Display panel and display device

Abstract

The embodiment of the utility model provides a display panel and a display device, relates to the technical field of display, and aims to improve the stretch rate of the display panel and prolong the service life of the display panel. The display panel comprises a plurality of display parts and a connecting structure, wherein the display parts are separated from one another; the connecting structures are positioned between the adjacent display parts and are connected with the adjacent display parts; the connecting structure comprises bending parts and extending parts which are alternately connected, the number of the bending parts is at least three, each extending part is located between the adjacent bending parts, and the bending directions of the adjacent bending parts are opposite; under the condition that the connecting structure is in the initial state, at least one bent part in the connecting structure and the extending part connected to one end of the bent part meet the condition that the distance between the center line of the bent part and the extending part is gradually reduced in the reference direction. The display panel is used for displaying images.

Description

TECHNICAL FIELD

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

[0002] Stretchable display is an important frontier direction of next-generation display technology, and is attracting more and more attention, especially in the fields of vehicle-mounted display, medical equipment and wearable devices. These fields require the display panel to have good stretchable performance, to be able to normally emit light in a complex curved surface structure, and not to affect the display effect and visual experience. Therefore, developing a display panel that can be freely stretched is a key research direction for the expansion and innovation of flexible display technology. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present disclosure aim to provide a display panel and a display device for improving the stretchability of the display panel and prolonging the service life of the display panel.

[0004] To achieve the above-mentioned purpose, embodiments of the present disclosure provide the following technical solutions:

[0005] In one aspect, a display panel is provided. The display panel comprises: a plurality of display parts and a connecting structure, the plurality of display parts being separated from each other; the connecting structure being located between adjacent display parts and connecting the adjacent display parts; wherein the connecting structure comprises: alternatingly connected bending parts and extension parts, the number of the bending parts being at least three, each extension part being located between adjacent bending parts, the bending directions of the adjacent bending parts being opposite; in the case that the connecting structure is in an initial state, at least one bending part and the extension part connected to one end of the bending part in the connecting structure meet: along a reference direction, the distance between the center line of the bending part and the extension part gradually decreases; the center line of the bending part is a straight line along the radial direction of the bending part and passing through the midpoint of the bending part, and the reference direction is a direction along the center line of the bending part and from the midpoint of the bending part to the end of the extension part away from the bending part.

[0006] In the above-mentioned display panel, since the distance between the center line of the bending part and the extension part gradually decreases along the reference direction, on the one hand, compared with the case that the distance between the center line of the bending part and the extension part is equal along the reference direction, the connecting structure of the present embodiment increases the radius of the bending part, and further increases the length of the connecting structure. Since the length of the connecting structure is lengthened, in the case that the stretching amount between the plurality of display parts is the same, the ratio of the deformation amount to the original length of the connecting structure will decrease, so that the deformation amount of the signal line on the connecting structure is also small, thereby making the signal line not easy to break, and improving the fatigue resistance of the signal line. On the other hand, during stretching, the extension part will be stretched first, so that the stress can be smoothly transferred from the extension part to the bending part, reducing the stress on the bending part, increasing the number of uses of the connecting structure, and improving the service life of the connecting structure. Therefore, the display panel provided by the present embodiment has high stretchability and long service life.

[0007] In some embodiments, the bending part comprises a first bending part, and the extension parts connected to the two ends of the first bending part are a first extension part and a second extension part; in the case that the connection structure is in the initial state, the distance between the center line of the first bending part and the first extension part gradually decreases along the reference direction, and the distance between the center line of the first bending part and the second extension part gradually decreases.

[0008] In some embodiments, the bending part further comprises a second bending part, one end of the second bending part is connected to the side edge of the display part, and the other end of the second bending part is connected to the first bending part through the extension part; one of the connection structures comprises two second bending parts, and the two second bending parts are respectively located at the two ends of the connection structure.

[0009] In some embodiments, the adjacent display parts are a first display part and a second display part, the first display part comprises a first side edge, the second display part comprises a second side edge, and the first side edge and the second side edge are arranged to face each other; the two ends of the connection structure are connected to the first side edge and the second side edge respectively.

[0010] In some embodiments, the connection structure comprises three bending parts, and the bending part located in the middle is the first bending part; the connection position of one end of the connection structure with the first side edge and the connection position of the other end of the connection structure with the second side edge are symmetric about the center line of the first bending part.

[0011] In some embodiments, the number of connection structures between adjacent display parts is one; the first side edge comprises a first end and a second end, the second side edge comprises a third end and a fourth end, the first end and the third end are symmetric about the center line of the first bending part; one end of the connection structure is connected to the first end, and the other end of the connection structure is connected to the third end; the first bending part of the connection structure is arranged close to the second end and the fourth end.

[0012] In some embodiments, the plurality of display parts comprises a plurality of repeating units, each of the repeating units comprises four display parts arranged in a 2x2 array, and four connection structures are connected between the four display parts; among the four connection structures, the first bending parts of the connection structures adjacent along a first direction are arranged close to each other, and the first bending parts adjacent along a second direction are arranged away from each other; one of the first direction and the second direction is the row direction of the arrangement of the four display parts, and the other is the column direction of the arrangement of the four display parts.

[0013] In some embodiments, the distance between the midpoint of the first bending portion and the end of the connecting structure along the reference direction is greater than the length of the first side.

[0014] In some embodiments, the number of connecting structures between adjacent display portions is two; the connecting positions of one end of the connecting structures and the first side are both spaced apart from the two ends of the first side; the connecting positions of the other end of the connecting structures and the second side are both spaced apart from the two ends of the second side; the first bending portions of the two connecting structures between adjacent display portions are arranged away from each other.

[0015] In some embodiments, the two connecting structures between adjacent display portions are symmetric about the line connecting the centers of the adjacent display portions.

[0016] In some embodiments, the distance between the midpoints of the first bending portions of the two connecting structures between adjacent display portions is greater than the length of the adjacent first side.

[0017] In some embodiments, the first extension portion and the second extension portion each form an angle with the midline of the first bending portion, and the first extension portion and the second extension portion are symmetrically arranged about the midline of the first bending portion.

[0018] In some embodiments, the connecting structure includes four bending portions, and the two bending portions in the middle of the four bending portions are both the first bending portion; one end of the connecting structure is connected to the first side at a first connecting position, and the other end of the connecting structure is connected to the second side at a second connecting position, and the angle between the line connecting the first connecting position and the second connecting position and the midline of any first bending portion is an acute angle.

[0019] In some embodiments, the number of connecting structures between adjacent display portions is one; the first side includes a first end and a second end, the second side includes a third end and a fourth end, the first end and the third end are symmetric about the midline of the first bending portion; one end of the connecting structure is connected to the second end, and the other end of the connecting structure is connected to the third end; one of the first bending portions in the connecting structure is arranged close to the first end, and the other of the first bending portions is arranged close to the fourth end.

[0020] In some embodiments, the distance between the midpoint of the two first bending portions in the connecting structure and the end of the connecting structure along the reference direction is greater than the length of the first side.

[0021] In some embodiments, the connecting structure between adjacent display portions comprises a first connecting structure and a second connecting structure; the first side edge comprises a first end and a second end, and the second side edge comprises a third end and a fourth end, the first end and the third end are symmetric about the middle line of the first bending portion; one end of the first connecting structure is spaced apart from the first end and the second end, and the other end of the first connecting structure is connected to the third end; one end of the second connecting structure is connected to the second end, and the other end of the second connecting structure is spaced apart from the third end and the fourth end.

[0022] In some embodiments, among the two first bending portions of the connecting structure, the distance between the midpoint of one first bending portion and the end of the connecting structure adjacent thereto along the reference direction is greater than half the length of the first side edge and less than the length of the first side edge, and the distance between the midpoint of the other first bending portion and the end of the connecting structure adjacent thereto along the reference direction is less than or equal to half the length of the first side edge.

[0023] In some embodiments, the first connecting structure and the second connecting structure are centrosymmetric about the midpoint of the center line of the adjacent display portions.

[0024] In some embodiments, the extension between the two first bending portions of the connecting structure is parallel to the first side edge.

[0025] In some embodiments, the adjacent display portions are a first display portion and a second display portion, the first display portion comprises a first side edge, and the second display portion comprises a second side edge, the first side edge and the second side edge are arranged to face each other; the first display portion further comprises a third side edge connected to the first side edge; one end of the connecting structure is connected to the third side edge, and the other end of the connecting structure is connected to the second side edge.

[0026] In some embodiments, the connecting position of the connecting structure and the third side edge is close to the first side edge; the second side edge comprises a fifth end close to the third side edge, and the connecting position of the connecting structure and the second side edge is the fifth end.

[0027] In some embodiments, the bending portion comprises a third bending portion, one end of the third bending portion is connected to the display portion, and the extension connected to the other end of the third bending portion is a third extension; in the case that the connecting structure is in an initial state, the distance between the middle line of the third bending portion and the third extension gradually decreases along the reference direction.

[0028] In some embodiments, the connecting structure between adjacent display portions includes a first connecting structure and a second connecting structure; the adjacent display portions are a first display portion and a second display portion respectively, the first display portion includes a first side edge, the second display portion includes a second side edge, the first side edge and the second side edge are arranged to face each other; the first display portion further includes a third side edge connected to the first side edge, the second display portion further includes a fourth side edge connected to the second side edge, the third side edge and the fourth side edge are respectively located on two sides of a line connecting the centers of the first display portion and the second display portion; one end of the first connecting structure is connected to the third side edge, the other end of the first connecting structure is connected to the second side edge; one end of the second connecting structure is connected to the first side edge, the other end of the second connecting structure is connected to the fourth side edge.

[0029] In some embodiments, a midpoint of the line connecting the centers of the first display portion and the second display portion is a reference midpoint, the first connecting structure and the second connecting structure are centrosymmetric about the reference midpoint.

[0030] In some embodiments, a plurality of the connecting structures are arranged around the display portion, and the plurality of the connecting structures are centrosymmetric about the center of the display portion.

[0031] In another aspect, a display device is provided. The display device includes: the display panel according to any one of the above embodiments; and a circuit board coupled to the display panel.

[0032] The display device has the same structure and beneficial technical effects as the display panel provided in some embodiments described above, and will not be described here again. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size, actual process, actual timing of signals, etc. of the products involved in the embodiments of the present disclosure.

[0034] Figure 1 A structural diagram of a display panel according to some embodiments;

[0035] Figure 2 A structural diagram of a connecting structure in the display panel of Figure 1

[0036] Figure 3 ​This is a structural diagram of a display panel according to some other embodiments;

[0037] Figure 4 for Figure 3 A structural diagram of the connection structure in the display panel;

[0038] Figure 5 This is a structural diagram of a display panel according to some other embodiments;

[0039] Figure 6 for Figure 5 A structural diagram of the connection structure in the display panel;

[0040] Figure 7 This is a structural diagram of a display panel according to some other embodiments;

[0041] Figure 8 for Figure 7 A magnified view of a portion of the display panel;

[0042] Figure 9 This is a structural diagram of a display panel according to some other embodiments;

[0043] Figure 10 for Figure 9 A structural diagram of the connection structure in the display panel;

[0044] Figure 11 This is a structural diagram of a display panel according to some other embodiments;

[0045] Figure 12 for Figure 11 A structural diagram of the connection structure in the display panel;

[0046] Figure 13 This is a structural diagram of a display panel according to some other embodiments;

[0047] Figure 14 for Figure 13 A structural diagram of the connection structure in the display panel;

[0048] Figure 15 This is a structural diagram of a display panel according to some other embodiments;

[0049] Figure 16 for Figure 1 A tensile crack test diagram of a display panel;

[0050] Figure 17 for Figure 1 Tensile crack test diagram of another type of display panel;

[0051] Figure 18 for Figure 5a structure simulation diagram of a display panel after stretching in FIG. 1;

[0052] Figure 19 a structure simulation diagram of a display panel after stretching in FIG. 1; Figure 5 a structure simulation diagram of a display panel after stretching in FIG. 1;

[0053] Figure 20 a structure simulation diagram of a display panel after stretching in FIG. 1; Figure 5 a structure simulation diagram of a display panel after stretching in FIG. 1;

[0054] Figure 21 a structure simulation diagram of a display panel after stretching in FIG. 1; Figure 3 a structure simulation diagram of a display panel after stretching in FIG. 1;

[0055] Figure 22 a structure simulation diagram of a display panel after stretching in FIG. 1; Figure 9 a structure simulation diagram of a display panel after stretching in FIG. 1;

[0056] Figure 23 a structure simulation diagram of a display panel after stretching in FIG. 1; Figure 9 a structure simulation diagram of a display panel after stretching in FIG. 1;

[0057] Figure 24 a structure diagram of a display device according to other embodiments. DETAILED DESCRIPTION

[0058] The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided in the present disclosure, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present disclosure.

[0059] Unless the context clearly requires otherwise, throughout the description and the claims, the term "comprise," and variations thereof (e.g., "comprises" and "comprising"), will be construed both to cover the containing feature or features and additional feature or features not described. In describing some embodiments, the expressions "coupled" and "connected" along with their derivatives, can be used. It should be understood that these terms are not intended as synonyms for each other. Rather, particular features are described as being coupled or connected to particular features, which can be either directly connected or connected through intervening features. The term "coupled" means either an indirect or direct connection or both. The term "coupled" can mean that two or more elements are either in direct physical or electrical contact or that two or more elements are not in direct contact with each other but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the specific embodiments described.

[0060] Hereinafter, the terms "first", "second", etc. are used only for the purpose of description and should not be construed as indicating or implying relative importance or implying the number of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0061] In describing some embodiments, the expressions "coupled" and "connected" and their derivatives can be used. The term "connected" should be interpreted broadly, for example, "connected" can be fixedly connected, or detachably connected, or integrated; can be directly connected, or indirectly connected through an intermediate medium. The term "coupled" indicates, for example, that two or more components have direct physical contact or electrical contact. The term "coupled" or "communicatively coupled" can also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content herein.

[0062] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", and includes the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0063] The use of "adapted to" or "configured to" herein means open and inclusive language that does not exclude additional tasks or steps.

[0064] Additionally, the use of "based on" means open and inclusive, as "based on" one or more stated conditions or values can in practice be based on additional conditions or values beyond those stated.

[0065] As used herein, "about," "approximately," or "around" includes the recited value and average values falling within an acceptable range of deviation from the particular value, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system).

[0066] As used herein, "parallel," "perpendicular," "equal" includes the recited condition and conditions approximating the recited condition within an acceptable range of deviation, as determined by one of ordinary skill in the art considering the measurement in question and the error in measuring the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where near parallel can have an acceptable range of deviation, for example, within 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where near perpendicular can also have an acceptable range of deviation, for example, within 5°. "Equal" includes absolute equality and near equality, where near equality can have an acceptable range of deviation, for example, where the difference between the two is less than or equal to 5% of either.

[0067] It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate or intervening layers can also be present.

[0068] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples of exemplary embodiments. In the drawings, the thickness of layers and regions are exaggerated for clarity. Accordingly, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region illustrated as a rectangle will typically have rounded or curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.

[0069] Embodiments of the present disclosure provide a stretchable display panel 1000, which can refer to Figure 1 or Figure 3The display device comprises a plurality of display units 100 and a connecting structure 200. The plurality of display units 100 are separated from each other, and the connecting structure 200 is located between and connects adjacent display units 100.

[0070] In some embodiments, reference can be made to Figure 2 The connecting structure 200 comprises alternating bending portions 201 and extension portions 202. The number of bending portions 201 is three, and each extension portion 202 is located between adjacent bending portions 201. The bending directions of adjacent bending portions 201 are opposite.

[0071] In other embodiments, reference can be made to Figure 4 In the connecting structure 200, the number of bending portions 201 can also be four.

[0072] With reference to Figure 2 Alternatively Figure 4 When the connecting structure 200 is in the initial state, adjacent extension portions 202 satisfy: along the reference direction X, the distance J between adjacent extension portions 202 is equal. The reference direction X is along the middle line M of the middle bending portion 201, and from the midpoint of the bending portion 201 to the direction of the end of the extension portion 202 connected to the bending portion 201 away from the bending portion 201.

[0073] The above-mentioned "the connecting structure 200 is in the initial state" refers to the original geometric state of the connecting structure 200 when it is not stretched or deformed.

[0074] With reference to Figure 1 The display unit 100 is provided with a light emitting unit 10. Each display unit 100 can include one or more light emitting units 10 (i.e. sub-pixels) for displaying images and thin film transistors for driving the light emitting units to emit light. The light emitting unit 10 can be an organic electroluminescent device (such as OLED), and its structure is not specially limited here.

[0075] The connecting structure 200 comprises a signal line L electrically connected to the light emitting unit 10. The signal line L at least includes a data line, a gate line, a driving voltage line and a voltage transmission line.

[0076] Each display unit 100 can include film layers such as organic layers, inorganic layers and metal layers. The inorganic layer is mainly used to make the encapsulation layer of the light emitting unit 10, the insulating layer and the active layer in the pixel circuit, etc., and the metal layer can be used to make the electrode of the light emitting unit 10 and the signal line in the pixel circuit, etc.

[0077] When the display panel 1000 is stretched, the connecting structure 200 deforms, increasing the distance between the display units 100. The connecting structure 200 maintains the connection between the display units 100, thus ensuring the integrity of the display panel 1000 while achieving a stretching effect. However, if the strain of the connecting structure 200 is too large during the stretching process—that is, if the ratio of the deformation of the connecting structure 200 to its original length is too large—it can easily cause cracks in the metal and inorganic layers of the connecting structure 200, which are not easily stretched. This can lead to excessive stretching distance causing the signal line L to break, resulting in a lower overall stretching rate of the display panel 1000 or uneven display within the display panel 1000, leading to display abnormalities. This impact is particularly pronounced when the size of the display units 1000 is large.

[0078] The inventors discovered that the factors affecting the stress magnitude of the connecting structure 200 are determined by the corner radius of the bending portion 201 in the connecting structure 200, the width of the connecting structure 200, and the length of the connecting structure 200. With the thickness and structure of the connecting structure 200 unchanged, increasing the radius of the bending portion 201 and the length of the connecting structure 200 can effectively reduce the strain of the connecting structure 200, ensuring that the signal lines on the connecting structure 200 do not break while improving fatigue resistance.

[0079] Therefore, embodiments of this disclosure provide a display panel 1000, with reference to... Figure 5 It includes: multiple display units 100 and a connecting structure 200. The multiple display units 100 are separated from each other; the connecting structure 200 is located between adjacent display units 100 and connects adjacent display units 100. (Refer to...) Figure 6 The connecting structure 200 includes: alternating bent portions 201 and extension portions 202, the number of bent portions 201 is at least three, each extension portion 202 is located between adjacent bent portions 201, and the bending directions of adjacent bent portions 201 are opposite.

[0080] Continue to refer to Figure 6 When the connecting structure 200 is in its initial state, at least one bend 201 in the connecting structure 200 and the extension 202 connected to one end of the bend 201 conform to the following: along the reference direction X, the distance J between the centerline of the bend 201 and the extension 202 gradually decreases; the centerline of the bend 201 is a straight line along the radial direction of the bend 201 and passing through the midpoint of the bend 201, and the reference direction X is along the centerline M of the bend 201 and from the midpoint of the bend 201 toward the end of the extension 202 away from the bend 201.

[0081] The display panel 1000 provided in the embodiments of this disclosure has a gradually decreasing distance J between the centerline of the bent portion 201 and the extension portion 202 along the reference direction X. On the one hand, compared with the case where the distance J between the centerline of the bent portion 201 and the extension portion 202 is equal along the reference direction X, the connecting structure 200 of this embodiment increases the radius of the bent portion 201, thereby increasing the length of the connecting structure 200. Since the length of the connecting structure 200 increases, the ratio of the deformation of the connecting structure 200 to its original length decreases when the stretching amount among the multiple display portions 100 is the same. This results in smaller deformation of the signal lines on the connecting structure 200, making the signal lines less prone to breakage and improving their fatigue resistance. On the other hand, during stretching, the extension portion 202 is stretched first, which allows the stress to transition smoothly from the extension portion 202 to the bent portion 201, reducing the stress on the bent portion 201, increasing the number of uses of the connecting structure 200, and thus improving the lifespan of the connecting structure 200. Therefore, the display panel 1000 provided in this embodiment has a high tensile strength and a long service life.

[0082] In some embodiments, reference Figure 6 The bending portion 201 includes a first bending portion 21, and extension portions 202 connected to both ends of the first bending portion 21 are a first extension portion 212 and a second extension portion 222. When the connecting structure 200 is in the initial state, along the reference direction X, the distance J1 between the center line M of the first bending portion 21 and the first extension portion 212 gradually decreases, and the distance J2 between the center line of the first bending portion 21 and the second extension portion 222 gradually decreases.

[0083] When the display panel 1000 is stretched along a direction perpendicular to the reference direction X, the first extension 212 and the second extension 222 are initially subjected to tensile force, becoming the primary stress-bearing areas and thus preventing the first bending portion 21 from directly bearing excessive stress. As the first extension 212 and the second extension 222 are stretched, the distance between them gradually increases, and stress is gradually transferred from the first extension 212 and the second extension 222 to the first bending portion 21. This gradual transition avoids sudden stress concentration at the first bending portion 21, thereby reducing the risk of fatigue or fracture in the first bending portion 21. Since reducing stress concentration at the first bending portion 21 significantly improves its fatigue resistance and material durability, it extends the service life of the connection structure 200 and reduces usage and maintenance costs.

[0084] In some embodiments, references may be further incorporated. Figure 5 and Figure 6The bending portion 201 also includes a second bending portion 22. One end of the second bending portion 22 is connected to the side of the display portion 100, and the other end of the second bending portion 22 is connected to the first bending portion 21 via an extension portion 202. A connecting structure 200 includes two second bending portions 22, which are located at opposite ends of the connecting structure 200. The second bending portion 22 is directly connected to the side of the display portion 100 and connected to the first bending portion 21 via the extension portion 202. This effectively disperses external forces and improves the overall stability of the connecting structure 200. The introduction of the second bending portion 22 makes the stress distribution in the connecting structure 200 more uniform. When the display panel 1000 is stretched or bent, the stress is smoothly transferred to the first bending portion 21 through the second bending portion 22 and the extension portion 202, reducing stress concentration and thus reducing the risk of fatigue and damage to the connecting structure 200.

[0085] For example, references can be further combined. Figure 5 and Figure 6 A connecting structure 200 includes a first bend 21 and two second bends 22, with the two second bends 22 located at opposite ends of the connecting structure 200. A first extension 212 and a second extension 222 are connected to opposite ends of the first bend 21, one second bend 22 is connected to the first extension 212, and the other second bend 22 is connected to the second extension 222. This design of one first bend 21 and two second bends 22 in the connecting structure 200 introduces multiple bends 201. The multiple bends 201 optimize the transmission path of tensile force, allowing the tensile force to be evenly distributed across the connecting structure 200 when stretching the display panel 1000, preventing stress concentration at a single bend 201, reducing local strain, and thus extending the service life of the connecting structure 200.

[0086] In some embodiments, reference Figure 5 The adjacent display units 100 are respectively a first display unit 101 and a second display unit 102. The first display unit 101 includes a first side C1, and the second display unit 102 includes a second side C2. The first side C1 and the second side C2 are arranged facing each other. The two ends of the connecting structure 200 are respectively connected to the first side C1 and the second side C2. This ensures that during the stretching of the display panel 1000, the stretching direction of the connecting structure 200 is consistent with the extension direction of the display unit 100, making the stretching smoother and allowing for more precise control of the stretching amount of the connecting structure 200. This avoids misalignment of the display unit 100 due to stretching, which could lead to twisting or structural deformation of the display panel 1000. In addition, it allows the multiple display units 100 to be arranged more compactly in the initial state of the display panel 1000, and provides a larger display area during stretching.

[0087] In some embodiments, in conjunction with reference Figure 5 and Figure 6 The connecting structure 200 includes three bends 201, with the middle bend 201 being the first bend 21. The connection points of one end of the connecting structure 200 with the first side C1 and the connection points of the other end of the connecting structure 200 with the second side C2 are symmetrical about the centerline M of the first bend 21. This symmetrical bending design of the connecting structure 200 optimizes the transmission path of tensile force, ensuring that stress is evenly distributed throughout the connecting structure 200, thus avoiding local stress concentration and reducing the risk of local fatigue failure. Furthermore, the first bend 21, as the middle bend, works together with the second bends 22 on both sides to prevent the connecting structure 200 from torturing due to unbalanced forces.

[0088] For example, in conjunction with reference Figure 5 and Figure 6 The number of connection structures 200 between adjacent display units 100 is one; the first side C1 includes a first end D1 and a second end D2, the second side C2 includes a third end D3 and a fourth end D4, the first end D1 and the third end D3 are symmetrical about the center line M of the first bend 21; one end of the connection structure 200 is connected to the first end D1, and the other end of the connection structure 200 is connected to the third end D3; the first bend 21 of the connection structure 200 is located close to the second end D2 and the fourth end D4.

[0089] With the two ends of the connecting structure 200 connected to the same end of the adjacent display section 100 and located at the side edge of the display section 100, the total length of the connecting structure 200 and the length of the extension can be increased. The longer the total length of the connecting structure 200, the more the connecting structure 200 will deform under tension when the display panel 1000 is stretched. In this case, the ratio of the deformation of the connecting structure 200 to its original length will decrease accordingly, making the signal lines on the connecting structure 200 less prone to breakage and improving the fatigue resistance of the signal lines. Secondly, the deformation stress can also be more evenly distributed over a longer path, reducing local stress concentration and improving the reliability of the connecting structure 200.

[0090] In some embodiments, continue to refer to Figure 5The plurality of display units 100 include a plurality of repeating units, each repeating unit including four display units 100 arranged in a 2×2 array, and four connecting structures 200 connecting the four display units 100. Among the four connecting structures 200, the first bending portions 21 of adjacent connecting structures 200 along the first direction Y1 are arranged close to each other, and the first bending portions 21 of adjacent connecting structures 200 along the second direction Y2 are arranged far apart from each other. One of the first direction Y1 and the second direction Y2 is the row direction of the four display units 100, and the other is the column direction of the four display units 100. This not only facilitates the symmetry of the stretching and makes the overall tensile force more evenly distributed, but also makes better use of the interval between the display units 100 to maximize the length of the connecting structure 200, thereby reducing the strain of the connecting structure 200.

[0091] refer to Figure 5 The distance L1 between the midpoint of the first bend 21 and the end of the connecting structure 200 along the reference direction X is greater than the side length L2 of the first side C1. This maximizes the length of the connecting structure 200, reduces the strain of the connecting structure 200, makes the signal lines on the connecting structure 200 less prone to breakage, and helps improve the fatigue resistance of the signal lines.

[0092] refer to Figure 7 There are two connection structures 200 between adjacent display units 100; the connection position of one end of the connection structure 200 to the first side C1 is spaced apart from both ends of the first side C1; the connection position of the other end of the connection structure 200 to the second side C2 is spaced apart from both ends of the second side C2; ​​the first bending portions 21 of the two connection structures 200 located between adjacent display units 100 are arranged far apart from each other.

[0093] In this design, there are two connecting structures 200 between adjacent display units 100. This allows the tensile force to be evenly distributed between the two connecting structures 200, preventing any single connecting structure 200 from experiencing excessive strain. With only one connecting structure 200 between adjacent display units 100, all stress is concentrated on a single path, easily leading to excessive local stress. Compared to having only one connecting structure 200 between adjacent display units 100, which distributes the same stress evenly across two paths, reducing the strain of a single connecting structure 200, even if one of the connecting structures 200 develops microcracks due to fatigue, the symmetrical other connecting structure 200 can still maintain its tensile function, delaying overall failure and enhancing the reliability of the display panel 1000.

[0094] Furthermore, the first bending portions 21 of the two connecting structures 200 located between adjacent display units 100 are positioned far apart from each other. This provides more space for the first bending portions 21 of the connecting structures 200, further increasing the radius of the first bending portions 21. Increasing the radius of the first bending portions 21 can not only effectively reduce local stress concentration but also reduce the strain of the connecting structures 200. Secondly, the far-away arrangement makes the deformation of the first bending portions 21 of each connecting structure 200 more independent, allowing the two connecting structures 200 to expand outward synchronously when the display unit 100 is subjected to stress and deformation.

[0095] refer to Figure 8 The two connecting structures 200 located between adjacent display units 100 are symmetrical about the line S connecting the centers O of the adjacent display units 100. This symmetrical design of the two connecting structures 200 can counteract asymmetrical deformation. For example, when the display panel 1000 is stretched, the symmetrical connecting structures 200 deform synchronously, preventing the display panel 1000 from twisting or tilting due to uneven stress. Therefore, this balances deformation and reduces the risk of the display panel 1000 twisting.

[0096] Continue to refer to Figure 7 The distance L3 between the midpoints of the first bends 21 of the two connecting structures 200 between adjacent display units 100 is greater than the side length L2 of the adjacent first side C1. This can extend the length of the connecting structure 200, reduce the strain of the connecting structure 200, make the signal lines on the connecting structure 200 less prone to breakage, and improve the fatigue resistance of the signal lines.

[0097] In some embodiments, references may be further incorporated. Figure 5 and Figure 6 The first extension 212 and the second extension 222 both form an angle with the center line M of the first bending portion 21, and the first extension 212 and the second extension 222 are symmetrically arranged about the center line M of the first bending portion 21. First, the fact that the first extension 212 and the second extension 222 both form an angle with the center line M of the first bending portion 21 increases the length of the connecting structure, thereby reducing the strain of the connecting structure 200. Second, the symmetrical arrangement allows the first extension 212 and the second extension 222 to balance each other under stress during stretching, preventing the bending portion from twisting or shifting due to uneven stress, ensuring that the display panel remains flat during stretching, thereby enhancing the stability of the overall structure and improving the display effect of the display panel 1000.

[0098] In some embodiments, in conjunction with reference Figure 9 and Figure 10The connecting structure 200 includes four bends 201, and the two bends 201 located in the middle of the four bends 201 are both first bends 21. The connection position between one end of the connecting structure 200 and the first side C1 is the first connection position, and the connection position between the other end of the connecting structure 200 and the second side C2 is the second connection position. The angle between the line connecting the first connection position and the second connection position and the centerline of any of the first bends 21 is an acute angle.

[0099] This increases the number of bends 201 in the connecting structure 200, which in turn increases the number of connecting parts 202, thereby increasing the overall length of the connecting structure 200. Because the connecting structure 200 has a longer overall length, when the stretching amount between multiple display parts 100 is the same, the ratio of the deformation amount of the connecting structure 200 to its original length will decrease. This results in smaller deformation of the signal lines on the connecting structure 200, making the signal lines less prone to breakage and improving their fatigue resistance.

[0100] In some embodiments, the reference continues Figure 9 and Figure 10 In the case where the connecting structure 200 includes four bends 201, and the two middle bends 201 are both first bends 21, the extension 202 connecting the two first bends 21 of the connecting structure 200 is parallel to the first side C1. This allows the bending degree of the extension 202 located between the two first bends 21 to be symmetrically distributed on both sides of the bends 201 and the extension 202, thereby making the display panel 1000 more evenly stressed during the stretching process, reducing local stress concentration, and helping to maintain the flatness of the display panel 1000, avoiding deformation or distortion of the display area caused by asymmetrical bending, thus improving the display effect. Secondly, it can also maximize the bending radius of the two middle first bends 21, improving the fatigue resistance of the connecting structure 200.

[0101] Continue to refer to Figure 9 When the connecting structure 200 includes four bends 201, the number of connecting structures 200 between adjacent display units 100 can be one; the first side C1 includes a first end D1 and a second end D2, the second side C2 includes a third end D3 and a fourth end D4, and the first end D1 and the third end D3 are symmetrical about the center line M of the first bend 21; one end of the connecting structure 200 is connected to the second end D2, and the other end of the connecting structure 200 is connected to the third end D3. In the connecting structure 200, one first bend 21 is disposed near the first end D1, and the other first bend 21 is disposed near the fourth end D4.

[0102] First, the design of the multiple bends 201 enables a longer effective stretching path within the limited space between adjacent display sections 100, thus accommodating greater deformation requirements. Second, the single connection structure 200 between adjacent display sections 100 reduces the space occupied by each structure, facilitating a more compact layout within the limited space and simplifying the overall design of the display panel 1000. This avoids mechanical interference that could occur with multiple connection structures 200, resulting in more even stress distribution during stretching. Furthermore, reducing the number of connection structures 200 lowers manufacturing complexity, thereby improving the overall reliability of the display panel 1000. Simultaneously, the reduced number of connection structures 200 simplifies signal transmission paths, reducing crossovers and interference between signal lines, and improving signal transmission stability and clarity.

[0103] When the connecting structure 200 includes four bends 201, the "symmetry" in the above statement "the first end D1 and the third end D3 are symmetrical about the center line M of the first bend 21" is not symmetrical in the strict sense. That is, the distances from the first end D1 and the third end D3 to the center line M of the first bend 21 are not equal. (See reference...) Figure 9 This simply means that the first end D1 and the third end D3 are located on opposite sides of the center line M, and their positions on opposite sides of the center line M are corresponding to each other.

[0104] In some embodiments, in conjunction with reference Figure 9 and Figure 10 When the connecting structure 200 includes four bends 201, and the number of connecting structures 200 between adjacent display sections 100 is one, along the reference direction X, the distance L4 between the midpoint of the two first bends 21 in the connecting structure 200 and the end of the connecting structure 200 is greater than the side length L1 of the first side C1. This allows for a longer effective stretching path within the limited space between adjacent display sections 100, thus providing the connecting structure 200 with a larger deformation space, enabling it to better adapt to stretching and bending. During stretching, stress can also be more evenly distributed throughout the connecting structure 200, rather than concentrated at the end of the connecting structure 200 or the edge of the display section 100, thereby reducing the risk of fatigue or fracture of the connecting structure 200 material. Secondly, the larger distance design can also buffer the direct impact of the stretching force on the side of the display section 100. The longer the redundant length that the connecting structure 200 can unfold during stretching, the higher the stretching rate can be supported. The larger distance design can also maintain the geometric stability of the bends 201, ensuring that they can return to their original shape after stretching.

[0105] In some embodiments, in conjunction with reference Figure 11 and Figure 12When the connecting structure 200 includes four bends 201, the connecting structure 200 between adjacent display sections 100 includes a first connecting structure 11 and a second connecting structure 12; the first side C1 includes a first end D1 and a second end D2, and the second side C2 includes a third end D3 and a fourth end D4. The first end D1 and the third end D3 are symmetrical about the center line M of the first bend 21; one end of the first connecting structure 11 has a gap between it and both the first end D1 and the second end D2, and the other end of the first connecting structure 11 is connected to the third end D3; one end of the second connecting structure 12 is connected to the second end D2, and the other end of the second connecting structure 12 has a gap between it and both the third end D3 and the fourth end D4.

[0106] First, when the connecting structure 200 includes four bends 201, the connecting structure 200 with multiple bends 201 can provide more degrees of freedom in deformation and adapt to complex stretching directions. Second, when the connecting structure 200 includes a first connecting structure 11 and a second connecting structure 12, the tensile or bending stress between adjacent display parts 100 will be distributed and transmitted through two paths, avoiding stress concentration on a single path and significantly reducing the risk of breakage. If one of the connecting structures 200 fails due to fatigue or damage, the other can still maintain the mechanical connection. It can also provide a backup signal path to prevent display failure caused by a single path breakage. Multi-path conductivity can reduce resistance changes during stretching and ensure the stability of the display signal. The two connecting structures 200 can also constrain the relative displacement of the display parts 100 during stretching, reducing twisting or misalignment between the display parts 100.

[0107] Similarly, when the connecting structure 200 includes four bends 201, the "symmetry" in the above statement "the first end D1 and the third end D3 are symmetrical about the center line M of the first bend 21" is not symmetrical in the strict sense. That is, the distances from the first end D1 and the third end D3 to the center line M of the first bend 21 are not equal. (See reference...) Figure 11 This simply means that the first end D1 and the third end D3 are located on opposite sides of the center line M, and their positions on opposite sides of the center line M are corresponding to each other.

[0108] In some embodiments, in conjunction with reference Figure 11 and Figure 12When the connecting structure 200 includes four bends 201, and the connecting structure 200 between adjacent display sections 100 includes a first connecting structure 11 and a second connecting structure 12, in the case of the two first bends 21 of the connecting structure 200, the distance along the reference direction X between the midpoint of one first bend 21 and the end of its adjacent connecting structure 200 is greater than half the side length L1 of the first side C1 and less than the side length L1 of the first side C1; the distance along the reference direction X between the midpoint of the other first bend 21 and the end of its adjacent connecting structure 200 is less than or equal to half the side length L1 of the first side C1.

[0109] Along the reference direction X, the distance between the midpoint and the end of one first bend 21 is greater than half the side length L1 of the first side C1, which provides more space for deformation, allowing the connecting structure 200 to better adapt to stretching and bending, and improving overall flexibility; the distance between the midpoint and the end of the other first bend 21 is less than or equal to half the side length L1 of the first side C1, which helps to maintain the stability of the connecting structure 200 during stretching and prevents excessive deformation or twisting; by optimizing the geometry of the connecting structure 200, a more compact and efficient layout can be achieved between adjacent display sections 100, reducing mechanical interference between the first connecting structure 11 and the second connecting structure 12, and also helping to reduce fatigue damage to the connecting structure 200 during stretching and extend its service life.

[0110] In some embodiments, reference Figure 11 In the case where the connecting structure 200 includes four bent portions 201, and the connecting structure 200 between adjacent display portions 100 includes a first connecting structure 11 and a second connecting structure 12, the first connecting structure 11 and the second connecting structure 12 are centrally symmetrical about the midpoint of the line S connecting the centers O of the adjacent display portions 100. This centrally symmetrical design allows the stress generated during tension or bending to be evenly distributed on the first connecting structure 11 and the second connecting structure 12, avoiding local stress concentration and thus reducing the risk of damage to the connecting structure 200. Secondly, the centrally symmetrical layout keeps the connecting structure 200 balanced under stress, preventing twisting or deformation caused by asymmetrical forces and improving the overall structural stability. Furthermore, the centrally symmetrical design allows the first connecting structure 11 and the second connecting structure 12 to work synergistically during tension, providing greater deformation space and better flexibility to adapt to more complex deformation requirements.

[0111] In some embodiments, reference Figure 13The adjacent display units 100 are a first display unit 101 and a second display unit 102. The first display unit 101 includes a first side C1, and the second display unit 102 includes a second side C2. The first side C1 and the second side C2 are arranged facing each other. The first display unit also includes a third side C3 connected to the first side C1. One end of the connecting structure 200 is connected to the third side C3, and the other end of the connecting structure 200 is connected to the second side C2. That is, the two ends of the connecting structure are located on the mutually perpendicular sides of the adjacent display units 100. This can maximize the radius of the bending portion 201, that is, maximize the length of the connecting structure 200. With the same amount of stretching among multiple display units 100, the ratio of the deformation of the connecting structure 200 to its original length will be reduced. As a result, the deformation of the signal line on the connecting structure 200 is also small, making the signal line less prone to breakage and improving the fatigue resistance of the signal line.

[0112] In some embodiments, reference Figure 13 The connection position of the connecting structure 200 and the third side C3 is close to the first side C1; the second side C2 includes a fifth end D5 close to the third side C3, and the connection position of the connecting structure 200 and the second side C2 is the fifth end D5. The connection position of the connecting structure 200 and the second side C2 is located at the end of the second side C2, which can provide a larger deformation space for the connecting structure 200, maximize the radius of the bending part 201, thereby reducing the strain of the connecting structure 200, and also enable it to better adapt to tension and bending. It can also make the layout of the connecting structure 200 and the second side C2 more compact and reduce mechanical interference.

[0113] In some embodiments, in conjunction with reference Figure 13 and Figure 14 The bending portion 201 of the connecting structure 200 includes a third bending portion 23. One end of the third bending portion 23 is connected to the display portion 100, and the extension portion 202 connected to the other end of the third bending portion 23 is a third extension portion 232. When the connecting structure 200 is in its initial state, the distance J between the centerline M of the third bending portion 23 and the third extension portion 232 gradually decreases along the reference direction X. Since the distance J between the centerline M of the third bending portion 23 and the third extension portion 232 gradually decreases along the reference direction X, the radius of the bending portion 201 can be increased, thereby increasing the length of the connecting structure 200. Because the length of the connecting structure 200 increases, when the amount of tension between multiple display portions 100 is the same, the ratio of the deformation of the connecting structure 200 to its original length will decrease. This results in a smaller deformation of the signal lines on the connecting structure 200, making the signal lines less prone to breakage and improving their fatigue resistance.

[0114] In some embodiments, reference Figure 15 The connection structure 200 between adjacent display units 100 includes a first connection structure 11 and a second connection structure 12; the adjacent display units 100 are respectively a first display unit 101 and a second display unit 102. The first display unit 101 includes a first side C1, and the second display unit 102 includes a second side C2. The first side C1 and the second side C2 are arranged facing each other; the first display unit 101 also includes a third side C3 connected to the first side C2, and the second display unit 102 also includes a fourth side C4 connected to the second side C2. The third side C3 and the fourth side C4 are respectively located on both sides of the line connecting the centers of the first display unit 101 and the second display unit 102.

[0115] In the case where the connection structure 200 between adjacent display units 100 includes a first connection structure 11 and a second connection structure 12, one end of the first connection structure 11 is connected to the third side C3, and the other end of the first connection structure 11 is connected to the second side C2; ​​one end of the second connection structure 12 is connected to the first side C1, and the other end of the second connection structure 12 is connected to the fourth side C4. This not only increases the number of connection structures 200 between adjacent display units 100, allowing tensile or bending stress between adjacent display units 100 to be distributed and transmitted through two paths, avoiding stress concentration on a single path and significantly reducing the risk of breakage; secondly, it also maximizes the bending radius of the first connection structure 11 and the second connection structure 22, providing greater deformation space for the first connection structure 11 and the second connection structure 22, thereby reducing the strain of the first connection structure 11 and the second connection structure 12 and improving the fatigue resistance of the signal line.

[0116] In some embodiments, reference Figure 11 or Figure 15 The midpoint of the line S connecting the centers O of the first display unit 101 and the second display unit 102 is the reference midpoint N. The first connecting structure 11 and the second connecting structure 12 are symmetrical about the reference midpoint N. This allows the first display unit 101 and the second display unit 102 to deform synchronously, preventing misalignment of the first display unit 101 and the second display unit 102 due to asymmetrical deformation, which would otherwise degrade the visual effect of the display panel 1000.

[0117] In some embodiments, a plurality of connection structures 200 are arranged around the display portion 100, and the plurality of connection structures 200 are centrally symmetrical about the center of the display portion 100. This allows the tensile force of the display panel 1000 during the stretching process to be evenly distributed around the display portion 100, avoiding stress concentration on one side of the display portion 100 that could lead to breakage of the connection structure 200 or the signal lines on the connection structure 200 on one side. Furthermore, the plurality of connection structures 200 surrounding the display portion 100 can cooperate with each other, allowing the display panel 1000 to be flexibly stretched in multiple directions to adapt to different stretching requirements, thereby improving the overall flexibility and adaptability of the display panel 1000.

[0118] In some embodiments, the spacing between adjacent display portions 100 of the display panel 1000 is equal. This allows the tensile force to be distributed more evenly among the display portions 100 when the display panel 1000 is stretched, preventing excessive pressure on certain display portions 100 and thus avoiding distortion or deformation of the display panel 1000. Secondly, during the stretching process, all display portions 100 of the display panel 1000 can deform synchronously, ensuring display quality and making the image transition on the display panel 1000 more natural during the stretching process.

[0119] In some embodiments, the width of the connecting structure 200 is equal along its extending direction, and the width of the connecting structure 200 is the dimension of the connecting structure 200 perpendicular to its extending direction. This allows the connecting structure 200 to deform uniformly when the display panel 1000 is stretched, preventing stress concentration caused by uneven width. This uniform deformation characteristic enables the connecting structure 200 to better maintain its functionality and reliability during long-term use, thereby extending the overall service life of the display panel 1000.

[0120] Will Figure 1 The display panel 1000 shown was subjected to a tensile test, with a stretch of 20%. After 10,000 stretches, the connection structure was found to have cracks during the tensile process. A detailed diagram of the cracks after the stretching can be found in the image. Figure 16 or Figure 17 .

[0121] Will Figure 5 The display panel 1000 shown was subjected to a tensile test, with a stretch of 20%. The test verified that after 10,000 stretches, the maximum strain of its connecting structure 200 was 4.22%. Specific structural data after stretching can be found in [reference needed]. Figure 18 Crack diagrams from tensile tests can be referenced. Figure 19 or Figure 20 Microscopic examination revealed no obvious cracks.

[0122] Will Figure 3 The display panel 1000 shown was subjected to a tensile test. When the tensile amount reached 20%, the test verified that the maximum strain of its connecting structure 200 was 5.55%. Specific structural data after tensile testing can be found here. Figure 21 .

[0123] exist Figure 3 In the display panel 1000 shown, in conjunction with the reference Figure 4 The width of the connecting structure 200 is W, and the distance between adjacent display sections 100 is H. Therefore, the distance Gap1 between the side of the display section 100 and its adjacent extension 202 is (H-3W) / 4, and the bending radius of the bent section 201 is Gap1 / 2, which is (H-3W) / 8. The minimum spacing Gap2 between the bent sections 201 is the minimum width achievable by the etching process, approximately 5μm to 8μm, for example, 5μm, 6μm, 7μm, or 8μm.

[0124] exist Figure 9 In the display panel 1000 shown, the distance Gap1 between the side of the display section 100 and its adjacent extension 202 is shortened to about 5μm, so that one end of the connecting structure 200 is closer and the bending radius of the bending section 201 is increased, so as to increase the radius of the bending section. At the same time, the minimum spacing Gap2 between the bending sections 201 is kept to a minimum size, that is, about 5μm. Taking the distance H between adjacent display sections 100 as 223.5μm and the width W of the connecting structure 200 as 50μm as an example, the bending radius of the bending section 201 can be increased from 9.2μm to 15.5μm, an increase of about 68.48%. As a result, the total length of the connecting structure 200 can be increased. Since the length of the connecting structure 200 is increased, the ratio of the deformation of the connecting structure 200 to its original length will decrease when the stretching amount between multiple display units 100 is the same. This results in a smaller deformation of the signal lines on the connecting structure 200, which makes the signal lines less prone to breakage and improves the fatigue resistance of the signal lines.

[0125] Will Figure 9 The display panel 1000 shown was subjected to a tensile test. When the tensile amount reached 20%, the test verified that the maximum strain of its connecting structure 200 was 5.19%. Specific structural data after tensile testing can be found here. Figure 22 For detailed structural data after stretching, please refer to [reference needed]. Figure 18 Crack diagrams from tensile tests can be referenced. Figure 23 .

[0126] Will Figure 9 The display panel 1000 shown is Figure 3Compared to the display panel 1000 shown, after increasing the radius of the bending portion 201, the strain decreased from 5.55% to 5.19%. Figure 9 The display panel 1000 shown is Figure 5 Compared to the display panel 1000 shown, Figure 5 The connecting structure 200 includes three bends 201, which are more than Figure 9 The radius of the bending portion 201 of the display panel 1000 is larger, further reducing the strain of the connecting structure 200 to 4.22%. This demonstrates that, with the same width, thickness, and length of the connecting structure 200, increasing the radius of curvature of the bending portion 201 effectively reduces stress and further improves the reliability of the connecting structure under tension.

[0127] Embodiments of this disclosure also provide a display device 3000, see reference. Figure 24 It includes: the display panel 1000 described in any of the above embodiments; and the circuit board 2000. The circuit board 2000 is coupled to the display panel 1000.

[0128] The circuit board 2000 is used to input various signals required for displaying images into the display panel 1000, such as control signals, power supply voltage signals, and data signals.

[0129] The aforementioned display device 3000 can be any device that displays either moving (e.g., video) or fixed (e.g., still image) content, and whether it is text or image content.

[0130] For example, the display device 3000 can be any product or component with display function, such as a stretchable laptop, tablet, personal digital assistant (PDA), mobile phone, watch, clock, calculator, GPS receiver / navigator, camera, camera view display (e.g., a rearview camera display in a vehicle), wearable device, augmented reality (AR) device, virtual reality (VR) device, in-vehicle display, or flight display.

[0131] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A display panel, characterized by, The display device comprises: a plurality of display parts separated from each other; a connecting structure between and connecting adjacent display parts; wherein the connecting structure comprises: alternatingly connected bending parts and extending parts, the number of the bending parts is at least three, each extending part is between adjacent bending parts, and the bending directions of adjacent bending parts are opposite; in the case that the connecting structure is in an initial state, at least one bending part and an extending part connected to one end of the bending part in the connecting structure meet the following condition: along a reference direction, the distance between the center line of the bending part and the extending part gradually decreases; the center line of the bending part is a straight line along the radial direction of the bending part and passing through the midpoint of the bending part, and the reference direction is along the center line of the bending part and from the midpoint of the bending part to the end of the extending part away from the bending part.

2. The display panel of claim 1, wherein, The bending parts comprise a first bending part, and the extending parts connected to the two ends of the first bending part are a first extending part and a second extending part, respectively; in the case that the connecting structure is in the initial state, along the reference direction, the distance between the center line of the first bending part and the first extending part gradually decreases, and the distance between the center line of the first bending part and the second extending part gradually decreases.

3. The display panel of claim 2, wherein, The bending parts further comprise a second bending part, one end of the second bending part is connected to the side edge of the display part, and the other end of the second bending part is connected to the first bending part through the extending part; one connecting structure comprises two second bending parts, and the two second bending parts are located at the two ends of the connecting structure, respectively.

4. The display panel of claim 2, wherein, The adjacent display parts are a first display part and a second display part, respectively, the first display part comprises a first side edge, the second display part comprises a second side edge, and the first side edge and the second side edge are arranged to face each other; the two ends of the connecting structure are connected to the first side edge and the second side edge, respectively.

5. The display panel of claim 4, wherein, The connecting structure comprises three bending parts, and the bending part located in the middle is the first bending part; the connection position of one end of the connecting structure to the first side edge and the connection position of the other end of the connecting structure to the second side edge are symmetrical about the center line of the first bending part.

6. The display panel of claim 5, wherein, The number of the connecting structure between adjacent display parts is one; the first side edge comprises a first end and a second end, the second side edge comprises a third end and a fourth end, the first end and the third end are symmetrical about the center line of the first bending part, one end of the connecting structure is connected to the first end, and the other end of the connecting structure is connected to the third end; the first bending part of the connecting structure is arranged close to the second end and the fourth end.

7. The display panel of claim 6, wherein, The plurality of display parts comprises a plurality of repeating units, each repeating unit comprises four display parts arranged in a 2x2 array, and four connecting structures are connected between the four display parts. The first bending portions of the connection structures adjacent in the first direction are arranged to be close to each other, and the first bending portions adjacent in the second direction are arranged to be away from each other; one of the first direction and the second direction is the row direction of the four display parts, and the other is the column direction of the four display parts.

8. The display panel of claim 6, wherein, The distance between the midpoint of the first bending portion and the end of the connection structure in the reference direction is greater than the side length of the first side.

9. The display panel of claim 5, wherein, The number of the connection structures between adjacent display parts is two. The connection position of one end of the connection structure and the first side has a spacing from both ends of the first side, and the connection position of the other end of the connection structure and the second side has a spacing from both ends of the second side. The first bending portions of the two connection structures between adjacent display parts are arranged to be away from each other.

10. The display panel of claim 8, wherein, The two connection structures between adjacent display parts are symmetric about the connecting line of the centers of the adjacent display parts.

11. The display panel of claim 9 or 10, wherein, The distance between the midpoints of the first bending portions of the two connection structures between adjacent display parts is greater than the side length of the adjacent first side.

12. The display panel according to any one of claims 5 to 10, characterized in that, The first extension and the second extension form an included angle with the midline of the first bending portion, and the first extension and the second extension are symmetrically arranged about the midline of the first bending portion.

13. The display panel of claim 4, wherein, The connection structure includes four bending portions, and the two bending portions in the middle of the four bending portions are the first bending portions. The connection position of one end of the connection structure and the first side is the first connection position, the connection position of the other end of the connection structure and the second side is the second connection position, and the included angle between the connecting line of the first connection position and the second connection position and the midline of any first bending portion is an acute angle.

14. The display panel of claim 13, wherein, The number of the connection structures between adjacent display parts is one. The first side includes a first end and a second end, and the second side includes a third end and a fourth end, and the first end and the third end are symmetric about the midline of the first bending portion. One end of the connection structure is connected to the second end, and the other end of the connection structure is connected to the third end. In the connection structure, one first bending portion is arranged close to the first end, and the other first bending portion is arranged close to the fourth end.

15. The display panel of claim 14, wherein, In the reference direction, the distance between the midpoint of the two first bending portions in the connection structure and the end of the connection structure is greater than the side length of the first side.

16. The display panel of claim 13, wherein, The connection structure between adjacent display parts includes a first connection structure and a second connection structure. The first side includes a first end and a second end, and the second side includes a third end and a fourth end, and the first end and the third end are symmetric about the midline of the first bending portion; one end of the first connection structure has a spacing from the first end and the second end, and the other end of the first connection structure is connected to the third end. One end of the second connection structure is connected to the second end, and the other end of the second connection structure has a spacing from the third end and the fourth end.

17. The display panel of claim 16, wherein, The distance between the midpoint of one of the first bending portions and the end of the connecting structure adjacent to the midpoint along the reference direction is greater than half the length of the first side and less than the length of the first side. The distance between the midpoint of the other of the first bending portions and the end of the connecting structure adjacent to the midpoint along the reference direction is less than or equal to half the length of the first side. The first connecting structure and the second connecting structure are centrally symmetric about the midpoint of the center line of the adjacent display portions.

18. The display panel of claim 16, wherein, The extension between the two first bending portions of the connecting structure is parallel to the first side.

19. The display panel of any one of claims 13-18, wherein, The adjacent display portions are a first display portion and a second display portion, respectively, the first display portion includes a first side, the second display portion includes a second side, and the first side and the second side are arranged to face each other.

20. The display panel of claim 2 or 3, wherein, One end of the connecting structure is connected to the third side, and the other end of the connecting structure is connected to the second side. The connecting position of the connecting structure and the third side is close to the first side.

21. The display panel of claim 20, wherein, The second side includes a fifth end close to the third side, and the connecting position of the connecting structure and the second side is the fifth end. The bending portion includes a third bending portion, one end of the third bending portion is connected to the display portion, and the extension connected to the other end of the third bending portion is a third extension.

22. The display panel of claim 1, wherein, In the case where the connecting structure is in an initial state, the distance between the center line of the third bending portion and the third extension gradually decreases along the reference direction. The connecting structure between the adjacent display portions includes a first connecting structure and a second connecting structure.

23. The display panel of claim 22, wherein, The adjacent display portions are a first display portion and a second display portion, respectively, the first display portion includes a first side, the second display portion includes a second side, and the first side and the second side are arranged to face each other. The first connecting structure includes a third side connected to the first side, and the second connecting structure includes a fourth side connected to the second side. The first connecting structure includes a third side connected to the first side, and the second connecting structure includes a fourth side connected to the second side. The midpoint of the center line of the first display portion and the second display portion is a reference midpoint, and the first connecting structure and the second connecting structure are centrally symmetric about the reference midpoint.

24. The display panel of claim 23, wherein, A plurality of the connecting structures are arranged around the display portion and are centrally symmetric about the center of the display portion.

25. The display panel of any one of claims 1-10, wherein, The display panel includes:

26. A display device comprising: The display panel according to any one of claims 1-25; and The circuit board is coupled with the display panel. ​

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