Display panel and display device

Abstract

The application discloses a display panel and a display device, which comprise a screen body and a heat-sensitive structure. The screen body comprises a display part, a bending part and a bonding part which are sequentially connected. The display part is opposite to the bonding part and is arranged at intervals. The display part, the bending part and the bonding part form a containing space. The bending part comprises a first end part connected with the display part, a second end part connected with the bonding part and a main body part connecting the first end part and the second end part. The heat-sensitive structure is located in the containing space. The heat-sensitive structure is deformed with the increase of temperature, so that the radius of curvature of the first end part and / or the second end part is increased. The above scheme reduces the stress at the two ends of the bending part of the flexible display panel, and reduces the probability of the black spot and bright line problems of the display panel in the reliability test.

Description

TECHNICAL FIELD

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

[0002] In order to improve the screen-to-body ratio and reduce the frame, a flexible display panel can be realized by a pad bending process, which forms a bending part on the screen body. In order to further reduce the lower frame width, the existing methods include reducing the bending radius of the bending part in the pad bending process or changing the morphology of the bending part. However, it will cause the stress of the two ends of the bending part to be too large. SUMMARY

[0003] The technical problem solved by the present application is to provide a display panel and a display device, which can reduce the stress of the two ends of the bending part and reduce the probability of black spots and bright lines in the reliability test of the display panel.

[0004] To solve the above technical problems, one technical solution adopted by the present application is to provide a display panel, comprising a screen body and a thermal sensitive structure, the screen body comprises a display part, a bending part and a bonding part connected in sequence, the display part and the bonding part are arranged opposite and spaced apart, the display part, the bending part and the bonding part form a containing space, wherein the bending part comprises a first end part connected with the display part, a second end part connected with the bonding part and a main body part connecting the first end part and the second end part; the thermal sensitive structure is located in the containing space, and the thermal sensitive structure deforms with the increase of temperature, so as to increase the radius of curvature of the first end part and / or the second end part.

[0005] Preferably, the thermal sensitive structure is located on the surface of the side of the bending part facing the containing space. The thermal sensitive structure deforms with the change of temperature, thereby driving the deformation of the bending part.

[0006] Preferably, the thermal sensitive structure comprises a thermal shrinkage material layer, and the thermal shrinkage material layer is located on the surface of the side of the main body part facing the containing space. The thermal shrinkage material layer shrinks and deforms with the increase of temperature, thereby reducing the bending radius of the main body part, stretching the first end part and the second end part, increasing the radius of curvature of the first end part and the second end part, and reducing the stress.

[0007] Preferably, the thermal sensitive structure further comprises a thermal expansion material layer, the thermal expansion material layer is connected with the first end part and the second end part, and the thermal expansion material layer is located on the side of the thermal shrinkage material layer facing the containing space. The thermal expansion material layer expands and deforms with the increase of temperature, thereby driving the first end part and the second end part to move away from each other, increasing the radius of curvature of the two parts and reducing the stress.

[0008] Preferably, a gap is formed between the thermal expansion material layer and the thermal shrinkage material layer. The gap is provided to avoid the thermal expansion material layer affecting the appearance of the main body portion when expanding.

[0009] Preferably, the heat-sensitive structure further comprises a filler layer, the filler layer being located in the gap and connecting the thermal shrinkage material layer and the thermal expansion material layer, wherein the thermal expansion coefficient of the filler layer is between the thermal shrinkage material layer and the thermal expansion material layer. The filler layer has a small deformation amount with temperature change, and provides support for the thermal shrinkage material layer and the thermal expansion material layer, thereby improving the deformation effect.

[0010] Preferably, the heat-sensitive structure further comprises a thermal expansion material layer, the thermal expansion material layer being located on the surface of the side of the first end portion and / or the second end portion facing the accommodation space. The thermal expansion material layer can be attached to the first end portion and the second end portion, and drive the deformation of the first end portion and the second end portion.

[0011] Preferably, the heat-sensitive structure comprises a thermal expansion material layer; the thermal expansion material layer connects the first end portion and the second end portion, and a gap is formed between the thermal expansion material layer and the main body portion; or the thermal expansion material layer is located on the surface of the side of the first end portion and / or the second end portion facing the accommodation space.

[0012] Preferably, the heat-sensitive structure comprises a thermal shrinkage material block, the thermal shrinkage material block connecting the display portion and the bonding portion. The thermal shrinkage material block is used to reduce the distance between the display portion and the bonding portion at high temperature, thereby reducing the radius of the bending portion while increasing the radius of curvature of the first end portion and the second end portion.

[0013] Preferably, the display panel further comprises a support block connecting the display portion and the bonding portion, the support block comprising a first surface facing the display portion and a second surface facing the bonding portion; the heat-sensitive structure comprises a thermal shrinkage material layer, the thermal shrinkage material layer being located at least on the first surface and / or the second surface.

[0014] Preferably, the material of the heat-sensitive structure comprises one or more of polyvinylidene chloride, vinyl acetate copolymer, and metal-organic perovskite.

[0015] To solve the above technical problems, another technical solution adopted by the present application is to provide a display device comprising the display panel in any of the embodiments.

[0016] The beneficial effects of the present application are: different from the prior art, the display panel and the display device of the present application are provided with a heat-sensitive structure in the accommodation space. Since the heat-sensitive structure will deform with the change of temperature, the heat-sensitive structure will deform in the high-temperature environment of the reliability test. Since the heat-sensitive structure deforms, it can drive the first end part connected with the display part and the second end part connected with the bonding part to deform, so that the radius of curvature of the first end part and the second end part increases, thereby reducing the stress of the first end part and the second end part, and further reducing the probability of metal trace fracture and film layer tearing in the bending part, and finally reducing the risk of black spots and bright lines. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of an embodiment of the display panel of the present application;

[0018] Figure 2 is a structural schematic diagram of an embodiment of the display panel of the present application after deformation;

[0019] Figure 3 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0020] Figure 4 is a structural schematic diagram of another embodiment of the display panel of the present application after deformation;

[0021] Figure 5 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0022] Figure 6 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0023] Figure 7 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0024] Figure 8 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0025] Figure 9 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0026] Figure 10 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0027] Figure 11 is a top view schematic diagram of another embodiment of the display panel of the present application. DETAILED DESCRIPTION

[0028] For the purposes of the present application, the technical solutions and effects are more clear and explicit, the present application is further described in detail below with reference to the drawings and examples. Obviously, the described examples are only some of the examples of the present application, not all examples. Based on the examples in the present application, all other examples obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0029] The inventors found through long-term research that as the bending radius decreases or the bending part morphology changes, the stress at both ends of the bending part rises sharply. Under the influence of high temperature and high corrosion environment during reliability testing, the film layer and metal traces of the display panel are prone to crack or even break, which eventually leads to problems such as black spots and bright lines.

[0030] To solve the above problems, the present application provides a display panel and a display device, as shown below.

[0031] Referring to Figure 1 and Figure 11 , Figure 1 is a structural schematic diagram of an embodiment of the display panel of the present application; Figure 11 is a top view schematic diagram of another embodiment of the display panel of the present application. The display panel 10 includes a screen body 1 and a heat-sensitive structure, the screen body 1 includes a display part 11, a bending part 12 and a bonding part 13 connected in sequence, the display part 11 and the bonding part 13 are oppositely and spacedly arranged, and the display part 11, the bending part 12 and the bonding part 13 form a containing space 14. Specifically, the screen body 1 is made of flexible material, wherein the display part 11 is provided with a light-emitting unit (not shown in the figure) for emitting light and displaying a picture, the bonding part 13 is provided with a port (not shown in the figure) for bonding with a chip, a flexible circuit board and the like structure, the screen body 1 is provided with metal traces connecting the light-emitting unit and the port, and the flexible screen body 1 forms the containing space 14 inside after being bent. The bending part 12 includes a first end part 121 connected with the display part 11, a second end part 122 connected with the bonding part 13, and a main body part 123 connecting the first end part 121 and the second end part 122; the heat-sensitive structure is located in the containing space 14, and the heat-sensitive structure deforms with the increase of temperature, thereby increasing the curvature radius of the first end part 121 and / or the second end part 122.

[0032] The display panel 10 of the present application is provided with a heat-sensitive structure in the accommodation space 14. Since the heat-sensitive structure will deform with the change of temperature, in the high-temperature environment of reliability testing, the heat-sensitive structure deforms. Since the heat-sensitive structure deforms, it can drive the first end portion 121 of the bending portion 12 connected with the display portion 11 and the second end portion 122 of the bending portion 12 connected with the bonding portion 13 to deform, so that the curvature radius of the first end portion 121 and the second end portion 122 increases, thereby reducing the stress of the first end portion 121 and the second end portion 122, and further reducing the probability of metal trace fracture and film layer tearing in the bending portion 12, and finally reducing the risk of black spots and bright lines.

[0033] In the present embodiment, the heat-sensitive structure is located on the surface of the side of the bending portion 12 facing the accommodation space 14. Since the heat-sensitive structure will deform with the change of temperature, in the high-temperature environment of reliability testing, the heat-sensitive structure deforms. Since the heat-sensitive structure is attached to the bending portion 12, it can drive the bending portion 12 to deform, thereby reducing the stress of the first end portion 121 and the second end portion 122.

[0034] In an embodiment, the heat-sensitive structure can be made of heat-shrinkable material and / or thermal expansion material. Specifically, the heat-shrinkable material can include metal-organic perovskite, such as [C(NH2)3][Mn(HCOO)3], which has a negative thermal expansion coefficient. The thermal expansion material can include polyvinylidene chloride, vinyl acetate copolymer, etc., which have a relatively high positive thermal expansion coefficient.

[0035] In some embodiments, the heat-sensitive structure can only include heat-shrinkable material.

[0036] For example Figure 1 In the illustrated embodiment, the heat-sensitive structure includes a heat-shrinkable material layer 21, which is located on the surface of the side of the main body portion 123 facing the accommodation space 14. Referring to Figure 2 , Figure 2 is a structure schematic diagram of the display panel of the present application after deformation. Since the volume of the heat-shrinkable material layer 21 is negatively related to the temperature, that is, as the temperature rises, the heat-shrinkable material layer 21 shrinks and deforms, therefore in the high-temperature environment of reliability testing, the heat-shrinkable material layer 21 deforms along Figure 2The heat-shrink material layer 21 is adhered to the main body portion 123, and the main body portion 123 is located at the end of the bending portion 12 away from the display portion 11 and the bonding portion 13. When the heat-shrink material layer 21 shrinks, the main body portion 123 is bent along the arrow direction, so that the curvature radius of the arc-shaped main body portion 123 is reduced, and the first end portion 121 and the second end portion 122 on both sides of the main body portion 123 are straightened under the action of the main body portion 123, thereby reducing the curvature of the first end portion 121 and the second end portion 122. Since the curvature radius is the inverse of the curvature, the curvature radius of the first end portion 121 and the second end portion 122 is increased, and the stress of the first end portion 121 and the second end portion 122 is reduced, thereby reducing the probability of metal wire fracture and film layer tearing.

[0037] In some embodiments, the heat-sensitive structure can only include the thermal expansion material.

[0038] For example, referring to Figure 3 , Figure 3 is a structural schematic diagram of another embodiment of the display panel of the present application. The heat-sensitive structure includes a thermal expansion material layer 22. The thermal expansion material layer 22 is connected to the first end portion 121 and the second end portion 122, and a gap 15 is formed between the thermal expansion material layer 22 and the main body portion 123. As can be seen from Figure 3 , the bending portion 12 is arc-shaped and protrudes outward away from the display portion 11 and the bonding portion 13, and the first end portion 121 and the second end portion 122 gradually approach each other in the direction toward the main body portion 123. Referring to Figure 4 , Figure 4 is a structural schematic diagram of another embodiment of the display panel of the present application after deformation. Since the volume of the thermal expansion material layer 22 is positively correlated with the temperature, that is, the thermal expansion material layer 22 expands and deforms as the temperature rises, in the high-temperature environment of the reliability test, the thermal expansion material layer 22 expands along the arrow direction in Figure 4 , so when the thermal expansion material layer 22 expands and expands, an action force along the arrow direction is formed on the end of the first end portion 121 and the second end portion 122 close to the main body portion 123, that is, the end of the first end portion 121 and the second end portion 122 close to the main body portion 123 is hindered from approaching each other in the Z direction, thereby reducing the curvature of the first end portion 121 and the second end portion 122. Since the curvature radius is the inverse of the curvature, the curvature radius of the first end portion 121 and the second end portion 122 is increased, and the stress of the first end portion 121 and the second end portion 122 is reduced, thereby reducing the probability of metal wire fracture and film layer tearing. At the same time, since the gap 15 is formed between the thermal expansion material layer 22 and the main body portion 123, the thermal expansion material layer 22 is not easily affected in the process of expanding and deforming, so that the main body portion 123 can deform freely under the influence of the first end portion 121 and the second end portion 122, thereby avoiding stress concentration.

[0039] For example, referring to Figure 5 , Figure 5is a structural schematic diagram of another embodiment of the display panel of the present application. The thermal expansion material layer 22 is located on the surface of the first end portion 121 and the second end portion 122 on the side facing the accommodation space 14. Since the thermal expansion material layer 22 is attached to the inner surface of the first end portion 121 and the second end portion 122, when the thermal expansion material layer 22 expands and expands in a high temperature environment, it can drive the first end portion 121 and the second end portion 122 to move away from each other, thereby reducing the curvature of the first end portion 121 and the second end portion 122, and further reducing the stress at the first end portion 121 and the second end portion 122, thereby reducing the probability of metal wire fracture and film layer tearing. In other embodiments, the thermal expansion material layer 22 can also be located on the surface of the first end portion 121 or the second end portion 122 on the side facing the accommodation space 14.

[0040] In some embodiments, the heat-sensitive structure can simultaneously include thermal expansion material and thermal contraction material.

[0041] For example, refer to Figure 6 , Figure 6 is a structural schematic diagram of another embodiment of the display panel of the present application. In this embodiment, the heat-sensitive structure includes a thermal contraction material layer 21 and a thermal expansion material layer 22. The thermal contraction material layer 21 is located on the surface of the main body portion 123 on the side facing the accommodation space 14, and the thermal expansion material layer 22 is located on the surface of the first end portion 121 and the second end portion 122 on the side facing the accommodation space 14. This embodiment combines the characteristics of the thermal contraction material layer 21 and the thermal expansion material layer 22. In a high temperature environment, the thermal contraction material layer 21 shrinks and deforms, which drives the main body portion 123 to bend, so that the curvature radius of the arc-shaped main body portion 123 is reduced, and the first end portion 121 and the second end portion 122 on both sides of the main body portion 123 are straightened under the drive of the main body portion 123, thereby reducing the curvature of the first end portion 121 and the second end portion 122. At the same time, the thermal expansion material layer 22 expands and expands, which drives the first end portion 121 and the second end portion 122 to move away from each other, thereby reducing the curvature of the first end portion 121 and the second end portion 122. The thermal contraction material layer 21 and the thermal expansion material layer 22 simultaneously reduce the curvature of the first end portion 121 and the second end portion 122, thereby further reducing the stress at the first end portion 121 and the second end portion 122, and reducing the probability of metal wire fracture and film layer tearing. In this embodiment, the thermal contraction material layer 21 is connected to the two thermal expansion material layers 22 at both ends. In other embodiments, the thermal contraction material layer 21 and the thermal expansion material layer 22 can be spaced apart; or only the thermal expansion material layer 22 is formed on the surface of the first end portion 121 or the second end portion 122 on the side facing the accommodation space 14.

[0042] For example, refer to Figure 7 , Figure 7is a structural schematic diagram of another embodiment of the display panel 10 of the present application. In the present embodiment, the heat-sensitive structure comprises a heat-shrinkable material layer 21 and a heat-expandable material layer 22, the heat-expandable material layer 22 is connected to the first end portion 121 and the second end portion 122, and the heat-expandable material layer 22 is located on the side of the heat-shrinkable material layer 21 facing the empty space 14; further, a gap 15 is formed between the heat-expandable material layer 22 and the heat-shrinkable material layer 21. The present embodiment combines the characteristics of the heat-shrinkable material layer 21 and the heat-expandable material layer 22. At high temperature, the heat-shrinkable material layer 21 shrinks and deforms, which drives the main body portion 123 to bend, so that the curvature radius of the arc-shaped main body portion 123 is reduced, and the first end portion 121 and the second end portion 122 on both sides of the main body portion 123 are straightened under the drive of the main body portion 123, thereby reducing the curvature of the first end portion 121 and the second end portion 122; at the same time, the heat-expandable material layer 22 expands and expands, which forms a force on the end of the first end portion 121 and the second end portion 122 close to the main body portion 123 along the extension direction of the heat-expandable material layer 22, i.e. hinders the end of the first end portion 121 and the second end portion 122 close to the main body portion 123 from approaching each other in the Z direction, thereby reducing the curvature of the first end portion 121 and the second end portion 122. The heat-shrinkable material layer 21 and the heat-expandable material layer 22 simultaneously reduce the curvature of the first end portion 121 and the second end portion 122, thereby further reducing the stress at the first end portion 121 and the second end portion 122, reducing the probability of metal trace fracture and film layer tearing. Since the heat-shrinkable material layer 21 and the heat-expandable material layer 22 have a gap 15 therebetween, they are not easily affected by each other when deformed, so that the bending portion 12 can be freely deformed, reducing local stress. In other embodiments, the heat-expandable material layer 22 can also be arranged in close contact with the heat-expandable material layer 22.

[0043] Further, referring to Figure 8 , Figure 8is a structural schematic diagram of another embodiment of the display panel 10 of the present application. The heat-sensitive structure further comprises a filling layer 23 located in the gap 15 and connecting the heat-shrinking material layer 21 and the heat-expanding material layer 22, wherein the thermal expansion coefficient of the filling layer 23 is between the thermal expansion coefficient of the heat-shrinking material layer 21 and the thermal expansion coefficient of the heat-expanding material layer 22. The filling layer 23 is used to connect the heat-shrinking material layer 21 and the heat-expanding material layer 22. Since the thermal expansion coefficient of the filling layer 23 is greater than the thermal expansion coefficient of the heat-shrinking material layer 21 and less than the thermal expansion coefficient of the heat-expanding material layer 22, the deformation amount of the filling layer 23 is less than the deformation amount of the heat-shrinking material layer 21 and the heat-expanding material layer 22 at high temperature, thereby providing support for the heat-shrinking material layer 21 and the heat-expanding material layer 22, so that the heat-shrinking material layer 21 and the heat-expanding material layer 22 are deformed along the extension direction of the filling layer 23, thereby improving the effect of changing the radius of curvature of the bending portion 12. Specifically, the material of the filling layer 23 can be silicon nitride, and the thermal expansion coefficient of silicon nitride is in the range of 2.8-3.1, which is a low thermal expansion material and has a very small deformation amount at high temperature, thereby being able to provide strong support for the heat-shrinking material layer 21 and the heat-expanding material layer 22, so as to ensure that the heat-shrinking material layer 21 and the heat-expanding material layer 22 are deformed along the extension direction thereof, thereby improving the deformation effect. Specifically, in the present embodiment, the ratio of the length of the heat-shrinking material layer 21 to the length of the bending portion 12 is 0.3-0.4, the ratio of the length of the filling layer 23 to the length of the bending portion 12 is 0.5, and the ratio of the length of the heat-expanding material layer 22 to the length of the bending portion 12 is 0.7-0.8. In the prior art, the stresses borne by the first end portion 121 and the second end portion 122 are 1739 MPa and 1820 MPa, respectively. After the heat-sensitive structure of the present embodiment is applied, the stress borne by the first end portion 121 is reduced to 1667 MPa, and the stress borne by the second end portion 122 is reduced to 1732 MPa, thereby fully improving the problem of stress concentration at the two ends of the bending portion 12.

[0044] Referring to Figure 4 , the display portion 11 comprises a third surface 1a facing away from the bonding portion 13, and the bonding portion 13 comprises a fourth surface 1b facing away from the display portion 11. It should be noted that in the embodiment in which the heat-expanding material layer 22 is provided, in order to ensure that the radius of curvature of the first end portion 121 and the second end portion 122 increases in the heated state, the expansion degree of the heat-expanding material layer 22 should not be too large, and the first end portion 121 should not exceed the third surface 1a and the second end portion 122 should not exceed the fourth surface 1b in the Z direction.

[0045] In some embodiments, the heat-sensitive structure can also be provided between the display portion 11 and the bonding portion 13. For example, referring to Figure 9 , Figure 9is a structural schematic diagram of another embodiment of the display panel of the present application. The heat-sensitive structure comprises a heat-shrinkable material block 3 connecting the display part 11 and the bonding part 13. Specifically, the display part 11 and the bonding part 13 are both fixed with a support film 31 on the side facing the accommodation space 14, for improving the rigidity of the screen body 1, and the heat-shrinkable material block 3 is connected between the two support films 31, on the one hand, as a spacer, to increase the distance between the display part 11 and the bonding part 13, so as to avoid too small bending radius of the bending part 12; on the other hand, as the heat-shrinkable material block 3 shrinks and deforms with the increase of temperature, in the high-temperature environment of the reliability test, the heat-shrinkable material block 3 shrinks in the direction of the arrow, driving the display part 11 and the bonding part 13 to approach each other, thereby reducing the bending radius of the bending part 12, and in the shrinking process, the distance d1 between the display part 11 and the bonding part 13 is reduced. Since the bending part 12 is not affected by external force in this embodiment and can freely deform, and at the same time of deformation, the bending part 12 still maintains the shape of a circle or an ellipse. While the distance between the two ends of the bending part 12 in the Z direction is reduced, the width d2 of the bending part 12 in the X direction is increased. Due to the above deformation of the bending part 12, the curvature radius of the first end part 121 and the second end part 122 at the two ends in the Z direction is increased, and the curvature radius of the main body part 123 is reduced, thereby improving the problem of stress concentration. After applying the heat-sensitive structure of this embodiment, the stress of the first end part 121 is reduced to 1627 MPa, the stress of the second end part 122 is reduced to 1633 MPa, and the problem of stress concentration at the two ends of the bending part 12 is fully improved.

[0046] For another example, refer to Figure 10 , Figure 10 is a structural schematic diagram of another embodiment of the display panel of the present application. In this embodiment, the display panel 10 further comprises a support block 32 connecting the display part 11 and the bonding part 13, the support block 32 comprises a first surface 32a facing the display part 11 and a second surface 32b facing the bonding part 13; the heat-sensitive structure comprises a heat-shrinkable material layer 21 located at least on the first surface 32a and the second surface 32b. In this embodiment, the support block 32 does not deform, only the heat-shrinkable material layers 21 on both sides shrink, and the display part 11 and the bonding part 13 approach each other. In other embodiments, the heat-shrinkable material layer 21 can be arranged only on the first surface 32a or the second surface 32b, or multiple support blocks 32 and multiple heat-shrinkable material layers 21 can be arranged, and the two are arranged alternately.

[0047] In other embodiments, the heat-sensitive structure can also be located between the display part 11 and the bonding part 13, and on the side of the bending part 12 facing the accommodation space 14. The specific structure can refer to the foregoing embodiments, which will not be described here.

[0048] The application also provides a display device including the display panel 10 in any of the embodiments. The display device can be a mobile phone, a tablet, a wearable device, etc.

[0049] The above merely illustrates the embodiments of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process conversion using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the application.

Claims

1. A display panel, characterized in that, include: The screen body includes a display part, a bending part, and a bonding part connected in sequence. The display part and the bonding part are opposite to each other and spaced apart. The display part, the bending part, and the bonding part form an accommodating space. The bending part includes a first end connected to the display part, a second end connected to the bonding part, and a main body part connecting the first end and the second end. A thermally sensitive structure is located in the accommodating space and on the surface of the bent portion facing the accommodating space. The thermally sensitive structure deforms as the temperature increases, causing the radius of curvature of the first end and / or the second end to increase. The thermally sensitive structure includes a thermally expandable material layer; the thermally expandable material layer connects the first end and the second end, and a gap is formed between the thermally expandable material layer and the main body; or, the thermally expandable material layer is located on the surface of the first end and / or the second end facing the accommodating space.

2. The display panel according to claim 1, The thermally sensitive structure includes a heat-shrinkable material layer located on the surface of the main body facing the accommodating space.

3. The display panel according to claim 2, characterized in that, The thermally expandable material layer is located on the side of the thermally shrinkable material layer facing the accommodating space; A gap is formed between the thermally expanding material layer and the thermally shrinking material layer.

4. The display panel according to claim 3, characterized in that, The thermally sensitive structure further includes a filler layer located in the gap and connecting the heat-shrinkable material layer and the heat-expandable material layer, wherein the coefficient of thermal expansion of the filler layer is between that of the heat-shrinkable material layer and the heat-expandable material layer.

5. The display panel according to any one of claims 1-4, characterized in that, The thermally sensitive structure includes a heat-shrinkable material block, which connects the display section and the bonding section.

6. The display panel according to claim 1, characterized in that, The display panel further includes: A support block connects the display unit and the bonding unit, the support block including a first surface facing the display unit and a second surface facing the bonding unit; The thermally sensitive structure includes a heat-shrinkable material layer, which is located at least on the first surface and / or the second surface.

7. The display panel according to claim 1, characterized in that, The materials of the thermosensitive structure include one or more of polyvinylidene chloride, vinyl acetate copolymer, and organometallic perovskites.

8. A display device, characterized in that, Includes the display panel described in any one of claims 1-7.

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