Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a substrate, a light emitting diode, a nano array and a first lens. The light emitting diode is located on the substrate, the nano array is located on the light emitting side of the light emitting diode, and the first lens is located on the nano array. Wherein the first lens and the nano array are used for converging light rays emitted by the light emitting diode. The light emitted by the light emitting diode is subjected to primary convergence by using the nano array, and then the light is subjected to secondary convergence by using the first lens, so that the light convergence capability can be improved, and the light extraction efficiency is improved.

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] Modern society has entered an information-based and intelligent era, and display is a key component in achieving information exchange and intelligence. Among the many display technologies currently available, micro-light-emitting diode (Micro LED) display technology has garnered widespread attention. Micro LED display technology is a self-luminous display technology that integrates arrayed micron-sized LED units on an actively addressed drive panel, enabling individual control and illumination to output displayed images.

[0003] With the emergence of Micro LED display technology, miniaturization and high resolution of display devices such as augmented reality (AR) display devices, virtual reality (VR) display devices, near-eye display (NED) and head-up display (HUD) devices have become possible.

[0004] However, the light emitted by LEDs is relatively scattered, resulting in low light extraction efficiency. Summary of the Invention

[0005] The purpose of this application is to provide a display panel and a display device, aiming to improve light extraction efficiency.

[0006] An embodiment of the present application provides a display panel, comprising: a substrate; a light-emitting diode located on the substrate; a nanoarray located on the light-emitting side of the light-emitting diode; and a first lens located on the nanoarray; wherein the first lens and the nanoarray are used to converge the light emitted by the light-emitting diode.

[0007] In some embodiments, the nanoarray includes convex units arranged in an array, and the spacing between adjacent convex units is smaller than the emission wavelength of the light-emitting diode.

[0008] In some embodiments, the nanoarray includes a central region and an edge region, wherein the edge region is arranged around the central region; and a spacing between adjacent protrusion units in the central region is smaller than a spacing between adjacent protrusion units in the edge region.

[0009] In some embodiments, one side of the first lens is embedded in the protrusion unit; a material of the protrusion unit is different from a material of the first lens, and a refractive index of the first lens is greater than a refractive index of the protrusion unit.

[0010] In some embodiments, the device further includes: a second lens located between the light-emitting diode and the nanoarray, and the protrusion units are distributed in an array on the second lens; wherein the material of the second lens is the same as that of the protrusion units, and the thickness of the second lens is less than or equal to the thickness of the first lens.

[0011] In some embodiments, the light-emitting diode includes: a first electrode layer located on the substrate; a light-emitting device layer located on the first electrode layer; a second electrode layer located on the upper surface of the light-emitting device layer and extending to the side of the light-emitting device layer; an isolation layer located on the side of the light-emitting device layer and isolating the light-emitting device layer from the second electrode layer, and isolating the first electrode layer from the second electrode layer.

[0012] In some embodiments, the light-emitting diodes include a red light-emitting diode, a blue light-emitting diode, and a green light-emitting diode that are spaced apart from each other, and the first lens and the nano-array are all disposed on the red light-emitting diode, the blue light-emitting diode, and the green light-emitting diode.

[0013] An embodiment of the present application further provides a display device, comprising: the display panel of any of the above embodiments; a collimating lens located on the light-emitting side of the display panel; and an optical waveguide structure located on a side of the collimating lens away from the display panel.

[0014] The present application provides a display panel that uses a nano-array to converge light emitted by a light-emitting diode once, and then uses a first lens to converge the light a second time, thereby improving the light convergence capability and the light extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0016] Figure 1 is a schematic cross-sectional structural diagram of a display panel provided by an embodiment of the present application;

[0017] Figure 2 is a schematic cross-sectional structural diagram of a display panel provided in some embodiments of the present application;

[0018] Figure 3 yes Figure 2 Schematic diagram of the top-down structure of the nanoarray;

[0019] Figure 4 yes Figure 2 Simulation curve diagram of light intensity and viewing angle of the display panel;

[0020] Figure 5is a schematic cross-sectional structural diagram of a display panel provided by an embodiment of the present application;

[0021] Figure 6 yes Figure 5 Simulation curve diagram of light intensity and viewing angle of the display panel;

[0022] Figure 7 is a schematic structural diagram of a display device provided in some embodiments of the present application;

[0023] Figures 8 to 15 This is a schematic diagram of the cross-sectional structure of a display panel during the manufacturing process provided by some embodiments of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0025] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0026] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0028] See also Figure 1 , Figure 1 It is a schematic cross-sectional structure diagram of a display panel provided in one embodiment of the present application.

[0029] The display panel includes a light emitting diode 1 and a prism structure 2 located above the light emitting diode 1. The prism structure 2 can converge the light emitted by the light emitting diode 1.

[0030] Due to process limitations, it's difficult for the prism structure 2 to achieve the ideal shape for optimal efficiency. It's understood that the more the light pattern distribution of the light emitted from the prism structure 2 is concentrated in the vertical direction, the higher the light extraction efficiency. This is because when the LED 1 is combined with a collimating lens, the collimating lens can only accept light within ±10 degrees, and the higher the parallelism, the higher the optical efficiency.

[0031] The higher the parallelism, the larger the height / dimension (H / CD) value of the prism structure 2 must be, generally requiring H / CD to be greater than 1.5. When the pixel size is fixed at 4μm, the height of the prism structure 2 must be greater than 6μm, but excessively high coating thickness can easily lead to process problems such as peeling.

[0032] Based on this, an embodiment of the present application provides a display panel, comprising a substrate; a light-emitting diode located on the substrate; a nanoarray located on the light-emitting side of the light-emitting diode; and a first lens located on the nanoarray; wherein the first lens and the nanoarray are used to converge the light emitted by the light-emitting diode.

[0033] In the display panel provided by the embodiment of the present application, the nano-array is used to converge the light emitted by the light emitting diode once, and the first lens is used to converge the light a second time, thereby improving the light convergence capability and the light extraction efficiency. Figure 1 In this embodiment, the light extraction efficiency can be effectively improved without increasing the height of the first lens, thereby reducing the technical difficulty of the process and the yield loss (such as film shedding, etc.) caused by the excessive height of the lens.

[0034] The structure of the display panel provided in the embodiments of the present application is described below with reference to the accompanying drawings.

[0035] See also Figure 2 , Figure 2 It is a schematic diagram of the cross-sectional structure of a display panel provided in some embodiments of the present application.

[0036] It should be noted that the display panel 100 may include a plurality of light emitting diodes distributed in an array, and the plurality of light emitting diodes may emit red light, green light and blue light, thereby realizing the display function of the display panel 100. Figure 2 Only one of the light-emitting diodes and the associated structure is shown.

[0037] The display panel 100 includes a substrate 10, a light-emitting diode 20, a nanometer array 30, and a first lens 40. The light-emitting diode 20 is located on the substrate 10, the nanometer array 30 is located on the light-emitting side of the light-emitting diode 20, and the first lens 40 is located on the nanometer array 30. The first lens 40 and the nanometer array 30 are used to converge the light emitted by the light-emitting diode 20.

[0038] In some embodiments, the orthographic projection of the first lens 40 on the substrate 10 coincides with the orthographic projection of the nanoarray 30 on the substrate 10. In other words, the edge of the nanoarray 30 coincides with the edge of the bottom surface (i.e., the lower surface) of the first lens 40.

[0039] Please combine Figure 3 , Figure 3 yes Figure 2 Schematic diagram of the top-down structure of the nanoarray.

[0040] The nanometer array 30 includes convex units 31 arranged in an array, and the distance between adjacent convex units 31 is smaller than the emission wavelength of the light emitting diode 20 .

[0041] The nanoarray 30, formed by the array of raised units 31, can also be called a metasurface. These raised units 31 can precisely control the phase of incident light. The geometric shape, size, and material properties of each raised unit 31 determine its ability to modulate the phase of light. The spacing between the raised units 31 is less than the wavelength of the light-emitting diode 20, ensuring effective manipulation of the light phase and achieving the desired optical function, reducing unnecessary diffraction effects and improving optical efficiency.

[0042] It can be understood that the distance between any adjacent protrusion units 31 is smaller than the light emission wavelength of the light emitting diode 20 thereunder.

[0043] In some embodiments, at least one of the shapes, sizes and spacings of the plurality of raised units is different, that is, by designing the shapes, sizes and spacings of the raised units, the phase gain or weakening of the light waves is achieved to form this overall phase difference, thereby producing the optical property of converging light.

[0044] In some embodiments, as Figure 3 As shown, the shapes and sizes of the plurality of protrusion units 31 are the same.

[0045] The top view shape of the protrusion unit 31 can be rectangular or circular (e.g. Figure 3 As shown), the cross-section of the protrusion unit 31 may be in the shape of a rectangle (as shown Figure 2 It should be noted that the present application does not limit the specific shape and size of the protrusion unit 31.

[0046] The nanoarray 30 includes a central region 30a and an edge region 30b, with the edge region 30b surrounding the central region 30a. The spacing between adjacent protrusions 31 in the central region 30a is smaller than the spacing between adjacent protrusions 31 in the edge region 30b. By varying the spacing between the protrusions 31, the phase of the light wave can be enhanced or weakened, creating an overall phase difference and thus producing the optical property of converging light.

[0047] Among them, by designing the spacing of the protrusion units 31 to be small in the central area 30a and large in the edge area 30b, that is, the density of the protrusion units 31 in the central area 30a is high and the density of the protrusion units 31 in the edge area 30b is low, a specific phase gradient can be generated in space so that the light is focused to the center point.

[0048] It should be noted that the spacing between the protruding units 31 in the edge area 30b may be equal or unequal, and the spacing between the protruding units 31 in the central area 30a may be equal or unequal.

[0049] In some embodiments, the central area 30a has a central point, and the edge area 30b has an outer edge. From the outer edge to the central point, the spacing between the protrusion units 31 gradually decreases, that is, the density gradually increases.

[0050] In some embodiments, one side of the first lens 40 is embedded in the protrusion unit 31 .

[0051] like Figure 2 As shown, the first lens 40 has a protruding structure 41 on one side facing the protruding unit 31 , and the protruding structure 41 of the first lens 40 is embedded with the protruding unit 31 of the nanometer array 30 .

[0052] In some embodiments, the material of the protrusion unit 31 is different from that of the first lens 40, and the refractive index of the first lens 40 is greater than the refractive index of the protrusion unit 31. In this way, when light contacts the interface between the protrusion unit 31 and the first lens 40, differential diffraction can occur, thereby improving the light focusing ability.

[0053] The display panel 100 may further include a second lens 50 . The second lens 50 is located between the light emitting diode 20 and the nanometer array 30 , and the protrusion units 31 are distributed in an array on the second lens 50 .

[0054] In some embodiments, the material of the second lens 50 is the same as that of the protrusion unit 31 . In this way, the protrusion unit 31 can be formed by using the material of the second lens 50 , thereby simplifying the process.

[0055] The material of the second lens 50 and the protrusion unit 31 is different from the material of the first lens 40. Therefore, in the process of manufacturing the first lens 40 by using an etching process, damage to the second lens 50 and the protrusion unit 31 can be reduced.

[0056] For example, the second lens 50 and the first lens 40 are made of silicon oxide, silicon nitride, or titanium oxide. In some embodiments, the second lens 50 and the protrusion unit 31 are made of silicon oxide or titanium oxide, and the first lens 40 is made of silicon nitride.

[0057] In some embodiments, the edge of the upper surface of the second lens 50 coincides with the edge of the nanoarray 30 , so the edge of the lower surface of the first lens 40 , the edge of the nanoarray 30 , and the edge of the upper surface of the second lens 50 all coincide.

[0058] In some embodiments, the thickness of the second lens 50 is less than or equal to the thickness of the first lens 40. A thinner second lens 50 allows more light to pass through the nanoarray 30 and converge, thereby increasing the range of light convergence and effectively shaping the light at the edge of the LED 20. For example, the nanoarray 30 can be fabricated directly on the LED 20, or the second lens 50 can be very thin, both of which can expand the range of light convergence.

[0059] In some embodiments, the thickness of the first lens 40 is 2 micrometers to 3 micrometers, and the thickness of the second lens 50 is 0 micrometers to 2 micrometers.

[0060] In some embodiments, the side surface of the second lens 50 may be an outwardly protruding arc surface, that is, forming a part of a convex lens, so as to converge the light passing through the side surface to a certain extent.

[0061] In other embodiments, the side surface of the second lens 50 may also be perpendicular to the substrate 10 .

[0062] Please continue reading Figure 2 The light-emitting diode 20 may include a first electrode layer 21, a light-emitting device layer 22, a second electrode layer 23, and an isolation layer 24. The first electrode layer 21 is located on the substrate 10, and the light-emitting device layer 22 is located on the first electrode layer 21. The second electrode layer 23 is located on the upper surface of the light-emitting device layer 22 and extends to the side of the light-emitting device layer 22. The isolation layer 24 is located on the side of the light-emitting device layer 22 and isolates the light-emitting device layer 22 from the second electrode layer 23, and isolates the first electrode layer 21 from the second electrode layer 23.

[0063] The light emitting device layer 22 may include a light emitting layer, and P-type semiconductor and N-type semiconductor layers (not shown) located on both sides of the light emitting layer. The material of the isolation layer 24 may be the same as that of the second lens 50, which can simplify the process.

[0064] The display panel 100 may further include an encapsulation layer 60 . The encapsulation layer 60 is located on the substrate 10 and covers the surface of the light emitting diode 20 . The encapsulation layer 60 is located between the light emitting diode 20 and the second lens 50 .

[0065] In some embodiments, the material of the encapsulation layer 60 can be the same as that of the second lens 50. Therefore, during the encapsulation process, the pattern material required for the second lens 50 can be formed in a single process, simplifying the process. Furthermore, using the same material for the encapsulation layer 60, the second lens 50, and the protrusion unit 31 can reduce film separation and improve the stability of the film bonding.

[0066] In some embodiments, the orthographic projection of the second lens 50 on the substrate 10 is within the range of the orthographic projection of the encapsulation layer 60 on the substrate 10. It is understood that the encapsulation layer 60 can be continuous between the plurality of light-emitting diodes 20, and the plurality of light-emitting diodes 20 can be spaced apart on the substrate 10, so the top-view area of the second lens 50 can be smaller than the area of the encapsulation layer 60.

[0067] In some embodiments, the light-emitting diode 20 includes a red light-emitting diode, a blue light-emitting diode, and a green light-emitting diode that are spaced apart from each other, and the first lens 40 and the nano-array 30 are all disposed on the red light-emitting diode, the blue light-emitting diode, and the green light-emitting diode.

[0068] Since each light emitting diode 20 is provided with the nano-array 30 and the first lens 40 , the light from each light emitting diode 20 is effectively focused, thereby reducing the crosstalk of light colors between adjacent light emitting diodes 20 .

[0069] See 4, Figure 4 yes Figure 2 Simulation curve of light intensity and viewing angle of the display panel.

[0070] Depend on Figure 4 It can be seen that the light intensity is concentrated at a position with a viewing angle of 90°, which indicates that the outgoing light of the display panel 100 provided in the embodiment of the present application is concentrated in the vertical direction.

[0071] See also Figure 5 and Figure 6 , Figure 5 is a schematic cross-sectional view of a display panel provided in one embodiment of the present application. Figure 6 yes Figure 5 Simulation curve of light intensity and viewing angle of the display panel.

[0072] The display panel 100A includes a light emitting diode 1 a and a prism structure 2 a located on the light emitting diode 1 a . The prism structure 2 a is used to converge light emitted by the light emitting diode 1 a .

[0073] It should be noted that the display panel 100A and Figure 1 The difference between the display panel and the prism structure 2a is that the height of the prism structure 2a is less than Figure 1 The height of the middle prism structure 2 makes the emitted light more divergent, so the light extraction efficiency of the display panel 100A is lower.

[0074] The display panel 100A and Figure 2 The same thing as the display panel 100 is that the height of the prism structure 2a is the same as the total height of the first lens 40 and the second lens 50, but Figure 2 The light emitted from the middle display panel 100 is more concentrated. Figure 6 and Figure 4 , you can also know, Figure 2 The light distribution of the middle display panel 100 is more concentrated in the vertical direction, and the efficiency is higher.

[0075] Therefore, compared to Figure 5 Example, Figure 2 The display panel 100 can greatly improve the light extraction efficiency without increasing the height of the lens.

[0076] Please refer to Table 1, which shows the simulation data of the optical performance of display panels with different structures.

[0077] Table 1

[0078]

[0079] It should be noted that the simulation data of these optical properties are qualitative analysis, so they do not have units.

[0080] As shown in Table 1, the luminous flux of display panel 100 increases, the central brightness improves, and the luminous angle decreases. The ratio of the ±10° luminous flux of display panel 100 (0.102) to the ±10° luminous flux of display panel 100A (0.031) is 3.3. In other words, the light extraction efficiency of display panel 100 is 3.3 times that of display panel 100A.

[0081] In addition, through Figure 1 The display panel is simulated and it is found Figure 2 The display panel 100 can basically achieve the same performance as the Figure 1 The same optical effect as in the embodiment.

[0082] Among them, light extraction efficiency refers to the efficiency of effectively extracting light emitted from a light source (such as an LED) within a specific angular range (i.e., a conical area extending 10° outward from the central axis or a viewing angle of 80° to 100°).

[0083] See also Figure 7 , Figure 7 This is a schematic structural diagram of a display device provided in some embodiments of the present application.

[0084] The display device 200 may be a virtual reality (VR) display device, an augmented reality (AR) display device, a mixed reality (MR) display device, a near-eye display (NED) or a head-up display (HUD) device, etc.

[0085] The display device 200 includes a display panel 201, a collimating lens 202 and an optical waveguide structure 203. The display panel 201 may be Figure 2 In the display panel of the embodiment, the collimating lens 202 is located on the light-emitting side of the display panel 201 , and the optical waveguide structure 203 is located on the side of the collimating lens 202 away from the display panel 201 .

[0086] Among them, the display panel 201 provides a display source for the display device 200, the collimating lens 202 is located behind the display source, and is responsible for converting the relatively divergent light beams into parallel light beams. The optical waveguide structure 203 is located behind the collimating lens 202, receives the collimated parallel light beams, and transmits the image from the display source to the user's field of view through mechanisms such as internal reflection or diffraction.

[0087] Since the collimating lens 202 can only accept light within ±10 degrees, and the higher the parallelism, the higher the optomechanical efficiency, the display panel 201 provided in this embodiment of the application increases the freedom of beam shaping, effectively shaping the edge light of the LED, and ultimately increasing the light extraction efficiency by 2.3 times, thereby improving the optomechanical efficiency.

[0088] Optical efficiency refers to the ratio of input light energy to output light energy in an optical system. It measures the energy loss in an optical system when transmitting, converting, or processing light.

[0089] See also Figures 8 to 15 , Figures 8 to 15 The cross-sectional structure diagram of the display panel provided in some embodiments of the present application during the manufacturing process, the manufacturing method of the display panel includes the following steps for manufacturing Figure 2 The display panel 100 is shown.

[0090] See also Figure 8 , providing a substrate, forming a light-emitting diode 20 on the substrate; and forming an encapsulation layer 60 covering the surface of the light-emitting diode 20 on the substrate.

[0091] The method for forming the light-emitting diode 20 may include: forming a first electrode layer 21 on the substrate; forming a light-emitting device layer 22 on the first electrode layer 21; forming an isolation layer 24 on the side of the light-emitting device layer 22; and forming a second electrode layer 23 on the upper surface of the light-emitting device layer 22 and the surface of the isolation layer 24.

[0092] In some embodiments, the material of the isolation layer 24 is the same as that of the encapsulation layer 60 , which can simplify the process.

[0093] See also Figures 9 to 15 , forming a second lens 50 on the encapsulation layer 60 , and forming a nano-array 30 on the second lens 50 .

[0094] See also Figures 9 to 12 The method of forming the nanoarray 30 may include: Figure 9 As shown, a lens material layer 50a is formed on the packaging layer 60; Figure 10As shown, a photoresist layer 70 is formed on the lens material layer 50a; Figure 11 As shown, the first photoresist layer 70 is subjected to a photolithography process to form a first patterned photoresist layer 71; Figure 12 As shown, the surface of the lens material layer 50 a is etched using the first patterned photoresist layer 71 as a mask to form the nano-array 30 .

[0095] In some embodiments, the nano-array 30 may be formed by using a nano-imprinting process instead of the above-mentioned photolithography and etching processes.

[0096] In some embodiments, the material of the encapsulation layer 60 is the same as that of the lens material layer 50a, so the encapsulation layer 60 can be formed in the process of forming the lens material layer 50a. That is, Figure 8 The encapsulation layer 60 in Figure 9 The lens material layer 50a is deposited in one deposition process, thereby simplifying the process.

[0097] See also Figures 13 to 15 as well as Figure 2 The material forming the second lens 50 may include: Figure 13 As shown, a second patterned photoresist layer 80 is formed to cover the nano-array 30; Figure 14 As shown, the second patterned photoresist layer 80 is used as a mask to etch the lens material layer 50a to form the second lens 50; Figure 15 As shown, the second patterned photoresist layer 80 is removed; as shown Figure 2 As shown, a first lens 40 is formed on the nano-array 30 .

[0098] The method of forming the first lens 40 may include: depositing a first lens material layer on the encapsulation layer 60 , the second lens 50 and the nano-array 30 ; and etching the first lens material layer to form the first lens 40 .

[0099] The description of the above embodiments is only used to help understand the technical solutions and core ideas of this application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized in that: include: substrate; a light emitting diode, located on the substrate; a nanometer array, located on the light-emitting side of the light-emitting diode; a first lens, located on the nanoarray; The first lens and the nanoarray are used to converge the light emitted by the light emitting diode.

2. The display panel according to claim 1, wherein: The nanometer array includes convex units arranged in an array, and the interval between adjacent convex units is smaller than the light emission wavelength of the light emitting diode.

3. The display panel according to claim 2, wherein: The nanoarray includes a central region and an edge region, wherein the edge region is arranged around the central region; The distance between adjacent protrusion units in the central area is smaller than the distance between adjacent protrusion units in the edge area.

4. The display panel according to claim 2, wherein: One side of the first lens is embedded in the convex unit; A material of the convex unit is different from a material of the first lens, and a refractive index of the first lens is greater than a refractive index of the convex unit.

5. The display panel according to claim 2, wherein: Also includes: a second lens, located between the light-emitting diode and the nanometer array, and the protrusion units are distributed in an array on the second lens; The material of the second lens is the same as that of the protruding unit, and the thickness of the second lens is less than or equal to the thickness of the first lens.

6. The display panel according to claim 5, wherein: The light emitting diode comprises: a first electrode layer, located on the substrate; a light-emitting device layer, located on the first electrode layer; a second electrode layer, located on the upper surface of the light-emitting device layer and extending to the side of the light-emitting device layer; The isolation layer is located on a side of the light emitting device layer and isolates the light emitting device layer from the second electrode layer, and isolates the first electrode layer from the second electrode layer.

7. The display panel according to claim 6, wherein: The material of the isolation layer is the same as that of the second lens.

8. The display panel according to claim 5, wherein: Also includes: an encapsulation layer, located on the substrate and covering a surface of the light-emitting diode, wherein the encapsulation layer is located between the light-emitting diode and the second lens; The material of the encapsulation layer is the same as that of the second lens, and the orthographic projection of the second lens on the substrate is within the range of the orthographic projection of the encapsulation layer on the substrate.

9. The display panel according to claim 1, wherein: The light emitting diodes include a red light emitting diode, a blue light emitting diode and a green light emitting diode which are arranged at intervals. The red light emitting diode, the blue light emitting diode and the green light emitting diode are all provided with the first lens and the nanometer array.

10. A display device, characterized in that: include: The display panel according to any one of claims 1 to 9; a collimating lens, located on the light-emitting side of the display panel; The optical waveguide structure is located on a side of the collimating lens away from the display panel.

Images