Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, relates to the technical field of display, and aims to solve the problem of serious visual angle color cast of vertically stacked Micro LEDs in related technologies. The display panel comprises a substrate, a first light-emitting device, a second light-emitting device and a third light-emitting device, wherein the first light-emitting device, the second light-emitting device and the third light-emitting device are sequentially arranged on the substrate in the first direction, and the light-emitting colors of the first light-emitting device, the second light-emitting device and the third light-emitting device are different from one another; at least one of the first light-emitting device and the second light-emitting device comprises a plurality of light-emitting units arranged at intervals, the arrangement direction of the light-emitting units is perpendicular to the first direction, the light-emitting units are Nano LEDs, and the third light-emitting device is Micro LEDs.

Description

Technical Field

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

[0002] Micro LEDs are small and bright, so they are widely used in the field of display technology. For example, vertically stacking Micro LEDs with different luminous colors can achieve full-color display.

[0003] However, because Micro LEDs of different luminous colors are stacked vertically, the luminous centers of Micro LEDs in the vertical direction are inconsistent. When users observe at an angle, the color ratio of Micro LEDs of different luminous colors at different observation angles changes, which leads to serious color deviation in visual color. Summary of the invention

[0004] The embodiments of the present application provide a display panel and a display device to solve the problem of serious color deviation of vertically stacked Micro LEDs in the related art.

[0005] On the one hand, an embodiment of the present application provides a display panel, comprising: a substrate and a first light-emitting device, a second light-emitting device and a third light-emitting device arranged on the substrate in sequence along a first direction, the light-emitting colors of the first light-emitting device, the second light-emitting device and the third light-emitting device are different from each other; at least one of the first light-emitting device and the second light-emitting device comprises a plurality of light-emitting units arranged at intervals, the arrangement direction of the plurality of light-emitting units is perpendicular to the first direction, the light-emitting unit is a Nano LED, and the third light-emitting device is a Micro LED.

[0006] In some embodiments, the first light-emitting device includes a plurality of first light-emitting units disposed at intervals, and an arrangement direction of the plurality of first light-emitting units is perpendicular to the first direction; the second light-emitting device includes a plurality of second light-emitting units disposed at intervals, and an arrangement direction of the plurality of second light-emitting units is perpendicular to the first direction, and the first light-emitting unit and the second light-emitting unit are Nano LEDs.

[0007] In some embodiments, an arrangement density of the plurality of first light-emitting units in the first light-emitting device is less than an arrangement density of the plurality of second light-emitting units in the second light-emitting device.

[0008] In some embodiments, each of the light-emitting units includes a first electrode, a first semiconductor layer, a light-emitting layer, a second semiconductor layer and a second electrode stacked in sequence, the first electrodes of multiple light-emitting units are interconnected, and the second electrodes of multiple light-emitting units are interconnected.

[0009] In some embodiments, a passivation layer is further disposed between the first electrode and the second electrode, and the passivation layer is disposed around the first semiconductor layer, the light emitting layer, and the second semiconductor layer.

[0010] In some embodiments, the third light emitting device is a blue light emitting device, and one of the first light emitting device and the second light emitting device is a red light emitting device, and the other is a green light emitting device.

[0011] In some embodiments, center lines of the first light emitting device, the second light emitting device, and the third light emitting device coincide with each other.

[0012] In some embodiments, each of the light-emitting units includes a first electrode, a first semiconductor layer, a light-emitting layer, a second semiconductor layer, and a second electrode stacked in sequence in a direction away from the substrate; the third light-emitting device includes a third electrode, a third semiconductor layer, a light-emitting functional layer, a fourth semiconductor layer, and a fourth electrode stacked in sequence; wherein the first electrode in the first light-emitting device is a reflective electrode, and the second electrode in the first light-emitting device, the first electrode and the second electrode in the second light-emitting device, and the third electrode and the fourth electrode in the third light-emitting device are all transparent electrodes.

[0013] In some embodiments, the display panel further includes a lens, and the lens is disposed on a side of the third light emitting device away from the substrate.

[0014] On the other hand, an embodiment of the present application further provides a display device, which includes the display panel described in any of the above embodiments.

[0015] With respect to the display panel provided in the embodiment of the present application, since the third light-emitting device is a Micro LED and at least one of the first light-emitting device and the second light-emitting device includes a plurality of Nano LEDs, the light pattern of the light emitted by at least one of the first light-emitting device and the second light-emitting device is more concentrated, thereby helping to avoid the problem of serious visual color deviation caused by a large change in the combined color ratio due to the large intensity of the light emitted by at least one of the first light-emitting device and the second light-emitting device at an inclined viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1is a schematic structural diagram of a light emitting device in the related art;

[0017] Figure 2 is a schematic structural diagram of a light emitting device according to some embodiments of the present application;

[0018] Figure 3 is a schematic structural diagram of a first light-emitting device or a second light-emitting device according to some embodiments of the present application;

[0019] Figure 4 is a schematic structural diagram of a third light-emitting device according to some embodiments of the present application;

[0020] Figure 5 It is a schematic diagram of the light output intensity of a light emitting device with Nano LED and Micro LED at different viewing angles;

[0021] Figure 6 is a partial structural schematic diagram of a first light-emitting device according to some embodiments of the present application;

[0022] Figure 7 is a partial structural schematic diagram of a second light-emitting device according to some embodiments of the present application;

[0023] Figure 8 It is a schematic diagram of light emission simulation of a light emitting device in the related art;

[0024] Fig. 9 is a schematic diagram of light emission simulation of a light emitting device provided in some embodiments of the present application;

[0025] Fig.10 is a schematic diagram of the structure of a display panel provided in some embodiments of the present application;

[0026] Fig.11 It is a schematic diagram of the structure of a display device provided in some embodiments of the present application. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0028] In the description of this application, it should be understood that the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise clearly defined.

[0029] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0030] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0031] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present application.

[0032] The various embodiments of the present application are similar, and features in different embodiments and / or different examples may be combined with each other.

[0033] In related technologies, such as Figure 1 As shown, the light emitting component generally includes a red light emitting device 01, a green light emitting device 02, and a blue light emitting device 03 which are vertically stacked, so that full-color display can be achieved. In addition, the red light emitting device 01, the green light emitting device 02, and the blue light emitting device 03 all use Micro LEDs, and therefore have substantially the same light emitting pattern (e.g. Figure 1 However, the light emitting centers of the red light emitting device 01, the green light emitting device 02, and the blue light emitting device 03 have a height difference in the vertical direction, which causes the user to tilt the viewing angle (such as Figure 1 When observing from the first position 04 shown in FIG. 1 , the light output intensities of the red light emitting device 01, the green light emitting device 02, and the blue light emitting device 03 are mismatched. Figure 1 When observing from the first position 04 shown in FIG. 1 , the color ratio of the red light emitting device 01, the green light emitting device 02 and the blue light emitting device 03 at this viewing angle is greater than that of the user at the normal viewing angle (such as Figure 1 The second position (05) shown in the figure changes significantly when observed, which leads to a serious problem of color deviation.

[0034] In addition, Micro LED has the characteristics of small size and high brightness, so it has a strong dependence in VR (Virtual Reality) and AR (Augmented Reality) displays. In the field of AR (Augmented Reality) display technology, since the light-emitting device formed by vertically stacking multiple light-emitting devices has a serious color deviation problem, and the diffraction light waveguide in the AR display is extremely sensitive to the topological position of the light, it is very easy to cause serious color separation of images and texts.

[0035] Based on this, some embodiments of the present application provide a display panel, which includes a substrate and a light-emitting component disposed on the substrate. Figure 2 As shown, the light emitting assembly 100 includes a first light emitting device 10, a second light emitting device 20 and a third light emitting device 30 sequentially arranged on a substrate along a first direction X. The first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 are sequentially arranged on the substrate along the first direction X, that is, the first direction X is the same as the thickness direction of the substrate. The light emitting colors of the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 are different from each other. For example, one of the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 emits red light, and the other two emit green light and blue light respectively, so that color display can be achieved.

[0036] The light emitting assembly 100 emits light in a direction away from the second light emitting device 20 along the third light emitting device 30. Figure 2 As shown, the light emitting direction of the light emitting component 100 is the direction of the arrow indicated by the label L.

[0037] like Figure 3 As shown, at least one of the first light-emitting device 10 and the second light-emitting device 20 includes a plurality of light-emitting units 101 arranged at intervals, and the arrangement direction of the plurality of light-emitting units 101 is perpendicular to the first direction X. For example, the arrangement direction of the plurality of light-emitting units 101 may be along the second direction Y, and the second direction Y is perpendicular to the first direction X. For another example, the plurality of light-emitting units 101 may be arranged in a plane array, and the extension direction of the plane is perpendicular to the first direction X. In this case, each light-emitting unit 101 may form a plurality of columns of light-emitting units 101 along the second direction Y, and the plurality of light-emitting units 101 in each column of light-emitting units 101 are arranged at intervals along a third direction, wherein the third direction and the second direction Y are perpendicular to the first direction X, respectively.

[0038] The light-emitting unit 101 is a Nano LED, and at least one of the first light-emitting device 10 and the second light-emitting device 20 is a light-emitting device composed of a plurality of Nano LEDs, wherein the size of the Nano LED is less than 1 micrometer.

[0039] like Figure 4 As shown, the third light emitting device 30 is a Micro LED. For example, the size of the Micro LED is greater than 1 micron and less than or equal to 100 microns.

[0040] The inventors found through research that Figure 5As shown, for light-emitting devices of the same size, and the sizes of both light-emitting devices are greater than 1 micron and less than 100 microns, when the light-emitting device includes multiple Nano LEDs, as the viewing angle increases, the light output intensity of the light-emitting device including Nano LEDs is more significantly reduced than that of Micro LEDs. This also means that the light pattern of the Nano LED light-emitting device is more concentrated than that of the Micro LED. It is worth noting that the "light pattern" in this article mainly refers to the change of light intensity with viewing angle. The convergence of light pattern mainly refers to the case where the viewing angle is large.

[0041] For the display panel provided in the embodiment of the present application, since the third light emitting device 30 is a Micro LED, and at least one of the first light emitting device 10 and the second light emitting device 20 includes a plurality of Nano LEDs, such as Figure 2 As shown, this makes the light pattern of the light emitted by at least one of the first light-emitting device 10 and the second light-emitting device 20 more concentrated, which helps to avoid the problem of serious visual color deviation caused by a large change in the combined color ratio due to the large intensity of the light emitted by at least one of the first light-emitting device 10 and the second light-emitting device 20 at an inclined viewing angle.

[0042] In some examples, the first light-emitting device 10 includes a plurality of light-emitting units 101 arranged at intervals, the arrangement direction of the plurality of light-emitting units 101 is perpendicular to the first direction X, and the light-emitting units 101 are Nano LEDs. In this case, the light emitted by the first light-emitting device 10 is more convergent, which helps to avoid the problem of serious color deviation of the visual field due to the large change in the combined color ratio caused by the large intensity of the light emitted by the first light-emitting device 10 at an oblique viewing angle.

[0043] In other examples, the second light emitting device 20 includes a plurality of light emitting units 101 arranged at intervals, the arrangement direction of the plurality of light emitting units 101 is perpendicular to the first direction X, and the light emitting units 101 are Nano LEDs. In this case, the light emitted by the second light emitting device 20 is more convergent, which helps to avoid the problem of serious visual color deviation caused by a large change in the combined color ratio due to the large intensity of the light emitted by the second light emitting device 20 at an oblique viewing angle.

[0044] In some embodiments, the first light emitting device 10 and the second light emitting device 20 respectively include a plurality of light emitting units 101 arranged at intervals, and the arrangement direction of the plurality of light emitting units 101 is perpendicular to the first direction X. As an implementation method, Figure 6 and Figure 7As shown, the first light-emitting device 10 includes a plurality of first light-emitting units 1001 arranged at intervals, and the arrangement direction of the plurality of first light-emitting units 1001 is perpendicular to the first direction X; the second light-emitting device 20 includes a plurality of second light-emitting units 1002 arranged at intervals, and the arrangement direction of the plurality of second light-emitting units 1002 is perpendicular to the first direction X; wherein the first light-emitting unit 1001 and the second light-emitting unit 1002 are both Nano LEDs.

[0045] In some embodiments, Figure 6 and Figure 7 As shown, the arrangement density of the first light-emitting units 1001 in the first light-emitting device 10 is less than the arrangement density of the second light-emitting units 1002 in the second light-emitting device 20. That is, for the first light-emitting device 10 and the second light-emitting device 20, within the same area, the number of the first light-emitting units 1001 is greater than the number of the second light-emitting units 1002.

[0046] In this case, as the viewing angle increases, the light output intensity of the first light-emitting device 10 will be significantly reduced compared to the light output intensity of the second light-emitting device 20. Therefore, the light pattern of the first light-emitting device 10 is more convergent than that of the second light-emitting device 20. This can make the light patterns of the first light-emitting device 10, the second light-emitting device 20 and the third light-emitting device 30 more matched, thereby significantly alleviating the problem of severe color deviation of the viewing angle.

[0047] In some examples, the size of the first light emitting unit 1001 is the same as the size of the second light emitting unit 1002. In this case, the spacing between two adjacent first light emitting units 1001 in the first light emitting device 10 is greater than the spacing between two adjacent second light emitting units 1002 in the second light emitting device 20.

[0048] In some embodiments, the size of the Micro LED can be greater than 1 micron and less than or equal to 10 microns, which can make the size of the Micro LED smaller to better meet the miniaturization requirements of VR or AR devices.

[0049] In some examples, the size of the Nano LED can be greater than 0 and less than or equal to 0.5 microns.

[0050] For example, the size of a Micro LED may be 5 microns, and the size of a Nano LED may be 0.2 microns.

[0051] In some embodiments, the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 may have the same size. That is, although the first light emitting device 10 and / or the second light emitting device 20 include a plurality of Nano LEDs, their overall size may be the same as that of the third light emitting device 30.

[0052] Such an arrangement can adapt the size requirement of the light emitting assembly 100 while also enabling the light pattern of the first light emitting device 10 (and / or the second light emitting device 20 ) to adapt to the third light emitting device 30 .

[0053] The size of the Micro LED may refer to the size of the Micro LED along the second direction Y, and the size of the Nano LED refers to the size of the Nano LED along the second direction Y. In this case, the maximum size between the multiple Nano LEDs in the second direction is the size of the light-emitting device including the Nano LED.

[0054] For example, the size of the third light emitting device 30 is 5 micrometers; when the first light emitting device 10 includes a plurality of Nano LEDs, the maximum size between the Nano LEDs at both ends of the first light emitting device 10 in the second direction is also 5 micrometers.

[0055] In some embodiments, Figure 3 As shown, each light-emitting unit 101 (i.e., Nano LED) includes a first electrode 1011, a first semiconductor layer 1012, a light-emitting layer 1013, a second semiconductor layer 1014, and a second electrode 1015, which are sequentially stacked in a direction away from the substrate. The first electrodes 1011 in a plurality of light-emitting units 101 are connected to each other, and the second electrodes 1015 in a plurality of light-emitting units 101 are connected to each other. As an example, the plurality of first electrodes 1011 may be arranged in a whole layer, and the plurality of second electrodes 1015 may also be arranged in a whole layer.

[0056] In this case, all the light-emitting units 101 can be driven to emit light by driving the electrode layers corresponding to the first electrode 1011 and the second electrode 1015 respectively, thereby achieving driving of the light-emitting device including the light-emitting unit 101 .

[0057] In some examples, the first electrode 1011 in the first light-emitting device 10 (the first electrode 1011 is an electrode on the side of the first light-emitting device 10 close to the substrate) can be a metal electrode, and the second electrode 1015 in the first light-emitting device 10 and the first electrode 1011 and the second electrode 1015 in the second light-emitting device 20 are transparent electrodes. Among them, since the first electrode 1011 in the first light-emitting device 10 is a metal electrode, it can reflect the light from the first light-emitting device 10, the second light-emitting device 20 and the third light-emitting device 30, so that the light-emitting component 100 emits light along the direction of the first light-emitting device 10 toward the third light-emitting device 30. By setting the second electrode 1015 in the first light-emitting device 10 and the first electrode 1011 and the second electrode 1015 in the second light-emitting device 20 as transparent electrodes, the light utilization rate of the display panel can be improved.

[0058] As an example, the metal electrode can be made of materials such as silver and magnesium; the transparent electrode can be made of materials such as indium tin oxide and indium zinc oxide. The present application does not limit the specific selection of the materials.

[0059] In some examples, the material of the first semiconductor layer 1012 may be N-type GaN (gallium nitride); the light emitting layer 1013 may be an InGaN / GaN (indium gallium nitride / gallium nitride) multiple quantum well layer (MQWs), for example, a 6-period InGaN / GaN multiple quantum well layer; and the material of the second semiconductor layer 1014 may be P-type GaN.

[0060] For example, the first semiconductor layer 1012 may be 300 nanometers, the light emitting layer 1013 may be 150 nanometers, and the second semiconductor layer 1014 may be 150 nanometers.

[0061] In some examples, the light emitting unit 101 further includes a cap layer 1016 located on the second semiconductor layer 1014. The cap layer 1016 can provide a certain degree of protection for the light emitting unit 101. In addition, the cap layer 1016 can modulate the light to achieve a better light emitting effect. As an implementation method, the material of the cap layer 1016 can be consistent with that of the second semiconductor layer 1014, for example, both use P-type GaN.

[0062] In some embodiments, Figure 3 As shown, a passivation layer 1017 is further provided between the first electrode 1011 and the second electrode 1015. The passivation layer 1017 is provided around the first semiconductor layer 1012, the light-emitting layer 1013, and the second semiconductor layer 1014 to effectively protect the light-emitting unit 101, thereby improving the stability of the light-emitting unit 101 and further improving the reliability of the corresponding display device.

[0063] In some examples, the material of the passivation layer 1017 may be silicon oxide.

[0064] In some embodiments, Figure 4 As shown, the third light emitting device 30 includes a third electrode 301 , a third semiconductor layer 302 , a light emitting functional layer 303 , a fourth semiconductor layer 304 and a fourth electrode 305 which are sequentially stacked.

[0065] The materials of the third semiconductor layer 302 , the light-emitting functional layer 303 and the fourth semiconductor layer 304 can be respectively set with reference to the first semiconductor layer 1012 , the light-emitting layer 1013 and the second semiconductor layer 1014 , and the only difference is the size.

[0066] In some examples, the third electrode 301 and the fourth electrode 305 are both transparent electrodes, which can further improve the light utilization rate of the display panel.

[0067] It is worth noting that the light-emitting functional layer 303 in the third light-emitting device 30 is continuous, while for the first light-emitting device 10 or the second light-emitting device 20 including the light-emitting unit 101 , the light-emitting layer 1013 thereof is disconnected.

[0068] In some embodiments, Figure 2 As shown, the center lines of the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 coincide with each other. For example, the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 all use the same center line P as their respective center lines.

[0069] In this case, the position of the center line P represents the light emitting center line of the light emitting element 100. Along the light emitting center line, the light intensity emitted by the light emitting element 100 is higher.

[0070] Since the center lines of the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 coincide with each other, the light patterns of the first light emitting device 10, the second light emitting device 20 and the third light emitting device 30 can adapt to each other, thereby making the light uniformity of the display panel excellent.

[0071] It is worth noting that the cross section of the above-mentioned light-emitting device (such as the first light-emitting device 10, the second light-emitting device 20 or the third light-emitting device 30) perpendicular to its thickness direction may be circular or polygonal, etc. The geometric center of the cross section is located on the center line of the corresponding light-emitting device, and the center line extends along the thickness direction of the light-emitting device.

[0072] For example, when the cross section of the light emitting device perpendicular to its thickness direction is circular, the center of the circle is located on the center line of the light emitting device. For another example, when the cross section of the light emitting device perpendicular to its thickness direction is square, the center point of the square is located on the center line of the light emitting device.

[0073] In some embodiments, the third light emitting device 30 is a blue light emitting device, that is, the third light emitting device 30 emits blue light. One of the first light emitting device 10 and the second light emitting device 20 is a red light emitting device, and the other is a green light emitting device. The red light emitting device emits red light, and the green light emitting device emits green light.

[0074] For example, the first light emitting device 10 is a red light emitting device, and the second light emitting device 20 is a green light emitting device. For another example, the first light emitting device 10 is a green light emitting device, and the second light emitting device 20 is a red light emitting device.

[0075] Since blue light has relatively high energy, it will be excited to become red light when passing through the red light-emitting device, which will make it difficult for the light-emitting component to emit blue light. Therefore, the present application arranges the red light-emitting device below the blue light-emitting device, thereby ensuring that the light-emitting component 100 can smoothly emit blue light, which is conducive to achieving full-color display of the display panel.

[0076] The inventors also studied the display panels in the related art (including Figure 1 The light emitting component shown in FIG. 1 and the display panel provided in the above embodiment of the present application (including the light emitting component shown in FIG. 1 ) Figure 2 The light emitting component 100 shown in FIG. Figure 8 and Fig. 9 The simulation diagram is shown, and the color deviation values ​​(JNCD values) of the two are calculated according to the color coordinates CIExy, as shown in Table 1.

[0077]

[0078] Table 1

[0079] Among them, the JNCD value can be calculated according to the following formula:

[0080]

[0081] 1JNCD=Δ(u′v′)=0.004

[0082] For the display panel provided in the embodiment of the present application, Figure 8 and Fig. 9 From the perspective of the display panel in the related art, the white spot area of ​​the light-emitting component 100 in the middle position is relatively larger, and the color depth around the white spot is smaller. At the same time, combined with Table 1, Data 1 in Table 1 represents the data obtained by simulating the display panel in the related art, and Data 2 represents the data obtained by simulating the display panel provided by the embodiment of the present application. It can be seen that when the light-emitting component 100 in the display panel is deviated from the vertical optical axis by 20 degrees, the color difference is significantly reduced from 16.8JNCD in the related art to 0.5JNCD. Therefore, the angular dispersion problem of the display panel provided by the embodiment of the present application has been effectively improved.

[0083] like Fig.10 As shown, the display panel 200 includes a substrate 201 and a light emitting component 100 located on the substrate 201 .

[0084] In some examples, there are multiple light-emitting components 100 , and the multiple light-emitting components 100 can be distributed in an array on the substrate 201 .

[0085] In some examples, the display panel 200 can be used for lighting; in other examples, the display panel 200 can be used for image display.

[0086] In some embodiments, the display panel 200 further includes a lens 40, which is located on a side of the third light emitting device 30 away from the substrate 201. By providing the lens 40, the light emitted by the light emitting assembly 100 can be adjusted, so that the display panel 200 achieves a good light emitting effect.

[0087] In some examples, the number of lenses 40 may be consistent with the number of light emitting components 100. That is, a corresponding lens 40 is disposed on a side of each light emitting component 100 away from the substrate 201.

[0088] As an example, the main optical axis of the lens 40 coincides with the center line P of the corresponding light-emitting component 100 (the center lines of all light-emitting devices in the light-emitting component 100 coincide with each other), which is helpful in improving the adjustment effect of the lens 40 on the output light of the light-emitting component 100, thereby improving the light output effect of the display panel 200.

[0089] Some embodiments of the present application also provide a display device, such as Fig.11 As shown, the display device 300 includes a display panel 200 .

[0090] Since the display device 300 includes the display panel 200 , it has the technical effects of the display panel 200 , which will not be described in detail here.

[0091] In some examples, the display device 300 further includes a fixing member for fixing the display panel 200 .

[0092] For example, the display device 300 may be a VR display device or an AR display device.

[0093] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display panel, characterized in that: include: A substrate and a first light emitting device, a second light emitting device and a third light emitting device sequentially arranged on the substrate along a first direction, wherein the first light emitting device, the second light emitting device and the third light emitting device emit different colors; wherein: At least one of the first light-emitting device and the second light-emitting device includes a plurality of light-emitting units arranged at intervals, an arrangement direction of the plurality of light-emitting units is perpendicular to the first direction, the light-emitting units are Nano LEDs, and the third light-emitting device is Micro LEDs.

2. The display panel according to claim 1, characterized in that: The first light-emitting device includes a plurality of first light-emitting units arranged at intervals, and an arrangement direction of the plurality of first light-emitting units is perpendicular to the first direction; the second light-emitting device includes a plurality of second light-emitting units arranged at intervals, and an arrangement direction of the plurality of second light-emitting units is perpendicular to the first direction, and the first light-emitting unit and the second light-emitting unit are Nano LEDs.

3. The display panel according to claim 2, characterized in that: An arrangement density of the plurality of first light-emitting units in the first light-emitting device is smaller than an arrangement density of the plurality of second light-emitting units in the second light-emitting device.

4. The display panel according to claim 1, characterized in that: Each of the light-emitting units includes a first electrode, a first semiconductor layer, a light-emitting layer, a second semiconductor layer and a second electrode stacked in sequence, the first electrodes of the plurality of light-emitting units are interconnected, and the second electrodes of the plurality of light-emitting units are interconnected.

5. The display panel according to claim 4, characterized in that: A passivation layer is further disposed between the first electrode and the second electrode, and the passivation layer is disposed around the first semiconductor layer, the light emitting layer and the second semiconductor layer.

6. The display panel according to any one of claims 1 to 5, characterized in that: The third light emitting device is a blue light emitting device, and one of the first light emitting device and the second light emitting device is a red light emitting device, and the other is a green light emitting device.

7. The display panel according to any one of claims 1 to 5, characterized in that: Center lines of the first light emitting device, the second light emitting device, and the third light emitting device coincide with each other.

8. The display panel according to any one of claims 1 to 5, characterized in that: Each of the light-emitting units comprises a first electrode, a first semiconductor layer, a light-emitting layer, a second semiconductor layer and a second electrode which are sequentially stacked in a direction away from the substrate; The third light emitting device comprises a third electrode, a third semiconductor layer, a light emitting functional layer, a fourth semiconductor layer and a fourth electrode which are stacked in sequence; The first electrode in the first light-emitting device is a reflective electrode, the second electrode in the first light-emitting device, the first electrode and the second electrode in the second light-emitting device, and the third electrode and the fourth electrode in the third light-emitting device are all transparent electrodes.

9. The display panel according to any one of claims 1 to 5, characterized in that: The display panel further includes a lens, and the lens is disposed on a side of the third light emitting device away from the substrate.

10. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 9.

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