Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, the display panel comprises a substrate, a pixel definition layer, a light-emitting function layer, a packaging layer, a first reflecting layer and a second reflecting layer, the pixel definition layer is located on one side of the substrate, and the pixel definition layer is provided with a pixel opening; the light-emitting functional layer comprises a plurality of light-emitting units, and the pixel openings expose the light-emitting units; the packaging layer is located on the side, away from the substrate, of the light-emitting functional layer. The first reflecting layer is located on the side, away from the substrate, of the packaging layer; the second reflecting layer is located between the substrate and the packaging layer, and the orthographic projection of the first reflecting layer on the substrate and the orthographic projection of the second reflecting layer on the substrate are at least partially overlapped. According to the display panel, the first reflecting layer and the second reflecting layer are arranged, so that the display polarization phenomenon is reduced.

Description

Technical Field

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

[0002] Some display panels are provided with a reflective layer, which reflects part of the light emitted by the light-emitting unit to improve the light extraction rate of the display panel, or reflects external light to achieve a mirror effect. Such display panels are prone to color deviation, which affects the display effect. Summary of the invention

[0003] Embodiments of the present application provide a display panel and a display device, aiming to improve the technical problem that color shift is prone to occur in related display panels.

[0004] An embodiment of a first aspect of the present application provides a display panel, including:

[0005] substrate;

[0006] A pixel definition layer is located on one side of the substrate, and the pixel definition layer has a pixel opening;

[0007] The light-emitting functional layer includes a plurality of light-emitting units, and the pixel openings expose the light-emitting units;

[0008] The encapsulation layer is located on the side of the light-emitting functional layer facing away from the substrate;

[0009] A first reflective layer, located on a side of the encapsulation layer facing away from the substrate;

[0010] The second reflective layer is located between the substrate and the packaging layer, and the orthographic projection of the first reflective layer on the substrate at least partially overlaps with the orthographic projection of the second reflective layer on the substrate.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the second reflective layer on the substrate is located within the orthographic projection of the first reflective layer on the substrate.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the light-emitting unit on the substrate is located within the orthographic projection of the first reflective layer on the substrate.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the reflectivity of the first reflective layer is less than the reflectivity of the second reflective layer, and the light transmittance of the first reflective layer is greater than the light transmittance of the second reflective layer.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the light transmittance of the first reflective layer is greater than 40%.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel includes a first electrode layer, the first electrode layer includes a plurality of first electrodes arranged at intervals, and the first electrodes are located on a side of the light-emitting unit close to the substrate.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode includes a reflective structure.

[0017] According to any of the aforementioned embodiments of the first aspect of the present application, the first electrode layer and the second reflective layer are arranged in the same layer.

[0018] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer includes a reflective portion, and the reflective portion is spaced apart from the first electrode.

[0019] According to any of the aforementioned embodiments of the first aspect of the present application, a reflective portion is provided between adjacent first electrodes.

[0020] According to any of the aforementioned embodiments of the first aspect of the present application, the reflective portion surrounds a plurality of first openings, and the first electrodes are located in the first openings.

[0021] According to any of the aforementioned embodiments of the first aspect of the present application, the first opening is in the shape of a triangle, a polygon, a circle, or an ellipse.

[0022] According to any of the aforementioned embodiments of the first aspect of the present application, part of the pixel definition layer is located between the reflective portion and the first electrode, and the pixel definition layer covers the surface of the second reflective layer facing away from the substrate.

[0023] According to any of the aforementioned embodiments of the first aspect of the present application, the distance from the first electrode to the first reflective layer is H1, the distance from the second reflective layer to the first reflective layer is H2, and H1=H2.

[0024] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer is located on a side of the first electrode layer facing away from the substrate.

[0025] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer is located between the pixel definition layer and the encapsulation layer.

[0026] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the second reflective layer on the substrate is arranged around the orthographic projection of the pixel opening on the substrate.

[0027] According to any of the aforementioned embodiments of the first aspect of the present application, an orthographic projection of the second reflective layer on the substrate is spaced apart from an orthographic projection of the pixel opening on the substrate.

[0028] According to any of the aforementioned embodiments of the first aspect of the present application, the portion of the orthographic projection of the second reflective layer on the substrate is located between the orthographic projections of adjacent pixel openings on the substrate.

[0029] According to any of the aforementioned embodiments of the first aspect of the present application, the orthographic projection of the first electrode on the substrate overlaps with the orthographic projection of the second reflective layer on the substrate.

[0030] According to any of the aforementioned embodiments of the first aspect of the present application, the substrate includes a substrate and a driving circuit layer arranged on one side of the substrate, and the second reflective layer is located between the driving circuit layer and the packaging layer.

[0031] According to any of the aforementioned embodiments of the first aspect of the present application, the encapsulation layer includes a first encapsulation sublayer and a second encapsulation sublayer, the first encapsulation sublayer is located on a side of the second encapsulation sublayer close to the substrate, and the second reflective layer is located between the driving circuit layer and the second encapsulation sublayer.

[0032] According to any of the aforementioned embodiments of the first aspect of the present application, the pixel definition layer, the first encapsulation sublayer and the second encapsulation sublayer are stacked in a direction away from the substrate, and the orthographic projection of the first encapsulation sublayer on the substrate covers the orthographic projection of the light-emitting unit on the substrate.

[0033] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer is located between the first encapsulation sublayer and the second encapsulation sublayer.

[0034] According to any of the aforementioned embodiments of the first aspect of the present application, the first encapsulation sublayer is an inorganic encapsulation sublayer, and the second encapsulation sublayer is an organic encapsulation sublayer.

[0035] According to any of the aforementioned embodiments of the first aspect of the present application, the display panel also includes a flat layer and a first electrode layer, the first electrode layer is arranged on the side of the flat layer away from the substrate, the first electrode layer includes a plurality of first electrodes arranged at intervals, the first electrodes are located on the side of the light-emitting unit close to the substrate, and the second reflective layer is arranged on the same layer as the flat layer.

[0036] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer is a conductive layer.

[0037] According to any of the aforementioned embodiments of the first aspect of the present application, the substrate includes a substrate and a driving circuit layer arranged on one side of the substrate, the driving circuit layer includes a conductive structure, and the orthographic projection of the second reflective layer on the substrate overlaps with the orthographic projection of at least part of the conductive structure on the substrate.

[0038] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer is electrically connected to the external ground terminal.

[0039] According to any of the aforementioned embodiments of the first aspect of the present application, the material of the second reflective layer includes at least one of silver metal, magnesium metal, and aluminum metal.

[0040] According to any of the aforementioned embodiments of the first aspect of the present application, the second reflective layer includes a plurality of sub-layers, and the sub-layers are stacked in a direction away from the substrate.

[0041] According to any of the aforementioned embodiments of the first aspect of the present application, the multiple sub-layers include a first sub-layer, a second sub-layer, and a third sub-layer stacked in a direction away from the substrate.

[0042] According to any of the aforementioned embodiments of the first aspect of the present application, the third sub-layer is a light-transmitting layer, and the reflectivity of the second sub-layer is greater than the reflectivity of the third sub-layer.

[0043] An embodiment of the second aspect of the present application further provides a display device, comprising a display panel of any of the above-mentioned embodiments of the first aspect.

[0044] In the display panel provided in the embodiment of the present application, by providing a second reflective layer, the light reflected toward the substrate through the first reflective layer can be reflected again, thereby improving the light extraction rate of the display panel; compared with the related art in which a functional layer with reflective capability is reused, the second reflective layer can have a richer position and shape, thereby avoiding or reducing the concentration of reflected light obtained by reflecting light emitted by the same light-emitting unit in a smaller range, avoiding or reducing the color cast of the display panel, and improving the display effect of the display panel; the orthographic projection of the first reflective layer on the substrate and the orthographic projection of the second reflective layer on the substrate at least partially overlap, thereby reducing or avoiding the light reflected toward the substrate by the first reflective layer not being reflected by the second reflective layer, thereby increasing the light reflected by the first reflective layer entering the second reflective layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0047] Figure 2 is a partial planar structural schematic diagram of a display panel provided in some embodiments of the present application;

[0048] Figure 3 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0049] Figure 4 is a partial planar structural schematic diagram of a display panel provided in some embodiments of the present application;

[0050] Figure 5 is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0051] Figure 6is a schematic diagram of a partial cross-sectional structure of a display panel provided in some embodiments of the present application;

[0052] Figure 7 It is a schematic diagram of a partial cross-sectional structure of a second reflective layer provided in some embodiments of the present application.

[0053] Description of reference numerals:

[0054] 1. Substrate; 11. Underlying layer; 13. Driving circuit layer; 131. Active layer; 132. Gate layer; 133. Drain; 134. Source; 135. First electrode plate; 136. Second electrode plate; 2. Pixel definition layer; 21. Pixel opening; 3. Light-emitting unit; 4. First reflection layer; 5. Second reflection layer; 51. First opening; 52. Reflection part; 53. First sublayer; 54. Second sublayer; 55. Third sublayer; 6. First electrode layer; 61. First electrode; 7. Second electrode layer; 8. Encapsulation layer; 81. First encapsulation sublayer; 82. Second encapsulation sublayer; 83. Third encapsulation sublayer; 9. Flat layer. DETAILED DESCRIPTION

[0055] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0057] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "on" or "over" another layer or another region, it may mean that it is directly on the other layer or another region, or that other layers or regions are included between it and the other layer or another region. Moreover, if the component is turned over, the layer or a region will be "below" or "beneath" another layer or another region.

[0058] Some display panels are provided with a reflective layer, which reflects part of the light emitted by the light-emitting unit to improve the light extraction rate of the display panel, or reflects external light to achieve a mirror effect. Such display panels are prone to color deviation, which affects the display effect.

[0059] In the related art, some functional layers of the multiplexed display panel assist the reflective layer, such as the electrode layer. The light emitted by the light-emitting unit is reflected at the reflective layer, and the reflected light is reflected again at the electrode layer. Since the electrode layer needs to be patterned in coordination with the light-emitting unit, there is a certain gap between adjacent electrodes in the electrode layer, and the shape of the electrode needs to be adapted to the shape of the light-emitting unit. The light emitted by the same light-emitting unit passes through the electrode layer and the reflected light is concentrated in a smaller range, thereby causing the color shift phenomenon of the display panel.

[0060] In order to solve the above problems, embodiments of the present application provide a display panel and a display device. Embodiments of the display panel and the display device will be described below in conjunction with the accompanying drawings.

[0061] In a first aspect, the present application provides a display panel, such as Figure 1 and Figure 2 As shown, a display panel includes a substrate 1, a pixel definition layer 2, a light-emitting functional layer, an encapsulation layer 8, a first reflective layer 4 and a second reflective layer 5, wherein the pixel definition layer 2 is located on one side of the substrate 1, and the pixel definition layer 2 has a pixel opening 21; the light-emitting functional layer includes a plurality of light-emitting units 3, and the pixel opening 21 exposes the light-emitting units 3; the encapsulation layer 8 is located on the side of the light-emitting functional layer away from the substrate 1; the first reflective layer 4 is located on the side of the encapsulation layer 8 away from the substrate 1; the second reflective layer 5 is located between the substrate 1 and the encapsulation layer 8, and the orthographic projection of the first reflective layer 4 on the substrate 1 at least partially overlaps with the orthographic projection of the second reflective layer 5 on the substrate 1.

[0062] An embodiment of the present application provides a display panel, which may be an organic light emitting diode (OLED) display panel.

[0063] The pixel definition layer 2 includes a pixel opening 21, and the pixel opening 21 may be multiple, and the multiple pixel openings 21 are distributed at intervals. At least part of the light-emitting unit 3 can be arranged in the pixel opening 21, and the light-emitting unit 3 is used to realize the light-emitting display of the display panel. The pixel definition layer 2 is spaced between adjacent light-emitting units 3, which can avoid or reduce the crosstalk of carriers in adjacent light-emitting units 3.

[0064] The plurality of light emitting units 3 can emit light of different colors respectively. The light emitting unit 3 can be a red light emitting element, a blue light emitting element and a green light emitting element. The number of the pixel openings 21 can correspond to the number of the light emitting units 3 one by one.

[0065] The encapsulation layer 8 can be located on the side of the pixel definition layer 2 away from the substrate 1. The encapsulation layer 8 can encapsulate the light-emitting unit 3, isolate water and oxygen from entering the light-emitting functional layer, and can also avoid or reduce the failure of the light-emitting functional layer caused by mechanical external force, thereby improving the reliability of the display panel. The encapsulation layer 8 can be an inorganic material and / or an organic material. The inorganic material can specifically be an inorganic material such as silicon nitride, silicon oxide, and silicon oxynitride, and can specifically be formed by a CVD (Chemical Vapor Deposition) process. The organic material can be made of resin or polymer organic material, and can specifically be formed by an IJP (Inkjet printing) process.

[0066] The first reflective layer 4 and the second reflective layer 5 both have reflective capabilities. Figure 1 As shown by the dotted line L1, part of the light emitted by the light emitting unit 3 can be directly emitted from the display panel through the first reflective layer 4. Figure 1 As shown by the middle dotted line L2, a part of the light is emitted toward the substrate 1 after being reflected by the first reflective layer 4, and this part of the light can be reflected again by the second reflective layer 5 and emitted toward the first reflective layer 4, thereby improving the light extraction rate of the display panel.

[0067] In the embodiment provided in the present application, by providing a second reflective layer 5, the light reflected by the first reflective layer 4 toward the substrate 1 can be reflected again, thereby improving the light extraction rate of the display panel; compared with the related art in which a functional layer with reflective ability is reused, the second reflective layer 5 can have a richer position and shape, thereby avoiding or reducing the concentration of reflected light obtained by reflecting light emitted by the same light-emitting unit 3 in a smaller range, avoiding or reducing the color cast of the display panel, and improving the display effect of the display panel; the orthographic projection of the first reflective layer 4 on the substrate 1 and the orthographic projection of the second reflective layer 5 on the substrate 1 at least partially overlap, thereby reducing or avoiding the light reflected by the first reflective layer 4 toward the substrate 1 not being reflected by the second reflective layer 5, and increasing the light reflected by the first reflective layer 4 entering the second reflective layer 5.

[0068] In some embodiments, the orthographic projection of the second reflective layer 5 on the substrate 1 is located within the orthographic projection of the first reflective layer 4 on the substrate 1 to ensure that the reflected light emitted from the first reflective layer 4 can enter the second reflective layer 5 .

[0069] In some other embodiments, the orthographic projection of the light emitting unit 3 on the substrate 1 is located within the orthographic projection of the first reflective layer 4 on the substrate 1 .

[0070] The first reflective layer 4 may be a layer structure arranged on the entire surface, and the orthographic projection of the light emitting unit 3 on the substrate 1 is located within the orthographic projection of the first reflective layer 4 on the substrate 1 , so that all or most of the light emitted by the light emitting unit 3 can be incident on the first reflective layer 4 .

[0071] The orthographic projection of the light emitting unit 3 on the substrate 1 is located within the orthographic projection of the first reflective layer 4 on the substrate 1 , which is beneficial for the first reflective layer 4 to achieve a mirror effect, or for the first reflective layer 4 to replace the polarizer.

[0072] In some embodiments, the reflectivity of the first reflective layer 4 is lower than the reflectivity of the second reflective layer 5 , and the light transmittance of the first reflective layer 4 is higher than the light transmittance of the second reflective layer 5 .

[0073] The light transmittance of the first reflective layer 4 is greater than that of the second reflective layer 5, so that part of the light can pass through the first reflective layer 4 and exit the display panel. The reflectivity of the first reflective layer 4 is less than that of the second reflective layer 5, so as to reduce or avoid the reflected light reflected from the first reflective layer 4 passing through the second reflective layer 5.

[0074] In some embodiments, the light transmittance of the first reflective layer 4 is greater than 40%.

[0075] Compared with the polarizer in the related art, the light transmittance of the first reflective layer 4 is higher. The light transmittance of the second reflective layer 5 can be 0, that is, the second reflective layer 5 can be opaque. Optionally, the light transmittance of the first reflective layer 4 is greater than 43%.

[0076] In some embodiments, the display panel includes a first electrode layer 6 , the first electrode layer 6 includes a plurality of first electrodes 61 arranged at intervals, and the first electrodes 61 are located on a side of the light emitting unit 3 close to the substrate 1 .

[0077] The display panel may further include a second electrode layer 7. One of the first electrode layer 6 and the second electrode layer 7 may be used as an anode electrode, and the other may be used as a cathode electrode. The first electrode layer 6, the light-emitting unit 3, and the second electrode layer 7 may be stacked and contacted in sequence to achieve electrical conduction among the first electrode layer 6, the light-emitting unit 3, and the second electrode layer 7 to drive the light-emitting unit 3 to emit light. Optionally, the first electrode 61 is an anode electrode, and the second electrode layer 7 is a cathode electrode.

[0078] One of the first electrode layer 6 and the second electrode layer 7 can be a surface electrode provided on the entire surface, and the other can be a point electrode, that is, each light-emitting unit 3 is electrically connected to the surface electrode, and the surface electrode can provide the same voltage level for each light-emitting unit 3 to simplify the circuit setting of the display panel; each light-emitting unit 3 is electrically connected to a different first electrode 61, and different first electrodes 61 can provide different voltage levels for each light-emitting unit 3. Optionally, the second electrode layer 7 is provided on the entire surface, and the first electrode 61 is a point electrode.

[0079] In some embodiments, the first electrode 61 includes a reflective structure.

[0080] All or part of the first electrode 61 is a reflective structure, and the reflective structure can be made of a material with reflective ability, so that the light reflected toward the substrate 1 through the first reflective layer 4 can be partially reflected again through the second reflective layer 5 and partially reflected again through the first electrode 61, thereby improving the light output rate of the display panel.

[0081] In some embodiments, the second electrode layer 7 is a light-transmitting electrode layer, so that the light emitted by the light-emitting unit 3 can pass through the second electrode layer 7 .

[0082] In some embodiments, the first electrode layer 6 and the second reflective layer 5 are disposed in the same layer.

[0083] The first electrode layer 6 and the second reflective layer 5 are arranged in the same layer, that is, the first electrode layer 6 and the second reflective layer 5 can be formed on the same outer surface, for example, the outer surface of the driving circuit layer 13 facing away from the substrate 1. When the first electrode layer 6 and the second reflective layer 5 are prepared by the same material, the first electrode layer 6 and the second reflective layer 5 can be prepared in the same step; when the first electrode layer 6 and the second reflective layer 5 are prepared by different materials, the first electrode layer 6 and the second reflective layer 5 can be prepared in sequence. The first electrode layer 6 and the second reflective layer 5 can be overlapped, so that the first electrode layer 6 and the second reflective layer 5 arranged in the same layer have the same potential; the first electrode layer 6 and the second reflective layer 5 can also be disconnected by pattern processing, so that adjacent first electrodes 61 can have different potentials.

[0084] In some embodiments, the second reflective layer 5 includes a reflective portion 52 , and the reflective portion 52 is spaced apart from the first electrode 61 to prevent adjacent first electrodes 61 from being electrically connected through the second reflective layer 5 , thereby preventing adjacent first electrodes 61 from having crosstalk.

[0085] In some embodiments, a reflective portion 52 is disposed between adjacent first electrodes 61 to increase the amount of reflected light emitted from the first reflective layer 4 to between adjacent first electrodes 61 that is reflected again by the second reflective layer 5 , thereby improving the uniformity of light reflected by the first electrodes 61 and the reflective portion 52 .

[0086] In some embodiments, the reflective portion 52 surrounds a plurality of first openings 51 , and the first electrodes 61 are located in the first openings 51 .

[0087] The first electrode 61 is located in the first opening 51, which can be understood as the opening size of the first opening 51 is larger than the size of the first electrode 61, and can also be understood as the orthographic projection of the first electrode 61 on the substrate 1 and the orthographic projection of the reflective portion 52 on the substrate 1 are arranged at intervals. The first electrode 61 is located in the first opening 51, so that the reflective portion 52 is arranged around the first electrode 61, so that the second reflective layer 5 is arranged on the surrounding side of the first electrode 61 to reflect light.

[0088] In some embodiments, the first opening 51 is in the shape of a triangle, a polygon, a circle, or an ellipse.

[0089] The polygon may be a quadrilateral, a pentagon, a hexagon, and so on, and the polygon may also be a polygon with arc chamfers. Those skilled in the art may set the first opening 51 to a desired shape as required.

[0090] The shape of the first opening 51 is adapted to the first electrode 61, so that the reflective portion 52 can be arranged around the first electrode 61 and increase the distribution area of ​​the reflective portion 52 in the display panel. For example: if the first electrode 61 is a circular electrode, the first opening 51 is circular; if the first electrode 61 is a quadrilateral electrode, the first opening 51 is a quadrilateral; if the first electrode 61 is a triangular electrode, the first opening 51 is triangular.

[0091] In some embodiments, a portion of the pixel definition layer 2 is located between the reflective portion 52 and the first electrode 61 , and the pixel definition layer 2 covers the surface of the second reflective layer 5 facing away from the substrate 1 .

[0092] The pixel definition layer 2 may be made of insulating material, and a portion of the pixel definition layer 2 is located between the second reflective layer 5 and the first electrode 61 , so that the second reflective layer 5 and the first electrode 61 may be insulated by the pixel definition layer 2 .

[0093] Optionally, in the process of preparing the display panel, a patterned reflective portion 52 and a first electrode 61 are first prepared on the surface of the driving circuit layer 13 facing away from the substrate 1, and then a pixel definition material layer is arranged on the side of the reflective portion 52 and the first electrode 61 facing away from the substrate 1, and the pixel definition material layer is opened to obtain a pixel definition layer 2 having a pixel opening 21, at least part of the first electrode 61 is exposed from the pixel opening 21, and the pixel definition layer 2 covers the surface of the reflective portion 52 facing away from the substrate 1.

[0094] In some embodiments, the distance from the first electrode 61 to the first reflective layer 4 is H1, the distance from the second reflective layer 5 to the first reflective layer 4 is H2, and H1=H2.

[0095] By setting H1=H2, the optical path of the reflected light from the first reflective layer 4 to the first electrode 61 and the reflected light from the first reflective layer 4 to the second reflective layer 5 is reduced, which facilitates the design of the emission angle range of the reflected light from the first electrode 61 and the reflected light from the second reflective layer 5.

[0096] In some embodiments, the display panel further includes a planar layer 9 on which the first electrode 61 and the second reflective layer 5 are disposed. The planar layer 9 is located on the side of the driving circuit layer 13 away from the substrate 11 , and can be used to planarize the drain 133 and the source 134 .

[0097] See also Figure 3 and Figure 4 , the second reflective layer 5 and the first electrode layer 6 may not be arranged in the same layer. In other embodiments, the second reflective layer 5 is located on the side of the first electrode layer 6 away from the substrate 1, so that part of the light reflected by the first reflective layer 4 is reflected by the second reflective layer 5 before being reflected by the first electrode layer 6, thereby reducing the influence of the patterned first electrode layer 6 on the light emitted from the display panel, so that the reflected light is evenly distributed.

[0098] In some embodiments, the second reflective layer 5 is located between the pixel definition layer 2 and the encapsulation layer 8 .

[0099] After preparing the pixel definition layer 2, the second reflection layer 5 can be formed on the surface of the pixel definition layer 2 away from the substrate 1, and after preparing the light-emitting unit 3, the second reflection layer 5 can be formed on the surface of the pixel definition layer 2 away from the substrate 1. The pixel definition layer 2 has a certain hardness, so that the pixel definition layer 2 can effectively support the second reflection layer 5.

[0100] In some embodiments, the orthographic projection of the second reflective layer 5 on the substrate 1 is disposed around the orthographic projection of the pixel opening 21 on the substrate 1 to reduce the direct reflection of the light emitted from the light emitting unit 3 by the second reflective layer 5 .

[0101] The orthographic projection of the pixel opening 21 on the substrate 1 can be as follows: Figure 3 The direction indicated by the middle dotted line forms an orthographic projection S on the substrate 1. The second reflective layer 5 can be formed on the surface of the pixel definition layer 2 facing away from the substrate 1. The second reflective layer 5 can also be located outside the pixel opening 21, and the light-emitting unit 3 is located inside the pixel opening 21, so that the orthographic projection of the second reflective layer 5 on the substrate 1 is arranged around the orthographic projection of the pixel opening 21 on the substrate 1.

[0102] In some embodiments, the orthographic projection of the second reflective layer 5 on the substrate 1 does not overlap or partially overlaps with the orthographic projection of the pixel opening 21 on the substrate 1 to reduce or avoid that the light emitted by the light emitting unit 3 is directly reflected by the second reflective layer 5 without being reflected by the first reflective layer 4 .

[0103] In some other embodiments, the orthographic projection of the second reflective layer 5 on the substrate 1 is spaced apart from the orthographic projection of the pixel opening 21 on the substrate 1 to reduce the direct reflection of the light emitted from the light emitting unit 3 by the second reflective layer 5 .

[0104] In some embodiments, the orthographic projection of the second reflective layer 5 on the substrate 1 is located between the orthographic projections of adjacent pixel openings 21 on the substrate 1 , so that the second reflective layer 5 is provided around the circumference of the light-emitting unit 3 located in the pixel opening 21 to reflect the light emitted by the light-emitting unit 3 again.

[0105] In some embodiments, an orthographic projection of the first electrode 61 on the substrate 1 overlaps with an orthographic projection of the second reflective layer 5 on the substrate 1 .

[0106] The first electrode 61 includes a central portion 611 and an edge portion 612 connected to each other, the edge portion 612 is arranged around the central portion 611, the surface of the edge portion 612 facing away from the substrate 1 is covered by the pixel definition layer 2, the surface of the central portion 611 facing away from the substrate 1 is in contact with the light-emitting unit 3, the orthographic projection of the central portion 611 on the substrate 1 may not overlap with the orthographic projection of the second reflective layer 5 on the substrate 1, and the edge of the orthographic projection of the edge portion 612 on the substrate 1 overlaps with the orthographic projection of the second reflective layer 5 on the substrate 1, so as to reduce or avoid the light reflected from the first reflective layer 4 not passing through the first electrode 61 or the second reflective layer 5.

[0107] In some embodiments, the substrate 1 includes a substrate 11 and a driving circuit layer 13 disposed on one side of the substrate 11 , and the second reflective layer 5 is located between the driving circuit layer 13 and the encapsulation layer 8 .

[0108] After preparing the pixel definition layer 2, the second reflection layer 5 can be formed on the surface of the pixel definition layer 2 away from the substrate 1, and after preparing the light-emitting unit 3, the second reflection layer 5 can be formed on the surface of the pixel definition layer 2 away from the substrate 1. The pixel definition layer 2 has a certain hardness, so that the pixel definition layer 2 can effectively support the second reflection layer 5. After the drive circuit layer 13 is prepared, the second reflection layer 5 can also be formed on the surface of the drive circuit layer 13 away from the substrate 11.

[0109] A variety of conductive structures are provided in the driving circuit layer 13, and the thickness of each conductive structure is different and the distribution position is up and down. The second reflective layer 5 is provided between the driving circuit layer 13 and the packaging layer 8, so as to avoid the second reflective layer 5 and the conductive structure in the driving circuit layer 13 being in the same layer, thereby avoiding the diffraction effect of the reflected light passing through the second reflective layer 5 and the conductive structure.

[0110] See also Figure 5In some embodiments, the encapsulation layer 8 includes a first encapsulation sublayer 81 and a second encapsulation sublayer 82 , the first encapsulation sublayer 81 is located on a side of the second encapsulation sublayer 82 close to the substrate 1 , and the second reflective layer 5 is located between the driving circuit layer 13 and the second encapsulation sublayer 82 .

[0111] The first encapsulation sublayer 81 and the second encapsulation sublayer 82 may both include organic materials and / or inorganic materials. The first encapsulation sublayer 81 and the second encapsulation sublayer 82 may be prepared using different materials so that the first encapsulation sublayer 81 and the second encapsulation sublayer 82 may have different properties to improve the display panel's ability to resist water and oxygen.

[0112] The second reflective layer 5 is arranged between the driving circuit layer 13 and the second encapsulation sublayer 82, so as to increase the spacing distance between the second reflective layer 5 and the first reflective layer 4, and avoid the second reflective layer 5 and the conductive structure in the driving circuit layer 13 being in the same layer, thereby avoiding the diffraction effect of the reflected light passing through the second reflective layer 5 and the conductive structure.

[0113] In some embodiments, the pixel definition layer 2 , the first encapsulation sublayer 81 , and the second encapsulation sublayer 82 are stacked in a direction away from the substrate 1 , and the orthographic projection of the first encapsulation sublayer 81 on the substrate 1 covers the orthographic projection of the light emitting unit 3 on the substrate 1 .

[0114] The orthographic projection of the first encapsulation sublayer 81 on the substrate 1 covers the orthographic projection of the light emitting unit 3 on the substrate 1 , so that the first encapsulation sublayer 81 can effectively encapsulate the light emitting unit 3 to improve the ability of the display panel to resist water and oxygen.

[0115] In some embodiments, the second reflective layer 5 is located between the first encapsulation sublayer 81 and the second encapsulation sublayer 82 .

[0116] The second reflective layer 5 is arranged on the first encapsulation sublayer 81 , so as to reduce the influence of the process of preparing the second reflective layer 5 on the light-emitting functional layer.

[0117] In some embodiments, the first encapsulation sublayer 81 is an inorganic encapsulation sublayer, and the second encapsulation sublayer 82 is an organic encapsulation sublayer.

[0118] The first encapsulation sublayer 81 is a silicon-containing inorganic material layer. The silicon-containing inorganic material layer can be an inorganic material such as silicon nitride, silicon oxide, silicon oxynitride, that is, the first encapsulation sublayer 81 can include at least one (for example, one or more) of silicon nitride, silicon oxide, silicon oxynitride and other inorganic materials. Compared with the organic material layer, the inorganic material layer has a better ability to block water and oxygen. The light-emitting functional layer is encapsulated by the first encapsulation sublayer 81 to improve the ability of the display panel to resist water and oxygen. The material layer and the inorganic material layer encapsulate the light-emitting functional layer together to improve the comprehensive ability of the display panel to resist water and oxygen.

[0119] In some embodiments, the display panel further includes a third encapsulation sublayer 83 , and the third encapsulation sublayer 83 is disposed on a side of the second encapsulation sublayer 82 facing away from the substrate 1 .

[0120] By providing the third encapsulation sublayer 83, the ability of the light-emitting functional layer to isolate water and oxygen is further improved.

[0121] In some embodiments, the third encapsulation sub-layer 83 is an inorganic material layer.

[0122] The material of the third encapsulation sublayer 83 may be the same as that of the first encapsulation sublayer 81 to simplify the manufacturing process. Optionally, the material of the third encapsulation sublayer 83 may be different from that of the first encapsulation sublayer 81 .

[0123] See also Figure 6 In some embodiments, the display panel further includes a planar layer 9 and a first electrode layer 6, wherein the planar layer 9 is disposed on a side of the driving circuit layer away from the substrate, the first electrode layer 6 is disposed on a side of the planar layer 9 away from the substrate 1, the first electrode layer 6 includes a plurality of first electrodes 61 disposed at intervals, the first electrode 61 is located on a side of the light-emitting unit 3 close to the substrate 1, and the second reflective layer 5 is disposed on the same layer as the planar layer 9.

[0124] The flat layer 9 can provide a flat surface for the first electrode layer 6, which is conducive to preparing the first electrode layer 6 with a desired pattern. The second reflective layer 5 and the flat layer 9 can be formed on the same surface simultaneously or in steps. The second reflective layer 5 and the flat layer 9 are arranged on the same layer, thereby reducing the difference between the spacing distance between the light-emitting unit 3 and the first reflective layer 4 and the spacing distance between the second reflective layer 5 and the first reflective layer 4, and facilitating the planning of the emission range of the reflected light obtained by the second reflective layer 5.

[0125] In some embodiments, the second reflective layer 5 is a conductive layer.

[0126] In addition to reflecting light, the second reflective layer 5 also has a conductive function, so that the second reflective layer 5 can not only be used as a signal routing to achieve signal transmission, but also as a shielding layer to shield the electrical signals on both sides thereof, thereby reducing the mutual interference of the electrical signals on both sides. For example, the shielding layer shields the electrical signals of the driving circuit layer 13 and the touch layer on both sides thereof.

[0127] In some embodiments, the substrate 1 includes a substrate 11 and a driving circuit layer 13 arranged on one side of the substrate 11, the driving circuit layer 13 includes a conductive structure, and the orthographic projection of the second reflective layer 5 on the substrate 1 at least overlaps with the orthographic projection of a portion of the conductive structure on the substrate 1, so that the second reflective layer 5 can shield the electrical signal transmitted by the portion of the conductive structure.

[0128] The driving circuit layer 13 may include an active layer 131, a gate insulating layer (GI), a gate layer 132 (GT), a first interlayer dielectric layer (CI), a second interlayer dielectric layer (ILD), and a source-drain metal layer (SD) stacked in sequence. The source-drain metal layer may include a drain 133 and a source 134. The active layer 131 may be amorphous silicon a-si, p-type doped silicon p-Si, or metal oxide. In specific implementation, it may be flexibly arranged as needed and is not limited here.

[0129] The driving circuit layer 13 also includes a transistor and a storage capacitor. The transistor includes an active layer 131, a gate layer 132, a drain 133 and a source 134. The storage capacitor includes a first plate 135 and a second plate 136. As an example, the gate layer 132 and the first plate 135 are prepared in the same layer; the second plate 136 can be located between the first interlayer dielectric layer and the second interlayer dielectric layer. The conductive structure can be all or part of the transistor and / or the storage capacitor.

[0130] In some embodiments, the second reflective layer 5 is electrically connected to an external ground terminal.

[0131] The second reflective layer 5 is electrically connected to the external ground terminal, so that the second reflective layer 5 can have a stable voltage, which is beneficial for the second reflective layer 5 to shield the electrical signals of the signal wirings on both sides thereof.

[0132] In some embodiments, the material of the second reflective layer 5 includes at least one of silver metal, magnesium metal, and aluminum metal.

[0133] The second reflective layer 5 may be a metal reflective layer, and the material of the second reflective layer 5 may include at least one of silver metal, magnesium metal, and aluminum metal to achieve light reflection and signal shielding.

[0134] Please refer to Figure 7 In some other embodiments, the second reflective layer 5 includes a plurality of sub-layers, and the sub-layers are stacked in a direction away from the substrate 1 .

[0135] The multiple sub-layers may be made of the same or different materials, so that each sub-layer in the second reflective layer 5 may have different physical and chemical properties.

[0136] In some embodiments, the plurality of sub-layers including the first sub-layer 53 , the second sub-layer 54 and the third sub-layer 55 stacked in a direction away from the substrate 1 may be ITO (indium tin oxide) / Ag (silver) / ITO respectively.

[0137] In some embodiments, the third sublayer 55 is a light-transmitting layer, and the reflectivity of the second sublayer 54 is greater than the reflectivity of the third sublayer 55. Light can pass through the third sublayer 55 and then be reflected by the second sublayer 54.

[0138] The display panel of the embodiment of the present application further includes a touch layer, an adhesive layer and a cover plate arranged on the side of the encapsulation layer 8 away from the substrate 1. The specific structures of the touch layer, the adhesive layer and the cover plate can refer to the conventional configuration in the art, and the present application does not limit them.

[0139] The embodiment of the second aspect of the present application also provides a display device, including the display panel of any of the above-mentioned embodiments of the first aspect. Since the display device provided by the embodiment of the second aspect of the present application includes the display panel of any of the above-mentioned embodiments of the first aspect, the display device provided by the embodiment of the second aspect of the present application has the beneficial effects of the display panel of any of the above-mentioned embodiments of the first aspect, which will not be repeated here.

[0140] The display device in the embodiments of the present application includes but is not limited to mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, consoles, and other devices with display functions.

[0141] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that: include: substrate; A pixel definition layer, located on one side of the substrate, wherein the pixel definition layer has a pixel opening; The light-emitting functional layer includes a plurality of light-emitting units, and the pixel opening exposes the light-emitting units; An encapsulation layer, located on a side of the light-emitting functional layer away from the substrate; A first reflective layer, located on a side of the encapsulation layer away from the substrate; The second reflective layer is located between the substrate and the packaging layer, and the orthographic projection of the first reflective layer on the substrate at least partially overlaps with the orthographic projection of the second reflective layer on the substrate.

2. The display panel according to claim 1, characterized in that: The orthographic projection of the second reflective layer on the substrate is located within the orthographic projection of the first reflective layer on the substrate; Preferably, the orthographic projection of the light emitting unit on the substrate is located within the orthographic projection of the first reflective layer on the substrate; Preferably, the reflectivity of the first reflective layer is smaller than the reflectivity of the second reflective layer, and the light transmittance of the first reflective layer is larger than the light transmittance of the second reflective layer; Preferably, the light transmittance of the first reflective layer is greater than 40%.

3. The display panel according to claim 1, characterized in that: The display panel comprises a first electrode layer, the first electrode layer comprises a plurality of first electrodes arranged at intervals, and the first electrodes are located on a side of the light emitting unit close to the substrate; Preferably, the first electrode comprises a reflective structure.

4. The display panel according to claim 3, characterized in that: The first electrode layer and the second reflective layer are arranged in the same layer; Preferably, the second reflective layer comprises a reflective portion, and the reflective portion is spaced apart from the first electrode; Preferably, the reflecting portion is disposed between adjacent first electrodes; Preferably, the reflective portion encloses a plurality of first openings, and the first electrodes are located in the first openings; Preferably, the first opening is one of a triangle, a polygon, a circle, and an ellipse; Preferably, part of the pixel definition layer is located between the reflective portion and the first electrode, and the pixel definition layer covers a surface of the second reflective layer away from the substrate; Preferably, a distance from the first electrode to the first reflective layer is H1, a distance from the second reflective layer to the first reflective layer is H2, and H1=H2.

5. The display panel according to claim 3, characterized in that: The second reflective layer is located on a side of the first electrode layer away from the substrate; Preferably, the second reflective layer is located between the pixel definition layer and the encapsulation layer; Preferably, the orthographic projection of the second reflective layer on the substrate is arranged around the orthographic projection of the pixel opening on the substrate; Preferably, the orthographic projection of the second reflective layer on the substrate is arranged at an interval with the orthographic projection of the pixel opening on the substrate; Preferably, the portion of the orthographic projection of the second reflective layer on the substrate is located between the orthographic projections of adjacent pixel openings on the substrate; Preferably, an orthographic projection of the first electrode on the substrate overlaps with an orthographic projection of the second reflective layer on the substrate.

6. The display panel according to claim 1, characterized in that: The base plate comprises a substrate and a driving circuit layer arranged on one side of the substrate, and the second reflecting layer is located between the driving circuit layer and the packaging layer.

7. The display panel according to claim 6, characterized in that: The encapsulation layer comprises a first encapsulation sublayer and a second encapsulation sublayer, the first encapsulation sublayer is located on a side of the second encapsulation sublayer close to the substrate, and the second reflective layer is located between the driving circuit layer and the second encapsulation sublayer; Preferably, the pixel definition layer, the first encapsulation sublayer and the second encapsulation sublayer are stacked in a direction away from the substrate, and the orthographic projection of the first encapsulation sublayer on the substrate covers the orthographic projection of the light emitting unit on the substrate; Preferably, the second reflective layer is located between the first encapsulation sublayer and the second encapsulation sublayer; Preferably, the first encapsulation sublayer is an inorganic encapsulation sublayer, and the second encapsulation sublayer is an organic encapsulation sublayer; Preferably, the display panel further comprises a planar layer, wherein the planar layer is arranged on a side of the driving circuit layer away from the substrate, and the second reflective layer is arranged on the same layer as the planar layer.

8. The display panel according to claim 1, characterized in that: The second reflective layer is a conductive layer; Preferably, the substrate comprises a substrate and a driving circuit layer arranged on one side of the substrate, the driving circuit layer comprises a conductive structure, and the orthographic projection of the second reflective layer on the substrate at least overlaps with the orthographic projection of a portion of the conductive structure on the substrate; Preferably, the second reflective layer is electrically connected to an external ground terminal; Preferably, the material of the second reflective layer includes at least one of silver metal, magnesium metal and aluminum metal.

9. The display panel according to claim 8, characterized in that: The second reflective layer includes a plurality of sub-layers, and the sub-layers are stacked in a direction away from the substrate; Preferably, the plurality of sub-layers include a first sub-layer, a second sub-layer and a third sub-layer stacked in a direction away from the substrate; Preferably, the third sub-layer is a light-transmitting layer, and the reflectivity of the second sub-layer is greater than the reflectivity of the third sub-layer.

10. A display device, characterized in that: A display panel comprising any one of claims 1-9.

Images