WO2019062176A1 - 显示装置 - Google Patents

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Publication number
WO2019062176A1
WO2019062176A1 PCT/CN2018/088798 CN2018088798W WO2019062176A1 WO 2019062176 A1 WO2019062176 A1 WO 2019062176A1 CN 2018088798 W CN2018088798 W CN 2018088798W WO 2019062176 A1 WO2019062176 A1 WO 2019062176A1
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WIPO (PCT)
Prior art keywords
electrode
display
layer
unit
electrode layer
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PCT/CN2018/088798
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English (en)
French (fr)
Inventor
陈心全
朱修剑
葛明伟
王峥
Original Assignee
昆山国显光电有限公司
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 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Priority to JP2019563401A priority Critical patent/JP7026139B2/ja
Priority to EP18861187.5A priority patent/EP3611718A4/en
Priority to KR1020197033177A priority patent/KR102226567B1/ko
Publication of WO2019062176A1 publication Critical patent/WO2019062176A1/zh
Priority to US16/596,776 priority patent/US11355562B2/en

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    • 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]
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • 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
    • G09G3/3241—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 the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
    • G09G3/325—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 the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror the data current flowing through the driving transistor during a setting phase, e.g. by using a switch for connecting the driving transistor to the data driver
    • 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
    • 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
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • 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
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2230/00—Details of flat display driving waveforms
    • 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
    • G09G2300/0404—Matrix technologies
    • 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
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a display device.
  • OLED Organic Light Emitting Diode
  • the active matrix OLED (English name is Active Matrix OLED, referred to as AMOLED) uses a thin film transistor with a capacitor to store signals to control the brightness and gray scale performance of the OLED. Each individual OLED is electrically coupled to a corresponding thin film transistor to form a matrix of pixels.
  • the array circuit formed by the thin film transistor determines the light emission of the pixel, and further determines the composition of the image.
  • AMOLED has the advantages of large size, power saving, high resolution and long panel life, and is generally used as a high-definition large-size display device.
  • the high-PPI AMOLED screen of the full HD and above in the prior art has a large pixel density and a small effective area of the transparent aperture of the pixel unit, so that the overall transmittance of the screen body is insufficient, thereby causing low sensitivity of fingerprint recognition under the optical screen. problem.
  • the technical problem to be solved by the present disclosure is to overcome the defect that the transmittance of the fingerprint module of the display device in the prior art is low.
  • the present disclosure provides a display device that is divided into a first display area as a fingerprint recognition area and a second display area as a display area, the display device being included perpendicular to the display device a display layer and a driving layer disposed in a plane direction, the display layer including a first electrode layer and a second electrode layer stacked in the direction, the driving layer including a plurality of driving units
  • a projection of a portion of the first electrode layer corresponding to the first display region in the direction and a first display region of the second electrode layer in the first display region do not completely coincide and/or the drive unit does not all comprise a drive circuit.
  • the drive circuit is omitted, and the effect of increasing the light transmittance of a predetermined region of the display layer can be achieved.
  • At least one of the first electrode layer and the second electrode layer has a plurality of openings.
  • the first electrode layer and the second electrode layer comprise a plurality of electrode units.
  • the openings are arranged in a row, the electrode units are arranged in a row, and the rows in which the openings are arranged alternate with the rows in which the electrode units are arranged.
  • the light transmittance of the fingerprint recognition area is improved. , thereby improving the recognition rate of the fingerprint module.
  • the openings are arranged in a row
  • the electrode units are arranged in a row
  • the number of rows in which the openings are arranged is smaller than the number of rows in which the electrode units are arranged.
  • the openings are alternately arranged with the electrode unit.
  • the first electrode layer and/or the second electrode layer in the first display area of the display device are removed by every other electrode unit, and when the first display area is the fingerprint recognition area, the overall light transmission of the fingerprint recognition area is improved. At the same time, the overall light transmission of the display device is relatively uniform, so that the subsequent fingerprint recognition algorithm is more convenient to process.
  • the electrode units are arranged, at least two of the electrode units are continuously arranged, and the remaining electrode units are alternately arranged with the openings.
  • a projection of at least one of the first electrode layers coincides with a projection of a corresponding number of electrode units in the second electrode layer.
  • the display layer further includes an organic light emitting layer interposed between the first electrode layer and the second electrode layer.
  • an effect of increasing the light transmittance of a predetermined region of the display layer can be achieved.
  • FIG. 1 is a schematic longitudinal cross-sectional structural view of a display device according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural view of a first electrode layer and a second electrode layer in Embodiment 1 of the present disclosure
  • FIG. 3 is a schematic structural view of a first electrode layer and a second electrode layer in Embodiment 2 of the present disclosure
  • FIG. 4 is a schematic structural view of a first electrode layer and a second electrode layer in Embodiment 3 of the present disclosure
  • FIG. 5 is a schematic structural view of a first electrode layer and a second electrode layer in Embodiment 4 of the present disclosure
  • FIG. 6 is a schematic longitudinal sectional structural view of a display device in Embodiment 5 of the present disclosure.
  • I-first display area II-second display area; 10-first electrode layer; 20-organic light-emitting layer; 30-second electrode layer; 40-display unit; 41-first electrode unit; 42-second electrode unit; 43-opening; 50-driving layer; 51-third unit; 52-fourth unit.
  • an embodiment of the present disclosure provides a display device including a display layer and a driving layer 50 stacked in a direction perpendicular to a plane of the display device.
  • the display layer includes a plurality of display units 40 arranged in the same plane array.
  • the driving layer 50 includes a plurality of driving units (for example, TFTs) arranged in the same plane array, and each display unit is disposed in one-to-one correspondence with the driving unit.
  • the display layer includes a first electrode layer 10, an organic light emitting layer 20, and a second electrode layer 30 which are stacked.
  • the first electrode layer 10 includes a plurality of first electrode units 41
  • the second electrode layer 30 includes a plurality of second electrode units 42.
  • the first electrode layer 10 and the second electrode layer 30 are exemplified by an electrode layer composed of electrode units of 4 (row number) ⁇ 4 (column number).
  • first electrode layer 10 and the second electrode layer 30 are both electrode layers made of a conductive material such as a metal or a metal oxide such as ITO, but the scope of protection of the present disclosure is not limited thereto, first The number of electrode units in the electrode layer 10 and the second electrode layer 30 may be specifically set according to actual conditions, that is, the number of rows and the number of columns of the electrode units in the first electrode layer 10 and the second electrode layer 30 may be equal or not And the materials constituting the first electrode layer 10 and the second electrode layer 20 may be the same or different.
  • the organic light emitting layer 20 is divided into a plurality of organic light emitting units by a pixel defining layer disposed on the first electrode layer 10, and the organic light emitting unit and the corresponding one of the first electrode layer 10 and the second electrode layer 30 form an independent light emitting unit.
  • Display unit 40 The organic light emitting layer 20 is divided into a plurality of organic light emitting units by a pixel defining layer disposed on the first electrode layer 10, and the organic light emitting unit and the corresponding one of the first electrode layer 10 and the second electrode layer 30 form an independent light emitting unit. Display unit 40.
  • the display layer is divided into a first display area I and a second display area II.
  • the first display area I is a fingerprint recognition area
  • the second display area II is The display area of the display device.
  • the scope of protection of the present disclosure is not limited thereto, and all means for achieving the object of the present disclosure by using the technical solutions of the present disclosure (including the first display area I and the second display area II) are within the protection scope of the present disclosure.
  • the display unit 40 includes a first unit and a second unit.
  • the first unit is a complete organic light emitting diode unit and includes a first electrode unit 41, an organic light emitting unit, and a second electrode unit 42 which are disposed in a stacked manner
  • the second unit is a non-complete organic light emitting diode unit
  • An organic light emitting unit is included, or one of the first electrode unit 41 and the second electrode unit 42 is further included, that is, the second unit is located in an area corresponding to an opening formed in the first electrode layer 10 and/or the second electrode layer 30.
  • the "display unit” in the present disclosure does not mean that the unit necessarily has a display function, but indicates that the unit is a module or unit in the display layer.
  • the first electrode unit 41 and the second electrode unit 42 are each a quadrilateral having the same shape, and the first electrode layer 10 (the second electrode layer 30) is a continuous film layer having the opening 43 formed therein, and may also be prepared from the same layer.
  • the first electrode unit 41 (second electrode unit 42) having the same shape (ie, non-continuous) is formed.
  • the first unit is a polygon having the same shape
  • the second unit is a polygon having the same shape, which ensures that the light-transmitting area is uniformly distributed regularly, that is, the light emitted from the light-transmitting area is uniformly distributed, which not only simplifies the subsequent fingerprint recognition algorithm processing.
  • the step also enables the display device to have a higher display definition.
  • the first display area I when the first display area I is a fingerprint identification area and the second display area II is a normal display area, the first display area I includes a first unit and a second unit, and the second display area II includes only the first unit.
  • the light transmittance of the fingerprint recognition area can be improved without affecting the light transmittance of the second display area II in the display device.
  • the scope of protection of the present disclosure is not limited thereto, and the second display area II may also include both the first unit and the second unit.
  • the driving unit in the driving layer 50 includes a third unit 51 and a fourth unit 52, wherein the third unit 51 includes a driving circuit, and the fourth unit 52 does not include a driving circuit. Therefore, it should be understood that “the driving unit does not entirely include a driving circuit for driving each display unit” or “the driving unit does not entirely include a driving circuit” in the present disclosure means that the partial driving unit includes a driving circuit, and the partial driving unit does not include the driving circuit. .
  • the "drive unit” in the present disclosure does not mean that the unit necessarily has a drive function, but indicates that the unit is a module or unit in the drive layer.
  • the metal electrode Since the metal electrode has a certain light blocking property, in the display layer of the first display region I, the region located in the display unit 40 corresponding to the first electrode layer 10 and/or the region corresponding to the second electrode layer 30 is removed.
  • the inner electrode unit that is, by forming the second unit, can form a light-transmitting region.
  • the first electrode layer 10 and the second electrode layer 30, which are partially removed by the electrode unit in the display layer, are in a direction perpendicular to the plane in which the display device (display unit) is located (up and down direction in the drawing, hereinafter referred to as "perpendicular to the plane"
  • the direction of the direction " still has a completely coincident portion, that is, the first unit having the complete organic light emitting diode structure is still included in the first display area I.
  • the first display area I is a fingerprint recognition area, the light for identifying the fingerprint can be emitted from the light transmission area, and the recognition sensitivity is high.
  • the first display region I further includes a first unit having a complete organic light emitting diode structure so as not to affect the display function of the first display region 1.
  • the first electrode layer 10 and the second electrode layer 30 respectively include 4 rows and 4 columns of electrode units.
  • 1, 2, 3, and 4 in the drawing denote rows of electrode units arranged in the y direction in the first electrode layer 10 and the second electrode layer 30, respectively, and A, B, C, and D represent the first electrode layer 10 and A column of electrode units arranged in the x direction in the second electrode layer 30.
  • 2(a) and 2(b) are schematic structural views of the first electrode layer 10 and the second electrode layer 30, respectively, and the electrode units of the first electrode layer 10 and the second electrode layer 30 are divided in the same manner. .
  • the electrode unit of the first row and the eighth column in (a) of FIG. 2 is denoted by A1
  • A1 indicates.
  • the second row and the fourth row of the first electrode layer 10 are constituted by the first electrode unit 41, and the second row and the fourth row of the second electrode layer 30 are composed of the second electrode unit. 42 is constituted, and the remaining areas are openings 43.
  • first electrode cells 41 / second electrode cells 42 are used to form a second cell row, and the first cell row and the second cell row are alternated Arranged to form the first electrode layer 10 and the second electrode layer 30 which are composed of 4 ⁇ 4 electrode units. That is, in the fingerprint identification area I, by regularly removing the electrode units at corresponding positions in the first electrode layer 10 and the second electrode layer 30, the transmittance of the first display area I is improved. The purpose is to improve the recognition sensitivity of the fingerprint module.
  • the driving unit corresponding to the first unit is the third unit 51
  • the driving unit corresponding to the second unit is the fourth unit 52.
  • the third unit 51 includes a drive circuit
  • the fourth unit 52 does not include a drive circuit.
  • the number of the first unit row and the second unit row is not limited thereto, that is, the specific number may be set correspondingly according to the actual size of the display device and the display definition.
  • the shapes of the first electrode unit 41 and the second electrode unit 42 are not limited thereto, and may be any polygonal shape.
  • the second electrode layer 30 may also be a continuous film layer formed with openings 43, or may be composed of separate second electrode units 42 of the same shape prepared in the same layer.
  • the driving unit portion corresponding to the first unit 41 is the third unit 51, and the portion is the fourth unit 52, and only needs to ensure that the first display area I has A display unit that can normally emit light can be used.
  • the present embodiment provides a display device as shown in FIG. 3 showing the first display area I, the first electrode unit 41 of the second and fourth rows in (a) of FIG. 3, and the (b) of FIG.
  • the second electrode unit 42 in the second row and the fourth row has a complete organic light emitting diode structure, and only one of the first row and the third row has an electrode unit, which cannot emit light and has a certain light.
  • the transmittance can achieve an effect of improving the overall light transmittance of the first display area I.
  • the driving units corresponding to the respective display units 40 are all the third units 51.
  • the driving unit corresponding to the second unit may be the fourth unit 52, so that the overall transmittance of the first display area I may be further improved.
  • the present embodiment provides a display device. As shown in FIG. 4 showing the first display area I, the first electrode unit 41 and the opening 43 in the first electrode layer 10 are alternately arranged in the x direction and the y direction. The second electrode unit 42 and the opening 43 in the two electrode layer 30 are alternately arranged.
  • the first electrode layer 10 and the second electrode layer 30 composed of 4 ⁇ 4 electrode units are formed by regularly arranging the first electrode unit 41 / the second electrode unit 42 and the opening 43 alternately. That is, in the first display region I, the electrode unit at the corresponding position in the first electrode layer 10 and the second electrode layer 30 is removed by every other electrode unit, that is, the first electrode in which the electrode unit in the display layer is removed.
  • the projections of the layer 10 and the second electrode layer 30 in a direction perpendicular to the plane completely coincide, improving the overall light transmittance of the first display region I.
  • the overall light transmission of the display device is relatively uniform, which not only simplifies the subsequent fingerprint recognition algorithm processing steps, but also enables the independent display unit 40 to be evenly distributed and has high display definition.
  • the driving units corresponding to the respective display units 40 are all the third units 51.
  • the present embodiment provides a display device.
  • the first electrode unit 41 and the opening 43 in the first electrode layer 10 are alternately arranged, that is, by every other electrode unit.
  • the first electrode layer 10 is formed in such a manner that the electrode unit is removed, and a part of the second electrode unit 42 and the opening 43 in the second electrode layer 30 are spaced apart, and a part of the second electrode unit 42 or the opening 43 is continuously arranged.
  • the second electrode units C4 and D4 in the second electrode layer 30 are continuously arranged, and the remaining second electrode units 42 and the openings 43 are spaced apart.
  • the driving units corresponding to the respective display units 40 are all the third units 51.
  • the present embodiment provides a display device. As shown in FIG. 6, in the first display area I and the second display area II, the first electrode layer 10 and the second electrode layer 30 are overlapped, and each display unit 40 has a complete display. Organic light emitting diode structure.
  • the driving units corresponding to the first display area I in the driving layer 50 are the third unit 51 and the fourth unit 52 which are alternately disposed. Since the metal elements (wires, source and drain electrodes, gates, capacitor plates, etc.) in the driving unit have a certain light blocking property, a part of the driving units in the driving layer 50 are set as the fourth unit 52 not including the driving circuit, A light transmissive area can be formed in the display device.
  • the first display area I is a fingerprint recognition area, the light for reading the fingerprint is easily emitted from the light transmission area, and the fingerprint recognition sensitivity is high.
  • the type of the driving unit in the driving layer 50 is not limited, and it is only necessary to ensure that at least one driving unit in the driving layer 50 is the fourth unit 52 to form a light transmitting region.

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Abstract

本公开涉及显示技术领域，提供一种显示装置，显示装置被划分成作为指纹识别区域的第一显示区域和作为显示区域的第二显示区域，显示装置包括在垂直于显示装置所在平面的方向上层叠设置的显示层和驱动层，显示层包括在该方向上层叠设置的第一电极层和第二电极层，驱动层包括多个驱动单元。在第一显示区域中，第一电极层中的与第一显示区域对应的部分在该方向上的投影和第二电极层中的与第一显示区域对应的部分在该方向上的投影不完全重合和/或驱动单元不全包括驱动电路。利用本公开，能够实现提升显示层中的预定区域的透光率的效果。

Description

显示装置 技术领域
本公开涉及显示技术领域，具体涉及一种显示装置。
背景技术
有机发光二极管(Organic Light Emitting Diode，简称OLED)装置具有自发光、驱动电压低、发光效率高、响应时间短、清晰度和对比度高、视角宽以及可实现柔性显示和大面积全色显示等诸多优点，被业界公认为是最有发展潜力的显示技术。
有源矩阵型OLED(英文名称为Active Matrix OLED，简称AMOLED)，利用薄膜晶体管搭配电容来存储信号，以控制OLED的亮度和灰阶表现。每个单独的OLED与对应的薄膜晶体管电连接，形成像素矩阵。薄膜晶体管形成的阵列电路决定像素的发光情况，进而决定图像的构成。AMOLED具有可大尺寸化、较省电、解析度高和面板寿命较长等优点，通常用作高清晰度的大尺寸显示装置。
目前，随着信息产业的发展，电子产品已经进入智能时代。由于指纹图案具有唯一性，为了提高使用电子产品的安全性和便捷性，很多电子产品都配备有指纹模识别组，以加强设备的安全性。
然而，现有技术中的全高清及以上的高PPI AMOLED屏体因像素密度大且像素单元透光孔有效面积小而造成屏体整体透光率不足，进而造成光学屏下指纹识别灵敏度低的问题。
发明内容
本公开要解决的技术问题在于克服现有技术中显示装置的指纹模组透光率低的缺陷。
鉴于此，本公开提供一种显示装置，所述显示装置被划分成作为指纹识别区域的第一显示区域和作为显示区域的第二显示区域，所述显示装置包括在垂直于所述显示装置所在平面的方向上层叠设置的显示层和驱动层，所述显示层包括在所述方向上层叠设置的第一电极层和第二电极层，所述驱动层包括多个驱动单元，
在所述第一显示区域中，所述第一电极层中的与所述第一显示区域对应的部分在所述方向上的投影和所述第二电极层中的与所述第一显示区域对应的部分在所述方向上的投影不完全重合和/或所述驱动单元不全包括驱动电路。
通过将显示层的预定区域内的显示单元中的与第一电极层对应的部分和/或与第二电极层对应的部分的电极部分地去除和/或将预定区域内的部分驱动单元中的驱动电路省略，能够实现提升显示层的预定区域的透光率的效果。
可选地，在所述第一显示区域中，所述第一电极层和所述第二电极层中的至少一者具有多个开口。
可选地，在所述第一显示区域中，所述第一电极层和所述第二电极层包括多个电极单元。
可选地，所述开口排列成行，所述电极单元排列成行，所述开口排列所成的行与所述电极单元排列所成的行交替。
通过每隔一行地去除显示装置中的第一显示区域内的第一电极层和/或第二电极层，当第一显示区域为指纹识别区时，实现了指纹识别区域透光率提高的目的，从而提升了指纹模组的识别率。
可选地，所述开口排列成行，所述电极单元排列成行，所述开口排列所成的行的数量少于所述电极单元排列所成的行的数量。
可选地，所述开口与所述电极单元交替排列。
通过每隔一个电极单元地去除显示装置中的第一显示区域内的第一电极层和/或第二电极层，当第一显示区域为指纹识别区时，提高了指纹识别区域的整体透光率；同时，该显示装置整体光线透过比较均匀，从而使得后续的指纹识别算法处理比较方便。
可选地，在所述电极单元排列所成的行中，至少两个所述电极单元连续排列，其余所述电极单元与所述开***替排列。
可选地，在所述方向上，所述第一电极层中的至少一个电极单元的投影与所述第二电极层中的相应数量的电极单元的投影重合。
可选地，所述显示层还包括夹设在所述第一电极层和所述第二电极层之间的有机发光层。
根据本公开实施例提供的显示装置，能够实现提升显示层的预定区域的透光率的效果。
附图说明
图1为本公开实施例中显示装置的纵向截面结构示意图；
图2为本公开实施例1中第一电极层和第二电极层的结构示意图；
图3为本公开实施例2中第一电极层和第二电极层的结构示意图；
图4为本公开实施例3中第一电极层和第二电极层的结构示意图；
图5为本公开实施例4中第一电极层和第二电极层的结构示意图；
图6为本公开实施例5中显示装置的纵向截面结构示意图；
附图标记：Ⅰ-第一显示区域；Ⅱ-第二显示区域；10-第一电极层；20-有机发光层；30-第二电极层；40-显示单元；41-第一电极单元；42-第二电极单元；43-开口；50-驱动层；51-第三单元；52-第四单元。
具体实施方式
如图1所示，本公开实施例提供一种显示装置，包括在垂直于显示装置所在平面的方向上层叠设置的显示层和驱动层50。其中，显示层包括在同一平面阵列排布的多个显示单元40，驱动层50包括在同一平面阵列排布的多个驱动单元(例如，TFT)，各显示单元与驱动单元一一对应设置。
其中，该显示层包括层叠设置的第一电极层10、有机发光层20和第二电极层30。其中，第一电极层10包括多个第一电极单元41,第二电极层30包括多个第二电极单元42。为了清楚地说明本公开的目的，在下文的描述中，第一电极层10和第二电极层30以由4(行数)×4(列数)的电极单元构成的电极层为例进行详细描述，并且第一电极层10和第二电极层30均为由诸如金属或金属氧化物(如ITO)等的导电材料制成的电极层，但是本公开的保护范围并不限于此，第一电极层10和第二电极层30中的电极单元的个数可以根据实际情况进行具体设置，即第一电极层10和第二电极层30中的电极单元的行数和列数可以相等或不等，并且构成第一电极层10 和第二电极层20的材料可以相同或不同可以。有机发光层20被设置在第一电极层10上的像素限定层划分成多个有机发光单元，有机发光单元与第一电极层10和第二电极层30中的对应的电极单元形成独立发光的显示单元40。
此外，如图1所示，显示层被划分成第一显示区域Ⅰ和第二显示区域Ⅱ，在本公开下文的描述中，第一显示区域Ⅰ为指纹识别区域，第二显示区域Ⅱ为该显示装置的显示区域。但是，本公开的保护范围并不限于此，所有利用本公开的技术方案(包括第一显示区域Ⅰ和第二显示区域Ⅱ)实现本公开目的的手段，均属于本公开的保护范围。
在本公开实施例中，如图1所示，显示单元40包括第一单元和第二单元。在下文的描述中，第一单元为完整的有机发光二极管单元并包括层叠设置的第一电极单元41、有机发光单元和第二电极单元42，第二单元为非完整的有机发光二极管单元，并且包括有机发光单元，或者还包括第一电极单元41和第二电极单元42中的一者,即第二单元位于与形成于第一电极层10和/或第二电极层30的开口对应的区域。因此，应当理解的，本公开中的“显示单元”并不表示该单元必然具有显示功能，而表示该单元为显示层中的一个模块或单元。第一电极单元41和第二电极单元42均为独立的形状相同的四边形，第一电极层10(第二电极层30)为形成有开口43的连续膜层，也可以由同层制备的分隔开(即非连续)的形状相同的第一电极单元41(第二电极单元42)构成。其中，第一单元为形状相同的多边形，第二单元为形状相同的多边形，保证了透光区域规律地均匀分布，即从透光区域射出的光线均匀分布，不但能够简化后续的指纹识别算法处理 步骤，还能使显示装置具有较高的显示清晰度。
其中，当第一显示区域Ⅰ为指纹识别区域，第二显示区域Ⅱ为正常显示区域时，第一显示区域Ⅰ包括第一单元和第二单元，第二显示区域Ⅱ仅包括第一单元。从而能够在提高指纹识别区域透光率的同时，不影响显示装置中的第二显示区域Ⅱ的透光率。但是，本公开的保护范围并不限于此，第二显示区域Ⅱ也可以既包括第一单元，又包括第二单元。
如图1所示，驱动层50中的驱动单元包括第三单元51和第四单元52，其中第三单元51包括有驱动电路，第四单元52不包括驱动电路。因此，应当理解的，本公开中的“驱动单元不全包括用于驱动各显示单元的驱动电路”或“驱动单元不全包括驱动电路”是指部分驱动单元包括驱动电路，部分驱动单元不包括驱动电路。本公开中的“驱动单元”并不表示该单元必然具有驱动功能，而表示该单元为驱动层中的一个模块或单元。
此外，下面所描述的本公开不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
实施例1
由于金属电极具有一定阻光性，所以在第一显示区域Ⅰ的显示层中，通过去除显示单元40中的位于与第一电极层10对应的区域和/或与第二电极层30对应的区域内的电极单元，即通过形成第二单元，能够形成透光区域。同时，显示层中的电极单元被部分去除的第一电极层10和第二电极层30在垂直于显示装置(显示单元)所在平面的方向(图中的上下方向，以下简称为“垂直于平面的方向”)上仍具有完全重合的部分，即在第一显示区域Ⅰ内仍包括具有完整有机发光二极管结构的第一单元。当第一显示区 域Ⅰ为指纹识别区时，用于识别指纹的光线能够从透光区域射出，识别灵敏度高。而且，第一显示区域Ⅰ中还包括具有完整有机发光二极管结构的第一单元，从而不会影响第一显示区域Ⅰ的显示功能。
作为本公开的一个实施例，如示出第一显示区域I的图2所示，第一电极层10和第二电极层30分别包括4行4列的电极单元。图中的1、2、3、4分别表示第一电极层10和第二电极层30中的沿y方向排列的电极单元的行，A、B、C、D分别表示第一电极层10和第二电极层30中的沿x方向排列的电极单元的列。其中，图2的(a)和图2的(b)分别为第一电极层10和第二电极层30的结构示意图，第一电极层10和第二电极层30的电极单元的划分方式相同。例如，假如图2的(a)中的第1行第A列的电极单元用A1表示，那么与图2的(a)中的A1区域相对应地，在图2的(b)中同样用A1表示。
如图2所示，在x方向上，第一电极层10的第二行和第四行由第一电极单元41构成，第二电极层30的第二行和第四行由第二电极单元42构成，其余区域均为开口43。
通过使用4个连续排列的开口43构成第一单元行，使用4个连续排列的第一电极单元41/第二电极单元42构成第二单元行，并且使第一单元行和第二单元行交替排布，形成以4×4的电极单元构成的第一电极层10和第二电极层30。即在指纹识别区域Ⅰ中，通过规律性地、每隔一行地去除第一电极层10和第二电极层30中的对应位置处的电极单元，实现了提高第一显示区域Ⅰ透光率的目的，从而提升了指纹模组的识别灵敏度。
在第一显示区域Ⅰ中，如图1所示，与第一单元对应的驱动单元为第 三单元51，与第二单元对应的驱动单元为第四单元52。第三单元51包括驱动电路，第四单元52不包括驱动电路。通过将驱动层50中的与第二单元(不具有完整的有机发光二极管结构)对应的驱动电路去除，从而可以保证光线能够无阻碍地从透光区域射出，识别灵敏度高。
作为本实施例的第一种可替换实施方式，第一单元行和第二单元行的数量不限于此，即具体的数量可以根据显示装置的实际尺寸以及显示清晰度的要求而相应设置。
作为本实施例的替换实施方式，第一电极单元41、第二电极单元42的形状不限于此，可以为任意多边形。为了简化工艺，第二电极层30还可以为形成有开口43的连续膜层，也可以由同层制备的独立的形状相同的第二电极单元42构成。
作为本公开的可替换实施方式，在第一显示区域Ⅰ中，与第一单元41对应的驱动单元部分为第三单元51，部分为第四单元52，只需保证第一显示区域Ⅰ中具有能够正常发光的显示单元即可。
实施例2
本实施例提供一种显示装置，如示出第一显示区域I的图3所示，图3的(a)中的第2行和第4行的第一电极单元41与图3的(b)中的第2行和第4行中的第二电极单元42均具有完整的有机发光二极管结构，而第1行和第3行中的仅一者具有电极单元，无法发光并具有一定的光线透过率，可达到提升第一显示区域Ⅰ整体透光率的效果。
作为本公开的一个实施例，在本实施例中，与各显示单元40对应的 驱动单元均为第三单元51。作为本公开的可替换实施方式，亦可以是与第二单元对应的驱动单元均为第四单元52，从而可以进一步提升第一显示区域Ⅰ的整体透光率。
实施例3
本实施例提供一种显示装置，如示出第一显示区域I的图4所示，在x方向和y方向上，第一电极层10中的第一电极单元41和开口43交替排列，第二电极层30中的第二电极单元42和开口43交替排列。
通过使第一电极单元41/第二电极单元42和开口43规律性地交替排列，形成以4×4的电极单元构成的第一电极层10和第二电极层30。即在第一显示区域Ⅰ中，通过每隔一个电极单元地去除第一电极层10和第二电极层30中的对应位置处的电极单元，即显示层中的电极单元被去除的第一电极层10和第二电极层30在垂直于平面的方向上的投影完全重合，提高了第一显示区域Ⅰ的整体透光率。同时，该显示装置整体光线透过比较均匀，不但能够简化后续的指纹识别算法处理步骤，而且能够使独立发光的显示单元40分布均匀，具有较高的显示清晰度。
作为本公开的一个实施例，在本实施例中，与各显示单元40对应的驱动单元均为第三单元51。
实施例4
本实施例提供一种显示装置，如示出第一显示区域I的图5所示，第一电极层10中的第一电极单元41和开口43交替排列，即通过以每隔一个电极单元地去除电极单元的方式形成第一电极层10，第二电极层30中的部分第二电极单元42和开口43间隔排列，部分第二电极单元42或开口43 连续排列。例如，如图5的(b)所示，第二电极层30中的第二电极单元C4和D4连续排列，其余第二电极单元42和开口43间隔排列。只需保证电极单元被去除的显示层的第一电极层10和第二电极层30在垂直于平面的方向上的投影具有重合的部分，即可达到提升第一显示区域Ⅰ整体透光率的效果。
作为本公开的一个实施例，本实施例中，与各显示单元40对应的驱动单元均为第三单元51。
实施例5
本实施例提供一种显示装置，如图6所示，在第一显示区域Ⅰ和第二显示区域Ⅱ中，第一电极层10和第二电极层30重合，各显示单元40均具有完整的有机发光二极管结构。
驱动层50中的与第一显示区域Ⅰ对应的驱动单元为交替设置的第三单元51和第四单元52。由于驱动单元中的金属元件(导线、源漏电极、栅极、电容极板等)具有一定的阻光性，将驱动层50中的部分驱动单元设置为不包括驱动电路的第四单元52，能够在显示装置中形成透光区域。当第一显示区域Ⅰ为指纹识别区时，用于读取指纹的光线容易从该透光区域射出，指纹识别灵敏度高。
作为本实施例的一种可替换实施方式，不限制驱动层50中的驱动单元的类型，只需保证驱动层50中的至少一个驱动单元为第四单元52,以形成透光区域即可。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方 式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本公开创造的保护范围之中。

Claims (9)

  1. 一种显示装置，其特征在于，所述显示装置被划分成作为指纹识别区域的第一显示区域和作为显示区域的第二显示区域，所述显示装置包括在垂直于所述显示装置所在平面的方向上层叠设置的显示层和驱动层，所述显示层包括在所述方向上层叠设置的第一电极层和第二电极层，所述驱动层包括多个驱动单元，
    在所述第一显示区域中，所述第一电极层中的与所述第一显示区域对应的部分在所述方向上的投影和所述第二电极层中的与所述第一显示区域对应的部分在所述方向上的投影不完全重合和/或所述驱动单元不全包括驱动电路。
  2. 根据权利要求1所述的显示装置，其中，在所述第一显示区域中，所述第一电极层和所述第二电极层中的至少一者具有多个开口。
  3. 根据权利要求2所述的显示装置，其中，在所述第一显示区域中，所述第一电极层和所述第二电极层包括多个电极单元。
  4. 根据权利要求3所述的显示装置，其中，所述开口排列成行，所述电极单元排列成行，所述开口排列所成的行与所述电极单元排列所成的行交替。
  5. 根据权利要求3所述的显示装置，其中，所述开口排列成行，所述电极单元排列成行，所述开口排列所成的行的数量少于所述电极单元排列所成的行的数量。
  6. 根据权利要求3所述的显示装置，其中，所述开口与所述电极单元交替排列。
  7. 根据权利要求3所述的显示装置，其中，在所述电极单元排列所成的行中，至少两个所述电极单元连续排列，其余所述电极单元与所述开***替排列。
  8. 根据权利要求3至7中任一项所述的显示装置，其中，在所述方向上，所述第一电极层中的至少一个电极单元的投影与所述第二电极层中的相应数量的电极单元的投影重合。
  9. 根据权利要求1所述的显示装置，其中，所述显示层还包括夹设在所述第一电极层和所述第二电极层之间的有机发光层。
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