A display panel and a display device

Abstract

The present invention provides a display panel and a display device. The display panel includes a driving substrate; a light-emitting element located on one side of the driving substrate, the light-emitting element having an electrode, and the light-emitting element being electrically connected to the driving substrate through the electrode; a packaging layer located on the side of the light-emitting element away from the driving substrate; and an elastic material at least covering a part of the electrode of the light-emitting element. The present invention can protect the pad or the connection between the trace and the electrode of the light-emitting element from breaking, thereby ensuring the reliability of the display panel and reducing the manufacturing cost of the display panel.

Description

Technical Field

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

[0002] In recent years, Micro-LED has become a hot technology in the display market. Compared with the mass-produced display technologies such as LCD and OLED, Micro-LED has more excellent performance in terms of brightness, color, viewing angle, contrast ratio, resolution, and lifespan.

[0003] Currently, rigid Micro-LED display panels developed by several manufacturers have emerged in the market. However, flexible or curved Micro-LED display panels are still some distance from mass production due to many technical defects. The main difficulty of flexible or curved Micro-LED display panels lies in the low yield rate, which is manifested in the great difficulty of massive transfer of Micro-LED chips, and the easy occurrence of breakage of light-emitting elements, traces, or pads during the bending process, resulting in a relatively high manufacturing cost. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a display panel and a display device, which can improve the situation of breakage of light-emitting elements, traces, or pads after bending of flexible or curved display panels, especially when applied to flexible or curved Mini LED and Micro LED panels, thereby reducing their manufacturing costs.

[0005] In a first aspect, the present application provides a display panel, including:

[0006] A driving substrate;

[0007] A light-emitting element, which is located on one side of the driving substrate, has an electrode, and is electrically connected to the driving substrate through the electrode;

[0008] A packaging layer, which is located on the side of the light-emitting element away from the driving substrate;

[0009] An elastic material, which at least covers part of the electrode of the light-emitting element.

[0010] In a second aspect, the present application provides a display device, which includes the display panel.

[0011] Compared with the prior art, the display panel and the display device provided by the present invention achieve at least the following beneficial effects:

[0012] The present application provides a display panel and a display device. The display panel includes a driving substrate, a light-emitting element, a packaging layer, and an elastic material. The elastic material at least coats the electrodes of the light-emitting element. The electrodes of the light-emitting element are usually electrically connected to the pads or traces of the driving substrate. To ensure a high luminous efficiency, the electrode size of the light-emitting element is usually small, and the light-emitting element is bonded to the driving substrate through a transfer process. The transfer process also has a great influence on the bonding stability of its electrodes. When the display panel is bent, the electrode connection of the light-emitting element is prone to peel off from the pad or trace of the driving substrate. By covering at least the electrodes of the light-emitting element with an elastic material, the elastic material has good compression and stretching capabilities, can effectively release the stress acting between the pad or trace and the electrodes of the light-emitting element, and protect against breakage between the two. At the same time, the packaging layer can reduce the contact between the elastic material and the outside world, thereby avoiding moisture erosion and causing the elastic material to denature, etc., thus ensuring the reliability of the display panel and reducing the manufacturing cost of the display panel. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for the description of the embodiments. The drawings described herein are used to provide a further understanding of the present invention, form a part of the present invention, and the schematic embodiments and descriptions thereof are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0014] Figure 1 A top view schematic diagram of a display panel provided by an embodiment of the present invention;

[0015] Figure 2 For Figure 1 A cross-sectional schematic diagram along the cutting line A-A';

[0016] Figure 3 For Figure 1 Another cross-sectional schematic diagram along the cutting line A-A';

[0017] Figure 4 For Figure 1 Another cross-sectional schematic diagram along the cutting line A-A';

[0018] Figure 5 Another top view schematic diagram of a display panel provided by an embodiment of the present invention;

[0019] Figure 6 For Figure 1 Another cross-sectional schematic diagram along the cutting line A-A';

[0020] Figure 7 For Figure 5 A cross-sectional schematic diagram along the cutting line B-B';

[0021] Figure 8 Another top view schematic diagram of the display panel provided by the embodiment of the present invention;

[0022] Figure 9 Another top view schematic diagram of the display panel provided by the embodiment of the present invention;

[0023] Figure 10 is Figure 9 A cross-sectional schematic diagram along the section line C-C';

[0024] Figure 11 is Figure 9 A cross-sectional schematic diagram along the section line D-D';

[0025] Figure 12 Another top view schematic diagram of the display panel provided by the embodiment of the present invention;

[0026] Figure 13 is Figure 12 A cross-sectional schematic diagram along the section line E-E';

[0027] Figure 14 Another top view schematic diagram of the display panel provided by the embodiment of the present invention;

[0028] Figure 15 A top view schematic diagram of a display device provided by the embodiment of the present invention. Detailed implementation manners

[0029] Next, the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As an emerging display technology, Micro-LED will gradually occupy the market in the near future. Flexible or curved display screens will become the urgently pursued terminal displays in the future due to their diverse application scenarios, wide application fields, and convenient carrying. However, there are many technical defects in flexible or curved Micro-LED display panels. The main difficulty of flexible or curved Micro-LED display panels lies in the low yield, which is manifested in the great difficulty of massive transfer of Micro-LED chips, and the easy breakage of light-emitting elements, traces, or pads during the bending process, resulting in a relatively high manufacturing cost.

[0031] Based on the above problems, the present invention application proposes a display panel. Please refer to Figures 1 - 2 , Figure 1A top view schematic diagram of a display panel provided by an embodiment of the present invention Figure 2 is Figure 1 a cross-sectional schematic diagram along the section line A-A'; a display panel 1 provided by an embodiment of the present invention includes a driving substrate 10, a light-emitting element 11 located on one side of the driving substrate 10. The light-emitting element 11 has an electrode 110, and the light-emitting element 11 is electrically connected to a pad or a trace of the driving substrate 10 through the electrode 110. Figure 2 In this embodiment, the pad 100 is used as an example. The display panel 1 further includes a packaging layer 13, and the packaging layer 13 is located on the side of the light-emitting element 11 away from the driving substrate 10. Optionally, the packaging layer 13 at least covers a part of the area of the light-emitting element 11, or the packaging layer 13 is on the light-emitting side of the light-emitting element 11, which can protect the light-emitting element 11 from being eroded by external moisture. The display panel 1 further includes an elastic material 14, and the elastic material 14 at least covers the electrode 110 of a part of the light-emitting element 11.

[0032] The light-emitting element 11 is electrically connected to the pad 100 or the trace of the driving substrate 10 through the electrode 110. In order to ensure a high luminous efficiency, usually the size of the electrode 110 of the light-emitting element 11 is small, and the light-emitting element 11 is bonded to the driving substrate 10 through a transfer process. The transfer process also has a great influence on the bonding stability of its electrode 110. When the display panel 1 is bent, the elastic material 14 has elasticity and can effectively release the internal stress generated by external pressure, protecting the pad 100 or the trace and the electrode 110 of the light-emitting element 11 from peeling or breaking. At the same time, the packaging layer 13 can reduce the contact between the elastic material 14 and the outside, thereby avoiding moisture erosion and causing the elastic material 14 to denature, etc., thus ensuring the reliability of the display panel and reducing the manufacturing cost of the display panel.

[0033] Optionally, please continue to refer to Figure 2, a groove C is provided on the driving substrate 10, and the pad 100 or part of the traces of the driving substrate 10 are located in the groove C. The light-emitting element 11 is electrically connected to the pad 100 or the traces through the electrode 110, that is, the electrode 110 of the light-emitting element 11 is also in the groove C, and the groove C is filled with an elastic material 14. The elastic material 14 is at least partially located in the groove C. On the one hand, it is beneficial to the shaping of the elastic material 14 and helps to prevent the elastic material 14 from detaching from the surface of the driving substrate 10, so that the stress applied between the electrode 110 of the light-emitting element 11 and the connecting pad 100 cannot be effectively released. On the other hand, since the film layer of the driving substrate 10 has a certain rigidity, the pressure applied to the display panel 1 will be transmitted through the film layer of the driving substrate 10 to the elastic material 14, and then to between the electrode 110 of the light-emitting element 11 and the pad 100. Compared with the pressure directly applied between the electrode 110 of the light-emitting element 11 and the pad 100, this part of the pressure is blocked by the rigid material and then enters the elastic material 14 and is further weakened, thereby further ensuring that there is no peeling or fracture between the pad 100 or the traces and the electrode 110 of the light-emitting element 11, ensuring the reliability of the display panel and reducing the manufacturing cost of the display panel.

[0034] Optionally, the elastic material 14 can only cover the electrode 110 of the light-emitting element 11. Since the size of the electrode 110 of the light-emitting element 11 is usually small, and the light-emitting element 11 is bonded to the driving substrate 10 through a transfer process, the transfer process also has a great impact on the bonding stability of its electrode 110. When the display panel 1 is bent, the external pressure is more likely to act between the electrode 110 and the pad 100 or the traces, causing the two to peel or break. Therefore, only covering the elastic material 14 at the electrode 110 can, on the one hand, effectively ensure that there is no peeling or breakage between the pad 100 or the traces and the electrode 110 of the light-emitting element 11, and on the other hand, it can also prevent the elastic material 14 from being located on the light-emitting side of the light-emitting element 11, affecting the light-emitting efficiency of the light-emitting element 11, thereby largely ensuring the light-emitting efficiency of the light-emitting element 11.

[0035] Optionally, as Figure 3 shown, Figure 3 is Figure 1 another cross-sectional schematic diagram along the cutting line A-A'; the elastic material 14 can cover the light-emitting element 11. As Figure 3 shown, the driving substrate 10 has a groove C, and the light-emitting element 11 is at least partially located in the groove C. The elastic material 14 not only fills the groove C, but also covers the entire light-emitting element 11 and is partially located on the surface of the driving substrate 10. The elastic material 14 covers the entire light-emitting element 11, thereby further effectively releasing the external pressure and releasing the pressure transmitted from the light-emitting element 11 itself, ensuring the electrical connection between the light-emitting element 11 and the driving substrate 10, ensuring the reliability of the display panel, and reducing the manufacturing cost of the display panel.

[0036] Optionally, as Figure 4 shown, Figure 4 is Figure 1 another cross-sectional schematic view along the cutting line A-A'; the driving substrate 10 is not provided with a groove C, the elastic material 14 covers the whole light-emitting element 11, and then the encapsulation layer 13 is covered. The encapsulation layer 13 can cover the upper surface of the elastic material 14, that is, the side of the elastic material 14 away from the driving substrate 10, or can not cover the upper surface of the elastic material 14. This part can be selected according to the specific thickness of the elastic material 14. The elastic material 14 covers the whole light-emitting element 11, and the driving substrate 10 is not provided with a groove. On the one hand, it is convenient for the preparation of the driving substrate 10, and the driving substrate 10 does not need to add additional processes. On the other hand, it can further effectively release the external pressure, release the pressure transmitted from the light-emitting element 11 itself, ensure the electrical connection between the light-emitting element 11 and the driving substrate 10, ensure the reliability of the display panel, and reduce the manufacturing cost of the display panel. It should be noted that when the elastic material 14 covers the whole light-emitting element 11, a highly permeable elastic material 14 needs to be selected, which can include at least one of polydimethylsiloxane, polyurethane, rubber and polysulfide. Of course, it can also be other elastic materials, such as a transparent photoresist material with good ductility, so as to avoid affecting the light transmittance of the light-emitting element 11.

[0037] Optionally, referring to Figure 1 , the elastic materials 14 can correspond to the light-emitting elements 11 one by one, that is, an elastic material 14 is provided separately for each single light-emitting element 11 for protection, that is, there is a certain rigid material between adjacent elastic materials 14 to separate them. When a single light-emitting element 11 is damaged, it is beneficial to replace the single light-emitting element 11 and replenish the elastic material 14 again.

[0038] Optionally, as Figure 5 shown, Figure 5 is another top view schematic diagram of the display panel provided by the embodiment of the present invention; in the direction Z perpendicular to the display panel 1, the projection of the elastic material 14 covers the projections of the electrodes 110 of at least two light-emitting elements 11, that is, an elastic material 14 is uniformly provided for two or more light-emitting elements 11. The elastic material 14 is continuous between adjacent light-emitting elements 11 in this area. When this area is under pressure, the pressure release transmission path in the elastic material 14 is longer, so that not only the stress release ability of the display panel 1 can be improved, but also the filling fineness of the elastic material 14 can be reduced, which is beneficial to the preparation of the elastic material 14 on the display panel 1.

[0039] Optionally, please continue to refer to Figure 5, the elastic material 14 is formed in a strip shape and can cover the electrodes 110 of at least two light-emitting elements 11, such as covering a group of light-emitting units. A group of light-emitting units includes three light-emitting elements 11 of different colors, such as a red light-emitting element 11R, a green light-emitting element 11G, and a blue light-emitting element 11B. The elastic material 14 includes a first type 141 and a second type 142, wherein the extending directions of the first type 141 and the second type 142 intersect. For example, the extending direction of the first type 141 is X, and the extending direction of the second type 142 is Y, and X and Y are perpendicular to each other. The elastic material 14 is formed in a strip shape. Compared with the longer side, the shorter side releases different stresses. When the shorter side is under pressure, the transmission path inside the elastic material 14 is longer, so the stress is released more completely. The display panel 1 includes two types of elastic materials 14 with different extending directions. For example, the extending direction of the first type 141 is X, and the extending direction of the second type 142 is Y. Then the stress release capabilities in the X direction and the Y direction are equivalent. When the display panel 1 is under external pressure in different directions, the stress can be released well, thus ensuring the electrical connection between the light-emitting element 11 and the driving substrate 10, ensuring the reliability of the display panel, and reducing the manufacturing cost of the display panel.

[0040] Optionally, as Figure 6 and Figure 7 shown, Figure 6 is Figure 1 another cross-sectional schematic diagram along the cutting line A-A', Figure 7 is Figure 5 a cross-sectional schematic diagram along the cutting line B-B'; the driving substrate 10 includes a groove C, wherein the groove includes a first sub-groove C1 and a second sub-groove C2. The first sub-groove C1 includes a first bottom D1 close to the driving substrate 10 and a first top T1 far from the driving substrate 10. The second sub-groove C2 includes a second bottom D2 close to the driving substrate 10 and a second top T2 far from the driving substrate 10. In the direction perpendicular to the display panel 1, the projected area of the first top T1 of the first sub-groove C1 is smaller than the projected area of the first bottom T2, and the projected area of the second top T2 of the second sub-groove C2 is larger than the projected area of the second bottom. As Figure 6 shown, this part of the setting can be applied to the case where the elastic material 14 is set separately for a single light-emitting element 11. As Figure 7 shown, it can also be applied to the case where the elastic material 14 is set uniformly for two or more light-emitting elements 11. By setting the groove C on the driving substrate 10 as the first sub-groove C1 and the second sub-groove C2, and along the same direction, the inclined surfaces on the same side of the first sub-groove C1 and the second sub-groove C2 have different extending directions. As Figure 6In [description], the inclined surfaces S1 of the first sub-groove C1 and the inclined surfaces S2 of the second sub-groove C2 have different extending directions, which can cause external pressures in the same direction to be released in different directions (as shown by the arrows in [reference]), so that stress can be released from various angles of the display panel 1, avoiding stress release in the same direction, further enhancing the uniformity and completeness of stress release of the display panel 1, thus ensuring the electrical connection between the light-emitting element 11 and the driving substrate 10, ensuring the reliability of the display panel, and reducing the manufacturing cost of the display panel. Figure 6 As shown by the arrows in [reference], stress can be released from various angles of the display panel 1, avoiding stress release in the same direction, further enhancing the uniformity and completeness of stress release of the display panel 1, thus ensuring the electrical connection between the light-emitting element 11 and the driving substrate 10, ensuring the reliability of the display panel, and reducing the manufacturing cost of the display panel.

[0041] Optionally, please continue to refer to Figure 6 and Figure 7 , in the arrangement direction of the grooves C, the first sub-groove C1 and the second sub-groove C2 can be arranged adjacent to each other, that is, in the arrangement direction of the grooves C, the first sub-groove C1 and the second sub-groove C2 are arranged at intervals, so that the number between the first sub-groove C1 and the second sub-groove C2 is quite equal, enhancing the uniformity and completeness of stress release of the display panel 1, thus ensuring the electrical connection between the light-emitting element 11 and the driving substrate 10, ensuring the reliability of the display panel, and reducing the manufacturing cost of the display panel.

[0042] Optionally, as Figure 8 shown, Figure 8 is another top view schematic diagram of the display panel provided by the embodiment of the present invention; the display panel 1 includes at least one bending portion W, and the area of the region where the elastic material 14 is formed near or at the bending portion W is larger than the area of the region where the elastic material 14 is formed away from the bending portion W. The closer to or at the bending portion W, the more frequent and greater the external pressure received. Therefore, setting a larger area of the elastic material 14 in the region near or at the bending portion W can, on the one hand, release the stress received in the region of the bending portion W better, and on the other hand, in the region away from the bending portion W, such as Figure 8 the left and right edge portions of the display panel 1 in [reference], considering that the edge portions are more likely to be eroded by moisture and the like, not setting or reducing the setting of the elastic material 14 can avoid the denaturation of the elastic material 14, thus affecting the light transmittance or reliability of the light-emitting element 11, and thus ensuring the effective use of the display panel 1 on the basis of effectively releasing the stress in the display panel 1.

[0043] Optionally, as Figures 9 - 11 shown, Figure 9 is another top view schematic diagram of the display panel provided by the embodiment of the present invention, Figure 10 is Figure 9 a cross-sectional schematic diagram along the section line C-C', Figure 11 is Figure 9A schematic cross-sectional view along the cutting line D-D'; in the direction Z perpendicular to the display panel 1, the thickness of the elastic material 14 near or located at the bending part W can be set to be greater than the thickness of the elastic material 14 away from the bending part W. As Figure 10 shown in Figure 10 is the area near the bending part W, and the thickness of the elastic material 14 therein is H1. As Figure 11 shown in Figure 11 is the area away from the bending part W, and the thickness of the elastic material 14 therein is H2, and H1 is greater than H2. Optionally, the elastic material 14 near or located at the bending part W can be set to completely cover the light-emitting element 11, so as to increase the stress release ability near or located at the bending part W. For the area away from the bending part W, for example, Figure 9 the left and right edge parts of the display panel 1 shown in, the elastic material 14 only needs to cover the electrode 110 of the light-emitting element 11, so as to reduce the contact between the elastic material 14 and the outside world, and can avoid the elastic material 14 from being denatured due to external water vapor erosion, thereby affecting the light transmittance or reliability of the light-emitting element 11, and thus ensuring the effective use of the display panel 1 on the basis of effectively releasing the stress in the display panel 1.

[0044] Optionally, as Figures 12 - 13 shown in Figure 12 is another schematic top view of the display panel provided by the embodiment of the present invention. Figure 13 is Figure 12 a schematic cross-sectional view along the cutting line E-E'; it can be set that in the direction Z perpendicular to the display panel 1, the thickness of the part near or located at the bending part W in the area formed by a single elastic material 14 is greater than the thickness of the part away from the bending part W. As Figure 13 shown in, the area E1 is closer to the bending part W than the area E2. Then, in the area E1, the thickness h1 of the elastic material 14 is greater than the thickness h2 of the elastic material 14 in the area E2. Setting the thickness of the part near or located at the bending part W in the area formed by a single elastic material 14 to be greater than the thickness of the part away from the bending part W can further improve the stress release ability of the area near or located at the bending part W, thereby ensuring the electrical connection between the light-emitting element 11 and the driving substrate 10, ensuring the reliability of the display panel, and reducing the manufacturing cost of the display panel.

[0045] Optionally, please continue to refer to Figure 12 , it can be set that in the direction Z perpendicular to the display panel 1, the number m of the projections of a single elastic material 14 near or located at the bending part W covering the projection of the electrode 110 of the light-emitting element 11 is greater than the number n of the projections of a single elastic material 14 away from the bending part W covering the projection of the electrode 110 of the light-emitting element 11. As Figure 12Among them, near and at the bending part W, the projection of a single elastic material 14 covers the projections of the electrodes 110 of 45 light-emitting elements 11, m = 45, while in the area far from the bending part W, such as Figure 12 In the left and right edge parts of the display panel 1 shown, the projection of a single elastic material 14 covers the electrode 110 of 1 light-emitting element 11, n = 1; on the one hand, in the area near or at the bending part W, the number m of the projections of the single elastic material 14 covering the projections of the electrodes 110 of the light-emitting elements 11 is set to be larger, so that the elastic material 14 is continuous between two adjacent light-emitting elements 11 in this area. When this area is under pressure, the release path of the stress transmitted inside the elastic material 14 is longer, thereby improving the stress release ability of the area near or at the bending part W. On the other hand, in the area far from the bending part W, such as the edge part of the display panel 1, the number n of the projections of the single elastic material 14 covering the projections of the electrodes 110 of the light-emitting elements 11 is set to be smaller, so as to reduce the internal transmission of external water vapor in the elastic material 14. At the same time, the probability of damage to the light-emitting elements 11 in the edge part is relatively large, which is also beneficial to the replacement of the light-emitting elements 11 in the edge part, so as to ensure the effective use of the display panel 1 on the basis of effectively releasing the stress inside the display panel 1.

[0046] Optionally, as Figure 14 shown, Figure 14 is a top view schematic diagram of another display panel provided by an embodiment of the present invention; in the direction Z perpendicular to the display panel 1, the width d1 of the first gap between the projections of two adjacent elastic materials 14 near or at the bending part W can be set to be smaller than the width d2 of the second gap between the projections of two adjacent elastic materials 14 far from the bending part W. Here, the first gap d1 and the second gap d2 refer to the minimum distance between the projections of two adjacent elastic materials 14. Through this setting, on the one hand, the stress release ability of the area near or at the bending part W is improved. On the other hand, in the area far from the bending part W, such as Figure 14 the left and right edge parts of the display panel 1, the gap width between adjacent elastic materials 14 is increased to prevent adjacent elastic materials 14 from being connected together, thereby preventing water vapor in the edge area from eroding inwards from the continuous elastic materials 14, so as to ensure the effective use of the display panel 1 on the basis of effectively releasing the stress inside the display panel 1.

[0047] It should be noted that the above-mentioned differential settings based on the areas near or at the bending part W and far from the bending part W can be adopted alone or can be selectively combined according to specific requirements, such as Figure 12As shown in the figure, in the region near or at the bending portion W, the number m of projections of the single elastic material 14 covering the projections of the electrodes 110 of the light-emitting element 11 is greater than the number n of projections of the single elastic material 14 covering the projections of the electrodes 110 of the light-emitting element 11 away from the bending portion W. At the same time, the thickness of the portion near or at the bending portion W within the region formed by the single elastic material 14 is greater than the thickness of the portion away from the bending portion W. This part can be selectively set according to the specific bending degree of the display panel 1 or the magnitude of the external pressure applied, and the present invention does not make any limitations in this regard.

[0048] The present invention can be applied to flexible display panels or curved display panels. Corresponding to a flexible display panel, its driving substrate is a flexible substrate, such as materials like PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PI (polyimide), etc.

[0049] Such as Figure 15 , Figure 15 is a top view schematic diagram of a display device provided by an embodiment of the present invention; an embodiment of the present invention also provides a display device 2, the display device 2 includes the above-mentioned display panel 1, and the beneficial effects produced by the display device are also the same as those described in the above-mentioned embodiment, and will not be elaborated here. The display panel 1 can include a flexible or curved display panel and can be applied to various display scenarios such as smart mobile terminals, in-vehicle displays, wearable displays, and advertising displays.

[0050] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A display panel, characterized in that, comprising: a driving substrate; a light-emitting element located on one side of the driving substrate, the light-emitting element having an electrode, and the light-emitting element being electrically connected to the driving substrate through the electrode; a packaging layer located on the side of the light-emitting element away from the driving substrate; an elastic material at least covering part of the electrode of the light-emitting element; the driving substrate has a groove, and in the direction perpendicular to the display panel, the projection of the electrode is located within the projection of the groove, and the groove is filled with an elastic material; the groove includes a first sub-groove and a second sub-groove, the first sub-groove having a first top and a first bottom, the first top being the side of the first sub-groove away from the driving substrate, and the first bottom being the side of the first sub-groove close to the driving substrate; the second sub-groove having a second top and a second bottom, the second top being the side of the second sub-groove away from the driving substrate, and the second bottom being the side of the second sub-groove close to the driving substrate; in the direction perpendicular to the display panel, the projected area of the first top is smaller than the projected area of the first bottom, and the projected area of the second top is larger than the projected area of the second bottom.

2. The display panel according to claim 1, characterized in that, the elastic material covers the light-emitting element.

3. The display panel according to claim 1, characterized in that, the elastic materials correspond to the light-emitting elements one by one.

4. The display panel according to claim 1, characterized in that, in the direction perpendicular to the display panel, the projection of the elastic material covers the projections of the electrodes of at least two of the light-emitting elements.

5. The display panel according to claim 4, characterized in that, the elastic material is formed in a strip shape, the elastic material includes a first type and a second type, and the extending direction of the first type intersects with the extending direction of the second type.

6. The display panel according to claim 1, characterized in that, along the arrangement direction of the groove, the first sub-groove and the second sub-groove are arranged adjacent to each other.

7. The display panel according to claim 1, characterized in that, the display panel includes at least one bending portion, and the area of the region where the elastic material is formed near or at the bending portion is larger than the area of the region where the elastic material is formed away from the bending portion.

8. The display panel according to claim 1, characterized in that, the display panel includes at least one bending portion, and in the direction perpendicular to the display panel, the thickness of the elastic material near or at the bending portion is greater than the thickness of the elastic material away from the bending portion.

9. The display panel according to claim 1, characterized in that, the display panel includes at least one bending portion, and in the direction perpendicular to the display panel, the thickness of the region of a single elastic material near or at the bending portion is greater than the thickness of the region away from the bending portion.

10. The display panel according to claim 1, characterized in that, The display panel includes at least one bending portion. In a direction perpendicular to the display panel, the number of projections of a single elastic material that is close to or located at the bending portion covering the electrode projection of the light-emitting element is m, and the number of projections of a single elastic material that is far from the bending portion covering the electrode projection of the light-emitting element is n, where m > n.

11. The display panel according to claim 1, wherein, the display panel includes at least one bending portion. In a direction perpendicular to the display panel, there is a first gap between projections of two adjacent elastic materials that are close to or located at the bending portion, and there is a second gap between projections of two adjacent elastic materials that are far from the bending portion; the minimum width of the first gap is less than the minimum width of the second gap.

12. The display panel according to claim 1, wherein, the driving substrate is a flexible substrate.

13. A display device, wherein, it includes the display panel according to any one of claims 1 to 12.

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