Light-emitting panel and display device

Abstract

The present invention discloses a light-emitting panel and a display device. The light-emitting panel comprises: a substrate; a first reflective layer and a plurality of light-emitting elements located on the substrate; the first reflective layer comprises a first reflective portion and a plurality of hollow portions; the light-emitting element is located in the hollow portion, and there is a gap between the light-emitting element located in the hollow portion and the first reflective portion; at least one second reflective portion is located between the substrate and the first reflective layer; in a direction perpendicular to the plane where the substrate is located, the second reflective portion covers the gap. The embodiment of the present invention can effectively prevent light from leaking from the gap, improve the utilization rate of light, greatly reduce the loss rate of light, and thus help reduce the power consumption of the light-emitting panel.

Description

Technical Field

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

[0002] With the development of display technology, the requirements for the display functions of display devices are getting higher and higher. Light-emitting panels with good luminous brightness, high luminous efficiency, wide viewing angle range, and self-luminescence have become the focus of research and application in the current optoelectronic display field.

[0003] Existing light-emitting panels use light-emitting elements to emit light, and the light is emitted from the display light-emitting surface of the light-emitting panel. However, since the light is not propagated only toward the display light-emitting surface of the light-emitting panel, but in all directions, the brightness of the display light-emitting surface of the light-emitting panel is insufficient in some application scenarios; at the same time, when a higher light brightness is required, only a higher voltage or a larger current can be provided, which will be not conducive to the low power consumption of the light-emitting panel. Summary of the invention

[0004] The present invention provides a light-emitting panel and a display device, so as to improve the utilization rate of light, increase the display brightness of the light-emitting panel, and reduce the power consumption of the light-emitting panel.

[0005] According to one aspect of the present invention, there is provided a light emitting panel, comprising: a substrate;

[0006] A first reflective layer and a plurality of light-emitting elements are located on the base substrate; the first reflective layer includes a first reflective portion and a plurality of hollow portions; the light-emitting element is located in the hollow portion, and there is a gap between the light-emitting element located in the hollow portion and the first reflective portion;

[0007] At least one second reflective portion is located between the base substrate and the first reflective layer; in a direction perpendicular to the plane where the base substrate is located, the second reflective portion covers the gap.

[0008] According to another aspect of the present invention, there is provided a display device, comprising: the above-mentioned light-emitting panel.

[0009] The technical solution of the embodiment of the present invention is to arrange the light-emitting element in the hollow part of the first reflective layer so that the first reflective part of the first reflective layer surrounds the light-emitting element, and the first reflective part is used to reflect part of the light so that it can be reused; at the same time, a second reflective part is arranged between the first reflective layer and the base substrate, and the second reflective part at least covers the gap between the light-emitting element and the first reflective part, and the second reflective part can reflect the light leaked from the gap between the light-emitting element and the first reflective part, so that the part of the light can be reused. The embodiment of the present invention can reduce the loss rate of the light emitted by the light-emitting element and improve the utilization rate of the light emitted by the light-emitting element, so as to relatively improve the display luminous brightness of the light-emitting panel, and then improve the display luminous effect of the light-emitting panel; compared with the case of providing a higher display signal to the light-emitting element to improve the luminous brightness, when the light utilization rate of the light-emitting element is improved, it is not necessary to increase the higher display signal to make the light-emitting panel have the corresponding display luminous brightness, which is conducive to reducing the power consumption of the light-emitting panel.

[0010] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A schematic diagram of a top view structure of a light emitting panel in the related art;

[0013] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure of A'-A';

[0014] Figure 3 is a schematic diagram of a film structure of a light-emitting panel provided by an embodiment of the present invention;

[0015] Figure 4 is a schematic diagram of a top view structure of a light emitting panel provided by an embodiment of the present invention;

[0016] Figure 5 is a schematic diagram of a top view of another light-emitting panel provided by an embodiment of the present invention;

[0017] Figure 6 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0018] Figure 7 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0019] Figure 8 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0020] Fig. 9 is a schematic diagram of a top view of another light-emitting panel provided by an embodiment of the present invention;

[0021] Fig.10 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0022] Fig.11 is a schematic diagram of a top view of another light-emitting panel provided by an embodiment of the present invention;

[0023] Fig.12 is a schematic diagram of a top view of another light-emitting panel provided by an embodiment of the present invention;

[0024] Fig.13 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0025] Fig.14 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0026] Fig.15 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0027] Fig.16 is a circuit structure diagram of a driving circuit provided by an embodiment of the present invention;

[0028] Fig.17 is a circuit structure diagram of another driving circuit provided by an embodiment of the present invention;

[0029] Fig.18 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0030] Fig.19 is with Fig.17 A schematic diagram of a partial top view structure of a film layer of a corresponding light-emitting panel;

[0031] Fig. 20 yes Fig.19 A schematic diagram of an enlarged top view of the membrane layer structure in region B;

[0032] Fig.21 yes Fig. 20 A schematic diagram of a cross-sectional structure of the CC section;

[0033] Fig. 22 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0034] Fig.23 yes Fig.19 Another enlarged schematic diagram of the membrane layer structure viewed from above in region B;

[0035] Fig.24 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0036] Fig.25 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0037] Fig.26 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0038] Fig. 27 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0039] Fig.28 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0040] Fig.29 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0041] Fig.30 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0042] Fig.31 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0043] Fig.32 is a schematic diagram of a film layer structure of another light-emitting panel provided by an embodiment of the present invention;

[0044] Fig.33 It is a schematic diagram of the structure of another display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] As described in the background art, the utilization rate of the light emitted by the light-emitting elements in the light-emitting panel is low, and cannot meet the display and light-emitting requirements of the light-emitting panel with high brightness and low power consumption. Figure 1 1 is a schematic diagram of a top view structure of a light emitting panel in the related art. Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure of A'-A', combined with reference Figure 1 and Figure 2 The light-emitting panel includes a substrate 010, an ink layer 020 located on the substrate, an opening structure 021 is provided on the ink layer 020, and a light-emitting element 030 is located in the opening structure 021. Since the ink layer 020 has a certain reflective ability, the light emitted from the side of the light-emitting element 030 located in the opening structure 021 in the ink layer 020 can be reflected and reused to improve the utilization rate of the light.

[0048] However, in order to facilitate the arrangement of the light-emitting element 030, for example, when the light-emitting element 030 is a mini-LED or micro-LED, since the light-emitting element 030 needs to be bonded to a pad (not shown in the figure) on the substrate 010, if the ink material of the ink layer 020 is too close to the light-emitting element 030, it will affect the die bonding process when the light-emitting element 030 is bonded to the pad. In order to ensure the accuracy and stability of the bonding between the light-emitting element 030 and the pad, the size of the opening structure 021 is usually larger than the size of the light-emitting element 030 in the direction X parallel to the plane where the substrate 010 is located. The size of the ink layer 020 has a gap 022 between the light emitting element 030 and the reflective portion with a reflective function in the ink layer 020, so that light leaks out from the gap 022. Generally, the larger the gap 022, the more light leaks out, so that the light emitted by the light emitting element 030 cannot be efficiently utilized. When a higher display luminous brightness is required, it can only be achieved by providing a higher display luminous signal to the light emitting element 030. Because the higher the display luminous signal provided to the light emitting element 030, the greater the power consumption, which is not conducive to reducing the power consumption of the light emitting panel.

[0049] To solve the above technical problems, an embodiment of the present invention provides a light-emitting panel, which includes: a base substrate; a first reflective layer and a plurality of light-emitting elements located on the base substrate; the first reflective layer includes a first reflective portion and a plurality of hollow portions; the light-emitting element is located in the hollow portion, and there is a gap between the light-emitting element located in the hollow portion and the first reflective portion; at least one second reflective portion is located between the base substrate and the first reflective layer; in a direction perpendicular to the plane where the base substrate is located, the second reflective portion covers the gap.

[0050] By adopting the above technical solution, by arranging the light-emitting element in the hollow part of the first reflective layer, the first reflective part of the first reflective layer surrounds the light-emitting element, and the first reflective part is used to reflect part of the light, so that it is reused; at the same time, a second reflective part is arranged between the first reflective layer and the base substrate, and the second reflective part at least covers the gap position between the light-emitting element and the first reflective part, and the second reflective part can reflect the light leaked from the gap between the light-emitting element and the first reflective part, so that the part of the light is reused. The embodiment of the present invention can reduce the loss rate of the light emitted by the light-emitting element, improve the utilization rate of the light emitted by the light-emitting element, so as to relatively improve the display luminous brightness of the light-emitting panel, and then improve the display luminous effect of the light-emitting panel; compared with the case of providing a higher display signal to the light-emitting element to improve the luminous brightness, when the light utilization rate of the light-emitting element is improved, it is not necessary to increase a higher display signal to enable the light-emitting panel to have a corresponding display luminous brightness, thereby helping to reduce the power consumption of the light-emitting panel.

[0051] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Figure 3 is a schematic diagram of a film structure of a light-emitting panel provided by an embodiment of the present invention, Figure 4 is a schematic diagram of a top view structure of a light emitting panel provided by an embodiment of the present invention, combined with reference Figure 3 and Figure 4The light emitting panel 100 includes a base substrate 10, a first reflective layer 20 and a plurality of light emitting elements 30 located on the base substrate 10; the first reflective layer 20 includes a first reflective portion 21 and a plurality of hollow portions 22, and the light emitting elements 30 are located in the hollow portions 22. The first reflective layer 20 is a film layer with a certain reflective ability, so that when the light emitted by the light emitting element 30 located in the hollow portion 22 reaches the first reflective portion 21, the first reflective portion 21 can reflect the part of the light, so that the part of the light can be reused.

[0053] Understandably, Figure 3 The accompanying drawings are merely exemplary of the embodiments of the present invention. Figure 3 It is only exemplarily shown that the surface of the side of the light-emitting element 30 facing away from the base substrate 10 is higher than the surface of the side of the first reflective layer 20 facing away from the base substrate 10; in the embodiment of the present invention, the surface of the side of the light-emitting element facing away from the base substrate may be lower than the surface of the side of the first reflective layer facing away from the base substrate, or the surface of the side of the light-emitting element facing away from the base substrate is flush with the surface of the side of the first reflective layer facing away from the base substrate, and the embodiment of the present invention does not make any specific limitation on this.

[0054] Among them, Figure 4 As shown, the shape of the orthographic projection of the hollow structure 22 on the substrate 10 can be the same as the shape of the orthographic projection of the light emitting element 30 on the substrate 10, for example, both can be rectangular structures, or both can be regular or irregular shapes such as circles, ellipses, triangles, etc. Or, as Figure 5 As shown, the shape of the orthographic projection of the hollow structure 22 on the substrate 10 may also be different from the shape of the orthographic projection of the light emitting element 30 on the substrate 10. For example, the orthographic projection of the hollow structure on the substrate 10 is a rounded rectangle, circle, or ellipse, while the orthographic projection of the light emitting element on the substrate 10 is a rectangle, triangle, rhombus, etc. The embodiment of the present invention does not specifically limit this. For the convenience of description, unless otherwise specified, the embodiment of the present invention takes the shape of the orthographic projection of the hollow structure 22 on the substrate 10 being the same as the shape of the orthographic projection of the light emitting element 30 on the substrate 10 as an example to exemplarily illustrate the technical solution of the embodiment of the present invention.

[0055] In the embodiment of the present invention, in order to meet the design requirements of the light-emitting panel 100, a gap 201 is provided between the light-emitting element 30 located in the hollow portion 22 and the first reflective portion 21. At this time, part of the light emitted by the light-emitting element 30 and part of the light reflected by the first reflective portion 21 will be emitted from the gap 201 toward the side of the base substrate 10. Usually, the display light-emitting surface 1001 of the light-emitting panel 100 is the side of the light-emitting element 30 away from the base substrate 10, so that when part of the light is emitted from the gap 201 toward the side of the base substrate 10, the part of the light cannot reach the display light-emitting surface 1001 of the light-emitting panel 100, and cannot contribute to the display light-emitting brightness of the display light-emitting surface 1001 of the light-emitting panel 100, which is not conducive to improving the light utilization rate, and cannot meet the requirements of the light-emitting panel 100 with high display light-emitting brightness requirements, and is not conducive to power consumption reduction of the light-emitting panel 100.

[0056] Continue to combine references Figure 3 and Figure 4 At least one second reflecting portion 41 is arranged between the base substrate 10 and the first reflecting layer 20; in the direction Z perpendicular to the plane where the base substrate 10 is located, the second reflecting portion 41 covers the gap 201, so that when the light propagating from the gap 201 toward the side of the base substrate 10 reaches the second reflecting portion 41, the second reflecting portion 41 can reflect the part of the light, so that the reflected light of the part of the light can propagate toward the side away from the base substrate 10 and reach the display light-emitting surface 1001 of the light-emitting panel 100, so that the part of the light is reused, thereby reducing the loss rate of the light, improving the utilization rate of the light, meeting the display light-emitting requirements of the light-emitting panel 100 with high display light-emitting brightness, and further improving the display light-emitting effect of the light-emitting panel 100; at the same time, when the utilization rate of the light is improved, a smaller display light-emitting signal can be provided, which can meet the higher display light-emitting brightness requirements of the light-emitting panel 100, thereby helping to reduce the power consumption of the light-emitting panel 100.

[0057] Optionally, both the first reflective layer 20 and the second reflective portion 41 may have high reflective capabilities; illustratively, the first reflective layer 20 may include white ink. In this case, the first reflective layer 20 may be formed on the base substrate 10 around the light-emitting element 20 by spraying or printing, or, after coating or printing a whole layer of the first reflective layer 20, the first reflective layer 20 may be patterned to form corresponding hollow portions 22 and first reflective portions 21, so that the light-emitting element 30 may be disposed in the hollow portion 22 in the subsequent process to meet the display and light-emitting requirements of the light-emitting element 30.

[0058] It is understandable that the material of the second reflective portion 41 may be the same as or different from the material of the first reflective layer. In an optional embodiment, the material of the second reflective portion 41 may include a metal material with a high reflectivity such as silver and / or aluminum, so that the second reflective portion 41 can be manufactured on the same production line as the existing metal film layer in the light-emitting panel 100, which is conducive to simplifying the manufacturing process of the light-emitting panel 100 and reducing the manufacturing cost of the light-emitting panel 100.

[0059] In the embodiment of the present invention, the light emitting element 30 may include but is not limited to an organic light emitting diode (OLED), a micro light emitting diode (micro-LED), a mini light emitting diode (mini-LED), a light emitting diode (LED) lamp bead, etc. In some optional embodiments, the light emitting element 30 is preferably a mini-LED with a size between 50 μm and 200 μm, so that the light emitting panel 100 has a higher resolution.

[0060] It is understandable that the light emitting panel 100 can be a display panel that directly displays the corresponding image; it can also be used to provide a backlight source for other display modules (such as liquid crystal display modules, etc.), in which case the light emitting panel 100 is a component of the backlight module. The embodiment of the present invention does not specifically limit the function and type of the light emitting panel 100.

[0061] It should be noted that if Figure 3 As shown, the light-emitting elements 30 can be arranged in a one-to-one correspondence with the hollow portions 22, that is, a light-emitting element 30 is arranged in each hollow portion 22. At this time, the first reflecting portion 21 can not only reflect part of the light emitted by the light-emitting element 30, but also can be used to isolate two adjacent light-emitting elements 30 to prevent crosstalk between the light emitted by the two adjacent light-emitting elements 30.

[0062] In an optional embodiment, if Figure 6As shown, two or more light-emitting elements 30 may be arranged in each hollow portion 22, and the light-emitting colors of the light-emitting elements 30 in the same hollow portion 22 may be the same or different, and the embodiment of the present invention does not specifically limit this. At the same time, without considering the light crosstalk problem between the light emitted by two adjacent light-emitting elements 30, the corresponding light blocking structure may not be arranged in the gap 301 between the two adjacent light-emitting elements 30 in the same hollow portion 22; at this time, in order to improve the utilization rate of light, in the direction Z perpendicular to the plane where the base substrate 10 is located, the second reflective portion 41 can also cover the gap 301 between the two adjacent light-emitting elements 30 in the same hollow portion 22.

[0063] Or, if Figure 7 As shown, when the light crosstalk problem between two adjacent light emitting elements 30 located in the same hollow portion needs to be considered, a corresponding light blocking structure 302 can be filled in the gap between two adjacent light emitting elements 30 located in the same hollow portion 22, so that the light emitted by the light emitting element 30 cannot pass through the light blocking structure 302 to reach another light emitting element 30. The light blocking structure 30 may include a light absorbing material and / or a reflective material, which is not specifically limited in the embodiment of the present invention.

[0064] For ease of description, unless otherwise specified, the embodiments of the present invention are described in Figure 3 As shown, taking an example in which a light emitting element 30 is disposed in each hollow structure 22, the technical solution of the embodiment of the present invention is exemplarily described.

[0065] It is understandable that if Figure 3 As shown, in the direction Z perpendicular to the plane where the base substrate 10 is located, the second reflective portion 41 covering different gaps 201 can be an integrated structure, and the integrated structure can exist in a whole surface structure. Figure 8As shown, under the premise that the second reflecting portion 41 is a structure, a corresponding opening can be set in the second reflecting portion 41. In the direction Z perpendicular to the plane where the substrate 10 is located, the opening and the gap 201 do not overlap each other. At this time, compared with the second reflecting portion 41 in a whole surface, by setting the opening in the second reflecting portion 41, since there is no film material of the second reflecting portion 41 at the position of the opening, the pressure on the film layer below the second reflecting portion 41 at the position of the opening is small, or even no pressure. At this time, due to the pressure of the second reflecting portion 41, the stress generated at various positions of other film layers (such as the substrate) below the second reflecting portion 41 is small, that is, it is helpful to reduce the stress exerted by the second reflecting portion 41. At the same time, when the second reflecting portion 41 is made of metal or other conductive materials, compared with the case where the second reflecting portion 41 is a whole surface, an opening is set in the second reflecting portion 41, which can reduce the area of ​​the positive projection of the conductive structure in the second reflecting portion 41 on the base substrate 10, thereby reducing the static electricity generated in the process (production, assembly, testing, storage, transportation, etc.) of the light-emitting panel 100, and the amount of charge accumulated on the second reflecting portion 41, so that when the corresponding static electricity release path is formed, the influence of static electricity on the structure of each device in the light-emitting panel 100 can be reduced, which is beneficial to improve the production yield and service life of the light-emitting panel 100.

[0066] In an optional embodiment, in conjunction with reference Figure 4 and Figure 8 As shown, the light emitting panel 100 may include a plurality of second reflective portions 41 corresponding to the plurality of hollow portions 22 ; wherein two adjacent second reflective portions 41 are not connected to each other.

[0067] In this way, by making two adjacent second reflecting parts 41 unconnected to each other, each second reflecting part 41 exists between the base substrate 10 and the first reflecting part 20 in an independent block structure. At this time, the area between the two adjacent second reflecting parts 41 will not generate corresponding pressure on other film layers (such as the base substrate 10) below the second reflecting parts, which can help reduce the stress in other film layers below the film layer where the second reflecting part 41 is located; at the same time, because each second reflecting part 41 is independent of each other, the area of ​​the positive projection of each second reflecting part 41 on the base substrate 10 is relatively small, so that the amount of charge accumulated by each second reflecting part 41 due to static electricity is small, so that when the corresponding static electricity release path is formed, the influence of static electricity on each device structure in the light-emitting panel 100 can be reduced, which is beneficial to improve the production yield and service life of the light-emitting panel 100.

[0068] Exemplary, with reference to Figure 4 and Figure 8, each second reflective portion 41 may correspond one-to-one to each hollow portion 22 , that is, each hollow portion 22 corresponds to one second reflective portion 41 . At this time, in the direction Z perpendicular to the plane where the base substrate 10 is located, each hollow portion 22 overlaps with only one second reflective portion 41 .

[0069] Or, combined with reference Figure 8 and Fig. 9 Each hollow portion 22 may correspond to a plurality of second reflective portions 41. At this time, in a direction Z perpendicular to the plane where the base substrate 10 is located, each hollow portion 22 overlaps with a plurality of second reflective portions 41, and each reflective portion 41 overlapping with the same hollow portion 22 may be arranged around the light-emitting element 30 in the hollow portion.

[0070] In an optional embodiment, the plurality of hollow portions may also correspond to one second reflective portion. In this case, each reflective portion overlaps with the plurality of hollow portions in a direction perpendicular to the plane where the substrate is located.

[0071] The above is only an exemplary description of the correspondence between the hollow portion 22 and the second reflective portion 41. In the embodiment of the present invention, the correspondence between the hollow portion 22 and the second reflective portion includes but is not limited to the above content. For the convenience of description, unless otherwise specified, the embodiment of the present invention takes the one-to-one correspondence between each second reflective portion 41 and each hollow portion 22 as an example to exemplify the technical solution of the embodiment of the present invention.

[0072] It should be noted that Figure 4 and Figure 8 It is only shown by way of example that in the direction Z perpendicular to the plane of the base substrate 10, the second reflective portion 41 only covers the gap 201 and does not overlap with the light emitting element 30 and the first reflective portion 21; however, in the embodiment of the present invention, the structure of the second reflective portion 41 is not limited thereto.

[0073] Optionally, in a direction perpendicular to the plane where the substrate is located, the second reflective portion also overlaps with the light emitting elements and / or the first reflective portion on both sides of the gap.

[0074] For example, Fig.10 is a schematic diagram of a film structure of another light-emitting panel provided in an embodiment of the present invention. Fig.11 is a schematic diagram of a top view structure of another light emitting panel provided by an embodiment of the present invention, combined with reference Fig.10 and Fig.11As shown, taking the case where the second reflecting portion 21 overlaps with the light-emitting elements 30 and the first reflecting portion on both sides of the gap as an example, at this time, the second reflecting portion 41 can not only reflect the light propagating to the gap at the orthographic projection of the film layer where the second reflecting portion 41 is located, but also can reflect the light propagating to the gap 201 around the orthographic projection of the film layer where the second reflecting portion is located, and at the same time can also reflect at least part of the light emitted by the light-emitting element 30 toward the side of the base substrate 10, so that the light emitted by the light-emitting element 30 can be efficiently utilized, and the utilization rate of the light emitted by the light-emitting element 30 is improved, which is beneficial to improve the display brightness of the light-emitting panel 100, and then help to reduce the power consumption of the light-emitting panel 100.

[0075] The shape of the orthographic projection of the second reflective portion 41 on the base substrate 10 may be consistent with the shape of the orthographic projection of the light emitting element 30 and / or the opening structure 22 on the base substrate 10. For example, the shapes of the orthographic projections of the second reflective portion 41, the light emitting element 30 and the opening structure 22 on the base substrate 10 are all rectangular. In an optional embodiment, as Fig.12 As shown, the shape of the orthographic projection of the second reflecting portion 41 on the substrate 10 may also be different from the shape of the orthographic projection of the light-emitting element 30 and / or the opening structure 22 on the substrate 10. For example, the shape of the orthographic projection of the light-emitting element 30 and / or the opening structure 22 on the substrate 10 is rectangular, while the shape of the second reflecting portion 41 on the substrate 10 is circular, elliptical, etc. The embodiment of the present invention does not specifically limit this.

[0076] It should be noted that, in the direction Z perpendicular to the plane where the substrate is located, the second reflective portion 41 covers the gap 201. Fig.10 and Fig.11 It is only shown by way of example that the second reflective portion 41 also overlaps with the light emitting elements 30 and the first reflective portion on both sides of the gap; in an optional embodiment of the present invention, Fig.13 As shown, in the direction Z perpendicular to the plane where the substrate is located, the second reflective portion 41 may also overlap only with the light emitting element 30 on one side of the gap; or, as shown in FIG. Fig.14 As shown, in the direction Z perpendicular to the plane where the substrate is located, the second reflective portion 41 may also overlap with the first reflective portion 21 on one side of the gap only. The embodiment of the present invention does not specifically limit this. For the convenience of description, without special instructions, the embodiment of the present invention takes the example that in the direction Z perpendicular to the plane where the substrate is located, the second reflective portion 41 covers the gap 201, and the second reflective portion 41 also overlaps with the light-emitting element 30 and the first reflective portion on both sides of the gap, to exemplarily illustrate the technical solution of the embodiment of the present invention.

[0077] Optional, continue to refer to Fig.10, the height of the light emitting element 30 in a direction perpendicular to the plane where the base substrate 10 is located is H1, and the minimum width of the gap between the light emitting element 30 and the first reflective layer 20 along the first direction X is d1; the spacing between the surface of the second reflective portion 41 facing away from the base substrate 10 and the surface of the light emitting element 30 facing away from the base substrate 10 is H2; the first direction X is a direction parallel to the plane where the base substrate 10 is located; wherein, along the first direction X, the shortest distance d2 between the edge of the light emitting element 30 and the second reflective portion 41 is at least (d1 / H1)*H2.

[0078] Specifically, Fig.10 In the cross-section of the schematic diagram of the film layer shown, the diagonal line of the gap 201, the bottom edge of the gap 201 on the side close to the base substrate 10, and the side wall of the light-emitting element 30 form a first triangle; the extended line of the diagonal line of the gap 201, the upper surface of the second reflective portion 41 away from the base substrate 10, and the extended line of the side wall of the light-emitting element 30 form a second triangle; wherein, the intersection points of the extended line of the diagonal line of the gap 201 on the opposite sides of the light-emitting element 30 and the upper surface of the second reflective portion 41 are N and N' respectively, and the intersection point of the extended line of the side wall of the light-emitting element 30 and the upper surface of the second reflective portion 41 is M; at this time, it can be known from the triangle similarity principle that tanθ=d1 / H1=Lmn / H2, Lmn is the distance between M and N in the first direction X, and at this time it can be known that Lmn=(d1 / H1)*H2. Since the maximum coverage area of ​​the light leaked through the gap 201 after reaching the upper surface of the second reflecting part 41 is the N-N' area, the N-N' area can be considered as a circular area with the distance between N and N' as the diameter in the top view structural diagram of the light-emitting panel; to ensure that the second reflecting part 41 can fully reflect the light leaked from the gap 201, the shortest distance d2 between the light-emitting element 30 and the edge of the second reflecting part 41 can be at least Lmn, that is, d2 is greater than or equal to (d1 / H1)*H2, thereby maximizing the utilization rate of the light.

[0079] Optional, Fig.15 FIG. 1 is a schematic diagram of a film structure of another light-emitting panel provided in an embodiment of the present invention. Fig.15As shown, the light-emitting panel 100 further includes a driving circuit layer 50 located between the base substrate 10 and the light-emitting element 30; the driving circuit layer 50 includes a plurality of driving circuits 501; the driving circuits 501 are electrically connected to the light-emitting element 30, and are used to drive the light-emitting element 30 to emit light. When the light-emitting panel 100 is a display panel capable of directly displaying a corresponding image, different display light-emitting signals are provided to different light-emitting elements 30 or light-emitting elements 30 in different regions through different driving circuits 501, so that different light-emitting elements 30 or light-emitting elements 30 in different regions can have different display light-emitting brightness, and the light emitted by the light-emitting elements 30 of different colors and different display light-emitting brightness is transmitted to the display light-emitting surface 1001 of the light-emitting panel 100, so that the display light-emitting surface 1001 of the light-emitting panel 100 presents a colorful picture. When the light-emitting panel 100 is a component of a backlight module for providing backlight sources for other display modules, different display light-emitting signals are provided to different light-emitting elements 30 or light-emitting elements 30 in different areas through different driving circuits 501, and different light-emitting elements 30 or light-emitting elements 30 in different areas are controlled to present different display light-emitting brightness, so as to realize the local dimming function of the backlight module.

[0080] It should be noted that Fig.15 Only a part of the structure of the driving circuit 501 (transistor TM and storage capacitor Cst) is shown as an example, but the structure of the driving circuit in the embodiment of the present invention is not limited thereto, that is, the driving circuit 501 can be composed of any active devices and / or passive devices that meet the design requirements. Among them, active devices include transistors, etc., and passive devices include resistors, capacitors, inductors, etc.

[0081] In an exemplary embodiment, Fig.16 As shown, the driving circuit 501 can be a conventional 2T1C (including two transistors M and T, and a storage capacitor Cst) circuit, wherein the switching transistor M is turned on or off under the control of the scan signal Scan, and when the switching transistor M is turned on, it can transmit the data signal Data to the gate of the driving transistor T, so that the driving transistor T provides a corresponding display light-emitting signal to the light-emitting element according to the signal of its gate, and the display light-emitting signal is transmitted to the light-emitting element 30 through a path composed of power supplies PVDD and PVEE, thereby controlling the light-emitting element 30 to emit light.

[0082] In another exemplary embodiment, Fig.17As shown, the driving circuit 501 can also be a common 7T1C (including seven transistors M1, M2, M3, M4, M5, M6 and T, and a storage capacitor Cst) circuit, among which the transistors M1, M2, M3, M4, M5 and M6 are used as switch transistors, and each switch transistor transistor (M1, M2, M3, M4, M5 and M6) is turned on or off under the control of the corresponding scan signal (Scan1, Scan2, Scan3, Emit) to control the data signal Data, the initialization signal Ref, and the reset signal Ref' to provide the on and off of the corresponding transmission path; the transistor T is used as a driving transistor to convert the data signal Data into a display light-emitting signal that can drive the light-emitting element 30 to emit light. Among them, the reset signal Ref' can be the same as or different from the initialization signal Ref, and the embodiment of the present invention does not specifically limit this. It can be understood that when the driving circuit provided by the embodiment of the present invention is a 7T1C circuit, its driving timing can be similar to the driving timing of the 7T1C circuit known to those skilled in the art, and will not be repeated here.

[0083] Continue to refer Fig.15 The driving circuit layer 50 may include at least one metal layer (51, 52, 53), and the metal layer (51, 52, 53) includes at least part of the driving circuit 501, for example, it may include at least one of the gate of the transistor in the driving circuit, the source-drain electrode, the plate of the storage capacitor, the transmission signal line, the connection signal line, etc. In addition, the light-emitting panel may also include a second reflection layer 40 located between the base substrate 10 and the light-emitting element 30; the second reflection layer 40 includes at least part of the second reflection portion 41. The reflectivity of the second reflection layer may be greater than the reflectivity of the metal layer (51, 52, 53) in the driving circuit layer 50.

[0084] Specifically, since the second reflective layer 40 including at least part of the second reflective portion 41 should have a strong light reflection capability, so that the light reaching the second reflective portion 41 can be efficiently reflected; the metal layer (51, 52, 53) of the driving circuit layer 50 includes at least part of the driving circuit 501, which requires the metal layer (51, 52, 53) to have good conductivity to meet the transmission requirements of the signal in the corresponding structure of the metal layer (51, 52, 53) without requiring a high reflection capability, the reflectivity of the formed second reflective layer 40 can be greater than the reflectivity of the metal layer (51, 52, 53) in the driving circuit layer 50. In an optional embodiment, the material of the second reflective layer 40 can be the same as the material of part of the metal layer (51, 52, 53) in the driving circuit layer, and in this case, the upper surface of the second reflective layer 40 facing away from the base substrate 10 can be surface treated to achieve a higher reflectivity. Alternatively, the second reflective layer 40 may be made of a material having a relatively high reflectivity, such as silver or aluminum; and the metal layers (51, 52, 53) of the driving circuit 501 may be made of a material having a good electrical conductivity, such as a Ti-Al-Ti alloy material, etc. Under the premise that the second reflective layer 40 has a relatively high reflectivity and the metal layers (51, 52, 53) in the driving circuit layer 50 have a relatively strong electrical conductivity, the embodiment of the present invention does not specifically limit the materials of the second reflective layer 40 and the metal layers (51, 52, 53) in the driving circuit layer 50.

[0085] Optional, continue to refer to Fig.15 When the driving circuit 501 includes at least one transistor TM, the driving circuit layer 50 includes, in addition to the metal layers (51, 52, 53), a semiconductor layer 54, and the semiconductor layer 54 includes an active layer 541 of the transistor TM; at this time, if the second reflective layer 40 is located between the semiconductor layer 54 and the base substrate 10, that is, the second reflective layer 40 is located on a side of the semiconductor layer 54 close to the base substrate 10, then in a direction Z perpendicular to the plane where the base substrate 10 is located, the second reflective portion 41 and the active layer 541 do not overlap each other.

[0086] Specifically, the channel of the active layer 541 of the transistor TM forms photogenerated carriers, i.e., electron-hole pairs, when illuminated, and the electrons move toward the drain of the transistor TM, and the holes move toward the source of the transistor TM, thereby forming a leakage current, which affects the performance of the transistor TM, making it impossible for the transistor TM to accurately transmit the corresponding signal, thereby affecting the display brightness of the light-emitting element 30. At the same time, when the second reflective layer 40 is located between the semiconductor layer 54 and the base substrate 10, the second reflective portion 41 in the second reflective layer 40 reflects the light leaking from the gap 201, and the light reflected by the second reflective portion 41 needs to pass through the film layer where the active layer 541 of the transistor TM is located. In this way, by making the second reflecting portion 41 and the active layer 541 non-overlapping with each other in the direction Z perpendicular to the plane where the base substrate 10 is located, it is possible to improve or avoid the problem that the light reflected by the second reflecting portion 41 reaches the channel of the transistor TM, thereby increasing the leakage current of the transistor TM and affecting the performance of the transistor TM, and improve the accuracy of the signal transmitted by the transistor TM in the driving circuit 501, thereby improving the display light-emitting accuracy of the light-emitting element 30, and further improving the display light-emitting effect of the light-emitting panel 100.

[0087] Optional, continue to refer to Fig.15 When the light emitting element 30 is a mini-LED or micro-LED, the light emitting panel 100 should also include a connection electrode 61 bonded to the electrode of the light emitting element 30, and the connection electrode 61 can be located between the light emitting element 30 and the first metal layer 51, so that the light emitting element 30 is electrically connected to the signal line 600 through the connection electrode 61. The connection electrode 61 and the signal line 600 are located in the same metal layer 60.

[0088] In addition, continue to refer to Fig.15 The light-emitting panel 100 should also include an insulating layer (14, 15) located between any two adjacent metal layers (51, 52, 53), an insulating layer located between the semiconductor layer 54 and the corresponding metal layer (52), insulating layers 11 and 12 located between the first reflective layer 40 and the corresponding film layer in the driving circuit layer 50, and an insulating layer 16 covering the various device structures of the driving circuit 501, etc.; wherein the insulating layer 16 can be a film layer that can fill the uneven structure caused by the patterning of the various device structures in the driving circuit 501, or the insulating layer 16 can also be a film layer similar to other insulating layers located between any two metal layers, such as a silicon oxide insulating layer, a silicon nitride insulating layer, etc., and the embodiment of the present invention does not specifically limit this. At the same time, a corresponding insulating layer can also be provided on the side of the metal layer 60 away from the base substrate 10 to protect the metal layer 60, or the insulating layer on the side of the metal layer 60 away from the base substrate 10 can also be omitted and directly replaced by the first reflective layer 20, so as to achieve the purpose of simplifying the film layer and saving the process.

[0089] It should be noted that Fig.15 The drawings are merely exemplary drawings of the light emitting panel provided in the embodiments of the present invention. Fig.15 In the embodiment, the connection electrode 61 needs to be connected to the signal line 600 arranged on the same layer, and then the signal line 600 is electrically connected to the driving circuit 501 through the corresponding via hole; in the embodiment of the present invention, the film layer arrangement of the light-emitting panel is not limited to this. It can be understood that, Fig.15 The diagram shows the film structure. Due to the location of the film cross section, Fig.15 The connection electrode 61 and the signal line 600 are shown as being disconnected from each other, but in the embodiment of the present invention, the connection electrode 61 and the signal line 600 are electrically connected to each other.

[0090] For example, Fig.18 is a schematic diagram of a film structure of another light-emitting panel provided in an embodiment of the present invention. Fig.18 Zhongyu Fig.15 For similarities, please refer to the above Fig.15 The description of Fig.18 and Fig.15 The differences are exemplarily described. Fig.18 As shown, a corresponding connecting signal line 62 is formed in the metal layer 51 of the driving circuit layer 50, so that the connecting electrode 61 is electrically connected to the driving circuit 501 through the connecting signal line 62; at this time, a corresponding opening structure can be formed in the insulating layer 16 to expose part of the connecting signal line 62, so that the connecting electrode 61 can directly contact the connecting signal line 62, so that after the electrode of the light-emitting element 30 is bonded to the connecting electrode 61, the electrical connection between the light-emitting element 30 and the driving circuit 501 can be achieved.

[0091] For ease of description, unless otherwise specified, the embodiments of the present invention are described in Fig.18 Taking the schematic diagram of the film layer structure of the light-emitting panel as an example, the technical solution of the embodiment of the present invention is exemplarily described.

[0092] It is understandable that the driving circuit layer may include one or more metal layers, which may be designed according to actual needs, and the embodiments of the present invention do not specifically limit this. For ease of description, the embodiments of the present invention take the driving circuit layer including multiple metal layers as an example to exemplify the technical solutions of the embodiments of the present invention.

[0093] Optional, continue to refer to Fig.18 , at least one metal layer ( 51 , 52 , 53 ) may include a first metal layer; in this case, the second reflective layer 40 may be located between the first metal layer ( 51 , 52 or 53 ) and the base substrate 10 .

[0094] Specifically, the first metal layer may be a metal layer 51 including at least one of the source and drain electrodes of a transistor, a data signal line, a power signal line, and a connection signal line, etc.; wherein the data signal line is used to transmit the data signal Data, the power signal line is used to transmit the power signal PVDD and / or PVEE, and the connection signal line is used to connect the transistors, storage capacitors, etc. in the driving circuit. Alternatively, the first metal layer may be a metal layer 52 including at least one of the gate electrode of a transistor, a scan signal line, etc.; wherein the scan signal line is used to transmit the scan signal Scan (Scan1, Scan2, Scan3). Alternatively, the first metal layer may also be a metal layer 53 including at least one of the plates of the storage capacitor Cst, a reset signal line, and an initialization signal line, etc.; wherein the reset signal line is used to transmit the reset signal Ref', and the initialization signal line is used to transmit the initialization signal Ref. The embodiment of the present invention does not specifically limit the specific structure provided in the first metal layer.

[0095] In an optional embodiment, the first metal layer may include a signal line; the signal line is electrically connected to the light emitting element 30; in a direction Z perpendicular to the plane where the base substrate 10 is located, the signal line overlaps with the second reflective portion 41 located in the second reflective layer 40.

[0096] For example, taking the driving circuit 501 as a 7T1C circuit, Fig.19 is with Fig.17 A schematic diagram of a partial top view of the film layer of a corresponding light-emitting panel, combined with reference Fig.17 , Fig.18 and Fig.19 When the first metal layer is a metal layer 51 including source and drain electrodes of a transistor, the two electrodes (anode and cathode) of the light-emitting element 30 need to receive different signals respectively to drive the light-emitting element 30 to emit light, so that the anode of the light-emitting element 30 needs to be electrically connected to the driving circuit 501 through the corresponding signal line 600 (connection signal line 62), and the cathode of the light-emitting element 30 also needs to receive the corresponding power signal PVEE through the corresponding signal line 600 (power signal line 63). At this time, the signal line 600 needs to cross the area of ​​the positive projection of the gap 201 on the first metal layer 51, so that in the direction perpendicular to the plane where the base substrate 10 is located, the signal line 600 has a certain overlap with the second reflective portion 41 located in the second reflective layer 40.

[0097] Optional, Fig. 20 yes Fig.19 A schematic diagram of an enlarged top view of the membrane layer structure in area B. Fig.21 yes Fig. 20 A schematic diagram of the cross-section structure of the CC section, combined with reference Fig.19 , Fig. 20 and Fig.21The signal line 600 ( 62 and 63 ) includes at least one light-through hole 511 ; in a direction Z perpendicular to the plane where the base substrate 10 is located, the light-through hole 511 overlaps with the second reflective portion 41 located in the second reflective layer 40 .

[0098] Specifically, since the second reflective layer 40 with a higher emissivity is located between the first metal layer 51 and the base substrate 10, and the reflectivity and transmittance of the first metal layer 51 are both relatively small, part of the signal line 600 in the first metal layer 51 will block part of the light from propagating toward the side of the base substrate 10, and block part of the light reflected by the second reflective portion 41 of the second reflective layer 40; at the same time, the first metal layer 51 cannot efficiently reflect the light, thereby affecting the utilization rate of the light; at this time, a corresponding light-through hole 511 can be set on the signal line 600 overlapping with the second reflective portion 41 of the second reflective layer 40 in the first metal layer 51, so that the light propagating toward the side of the base substrate 10 passes through the light-through hole 511 and reaches the second reflective portion 41 of the second reflective layer 40, and is efficiently reflected by the second reflective portion 41, and the light reflected by the second reflective portion 41 can also pass through the light-through hole 511 to reach the display light-emitting surface 1001, thereby improving the utilization rate of the light, which is beneficial to improving the display light brightness of the light-emitting panel 100 and reducing the power consumption of the light-emitting panel 100.

[0099] For example, Fig. 22 As shown, there is a gap 2011 between the light emitting element 3001 located in the opening structure 221 and the first reflective portion 21 , a gap 2012 between the light emitting element 3002 located in the opening structure 222 and the first reflective portion 21 , and a gap 2013 between the light emitting element 3003 located in the opening structure 223 and the first reflective portion 21 . Taking the reflection of the second reflecting part 41 corresponding to the light-emitting element 3001 located in the opening structure 221 as an example, when the light-through hole and the second reflecting part meet the above conditions, the light L1 entering the gap at the left extreme position of the light-emitting element 3001 passes through the gap 2011 and the corresponding light-through hole to reach the second reflecting part 41, and then the reflected light L2 reflected by the second reflecting part 41 can be emitted from the gap 2012 to reach the display light-emitting surface of the light-emitting panel 100; the light L3 entering the gap at the right extreme position of the light-emitting element 3001 passes through the gap 2011 and the corresponding light-through hole to reach the second reflecting part 41, and then the reflected light L4 reflected by the second reflecting part 41 can be emitted from the gap 2013 to reach the display light-emitting surface of the light-emitting panel 100; and a part of the light L5 passing through the gap 2011 and the corresponding light-through hole to reach the second reflecting part 41, the reflected light L4 reflected by the second reflecting part 41 can be emitted from the gap 2011 again to reach the display light-emitting surface of the light-emitting panel 100. In this way, the light passing hole and the second reflecting portion satisfy the above conditions, which can significantly improve the utilization rate of light.

[0100] It can be understood that, without considering the transmission impedance of the signal line 600, the larger the overlapping area between the light hole 511 and the second reflective portion 41 in the direction perpendicular to the plane where the substrate 10 is located, the more conducive to improving the utilization rate of light, or the larger the size of the light hole 511 in the direction X parallel to the plane where the substrate 10 is located, the more conducive to improving the utilization rate of light. However, the size of the light hole 511 is usually not unlimited. The X direction here can be the direction of the long side extension of the signal line 600 overlapping the second reflective portion 41, which can be the row direction of the array-arranged light-emitting elements 30, or the column direction of the array-arranged light-emitting elements 30, which is not specifically limited in the embodiment of the present invention.

[0101] In an optional embodiment, in conjunction with reference Fig. 20 and Fig.21 , in the direction perpendicular to the plane where the base substrate 10 is located, the connection electrode 61 overlaps with the signal line 600; along the first direction X, the shortest distance between the connection electrode 61 and the light-through hole 511 is d3, and the shortest distance between the connection electrode 61 and the edge of the signal line 600 (for example, the power signal line 63) is d4; wherein d3≥d4; the first direction X is a direction parallel to the plane where the base substrate 10 is located. In this way, on the premise of ensuring that the light-through hole 511 has a sufficiently large size in the first direction X, it is also possible to ensure that the connection electrode 61 and the signal line 63 have sufficient contact area, thereby preventing the connection electrode 61 and the signal line 63 from being virtually connected, and failing to accurately transmit the corresponding signal to the connection electrode 61, resulting in the phenomenon of abnormal light emission of the light-emitting element 30.

[0102] Optional, continue to combine references Fig. 20 and Fig.21 , the distance between the side surface of the light-emitting element 30 facing away from the substrate 10 and the side surface of the first reflective layer 20 close to the substrate 10 is h1; the distance between the side surface of the light-emitting element 30 facing away from the substrate 10 and the side surface of the first metal layer 51 facing away from the substrate 10 is h2; in the connecting electrode 61 and the light-emitting element 30 electrically connected to each other, the distance between the side edge of the connecting electrode 61 close to the first reflective portion 21 and the side edge of the light-emitting element 30 close to the first reflective portion 21 along the first direction X is d5; the minimum width of the gap 201 between the light-emitting element 30 and the first reflective layer 20 along the first direction X is d1; along the first direction, the length d6 of the light-through hole 511 ranges from: d6≥d5-d3+(d1 / h1)*h2.

[0103] Specifically, in the cross-section of the CC section, based on the triangle similarity principle, it can be known that: tanβ=d1 / h1=d7 / h2, that is, d7=(d1 / h1)*h2, d7 is the minimum dimension extending from the side of the light-emitting element 30 along the first direction X toward the side away from the light-emitting element 30 to the edge of the light-through hole 511; in addition, the dimension of the light-through hole 511 in the first direction X should also include the dimension extending from one side of the light-emitting element 30 along the first direction X toward the side of the connecting electrode 61, that is, d5-d3; in this way, the minimum dimension of the light-through hole 511 in the first direction X should be d5-d3+(d1 / h1)*h2, and only when the dimension d6 of the light-through hole 511 in the first direction X is greater than or equal to d5-d3+(d1 / h1)*h2, can enough light pass through the light-through hole 511 to reach the second reflecting portion 41 located on the side of the first metal layer 51 close to the base substrate 10, thereby effectively improving the utilization rate of light.

[0104] It should be noted that the above only takes the example of providing one light-through hole 511 on the signal line 600 to exemplify the technical solution of the embodiment of the present invention. In an optional embodiment of the present invention, Fig.23 As shown, a plurality of light-through holes 511 may be provided on the signal line 600, and the plurality of light-through holes 511 are sequentially arranged at intervals along the second direction Y; the second direction Y is a direction parallel to the base substrate 100. At this time, the signal line 600 retained between two adjacent light-through holes can be used to transmit signals, so that the signal line 600 has a smaller impedance, and the amount of loss of the signal transmitted by the signal line 600 is reduced, that is, the accuracy and uniformity of the signal transmission signal of the signal line 600 are improved, so that the display and luminous effect of the light-emitting panel can be improved while meeting the light transmission requirements and improving the utilization rate of light. Among them, the second direction Y can intersect with the first direction X, or can be parallel to the first direction X, and the embodiment of the present invention does not specifically limit this.

[0105] In an optional embodiment, continue to refer to Fig.23 , the width w of the light-through hole 511 in the second direction Y is ≥ 1 μm. This allows the light-through hole 511 to have a larger width and meet the light transmission requirements while meeting the process preparation conditions.

[0106] When the second direction Y intersects the first direction X, the first direction X may be the length direction of the light through hole 511, and the second direction Y may be the width direction of the light through hole 511. The second direction Y and the first direction X are determined according to the overlap of the signal line 600 and the second reflective portion 41, and do not refer to a determined direction.

[0107] It can be understood that the above only takes the orthographic projection of the light-through hole 511 on the base substrate 10 as a rectangle as an example to exemplarily illustrate the technical solution of the embodiment of the present invention, and in the embodiment of the present invention, the shape of the orthographic projection of the light-through hole 511 on the base substrate 10 can also be a circle, an ellipse, a triangle, and other regular or irregular shapes, etc., and the embodiment of the present invention does not make specific limitations on this.

[0108] It should be noted that the above-mentioned structure in which the first metal layer only includes the driving circuit is used as an example to exemplarily illustrate the technical solution of the embodiment of the present invention. In the embodiment of the present invention, the first metal layer may also include part of the second reflective portion.

[0109] Optional, Fig.24 FIG. 1 is a schematic diagram of a film structure of another light-emitting panel provided in an embodiment of the present invention. Fig.24 As shown, the first metal layer 51 may include a portion of the second reflective portion 412 . At this time, in a direction perpendicular to the plane where the base substrate 10 is located, the second reflective portion 412 located in the first metal layer 51 and the second reflective portion 411 located in the second reflective layer 40 do not overlap each other.

[0110] Specifically, since the reflectivity of the second reflective layer 40 is greater than the reflectivity of the first metal layer 51, in a direction perpendicular to the plane where the base substrate 10 is located, when the second reflective portion 412 located in the first metal layer 51 and the second reflective portion 411 located in the second reflective layer 40 do not overlap with each other, most of the light leaking from the gap 201 can reach the second reflective portion 411 of the second reflective layer 40, so that the second reflective portion 411 of the second reflective layer 40 can fully reflect the light, and the second reflective portion 412 of the first metal layer 51 can reflect other light that cannot reach the second reflective portion 411, so as to have a higher light utilization rate and meet the display light-emitting requirements of the light-emitting panel 100 with high display requirements.

[0111] It should be noted that the above-mentioned technical solution of the embodiment of the present invention is exemplarily described by taking the second reflective layer 40 being located between the base substrate and the driving circuit layer 50 as an example. In the embodiment of the present invention, when the driving circuit layer 50 includes multiple film layers, the second reflective layer 40 can also be located between any two adjacent film layers in the driving circuit layer 50.

[0112] Optional, Fig.25 FIG. 1 is a schematic diagram of a film structure of another light-emitting panel provided in an embodiment of the present invention. Fig.25As shown, at least one metal layer may further include a second metal layer 52 (or 53) insulated from the first metal layer 51; in this case, the second reflective layer 40 may be located between the first metal layer 51 and the second metal layer 52 (or 53); accordingly, the second metal layer 52 (or 53) may also include a portion of a second reflective portion 413 (or 414), and in a direction Z perpendicular to the plane where the substrate 10 is located, at least a portion of the second reflective portion 413 (or 414) located in the second metal layer 52 (or 53) overlaps with the second reflective portion 411 located in the second reflective layer 40, and the second reflective portion 412 located in the first metal layer 51 overlaps with the second reflective portion 413 (or 414) located in the second metal layer 52 (or 53).

[0113] Specifically, since the second reflective layer 40 with a higher reflectivity is located on the side of the second metal layer 52 (or 53) away from the base substrate, the second reflective portion 413 (or 414) in the second metal layer 52 (or 53) will not block the second reflective portion 411 in the second reflective layer 40. At this time, in the direction Z perpendicular to the plane where the base substrate 10 is located, at least a portion of the second reflective portion 413 (or 414) located in the second metal layer 52 (or 53) overlaps with the second reflective portion 411 located in the second reflective layer 40, so that the second reflective portion 413 (or 414) of the second metal layer 52 (or 53) can be overlapped. The reflecting portion 413 (or 414) reflects part of the light passing through the second reflecting layer 40, thereby having a higher light utilization rate; at the same time, in the direction Z perpendicular to the plane of the base substrate 10, the second reflecting portion 413 (or 414) in the second metal layer 52 (or 53) can also overlap with the second reflecting portion 412 located in the first metal layer 51, so that the light at the gap between the second reflecting portion 411 located in the second reflecting layer 40 and the second reflecting portion 412 located in the first metal layer 51 in the first direction X is reflected to further improve the light utilization rate.

[0114] It should be noted that, in the above, only the first metal layer is used as the metal layer 51 farthest from the base substrate 10 in the driving circuit layer 50. In another embodiment of the present invention, Fig.26 As shown, the first metal layer can also be the metal layer 53 centered in the driving circuit layer 50. In this case, the second metal layer is the metal layer 52 located on the side of the first metal layer 53 close to the base substrate 10. The principle is similar to that of the first metal layer being the metal layer 51 farthest from the base substrate 10 in the driving circuit layer 50. The similarities can be referred to the above description of the first metal layer being the metal layer 51 farthest from the base substrate 10 in the driving circuit layer 50, which will not be repeated here.

[0115] Optional, such as Fig. 27As shown, when the second reflective layer 40 is a metal reflective layer, the driving circuit layer 50 may include the second reflective layer 40; at this time, the second reflective layer 40 and the metal layer (51 or 52) are insulated from each other, and the second reflective layer 40 may also include a partial structure of the driving circuit 501, for example, the second reflective layer 40 may also include the plate C1 of the storage capacitor in the driving circuit 501, provided that the second reflective layer 40 includes at least a portion of the second reflective portion 41. In this way, by reasonably selecting the material of the second reflective layer 40, the second reflective layer 40 has both conductivity and reflectivity, so that the second reflective layer 40 can be reused as the metal layer 53 in the driving circuit 501, so as to simplify the film structure of the light-emitting panel 100, simplify the preparation process of the light-emitting panel 100, reduce the preparation cost of the light-emitting panel 100, improve the production efficiency of the light-emitting panel 100, and also facilitate the lightness and thinness of the light-emitting panel 100.

[0116] It should be noted that Fig. 27 , only exemplarily shows that the second reflective layer 40 is reused as a metal layer 53 including a plate for setting a storage capacitor in the driving circuit 501. In the embodiment of the present invention, when the second reflective layer 40 also includes a partial structure of the driving circuit 501, the second reflective layer 40 can also be reused as a film layer including other structures in the driving circuit 501. Fig.28 As shown, the second reflective layer 40 can also be reused as a metal layer 52 including a gate 542 of a transistor in the driving circuit 501; or Fig.29 As shown, the second reflective layer 40 can also be reused as the metal layer 51 including the source and drain electrodes 542 of the transistor in the driving circuit 501. This embodiment of the present invention does not specifically limit this.

[0117] In an optional embodiment of the present invention, Fig.30 As shown, the second reflective layer 40 can also be located between the driving circuit layer 50 and the light emitting element 30. In this case, the second reflective portion 411 in the second reflective layer 40 will not be blocked by the film layer in the driving circuit layer 50, so that the light leaking from the gap to the second reflective layer 40 can be efficiently reflected.

[0118] Optional, continue to refer to Fig.30When the second reflective layer 40 can also be located between the driving circuit layer 50 and the light emitting element 30, the metal layer 51 (52, 53) of the driving circuit 50 can also include a portion of the second reflective portion 412 (413, 414), and in the direction Z perpendicular to the plane where the base substrate 10 is located, the second reflective portion 412 (413, 414) located in the metal layer 51 (52, 53) overlaps with the second reflective portion 411 located in the second reflective layer 40. In this way, the second reflective portion 412 (413, 414) located in the metal layer 51 (52, 53) can reflect the light passing through the second reflective layer 40 to further improve the utilization rate of the light.

[0119] In an optional embodiment, if Fig.31 As shown, the light emitting panel 100 may further include a reflective glass layer 70 ; the reflective glass layer 70 may also include at least a portion of the second reflective portion 41 .

[0120] The reflective glass layer 70 generally has good insulation and will not accumulate electrostatic charges, and the reflective glass layer 70 may have a relatively low density, so that the stress applied by the reflective glass layer 70 to the film layer below it (e.g., the base substrate 10) is relatively small. In this case, the reflective glass layer 70 may be a whole-surface structure. Alternatively, in an optional embodiment, the reflective glass layer 70 may also be a block structure, so as to further reduce the stress applied to the film layer below it (e.g., the base substrate 10) while meeting the requirements for light reflection.

[0121] For example, Fig.31 As shown, the reflective glass layer 70 may be a glass layer having a reflective enhancement film 701 coated on the side facing away from the substrate 10. Fig.32 As shown, the reflective glass layer 70 may be a glass layer having a reflective structure 702 disposed on a surface of a side facing away from the base substrate 10 , which is not specifically limited in the embodiment of the present invention.

[0122] Understandably, Fig.31 and 32 The reflective glass layer 70 is only exemplarily shown to be located between the base substrate 10 and the driving circuit layer 50. In the embodiment of the present invention, the reflective glass layer 70 can be arranged in the same manner as the second reflective layer, which is not specifically limited in the embodiment of the present invention. For the similarities, please refer to the above description of the second reflective layer, which will not be repeated here.

[0123] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes the light-emitting panel provided by the embodiment of the present invention. Therefore, the display device provided by the embodiment of the present invention has the technical characteristics of the light-emitting panel provided by the embodiment of the present invention, and can achieve the beneficial effects of the light-emitting panel provided by the embodiment of the present invention. The similarities can be referred to the above description of the light-emitting panel provided by the embodiment of the present invention, and will not be repeated here.

[0124] For example, Fig.33 is a schematic diagram of the structure of a display device provided by an embodiment of the present invention, such as Fig.33 The display device 200 includes a light-emitting panel 100. The display device 200 can be a mobile phone, a tablet computer, a smart wearable device (for example, a smart watch), and other display devices known to those skilled in the art, which are not limited in this embodiment of the present invention.

[0125] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A light-emitting panel, characterized in that: include: substrate substrate; A first reflective layer and a plurality of light-emitting elements are located on the base substrate; the first reflective layer comprises a first reflective portion and a plurality of hollow portions; The light emitting element is located in the hollow portion, and there is a gap between the light emitting element located in the hollow portion and the first reflecting portion; at least one second reflective portion located between the base substrate and the first reflective layer; in a direction perpendicular to the plane where the base substrate is located, the second reflective portion covers the gap; A driving circuit layer located between the base substrate and the light emitting element; the driving circuit layer includes a plurality of driving circuits; the driving circuit is electrically connected to the light emitting element and is used to drive the light emitting element to emit light; The light emitting panel further comprises a second reflective layer located between the base substrate and the light emitting element; The second reflective layer includes at least a portion of the second reflective portion; The driving circuit layer includes at least one metal layer; the metal layer includes at least a portion of the driving circuit; The reflectivity of the second reflective layer is greater than the reflectivity of the metal layer.

2. The light emitting panel according to claim 1, characterized in that: In a direction perpendicular to the plane where the base substrate is located, the second reflective portion also overlaps with the light emitting elements and / or the first reflective portion on both sides of the gap.

3. The light emitting panel according to claim 1, characterized in that: It comprises a plurality of second reflecting parts corresponding to the plurality of hollow parts; wherein two adjacent second reflecting parts are not connected to each other.

4. The light emitting panel according to claim 3, characterized in that: The height of the light-emitting element in a direction perpendicular to the plane where the substrate is located is H1, and the minimum width of the gap between the light-emitting element and the first reflective layer along the first direction is d1; the distance between the surface of the second reflective portion facing away from the substrate and the surface of the light-emitting element facing away from the substrate is H2; the first direction is a direction parallel to the plane where the substrate is located; Wherein, along the first direction, the shortest distance d2 between the light emitting element and the edge of the second reflecting portion is at least (d1 / H1)*H2.

5. The light emitting panel according to claim 1, characterized in that: At least one of the metal layers includes a first metal layer; The second reflective layer is located between the first metal layer and the base substrate.

6. The light emitting panel according to claim 5, characterized in that: The first metal layer also includes a portion of the second reflective portion; In a direction perpendicular to a plane where the base substrate is located, the second reflective portion located on the first metal layer and the second reflective portion located on the second reflective layer do not overlap each other.

7. The light emitting panel according to claim 6, characterized in that: At least one of the metal layers further comprises a second metal layer which is insulated from the first metal layer; the second reflective layer is located between the first metal layer and the second metal layer; The second metal layer includes a portion of the second reflective portion; In a direction perpendicular to the plane of the substrate, at least part of the second reflective portion located in the second metal layer overlaps with the second reflective portion located in the second reflective layer, and the second reflective portion located in the first metal layer overlaps with the second reflective portion located in the second metal layer.

8. The light emitting panel according to claim 5, characterized in that: The first metal layer includes a signal line; the signal line is electrically connected to the light emitting element; In a direction perpendicular to a plane where the base substrate is located, the signal line overlaps with the second reflective portion located on the second reflective layer.

9. The light emitting panel according to claim 8, characterized in that: The signal line includes at least one light-through hole; In a direction perpendicular to a plane where the base substrate is located, the light through hole overlaps with the second reflective portion located on the second reflective layer.

10. The light emitting panel according to claim 9, characterized in that: Also includes: a connecting electrode located between the light emitting element and the first metal layer; The light emitting element is electrically connected to the signal line via the connection electrode.

11. The light emitting panel according to claim 10, characterized in that: In a direction perpendicular to the plane where the substrate is located, the connection electrode overlaps with the signal line; Along the first direction, the shortest distance between the connecting electrode and the light-through hole is d3, and the shortest distance between the connecting electrode and the edge of the signal line is d4; wherein d3≥d4; and the first direction is a direction parallel to the plane where the substrate is located.

12. The light emitting panel according to claim 11, characterized in that: The distance between the surface of the light emitting element facing away from the substrate and the surface of the first reflective layer close to the substrate is h1; the distance between the surface of the light emitting element facing away from the substrate and the surface of the first metal layer facing away from the substrate is h2; In the connecting electrode and the light-emitting element that are electrically connected to each other, the distance between the side of the connecting electrode close to the first reflective portion and the side of the light-emitting element close to the first reflective portion along the first direction is d5; the minimum width of the gap between the light-emitting element and the first reflective layer along the first direction is d1; Along the first direction, the length d6 of the light-through hole has a value range of: d6≥d5-d3+(d1 / h1)*h2.

13. The light emitting panel according to claim 9, characterized in that: When the signal line includes a plurality of the light-through holes, the plurality of light-through holes are sequentially spaced apart along the second direction; The second direction is a direction parallel to the base substrate.

14. The light emitting panel according to claim 13, characterized in that: The width w of the light-through hole in the second direction is ≥1 μm.

15. The light emitting panel according to claim 1, characterized in that: The driving circuit includes at least one transistor; The driving circuit layer further comprises a semiconductor layer; the semiconductor layer comprises an active layer of the transistor; The second reflective layer is located between the semiconductor layer and the substrate; In a direction perpendicular to the plane where the base substrate is located, the second reflective portion and the active layer do not overlap each other.

16. The light emitting panel according to claim 1, characterized in that: The second reflective layer is a metal reflective layer; the driving circuit layer includes the second reflective layer; the second reflective layer and the metal layer are insulated from each other; and the second reflective layer also includes a partial structure of the driving circuit.

17. The light emitting panel according to claim 1, characterized in that: The second reflective layer is located between the driving circuit layer and the light emitting element.

18. The light emitting panel according to claim 17, characterized in that: The metal layer also includes a portion of the second reflective portion; In a direction perpendicular to a plane where the base substrate is located, the second reflective portion located on the metal layer overlaps with the second reflective portion located on the second reflective layer.

19. The light emitting panel according to claim 1, characterized in that: Also includes: Reflective glass layer; The reflective glass layer includes at least a portion of the second reflective portion.

20. The light emitting panel according to claim 1, characterized in that: The material of the second reflective portion includes silver and / or aluminum.

21. The light emitting panel according to claim 1, characterized in that: The first reflective layer includes white ink.

22. A display device, characterized in that: include: A light-emitting panel as claimed in any one of claims 1 to 21.

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