Display panel and display device

Abstract

The application discloses a display panel and a display device, the display panel comprises a screen body, the screen body comprises a main body part and a bending part, the bending part comprises an electric connection layer and a metal wiring layer, the electric connection layer covers the metal wiring layer, and the metal wiring layer is formed with metal wiring; when the metal wiring is in a broken state, the metal wiring is formed with a plurality of separated wiring parts, and the plurality of wiring parts are electrically connected through the electric connection layer. Compared with the prior art, the electric connection layer is covered on the metal wiring, when the screen body is in a bending state, the bending part is extruded by external force, the electric connection layer provides stress buffering, the metal wiring in the bending part is not easy to break and deform, and if the metal wiring is broken and in a broken state, the electric connection layer can replace the metal wiring to transmit signals, so that the normal signal transmission can be ensured after the metal wiring is broken, and the related problems such as bright lines and abnormal display caused by the breaking of the bending part are avoided.

Description

Technical Field

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

[0002] The existing display panel structure has the following problems: when bending the non-display area of ​​the display panel, the bending radius is uncontrollable, which poses a risk of undesirable stretching of the screen. In addition, the bending area cannot maintain a fixed bending state. There are a lot of metal wires in the bending area, which can break when subjected to external pressure, resulting in the inability to transmit screen signals normally, producing defects such as bright lines, abnormal display, and abnormal touch. Summary of the Invention

[0003] The purpose of this invention is to provide a display panel and display device to solve the technical problems in the prior art, which can still transmit signals normally after the metal wire is broken.

[0004] In a first aspect, the present invention provides a display panel, including a screen body, the screen body including a main body and a bent portion, the main body being connected to the bent portion, the screen body having a non-bent posture and a bent posture, the screen body having a non-bent posture and a bent posture, the main body and the bent portion having the same extension direction when the screen body is in the non-bent posture, the bent portion having an arc-shaped extension, the bent portion having an electrical connection layer and a metal trace layer, the electrical connection layer covering the metal trace layer, the electrical connection layer being further away from the main body than the metal trace layer, the metal trace layer having a broken posture, the metal trace ...

[0005] In the display panel described above, preferably, the bent portion is provided with a plurality of insulating protrusions, the plurality of insulating protrusions intersect to form a grid structure, the grid structure has a plurality of first cavities, each of the first cavities is provided with the electrical connection layer and the metal trace layer, and the metal trace extends sequentially through the plurality of first cavities along a preset direction.

[0006] In the display panel described above, preferably, each of the insulating protrusions has a second cavity formed therein, and each of the second cavities is provided with the electrical connection layer and the metal trace layer, the metal traces extending sequentially through the second cavity.

[0007] In a display panel as described above, preferably, the electrical connection layer includes a conductive adhesive layer and an adhesive film layer stacked on top of each other. When the metal trace is in the broken state, the trace separates and extends into the conductive adhesive layer after passing through the adhesive film layer.

[0008] In a display panel as described above, preferably, an assembly cavity is formed within the metal trace layer, the assembly cavity has an opening on the side facing the conductive adhesive layer, and the metal trace is housed within the assembly cavity.

[0009] In a display panel as described above, preferably, the electrical connection layer covers only the metal traces.

[0010] In a display panel as described above, preferably, the side of the electrical connection layer opposite to the metal trace layer is covered with a protective film layer.

[0011] In the display panel described above, preferably, the main body includes a first main body and a second main body, the first main body and the second main body are connected by the bending portion, the first main body is provided with a first support portion, and the second main body is provided with a second support portion. When the screen is in the bending posture, the first main body and the second main body are parallel, and the first support portion and the second support portion abut against each other.

[0012] In the display panel described above, it is preferred that the materials of the first support portion and the second support portion are polyethylene terephthalate or polycarbonate.

[0013] Secondly, the present invention provides a display device including the aforementioned display panel.

[0014] Compared with the prior art, the display panel provided by the present invention has an electrical connection layer covering the metal traces. When the screen is in a bent state, the bent part is squeezed by external force. The electrical connection layer provides stress buffer, making the metal traces in the bent part less prone to breakage and deformation. Furthermore, if the metal trace breaks, the electrical connection layer can replace the metal trace for signal transmission, ensuring that the signal can still be transmitted normally after the metal trace breaks. This avoids related problems such as bright lines and abnormal display caused by the breakage of the bent part. Attached Figure Description

[0015] Figure 1 This is a partial schematic diagram of the display panel provided in an embodiment of the present invention;

[0016] Figure 2 This is a partial cross-sectional view of the bent portion provided in an embodiment of the present invention;

[0017] Figure 3This is a partial schematic diagram of the electrical connection layer and the metal trace layer provided in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the display device provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 10-Screen body, 11-Main body, 111-First main body, 112-Second main body, 12-Bending part, 121-Insulating protrusion, 122-First cavity, 123-Second cavity, 13-Metal wiring layer, 131-Assembly cavity, 14-Metal wiring, 15-Electrical connection layer, 151-Conductive adhesive layer, 152-Adhesive film layer, 16-Protective film layer, 17-First support part, 18-Second support part;

[0021] 100 - Display device. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the display panel of this application will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit this application.

[0023] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower level than the second feature.

[0025] Modern display devices (such as mobile phones and tablets) are increasingly pursuing narrow bezels and high screen-to-body ratios to provide a better visual experience and a more compact appearance. Narrow bezel designs can reduce the size of the device while increasing the screen's proportion on the front of the device, enhancing the user's visual immersion.

[0026] To achieve narrow bezels and a high screen-to-body ratio, a common technique is to use a bendable display panel. By bending the non-display area (the bent portion) of the display panel backward, part of the non-display area can be hidden, thereby reducing the bezel width.

[0027] As described in the background section, in the prior art, when bending the non-display area of ​​the display panel, the bending radius is uncontrollable, which poses a risk of undesirable stretching of the screen. Furthermore, the bending area cannot maintain a fixed bending state, and the bending area contains a large number of metal wires. When subjected to external pressure, the metal wires may break, causing the screen signal to fail to transmit normally, resulting in defects such as bright lines, abnormal display, and abnormal touch.

[0028] The inventors discovered that the problem stems from the fact that the bending area of ​​traditional screens is hollow, and the curved area after bending has no supporting structure. This makes it impossible for the bending area to maintain a stable bending radius, and even causes dead bends, which can easily lead to breakage and deformation of the bending area. Furthermore, since there are a large number of metal wires in the bending area, the presence of dead bends can easily cause these metal wires to break, affecting the display effect of the display panel and reducing its reliability.

[0029] In response to the above issues, such as Figures 1 to 3 As shown, an embodiment of the present invention provides a display panel, which includes a screen body 10. The screen body 10 includes a main body 11 and a bending part 12. The main body 11 and the bending part 12 are connected. The main body 11 is the display area of ​​the display panel, which is used to display images and videos and other content. The bending part 12 is the non-display area of ​​the display panel, which is mainly used to hide non-display functional parts such as circuits and wiring.

[0030] The main body may include a driving backplate and an Organic Light-Emitting Diode (OLED) structural layer. The driving backplate is disposed on a flexible substrate, and the OLED structural layer is disposed on the side of the driving backplate away from the flexible substrate. The driving backplate may include a thin-film transistor array, which controls the current flowing into each OLED pixel. The OLED structural layer may include, from bottom to top, a first electrode, a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, an electron injection layer, and a second electrode, wherein the first electrode may be an anode and the second electrode may be a cathode. Electrons and holes are injected from the cathode and anode into the electron injection layer and hole injection layer, respectively, and migrate to the light-emitting layer through the electron transport layer and hole transport layer, respectively. After recombination in the light-emitting material layer, the light-emitting material emits light.

[0031] The screen 10 has both a non-bent posture and a bent posture. When the screen 10 is in the non-bent posture, the main body 11 and the bending portion 12 extend in the same direction. When the screen 10 is in the bent posture, the screen 10 can bend in the area where the bending portion 12 is located. When the screen 10 is in the bent posture, the bending portion 12 of the display panel bends away from the light-emitting surface of the display panel, so that the bending portion 12 does not affect the front display effect of the display panel, and at the same time, it can hide the non-display area and reduce the bezel width. The bending portion 12 extends along an arc to form a racetrack-shaped structure. As the screen 10 bends, the radius of curvature of the bending portion 12 changes accordingly.

[0032] The bending section 12 includes an electrical connection layer 15 and a metal trace layer 13, with the electrical connection layer 15 covering the metal trace layer 13. The metal trace layer 13 is used to transmit electrical signals. The metal trace layer 13 has good flexibility to adapt to the arc extension and changes in the bending radius of the bending section. The electrical connection layer 15 is made of conductive material. If the metal trace 14 within the metal trace layer 13 breaks during bending of the screen 10, the electrical connection layer 15 can take over the function of the metal trace 14, ensuring the stability of the circuit during bending.

[0033] In one feasible implementation, the electrical connection layer 15 and the metal wiring layer 13 are preferably fixed by bonding. The bonding material is typically an adhesive layer with high flexibility and good adhesion, such as a UV-curable adhesive, which not only provides sufficient bonding strength but also maintains stability during bending. The adhesive layer formed after UV curing has a certain degree of elasticity and flexibility, which can reduce the stress fluctuation effect on the electrical connection layer 15 when the bending portion 12 is bent.

[0034] When the screen 10 is in a bent state, the electrical connection layer 15 is located on the outside of the metal trace layer 13, that is, on the side away from the main body 11. The electrical connection layer 15, attached to the metal trace layer 13, provides stress buffering, thus controlling the bending radius of the metal trace layer 13 and maintaining a stable bending radius. This prevents uncontrolled bending deformation of the metal trace layer 13 and avoids deformation or breakage due to excessive bending. By controlling the bending radius of the metal trace layer 13 and ensuring stable signal transmission, the electrical connection layer 15 improves the overall performance and reliability of the display panel. Furthermore, the electrical connection layer 15 has a conductive function, enabling electrical connection for signal transmission. In the bent portion 12 of the display panel, the conductive function of the electrical connection layer 15 ensures stable signal transmission of the metal trace layer 13 during bending, preventing interruption or distortion due to bending.

[0035] Metal traces 14 are formed within the metal trace layer 13. The metal traces 14 are used to realize electrical connections between two components to stably transmit signals and are a key structure for realizing electrical connections between components. The width and thickness of the metal traces 14 need to be optimized according to the requirements of signal transmission. Wider traces can reduce resistance but will occupy more space; thicker traces can improve mechanical strength but will increase manufacturing costs.

[0036] Due to frequent bending operations, the metal trace 14 may break during the bending process of the screen body 10 due to repeated mechanical stress, thus causing the metal trace 14 to be in a broken state. When the metal trace 14 is in a broken state, the metal trace 14 has multiple phase-separated trace segments, which extend into the electrical connection layer 15. The electrical connection layer 15 is used to electrically connect the multiple phase-separated trace segments.

[0037] In some feasible implementations, when the metal trace 14 breaks, the electrical connection layer 15 can fill the break with its conductive material to restore the electrical connection. The electrical connection layer 15 can also employ microcapsule technology. The microcapsules store liquid metal or other conductive materials. When the metal trace 14 breaks, the microcapsules rupture, releasing the conductive material to fill the break in the metal trace 14 and restore the electrical connection.

[0038] In the embodiments provided in this application, the electrical connection layer 15 reconnects these separated traces through its conductivity, ensuring the integrity of the circuit and restoring electrical connection. The electrical connection layer 15 can replace the metal trace 14 for signal transmission, effectively preventing signal transmission interruption caused by the breakage of the metal trace 14, thereby ensuring normal signal transmission and avoiding related problems such as bright lines and abnormal display caused by the breakage of the bend 12. Preferably, the electrical connection layer 15 can not only replace the metal trace 14 for signal transmission when it breaks, but also assist in signal transmission under normal conditions, further improving the stability of signal transmission.

[0039] In the embodiments provided by the present invention, the metal trace layer 13 has multiple metal traces 14. If at least two metal traces 14 break, the traces of different metal traces 14 are connected together using a single electrical connection layer 15, which may cause signal crosstalk. To avoid mutual interference between multiple metal traces 14 through the electrical connection layer 15, resulting in signal transmission chaos, a feasible embodiment refers to... Figure 2 As shown, Figure 2 for Figure 1 In the AA-direction cross-sectional view, the bent portion 12 is provided with multiple insulating protrusions 121. The insulating protrusions 121 are made of materials with good insulation properties and strength, such as silicon nitride (Si3N4) or polyimide (PI). This ensures stability and reliability during the bending process. The function of the insulating protrusions 121 is to divide the completed electrical connection layer 15 into multiple independent parts, with different electrical connection layers 15 complementing each other and preventing interference.

[0040] Multiple insulating protrusions 121 include laterally extending portions and longitudinally extending portions, thereby intersecting to form a grid-like or honeycomb structure. The grid-like structure provides additional mechanical support, enhancing the structural stability of the bent portion 12. During bending, the grid-like structure can reduce stress concentration and lower the risk of metal trace 14 breakage. The grid-like structure has several first cavities 122, each of which is provided with an electrical connection layer 15 and a metal trace layer 13.

[0041] The electrical connection layer 15 is divided into several independent units, allowing each electrical connection layer 15 within the first cavity 122 to operate independently. Metal traces 14 extend sequentially through multiple first cavities 122 along a predetermined direction, ensuring that each metal trace 14 has an independent electrical connection path and can transmit signals independently. Even if a metal trace 14 breaks, the resulting trace fragments are electrically connected using the electrical connection layer 15 within the first cavity 122 at the break point. This effectively prevents signal transmission interruption due to metal trace breakage, ensuring normal signal transmission. It also effectively isolates the electrical connection layer 15 and metal trace layer 13 within each first cavity 122, preventing signal interference between multiple metal traces 14. This avoids crosstalk and interference between signals, ensuring the integrity and stability of signal transmission.

[0042] In other feasible embodiments, the plurality of insulating protrusions 121 may also extend in one direction, with a preset gap maintained between adjacent insulating protrusions 121, and the first cavity 122 is formed between two adjacent insulating protrusions 121. Those skilled in the art will know that the pattern formed by the insulating protrusions 121 can be determined according to actual needs, as long as it can ensure that the electrical connection layers 15 in adjacent first cavities 122 remain independent of each other, and no limitation is made here.

[0043] Each first cavity 122 contains at most one metal trace 14, and each metal trace 14 operates within an independent first cavity 122, avoiding physical contact and signal interference between multiple metal traces 14. If a metal trace 14 breaks, at least two resulting trace components will be electrically connected through an electrical connection layer 15 within the first cavity 122, ensuring the continuity of signal transmission, while the electrical connection layers 15 in other first cavities 122 will not interfere. This localized repair mechanism is limited to the first cavity 122 where the break occurred and will not affect the metal traces 14 in other first cavities 122, thereby avoiding crosstalk and interference between signals and ensuring the integrity and stability of signal transmission.

[0044] By placing the metal traces 14 in different first cavities 122 and dividing the electrical connection layer 15 into multiple mutually insulated and independent parts, the electrical connection layer 15 is used to achieve electrical connection after breakage. This effectively avoids mutual interference between multiple metal traces 14 through the electrical connection layer 15, thereby ensuring the stability of signal transmission. Even if the metal traces 14 break during bending, the electrical connection layer 15 can still maintain signal transmission, significantly improving the reliability of the display panel.

[0045] An insulating protrusion 121 has a through groove formed therein, which extends laterally through the insulating protrusion 121 and connects the metal trace layers 13 in the two first cavities 122. The through groove is used to allow a single metal trace 14 to pass through. The inner diameter of the through groove is adapted to the outer diameter of the metal trace 14. Only the metal trace layer 13 is provided in the through groove, and there is no electrical connection layer 15, thereby preventing the electrical connection layers 15 in adjacent first cavities 122 from being electrically connected to each other. The insulating protrusion 121 can also provide a fixing point for the metal trace 14. Multiple insulating protrusions 121 are provided in the extension direction of the metal trace 14. With the reinforcement of the insulating protrusions 121, the location and extent of the breakage of the metal trace 14 can be effectively controlled, and the damage to the metal trace 14 caused by bending can be reduced.

[0046] Furthermore, to prevent signal transmission from being impossible through the electrical connection layer 15 after the metal trace 14 within the insulating protrusion 121 breaks, the embodiments provided by the present invention further subdivide the internal structure of the insulating protrusion 121, providing an independent channel and repair mechanism for each metal trace 14, as shown in the figure. Figure 2 As shown, each insulating protrusion 121 has a second cavity 123 formed therein. The volume of the second cavity 123 can occupy most of the inner area of ​​the insulating protrusion 121, so that the transverse wall thickness of the insulating protrusion 121 is small, and it is connected to the second cavity 123 through a groove.

[0047] Each second cavity 123 is provided with an electrical connection layer 15 and a metal trace layer 13, with metal traces 14 extending sequentially through the second cavity 123. At most one metal trace 14 passes through each second cavity 123. If a metal trace 14 within the insulating protrusion 121 breaks, at least two resulting trace components will be electrically connected through the electrical connection layer 15 within the second cavity 123. This local repair mechanism is limited to the second cavity 123 where the breakage occurred and will not affect the metal traces 14 in other second cavities 123.

[0048] By providing a second cavity 123 within the insulating protrusion 121, the phenomenon that the signal transmission cannot be restored through the electrical connection layer 15 after the metal trace 14 within the insulating protrusion 121 breaks can be effectively avoided, thereby ensuring the stability of the signal transmission of the metal trace 14. Even if the metal trace 14 within the insulating protrusion 121 breaks during bending, the electrical connection layer 15 can be used to achieve electrical connection after the breakage, and the electrical connection layer 15 can still maintain signal transmission, significantly improving the reliability of the display panel.

[0049] In one feasible embodiment, the electrical connection layer 15 includes a conductive adhesive layer 151 and an adhesive film layer 152 stacked in phase. The conductive adhesive layer 151 and the adhesive film layer 152 can be bonded together to form a composite structure, which combines the conductivity of the conductive adhesive layer 151 and the mechanical support capability of the adhesive film layer 152, providing good electrical connection and structural stability.

[0050] The main function of the conductive adhesive layer 151 is to provide a conductive path and ensure the continuity of signal transmission. The conductive adhesive layer 151 is a conductive adhesive material with good conductivity and flexibility, such as silver paste or conductive silicone.

[0051] When the screen 10 is in a bent position, the conductive adhesive layer 151 is closer to the outer side of the screen 10 than the adhesive film layer 152. The adhesive film layer 152 is an adhesive material with high bonding strength and good insulation properties to protect the metal traces 14 and prevent short circuits. The materials used for the adhesive film layer 152 are selected from the following: modified epoxy resins, acrylics, modified rubbers, and modified thermoplastic polyimides. The adhesive film layer 152 can be bonded to the metal trace layer 13, providing additional mechanical support and stability. The adhesive film layer 152 also has an insulating function, preventing short circuits between the conductive adhesive layer 151 and surrounding materials.

[0052] In one feasible implementation, conductive particles (such as silver, copper, carbon nanotubes, etc.) are distributed within the conductive adhesive layer 151, forming conductive pathways through physical contact. When the volume fraction of the conductive filler reaches a certain threshold (percolation threshold), a continuous network structure is formed between the conductive particles, thereby enabling the conductive particles to form a chain structure during the curing process. Electrons move through these chain structures, achieving current conduction.

[0053] In another feasible implementation, conductive particles form conductive pathways through the tunneling effect. When the distance between conductive particles is very close, less than 10 nanometers, a strong electric field can induce electron emission, thereby achieving conductivity. Even if there are thin insulating layers between conductive particles, electrons can still pass through these insulating layers to form conductive pathways.

[0054] Under normal conditions, the metal trace 14 does not contact the conductive adhesive layer 151. The metal trace 14 achieves its electrical connection function on its own, ensuring that it can efficiently transmit signals without interference from the conductive adhesive layer 151 under normal operating conditions. The conductive adhesive layer 151 does not participate in signal transmission under normal operating conditions. However, if the metal trace 14 breaks, the separated trace components will enter the conductive adhesive layer 151. The conductive adhesive layer 151 can then use its conductivity to achieve an electrical connection between the broken parts, thereby restoring signal transmission.

[0055] When the metal trace 14 within the bend portion 12 is bent and broken due to the bending of the screen body 10, the metal trace 14 will split into multiple separate trace segments, with one end of each segment curling up. These curled-up segments will puncture the adhesive film layer 152 and enter the conductive adhesive layer 151. The conductive adhesive layer 151, through its conductivity, will reconnect these separated trace segments, ensuring circuit integrity. The conductive adhesive layer 151 replaces the metal trace 14 for signal transmission, effectively preventing signal transmission interruption caused by the breakage of the metal trace 14, thus ensuring normal signal transmission and avoiding related problems such as bright lines and abnormal display caused by the breakage of the bend portion 12.

[0056] By setting the electrical connection layer 15 as a composite structure of conductive adhesive layer 151 and adhesive film layer 152, the metal trace 14 operates independently under normal operating conditions, resulting in efficient and stable signal transmission. In extreme cases, the conductive adhesive layer 151 can quickly take over signal transmission, preventing signal interruption and forming a "backup" mechanism to ensure that signal transmission can continue even if the main conductive path fails.

[0057] Furthermore, to ensure that the free end of the metal trace 14 can smoothly enter the conductive adhesive layer 151 after bending and breaking, such as... Figure 3 As shown, an assembly cavity 131 is formed in the metal trace layer 13. The assembly cavity 131 has an opening on the side facing the conductive adhesive layer 151. The metal trace 14 is housed in the assembly cavity 131. The projection of the metal trace 14 in the thickness direction of the metal trace layer 13 falls within the opening. This opening design allows the free end of the metal trace 14 to smoothly enter the conductive adhesive layer 151 after it breaks.

[0058] The assembly cavity 131 provides physical protection for the metal traces 14, preventing them from being damaged by external factors during normal operation. The metal traces 14 operate independently within the assembly cavity 131, without direct contact with the conductive adhesive layer 151, thus reducing signal interference. When the screen 10 bends, causing the metal traces 14 to break, the broken trace pieces do not need to puncture the metal trace layer 131; instead, they can enter the conductive adhesive layer 151 through the opening. The conductive adhesive layer 151, through its conductivity, reconnects these separated trace pieces, ensuring circuit integrity and preventing issues such as bright lines and abnormal displays caused by broken metal traces 14.

[0059] In one feasible embodiment, the electrical connection layer 15 covers only the metal trace 14, and the electrical connection layers 15 at other locations on the bend 12 are etched away, leaving only the electrical connection layer 15 at the location of the metal trace 14. The projection of the electrical connection layer 15 in the thickness direction falls on the metal trace 14. Those skilled in the art can use dry etching methods, such as reactive ion etching (RIE) or deep reactive ion etching (DRIE), to etch away other parts of the electrical connection layer 15, thereby providing good etching control and uniformity, ensuring that the electrical connection layer 15 remains only at the location of the metal trace 14.

[0060] By covering the electrical connection layer 15 only on the metal trace 14, the potential interference of the electrical connection layer 15 in other areas of the bend 12 to signal transmission can be reduced. The partially covered electrical connection layer 15 can more precisely protect the metal trace 14. When the metal trace 14 breaks, the conductive adhesive layer 151 can quickly take over the signal transmission, avoid signal interruption, ensure the reliability of the display panel, and reduce material usage and manufacturing costs.

[0061] In one feasible implementation, refer to Figure 2 As shown, the side of the electrical connection layer 15 facing away from the metal trace 14 is covered with a protective film layer 16, which can not only effectively prevent contamination from external impurities, but also improve the reliability and service life of the entire display panel. The protective film layer 16 includes a PPS film layer, a PEN film layer, a polyester film layer, a polyimide film layer, a film layer formed after curing epoxy resin ink, a film layer formed after curing polyurethane ink, a film layer formed after curing modified acrylic resin, or a film layer formed after curing polyimide resin.

[0062] In the embodiments provided by the present invention, reference is made to Figure 1 As shown, the main body 11 includes a first main body 111 and a second main body 112. The first main body 111 and the second main body 112 are connected by a bending portion 12. The first main body 111 is provided with a first support portion 17, and the second main body 112 is provided with a second support portion 18. The structure and size of the first support portion 17 and the second support portion 18 can be the same. When the screen body 10 is in a bent state, the first main body 111 and the second main body 112 are parallel, and the first support portion 17 and the second support portion 18 abut against each other. The bending portion 12 forms a curved extension. The first support portion 17 and the second support portion 18 are close together to effectively support the screen body 10, preventing the screen body 10 from being damaged due to bending stress or external impact. It can also effectively ensure the stability of the bending state of the bending portion 12. When the bending portion 12 is bent, its bending radius is precisely controlled to avoid undesirable stretching of the display panel and to keep the bending portion 12 in a fixed bending state, thereby improving the reliability of the display panel.

[0063] In one feasible implementation, the first support portion 17 and the second support portion 18 are respectively disposed only at local positions of the first main body portion 111 and the second main body portion 112. When the screen body 10 is not in a bent state, the first support portion 17 and the second support portion 18 are located in the same plane, and neither the first support portion 17 nor the second support portion 18 extends to the position of the bent portion 12. After the screen body 10 is in a bent state, the first support portion 17 and the second support portion 18 abut against each other to effectively support the screen body 10.

[0064] In another feasible embodiment, the first support portion 17 and the second support portion 18 extend to the inner surface that can support the bent portion 12, so that when the screen body 10 is bent, the support body formed by the first support portion 17 and the second support portion 18 after they are in contact is a racetrack-shaped structure, and the shape of the cross section along the direction perpendicular to the screen body 10 is semi-circular or semi-circular ring. The inner surface of the bent portion 12 can be abutted by the first support portion 17 and the second support portion 18, thereby precisely controlling the bending radius of the bent portion 12. The first support portion 17 and the second support portion 18 can support and protect the bent portion 12, prevent the bent portion 12 from being bent, and improve the reliability of the display panel.

[0065] The thickness of the first support portion 17 and the second support portion 18 is less than or equal to 0.1 mm, thereby ensuring that the first support portion 17 and the second support portion 18 can fit well with the first main body portion 111 and the second main body portion 112, without excessively increasing the thickness of the bending portion 12.

[0066] In one embodiment, the first support portion 17 and the second support portion 18 can be integrally formed with the first main body portion 111 and the second main body portion 112, respectively. The first support portion 17 and the second support portion 18 can also be connected with the first main body portion 111 and the second main body portion 112 by means of mechanical connection or bonding.

[0067] The first support portion 17 and the second support portion 18 have a certain degree of hardness and toughness, and the material can be polyethylene terephthalate (PET) or polyimide film (PI), etc. Using polyethylene terephthalate (PET) or polyimide film (PI) as the support material can significantly improve the mechanical strength and reliability of the display panel. At the same time, polyethylene terephthalate (PET) and polyimide film (PI) have good dimensional stability and can maintain their shape under frequent bending or external force. Polyethylene terephthalate (PET) or polyimide film (PI) is an insulating material, which can also prevent signal interference between the first main body portion 111 and the second main body portion 112.

[0068] Secondly, embodiments of the present invention also provide a display device 100, including the aforementioned display panel. The display panel has an electrical connection layer 15 covering the metal traces 14. When the screen 10 is in a bent state, the bent portion 12 is subjected to external pressure. The electrical connection layer 15 provides stress buffering, making it less likely for the metal traces 14 within the bent portion 12 to break or deform. Furthermore, if the metal traces 14 break, the electrical connection layer 15 can replace the metal traces 14 for signal transmission, ensuring normal signal transmission even after the metal traces 14 break, and avoiding related problems such as bright lines and abnormal display caused by the breakage of the bent portion 12.

[0069] The display device 100 can Figure 4 The mobile phone shown can also be a computer, television, smart wearable display device 100, etc., and the embodiments of the present invention do not make any special limitations on this.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above embodiments merely illustrate several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A display panel, comprising a screen body, the screen body including a main body portion and a bent portion, the main body portion being connected to the bent portion, the screen body having a non-bent posture and a bent posture, wherein when the screen body is in the non-bent posture, the main body portion and the bent portion extend in the same direction, and when the screen body is in the bent posture, the bent portion extends in an arc shape, characterized in that, The bending portion includes an electrical connection layer and a metal trace layer. The electrical connection layer covers the metal trace layer and is further away from the main body than the metal trace layer. The metal trace layer is used to realize the electrical connection between two components. Metal traces are formed in the metal trace layer and have a broken posture. When the metal trace is in the broken posture, the metal trace forms multiple separate trace segments. The multiple trace segments extend into the electrical connection layer, and the electrical connection layer is used to make the multiple separate trace segments electrically connected.

2. The display panel according to claim 1, characterized in that, The bending portion is provided with multiple insulating protrusions, which intersect to form a grid structure. The grid structure has several first cavities, and each first cavity is provided with the electrical connection layer and the metal trace layer. The metal trace extends sequentially through the multiple first cavities along a preset direction.

3. The display panel according to claim 2, characterized in that, Each of the insulating protrusions has a second cavity formed therein, and each of the second cavities is provided with the electrical connection layer and the metal trace layer, with the metal trace extending sequentially through the second cavity.

4. The display panel according to claim 1, characterized in that, The electrical connection layer includes a conductive adhesive layer and an adhesive film layer stacked on top of each other. When the metal trace is in the broken state, the trace separates and extends into the conductive adhesive layer after passing through the adhesive film layer.

5. The display panel according to claim 4, characterized in that, An assembly cavity is formed within the metal trace layer, and the assembly cavity has an opening on the side facing the conductive adhesive layer, and the metal trace is housed within the assembly cavity.

6. The display panel according to claim 1, characterized in that, The electrical connection layer covers only the metal traces.

7. The display panel according to claim 1, characterized in that, The side of the electrical connection layer opposite to the metal trace layer is covered with a protective film.

8. The display panel according to claim 1, characterized in that, The main body includes a first main body and a second main body. The first main body and the second main body are connected by the bending portion. The first main body is provided with a first support portion, and the second main body is provided with a second support portion. When the screen is in the bending posture, the first main body and the second main body are parallel, and the first support portion and the second support portion abut against each other.

9. The display panel according to claim 8, characterized in that, The materials of the first support portion and the second support portion are polyethylene terephthalate or polycarbonate.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-9.

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