Display module and electronic device

Abstract

The present application relates to the field of folding display devices, and discloses a display module and an electronic device, aiming at mitigating the problem that a display module is easily damaged when being subjected to collision. A non-display area of a bendable area of the display module is a first sub-area. A display panel of the display module comprises a packaging layer for packaging pixels and wires. The packaging layer is provided with an isolation trench penetrating through the packaging layer in the thickness direction. The isolation trench is at least partially located in the first sub-area, and in the axial direction of the bendable area, the wires are located between the isolation trench and the pixels. For example, the isolation trench penetrates through the whole display panel, the whole first sub-area of the display module is provided with the isolation trench, and the isolation trench is arranged around the periphery of a display area. When the edge of the first sub-area is stressed, the isolation trench can prevent a crack from crossing the isolation trench and extending to an area where the pixels are located, thereby improving the fall resistance of the display module. The protection performance of the isolation trench can enable the electronic device not to be provided with a protection structure for protecting the first sub-area, for example, a rubber layer covering the first sub-area cannot be provided, thereby improving the appearance of the electronic device.

Description

Display modules and electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 18, 2024, with application number 202410324459.0 and application name “Display module and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the field of foldable display devices, and in particular to a display module and an electronic device. Background Art

[0003] A foldable display terminal typically includes a display screen and a foldable assembly that supports the display screen. When the foldable display terminal is adjusted between the unfolded and folded states, the display screen also unfolds and folds accordingly. The mechanical performance and reliability of the display screen directly impact the mechanical reliability of the foldable display terminal. For example, the foldable display screen's curved area is susceptible to damage from collisions and other issues, thus reducing the foldable display terminal's service life. Summary of the Invention

[0004] Embodiments of the present application provide a display module and an electronic device, aiming to improve the problem that the display module is easily damaged after a bending area of ​​the display module is hit.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions.

[0006] In a first aspect, an embodiment of the present application provides a display module. The display module has a first area, a bending area, and a second area connected in sequence. The display module has a display area and a non-display area located on the periphery of the display area. When the display module is in a flattened state, the first area, the bending area, and the second area are arranged along a first direction. The non-display area located at one end of the bending area is a first sub-area; the display module includes a display panel, and the display panel includes an encapsulation layer, a first substrate layer, a wiring, and a plurality of pixels. The encapsulation layer is located on the light-emitting side of the display panel, and the encapsulation layer and the first substrate layer are stacked; the plurality of pixels are located between the encapsulation layer and the first substrate layer, the wiring is located between the encapsulation layer and the first substrate layer and is electrically connected to the plurality of pixels, and the wiring is located on the periphery of the plurality of pixels. In which, the encapsulation layer is provided with a first isolation groove, at least part of the first isolation groove is located in the first sub-area, the first isolation groove penetrates the encapsulation layer along the thickness direction of the encapsulation layer, and along the second direction, the wiring is located between the first isolation groove and the multiple pixels, and the second direction is parallel to the first area and perpendicular to the first direction. The first isolation groove penetrates the encapsulation layer along the thickness direction of the encapsulation layer, so that cracks at the edge of the first sub-area on the encapsulation layer are not likely to extend across the first isolation groove to the display area. If the edge of the first sub-area on the encapsulation layer is impacted by external force and cracks are generated, the cracks are not likely to extend to the area where the wiring and the area where the pixels are located, effectively improving the impact of the aforementioned external force on the portion of the encapsulation layer located in the display area. The excellent buffering performance of the first isolation groove can improve the impact of the aforementioned external force on the display panel, so that the encapsulation performance of the encapsulation layer for the wiring and pixels is guaranteed. It effectively improves the problem that the bending area of ​​the display module is prone to cracking after a collision.

[0007] In conjunction with the first aspect, in some possible implementations, the first isolation trench extends to the portion of the non-display area located in the first region. And / or, the first isolation trench extends to the portion of the non-display area located in the second region. Thus, the first isolation trench partially extends to the first region or the second region, and the first isolation trench is relatively long, which can cushion the impact on the edge of the entire first sub-region and ensure the excellent packaging performance of the encapsulation layer for the traces and pixels.

[0008] In combination with the first aspect, in some feasible embodiments, the encapsulation layer is provided with a groove, at least a portion of the groove is located in the first sub-area, and the opening of the groove is toward the light-emitting side of the display panel. The groove is filled with organic matter; along the second direction, the groove is located between the first isolation groove and the wiring. If the first sub-area is impacted by an external force, the cracks caused by the external force can be blocked by the first isolation groove to prevent the cracks from extending to the area where the groove is located. The organic matter filled in the groove can buffer the external force transmitted to the area where the groove is located, further reducing the impact of the external force on the wiring and pixels. In this way, the groove has the effect of strengthening the protection of the display area.

[0009] In conjunction with the first aspect, in some achievable embodiments, the first isolation trench has a cavity therein. Thus, if an edge of the first sub-region on the encapsulation layer is impacted by an external force and cracks are generated, the crack is unlikely to extend through the cavity to the encapsulation layer region where the wiring is located and the region where the pixel is located, thereby improving the buffering performance of the first isolation trench.

[0010] In combination with the first aspect, in some feasible embodiments, the first substrate layer is provided with a second isolation groove, and at least a portion of the second isolation groove is located in the first sub-area. The second isolation groove penetrates the first substrate layer along the thickness direction of the first substrate layer, and along the second direction, the wiring is located between the second isolation groove and the plurality of pixels. Thus, the second isolation groove can prevent cracks on one side of the second isolation groove on the first substrate layer from extending across the second isolation groove to the other side of the second isolation groove. It can prevent cracks on the side of the second isolation groove on the first substrate layer away from the display area from extending to the display area, thereby avoiding the impact of cracks at the edge of the first sub-area on the first substrate layer on the pixels and wiring. Effectively improve the impact of collisions on the display module.

[0011] In conjunction with the first aspect, in some achievable embodiments, the first isolation trench and the second isolation trench are connected along the thickness direction of the encapsulation layer. Thus, the first isolation trench and the second isolation trench can be formed simultaneously in the same process, simplifying the process flow. Furthermore, the first isolation trench and the second isolation trench can both block cracks at the edge of the first sub-area from extending toward the display area, effectively reducing the impact of external forces such as collisions on the display area.

[0012] In conjunction with the first aspect, in some achievable embodiments, the display panel further includes an insulating layer located between the first substrate layer and the encapsulation layer. Thus, the insulating layer provides an insulating effect, preventing moisture and the like from entering between the first substrate layer and the encapsulation layer and affecting pixel and trace performance.

[0013] In conjunction with the first aspect, in some achievable embodiments, the isolation layer is provided with a third isolation trench, which extends through the isolation layer along the thickness direction of the isolation layer. At least a portion of the third isolation trench is located in the first sub-region, and along the second direction, the wiring is located between the third isolation trench and the plurality of pixels. Thus, the third isolation trench can prevent cracks in the isolation layer from crossing the third isolation trench. Cracks in the isolation layer located at the edge of the first sub-region can be prevented from extending into the display area. The isolation performance of the third isolation trench can ensure the integrity of the isolation layer in the display area, improving the impact of the isolation layer on pixels and wiring after collisions.

[0014] In conjunction with the first aspect, in some achievable embodiments, the third isolation trench communicates with the first isolation trench along the thickness of the encapsulation layer. This allows the third isolation trench and the first isolation trench to be formed simultaneously in the same process, simplifying the manufacturing process. Furthermore, the third isolation trench and the first isolation trench can both block cracks at the edge of the first sub-area from extending toward the display area, effectively reducing the impact of external forces such as collisions on the display area.

[0015] In conjunction with the first aspect, in some achievable embodiments, the display panel further includes a second substrate layer, and the insulating layer is located between the first substrate layer and the second substrate layer. Thus, the second substrate layer can provide support for the pixels and the wiring.

[0016] In conjunction with the first aspect, in some achievable embodiments, the second substrate layer is provided with a fourth isolation trench that extends through the second substrate layer along its thickness. At least a portion of the fourth isolation trench is located within the first sub-region, and along the second direction, the wiring is located between the fourth isolation trench and the plurality of pixels. Thus, the fourth isolation trench can prevent cracks at the edge of the first sub-region of the second substrate layer from extending across the fourth isolation trench into the display area, thereby ensuring support performance for the portion of the second substrate layer located within the display area and providing better protection for the display area.

[0017] In conjunction with the first aspect, in some achievable embodiments, the fourth isolation trench communicates with the first isolation trench along the thickness of the encapsulation layer. This allows the first and fourth isolation trenches to be formed simultaneously in the same process, simplifying the manufacturing process. Furthermore, the first and fourth isolation trenches can simultaneously block cracks at the edge of the first sub-area from extending toward the display area, effectively reducing the impact of external forces such as collisions on the display area.

[0018] In combination with the first aspect, in some feasible embodiments, the non-display area located in the first area is the second sub-area. The encapsulation layer is provided with a fifth isolation groove, and the fifth isolation groove penetrates the encapsulation layer along the thickness direction of the encapsulation layer, and at least part of the fifth isolation groove is located in the second sub-area. Along the second direction or the first direction, the wiring is located between the first isolation groove and the multiple pixels. Thus, when the encapsulation layer is located at the edge of the second sub-area and is subjected to force, if cracks are generated in the encapsulation layer, the fifth isolation groove can isolate the cracks and prevent the cracks from extending to the area of ​​the encapsulation layer where the wiring and pixels are located. The fifth isolation groove has the function of protecting the encapsulation layer in the display area, effectively reducing the impact of collisions on the display module.

[0019] In conjunction with the first aspect, in some achievable embodiments, the fifth isolation trench is connected to the first isolation trench along the first direction. Thus, the fifth isolation trench and the first isolation trench can be formed simultaneously in the same process, simplifying the process flow. Furthermore, the connected fifth isolation trench and the first isolation trench can protect the display area from the circumference of the display area, thereby reducing the impact of collisions on the first and second sub-areas on the display area.

[0020] In combination with the first aspect, in some feasible embodiments, the display module further includes a support layer. The first substrate layer is located between the support layer and the encapsulation layer. The support layer includes a first part, a second part, and a third part connected in sequence. When the display module is in a flattened state, the first part, the second part, and the third part are arranged along the first direction; when the display module is in a folded state, the second part is in a bent state. When the display module is in a flattened state, the vertical projection of the bending area on the support layer overlaps with the second part. Thus, in the process of adjusting the display module from the flattened state to the folded state, the second part bends, making it easier to fold the display module and saving effort in the folding process of the electronic device.

[0021] In conjunction with the first aspect, in some possible implementations, the second portion is provided with a plurality of groove structures extending along the second direction. Thus, the groove structures can relieve stress during bending of the second portion, preventing stress concentration from causing cracks or tears in the second portion. The groove structures impart ease of bending to the second portion.

[0022] In conjunction with the first aspect, in some achievable embodiments, the groove structure penetrates the support layer along the thickness direction of the support layer. Thus, during the bending process of the second portion, the groove structure penetrating the support layer can better release internal stress and prevent the second portion from tearing during the bending process.

[0023] In conjunction with the first aspect, in some achievable embodiments, the display module further includes a cover plate, and the encapsulation layer is located between the cover plate and the first substrate layer. Thus, the cover plate is used to protect the display panel and prevent dust.

[0024] In conjunction with the first aspect, in some achievable embodiments, the display module further includes a back film, and the first substrate layer is located between the back film and the encapsulation layer. Thus, the back film is used to protect the display panel and prevent dust.

[0025] In a second aspect, an embodiment of the present application provides an electronic device, comprising: a printed circuit board and any one of the display modules provided in the first aspect, wherein the printed circuit board is electrically connected to the trace.

[0026] In combination with the second aspect, in some feasible embodiments, the electronic device further includes: a first protective shell and a second protective shell. The first protective shell covers the edge of the first area; the second protective shell covers the edge of the second area. When the electronic device is in a flattened state, along the thickness direction of the electronic device, the first protective shell covers part of the first isolation groove, and the second protective shell covers part of the first isolation groove. Thus, the first protective shell can prevent the edge of the first area of ​​the display module from being exposed, thereby preventing the edge of the first area of ​​the display module from being collided or damaged by impact. The second protective shell can prevent the edge of the second area of ​​the display module from being collided or damaged by impact. The edge of the display module not covered by the first protective shell and the second protective shell can be protected by the first isolation groove, which better protects the performance and life of the display module.

[0027] In conjunction with the second aspect, in some possible implementations, the display module further includes: a rotating shaft and a protective structure. The display module and the rotating shaft are stacked along the thickness direction of the display module. The protective structure is connected to one end of the rotating shaft and covers the side surfaces of the first sub-area; a gap is defined between the protective structure and the first sub-area. Thus, the protective structure can protect the side surfaces of the first sub-area from impact.

[0028] In combination with the second aspect, in some feasible embodiments, one end of the protective structure along the thickness direction of the electronic device is the first end, and the other end is the second end. The first end is connected to the rotating shaft; when the display module is in a flattened state, the vertical projection of the second end on the display module does not overlap with the first sub-area. Thus, the protective structure can protect the side of the first sub-area, and the protective structure has good anti-collision performance. The second end will not block the first sub-area. When the display module is in a flattened state, the user can observe the entire first sub-area, making the electronic device more beautiful. In addition, the area where the light-emitting side of the first sub-area is located can be free of protective parts, saving the cost of the protective parts and reducing the manufacturing cost of the electronic device.

[0029] In conjunction with the second aspect, in some achievable embodiments, the protective structure includes: a first spring clip, a second spring clip, a third spring clip, and a main frame; the main frame is connected to the rotating shaft; the second spring clip, the third spring clip, and the main frame are all connected to the first spring clip; when the electronic device is in a flattened state, the second spring clip, the main frame, and the third spring clip are arranged along the first direction; the main frame, the second spring clip, and the third spring clip all cover the side of the display module, and the first spring clip covers at least a portion of the first isolation groove. In this way, the main frame, the second spring clip, and the third spring clip can protect the side of the first sub-area from impact and prevent cracks from forming. The second spring clip can protect the surface of the light-emitting side of the first sub-area from impact, and the first isolation groove can prevent cracks from extending to the display area, providing multiple protective functions.

[0030] In conjunction with the second aspect, in some possible implementations, the second spring sheet partially covers the first isolation groove, and the third spring sheet partially covers the first isolation groove. The second and third spring sheets can protect the side surfaces of the first sub-area from impact, and the first isolation groove can prevent cracks from extending into the display area of ​​the display module, thereby fully protecting the display area.

[0031] In combination with the second aspect, in some implementable embodiments, the electronic device further includes: a first middle frame and a second middle frame. The first middle frame supports the first area, and the end of the first middle frame facing the light-emitting side of the electronic device is a first surround; the second middle frame supports the second area; and the end of the second middle frame facing the light-emitting side of the electronic device is a second surround. When the display module is in a flattened state, the vertical projection of the first surround on the display module does not overlap with the display module; the vertical projection of the second surround on the display module does not overlap with the display module. The second surround and the first surround will not block the light-emitting side of the display module. This can make the display module more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1a is a schematic structural diagram of an electronic device in a flat state.

[0033] FIG1 b is a schematic diagram of the structure of the electronic device in a folded state.

[0034] FIG2 is a schematic diagram of the exploded structure of the electronic device.

[0035] FIG3 a is a schematic structural diagram of a display module provided in an embodiment of the present application.

[0036] FIG3 b is a schematic structural diagram of a display module in a flattened state provided by an embodiment of the present application.

[0037] FIG4 a is a schematic cross-sectional structural diagram of a display panel provided in an embodiment of the present application.

[0038] FIG4 b is a schematic diagram of the structure of a pixel.

[0039] FIG5 is a schematic diagram of the shape structure of the first isolation trench provided in an embodiment of the present application.

[0040] FIG6 a is a schematic structural diagram of a plurality of isolation trenches provided in an embodiment of the present application.

[0041] FIG6 b is another schematic structural diagram of multiple isolation trenches provided in an embodiment of the present application.

[0042] FIG7 a is a schematic diagram of another cross-sectional structure of a display panel provided in an embodiment of the present application.

[0043] FIG7 b is a schematic diagram of another cross-sectional structure of a display panel provided in an embodiment of the present application.

[0044] FIG8 a is a schematic cross-sectional view of the AA plane in FIG3 a .

[0045] FIG8 b is a schematic cross-sectional view of the BB plane in FIG3 a .

[0046] FIG8 c is another cross-sectional schematic diagram of the BB plane in FIG3 a .

[0047] FIG9 a is a schematic structural diagram of a support layer and a display panel provided in an embodiment of the present application.

[0048] FIG9 b is an enlarged schematic diagram of point K in FIG9 a .

[0049] FIG10 a is a schematic structural diagram of the bending area and the first protective shell provided in an embodiment of the present application.

[0050] FIG10 b is a schematic cross-sectional view of the SS surface in FIG10 a .

[0051] FIG11 a is a schematic structural diagram of another electronic device provided in an embodiment of the present application.

[0052] FIG11b is an enlarged schematic diagram of point M in FIG11a.

[0053] FIG11c is an enlarged schematic diagram of point N in FIG11a.

[0054] FIG. 11 d is a schematic structural diagram of the first middle frame in FIG. 11 a .

[0055] FIG12 is a schematic diagram of the exploded structure of the protective structure and the first protective shell in FIG10a.

[0056] FIG13 a is a schematic structural diagram of a protective structure provided in an embodiment of the present application.

[0057] FIG13 b is a schematic diagram of the exploded structure of the protective structure and the first protective shell in FIG13 a .

[0058] FIG13c is a projection diagram of the elastic member and the first isolation groove in FIG13b.

[0059] In the figure: 10-electronic device; 200-screen support assembly; 100-display module; 210-first middle frame; 220-second middle frame; 230-rotating shaft; 20-printed circuit board; 15a-back cover; 15b-back cover; 130-display panel; W1-first area; W0-bending area; W2-second area; E1-first sub-area; E4-fourth sub-area; E2-second sub-area; E3-third sub-area; G-display area; 131-encapsulation layer; 132-first substrate layer; 1 33-pixel; 134-wiring; 12-driving circuit; 01-cathode layer; 02-electron transport layer; 03-hole blocking layer; 04-luminescent layer; 05-hole transport layer; 06-hole injection layer; 07-anode layer; 08-groove; 09-organic matter; 101-first isolation groove; 11-auxiliary groove; 102-second isolation groove; 120-back film; 150-polarization layer; 140-support layer; 141-first part; 142-second part; 143-third part; 1 44 - slot structure; 30 - protective structure; 31 - gap; 32 - second end; 33 - first end; 40 - protective structure; 41 - hard member; 42 - elastic member; 411 - first side plate; 412 - second side plate; 413 - main frame; 421 - first spring clip; 422 - second spring clip; 201 - first protective shell; 202 - second protective shell; 211 - first surrounding edge; 221 - second surrounding edge; 101 - first isolation slot; 102 - second isolation slot; 103 - third isolation slot; 104-fourth isolation groove; 105-fifth isolation groove; 106-sixth isolation groove; 107-seventh isolation groove; 001-first adhesive layer; 002-second adhesive layer; 003-third adhesive layer; 004-fourth adhesive layer; 135-insulation layer; 136-second substrate layer; 137-touch sensor; 110-cover plate; 213-frame; 212-middle plate; 214-metal part; 215-adhesive part; 108-eighth isolation groove; 109-nineth isolation groove; 423-third spring piece. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0061] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0062] In addition, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they can change accordingly according to changes in the orientation of the components in the drawings.

[0063] This application provides an electronic device, which is a foldable device. This electronic device can display an image and can also be folded, thereby changing the size of the electronic device. In this application, the electronic device can be a mobile phone, a monitor, a tablet computer, an in-car computer, or other product with a display interface. The embodiments of this application are described using a foldable mobile phone as an example.

[0064] Figure 1a is a schematic diagram of the structure of the electronic device 10 in a flat state. Figure 1b is a schematic diagram of the structure of the electronic device 10 in a folded state. Referring to Figures 1a and 1b, the electronic device 10 can be folded or unfolded, thereby changing the size of the electronic device 10 according to actual needs and usage scenarios. For example, when it is necessary to view the screen, the electronic device 10 can be unfolded to the state shown in Figure 1a, and the display screen of the electronic device 10 can be unfolded, so that the screen can be better viewed. When it is necessary to answer or make a call, the electronic device 10 can be folded to the state shown in Figure 1b, which is convenient for the user to hold and improves the user experience.

[0065] It is understood that the folded state of the electronic device 10 is not limited to the state shown in Figure 1b. The electronic device 10 can have multiple folded states, for example, the electronic device 10 can have multiple folded states between the flat state of Figure 1a and the folded state of Figure 1b.

[0066] For example, electronic device 10 includes a display module 100 and a screen support assembly 200. Display module 100 and screen support assembly 200 are stacked along the thickness direction of electronic device 10. Screen support assembly 200 supports display module 100 and drives display module 100 when folding. The thickness direction of display module 100 and electronic device 10 is the same, both being the third direction. For ease of description, the z direction is defined as the third direction.

[0067] Figure 2 is a schematic diagram of the exploded structure of electronic device 10. Referring to Figure 2 , screen support assembly 200 includes a first middle frame 210, a second middle frame 220, and a hinge 230. The first middle frame 210 is connected to the hinge 230, and the second middle frame 220 is connected to the hinge 230. The first middle frame 210 and the second middle frame 220 support the entire device.

[0068] For example, the first middle frame 210 and the rotating shaft 230 can be connected by bolts, snaps, adhesive layers, or welding layers. Similarly, the second middle frame 220 and the rotating shaft 230 can be connected by bolts, snaps, adhesive layers, or welding layers. When the electronic device 10 is in a flat state, the first middle frame 210, the rotating shaft 230, and the second middle frame 220 are arranged in sequence along the first direction. The rotating shaft 230 can rotate about the second direction. In other words, the axis of the rotating shaft 230 extends along the second direction.

[0069] For ease of description, the x direction is defined as the first direction, and the y direction is defined as the second direction, wherein the x direction is perpendicular to the z direction, the x direction is perpendicular to the y direction, and the y direction is perpendicular to the z direction.

[0070] It should be understood that the x- and z-directions being perpendicular is not limited to a 90° angle between them; assembly and manufacturing errors can be tolerated. For example, the angle between the x- and z-directions can be 85° to 95°. For example, it can be 85°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, or 95°. The same applies to the rest of the description regarding perpendicularity.

[0071] The embodiment of the present application does not limit the structure of the rotating shaft 230. For example, the rotating shaft 230 includes a first door panel, a second door panel and a shaft body. When the screen support assembly 200 is in a flattened state, the first door panel, the second door panel and the shaft body are arranged along the x-direction. The first door panel and the shaft body are rotationally connected, for example, the first door panel and the shaft body are rotationally connected through an arc groove and a slider; or, the first door panel and the shaft body are rotationally connected through a hinge. Similarly, the second door panel and the shaft body are rotationally connected, for example, the second door panel and the shaft body are rotationally connected through an arc groove and a slider; or, the second door panel and the shaft body are rotationally connected through a hinge. The first middle frame 210 is connected to the first door panel, for example, by screwing or clamping. The second middle frame 220 is connected to the second door panel, for example, by screwing or clamping.

[0072] During the adjustment of the electronic device 10 between the folded state and the flattened state, the angle between the surface of the first middle frame 210 facing the display module 100 (as shown in FIG1a ) and the surface of the second middle frame 220 facing the display module 100 will change accordingly. When the electronic device 10 is adjusted from the flattened state to the folded state, the first middle frame 210 connected to the rotating shaft 230 and the second middle frame 220 connected to the rotating shaft 230 can both rotate about the y-direction, so that the angle between the plane where the first middle frame 210 is located and the plane where the second middle frame 220 is located gradually decreases. When the electronic device 10 is adjusted from the folded state to the flattened state, the first middle frame 210 and the second middle frame 220 rotate about the y-direction, so that the angle between the plane where the first middle frame 210 is located and the plane where the second middle frame 220 is located gradually increases.

[0073] When the electronic device 10 is in the flattened state, the angle between the surface of the first middle frame 210 facing the display module 100 and the surface of the second middle frame 220 facing the display module 100 may be -10° to 10°, for example, ±10°, ±9°, ±8°, ±7°, ±6°, ±5°, ±4°, ±3°, ±2°, ±1°, or 0°. When the electronic device 10 is in the folded state, the angle between the surface of the first middle frame 210 facing the display module 100 and the surface of the second middle frame 220 facing the display module 100 may be 170° to 190°, for example, 170°, 172°, 175°, 178°, 179°, 180°, 181°, 182°, 185°, 188°, or 190°.

[0074] For example, the electronic device 10 may further include a printed circuit board (PCB) 20, which is located between the screen support assembly 200 and the display module 100. The PCB 20 and the display module 100 are electrically connected.

[0075] For example, electronic components may be carried on the printed circuit board 20. In some embodiments, components such as input buttons, a transmitter, a processor, a memory, a battery, a charging circuit, a system on chip (SoC) structure, etc. may be mounted on or connected to the printed circuit board 20.

[0076] In some embodiments, the electronic device 10 may further include a flexible printed circuit (FPC), which is electrically connected to the display module 100. The FPC is used to send image signals to the display module 100, which then displays images after receiving the image signals.

[0077] In some embodiments, the electronic device 10 may further include a rear shell 15a (15b), which is also called a rear cover. In Figure 2, the printed circuit board 20 is located between the screen support assembly 200 and the rear shell 15a (15b). It should be understood that in some embodiments, the printed circuit board 20 may also be provided between the screen support assembly 200 and the display module 100, and the embodiment of the present application does not limit this. In Figure 2, the electronic device 10 includes two rear shells, one of which 15a is connected to the first middle frame 210 and is stacked along the z direction. The other rear shell 15b is connected to the second middle frame 220 and is stacked along the z direction.

[0078] For example, the electronic device 10 may further include a battery (not shown). The battery may be disposed between the screen support assembly 200 and the rear housing 15a (15b), or between the screen support assembly 200 and the display module 100, and this application does not impose any restrictions on this.

[0079] The embodiments of the present application do not limit the folding type of the terminal device 10. In some embodiments, the terminal device 10 has an inward-folding structure, that is, when the terminal device 10 is in the folded state, the display module 100 (as shown in FIG. 1 a) is located between the first middle frame 210 and the second middle frame 220. In other embodiments, the terminal device 10 has an outward-folding structure, that is, when the terminal device 10 is in the folded state, the first middle frame 210 and the second middle frame 220 are both located between opposite ends of the display module 100.

[0080] FIG3 a is a schematic diagram of the structure of a display module 100 provided in an embodiment of the present application. Referring to FIG3 a , the display module 100 includes a display panel 130. The display panel 130 is used to display an image, and a user can obtain information displayed by viewing the image.

[0081] The display module 100 has a first region W1 , a bending region W0 and a second region W2 connected in sequence. When the display module 100 is in a flat state, the first region W1 , the bending region W0 and the second region W2 are distributed in sequence along the x-direction.

[0082] The "bend" in the bending region W0 refers to the bending property of this region within the display module 100. When the display module 100 transitions from the flat state to the folded state, the bending region W0 bends. In other words, when the display module 100 is in the folded state, the bending region W0 is in a bent state. When the display module 100 transitions from the flat state to the folded state, the first region W1 and the second region W2 do not bend, or only slightly bend, with the curvature of the curvature of the first region W1 and the second region W2 being much smaller than that of the curvature of the curvature of the bending region W0.

[0083] When the display module 100 is flattened, the vertical projection of the hinge 230 (as shown in FIG2 ) on the display module 100 overlaps with the bending region W0. The vertical projection of the first middle frame 210 (as shown in FIG2 ) on the display module 100 overlaps with the first region W1. The vertical projection of the second middle frame 220 (as shown in FIG2 ) on the display module 100 overlaps with the second region W2.

[0084] The vertical projection of the rotation axis 230 on the display module 100 is defined as a planar figure formed by projecting the rotation axis 230 onto the plane of the display module 100 in a direction perpendicular to the display module 100, i.e., in the z-direction. The area enclosed by the outer contour of the planar figure is the vertical projection of the rotation axis 230 on the display module 100. The same applies to the remaining descriptions of the vertical projection in the embodiments of the present application.

[0085] Figure 3b is a schematic structural diagram of the display module 100 in a flattened state provided by an embodiment of the present application. In combination with Figure 3a and Figure 3b, the display module 100 has a display area G and a non-display area according to the luminous part and the non-luminous part of the display module 100. The non-display area is located on the periphery of the display area G. When the display module 100 is working, the display area G emits image light, and the non-display area does not emit image light. It can be understood that the first area W1 includes part of the non-display area and part of the display area G. Similarly, the second area W2 includes part of the non-display area and part of the display area G. The bending area W0 includes part of the non-display area and part of the display area G.

[0086] The non-display area at one end of the bending region W0 is defined as the first sub-region E1, and the non-display area at the other end of the bending region W0 is defined as the fourth sub-region E4. The first sub-region E1 and the fourth sub-region E4 are located at the two ends of the bending region W0 along the y-direction, respectively. The non-display area in the first region W1 is defined as the second sub-region E2. The first sub-region E1 and the fourth sub-region E4 are both connected to the second sub-region E2. The non-display area in the second region W2 is defined as the third sub-region E3. The first sub-region E1 and the fourth sub-region E4 are both connected to the third sub-region E3.

[0087] Figure 4a is a schematic cross-sectional view of a display panel 130 provided in an embodiment of the present application. Referring to Figure 4a, Figure 4a illustrates only a portion of the bending region W0 and a portion of the first region W1 of the display panel 130. The dotted line in Figure 4a represents the boundary between the bending region W0 and the first region W1.

[0088] In Figure 4a, the display panel 130 includes an encapsulation layer 131, a first substrate layer 132, wiring 134, and multiple pixels 133. The encapsulation layer 131 is used to encapsulate the wiring 134 and the multiple pixels 133. The encapsulation layer 131 is located on the light-emitting side of the display panel 130. The encapsulation layer 131 and the first substrate layer 132 are stacked along the z-direction. The wiring 134 and the multiple pixels 133 are both located between the encapsulation layer 131 and the first substrate layer 132. The wiring 134 is located on the side of the multiple pixels 133 facing the non-display area. The wiring 134 is electrically connected to the multiple pixels 133. The wiring 134 is used to provide a driving voltage to each pixel 133 to cause the pixel to emit light.

[0089] In the embodiment of the present application, the encapsulation layer 131 is provided with a first isolation trench 101. At least a portion of the first isolation trench 101 is located in the first sub-region E1. The first isolation trench 101 penetrates the encapsulation layer 131 along the thickness direction of the encapsulation layer 131. Along the y-direction, the trace 134 is located between the first isolation trench 101 and the plurality of pixels 133.

[0090] Please return to Figure 3b. The area where the isolation groove is set is located on the periphery of the trace 134. The area where the isolation groove is located as illustrated in Figure 3b does not limit the need to set the isolation groove in this area, but is to illustrate that the isolation groove can be set in this area. In addition, the area where the isolation groove is located as illustrated in Figure 3b is to illustrate the relative positional relationship between the isolation groove and the trace and the display area G, and does not limit the isolation groove to be located on the surface of the display module 100. Similarly, the area where the trace in Figure 3b is located is to illustrate the positional relationship between the trace and the display area G, and does not limit the trace to be located on the surface of the display module 100. The isolation grooves in Figure 3b may include the first isolation groove and the second isolation groove, the third isolation groove, the fourth isolation groove, the fifth isolation groove, the sixth isolation groove, and the seventh isolation groove described later.

[0091] Because the first isolation trench 101 penetrates the encapsulation layer 131 along its thickness, cracks on one side of the first isolation trench 101 along the y-direction on the encapsulation layer 131 are unlikely to extend across the first isolation trench 101 to the other side. In other words, cracks on the edge of the first sub-area E1 on the encapsulation layer 131 are unlikely to extend across the first isolation trench 101 to the display area G. If an external force impacts the edge of the first sub-area E1 on the encapsulation layer 131 and causes a crack, the crack is unlikely to extend to the area where the traces 134 and the pixels 133 are located, effectively mitigating the effects of the aforementioned external force on the portion of the encapsulation layer 131 located in the display area G. The excellent buffering properties of the first isolation trench 101 mitigate the effects of the aforementioned external force on the display panel 130, ensuring the encapsulation performance of the encapsulation layer 131 for the traces 134 and pixels 133.

[0092] In this way, the edge of the first sub-area E1 of the display panel 130 does not need to be provided with a protective member, thereby preventing the protective member from affecting the appearance of the electronic device. Alternatively, the protective capability requirements of the protective member at the edge of the first sub-area E1 of the display panel 130 are reduced, thereby reducing manufacturing costs.

[0093] The aforementioned first isolation trench 101 penetrating the encapsulation layer 131 along the thickness direction of the encapsulation layer 131 means that the first isolation trench 101 has two communicating openings along the thickness direction of the encapsulation layer 131. One opening is located on the surface of the encapsulation layer 131 facing the light output side, and the other opening is located on the surface of the encapsulation layer 131 facing away from the light output side.

[0094] For example, the encapsulation layer 131 covers the plurality of pixels 133 and encapsulates the plurality of pixels 133 to block water and oxygen, thereby ensuring the performance and service life of the plurality of pixels 133. Similarly, the encapsulation layer 131 encapsulates the traces 134 and can ensure the electrical performance of the traces 134.

[0095] The encapsulation layer 131 can be manufactured using a thin film encapsulation (TFE) process, for example. Exemplarily, the encapsulation layer 131 can include at least one of a silicon nitride layer SiNx, a silicon oxide layer SiOx, an organic resin layer (orGanic resin), a silicon nitride layer SiNx, or a silicon oxide layer SiOx. In an embodiment where the encapsulation layer 131 includes a multi-layer structure, the multi-layer structures are stacked along the z-direction. The encapsulation layer 131 has the function of blocking moisture and dust, preventing moisture and dust from entering the display panel 130.

[0096] FIG4 b is a schematic diagram of the structure of a pixel 133. Referring to FIG4 b , illustratively, the pixel 133 may include a cathode layer (cathode) 01, an electron transport layer (ETL) 02, a hole blocking layer (HBL) 03, an emission layer (EL) 04, a hole transport layer (HTL) 05, a hole injection layer (HIL) 06, and an anode layer (anode) 07, which are stacked along the z direction. A voltage is applied to the anode layer 07 and the cathode layer 01 through wiring. The carriers in the anode layer 07 and the cathode layer 01 meet in the emission layer 04 and excite photons, thereby causing the organic light-emitting layer to emit light. Exemplarily, the material of the organic light-emitting layer includes an organic small molecule light-emitting material, a complex light-emitting material, a high molecular polymer, and the like.

[0097] Exemplarily, the material of the anode layer 07 can be a metal material, such as aluminum (Al) or magnesium (MG). The material of the cathode layer 01 can be a transparent conductive material, such as indium tin oxide (ITO) or indium zinc oxide (IZO). In this case, the cathode layer 01 is light-transmitting, and the transmittance of the anode layer 07 is very small, so the light emitted by the pixel 133 is emitted from the side where the cathode layer 01 is located. Alternatively, the material constituting the anode layer 07 can be the above-mentioned transparent conductive material; the material constituting the cathode layer 01 is the above-mentioned metal material. In this case, the anode layer 07 is light-transmitting, and the transmittance of the cathode layer 01 is very small, so the light emitted by the pixel 133 is emitted from the side where the anode layer 07 is located.

[0098] Exemplarily, a pixel 133 may include at least one sub-pixel. A wiring 134 (as shown in FIG4a ) is electrically connected to each sub-pixel to provide a voltage for each sub-pixel. The embodiment of the present application does not limit the number of sub-pixels in a pixel and the combination of luminous colors. In some embodiments, a pixel may include three sub-pixels, and the visible light emitted by the three sub-pixels is red (red, R) light, green (Green, G) light, and blue (blue, B) light; or, the visible light emitted by the three sub-pixels is cyan (cyan, C) light, magenta (maGenta, M) light, and yellow (yellow, Y). In some embodiments, a pixel may include four sub-pixels, and the visible light emitted by the four sub-pixels is red light, green light, blue light, and white (white, W) light, or, the four sub-pixels emit visible light of red light, green light, blue light, and green light, respectively.

[0099] Returning to Figure 3b, in some embodiments, the display panel 130 may further include a drive circuit 12. The drive circuit 12 may include a thin film transistor (TFT) array, which may include multiple TFTs arranged in a crisscross pattern. The TFTs are electrically connected to the cathode layer 01 and anode layer 07 of the pixels 133. The TFTs drive the pixels to emit light, causing the display panel to display an image. Routes 134 are electrically connected to the drive circuit 12. The drive circuit 12 adjusts the voltage of each pixel 133 via the routes 134.

[0100] The embodiment of the present application does not limit the material of the trace 134. For example, the material of the trace 134 may include at least one of copper, copper alloy, aluminum, aluminum alloy, indium tin oxide (ITO), alumina zinc oxide (AZO), indium zinc oxide (IZO), carbon nanotubes, graphene, or silver nanowires.

[0101] For example, in the embodiment of the present application, the trace 134 may be an electroluminescent wire (EW), a gate driver on array (GOA), or the like.

[0102] The embodiment of the present application does not limit the shape of the extension path of the first isolation trench 101 in the first sub-region E1. For example, the extension path of the first isolation trench 101 in the first sub-region E1 can be a straight line, a broken line, or a curve.

[0103] The present embodiment does not limit the width of the first isolation trench 101 to be equal at all locations along the z-direction. The aforementioned width refers to the dimension of the first isolation trench 101 along the y-direction. For example, the first isolation trench 101 may be a straight trench, an oblique trench, or a trapezoidal trench.

[0104] In some embodiments, the first isolation trench 101 may be located only within the first sub-region E1. In other words, the first isolation trench 101 does not extend beyond the first sub-region E1. Alternatively, a portion of the first isolation trench 101 may be located outside the first sub-region E1. For example, a portion of the first isolation trench 101 extends to the first region W1. Alternatively, a portion of the first isolation trench 101 extends to the second region W2. Alternatively, a portion of the first isolation trench 101 extends to the first region W1 and a portion extends to the second region W2. A portion of the first isolation trench 101 extends to the first region W1 or the second region W2. The long length of the first isolation trench 101 can buffer the impact on the edge of the entire first sub-region E1, thereby ensuring the excellent packaging performance of the packaging layer for the wiring and pixels.

[0105] In embodiments where the first isolation trench 101 does not extend beyond the first region E1, the total length of the first isolation trench 101 along the x-direction may be 0.4 to 0.98 times the total length of the first sub-region E1 along the x-direction. For example, the total length of the first isolation trench 101 along the x-direction may be 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.92, 0.95, 0.96, or 0.98 times the total length of the first sub-region E1 along the x-direction. The total length of the first isolation trench 101 along the x-direction is the distance between the two ends of the first isolation trench 101 along the x-direction.

[0106] The embodiment of the present application does not limit the distance from the first isolation trench 101 to the edge of the encapsulation layer 131. For example, the maximum distance from the first isolation trench 101 to the edge of the encapsulation layer 131 along the y-direction may be 0.4 to 0.8 times the size of the first sub-region E1 along the y-direction. For example, the maximum distance from the first isolation trench 101 to the edge of the encapsulation layer 131 along the y-direction may be 0.4, 0.5, 0.6, 0.7 or 0.8 times the size of the first sub-region E1 along the y-direction. The smaller the distance from the first isolation trench 101 to the edge of the encapsulation layer 131, the smaller the width of the display panel 130 occupied by the first isolation trench 101. More space can be left for the pixels 133 and the traces 134, which is beneficial to increasing the area of ​​the display area G.

[0107] The embodiment of the present application does not limit the width of the first isolation trench 101. For example, the width of the first isolation trench 101 can be 0.3 μm (micrometer) to 1 mm (millimeter). For example, the width of the first isolation trench 101 can be 0.3 μm, 1 μm, 5 μm, 10 μm, 30 μm, 50 μm, 70 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 260 μm, 320 μm, 400 μm, 420 μm, 540 μm, 600 μm, 800 μm, 900 μm, or 1 mm.

[0108] Furthermore, along the extension path of the first isolation trench 101, the widths of various portions of the first isolation trench 101 are not necessarily uniform. The widths of different locations of the first isolation trench 101 may vary. For example, along the x-direction, the width of the first isolation trench 101 may be uniform, or the width of the first isolation trench 101 may gradually increase, or the width of the first isolation trench 101 may first increase and then decrease, or the width of the first isolation trench 101 may vary randomly.

[0109] The embodiment of the present application does not limit the method for forming the first isolation trench 101. For example, the first isolation trench 101 can be formed by laser processing or etching.

[0110] In some embodiments, the first isolation trench 101 includes a cavity. The first isolation trench 101 may be a through hole that penetrates the encapsulation layer 131 along the z-direction. In other words, the first isolation trench 101 may not be filled with fillers such as liquids or solids, so as to prevent cracks from extending into the filler. In some embodiments, the first isolation trench 101 may be filled with gas, such as air, nitrogen, or helium. In an embodiment in which the first isolation trench 101 is filled with gas, the process of forming the first isolation trench 101 is performed under the gas atmosphere so that the first isolation trench 101 is filled with gas. For example, the first isolation trench 101 is formed by laser processing or etching in air, and the first isolation trench 101 may be filled with air. Alternatively, in some embodiments, the cavity of the first isolation trench 101 may be a vacuum.

[0111] The present embodiment does not limit the number of first isolation trenches 101 within the first sub-area E1. For example, the number of first isolation trenches 101 within the first sub-area E1 can be one, two, three, or more. In embodiments where there are multiple first isolation trenches 101 within the first sub-area E1, the shapes and sizes of the multiple first isolation trenches 101 can be the same or different. The multiple first isolation trenches 101 can be arranged along the x-direction or the y-direction.

[0112] FIG. 5 is a schematic structural diagram of the first isolation groove 101 provided by an embodiment of the present application. The dashed line in FIG. 5 is for exemplifying the relationship between each region, such as the positional relationship between the first sub-region E1, the second sub-region E2, the third sub-region E3, and the display region G. In the (1) diagram of FIG. 5, the extension path of the first isolation groove 101 is arc-shaped. One end of the first isolation groove 101 is located in the third sub-region E3, and the other end of the first isolation groove 101 is located in the second sub-region E2, and both ends of the first isolation groove 101 extend to the side surface of the edge of the encapsulation layer 131. For example, the distance between both ends of the first isolation groove 101 and the side surface of the edge of the encapsulation layer 131 is 0 μm - 0.1 μm, and this distance can be, for example, 0 μm, 0.05 μm, or 0.1 μm, etc. The aforementioned side surface of the edge refers to the surface of the edge of the encapsulation layer 131 in the thickness direction.

[0113] In the (2) diagram of FIG. 5, one end of the first isolation groove 101 is located in the third sub-region E3, the other end of the first isolation groove 101 is located in the second sub-region E2, and the extension path of the first isolation groove 101 in the part located in the first sub-region E1 is a straight line parallel to the x direction.

[0114] In the (3) diagram of FIG. 5, the extension path of the first isolation groove 101 is arc-shaped, and the entire first isolation groove 101 is located within the first sub-region E1.

[0115] In the (4) diagram of FIG. 5, the shape and position of the first isolation groove 101 are the same as those in the (1) diagram of FIG. 5, and will not be elaborated here. In the (4) diagram of FIG. 5, an auxiliary groove 11 can also be provided in the first sub-region E1. The auxiliary groove 11 can penetrate the encapsulation layer 131 along the thickness direction of the encapsulation layer 131. The first isolation groove 101 is located between the auxiliary groove 11 and the trace 134, and the auxiliary groove 11 can extend in any direction. In other words, when the first isolation groove 101 extending in the x direction is provided in the first sub-region E1, the auxiliary groove 11 in the first sub-region E1 can extend in any direction. For example, it can extend in the y direction, extend in the x direction, etc.

[0116] The auxiliary groove 11 can reduce the length of cracks in the first sub-region E1. If the edge of the first sub-region E1 is impacted by an external force, the external force may cause fine lines to appear on the side of the first isolation groove 101 away from the display region G. The auxiliary groove 11 can block the fine lines and prevent the fine lines from extending, further reducing the impact of the aforementioned external force on the display region G, and having the effect of protecting the display region G.

[0117] It can be understood that the shape of the first isolation groove 101 is not limited to the shapes in the (1) diagram, (2) diagram, (3) diagram, and (4) diagram of FIG. 5. For example, the shape of the first isolation groove 101 can also be "凵", S-shaped, etc.

[0118] Please return to Figure 4a. In some embodiments, the encapsulation layer 131 may further be provided with a groove 08, and at least a portion of the groove 08 is located in the first sub-area E1. The opening of the groove 08 faces the light-emitting side of the display panel 130. In other words, the opening of the groove 08 is along the z-direction, and the opening is away from the first substrate layer 132. Along the y-direction, the groove 08 is located between the first isolation groove 101 and the wiring 134. The groove 08 is filled with an organic substance 09. If the first sub-area E1 is impacted by an external force, the cracks caused by the external force can be blocked by the first isolation groove 101, preventing the cracks from extending to the area where the groove 08 is located. The organic substance 09 filled in the groove 08 can buffer the external force transmitted to the area where the groove 08 is located, and further reduce the impact of the external force on the wiring 134 and the pixel 133. In this way, the groove 08 has the effect of strengthening the protection of the display area G.

[0119] For example, the organic material 09 filled in the groove 08 may be epoxy resin or glue, etc. In the embodiment of the present application, the organic material 09 is not limited to being located only in the groove 08. For example, part of the organic material 09 may be located outside the groove 08. For example, during the process of filling the organic material 09, part of the organic material 09 may be allowed to overflow.

[0120] The embodiment of the present application does not limit the shape of the extension path of the groove 08. For example, the shape of the extension path of the groove 08 can be a straight line, a curve, or a broken line. The shape of the groove 08 can be the same as the shape of the first isolation groove 101 in Figures (1), (2), (3), and (4) of Figure 5 above.

[0121] The present embodiment does not limit the number of grooves 08. For example, the number of grooves 08 can be one, two, three, or more. In embodiments where there are multiple grooves 08, the multiple grooves 08 can be spaced apart along the y-direction. Alternatively, the multiple grooves 08 can be spaced apart along the x-direction.

[0122] In some embodiments, along the y-direction, the first isolation trench 101 may be located between the groove 08 and the trace 134 . In other words, the distance between the groove 08 and the display area G may be greater than the distance between the first isolation trench 101 and the display area G. In this way, the groove 08 may also mitigate the effects of external forces on the trace 134 and the pixel 133 .

[0123] For example, the entire groove 08 may be located in the first sub-region E1 , or part of the groove 08 may be located in the first sub-region E1 , and part of the groove 08 may extend into the second sub-region E2 , or part of the groove 08 may extend into the third sub-region E3 .

[0124] The embodiment of the present application does not limit the size of the groove 08 along the y-direction. For example, the maximum size of the groove 08 along the y-direction can be 0.1 mm to 1 mm. For example, the maximum size of the groove 08 along the y-direction can be 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm.

[0125] Returning to Figure 4a, in some embodiments, the portion of the encapsulation layer 131 located in the second sub-area E2 may also be provided with an isolation trench. For example, the second sub-area E2 is provided with a fifth isolation trench 105. The fifth isolation trench 105 is located in the encapsulation layer 131 and penetrates the encapsulation layer 131 along the z-direction. At least a portion of the fifth isolation trench 105 is located in the second sub-area E2. Along the x-direction, the trace 134 is located between the fifth isolation trench 105 and the plurality of pixels 133. Alternatively, along the y-direction, the trace 134 is located between the fifth isolation trench 105 and the plurality of pixels 133. In this way, when the edge of the encapsulation layer 131 located in the second sub-area E2 is subjected to force and cracks develop in the encapsulation layer 131, the fifth isolation trench 105 can block the crack, preventing it from extending to the area of ​​the encapsulation layer 131 located where the trace 134 and the pixels 133 are located. The fifth isolation trench 105 protects the encapsulation layer 131 in the display area G, effectively reducing the impact of collisions on the display module.

[0126] For example, the fifth isolation trench 105 may be disposed around the periphery of the display area G, and at least partially located in the second sub-area E2. This effectively protects the portion of the encapsulation layer 131 located in the second sub-area E2. Even if a crack develops at the edge of the encapsulation layer 131 located in the second sub-area E2, the crack cannot extend beyond the fifth isolation trench 105 to the portion of the encapsulation layer 131 located in the display area G.

[0127] In some embodiments, the entire fifth isolation trench 105 extends along the x-direction. Then, along the y-direction, the trace 134 is located between the fifth isolation trench 105 and the plurality of pixels 133. In some embodiments, the entire fifth isolation trench 105 extends along the y-direction. Then, along the x-direction, the trace 134 is located between the fifth isolation trench 105 and the plurality of pixels 133. In some embodiments, the fifth isolation trench 105 extends partially along the x-direction and partially along the y-direction. Along the radial direction of the display area G, the trace 134 is located between the fifth isolation trench 105 and the plurality of pixels 133. The radial direction of the display area G is the direction from the geometric center of the display area G toward the non-display area.

[0128] For example, similar to the aforementioned arrangement of at least a portion of the first isolation trench 101 in the first sub-region E1, at least a portion of the fifth isolation trench 105 in the second sub-region E2 may include: the entire fifth isolation trench 105 in the second sub-region E2. Alternatively, a portion of the fifth isolation trench 105 in the second sub-region E2 and a portion of the fifth isolation trench 105 in the first sub-region E1. Alternatively, a portion of the fifth isolation trench 105 in the second sub-region E2 and a portion of the fifth isolation trench 105 in the fourth sub-region E4 may be located.

[0129] The embodiment of the present application does not limit the extension path of the fifth isolation trench 105. For example, the extension path of the fifth isolation trench 105 can be a straight line, a curve, or a broken line.

[0130] In some embodiments, similar to the first isolation trench 101 , the fifth isolation trench 105 may also include a cavity. The cavity may be filled with air, nitrogen, helium, or the like, or may be a vacuum.

[0131] The present embodiment does not limit the number of fifth isolation trenches 105. The number of fifth isolation trenches 105 can be one, two, three, or more. In an embodiment in which there are multiple fifth isolation trenches 105, the multiple fifth isolation trenches 105 can be spaced apart and distributed along the x-direction in the second sub-region E2 of the encapsulation layer 131, and the multiple fifth isolation trenches 105 can be spaced apart and distributed along the y-direction in the second sub-region E2 of the encapsulation layer 131. This embodiment does not limit this.

[0132] In the embodiment where part of the fifth isolation trench 105 is located in the first sub-area E1, the fifth isolation trench 105 is connected to the first isolation trench 101 along the x-direction, and the fifth isolation trench 105 and the first isolation trench 101 can be considered a single isolation trench. The fifth isolation trench 105 and the first isolation trench 101 can be formed simultaneously in the same process, simplifying the process flow. Furthermore, the connected fifth isolation trench 105 and the first isolation trench 101 can protect the display area G from the circumference of the display area G, thereby reducing the impact of collisions on the first sub-area E1 and the second sub-area E2 on the display area G.

[0133] In some embodiments, along the x-direction, the fifth isolation trench 105 and the first isolation trench 101 may not be connected. For example, the fifth isolation trench 105 and the first isolation trench 101 are spaced apart from each other along the x-direction.

[0134] The embodiment of the present application does not limit the size and formation method of the fifth isolation trench 105. Please refer to the description of the size and formation method of the first isolation trench 101.

[0135] In some embodiments, the second sub-area E2 may also include a groove 08. Groove 08 is filled with an organic material 09 and is located between the fifth isolation trench 105 and the trace 134. The structure of groove 08 is described above with reference to groove 08 in the first sub-area E1. The relationship between groove 08 and the fifth isolation trench 105 is described above with reference to groove 08 and the first isolation trench 101, and will not be repeated here.

[0136] Likewise, along the x direction, the groove 08 of the encapsulation layer 131 located in the second sub-region E2 and the groove 08 of the encapsulation layer 131 located in the first sub-region E1 may be connected or not connected.

[0137] Figure 6a is a schematic diagram of a structure of multiple isolation trenches provided in an embodiment of the present application. Referring to Figure 6a , similar to the second sub-area E2, in some embodiments, the third sub-area E3 may also be provided with an isolation trench. A sixth isolation trench 106 is provided in the third sub-area E3. The sixth isolation trench 106 is located within the encapsulation layer 131 and extends through the encapsulation layer 131 along the z-direction (as shown in Figure 5 ). The sixth isolation trench 106 is at least partially located within the third sub-area E3. Along the x-direction, a trace 134 (as shown in Figure 5 ) is located between the sixth isolation trench 106 and the plurality of pixels 133 (as shown in Figure 5 ), or, along the y-direction, between the sixth isolation trench 106 and the plurality of pixels 133. In this manner, if a crack forms in the encapsulation layer 131 due to stress at the edge of the third sub-area E3, the sixth isolation trench 106 can block the crack, preventing it from extending from the edge of the third sub-area E3 to the portion of the encapsulation layer in the display area G. The sixth isolation trench 106 protects the display area G.

[0138] The shape and extension path of the sixth isolation trench 106 refer to the description of the fifth isolation trench 105. The relationship between the sixth isolation trench 106 and the first isolation trench 101 refers to the relationship between the fifth isolation trench 105 and the first isolation trench 101, which will not be repeated here.

[0139] Similar to the second sub-area E2, in some embodiments, the third sub-area E3 may also be provided with a groove 08 (as shown in FIG4a). Groove 08 is filled with an organic material 09 (as shown in FIG4a). The structure of groove 08 is described above for groove 08 in the third sub-area E3 and will not be repeated here.

[0140] In some embodiments, the sixth isolation trench 106 may also include a cavity, which may be filled with air, nitrogen, helium, or the like, or may be a vacuum.

[0141] As described above, the fourth sub-area E4 is located at one end of the bending region W0. In some embodiments, an isolation trench may also be provided in the fourth sub-area E4. For example, the isolation trench provided in the fourth sub-area E4 is defined as a seventh isolation trench 107. The seventh isolation trench 107 provided in the fourth sub-area E4 protects the fourth sub-area E4. When an external force is applied to the edge of the fourth sub-area E4, the force may cause cracks in the fourth sub-area E4. The seventh isolation trench 107 prevents the cracks caused by the external force from extending toward the display area G, thereby protecting the display area G.

[0142] The structure and shape of the seventh isolation trench 107 in the fourth sub-area E4 are described in detail with reference to the first isolation trench 101 in the first sub-area E1. Similarly, in some embodiments, the fourth sub-area E4 may also be provided with a groove 08 filled with an organic material 09. The structure and position of groove 08 are described in detail with reference to the groove 08 in the first sub-area E1, and will not be further elaborated here.

[0143] In some embodiments, along the x-direction, the seventh isolation trench 107 can communicate with the fifth isolation trench 105. In some embodiments, along the x-direction, the seventh isolation trench 107 can communicate with the sixth isolation trench 106.

[0144] In FIG. 6 a , the seventh isolation trench 107 and the fifth isolation trench 105 are spaced apart along the x-direction, and the seventh isolation trench 107 and the sixth isolation trench 106 are spaced apart along the x-direction.

[0145] FIG6 b is another schematic diagram of the structure of multiple isolation trenches provided in an embodiment of the present application. Referring to FIG6 b , first isolation trench 101 and fifth isolation trench 105 are connected along the x-direction, seventh isolation trench 107 and fifth isolation trench 105 are connected along the x-direction, and seventh isolation trench 107 and sixth isolation trench 106 are connected along the x-direction. In FIG6 b , first isolation trench 101, fifth isolation trench 105, sixth isolation trench 106, and seventh isolation trench 107 can be considered a single isolation trench. First isolation trench 101, fifth isolation trench 105, sixth isolation trench 106, and seventh isolation trench 107 can be formed simultaneously in the same process, simplifying the process flow.

[0146] In addition, as shown in Figure 6b, the entire non-display area is provided with an isolation trench. Cracks at any edge of the non-display area can be isolated by the isolation trench, effectively ensuring the integrity of the encapsulation layer within the display area, ensuring the encapsulation performance of pixels and traces, and greatly reducing the impact of collisions on the encapsulation performance of the encapsulation layer.

[0147] It is understood that in some embodiments, the first isolation trench 101 and the fifth isolation trench 105 are connected along the x-direction, and the first isolation trench 101 and the sixth isolation trench 106 are spaced apart along the x-direction. Alternatively, the seventh isolation trench 107 and the sixth isolation trench 106 are connected along the x-direction, and the first isolation trench 101 and the fifth isolation trench 105 are spaced apart along the x-direction.

[0148] It is understood that the fifth isolation trench 105 of the encapsulation layer in the second sub-area E2 and the sixth isolation trench 106 of the encapsulation layer in the third sub-area E3 are not essential. The encapsulation layer 131 may not be provided with the aforementioned fifth isolation trench 105 or the aforementioned seventh isolation trench 107.

[0149] As described above, the display module 100 further includes a first substrate layer 132. The present embodiment of the present application does not limit the material of the first substrate layer 132. For example, the material of the first substrate layer 132 may include polyimide (PI). In some embodiments, the first substrate layer 132 may also be provided with an isolation trench.

[0150] Figure 7a illustrates another cross-sectional view of a display panel 130 according to an embodiment of the present application. In Figure 7a, a second isolation trench 102 is defined within the first substrate layer 132. At least a portion of the second isolation trench 102 is located within the first sub-region E1, and the second isolation trench 102 extends through the first substrate layer 132 along its thickness. Along the y-direction, traces 134 are located between the second isolation trench 102 and the plurality of pixels 133.

[0151] Similar to the aforementioned first isolation trench 101, the second isolation trench 102 can prevent cracks on one side of the second isolation trench 102 on the first substrate layer 132 from extending across the second isolation trench 102 to the other side of the second isolation trench 102. This prevents cracks on the side of the second isolation trench 102 on the first substrate layer 132 away from the display area G from extending into the display area G, thereby preventing cracks at the edge of the first sub-area E1 on the first substrate layer 132 from affecting the pixels 133 and traces 134. This effectively reduces the impact of collisions on the display module 100.

[0152] The embodiment of the present application does not limit the structure, extension path, and size of the second isolation trench 102. The structure, extension path, and size of the second isolation trench 102 are similar to the description of the first isolation trench 101.

[0153] In some embodiments, as shown in FIG7a , the first isolation groove 101 and the second isolation groove 102 are connected along the thickness direction of the encapsulation layer 131, that is, along the z direction. Along the z direction, the first isolation groove 101 and the second isolation groove 102 can be regarded as an isolation groove, which penetrates the encapsulation layer 131 and the first substrate layer 132 along the z direction. In this way, the first isolation groove 101 and the second isolation groove 102 can be formed together in the same process, simplifying the process flow. For example, the first isolation groove 101 and the second isolation groove 102 are formed together by laser processing or etching. In addition, the first isolation groove 101 and the second isolation groove 102 can block the cracks at the edge of the first sub-area E1 from extending to the display area G. Effectively improve the impact of external forces such as collisions on the display area G.

[0154] It is understood that in the embodiment where the first isolation trench 101 and the second isolation trench 102 are connected along the thickness direction of the encapsulation layer 131 , the extension paths and sizes of the first isolation trench 101 and the second isolation trench 102 are not limited to be the same.

[0155] In some embodiments, the first isolation trench 101 and the second isolation trench 102 may not be connected along the thickness direction of the encapsulation layer 131. For example, the vertical projections of the first isolation trench 101 and the second isolation trench 102 on the first sub-region E1 do not overlap. Along the y-direction, the distance from the first isolation trench 101 to the display area G may be greater than the distance from the second isolation trench 102 to the display area G. Alternatively, along the y-direction, the distance from the first isolation trench 101 to the display area G may be less than the distance from the second isolation trench 102 to the display area G.

[0156] In some embodiments, the second isolation trench 102 may also include a cavity, which may be filled with air, nitrogen, helium, or the like, or may be a vacuum.

[0157] The number, shape and structure of the second isolation trenches 102 on the first substrate layer 132 are described in the description of the first isolation trenches 101 on the encapsulation layer 131 , and are not repeated here.

[0158] Similar to the aforementioned fifth isolation trench 105, sixth isolation trench 106 (as shown in FIG6a), and seventh isolation trench 107, in some embodiments, isolation trenches may also be provided in the second sub-area E2, third sub-area E3, and fourth sub-area E4 of the first substrate layer 132. The shape and structure of the isolation trench in the second sub-area E2 of the first substrate layer 132 can be found in the description of the fifth isolation trench 105. The shape and structure of the isolation trench in the third sub-area E3 of the first substrate layer 132 can be found in the description of the sixth isolation trench 106. The shape and structure of the isolation trench in the fourth sub-area E4 of the first substrate layer 132 can be found in the description of the seventh isolation trench 107. The relationship between the various isolation trenches on the first substrate layer 132 can be found in the relationship between the isolation trenches in FIG6a and FIG6b.

[0159] As shown in FIG7a , in some embodiments, the display panel 130 may further include an isolation layer (barrier) 135, and the first substrate layer 132 is located between the isolation layer 135 and the encapsulation layer 131. The isolation layer 135 has an isolation function, which can prevent moisture and the like from entering between the first substrate layer 132 and the encapsulation layer 131 and affecting the performance of the pixels 133 and the traces 134. For example, the material of the isolation layer 135 may include silicon nitride or silicon oxide.

[0160] As shown in FIG7a , in some embodiments, the isolation layer 135 may also be provided with an isolation trench. Exemplarily, the isolation layer 135 is provided with a third isolation trench 103, which extends through the isolation layer 135 along the thickness direction of the isolation layer 135. At least a portion of the third isolation trench 103 is located in the first sub-region E1, and along the y-direction, the trace 134 is located between the third isolation trench 103 and the pixel 133. The third isolation trench 103 can prevent cracks on the isolation layer 135 from crossing the third isolation trench 103. Cracks in the isolation layer 135 at the edge of the first sub-region E1 can be prevented from extending to the display area G. The isolation performance of the third isolation trench 103 can ensure the integrity of the isolation layer 135 in the display area G, thereby improving the impact of the isolation layer 135 on the pixels 133 and trace 134 after a collision.

[0161] In some embodiments, the third isolation trench 103 may also include a cavity, which may be filled with air, nitrogen, helium, or the like, or may be a vacuum.

[0162] The number, shape and structure of the third isolation trenches 103 on the isolation layer 135 can be found in the description of the first isolation trenches 101 on the encapsulation layer 131 , and will not be repeated here.

[0163] The same applies to the second isolation trench 102 on the first substrate layer 132. The structure and shape of the third isolation trench 103 refer to the description of the first isolation trench 101 and are not repeated here. Similar to the sixth isolation trench 106 and the fifth isolation trench 105, in some embodiments, isolation trenches may also be provided in the second sub-area E2, the third sub-area E3, and the fourth sub-area E4 on the isolation layer 135. The relationship between the isolation trenches on the isolation layer 135 can be found in the description of the isolation trenches in Figures 6a and 6b above and are not repeated here.

[0164] In some embodiments, as shown in FIG7a , the third isolation trench 103 is connected to the first isolation trench 101 along the thickness direction of the encapsulation layer 131 . In this way, the third isolation trench 103 and the first isolation trench 101 can be formed together in the same process, simplifying the process flow. For example, the third isolation trench 103 and the first isolation trench 101 are formed together by laser processing or etching. In addition, the third isolation trench 103 and the first isolation trench 101 can block the cracks at the edge of the first sub-region E1 from extending toward the display region G. This effectively reduces the impact of external forces such as collisions on the display region G.

[0165] Because the first substrate layer 132 is located between the insulating layer 135 and the encapsulation layer 131, the third isolation trench 103 is located on the insulating layer 135, and the first isolation trench 101 is located on the encapsulation layer 131. Along the thickness direction of the encapsulation layer 131, the third isolation trench 103 and the first isolation trench 101 are connected. Therefore, an isolation trench connecting the third isolation trench 103 and the first isolation trench 101 is provided on the first substrate layer 132. The isolation trench connecting the third isolation trench 103 and the first isolation trench 101 on the first substrate layer 132 can be the aforementioned second isolation trench 102. Thus, the second isolation trench 102, the third isolation trench 103, and the first isolation trench 101 can be considered as a single isolation trench. Alternatively, the isolation trench on the first substrate layer 132 connecting the third isolation trench 103 and the first isolation trench 101 can be spaced apart from the second isolation trench 102. In other words, two spaced-apart isolation trenches can be set on the first substrate layer 132, one isolation trench being the second isolation trench 102, and the other isolation trench being the isolation trench connecting the third isolation trench 103 and the first isolation trench 101.

[0166] In some embodiments, the first isolation trench 101 and the third isolation trench 103 may not be connected along the thickness direction of the encapsulation layer 131. On this basis, the third isolation trench 103 and the second isolation trench 102 may be connected or not connected.

[0167] In some embodiments, the display panel 130 may further include a second substrate layer 136 , and the insulating layer 135 is located between the first substrate layer 132 and the second substrate layer 136 . The second substrate layer 136 may provide support for the pixels 133 and the traces 134 .

[0168] In some embodiments, the second substrate layer 136 may also be provided with an isolation trench. Specifically, the second substrate layer 136 is provided with a fourth isolation trench 104, which extends through the second substrate layer 136 along its thickness. At least a portion of the fourth isolation trench 104 is located in the first sub-region E1. Along the y-direction, the trace 134 is located between the fourth isolation trench 104 and the pixel 133. The fourth isolation trench 104 prevents cracks at the edge of the first sub-region E1 of the second substrate layer 136 from extending beyond the fourth isolation trench 104 into the display area G. This ensures the support performance of the portion of the second substrate layer 136 located in the display area G, effectively protecting the display area G.

[0169] In some embodiments, the fourth isolation trench 104 may also include a cavity, which may be filled with air, nitrogen, helium, or the like, or may be a vacuum.

[0170] In some embodiments, as shown in FIG7a , the first isolation trench 101 and the fourth isolation trench 104 are connected along the thickness direction of the encapsulation layer 131. Because the isolation layer 135 is located between the first substrate layer 132 and the second substrate layer 136, and the first substrate layer 132 is located between the encapsulation layer 131 and the isolation layer 135, the first isolation trench 101 and the fourth isolation trench 104 penetrate the first substrate layer 132, the second substrate layer 136, the encapsulation layer 131 and the isolation layer 135 along the thickness direction of the encapsulation layer 131. In this way, the first isolation trench 101 and the fourth isolation trench 104 can be formed together in the same process, simplifying the process flow. In addition, the first isolation trench 101 and the fourth isolation trench 104 can block the cracks at the edge of the first sub-area E1 from extending to the display area G. This effectively improves the impact of external forces such as collisions on the display area G.

[0171] In some embodiments, the first isolation trench 101, the second isolation trench 102, the third isolation trench 103, and the fourth isolation trench 104 are connected along the thickness direction (i.e., the z-direction) of the encapsulation layer 131. Therefore, the first isolation trench 101, the second isolation trench 102, the third isolation trench 103, and the fourth isolation trench 104 can be formed together in the same process.

[0172] It can be understood that in the embodiments of the present application, the shapes and extension paths of the first isolation trench 101, the second isolation trench 102, the third isolation trench 103 and the fourth isolation trench 104 may not be exactly the same, and the shapes and extension paths of any two isolation trenches do not affect each other and can be independently set according to needs.

[0173] The number, shape and structure of the fourth isolation trenches 104 on the first substrate layer 132 are described in the description of the first isolation trenches 101 on the packaging layer 131 , and are not repeated here.

[0174] Similarly, similar to the sixth isolation trench 106 and the fifth isolation trench 105 on the aforementioned encapsulation layer 131, in some embodiments, isolation trenches may also be provided on the second sub-area E2, the third sub-area E3, and the fourth sub-area E4 on the second substrate layer 136. The relationship of the isolation trenches on the second substrate layer 136 can be referred to the relationship of the isolation trenches in the aforementioned Figures 6a and 6b, and will not be repeated here.

[0175] Figure 7b is another schematic diagram of the cross-sectional structure of the display panel 130 provided in an embodiment of the present application. The difference between Figure 7b and Figure 7a is that the relationship between the various isolation grooves is different. Please refer to Figure 7a. No isolation groove is provided in the insulating layer 135. Along the thickness direction of the encapsulation layer 131, the first isolation groove 101 and the second isolation groove 102 are connected. The second substrate layer 136 is provided with a fourth isolation groove 104. Along the thickness direction of the encapsulation layer 131, the second isolation groove 102 and the fourth isolation groove 104 are not connected. It can be understood that the positional relationship of the various isolation grooves on the display panel 130 is not limited to the examples shown in Figures 7b and 7a.

[0176] As shown in Figure 7b, in some embodiments, the display panel 130 may further include a touch sensor 137. The touch sensor 137 is also known as a touch sensor on encapsulation (TOE). Along the z-direction, the encapsulation layer 131 is located between the touch sensor 137 and the plurality of pixels 133. The touch sensor 137 is electrically connected to a printed circuit board or a flexible circuit board. Exemplarily, the touch sensor 137 may be formed by a panel that senses changes in capacitance. For example, the touch sensor 137 may include two transparent electrode layers and an insulating layer located between the two transparent electrode layers, one transparent electrode layer extending along the x-direction and the other transparent electrode layer extending along the y-direction to form a grid pattern of electrodes. The material of the transparent electrode layers may include indium tin oxide. The touch sensor 137 senses the slight change in current generated when a user touches the surface of the display module 100 and determines the touch location. In some embodiments, the touch sensor 137 may be a resistive film, ultrasonic, or infrared touch screen panel.

[0177] Figure 8a is a cross-sectional schematic diagram of the AA surface in Figure 3a. Referring to Figure 8a, in some embodiments, the display module 100 may further include a cover plate 110. The cover plate 110 and the display panel 130 are stacked along the z direction. The cover plate 110 is located on the light-emitting side of the display panel 130, and the encapsulation layer 131 (as shown in Figure 7b) is located between the cover plate 110 and the first substrate layer 132 (as shown in Figure 7b). The cover plate 110 is used to protect and dustproof the display panel 130. The cover plate 110 can be a glass cover plate (cover Glass), or it can be replaced by a cover plate of other materials, such as an ultra-thin glass material cover plate, a polyethylene terephthalate (PET) material cover plate, etc. In some embodiments, the cover plate 110 can provide tactile and force feedback to the user when the user touches it.

[0178] Figure 8b is a schematic cross-sectional view of plane BB in Figure 3a. Referring to Figure 8b, in some embodiments, the display module 100 may further include a polarizer (POL) 150. The polarizer 150 is located between the cover plate 110 and the display panel 130. The polarizer 150 is used to polarize light incident on the display panel 130 and light reflected from the display panel 130. In some embodiments, the display module 100 may not be provided with the polarizer 150, and a COE (color filter on encapsulation) structure may be used in place of the aforementioned polarizer 150. For example, the COE structure can be used to solve the problem of light reflection and light transmission of the display panel 130.

[0179] In some embodiments of the present application, an isolation groove may also be provided on the polarizing layer 150. FIG8c is another cross-sectional schematic diagram of the BB plane in FIG3a. In FIG8c, an eighth isolation groove 108 is provided on the polarizing layer 150. The eighth isolation groove 108 penetrates the polarizing layer 150 along the z-direction. The vertical projection of the eighth isolation groove 108 on the display panel 130 overlaps with the first sub-area E1 (as shown in FIG7b). In this way, the eighth isolation groove 108 can prevent cracks at the edge of the polarizing layer 150 from extending into the interior of the display panel 130, thereby protecting the polarizing layer 150 located in the display area G (as shown in FIG7b).

[0180] The number, shape and structure of the eighth isolation trench 108 can be found in the description of the first isolation trench 101 , which will not be repeated here.

[0181] In some embodiments, the display module 100 may further include a back film (BF) 120. The back film 120 and the display panel 130 are stacked along the z-direction. A first substrate layer 132 (as shown in FIG. 7B ) is located between the encapsulation layer 131 (as shown in FIG. 7B ) and the back film 120. The back film 120 is used to protect and prevent dust from the display panel 130. For example, the material of the back film 120 may be polyethylene terephthalate (PET) or polyimide.

[0182] In some embodiments of the present application, an isolation groove may also be provided on the back film 120. As shown in FIG8c, in some embodiments, a ninth isolation groove 109 is provided on the back film 120, and the ninth isolation groove 109 penetrates the back film 120 along the z direction. The vertical projection of the ninth isolation groove 109 on the display panel 130 overlaps with the first sub-area E1 (as shown in FIG7b). In this way, in the process of opening the first isolation groove 101, the back film 120 may not be avoided. For example, the ninth isolation groove is formed on the back film 120 at the same time as the first isolation groove 101 is opened. Among them, the number, shape and structure of the ninth isolation groove 109 are described in the description of the first isolation groove 101, which will not be repeated here.

[0183] In some embodiments, the display module 100 may further include a supporting layer 140 , wherein the supporting layer 140 and the display panel 130 are stacked along the z direction, and the first substrate layer 132 (as shown in FIG. 7 b ) is located between the encapsulation layer 131 (as shown in FIG. 7 b ) and the supporting layer 140 .

[0184] Figure 9a is a schematic structural diagram of the support layer 140 and the display panel 130 provided in an embodiment of the present application. In Figure 9a, the support layer 140 includes a first portion 141, a second portion 142, and a third portion 143. The first portion 141, the second portion 142, and the third portion 143 are connected in sequence. For example, the first portion 141, the second portion 142, and the third portion 143 can be connected to form an integral molded part. When the display module 100 is in a flattened state, the first portion 141, the second portion 142, and the third portion 143 are arranged in sequence along the x-direction. When the display module 100 is in a folded state, the second portion 142 is in a bent state. When the display module 100 is in a flattened state, the second portion 142 is in a flattened state, and the vertical projection of the bending area W0 on the support layer 140 overlaps with the second portion 142. In this way, when the display module 100 is adjusted from the flat state to the folded state, the second portion 142 is bent, making the display module 100 easier to fold and the folding process of the electronic device more labor-saving.

[0185] The vertical projection of the bending region W0 on the support layer 140 overlapping with the second portion 142 includes: the vertical projection of the entire bending region W0 on the support layer 140 is within the second portion 142. For example, the vertical projection of the bending region W0 on the support layer 140 overlaps with the second portion 142. Alternatively, the vertical projection of a portion of the bending region W0 on the support layer 140 is located within the second portion 142, while the vertical projection of a portion of the bending region W0 on the support layer 140 is located outside the second portion 142 (for example, within the first portion 141 or within the third portion 143).

[0186] The present embodiment does not limit the material of the support layer 140. For example, the material of the support layer 140 may include at least one of copper, a copper alloy, aluminum, an aluminum alloy, stainless steel, or carbon fiber. The support layer 140 is not limited to a single layer structure. For example, the support layer 140 may include multiple layers stacked along the z-direction, and the materials and thicknesses of the multiple layers may vary.

[0187] For example, when the display module 100 is adjusted from the flattened state to the folded state, the second portion 142 bends, which can be achieved in various ways. For example, the elastic modulus of the second portion 142 is greater than that of the first portion 141, and the elastic modulus of the second portion 142 is greater than that of the third portion 143. In other words, the second portion 142 is more flexible than the first portion 141, and the second portion 142 is more flexible than the third portion 143. Alternatively, the second portion 142 is formed of a more flexible material than the first portion 141 and the third portion 143. In this way, the second portion 142 is easier to bend than the first portion 141.

[0188] Figure 9b is an enlarged schematic diagram of point K in Figure 9a. Referring to Figure 9a, in some embodiments, the second portion 142 is provided with a plurality of groove structures 144, each extending along the y-direction. The groove structures 144 can relieve stress during bending of the second portion 142, preventing stress concentration that could cause cracks or tears in the second portion 142. The groove structures 144 impart an easily bendable characteristic to the second portion 142. During bending of the second portion 142, the groove structures 144 extending along the y-direction can relieve stress in the second portion 142 along the x-direction, further reducing the risk of cracks in the second portion 142.

[0189] The groove structure 144 extending along the y-direction means that the groove structure 144 has the largest length along the y-direction. The extension path of the groove structure 144 is not limited to a straight line along the y-direction. For example, the extension path of the groove structure 144 may also be a curve or a broken line along the y-direction.

[0190] The embodiment of the present application does not limit the shape of the groove structure 144. For example, the shape of the groove structure 144 can be circular, square, oval, triangular, bar-shaped, or irregular, etc. The shapes of multiple groove structures 144 can be the same or different.

[0191] The present embodiment does not limit the arrangement of the plurality of groove structures 144. For example, a plurality of groove structures 144 may be spaced apart along the x-direction, and a plurality of groove structures 144 may be spaced apart along the y-direction. Alternatively, in some embodiments, the plurality of groove structures 144 may be randomly distributed in the second portion 142.

[0192] In some embodiments, the groove structure 144 extends through the support layer 140 along its thickness. In other words, the groove structure 144 can be considered a pore structure, and the second portion 142, including the plurality of pore structures, can be considered a mesh structure. During the bending process of the second portion 142, the groove structure 144 extending through the support layer 140 can better relieve internal stress and prevent the second portion 142 from tearing during the bending process. In some embodiments, the groove structure 144 may not extend through the support layer 140 along its thickness.

[0193] In some embodiments, the second portion 142 may not be provided with the aforementioned groove structure 144. For example, the thickness of the second portion 142 is smaller than the thickness of the first portion 141, so that the second portion 142 is easier to bend than the first portion 141.

[0194] In some embodiments, the thickness of the second portion 142 is uniform along the x-direction. In some embodiments, the thickness of the second portion 142 can be uneven along the x-direction, for example, the thickness of the second portion 142 first decreases and then increases. Similarly, the thickness of the second portion 142 is smaller than the thickness of the third portion 143, making the second portion 142 more bendable than the third portion 143.

[0195] Referring back to FIG. 9 a , illustratively, in some embodiments, the display module 100 may further include a first adhesive layer 001, which is located between the cover plate 110 and the polarizing layer 150. The cover plate 110 and the polarizing layer 150 are bonded together by the first adhesive layer 001. The first adhesive layer 001 may be, for example, an optically clear adhesive (OCA).

[0196] In some embodiments, the display module 100 may further include a second adhesive layer 002, which is located between the display panel 130 and the polarizing layer 150. The display panel 130 and the polarizing layer 150 are bonded together by the second adhesive layer 002. The second adhesive layer 002 may be, for example, optical adhesive.

[0197] In some embodiments, the display module 100 may further include a third adhesive layer 003, which is located between the display module 100 and the backing film 120. The display module 100 and the backing film 120 are bonded together via the third adhesive layer 003. The material of the third adhesive layer 003 may include a pressure sensitive adhesive (PSA), such as an epoxy pressure sensitive adhesive or a silicone pressure sensitive adhesive.

[0198] In some embodiments, the display module 100 may further include a fourth adhesive layer 004, which is located between the support layer 140 and the back film 120. The support layer 140 and the back film 120 are bonded together by the fourth adhesive layer 004. The material of the fourth adhesive layer 004 may include a pressure-sensitive adhesive.

[0199] Returning to Figure 1a, in some embodiments, the electronic device 10 may further include a first protective shell 201 and a second protective shell 202. The first protective shell 201 and the display module 100 are stacked along the z-direction. The first protective shell 201 covers the edge of the first region W1. This prevents the edge of the first region W1 of the display module 100 from being exposed, thereby protecting the edge of the first region W1 of the display module 100 from damage caused by collisions or impacts. It also prevents impurities such as liquid and dust from entering the display module 100 and affecting the reliability of the electronic device 10.

[0200] The edge of the first area W1 includes at least a portion of the non-display area within the first area W1. In some embodiments, the first protective shell 201 is connected to the first middle frame 210 (as shown in FIG. 2 ). Together, the first protective shell 201 and the first middle frame 210 enclose the edge of the display module 100 in the first area W1, thereby protecting the edge of the display module 100 in the first area W1.

[0201] In the embodiment where the display module 100 includes the cover plate 110 , the cover plate 110 is located between the display panel 130 and the first protective shell 201 , and the first protective shell 201 covers the edge of the cover plate 110 located in the first area W1 .

[0202] Figure 10a is a schematic diagram illustrating the structure of the bending region W0 and the first protective shell 201 according to an embodiment of the present application. Referring to Figure 10a , in some embodiments of the present application, the first protective shell 201 may extend to the region where the first isolation trench 101 is located. The region where the first isolation trench 101 is located in Figure 10a is intended to illustrate the positional relationship between the first isolation trench 101 and the first protective shell 201 in the x- and y-directions, and does not indicate that the first isolation trench 101 is located on the surface of the display module 100.

[0203] Figure 10b is a schematic cross-sectional view taken along plane SS in Figure 10a. Referring to Figure 10b , the first protective shell 201 partially covers the first isolation trench 101. The vertical projection of the first protective shell 201 on the display panel 130 partially overlaps the first isolation trench 101. The first protective shell 201 protects the edges of the first region W1 from damage. The first isolation trench 101 prevents cracks caused by external forces from extending to the display area and impacting the performance and lifespan of the display module 100.

[0204] Likewise, the second protective shell 202 covers the edge of the second area W2 , thereby preventing the edge of the second area W2 of the display module 100 from being exposed, thereby preventing the edge of the second area W2 of the display module 100 from being damaged by collision or impact.

[0205] In an embodiment of the present application, the second protective shell 202 can extend to the area where the first isolation groove 101 is located. The second protective shell 202 covers part of the first isolation groove 101. Similarly, the first isolation groove 101 can prevent cracks caused by external forces from extending to the display area and affecting the performance and life of the display module 100. The first protective shell 201 covers part of the first isolation groove 101, and the second protective shell 202 covers part of the first isolation groove 101. The edges of the display module 100 that are not covered by the first protective shell 201 and the second protective shell 202 can be protected by the first isolation groove 101. After the edges of the display module 100 are subjected to external forces, the impact on the display area is relatively small. The first isolation groove 101, the first protective shell 201 and the second protective shell 202 better protect the performance of the display module 100 and reduce the impact of factors such as collision on the display module 100.

[0206] For example, the second protective shell 202 and the second middle frame 220 (as shown in FIG. 2 ) are connected to each other, and the second protective shell 202 and the second middle frame 220 together wrap the edge of the display module 100 in the second area W2 , thereby preventing the edge of the second area W2 of the display module 100 from being damaged by collisions or impacts.

[0207] It is understood that in some embodiments of the present application, the first protective shell 201 may not extend to the area where the first isolation slot 101 is located. The first protective shell 201 may not cover the first isolation slot 101. Alternatively, in some embodiments of the present application, the second protective shell 202 may not extend to the area where the first isolation slot 101 is located. The second protective shell 202 may not cover the first isolation slot 101.

[0208] As described above, in some embodiments, as shown in FIG6b , the first sub-area E1, the second sub-area E2, the third sub-area E3, and the fourth sub-area E4 of the display module 100 may be provided with isolation grooves. The isolation grooves serve to protect the display area G of the display module 100. Due to the presence of the isolation grooves, the electronic device 10 may not be provided with the first protective shell 201 and the second protective shell 202.

[0209] Figure 11a is a schematic diagram of the structure of another electronic device 10 provided in an embodiment of the present application. In Figure 11a, the end of the first middle frame 210 facing the light-emitting side of the electronic device 10 is a first peripheral edge 211. The first peripheral edge 211 is provided around the periphery of the first area W1 of the display module 100. The end of the second middle frame 220 facing the light-emitting side of the electronic device 10 is a second peripheral edge 221. The second peripheral edge 221 is provided around the periphery of the second area W2 of the display module 100.

[0210] Figure 11b is an enlarged schematic diagram of point M in Figure 11a. Referring to Figure 11b, the first peripheral edge 211 covers the side surfaces of the first region W1 along the thickness direction of the display module 100. In other words, the vertical projection of the first region W1 onto the first peripheral edge 211 lies within the first peripheral edge 211. As such, the first peripheral edge 211 mitigates damage to the side surfaces of the first region W1 along the thickness direction of the display module 100 from collisions. Thus, the first peripheral edge 211 protects the side surfaces of the first region W1 along the thickness direction of the display module 100.

[0211] Returning to Figure 11a , the positional relationship between the second peripheral edge 221 and the second region W2 is similar to the positional relationship between the first peripheral edge 211 and the first region W1 in Figure 11b . The second peripheral edge 221 covers the side surfaces of the second region W2 along the thickness direction of the display module 100. Thus, the second peripheral edge 221 protects the side surfaces of the second region W2 along the thickness direction of the display module 100.

[0212] Figure 11c is an enlarged schematic diagram of point N in Figure 11a. Referring to Figure 11c, when the display module 100 is flattened, the vertical projection of the first surrounding edge 211 on the display module 100 does not overlap with the display module 100. Thus, the first surrounding edge 211 does not block light from the display module 100 along the z-direction, enhancing the aesthetics of the display module 100. The vertical projection of the second surrounding edge 221 on the display module 100 does not overlap with the display module 100. Similarly, the second surrounding edge 221 does not block light from the display module 100 along the z-direction, enhancing the aesthetics of the display module 100. Exemplarily, a gap exists between the first surrounding edge 211 and the side surface of the display module 100 along the thickness direction of the display module 100. A gap exists between the second surrounding edge 221 and the side surface of the display module 100 along the thickness direction of the display module 100.

[0213] Similar to Figure 10a, the first isolation groove 101 indicated by the dotted line in Figure 11c is intended to illustrate the positional relationship between the first isolation groove 101 and the first middle frame 210 and other structures in the x-direction and y-direction, and does not indicate that the first isolation groove 101 is located on the surface of the display module 100.

[0214] In the example of Figure 11c, the encapsulation layer of the display module 100 is provided with isolation trenches as shown in Figure 6b. In other words, the first sub-area E1 has a first isolation trench 101, the second sub-area E2 has a fifth isolation trench 105, the third sub-area E3 has a sixth isolation trench 106, and the fourth sub-area E4 has a seventh isolation trench 107 (as shown in Figure 6b). The first isolation trench 101, the fifth isolation trench 105, the sixth isolation trench 106, and the seventh isolation trench 107 are all connected. When the edge of the electronic device is impacted, the isolation trenches in the first sub-area E1, the second sub-area E2, the third sub-area E3, and the fourth sub-area E4 can buffer the impact, effectively reducing the risk of cracks in the display area caused by the impact. This provides better protection for the electronic device. Therefore, additional structures connected to the first peripheral edge 211 to protect the non-display area can be omitted. For example, the aforementioned first protective shell can be omitted. Similarly, additional structures connected to the second peripheral edge 221 to protect the non-display area can be omitted. For example, the aforementioned second protective shell can be omitted. In this way, along the z direction, the light-emitting side of the non-display area of ​​the electronic device may not be covered by other protective structures, making the display module 100 more beautiful.

[0215] Thus, the arrangement of the first isolation trench 101 , the fifth isolation trench 105 , and the sixth isolation trench 106 on the display panel 130 of the display module 100 can eliminate the need for a protective structure in the non-display area of ​​the electronic device, thereby improving the aesthetics of the electronic device.

[0216] It is understandable that the display module 100 of FIG. 11 a may be provided with the third isolation trench 103 , the second isolation trench 102 , and the fourth isolation trench 104 shown in FIG. 7 a and FIG. 7 b .

[0217] Additionally, in some embodiments, the surface of the first peripheral edge 211 may be coated or plated. This coating or plated layer may have various patterns or colors, allowing the first peripheral edge 211 to also function as a decoration. Similarly, in some embodiments, the surface of the second peripheral edge 221 may be coated or plated. This coating or plated layer may have various patterns or colors, allowing the second peripheral edge 221 to also function as a decoration.

[0218] FIG11 d is a schematic diagram of the structure of the first middle frame 210 in FIG11 a. Referring to FIG11 d, the first middle frame 210 includes a middle plate 212 and a frame 213. The frame 213 is connected to the middle plate 212 on all sides. In some embodiments, the frame 213 and the middle plate 212 are connected as an integral molded part. The display module 100 (as shown in FIG11 a) is stacked with the middle plate 212. The frame 213 may have three sides surrounding the first area of ​​the display module 100, and the three sides may help fix the first area of ​​the display module 100.

[0219] In some embodiments, the frame 213 may include a metal portion 214 connected to the middle plate 212. The metal portion 214 surrounds three sides of the first region. The material of the metal portion 214 may be, for example, at least one of titanium and its alloys, aluminum and its alloys, copper and its alloys, iron and its alloys, or steel. Part of the metal portion 214 may be configured as an antenna radiator for the electronic device.

[0220] In some embodiments, the frame 213 may further include an adhesive portion 215. The adhesive portion 215 and the metal portion 214 are stacked along the z-direction. One end of the adhesive portion 215 along the z-direction is connected to the metal portion 214. This end of the adhesive portion 215 along the z-direction serves as the aforementioned first peripheral edge 211 (as shown in FIG11 b). As mentioned above, the first peripheral edge 211 can protect the sides of the display module 100. Clearly, the adhesive portion 215, serving as the first peripheral edge 211, can also protect the sides of the display module 100.

[0221] In some embodiments, when the display module 100 is flattened, the vertical projection of the adhesive portion 215 on the display module 100 does not overlap with the display module 100. In other words, the adhesive portion 215 does not cover the surface of the display module 100 facing the light-emitting side. When a user views the display module 100 along its thickness, the adhesive portion 215 does not obstruct the user's view, enhancing the aesthetics of the display module 100. Furthermore, by designing the adhesive portion 215 in different colors or combinations of different colors, the adhesive portion 215 can be made decorative, enhancing the aesthetics of the electronic device.

[0222] Exemplarily, the material of the aforementioned rubber part may include at least one of silicone, thermoplastic elastomer (TPE), thermoplastic polyurethanes (TPU), polyvinyl chloride (PVC) soft glue or rubber (such as silicone rubber, natural rubber, butadiene rubber, styrene-butadiene rubber, hexamethylene propylene rubber, etc.).

[0223] In the embodiment where the frame 213 does not include the aforementioned adhesive portion 215, one end of the metal portion 214 along the z-direction serves as the aforementioned first peripheral edge 211. The metal portion 214 does not cover the display module 100, which can make the electronic device more beautiful.

[0224] Please return to Figure 1a. In some embodiments, the electronic device 10 may further include a protective structure 30 (40). The protective structure 30 (40) may cover the side of the display module 100 located in the first sub-area E1, protect the side of the first sub-area E1, and prevent the side of the first sub-area E1 of the display module 100 from being exposed, thereby improving the appearance of the electronic device 10 and preventing the edge of the display module 100 from being damaged by collision, etc.

[0225] The protective structure 30 (40) can be implemented in a variety of ways.

[0226] The electronic device 10 may include two protective structures 30 (40), one protective structure 30 (40) protecting the first sub-area E1, and the other protective structure 30 (40) protecting the fourth sub-area E4. The positional relationship between the protective structure 30 (40) protecting the first sub-area E1 and the first sub-area E1 is the same as the positional relationship between the protective structure 30 (40) protecting the fourth sub-area E4 and the fourth sub-area E4. The protective structure 30 (40) protecting the first sub-area E1 is used as an example for description below.

[0227] Referring to Figure 10a, a protective structure 30 is connected to one end of the rotating shaft. The protective structure 30 is located on one side of the display module 100. The protective structure 30 can effectively resist collisions and provide good protection for the display screen.

[0228] Figure 12 is a schematic diagram of the exploded structure of the protective structure 30 and the first protective shell 201 in Figure 10a. In Figure 12, the protective structure 30 is connected to one end of the rotating shaft 230. The protective structure 30 covers the side of the first sub-area E1. The side of the first sub-area E1 refers to the surface of the first sub-area E1 along the thickness direction of the display module 100. Along the y direction, the first sub-area E1 is located between the display area G and the protective structure 30, and there is a gap 31 between the protective structure 30 and the first sub-area E1. Along the z direction, the protective structure 30 includes two ends, one end is a second end 32, and the other end is a first end 33. The first end 33 is connected to the rotating shaft 230.

[0229] When the display module 100 is in a flattened state, the vertical projection of the second end 32 on the display module 100 does not overlap with the first sub-area E1. Then the second end 32 will not block the first sub-area E1. When the display module 100 is in a flattened state, the user can observe the entire first sub-area E1, making the electronic device more beautiful. As mentioned above, the protective structure 30 can protect the side of the first sub-area E1, so the side of the first sub-area E1 of the display module 100 can be better protected without affecting its beauty. In addition, the area where the light-emitting side of the first sub-area E1 is located can be free of protective parts, saving the cost of the protective parts and reducing the manufacturing cost of the electronic device. During the bending process of the first sub-area E1, the aforementioned gap 31 can prevent the protective structure 30 and the first sub-area E1 from rubbing against each other, and the protective structure 30 does not affect the bending of the first sub-area E1.

[0230] The present embodiment of the present application does not limit the shape of the protective structure 30. It can be configured according to the shape and size of the space used to accommodate the protective structure 30. The present embodiment of the present application does not limit the shape of the first end 33, which can be a sheet-like structure, an arc-shaped structure, or an irregular structure.

[0231] For example, in some embodiments, along the thickness direction of the display module 100, the vertical projection of the second end 32 on the display module 100 does not overlap with the display module 100. For example, the vertical projection of the second end 32 on the display module 100 is located outside the display module 100. In this way, when a user views the display module 100 along the thickness direction of the display module 100, the second end 32 does not block the user's view, making the display module 100 more aesthetically pleasing.

[0232] In some embodiments, along the thickness direction of the display module 100, the vertical projection of the second end 32 on the display module 100 overlaps with the display module 100. For example, a portion of the vertical projection of the second end 32 on the display module 100 is located in the first sub-area E1, and a portion is located outside the display module 100. In this case, the portion of the vertical projection on the first sub-area E1 can cover at least a portion of the first sub-area E1, so that the covered first sub-area E1 is protected.

[0233] The embodiment of the present application does not limit the width of the gap 31 between the protective structure 30 and the first sub-area E1 along the y-direction, as long as the protective structure 30 does not interfere with the bending of the display panel 130 .

[0234] The embodiments of the present application do not limit the connection method between the second end 32 and the rotating shaft 230. For example, the second end 32 and the rotating shaft 230 may be connected by means of a snap connection, welding, bonding, or screw connection. In some embodiments, the protective structure 30 and the rotating shaft 230 may be connected as an integrally formed part. As mentioned above, in embodiments where the rotating shaft 230 includes a first door panel, a second door panel, and a shaft, the protective structure 30 is connected to the shaft.

[0235] The present embodiment does not limit the material of the protective structure 30. For example, the material of the protective structure 30 may include at least one of titanium and its alloys, aluminum and its alloys, copper and its alloys, iron and its alloys, ceramics, and steel. In some embodiments, the surface of the protective structure 30 may be coated or plated, allowing the protective structure 30 to also serve a decorative purpose.

[0236] In FIG12 , the structure and shape of first isolation trench 101, the relationship between first isolation trench 101 and various components in display module 100, and the relationship between first isolation trench 101 and first sub-area E1 are described above with reference to the description of first isolation trench 101. Furthermore, display module 100 of FIG12 may further include the aforementioned second isolation trench 102, third isolation trench 103, fourth isolation trench 104, fifth isolation trench 105, sixth isolation trench 106, and seventh isolation trench 107.

[0237] For example, in an embodiment where the electronic device includes a first protective shell 201 and a second protective shell 202, the first protective shell 201, the protective structure 30, and the second protective shell 202 are arranged sequentially along the x-direction. During the bending process of the display module 100, the protective structure 30 and the first protective shell 201 move relative to each other. The protective structure 30 and the second protective shell 202 also move relative to each other.

[0238] Figure 13a is a schematic diagram of the structure of a protective structure 40 provided in an embodiment of the present application. Figure 13b is a schematic diagram of the exploded structure of the protective structure 40 and first protective shell 201 in Figure 13a. In Figure 13b, the protective structure 40 includes a hard member 41 and an elastic member 42. The hard member 41 and the elastic member 42 are connected. The support strength of the hard member 41 is greater than the support strength of the elastic member 42.

[0239] The hard member 41 is connected to the end of the rotating shaft 230. The first sub-area E1 and the hard member 41 are arranged along the y-direction, and the first sub-area E1 and the hard member 41 are spaced apart. The elastic member 42 is stacked with the first sub-area E1 along the z-direction. The elastic member 42 covers at least a portion of the first sub-area E1. During the transition of the display module 100 from the unfolded state to the folded state, the elastic member 42 bends along with the display module 100.

[0240] Exemplarily, the elastic member 42 covers the entire first sub-area E1 or a portion of the first sub-area E1 of the display module 100. For example, the maximum dimension of the elastic member 42 along the y-direction is less than or equal to the dimension of the first sub-area E1 along the y-direction, thereby preventing the elastic member 42 from blocking light emitted from the display area.

[0241] The hard member 41 and the elastic member 42 can wrap around the edge of the first sub-area E1, preventing the edge of the first sub-area E1 from being exposed, thereby enhancing the appearance of the electronic device. When the electronic device is impacted, the hard member 41 disposed on one side of the first sub-area E1 can cushion the impact and prevent damage to the first sub-area E1.

[0242] For example, the material of the hard member 41 may include at least one of titanium and its alloys, aluminum and its alloys, copper and its alloys, iron and its alloys, ceramic, or steel. In some embodiments, to enhance the aesthetics of the electronic device 10, the surface of the hard member 41 may be coated or plated, thereby providing the hard member 41 with a decorative effect.

[0243] For example, in some embodiments, the elastic member 42 covers at least a portion of the first isolation groove 101 along the thickness direction of the electronic device. In other words, the vertical projection of the elastic member 42 on the display module 100 overlaps with the first isolation groove 101. For example, the elastic member 42 covers the entire first isolation groove 101, or the elastic member 42 covers a portion of the first isolation groove 101. As described above, after the display module 100 is collided, the first isolation groove 101 can prevent the cracks at the edge of the first sub-area E1 from extending to the display area. In this way, the elastic member 42 and the first isolation groove 101 have multiple protection effects on the display area. Alternatively, in some embodiments, the elastic member 42 may not cover the first isolation groove 101 along the thickness direction of the electronic device.

[0244] Exemplarily, the material of the elastic member 42 may include at least one of silicone, thermoplastic elastomer, thermoplastic polyurethane elastomer rubber, polyvinyl chloride soft glue, or rubber (such as silicone rubber, natural rubber, butadiene rubber, styrene-butadiene rubber, hexamethylene propylene rubber, etc.). Similarly, for the aesthetics of the electronic device 10, the surface of the elastic member 42 may be provided with a coating or plating. The aforementioned material has the characteristics of being soft and elastically deformable. The elastic member 42 made of the aforementioned material enables the protective structure 40 to play a role in protecting the edge of the first sub-area E1 of the display module 100. At the same time, it prevents the protective structure 40 from affecting the bending of the display module 100.

[0245] For example, the connection between the hard member 41 and the rotating shaft 230 can be welding, bonding, clamping, or screwing. The connection between the hard member 41 and the elastic member 42 can be bonding or screwing. In some embodiments, the elastic member 42 is injection molded on the hard member 41.

[0246] The embodiment of the present application does not limit the shape of the elastic member 42. For example, in Figure 13b, the hard member 41 includes three parts, namely a first side plate 411, a second side plate 412 and a main frame 413. The first side plate 411, the second side plate 412 and the main frame 413 are spaced apart along the x-direction. The first side plate 411 and the second side plate 412 are all connected to the main frame 413. The first side plate 411, the second side plate 412 and the main frame 413 are all connected to the elastic member 42. The first side plate 411 and the second side plate 412 have the function of strengthening the structural strength of the main frame 413. The first side plate 411 and the second side plate 412 can support the two ends of the elastic member 42 along the x-direction.

[0247] It is understandable that in other embodiments, the hard member 41 may also be in other shapes, which is not limited in the present embodiment.

[0248] In Figure 13b, the elastic member 42 includes a first elastic piece 421, a second elastic piece 422, and a third elastic piece 423. The first elastic piece 421 and the display module 100 are stacked along the z-direction. The second elastic piece 422 and the third elastic piece 423 are both connected to the first elastic piece 421. The main frame 413 is located between the third elastic piece 423 and the second elastic piece 422. In other words, when the electronic device is in the flattened state, the second elastic piece 422, the main frame 413, and the third elastic piece 423 are arranged along the x-direction. The second elastic piece 422, the main frame 413, and the third elastic piece 423 all cover the side surfaces of the first sub-area E1.

[0249] For example, the main frame 413 and the first elastic piece 421 are connected by clamping or welding. The first elastic piece 421, the second elastic piece 422 and the third elastic piece 423 can be connected to form an integrally formed part.

[0250] The first elastic sheet 421 covers at least a portion of the surface of the first sub-area E1 facing the light-emitting side. Thus, the third elastic sheet 423, the main frame 413, and the second elastic sheet 422 can protect the side surfaces of the first sub-area E1 along the thickness direction of the display module. The first elastic sheet 421 can protect at least a portion of the surface of the first sub-area E1 facing the light-emitting side.

[0251] Figure 13c is a projection diagram of the elastic member 42 and the first isolation groove 101 in Figure 13b. Referring to Figure 13c, the first reference plane u01 is defined as being parallel to both the z-direction and the x-direction, and perpendicular to the y-direction. In other words, the first reference plane u01 is perpendicular to the display module 100 (as shown in Figure 13b). The vertical projection of the first isolation groove 101 onto the first reference plane u01 is region v1. The vertical projection of the second elastic piece 422 onto the first reference plane u01 is region u1, and the vertical projection of the third elastic piece 423 onto the first reference plane u01 is region u2.

[0252] The second reference plane u02 is defined as being parallel to both the y-direction and the x-direction, and perpendicular to the z-direction. In other words, the second reference plane u02 is parallel to the display module 100 (as shown in FIG13B ). The vertical projection of the first isolation groove 101 on the second reference plane u02 is the v2 region. The vertical projection of the first elastic clip 421 on the second reference plane u02 is the u3 region. Obviously, the vertical projection of the first elastic clip 421 on the display module 100 has the same shape as the v2 region. The vertical projection of the first elastic clip 421 on the display module 100 has the same shape as the u3 region.

[0253] It can be understood that FIG13 c is only for illustrating the positional relationship of each projection area, and does not limit the shape of each projection area.

[0254] In some embodiments of the present application, along the z-direction, the first elastic piece 421 covers at least a portion of the first isolation trench 101. The vertical projection of the first elastic piece 421 on the display module 100 (as shown in FIG13B ) at least partially overlaps with the first isolation trench 101. That is, the u3 region and the v2 region at least partially overlap.

[0255] In some embodiments, along the z-direction, the first elastic fragment 421 partially covers the first isolation trench 101. In other words, part of the v2 region is located within the u3 region, and part of the v2 region is located outside the u3 region. In this way, the third elastic fragment 423, the main frame 413, and the second elastic fragment 422 can buffer external forces on the side of the first sub-region E1 (as shown in Figure 13b), preventing cracks from forming on the outside of the first isolation trench 101. The first isolation trench 101 can prevent cracks from extending into the display area G of the display module 100 (as shown in Figure 13a). This provides multiple protective functions.

[0256] In some embodiments, along the z-direction, the first elastic member 421 covers the entire first isolation trench 101. In other words, the entire v2 region is located within the u3 region. This reduces the length of the first isolation trench 101, thus simplifying the process of installing the first isolation trench 101. Furthermore, the first elastic member 421 protects at least a portion of the surface of the first sub-region E1 (as shown in FIG. 13b ) facing the light-emitting side. Even though the length of the first isolation trench 101 is relatively short, the protective effect of the first elastic member 421 on the first sub-region E1 ensures the protective performance of the first sub-region E1.

[0257] Returning to Figure 13b, in some embodiments, the first side panel 411 is embedded in the first elastic sheet 421, and the first side panel 411 can increase the strength of the first elastic sheet 421. For example, the first elastic sheet 421 and the first side panel 411 can be integrally formed into an integrated structure through a process such as in-mold injection molding, or can be fixed to each other by means of clamping, bonding, etc. The second side panel 412 is embedded in the third elastic sheet 423, and the second side panel 412 can increase the strength of the second side panel 412. For example, the second side panel 412 and the third elastic sheet 423 can be integrally formed into an integrated structure through a process such as in-mold injection molding, or can be fixed to each other by means of clamping, bonding, etc.

[0258] Furthermore, in some embodiments, the first protective shell 201 partially covers the first isolation trench 101, and the first elastic piece 421 also partially covers the first isolation trench 101. The first protective shell 201 protects the edges of the first region W1 from damage. Thus, the first protective shell 201, the first elastic piece 421, and the first isolation trench 101 collectively protect the display area G (as shown in FIG13 a), further improving the performance and lifespan of the display module 100.

[0259] Similarly, in some embodiments, the second protective shell 202 covers a portion of the first isolation trench 101, and the first elastic piece 421 covers a portion of the first isolation trench 101. The second protective shell 202, the first elastic piece 421, and the first isolation trench 101 collectively protect the display area G (as shown in FIG. 13a ), further improving the performance and lifespan of the display module 100.

[0260] Please return to Figure 13c. In some embodiments of the present application, along the y direction, the second spring clip 422 can cover part of the first isolation groove 101. The third spring clip 423 covers part of the first isolation groove 101. In other words, the u1 area covers part of the v1 area. The u2 area covers part of the v1 area. Because the second spring clip 422 and the third spring clip 423 cover the side of the display module 100 (as shown in Figure 13b), the second spring clip 422 and the third spring clip 423 can relieve the force on the side of the display module 100 and avoid damaging the side of the display module 100. The first isolation groove 101 can prevent the crack from extending to the display area G of the display module 100 (as shown in Figure 13a). A multi-protection effect is achieved.

[0261] In some embodiments of the present application, along the y-direction, the second spring piece 422 covers one end of the first isolation groove 101, and the third spring piece 423 covers the other end of the first isolation groove 101. In other words, the u1 region covers one end of the v1 region along the x-direction. The u2 region covers the other end of the v1 region along the x-direction. The second spring piece 422 provides lateral protection for the display module 100, preventing cracks from forming near one end of the first isolation groove 101; the third spring piece 423 provides lateral protection for the display module 100, preventing cracks from forming near the other end of the first isolation groove 101. The first isolation groove 101 can prevent cracks from extending toward the display area G (as shown in FIG. 13 a ) of the display module 100, thereby fully protecting the display area G.

[0262] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0263] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A display module, characterized in that: The display module comprises a first region, a bending region, and a second region connected in sequence; the display module comprises a display area and a non-display area located outside the display area; when the display module is in a flattened state, the first region, the bending region, and the second region are arranged along a first direction; The non-display area located at one end of the bending region is a first sub-area; The display module includes: A display panel, comprising an encapsulation layer, a first substrate layer, wiring, and a plurality of pixels; the encapsulation layer is located on a light-emitting side of the display panel, the encapsulation layer and the first substrate layer are stacked; the plurality of pixels are located between the encapsulation layer and the first substrate layer, the wiring is located between the encapsulation layer and the first substrate layer and is electrically connected to the plurality of pixels, and the wiring is located at the periphery of the plurality of pixels; In which, the encapsulation layer is provided with a first isolation groove, at least part of the first isolation groove is located in the first sub-area, the first isolation groove penetrates the encapsulation layer along the thickness direction of the encapsulation layer, and along the second direction, the routing is located between the first isolation groove and the multiple pixels, and the second direction is parallel to the first area and perpendicular to the first direction.

2. The display module according to claim 1, wherein: The first isolation trench extends to a portion of the non-display area located in the first region; And / or, the first isolation trench extends to a portion of the non-display area located in the second region.

3. The display module according to claim 1 or 2, characterized in that: The encapsulation layer is provided with a groove, at least part of which is located in the first sub-area, and the opening of the groove faces the light-emitting side of the display panel; the groove is filled with organic matter; along the second direction, the groove is located between the first isolation groove and the wiring.

4. The display module according to any one of claims 1 to 3, wherein: The first isolation trench has a cavity therein.

5. The display module according to any one of claims 1 to 4, characterized in that: The first substrate layer is provided with a second isolation groove, at least part of the second isolation groove is located in the first sub-region, the second isolation groove penetrates the first substrate layer along the thickness direction of the first substrate layer, and along the second direction, the routing is located between the second isolation groove and the multiple pixels.

6. The display module according to claim 5, wherein: Along a thickness direction of the encapsulation layer, the first isolation trench and the second isolation trench are communicated with each other.

7. The display module according to any one of claims 1 to 6, wherein: The display panel further includes an insulating layer located between the first substrate layer and the encapsulation layer.

8. The display module according to claim 7, wherein: The isolation layer is provided with a third isolation groove, which penetrates the isolation layer along the thickness direction of the isolation layer. At least part of the third isolation groove is located in the first sub-area. Along the second direction, the wiring is located between the third isolation groove and the multiple pixels.

9. The display module according to claim 8, wherein: Along the thickness direction of the encapsulation layer, the third isolation trench is connected to the first isolation trench.

10. The display module according to any one of claims 7 to 9, wherein: The display panel further includes a second substrate layer, and the insulating layer is located between the first substrate layer and the second substrate layer.

11. The display module according to claim 10, wherein: The second substrate layer is provided with a fourth isolation groove, which penetrates the second substrate layer along the thickness direction of the second substrate layer. At least a portion of the fourth isolation groove is located in the first sub-region. Along the second direction, the routing line is located between the fourth isolation groove and the multiple pixels.

12. The display module according to claim 11, wherein: Along a thickness direction of the encapsulation layer, the fourth isolation trench is communicated with the first isolation trench.

13. The display module according to any one of claims 1 to 12, characterized in that: The non-display area located in the first region is a second sub-area; the encapsulation layer is provided with a fifth isolation trench, the fifth isolation trench penetrates the encapsulation layer along the thickness direction of the encapsulation layer, and at least a portion of the fifth isolation trench is located in the second sub-area; Along the second direction or the first direction, the wiring is located between the first isolation trench and the plurality of pixels.

14. The display module according to claim 13, wherein: Along the first direction, the fifth isolation trench is connected to the first isolation trench.

15. The display module according to any one of claims 1 to 14, characterized in that: The display module further includes a supporting layer, and the first substrate layer is located between the supporting layer and the encapsulation layer; The supporting layer includes a first portion, a second portion, and a third portion connected in sequence; when the display module is in a flat state, the first portion, the second portion, and the third portion are arranged along the first direction; when the display module is in a folded state, the second portion is in a bent state; When the display module is in a flattened state, a vertical projection of the bent area on the supporting layer overlaps with the second portion.

16. The display module according to claim 15, wherein: A plurality of groove structures are provided on the second portion; the groove structures extend along the second direction.

17. The display module according to claim 16, wherein: The groove structure penetrates the supporting layer along a thickness direction of the supporting layer.

18. The display module according to any one of claims 1 to 17, wherein: The display module further includes a cover plate, and the encapsulation layer is located between the cover plate and the first substrate layer.

19. The display module according to any one of claims 1 to 18, wherein: The display module further includes a back film, and the first substrate layer is located between the back film and the encapsulation layer.

20. An electronic device, characterized in that: The electronic device comprises: a printed circuit board and the display module according to any one of claims 1 to 19, wherein the printed circuit board and the wiring are electrically connected.

21. The electronic device according to claim 20, characterized in that The electronic device further comprises: a first protective shell and a second protective shell; The first protective shell covers the edge of the first area; The second protective shell covers the edge of the second area; When the electronic device is in a flattened state, along a thickness direction of the electronic device, the first protective shell covers a portion of the first isolation groove, and the second protective shell covers a portion of the first isolation groove.

22. The electronic device according to claim 20 or 21, characterized in that: The display module also includes: a rotating shaft and a protective structure, the display module and the rotating shaft are stacked along the thickness direction of the display module; the protective structure is connected to one end of the rotating shaft, and the protective structure covers the side of the first sub-area; there is a gap between the protective structure and the first sub-area.

23. The electronic device according to claim 22, wherein: One end of the protective structure along the thickness direction of the electronic device is the first end, and the other end is the second end; the first end is connected to the rotating shaft; when the display module is in a flattened state, the vertical projection of the second end on the display module does not overlap with the first sub-area.

24. The electronic device according to claim 22, wherein: The protective structure includes: a first elastic sheet, a second elastic sheet, a third elastic sheet and a main frame; the main frame is connected to the rotating shaft; the second elastic sheet, the third elastic sheet and the main frame are all connected to the first elastic sheet; When the electronic device is in a flat state, the second elastic piece, the main frame and the third elastic piece are arranged along the first direction; The main frame, the second elastic sheet, and the third elastic sheet all cover side surfaces of the first sub-area, and the first elastic sheet covers at least a portion of the first isolation groove.

25. The electronic device according to claim 24, characterized in that The second elastic piece covers a portion of the first isolation groove, and the third elastic piece covers a portion of the first isolation groove.

26. The electronic device according to any one of claims 20 to 25, characterized in that: The electronic device further includes: a first middle frame and a second middle frame; the first middle frame supports the first area, and an end of the first middle frame facing the light output side of the electronic device is a first surrounding edge; the second middle frame supports the second area; an end of the second middle frame facing the light output side of the electronic device is a second surrounding edge; When the display module is in a flattened state, a vertical projection of the first surrounding edge on the display module does not overlap with the display module; and a vertical projection of the second surrounding edge on the display module does not overlap with the display module.

Images