Display panel and display device

Abstract

The embodiment of the present invention discloses a display panel and a display device. The display panel includes: a driving substrate and a light-emitting element located on one side of the driving substrate; the light-emitting element includes a light-emitting body, a first electrode and a second electrode, the first electrode and the second electrode are both located on the side of the light-emitting body facing the driving substrate, the first electrode includes a first surface facing the driving substrate, the second electrode includes a second surface facing the driving substrate, the first surface is located on the side of the second surface close to the driving substrate; the driving substrate includes a groove portion and / or a supporting portion, the first electrode is arranged in the groove portion, and the second electrode is in contact with the supporting portion; the driving substrate also includes a first reflecting portion, and along the thickness direction of the display panel, the first reflecting portion overlaps with the light-emitting body between the first electrode and the second electrode. The technical solution provided by the embodiment of the present invention can improve the light output uniformity and light output efficiency of the display panel.

Description

Technical Field

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

[0002] With the rapid growth of the lighting and display industries in recent years, market demand for LEDs has also grown. With continuous technological breakthroughs in the industry, end-users are demanding higher and higher standards for LEDs, particularly in terms of package power, luminous efficacy, and reliability. Against this backdrop, flip-chip LED products are expanding in scale and impacting the mid- to high-end market.

[0003] However, there is a height difference between the two electrodes of the existing flip-chip structure LED, which leads to deviations in the light emission and light output angle after the LEDs are bound, affecting the uniformity and light output efficiency. In addition, the light emitted downward from the bottom of the LED is difficult to utilize, resulting in light loss and low light output efficiency. Summary of the Invention

[0004] The present invention provides a display panel and a display device to improve the light output uniformity and light output efficiency of the display panel.

[0005] In a first aspect, an embodiment of the present invention provides a display panel, including:

[0006] A driving substrate and a light-emitting element located on one side of the driving substrate; the light-emitting element includes a light-emitting body, a first electrode and a second electrode, the first electrode and the second electrode are both located on the side of the light-emitting body facing the driving substrate, the first electrode includes a first surface facing the driving substrate, the second electrode includes a second surface facing the driving substrate, and the first surface is located on a side of the second surface close to the driving substrate; the driving substrate includes a groove portion and / or a supporting portion, the first electrode is arranged in the groove portion, and the second electrode is in contact with the supporting portion; the driving substrate also includes a first reflecting portion, and along the thickness direction of the display panel, the first reflecting portion overlaps with the light-emitting body between the first electrode and the second electrode.

[0007] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel provided by any embodiment of the present invention.

[0008] The display panel provided by an embodiment of the present invention, by providing a groove portion and / or a support portion on a driving substrate, with a first electrode provided in the groove portion and a second electrode in contact with the support portion, can adjust the horizontality of the light-emitting element after binding to ensure that the upper and lower surfaces of the light-emitting element remain on a horizontal plane, thereby solving the problem of a height difference between the two electrodes of the light-emitting element, which leads to deviations in the light emission and light output angles after the light-emitting element is bound, and improving the light output uniformity of the display panel. In addition, by providing a first reflective portion on the driving panel, the first reflective portion overlaps with the light-emitting body between the first electrode and the second electrode along the thickness direction of the display panel, that is, the first reflective portion is provided between the two electrodes, so that the light emitted from the bottom of the light-emitting element is reflected by the first reflective portion and then emitted from above, thereby improving the light output efficiency of the light-emitting element, thereby solving the problem that the light emitted downward from the bottom of the light-emitting element is difficult to utilize, resulting in light loss and low light output efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0010] Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure along the section line A-A';

[0011] Figure 3 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0012] Figure 4 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0013] Figure 5 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0014] Figure 6 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0015] Figure 7 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0016] Figure 8 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0017] Figure 9 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0018] Figure 10 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0019] Figure 11 is a schematic diagram of a light guide opening provided by an embodiment of the present invention;

[0020] Figure 12 is a schematic diagram of another light guide opening provided by an embodiment of the present invention;

[0021] Figure 13 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0022] Figure 14 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0023] Figure 15 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0024] Figure 16 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0025] Figure 17 yes Figure 1 Another cross-sectional structural diagram along the section line AA';

[0026] Figure 18 2 is a schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0028] Figure 1 is a structural diagram of a display panel provided by an embodiment of the present invention, Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure along the section line A-A', see Figure 1 and Figure 2As shown, the display panel includes: a drive substrate 10 and a light-emitting element 20 located on one side of the drive substrate 10. The light-emitting element 20 includes a light-emitting body 210, a first electrode 220, and a second electrode 230. The first electrode 220 and the second electrode 230 are located on the same side of the drive substrate 10, and both are located on the side of the light-emitting body 210 facing the drive substrate 10. Specifically, the first electrode 220 includes a first surface 2201 facing the drive substrate 10, and the second electrode 230 includes a second surface 2301 facing the drive substrate 10. The first surface 2201 is located on the side of the second surface 2301 that is closer to the drive substrate 10. That is, the distance between the second surface 2301 of the second electrode 230 and the lower surface of the array substrate 10 is greater than the distance between the first surface 2201 of the first electrode 220 and the lower surface of the drive substrate 10.

[0029] It is understandable that since the first electrode 220 and the second electrode 230 are both located on the side of the light-emitting body 210 facing the drive substrate 10, and the first surface 2201 of the first electrode 220 is closer to the drive substrate 10 than the second surface 2301 of the second electrode 230, there is a height difference between the first electrode 220 and the second electrode 230, which causes the light-emitting element 20 to be easily deviated from the light-emitting and light-emitting angles after being bound, thereby affecting the uniformity and light-emitting efficiency of the display panel and resulting in poor display effects. To prevent this problem, the present application adjusts the horizontality of the light-emitting element 20 by providing a groove portion 110 and / or a support portion 120 on the drive substrate 10, thereby improving the uniformity of light emission.

[0030] Specifically, the driving substrate 10 includes a groove portion 110 and / or a support portion 120. The groove portion 110 can be set at a position corresponding to the driving substrate 10 directly below the first electrode 220, and the first electrode 220 is set in the groove portion 110, so that the height difference between the first electrode 220 and the second electrode 230 is adjusted by the groove depth of the groove portion 110; the support portion 120 can also be set at a position corresponding to the driving substrate 10 directly below the second electrode 230, and the second electrode 230 contacts the support 120, so that the height difference between the first electrode 220 and the second electrode 230 is adjusted by adjusting the height of the support portion 120; the groove portion 110 can also be set at a position corresponding to the driving substrate 10 directly below the first electrode 220, and the support portion 120 can be set at a position corresponding to the driving substrate 10 directly below the second electrode 230, as shown in FIG. Figure 2As shown, the first electrode 220 is disposed in the groove portion 110, and the second electrode 230 is in contact with the support portion 120. Thus, the height difference between the first electrode 220 and the second electrode 230 is adjusted by adjusting the groove depth of the groove portion 110 and the height of the support portion 120. In the embodiment of the present invention, the height difference between the first electrode 220 and the second electrode 230 is balanced by adjusting the depth of the groove portion 110 and / or the height of the support portion 120, thereby ensuring that the upper and lower surfaces of the light-emitting element 20 are on a horizontal plane or the upper light-emitting surface of the light-emitting body 210 is approximately horizontal, thereby improving the light uniformity of the display panel.

[0031] It should be noted that this embodiment exemplifies the case where the first electrode 220 can be a P electrode (or anode) and the second electrode 230 can be an N electrode (or cathode). In other embodiments, the first electrode 220 and the second electrode 230 can also be other cases, and the embodiment of the present invention is not limited to this. In addition, the groove portion 110 and / or the support portion 120 can be provided on the drive substrate 10, and can be provided according to the actual requirements of the display panel and its manufacturing method, and the embodiment of the present invention is not limited to this.

[0032] In addition, the driving substrate 10 further includes a first reflective portion 310 , which overlaps the light emitting body 210 between the first electrode 220 and the second electrode 230 along the thickness direction of the display panel, that is, the first reflective portion 310 is located between the groove portion 110 and the support portion 120 .

[0033] It is understandable that the light emitted by the light-emitting element 20 is directed in all directions. However, due to the obstruction of the drive substrate 10, the light emitted downward from the bottom of the light-emitting element 20 is difficult to be utilized, resulting in light loss and low light extraction efficiency. By providing the first reflective portion 310 between the groove portion 110 and the support portion 120 on the base substrate 10, the light emitted downward from the bottom of the light-emitting element 20 is reflected by the first reflective portion 310 and emitted from the top of the light-emitting element 20, thereby improving the light extraction efficiency of the light-emitting element 20.

[0034] It should be noted that the first reflective portion 310 can be integrally provided with the driving substrate 10. For example, by patterning the driving substrate 10, the first reflective portion 310 is formed on the surface of the driving substrate 10 on the side close to the light emitting element 20. Figure 2 or, the first reflective portion 310 may be provided independently of the drive substrate 10 (not shown in the figure), and the embodiment of the present invention does not limit the specific configuration of the first reflective portion 310.

[0035] Furthermore, the cross-sectional shape of the groove portion 110 may be a trapezoid, a semicircle, a rectangle, or other shapes, and the cross-sectional shape of the support portion 120 may be a trapezoid, a semicircle, a rectangle, or other shapes. The embodiment of the present invention does not limit the cross-sectional shapes of the groove portion 110 and the support portion 120, and they are specifically set according to the actual requirements of the manufacturing method of the display panel. Figure 2 The description will be made by taking the trapezoidal cross-sectional shape of the groove portion 110 and the support portion 120 as an example.

[0036] Optionally, a driving circuit (not shown in the figure) for driving the light-emitting element 20 to emit light is provided in the driving substrate 10. The driving circuit is electrically connected to the light-emitting element 20 and is used to drive the light-emitting element 20 to emit light. Depending on the driving mode of the light-emitting element 20, the specific setting mode of the driving circuit may be different. Specifically, when the driving mode of the light-emitting element 20 is active driving, the driving circuit may include a plurality of thin-film transistors, which drive the light-emitting element 20 to emit light through the thin-film transistors; when the driving mode of the light-emitting element 20 is passive driving, the driving circuit may include a cathode signal line and an anode signal line, which drives the light-emitting element 20 to emit light through the cathode signal line and the anode signal line. The specific setting mode of the driving circuit is not described in the embodiment of the present invention.

[0037] It should be noted that the embodiment of the present invention may further include other structures required to ensure the normal operation of the display panel, which will not be detailed here.

[0038] The display panel provided by an embodiment of the present invention is provided with a groove portion and / or a support portion on a driving substrate. Specifically, the groove portion is provided directly below the first electrode, and the first electrode is provided in the groove portion. The support portion is provided directly below the second electrode, and the second electrode is in contact with the support portion. By adjusting the depth of the groove portion and the height of the support portion, the height difference between the first electrode and the second electrode is balanced, ensuring that the upper surface and the lower surface of the light-emitting element are on a horizontal plane or approximately horizontal, thereby improving the light uniformity of the display panel. In addition, the driving substrate also includes a first reflective portion, which is provided between the groove portion and the support portion. The first reflective portion can make the light emitted downward from the bottom of the light-emitting element be reflected by the first reflective portion and emitted from the top of the light-emitting element, thereby improving the light output rate of the light-emitting element.

[0039] Based on the above embodiments, continue to refer to Figure 2As shown, the driving substrate 10 includes a groove portion 110 and a supporting portion 120, and the light-emitting body 210 includes a first light-emitting surface 2101 close to the side of the driving substrate 10. Along the thickness direction of the display panel, the height of the first electrode 220 is h1, the groove depth of the groove portion 110 is h2, the height of the supporting portion 120 is h3, and the distance between the first light-emitting surface 2101 and the second surface 2301 is h4, wherein 80%≤(h1-h2) / (h3-h4)≤120%.

[0040] Exemplarily, the difference (h1-h2) between the height h1 of the first electrode 220 and the groove depth h2 of the groove portion 110 can be understood as the distance between the first light emitting surface 2101 and the surface of the driving substrate on the side close to the light emitting element 20, and the difference (h3-h4) between the height h3 of the support portion 120 and the distance h4 between the first light emitting surface 2101 and the second surface 2301 can also be the distance between the first light emitting surface 2101 and the surface of the driving substrate on the side close to the light emitting element 20. Setting 80%≤(h1-h2) / (h3-h4)≤120% can ensure that the upper surface and the lower surface of the light emitting element 20 are on a horizontal plane or approximately horizontal, thereby improving the light uniformity of the display panel.

[0041] On the basis of the above embodiment, h1-h2=h3-h4, thus ensuring that the upper surface and the lower surface of the light emitting element 20 are on the horizontal plane, further improving the light uniformity of the display panel.

[0042] On the basis of the above embodiments, continue to refer to Figure 2 As shown, the display panel further includes a first connecting electrode 410 and a second connecting electrode 420. The first connecting electrode 410 is electrically connected to the first electrode 220, and the second connecting electrode 420 is electrically connected to the second electrode 230. At least a portion of the first connecting electrode 410 is disposed in the groove portion 110, and at least a portion of the second connecting electrode 420 is disposed between the support portion 120 and the second electrode 230.

[0043] For example, continue to refer to Figure 2As shown, the display panel provided by the embodiment of the present invention further includes a first connecting electrode 410 and a second connecting electrode 410. The first connecting electrode 410 is connected to the driving substrate 10 and the first electrode 220, and is used to transmit a driving signal (e.g., a first voltage signal) provided by the driving substrate 10 to the first electrode 220. The second connecting electrode 420 is connected to the driving electrode 10 and the second electrode 230, and is used to transmit a driving signal (e.g., a second voltage signal) provided by the driving substrate 10 to the second electrode 230, thereby achieving normal light emission of the light-emitting element 20. Furthermore, in combination with the structure of the groove portion 110 and the support portion 120, at least a portion of the first connecting electrode 410 is disposed in the groove portion 110 to achieve electrical connection between the first electrode 220 and the driving substrate 10, and at least a portion of the second connecting electrode 420 is disposed between the support portion 120 and the second electrode 230 to achieve electrical connection between the second electrode 230 and the driving substrate 10. Figure 2 The following description will be made using the example of the first connecting electrodes 410 being disposed in the groove 110 and the second electrodes 420 being disposed between the support portion 120 and the second electrode 230. This ensures that the arrangement of the first connecting electrodes 410 and the second connecting electrodes 420 is simple. Furthermore, by disposing at least a portion of the first connecting electrodes 410 in the groove 110 and at least a portion of the second connecting electrodes 420 between the support portion 120 and the second electrode 230, the height difference between the first electrode 220 and the second electrode 230 can be balanced by disposing the first connecting electrodes 410 and the second connecting electrodes 420, thereby ensuring that the upper and lower surfaces of the light-emitting element 20 remain level or approximately level, thereby ensuring that the light-emitting element 20 has a good light extraction effect.

[0044] Based on the above embodiments, Figure 3 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', see Figure 3 , the second connection electrode 420 is reused as the support portion 120 .

[0045] A second connecting electrode 420 is directly provided on the driving substrate 10, and electrical connection between the second electrode 230 and the driving substrate 10 is achieved through the second connecting electrode 420. At the same time, the second connecting electrode 420 is reused as the supporting portion 120 to compensate for the height difference between the first electrode 220 and the second electrode 230, thereby ensuring that the upper surface and the lower surface of the light-emitting element 20 remain level. At the same time, it can also ensure that the supporting portion 120 is simply set up, and the display panel structure is simple.

[0046] Based on the above embodiments, Figure 4 yes Figure 1 Another cross-sectional structural diagram along the section line AA', optionally, as Figure 4As shown, the drive substrate 10 includes a first substrate region L1 located between the first reflective portion 310 and the first electrode 220, and a second substrate region L2 located between the first reflective portion 310 and the second electrode 230. The display panel further includes a first reflective layer 510, which covers the first substrate region L1 and the second substrate region L2.

[0047] For example, Figure 4 As shown, the drive substrate 10 further includes a first substrate region L1 located between the first reflective portion 310 and the first electrode 220, and a second substrate region L2 located between the first reflective portion 310 and the second electrode 230. A first reflective layer 510 is provided in the first substrate region L1 and the second substrate region L2. This allows light reflected by the first reflective portion 310 toward the first electrode 220 to be reflected by the first reflective layer 510 before being emitted from the top surface of the light-emitting element 20, thereby improving the light extraction efficiency of the display panel. Similarly, light reflected by the first reflective portion 310 toward the second electrode 230 to be reflected by the first reflective layer 510 before being emitted from the top surface of the light-emitting element 20, thereby improving the light extraction efficiency of the display panel.

[0048] On the basis of the above embodiment, continue to refer to Figure 4 Optionally, a second reflective layer 520 is provided on the surface of the first reflective portion 310 to enhance the reflective effect of the first reflective portion 310. Furthermore, the second reflective layer 520 is integrally provided with the first reflective layer 510, ensuring a simple arrangement of the first and second reflective layers 510, and a simple display panel structure. Furthermore, the second reflective layer 520 and the first reflective layer 510 can be manufactured simultaneously in a single manufacturing process, reducing the number of process steps and simplifying the display panel manufacturing process.

[0049] Figure 5 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', see Figure 4 and Figure 5 , the first reflective portion 310 includes a first reflective protrusion 3101 , or the first reflective portion 310 includes a first reflective recess 3102 .

[0050] For example, the first reflective portion 310 can achieve its reflective function by forming a first reflective protrusion 3101 or a first reflective recess 3102. Both the first reflective protrusion 3102 and the first reflective recess 3102 can reflect light emitted by the light-emitting body 210 toward one side of the drive substrate 10 toward a side away from the drive substrate 10, thereby improving the light extraction efficiency of the display panel.

[0051] It is understood that when the first reflective portion 310 includes the first reflective protrusion 3101, a portion of the light emitted from the light-emitting element 20 to the first reflective portion 310 is reflected by the first reflective protrusion 3101 and emitted directly toward the upper surface of the light-emitting element 20, while another portion of the light is reflected by the first reflective protrusion 3101 and emitted toward the first reflective portion 310, toward the first electrode 220, and toward the second electrode 230. When the first reflective portion 310 includes the first reflective recess 3102, the light emitted from the light-emitting element 20 to the first reflective portion 310 is reflected by the first reflective recess 3102 and emitted entirely toward the upper surface of the light-emitting element 20. In other words, the first reflective protrusion 3101 disperses the light, while the first reflective recess 3102 focuses the light. Therefore, in order to ensure the overall light-emitting effect of the display panel, when the first reflective portion 310 includes the first reflective protrusion 3101, other auxiliary reflective structures are also required to reflect the light toward the first electrode 220 and the second electrode 230 after being reflected by the first reflective protrusion 3101, and reflect it again toward the upper surface of the light-emitting element 20.

[0052] On this basis, Figure 6 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', Figure 7 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', see Figure 6 and Figure 7 As shown, the first reflective portion 310 includes a first reflective protrusion 3101, and the first reflective portion 310 also includes a plurality of second reflective protrusions 330 sequentially arranged on the surface of the first reflective protrusion 3101, or the first reflective portion 310 also includes a plurality of second reflective recesses 340 sequentially arranged on the surface of the first reflective protrusion.

[0053] As described above, when the first reflective portion 310 includes the first reflective protrusion 3101, other auxiliary reflective structures are required to reflect the light reflected by the first reflective protrusion 3101 and then reflected toward the first electrode 220 and the second electrode 230, and then reflect it back toward the upper surface of the light-emitting element 20. Specifically, the other auxiliary reflective structures may include a second reflective protrusion 330 or a second reflective recess 340. The second reflective protrusion 330 or the second reflective recess 340 further adjusts the reflection direction of the light emitted toward the first reflective protrusion 3101, so that more light is reflected toward the upper surface of the light-emitting element 20, thereby improving the reflection efficiency of the first reflective portion 310 and the light extraction efficiency of the display panel.

[0054] Based on the above embodiments, Figure 8 yes Figure 1Another cross-sectional structure diagram along the section line A-A', Figure 9 yes Figure 1 Another cross-sectional structure diagram along the section line A-A' is shown in FIG. Figure 8 and Figure 9 As shown, the driving substrate 10 includes a first substrate area L1 located between the first reflective portion 310 and the first electrode 220 and a second substrate area L2 located between the first reflective portion 310 and the second electrode 230; the display panel also includes a second reflective portion 350 located in the first substrate area L1 and the second substrate area L2.

[0055] As mentioned above, when the first reflective portion 310 includes the first reflective protrusion 3101, since the first reflective protrusion 3101 disperses the light emitted downward from the bottom of the light-emitting element 20 in various directions, the second reflective portion 350 is also required to reflect the light reflected to the side by the first reflective protrusion 3101 back to the upper surface of the light-emitting element 20. Figure 8 and Figure 9 As shown, the second reflective portion 350 includes at least one third reflective protrusion 3501, or the second reflective portion 350 includes at least one third reflective recess 3502. In this way, the reflection direction of the light directed toward the first reflective protrusion 3101 is further adjusted by the third reflective protrusion 3501 and / or the third reflective recess 3502, so that more light is reflected toward the upper surface of the light-emitting element 20, thereby improving the light extraction efficiency of the display panel. It should be noted that Figure 8 In the example, the third reflective protrusion 3501 is provided in the second reflective portion 350. Figure 9 In the embodiment, the third reflective recess 3502 is provided in the second reflective portion 350. It is understood that a third reflective protrusion and a third reflective recess (not shown in the figure) can also be provided in the second reflective portion 350 at the same time. The third reflective protrusion and the third reflective recess can be used to adjust the light emission angle and improve the light extraction efficiency of the display panel. Figure 8 As shown, optionally, the second reflective portion 350 includes at least one third reflective protrusion 3501, and the display panel also includes a third reflective layer 360, which covers the area of ​​the first substrate area L1 and the second substrate area L2 except the second reflective portion 350; along the thickness direction of the display panel, the maximum protrusion height h5 of the third reflective protrusion 3501 is smaller than the maximum protrusion height h6 of the first reflective protrusion 3101, and smaller than the groove depth h2 of the groove portion 110.

[0056] Illustratively, by providing a third reflective layer 360 to cover the areas of the first substrate area L1 and the second substrate area L2 except the second reflective portion 350, it is ensured that the light emitted from the light-emitting element 20 toward the side of the driving substrate 10 is reflected by the first reflective protrusion 3101 and the third reflective protrusion 3501, and then reflected by the third reflective layer 360 before being emitted from the upper surface of the light-emitting element 20, thereby improving the light extraction efficiency of the display device. Furthermore, since the third reflective protrusion 3501 is arranged on both sides of the first reflective protrusion 3101 and is respectively connected to the third reflective layer 360 and the first reflective protrusion 3101, and is used to reflect the light reflected by the first reflective protrusion 3101 to the lower side again, it is necessary to set the maximum protrusion height h5 of the third reflective protrusion 3501 to be smaller than the maximum protrusion height h6 of the first reflective protrusion 3101 along the thickness direction of the display panel (the X direction as shown in the figure), and smaller than the groove depth h2 of the groove portion 110. In this way, it can be ensured that the light emitted toward the side of the driving substrate 10 after being reflected by the first reflective protrusion 3101 can all be incident on the third reflective protrusion 3501, and at the same time, the light reflected to the side by the third reflective protrusion 3501 can all be incident on the third reflective layer 360, thereby improving the light output efficiency of the display panel.

[0057] On the basis of the above embodiment, continue to refer to Figure 8 The third reflective layer 360 includes a first reflective sidewall 3601 covering the sidewall of the groove portion 110 and a second reflective sidewall 3602 covering the sidewall of the support portion 120. The angle α between the first reflective sidewall 3601 and the plane on which the light-emitting body 210 is located satisfies 45°≤α<90°. The angle β between the second reflective sidewall 3602 and the plane on which the light-emitting body 210 is located satisfies 45°≤β<90°. The first reflective protrusion 3101 includes a first reflective convex ball (not shown in the figure), and the spherical center angle θ1 of the first reflective convex ball (not shown in the figure) satisfies 90°<θ1≤180°. The third reflective protrusion 350 includes a third reflective convex ball (not shown in the figure), and the spherical center angle θ2 of the third reflective convex ball (not shown in the figure) satisfies α<θ2<θ1.

[0058] Specifically, because the first reflective sidewall 3601 and the second reflective sidewall 3602 are used to direct the light reflected by the third reflective convex sphere to be emitted from the upper surface of the light-emitting element, it is necessary to reasonably set the angle between the first reflective sidewall 3601 and the second reflective sidewall 3602 and the plane on which the light-emitting body 210 is located to ensure that the light can be emitted from the upper surface of the light-emitting element after being reflected by the first reflective sidewall 3601 and the second reflective sidewall 3602, thereby improving the light extraction efficiency of the display panel. Specifically, the angle α between the first reflective sidewall 3601 and the plane on which the light-emitting body 210 is located can be set to satisfy 45°≤α<90°. The angle β between the second reflective sidewall 3602 and the plane of the light-emitting body 210 satisfies 45°≤β<90°. This ensures that light can be emitted from the upper surface of the light-emitting element after reflection by the first reflective sidewall 3601 and the second reflective sidewall 3602. On the other hand, it ensures that the first reflective sidewall 3601 and the second reflective sidewall 3602 are simple to set and the formation process is simple, avoiding excessively large or small angles that increase the difficulty of the process. Furthermore, the first reflective protrusion 3101 includes a first reflective convex ball, which can reflect light emitted from the light-emitting element in all directions toward the side of the drive substrate, thereby improving light utilization. Furthermore, considering the reflective effect and preparation process of the first reflective protrusion, the spherical center angle θ1 of the first reflective convex ball can be set to satisfy 90°<θ1≤180°. For example, when the spherical center angle θ1 of the first reflective convex ball is 180°, the first reflective convex ball is a hemispherical structure. The embodiment of the present invention does not limit the specific value of the spherical center angle of the first reflective convex ball. Furthermore, because the third reflective protrusion 350 originates from the first reflective protrusion 3101 and overlaps the first reflective sidewall 3601 or the second reflective sidewall 3602, forming a continuous and complete reflective surface, the central angle θ2 of the third reflective protrusion is constrained by the first reflective protrusion 3101 and the reflective sidewall, satisfying the relationship α < θ2 < θ1. This ensures that light reflected by the first reflective protrusion and emitted toward the drive substrate is incident on the third reflective protrusion. At the same time, light reflected to the side by the third reflective protrusion is incident on the first reflective sidewall 3601 or the second reflective sidewall 3602, thereby improving the light extraction efficiency of the display panel.

[0059] Based on the above embodiments, continue to refer to Figure 4 As shown, along the direction from the groove portion 110 to the support portion 120 (the Y direction shown in the figure), the maximum dimension d of the first reflective portion 310 is smaller than the minimum distance between the groove portion 110 and the support portion 120 .

[0060] Specifically, let the maximum size of the first reflection part 310 be d, the minimum distance between the center of the first reflection part 310 and the first connection electrode 410 be D1, and the minimum distance between the center of the first reflection part 310 and the second connection electrode 420 be D2. Then, it is necessary to set the maximum size d of the first reflection part 310 to be less than the sum of the minimum distance D1 between the center of the first reflection part 310 and the first connection electrode 410 and the minimum distance D2 between the center of the first reflection part 310 and the second connection electrode 420, that is, d < D1 + D2. In addition, setting d / 2 < D1 and d / 2 < D4 can ensure that there is enough area between the groove part 110 and the support part 120 to set the first reflection part 310.

[0061] Based on the above embodiments, continue to refer to Figure 4 , the first reflection part 310 includes a first reflection protrusion 3101, the light-emitting layer main body 210 includes a first light-emitting surface 2101 on the side close to the driving substrate. Along the thickness direction of the display panel (the X direction shown in the figure), the minimum distance between the first light-emitting surface 2101 and the groove part 110 is equal to the minimum distance between the first light-emitting surface 2101 and the first reflection protrusion 3101.

[0062] Specifically, the minimum distance between the first light-emitting surface 2101 and the groove part 110 can be understood as the distance between the first light-emitting surface 2101 and the upper surface of the groove part 110, and the minimum distance between the first light-emitting surface 2101 and the first reflection protrusion 3101 can be understood as the distance between the first light-emitting surface 2101 and the highest point (vertex) of the first reflection protrusion. Since both the groove part 110 and the first reflection protrusion 3101 can be obtained by etching the side of the driving substrate 10 close to the light-emitting element 20, setting the minimum distance between the first light-emitting surface 2101 and the groove part 110 to be equal to the minimum distance between the first light-emitting surface 2101 and the first reflection protrusion 3101 can ensure that the etching process is simple, that is, the preparation process of the first reflection protrusion 3101 of the groove part 110 is simple.

[0063] Based on the above embodiments, Figure 10 is Figure 1 another schematic cross-sectional structure along the section line A-A' in Figure 11 is a schematic diagram of a light guide opening provided by an embodiment of the present invention. Refer to Figure 10 and Figure 11A plurality of light guide openings 2110 are provided in the light-emitting body 210. Along the thickness direction of the display panel (the X direction shown in the figure), the light guide openings 2110 penetrate the light-emitting body 210. Along the direction parallel to the plane where the light-emitting body 210 is located, the light guide openings 2110 do not penetrate the light-emitting body 210. The driving substrate 10 includes a third substrate region L3 located between the center of the first reflective portion 310 and the first electrode 220, and a fourth substrate region L4 located between the center of the first reflective portion 310 and the second electrode 230. The light guide openings 2110 include a first light guide opening 2111 and a second light guide opening 2112. Along the thickness direction of the display panel, the first light guide opening 2111 at least partially overlaps with the third substrate region L3, and the second light guide opening 2112 at least partially overlaps with the fourth substrate region L4.

[0064] For example, in order to ensure that all the light reflected by the first reflective portion 310 can be emitted from the upper surface of the light-emitting element, a light guide opening 2110 can be set in the light-emitting body 210. Along the thickness direction of the display panel (the X direction as shown in the figure), the light guide opening 2110 penetrates the light-emitting body 210 to ensure that the light reflected by the first reflective portion 310 can be emitted from the light guide opening 2110, thereby improving the light extraction efficiency of the display panel. Furthermore, in order to avoid the setting of the light guide opening 2110 causing a disconnection in different light-emitting body 210 regions, the light guide opening 2110 can be set in a direction parallel to the plane where the light-emitting body 210 is located, so that the light guide opening 2110 does not penetrate the light-emitting body 210. Figure 11 As shown, this can ensure that the light-emitting element works normally, improve the light extraction efficiency, and enhance the light extraction efficiency of the display panel.

[0065] Furthermore, since the light guide opening 2110 is used to guide the light reflected by the first reflective portion 310 and the reflective layer out, the light guide opening 2110 needs to be disposed corresponding to the first reflective portion 310 and the reflective layer. Specifically, the driving substrate 10 includes a third substrate area L3 located between the center of the first reflecting portion 310 and the first electrode 220, and a fourth substrate area L4 located between the center of the first reflecting portion 310 and the second electrode 230; the light guide opening 2110 includes a first light guide opening 2111 and a second light guide opening 2112. Along the thickness direction of the display panel, the first light guide opening 2111 at least partially overlaps with the third substrate area L3, and the second light guide opening 2112 at least partially overlaps with the fourth substrate area L4. In this way, the light reflected by the first reflecting portion 310 and the reflective layer located in the third substrate area L3 is guided to the light-emitting side of the display panel through the first light guide opening 2111, and the light reflected by the first reflecting portion 310 and the reflective layer located in the fourth substrate area L4 is guided to the light-emitting side of the display panel through the second light guide opening 2112, thereby improving the light-emitting efficiency of the display panel.

[0066] Further, such as Figure 11 As shown, the top view shapes of the first light guide opening 2111 and the second light guide opening 2112 can be rectangular, diamond, etc., and can be set according to actual needs. This embodiment of the present invention is not limited to this. Figure 11 The description is made by taking the rectangular shapes of the first light guiding opening 2111 and the second light guiding opening 2112 in the top view as an example.

[0067] Based on the above embodiments, continue to refer to Figure 10 Along the thickness direction of the display panel, the third substrate region L3 covers the first light guide opening 2111, and the fourth substrate region L3 covers the second light guide opening 2112. In this case, the opening width W1 of the first light guide opening 2111 is smaller than that of the third substrate region L3, and the first light guide opening 2111 is located within the third substrate region L3; the opening width W2 of the second light guide opening 2112 is smaller than that of the fourth substrate region L4, and the first light guide opening 2112 is located within the fourth substrate region L4. This ensures that light reflected by the first reflective portion 310 and the reflective layer in the third substrate region L3 can be directed to the light exit side of the display panel through the first light guide opening 2111, and light reflected by the first reflective portion 310 and the reflective layer in the fourth substrate region L4 can be directed to the light exit side of the display panel through the second light guide opening 2112, thereby improving the light extraction efficiency of the display panel. Furthermore, it prevents the opening areas of the first light guide opening 2111 and the second light guide opening 2112 from being too large, preventing such large opening areas from affecting the normal operating area of ​​the light-emitting element and the brightness of the light output. Figure 12 is a schematic diagram of another light guide opening provided by an embodiment of the present invention, see Figure 11 and Figure 12 As shown, the first light guide opening 2111 is continuously arranged along the first direction, or the first light guide opening 2111 includes first sub-light guide openings 2111a arranged in sequence along the first direction; the first direction is parallel to the plane where the light-emitting body is located; the second light guide opening 2112 is continuously arranged along the first direction, or the second light guide opening 2112 includes second sub-light guide openings 2112a arranged in sequence along the first direction.

[0068] For example, Figure 11As shown, the first light guide opening 2111 can be an integral structure, that is, the first light guide opening 2111 is continuously arranged along the first direction, and the first direction here can be understood as the direction of extension of the long side of the first light guide opening 2111. In this way, the opening area of ​​the first light guide opening 2111 can be increased, ensuring that more light can be guided out through the first light guide opening 2111, and the first light guide opening 2111 is simply arranged. Similarly, the second light guide opening 2112 can be an integral structure, that is, the second light guide opening 2112 is continuously arranged along the first direction, and the first direction here can be understood as the direction of extension of the long side of the second light guide opening 2112. In this way, the opening area of ​​the second light guide opening 2112 can be increased, ensuring that more light can be guided out through the second light guide opening 2112, and the second light guide opening 2112 is simply arranged. Or, as Figure 15 As shown, the first light guide opening 2111 may include first sub-light guide openings 2111a sequentially arranged along a first direction, where the first direction is the arrangement direction of the plurality of first sub-light guide openings 2111a. This ensures that the arrangement of the first light guide openings 2111 is flexible. Similarly, the second light guide openings 2112 may include second sub-light guide openings 2112a sequentially arranged along the first direction, where the first direction is the arrangement direction of the plurality of second sub-light guide openings 2112a. This ensures that the arrangement of the second light guide openings 2112 is flexible.

[0069] Optionally, continue to refer to Figure 11 As shown, along the second direction, the opening size W1 of the first light guide opening 2111 is less than or equal to 1 μm, wherein the second direction is parallel to the plane where the light-emitting body 210 is located and perpendicular to the first direction; along the second direction, the opening size W2 of the second light guide opening 2112 is less than or equal to 1 μm.

[0070] Exemplarily, the second direction is parallel to the plane where the light-emitting body is located and perpendicular to the first direction. By setting the opening size of the light-guiding opening 2110 in the second direction to be less than or equal to 1 μm, the opening area of ​​the region where the light-guiding opening is formed is smaller. On the basis of ensuring that light can be guided through the light-guiding opening 2110, the opening area is ensured to be smaller, and the setting of the light-guiding opening does not affect the normal working area of ​​the light-emitting body, thereby ensuring the normal light output brightness of the light-emitting element.

[0071] Based on the above embodiments, Figure 13 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', see Figure 13 The first reflective portion 310 includes a plurality of first reflective protrusions 3101 , and the heights of the plurality of first reflective protrusions 3101 gradually decrease along a direction from the center of the first reflective portion 310 to the edge of the first reflective portion 310 , and the widths of the plurality of first reflective protrusions 3101 gradually decrease.

[0072] Specifically, the light emitted from the light-emitting element 20 toward the drive substrate 10 is reflected by the first reflective protrusion 3101 located at the center of the first reflective portion 310, and part of the light is emitted toward the side and downward. By setting the center of the first reflective portion 310 to point toward the edge of the first reflective portion 310, the height of the multiple first reflective protrusions 3101 gradually decreases, so that the light emitted toward the side and downward can be reflected by the first reflective protrusions 3101 located at the edge, and then can be emitted from the light-emitting side of the display panel, thereby improving the light extraction efficiency of the display panel. In addition, the smaller the width of the first reflective protrusion, the more first reflective protrusions 3101 can be set between the groove portion 110 and the support portion 120, which can achieve fine adjustment of the emission direction of the light. Specifically, it can be understood that among any two adjacent first reflective protrusions 3101, the first reflective protrusion far away from the center first reflective protrusion 3101 can adjust the light output direction of the light emitted by the first reflective protrusion close to the center first reflective protrusion 3101, thereby ensuring that the light reflected by the first reflective part 310 is emitted from the light output side of the display panel, thereby ensuring that the display panel has good light output efficiency.

[0073] Based on the above embodiments, Figure 14 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', see Figure 14 The first reflective portion 310 contacts the surface of the light-emitting body 210 close to the driving substrate 10, so that the heat generated during the operation of the light-emitting body 210 can be conducted through the first reflective portion 310. The first reflective portion 310 has both reflective and conductive heat dissipation functions, ensuring that the light-emitting element can dissipate heat and work normally.

[0074] Based on the above embodiments, Figure 15 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', Figure 16 yes Figure 1 Another cross-sectional structure diagram along the section line A-A', combined with Figure 15 and Figure 16 As shown, the display panel further includes a third reflective portion 370 , which is located on a side of the groove portion 110 away from the first reflective portion 310 , and / or located on a side of the support portion 120 away from the first reflective portion 310 .

[0075] Specifically, since the light emitted by the light emitting element 20 is directed in different directions, the light emitted from the side of the light emitting element 20 is difficult to be utilized, resulting in light loss. Therefore, the embodiment of the present invention provides a third reflective portion 370 on the side of the groove portion 110 away from the first reflective portion 310, and / or on the side of the support portion 120 away from the first reflective portion 310, so that the light emitted from the side of the light emitting element 20 is reflected by the third reflective portion 370 and then emitted from the light emitting side of the display panel, thereby further improving the light extraction efficiency. It should be noted that Figure 15 and Figure 16 The following description takes the case where the third reflective portion 370 is located on both the side of the groove portion 110 away from the first reflective portion 310 and the side of the support portion 120 away from the first reflective portion 310 as an example. In actual solutions, the two options can be selected according to needs, and the embodiments of the present invention are not limited to this.

[0076] On the basis of the above embodiments, continue to refer to Figure 15 and Figure 16 As shown, optionally, the third reflective portion 370 includes a fourth reflective protrusion 3701 , or the third reflective portion 370 includes a fourth reflective recess 3702 .

[0077] Specifically, the third reflective portion 370 can be realized by being set as a convex or concave. Figure 15 Take the third reflective portion 370 including the fourth reflective protrusion 3701 as an example for description. Figure 16 Taking the third reflective portion 370 including the fourth reflective recess 3702 as an example, the light emitted from the side of the light-emitting element 20 is adjusted in its light output direction through the fourth reflective protrusion 3701 or the fourth reflective recess 3702 to ensure that the adjusted light is emitted from the light output side of the display panel, thereby further improving the light output efficiency.

[0078] Based on the above embodiments, Figure 17 yes Figure 1 Another cross-sectional structure diagram along the section line A-A' is shown in FIG. Figure 17 As shown, the light emitting body 210 includes a first semiconductor layer 211 , a light emitting composite layer 212 and a second semiconductor layer 213 , the first electrode 220 is electrically connected to the first semiconductor layer 211 , and the second electrode 230 is electrically connected to the second semiconductor layer 212 .

[0079] For example, the first semiconductor layer 211 can be a P-type semiconductor layer, and the corresponding first electrode 220 can be a P-type electrode or anode. The first electrode 220 is electrically connected to the driving substrate 10 and is used to provide holes to the P-type semiconductor layer 211. The second semiconductor layer 213 can be an N-type semiconductor layer, and the corresponding second electrode 220 can be an N-type electrode or cathode. The second electrode 230 is electrically connected to the driving substrate 10 and is used to provide electrons to the N-type semiconductor layer. The electrons and holes recombine and emit light in the light-emitting composite layer 212, enabling the light-emitting element 20 to emit light normally.

[0080] Optionally, the light-emitting element may include a micro light-emitting element, such as a micro-LED, which has a small size and high spatial integration, and is convenient for realizing a high-resolution display panel, thereby ensuring a better display effect of the display panel.

[0081] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Figure 18 is a structural diagram of a display device provided by an embodiment of the present invention, such as Figure 18 As shown, the display device 1 includes the display panel 100 described in any of the above embodiments. Therefore, the display device 1 provided by the embodiment of the present invention has the corresponding beneficial effects of the above embodiments, which will not be repeated here. For example, the display device 1 can be an electronic device such as a mobile phone, a computer, a smart wearable device (for example, a smart watch), and an in-vehicle display device, which is not limited in the embodiment of the present invention.

[0082] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: It includes a driving substrate and a light-emitting element located on one side of the driving substrate; The light-emitting element includes a light-emitting body, a first electrode, and a second electrode. The first electrode and the second electrode are both located on a side of the light-emitting body facing the drive substrate. The first electrode includes a first surface facing the drive substrate. The second electrode includes a second surface facing the drive substrate. The first surface is located on a side of the second surface close to the drive substrate. The driving substrate includes a groove portion and / or a support portion, the first electrode is disposed in the groove portion, and the second electrode is in contact with the support portion; The driving substrate further includes a first reflective portion. Along a thickness direction of the display panel, in the same light-emitting element, the first reflective portion overlaps the light-emitting body between the first electrode and the second electrode.

2. The display panel according to claim 1, wherein: The display panel further includes a first connecting electrode and a second connecting electrode; The first connecting electrode is electrically connected to the first electrode, and the second connecting electrode is electrically connected to the second electrode; At least a portion of the first connecting electrode is disposed in the groove portion, and at least a portion of the second connecting electrode is disposed between the supporting portion and the second electrode.

3. The display panel according to claim 2, wherein: The second connecting electrode is reused as the supporting portion.

4. The display panel according to claim 1, wherein: The driving substrate includes a first substrate area located between the first reflecting portion and the first electrode and a second substrate area located between the first reflecting portion and the second electrode; The display panel further includes a first reflective layer, and the first reflective layer covers the first substrate region and the second substrate region.

5. The display panel according to claim 4, wherein: A second reflective layer is provided on the surface of the first reflective portion, and the second reflective layer is integrally provided with the first reflective layer.

6. The display panel according to claim 1, wherein: The first reflective portion includes a first reflective protrusion, or the first reflective portion includes a first reflective recess.

7. The display panel according to claim 6, wherein: The first reflective portion includes a first reflective protrusion; The first reflective portion further includes a plurality of second reflective protrusions sequentially arranged on the surface of the first reflective protrusion, or the first reflective portion further includes a plurality of second reflective recesses sequentially arranged on the surface of the first reflective protrusion.

8. The display panel according to claim 6, wherein: The driving substrate includes a first substrate area located between the first reflecting portion and the first electrode and a second substrate area located between the first reflecting portion and the second electrode; The display panel further includes a second reflective portion located in the first substrate region and the second substrate region; The second reflective portion includes at least one third reflective protrusion, or the second reflective portion includes at least one third reflective recess.

9. The display panel according to claim 8, wherein: The second reflective portion includes at least one third reflective protrusion; The display panel further includes a third reflective layer, wherein the third reflective layer covers the first substrate region and the second substrate region except the second reflective portion; Along the thickness direction of the display panel, a maximum protrusion height of the third reflective protrusion is smaller than a maximum protrusion height of the first reflective protrusion, and is smaller than a groove depth of the groove portion.

10. The display panel according to claim 9, wherein: The third reflective layer includes a first reflective sidewall covering the sidewall of the groove portion and a second reflective sidewall covering the sidewall of the support portion; an angle α between the first reflective sidewall and the plane where the light-emitting body is located satisfies 45°≤α<90°, and an angle β between the second reflective sidewall and the plane where the light-emitting body is located satisfies 45°≤β<90°; The first reflective protrusion includes a first reflective convex ball, and a spherical center angle θ1 of the first reflective convex ball satisfies 90°<θ1≤180°; The third reflective protrusion includes a third reflective convex sphere, and a spherical center angle θ2 of the third reflective convex sphere satisfies α<θ2<θ1.

11. The display panel according to claim 6, wherein: Along a direction in which the groove portion points toward the support portion, a maximum dimension of the first reflective portion is smaller than a minimum distance between the groove portion and the support portion.

12. The display panel according to claim 6, wherein: The first reflective portion includes a first reflective protrusion; The light-emitting body includes a first light-emitting surface close to a side of the driving substrate; Along the thickness direction of the display panel, a minimum distance between the first light-emitting surface and the groove portion is equal to a minimum distance between the first light-emitting surface and the first reflective protrusion.

13. The display panel according to claim 1, wherein The light-emitting body is provided with a plurality of light-guiding openings; Along the thickness direction of the display panel, the light guide opening penetrates the light emitting body; along the direction parallel to the plane where the light emitting body is located, the light guide opening does not penetrate the light emitting body; The driving substrate includes a third substrate region located between the center of the first reflective portion and the first electrode, and a fourth substrate region located between the center of the first reflective portion and the second electrode; The light guide openings include a first light guide opening and a second light guide opening. Along the thickness direction of the display panel, the first light guide opening at least partially overlaps with the third substrate area, and the second light guide opening at least partially overlaps with the fourth substrate area.

14. The display panel according to claim 13, wherein: Along the thickness direction of the display panel, the third substrate region covers the first light guide opening, and the fourth substrate region covers the second light guide opening.

15. The display panel according to claim 13, wherein: The first light guide opening is continuously arranged along a first direction, or the first light guide opening includes first sub-light guide openings arranged in sequence along the first direction; the first direction is parallel to the plane where the light-emitting body is located; The second light guide opening is continuously arranged along the first direction, or the second light guide opening includes second sub-light guide openings arranged in sequence along the first direction.

16. The display panel according to claim 15, wherein: Along the second direction, the opening size of the first light guide opening is less than or equal to 1 μm; the second direction is parallel to the plane where the light-emitting body is located and perpendicular to the first direction; Along the second direction, an opening size of the second light guide opening is less than or equal to 1 μm.

17. The display panel according to claim 1, wherein: The first reflective portion includes a plurality of first reflective protrusions; Along a direction from the center of the first reflective portion to the edge of the first reflective portion, the heights of the plurality of first reflective protrusions gradually decrease, and the widths of the plurality of first reflective protrusions gradually decrease.

18. The display panel according to claim 1, wherein The first reflective portion contacts a surface of the light-emitting body on a side close to the driving substrate.

19. The display panel according to claim 1, wherein The display panel further includes a third reflective portion; The third reflecting portion is located on a side of the groove portion away from the first reflecting portion, and / or the third reflecting portion is located on a side of the supporting portion away from the first reflecting portion.

20. The display panel according to claim 19, wherein The third reflective portion includes a fourth reflective protrusion, or the third reflective portion includes a fourth reflective recess.

21. The display panel according to claim 1, wherein The driving substrate includes the groove portion and the supporting portion; The light-emitting body includes a first light-emitting surface close to a side of the driving substrate; Along the thickness direction of the display panel, the height of the first electrode is h1, the groove depth of the groove portion is h2, the height of the support portion is h3, and the distance between the first light emitting surface and the second surface is h4; Among them, 80%≤(h1-h2) / (h3-h4)≤120%.

22. The display panel according to claim 21, wherein: h1-h2=h3-h4.

23. The display panel according to claim 1, wherein The light-emitting body comprises a first semiconductor layer, a light-emitting composite layer and a second semiconductor layer which are stacked; The first electrode is electrically connected to the first semiconductor layer, and the second electrode is electrically connected to the second semiconductor layer.

24. The display panel according to claim 1, wherein The light emitting element includes a micro light emitting element.

25. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 24.

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