶体管T1的输出端与所述OLED发光二极管13的一端连接，所述所述OLED发光二极管13的另一端分别与所述第一开关单元22的输出端以及所述第二开关单元23的输入端连接并与该复用电极21连接。
在一些实施例中，第一薄膜晶体管T1、第二薄膜晶体管T2、第三薄膜晶体管T3均为N型场效应晶体管。
在一些实施例中，第一开关单元22、所述第二开关单元23以及所述第三开关单元24均为N型场效应晶体管。
在一些实施例中，该OLED显示面板还包括指纹识别芯片，所述指纹识别芯片与所述复用功能线25连接。
在一些实施例中，该OLED显示面板还包括灰阶电流补偿芯片，所述灰阶电流补偿芯片与所述复用功能线连接，以输入灰阶补偿电流给该发光层。
具体地，请同时参照图3，该OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段。
其中，在外部补偿阶段，在第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层。具体地，S1为低电平、S2为高电平、S3为低电平。此时，T1、T2、T3、T4导通，T5和T6截止。数据电压信号写入到T3的栅极上，复用功能线探测T3的电流，当探测的电流大于对应灰阶目标电流时，则增大数据电压信号的电压值，来减小T3的电流；反之，则减小数据电压信号的电压值，以增大T3的电流。当探测到的T3的电流和对应灰阶目标电流大小一致时，则外部补偿完成。
其中，在指纹识别阶段，该第一开关单元导通，该第二开关单元导通，该第三开关单元关闭。具体地，S1为高电平，S2为低电平，S3为高电平。此时，T6打开，其他薄膜晶体管关闭。复用电极和手指构成电容，复用功能线通过探测电容变化，来识别指纹。
发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。具体地，S1、S2为高电平，S3为低电平。此时，T3、T1和T5打开，其他薄膜晶体管关闭。T3控制OLED发光。
由上可知，本发明通过将公共电极层分为相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号，从而使得在第二区域既可以实现指纹采集也可以实现正常显示，具有提高屏占比的有益效果。
本发明还提供了一种OLED显示器，包括上述实施例所述的OLED显示面板。
以上对本发明实施例提供的OLED显示面板进行了详细介绍，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。同时，对于本领域的技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (20)

  1. 一种OLED显示面板，其包括：
    发光层，所述发光层具有第一区域以及第二区域；
    公共电极层，其设置于所述发光层上，所述公共电极层包括相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；
    复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号；其中，所述复用功能线还与所述发光层连接以及外部补偿电路连接，以对所述发光层的灰阶电流进行补偿；
    指纹识别芯片，所述指纹识别芯片与所述复用功能线连接。
  2. 根据权利要求1所述的OLED显示面板，其中，还包括第一开关单元、第二开关单元以及第三开关单元，所述第一开关单元的输入端接入电压信号，所述第一开关单元的输出端、所述发光层以及所述第二开关单元的输入端连接并与所述复用电极连接，所述第二开关单元的输出端与所述复用功能线连接，所述复用功能线通过所述第三开关单元与所述发光层连接。
  3. 根据权利要求2所述的OLED显示面板，其中，OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段；
    外部补偿阶段，所述第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层；
    指纹识别阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭；
    发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。
  4. 根据权利要求3所述的OLED显示面板，其中，所述发光层包括多个发光单元，每一发光单元包括：第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管、存储电容以及OLED发光二极管；所述第二薄膜晶体管的输入端与数据线连接，所述第二薄膜晶体管的输出端、所述存储电容的一端以及所述第三薄膜晶体管的栅极连接，所述存储电容的另一端、所述第三薄膜晶体管的输入端连接并接入电压VDD，所述第三薄膜晶体管的输出端、所述第三薄膜晶体管的输入端以及所述第三开关单元的输出端连接，所述第三开关单元的输入端与所述复用功能线连接，所述第一薄膜晶体管的输出端与所述OLED发光二极管的一端连接，所述OLED发光二极管的另一端、所述第一开关单元的输出端以及所述第二开关单元的输入端连接并与所述复用电极连接。
  5. 根据权利要求4所述的OLED显示面板，其中，所述第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管均为N型场效应晶体管。
  6. 根据权利要求4所述的OLED显示面板，其中，所述第一开关单元、所述第二开关单元以及所述第三开关单元均为N型场效应晶体管。
  7. 根据权利要求1所述的OLED显示面板，其还包括灰阶电流补偿芯片，所述灰阶电流补偿芯片与所述复用功能线连接。
  8. 一种OLED显示面板，其包括：
    发光层，所述发光层具有第一区域以及第二区域；
    公共电极层，其设置于所述发光层上，所述公共电极层包括相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；
    复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号。
  9. 根据权利要求8所述的OLED显示面板，其中，所述复用功能线还与所述发光层连接以及外部补偿电路连接，以对所述发光层的灰阶电流进行补偿。
  10. 根据权利要求9所述的OLED显示面板，其中，还包括第一开关单元、第二开关单元以及第三开关单元，所述第一开关单元的输入端接入电压信号，所述第一开关单元的输出端、所述发光层以及所述第二开关单元的输入端连接并与所述复用电极连接，所述第二开关单元的输出端与所述复用功能线连接，所述复用功能线通过所述第三开关单元与所述发光层连接。
  11. 根据权利要求10所述的OLED显示面板，其中，OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段；
    外部补偿阶段，所述第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层；
    指纹识别阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭；
    发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。
  12. 根据权利要求11所述的OLED显示面板，其中，所述发光层包括多个发光单元，每一发光单元包括：第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管、存储电容以及OLED发光二极管；所述第二薄膜晶体管的输入端与数据线连接，所述第二薄膜晶体管的输出端、所述存储电容的一端以及所述第三薄膜晶体管的栅极连接，所述存储电容的另一端、所述第三薄膜晶体管的输入端连接并接入电压VDD，所述第三薄膜晶体管的输出端、所述第三薄膜晶体管的输入端以及所述第三开关单元的输出端连接，所述第三开关单元的输入端与所述复用功能线连接，所述第一薄膜晶体管的输出端与所述OLED发光二极管的一端连接，所述OLED发光二极管的另一端、所述第一开关单元的输出端以及所述第二开关单元的输入端连接并与所述复用电极连接。
  13. 根据权利要求12所述的OLED显示面板，其中，所述第一薄膜晶体管、第二薄膜晶体管、第三薄膜晶体管均为N型场效应晶体管。
  14. 根据权利要求12所述的OLED显示面板，其中，所述第一开关单元、所述第二开关单元以及所述第三开关单元均为N型场效应晶体管。
  15. 根据权利要求8所述的OLED显示面板，其还包括指纹识别芯片，所述指纹识别芯片与所述复用功能线连接。
  16. 根据权利要求8所述的OLED显示面板，其还包括灰阶电流补偿芯片，所述灰阶电流补偿芯片与所述复用功能线连接。
  17. 一种OLED显示器，其包括OLED显示面板，所述OLED显示面板包括：
    发光层，所述发光层具有第一区域以及第二区域；
    公共电极层，其设置于所述发光层上，所述公共电极层包括相互绝缘的第一电极和多个复用电极，所述第一电极与所述第一区域相对，以作为所述第一区域的公共电极，所述多个复用电极与所述第二区域相对，以作为指纹信号采集电极以及所述第二区域的公共电极；
    复用功能线，其设置于所述发光层上，所述复用功能线与所述复用电极连接以探测所述复用电极与手指构成的电容变化从而生成指纹信号。
  18. 根据权利要求17所述的OLED显示器，其中，所述复用功能线还与所述发光层连接以及外部补偿电路连接，以对所述发光层的灰阶电流进行补偿。
  19. 根据权利要求18所述的OLED显示器，其中，还包括第一开关单元、第二开关单元以及第三开关单元，所述第一开关单元的输入端接入电压信号，所述第一开关单元的输出端、所述发光层以及所述第二开关单元的输入端连接并与所述复用电极连接，所述第二开关单元的输出端与所述复用功能线连接，所述复用功能线通过所述第三开关单元与所述发光层连接。
  20. 根据权利要求19所述的OLED显示器，其中，OLED显示面板包括外部补偿阶段、指纹识别阶段以及发光阶段；
    外部补偿阶段，所述第一开关单元以及所述第二开关单元关闭，所述第三开关单元导通，所述复用功能线输入补偿电流给所述发光层；
    指纹识别阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭；
    发光阶段，所述第一开关单元导通，所述第二开关单元关闭，所述第三开关单元关闭。
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