WO2019041990A1 - 有机电致发光显示面板及其制备方法 - Google Patents

有机电致发光显示面板及其制备方法 Download PDF

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Publication number
WO2019041990A1
WO2019041990A1 PCT/CN2018/092752 CN2018092752W WO2019041990A1 WO 2019041990 A1 WO2019041990 A1 WO 2019041990A1 CN 2018092752 W CN2018092752 W CN 2018092752W WO 2019041990 A1 WO2019041990 A1 WO 2019041990A1
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WIPO (PCT)
Prior art keywords
organic electroluminescent
substrate
unit
electroluminescent unit
display panel
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PCT/CN2018/092752
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English (en)
French (fr)
Inventor
李宗祥
陈曦
姚丽清
廖加敏
李大海
Original Assignee
京东方科技集团股份有限公司
福州京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 福州京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/336,938 priority Critical patent/US10978515B2/en
Publication of WO2019041990A1 publication Critical patent/WO2019041990A1/zh

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    • 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
    • H10K59/90—Assemblies of multiple devices comprising at least one organic light-emitting element
    • 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
    • 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]
    • G09G3/3275—Details of drivers for data electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • 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
    • H10K59/128—Active-matrix OLED [AMOLED] displays comprising two independent displays, e.g. for emitting information from two major sides of the display
    • 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
    • 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
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/878—Arrangements for extracting light from the devices comprising reflective means

Definitions

  • the present disclosure relates to the field of display technology, and in particular to an organic electroluminescence display panel and a method of fabricating the same.
  • Organic electroluminescence (Electroluminescence) display panels are favored by more and more consumers due to their self-luminous, fast response, wide viewing angle, high flexibility and light weight.
  • the structure of the organic electroluminescent display panel generally includes an array substrate 01 and a package cover (also referred to as an encapsulation film layer) 02 , wherein the package cover 02 is used for packaging, and the array substrate 01 Used for display.
  • the array substrate 01 includes an anode 20, a cathode 30, and a functional layer 40 formed between the anode 20 and the cathode 30, which are disposed on the base substrate 10.
  • the functional layer 40 emits light.
  • the intensity of the light of the functional layer 40 is mainly related to the magnitude of the current and the nature of the functional layer 40 itself, wherein the greater the current, the greater the luminous intensity of the functional layer 40.
  • the luminous intensity of the functional layer 40 will remain unchanged. Therefore, this makes the maximum value of the luminous intensity of the functional layer 40 somewhat restricted.
  • the organic electroluminescent display panel is liable to cause great limitations in application due to insufficient brightness of the self-illuminating structure.
  • an embodiment provides an organic electroluminescence display panel.
  • the organic electroluminescent display panel includes: a first substrate and a second substrate that are oppositely disposed; and is disposed on a side of the first substrate facing the second substrate a plurality of first organic electroluminescent units; and a plurality of second organic electroluminescent units disposed on a side of the second substrate that faces the first substrate.
  • An orthographic projection of each of the first organic electroluminescent units on the second substrate substrate at least partially overlaps with a corresponding second organic electroluminescent unit.
  • the second organic electricity at least partially overlapping the orthographic projection of the first organic electroluminescent unit on the second substrate
  • the electroluminescent unit is configured to emit light of the same color as the one first organic electroluminescent unit.
  • the first organic electroluminescent unit is disposed closer to the organic electroluminescence than the second organic electroluminescent unit The light exit surface of the display panel.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure, at least one of the first organic electroluminescence unit and the second organic electroluminescence unit is configured to emit white light. Furthermore, the organic electroluminescent display panel further includes: a color film layer disposed on a side of the first organic electroluminescent unit remote from the second organic electroluminescent unit.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes: a reflective layer disposed on a side of the second organic electroluminescent unit away from the first organic electroluminescent unit.
  • each of the second organic electroluminescent units includes a first electrode, a functional layer, and a functional layer stacked on the second substrate. a second electrode, wherein the first electrode is made of a reflective material.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes: a first flat disposed on a side of the first organic electroluminescent unit adjacent to the second organic electroluminescent unit a second flat layer disposed on a side of the second organic electroluminescent unit adjacent to the first organic electroluminescent unit; and disposed on the first flat layer and the second flat layer A spacer between the two.
  • the organic electroluminescent display panel provided by the embodiments of the present disclosure further includes a driving module.
  • the driving module is connected to the first organic electroluminescent unit and the second organic electroluminescent unit, and configured to drive the first organic electroluminescent unit and the second organic electric
  • the illumination unit emits light.
  • the driving module is configured to simultaneously drive the first organic electroluminescent unit and the second organic electroluminescent unit to emit light .
  • the driving module includes a first sub driving module and a second sub driving module.
  • the first sub-driving module is connected to the first organic electroluminescent unit and configured to drive the first organic electroluminescent unit to emit light.
  • the second sub-drive module is connected to the second organic electroluminescent unit and configured to drive the second organic electroluminescent unit to emit light.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes: a first signal line disposed on the first substrate; and a second surface disposed on the second substrate Two signal lines. Further, the first sub-driving module is disposed on the first substrate and is connected to the first signal line. Furthermore, the second sub-driving module is disposed on the second substrate and is connected to the second signal line.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes: a first signal line disposed on the first substrate; and a second surface disposed on the second substrate And a third signal line, wherein the first signal line is electrically connected to the third signal line through an anisotropic conductive film.
  • the first sub-driving module and the second sub-driving module are located on the second substrate, the first sub-driving module is connected to the third signal line, and the second sub- The driving module is connected to the second signal line.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes: a first data signal line and a first driving signal line disposed on the first substrate; and a second data signal line, a third data signal line, and a second driving signal line on the two substrate substrates, wherein the first data signal line is electrically connected to the third data signal line through an anisotropic conductive film, And the first driving signal line is electrically connected to the second driving signal line through an anisotropic conductive film.
  • the driving module includes a first sub-driving module, a second sub-driving module, and an array substrate row driving unit on the second substrate, wherein the first sub-driving module and the third data signal
  • the second sub-driving module is electrically connected to the second data signal line
  • the array substrate row driving unit is electrically connected to the second driving signal line.
  • an embodiment further provides a method of fabricating an organic electroluminescence display panel.
  • the preparation method includes: forming a plurality of first organic electroluminescent units on a first substrate; forming a plurality of second organic electroluminescent units on the second substrate; and a substrate substrate and the second substrate substrate pair such that an orthographic projection of each of the first organic electroluminescent units on the second substrate substrate and a corresponding second organic electroluminescent unit are at least partially overlapping.
  • an embodiment further provides an organic electroluminescence display panel.
  • the organic electroluminescent display panel includes: a substrate substrate; a plurality of first organic electroluminescent units disposed on the substrate substrate at intervals from each other; and are disposed at intervals in the plurality of first The organic electroluminescent unit is remote from the plurality of second organic electroluminescent units on one side of the substrate.
  • An orthographic projection of each of the first organic electroluminescent units on the substrate substrate at least partially overlaps with an orthographic projection of a corresponding second organic electroluminescent unit on the substrate.
  • the second organic electricity at least partially overlapping the orthographic projection of a first organic electroluminescent unit on the second substrate
  • the electroluminescent unit is configured to emit light of the same color as the one first organic electroluminescent unit.
  • the first organic electroluminescent unit is disposed closer to the organic electroluminescence than the second organic electroluminescent unit The light exit surface of the display panel.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure, at least one of the first organic electroluminescent unit and the second organic electroluminescent unit is configured to emit white light. Furthermore, the organic electroluminescent display panel further includes: a color film layer disposed on a side of the first organic electroluminescent unit remote from the second organic electroluminescent unit.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes: a first portion disposed on a side of the first organic electroluminescent unit adjacent to the second organic electroluminescent unit a flat layer; a second planar layer disposed on a side of the second organic electroluminescent unit adjacent to the first organic electroluminescent unit; and disposed on the first planar layer and the second planar layer Between the spacers.
  • the organic electroluminescent display panel provided by the embodiment of the present disclosure further includes a driving module.
  • the driving module is connected to the first organic electroluminescent unit and the second organic electroluminescent unit, and configured to drive the first organic electroluminescent unit and the second organic electric
  • the illumination unit emits light.
  • FIG. 1 is a schematic structural view of an organic electroluminescence display panel according to the prior art
  • FIG. 2 is a schematic structural view of an organic electroluminescence display panel according to an embodiment of the present disclosure
  • 3(a) is a block diagram showing the structure of an organic electroluminescent display panel including a color film layer according to an embodiment of the present disclosure
  • 3(b) is a block diagram showing the structure of an organic electroluminescent display panel including a color film layer according to another embodiment of the present disclosure
  • FIG. 4(a) is a block diagram showing the structure of an organic electroluminescent display panel including a light reflecting layer according to an embodiment of the present disclosure
  • 4(b) is a schematic view showing the structure of an organic electroluminescence display panel including a light-reflecting layer according to another embodiment of the present disclosure
  • FIG. 5 illustrates a schematic structural view of an organic electroluminescence display panel including a flat layer and a spacer according to an embodiment of the present disclosure
  • FIG. 6 illustrates a structural schematic view of a signal line on a first base substrate and a signal line on a second base substrate electrically connected by an anisotropic conductive film, according to an embodiment of the present disclosure
  • FIG. 7 illustrates a schematic structural view of a first sub-driving module disposed on a first substrate and a second sub-driving module disposed on a second substrate, in accordance with an embodiment of the present disclosure
  • FIG. 8 illustrates a schematic structural view of a first sub-driver module and a second sub-driver module disposed on a second base substrate according to an embodiment of the present disclosure
  • FIG. 9 illustrates a structural schematic view of a signal line transferred onto a first substrate on a second substrate in accordance with an embodiment of the present disclosure
  • FIG. 10 illustrates a schematic structural diagram of electrically connected first driving signal lines and second driving signal lines according to an embodiment of the present disclosure
  • FIG. 11 is a flow chart showing a method of fabricating an organic electroluminescence display panel according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide an organic electroluminescence display panel.
  • the organic electroluminescent display panel includes a first substrate substrate 50 and a second substrate substrate 60 which are disposed opposite each other.
  • a plurality of first organic electroluminescent units 70 are disposed on the first substrate substrate 50 (eg, on an upper surface thereof), and a plurality of first organic electroluminescent units 70 are disposed on the second substrate substrate 60 (eg, on a lower surface thereof)
  • the second organic electroluminescent unit 80 The orthographic projection of each of the first organic electroluminescent units 70 on the second substrate 50 at least partially overlaps with a corresponding second organic electroluminescent unit 80.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are disposed one-to-one.
  • the expression “at least partially overlapping” as used herein encompasses not only partial overlap but also complete overlap.
  • the orthographic projection of the first organic electroluminescent unit 70 on the second substrate 50 can be only partially overlapped with a corresponding second organic electroluminescent unit 80, or it can be completely overlapped.
  • the ratio of overlap between the two may be, for example, 100% (ie, fully overlapping), 95% (ie, partially overlapping), and the like. Those skilled in the art will readily recognize that all such overlaps are within the scope of the present disclosure.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may include an anode, a cathode, and a functional layer disposed between the anode and the cathode.
  • the functional layer may further include at least one of a hole transport layer, a hole injection layer, an electron transport layer, and an electron injection layer in addition to the light emitting layer.
  • the cathodes of the respective organic electroluminescence units may be connected to each other, that is, the cathode is an entire layer.
  • the cathodes of the individual organic electroluminescent units may also be independent of one another.
  • first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are disposed one-to-one, the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 do not affect each other. Normal light emission. For example, light emitted from the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may both be emitted from the second substrate substrate 60. In this case, the light emitted by the first organic electroluminescent unit 70 can be transmitted through the second organic electroluminescent unit 80. This means that the second organic electroluminescent unit 80 is made of a transparent material.
  • the color of light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be flexibly selected according to actual needs.
  • the colors of the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may be the same.
  • the colors of the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may also be different.
  • any one of the three primary colors of light can be emitted from the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80.
  • white light, or light of other colors than the three primary colors may also be emitted from the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80.
  • the brightness of the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 that are disposed correspondingly may be the same or different.
  • the expression "the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are arranged one-to-one” means that along the thickness direction of the organic electroluminescent display panel, a plurality of first The organic electroluminescent unit 70 and the plurality of second organic electroluminescent units 80 are disposed in one-to-one correspondence, and for example, each of the sub-pixel regions includes a first organic electroluminescent unit 70 and a second organic electroluminescence correspondingly disposed. Unit 80.
  • Embodiments of the present disclosure provide an organic electroluminescence display panel.
  • the organic electroluminescent display panel includes a plurality of first organic electroluminescent units 70 disposed on the first substrate substrate 50 and a plurality of second organic electroluminescent units 80 disposed on the second substrate substrate 60, wherein Both the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can emit light.
  • the organic electroluminescence display panel provided by the embodiment of the present disclosure increases the display brightness of the organic electroluminescence display panel, so that the maximum value of the luminance of the organic electroluminescence display panel is larger, thereby facilitating the large-size display panel.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are respectively disposed on two base substrates. On the one hand, this avoids the mutual influence of the electrodes in the first organic electroluminescent unit 70 and the electrodes in the second organic electroluminescent unit 80, thereby affecting the display quality, and on the other hand, this also avoids the first organic electricity.
  • the electroluminescent unit 70 and the second organic electroluminescent unit 80 interact with each other at the time of fabrication, thereby simplifying the manufacturing process.
  • the number of gray levels of the organic electroluminescent display panel can also be increased.
  • the corresponding first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 emit light of the same color.
  • the corresponding first organic electroluminescent unit 70 and second organic electroluminescent unit 80 may both emit white light.
  • the corresponding first organic electroluminescent unit 70 and second organic electroluminescent unit 80 may also emit one of the three primary colors of light.
  • the color of the light emitted from each sub-pixel unit is the same, and thus is easy Controls the color of light emitted from a pixel unit.
  • the first organic electroluminescent unit 70 is disposed closer to the light exiting side of the entire organic electroluminescent display panel than the second organic electroluminescent unit 80, that is, the display side.
  • the first organic electroluminescent unit 70 includes a first electrode 21, a second electrode 31, and a functional layer 41 disposed between the first electrode 21 and the second electrode 31, wherein the first electrode 21 and The second electrode 31 is light transmissive.
  • first electrode 21 and the second electrode 31 of the first organic electroluminescent unit 70 are light transmissive, when the first organic electroluminescent unit 70 is higher than the second organic electroluminescent unit 80 Light emitted by the second organic electroluminescent unit 80 can pass through the first organic electroluminescent unit 70 when it is near the display side.
  • the first organic electroluminescent unit 70 and/or the second organic electroluminescent unit 80 emit white light (ie, disposed on the first lining)
  • the organic electroluminescent display The panel may further include a color film layer 90 disposed on a side of the first organic electroluminescent unit 70 remote from the second organic electroluminescent unit 80.
  • the color film layer 90 may include a plurality of color resist units 901.
  • the color resist unit 901 may include a red color resist unit (R), a green color resist unit (G), or a blue color resist unit (B).
  • R red color resist unit
  • G green color resist unit
  • B blue color resist unit
  • each color resist unit 901 should be disposed corresponding to a first organic electroluminescent unit 70 or a second organic electroluminescent unit 80.
  • a black matrix (BM) 902 may be disposed between the respective color resist units 901.
  • the color of the color resisting unit 901 should be The colors of the three primary colors are the same.
  • the color resisting unit corresponding to the red-emitting second organic electroluminescent unit 80 901 is a red color resistance unit.
  • the color film layer 90 can be flexibly disposed at any suitable position according to actual needs.
  • a color film layer 90 may be disposed between the first organic electroluminescent unit 70 and the first substrate substrate 50.
  • the color film layer 90 may also be disposed on a side of the first base substrate 50 away from the first organic electroluminescent unit 70.
  • a protective layer may also be disposed on a side of the color film layer 90 away from the first substrate 50.
  • a polarizer may be disposed on a side of the first base substrate 50 away from the first organic electroluminescent unit 70.
  • the organic electroluminescence display panel further includes a color film layer 90.
  • the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can become three primary colors of light after passing through the color filter layer 90.
  • the organic electroluminescence display panel can realize color display.
  • the organic electroluminescent display panel may further include a side disposed on the side of the second organic electroluminescent unit 80 away from the first organic electroluminescent unit 70. Reflective layer 100 on.
  • the light reflecting layer 100 can be formed using any suitable reflective material, such as a material having a higher reflectivity.
  • the light reflecting material may be at least one of silver (Ag), Al (aluminum), or a chromium alloy.
  • the reflective layer 100 may also be the same as the second organic electroluminescent unit 80.
  • One electrode is shared.
  • the first electrode is a reflective electrode. That is to say, the first electrode can function both to drive the function layer to emit light and to reflect light, thereby functioning as the light reflecting layer 100.
  • the light reflecting layer 100 can be disposed at any suitable position. As shown in FIG. 4(a), the light reflecting layer 100 may be disposed between the second organic electroluminescent unit 80 and the second substrate 60. Alternatively, as shown in FIG. 4(b), the light reflecting layer 100 may also be disposed on a side of the second base substrate 60 away from the second organic electroluminescent unit 80. When the light reflecting layer 100 is disposed on a side of the second base substrate 60 away from the second organic electroluminescent unit 80, a protective layer may also be disposed on a side of the light reflecting layer 100 away from the second substrate 60 to prevent Inadvertent destruction of the light reflecting layer 100 during the fabrication of the organic electroluminescent display panel.
  • the organic electroluminescence display panel further includes a light reflecting layer 100.
  • a light reflecting layer 100 When the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 is incident on the light reflecting layer 100, it is reflected by the light reflecting layer 100, thereby finally exiting from the display side. In this manner, the utilization of light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be improved.
  • the second organic electroluminescent unit 80 may include a first electrode 22 , a functional layer 42 , and a first layer disposed on the second substrate 60 in sequence.
  • the first electrode 22 can be an anode and the second electrode 32 can be a cathode.
  • the first electrode 22 can be a cathode and the second electrode 33 can be an anode.
  • the first electrode 22 may be formed using any suitable material as long as it has a higher reflectance.
  • the first electrode 22 may be formed using at least one of silver (Ag), Al (aluminum), or a chromium alloy.
  • the first electrode 22 of the second organic electroluminescent unit 80 is made of a reflective material. In this manner, light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be used by the first electrode when incident on the first electrode 22 of the second organic electroluminescent unit 80. 22 reflects and eventually exits from the display side. Thereby, the utilization ratio of light emitted from the first organic electroluminescence unit 70 and the second organic electroluminescence unit 80 is increased.
  • the organic electroluminescent display panel may further include: a first flat layer 701 disposed on a side of the first organic electroluminescent unit 70 adjacent to the second organic electroluminescent unit 80; a second flat layer 801 disposed on a side of the second organic electroluminescent unit 80 adjacent to the first organic electroluminescent unit 70; and a spacer disposed between the first flat layer 701 and the second flat layer 801 (Post Spacer, PS for short) 110.
  • a first flat layer 701 disposed on a side of the first organic electroluminescent unit 70 adjacent to the second organic electroluminescent unit 80
  • a second flat layer 801 disposed on a side of the second organic electroluminescent unit 80 adjacent to the first organic electroluminescent unit 70
  • a spacer disposed between the first flat layer 701 and the second flat layer 801 (Post Spacer, PS for short) 110.
  • the spacer 110 should be disposed in a region corresponding to the black matrix pattern 902 in order to avoid unfavorable blocking of light.
  • first planarization layer 701 and the second planarization layer 801 can be formed using any suitable material.
  • first planarization layer 701 and the second planarization layer 801 may be formed of at least one of silicon nitride (SiN x ), silicon oxide (SiO x ), or silicon oxynitride (SiO x N y ).
  • the first flat layer 701 is disposed on a side of the first organic electroluminescent unit 70 adjacent to the second organic electroluminescent unit 80, and the second organic electroluminescent unit 80 is adjacent to the first A second flat layer 801 is disposed on one side of the electroluminescent unit 70.
  • a spacer 110 may be disposed between the first flat layer 701 and the second flat layer 801.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be kept at a certain distance, thereby avoiding the electrodes of the first organic electroluminescent unit 70 and the electrodes of the second organic electroluminescent unit 80. Interplay between each other.
  • the organic electroluminescent display panel further includes a driving module.
  • the driving module is connected to the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80, and is configured to drive the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to emit light.
  • the driving module may include a source driving module and a gate driving module.
  • the driving module may include a source driving module and an array substrate row driving unit (ie, a GOA unit).
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may be connected to the same driving module, and simultaneously drive the first organic electroluminescent unit 70 and the second by using the driving module.
  • the organic electroluminescent unit 80 emits light. At this time, the luminance of the light emitted by the first organic electroluminescence unit 70 and the luminance of the light emitted by the second organic electroluminescence unit 80 are the same.
  • the driving module may also include a first sub-driving module and a second sub-driving module, and drive the first organic electroluminescent unit 70 and the second by using the first sub-driving module and the second sub-driving module, respectively.
  • the organic electroluminescent unit 80 emits light. At this time, the brightness of the light emitted by the first organic electroluminescence unit 70 and the brightness of the light emitted by the second organic electroluminescence unit 80 may be the same or different.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be driven to emit light by providing a driving module.
  • the driving module may be configured to simultaneously drive the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to emit light.
  • the driving module When the driving module simultaneously drives the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to emit light, the signal line for driving the first organic electroluminescent unit 70 to emit light and for driving the second organic electroluminescence
  • the signal lines that the unit 80 emits are connected to the drive module.
  • the driving module can simultaneously drive the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to emit light.
  • the same type of signal lines are electrically connected, and the driving module is A signal line for driving the first organic electroluminescent unit 70 to emit light or a signal line for driving the second organic electroluminescent unit 80 to emit light is connected. In this manner, the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be simultaneously driven to emit light.
  • the same type of signal lines are electrically connected.
  • the data line for driving the first organic electroluminescent unit 70 to emit light and the second organic electric unit for driving The data lines that cause the light-emitting unit 80 to emit light are electrically connected, and at the same time, the gate lines for driving the first organic electroluminescence unit 70 to emit light are electrically connected to the gate lines for driving the second organic electroluminescence unit 80 to emit light.
  • a signal line 120 for driving the first organic electroluminescence unit 70 to emit light and a signal line 120 for driving the second organic electroluminescence unit 80 to emit light may pass through an anisotropic conductive film 130 (Anisotropic Conductive Film). Electrical connection. According to the characteristics of the anisotropic conductive film 130, the anisotropic conductive film 130 is turned on in the Z-axis direction, and the anisotropic conductive film 130 is insulated in the XY plane.
  • the driving module is configured to simultaneously drive the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to emit light
  • the first organic electroluminescent unit 70 and the second organic electric device are disposed correspondingly.
  • the brightness of the light emitted by the illumination unit 80 is the same.
  • the driving module is configured to simultaneously drive the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to emit light, only one driving module needs to be disposed in the organic electroluminescent display panel. can. Further, it is also possible to control the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 to simultaneously emit light.
  • the driving module may include a first sub driving module 140 and a second sub driving module 150 .
  • the first sub-driving module 140 is connected to the first organic electroluminescent unit 70 and configured to drive the first organic electroluminescent unit 70 to emit light.
  • the second sub-driving module 150 is connected to the second organic electroluminescent unit 80 and is used to drive the second organic electroluminescent unit 80 to emit light.
  • first base substrate 50, the second base substrate 60, and the first base substrate 50 and the second base substrate 60 are illustrated for convenience of illustration.
  • the organic electroluminescent unit and other film layers on the upper substrate substrate 50 and the second substrate substrate 60 are shown as not completely overlapping in the horizontal direction in the drawing.
  • first substrate substrate 50 and the second substrate substrate 60 may be completely overlapped in the horizontal direction of the drawing.
  • the first sub-driving module 140 may be connected to a first printed circuit board (PCB) 160, and the second sub-driving module 150 may be combined with the second printing.
  • the circuit board 170 is connected.
  • both the first sub-driver module 140 and the second sub-driver module 150 may be connected to the same printed circuit board.
  • the control unit disposed on the first printed circuit board 160 and disposed in the second The control unit on the printed circuit board 170 can control the first sub-driver module 140 and the second sub-driver module 150, respectively, such that the first sub-driver module 140 and the second sub-driver module 150 can operate independently.
  • control unit disposed on the first printed circuit board 160 may control the first sub-driving module 140 to cause the first organic electroluminescent unit 70 to emit light.
  • control unit disposed on the second printed circuit board 170 can control the second sub-driving module 150 such that the second organic electroluminescent unit 80 does not emit light.
  • control unit disposed on the first printed circuit board 160 may control the first sub-driving module 140 such that the first organic electroluminescent unit 70 does not emit light, and is disposed in the second printed circuit.
  • the control unit on the board 170 can control the second sub-drive module 150 to cause the second organic electroluminescent unit 80 to emit light.
  • the control unit disposed on the first printed circuit board 160 and the control unit disposed on the second printed circuit board 170 respectively control the first sub-drive module 140 and the second sub-drive module 150
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are both caused to emit light.
  • the brightness of the light emitted by the first organic electroluminescent unit 70 and the brightness of the light emitted by the second organic electroluminescent unit 80 may be the same or different.
  • the driving module and the printed circuit board may be electrically connected by using a chip on film (COF) 180.
  • COF chip on film
  • the driving module may include the first sub driving module 140 and the second sub driving module 150.
  • the first sub-electroluminescent unit 70 and the second sub-electroluminescent unit 80 can be driven to emit light using the first sub-driving module 140 and the second sub-driving module 150, respectively.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be individually controlled.
  • a first signal line may be disposed on the first substrate substrate 50, and a second signal line may be disposed on the second substrate substrate 60.
  • the first sub-driving module 140 may be disposed on the first substrate substrate 50 and connected to the first signal line.
  • the second sub-driving module 150 may be disposed on the second substrate substrate 60 and connected to the second signal line.
  • the first sub-driving module 140 may be disposed on the first substrate substrate 50 and connected to the first signal line for driving the first organic electroluminescent unit 70 to emit light.
  • the second sub-driving module 150 may be disposed on the second substrate substrate 60 and connected to the second signal line for driving the second organic electroluminescent unit 80 to emit light.
  • the first sub-driving module 140 may be disposed on the first substrate substrate 50 and connected to the first printed circuit board 160.
  • the second sub-driving module 150 may be disposed on the second substrate substrate 60 and connected to the second printed circuit board 170.
  • the first printed circuit board 160 and the second printed circuit board 170 can independently control the first sub-driving module 140 and the second sub-driving module 150, respectively, thereby driving the first organic electroluminescent unit 70 and the second The organic electroluminescent unit 80 emits light.
  • the first sub-driving module 140 and the second sub-driving module 150 may be disposed on two substrate substrates, respectively. In this way, each sub-driver module is easily connected to a signal line disposed on the corresponding substrate.
  • a first signal line 1201 may be disposed on the first substrate substrate 50, and a second signal line 1202 and a third signal line 1203 may be disposed on the second substrate substrate 60. Further, the first signal line 1201 is electrically connected to the third signal line 1203 through the anisotropic conductive film 130. As shown in FIG. 8, the first sub-driving module 140 and the second sub-driving module 150 are both located on the second substrate 60, wherein the first sub-driving module 140 is connected to the third signal line 1203, and the second sub-driver The module 150 is connected to the second signal line 1202.
  • the first signal line 1201 on the first substrate substrate 50 can be passed through the anisotropic conductive film 130.
  • the second substrate substrate 60 is transferred (specifically, the third signal line 1203 disposed thereon) to facilitate connection with the first sub-driving module 140.
  • the first sub-driving module 140 and the second sub-driving module 150 may also be located on the first base substrate 50. In this way, the second signal line 1202 on the second substrate substrate 60 can also be transferred to the first substrate substrate 50 through the anisotropic conductive film 130 to be connected to the second sub-driving module 150.
  • the first sub-driving module 140 and the second sub-driving module 150 may both be located on the second substrate substrate 60, and the first sub-driving module 140 and the second sub-driving module 150 are printed the same.
  • the boards are connected.
  • the first sub-driving module 140 and the second sub-driving module 150 can be simultaneously controlled by the control unit on the printed circuit board, thereby causing the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 simultaneously emits light.
  • the first sub-drive module 140 and the second sub-drive module 150 can also be separately controlled by the control unit on the printed circuit board.
  • the first sub-driving module 140 and the second sub-driving module 150 are connected to the same printed circuit board.
  • the first sub-driving module 140 and the second sub-driving module 150 may be disposed on the same side of the upper or lower surface of the same substrate.
  • first signal line 1201 on the first base substrate 50 may be transferred to the third signal line 1203 on the second substrate substrate 60.
  • the second signal line 1202 and the third signal line 1203 may be spaced apart to prevent unevenness in resistance.
  • the cutting process after the first base substrate 50 provided with the first organic electroluminescence unit 70 and the second base substrate 60 provided with the second organic electroluminescence unit 80 are paired with the cartridge Since the first sub-driving module 140 and the second sub-driving module 150 are disposed on the first base substrate 50 and the second sub-substrate 60, respectively, it is necessary to perform cutting from the front and back surfaces of the organic electroluminescence display panel. Further, such cutting of the first base substrate 50 and the second base substrate 60 is also a non-edge cutting. Thus, it is difficult to take out the organic electroluminescence display panel after the cutting is completed.
  • the first sub-driving module 140 and the second sub-driving module 150 may be disposed on the same substrate, for example, on the second substrate 60, thereby reducing The difficulty in making organic electroluminescent display panels.
  • the first substrate substrate 50 may be provided with a first data signal line 1204 and a first array substrate row driving signal line 1205 (also referred to as a GOA signal line), and the second substrate A second data signal line 1206, a third data signal line 1207, and a second array substrate row driving signal line 1208 may be disposed on the substrate 60.
  • the first data signal line 1204 is electrically connected to the third data signal line 1207 through the anisotropic conductive film 130
  • the first array substrate row driving signal line 1205 is driven through the anisotropic conductive film 130 and the second array substrate row.
  • Signal line 1208 is electrically connected.
  • the driving module may include a first source driving module, a second source driving module, and an array substrate row driving unit (also referred to as a GOA unit) on the second substrate substrate 60.
  • the first source driving module is electrically connected to the third data signal line 1207
  • the second source driving module is electrically connected to the second data signal line 1206, and the array substrate row driving unit is electrically connected to the second array substrate row driving signal line 1208.
  • the first source driving module, the second source driving module, and the array substrate row driving unit may also be located on the first substrate substrate 50.
  • the signal lines on the second base substrate 60 should be transferred to the first base substrate 50.
  • the second data signal line 1206 and the third data signal line 1207 are spaced apart, so that resistance unevenness can be prevented.
  • the first array substrate row driving signal line 1205 is electrically connected to the second array substrate row driving signal line 1208 through the anisotropic conductive film 130, and the array substrate row driving unit is electrically connected to the second array substrate row driving signal line 1208. .
  • the scan signals can be simultaneously input to the first array substrate row driving signal line 1205 and the second array substrate row driving signal line 1208 through the array substrate row driving unit.
  • the first source driving module and the second source driving module are electrically connected to the third data signal line 1207 and the second data signal line 1206, respectively, and are respectively used to the third data signal line 1207 and the second data signal line 1206, respectively. Provide data signals.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can be driven to emit light. Since the first source driving module and the second source driving module respectively supply the data signals to the third data signal line 1207 and the second data signal line 1206, respectively, the corresponding first organic electroluminescent unit 70 and the second one are provided.
  • the brightness of the light emitted by the electroluminescent unit 80 may be the same or different. When the luminances of the light emitted by the corresponding first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are different, the number of gray levels of the organic electroluminescent display panel can also be increased.
  • one array substrate row driving unit may be disposed while the first array substrate row driving signal line 1205 is provided. And the second array substrate row driving signal line 1208 is controlled. In this manner, the first array substrate row driving signal line 1205 and the second array substrate row driving signal line 1208 can be simultaneously scanned. In addition, by relatively arranging the two array substrate row driving units, the manufacturing process of the display panel can also be simplified.
  • the preparation method may include the following steps.
  • each of the first organic electroluminescent units 70 may include a first electrode 21, a second electrode 31, and a functional layer 41 disposed between the first electrode 21 and the second electrode 31. Further, when the first electrode 21 of the first organic electroluminescent unit 70 is electrically connected to the drain of the thin film transistor, the second electrodes 31 of the respective first organic electroluminescent units 70 may be connected to each other, that is, the second electrode 31 For a whole layer. Alternatively, the second electrodes 31 of the respective first organic electroluminescent units 70 may also be independent of each other. As an example, the first electrode 21, the second electrode 31, and the functional layer 41 may be formed by a vapor deposition method.
  • the above preparation method may further include forming a pixel circuit layer on the first base substrate 50 before forming the plurality of first organic electroluminescent units 70 on the first base substrate 50.
  • the pixel circuit layer may include a Thin Film Transistor (TFT) and a charging layer. After that, a plurality of first organic electroluminescent units 70 may be formed on the pixel circuit layer.
  • TFT Thin Film Transistor
  • the above step S100 may further include: forming a black matrix pattern 902 and a color film on the first base substrate 70 before forming the plurality of first organic electroluminescent units 70 on the first base substrate 50.
  • Layer 90 As an example, the color film layer 90 may include a plurality of color resist units 901.
  • the above step S100 may further include: forming a first on the plurality of first organic electroluminescent units 70 after forming the plurality of first organic electroluminescent units 70 on the first base substrate 50 Flat layer 701.
  • a plurality of second organic electroluminescent units 80 are formed on the second base substrate 60.
  • the process of forming the plurality of second organic electroluminescent units 80 on the second substrate 60 is similar to the process of forming the plurality of first organic electroluminescent units 70 on the first substrate 50, and this I won't go into details here.
  • step S100 may be performed before, after or simultaneously with step S101.
  • the above preparation method may further include forming a pixel circuit layer on the second base substrate 60 before forming the plurality of second organic electroluminescent units 80 on the second base substrate 60.
  • the pixel circuit layer may include a Thin Film Transistor (TFT) and a charging layer. After that, a plurality of second organic electroluminescent units 80 are formed on the pixel circuit layer.
  • TFT Thin Film Transistor
  • the above step S101 may further include forming the light-reflecting layer 100 on the second base substrate 60 before forming the plurality of second organic electroluminescent units 80 on the second base substrate 60.
  • the above step S101 may further include: forming a second organic electroluminescent unit 80 on the second substrate 60 after forming a plurality of second organic electroluminescent units 80 The second flat layer 801 is formed, and a spacer 110 is formed on the second flat layer 801 at a position facing the pixel defining region.
  • the colors of the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 which are disposed one by one can be flexibly selected according to practical applications.
  • the colors of the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may be the same.
  • the colors of the light emitted by the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may also be different.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may emit any of the three primary colors of light.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may also emit white light, or light of other colors than the three primary colors.
  • the brightness of the light emitted by the corresponding first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 may be the same or different.
  • a sealant may be applied to the edge of the first substrate 50 or the edge of the second substrate 60 to The first substrate and the second substrate are bonded.
  • the organic electroluminescent display panel includes the first substrate and the second substrate disposed opposite to each other in the above embodiment, in an alternative embodiment, the first Any of the base substrate and the second substrate may be replaced with other additional film layers.
  • the organic electroluminescent display panel includes only one substrate substrate, wherein the first organic electroluminescent unit and the second organic electroluminescent unit are stacked on the sole substrate on.
  • the organic electroluminescent display panel may further include another film layer disposed on a side of the second organic electroluminescent unit remote from the first organic electroluminescent unit, for example, a reflective layer Wait.
  • the second substrate substrate can be removed, and further, replaced with any other suitable film layer. The present disclosure is intended to cover all such alternative equivalents.
  • Embodiments of the present disclosure provide a method of fabricating an organic electroluminescence display panel.
  • the organic electroluminescence display panel formed by such a preparation method may include: a plurality of first organic electroluminescence cells 70 formed on the first substrate substrate 50; and formed on the second substrate substrate 60 A plurality of second organic electroluminescent units 80.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 can simultaneously emit light.
  • each sub-pixel unit has two organic electro-optical units. Light unit.
  • the display luminance of the organic electroluminescence display panel can be improved, so that the maximum value of the luminance of the organic electroluminescence display panel is larger, thereby Conducive to the application of large-size display panels and long-distance observation.
  • the first organic electroluminescent unit 70 and the second organic electroluminescent unit 80 are formed on two base substrates, respectively. On the one hand, this avoids the mutual influence of the electrodes in the first organic electroluminescent unit 70 and the electrodes in the second organic electroluminescent unit 80, thereby affecting the display quality, while on the other hand, this also avoids the first organic electricity.
  • the electroluminescent unit 70 and the second organic electroluminescent unit 80 interact with each other at the time of fabrication, thereby simplifying the manufacturing process.

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Abstract

本公开涉及显示技术领域，并且提供了有机电致发光显示面板及其制备方法。该有机电致发光显示面板包括：相对设置的第一衬底基板和第二衬底基板；彼此间隔地设置在所述第一衬底基板面向所述第二衬底基板的一侧上的多个第一有机电致发光单元；以及彼此间隔地设置在所述第二衬底基板面向所述第一衬底基板的一侧上的多个第二有机电致发光单元。所述多个第一有机电致发光单元与所述多个第二有机电致发光单元在垂直于所述第一衬底基板的延伸面的方向上间隔开。每一个第一有机电致发光单元在所述第二衬底基板上的正投影与一个对应的第二有机电致发光单元至少部分重叠。

Description

有机电致发光显示面板及其制备方法
对相关申请的交叉引用
本申请要求2017年8月31日提交的中国专利申请号201710773222.0的优先权，该中国专利申请以其整体通过引用并入本文。
技术领域
本公开涉及显示技术领域，并且具体地提供了有机电致发光显示面板及其制备方法。
背景技术
有机电致发光(Organic有机电致发光Electroluminescence)显示面板由于具有自发光、反应快、视角广、可挠性高以及轻薄等优点而受到越来越多消费者的青睐。
如图1所示，有机电致发光显示面板的结构一般包括阵列基板01和封装盖板(也可以称为封装膜层)02，其中，封装盖板02用于起封装作用，并且阵列基板01用于显示。具体地，阵列基板01包括设置在衬底基板10上的阳极20、阴极30以及形成在阳极20和阴极30之间的功能层40。在有机电致发光显示面板中，当向阳极20和阴极30施加电流时，功能层40发光。功能层40的发光强弱主要与电流的大小以及功能层40自身的性质有关，其中，电流越大，功能层40的发光强度就越大。然而，当电流增大到一定值时，功能层40的发光强度将保持不变。因而，这就使得功能层40的发光强度的最大值受到一定制约。特别地，对于大尺寸显示面板而言，或者在远距离观看条件下，有机电致发光显示面板由于自发光结构的亮度不够而容易导致应用方面很大的局限性。
发明内容
根据本公开的一方面，实施例提供了一种有机电致发光显示面板。具体地，所述有机电致发光显示面板包括：相对设置的第一衬底基板和第二衬底基板；设置在所述第一衬底基板面向所述第二衬底基板的一侧上的多个第一有机电致发光单元；以及设置在所述第二衬底基板面向所述第一衬底基板的一侧上的多个第二有机电致发光单元。每一个第一有机电致发光单元在所述第二衬底基板上的正投影与一个对应 的第二有机电致发光单元至少部分重叠。
根据具体实现方案，在本公开的实施例提供的有机电致发光显示面板中，与一个第一有机电致发光单元在所述第二衬底基板上的正投影至少部分重叠的第二有机电致发光单元配置为发射与所述一个第一有机电致发光单元相同颜色的光。
根据具体实现方案，在本公开的实施例提供的有机电致发光显示面板中，所述第一有机电致发光单元设置为比所述第二有机电致发光单元更靠近所述有机电致发光显示面板的出光面。
根据具体实现方案，在本公开的实施例提供的有机电致发光显示面板中，所述第一有机电致发光单元和所述第二有机电致发光单元中的至少一个配置为发射白光。此外，所述有机电致发光显示面板还包括：设置在所述第一有机电致发光单元远离所述第二有机电致发光单元的一侧上的彩膜层。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板还包括：设置在所述第二有机电致发光单元远离所述第一有机电致发光单元的一侧上的反光层。
根据具体实现方案，在本公开的实施例提供的有机电致发光显示面板中，每一个第二有机电致发光单元包括层叠设置在所述第二衬底基板上的第一电极、功能层以及第二电极，其中，所述第一电极由反光材料制成。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板还包括：设置在所述第一有机电致发光单元靠近所述第二有机电致发光单元的一侧上的第一平坦层；设置在所述第二有机电致发光单元靠近所述第一有机电致发光单元的一侧上的第二平坦层；以及设置在所述第一平坦层和所述第二平坦层之间的隔垫物。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板还包括驱动模块。具体地，所述驱动模块与所述第一有机电致发光单元和所述第二有机电致发光单元相连，并且配置用于驱动所述第一有机电致发光单元和所述第二有机电致发光单元发光。
根据具体实现方案，在本公开的实施例提供的有机电致发光显示面板中，所述驱动模块配置用于同时驱动所述第一有机电致发光单元和所述第二有机电致发光单元发光。
根据具体实现方案，在本公开的实施例提供的有机电致发光显示面板中，所述驱动模块包括第一子驱动模块和第二子驱动模块。进一步地，所述第一子驱动模块与所述第一有机电致发光单元相连，并且配置用于驱动所述第一有机电致发光单元发光。此外，所述第二子驱动模块与所述第二有机电致发光单元相连，并且配置用于驱动所述第二有机电致发光单元发光。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板还包括：设置在所述第一衬底基板上的第一信号线；以及设置在所述第二衬底基板上的第二信号线。进一步地，所述第一子驱动模块设置在所述第一衬底基板上，并且与所述第一信号线相连。此外，所述第二子驱动模块设置在所述第二衬底基板上，并且与所述第二信号线相连。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板还包括：设置在所述第一衬底基板上的第一信号线；以及设置在所述第二衬底基板上的第二信号线和第三信号线，其中，所述第一信号线通过各向异性导电膜与所述第三信号线电连接。进一步地，所述第一子驱动模块和所述第二子驱动模块位于所述第二衬底基板上，所述第一子驱动模块与所述第三信号线相连，并且所述第二子驱动模块与所述第二信号线相连。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板还包括：设置在所述第一衬底基板上的第一数据信号线和第一驱动信号线；以及设置在所述第二衬底基板上的第二数据信号线、第三数据信号线和第二驱动信号线，其中，所述第一数据信号线通过各向异性导电膜与所述第三数据信号线电连接，并且所述第一驱动信号线通过各向异性导电膜与所述第二驱动信号线电连接。进一步地，所述驱动模块包括位于第二衬底基板上的第一子驱动模块、第二子驱动模块和阵列基板行驱动单元，其中，所述第一子驱动模块与所述第三数据信号线电连接，所述第二子驱动模块与所述第二数据信号线电连接，并且所述阵列基板行驱动单元与所述第二驱动信号线电连接。
根据本公开的另一方面，实施例还提供了一种用于有机电致发光显示面板的制备方法。具体地，所述制备方法包括：在第一衬底基板上形成多个第一有机电致发光单元；在第二衬底基板上形成多个第二 有机电致发光单元；以及将所述第一衬底基板和所述第二衬底基板对盒，使得每一个第一有机电致发光单元在所述第二衬底基板上的正投影与一个对应的第二有机电致发光单元至少部分重叠。
根据本公开的又一方面，实施例还提供了一种有机电致发光显示面板。具体地，该有机电致发光显示面板包括：衬底基板；彼此间隔地设置在所述衬底基板上的多个第一有机电致发光单元；以及彼此间隔地设置在所述多个第一有机电致发光单元远离所述衬底基板的一侧上的多个第二有机电致发光单元。每一个第一有机电致发光单元在所述衬底基板上的正投影与一个对应的第二有机电致发光单元在所述衬底基板上的正投影至少部分重叠。
根据具体实现方案，在由本公开的实施例提供的有机电致发光显示面板中，与一个第一有机电致发光单元在所述第二衬底基板上的正投影至少部分重叠的第二有机电致发光单元配置为发射与所述一个第一有机电致发光单元相同颜色的光。
根据具体实现方案，在由本公开的实施例提供的有机电致发光显示面板中，所述第一有机电致发光单元设置为比所述第二有机电致发光单元更靠近所述有机电致发光显示面板的出光面。
根据具体实现方案，在由本公开的实施例提供的有机电致发光显示面板中，所述第一有机电致发光单元和所述第二有机电致发光单元中的至少一个配置为发射白光。此外，所述有机电致发光显示面板还包括：设置在所述第一有机电致发光单元远离所述第二有机电致发光单元的一侧上的彩膜层。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板，还包括：设置在所述第一有机电致发光单元靠近所述第二有机电致发光单元的一侧上的第一平坦层；设置在所述第二有机电致发光单元靠近所述第一有机电致发光单元的一侧上的第二平坦层；以及设置在所述第一平坦层和所述第二平坦层之间的隔垫物。
根据具体实现方案，由本公开的实施例提供的有机电致发光显示面板，还包括驱动模块。具体地，所述驱动模块与所述第一有机电致发光单元和所述第二有机电致发光单元相连，并且配置用于驱动所述第一有机电致发光单元和所述第二有机电致发光单元发光。
附图说明
为了更清楚地说明本公开的实施例中的技术方案，下面将对实施例的描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本公开的一些实施例。对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些实施例而获得其它各种可替换的实施例。
图1示出了根据现有技术的有机电致发光显示面板的结构示意图；
图2示出了根据本公开的一个实施例的有机电致发光显示面板的结构示意图；
图3(a)示出了根据本公开的一个实施例的包括彩膜层的有机电致发光显示面板的结构示意图；
图3(b)示出了根据本公开的另一个实施例的包括彩膜层的有机电致发光显示面板的结构示意图；
图4(a)示出了根据本公开的一个实施例的包括反光层的有机电致发光显示面板的结构示意图；
图4(b)示出了根据本公开的另一个实施例的包括反光层的有机电致发光显示面板的结构示意图；
图5示出了根据本公开的实施例的包括平坦层和隔垫物的有机电致发光显示面板的结构示意图；
图6示出了根据本公开的实施例的通过各向异性导电膜电连接的第一衬底基板上的信号线和第二衬底基板上的信号线的结构示意图；
图7示出了根据本公开的实施例的设置在第一衬底基板上的第一子驱动模块和设置在第二衬底基板上的第二子驱动模块的结构示意图；
图8示出了根据本公开的实施例的设置在第二衬底基板的第一子驱动模块和第二子驱动模块的结构示意图；
图9示出了根据本公开的实施例的转接至第二衬底基板上的第一衬底基板上的信号线的结构示意图；
图10示出了根据本公开的实施例的经电连接的第一驱动信号线与第二驱动信号线的结构示意图；以及
图11示出了根据本公开的实施例的用于有机电致发光显示面板 的制备方法的流程示意图。
具体实施方式
下面将结合本公开的实施例中的附图，对本公开的实施例中的技术方案进行清楚且完整的描述。显然，所描述的实施例仅仅是本公开的一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都落入在本公开的保护范围内。
在接下来的详细描述中，分别使用以下附图标记来指代在本文中提到的各种组件：01-阵列基板；02-封装盖板；10-衬底基板；20-阳极；21-第一有机电致发光单元的第一电极；22-第二有机电致发光单元的第一电极；30-阴极；31-第一有机电致发光单元的第二电极；32-第二有机电致发光单元的第二电极；40-功能层；41-第一有机电致发光单元的功能层；42-第二有机电致发光单元的功能层；50-第一衬底基板；60-第二衬底基板；70-第一有机电致发光单元；701-第一平坦层；80-第二有机电致发光单元；801-第二平坦层；90-彩膜层；901-色阻单元；902-黑矩阵图案；100-反光层；110-隔垫物；120-信号线；1201-第一信号线；1202-第二信号线；1203-第三信号线；1204-第一数据信号线；1205-第一驱动信号线；1206-第二数据信号线；1207-第三数据信号线；1208-第二驱动信号线；130-各向异性导电膜；140-第一子驱动模块；150-第二子驱动模块；160-第一印刷电路板；170-第二印刷电路板；以及180-覆晶薄膜。本公开的实施例提供了一种有机电致发光显示面板。如图2所示，有机电致发光显示面板包括相对设置的第一衬底基板50和第二衬底基板60。第一衬底基板50上(例如，在其上表面上)设置有多个第一有机电致发光单元70，并且第二衬底基板60上(例如，在其下表面上)设置有多个第二有机电致发光单元80。每一个第一有机电致发光单元70在第二衬底基板50上的正投影和一个对应的第二有机电致发光单元80至少部分重叠。也就是说，第一有机电致发光单元70和第二有机电致发光单元80一一对应设置。此处，需要指出的是，在本文中使用的表述“至少部分重叠”不仅涵盖部分地重叠，而且还涵盖完全重叠。这意味着，第一有机电致发光单元70在第二衬底基板50上的正投影可以与一个对应的第二有机电致发光单元80仅部 分地重叠，也可以完全地重叠。作为示例，两者之间的重叠比例可以例如为100％(即，完全重叠)、95％(即，部分地重叠)等等。在获益于本公开的教导的前提下，本领域技术人员应当能够容易地设想到所有这些重叠都落入在本公开的范围内。
需要说明的是，第一有机电致发光单元70和第二有机电致发光单元80可以包括阳极、阴极以及设置在阳极和阴极之间的功能层。除发光层外，功能层还可以包括空穴传输层、空穴注入层、电子传输层以及电子注入层中的至少一种。此外，当有机电致发光单元的阳极与薄膜晶体管的漏极电连接时，各个有机电致发光单元的阴极可以相互连接，即，阴极为一整层。当然，可替换地，各个有机电致发光单元的阴极也可以是相互独立的。
还需要说明的是，由于第一有机电致发光单元70和第二有机电致发光单元80一一对应设置，因而第一有机电致发光单元70和第二有机电致发光单元80不影响彼此的正常光发射。例如，从第一有机电致发光单元70和第二有机电致发光单元80发出的光可以均由第二衬底基板60出射。在这样的情况下，由第一有机电致发光单元70发出的光可以透过第二有机电致发光单元80。这意味着，第二有机电致发光单元80由透明材料制成。
此外，还要指出的是，由第一有机电致发光单元70和第二有机电致发光单元80发出光的颜色可以根据实际需要灵活选择。例如，由第一有机电致发光单元70和第二有机电致发光单元80发出的光的颜色可以相同。可替换地，由第一有机电致发光单元70和第二有机电致发光单元80发出的光的颜色也可以不相同。此外，从第一有机电致发光单元70和第二有机电致发光单元80可以发出三原色光中的任一种。当然，从第一有机电致发光单元70和第二有机电致发光单元80也可以发出白光，或者除三原色光以外的其它颜色的光。
进一步地，需要说明的是，对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出光的亮度可以相同，也可以不同。
最后，还需要指出的是，表述“第一有机电致发光单元70和第二有机电致发光单元80一一对应设置”指的是沿有机电致发光显示面板的厚度方向，多个第一有机电致发光单元70和多个第二有机电致发光单元80一一对应设置，并且例如每个亚像素区域包括对应设置的一 个第一有机电致发光单元70和一个第二有机电致发光单元80。
本公开的实施例提供了一种有机电致发光显示面板。有机电致发光显示面板包括设置在第一衬底基板50上的多个第一有机电致发光单元70和设置在第二衬底基板60上的多个第二有机电致发光单元80，其中，第一有机电致发光单元70和第二有机电致发光单元80都可以发光。相对于常规有机电致发光显示面板中每个亚像素单元只有一个有机电致发光单元发光，根据本公开的实施例，每个亚像素单元均提供有两个有机电致发光单元。因而，由本公开的实施例提供的有机电致发光显示面板提高了有机电致发光显示面板的显示亮度，使得有机电致发光显示面板的发光亮度的最大值更大，从而有利于大尺寸显示面板的应用以及远距离的观察。此外，在本公开的实施例中，第一有机电致发光单元70和第二有机电致发光单元80分别设置在两个衬底基板上。一方面，这避免了第一有机电致发光单元70中的电极和第二有机电致发光单元80中的电极相互影响，从而影响显示质量，并且另一方面，这还避免了第一有机电致发光单元70和第二有机电致发光单元80在制作时相互影响，从而简化制作工艺。
进一步地，当对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出光的亮度完全不相同时，还可以增加有机电致发光显示面板的灰阶数。
可选地，对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出光的颜色相同。
作为示例，对应设置的第一有机电致发光单元70和第二有机电致发光单元80可以均发白光。当然，可替换地，对应设置的第一有机电致发光单元70和第二有机电致发光单元80也可以发出三原色光中的一种。
在本公开的实施例，如果对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出光的颜色相同，那么从每个亚像素单元发出的光的颜色相同，进而易于控制从一个像素单元发出的光的颜色。
可选地，第一有机电致发光单元70设置为相比第二有机电致发光单元80更靠近整个有机电致发光显示面板的出光侧，即，显示侧。如图2所示，第一有机电致发光单元70包括第一电极21、第二电极 31和设置在第一电极21和第二电极31之间的功能层41，其中，第一电极21和第二电极31是透光的。
在这样的情况下，由于第一有机电致发光单元70的第一电极21和第二电极31是透光的，因此，当第一有机电致发光单元70比第二有机电致发光单元80靠近显示侧时，由第二有机电致发光单元80发出的光可以透过第一有机电致发光单元70。
进一步可选地，如图3(a)和图3(b)所示，在第一有机电致发光单元70和/或第二有机电致发光单元80发白光(即，设置在第一衬底基板50上的第一有机电致发光单元70全发白光和/或设置在第二衬底基板60上的第二有机电致发光单元80全发白光)的情况下，有机电致发光显示面板还可以包括设置在第一有机电致发光单元70远离第二有机电致发光单元80的一侧上的彩膜层90。
具体地，彩膜层90可以包括多个色阻单元901。例如，色阻单元901可以包括红色色阻单元(R)、绿色色阻单元(G)或蓝色色阻单元(B)。有利地，每一个色阻单元901应该和一个第一有机电致发光单元70或者一个第二有机电致发光单元80对应设置。
此处，在各个色阻单元901之间还可以设置黑矩阵图案(Black Matrix，简称BM)902。
需要说明的是，当对应设置的第一有机电致发光单元70和第二有机电致发光单元80中的一个发白光而另一个发某一三原色光时，则色阻单元901的颜色应和该三原色光的颜色相同。示例性地，当对应设置的第一有机电致发光单元70发白光而第二有机电致发光单元80发红光时，与发红光的第二有机电致发光单元80对应的色阻单元901则为红色色阻单元。
此处，需要指出的是，彩膜层90可以根据实际需要灵活地设置在任何适合的位置处。作为示例，如图3(a)所示，彩膜层90可以设置在第一有机电致发光单元70和第一衬底基板50之间。可替换地，如图3(b)所示，彩膜层90还可以设置在第一衬底基板50远离第一有机电致发光单元70的一侧上。当彩膜层90设置在第一衬底基板50远离第一有机电致发光单元70的一侧上时，还可以在彩色膜层90远离第一衬底基板50的一侧上设置保护层，以便防止在有机电致发光显示面板的制作过程中对彩膜层90的无意破坏。
进一步地，还可以在第一衬底基板50远离第一有机电致发光单元70的一侧上设置偏光片(Polarizer，简称POL)。
根据本公开的实施例，有机电致发光显示面板还包括彩膜层90。这样，由第一有机电致发光单元70和第二有机电致发光单元80发出的光在通过彩膜层90之后可以变为三原色光。因而，有机电致发光显示面板可以实现彩色显示。
可选地，如图4(a)和图4(b)所示，有机电致发光显示面板还可以包括设置在第二有机电致发光单元80远离第一有机电致发光单元70的一侧上的反光层100。
具体地，反光层100可以利用任何适合的反光材料来形成，诸如，反射率较高的材料。例如，该反光材料可以为银(Ag)、Al(铝)或铬合金中的至少一种。
需要说明的是，若第二有机电致发光单元80中的第一电极相对于第二电极更靠近第二衬底基板60，那么反光层100也可以和第二有机电致发光单元80的第一电极共用。此时，第一电极为反射电极。也就是说，第一电极既可以起到用于驱动功能层发光的作用，又可以反射光，从而起到反光层100的作用。
此处，反光层100可以设置在任何适合的位置处。如图4(a)所示，反光层100可以设置在第二有机电致发光单元80和第二衬底基板60之间。可替换地，如图4(b)所示，反光层100还可以设置在第二衬底基板60远离第二有机电致发光单元80的一侧上。当反光层100设置在第二衬底基板60远离第二有机电致发光单元80的一侧上时，还可以在反光层100远离第二衬底基板60的一侧上设置保护层，以便防止在有机电致发光显示面板的制作过程中对反光层100的无意破坏。
根据本公开的实施例，有机电致发光显示面板还包括反光层100。这样，当由第一有机电致发光单元70和第二有机电致发光单元80发出的光入射到反光层100上时，会被反光层100反射，从而最终从显示侧出射。以这样的方式，可以提高由第一有机电致发光单元70和第二有机电致发光单元80发出的光的利用率。
可选地，如图3(a)和图3(b)所示，第二有机电致发光单元80可以包括依次设置在第二衬底基板60上的第一电极22、功能层42 以及第二电极32，其中，第一电极22由反光材料制成。
作为示例，第一电极22可以为阳极，并且第二电极32可以为阴极。当然，在其它示例中，第一电极22可以为阴极，并且第二电极33可以为阳极。
此处，需要说明的是，第一电极22可以采用任何适合的材料来形成，只要最终具有较高的反射率即可。例如，第一电极22可以采用银(Ag)、Al(铝)或铬合金中的至少一种来形成。
根据本公开的实施例，第二有机电致发光单元80的第一电极22由反光材料制成。以这样的方式，由第一有机电致发光单元70和第二有机电致发光单元80发出的光在入射到第二有机电致发光单元80的第一电极22上时，可以被第一电极22反射，并且最终从显示侧出射。由此，提高从第一有机电致发光单元70和第二有机电致发光单元80发出的光的利用率。
可选地，如图5所示，有机电致发光显示面板还可以包括：设置在第一有机电致发光单元70靠近第二有机电致发光单元80的一侧上的第一平坦层701；设置在第二有机电致发光单元80靠近第一有机电致发光单元70的一侧上的第二平坦层801；以及设置在第一平坦层701和第二平坦层801之间的隔垫物(Post Spacer，简称PS)110。
此处，需要指出的是，隔垫物110应当设置在与黑矩阵图案902对应的区域中，以便避免对光的不利遮挡。
本领域技术人员应当容易理解到，第一平坦层701和第二平坦层801可以采用任何适合的材料来形成。例如，第一平坦层701和第二平坦层801可以由氮化硅(SiN x)、氧化硅(SiO x)或氮氧化硅(SiO xN y)中的至少一种来形成。
根据本公开的实施例，在第一有机电致发光单元70靠近第二有机电致发光单元80的一侧上设置第一平坦层701，并且在第二有机电致发光单元80靠近第一有机电致发光单元70的一侧上设置第二平坦层801。这样，在设置有第一有机电致发光单元70的第一衬底基板50和设置有第二有机电致发光单元80的第二衬底基板60的对盒之后，可以保证第一有机电致发光单元70和第二有机电致发光单元80之间的距离处处相等或近似相等。由此，确保了从有机电致发光显示面板出射的光跨整个面板是均匀的。进一步地，在第一平坦层701和第二 平坦层801之间还可以设置隔垫物110。这样，可以使第一有机电致发光单元70和第二有机电致发光单元80保持一定的距离，从而避免了第一有机电致发光单元70的电极和第二有机电致发光单元80的电极之间相互影响。
可选地，有机电致发光显示面板还包括驱动模块。具体地，驱动模块与第一有机电致发光单元70和第二有机电致发光单元80相连，并且配置用于驱动第一有机电致发光单元70和第二有机电致发光单元80发光。
作为示例，当有机电致发光显示面板为一般的显示面板时，驱动模块可以包括源驱动模块和栅驱动模块。可替换地，当有机电致发光显示面板为阵列基板行驱动(Gate Driver on Array，GOA)显示面板时，驱动模块可以包括源驱动模块和阵列基板行驱动单元(即，GOA单元)。
此处，需要说明的是，第一有机电致发光单元70和第二有机电致发光单元80可以与同一驱动模块相连，并且利用该驱动模块同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光。此时，由第一有机电致发光单元70发出的光的亮度和由第二有机电致发光单元80发出的光的亮度相同。当然，可替换地，驱动模块也可以包括第一子驱动模块和第二子驱动模块，并且分别利用第一子驱动模块和第二子驱动模块来驱动第一有机电致发光单元70和第二有机电致发光单元80发光。此时，由第一有机电致发光单元70发出的光的亮度和由第二有机电致发光单元80发出的光的亮度可以相同，也可以不相同。
在本公开的实施例中，通过设置驱动模块，可以驱动第一有机电致发光单元70和第二有机电致发光单元80发光。
可选地，驱动模块可以配置用于同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光。
当驱动模块同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光时，用于驱动第一有机电致发光单元70发光的信号线和用于驱动第二有机电致发光单元80发光的信号线均与驱动模块相连。这样，驱动模块便可以同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光。可替换地，在用于驱动第一有机电致发 光单元70发光的信号线和用于驱动第二有机电致发光单元80发光的信号线中，相同类型的信号线电连接，并且驱动模块与用于驱动第一有机电致发光单元70发光的信号线或者与用于驱动第二有机电致发光单元80发光的信号线相连接。以这样的方式，可以同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光。
根据以上描述，在用于驱动第一有机电致发光单元70发光的信号线和用于驱动第二有机电致发光单元80发光的信号线中，相同类型的信号线电连接。示例性地，在对应设置的第一有机电致发光单元70和第二有机电致发光单元80中，用于驱动第一有机电致发光单元70发光的数据线与用于驱动第二有机电致发光单元80发光的数据线电连接，并且同时，用于驱动第一有机电致发光单元70发光的栅线与用于驱动第二有机电致发光单元80发光的栅线电连接。
参考图6，用于驱动第一有机电致发光单元70发光的信号线120和用于驱动第二有机电致发光单元80发光的信号线120可以通过各向异性导电膜130(Anisotropic Conductive Film)电连接。根据各向异性导电膜130的特性，在Z轴方向上各向异性导电膜130是导通的，而在XY平面中各向异性导电膜130是绝缘的。
需要说明的是，由于驱动模块配置用于同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光，因而由对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出的光的亮度相同。
根据本公开的实施例，由于驱动模块配置用于同时驱动第一有机电致发光单元70和第二有机电致发光单元80发光，因而在有机电致发光显示面板中只需设置一个驱动模块即可。此外，还可以控制第一有机电致发光单元70和第二有机电致发光单元80同时发光。
可选地，如图7和图8所示，驱动模块可以包括第一子驱动模块140和第二子驱动模块150。具体地，第一子驱动模块140与第一有机电致发光单元70相连，并且配置用于驱动第一有机电致发光单元70发光。与此类似，第二子驱动模块150与第二有机电致发光单元80相连，并且用于驱动第二有机电致发光单元80发光。
需要说明的是，在附图7和附图8中，为了便于示意性图示第一衬底基板50、第二衬底基板60以及设置在第一衬底基板50和第二衬 底基板60上的有机电致发光单元及其它膜层，将第一衬底基板50和第二衬底基板60示出为在图中水平方向上没有完全重叠。但是，在获益于本公开的教导的情况下，本领域技术人员应当容易领会到，在图中水平方向上，第一衬底基板50和第二衬底基板60可以完全重叠。
此处，在实施例中，如图7所示，第一子驱动模块140可以与第一印刷电路板(Printed Circuit Board，简称PCB)160相连，并且第二子驱动模块150可以与第二印刷电路板170相连。可替换地，如图8所示，第一子驱动模块140和第二子驱动模块150均可以与同一印刷电路板相连。当第一子驱动模块140与第一印刷电路板160相连，并且第二子驱动模块150与第二印刷电路板170相连时，设置在第一印刷电路板160上的控制单元和设置在第二印刷电路板170上的控制单元可以分别对第一子驱动模块140和第二子驱动模块150进行控制，从而使得第一子驱动模块140和第二子驱动模块150能够独立工作。
示例性地，设置在第一印刷电路板160上的控制单元可以控制第一子驱动模块140以使第一有机电致发光单元70发光。与此相反，设置在第二印刷电路板170上的控制单元可以控制第二子驱动模块150以使第二有机电致发光单元80不发光。可替换地，在其它实施例中，设置在第一印刷电路板160上的控制单元可以控制第一子驱动模块140以使第一有机电致发光单元70不发光，并且设置在第二印刷电路板170上的控制单元可以控制第二子驱动模块150以使第二有机电致发光单元80发光。进一步地，还可以是以下情况：设置在第一印刷电路板160上的控制单元和设置在第二印刷电路板170上的控制单元分别控制第一子驱动模块140和第二子驱动模块150，以使第一有机电致发光单元70和第二有机电致发光单元80均发光。在这样的情况下，由第一有机电致发光单元70发出的光的亮度和由第二有机电致发光单元80发出的光的亮度可以相同，也可以不相同。
进一步地，如图7和图8所示，还可以利用覆晶薄膜(Chip On Film，简称COF)180将驱动模块和印刷电路板电连接。
根据本公开的实施例，驱动模块可以包括第一子驱动模块140和第二子驱动模块150。因而，可以分别利用第一子驱动模块140和第二子驱动模块150来驱动第一有机电致发光单元70和第二有机电致发光单元80发光。以这样的方式，可以对第一有机电致发光单元70和 第二有机电致发光单元80进行单独控制。
可选地，如图7所示，可以在第一衬底基板50上设置有第一信号线，并且可以在第二衬底基板60上设置有第二信号线。在这样的情况下，进一步地，第一子驱动模块140可以设置在第一衬底基板50上，并且与第一信号线相连。同时，第二子驱动模块150可以设置在第二衬底基板60上，并且与第二信号线相连。
作为示例，第一子驱动模块140可以设置在第一衬底基板50上，并且与第一信号线相连，以用于驱动第一有机电致发光单元70发光。可替换地，第二子驱动模块150可以设置在第二衬底基板60上，并且与第二信号线相连，以用于驱动第二有机电致发光单元80发光。
此处，进一步地，第一子驱动模块140可以设置在第一衬底基板50上，并且与第一印刷电路板160相连。同时，第二子驱动模块150可以设置在第二衬底基板60上，并与第二印刷电路板170相连。以这样的方式，第一印刷电路板160和第二印刷电路板170可以分别独立地控制第一子驱动模块140和第二子驱动模块150，从而驱动第一有机电致发光单元70和第二有机电致发光单元80发光。
根据本公开的实施例，第一子驱动模块140和第二子驱动模块150可以分别设置在两个衬底基板上。这样，便于各个子驱动模块与设置在相应衬底基板上的信号线相连。
可选地，如图9所示，可以在第一衬底基板50上设置有第一信号线1201，并且在第二衬底基板60上设置有第二信号线1202和第三信号线1203。进一步地，第一信号线1201通过各向异性导电膜130与第三信号线1203电连接。如图8所示，第一子驱动模块140和第二子驱动模块150均位于第二衬底基板60上，其中，第一子驱动模块140与第三信号线1203相连，并且第二子驱动模块150与第二信号线1202相连。
此处，由于第一子驱动模块140和第二子驱动模块150均位于第二衬底基板60上，因而可以通过各向异性导电膜130将第一衬底基板50上的第一信号线1201转接到第二衬底基板60上(具体地，设置在其上的第三信号线1203)，从而便于与第一子驱动模块140相连。需要说明的是，也可以使第一子驱动模块140和第二子驱动模块150均位于第一衬底基板50上。这样一来，同样可以通过各向异性导电膜 130将第二衬底基板60上的第二信号线1202转接到第一衬底基板50上，以便于与第二子驱动模块150相连。
进一步地，如图8所示，第一子驱动模块140和第二子驱动模块150可以均位于第二衬底基板60上，并且第一子驱动模块140和第二子驱动模块150与同一印刷电路板相连。在这样的情况下，可以通过该印刷电路板上的控制单元同时控制第一子驱动模块140和第二子驱动模块150，从而使得第一有机电致发光单元70和第二有机电致发光单元80同时发光。可替换地，也可以利用该印刷电路板上的控制单元分别控制第一子驱动模块140和第二子驱动模块150。此时，第一子驱动模块140和第二子驱动模块150与同一印刷电路板相连。鉴于以上所述，在本公开的实施中，有利地，第一子驱动模块140和第二子驱动模块150可以设置在同一衬底基板的上表面或下表面的同一侧边。
此外，第一衬底基板50上的第一信号线1201可以转接到第二衬底基板60上的第三信号线1203。进一步地，根据本公开的实施例，第二信号线1202和第三信号线1203可以间隔设置，从而防止电阻不均匀。
根据本公开的实施例，在设置有第一有机电致发光单元70的第一衬底基板50和设置有第二有机电致发光单元80的第二衬底基板60对盒之后的切割过程中，由于第一子驱动模块140和第二子驱动模块150分别设置在第一衬底基板50和第二衬底基板60上，所以需要从有机电致发光显示面板的正面和背面进行切割。此外，对第一衬底基板50和第二衬底基板60的这种切割还属于非齐边切割。这样，就导致了在切割完成之后难以取出有机电致发光显示面板。基于此，在本公开的实施例中，可选地，第一子驱动模块140和第二子驱动模块150可以设置在同一衬底基板上，例如设置在第二衬底基板60上，从而降低了有机电致发光显示面板的制作难度。
可选地，如图10所示，第一衬底基板50上可以设置有第一数据信号线1204和第一阵列基板行驱动信号线1205(也称为GOA信号线)，并且第二衬底基板60上可以设置有第二数据信号线1206、第三数据信号线1207和第二阵列基板行驱动信号线1208。进一步地，第一数据信号线1204通过各向异性导电膜130与第三数据信号线 1207电连接，并且第一阵列基板行驱动信号线1205通过各向异性导电膜130与第二阵列基板行驱动信号线1208电连接。此外，驱动模块可以包括位于第二衬底基板60上的第一源驱动模块、第二源驱动模块和阵列基板行驱动单元(也称GOA单元)。第一源驱动模块与第三数据信号线1207电连接，第二源驱动模块与第二数据信号线1206电连接，并且阵列基板行驱动单元与第二阵列基板行驱动信号线1208电连接。
此处，需要说明的是，第一源驱动模块、第二源驱动模块和阵列基板行驱动单元也可以位于第一衬底基板50上。在这样的情况下，应当将第二衬底基板60上的信号线转接至第一衬底基板50上。此外，在本公开的实施例中，进一步可选地，第二数据信号线1206和第三数据信号线1207间隔设置，从而可以防止电阻不均匀。
具体地，第一阵列基板行驱动信号线1205通过各向异性导电膜130与第二阵列基板行驱动信号线1208电连接，并且阵列基板行驱动单元与第二阵列基板行驱动信号线1208电连接。因而，可以通过阵列基板行驱动单元同时向第一阵列基板行驱动信号线1205和第二阵列基板行驱动信号线1208输入扫描信号。
进一步地，第一源驱动模块和第二源驱动模块分别与第三数据信号线1207和第二数据信号线1206电连接，并且用于分别向第三数据信号线1207和第二数据信号线1206提供数据信号。以这样的方式，可以驱动第一有机电致发光单元70和第二有机电致发光单元80发光。由于第一源驱动模块和第二源驱动模块分别向第三数据信号线1207和第二数据信号线1206独立地提供数据信号，因而由对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出的光的亮度可以相同，也可以不相同。当由对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出的光的亮度不相同时，还可以增加有机电致发光显示面板的灰阶数。
根据本公开的实施例，由于第一阵列基板行驱动信号线1205和第二阵列基板行驱动信号线1208电连接，因而可以设置一个阵列基板行驱动单元同时对第一阵列基板行驱动信号线1205和第二阵列基板行驱动信号线1208进行控制。以这样的方式，可以使第一阵列基板行驱动信号线1205和第二阵列基板行驱动信号线1208同时进行扫描。 此外，通过相对设置两个阵列基板行驱动单元，还可以简化显示面板的制作工艺。
根据本公开的另一方面的实施例，还提供了一种用于有机电致发光显示面板的制备方法。如图11所示，制备方法可以包括以下步骤。
S100、在第一衬底基板50上形成多个第一有机电致发光单元70。
具体地，每一个第一有机电致发光单元70可以包括第一电极21、第二电极31以及设置在第一电极21和第二电极31之间的功能层41。此外，当第一有机电致发光单元70的第一电极21与薄膜晶体管的漏极电连接时，各个第一有机电致发光单元70的第二电极31可以相互连接，即，第二电极31为一整层。可替换地，各个第一有机电致发光单元70的第二电极31也可以是相互独立的。作为示例，可以利用蒸镀法形成第一电极21、第二电极31以及功能层41。
此处，上述制备方法还可以包括：在第一衬底基板50上形成多个第一有机电致发光单元70之前，在第一衬底基板50上形成像素电路层。具体地，像素电路层可以包括薄膜晶体管(Thin Film Transistor，简称TFT)以及充电层。在此之后，可以在像素电路层上形成多个第一有机电致发光单元70。
假设在所形成的显示面板中，第一衬底基板50靠近显示侧。在这样的情况下，以上步骤S100还可以包括：在第一衬底基板50上形成多个第一有机电致发光单元70之前，在第一衬底基板70上形成黑矩阵图案902和彩膜层90。作为示例，彩膜层90可以包括多个色阻单元901。此外，可替换地，上述步骤S100还可以包括：第一衬底基板50上形成多个第一有机电致发光单元70之后，在所述多个第一有机电致发光单元70上形成第一平坦层701。
S101、在第二衬底基板60上形成多个第二有机电致发光单元80。
此处，在第二衬底基板60上形成多个第二有机电致发光单元80的过程与在第一衬底基板50上形成多个第一有机电致发光单元70的过程类似，并且此处不再赘述。
另外，还需要说明的是，步骤S100可以在步骤S101之前、之后或者同时执行。
作为可选示例，上述制备方法还可以包括：在第二衬底基板60上形成多个第二有机电致发光单元80之前，在第二衬底基板60上形 成像素电路层。具体地，像素电路层可以包括薄膜晶体管(Thin Film Transistor，简称TFT)以及充电层。在此之后，在像素电路层上形成多个第二有机电致发光单元80。
假设在所形成的显示面板中，第一衬底基板50靠近显示侧。在这样的情况下，上述步骤S101还可以包括：在第二衬底基板60上形成多个第二有机电致发光单元80之前，在第二衬底基板60上形成反光层100。此外，在其它可选实施例中，上述步骤S101还可以包括：在第二衬底基板60上形成多个第二有机电致发光单元80之后，在第二有机电致发光单元80上形成第二平坦层801，并且在第二平坦层801上与像素界定区域正对的位置处形成隔垫物110。
S102、将所述第一衬底基板和所述第二衬底基板对盒，使得每一个第一有机电致发光单元70在所述第二衬底基板上的正投影与一个对应的第二有机电致发光单元80至少部分重叠。这意味着，所述多个第一有机电致发光单元70与所述多个第二有机电致发光单元80一一对应地设置。
具体地，通过一一对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出的光的颜色可以根据实际应用灵活选择。例如，由第一有机电致发光单元70和第二有机电致发光单元80发出的光的颜色可以相同。可替换地，由第一有机电致发光单元70和第二有机电致发光单元80发出的光的颜色也可以不相同。此外，第一有机电致发光单元70和第二有机电致发光单元80可以发出三原色光中的任一种。当然，在其它实施例中，第一有机电致发光单元70和第二有机电致发光单元80也可以发白光，或者除三原色光以外的其它颜色的光。
进一步地，由对应设置的第一有机电致发光单元70和第二有机电致发光单元80发出的光的亮度可以相同，也可以不同。
此处，需要说明的是，在将第一基板和第二基板对盒时，可以在第一衬底基板50的边缘或第二衬底基板60的边缘涂布封框胶(Seal)，以将第一基板和第二基板粘合。
此外，需要指出的是，虽然在以上实施例中示出了有机电致发光显示面板包括彼此相对设置的第一衬底基板和第二衬底基板，但是在可替换的实施例中，第一衬底基板和第二衬底基板中的任一个可以利 用其它另外的膜层来取代。作为示例，在可选的实施例中，有机电致发光显示面板仅包括一个衬底基板，其中，第一有机电致发光单元和第二有机电致发光单元层叠设置在这个唯一的衬底基板上。在这样的情况下，进一步可选地，有机电致发光显示面板还可以包括设置在第二有机电致发光单元远离第一有机电致发光单元的一侧上的其它膜层，例如，反射层等。这意味着，可替换地，在以上任一个实施例中描述的有机电致发光显示面板中，第二衬底基板可以被移除，并且进一步地，替换为任何其它适当的膜层。本公开旨在涵盖所有这些可替换的等同技术方案。
本公开的实施例提供一种用于有机电致发光显示面板的制备方法。借助于这样的制备方法所形成的有机电致发光显示面板可以包括：形成在第一衬底基板50上的多个第一有机电致发光单元70；以及形成在第二衬底基板60上的多个第二有机电致发光单元80。在这样的情况下，第一有机电致发光单元70和第二有机电致发光单元80可以同时发光。由此，相对于传统方案中有机电致发光显示面板的每个亚像素单元只有一个有机电致发光单元的情况，在本公开的实施例中，每个亚像素单元均有两个有机电致发光单元。因此，借助于在本公开的实施例中提供的有机电致发光显示面板，可以提高有机电致发光显示面板的显示亮度，使得有机电致发光显示面板的发光亮度的最大值更大，从而有利于大尺寸显示面板的应用以及远距离的观察。此外，在本公开的实施例中，第一有机电致发光单元70和第二有机电致发光单元80分别形成在两个衬底基板上。一方面，这避免了第一有机电致发光单元70中的电极和第二有机电致发光单元80中的电极相互影响，从而影响显示质量，同时另一方面，这还避免了第一有机电致发光单元70和第二有机电致发光单元80在制作时相互影响，从而简化制作工艺。
以上所述，仅为本公开的具体实施方式，但是本公开的保护范围并不局限于此。任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可以容易设想到的各种变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种有机电致发光显示面板，包括：
    相对设置的第一衬底基板和第二衬底基板；
    彼此间隔地设置在所述第一衬底基板面向所述第二衬底基板的一侧上的多个第一有机电致发光单元；以及
    彼此间隔地设置在所述第二衬底基板面向所述第一衬底基板的一侧上的多个第二有机电致发光单元，其中
    所述多个第一有机电致发光单元与所述多个第二有机电致发光单元在垂直于所述第一衬底基板的延伸面的方向上间隔开，并且
    每一个第一有机电致发光单元在所述第二衬底基板上的正投影与一个对应的第二有机电致发光单元至少部分重叠。
  2. 根据权利要求1所述的有机电致发光显示面板，其中
    与一个第一有机电致发光单元在所述第二衬底基板上的正投影至少部分重叠的第二有机电致发光单元配置为发射与所述一个第一有机电致发光单元相同颜色的光。
  3. 根据权利要求1所述的有机电致发光显示面板，其中
    所述第一有机电致发光单元设置为比所述第二有机电致发光单元更靠近所述有机电致发光显示面板的出光面。
  4. 根据权利要求3所述的有机电致发光显示面板，其中
    所述第一有机电致发光单元和所述第二有机电致发光单元中的至少一个配置为发射白光，并且
    所述有机电致发光显示面板还包括：设置在所述第一有机电致发光单元远离所述第二有机电致发光单元的一侧上的彩膜层。
  5. 根据权利要求3所述的有机电致发光显示面板，还包括：
    设置在所述第二有机电致发光单元远离所述第一有机电致发光单元的一侧上的反光层。
  6. 根据权利要求3所述的有机电致发光显示面板，其中
    每一个第二有机电致发光单元包括层叠设置在所述第二衬底基板上的第一电极、功能层以及第二电极，所述第一电极由反光材料制成。
  7. 根据权利要求1所述的有机电致发光显示面板，还包括：
    设置在所述第一有机电致发光单元靠近所述第二有机电致发光单 元的一侧上的第一平坦层；
    设置在所述第二有机电致发光单元靠近所述第一有机电致发光单元的一侧上的第二平坦层；以及
    设置在所述第一平坦层和所述第二平坦层之间的隔垫物。
  8. 根据权利要求1-7中任一项所述的有机电致发光显示面板，还包括驱动模块，其中
    所述驱动模块与所述第一有机电致发光单元和所述第二有机电致发光单元相连，并且配置用于驱动所述第一有机电致发光单元和所述第二有机电致发光单元发光。
  9. 根据权利要求8所述的有机电致发光显示面板，其中
    所述驱动模块配置用于同时驱动所述第一有机电致发光单元和所述第二有机电致发光单元发光。
  10. 根据权利要求8所述的有机电致发光显示面板，其中
    所述驱动模块包括第一子驱动模块和第二子驱动模块，其中
    所述第一子驱动模块与所述第一有机电致发光单元相连，并且配置用于驱动所述第一有机电致发光单元发光，以及
    所述第二子驱动模块与所述第二有机电致发光单元相连，并且配置用于驱动所述第二有机电致发光单元发光。
  11. 根据权利要求10所述的有机电致发光显示面板，还包括：
    设置在所述第一衬底基板上的第一信号线；以及
    设置在所述第二衬底基板上的第二信号线，其中
    所述第一子驱动模块设置在所述第一衬底基板上，并且与所述第一信号线相连；以及
    所述第二子驱动模块设置在所述第二衬底基板上，并且与所述第二信号线相连。
  12. 根据权利要求10所述的有机电致发光显示面板，还包括：
    设置在所述第一衬底基板上的第一信号线；以及
    设置在所述第二衬底基板上的第二信号线和第三信号线，所述第一信号线与所述第三信号线电连接，其中
    所述第一子驱动模块和所述第二子驱动模块位于所述第二衬底基板上，所述第一子驱动模块与所述第三信号线相连，并且所述第二子驱动模块与所述第二信号线相连。
  13. 根据权利要求8所述的有机电致发光显示面板，还包括：
    设置在所述第一衬底基板上的第一数据信号线和第一驱动信号线；以及
    设置在所述第二衬底基板上的第二数据信号线、第三数据信号线和第二驱动信号线，所述第一数据信号线通过各向异性导电膜与所述第三数据信号线电连接，并且所述第一驱动信号线通过各向异性导电膜与所述第二驱动信号线电连接，其中
    所述驱动模块包括位于第二衬底基板上的第一源驱动模块、第二源驱动模块和阵列基板行驱动单元，所述第一源驱动模块与所述第三数据信号线电连接，所述第二源驱动模块与所述第二数据信号线电连接，并且所述阵列基板行驱动单元与所述第二驱动信号线电连接。
  14. 一种用于有机电致发光显示面板的制备方法，包括：
    在第一衬底基板上形成多个第一有机电致发光单元；
    在第二衬底基板上形成多个第二有机电致发光单元；以及
    将所述第一衬底基板和所述第二衬底基板对盒，使得每一个第一有机电致发光单元在所述第二衬底基板上的正投影与一个对应的第二有机电致发光单元至少部分重叠。
  15. 一种有机电致发光显示面板，包括：
    衬底基板；
    彼此间隔地设置在所述衬底基板上的多个第一有机电致发光单元；以及
    彼此间隔地设置在所述多个第一有机电致发光单元远离所述衬底基板的一侧上的多个第二有机电致发光单元，其中
    每一个第一有机电致发光单元在所述衬底基板上的正投影与一个对应的第二有机电致发光单元在所述衬底基板上的正投影至少部分重叠。
  16. 根据权利要求15所述的有机电致发光显示面板，其中
    与一个第一有机电致发光单元在所述第二衬底基板上的正投影至少部分重叠的第二有机电致发光单元配置为发射与所述一个第一有机电致发光单元相同颜色的光。
  17. 根据权利要求15所述的有机电致发光显示面板，其中
    所述第一有机电致发光单元设置为比所述第二有机电致发光单元 更靠近所述有机电致发光显示面板的出光面。
  18. 根据权利要求17所述的有机电致发光显示面板，其中
    所述第一有机电致发光单元和所述第二有机电致发光单元中的至少一个配置为发射白光，并且
    所述有机电致发光显示面板还包括：设置在所述第一有机电致发光单元远离所述第二有机电致发光单元的一侧上的彩膜层。
  19. 根据权利要求15所述的有机电致发光显示面板，还包括：
    设置在所述第一有机电致发光单元靠近所述第二有机电致发光单元的一侧上的第一平坦层；
    设置在所述第二有机电致发光单元靠近所述第一有机电致发光单元的一侧上的第二平坦层；以及
    设置在所述第一平坦层和所述第二平坦层之间的隔垫物。
  20. 根据权利要求15所述的有机电致发光显示面板，还包括驱动模块，其中
    所述驱动模块与所述第一有机电致发光单元和所述第二有机电致发光单元相连，并且配置用于驱动所述第一有机电致发光单元和所述第二有机电致发光单元发光。
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