WO2024259745A1 - 显示模组及显示装置 - Google Patents

显示模组及显示装置 Download PDF

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Publication number
WO2024259745A1
WO2024259745A1 PCT/CN2023/104260 CN2023104260W WO2024259745A1 WO 2024259745 A1 WO2024259745 A1 WO 2024259745A1 CN 2023104260 W CN2023104260 W CN 2023104260W WO 2024259745 A1 WO2024259745 A1 WO 2024259745A1
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WO
WIPO (PCT)
Prior art keywords
light
sub
emitting device
common electrode
electrode
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/CN2023/104260
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English (en)
French (fr)
Inventor
周威龙
孙亮
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
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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 DE112023000090.5T priority Critical patent/DE112023000090T5/de
Priority to US18/546,298 priority patent/US20260123147A1/en
Publication of WO2024259745A1 publication Critical patent/WO2024259745A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
    • H10H29/80—Constructional details
    • H10H29/962—Stacked configurations of light-emitting semiconductor components or devices, the components or devices emitting at different wavelengths
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H29/00—Integrated devices, or assemblies of multiple devices, comprising at least one light-emitting semiconductor element covered by group H10H20/00
    • H10H29/30—Active-matrix LED displays
    • H10H29/49—Interconnections, e.g. wiring lines or terminals

Definitions

  • the present application relates to the field of display technology, and in particular to a display module and a display device.
  • Inorganic light-emitting diodes are solid-state light sources with high brightness and high luminous efficiency. In the field of display technology, they are mainly used as backlight sources for liquid crystal displays and outdoor full-color displays. Compared with liquid crystal displays and organic light-emitting diode displays, inorganic light-emitting diode displays have great advantages in low power consumption, fast response, and high light efficiency. They have great commercial value in technical fields such as high-resolution displays, virtual reality, and augmented reality.
  • the embodiments of the present application provide a display module and a display device, which can avoid the setting of steps, reduce the process difficulty of the common electrode, increase the yield rate of the common electrode, and improve the device performance.
  • the embodiment of the present application provides a display module, which includes a substrate and a light-emitting functional layer disposed on the substrate, wherein the light-emitting functional layer includes:
  • each light emitting device comprising at least two sub-light emitting devices arranged along a first direction perpendicular to the substrate;
  • a plurality of independent electrodes connected to each of the sub-light emitting devices
  • At least two common electrodes are arranged between adjacent light-emitting devices, and the number of the common electrodes is greater than or equal to the number of the sub-light-emitting devices in the light-emitting device;
  • the common electrode is connected to the sub-light emitting devices along the first direction, the common electrode and the independent electrode are located on different sides of the sub-light emitting devices, and each of the sub-light emitting devices is electrically connected to the common electrode.
  • the light emitting device includes a first sub-light emitting device and a second sub-light emitting device arranged along the first direction, the plurality of independent electrodes include a first independent electrode and a second independent electrode, and at least two of the common electrodes include a first common electrode and a second common electrode;
  • the first independent electrode and the first common electrode are connected to different sides of the first sub-light emitting device, and the second independent electrode and the second common electrode are connected to different sides of the second sub-light emitting device.
  • the light-emitting device also includes a third sub-light-emitting device located on one side of the first sub-light-emitting device or on one side of the second sub-light-emitting device along the first direction
  • the multiple independent electrodes include a third independent electrode connected to the third sub-light-emitting device
  • the multiple common electrodes include a third common electrode connected to the third sub-light-emitting device along the first direction
  • the third common electrode is connected to the first common electrode and the second common electrode.
  • the number of the first common electrodes, the number of the second common electrodes, and the number of the third common electrodes are all greater than or equal to 1.
  • the plurality of light-emitting devices are arranged along a second direction and a third direction parallel to the substrate, the first common electrode extends along the second direction and/or the third direction, the second common electrode extends along the second direction and/or the third direction, and the third common electrode extends along the second direction and/or the third direction.
  • the first sub-light emitting device is located between the substrate and the second sub-light emitting device
  • the third sub-light emitting device is located on a side of the second sub-light emitting device away from the first sub-light emitting device
  • the thickness of the first common electrode along the first direction is greater than the thickness of the second common electrode along the first direction
  • the thickness of the third common electrode along the first direction is less than the thickness of the second common electrode along the first direction.
  • the substrate includes a driving circuit unit
  • the light-emitting functional layer further includes a first bonding layer disposed between the substrate and the first sub-light-emitting device, a second bonding layer disposed between the first sub-light-emitting device and the second sub-light-emitting device, a third bonding layer disposed between the second sub-light-emitting device and the third sub-light-emitting device, and a covering layer disposed on a side of the third sub-light-emitting device away from the second sub-light-emitting device;
  • the first common electrode passes through the covering layer, the third bonding layer and the second bonding layer along the first direction and is connected to the first sub-light-emitting device
  • the second common electrode passes through the covering layer and the third bonding layer along the first direction and is connected to the second sub-light-emitting device
  • the third common electrode passes through the covering layer along the first direction and is connected to the third sub-light-emitting device
  • the first common electrode, the second common electrode and the third common electrode are all connected to the driving circuit unit.
  • the light-emitting functional layer further includes a first connector connected between adjacent first sub-light-emitting devices, a second connector connected between adjacent second sub-light-emitting devices, and a third connector connected between adjacent third sub-light-emitting devices, and the first common electrode is connected to the first connector, the second common electrode is connected to the second connector, and the third common electrode is connected to the third connector;
  • the first connecting member is connected between any two adjacent first sub-light emitting devices
  • the second connecting member is connected between some of the second sub-light emitting devices
  • the third connecting member is connected between some of the third sub-light emitting devices.
  • the light-emitting functional layer includes a plurality of first blocks and a plurality of second blocks
  • the first block includes a plurality of the second sub-light-emitting devices and the second connecting members connected between the second sub-light-emitting devices
  • the second block includes a plurality of the third sub-light-emitting devices and the third connecting members connected between the third sub-light-emitting devices
  • the first common electrode is located between adjacent first blocks and between adjacent second blocks, and the second common electrode is located between adjacent second blocks.
  • the first bonding layer is reused as a first bottom electrode
  • the light-emitting functional layer further includes a second bottom electrode disposed between the second bonding layer and the second sub-light-emitting device, and a third bottom electrode disposed between the third bonding layer and the third sub-light-emitting device, and the first sub-light-emitting device is disposed on the first bottom electrode, the second sub-light-emitting device is disposed on the second bottom electrode, and the third sub-light-emitting device is disposed on the third bottom electrode;
  • the first common electrode is connected to the first bottom electrode
  • the second common electrode is connected to the second bottom electrode
  • the third common electrode is connected to the third bottom electrode
  • the light emitting color of the first sub-light emitting device is red
  • the light emitting color of the second sub-light emitting device is green
  • the light emitting color of the third sub-light emitting device is blue
  • the second bonding layer includes a first Bragg reflection layer to allow red light to pass through and reflect blue light.
  • the third bonding layer includes a second Bragg reflection layer to allow red light and green light to pass through and reflect blue light.
  • the orthographic projection width of the first common electrode on the substrate is greater than the orthographic projection width of the second common electrode on the substrate, and the orthographic projection width of the second common electrode on the substrate is greater than the orthographic projection width of the third common electrode on the substrate.
  • the orthographic projection of the second sub-light emitting device on the substrate is located within the orthographic projection of the first sub-light emitting device on the substrate, or the orthographic projection of the second sub-light emitting device on the substrate coincides with the orthographic projection of the first sub-light emitting device on the substrate;
  • the orthographic projection of the third sub-light emitting device on the substrate is located within the orthographic projection of the first sub-light emitting device on the substrate, or the orthographic projection of the third sub-light emitting device on the substrate coincides with the orthographic projection of the first sub-light emitting device on the substrate.
  • the common electrode is disposed on at least one side of the sub-light emitting device.
  • an embodiment of the present application further provides a display device, the display device comprising a device body and a display module, and the display module and the device body are combined into one body;
  • the display module includes a substrate and a light-emitting functional layer disposed on the substrate, wherein the light-emitting functional layer includes:
  • each light emitting device comprising at least two sub-light emitting devices arranged along a first direction perpendicular to the substrate;
  • a plurality of independent electrodes connected to each of the sub-light emitting devices
  • At least two common electrodes are arranged between adjacent light-emitting devices, and the number of the common electrodes is greater than or equal to the number of the sub-light-emitting devices in the light-emitting device;
  • the common electrode is connected to the sub-light emitting devices along the first direction, the common electrode and the independent electrode are located on different sides of the sub-light emitting devices, and each of the sub-light emitting devices is electrically connected to the common electrode.
  • the light emitting device includes a first sub-light emitting device and a second sub-light emitting device arranged along the first direction, the plurality of independent electrodes include a first independent electrode and a second independent electrode, and at least two of the common electrodes include a first common electrode and a second common electrode;
  • the first independent electrode and the first common electrode are connected to different sides of the first sub-light emitting device, and the second independent electrode and the second common electrode are connected to different sides of the second sub-light emitting device.
  • the light-emitting device also includes a third sub-light-emitting device located on one side of the first sub-light-emitting device or on one side of the second sub-light-emitting device along the first direction
  • the multiple independent electrodes include a third independent electrode connected to the third sub-light-emitting device
  • the multiple common electrodes include a third common electrode connected to the third sub-light-emitting device along the first direction
  • the third common electrode is connected to the first common electrode and the second common electrode.
  • the present application achieves connection between the common electrode and the sub-light-emitting device by setting the common electrode between adjacent light-emitting devices and connecting the common electrode to the sub-light-emitting device along a first direction, thereby avoiding the setting of a step area in the light-emitting device, reducing the process difficulty, and improving the yield rate of the display module and the performance of the display module; in addition, since the present application does not require the formation of a step at the side wall of the light-emitting device, nor does it require a gap to be left at the step to keep a distance from the common electrode, and the common electrode and the independent electrode are located on different sides of the sub-light-emitting device, the present application can effectively increase the light-emitting area of the light-emitting device and improve the aperture ratio.
  • FIG1 is a schematic diagram of a structure of a display module in the related art
  • FIG2 is a schematic diagram of a planar structure of a display module provided in an embodiment of the present application.
  • FIG3 is an enlarged structural diagram of point a in FIG2 of the embodiment of the present application.
  • FIG4 is a schematic diagram of a cross-sectional structure taken along line AA in FIG3 of the embodiment of the present application;
  • FIG5 is a schematic diagram of a cross-sectional structure taken along line BB in FIG3 of the embodiment of the present application;
  • FIG6 is a schematic diagram of a cross-sectional structure taken along line CC in FIG3 of the embodiment of the present application;
  • FIG7 is a schematic diagram of a cross-sectional structure taken along line DD in FIG3 of the embodiment of the present application;
  • FIG8 is an enlarged schematic diagram of the structure at point b in FIG2 of the embodiment of the present application.
  • FIG9 is another schematic diagram of a planar structure of a display module provided in an embodiment of the present application.
  • FIG10 is another schematic diagram of a planar structure of a display module provided in an embodiment of the present application.
  • FIG11 is another schematic diagram of a planar structure of a display module provided in an embodiment of the present application.
  • FIG12 is another schematic diagram of a cross-sectional structure taken along line AA in FIG3 of the embodiment of the present application;
  • FIG. 14 is another schematic diagram of the planar structure of the display module provided in an embodiment of the present application.
  • the word “comprise” and its variations like “include” or “contain” will be understood to imply the inclusion of the discussed elements, but not necessarily the exclusion of other elements.
  • the word “on" refers to placement above or below an object part, and does not necessarily mean placement on the upper side of an object part based on the direction of gravity.
  • the x-axis, y-axis, and z-axis are not limited to the three axes of the rectangular coordinate system and can be interpreted in a broader sense.
  • the x-axis, y-axis, and z-axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other.
  • a first LED 2, a second LED 3 and a third LED 4 are often stacked in sequence on a substrate 1, and each LED needs to be connected to a corresponding independent electrode and a common common electrode 8.
  • the first LED 2 is connected to a first independent electrode 5
  • the second LED 3 is connected to a second independent electrode 6
  • the third LED 4 is connected to a third independent electrode 7.
  • the first LED 2, the second LED 3 and the third LED 4 also need to be connected to the common electrode 8 to achieve light emission.
  • the common electrode 8 is located on the side of the three stacked LEDs, and a step needs to be etched at each LED to accommodate the common electrode 8, and at the same time, a gap 9 needs to be left between the LED and the common electrode 8 to avoid interference and interference. If the size of the step is too large, the arrangement space, light-emitting area and aperture ratio of the LED will be reduced. If the size of the step is too small, the process difficulty of the common electrode 8 will be increased and the yield rate of the common electrode 8 will be reduced. Therefore, the display module shown in Figure 1 has large process restrictions and is difficult to meet the development of display technology.
  • an embodiment of the present application provides a display module, which includes a substrate 10 and a light-emitting functional layer disposed on the substrate 10 , wherein the light-emitting functional layer includes a plurality of light-emitting devices 20 , a plurality of independent electrodes 30 and at least two common electrodes 40 .
  • the light-emitting device 20 includes at least two sub-light-emitting devices arranged along a first direction Y perpendicular to the substrate 10; a plurality of independent electrodes 30 are connected to each sub-light-emitting device; at least two common electrodes 40 are arranged between adjacent light-emitting devices 20, and the number of common electrodes 40 is greater than or equal to the number of sub-light-emitting devices in the light-emitting device 20.
  • the common electrode 40 is connected to the sub-light emitting devices along the first direction Y, the common electrode 40 and the independent electrode 30 are located on different sides of the sub-light emitting devices, and each sub-light emitting device is electrically connected to the common electrode 40 .
  • the embodiment of the present application sets the common electrode 40 between adjacent light-emitting devices 20, and at the same time, the common electrode 40 is connected to the sub-light-emitting device along the first direction Y, thereby realizing the connection between the common electrode 40 and the sub-light-emitting device, avoiding the setting of the step area in the light-emitting device 20, reducing the process difficulty, and can improve the yield rate of the display module and improve the performance of the display module; in addition, since in the embodiment of the present application, it is not necessary to form a step at the side wall of the light-emitting device 20, nor is it necessary to leave a gap at the step to keep a distance from the common electrode 40, and the common electrode 40 and the independent electrode 30 are located on different sides of the sub-light-emitting device, the embodiment of the present application can effectively increase the light-emitting area of the light-emitting device 20 and improve the aperture ratio.
  • the display module provided in the embodiment of the present application includes a substrate 10 and a light-emitting functional layer disposed on the substrate 10 .
  • the light-emitting functional layer includes a plurality of light-emitting devices 20 arranged on a substrate 10, wherein a driving circuit unit (not shown in the figure) is also arranged on the substrate 10, and the driving circuit unit may include a thin film transistor device or a CMOS tube device, and a signal line, and the light-emitting device 20 is connected to the driving circuit unit to realize the transmission of electrical signals and the light-emitting control process of the light-emitting device 20.
  • the number of sub-light-emitting devices in the light-emitting device 20 is greater than or equal to two, and the number of common electrodes 40 is greater than or equal to the number of sub-light-emitting devices in one light-emitting device 20. For example, if the number of sub-light-emitting devices in one light-emitting device 20 is two, the number of common electrodes 40 needs to be greater than or equal to 2, or if the number of sub-light-emitting devices in one light-emitting device 20 is three, the number of common electrodes 40 needs to be greater than or equal to 3.
  • the light-emitting device 20 includes a first sub-light-emitting device 21, a second sub-light-emitting device 22, and a third sub-light-emitting device 23 arranged in sequence along a first direction Y perpendicular to the substrate 10, that is, the first sub-light-emitting device 21 is located between the second sub-light-emitting device 22 and the substrate 10, and the third sub-light-emitting device 23 is located on a side of the second sub-light-emitting device 22 away from the first sub-light-emitting device 21.
  • the light-emitting functional layer also includes a first bonding layer 51 arranged between the substrate 10 and the first sub-light-emitting device 21, a second bonding layer 52 arranged between the first sub-light-emitting device 21 and the second sub-light-emitting device 22, a third bonding layer 53 arranged between the second sub-light-emitting device 22 and the third sub-light-emitting device 23, and a covering layer 54 arranged on the side of the third sub-light-emitting device 23 away from the second sub-light-emitting device 22; wherein the first sub-light-emitting device 21 is arranged on the first bonding layer 51 and connected to the substrate 10 through the first bonding layer 51, the second sub-light-emitting device 22 is arranged on the second bonding layer 52 and connected to the side of the first sub-light-emitting device 21 away from the substrate 10 through the second bonding layer 52, and the third sub-light-emitting device 23 is arranged on the third bonding layer 53 and connected to the side of
  • the material of the first bonding layer 51 may include a metal material, and the metal material has a reflective effect, so that while playing the role of bonding the first sub-light-emitting device 21, it can also reflect the light emitted by the light-emitting device 20 to the side of the substrate 10 to improve the light-emitting efficiency of the light-emitting device 20;
  • the material of the second bonding layer 52, the third bonding layer 53 and the covering layer 54 may include a silicon oxide material, so that the second bonding layer 52 and the third bonding layer 53 are transparent film layers, which will not affect the light-emitting effect of the light-emitting device 20 while playing the role of bonding the second sub-light-emitting device 22 and the third sub-light-emitting device 23.
  • the substrate 10 may be a silicon material substrate, and the driving circuit unit may be arranged on the substrate 10.
  • the first sub-light-emitting device 21 may be directly connected to the substrate 10 through the first bonding layer 51; in addition, in another embodiment, the display module may also include a driving circuit layer arranged between the substrate 10 and the light-emitting functional layer, and the driving circuit unit is arranged in the driving circuit layer. In this case, the first sub-light-emitting device 21 may be connected to the driving circuit layer through the first bonding layer 51.
  • the light-emitting functional layer further includes an independent electrode 30 and a common electrode 40 for connecting the light-emitting device 20 with the driving circuit unit to realize signal transmission.
  • the independent electrode 30 includes a first independent electrode 31 connected to the first sub-light-emitting device 21, a second independent electrode 32 connected to the second sub-light-emitting device 22, and a third independent electrode 33 connected to the third sub-light-emitting device 23; and the first independent electrode 31, the second independent electrode 32 and the third independent electrode 33 can be respectively connected to different switching tubes in the driving circuit unit, such as thin film transistors or CMOS tubes, to achieve independent control of the first sub-light-emitting device 21, the second sub-light-emitting device 22 and the third sub-light-emitting device 23.
  • the common electrode 40 is arranged between adjacent light-emitting devices 20, and includes a first common electrode 41, a second common electrode 42 and a third common electrode 43 extending in a direction parallel to the substrate 10, and the first common electrode 41 is connected to the first sub-light-emitting device 21 along the first direction Y, the second common electrode 42 is connected to the second sub-light-emitting device 22 along the first direction Y, and the third common electrode 43 is connected to the third sub-light-emitting device 23 along the first direction Y, and the first common electrode 41, the second common electrode 42 and the third common electrode 43 are interconnected, that is, the first common electrode 41, the second common electrode 42 and the third common electrode 43 can be integrally formed.
  • the first common electrode 41, the second common electrode 42 and the third common electrode 43 are respectively connected to the first sub-light-emitting device 21, the second sub-light-emitting device 22 and the third sub-light-emitting device 23 along the first direction Y, thereby avoiding the setting of steps and realizing the connection between the first sub-light-emitting device 21, the second sub-light-emitting device 22 and the third sub-light-emitting device 23 and the common electrode 40, reducing the process difficulty, and can improve the yield rate of the display module and improve the performance of the display module; in addition, since in the embodiment of the present application, it is not necessary to form a step at the side wall of the light-emitting device 20, nor is it necessary to leave a gap at the step to keep a distance from the common electrode 40, therefore, the embodiment of the present application can effectively increase the light-emitting area of the light-emitting device 20 and improve the aperture ratio.
  • the embodiment of the present application can further increase the light-emitting area of the light-emitting device 20 and improve the aperture ratio.
  • a plurality of light emitting devices 20 are arranged in an array along a second direction X1 and a third direction X2 parallel to the substrate 10 , as shown in FIG. 2 .
  • the first common electrode 41 is located between adjacent light-emitting devices 20 and can extend along the second direction X1 and/or the third direction X2
  • the second common electrode 42 is located between adjacent light-emitting devices 20 and can extend along the second direction X1 and/or the third direction X2
  • the third common electrode 43 is located between adjacent light-emitting devices 20 and can extend along the second direction X1 and/or the third direction X2.
  • first common electrode 41, the second common electrode 42 and the third common electrode 43 are respectively located between different and adjacent light-emitting devices 20, and only one of the first common electrode 41, the second common electrode 42 and the third common electrode 43 is arranged between the light-emitting devices 20 adjacent along the second direction X1. Similarly, only one of the first common electrode 41, the second common electrode 42 and the third common electrode 43 is arranged between the light-emitting devices 20 adjacent along the third direction X2.
  • Figure 2 includes a plurality of first common electrodes 41 extending along the second direction X1 and along the third direction X2, a plurality of second common electrodes 42 extending along the second direction X1, and a plurality of third common electrodes 43 extending along the third direction X2; further, in the third direction X2, the second common electrodes 42 are located between adjacent first common electrodes 41, and in the second direction X1, the third common electrodes 43 are located between adjacent first common electrodes 41.
  • At least one light emitting device 20 arranged along the third direction X2 is arranged between the adjacent second common electrodes 42 and the first common electrodes 41, and along the second direction X1, at least one light emitting device 20 arranged along the second direction X1 is arranged between the adjacent third common electrodes 43 and the first common electrodes 41.
  • two light emitting devices 20 arranged along the third direction X2 are arranged between the adjacent second common electrodes 42 and the first common electrodes 41
  • two light emitting devices 20 arranged along the second direction X1 are arranged between the adjacent third common electrodes 43 and the first common electrodes 41.
  • the first common electrode 41, the second common electrode 42 and the third common electrode 43 form a repeating unit as shown in FIG. 8, and each repeating unit includes four light emitting devices 20.
  • the light-emitting device 20 includes a first side opposite to the common electrode 40 and other second sides, and the arrangement space at the second side of the light-emitting device 20 is larger than the arrangement space at the first side.
  • the independent electrode 30 is arranged on the second side of the light-emitting device 20, so that the independent electrode 30 is arranged on the side of the light-emitting device 20 away from the common electrode 40, which can leave sufficient space for the arrangement of the independent electrode 30 and avoid interference and interference between the independent electrode 30 and the common electrode 40.
  • each light-emitting device 20 may include two first sides and two second sides, that is, a common electrode 40 is provided on at least one side of each light-emitting device 20, and multiple common electrodes 40 can be connected to form a mesh structure, and the light-emitting device 20 or the above-mentioned repeating unit can be located in the mesh of the mesh structure, thereby reducing the resistance of the common electrode 40 and improving the voltage drop phenomenon of the common electrode 40.
  • each sub-light-emitting device 20 when a common electrode 40 is provided on at least one side of each light-emitting device 20, the number of sides of the light-emitting device 20 needs to be greater than or equal to the number of sub-light-emitting devices in the light-emitting device 20.
  • the shape of each sub-light-emitting device or the light-emitting device 20 can be a triangle, a quadrilateral or other polygon.
  • the shape of the light-emitting device 20 is a quadrilateral.
  • the light-emitting device 20 can also be a triangle, a plurality of light-emitting devices 20 are arranged in an array, and two sides of each light-emitting device 20 are adjacent to the common electrode 40, and an independent electrode 30 (not shown in the figure) can be set on the other side of the light-emitting device 20, wherein the arrangement direction of each common electrode 40 can be parallel to the direction of the side of the adjacent light-emitting device 20, the first common electrode 41 extends along the fourth direction X3 and is arranged opposite to the bottom side of the triangular light-emitting device 20, and a first common electrode 41 is arranged between any two adjacent rows of light-emitting devices 20; the second common electrode 42 and the third common electrode 43 both extend along the fifth direction X4 and are arranged opposite to the side of the triangular light-emitting device 20.
  • the light-emitting device 20 is also triangular, and a plurality of light-emitting devices 20 are arranged in an array, and two sides of each light-emitting device 20 are adjacent to the common electrode 40, and an independent electrode 30 (not shown in the figure) can be provided on the other side of the light-emitting device 20, wherein the arrangement direction of each common electrode 40 can be parallel to the direction of the side of the adjacent light-emitting device 20, the first common electrode 41 extends along the fourth direction X3 and is arranged opposite to the bottom side of the triangular light-emitting device 20, and a first common electrode 41 is arranged every two rows of light-emitting devices 20, that is, two rows of light-emitting devices 20 are arranged between two adjacent first common electrodes 41; the second common electrode 42 and the third common electrode 43 both extend along the fifth direction X4 and are arranged opposite to the side of the triangular light-emitting device 20.
  • the light emitting device 20 is also triangular, and a plurality of light emitting devices 20 are arranged in an array, and two sides of each light emitting device 20 are adjacent to the common electrode 40, and an independent electrode 30 (not shown in the figure) can be provided on the other side of the light emitting device 20, wherein the arrangement direction of each common electrode 40 can be parallel to the direction of the side of the light emitting device 20 adjacent to it, and the first common electrode 41 extends along the fourth direction X3 and is arranged opposite to the bottom side of the triangular light emitting device 20, and any two adjacent rows of light emitting devices 20 are provided with a first common electrode 41.
  • the second common electrode 42 and the third common electrode 43 are both arranged opposite to the side of the triangular light emitting device 20.
  • the second common electrode 42 includes a first segment 421 extending along the fifth direction X4 and a second segment 422 extending along the sixth direction X5, and the first segment 421 and the second segment 422 are located between adjacent light emitting devices 20 and arranged alternately.
  • the third common electrode 43 includes a third segment 431 extending along the fifth direction X4 and a fourth segment 432 extending along the sixth direction X5, and the third segment 431 and the fourth segment 432 are located between adjacent light emitting devices 20 and arranged alternately.
  • Figure 4 is a schematic diagram of a cross-sectional structure taken along line AA in Figure 3
  • Figure 5 is a schematic diagram of a cross-sectional structure taken along line BB in Figure 3
  • Figure 6 is a schematic diagram of a cross-sectional structure taken along line CC in Figure 3
  • Figure 7 is a schematic diagram of a cross-sectional structure taken along line DD in Figure 3.
  • the independent electrode 30 is at least arranged on the upper surface of each sub-light-emitting device.
  • the first independent electrode 31 is arranged on the upper surface of the first sub-light-emitting device 21 and is connected to the driving circuit unit in the substrate 10 through the first bonding layer 51;
  • the second independent electrode 32 is arranged on the upper surface of the second sub-light-emitting device 22 and is connected to the driving circuit unit through the second bonding layer 52 and the first bonding layer 51, as shown in Figures 5 and 7;
  • the third independent electrode 33 is arranged on the upper surface of the third sub-light-emitting device 23 and is connected to the driving circuit unit through the third bonding layer 53, the second bonding layer 52 and the first bonding layer 51, as shown in Figure 5.
  • the material of the first independent electrode 31 , the second independent electrode 32 , and the third independent electrode 33 may include a transparent conductive material, such as an ITO material.
  • first common electrode 41 passes through the covering layer 54, the third bonding layer 53, and the second bonding layer 52 along the first direction Y and is connected to the first sub-light emitting device 21, as shown in FIGS. 4 to 7;
  • second common electrode 42 passes through the covering layer 54 and the third bonding layer 53 along the first direction Y and is connected to the second sub-light emitting device 22, as shown in FIGS. 6 and 7;
  • third common electrode 43 passes through the covering layer 54 along the first direction Y and is connected to the third sub-light emitting device 23, as shown in FIGS. 4 and 5.
  • the thickness of the first common electrode 41 along the first direction Y is greater than the thickness of the second common electrode 42 along the first direction Y, and the thickness of the third common electrode 43 along the first direction Y is less than the thickness of the second common electrode 42 along the first direction Y.
  • the orthographic projection width of the first common electrode 41 on the substrate 10 is greater than the orthographic projection width of the second common electrode 42 on the substrate 10
  • the orthographic projection width of the second common electrode 42 on the substrate 10 is greater than the orthographic projection width of the third common electrode 43 on the substrate 10; the resistance of the first common electrode 41 can be effectively reduced, the voltage drop phenomenon can be improved, and the signal transmission uniformity of the common electrode 40 can be improved.
  • first common electrode 41 can be set at the intersection of the first common electrode 41 and the second common electrode 42, that is, the first common electrode 41 is set at the intersection of the first common electrode 41 and the second common electrode 42 and can pass through the covering layer 54, the third bonding layer 53, and the second bonding layer 52 along the first direction Y and be connected to the first sub-light-emitting device 21;
  • the third common electrode 43 can be set at the intersection of the first common electrode 41 and the third common electrode 43, that is, the third common electrode 43 is set at the intersection of the first common electrode 41 and the third common electrode 43 and can pass through the covering layer 54 along the first direction Y and be connected to the third sub-light-emitting device 23, and the third common electrode 43 can be set at the intersection of the second common electrode 42 and the third common electrode 43, that is, the third common electrode 43 is set at the intersection of the second common electrode 42 and the third common electrode 43
  • the first common electrode 41 can be set at the position where the first common electrode 41 intersects the second common electrode 42 and the third common electrode 43
  • the second common electrode 42 can be set at the position where the second common electrode 42 and the third common electrode 43 intersect, so as to further reduce the resistance of the first common electrode 41 and the second common electrode 42.
  • the sizes of the second sub-light-emitting device 22 and the third sub-light-emitting device 23 in the light-emitting device 20 can be expanded toward the direction of the other light-emitting device 20, so that the sizes of the second sub-light-emitting device 22 and the third sub-light-emitting device 23 are increased, and the light-emitting area of the light-emitting device 20 is further increased; in addition, since the width of the third common electrode 43 is small, the size of the third sub-light-emitting device 23 adjacent to the third common electrode 43 can also be expanded toward the direction of the third common electrode 43.
  • the two first sub-light-emitting devices 21 located in the middle, no common electrode 40 is provided between the two first sub-light-emitting devices 21, then the sizes of the two first sub-light-emitting devices 21 can be expanded in a direction close to each other, so that the sizes of the two first sub-light-emitting devices 21 are increased;
  • the two second sub-light-emitting devices 22 located in the middle, no common electrode 40 is provided between the two second sub-light-emitting devices 22, then the sizes of the two second sub-light-emitting devices 22 can be expanded in a direction close to each other, so that the two The size of the second sub-light-emitting device 22 is increased; similarly, for example, the two third sub-light-emitting devices 23 located on the right in FIG.
  • a third common electrode 43 is arranged between the two third sub-light-emitting devices 23, and since the width of the third common electrode 43 is small, the two third sub-light-emitting devices 23 can expand in a direction close to each other, so that the size of the two third sub-light-emitting devices 23 is increased; for example, in FIG.
  • the size of the two first sub-light-emitting devices 21 can expand in a direction close to each other
  • the size of the two second sub-light-emitting devices 22 can expand in a direction close to each other
  • the two third sub-light-emitting devices 23 can expand in a direction close to each other, so that the size of the first sub-light-emitting device 21, the second sub-light-emitting device 22 and the third sub-light-emitting device 23 is increased; for example, in FIG. 7, the size of the two third sub-light-emitting devices 23 can expand in the direction of another light-emitting device 20, so that the size of the third sub-light-emitting device 23 is increased to increase the light-emitting area of the light-emitting device 20. Therefore, in the embodiment of the present application, by designing the structure and position of the common electrode 40, the light-emitting area and the aperture ratio of the light-emitting device 20 can be effectively increased.
  • the size of the light-emitting device 20 can be increased according to actual needs.
  • the size of the first sub-light-emitting device 21, the second sub-light-emitting device 22, and the third sub-light-emitting device 23 decreases in the direction from the substrate 10 to the light-emitting functional layer; however, since it is not necessary to form steps and avoidance gaps on the side of each light-emitting device 20 in the embodiment of the present application, the light-emitting area of the light-emitting device 20 in the embodiment of the present application can be effectively increased relative to the light-emitting area of the LED in the display module shown in FIG1 .
  • the orthographic projection of the second sub-light-emitting device 22 on the substrate 10 is located within the orthographic projection of the first sub-light-emitting device 21 on the substrate 10, or the orthographic projection of the second sub-light-emitting device 22 on the substrate 10 coincides with the orthographic projection of the first sub-light-emitting device 21 on the substrate 10;
  • the orthographic projection of the third sub-light-emitting device 23 on the substrate 10 is located within the orthographic projection of the second sub-light-emitting device 22 on the substrate 10, or the orthographic projection of the third sub-light-emitting device 23 on the substrate 10 coincides with the orthographic projection of the second sub-light-emitting device 22 on the substrate 10.
  • the light-emitting functional layer also includes a first connecting member 211 connected between adjacent first sub-light-emitting devices 21, a second connecting member 221 connected between adjacent second sub-light-emitting devices 22, and a third connecting member 231 connected between adjacent third sub-light-emitting devices 23; and the first common electrode 41 is connected to the first connecting member 211, the second common electrode 42 is connected to the second connecting member 221, and the third common electrode 43 is connected to the third connecting member 231.
  • the first connecting member 211 is connected between any two adjacent first sub-light-emitting devices 21, the second connecting member 221 is connected between some of the second sub-light-emitting devices 22, and the third connecting member 231 is connected between some of the third sub-light-emitting devices 23.
  • the light-emitting functional layer includes a plurality of first blocks 410 and a plurality of second blocks 420
  • the first block 410 includes a plurality of second sub-light-emitting devices 22 and a second connector 221 connected between the second sub-light-emitting devices 22,
  • the second block 420 includes a plurality of third sub-light-emitting devices 23 and a third connector 231 connected between the third sub-light-emitting devices 23; wherein the first common electrode 41 is located between adjacent first blocks 410 and adjacent second blocks 420, and the second common electrode 42 is located between adjacent second blocks 420. As shown in FIG.
  • the first block 410 is the area enclosed by the first common electrode 41, and may include, for example, four repeating units shown at b
  • the second block 420 is the area enclosed by the first common electrode 41 and the second common electrode 42, and may include, for example, two repeating units shown at b.
  • the first sub-light emitting device 21, the second sub-light emitting device 22 and the third sub-light emitting device 23 can all be inorganic light emitting diode devices, and the light color of the first sub-light emitting device 21 can be red, the light color of the second sub-light emitting device 22 can be green, and the light color of the third sub-light emitting device 23 can be blue, so as to realize the full-color display of the display module.
  • blue light is high-energy light, when blue light is irradiated on the first sub-light emitting device 21, it will cause the first sub-light emitting device 21 to be stimulated to emit light when it is not necessary to emit light.
  • the first sub-light emitting device 21 is arranged at the bottom layer, and the third sub-light emitting device 23 is arranged at the top layer, so as to reduce the probability of blue light irradiating on the first sub-light emitting device 21, and increase the distance between the first sub-light emitting device 21 and the third sub-light emitting device 23, which can effectively improve the light emitting effect and display effect of the display module.
  • the first sub-light-emitting device 21 located at the bottom layer is set to emit red light. Since the area of the first sub-light-emitting device 21 is the largest, the luminous efficiency of the first sub-light-emitting device 21 emitting red light can be compensated; in addition, when the common electrode 40 and the independent electrode 30 are not set on the sides of the second sub-light-emitting device 22 and the third sub-light-emitting device 23, the size of the second sub-light-emitting device 22 and the size of the third sub-light-emitting device 23 can also be expanded toward the side without the common electrode 40 and the independent electrode 30, so that the luminous area of the second sub-light-emitting device 22 and the third sub-light-emitting device 23 can be increased according to actual needs.
  • the first sub-light-emitting device 21 may include a P-type GaP layer/P-type AlGaInP light-emitting layer/AlGaInP layer/N-type AlGaInP layer/N-type GaAs layer, and the P-type may be Mg-doped, and the N-type may be Si-doped, wherein the first connecting member 211 may be formed by a P-type GaP layer or an N-type GaAs layer extending from the first sub-light-emitting device 21.
  • the second sub-light emitting device 22 may include a P-type GaN layer/InGaN light emitting layer/N-type GaN layer, the P-type may be Mg-doped, and the N-type may be Si-doped, wherein the second connecting member 221 may be formed by a P-type GaN layer or an N-type GaN layer extending from the second sub-light emitting device 22.
  • the third sub-light emitting device 23 may include a P-type GaN layer/InGaN light emitting layer/N-type GaN layer, the P-type is usually Mg-doped, and the N-type is usually Si-doped, wherein the third connecting member 231 may be formed by a P-type GaN layer or an N-type GaN layer extending from the third sub-light emitting device 23.
  • the second bonding layer 52 includes a first Bragg reflection layer to allow red light to pass through and reflect blue light.
  • the first Bragg reflection layer can be a stacked film layer formed by alternating silicon oxide layers and titanium oxide layers, and the outermost layer of the first Bragg reflection layer can be a silicon oxide layer, so that the second bonding layer 52 and the first Bragg reflection layer can be shared. That is, the embodiment of the present application can reflect blue light by forming a first Bragg reflection layer above the first sub-light-emitting device 21 to prevent the blue light from irradiating the first sub-light-emitting device 21, thereby further improving the light emitting effect of the light-emitting device 20 and the display effect of the display panel.
  • the third bonding layer 53 includes a second Bragg reflection layer to allow red light and green light to pass through and reflect blue light.
  • the second Bragg reflection layer can be a stacked film layer formed by alternating silicon oxide layers and titanium oxide layers, and the outermost layer of the first Bragg reflection layer can be a silicon oxide layer, so that the third bonding layer 53 and the first Bragg reflection layer can be shared. That is, the embodiment of the present application can reflect blue light by forming a second Bragg reflection layer above the second sub-light emitting device 22 to prevent blue light from irradiating the first sub-light emitting device 21 and the second sub-light emitting device 22, thereby further improving the light emitting effect of the light emitting device 20 and the display effect of the display panel.
  • the first bonding layer 51 is reused as the first bottom electrode 55
  • the light-emitting functional layer also includes a second bottom electrode 56 arranged between the second bonding layer 52 and the second sub-light-emitting device 22, and a third bottom electrode 57 arranged between the third bonding layer 53 and the third sub-light-emitting device 23, and the first sub-light-emitting device 21 is arranged on the first bottom electrode 55, the second sub-light-emitting device 22 is arranged on the second bottom electrode 56, and the third sub-light-emitting device 23 is arranged on the third bottom electrode 57.
  • first bottom electrode 55 can be continuously arranged under all the first sub-light-emitting devices 21; the second bottom electrode 56 will be separated by the first common electrode 41, so the first bottom electrode 55 can be continuously distributed in the first block 410; the third bottom electrode 57 will be separated by the first common electrode 41 and the second common electrode 42, so the third bottom electrode 57 can be continuously distributed in the second block 420.
  • the first common electrode 41 is connected to the first bottom electrode 55
  • the second common electrode 42 is connected to the second bottom electrode 56
  • the third common electrode 43 is connected to the third bottom electrode 57.
  • the present embodiment can further reduce the connection resistance between the common electrode 40 and the light emitting device 20, improve the signal transmission effect, and improve the light emitting effect of the light emitting device 20 and the display effect of the display module.
  • a common signal line (not shown in the figure) is provided in the driving circuit unit, and the first common electrode 41, the second common electrode 42 and the third common electrode 43 in the present application are connected to each other and can be connected to the common signal line in the driving circuit unit, then the first sub-light-emitting device 21 is connected to the common signal line through the first connecting member 211 and the first common electrode 41 in sequence, the second sub-light-emitting device 22 is connected to the common signal line through the second connecting member 221 and the second common electrode 42 in sequence, and the third sub-light-emitting device 23 is connected to the common signal line through the third connecting member 231 and the third common electrode 43 in sequence to realize signal transmission; in addition, the first bonding layer 51 can also be connected to the common signal line on the basis of bonding the first sub-light-emitting device 21, so that the first sub-light-emitting device 21 can be connected to the common signal line through the first bonding layer 51.
  • the first sub-light-emitting device 21 is connected to the common signal line through the first bottom electrode 55 and the first common electrode 41 in sequence
  • the second sub-light-emitting device 22 is connected to the common signal line through the second bottom electrode 56 and the second common electrode 42 in sequence
  • the third sub-light-emitting device 23 is connected to the common signal line through the third bottom electrode 57 and the third common electrode 43 in sequence to realize signal transmission
  • the first bottom electrode 55 can also be connected to the common signal line, so that the first sub-light-emitting device 21 can be connected to the common signal line through the first bottom electrode 55.
  • the material of the second bottom electrode 56 and the third bottom electrode 57 may include a transparent conductive material, such as an ITO material.
  • the number of sub-light-emitting devices in the light-emitting device 20 in the embodiment of the present application is at least two, and the number of sub-light-emitting devices in the light-emitting device 20 in the above embodiment is three. In other implementations of the present application, the number of sub-light-emitting devices in the light-emitting device 20 can also be two, four or more, which is not limited here.
  • the light-emitting device 20 includes two sub-light-emitting devices arranged along the first direction Y; the multiple independent electrodes include two independent electrodes connected to the two sub-light-emitting devices; the common electrode 40 includes a fourth common electrode 44 and a fifth common electrode 45 respectively connected to the two sub-light-emitting devices; wherein the multiple light-emitting devices 20 are distributed in an array along the second direction X1 and the third direction X2, the multiple fourth common electrodes 44 are arranged along the second direction X1 and the third direction X2, the multiple fifth common electrodes 45 are arranged along the second direction X1 and the third direction X2, and the multiple fourth common electrodes 44 and the multiple fifth common electrodes 45 are arranged in an interlaced manner to form a mesh structure to effectively reduce the resistance of the common electrode 40, wherein both sides of each light-emitting device 20 are adjacent to the common electrode 40.
  • connection methods among the independent electrode 30 , the common electrode 40 and the light emitting device 20 in this embodiment can all be carried out with reference to the above embodiments.
  • the luminous color of the sub-light emitting device connected to the fourth common electrode 44 can be green, and the luminous color of the sub-light emitting device connected to the fifth common electrode 45 can be blue, and can also be other color combinations, but are not limited to this.
  • the embodiments of the present application only take this as an example for explanation.
  • the light-emitting device 20 may also include four sub-light-emitting devices arranged along the first direction Y, and the multiple independent electrodes include four independent electrodes connected to the four sub-light-emitting devices;
  • the common electrode 40 includes a sixth common electrode 46, a seventh common electrode 47, an eighth common electrode 48 and a ninth common electrode 49 respectively connected to the four sub-light-emitting devices; wherein the sixth common electrode 46 and the eighth common electrode 48 can extend along the third direction X2, the seventh common electrode 47 and the ninth common electrode 49 can extend along the second direction X1, and the multiple sixth common electrodes 46, the multiple seventh common electrodes 47, the multiple eighth common electrodes 48 and the multiple ninth common electrodes 49 are cross-arranged to form a mesh structure, which can effectively reduce the resistance of the common electrode 40.
  • the light-emitting color of the sub-light-emitting device connected to the sixth common electrode 46 can be red
  • the light-emitting color of the sub-light-emitting device connected to the seventh common electrode 47 can be green
  • the light-emitting color of the sub-light-emitting device connected to the eighth common electrode 48 can be blue
  • the light-emitting color of the sub-light-emitting device connected to the ninth common electrode 49 can be yellow.
  • Other color combinations are also possible, and are not limited to this.
  • the embodiments of the present application only take this as an example for illustration.
  • the light-emitting functional layer also includes a plurality of lenses 60 disposed on the covering layer 54, and the plurality of lenses 60 can be disposed one-to-one corresponding to the plurality of light-emitting devices 20 to focus the light emitted by the light-emitting devices 20, thereby increasing the light emission intensity of the light-emitting devices 20 and the display brightness of the display module, thereby effectively improving the display effect of the display module and reducing the power consumption of the display module.
  • the embodiment of the present application sets the common electrode 40 between adjacent light-emitting devices 20, and at the same time, the common electrode 40 is connected to the sub-light-emitting device along the first direction Y, thereby achieving the connection between the common electrode 40 and the sub-light-emitting device, avoiding the setting of the step area in the light-emitting device 20, reducing the process difficulty, and can improve the yield rate of the display module and improve the performance of the display module; in addition, since the embodiment of the present application does not need to form a step at the side wall of the light-emitting device 20, nor does it need to leave a gap at the step to keep a distance from the common electrode 40, and the common electrode 40 and the independent electrode 30 are located on different sides of the sub-light-emitting device, the embodiment of the present application can effectively increase the light-emitting area of the light-emitting device 20 and improve the aperture ratio.
  • an embodiment of the present application further provides a display device, which includes a device body and the display module described in the above embodiment, and the display module and the device body are combined into one.
  • the device body may include a frame, and other functional components, such as sensors, etc.
  • the display device provided in the embodiments of the present application may include a direct-view display screen for home/office projectors and portable electronic products such as smartphones, laptops, wearable electronic devices, light engines for AR and VR glasses, and retinal projection.

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Abstract

本申请公开了一种显示模组及显示装置。其中，发光器件包括沿垂直于衬底的第一方向排列的至少两个子发光器件；多个独立电极与各子发光器件连接；至少两个公共电极设置于相邻的发光器件之间，公共电极沿第一方向连接于子发光器件，公共电极和独立电极位于子发光器件的不同侧，且每一子发光器件皆与公共电极电性连接。

Description

显示模组及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种显示模组及显示装置。
 背景技术
无机发光二极管是一种具有高亮度、高发光效率的固态光源。在显示技术领域，主要用作液晶显示器的背光源和户外全彩显示器。无机发光二极管显示器相较于液晶显示器和有机发光二极管显示器具有功耗低、响应快、光效高的巨大优势，在高分辨率显示器、虚拟现实和增强现实等技术领域具有重大的商业价值。
目前，为了实现无机发光二极管的其他色彩或者全彩化显示，常需要将多个无机发光二极管采用水平堆叠或垂直堆叠的方式堆叠在一起，其中垂直堆叠相比水平堆叠具有PPI显著提高的优势；然而，为了实现多个无机发光二极管的垂直堆叠，常需要在垂直堆叠的多个无机发光二极管器件的侧边形成台阶，以容置公共电极，但是，若该台阶的尺寸过大将减小无机发光二极管器件的布置空间，若该台阶的尺寸过小，又会提高公共电极的工艺难度并降低公共电极的良品率。
 发明概述
本申请实施例提供一种显示模组及显示装置，能够避免台阶的设置，降低公共电极的工艺难度，提高公共电极的良品率，并改善器件性能。
本申请实施例提供一种显示模组，其包括衬底以及设置于所述衬底上的发光功能层，所述发光功能层包括：
多个发光器件，所述发光器件包括沿垂直于所述衬底的第一方向排列的至少两个子发光器件；
多个独立电极，与各所述子发光器件连接；
至少两个公共电极，设置于相邻的所述发光器件之间，且所述公共电极的数量大于或等于所述发光器件中所述子发光器件的数量；
其中，所述公共电极沿所述第一方向连接于所述子发光器件，所述公共电极和所述独立电极位于所述子发光器件的不同侧，且每一所述子发光器件皆与所述公共电极电性连接。
在本申请的一种实施例中，所述发光器件包括沿所述第一方向排列的第一子发光器件和第二子发光器件，多个所述独立电极包括第一独立电极和第二独立电极，至少两个所述公共电极包括第一公共电极和第二公共电极；
其中，所述第一独立电极和所述第一公共电极连接于所述第一子发光器件的不同侧，所述第二独立电极和所述第二公共电极连接于所述第二子发光器件的不同侧。
在本申请的一种实施例中，所述发光器件还包括沿所述第一方向位于所述第一子发光器件一侧或所述第二子发光器件一侧的第三子发光器件，多个所述独立电极包括与所述第三子发光器件连接的第三独立电极，多个所述公共电极包括沿所述第一方向与所述第三子发光器件连接的第三公共电极，且所述第三公共电极与所述第一公共电极、所述第二公共电极彼此相连接。
在本申请的一种实施例中，所述第一公共电极的数量、所述第二公共电极的数量以及所述第三公共电极的数量皆大于或等于1。
在本申请的一种实施例中，多个所述发光器件沿平行于所述衬底的第二方向和第三方向排布，所述第一公共电极沿所述第二方向和/或所述第三方向延伸，所述第二公共电极沿所述第二方向和/或所述第三方向延伸，所述第三公共电极沿所述第二方向和/或所述第三方向延伸。
在本申请的一种实施例中，所述第一子发光器件位于所述衬底和所述第二子发光器件之间，所述第三子发光器件位于所述第二子发光器件远离所述第一子发光器件的一侧，所述第一公共电极沿所述第一方向上的厚度大于所述第二公共电极沿所述第一方向上的厚度，所述第三公共电极沿所述第一方向上的厚度小于所述第二公共电极沿所述第一方向上的厚度。
在本申请的一种实施例中，所述衬底包括驱动电路单元，所述发光功能层还包括设置于所述衬底和所述第一子发光器件之间的第一键合层、设置于所述第一子发光器件和所述第二子发光器件之间的第二键合层、设置于所述第二子发光器件和所述第三子发光器件之间的第三键合层、以及设置于所述第三子发光器件远离所述第二子发光器件一侧的覆盖层；
其中，所述第一公共电极沿所述第一方向穿过所述覆盖层、所述第三键合层以及所述第二键合层，并与所述第一子发光器件连接，所述第二公共电极沿所述第一方向穿过所述覆盖层以及所述第三键合层，并与所述第二子发光器件连接，所述第三公共电极沿所述第一方向穿过所述覆盖层，并与所述第三子发光器件连接，且所述第一公共电极、所述第二公共电极以及所述第三公共电极皆与所述驱动电路单元连接。
在本申请的一种实施例中，所述发光功能层还包括连接于相邻的所述第一子发光器件之间的第一连接件、连接于相邻的所述第二子发光器件之间的第二连接件、以及连接于相邻的所述第三子发光器件之间的第三连接件，且所述第一公共电极与所述第一连接件连接，所述第二公共电极与所述第二连接件连接，所述第三公共电极与所述第三连接件连接；
其中，任意相邻两个所述第一子发光器件之间连接有所述第一连接件，部分所述第二子发光器件之间连接有所述第二连接件，部分所述第三子发光器件之间连接有所述第三连接件。
在本申请的一种实施例中，所述发光功能层包括多个第一区块和多个第二区块，且所述第一区块包括多个所述第二子发光器件以及连接于所述第二子发光器件之间的所述第二连接件，所述第二区块包括多个所述第三子发光器件以及连接于所述第三子发光器件之间的所述第三连接件；
其中，所述第一公共电极位于相邻的所述第一区块之间和相邻的所述第二区块之间，所述第二公共电极位于相邻的所述第二区块之间。
在本申请的一种实施例中，所述第一键合层复用为第一底部电极，所述发光功能层还包括设置于所述第二键合层和所述第二子发光器件之间的第二底部电极、以及设置于所述第三键合层和所述第三子发光器件之间的第三底部电极，且所述第一子发光器件设置于所述第一底部电极上，所述第二子发光器件设置于所述第二底部电极上，所述第三子发光器件设置于所述第三底部电极上；
其中，所述第一公共电极与第一底部电极连接，所述第二公共电极与所述第二底部电极连接，所述第三公共电极与所述第三底部电极连接。
在本申请的一种实施例中，所述第一子发光器件的发光颜色为红色，所述第二子发光器件的发光颜色为绿色，所述第三子发光器件的发光颜色为蓝色。
在本申请的一种实施例中，所述第二键合层包括第一布拉格反射层，以使红色光透过，并反射蓝色光。
在本申请的一种实施例中，所述第三键合层包括第二布拉格反射层，以使红色光以及绿色光透过，并反射蓝色光。
在本申请的一种实施例中，所述第一公共电极在所述衬底上的正投影宽度大于所述第二公共电极在所述衬底上的正投影宽度，所述第二公共电极在所述衬底上的正投影宽度大于所述第三公共电极在所述衬底上的正投影宽度。
在本申请的一种实施例中，所述第二子发光器件在所述衬底上的正投影位于所述第一子发光器件在所述衬底上的正投影内，或者，所述第二子发光器件在所述衬底上的正投影与所述第一子发光器件在所述衬底上的正投影相重合；
所述第三子发光器件在所述衬底上的正投影位于所述第一子发光器件在所述衬底上的正投影内，或者，所述第三子发光器件在所述衬底上的正投影与所述第一子发光器件在所述衬底上的正投影相重合。
在本申请的一种实施例中，所述子发光器件的至少一侧设置有所述公共电极。
在本申请的一种实施例中，所述公共电极的数量为多个，且多个所述公共电极相连接，以形成网状结构。
根据本申请的上述目的，本申请实施例还提供一种显示装置，所述显示装置包括装置主体以及显示模组，且所述显示模组与所述装置主体组合为一体；
所述显示模组包括衬底以及设置于所述衬底上的发光功能层，所述发光功能层包括：
多个发光器件，所述发光器件包括沿垂直于所述衬底的第一方向排列的至少两个子发光器件；
多个独立电极，与各所述子发光器件连接；
至少两个公共电极，设置于相邻的所述发光器件之间，且所述公共电极的数量大于或等于所述发光器件中所述子发光器件的数量；
其中，所述公共电极沿所述第一方向连接于所述子发光器件，所述公共电极和所述独立电极位于所述子发光器件的不同侧，且每一所述子发光器件皆与所述公共电极电性连接。
在本申请的一种实施例中，所述发光器件包括沿所述第一方向排列的第一子发光器件和第二子发光器件，多个所述独立电极包括第一独立电极和第二独立电极，至少两个所述公共电极包括第一公共电极和第二公共电极；
其中，所述第一独立电极和所述第一公共电极连接于所述第一子发光器件的不同侧，所述第二独立电极和所述第二公共电极连接于所述第二子发光器件的不同侧。
在本申请的一种实施例中，所述发光器件还包括沿所述第一方向位于所述第一子发光器件一侧或所述第二子发光器件一侧的第三子发光器件，多个所述独立电极包括与所述第三子发光器件连接的第三独立电极，多个所述公共电极包括沿所述第一方向与所述第三子发光器件连接的第三公共电极，且所述第三公共电极与所述第一公共电极、所述第二公共电极彼此相连接。
有益效果
本申请通过将公共电极设置在相邻的发光器件之间，同时公共电极沿第一方向与子发光器件连接，实现了公共电极与子发光器件的连接，避免了发光器件中台阶区域的设置，降低了工艺难度，并可以提高显示模组的良品率，提高显示模组的性能；此外，由于本申请中不需要在发光器件的侧壁处形成台阶，也不需要在台阶处留出间隙来与公共电极保持距离，且公共电极和独立电极位于子发光器件的不同侧，因此，本申请可以有效提高发光器件的发光面积，提高开口率。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为相关技术中的显示模组的一种结构示意图；
图2为本申请实施例提供的显示模组的一种平面结构示意图；
图3为本申请实施例图2中a处放大结构示意图；
图4为本申请实施例图3中沿AA线截得的一种截面结构示意图；
图5为本申请实施例图3中沿BB线截得的一种截面结构示意图；
图6为本申请实施例图3中沿CC线截得的一种截面结构示意图；
图7为本申请实施例图3中沿DD线截得的一种截面结构示意图；
图8为本申请实施例图2中b处放大结构示意图；
图9为本申请实施例提供的显示模组的另一种平面结构示意图；
图10为本申请实施例提供的显示模组的另一种平面结构示意图；
图11为本申请实施例提供的显示模组的另一种平面结构示意图；
图12为本申请实施例图3中沿AA线截得的另一种截面结构示意图；
图13为本申请实施例提供的显示模组的另一种平面结构示意图；
图14为本申请实施例提供的显示模组的另一种平面结构示意图。
 本发明的实施方式
在以下详细说明中，仅简单地通过例示示出和描述了本申请的某些实施方式。如本领域技术人员可以理解的，本文中描述的实施方式可以以多种方式进行修改，而不背离本申请的精神或范围。
在附图中，为了清晰起见并且为了更好地理解和便于描述，可能放大了层、膜、板、区域等的厚度。应当理解当元件如层、膜、区域、或衬底被称为“位于另一元件上”时，其可以直接位于另一元件上或者还可以存在插入的元件。
另外，除非相反地明确描述，否则词语“包括”及其像“包含”或“含有”这样的变体将被理解为暗含包括所论述的元件，但不一定排除其它元件。进一步，在说明书中，词语“在……上”指放置在对象部分上方或下方，而不一定指基于重力方向放置在对象部分的上侧。
将理解的是，尽管在本文中可以使用术语“第一”,“第二”等来描述各种组件,但是这些组件不应受到这些术语的限制。这些组件仅用于区分一个组件和另一个组件。
如本文所使用的，单数形式“一”、“一个”和“该”也意图包括复数形式，除非上下文另外明确指出。
还将理解的是，本文中使用的术语“包括”和/或“包含”指定存在所述特征或组件，但是不排除一个或多个其他特征或组件的存在或添加。
将理解的是，当层、区域或部件被称为“形成在”另一层、区域或部件上时，其可以直接或间接地形成在另一层，区域或部件上。例如，可以存在中间层，区域或组件。
在以下示例中，x轴、y轴和z轴不限于直角坐标系的三个轴，并且可以在更广泛的意义上进行解释。例如，x轴、y轴和z轴可以彼此垂直，或者可以表示彼此不垂直的不同方向。
请参照图1，目前，在垂直堆叠的LED显示模组中，常在基底1上依次形成堆叠的第一LED2、第二LED3以及第三LED4，且每个LED需要连接对应的独立电极以及连接共同的公共电极8，例如，第一LED2连接第一独立电极5，第二LED3连接第二独立电极6，第三LED4连接第三独立电极7，且第一LED2、第二LED3以及第三LED4还需要连接至公共电极8，以实现发光；但是，由于公共电极8位于堆叠的三个LED侧面，且每个LED处均需要蚀刻出台阶，以容置公共电极8，同时，还需要在LED和公共电极8之间留出间隔9，以避免出现干涉和干扰，若该台阶的尺寸过大将减小LED的布置空间，发光面积和开口率，若该台阶的尺寸过小，又会提高公共电极8的工艺难度并降低公共电极8的良品率，因此，图1所示显示模组的工艺限制较大，难以满足显示技术的发展。
请参照图2至图7，本申请实施例提供一种显示模组，该显示模组包括衬底10以及设置于衬底10上的发光功能层，发光功能层包括多个发光器件20、多个独立电极30以及至少两个公共电极40。
其中，发光器件20包括沿垂直于衬底10的第一方向Y排列的至少两个子发光器件；多个独立电极30与各子发光器件连接；至少两个公共电极40设置于相邻的发光器件20之间，且公共电极40的数量大于或等于发光器件20中子发光器件的数量。
进一步地，公共电极40沿第一方向Y连接于子发光器件，公共电极40和独立电极30位于子发光器件的不同侧，且每一子发光器件皆与公共电极40电性连接。
在实施应用过程中，本申请实施例通过将公共电极40设置在相邻的发光器件20之间，同时公共电极40沿第一方向Y与子发光器件连接，实现了公共电极40与子发光器件的连接，避免了发光器件20中台阶区域的设置，降低了工艺难度，并可以提高显示模组的良品率，提高显示模组的性能；此外，由于本申请实施例中不需要在发光器件20的侧壁处形成台阶，也不需要在台阶处留出间隙来与公共电极40保持距离，且公共电极40和独立电极30位于子发光器件的不同侧，因此，本申请实施例可以有效提高发光器件20的发光面积，提高开口率。
具体地，请继续结合图2至图7，本申请实施例提供的显示模组包括衬底10以及设置于衬底10上的发光功能层。
发光功能层包括设置于衬底10上的多个发光器件20，其中，衬底10上还设置有驱动电路单元（图中并未示出），而驱动电路单元可以包括薄膜晶体管器件或者CMOS管器件、以及信号线，且发光器件20连接至驱动电路单元，以实现电信号的传输以及对发光器件20的发光控制过程。
发光器件20中子发光器件的数量大于或等于两个，而公共电极40的数量大于或等于一个发光器件20中子发光器件的数量，例如一个发光器件20中子发光器件的数量为两个，则公共电极40的数量需要大于或等于2，或者一个发光器件20中子发光器件的数量为三个，则公共电极40的数量需要大于或等于3。
在一种实施例中，发光器件20包括沿垂直于衬底10的第一方向Y依次排列的第一子发光器件21、第二子发光器件22以及第三子发光器件23，即第一子发光器件21位于第二子发光器件22和衬底10之间，第三子发光器件23位于第二子发光器件22远离第一子发光器件21的一侧。
发光功能层还包括设置于衬底10和第一子发光器件21之间的第一键合层51、设置于第一子发光器件21和第二子发光器件22之间的第二键合层52、设置于第二子发光器件22和第三子发光器件23之间的第三键合层53、以及设置于第三子发光器件23远离第二子发光器件22一侧的覆盖层54；其中，第一子发光器件21设置于第一键合层51上并通过第一键合层51连接于衬底10上，第二子发光器件22设置于第二键合层52上并通过第二键合层52连接于第一子发光器件21远离衬底10的一侧，第三子发光器件23设置于第三键合层53上并通过第三键合层53连接于第二子发光器件22远离第一子发光器件21的一侧。
在一种实施例中，第一键合层51的材料可以包括金属材料，且该金属材料具备反光作用，进而在起到键合第一子发光器件21的作用的同时，还可以对发光器件20向衬底10一侧的出光进行反射，以提高发光器件20的出光效率；第二键合层52、第三键合层53以及覆盖层54的材料可以包括氧化硅材料，以使得第二键合层52和第三键合层53为透明膜层，在起到键合第二子发光器件22和第三子发光器件23的同时，还不会影响发光器件20的出光效果。
需要说明的是，在一种实施例中，衬底10可以为硅材料基板，而驱动电路单元可以设置在衬底10上，此时，第一子发光器件21可以通过第一键合层51直接连接在衬底10上；此外，在另一种实施例中，显示模组也可以包括设置于衬底10和发光功能层之间的驱动电路层，而驱动电路单元设置在驱动电路层中，此时，第一子发光器件21可以通过第一键合层51连接在驱动电路层上。
发光功能层还包括将发光器件20与驱动电路单元连接起来以实现信号传输的独立电极30以及公共电极40。
其中，独立电极30包括与第一子发光器件21连接的第一独立电极31、与第二子发光器件22连接的第二独立电极32以及与第三子发光器件23连接的第三独立电极33；而第一独立电极31、第二独立电极32以及第三独立电极33可以分别连接于驱动电路单元中的不同开关管，例如薄膜晶体管或者CMOS管，以实现第一子发光器件21、第二子发光器件22以及第三子发光器件23的独立控制。
公共电极40设置于相邻的发光器件20之间，并包括沿平行于衬底10的方向上延伸的第一公共电极41、第二公共电极42以及第三公共电极43，且第一公共电极41沿第一方向Y连接于第一子发光器件21，第二公共电极42沿第一方向Y连接于第二子发光器件22，第三公共电极43沿第一方向Y连接于第三子发光器件23，而第一公共电极41、第二公共电极42以及第三公共电极43彼此之间相互连接，即第一公共电极41、第二公共电极42以及第三公共电极43可以为一体成型设置。
在本申请实施例中，第一公共电极41、第二公共电极42以及第三公共电极43沿第一方向Y分别连接于第一子发光器件21、第二子发光器件22以及第三子发光器件23，进而可以避免台阶的设置，并实现第一子发光器件21、第二子发光器件22以及第三子发光器件23与公共电极40的连接，降低了工艺难度，并可以提高显示模组的良品率，提高显示模组的性能；此外，由于本申请实施例中不需要在发光器件20的侧壁处形成台阶，也不需要在台阶处留出间隙来与公共电极40保持距离，因此，本申请实施例可以有效提高发光器件20的发光面积，提高开口率。
需要说明的是，相对于图1所示的显示模组中，在形成堆叠的LED的过程中，尚需要在相邻的堆叠LED之间设置间隙间隔开，而本申请实施例中可以将上述公共电极40设置在相邻的发光器件20的间隙之中，并不需要额外预留空间来设置公共电极40，因此，本申请实施例可以进一步地增加发光器件20的发光面积，提高开口率。
在一种实施例中，多个发光器件20沿平行于衬底10的第二方向X1和第三方向X2呈阵列排布，如图2所示。
第一公共电极41位于相邻的发光器件20之间并可以沿第二方向X1和/或第三方向X2延伸，第二公共电极42位于相邻的发光器件20之间并可以沿第二方向X1和/或第三方向X2延伸，第三公共电极43位于相邻的发光器件20之间并可以沿第二方向X1和/或第三方向X2延伸。
需要说明的是，第一公共电极41、第二公共电极42以及第三公共电极43各自位于不同且相邻的发光器件20之间，且沿第二方向X1相邻的发光器件20之间只设置一个第一公共电极41、一个第二公共电极42以及一个第三公共电极43中的一者，同理，沿第三方向X2相邻的发光器件20之间只设置一个第一公共电极41、一个第二公共电极42以及一个第三公共电极43中的一者。
在一种实施例中，请参照图2，其中包括沿第二方向X1延伸以及沿第三方向X2延伸的多个第一公共电极41，沿第二方向X1延伸的多个第二公共电极42，沿第三方向X2延伸的多个第三公共电极43；进一步地，在第三方向X2上，第二公共电极42位于相邻的第一公共电极41之间，而在第二方向X1上，第三公共电极43位于相邻的第一公共电极41之间。
在一种实施例中，在沿第三方向X2上，相邻的第二公共电极42和第一公共电极41之间设置沿第三方向X2排列的至少一个发光器件20，在沿第二方向X1上，相邻的第三公共电极43和第一公共电极41之间设置有沿第二方向X1排列的至少一个发光器件20。且本申请实施例中以相邻的第二公共电极42和第一公共电极41之间设置沿第三方向X2排列的两个发光器件20，相邻的第三公共电极43和第一公共电极41之间设置有沿第二方向X1排列的两个发光器件20为例，进行说明。则由第一公共电极41、第二公共电极42以及第三公共电极43围成了一个如图8所示的重复单元，且每个重复单元包括四个发光器件20。
其中，请结合图3和图8，在每个重复单元内，发光器件20包括与公共电极40相对的第一侧边以及其他的第二侧边，且发光器件20的第二侧边处的布置空间相对于第一侧边处的布置空间更大，而本申请实施例中将独立电极30设置在发光器件20的第二侧边上，使得独立电极30设置在发光器件20远离公共电极40的侧边上，可以为独立电极30的设置留出充足的空间，并避免独立电极30与公共电极40之间发生干涉和干扰。
需要说明的是，每个发光器件20可以包括两个第一侧边以及两个第二侧边，即每个发光器件20的至少一侧设置有公共电极40，而多个公共电极40可以相连接，以形成网状结构，且发光器件20或者上述重复单元可位于网状结构的网孔内，进而可以减小公共电极40的电阻，改善公共电极40的电压降现象。
可以理解的是，当每个发光器件20的至少一侧设置有公共电极40时，则发光器件20的侧边数量需要大于或等于发光器件20中子发光器件的数量，例如当发光器件20中子发光器件的数量为三个时，则各子发光器件或者发光器件20的形状可以为三角形、四边形或其他多边形，例如图2中所示，发光器件20的形状为四边形。
在一种实施例中，请参照图9，发光器件20还可以为三角形，多个发光器件20呈阵列排布，且每个发光器件20的两个边与公共电极40相邻接，发光器件20的另一个边可以设置独立电极30（图中并未示出），其中，每个公共电极40的排列方向可以与其相邻的发光器件20的边的方向平行，第一公共电极41沿第四方向X3延伸并与呈三角形的发光器件20的底边相对设置，且任意相邻的两行发光器件20之间皆设置有一个第一公共电极41；第二公共电极42和第三公共电极43皆沿第五方向X4延伸，并与呈三角形的发光器件20的侧边相对设置。
在另一种实施例中，请参照图10，发光器件20同样呈三角形，多个发光器件20呈阵列排布，且每个发光器件20的两个边与公共电极40相邻接，发光器件20的另一个边可以设置独立电极30（图中并未示出），其中，每个公共电极40的排列方向可以与其相邻的发光器件20的边的方向平行，第一公共电极41沿第四方向X3延伸并与呈三角形的发光器件20的底边相对设置，且每间隔两行发光器件20设置有一个第一公共电极41，即相邻的两个第一公共电极41之间设置有两行发光器件20；第二公共电极42和第三公共电极43皆沿第五方向X4延伸，并与呈三角形的发光器件20的侧边相对设置。
在另一种实施例中，请参照图11，发光器件20同样呈三角形，多个发光器件20呈阵列排布，且每个发光器件20的两个边与公共电极40相邻接，发光器件20的另一个边可以设置独立电极30（图中并未示出），其中，每个公共电极40的排列方向可以与其相邻的发光器件20的边的方向平行，第一公共电极41沿第四方向X3延伸并与呈三角形的发光器件20的底边相对设置，且任意相邻的两行发光器件20设置有一个第一公共电极41；第二公共电极42和第三公共电极43皆与呈三角形的发光器件20的侧边相对设置，具体地，第二公共电极42包括沿第五方向X4延伸的第一段421和沿第六方向X5延伸的第二段422，且第一段421和第二段422位于相邻的发光器件20之间并交替排列，第三公共电极43包括沿第五方向X4延伸的第三段431和沿第六方向X5延伸的第四段432，且第三段431和第四段432位于相邻的发光器件20之间并交替排列。
请结合图2、图3、图4、图5、图6以及图7，其中图4为图3中沿AA线截得的一种截面结构示意图，图5为图3中沿BB线截得的一种截面结构示意图，图6为图3中沿CC线截得的一种截面结构示意图，图7为图3中沿DD线截得的一种截面结构示意图。
独立电极30至少设置于各子发光器件的上表面，第一独立电极31设置于第一子发光器件21的上表面穿过第一键合层51与衬底10中的驱动电路单元连接；第二独立电极32设置于第二子发光器件22的上表面并穿过第二键合层52和第一键合层51与驱动电路单元连接，如图5和图7所示；第三独立电极33设置于第三子发光器件23的上表面并穿过第三键合层53、第二键合层52以及第一键合层51与驱动电路单元连接，如图5所示。
在一种实施例中，第一独立电极31、第二独立电极32以及第三独立电极33的材料可以包括透明导电材料，例如ITO材料。
进一步地，第一公共电极41沿第一方向Y穿过覆盖层54、第三键合层53、第二键合层52并与第一子发光器件21连接，如图4至图7所示；第二公共电极42沿第一方向Y穿过覆盖层54和第三键合层53并与第二子发光器件22连接，如图6和图7所示；第三公共电极43沿第一方向Y穿过覆盖层54并与第三子发光器件23连接，如图4和图5所示。因此，第一公共电极41沿第一方向Y上的厚度大于第二公共电极42沿第一方向Y上的厚度，第三公共电极43沿第一方向Y上的厚度小于第二公共电极42沿第一方向Y上的厚度。
进一步地，由于第一公共电极41经过的过孔最深，而第二公共电极42经过的过孔次之，第三公共电极43经过的过孔最浅，则第一公共电极41在衬底10上的正投影宽度大于第二公共电极42在衬底10上的正投影宽度，第二公共电极42在衬底10上的正投影宽度大于第三公共电极43在衬底10上的正投影宽度；可以有效降低第一公共电极41的电阻，改善电压降现象，提高公共电极40的信号传输均一性。
此外，如图2所示，第一公共电极41、第二公共电极42以及第三公共电极43之间存在交叉的位置，其中，在第一公共电极41和第二公共电极42的交叉位置可以设置第一公共电极41，即在第一公共电极41和第二公共电极42的交叉位置，设置第一公共电极41并可以沿第一方向Y穿过覆盖层54、第三键合层53、第二键合层52并与第一子发光器件21连接；在第一公共电极41和第三公共电极43交叉的位置可以设置第三公共电极43，即在第一公共电极41和第三公共电极43的交叉位置，设置第三公共电极43并可以沿第一方向Y穿过覆盖层54并与第三子发光器件23连接，在第二公共电极42和第三公共电极43交叉的位置可以设置第三公共电极43，即在第二公共电极42和第三公共电极43的交叉位置，设置第三公共电极43并可以沿第一方向Y穿过覆盖层54并与第三子发光器件23连接。
在本申请的其他实施例中，第一公共电极41分别与第二公共电极42、第三公共电极43交叉的位置皆可以设置第一公共电极41，在第二公共电极42和第三公共电极43交叉的位置可以设置第二公共电极42，仅以可以进一步地减小第一公共电极41和第二公共电极42的电阻。
如图4、图6以及图7所示，当相邻两个发光器件20之间并未设置公共电极40和独立电极30时，则发光器件20中的第二子发光器件22和第三子发光器件23的尺寸皆可以朝着另一发光器件20的方向进行扩展，使得第二子发光器件22和第三子发光器件23的尺寸增大，进一步提高了发光器件20的发光面积；此外，由于第三公共电极43的宽度较小，因此，与第三公共电极43相邻的第三子发光器件23的尺寸也可以朝着第三公共电极43的方向进行扩展，例如图4中，位于中间的两个第一子发光器件21，两个第一子发光器件21之间没有设置公共电极40，则两个第一子发光器件21的尺寸可以朝着彼此靠近的方向扩展，使得两个第一子发光器件21的尺寸增大；位于中间的两个第二子发光器件22，两个第二子发光器件22之间没有设置公共电极40，则两个第二子发光器件22的尺寸可以朝着彼此靠近的方向扩展，使得两个第二子发光器件22的尺寸增大；同理，例如图4中位于右边的两个第三子发光器件23，两个第三子发光器件23之间设置第三公共电极43，由于第三公共电极43的宽度较小，进而两个第三子发光器件23可以朝着彼此靠近的方向扩展，使得两个第三子发光器件23的尺寸增大；例如图6中，两个第一子发光器件21的尺寸可以朝着彼此靠近的方向扩展，两个第二子发光器件22的尺寸可以朝着彼此靠近的方向扩展，两个第三子发光器件23可以朝着彼此靠近的方向扩展，使得第一子发光器件21、第二子发光器件22以及第三子发光器件23的尺寸增大；例如图7中，两个第三子发光器件23的尺寸可以朝着另一个发光器件20的方向进行扩展，使得第三子发光器件23的尺寸增大，以提高发光器件20的发光面积，因此，本申请实施例中通过对公共电极40的结构以及位置进行设计，可以有效提高发光器件20的发光面积以及开口率。
可以理解的是，当发光器件20的侧边没有设置公共电极40和独立电极30时，或者设置第三公共电极43时，则该发光器件20的尺寸可以根据实际需求进行增大。而当发光器件20的两侧设置有公共电极40和/或独立电极30时，如图5所示，第一子发光器件21、第二子发光器件22以及第三子发光器件23的尺寸沿衬底10指向发光功能层的方向上减小；但是，由于本申请实施例中不需要在各发光器件20的侧面形成台阶和避让间隙，因此，本申请实施例中发光器件20的发光面积相对于图1所示的显示模组中LED的发光面积可以得到有效提高。
在一种实施例中，第二子发光器件22在衬底10上的正投影位于第一子发光器件21在衬底10上的正投影内，或者，第二子发光器件22在衬底10上的正投影与第一子发光器件21在衬底10上的正投影相重合；第三子发光器件23在衬底10上的正投影位于第二子发光器件22在衬底10上的正投影内，或者，第三子发光器件23在衬底10上的正投影与第二子发光器件22在衬底10上的正投影相重合。
在一种实施例中，发光功能层还包括连接于相邻的第一子发光器件21之间的第一连接件211、连接于相邻的第二子发光器件22之间的第二连接件221、以及连接于相邻的第三子发光器件23之间的第三连接件231；且第一公共电极41与第一连接件211连接，第二公共电极42与第二连接件221连接，第三公共电极43与第三连接件231连接。
其中，由于第一公共电极41的厚度较大，会对第二连接件221和第三连接件231进行隔断，而第二公共电极42也会对第三连接件231进行隔断，因此，在本实施例中，任意相邻两个第一子发光器件21之间连接有第一连接件211，部分第二子发光器件22之间连接有第二连接件221，部分第三子发光器件23之间连接有第三连接件231。
具体地，发光功能层包括多个第一区块410和多个第二区块420，且第一区块410包括多个第二子发光器件22以及连接于第二子发光器件22之间的第二连接件221，第二区块420包括多个第三子发光器件23以及连接于第三子发光器件23之间的第三连接件231；其中，第一公共电极41位于相邻的第一区块410之间和相邻的第二区块420之间，第二公共电极42位于相邻的第二区块420之间。如图2所示，第一区块410即为第一公共电极41所围成区域，例如可以包括四个b处所示的重复单元，第二区块420即为第一公共电极41和第二公共电极42所围成的区域，例如可以包括两个b处所示的重复单元。
在一种实施例中，第一子发光器件21、第二子发光器件22以及第三子发光器件23皆可以为无机发光二极管器件，且第一子发光器件21的发光颜色可以为红色，第二子发光器件22的发光颜色可以为绿色，而第三子发光器件23的发光颜色可以为蓝色，以实现显示模组的全彩显示。其中，由于蓝色光为高能光，因此，当蓝色光照射至第一子发光器件21上时，会导致第一子发光器件21在不需要进行发光时被激发出光，因此，本申请实施例中将第一子发光器件21设置于最下层，而第三子发光器件23设置于最上层，以降低蓝色光照射至第一子发光器件21上的概率，并增大第一子发光器件21和第三子发光器件23之间的距离，可以有效提高显示模组的出光效果和显示效果。
可以理解的是，由于无机发光二极管中红光的发光效率较低，因此，将位于最下层的第一子发光器件21设置为发红光，由于第一子发光器件21的面积最大，因此，可以补偿第一子发光器件21发红光的发光效率；此外，当第二子发光器件22和第三子发光器件23的侧边没有设置公共电极40和独立电极30时，第二子发光器件22的尺寸和第三子发光器件23的尺寸也可以朝着无公共电极40和独立电极30的侧边扩展，进而可以根据实际需求来增大第二子发光器件22和第三子发光器件23的发光面积。
在一种实施例中，第一子发光器件21可以包括P型GaP层/P型AlGaInP发光层/AlGaInP层/N型AlGaInP层/N型GaAs层，且P型可以是Mg掺杂的，N型可以是Si掺杂的，其中第一连接件211可以是由第一子发光器件21中延伸出的P型GaP层或者N型GaAs层所形成。
第二子发光器件22可以包括P型GaN层/InGaN发光层/N型GaN层，P型可以是Mg掺杂的，而N型可以是Si掺杂的，其中第二连接件221可以是由第二子发光器件22中延伸出的P型GaN层或者N型GaN层所形成。
第三子发光器件23可以包括P型GaN层/InGaN发光层/N型GaN层，P型通常是Mg掺杂的，而N型通常是Si掺杂的，其中第三连接件231可以是由第三子发光器件23中延伸出的P型GaN层或者N型GaN层所形成。
进一步地，在一种实施例中，第二键合层52包括第一布拉格反射层，以使红色光透过，并反射蓝色光。且第一布拉格反射层可以为氧化硅层和氧化钛层交替形成的堆叠膜层，并可以使得第一布拉格反射层的最外层皆为氧化硅层，则可以实现第二键合层52和第一布拉格反射层共用。即本申请实施例通过在第一子发光器件21上方形成第一布拉格反射层，可以对蓝色光进行反射，以避免蓝色光照射至第一子发光器件21上，进一步提高了发光器件20的出光效果和显示面板的显示效果。
在一种实施例中，第三键合层53包括第二布拉格反射层，以使红色光以及绿色光透过，并反射蓝色光。且第二布拉格反射层可以为氧化硅层和氧化钛层交替形成的堆叠膜层，并可以使得第一布拉格反射层的最外层皆为氧化硅层，则可以实现第三键合层53和第一布拉格反射层共用。即本申请实施例通过在第二子发光器件22上方形成第二布拉格反射层，可以对蓝色光进行反射，以避免蓝色光照射至第一子发光器件21和第二子发光器件22上，进一步提高了发光器件20的出光效果和显示面板的显示效果。
在本申请的另一种实施例中，请参照图12，第一键合层51复用为第一底部电极55，发光功能层还包括设置于第二键合层52和第二子发光器件22之间的第二底部电极56、以及设置于第三键合层53和第三子发光器件23之间的第三底部电极57，且第一子发光器件21设置于第一底部电极55上，第二子发光器件22设置于第二底部电极56上，第三子发光器件23设置于第三底部电极57上。
可以理解的是，第一底部电极55可以连续地设置在所有第一子发光器件21的下面；第二底部电极56会被第一公共电极41所分隔，因此，第一底部电极55可以连续地分布于第一区块410内；第三底部电极57会被第一公共电极41和第二公共电极42所分隔，因此，第三底部电极57可以连续地分布于第二区块420内。
其中，第一公共电极41与第一底部电极55连接，第二公共电极42与第二底部电极56连接，第三公共电极43与第三底部电极57连接。相对于图4至图7中采用公共电极40与连接件（例如第一连接件211、第二连接件221以及第三连接件231），本实施例可以进一步降低公共电极40与发光器件20之间的连接电阻，提高信号传输效果，提高发光器件20的出光效果和显示模组的显示效果。
需要说明的是，在本申请的一种实施例中，驱动电路单元中设置有公共信号线（图中并未示出），而本申请中第一公共电极41、第二公共电极42以及第三公共电极43彼此连接，并可以与驱动电路单元中的公共信号线连接，则第一子发光器件21依次通过第一连接件211、第一公共电极41连接至公共信号线，第二子发光器件22依次通过第二连接件221、第二公共电极42连接至公共信号线，第三子发光器件23依次通过第三连接件231、第三公共电极43连接至公共信号线，以实现信号的传输；此外，第一键合层51在起到键合连接第一子发光器件21的基础上，同样可以连接于公共信号线，使得第一子发光器件21可以通过第一键合层51连接至公共信号线。
在本申请的另一种实施例中，当第一键合层51复用为第一底部电极55、以及在第二键合层52和第二子发光器件22之间设置第二底部电极56、在第三键合层53和第三子发光器件23之间设置第三底部电极57时，则第一子发光器件21依次通过第一底部电极55、第一公共电极41连接至公共信号线，第二子发光器件22依次通过第二底部电极56、第二公共电极42连接至公共信号线，第三子发光器件23依次通过第三底部电极57、第三公共电极43连接至公共信号线，以实现信号的传输；此外，第一底部电极55还可以与公共信号线连接，使得第一子发光器件21可以通过第一底部电极55连接至公共信号线。
在一种实施例中，第二底部电极56和第三底部电极57的材料可以包括透明导电材料，例如ITO材料。
需要说明的是，本申请实施例中发光器件20中子发光器件的数量为至少两个，且上述实施例中发光器件20中子发光器件的数量为三个，在本申请的其他实施中，发光器件20中子发光器件的数量还可以为两个、四个或者更多，在此不作限定。
在本申请的另一种实施例中，如图13所示，发光器件20包括沿第一方向Y排列的两个子发光器件；多个独立电极包括与该两个子发光器件连接的两个独立电极；公共电极40包括分别与该两个子发光器件连接的第四公共电极44以及第五公共电极45；其中，多个发光器件20沿第二方向X1和第三方向X2呈阵列分布，多个第四公共电极44沿第二方向X1和第三方向X2进行排布，多个第五公共电极45沿第二方向X1和第三方向X2进行排布，且多个第四公共电极44和多个第五公共电极45相交叉排布，以构成网状结构，以有效减小公共电极40的电阻，其中，每个发光器件20的两侧边皆与公共电极40相邻。
需要说明的是，本实施例中独立电极30、公共电极40与发光器件20之间的连接方式皆可参照上述实施例中进行。
进一步地，与第四公共电极44相连接的子发光器件的发光颜色可以为绿色，与第五公共电极45相连接的子发光器件的发光颜色可以为蓝色，且还可以为其他颜色组合，并不限于此，本申请实施例仅以此为例，进行说明。
在本申请的另一种实施例中，请参照图14，发光器件20还可以包括沿第一方向Y排列的四个子发光器件，而多个独立电极包括与该四个子发光器件连接的四个独立电极；公共电极40包括分别与该四个子发光器件连接的第六公共电极46、第七公共电极47、第八公共电极48以及第九公共电极49；其中，第六公共电极46和第八公共电极48可以沿第三方向X2延伸，第七公共电极47和第九公共电极49可以沿第二方向X1延伸，且多个第六公共电极46、多个第七公共电极47、多个第八公共电极48以及多个第九公共电极49相交叉排布，以构成网状结构，可以有效降低公共电极40的电阻。
需要说明的是，与第六公共电极46相连接的子发光器件的发光颜色可以为红色，与第七公共电极47相连接的子发光器件的发光颜色可以为绿色，与第八公共电极48相连接的子发光器件的发光颜色可以为蓝色，与第九公共电极49相连接的子发光器件的发光颜色可以为黄色，且还可以为其他颜色组合，并不限于此，本申请实施例仅以此为例，进行说明。
进一步地，在一种实施例中，发光功能层还包括设置于覆盖层54上的多个透镜60，且多个透镜60可以与多个发光器件20一一对应设置，以对发光器件20的出光起到聚光效果，提高发光器件20的出光强度和显示模组的显示亮度，有效提高了显示模组的显示效果，并可以降低显示模组的功耗。
承上，本申请实施例通过将公共电极40设置在相邻的发光器件20之间，同时公共电极40沿第一方向Y与子发光器件连接，实现了公共电极40与子发光器件的连接，避免了发光器件20中台阶区域的设置，降低了工艺难度，并可以提高显示模组的良品率，提高显示模组的性能；此外，由于本申请实施例中不需要在发光器件20的侧壁处形成台阶，也不需要在台阶处留出间隙来与公共电极40保持距离，且公共电极40和独立电极30位于子发光器件的不同侧，因此，本申请实施例可以有效提高发光器件20的发光面积，提高开口率。
另外，本申请实施例还提供一种显示装置，该显示装置包括装置主体以及上述实施例中所述的显示模组，且该显示模组与装置主体组合为一体。
在一种实施例中，该装置主体可以包括框体、以及其他功能组件，例如传感器等。
本申请实施例提供的显示装置可以包括直视显示屏，用于家庭/办公投影仪和便携式电子产品，诸如智能手机、笔记本电脑、可穿戴电子设备、AR和VR眼镜的光引擎，以及视网膜投影。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种显示模组及显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种显示模组，其包括衬底以及设置于所述衬底上的发光功能层，所述发光功能层包括：
    多个发光器件，所述发光器件包括沿垂直于所述衬底的第一方向排列的至少两个子发光器件；
    多个独立电极，与各所述子发光器件连接；
    至少两个公共电极，设置于相邻的所述发光器件之间，且所述公共电极的数量大于或等于所述发光器件中所述子发光器件的数量；
    其中，所述公共电极沿所述第一方向连接于所述子发光器件，所述公共电极和所述独立电极位于所述子发光器件的不同侧，且每一所述子发光器件皆与所述公共电极电性连接。
  2. 根据权利要求1所述的显示模组，其中，所述发光器件包括沿所述第一方向排列的第一子发光器件和第二子发光器件，多个所述独立电极包括第一独立电极和第二独立电极，至少两个所述公共电极包括第一公共电极和第二公共电极；
    其中，所述第一独立电极和所述第一公共电极连接于所述第一子发光器件的不同侧，所述第二独立电极和所述第二公共电极连接于所述第二子发光器件的不同侧。
  3. 根据权利要求2所述的显示模组，其中，所述发光器件还包括沿所述第一方向位于所述第一子发光器件一侧或所述第二子发光器件一侧的第三子发光器件，多个所述独立电极包括与所述第三子发光器件连接的第三独立电极，多个所述公共电极包括沿所述第一方向与所述第三子发光器件连接的第三公共电极，且所述第三公共电极与所述第一公共电极、所述第二公共电极彼此相连接。
  4. 根据权利要求3所述的显示模组，其中，所述第一公共电极的数量、所述第二公共电极的数量以及所述第三公共电极的数量皆大于或等于1。
  5. 根据权利要求3所述的显示模组，其中，多个所述发光器件沿平行于所述衬底的第二方向和第三方向排布，所述第一公共电极沿所述第二方向和/或所述第三方向延伸，所述第二公共电极沿所述第二方向和/或所述第三方向延伸，所述第三公共电极沿所述第二方向和/或所述第三方向延伸。
  6. 根据权利要求3所述的显示模组，其中，所述第一子发光器件位于所述衬底和所述第二子发光器件之间，所述第三子发光器件位于所述第二子发光器件远离所述第一子发光器件的一侧，所述第一公共电极沿所述第一方向上的厚度大于所述第二公共电极沿所述第一方向上的厚度，所述第三公共电极沿所述第一方向上的厚度小于所述第二公共电极沿所述第一方向上的厚度。
  7. 根据权利要求6所述的显示模组，其中，所述衬底包括驱动电路单元，所述发光功能层还包括设置于所述衬底和所述第一子发光器件之间的第一键合层、设置于所述第一子发光器件和所述第二子发光器件之间的第二键合层、设置于所述第二子发光器件和所述第三子发光器件之间的第三键合层、以及设置于所述第三子发光器件远离所述第二子发光器件一侧的覆盖层；
    其中，所述第一公共电极沿所述第一方向穿过所述覆盖层、所述第三键合层以及所述第二键合层，并与所述第一子发光器件连接，所述第二公共电极沿所述第一方向穿过所述覆盖层以及所述第三键合层，并与所述第二子发光器件连接，所述第三公共电极沿所述第一方向穿过所述覆盖层，并与所述第三子发光器件连接，且所述第一公共电极、所述第二公共电极以及所述第三公共电极皆与所述驱动电路单元连接。
  8. 根据权利要求7所述的显示模组，其中，所述发光功能层还包括连接于相邻的所述第一子发光器件之间的第一连接件、连接于相邻的所述第二子发光器件之间的第二连接件、以及连接于相邻的所述第三子发光器件之间的第三连接件，且所述第一公共电极与所述第一连接件连接，所述第二公共电极与所述第二连接件连接，所述第三公共电极与所述第三连接件连接；
    其中，任意相邻两个所述第一子发光器件之间连接有所述第一连接件，部分所述第二子发光器件之间连接有所述第二连接件，部分所述第三子发光器件之间连接有所述第三连接件。
  9. 根据权利要求8所述的显示模组，其中，所述发光功能层包括多个第一区块和多个第二区块，且所述第一区块包括多个所述第二子发光器件以及连接于所述第二子发光器件之间的所述第二连接件，所述第二区块包括多个所述第三子发光器件以及连接于所述第三子发光器件之间的所述第三连接件；
    其中，所述第一公共电极位于相邻的所述第一区块之间和相邻的所述第二区块之间，所述第二公共电极位于相邻的所述第二区块之间。
  10. 根据权利要求7所述的显示模组，其中，所述第一键合层复用为第一底部电极，所述发光功能层还包括设置于所述第二键合层和所述第二子发光器件之间的第二底部电极、以及设置于所述第三键合层和所述第三子发光器件之间的第三底部电极，且所述第一子发光器件设置于所述第一底部电极上，所述第二子发光器件设置于所述第二底部电极上，所述第三子发光器件设置于所述第三底部电极上；
    其中，所述第一公共电极与第一底部电极连接，所述第二公共电极与所述第二底部电极连接，所述第三公共电极与所述第三底部电极连接。
  11. 根据权利要求7所述的显示模组，其中，所述第一子发光器件的发光颜色为红色，所述第二子发光器件的发光颜色为绿色，所述第三子发光器件的发光颜色为蓝色。
  12. 根据权利要求11所述的显示模组，其中，所述第二键合层包括第一布拉格反射层，以使红色光透过，并反射蓝色光。
  13. 根据权利要求11所述的显示模组，其中，所述第三键合层包括第二布拉格反射层，以使红色光以及绿色光透过，并反射蓝色光。
  14. 根据权利要求6所述的显示模组，其中，所述第一公共电极在所述衬底上的正投影宽度大于所述第二公共电极在所述衬底上的正投影宽度，所述第二公共电极在所述衬底上的正投影宽度大于所述第三公共电极在所述衬底上的正投影宽度。
  15. 根据权利要求6所述的显示模组，其中，所述第二子发光器件在所述衬底上的正投影位于所述第一子发光器件在所述衬底上的正投影内，或者，所述第二子发光器件在所述衬底上的正投影与所述第一子发光器件在所述衬底上的正投影相重合；
    所述第三子发光器件在所述衬底上的正投影位于所述第一子发光器件在所述衬底上的正投影内，或者，所述第三子发光器件在所述衬底上的正投影与所述第一子发光器件在所述衬底上的正投影相重合。
  16. 根据权利要求1所述的显示模组，其中，所述子发光器件的至少一侧设置有所述公共电极。
  17. 根据权利要求16所述的显示模组，其中，所述公共电极的数量为多个，且多个所述公共电极相连接，以形成网状结构。
  18. 一种显示装置，所述显示装置包括装置主体以及显示模组，且所述显示模组与所述装置主体组合为一体；
    所述显示模组包括衬底以及设置于所述衬底上的发光功能层，所述发光功能层包括：
    多个发光器件，所述发光器件包括沿垂直于所述衬底的第一方向排列的至少两个子发光器件；
    多个独立电极，与各所述子发光器件连接；
    至少两个公共电极，设置于相邻的所述发光器件之间，且所述公共电极的数量大于或等于所述发光器件中所述子发光器件的数量；
    其中，所述公共电极沿所述第一方向连接于所述子发光器件，所述公共电极和所述独立电极位于所述子发光器件的不同侧，且每一所述子发光器件皆与所述公共电极电性连接。
  19. 根据权利要求18所述的显示装置，其中，所述发光器件包括沿所述第一方向排列的第一子发光器件和第二子发光器件，多个所述独立电极包括第一独立电极和第二独立电极，至少两个所述公共电极包括第一公共电极和第二公共电极；
    其中，所述第一独立电极和所述第一公共电极连接于所述第一子发光器件的不同侧，所述第二独立电极和所述第二公共电极连接于所述第二子发光器件的不同侧。
  20. 根据权利要求19所述的显示装置，其中，所述发光器件还包括沿所述第一方向位于所述第一子发光器件一侧或所述第二子发光器件一侧的第三子发光器件，多个所述独立电极包括与所述第三子发光器件连接的第三独立电极，多个所述公共电极包括沿所述第一方向与所述第三子发光器件连接的第三公共电极，且所述第三公共电极与所述第一公共电极、所述第二公共电极彼此相连接。
PCT/CN2023/104260 2023-06-21 2023-06-29 显示模组及显示装置 Ceased WO2024259745A1 (zh)

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