WO2020113852A1 - 显示装置、有机电致发光显示器件及其制造方法 - Google Patents

显示装置、有机电致发光显示器件及其制造方法 Download PDF

Info

Publication number
WO2020113852A1
WO2020113852A1 PCT/CN2019/078599 CN2019078599W WO2020113852A1 WO 2020113852 A1 WO2020113852 A1 WO 2020113852A1 CN 2019078599 W CN2019078599 W CN 2019078599W WO 2020113852 A1 WO2020113852 A1 WO 2020113852A1
Authority
WO
WIPO (PCT)
Prior art keywords
region
light
layer
fluorescent material
hole blocking
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/CN2019/078599
Other languages
English (en)
French (fr)
Inventor
裴龙
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.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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.)
Filing date
Publication date
Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to US16/349,281 priority Critical patent/US11121349B2/en
Publication of WO2020113852A1 publication Critical patent/WO2020113852A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • 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
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • 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
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
    • H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
    • H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
    • 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
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/14—Carrier transporting layers
    • H10K50/15—Hole transporting layers
    • 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
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/18—Carrier blocking layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2101/00—Properties of the organic materials covered by group H10K85/00
    • H10K2101/10—Triplet emission
    • 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
    • H10K59/32—Stacked devices having two or more layers, each emitting at different wavelengths

Definitions

  • the present application relates to a display technology, in particular to a display device, an organic electroluminescence display device and a method of manufacturing the same.
  • each pixel structure includes a plurality of sub-pixels, and each sub-pixel includes an organic electroluminescence (Organic Electroluminescence, EL)
  • the device includes an anode, a cathode, and a light-emitting layer disposed between the two.
  • the light-emitting layer is driven by an electric field between the anode and the cathode, and causes light emission through carrier injection and recombination.
  • the light-emitting layer is made of different materials, different colors of light can be generated.
  • FIG. 1 shows a schematic diagram of a prior art organic electroluminescent device.
  • the prior art organic electroluminescent device includes a hole injection layer/hole transport layer 10, a fluorescent material layer 11, a light emitting layer 12, a hole blocking layer 13, an electron transport layer 14, and an electron injection layer 15.
  • An anode layer (not shown) is provided below the hole injection layer/hole transport layer 10, and a cathode layer (not shown) is provided above the electron injection layer 15.
  • the fluorescent material layer 11 is used to assist the light emitting layer 12 to emit light.
  • FIG. 1 shows a schematic diagram of a prior art organic electroluminescent device.
  • the prior art organic electroluminescent device includes a hole injection layer/hole transport layer 10, a fluorescent material layer 11, a light emitting layer 12, a hole blocking layer 13, an electron transport layer 14, and an electron injection layer 15.
  • An anode layer (not shown) is provided below the hole injection layer/hole transport layer 10, and a cathode layer (not shown) is provided above the electron injection layer 15.
  • the light-emitting layer 12 includes a blue light-emitting region, a green light-emitting region, and a red light-emitting region
  • the fluorescent material layer 11 includes a blue fluorescent material region corresponding to the blue light-emitting region, and a green fluorescent material region corresponding to the green light-emitting region.
  • the red fluorescent material area corresponding to the red light emitting area.
  • FIG. 2 is a schematic diagram showing a situation where alignment defects occur in the light emitting region of the light emitting layer in the organic electroluminescent device of FIG. 1.
  • the blue light-emitting area, the green light-emitting area and the red light-emitting area are made by different masks by evaporation, and after the one-color light-emitting area is completed, the other-color light-emitting area is made. It is easy to produce poor alignment.
  • the blue light-emitting region and the green light-emitting region in the light-emitting layer 12 form a color mixing region R (as shown by the dotted line in FIG. 2) due to poor alignment, resulting in blue and green color mixing.
  • the prior art organic electroluminescent devices have serious color mixing problems, which affect the product yield.
  • the purpose of the present application is to provide a display device, an organic electroluminescence display device, and a manufacturing method thereof, to solve the technical problem of luminescence and color mixing of the light-emitting layer, and to improve the product yield.
  • an organic electroluminescent display device including:
  • a light-emitting layer is provided on the hole transport function layer, and the light-emitting layer includes a first light-emitting region, a second light-emitting region, and a third light-emitting region corresponding to three different colors;
  • a hole blocking layer is provided on the light emitting layer, and the hole blocking layer includes a first hole blocking region, a second hole blocking region, and a third hole blocking region, which are provided at different positions.
  • a hole blocking area is provided at a position corresponding to the first light emitting area
  • the second hole blocking area is provided at a position corresponding to the second light emitting area
  • the third hole blocking area is provided at a corresponding The position of the third light emitting area;
  • the electron transport function layer is provided on the hole blocking layer.
  • the organic electroluminescent display device further includes:
  • a fluorescent material layer is provided between the hole transport function layer and the light-emitting layer, and the fluorescent material layer includes a first fluorescent material region, a second fluorescent material region and a third fluorescent material region corresponding to three different colors ,
  • the first fluorescent material area is provided at a position corresponding to the first light emitting area
  • the second fluorescent material area is provided at a position corresponding to the second light emitting area
  • the third fluorescent material area is provided at Corresponding to the position of the third light emitting area.
  • the first light-emitting area, the second light-emitting area and the third light-emitting area are a blue light area, a green light area and a red light area, respectively
  • the first fluorescent material area, the first The second fluorescent material region and the third fluorescent material region are a blue fluorescent material region, a green fluorescent material region, and a red fluorescent material region, respectively.
  • the hole transport function layer includes at least one of a hole transport layer and a hole injection layer.
  • the electron transport function layer includes at least one of an electron transport layer and an electron injection layer.
  • Another aspect of the present application provides a method for manufacturing an organic electroluminescence display device, including:
  • a light-emitting layer is provided on the hole transport function layer, and the light-emitting layer includes a first light-emitting area, a second light-emitting area, and a third light-emitting area that emit three different colors correspondingly;
  • a hole blocking layer is provided on the light-emitting layer, and the hole blocking layer includes a first hole blocking region, a second hole blocking region, and a third hole blocking region provided at different positions.
  • the hole blocking area is provided at a position corresponding to the first light emitting area
  • the second hole blocking area is provided at a position corresponding to the second light emitting area
  • the third hole blocking area is provided at a corresponding position The position of the third light-emitting area
  • An electron transport function layer is provided on the hole blocking layer.
  • the step of providing the light-emitting layer and the step of providing the hole blocking layer according to the first light-emitting region, the first hole-blocking region, and the second light-emitting region ,
  • the second hole blocking area, the third light emitting area and the third hole blocking area are arranged in this order.
  • the step of providing the light-emitting layer and the step of providing the hole blocking layer include:
  • the third light-emitting region and the third hole blocking region are manufactured under the same evaporation process using the same mask.
  • the first light emitting region, the second light emitting region, the third light emitting region, the first hole blocking region, the second hole blocking region, and the third void is made with a thin-film metal mask.
  • the method further includes:
  • a fluorescent material layer is provided between the hole transport function layer and the light-emitting layer, the fluorescent material layer includes a first fluorescent material region, a second fluorescent material region and a third fluorescent material region corresponding to three different colors, The first fluorescent material area is provided at a position corresponding to the first light emitting area, the second fluorescent material area is provided at a position corresponding to the second light emitting area, and the third fluorescent material area is provided at a corresponding The third light emitting area.
  • the first light-emitting area, the second light-emitting area and the third light-emitting area are a blue light area, a green light area and a red light area, respectively
  • the first fluorescent material area, the first The second fluorescent material region and the third fluorescent material region are a blue fluorescent material region, a green fluorescent material region, and a red fluorescent material region, respectively.
  • the hole transport function layer includes at least one of a hole transport layer and a hole injection layer.
  • the electron transport function layer includes at least one of an electron transport layer and an electron injection layer.
  • a further aspect of the present application provides a display device including a plurality of organic electroluminescent display devices, each of which includes:
  • a light-emitting layer is provided on the hole transport function layer, and the light-emitting layer includes a first light-emitting region, a second light-emitting region, and a third light-emitting region corresponding to three different colors;
  • a hole blocking layer is provided on the light emitting layer, and the hole blocking layer includes a first hole blocking region, a second hole blocking region, and a third hole blocking region, which are provided at different positions.
  • a hole blocking area is provided at a position corresponding to the first light emitting area
  • the second hole blocking area is provided at a position corresponding to the second light emitting area
  • the third hole blocking area is provided at a corresponding The position of the third light emitting area;
  • the electron transport function layer is provided on the hole blocking layer.
  • the organic electroluminescent display device further includes:
  • a fluorescent material layer is provided between the hole transport function layer and the light-emitting layer, and the fluorescent material layer includes a first fluorescent material region, a second fluorescent material region and a third fluorescent material region corresponding to three different colors ,
  • the first fluorescent material area is provided at a position corresponding to the first light emitting area
  • the second fluorescent material area is provided at a position corresponding to the second light emitting area
  • the third fluorescent material area is provided at Corresponding to the position of the third light emitting area.
  • the first light-emitting area, the second light-emitting area and the third light-emitting area are a blue light area, a green light area and a red light area, respectively
  • the first fluorescent material area, the first The second fluorescent material region and the third fluorescent material region are a blue fluorescent material region, a green fluorescent material region, and a red fluorescent material region, respectively.
  • the hole transport function layer includes at least one of a hole transport layer and a hole injection layer.
  • the electron transport function layer includes at least one of an electron transport layer and an electron injection layer.
  • the hole blocking layer includes a first hole blocking region, a second hole blocking region, and a third hole blocking region, which are disposed at different positions.
  • the first hole blocking region is disposed at the first of the corresponding light emitting layer In the position of the light emitting area, the second hole blocking area is provided at the position corresponding to the second light emitting area of the light emitting layer, and the third hole blocking area is provided at the position corresponding to the third light emitting area of the light emitting layer.
  • FIG. 1 shows a schematic diagram of a prior art organic electroluminescent device.
  • FIG. 2 is a schematic diagram showing a situation where alignment defects occur in the light emitting region of the light emitting layer in the organic electroluminescent device of FIG. 1.
  • Fig. 3 shows a schematic diagram of an organic electroluminescent device according to the present application.
  • FIG. 4 is a schematic diagram showing a situation where alignment defects occur in the light emitting region of the light emitting layer in the organic electroluminescent device of FIG. 3.
  • FIG. 5 shows a flowchart of a method of manufacturing an organic electroluminescent device according to the present application.
  • an organic electroluminescence (EL) device includes a hole transport function layer 20, a fluorescent material layer 21, a light emitting layer 22, and a hole blocking layer (hole blocking layer) layer, HBL) 23 and electron transport function layer (including electron transport layer (electron transmission layer (ETL) 24 and electron injection layer (EIL) 25.
  • the organic electroluminescent device may further include an anode layer (not shown) disposed under the hole transport function layer 20 and a cathode layer (not shown) disposed above the electron transport function layer.
  • the light-emitting layer 22 is driven by an electric field between an anode and a cathode, and causes light emission through injection and recombination of carriers (ie, electrons and holes).
  • the hole transport function layer 20 is used for injection and transport of holes, which may be a hole transport layer (hole transmission layer (HTL) or hole injection layer (hole injection layer, HIL), or both a hole transport layer and a hole injection layer.
  • the electron transport function layer is used for the injection and transport of electrons. It may be an electron transport layer or an electron injection layer, or it may include both an electron transport layer and an electron injection layer.
  • the hole transport function layer 20 includes a hole transport layer or a hole injection layer, and the electron transport function layer includes an electron transport layer 24 and an electron injection layer 25, but other combinations may also be used. Not limited to this.
  • the fluorescent material layer 21 is provided on the hole transport function layer 20, specifically between the hole transport function layer 20 and the light emitting layer 22.
  • the light emitting layer 22 is provided on the hole transport function layer 20, specifically on the fluorescent material layer 21.
  • the light-emitting layer 22 is an organic semiconductor, which has a special energy band structure.
  • the light-emitting layer 22 is driven by an electric field between the anode and the cathode, and electrons and holes recombine in the light-emitting layer 22 to emit photons of a certain wavelength.
  • the fluorescent material layer 21 is used to assist the light emitting layer 22 to emit light.
  • the fluorescent material layer 21 includes a first fluorescent material region 211, a second fluorescent material region 212, and a third fluorescent material region 213 corresponding to three different colors.
  • the first fluorescent material region 211, the second fluorescent material region 212, and the third fluorescent material region 213 are a blue fluorescent material region, a green fluorescent material region, and a red fluorescent material region, respectively.
  • the light-emitting layer 22 includes a first light-emitting area 221, a second light-emitting area 222, and a third light-emitting area 223 that emit light of three different colors.
  • the organic material emitting blue light is disposed in the first light-emitting region 221, the organic material emitting green light is disposed in the second light-emitting region 222, and the organic material emitting red light is disposed in the third light-emitting region 223.
  • the first fluorescent material region 211 is disposed at a position corresponding to the first light emitting region 221
  • the second fluorescent material region 212 is disposed at a position corresponding to the second light emitting region 222
  • the third fluorescent material region 213 is disposed corresponding to the third light emitting region 223 Position.
  • the first fluorescent material region 211 corresponds to the first light emitting region 221
  • the second fluorescent material region 212 corresponds to the second light emitting region 222
  • the third fluorescent material region 213 corresponds to the third light emitting region 223.
  • the hole blocking layer 23 is provided on the light emitting layer 22 for blocking the passage of holes from the anode layer.
  • the energy barrier for transporting electrons between the hole blocking layer 23 and the light emitting layer 22 is much lower than the energy barrier for transporting holes, so electrons can enter the light emitting layer 22 through the hole blocking layer 23, and holes can hardly pass through the hole blocking layer 23 Therefore, the hole blocking layer 23 has a significant hole blocking effect.
  • the hole blocking layer 23 includes a first hole blocking region 231, a second hole blocking region 232, and a third hole blocking region 233 provided at different positions.
  • the first hole blocking region 231 is provided At a position corresponding to the first light emitting area 221, the second hole blocking area 232 is provided at a position corresponding to the second light emitting area 222, and the third hole blocking area 233 is provided at a position corresponding to the third light emitting area 223.
  • the electron transport layer 24 is provided on the hole blocking layer 23, and the electron injection layer 25 is provided on the electron transport layer 24. In other embodiments, only the electron transport layer 24 or only the electron injection layer 25 may be provided. In addition, an electron blocking layer (not shown) may be provided between the hole transport function layer 20 and the light-emitting layer 22 or the fluorescent material layer 21.
  • FIG. 4 is a schematic diagram showing a situation where alignment defects occur in the light emitting region of the light emitting layer in the organic electroluminescent device of FIG. 3.
  • misregistration occurs in the light-emitting region of the light-emitting layer 22 and a mixed color region occurs, holes in the mixed color region cannot effectively emit light because they cannot pass through the hole blocking region, effectively suppressing the occurrence of color mixing.
  • the green light-emitting region is stacked on the blue light-emitting region due to poor alignment during manufacturing. At this time, the blue light-emitting region is on the bottom and the green light-emitting region is on the top.
  • the blue light emitting region from bottom to top are the blue light emitting region, the hole blocking region corresponding to the blue light emitting region, the green light emitting region, and the hole blocking region corresponding to the green light emitting region.
  • the color mixing region R1 in the blue light emitting region (shown by the dotted line in FIG. 4) can normally emit blue light because the hole is not blocked by the hole blocking region.
  • the mixed color region R2 in the green light emitting region shown by the dotted line in FIG.
  • the hole blocking layer 23 includes a first hole blocking region 231, a second hole blocking region 232, and a third hole blocking region 233 provided at different positions.
  • the first hole The blocking region 231 is disposed at a position corresponding to the first light emitting region 221 of the light emitting layer 22
  • the second hole blocking region 232 is disposed at a position corresponding to the second light emitting region 222 of the light emitting layer 22
  • the third hole blocking region 233 is disposed In the position corresponding to the third light emitting region 223 of the light emitting layer 22.
  • FIGS. 3 and 5 shows an organic electroluminescent device (Organic Electroluminescence, EL) manufacturing method flow chart. Please refer to FIGS. 3 and 5 together.
  • the manufacturing method of the organic electroluminescent device of the present application includes the following steps:
  • the hole transport function layer 20 is provided.
  • the hole transport function layer 20 is used for injection and transport of holes, which may be a hole transport layer (hole transmission layer (HTL) or hole injection layer (hole injection layer, HIL), or both a hole transport layer and a hole injection layer.
  • the hole transport function layer 20 includes a hole transport layer or a hole injection layer, but it is also possible to provide a hole injection layer, and then provide a hole transport layer on the hole injection layer.
  • the method includes the step of providing an electron blocking layer (not shown) on the hole transport function layer 20, the electron blocking layer is used to block the passage of electrons.
  • step S12 a fluorescent material layer 21 is provided on the hole transport function layer 20.
  • step S14 a light-emitting layer 22 is provided on the fluorescent material layer 21.
  • the fluorescent material layer 21 is provided on the hole transport function layer 20, and the light-emitting layer 22 is provided on the fluorescent material layer 21. That is, the fluorescent material layer 21 is provided between the hole transport function layer 20 and the light-emitting layer 22.
  • the light-emitting layer 22 is an organic semiconductor, which has a special energy band structure. The light-emitting layer 22 is driven by an electric field between an anode and a cathode, and electrons and holes recombine in the light-emitting layer 22 to emit a certain wavelength. Photon.
  • the fluorescent material layer 21 is used to assist the light emitting layer 22 to emit light.
  • the fluorescent material layer 21 includes a first fluorescent material region 211, a second fluorescent material region 212, and a third fluorescent material region 213 corresponding to three different colors.
  • the first fluorescent material region 211, the second fluorescent material region 212, and the third fluorescent material region 213 are a blue fluorescent material region, a green fluorescent material region, and a red fluorescent material region, respectively.
  • the light-emitting layer 22 includes a first light-emitting area 221, a second light-emitting area 222, and a third light-emitting area 223 that emit light of three different colors.
  • the organic material emitting blue light is disposed in the first light-emitting region 221, the organic material emitting green light is disposed in the second light-emitting region 222, and the organic material emitting red light is disposed in the third light-emitting region 223.
  • the first fluorescent material region 211 is disposed at a position corresponding to the first light emitting region 221
  • the second fluorescent material region 212 is disposed at a position corresponding to the second light emitting region 222
  • the third fluorescent material region 213 is disposed corresponding to the third light emitting region 223 Position.
  • the first fluorescent material region 211 corresponds to the first light emitting region 221
  • the second fluorescent material region 212 corresponds to the second light emitting region 222
  • the third fluorescent material region 213 corresponds to the third light emitting region 223.
  • a hole blocking layer (HBL) 23 is provided on the light-emitting layer 22.
  • the hole blocking layer 23 is used to block the passage of holes from the anode layer.
  • the energy barrier for transporting electrons between the hole blocking layer 23 and the light emitting layer 22 is much lower than the energy barrier for transporting holes, so electrons can enter the light emitting layer 22 through the hole blocking layer 23, and holes can hardly pass through the hole blocking layer 23 Therefore, the hole blocking layer 23 has a significant hole blocking effect.
  • the hole blocking layer 23 includes a first hole blocking region 231, a second hole blocking region 232, and a third hole blocking region 233 provided at different positions.
  • the first hole blocking region 231 is provided At a position corresponding to the first light emitting area 221, the second hole blocking area 232 is provided at a position corresponding to the second light emitting area 222, and the third hole blocking area 233 is provided at a position corresponding to the third light emitting area 223.
  • an electron transport function layer is provided on the hole blocking layer 23.
  • the electron transport function layer is used for injection and transport of electrons, which may be an electron transport layer (electron transmission layer (ETL) 24 or electron injection layer (EIL) 25, or both the electron transport layer 24 and the electron injection layer 25 are included.
  • ETL electron transmission layer
  • EIL electron injection layer
  • the electron transport function layer includes the electron transport layer 24 and the electron injection layer 25, but it is also possible to provide only the electron transport layer 24 or only the electron injection layer 25.
  • step S14 of providing the light emitting layer 22 and the step S16 of providing the hole blocking layer 23 according to the first light emitting region 221, the first hole blocking region 231, the second light emitting region 222, the second hole blocking region 232, The third light emitting region 223 and the third hole blocking region 233 are provided in this order.
  • the first light-emitting region 221 and the first hole-blocking region 231 are manufactured using the same mask under the same vapor deposition process.
  • the blue light-emitting region and the hole-blocking region corresponding to the blue light-emitting region use the same mask
  • the template is made and made by evaporation in the same process; the second light-emitting area 222 and the second hole blocking area 232 are made under the same evaporation process using the same mask, for example, the green light-emitting area and the corresponding green light-emitting area
  • the hole blocking area is made using the same mask plate and is made by evaporation in the same process; the third light emitting area 223 and the third hole blocking area 233 are made under the same vapor deposition process using the same mask plate, for example
  • the red light-emitting area and the hole blocking area corresponding to the red light-emitting area are made using the same mask plate and are made by vapor deposition under the same process.
  • step S14 of providing the light emitting layer 22 and the step S16 of providing the hole blocking layer 23 include:
  • the third light-emitting region 232 and the third hole-blocking region 233 are fabricated under the same evaporation process using the same mask.
  • the blue light-emitting region, the green light-emitting region and the red light-emitting region in the light-emitting layer use a film metal mask (film metal mask, FMM) is produced by vapor deposition.
  • the hole injection layer, hole transport layer, hole blocking layer, electron transport layer and electron injection layer are made of a common metal mask (common metal mask) is produced by vapor deposition.
  • the manufacturing order of the light emitting layer and the hole blocking layer is: a first light emitting region, a second light emitting region, a third light emitting region and a hole blocking layer.
  • the hole injection layer, the hole transport layer, the electron transport layer and the electron injection layer are manufactured by a common metal mask plate by evaporation.
  • the first light emitting region 221 and the corresponding first hole blocking region 231 are manufactured using the same thin film metal mask under the same vapor deposition process;
  • second The light emitting region 222 and the corresponding second hole blocking region 232 are manufactured using the same thin film metal mask under the same vapor deposition process;
  • the third light emitting region 223 and the corresponding third hole blocking region 233 are used The same thin film metal mask is manufactured under the same vapor deposition process.
  • the present application can use up to three thin-film metal masks to produce the light-emitting area of the light-emitting layer 22 and the hole blocking area of the hole blocking layer 23.
  • the technology requires three thin-film metal masks and a common metal mask.
  • the present application uses up to three evaporation processes to produce the light emitting region of the light emitting layer 22 and the hole blocking region of the hole blocking layer 23, and the prior art requires four evaporation processes. Therefore, effectively reducing the complexity of the manufacturing process is a technical feature of this application.
  • the hole injection layer, the hole transport layer, the fluorescent material layer 21, the light emitting layer 22, the hole blocking layer 23, the electron transport layer 24, and the electron injection layer 25 may use existing materials to be the same as the existing process Or similar manufacturing process, will not repeat them here.
  • the green light-emitting region is stacked on the blue light-emitting region due to poor alignment during manufacturing.
  • the blue light-emitting region is on the bottom and the green light-emitting region is on the top. More specifically, from bottom to top are the blue light emitting region, the hole blocking region corresponding to the blue light emitting region, the green light emitting region, and the hole blocking region corresponding to the green light emitting region.
  • the color mixing region R1 in the blue light emitting region (shown by the dotted line in FIG. 4) can normally emit blue light because the hole is not blocked by the hole blocking region.
  • the mixed color region R2 (shown by the dotted line in FIG. 4) in the green light emitting region is blocked by the hole blocking region corresponding to the green light emitting region when holes are transmitted to the hole blocking region corresponding to the green light emitting region through the green light emitting region, Therefore, it is impossible to enter the color mixing region R2 in the green light emitting region, so the blue light emitting region and the green light emitting region do not produce mixed color light emission, which effectively suppresses the light emission and color mixing.
  • the hole blocking layer 23 includes a first hole blocking region 231, a second hole blocking region 232, and a third hole blocking region 233 provided at different positions.
  • a hole blocking region 231 is disposed at a position corresponding to the first light emitting region 221 of the light emitting layer 22
  • a second hole blocking region 232 is disposed at a position corresponding to the second light emitting region 222 of the light emitting layer 22
  • the area 233 is provided at a position corresponding to the third light emitting area 223 of the light emitting layer 22.
  • the present application also provides a display device.
  • the display device includes a plurality of organic electroluminescent display devices.
  • organic electroluminescent display devices For the structure and manufacturing method of each organic electroluminescent display device, reference may be made to the foregoing description, and details are not described herein again.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

显示装置、有机电致发光显示器件及其制造方法，所述有机电致发光显示器件，包括：空穴传输功能层（20）；发光层（22），设置于空穴传输功能层（20）上，发光层（22）包括对应发出三种不同颜色的第一发光区域（221）、第二发光区域（222）及第三发光区域（223）；空穴阻挡层（23），设置于发光层（22）上，空穴阻挡层（23）包括设置于不同位置上的第一空穴阻挡区域（231）、第二空穴阻挡区域（232）及第三空穴阻挡区域（233），第一空穴阻挡区域（231）设置于对应第一发光区域（221）的位置上，第二空穴阻挡区域（232）设置于对应第二发光区域（222）的位置上，第三空穴阻挡区域（233）设置于对应第三发光区域（223）的位置上；以及电子传输功能层（24），设置于空穴阻挡层（23）上。解决了发光层（22）发光混色的技术问题，提升产品良率。

Description

显示装置、有机电致发光显示器件及其制造方法 技术领域
本申请涉及一种显示技术，特别涉及一种显示装置、有机电致发光显示器件及其制造方法。
 背景技术
有机发光二极体（Organic Light Emitting Diode）显示装置中，每个像素结构包括多个子像素，每个子像素包括一个有机电致发光（Organic Electroluminescence, EL）器件，其包括阳极、阴极和设置在二者之间的发光层，发光层在阳极和阴极之间的电场驱动下，通过载流子注入和复合而导致发光。发光层由不同材料制成时可产生不同颜色的光线。
图1显示一种现有技术的有机电致发光器件的示意图。如图1所示，现有技术的有机电致发光器件包括空穴注入层/空穴传输层10、荧光材料层11、发光层12、空穴阻挡层13、电子传输层14及电子注入层15。在空穴注入层/空穴传输层10下方设置有阳极层（未图示），在电子注入层15上方设置有阴极层（未图示）。荧光材料层11用于辅助发光层12发光。如图1所示，发光层12包括蓝光发光区域、绿光发光区域及红光发光区域，荧光材料层11包括对应蓝光发光区域的蓝色荧光材料区域、对应绿光发光区域的绿色荧光材料区域及对应红光发光区域的红色荧光材料区域。
图2显示图1的有机电致发光器件中发光层的发光区域产生对位不良之情况的示意图。现有技术中，蓝色发光区域、绿色发光区域及红色发光区域是以蒸镀方式通过不同的掩模板制作的，制作完成一种颜色的发光区域后再制作另一种颜色的发光区域，过程中容易产生对位不良的情形。如图2所示，发光层12中蓝色发光区域与绿色发光区域因对位不良形成了混色区域R（如图2中虚线部分所示），造成了蓝光与绿光混色。现有技术的有机电致发光器件存在严重的混色问题，影响了产品良率。
 技术问题
本申请的目的在于提供一种显示装置、有机电致发光显示器件及其制造方法，以解决发光层发光混色的技术问题，提升产品良率。
 技术解决方案
为实现上述目的，本申请一方面提供一种有机电致发光显示器件，包括：
空穴传输功能层；
发光层，设置于所述空穴传输功能层上，所述发光层包括对应发出三种不同颜色的第一发光区域、第二发光区域及第三发光区域；
空穴阻挡层，设置于所述发光层上，所述空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，所述第一空穴阻挡区域设置于对应所述第一发光区域的位置上，所述第二空穴阻挡区域设置于对应所述第二发光区域的位置上，所述第三空穴阻挡区域设置于对应所述第三发光区域的位置上；以及
电子传输功能层，设置于所述空穴阻挡层上。
本申请实施例中，所述有机电致发光显示器件还包括：
荧光材料层，设置于所述空穴传输功能层和所述发光层之间，所述荧光材料层包括对应三种不同颜色的第一荧光材料区域、第二荧光材料区域及第三荧光材料区域，所述第一荧光材料区域设置于对应所述第一发光区域的位置上，所述第二荧光材料区域设置于对应所述第二发光区域的位置上，所述第三荧光材料区域设置于对应所述第三发光区域的位置上。
本申请实施例中，所述第一发光区域、所述第二发光区域及所述第三发光区域分别为蓝光区域、绿光区域及红光区域，所述第一荧光材料区域、所述第二荧光材料区域及所述第三荧光材料区域分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。
本申请实施例中，所述空穴传输功能层包括空穴传输层和空穴注入层之至少一者。
本申请实施例中，所述电子传输功能层包括电子传输层和电子注入层之至少一者。
本申请另一方面提供一种有机电致发光显示器件的制造方法，包括：
设置空穴传输功能层；
在所述空穴传输功能层上设置发光层，所述发光层包括对应发出三种不同颜色的第一发光区域、第二发光区域及第三发光区域；
在所述发光层上设置空穴阻挡层，所述空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，所述第一空穴阻挡区域设置于对应所述第一发光区域的位置上，所述第二空穴阻挡区域设置于对应所述第二发光区域的位置上，所述第三空穴阻挡区域设置于对应所述第三发光区域的位置上；以及
在所述空穴阻挡层上设置电子传输功能层。
本申请实施例中，在设置所述发光层的步骤及在设置所述空穴阻挡层的步骤中，依照所述第一发光区域、所述第一空穴阻挡区域、所述第二发光区域、所述第二空穴阻挡区域、所述第三发光区域及所述第三空穴阻挡区域的顺序进行设置。
本申请实施例中，设置所述发光层的步骤及在设置所述空穴阻挡层的步骤包括：
采用同一掩模板于同一蒸镀制程下制作所述第一发光区域及所述第一空穴阻挡区域；
采用同一掩模板于同一蒸镀制程下制作所述第二发光区域及所述第二空穴阻挡区域；以及
采用同一掩模板于同一蒸镀制程下制作所述第三发光区域及所述第三空穴阻挡区域。
本申请实施例中，所述第一发光区域、所述第二发光区域、所述第三发光区域、所述第一空穴阻挡区域、所述第二空穴阻挡区域及所述第三空穴阻挡区域是采用薄膜金属掩模板制作。
本申请实施例中，所述方法还包括：
在所述空穴传输功能层和所述发光层之间设置荧光材料层，所述荧光材料层包括对应三种不同颜色的第一荧光材料区域、第二荧光材料区域及第三荧光材料区域，所述第一荧光材料区域设置于对应所述第一发光区域的位置上，所述第二荧光材料区域设置于对应所述第二发光区域的位置上，所述第三荧光材料区域设置于对应所述第三发光区域的位置上。
本申请实施例中，所述第一发光区域、所述第二发光区域及所述第三发光区域分别为蓝光区域、绿光区域及红光区域，所述第一荧光材料区域、所述第二荧光材料区域及所述第三荧光材料区域分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。
本申请实施例中，所述空穴传输功能层包括空穴传输层和空穴注入层之至少一者。
本申请实施例中，所述电子传输功能层包括电子传输层和电子注入层之至少一者。
本申请再一方面提供一种显示装置，所述显示装置包括多个有机电致发光显示器件，每个有机电致发光显示器件包括：
空穴传输功能层；
发光层，设置于所述空穴传输功能层上，所述发光层包括对应发出三种不同颜色的第一发光区域、第二发光区域及第三发光区域；
空穴阻挡层，设置于所述发光层上，所述空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，所述第一空穴阻挡区域设置于对应所述第一发光区域的位置上，所述第二空穴阻挡区域设置于对应所述第二发光区域的位置上，所述第三空穴阻挡区域设置于对应所述第三发光区域的位置上；以及
电子传输功能层，设置于所述空穴阻挡层上。
本申请实施例中，所述有机电致发光显示器件还包括：
荧光材料层，设置于所述空穴传输功能层和所述发光层之间，所述荧光材料层包括对应三种不同颜色的第一荧光材料区域、第二荧光材料区域及第三荧光材料区域，所述第一荧光材料区域设置于对应所述第一发光区域的位置上，所述第二荧光材料区域设置于对应所述第二发光区域的位置上，所述第三荧光材料区域设置于对应所述第三发光区域的位置上。
本申请实施例中，所述第一发光区域、所述第二发光区域及所述第三发光区域分别为蓝光区域、绿光区域及红光区域，所述第一荧光材料区域、所述第二荧光材料区域及所述第三荧光材料区域分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。
本申请实施例中，所述空穴传输功能层包括空穴传输层和空穴注入层之至少一者。
本申请实施例中，所述电子传输功能层包括电子传输层和电子注入层之至少一者。
 有益效果
本申请中，空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，第一空穴阻挡区域设置于对应发光层的第一发光区域的位置上，第二空穴阻挡区域设置于对应发光层的第二发光区域的位置上，第三空穴阻挡区域设置于对应发光层的第三发光区域的位置上。因此，当发光层的发光区域因对位不良而相互重叠时，因重叠的发光区域之间存在有空穴阻挡区域，因此可以有效阻挡空穴通过，阻止重叠区域中上方的发光区域发光，避免其与重叠区中下方的发光区域混色而导致混色发光的情形，有效解决现有技术存在的有机电致发光器件严重混色的问题，提升产品良率。
 附图说明
图1显示一种现有技术的有机电致发光器件的示意图。
图2显示图1的有机电致发光器件中发光层的发光区域产生对位不良之情况的示意图。
图3显示根据本申请的有机电致发光器件的示意图。
图4显示图3的有机电致发光器件中发光层的发光区域产生对位不良之情况的示意图。
图5显示根据本申请的有机电致发光器件的制造方法的流程图。
 本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，本申请说明书所使用的词语“实施例”意指用作实例、示例或例证，并不用于限定本申请。
图3显示根据本申请的有机电致发光器件的示意图。如图3所示，有机电致发光（Organic Electroluminescence, EL）器件包括空穴传输功能层20、荧光材料层21、发光层22、空穴阻挡层（hole blocking layer, HBL）23及电子传输功能层（包括电子传输层（electron transmission layer, ETL）24及电子注入层（electron injection layer, EIL）25。有机电致发光器件还可包括设置于空穴传输功能层20下方的阳极层（未图示）以及设置于电子传输功能层上方的阴极层（未图示）。发光层22在阳极（anode）和阴极（cathode）之间的电场驱动下，通过载流子（即电子和空穴）注入和复合而导致发光。
空穴传输功能层20用于空穴的注入和传输，其可以是空穴传输层（hole transmission layer, HTL）或空穴注入层（hole injection layer, HIL），或同时包含了空穴传输层及空穴注入层。电子传输功能层用于电子的注入和传输，其可以是电子传输层或电子注入层，或同时包含了电子传输层及电子注入层。在图3显示的例子中，空穴传输功能层20包括空穴传输层或空穴注入层，电子传输功能层包括电子传输层24及电子注入层25，但是也可采用其他的组合，本申请不限于此。
荧光材料层21设置于空穴传输功能层20上，具体设置于空穴传输功能层20和发光层22之间。发光层22设置于空穴传输功能层20上，具体设置于荧光材料层21上。发光层22为有机物半导体，其具有特殊的能带结构，发光层22在阳极和阴极之间的电场驱动下，电子与电洞在发光层22复合而散发出一定波长的光子。荧光材料层21用于辅助发光层22发光。
如图3所示，荧光材料层21包括对应三种不同颜色的第一荧光材料区域211、第二荧光材料区域212及第三荧光材料区域213。举例来说，第一荧光材料区域211、第二荧光材料区域212及第三荧光材料区域213分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。发光层22包括发出三种不同颜色的光的第一发光区域221、第二发光区域222及第三发光区域223。举例来说，发蓝光的有机材料设置于第一发光区域221、发绿光的有机材料设置于第二发光区域222、发红光的有机材料设置于第三发光区域223。第一荧光材料区域211设置于对应第一发光区域221的位置上，第二荧光材料区域212设置于对应第二发光区域222的位置上，第三荧光材料区域213设置于对应第三发光区域223的位置上。举例来说，第一荧光材料区域211对应第一发光区域221，第二荧光材料区域212对应第二发光区域222，第三荧光材料区域213对应第三发光区域223。
空穴阻挡层23设置于发光层22上，用于阻挡来自阳极层的空穴通过。空穴阻挡层23与发光层22间传输电子的能障远低于传输空穴的能障，因此电子可通过空穴阻挡层23进入发光层22，而空穴很难通过空穴阻挡层23，因此空穴阻挡层23有明显的空穴阻挡作用。如图3所示，空穴阻挡层23包括设置于不同位置上的第一空穴阻挡区域231、第二空穴阻挡区域232及第三空穴阻挡区域233，第一空穴阻挡区域231设置于对应第一发光区域221的位置上，第二空穴阻挡区域232设置于对应第二发光区域222的位置上，第三空穴阻挡区域233设置于对应第三发光区域223的位置上。
如图3所示，电子传输层24设置于空穴阻挡层23上，电子注入层25设置于电子传输层24上。在其他实施例中，也可仅设置电子传输层24，或仅设置电子注入层25。另外，在空穴传输功能层20与发光层22或荧光材料层21之间也可设置电子阻挡层（未图示）。
图4显示图3的有机电致发光器件中发光层的发光区域产生对位不良之情况的示意图。在发光层22的发光区域发生对位不良而产生混色区域时，混色区域中的空穴因无法通过空穴阻挡区域而无法有效发光，有效抑制混色的情形发生。举例来说，如图4所示，绿色发光区域在制作时因对位不良而叠置在蓝色发光区域，此时蓝色发光区域在下而绿色发光区域在上，两者有一部分形成重叠。更具体地，由下而上分别是蓝色发光区域、对应蓝色发光区域的空穴阻挡区域、绿色发光区域及对应绿色发光区域的空穴阻挡区域。蓝色发光区域中的混色区域R1（见图4虚线部分所示）因空穴没有被空穴阻挡区域阻挡，故可正常发出蓝光。绿色发光区域中的混色区域R2（见图4虚线部分所示）因空穴经由绿色发光区域传输到对应绿色发光区域的空穴阻挡区域时，被对应绿色发光区域的空穴阻挡区域所阻挡，因此无法进入绿色发光区域中的混色区域R2，因此蓝色发光区域不会与绿色发光区域产生混色发光，有效抑制了发光混色的情形。
本申请的有机电致发光器件中，空穴阻挡层23包括设置于不同位置上的第一空穴阻挡区域231、第二空穴阻挡区域232及第三空穴阻挡区域233，第一空穴阻挡区域231设置于对应发光层22的第一发光区域221的位置上，第二空穴阻挡区域232设置于对应发光层22的第二发光区域222的位置上，第三空穴阻挡区域233设置于对应发光层22的第三发光区域223的位置上。因此，当发光层22的发光区域因对位不良而相互重叠时，因重叠的发光区域之间存在有空穴阻挡区域，因此可以有效阻挡空穴通过，阻止重叠区域中上方的发光区域发光，避免其与重叠区中下方的发光区域混色而导致混色发光的情形，有效解决现有技术存在的有机电致发光器件严重混色的问题，提升产品良率。
图5显示根据本申请的有机电致发光器件（Organic Electroluminescence, EL）的制造方法的流程图。请一并参阅图3及图5，本申请的有机电致发光器件的制造方法包括如下步骤：
步骤S10中，设置空穴传输功能层20。空穴传输功能层20用于空穴的注入和传输，其可以是空穴传输层（hole transmission layer, HTL）或空穴注入层（hole injection layer, HIL），或同时包含了空穴传输层及空穴注入层。在图3显示的例子中，空穴传输功能层20包括空穴传输层或空穴注入层，但也可以设置空穴注入层，而后在空穴注入层上设置空穴传输层。可选地，所述方法包括在空穴传输功能层20上设置电子阻挡层（未图示）的步骤，电子阻挡层用以阻挡电子通过。
步骤S12中，在空穴传输功能层20上设置荧光材料层21。
步骤S14中，在荧光材料层21上设置发光层22。
荧光材料层21设置于空穴传输功能层20上，发光层22设置于荧光材料层21上。也就是，荧光材料层21设置于空穴传输功能层20和发光层22之间。发光层22为有机物半导体，其具有特殊的能带结构，发光层22在阳极（anode）和阴极（cathode）之间的电场驱动下，电子与电洞在发光层22复合而散发出一定波长的光子。荧光材料层21用于辅助发光层22发光。
如图3所示，荧光材料层21包括对应三种不同颜色的第一荧光材料区域211、第二荧光材料区域212及第三荧光材料区域213。举例来说，第一荧光材料区域211、第二荧光材料区域212及第三荧光材料区域213分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。发光层22包括发出三种不同颜色的光的第一发光区域221、第二发光区域222及第三发光区域223。举例来说，发蓝光的有机材料设置于第一发光区域221、发绿光的有机材料设置于第二发光区域222、发红光的有机材料设置于第三发光区域223。第一荧光材料区域211设置于对应第一发光区域221的位置上，第二荧光材料区域212设置于对应第二发光区域222的位置上，第三荧光材料区域213设置于对应第三发光区域223的位置上。举例来说，第一荧光材料区域211对应第一发光区域221，第二荧光材料区域212对应第二发光区域222，第三荧光材料区域213对应第三发光区域223。
步骤S16中，在发光层22上设置空穴阻挡层（hole blocking layer, HBL）23。空穴阻挡层23用于阻挡来自阳极层的空穴通过。空穴阻挡层23与发光层22间传输电子的能障远低于传输空穴的能障，因此电子可通过空穴阻挡层23进入发光层22，而空穴很难通过空穴阻挡层23，因此空穴阻挡层23有明显的空穴阻挡作用。如图3所示，空穴阻挡层23包括设置于不同位置上的第一空穴阻挡区域231、第二空穴阻挡区域232及第三空穴阻挡区域233，第一空穴阻挡区域231设置于对应第一发光区域221的位置上，第二空穴阻挡区域232设置于对应第二发光区域222的位置上，第三空穴阻挡区域233设置于对应第三发光区域223的位置上。
步骤S18中，在空穴阻挡层23上设置电子传输功能层。电子传输功能层用于电子的注入和传输，其可以是电子传输层（electron transmission layer, ETL）24或电子注入层（electron injection layer, EIL）25，或同时包含了电子传输层24及电子注入层25。在图3显示的例子中，电子传输功能层包括电子传输层24及电子注入层25，但也可仅设置电子传输层24，或仅设置电子注入层25。
在设置发光层22的步骤S14及在设置空穴阻挡层23的步骤S16中，依照第一发光区域221、第一空穴阻挡区域231、第二发光区域222、第二空穴阻挡区域232、第三发光区域223及第三空穴阻挡区域233的顺序进行设置。
具体来说，第一发光区域221及第一空穴阻挡区域231采用同一掩模板于同一蒸镀制程下制作，例如蓝色发光区域及对应蓝色发光区域的空穴阻挡区域是使用同一片掩模板制成且以蒸镀方式在同一制程下制成；第二发光区域222及第二空穴阻挡区域232采用同一掩模板于同一蒸镀制程下制作，例如绿色发光区域及对应绿色发光区域的空穴阻挡区域是使用同一片掩模板制成且以蒸镀方式在同一制程下制成；第三发光区域223及第三空穴阻挡区域233采用同一掩模板于同一蒸镀制程下制作，例如红色发光区域及对应红色发光区域的空穴阻挡区域是使用同一片掩模板制成且以蒸镀方式在同一制程下制成。
也就是，设置发光层22的步骤S14及在设置空穴阻挡层23的步骤S16包括：
采用同一掩模板于同一蒸镀制程下制作第一发光区域221及第一空穴阻挡区域231；
采用同一掩模板于同一蒸镀制程下制作第二发光区域222及第二空穴阻挡区域232；以及
采用同一掩模板于同一蒸镀制程下制作第三发光区域232及第三空穴阻挡区域233。
如图1所示的现有的有机电致发光显示器件中，发光层中的蓝色发光区域、绿色发光区域及红色发光区域是采用薄膜金属掩模板（film metal mask, FMM）以蒸镀方式制作，空穴注入层、空穴传输层、空穴阻挡层、电子传输层及电子注入层是采用共同金属掩模板（common metal mask）以蒸镀方式制作。现有的有机电致发光显示器件中，发光层和空穴阻挡层的制作顺序是：第一发光区域、第二发光区域、第三发光区域及空穴阻挡层。
本申请中，空穴注入层、空穴传输层、电子传输层及电子注入层采用共同金属掩模板以蒸镀方式制作。但是，在发光层和空穴阻挡层的制作过程中，第一发光区域221和与之对应的第一空穴阻挡区域231是采用同一片薄膜金属掩模板于同一蒸镀制程下制作；第二发光区域222和与之对应的第二空穴阻挡区域232是采用同一片薄膜金属掩模板于同一蒸镀制程下制作；第三发光区域223和与之对应的第三空穴阻挡区域233是采用同一片薄膜金属掩模板于同一蒸镀制程下制作。因此，制作发光区域和空穴阻挡区域时无须频繁切换使用掩模板，且无须频繁变换蒸镀制程。与现有的有机电致发光显示器件的制作方法相较，本申请最多使用三片薄膜金属掩模板即能制得发光层22的发光区域和空穴阻挡层23的空穴阻挡区域，现有技术则需要三片薄膜金属掩模板及一片共同金属掩模板。再者，本申请最多使用三道蒸镀制程即能制得发光层22的发光区域和空穴阻挡层23的空穴阻挡区域，现有技术则需要四道蒸镀制程。因此，有效降低制程复杂度是本申请的一个技术特点。
本申请中，空穴注入层、空穴传输层、荧光材料层21、发光层22、空穴阻挡层23、电子传输层24及电子注入层25可采用现有的材料以与现有制程相同或类似的制程制成，在此不再赘述。
请参阅图4，在发光层22的发光区域发生对位不良而产生混色区域时，混色区域中的空穴因无法通过空穴阻挡区域而无法有效发光，有效抑制混色的情形发生。举例来说，如图4所示，绿色发光区域在制作时因对位不良而叠置在蓝色发光区域，此时蓝色发光区域在下而绿色发光区域在上，两者有一部分形成重叠。更具体地，由下而上分别是蓝色发光区域、对应蓝色发光区域的空穴阻挡区域、绿色发光区域及对应绿色发光区域的空穴阻挡区域。蓝色发光区域中的混色区域R1（见图4虚线部分所示）因空穴没有被空穴阻挡区域阻挡，故可正常发出蓝光。绿色发光区域中的混色区域R2（见图4虚线部分所示）因空穴经由绿色发光区域传输到对应绿色发光区域的空穴阻挡区域时，被对应绿色发光区域的空穴阻挡区域所阻挡，因此无法进入绿色发光区域中的混色区域R2，因此蓝色发光区域不会与绿色发光区域产生混色发光，有效抑制了发光混色的情形。
本申请的有机电致发光器件的制造方法的其他技术细节可参阅上文对有机电致发光器件的说明，在此不再赘述。
本申请的有机电致发光器件的制造方法中，空穴阻挡层23包括设置于不同位置上的第一空穴阻挡区域231、第二空穴阻挡区域232及第三空穴阻挡区域233，第一空穴阻挡区域231设置于对应发光层22的第一发光区域221的位置上，第二空穴阻挡区域232设置于对应发光层22的第二发光区域222的位置上，第三空穴阻挡区域233设置于对应发光层22的第三发光区域223的位置上。因此，当发光层22的发光区域因对位不良而相互重叠时，因重叠的发光区域之间存在有空穴阻挡区域，因此可以有效阻挡空穴通过，阻止重叠区域中上方的发光区域发光，避免其与重叠区中下方的发光区域混色而导致混色发光的情形，有效解决现有技术存在的有机电致发光器件严重混色的问题，提升产品良率。
本申请并提供一种显示装置，所述显示装置包括多个有机电致发光显示器件，每个有机电致发光显示器件的结构及制造方法可参照上文的描述，在此不再赘述。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种有机电致发光显示器件，包括：
    空穴传输功能层；
    发光层，设置于所述空穴传输功能层上，所述发光层包括对应发出三种不同颜色的第一发光区域、第二发光区域及第三发光区域；
    空穴阻挡层，设置于所述发光层上，所述空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，所述第一空穴阻挡区域设置于对应所述第一发光区域的位置上，所述第二空穴阻挡区域设置于对应所述第二发光区域的位置上，所述第三空穴阻挡区域设置于对应所述第三发光区域的位置上；以及
    电子传输功能层，设置于所述空穴阻挡层上。
  2. 根据权利要求1所述的有机电致发光显示器件，还包括：
    荧光材料层，设置于所述空穴传输功能层和所述发光层之间，所述荧光材料层包括对应三种不同颜色的第一荧光材料区域、第二荧光材料区域及第三荧光材料区域，所述第一荧光材料区域设置于对应所述第一发光区域的位置上，所述第二荧光材料区域设置于对应所述第二发光区域的位置上，所述第三荧光材料区域设置于对应所述第三发光区域的位置上。
  3. 根据权利要求2所述的有机电致发光显示器件，其中所述第一发光区域、所述第二发光区域及所述第三发光区域分别为蓝光区域、绿光区域及红光区域，所述第一荧光材料区域、所述第二荧光材料区域及所述第三荧光材料区域分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。
  4. 根据权利要求1所述的有机电致发光显示器件，其中所述空穴传输功能层包括空穴传输层和空穴注入层之至少一者。
  5. 根据权利要求1所述的有机电致发光显示器件，其中所述电子传输功能层包括电子传输层和电子注入层之至少一者。
  6. 一种有机电致发光显示器件的制造方法，包括：
    设置空穴传输功能层；
    在所述空穴传输功能层上设置发光层，所述发光层包括对应发出三种不同颜色的第一发光区域、第二发光区域及第三发光区域；
    在所述发光层上设置空穴阻挡层，所述空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，所述第一空穴阻挡区域设置于对应所述第一发光区域的位置上，所述第二空穴阻挡区域设置于对应所述第二发光区域的位置上，所述第三空穴阻挡区域设置于对应所述第三发光区域的位置上；以及
    在所述空穴阻挡层上设置电子传输功能层。
  7. 根据权利要求6所述的有机电致发光显示器件的制造方法，其中在设置所述发光层的步骤及在设置所述空穴阻挡层的步骤中，依照所述第一发光区域、所述第一空穴阻挡区域、所述第二发光区域、所述第二空穴阻挡区域、所述第三发光区域及所述第三空穴阻挡区域的顺序进行设置。
  8. 根据权利要求6所述的有机电致发光显示器件的制造方法，其中设置所述发光层的步骤及在设置所述空穴阻挡层的步骤包括：
    采用同一掩模板于同一蒸镀制程下制作所述第一发光区域及所述第一空穴阻挡区域；
    采用同一掩模板于同一蒸镀制程下制作所述第二发光区域及所述第二空穴阻挡区域；以及
    采用同一掩模板于同一蒸镀制程下制作所述第三发光区域及所述第三空穴阻挡区域。
  9. 根据权利要求8所述的有机电致发光显示器件的制造方法，其中所述第一发光区域、所述第二发光区域、所述第三发光区域、所述第一空穴阻挡区域、所述第二空穴阻挡区域及所述第三空穴阻挡区域是采用薄膜金属掩模板制作。
  10. 根据权利要求6所述的有机电致发光显示器件的制造方法，还包括：
    在所述空穴传输功能层和所述发光层之间设置荧光材料层，所述荧光材料层包括对应三种不同颜色的第一荧光材料区域、第二荧光材料区域及第三荧光材料区域，所述第一荧光材料区域设置于对应所述第一发光区域的位置上，所述第二荧光材料区域设置于对应所述第二发光区域的位置上，所述第三荧光材料区域设置于对应所述第三发光区域的位置上。
  11. 根据权利要求10所述的有机电致发光显示器件的制造方法，其中所述第一发光区域、所述第二发光区域及所述第三发光区域分别为蓝光区域、绿光区域及红光区域，所述第一荧光材料区域、所述第二荧光材料区域及所述第三荧光材料区域分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。
  12. 根据权利要求6所述的有机电致发光显示器件的制造方法，其中所述空穴传输功能层包括空穴传输层和空穴注入层之至少一者。
  13. 根据权利要求6所述的有机电致发光显示器件的制造方法，其中所述电子传输功能层包括电子传输层和电子注入层之至少一者。
  14. 一种显示装置，所述显示装置包括多个有机电致发光显示器件，每个有机电致发光显示器件包括：
    空穴传输功能层；
    发光层，设置于所述空穴传输功能层上，所述发光层包括对应发出三种不同颜色的第一发光区域、第二发光区域及第三发光区域；
    空穴阻挡层，设置于所述发光层上，所述空穴阻挡层包括设置于不同位置上的第一空穴阻挡区域、第二空穴阻挡区域及第三空穴阻挡区域，所述第一空穴阻挡区域设置于对应所述第一发光区域的位置上，所述第二空穴阻挡区域设置于对应所述第二发光区域的位置上，所述第三空穴阻挡区域设置于对应所述第三发光区域的位置上；以及
    电子传输功能层，设置于所述空穴阻挡层上。
  15. 根据权利要求14所述的有机电致发光显示器件，还包括：
    荧光材料层，设置于所述空穴传输功能层和所述发光层之间，所述荧光材料层包括对应三种不同颜色的第一荧光材料区域、第二荧光材料区域及第三荧光材料区域，所述第一荧光材料区域设置于对应所述第一发光区域的位置上，所述第二荧光材料区域设置于对应所述第二发光区域的位置上，所述第三荧光材料区域设置于对应所述第三发光区域的位置上。
  16. 根据权利要求15所述的有机电致发光显示器件，其中所述第一发光区域、所述第二发光区域及所述第三发光区域分别为蓝光区域、绿光区域及红光区域，所述第一荧光材料区域、所述第二荧光材料区域及所述第三荧光材料区域分别为蓝色荧光材料区域、绿色荧光材料区域及红色荧光材料区域。
  17. 根据权利要求14所述的有机电致发光显示器件，其中所述空穴传输功能层包括空穴传输层和空穴注入层之至少一者。
  18. 根据权利要求14所述的有机电致发光显示器件，其中所述电子传输功能层包括电子传输层和电子注入层之至少一者。
PCT/CN2019/078599 2018-12-05 2019-03-19 显示装置、有机电致发光显示器件及其制造方法 Ceased WO2020113852A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/349,281 US11121349B2 (en) 2018-12-05 2019-03-19 Method for manufacturing an organic electroluminescence display device having separate hole blocking layers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811476819.X 2018-12-05
CN201811476819.XA CN109671854B (zh) 2018-12-05 2018-12-05 显示装置、有机电致发光显示器件及其制造方法

Publications (1)

Publication Number Publication Date
WO2020113852A1 true WO2020113852A1 (zh) 2020-06-11

Family

ID=66143577

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/078599 Ceased WO2020113852A1 (zh) 2018-12-05 2019-03-19 显示装置、有机电致发光显示器件及其制造方法

Country Status (3)

Country Link
US (1) US11121349B2 (zh)
CN (1) CN109671854B (zh)
WO (1) WO2020113852A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113571654A (zh) * 2021-07-23 2021-10-29 福建华佳彩有限公司 一种oled器件及制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1945846A (zh) * 2006-09-15 2007-04-11 信利半导体有限公司 一种有机发光二极管及其制作方法
CN104600094A (zh) * 2014-12-31 2015-05-06 北京维信诺科技有限公司 一种具有四色亚像素的有机电致发光装置
CN106654033A (zh) * 2016-12-29 2017-05-10 上海天马有机发光显示技术有限公司 一种有机发光显示面板以及电子设备
CN106684113A (zh) * 2016-12-27 2017-05-17 上海天马有机发光显示技术有限公司 一种有机发光显示面板、装置及其制作方法
WO2017191786A1 (ja) * 2016-05-02 2017-11-09 シャープ株式会社 表示装置およびその製造方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4273191B2 (ja) * 2001-03-01 2009-06-03 三星モバイルディスプレイ株式會社 有機発光デバイス
KR100439648B1 (ko) 2001-08-29 2004-07-12 엘지.필립스 엘시디 주식회사 유기전계발광소자
CN102184938B (zh) * 2011-05-03 2015-06-24 昆山维信诺显示技术有限公司 有机电致发光器件及其制备方法
CN103887435A (zh) 2012-12-21 2014-06-25 厦门天马微电子有限公司 一种有机发光二极管
KR102129266B1 (ko) * 2014-04-30 2020-07-03 삼성디스플레이 주식회사 유기 발광 표시 장치
US9824820B2 (en) * 2014-06-30 2017-11-21 James Gerard Grote Layered capacitor device with charge blocking layers
KR101686715B1 (ko) * 2014-12-24 2016-12-14 엘지전자 주식회사 디스플레이 장치
CN104617130A (zh) * 2015-02-06 2015-05-13 京东方科技集团股份有限公司 一种oled像素单元、oled显示面板及显示装置
CN105185919B (zh) * 2015-09-02 2019-01-18 Tcl集团股份有限公司 混合型qled及其制备方法
CN107170897B (zh) * 2016-03-08 2019-04-30 上海和辉光电有限公司 一种有机发光二极管器件及有机发光显示器
CN107785491B (zh) * 2016-08-26 2019-12-03 昆山工研院新型平板显示技术中心有限公司 有机电致发光器件
CN106449714B (zh) 2016-11-09 2019-12-17 上海天马有机发光显示技术有限公司 一种有机发光显示面板以及制作方法
US10879500B2 (en) 2017-06-28 2020-12-29 Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. Organic electroluminescent device and fabrication method thereof
CN107359279B (zh) * 2017-06-28 2019-02-05 武汉华星光电半导体显示技术有限公司 一种有机电致发光器件及其制备方法
CN107507839B (zh) * 2017-08-25 2020-09-15 惠科股份有限公司 一种阵列基板及其制造方法
CN108447894A (zh) * 2018-05-16 2018-08-24 云谷（固安）科技有限公司 有机发光显示装置及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1945846A (zh) * 2006-09-15 2007-04-11 信利半导体有限公司 一种有机发光二极管及其制作方法
CN104600094A (zh) * 2014-12-31 2015-05-06 北京维信诺科技有限公司 一种具有四色亚像素的有机电致发光装置
WO2017191786A1 (ja) * 2016-05-02 2017-11-09 シャープ株式会社 表示装置およびその製造方法
CN106684113A (zh) * 2016-12-27 2017-05-17 上海天马有机发光显示技术有限公司 一种有机发光显示面板、装置及其制作方法
CN106654033A (zh) * 2016-12-29 2017-05-10 上海天马有机发光显示技术有限公司 一种有机发光显示面板以及电子设备

Also Published As

Publication number Publication date
CN109671854A (zh) 2019-04-23
US11121349B2 (en) 2021-09-14
US20210184154A1 (en) 2021-06-17
CN109671854B (zh) 2020-09-08

Similar Documents

Publication Publication Date Title
US10205129B2 (en) Organic light emitting display panel comprising a quantum material layer, manufacturing method thereof, and display device
CN107293572B (zh) Oled显示面板及其制备方法
US9660000B2 (en) Organic light emitting diode (OLED) array substrate and fabricating method thereof, display device
CN104966787A (zh) 发光二极管、显示基板及其制造方法和显示装置
WO2020258395A1 (zh) 一种有机电致发光器件及显示面板
WO2019214125A1 (zh) 彩色滤光基板及其制作方法与woled显示器
WO2018120362A1 (zh) Oled基板及其制作方法
JP2007103362A (ja) 色飽和度を高めるフルカラーの有機ｅｌ表示装置及びその製造方法
WO2019085108A1 (zh) Oled显示器及其制作方法
KR20130046303A (ko) 유기전계 발광 표시장치용 쉐도우 마스크 및 그 제조방법
WO2019184387A1 (zh) 有机发光显示面板及其制作方法、显示装置
CN104681736A (zh) 一种oled单元及其制造方法、显示面板
WO2019192421A1 (zh) Oled基板及其制备方法、显示装置
US10236468B2 (en) Hybrid light emitting device, display panel and display device
US7710024B2 (en) Organic light emitting display device and method of fabricating the same
JP2007035631A (ja) カラーフィルタ変換装置及びそれを応用した有機電界発光表示装置
CN105355644B (zh) 一种像素单元及其制作方法、显示装置
CN107611276A (zh) 有机发光二极管和显示面板
WO2019109438A1 (zh) 一种叠层oled器件及其制作方法
WO2020113852A1 (zh) 显示装置、有机电致发光显示器件及其制造方法
KR102057470B1 (ko) 유기 발광 디스플레이 장치 및 그의 제조방법
CN117440704B (zh) 有机电致发光器件及其制备方法、显示面板及显示装置
CN109742105B (zh) Oled基板及其制备方法、oled显示装置
JP2007123278A (ja) 並列式フルカラーの有機ｅｌ表示装置及びその製造方法
WO2021082048A1 (zh) Oled器件及其制备方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19893863

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19893863

Country of ref document: EP

Kind code of ref document: A1