Display panel, preparation method thereof and display device
By stacking reflective structures on the display panel to change the propagation direction of light, the problem of low light output efficiency in the prior art is solved, and a higher light output amount and light output efficiency are achieved, and the display effect and stability are enhanced.
Patent Information
- Application Number
- CN202411288504.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2024-12-27
AI Technical Summary
The light output efficiency of existing display panels is low, and the distance between the microlens arrays is far from meeting the current demand, resulting in insufficient light output and light output efficiency.
A reflective structure is stacked on the array substrate of the display panel, and the reflective structure at least partially surrounds the sub-pixels, thereby changing the propagation direction of light, causing it to emit, and increasing the light output amount and light output efficiency. The reflective structure includes a convex surface, a plurality of reflective units and a packaging layer, which changes the propagation direction of light through the difference in refractive index, avoids short circuits and improves stability.
The light output amount and light output efficiency of the display panel are significantly improved, the reflection amount and transmittance of the light are enhanced, and the display effect and stability are improved.
Smart Images
Figure CN119212502A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of display technology, and in particular to a display panel and a method for preparing the same, and a display device. Background Art
[0002] A microlens array can improve the light extraction efficiency of a display panel, but in related technologies, the distance of a microlens array is far from meeting the current demand for light extraction efficiency.
[0003] Therefore, how to improve the light extraction efficiency of the display panel has become an urgent problem to be solved. Summary of the invention
[0004] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a display panel and a manufacturing method thereof and a display device.
[0005] In a first aspect, an embodiment of the present application provides a display panel, which includes: an array substrate; a light-emitting device layer, stacked on one side of the array substrate, including sub-pixels; a reflective structure, stacked on the same side of the array substrate as the light-emitting device layer, the reflective structure at least partially surrounds the sub-pixels, thereby changing the propagation direction of light that was previously unable to be emitted through the reflective structure, so that it is emitted, thereby increasing the light output of the display panel and improving the light output efficiency of the display panel.
[0006] In combination with the first aspect, in some implementations of the first aspect, the reflective structure includes a convex surface, and the convex surface is protruding in a direction away from the array substrate.
[0007] In combination with the first aspect, in certain implementations of the first aspect, the reflective structure includes a first opening, and the sub-pixel is located in the first opening; preferably, the orthographic projection of the reflective structure on the array substrate includes a mesh structure, and the orthographic projection of the sub-pixel on the array substrate is located in the mesh holes of the mesh structure; or, the reflective structure includes a plurality of reflective units, and the reflective units enclose the first opening.
[0008] In combination with the first aspect, in certain implementations of the first aspect, the reflective structure includes a plurality of reflective units, the reflective units are located between adjacent sub-pixels, and the plurality of reflective units are arranged around the sub-pixels; preferably, one or more reflective units are arranged between adjacent sub-pixels; preferably, the reflective unit includes a microlens, thereby increasing the reflective area, thereby increasing the amount of reflected light, thereby further increasing the amount of light emitted by the display panel, and further improving the light emission efficiency of the display panel.
[0009] In combination with the first aspect, in certain implementations of the first aspect, the display panel also includes: a pixel definition layer, stacked between the array substrate and the reflective structure, the pixel definition layer includes a second opening, the sub-pixel is located in the second opening, and the orthographic projection of the reflective structure on the array substrate is located within the orthographic projection range of the pixel definition layer on the array substrate, thereby avoiding a short circuit between the reflective structure and the electrode layer by stacking the reflective structure on the side of the pixel definition layer facing away from the array substrate.
[0010] In combination with the first aspect, in certain implementations of the first aspect, the display panel also includes: an insulating layer, stacked on a side of the reflective structure facing away from the array substrate, the insulating layer includes a third opening, the sub-pixel is located in the third opening, and the orthographic projection of the reflective structure on the array substrate is located within the orthographic projection range of the insulating layer on the array substrate, thereby isolating the sub-pixel and the reflective structure, avoiding connection between the sub-pixel and the reflective structure, and preventing a short circuit.
[0011] In combination with the first aspect, in certain implementations of the first aspect, the display panel also includes: an encapsulation layer, which is stacked on the side of the reflective structure facing away from the array substrate, protecting the reflective structure, the light-emitting device layer, the pixel definition layer and the insulating layer from corrosion by external water and oxygen, thereby improving the stability and reliability of the display panel.
[0012] Preferably, the encapsulation layer is transparent, thereby improving light transmittance.
[0013] Preferably, the encapsulation layer includes a first encapsulation sublayer and a second encapsulation sublayer stacked together, the first encapsulation sublayer is located between the reflective structure and the second encapsulation sublayer, and the refractive index of the first encapsulation sublayer is smaller than the refractive index of the second encapsulation sublayer, so that the first part of the light enters the first encapsulation sublayer after being reflected by the reflective structure, and is refracted at the interface between the first encapsulation sublayer and the second encapsulation sublayer, thereby changing the propagation direction of the first part of the light, so that the first part of the light avoids the part of the metal routing and is emitted, thereby further increasing the light output of the display panel and further improving the light output efficiency of the display panel.
[0014] Preferably, the encapsulation layer also includes a third encapsulation sublayer, which is stacked on the side of the second encapsulation sublayer facing away from the array substrate, and the refractive index of the third encapsulation sublayer is greater than the refractive index of the second encapsulation sublayer, so that the first part of the light is refracted at the interface between the second encapsulation sublayer and the third encapsulation sublayer, thereby changing the propagation direction of the first part of the light, so that the direction in which the first part of the light is emitted from the display panel is close to the thickness direction of the display panel, thereby increasing the brightness of the display panel and improving the display effect of the display panel when the user looks directly at the display panel.
[0015] In combination with the first aspect, in some implementations of the first aspect, the material of the reflective structure includes metal.
[0016] In the second aspect, an embodiment of the present application provides a method for preparing a display panel, the method comprising: providing an array substrate; preparing a reflective structure on one side of the array substrate, the reflective structure comprising a first opening; preparing a light-emitting device layer on the same side of the array substrate, the light-emitting device layer comprising sub-pixels; wherein the sub-pixels are located in the first opening, so that by preparing the reflective structure, the propagation direction of light that could not be emitted before is changed so that it can be emitted, thereby increasing the light output of the display panel and improving the light output efficiency of the display panel.
[0017] In a third aspect, an embodiment of the present application provides a display device, comprising a display panel as mentioned in any of the above embodiments.
[0018] The display panel provided in the embodiment of the present application includes an array substrate, a light-emitting device layer and a reflective structure, wherein the light-emitting device layer is stacked on one side of the array substrate, including sub-pixels; the reflective structure and the light-emitting device layer are stacked on the same side of the array substrate, and the reflective structure at least partially surrounds the sub-pixels, thereby changing the propagation direction of light that could not be emitted before through the reflective structure to emit it, thereby increasing the light output of the display panel and improving the light output efficiency of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.
[0020] Figure 1a Shown is a schematic diagram of a top view of the structure of a display panel provided in an embodiment of the present application.
[0021] Figure 1b for Figure 1a The cross-sectional structure diagram of the display panel along line N1N2 is shown.
[0022] Figure 2a Shown is a schematic diagram of a top view of the structure of a display panel provided in another embodiment of the present application.
[0023] Figure 2b for Figure 2a The cross-sectional structure diagram of the display panel along the N3N4 line is shown.
[0024] Figure 3 A schematic diagram of the top structure of a display panel provided in yet another embodiment of the present application.
[0025] Figure 4Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application.
[0026] Figure 5 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application.
[0027] Figure 6 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application.
[0028] Figure 7 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application.
[0029] Figure 8 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application.
[0030] Fig. 9 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application.
[0031] Fig.10 FIG. 1 is a schematic diagram of a process for preparing a display panel provided in an embodiment of the present application.
[0032] Fig.11 Shown is a schematic diagram of the structure of a mobile phone provided in one embodiment of the present application.
[0033] Figure numerals: display panel 100; array substrate 110; first opening H; red sub-pixel R; green sub-pixel G; blue sub-pixel B; reflective structure 120; convex surface T; reflective unit 121; pixel definition layer 130; insulating layer 140; first encapsulation sublayer 151; second encapsulation sublayer 152; third encapsulation sublayer 153; metal trace O; first portion of light G1; second portion of light G2; display device 10. DETAILED DESCRIPTION
[0034] 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 described embodiments 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 ordinary technicians in this field without creative work are within the scope of protection of this application.
[0035] In addition, in order to better illustrate the present application, numerous specific details are provided in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods and means well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0037] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0038] In the process of implementing the present invention, the inventors found that the following problems exist in the related art: the microlens array is stacked on the light-emitting side of the display panel. The display panel includes a stacked array substrate and a light-emitting device layer, wherein the light-emitting device layer includes sub-pixels. Since a portion of the light emitted by the sub-pixels has a large acute angle with the thickness direction of the display panel, the light intensity of this portion of light is greatly consumed during the propagation process, resulting in an inability to emit. Even if the microlens array can improve the light-emitting efficiency of the display panel, since the microlens array is far away from the light-emitting device layer of the display panel, the microlens array cannot emit this portion of light, resulting in poor focusing effect, less light output, and light output efficiency far from meeting current needs.
[0039] In order to solve the above technical problems, the present application is proposed. The display panel provided by the present application includes an array substrate, a light-emitting device layer and a reflective structure, wherein the light-emitting device layer is stacked on one side of the array substrate, including sub-pixels; the reflective structure and the light-emitting device layer are stacked on the same side of the array substrate, at least partially surrounding the sub-pixels, so that the propagation direction of light that could not be emitted before is changed by the reflective structure, so that it is emitted, thereby increasing the light output of the display panel and improving the light output efficiency of the display panel.
[0040] Figure 1a Shown is a schematic diagram of a top view of the structure of a display panel provided in an embodiment of the present application. Figure 1b for Figure 1a The cross-sectional structure diagram of the display panel along the N1N2 line is shown in FIG. Figure 1a and Figure 1b As shown, the display panel 100 provided in the embodiment of the present application includes an array substrate 110, a light-emitting device layer and a reflective structure 120, wherein the light-emitting device layer is stacked on one side of the array substrate 110, the light-emitting device layer includes sub-pixels, the reflective structure 120 and the light-emitting device layer are stacked on the same side of the array substrate 110, and the reflective structure 120 at least partially surrounds the sub-pixels.
[0041] Specifically, the reflective structure 120 includes a first opening H, and the sub-pixel is located in the first opening H. The correspondence between the sub-pixel and the first opening H can be one-to-one or many-to-one. One-to-one means that one sub-pixel is located in one first opening H; many-to-one means that multiple sub-pixels are located in the same first opening H. For example, Figure 1aAs shown, the orthographic projection of the reflective structure 120 on the array substrate 110 includes a mesh structure, and the orthographic projection of the sub-pixel on the array substrate 110 is located in the mesh of the mesh structure.
[0042] The shape of the first opening H is the same as the shape of the sub-pixel. For example, the shape of the sub-pixel is circular, and the shape of the first opening H is also circular. For another example, the shape of the sub-pixel is elliptical, and the shape of the first opening H is elliptical. For another example, the shape of the sub-pixel is rectangular, and the shape of the first opening H is rectangular.
[0043] It should be noted that the light emitted by the sub-pixel includes at least the first part of the light G1, and the acute angle between the first part of the light G1 and the thickness direction of the display panel 100 is relatively large. The present application sets a reflective structure 120 to reflect the first part of the light G1, so that the first part of the light G1 tends to propagate in the thickness direction of the display panel 100, and reduces the acute angle between the first part of the light G1 and the thickness direction of the display panel 100, which is conducive to the emission of the first part of the light G1, thereby increasing the light output of the display panel 100 and improving the light output efficiency of the display panel 100.
[0044] In addition, compared with the related art, the reflective structure 120 in the present application is closer to the light-emitting device layer, so that the reflective area is larger, thereby increasing the light output of the display panel 100 and improving the light output efficiency of the display panel 100.
[0045] In one example, the sub-pixels include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
[0046] refer to Figure 1b In the display panel 100 provided in the embodiment of the present application, the reflective structure 120 includes a convex surface T, and the convex surface T is convexly arranged in a direction away from the array substrate 110. The embodiment of the present application provides a form of a reflective structure 120, and the convex surface T form is simple and easy to implement. In addition, the first part of the light G1 is reflected at the convex surface T, and the propagation direction after being reflected by the convex surface T is close to the thickness direction of the display panel 100, which is conducive to the emission of the first part of the light G1, thereby increasing the light output of the display panel 100 and improving the light output efficiency of the display panel 100.
[0047] refer to Figure 1b The convex surface T protrudes toward the light emitting side of the display panel 100 .
[0048] Figure 2a Shown is a schematic diagram of a top view of the structure of a display panel provided in another embodiment of the present application. Figure 2b for Figure 2a The cross-sectional structure diagram of the display panel along the N3N4 line is shown in FIG. Figure 2a and Figure 2bAs shown, in the display panel 100 provided in the embodiment of the present application, the reflective structure 120 includes a plurality of reflective units 121, the reflective units enclose a first opening H, and the sub-pixels are located in the first opening H, that is, the reflective units surround the first opening H. In this case, the inclination angles of the corresponding reflective units can be independently set for different sub-pixels, which is more adaptable.
[0049] Exemplarily, the plurality of sub-pixels include sub-pixels of different colors, and at least some of the sub-pixels of different colors correspond to reflective units with different inclination angles. For example, the plurality of sub-pixels include red sub-pixels, green sub-pixels, and blue sub-pixels, and the reflective units corresponding to the red sub-pixels, green sub-pixels, and blue sub-pixels respectively have different inclination angles.
[0050] Figure 3 This is a schematic diagram of a top view of a display panel provided in another embodiment of the present application. Figure 3 Cutting the N5N6 line gives Figure 2b The cross-sectional structure shown. Figure 3 and Figure 2b As shown, in the display panel 100 provided in this embodiment, the reflective structure includes a plurality of reflective units 121, the reflective units 121 are located between adjacent sub-pixels, and the plurality of reflective units are arranged around the sub-pixels. The intervals between adjacent reflective units surrounding the same sub-pixel are equal or unequal.
[0051] Exemplarily, one or more reflective units are arranged between adjacent sub-pixels.
[0052] Exemplarily, the light reflecting unit 121 includes a micro lens.
[0053] According to the display panel provided in this embodiment, the reflective structure is implemented as a plurality of micro lenses, which has a simple structure and is easy to implement.
[0054] refer to Figure 1a-Figure 3 The display panel 100 provided in any embodiment further includes a pixel definition layer 130, which is stacked between the array substrate 110 and the reflective structure 120, the pixel definition layer 130 includes a second opening, the sub-pixel is located in the second opening, and the orthographic projection of the reflective structure 120 on the array substrate 110 is located within the orthographic projection range of the pixel definition layer 130 on the array substrate 110.
[0055] The sub-pixel includes an anode layer (not shown in the figure), and the anode layer includes a portion extending between the pixel definition layer 130 and the array substrate 110. Therefore, in the embodiment of the present application, the reflective structure 120 is stacked on the side of the pixel definition layer 130 away from the array substrate 110, thereby avoiding a short circuit between the reflective structure 120 and the anode layer.
[0056] Figure 4Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application. Figure 5 FIG. 2 is a schematic diagram of the structure of a display panel provided by another embodiment of the present application. Figure 4 and 5 As shown, in the display panel 100 provided in the embodiment of the present application, the display panel 100 also includes an insulating layer 140, which is stacked on the side of the reflective structure 120 that is away from the array substrate 110, and the insulating layer 140 includes a third opening, and the sub-pixel is located in the third opening, and the orthographic projection of the reflective structure 120 on the array substrate 110 is located within the orthographic projection range of the insulating layer 140 on the array substrate 110.
[0057] Understandably, Figure 4 The display panel 100 is shown in Figure 1b An insulating layer 140 is added to the display panel 100. Figure 5 The display panel 100 is shown in Figure 2b An insulating layer 140 is added to the display panel 100 as shown.
[0058] In some embodiments, the reflective structure 120 is conductive. At the same time, during the preparation of the display panel 100, due to the influence of the evaporation equipment, the sub-pixel is likely to be connected to the reflective structure 120, resulting in a short circuit. Therefore, the embodiment of the present application isolates the sub-pixel and the reflective structure 120 by providing an insulating layer 140, thereby avoiding the connection between the sub-pixel and the reflective structure 120 and preventing a short circuit.
[0059] Figure 6 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application. Figure 7 FIG. 2 is a schematic diagram of the structure of a display panel provided by another embodiment of the present application. Figure 6 and 7 As shown, in the display panel 100 provided in the embodiment of the present application, the display panel 100 further includes an encapsulation layer, and the encapsulation layer is stacked on a side of the reflective structure 120 that is away from the array substrate 110 .
[0060] Understandably, Figure 6 The display panel 100 is shown in Figure 4 The display panel 100 shown in the figure has an encapsulation layer added thereto. Figure 7 The display panel 100 is shown in Figure 5 An encapsulation layer is added to the display panel 100 as shown.
[0061] The embodiment of the present application protects the reflective structure 120 , the light-emitting device layer, the pixel definition layer 130 , the insulating layer 140 , etc. from being corroded by external water and oxygen by setting a packaging layer, thereby improving the stability and reliability of the display panel 100 .
[0062] In a preferred embodiment thereof, the encapsulation layer is transparent, thereby improving light transmittance.
[0063] refer to Figure 6 and 7 In the display panel 100 provided in the embodiment of the present application, the encapsulation layer includes a first encapsulation sublayer 151 and a second encapsulation sublayer 152 stacked together, the first encapsulation sublayer 151 is located between the reflective structure 120 and the second encapsulation sublayer 152, and the refractive index of the first encapsulation sublayer 151 is less than the refractive index of the second encapsulation sublayer 152.
[0064] It is understandable that the display panel 100 includes metal traces O, wherein part of the metal traces O is stacked on the side of the pixel definition layer 130 away from the array substrate 110, and the orthographic projection of the part of the metal traces O on the array substrate 110 is located within the orthographic projection range of the pixel definition layer 130 on the array substrate 110. If the propagation direction of the first part of the light G1 after being reflected by the reflective structure 120 is not changed, it is likely to be blocked by the part of the metal traces O and cannot be emitted from the display panel 100. In some embodiments, the part of the metal traces O may be touch metal traces.
[0065] Therefore, in the embodiment of the present application, a first encapsulation sublayer 151 and a second encapsulation sublayer 152 are set, and the refractive index of the first encapsulation sublayer 151 is smaller than the refractive index of the second encapsulation sublayer 152, so that the first part of the light G1 enters the first encapsulation sublayer 151 after being reflected by the reflective structure 120, and is refracted at the interface between the first encapsulation sublayer 151 and the second encapsulation sublayer 152, thereby changing the propagation direction of the first part of the light G1, so that the first part of the light G1 avoids the part of the metal wiring O and is emitted, thereby further increasing the light output of the display panel 100 and further improving the light output efficiency of the display panel 100.
[0066] Figure 8 Shown is a schematic structural diagram of a display panel provided in another embodiment of the present application. Fig. 9 FIG. 2 is a schematic diagram of the structure of a display panel provided by another embodiment of the present application. Figure 8 and 9 As shown, in a preferred embodiment, the encapsulation layer also includes a third encapsulation sublayer 153, which is stacked on the side of the second encapsulation sublayer 152 facing away from the array substrate 110, and the refractive index of the third encapsulation sublayer 153 is greater than the refractive index of the second encapsulation sublayer 152.
[0067] Understandably, Figure 8 The display panel 100 is shown in Figure 6 A third encapsulation sublayer 153 is added to the display panel 100. Fig. 9The display panel 100 is shown in Figure 7 A third encapsulation sublayer 153 is added to the display panel 100 as shown.
[0068] In the embodiment of the present application, a third encapsulation sublayer 153 is provided, and the refractive index of the third encapsulation sublayer 153 is greater than the refractive index of the second encapsulation sublayer 152, so that the first part of the light G1 is refracted at the interface between the second encapsulation sublayer 152 and the third encapsulation sublayer 153, thereby changing the propagation direction of the first part of the light G1 and making the direction in which the first part of the light G1 exits the display panel 100 approach the thickness direction of the display panel 100, thereby increasing the brightness of the display panel 100 and improving the display effect of the display panel 100 when the user looks directly at the display panel 100.
[0069] It should be noted that the light emitted by the sub-pixel at least includes a second portion of light G2, which is reflected by the film layer (eg, encapsulation layer) on the side of the light-emitting device layer away from the array substrate 110. Figure 8 and 9 In the figure, the second part of light is represented by G2. The present application reflects the second part of light G2 and enters the encapsulation layer by setting a reflective structure 120. The second part of light G2 is refracted at the interface between the first encapsulation sublayer 151 and the second encapsulation sublayer 152, and further refracted again at the interface between the second encapsulation sublayer 152 and the third encapsulation sublayer 153, and finally emitted from the display panel 100, thereby further improving the light output of the display panel 100 and further improving the light output efficiency of the display panel 100.
[0070] It is understandable that a very small amount of light in the first part of light G1 is also reflected by the film layer on the side of the light-emitting device layer away from the array substrate 110 , but the proportion of this part of light is extremely small, and most of it is reflected by the reflective structure 120 and then emitted from the display panel 100 .
[0071] In some embodiments, the material of the reflective structure 120 includes metal. For example, the material of the reflective structure 120 includes any one of titanium, molybdenum, copper, and silver. The embodiment of the present application provides a material with high reflectivity, which is easy to obtain and easy to prepare. Of course, other materials with high reflectivity can be used to prepare the reflective structure 120, and the embodiment of the present application does not impose further restrictions on this.
[0072] The specific contents of the display panel 100 provided in the present application are described in detail above. Based on the same inventive concept, the present application also provides a corresponding preparation method. The specific steps of the preparation method are described below.
[0073] Fig.10 FIG. 1 is a schematic diagram of a method for preparing a display panel according to an embodiment of the present application. Fig.10As shown, an embodiment of the present application provides a method for preparing a display panel, which includes the following steps.
[0074] Step S901 , providing an array substrate 110 .
[0075] Step S902 , preparing a reflective structure 120 on one side of the array substrate 110 .
[0076] The reflective structure 120 includes a first opening H. The reflective structure 120 includes a convex surface T, which is convexly arranged in a direction away from the array substrate 110. The reflective structure 120 may also include a plurality of reflective units 121, and the orthographic projections of the plurality of reflective units 121 on the array substrate 110 do not overlap each other. The reflective structure 120 is made of metal.
[0077] Step S903 , preparing a light emitting device layer on the same side of the array substrate 110 .
[0078] The light emitting device layer includes sub-pixels, and the sub-pixels are located in the first opening H.
[0079] The embodiment of the present application changes the propagation direction of light that could not be emitted before by preparing a reflective structure 120 , so that the light is emitted, thereby increasing the light emission of the display panel 100 and improving the light emission efficiency of the display panel 100 .
[0080] In addition, before step S902, the method further includes the following steps: preparing a pixel definition layer 130 on one side of the array substrate 110. More specifically, step S902 is to firstly sputter metal on one side of the pixel definition layer 130 by physical vapor deposition (PVD), and then use yellow light to expose, develop and etch the metal to obtain the reflective structure 120.
[0081] After step S902, the method further includes the following steps: preparing an insulating layer 140 on the side of the reflective structure 120 facing away from the array substrate 110, preparing a light-emitting device layer on the same side of the array substrate 110, preparing a first encapsulation sublayer 151 on the side of the insulating layer 140 facing away from the array substrate 110, preparing a second encapsulation sublayer 152 on the side of the first encapsulation sublayer 151 facing away from the array substrate 110, and preparing a third encapsulation sublayer 153 on the side of the second encapsulation sublayer 152 facing away from the array substrate 110.
[0082] The refractive index of the first encapsulation sublayer 151 is smaller than that of the second encapsulation sublayer 152 , and the refractive index of the third encapsulation sublayer 153 is larger than that of the second encapsulation sublayer 152 .
[0083] Fig.11 FIG. 1 is a schematic diagram of the structure of a display device provided by an embodiment of the present application. Fig.11As shown, an embodiment of the present application provides a display device 10, including a display panel 100 as mentioned in any of the above embodiments, and its technical principles and effects are similar, which will not be repeated here. It can be understood that the display panel 100 can also be applied to other display devices, such as mobile phones, tablet computers, computer monitors, televisions, wearable devices, or information query machines, and any other products or components with display functions.
[0084] Importantly, the display device 10 provided in the present application does not include a microlens array, and the light extraction efficiency is improved only by using a reflective structure in the display panel. Therefore, the thickness of the display device 10 or other display devices is reduced, which is conducive to the development of lightweight products.
[0085] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.
[0086] It should also be noted that, in the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present application. Although multiple exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize some variations, modifications, changes, additions and sub-combinations thereof.
Claims
1. A display panel, characterized in that: include: An array substrate; A light emitting device layer, stacked on one side of the array substrate, including sub-pixels; A reflective structure is stacked with the light emitting device and disposed on the same side of the array substrate, and the reflective structure at least partially surrounds the sub-pixel.
2. The display panel according to claim 1, characterized in that: The reflective structure comprises a convex surface, and the convex surface is arranged to protrude in a direction away from the array substrate.
3. The display panel according to claim 1, characterized in that: The reflective structure comprises a first opening, and the sub-pixel is located in the first opening; Preferably, the orthographic projection of the reflective structure on the array substrate includes a mesh structure, and the orthographic projection of the sub-pixel on the array substrate is located in a mesh of the mesh structure; Alternatively, the reflective structure includes a plurality of reflective units, and the reflective units enclose the first opening.
4. The display panel according to claim 1, characterized in that: The reflective structure comprises a plurality of reflective units, wherein the reflective units are located between adjacent sub-pixels, and the plurality of reflective units are arranged around the sub-pixels; Preferably, one or more reflective units are arranged between adjacent sub-pixels; Preferably, the reflective unit comprises a microlens.
5. The display panel according to claim 1, characterized in that: Also includes: A pixel definition layer is stacked between the array substrate and the reflective structure, the pixel definition layer includes a second opening, the sub-pixel is located in the second opening, and the orthographic projection of the reflective structure on the array substrate is located within the orthographic projection range of the pixel definition layer on the array substrate.
6. The display panel according to claim 1, characterized in that: Also includes: An insulating layer is stacked on a side of the reflective structure away from the array substrate, the insulating layer includes a third opening, the sub-pixel is located in the third opening, and the orthographic projection of the reflective structure on the array substrate is located within the orthographic projection range of the insulating layer on the array substrate.
7. The display panel according to claim 1, characterized in that: Also includes: An encapsulation layer, stacked on a side of the reflective structure away from the array substrate; Preferably, the encapsulation layer is transparent; Preferably, the encapsulation layer comprises a first encapsulation sublayer and a second encapsulation sublayer stacked together, the first encapsulation sublayer is located between the reflective structure and the second encapsulation sublayer, and the refractive index of the first encapsulation sublayer is smaller than the refractive index of the second encapsulation sublayer; Preferably, the encapsulation layer further comprises a third encapsulation sublayer, the third encapsulation sublayer is stacked on a side of the second encapsulation sublayer away from the array substrate, and the refractive index of the third encapsulation sublayer is greater than the refractive index of the second encapsulation sublayer.
8. The display panel according to any one of claims 1 to 7, characterized in that: The material of the reflective structure includes metal.
9. A method for preparing a display panel, characterized in that: include: Providing an array substrate; A reflective structure is prepared on one side of the array substrate, wherein the reflective structure includes a first opening; preparing a light-emitting device layer on the same side of the array substrate, wherein the light-emitting device layer includes sub-pixels; Wherein, the sub-pixel is located in the first opening.
10. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 8.