Display module and display device

Abstract

The invention discloses a display module and a display device. The light-emitting device comprises a substrate and a light-emitting functional layer arranged on the substrate, and the light-emitting functional layer comprises a plurality of light-emitting devices, a plurality of independent electrodes and at least two common electrodes; the light-emitting device comprises at least two light-emitting sub-devices arranged in the first direction perpendicular to the substrate. The plurality of independent electrodes are connected with the sub light-emitting devices; the at least two common electrodes are arranged between the adjacent light-emitting devices, and the number of the common electrodes is greater than or equal to the number of sub light-emitting devices in the light-emitting devices; wherein the common electrode is connected to the sub-light-emitting devices in the first direction, the common electrode and the independent electrode are located on different sides of the sub-light-emitting devices, and each sub-light-emitting device is electrically connected with the common electrode. According to the invention, the process difficulty can be reduced, the yield of the display module can be improved, the light-emitting area of the light-emitting device can be effectively improved, and the aperture opening ratio can be improved.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] 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.

[0003] At present, in order to realize other colors or full-color display of inorganic light-emitting diodes, it is often necessary to stack multiple inorganic light-emitting diodes together in a horizontal stacking or a vertical stacking manner, wherein vertical stacking has the advantage of significantly improving PPI compared with horizontal stacking; however, in order to realize vertical stacking of multiple inorganic light-emitting diodes, it is often necessary to form a step on the side of the multiple vertically stacked inorganic light-emitting diode devices to accommodate a common electrode, but if the size of the step is too large, the arrangement space of the inorganic light-emitting diode device will be reduced, and if the size of the step is too small, the process difficulty of the common electrode will be increased and the yield rate of the common electrode will be reduced. Summary of the invention

[0004] The embodiments of the present invention provide a display module and a display device, which can avoid the setting of steps, reduce the process difficulty of common electrodes, increase the yield rate of common electrodes, and improve device performance.

[0005] An embodiment of the present invention 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:

[0006] A plurality of light emitting devices, each light emitting device comprising at least two sub-light emitting devices arranged along a first direction perpendicular to the substrate;

[0007] A plurality of independent electrodes connected to each of the sub-light emitting devices;

[0008] 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;

[0009] 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.

[0010] In one embodiment of the present invention, the light emitting device comprises a first sub-light emitting device and a second sub-light emitting device arranged along the first direction, the plurality of independent electrodes comprise a first independent electrode and a second independent electrode, and at least two of the common electrodes comprise a first common electrode and a second common electrode;

[0011] 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.

[0012] In one embodiment of the present invention, 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, and the third common electrode is connected to the first common electrode and the second common electrode.

[0013] In an embodiment of the present invention, 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.

[0014] In one embodiment of the present invention, 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.

[0015] In one embodiment of the present invention, 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, and 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.

[0016] In one embodiment of the present invention, the substrate includes a driving circuit unit, and 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;

[0017] Among them, 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, and the first common electrode, the second common electrode and the third common electrode are all connected to the driving circuit unit.

[0018] In one embodiment of the present invention, 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;

[0019] 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, and the third connecting member is connected between some of the third sub-light emitting devices.

[0020] In one embodiment of the present invention, the light-emitting functional layer includes a plurality of first blocks and a plurality of second blocks, and 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, and 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;

[0021] 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.

[0022] In one embodiment of the present invention, the first bonding layer is reused as a first bottom electrode, the light-emitting functional layer further comprises 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;

[0023] The first common electrode is connected to the first bottom electrode, the second common electrode is connected to the second bottom electrode, and the third common electrode is connected to the third bottom electrode.

[0024] In an embodiment of the present invention, 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, and the light emitting color of the third sub-light emitting device is blue.

[0025] In an embodiment of the present invention, the second bonding layer includes a first Bragg reflection layer to allow red light to pass through and reflect blue light.

[0026] In an embodiment of the present invention, the third bonding layer includes a second Bragg reflection layer to allow red light and green light to pass through and reflect blue light.

[0027] In an embodiment of the present invention, 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.

[0028] In one embodiment of the present invention, 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;

[0029] 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.

[0030] In an embodiment of the present invention, the common electrode is disposed on at least one side of the sub-light emitting device.

[0031] In an embodiment of the present invention, there are multiple common electrodes, and the multiple common electrodes are connected to form a mesh structure.

[0032] According to the above-mentioned purpose of the present invention, an embodiment of the present invention further provides a display device, wherein the display device comprises a device body and the display module, and the display module is integrated with the device body.

[0033] Beneficial effects of the present invention: The present invention 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 can improve the yield rate of the display module and improve the performance of the display module; in addition, since the present invention 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 invention can effectively increase the light-emitting area of ​​the light-emitting device and improve the aperture ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0035] Figure 1 A structural schematic diagram of a display module in the related art;

[0036] Figure 2 A schematic diagram of a planar structure of a display module provided by an embodiment of the present invention;

[0037] Figure 3 For the embodiment of the present invention Figure 2 The enlarged structural diagram at a in the middle;

[0038] Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of a cross-sectional structure taken along line AA;

[0039] Figure 5 For the embodiment of the present invention Figure 3 A schematic diagram of a cross-sectional structure taken along line BB;

[0040] Figure 6 For the embodiment of the present invention Figure 3 A schematic diagram of a cross-sectional structure taken along line CC;

[0041] Figure 7 For the embodiment of the present invention Figure 3 A schematic diagram of a cross-sectional structure taken along line DD;

[0042] Figure 8 For the embodiment of the present invention Figure 2 The enlarged structural diagram at b in the middle;

[0043] Fig. 9 Another schematic diagram of the planar structure of the display module provided by the embodiment of the present invention;

[0044] Fig.10Another schematic diagram of the planar structure of the display module provided by the embodiment of the present invention;

[0045] Fig.11 Another schematic diagram of the planar structure of the display module provided by the embodiment of the present invention;

[0046] Fig.12 For the embodiment of the present invention Figure 3 Another schematic diagram of the cross-section structure taken along line AA;

[0047] Fig.13 Another schematic diagram of the planar structure of the display module provided by the embodiment of the present invention;

[0048] Fig.14 Another schematic diagram of the planar structure of the display module provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0049] In the following detailed description, only certain embodiments of the present invention are shown and described simply by way of illustration. As those skilled in the art will appreciate, the embodiments described herein may be modified in various ways without departing from the spirit or scope of the present invention.

[0050] In the drawings, the thickness of layers, films, panels, regions, etc. may be exaggerated for clarity and for better understanding and ease of description. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” another element, it can be directly on the other element or intervening elements may also be present.

[0051] In addition, unless explicitly described to the contrary, 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. Further, in the specification, 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.

[0052] It will be understood that, although the terms "first", "second", etc. may be used herein to describe various components, these components should not be limited by these terms. These components are only used to distinguish one component from another component.

[0053] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0054] It will also be understood that the terms “comprises” and / or “comprising” as used herein specify the presence of stated features or components, but do not exclude the presence or addition of one or more other features or components.

[0055] It will be understood that when a layer, region or component is referred to as being “formed on” another layer, region or component, it may be directly or indirectly formed on the other layer, region or component. For example, intervening layers, regions or components may be present.

[0056] In the following examples, 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. For example, 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.

[0057] Please refer to Figure 1 At present, in a vertically stacked LED display module, 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. For example, the first LED 2 is connected to a first independent electrode 5, the second LED 3 is connected to a second independent electrode 6, and 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. However, since 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 disturbance, 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, Figure 1 The display module shown has large process limitations and is difficult to meet the development of display technology.

[0058] Please refer to Figures 2 to 7 An embodiment of the present invention provides a display module, which includes a substrate 10 and a light-emitting functional layer arranged on the substrate 10, and 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.

[0059] Among them, 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.

[0060] Furthermore, 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 .

[0061] During the implementation and application process, the embodiment of the present invention realizes the connection between the common electrode 40 and the sub-light-emitting device by setting the common electrode 40 between adjacent light-emitting devices 20, and at the same time connecting the common electrode 40 to the sub-light-emitting device along the first direction Y, thereby avoiding the setting of the step area in the light-emitting device 20, reducing the process difficulty, and improving the yield rate of the display module and the performance of the display module; in addition, since the embodiment of the present invention 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 invention can effectively increase the light-emitting area of ​​the light-emitting device 20 and improve the aperture ratio.

[0062] Specifically, please continue to combine Figures 2 to 7 The display module provided by the embodiment of the present invention includes a substrate 10 and a light-emitting functional layer arranged on the substrate 10 .

[0063] 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.

[0064] 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.

[0065] In one embodiment, 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.

[0066] 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 second sub-light-emitting device 22 away from the first sub-light-emitting device 21 through the third bonding layer 53.

[0067] In one embodiment, 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.

[0068] It should be noted that, in one embodiment, the substrate 10 may be a silicon material substrate, and the driving circuit unit may be arranged on the substrate 10. In this case, 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.

[0069] 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.

[0070] Among them, 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.

[0071] 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.

[0072] In the embodiment of the present invention, 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, thereby 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 invention does not require the formation of steps at the side walls of the light-emitting device 20, nor does it require the leaving of gaps at the steps to maintain a distance from the common electrode 40, the embodiment of the present invention can effectively increase the light-emitting area of ​​the light-emitting device 20 and improve the aperture ratio.

[0073] It should be noted that, relative to Figure 1 In the display module shown, in the process of forming stacked LEDs, it is still necessary to set gaps between adjacent stacked LEDs to separate them. In the embodiment of the present invention, the above-mentioned common electrode 40 can be set in the gap between adjacent light-emitting devices 20, and no additional space is required to set the common electrode 40. Therefore, the embodiment of the present invention can further increase the light-emitting area of ​​the light-emitting device 20 and improve the aperture ratio.

[0074] In one embodiment, 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. Figure 2 shown.

[0075] 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, and 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.

[0076] It should be noted that the 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.

[0077] In one embodiment, see Figure 2 , including 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.

[0078] In one embodiment, along the third direction X2, at least one light emitting device 20 arranged along the third direction X2 is disposed 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 disposed between the adjacent third common electrodes 43 and the first common electrodes 41. In the embodiment of the present invention, two light emitting devices 20 arranged along the third direction X2 are disposed between the adjacent second common electrodes 42 and the first common electrodes 41, and two light emitting devices 20 arranged along the second direction X1 are disposed 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 Figure 8 The repeating units shown are each composed of four light emitting devices 20 .

[0079] Please combine Figure 3 and Figure 8 In each repeating unit, 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. In the embodiment of the present invention, 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.

[0080] It should be noted that 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.

[0081] It is understood that when at least one side of each light emitting device 20 is provided with a common electrode 40, 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. For example, when the number of sub-light emitting devices in the light emitting device 20 is three, the shape of each sub-light emitting device or the light emitting device 20 can be a triangle, a quadrilateral or other polygon, for example Figure 2 As shown in FIG. 1 , the light emitting device 20 is in the shape of a quadrilateral.

[0082] In one embodiment, see Fig. 9 The light-emitting device 20 may also be a triangle, 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) may be provided on the other side of the light-emitting device 20, wherein the arrangement direction of each common electrode 40 may 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 side of the triangular light-emitting device 20.

[0083] In another embodiment, please refer to Fig.10 The light-emitting device 20 is also triangular in shape, 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 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.

[0084] In another embodiment, please refer to Fig.11, 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 another side of the light emitting device 20 can be provided with an independent electrode 30 (not shown in the figure), 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, 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 The pole 42 and the third common electrode 43 are both arranged opposite to the side of the triangular light-emitting device 20. Specifically, 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.

[0085] Please combine Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 7 ,in Figure 4 for Figure 3 A schematic diagram of a cross-sectional structure cut along line AA in the figure. Figure 5 for Figure 3 A schematic diagram of a cross-sectional structure cut along line BB in the figure. Figure 6 for Figure 3 A schematic diagram of a cross-sectional structure cut along the CC line, Figure 7 for Figure 3 A schematic diagram of a cross-sectional structure taken along line DD in FIG.

[0086] 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. Figure 5 and Figure 7 As shown; the third independent electrode 33 is disposed 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 Figure 5 shown.

[0087] In one embodiment, 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.

[0088] Furthermore, the first common electrode 41 passes through the cover 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, such as Figures 4 to 7 The second common electrode 42 passes through the cover 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 FIG. Figure 6 and Figure 7 The third common electrode 43 passes through the cover layer 54 along the first direction Y and is connected to the third sub-light emitting device 23, as shown in FIG. Figure 4 and Figure 5 Therefore, 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.

[0089] Furthermore, since the via hole through which the first common electrode 41 passes is the deepest, and the via hole through which the second common electrode 42 passes is the second deepest, and the via hole through which the third common electrode 43 passes is the shallowest, 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, and 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.

[0090] In addition, if Figure 2 As shown, there is an intersection between the first common electrode 41, the second common electrode 42 and the third common electrode 43, wherein the first common electrode 41 can be arranged at the intersection of the first common electrode 41 and the second common electrode 42, that is, the first common electrode 41 is arranged 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, 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 arranged at the intersection of the first common electrode 41 and the third common electrode 43, that is, the third common electrode 43 is arranged 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 arranged at the intersection of the second common electrode 42 and the third common electrode 43, that is, the third common electrode 43 is arranged at the intersection of the second common electrode 42 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.

[0091] In other embodiments of the present invention, 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, and 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.

[0092] like Figure 4 , Figure 6 as well as Figure 7 As shown, when the common electrode 40 and the independent electrode 30 are not provided between two adjacent light-emitting devices 20, 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, for example Figure 4 In the example, the two first sub-light emitting devices 21 located in the middle, and no common electrode 40 is provided between the two first sub-light emitting devices 21, can expand in a direction close to each other, so that the sizes of the two first sub-light emitting devices 21 increase; the two second sub-light emitting devices 22 located in the middle, and no common electrode 40 is provided between the two second sub-light emitting devices 22, can expand in a direction close to each other, so that the sizes of the two second sub-light emitting devices 22 increase; similarly, for example Figure 4 The two third sub-light emitting devices 23 on the right are provided with a third common electrode 43 between them. Since the width of the third common electrode 43 is small, the two third sub-light emitting devices 23 can be extended toward each other, so that the sizes of the two third sub-light emitting devices 23 are increased. Figure 6 In the embodiment, the sizes of the two first sub-light emitting devices 21 can be expanded in a direction close to each other, the sizes of the two second sub-light emitting devices 22 can be expanded in a direction close to each other, and the sizes of the two third sub-light emitting devices 23 can be expanded in a direction close to each other, so that the sizes of the first sub-light emitting device 21, the second sub-light emitting device 22 and the third sub-light emitting device 23 are increased; for example Figure 7In the embodiment, the size of the two third sub-light-emitting devices 23 can be expanded toward the direction of the other 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 invention, by designing the structure and position of the common electrode 40, the light-emitting area and aperture ratio of the light-emitting device 20 can be effectively improved.

[0093] It is understandable that when the common electrode 40 and the independent electrode 30 are not provided on the side of the light emitting device 20, or when the third common electrode 43 is provided, the size of the light emitting device 20 can be increased according to actual needs. Figure 5 As shown in FIG. 1 , the sizes of the first sub-light emitting device 21, the second sub-light emitting device 22, and the third sub-light emitting device 23 decrease along the direction from the substrate 10 to the light emitting functional layer; however, since steps and avoidance gaps do not need to be formed on the side surfaces of each light emitting device 20 in the embodiment of the present invention, the light emitting area of ​​the light emitting device 20 in the embodiment of the present invention is relatively Figure 1 The light emitting area of ​​the LED in the display module shown can be effectively increased.

[0094] In one embodiment, 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.

[0095] In one embodiment, 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.

[0096] Among them, since the thickness of the first common electrode 41 is relatively large, it will separate the second connecting member 221 and the third connecting member 231, and the second common electrode 42 will also separate the third connecting member 231. Therefore, in this embodiment, 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.

[0097] Specifically, the light-emitting functional layer includes a plurality of first blocks 410 and a plurality of second blocks 420, and 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, and 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 between adjacent second blocks 420, and the second common electrode 42 is located between adjacent second blocks 420. Figure 2 As shown, the first block 410 is the area surrounded by the first common electrode 41, and may include, for example, four repeating units shown at b. The second block 420 is the area surrounded by the first common electrode 41 and the second common electrode 42, and may include, for example, two repeating units shown at b.

[0098] In one embodiment, 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. Among them, since blue light is high-energy light, when blue light is irradiated onto 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. Therefore, in the embodiment of the present invention, 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 onto 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.

[0099] It can be understood that since the luminous efficiency of red light in inorganic light-emitting diodes is relatively low, 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.

[0100] In one embodiment, 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.

[0101] 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.

[0102] 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.

[0103] Furthermore, in one embodiment, 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, by forming the first Bragg reflection layer above the first sub-light-emitting device 21, the embodiment of the present invention can reflect blue light to prevent the blue light from irradiating the first sub-light-emitting device 21, further improving the light emitting effect of the light-emitting device 20 and the display effect of the display panel.

[0104] In one embodiment, 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 invention can reflect blue light by forming a second Bragg reflection layer above the second sub-light emitting device 22 to prevent the blue light from irradiating the first sub-light emitting device 21 and the second sub-light emitting device 22, further improving the light emitting effect of the light emitting device 20 and the display effect of the display panel.

[0105] In another embodiment of the present invention, please refer to Fig.12The first bonding layer 51 is reused as a first bottom electrode 55, and 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.

[0106] It can be understood that the 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.

[0107] 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, and the third common electrode 43 is connected to the third bottom electrode 57. Figures 4 to 7 The common electrode 40 and the connecting members (such as the first connecting member 211, the second connecting member 221 and the third connecting member 231) are used in this embodiment. The connection resistance between the common electrode 40 and the light-emitting device 20 can be further reduced, the signal transmission effect can be improved, and the light emitting effect of the light-emitting device 20 and the display effect of the display module can be improved.

[0108] It should be noted that, in one embodiment of the present invention, 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 invention 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 via 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 via 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 via 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 via the first bonding layer 51.

[0109] In another embodiment of the present invention, when the first bonding layer 51 is reused as the first bottom electrode 55, and the second bottom electrode 56 is set between the second bonding layer 52 and the second sub-light-emitting device 22, and the third bottom electrode 57 is set between the third bonding layer 53 and the third sub-light-emitting device 23, 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, and 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; in addition, 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.

[0110] In one embodiment, 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.

[0111] It should be noted that the number of sub-light-emitting devices in the light-emitting device 20 in the embodiment of the present invention 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 invention, 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.

[0112] In another embodiment of the present invention, Fig.13 As shown, the light-emitting device 20 includes two sub-light-emitting devices arranged along a first direction Y; a plurality of independent electrodes include two independent electrodes connected to the two sub-light-emitting devices; a 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 plurality of light-emitting devices 20 are distributed in an array along the second direction X1 and the third direction X2, a plurality of fourth common electrodes 44 are arranged along the second direction X1 and the third direction X2, a plurality of fifth common electrodes 45 are arranged along the second direction X1 and the third direction X2, and a plurality of fourth common electrodes 44 and a plurality of fifth common electrodes 45 are arranged crosswise 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.

[0113] It should be noted that the 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.

[0114] Furthermore, the light-emitting color of the sub-light-emitting device connected to the fourth common electrode 44 can be green, and the light-emitting color of the sub-light-emitting device connected to the fifth common electrode 45 can be blue, or other color combinations, which are not limited to this. The embodiment of the present invention only takes this as an example for explanation.

[0115] In another embodiment of the present invention, please refer to Fig.14 The light-emitting device 20 may further include four sub-light-emitting devices arranged along the first direction Y, and the plurality of 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 may extend along the third direction X2, the seventh common electrode 47 and the ninth common electrode 49 may extend along the second direction X1, and a plurality of sixth common electrodes 46, a plurality of seventh common electrodes 47, a plurality of eighth common electrodes 48 and a plurality of ninth common electrodes 49 are cross-arranged to form a mesh structure, which can effectively reduce the resistance of the common electrode 40.

[0116] It should be noted that 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, and 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 these. The embodiments of the present invention are only taken as an example for illustration.

[0117] Furthermore, in one embodiment, 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.

[0118] As mentioned above, the embodiment of the present invention realizes the connection between the common electrode 40 and the sub-light-emitting device by setting 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 avoiding the setting of the step area in the light-emitting device 20, reducing the process difficulty, and improving the yield rate of the display module and the performance of the display module; in addition, since the embodiment of the present invention 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 invention can effectively increase the light-emitting area of ​​the light-emitting device 20 and improve the aperture ratio.

[0119] In addition, an embodiment of the present invention 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.

[0120] In one embodiment, the device body may include a frame, and other functional components, such as sensors, etc.

[0121] The display device provided by the embodiments of the present invention 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.

[0122] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0123] A display module and a display device provided by an embodiment of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display module, characterized in that: It includes a substrate and a light-emitting functional layer arranged on the substrate, wherein the light-emitting functional layer includes: A plurality of light emitting devices, 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.

2. The display module according to claim 1, characterized in that: The light emitting device comprises a first sub-light emitting device and a second sub-light emitting device arranged along the first direction, the plurality of independent electrodes comprises a first independent electrode and a second independent electrode, and at least two common electrodes comprises 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.

3. The display module according to claim 2, characterized in that: 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, and the third common electrode is connected to the first common electrode and the second common electrode.

4. The display module according to claim 3, characterized in that: 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.

5. The display module according to claim 3, characterized in that: 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.

6. The display module according to claim 3, characterized in that: 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, and 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.

7. The display module according to claim 6, characterized in that: The substrate includes a driving circuit unit, and the light-emitting functional layer also includes a first bonding layer arranged between the substrate and the first sub-light-emitting device, a second bonding layer arranged between the first sub-light-emitting device and the second sub-light-emitting device, a third bonding layer arranged between the second sub-light-emitting device and the third sub-light-emitting device, and a covering layer arranged on a side of the third sub-light-emitting device away from the second sub-light-emitting device; Among them, 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, and the first common electrode, the second common electrode and the third common electrode are all connected to the driving circuit unit.

8. The display module according to claim 7, characterized in that: 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, and the third connecting member is connected between some of the third sub-light emitting devices.

9. The display module according to claim 8, characterized in that: The light-emitting functional layer includes a plurality of first blocks and a plurality of second blocks, and 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, and 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.

10. The display module according to claim 7, characterized in that: 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, and the third common electrode is connected to the third bottom electrode.

11. The display module according to claim 7, characterized in that: 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, and the light emitting color of the third sub-light emitting device is blue.

12. The display module according to claim 11, characterized in that: The second bonding layer includes a first Bragg reflection layer to transmit red light and reflect blue light.

13. The display module according to claim 11, characterized in that: The third bonding layer includes a second Bragg reflection layer to transmit red light and green light and reflect blue light.

14. The display module according to claim 6, characterized in that: 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.

15. The display module according to claim 6, characterized in that: 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.

16. The display module according to claim 1, characterized in that: The common electrode is disposed on at least one side of the sub-light emitting device.

17. The display module according to claim 16, characterized in that: There are multiple common electrodes, and the multiple common electrodes are connected to form a mesh structure.

18. A display device, characterized in that: The display device comprises a device body and a display module as described in any one of claims 1 to 17, and the display module is integrated with the device body.

Images