WO2020199535A1 - 显示装置及其oled显示面板 - Google Patents

显示装置及其oled显示面板 Download PDF

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Publication number
WO2020199535A1
WO2020199535A1 PCT/CN2019/107916 CN2019107916W WO2020199535A1 WO 2020199535 A1 WO2020199535 A1 WO 2020199535A1 CN 2019107916 W CN2019107916 W CN 2019107916W WO 2020199535 A1 WO2020199535 A1 WO 2020199535A1
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WIPO (PCT)
Prior art keywords
oled
light
transparent
display panel
polarizer
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/107916
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English (en)
French (fr)
Inventor
楼均辉
陈龙
何卫东
邓达希
王向前
陈帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Govisionox Optoelectronics Co Ltd
Original Assignee
Kunshan Govisionox Optoelectronics Co Ltd
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Publication date
Application filed by Kunshan Govisionox Optoelectronics Co Ltd filed Critical Kunshan Govisionox Optoelectronics Co Ltd
Publication of WO2020199535A1 publication Critical patent/WO2020199535A1/zh
Priority to US17/318,546 priority Critical patent/US12402503B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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]
    • G09G3/3216—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 a passive 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
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • H10K59/179—Interconnections, e.g. wiring lines or terminals
    • 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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/81—Anodes
    • H10K50/813—Anodes characterised by their shape
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    • 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
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    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • H10K50/828—Transparent cathodes, e.g. comprising thin metal layers
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    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • 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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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    • 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
    • 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
    • H10K59/126—Shielding, e.g. light-blocking means over the 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
    • H10K59/10—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
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays
    • 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
    • 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
    • H10K59/8051—Anodes
    • H10K59/80515—Anodes 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
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80521—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
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80524—Transparent cathodes, e.g. comprising thin metal layers
    • 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
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels

Definitions

  • This application relates to the field of OLED display technology, and in particular to a display device and an OLED display panel thereof.
  • the purpose of this application is to provide a full-screen display device and its OLED display panel.
  • the first OLED pixel unit and the second OLED pixel unit are respectively arranged in the transparent display area and the non-transparent display area, so that when the first OLED pixel unit and the second OLED pixel unit are driven, the transparent display area and the non-transparent display area
  • the display area forms a full screen; when the first OLED pixel unit is not driven, the transparent display area performs a light transmission function, which can collect light signals under the display;
  • the polarizer has an opening in the area corresponding to the transparent display area
  • the first OLED pixel unit includes a plurality of first OLED sub-pixels, and each first OLED sub-pixel includes at least: a light-transmitting anode, an OLED light-emitting material layer on the light-transmitting anode, and The transparent cathode on the OLED light-emitting material layer.
  • the plurality of first OLED sub-pixels may be sub-pixels of three primary colors of red, green, and blue, or may be other existing sub-pixels of three primary colors and four primary colors.
  • the light-transmitting anodes of different first OLED sub-pixels are independent block anodes, and each block anode is round, oval, dumbbell, or gourd-shaped.
  • the above pattern can change the periodic structure produced by diffraction, that is, change the distribution of the diffraction field, thereby reducing the diffraction phenomenon.
  • the first OLED pixel units arranged in an array are driven by AM; the OLED display panel includes one row and several columns of light-transmitting anodes, or one column of several rows of light-transmitting anodes, and the light-transmitting cathodes are planes. electrode.
  • the column-distributed transparent anode can omit the pattern between rows and the row-distributed transparent anode can omit the column and column compared with the array-type block-shaped transparent anode.
  • the above two structures both simplify the pattern in the plane direction, and can alleviate the problem of light diffraction in the up and down direction, so the light sensor under the transparent display area has a good imaging effect.
  • each column of light-transmitting anodes or each row of light-transmitting anodes in the optional scheme includes a plurality of mutually electrically connected anode blocks, and each anode block is circular, oval, or dumbbell-shaped. , Or gourd-shaped. The aforementioned shape can further reduce diffraction problems.
  • the pixel driving circuit includes 1T, 2T1C, 3T1C, or 7T1C.
  • the first OLED pixel units arranged in an array are driven by PM; the OLED display panel includes multiple rows of light-transmitting anodes and multiple columns of light-transmitting cathodes, or multiple columns of light-transmitting anodes and Multiple rows of light-transmitting cathodes to select the first OLED sub-pixel at the intersection.
  • the light-transmitting anode may be a wave-shaped strip anode
  • the light-transmitting cathode may be a wave-shaped strip cathode.
  • the OLED display panel may also include one row of several rows of light-transmitting anodes, or one column of several rows of light-transmitting anodes, and the light-transmitting cathodes are surface electrodes.
  • each row of light-transmitting anodes or each row of light-transmitting anodes includes a plurality of mutually electrically connected anode blocks, and each anode block is circular, oval, dumbbell, or gourd-shaped.
  • the transparent filler is cured OCR or LOCA.
  • OCR Optically Clear Resin, UV-cured or heat-cured transparent resin
  • LOCA Liquid Optically Clear Adhesive, Liquid Transparent Optical Adhesive
  • first transparent adhesive glue between the polarizer, the transparent filler layer and the cover plate; and/or between the polarizer, the transparent filler layer and the encapsulation layer With a second transparent adhesive glue.
  • the first transparent adhesive glue can improve the adhesion performance between the polarizer and the cover plate.
  • the second transparent adhesive glue can improve the adhesion performance between the polarizer and the packaging layer.
  • the transparent filler layer is formed in the opening of the polarizer first, and then the first transparent adhesive glue and the cover plate are sequentially arranged on the polarizer and the transparent filler layer. This plan is omitted
  • the thickness of the first transparent adhesive glue is more than twice the thickness of the polarizer.
  • the thickness of the first transparent adhesive glue is more than three times the thickness of the polarizer.
  • the entire surface of the second transparent adhesive glue is provided on the packaging layer. This is because: the entire surface of the second transparent adhesive glue can reduce the step height difference when the first transparent adhesive glue fills the opening compared with the second transparent adhesive glue under only the polarizer. The smaller the step height difference, the filling The better the effect.
  • a touch layer is provided between the encapsulation layer and the polarizer to realize the touch function.
  • the touch control layer has no opening in the area corresponding to the transparent display area, so as to reduce the height difference of filling steps.
  • the area corresponding to the transparent display area in the touch layer has no touch structure, so as to increase the light transmittance of the transparent display area.
  • the opening is enclosed by the sidewall of the polarizer, and the sidewall of the polarizer has a light-shielding layer; or the opening is enclosed by the sidewall of the polarizer and a barrier wall, the The side wall of the polarizer and/or the side wall of the retaining wall has a light shielding layer.
  • the light shielding layer is made of black matrix material or black support column material. The light shielding layer can prevent light leakage at the edge of the polarizer opening when the first OLED sub-pixel and the second OLED sub-pixel emit light, which affects the display effect; or prevent light leakage at the polarizer opening when only the second OLED sub-pixel emits light.
  • FIG. 1 is a top view of an OLED display panel in an embodiment of the present application
  • Figure 2 is a cross-sectional view along the line AA in Figure 1;
  • FIG. 3 is a cross-sectional view taken along the line BB in FIG. 1, in which the encapsulation layer, the transparent filling layer, and the cover plate are omitted;
  • FIGS 4 and 5 are respectively top views of the light-transmitting anodes in two other OLED light-transmitting display panels
  • FIG. 6 is a top view of another light-transmitting anode in an OLED display panel
  • FIG. 7 is a top view of a light-transmitting anode in another OLED display panel
  • FIG. 8 is a cross-sectional view along the CC line in FIG. 1, in which the encapsulation layer, the transparent filling layer, and the cover plate are omitted;
  • FIG. 9 is a schematic diagram of a cross-sectional structure of an OLED display panel in a second embodiment of the present application.
  • Figure 10 is a comparative example of Figure 9;
  • FIG. 11 is a schematic diagram of a cross-sectional structure of an OLED display panel in a third embodiment of the present application.
  • Figure 12 is a comparative example of Figure 11;
  • FIG. 13 is a schematic diagram of a cross-sectional structure of an OLED display panel in a fourth embodiment of the present application.
  • FIG. 14 is a schematic diagram of a cross-sectional structure of an OLED display panel in a fifth embodiment of the present application.
  • FIG. 1 is a top view of the OLED display panel in the first embodiment of the present application
  • FIG. 2 is a cross-sectional view along the line AA in FIG. 1.
  • the OLED display panel 1 includes:
  • the substrate 10 includes a transparent display area 10a and a non-transparent display area 10b;
  • the encapsulation layer 13 covers the first OLED pixel unit 11 and the second OLED pixel unit 12;
  • the polarizer 14 is located on the encapsulation layer 13.
  • the polarizer 14 has an opening 14a, and the opening 14a corresponds to the transparent display area 10a;
  • the cover plate 15 is located on the polarizer 14, and the polarizer opening 14 a between the cover plate 15 and the encapsulation layer 13 is filled with a transparent filler to form a transparent filler layer 16.
  • the substrate 10 may be a hard substrate, such as glass, or a soft substrate, such as polyimide (PI).
  • the plurality of first OLED pixel units 11 may be arranged in an array. All the first OLED pixel units 11 can be located in the transparent display area 10a. All the second OLED pixel units 12 can be located in the non-transparent display area 10b.
  • the first OLED pixel unit 11 and the second OLED pixel unit 12 may be arranged on the same layer covered by the encapsulation layer 13.
  • the polarizer 14 and the opening 14a are both located between the cover plate 15 and the packaging layer 13.
  • Fig. 3 is a cross-sectional view taken along line BB in Fig. 1, in which the encapsulation layer, the transparent filler layer, and the cover plate are omitted.
  • the first OLED pixel unit 11 includes a plurality of first OLED sub-pixels 111, and each first OLED sub-pixel 111 includes at least: a light-transmitting anode 111a, an OLED light-emitting material layer 111b on the light-transmitting anode 111a, And a light-transmitting cathode 111c on the OLED light-emitting material layer 111b.
  • the first OLED pixel units 11 arranged in an array perform a display function.
  • the first OLED pixel units 11 arranged in an array perform a light-transmitting function.
  • each light-transmitting anode 111a may be provided with a pixel defining layer 111d, the pixel defining layer 111d has an opening, and the OLED light-emitting material layer 111b is located in the opening.
  • the transparent anodes 111a in the first OLED pixel units 11 arranged in an array are arranged in one row and several columns.
  • the light-transmitting anodes 111a may also be distributed in one column, several rows, or distributed in rows or columns.
  • the column-distributed light-transmitting anode 111a is relatively transparent to the determinant block-shaped light-transmitting anode. Because the pattern between rows is omitted, the pattern in the plane direction is simplified, and the problem of light diffraction in the vertical direction can be alleviated.
  • the light sensor under the display area 10a has a good imaging effect.
  • the row-distributed light-transmitting anode 111a is opposite to the determinant-distributed block light-transmitting anode, and the pattern between the columns is omitted.
  • each row of light-transmitting anodes 111a may be dumbbell-shaped; or in the OLED display panel 1 shown in FIG. 5, each row of light-transmitting anodes 111a may be gourd-shaped.
  • each row of light-transmitting anodes 111a may also be circular or elliptical. The above shapes can further reduce diffraction problems.
  • the OLED light-emitting material layer 111b may conform to the shape of the light-transmitting anode 111a.
  • the light-transmitting cathode 111c of the first OLED sub-pixel 111 in each column or row may be a whole surface electrode.
  • the driving mode can be a) passive, b) active, or c) semi-active.
  • Passive-driven OLED Passive Matrix OLED, PMOLED
  • Passive Matrix OLED PMOLED
  • PMOLED Passive Matrix OLED
  • passive-driven simply forms a matrix with cathodes and anodes, and illuminates the pixels at the intersection of rows and columns in the array by scanning, and each pixel is operated at In short pulse mode, it emits high brightness instantaneously.
  • the addressing of each OLED sub-pixel is directly controlled by an external circuit.
  • the first OLED pixel units 11 arranged in an array have no pixel driving circuit, the light-transmitting anode 111a of each first OLED sub-pixel 111 is connected to an external circuit, and the light-transmitting cathode 111c is grounded.
  • the external circuit can be a data signal channel for driving the display chip (DDIC).
  • Active matrix OLED Active Matrix OLED
  • AMOLED also known as active drive
  • TFT thin film transistor
  • each thin film transistor unit includes a storage capacitor.
  • AMOLED uses independent thin film electrical transistors to control the light emission of each pixel, and each pixel can emit light continuously. In other words, the addressing of each OLED sub-pixel is directly controlled by the thin film transistor array.
  • the row selection signal of the thin film transistor array can be derived from the GIP circuit, and the column selection signal can be derived from the display driver integrated chip (DDIC).
  • DDIC display driver integrated chip
  • the OLED display panel 1 may include multiple rows of light-transmitting anodes 111a and multiple columns of light-transmitting cathodes 111c, or multiple columns of light-transmitting anodes 111a and multiple rows of light-transmitting cathodes 111c, to select The first OLED sub-pixel 111 at the intersection.
  • FIG. 6 is a top view of a light-transmitting anode in still another OLED display panel.
  • the light-transmitting anode 111a is a multi-row wave-shaped strip anode; correspondingly, the light-transmitting cathode 111c (not shown) is a multi-row wave-shaped strip cathode.
  • the shape of the OLED light-emitting material layer 111b and the anode 111a are consistent.
  • the OLED display panel 1 may also include one row and several columns of light-transmitting anodes 111a, or one column and several rows of light-transmitting anodes 111a, and the light-transmitting cathodes 111c are surface electrodes.
  • the light-transmitting anodes 111a are in one row and several columns, a certain column of the light-transmitting anodes 111a can select the first OLED sub-pixel 111 of the column by applying voltage.
  • a certain row of the light-transmitting anodes 111a can select the first OLED sub-pixel 111 of the row by applying a voltage.
  • the first OLED pixel unit 11 arranged in an array has a pixel drive circuit, which can be a conventional drive circuit such as 2T1C, 3T1C, 7T1C, or only includes a 1T drive circuit that implements a switching function.
  • a pixel drive circuit which can be a conventional drive circuit such as 2T1C, 3T1C, 7T1C, or only includes a 1T drive circuit that implements a switching function.
  • the pixel driving circuit only includes a switching transistor (1T).
  • the gate of the switching transistor is connected to the scan signal, the source is connected to the data line, and the drain is connected to the transparent anode 111a of the first OLED sub-pixel 111.
  • the scan signal may be derived from the scan signal of the GIP circuit, for example, and the data line is connected to the data signal channel of the display driver integrated chip (DDIC).
  • DDIC display driver integrated chip
  • FIG. 7 is a top view of a light-transmitting anode in another OLED display panel.
  • the transparent anodes 111 a of the first OLED sub-pixels 111 in different columns are independent block anodes, and the block anodes are connected together by connecting parts.
  • each block anode can be round, oval, dumbbell-shaped, or gourd-shaped.
  • the driving mode of the first OLED sub-pixel 111 in each column in FIG. 7 may be a PM driving mode or an AM driving mode.
  • the light-transmitting anodes 111a of the first OLED sub-pixels 111 in different rows are independent block anodes, and the block anodes are connected together by a connecting portion.
  • Each block anode can be as shown in Figures 4 and 5, and can be round, oval, dumbbell-shaped, or gourd-shaped.
  • Fig. 8 is a cross-sectional view taken along line CC in Fig. 1, in which the encapsulation layer, the transparent filling layer, and the cover plate are omitted.
  • the second OLED pixel unit 12 includes a plurality of second OLED sub-pixels 121, and each second OLED sub-pixel 121 includes at least sequentially from bottom to top: a reflective anode 121a formed on a substrate 10, A pixel defining layer 121d having an opening, an OLED light-emitting material layer 121b located in the opening, and a transparent cathode 121c located on the OLED light-emitting material layer 121b.
  • the encapsulation layer 13 may adopt a traditional thin film encapsulation (TFE) technology, including a multilayer organic and inorganic overlapping structure.
  • TFE thin film encapsulation
  • the encapsulation layer 13 can prevent external water vapor and oxygen from entering the first OLED pixel unit 11 and the second OLED pixel unit 12, and affect the luminous efficiency of the OLED light-emitting material layers 111b and 121b.
  • the polarizer 14 can eliminate the light that enters the environment from the OLED display panel 1 and then is reflected into the OLED display panel 1. Therefore, it can eliminate the interference of ambient light with the normal display of the OLED display panel 1. Removing the polarizer 14 in the transparent display area 10a can increase the light transmittance of this area.
  • the cover 15 is used to resist scratches and protect the underlying structure.
  • the transparent filler layer 16 is cured OCR or LOCA.
  • OCR Optically Clear Resin, UV-curing or heat-curing transparent resin
  • LOCA Liquid Optically Clear Adhesive, Liquid Transparent Optical Adhesive
  • the OLED display panel 1 in order to restrict the flow of the liquid transparent filler that forms the transparent filler layer 16, in the embodiment where the opening 14a is not only enclosed by the sidewall of the polarizer, the OLED display panel 1 also includes a barrier Wall 17.
  • the retaining wall 17 may be located in the frame area 10c.
  • the OLED display panel 1 further includes a first transparent layer disposed between the polarizer 13, the transparent filler layer 16 and the cover plate 15.
  • Adhesive glue 18 The material of the first transparent adhesive 18 may be OCA.
  • FIG. 9 is a schematic diagram of a cross-sectional structure of an OLED display panel in a second embodiment of the present application. 9 and 2, it can be seen that the structure of the OLED display panel 2 in this embodiment is roughly the same as that of the OLED display panel 1 in the embodiment in FIG. 2, except that the first transparent adhesive 18 is filled with polarized light.
  • the opening 14a of the sheet forms a transparent filling layer 16.
  • a transparent filler layer 16 is formed in the opening 14a of the polarizer first, and then the first transparent adhesive glue 18 is sequentially arranged on the polarizer 14 and the transparent filler layer 16 ,
  • the solution of the cover plate 15, this solution omits the step of first forming the transparent filling layer 16 in the opening 14a of the polarizer.
  • the opening 14a of the polarizer is used The first transparent adhesive glue 18 forms the transparent filling glue layer 16, with fewer steps and simple processes.
  • the thickness of the first transparent adhesive glue 18 is more than twice the thickness of the polarizer 14.
  • the thickness of the first transparent adhesive glue 18 is more than three times the thickness of the polarizer 14.
  • Fig. 10 is a comparison diagram of Fig. 9. As shown in FIG. 10, the thinner the thickness of the first transparent adhesive 18 is, the more likely it is that the step height difference of the polarizer 14 will not be sufficiently covered before being cured (see the shaded area in FIG. 10). The thicker the thickness of the first transparent adhesive 18 is, the more it can be cured after fully covering the step height difference of the polarizer 14.
  • FIG. 11 is a schematic diagram of a cross-sectional structure of an OLED display panel in a third embodiment of the present application. 11 and 9, it can be seen that the structure of the OLED display panel 3 in this embodiment is roughly the same as that of the OLED display panel 2 in the embodiment of FIG. 9, except that the encapsulation layer 13 has a whole surface The second transparent adhesive glue 19.
  • the second transparent adhesive glue 19 can enhance the bonding effect between the encapsulation layer 13 and the polarizer 14.
  • Fig. 12 is a comparison diagram of Fig. 11. Referring to Figures 11 and 12, the entire surface of the second transparent adhesive 19 is compared with only the second transparent adhesive 19 under the polarizer 14, which can reduce the step when the first transparent adhesive 18 fills the opening 14a
  • the height difference avoids the phenomenon that the step height difference of the polarizer 14 is cured before it can fully cover the polarizer 14 (see the shaded area in FIG. 12). In other words, the smaller the step height difference of the opening 14a, the better the filling effect.
  • This solution can also be combined with the OLED display panel 1 in the embodiment of FIG. 2.
  • FIG. 13 is a schematic diagram of a cross-sectional structure of an OLED display panel in a fourth embodiment of the present application. Referring to FIG. 13 and FIG. 2, it can be seen that the structure of the OLED display panel 4 in this embodiment is roughly the same as that of the OLED display panel 1 in the embodiment in FIG. 2, except that the difference lies between the encapsulation layer 13 and the polarizer 14 A touch layer 20 is provided to realize the touch function.
  • the touch layer 20 has no openings in the area corresponding to the transparent display area 10a, so as to reduce the height difference of filling steps.
  • the area of the touch layer 20 corresponding to the transparent display area 10a has no touch structure, so as to increase the light transmittance of the transparent display area 10a.
  • FIG. 14 is a schematic diagram of a cross-sectional structure of an OLED display panel in a fifth embodiment of the present application. 14 and FIG. 2, it can be seen that the structure of the OLED display panel 5 in this embodiment is substantially the same as the OLED display panel 1 in the embodiment in FIG. 2, except that the opening 14a is formed by the sidewall of the polarizer 14 And the blocking wall 17 is enclosed, and the side wall of the polarizer 14 and/or the side wall of the blocking wall 17 has a light shielding layer 21.
  • the light shielding layer 21 can prevent light leakage at the edge of the polarizer opening 14a when the first OLED sub-pixel 111 and the second OLED sub-pixel 121 emit light, which will affect the display effect; or prevent only the second OLED sub-pixel 121 from emitting light in the polarizer opening. 14a Light leakage.
  • the light shielding layer 21 may be made of a black matrix material or a black support column material.
  • the light shielding layer 21 is provided on the side wall of the polarizer 14.
  • the present application also provides a display device.
  • the display device can be a display device such as a mobile phone, a tablet computer, a car display, etc.
  • the display device includes:
  • the device body has a device area
  • the device area is located below the transparent display area 10a of the OLED display panels 1, 2, 3, 4, and 5, and the device area is provided with a photosensitive device that emits or collects light through the transparent display area 10a.
  • the photosensitive device includes a camera and/or a light sensor.
  • the light sensor includes one or a combination of an iris recognition sensor and a fingerprint recognition sensor.

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Abstract

一种显示装置及其OLED显示面板，OLED显示面板包括基底（10）、第一OLED像素单元（11）与第二OLED像素单元（12）、封装层（13）、偏光片（14）以及盖板（15），盖板（15）与封装层（13）之间的偏光片开口（14a）内填充有透明填充胶（16）。一方面，在透明显示区（10a）与非透明显示区（10b）分别设置第一OLED像素单元（11）与第二OLED像素单元（12），使得两OLED像素单元被驱动时，透明显示区（10a）与非透明显示区（10b）形成一全面屏；第一OLED像素单元（11）未被驱动时，透明显示区（10a）执行透光功能；另一方面，偏光片（14）在对应透明显示区（10a）的区域具有开口（14a），提高了透光率；第三方面，开口（14a）内具有透明填充胶（16），避免了灰尘进入；第四方面，透明填充胶（16）折射率大于空气折射率，能减弱偏光片开口（14a）的毛边现象。

Description

显示装置及其OLED显示面板
相关申请
本申请要求2019年03月29日申请的，申请号为201910252024.9，名称为“显示装置及其OLED显示面板”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及OLED显示技术领域，尤其涉及一种显示装置及其OLED显示面板。
背景技术
随着显示装置的快速发展，用户对显示屏幕占比的要求越来越高。由于移动终端的显示屏幕上方通常需要安装摄像头、传感器、听筒等元件，因此先前技术中采用异形屏(notch)设计方案，显示屏幕上部通常会预留一部分区域用于安装上述元件，影响了显示屏幕的整体一致性，从而使全面屏显示受到业界越来越多的关注。
发明内容
本申请的目的是提供一种用于全面屏的显示装置及其OLED显示面板。
本申请的有益效果包括但不限于：
1)一方面，在透明显示区与非透明显示区分别设置第一OLED像素单元与第二OLED像素单元，使得第一OLED像素单元与第二OLED像素单元被驱动时，透明显示区与非透明显示区形成一全面屏；第一OLED像素单元未被驱动时，透明显示区执行透光功能，可在显示屏下进行光信号采集；另一方面，偏光片在对应透明显示区的区域具有开口，提高了透光率；第三方面，开口内具有透明填充胶，避免了灰尘进入；第四方面，透明填充胶折射率大于空气折射率，提升了显示效果，并且填补了偏光片边缘不平整的缺陷，进而减弱偏光片开口的毛边现象。
2)可选方案中，第一OLED像素单元包括若干第一OLED子像素，每一第一OLED子像素至少包括：透光阳极、位于所述透光阳极上的OLED发光材料层、以及位于所述OLED发光材料层上的透光阴极。若干第一OLED子像素可以为红、绿、蓝三基色子像素，也可以为现有其它的三基色、四基色子像素。上述方案可以实现彩色发光，能提升客户体验。
特别地，不同第一OLED子像素的透光阳极为相互独立的块状阳极，每个块状阳极为圆 形、椭圆形、哑铃形、或葫芦形。上述图案可以改变了衍射产生的周期性结构，即改变了衍射场的分布，从而减弱衍射现象。
3)可选方案中，阵列式排布的第一OLED像素单元为AM驱动方式；所述OLED显示面板包括一行若干列透光阳极、或一列若干行透光阳极，所述透光阴极为面电极。按列分布的透光阳极相对于阵列式的块状透光阳极可以省略行与行之间的图形，按行分布的透光阳极相对于阵列式的块状透光阳极可以省略列与列之间的图形，上述两种结构都简化了平面方向的图形，可以缓解上下方向上的光线衍射问题，因而透明显示区下的光传感器成像效果佳。
4)可选方案中，对于3)可选方案中的每列透光阳极或每行透光阳极，包括多个相互电连接的阳极块，每个阳极块为圆形、椭圆形、哑铃形、或葫芦形。上述形状能进一步降低衍射问题。
5)可选方案中，对于3)可选方案中的AM驱动方式，所述基底与所述透光阳极之间具有像素驱动电路，用于驱动所述阵列式排布的第一OLED像素单元执行显示功能；所述像素驱动电路包括1T、2T1C、3T1C、或7T1C。
6)可选方案中，所述阵列式排布的第一OLED像素单元为PM驱动方式；所述OLED显示面板包括多行透光阳极和多列透光阴极，或包括多列透光阳极和多行透光阴极，以在交叉点选中第一OLED子像素。为降低OLED显示面板成像时的衍射问题，进一步地，透光阳极可以为波浪形条状阳极、透光阴极可以为波浪形条状阴极。
其它可选方案中，OLED显示面板也可以包括一行若干列透光阳极、或一列若干行透光阳极，透光阴极为面电极。为降低OLED显示面板成像时的衍射问题，每列透光阳极或每行透光阳极包括多个相互电连接的阳极块，每个阳极块为圆形、椭圆形、哑铃形、或葫芦形。
7)可选方案中，所述透明填充胶为固化后的OCR或LOCA。OCR(Optically Clear Resin，紫外固化或者热固化透明树酯)，LOCA(Liquid Optically Clear Adhesive，液态透明光学胶)在固化前，均为流动性好的水状，填充能力强。
8)可选方案中，所述偏光片、透明填充胶层与所述盖板之间具有第一透明粘合胶；和/或所述偏光片、透明填充胶层与所述封装层之间具有第二透明粘合胶。第一透明粘合胶能提升偏光片与盖板之间的粘附性能。第二透明粘合胶能提升偏光片与封装层之间的粘附性能。
9)可选方案中，所述偏光片与所述盖板之间具有第一透明粘合胶，所述第一透明粘合胶填充所述偏光片的开口，以形成所述透明填充胶层。相对于8)可选方案中，先在偏光片的开口内形成透明填充胶层，之后再在偏光片以及透明填充胶层上依次布置第一透明粘合胶、盖板的方案，本方案省略先在偏光片的开口内形成透明填充胶层的步骤，直接在偏光片上布置第一透明粘合胶时，利用进入偏光片开口的第一透明粘合胶形成透明填充胶层，步骤 较少。
特别地，所述第一透明粘合胶的厚度为所述偏光片厚度的两倍以上。
更特别地，所述第一透明粘合胶的厚度为所述偏光片厚度的三倍以上。
第一透明粘合胶的厚度越薄，越容易出现还未来得及充分覆盖偏光片的台阶高度差即被固化现象。第一透明粘合胶的厚度越厚，越能在充分覆盖偏光片的台阶高度差，减少气泡。
本方案中，封装层上具有整面的第二透明粘合胶。这是因为：整面的第二透明粘合胶相对于仅偏光片下具有第二透明粘合胶，可以降低第一透明粘合胶填充开口时的台阶高度差，台阶高度差越小，填充效果越好。
10)可选方案中，封装层与所述偏光片之间设有触控层，以实现触控功能。本可选方案中，所述触控层对应所述透明显示区的区域无开口，以降低填充台阶高度差。本可选方案中，触控层中对应所述透明显示区的区域无触控结构，以提高透明显示区的透光率。
11)可选方案中，开口由偏光片的侧壁围合而成，所述偏光片的侧壁具有遮光层；或所述开口由偏光片的侧壁以及挡墙围合而成，所述偏光片的侧壁和/或所述挡墙的侧壁具有遮光层。特别地，遮光层为黑矩阵材料或黑色支撑柱材料制成。遮光层可以防止第一OLED子像素与第二OLED子像素发光时，在偏光片开口边缘漏光，相互影响显示效果；或防止仅第二OLED子像素发光时，在偏光片开口漏光。
附图说明
图1是本申请一实施例中的OLED显示面板的俯视图；
图2是沿着图1中的AA直线的剖视图；
图3是沿着图1中的BB直线的剖视图，其中省略了封装层、透明填充胶层、以及盖板；
图4与图5分别是另外两种OLED透光显示面板中的透光阳极的俯视图；
图6是再一种OLED显示面板中的透光阳极的俯视图；
图7是又一种OLED显示面板中的透光阳极的俯视图；
图8是沿图1中的CC直线的剖视图，其中省略了封装层、透明填充胶层、以及盖板；
图9是本申请第二实施例中的OLED显示面板的截面结构示意图；
图10是图9的对比例；
图11是本申请第三实施例中的OLED显示面板的截面结构示意图；
图12是图11的对比例；
图13是本申请第四实施例中的OLED显示面板的截面结构示意图；
图14是本申请第五实施例中的OLED显示面板的截面结构示意图。
具体实施方式
为使本申请的上述目的、特征和优点能够更为明显易懂，下面结合附图对本申请的具体实施例做详细的说明。
图1是本申请第一实施例中的OLED显示面板的俯视图；图2是沿着图1中的AA直线的剖视图。
参照图1与图2所示，该OLED显示面板1，包括：
基底10，包括透明显示区10a与非透明显示区10b；
第一OLED像素单元11与第二OLED像素单元12，第一OLED像素单元11位于透明显示区10a，第二OLED像素单元12位于非透明显示区10b；
封装层13，覆盖第一OLED像素单元11以及第二OLED像素单元12；
偏光片14，位于封装层13上，偏光片14具有开口14a，开口14a对应透明显示区10a；
盖板15，位于偏光片14上，盖板15与封装层13之间的偏光片开口14a内填充有透明填充胶以形成透明填充胶层16。
基底10可以为硬质基底，材质例如为玻璃，也可以为软质基底，材质例如为聚酰亚胺(PI)。多个第一OLED像素单元11可呈阵列式排布。所有第一OLED像素单元11均可位于透明显示区10a。所有第二OLED像素单元12均可位于非透明显示区10b。第一OLED像素单元11以及第二OLED像素单元12可设置在被封装层13覆盖的同一层。偏光片14及开口14a均位于盖板15与封装层13之间。
图3是沿着图1中的BB直线的剖视图，其中省略了封装层、透明填充胶层、以及盖板。参照图3所示，第一OLED像素单元11包括若干第一OLED子像素111，每一第一OLED子像素111至少包括：透光阳极111a、位于透光阳极111a上的OLED发光材料层111b、以及位于OLED发光材料层111b上的透光阴极111c。每一第一OLED子像素111的透光阳极111a与透光阴极111c之间施加驱动电压时，阵列式排布的第一OLED像素单元11执行显示功能。每一第一OLED子像素111的透光阳极111a与透光阴极111c之间未施加驱动电压时，阵列式排布的第一OLED像素单元11执行透光功能。
参照图3所示，每个透光阳极111a上可以设有像素定义层111d，像素定义层111d具有开口，OLED发光材料层111b位于该开口内。
图1中，阵列式排布的第一OLED像素单元11中的透光阳极111a呈一行、若干列分布。其它可选方案中，各透光阳极111a也可以呈一列、若干行分布、或按行、列式分布。按列分布的透光阳极111a相对于行列式分布的块状透光阳极，由于省略了行与行之间的图形， 简化了平面方向的图形，可以缓解上下方向上的光线衍射问题，因而透明显示区10a下面的光传感器成像效果佳。同理，按行分布的透光阳极111a相对于行列式分布的块状透光阳极，省略了列与列之间的图形。
图4与图5分别是另外两种OLED显示面板中的透光阳极的俯视图。可选方案中，如图4所示的OLED显示面板1，每列透光阳极111a可以为哑铃形；或如图5所示的OLED显示面板1，每列透光阳极111a可以为葫芦形。其它可选方案中，每列透光阳极111a还可以为圆形或椭圆形。上述形状均能进一步降低衍射问题。
OLED发光材料层111b可以与透光阳极111a的形状一致。
一个可选方案中，各列或各行第一OLED子像素111的透光阴极111c可以为一整面的面电极。
对于透明显示区的阵列式排布的第一OLED像素单元11，其驱动方式可以为a)被动式，或b)主动式，或c)半主动式。
被动驱动式OLED(Passive Matrix OLED，PMOLED)，也称无源驱动式中，单纯地以阴极、阳极构成矩阵状，以扫描方式点亮阵列中行列交叉点的像素，每个像素都是操作在短脉冲模式下，为瞬间高亮度发光。换言之，每个OLED子像素的寻址直接受控于外部电路。
对于a)方案，阵列式排布的第一OLED像素单元11无像素驱动电路，各第一OLED子像素111的透光阳极111a连接一外接电路，透光阴极111c接地。该外接电路可以为驱动显示芯片(DDIC)的数据信号通道。
主动驱动式OLED(Active Matrix OLED，AMOLED)，也称有源驱动式中，包括薄膜晶体管(TFT)阵列，每一薄膜晶体管单元包含存储电容。AMOLED是采用独立的薄膜电晶体管控制每个像素发光，且每个像素可以连续发光。换言之，每个OLED子像素的寻址直接受控于薄膜晶体管阵列。薄膜电晶体管阵列的行选择信号可以来源于GIP电路、列选择信号可以来源于显示驱动集成芯片(DDIC)。
对于a)方案，一个可选方案中，OLED显示面板1可以包括多行透光阳极111a和多列透光阴极111c，或包括多列透光阳极111a和多行透光阴极111c，以选中位于交叉点的第一OLED子像素111。
图6是再一种OLED显示面板中的透光阳极的俯视图。参照图6所示，本可选方案中，透光阳极111a为多列波浪形条状阳极；相应地，透光阴极111c(未图示)为多行波浪形条状阴极。在具体实施过程中，OLED发光材料层111b与阳极111a的形状一致。
另一个可选方案中，OLED显示面板1也可以包括一行若干列透光阳极111a、或一列若干行透光阳极111a，透光阴极111c为面电极。对于透光阳极111a为一行若干列的方案，某 列透光阳极111a可以通过施加电压以选中该列第一OLED子像素111。对于透光阳极111a为一列若干行的方案，某行透光阳极111a可以通过施加电压以选中该行第一OLED子像素111。
对于b)方案，阵列式排布的第一OLED像素单元11具有像素驱动电路，该像素驱动电路可以为2T1C、3T1C、7T1C等传统驱动电路，也可以仅包括实现开关功能的1T驱动电路。
半主动驱动式，与主动式的区别在于，像素驱动电路只包括一个开关晶体管(1T)。对于c)方案，开关晶体管的栅极连接扫描信号，源极连接数据线，漏极连接第一OLED子像素111的透光阳极111a。扫描信号例如可以来源于GIP电路的扫描信号，数据线连接显示驱动集成芯片(DDIC)的数据信号通道。透光阴极111c接地。
图7是又一种OLED显示面板中的透光阳极的俯视图。参照图7所示，本可选方案中，不同列第一OLED子像素111的透光阳极111a为相互独立的块状阳极，各块状阳极采用连接部连接在一起。每个块状阳极如图4与图5所示，可以为圆形、椭圆形、哑铃形、或葫芦形。
图7中的各列第一OLED子像素111的驱动方式可以为PM驱动方式或AM驱动方式。
其它可选方案中，不同行第一OLED子像素111的透光阳极111a为相互独立的块状阳极，各块状阳极采用连接部连接在一起。每个块状阳极可以如图4与图5所示，可以为圆形、椭圆形、哑铃形、或葫芦形。
图8是沿图1中的CC直线的剖视图，其中省略了封装层、透明填充胶层、以及盖板。参照图8与图1所示，第二OLED像素单元12包括若干第二OLED子像素121，每一第二OLED子像素121自下而上至少依次包括：形成于基底10上的反射阳极121a、具有开口的像素定义层121d、位于开口内的OLED发光材料层121b、以及位于OLED发光材料层121b上的透光阴极121c。
封装层13可以采用传统的薄膜封装(TFE)技术，包括多层有机、无机交叠结构。封装层13可以防止外界水汽、氧气进入第一OLED像素单元11以及第二OLED像素单元12，影响OLED发光材料层111b、121b的发光效率。
偏光片14可以消除从OLED显示面板1进入环境的光再被反射进入OLED显示面板1，因此，可以消除环境光干扰OLED显示面板1的正常显示。去除透明显示区10a处的偏光片14，可以提高该区的透光率。
盖板15用于抗划痕，保护其下的结构。
一个可选方案中，透明填充胶层16为固化后的OCR或LOCA。OCR(Optically Clear  Resin，紫外固化或者热固化透明树酯)，LOCA(Liquid Optically Clear Adhesive，液态透明光学胶)在固化前，均为流动性好的水状，因而填充能力强。
参照图2所示，为限制形成透明填充胶层16的液态的透明填充胶的流动，在开口14a并非仅由偏光片的侧壁围合而成的实施例中，OLED显示面板1还包括挡墙17。挡墙17可以位于边框区10c。
仍参照图2所示，为提高偏光片13与盖板15之间的粘合效果，OLED显示面板1还包括设置在偏光片13、透明填充胶层16与盖板15之间的第一透明粘合胶18。第一透明粘合胶18的材质可以为OCA。
图9是本申请第二实施例中的OLED显示面板的截面结构示意图。参照图9与图2所示，可以看出，本实施例中的OLED显示面板2与图2实施例中的OLED显示面板1结构大致相同，区别仅在于：第一透明粘合胶18填充偏光片的开口14a形成透明填充胶层16。
相对于图2实施例中的OLED显示面板1，先在偏光片的开口14a内形成透明填充胶层16，之后再在偏光片14以及透明填充胶层16上依次布置第一透明粘合胶18、盖板15的方案，本方案省略先在偏光片的开口14a内形成透明填充胶层16的步骤，直接在偏光片14上布置第一透明粘合胶18时，利用进入偏光片开口14a的第一透明粘合胶18形成透明填充胶层16，步骤较少，工序简单。
本方案中，第一透明粘合胶18的厚度为偏光片14厚度的两倍以上。或者，第一透明粘合胶18的厚度为偏光片14厚度的三倍以上。
图10是图9的对比图。参照图10所示，第一透明粘合胶18的厚度越薄，越容易出现还未来得及充分覆盖偏光片14的台阶高度差即被固化现象(参见图10中的阴影区域)。第一透明粘合胶18的厚度越厚，越能在充分覆盖偏光片14的台阶高度差后固化。
图11是本申请第三实施例中的OLED显示面板的截面结构示意图。参照图11与图9所示，可以看出，本实施例中的OLED显示面板3与图9实施例中的OLED显示面板2结构大致相同，区别仅在于：封装层13上具有一整面的第二透明粘合胶19。
第二透明粘合胶19可以增强封装层13与偏光片14之间的粘结效果。
图12是图11的对比图。参照图11与图12所示，整面的第二透明粘合胶19相对于仅偏光片14下具有第二透明粘合胶19，可以降低第一透明粘合胶18填充开口14a时的台阶高度差，避免还未来得及充分覆盖偏光片14的台阶高度差即被固化现象(参见图12中的阴影区域)。换言之，开口14a的台阶高度差越小，填充效果越好。
本方案也可以与图2实施例中的OLED显示面板1结合。
图13是本申请第四实施例中的OLED显示面板的截面结构示意图。参照图13与图2 所示，可以看出，本实施例中的OLED显示面板4与图2实施例中的OLED显示面板1结构大致相同，区别仅在于：封装层13与偏光片14之间设有触控层20，以实现触控功能。
本方案中，触控层20对应透明显示区10a的区域无开口，以降低填充台阶高度差。
本方案中，触控层20中对应所述透明显示区10a的区域无触控结构，以提高透明显示区10a的透光率。
图14是本申请第五实施例中的OLED显示面板的截面结构示意图。参照图14与图2所示，可以看出，本实施例中的OLED显示面板5与图2实施例中的OLED显示面板1结构大致相同，区别仅在于：开口14a由偏光片14的侧壁以及挡墙17围合而成，偏光片14的侧壁和/或挡墙17的侧壁具有遮光层21。
遮光层21可以防止第一OLED子像素111与第二OLED子像素121发光时，在偏光片开口14a边缘漏光，相互影响显示效果；或防止仅第二OLED子像素121发光时，在偏光片开口14a漏光。
可选方案中，遮光层21可以为黑矩阵材料或黑色支撑柱材料制成。
对于开口14a仅由偏光片14的侧壁围合而成的结构，遮光层21设置在偏光片14的侧壁。
基于上述OLED显示面板1、2、3、4、5，本申请还提供一种显示装置。
该显示装置可以为手机、平板电脑、车载显示屏等的显示装置。
显示装置包括：
设备本体，具有器件区；
以及上述的OLED显示面板1、2、3、4、5，覆盖在设备本体上；
其中，器件区位于OLED显示面板1、2、3、4、5的透明显示区10a下方，且器件区中设置有透过透明显示区10a发射或者采集光线的感光器件。
感光器件包括：摄像头和/或光线感应器。光线感应器包括：虹膜识别传感器以及指纹识别传感器中的一种或组合。
虽然本申请披露如上，但本申请并非限定于此。任何本领域技术人员，在不脱离本申请的精神和范围内，均可作各种更动与修改，因此本申请的保护范围应当以权利要求所限定的范围为准。

Claims (20)

  1. 一种OLED显示面板，包括：
    基底，所述基底包括透明显示区与非透明显示区；
    多个第一OLED像素单元与多个第二OLED像素单元，所述第一OLED像素单元呈阵列式排列且位于所述透明显示区，所述第二OLED像素单元位于所述非透明显示区；
    封装层，所述封装层覆盖所述第一OLED像素单元以及第二OLED像素单元；
    偏光片，所述偏光片位于所述封装层上，并且所述偏光片具有开口，所述开口对应所述透明显示区；
    盖板，所述盖板位于所述偏光片上，并且所述盖板与所述封装层之间的偏光片开口内填充有透明填充胶以形成透明填充胶层。
  2. 根据权利要求1所述的OLED显示面板，其中，所述第一OLED像素单元包括若干第一OLED子像素，每一第一OLED子像素至少包括：透光阳极、位于所述透光阳极上的OLED发光材料层、以及位于所述OLED发光材料层上的透光阴极；所述第一OLED像素单元用于在每一第一OLED子像素的透光阳极与透光阴极之间施加驱动电压的条件下执行显示功能，在每一第一OLED子像素的透光阳极与透光阴极之间未施加驱动电压的条件下执行透光功能。
  3. 根据权利要求2所述OLED显示面板，其中，不同第一OLED子像素的透光阳极为相互独立的块状阳极，每个块状阳极为圆形、椭圆形、哑铃形、或葫芦形。
  4. 根据权利要求1至3中任一项所述的OLED显示面板，其中，所述第一OLED像素单元为PM驱动方式；所述OLED显示面板包括多行透光阳极和多列透光阴极，或包括多列透光阳极和多行透光阴极。
  5. 根据权利要求4所述的OLED显示面板，其中，所述透光阳极为波浪形条状阳极，所述透光阴极为波浪形条状阴极。
  6. 根据权利要求1至3中任一项所述的OLED显示面板，其中，所述第一OLED像素单元为PM驱动方式或AM驱动方式；所述OLED显示面板包括一行若干列透光阳极、或一列若干行透光阳极，所述透光阴极为面电极。
  7. 根据权利要求6所述的OLED显示面板，其中，每列透光阳极或每行透光阳极包括多个相互电连接的阳极块，每个阳极块为圆形、椭圆形、哑铃形、或葫芦形。
  8. 根据权利要求6所述的OLED显示面板，其中，所述第一OLED像素单元为AM驱动方式，所述基底与所述透光阳极之间具有像素驱动电路，用于驱动所述第一OLED像素单 元执行显示功能。
  9. 根据权利要求1或9所述的OLED显示面板，其中，所述偏光片、透明填充胶层分别与所述盖板之间具有第一透明粘合胶；和/或所述偏光片、透明填充胶层分别与所述封装层之间具有第二透明粘合胶。
  10. 根据权利要求1或9所述的OLED显示面板，其中，所述偏光片与所述盖板之间具有第一透明粘合胶，所述第一透明粘合胶填充所述偏光片的开口，以形成所述透明填充胶层。
  11. 根据权利要求10所述的OLED显示面板，其中，所述偏光片和透明填充胶层分别与所述封装层之间具有第二透明粘合胶。
  12. 根据权利要求10所述的OLED显示面板，其中，所述第一透明粘合胶层的厚度为所述偏光片厚度的两倍以上。
  13. 根据权利要求1所述的OLED显示面板，其中，所述封装层与所述偏光片之间设有触控层。
  14. 根据权利要求13所述的OLED显示面板，其中，所述触控层对应所述透明显示区的区域无开口，以降低填充台阶高度差。
  15. 根据权利要求13所述的OLED显示面板，其中，所述触控层中对应所述透明显示区的区域无触控结构，以提高所述透明显示区的透光率。
  16. 根据权利要求1所述的OLED显示面板，其中，所述开口由偏光片的侧壁围合而成，所述偏光片的侧壁具有遮光层；或所述开口由偏光片的侧壁以及挡墙围合而成，所述偏光片的侧壁和/或所述挡墙的侧壁具有遮光层。
  17. 根据权利要求16所述的OLED显示面板，其中，所述挡墙位于边框区。
  18. 根据权利要求16所述的OLED显示面板，其中，所述遮光层的材料为黑矩阵材料或黑色支撑柱材料。
  19. 一种显示装置，所述显示装置包括：
    设备本体，具有器件区；
    以及权利要求1至18中任一项所述的OLED显示面板，所述OLED显示面板覆盖在所述设备本体上；
    所述器件区位于所述OLED显示面板的透明显示区下方，且所述器件区中设置有透过所述透明显示区发射或者采集光线的感光器件。
  20. 根据权利要求19所述的显示装置，其中，所述感光器件包括摄像头和/或光线感应器。
PCT/CN2019/107916 2019-03-29 2019-09-25 显示装置及其oled显示面板 Ceased WO2020199535A1 (zh)

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