Folding electronic equipment, display module and supporting structure

Abstract

The embodiment of the utility model provides folding electronic equipment, a display module and a supporting structure, the folding electronic equipment comprises a rotating shaft and the display module, the rotating shaft is arranged below the display module, the display module comprises a bending area and a non-bending area, and the bending area is fixed to the rotating shaft; the rotating shaft is used for generating mechanism movement to unfold or fold the display module and comprises a door plate; the display module comprises a display function layer and a supporting layer, the display function layer and the supporting layer are stacked, the supporting layer comprises a connecting part, the connecting part is located in the bending area, the connecting part is fixed to the door plate, and a plurality of holes are formed in the connecting part. According to the embodiment of the invention, the interaction force between the bending area of the display module and the rotating shaft can be reduced, the reliability of the bending area can be improved, and the function failure of the bending area can be improved.

Description

Technical Field

[0001] The present application relates to the field of terminal devices, and in particular to a foldable electronic device, a display module and a supporting structure. Background Art

[0002] Foldable screen phones use a hinge and a flexible screen. The flexible screen's bending area is fixedly connected to the hinge, providing the necessary structural support for the flexible screen and enabling a smooth transition between the folded and unfolded states, enabling the foldable screen to fold and unfold. In conventional foldable screen phones, the interaction between the flexible screen's bending area and the hinge is high, resulting in low reliability and prone to functional failure. Utility Model Content

[0003] The technical solution of the present application provides a foldable electronic device, a display module and a support structure, which can reduce the interaction force between the bending zone and the rotating shaft of the flexible screen, which is beneficial to improving the reliability of the bending zone and improving the functional failure of the bending zone.

[0004] In the first aspect, the technical solution of the present application provides a foldable electronic device, which includes a hinge and a flexible screen, wherein the hinge is arranged below the flexible screen, and the flexible screen includes a bending area and a non-bending area, and the bending area is fixed to the hinge; the hinge is used to generate mechanical movement to expand or fold the flexible screen; the hinge includes a door panel; the flexible screen includes a display function layer and a support layer, and the display function layer and the support layer are stacked, and the support layer includes a connecting part, which is located in the bending area, fixed to the door panel, and provided with multiple holes.

[0005] In this solution, the flexible screen can also be referred to as a flexible screen module, and the support layer can also be referred to as a bamboo book or support structure. By providing a hole in the flexible screen's bending zone where it connects to the door panel, the rigidity of the bending zone can be reduced, thereby reducing the force exerted by the flexible screen on the door panel. This also helps to bring the folding angle of the flexible screen, when not connected to the hinge, closer to the folding angle when connected to the hinge, thereby reducing the interaction between the flexible screen and the door panel. Therefore, this solution can increase the reliability of the flexible screen's bending zone and prevent functional failure of the flexible screen.

[0006] In one implementation of the first aspect, each hole is a strip-shaped hole, and the length direction of each strip-shaped hole is the length direction of the door panel. By arranging the holes as strip-shaped holes (e.g., waist-shaped holes) so that the length direction of the holes is parallel or approximately parallel to the length direction of the door panel, the support layer can be easily stretched in the stretching deformation direction, which helps to reduce the interaction force between the flexible screen and the door panel.

[0007] In one implementation of the first aspect, any two adjacent holes in the width direction of the door panel are staggered. By arranging the holes in a staggered arrangement, the bending zone can be divided into multiple shorter segments in the direction of tensile deformation, which helps reduce the stiffness of the bending zone and the interaction force between the flexible screen and the door panel.

[0008] In one implementation of the first aspect, opposite sides of the connecting portion along the width of the door panel are located outside the door panel. In this solution, the orthographic projection of the door panel onto the connecting portion along the width of the door panel is located within the connecting portion. By setting the width of the opening area to be greater than the width of the door panel, the stiffness of the bending zone can be further reduced, thereby reducing the interaction force between the flexible screen and the door panel.

[0009] In an implementation of the first aspect, the foldable electronic device further comprises an adhesive layer, the adhesive layer bonding the connecting portion to the door panel. Using an adhesive method to fix the connecting portion to the door panel has the advantages of being simple, reliable, and low-cost.

[0010] In one implementation of the first aspect, the adhesive layer includes a tape and a cured adhesive layer, the tape and the cured adhesive layer are stacked and bonded, the tape bonds the connection part, and the cured adhesive layer bonds the door panel. In this solution, the tape includes but is not limited to single-sided tape or double-sided tape such as foam tape. The tape is a finished product and can be used directly for assembly. The cured adhesive layer is an adhesive that is liquid in the initial state and needs to be cured through a certain process. By setting the adhesive layer into two layers, the low modulus characteristics of the tape can be used to play a buffering role and improve the drop performance of the entire machine; the high bonding strength characteristics of the cured adhesive layer can be used to ensure the connection strength between the flexible screen and the hinge.

[0011] In an implementation of the first aspect, the door panel includes a groove, and the solidified adhesive layer fills the groove. By making a groove on the door panel, the unsolidified liquid solidified adhesive layer can be accommodated to prevent it from overflowing.

[0012] In one implementation of the first aspect, the orthographic projection of the cured adhesive layer on the tape falls within the tape's boundaries. By making the tape's width greater than the width of the cured adhesive layer, the tape can effectively prevent liquid glue (referring to the liquid cured adhesive layer) from seeping into the hole during dispensing.

[0013] In one implementation of the first aspect, when the foldable electronic device is folded, the flexible screen is located inside the hinge. This solution can be used in an inward-folding screen device to reduce the interaction force between the flexible screen and the door panel, thereby improving the reliability of the inward-folding screen device.

[0014] On the second aspect, the technical solution of the present application provides a display module that can be used in a folding electronic device. The display module includes a display function layer and a support layer. The display function layer and the support layer are stacked. The support layer includes a connecting part. The connecting part is located in the bending area of ​​the display module. The connecting part is used to fix the door panel in the hinge of the folding electronic device. The connecting part is provided with multiple holes.

[0015] In this solution, the display module can also be referred to as a flexible screen, and the support layer can also be referred to as a bamboo book or support structure. By providing a hole in the display module's bending zone where it connects to the door panel, the rigidity of the bending zone can be reduced, thereby reducing the force exerted by the display module on the door panel. This also helps to bring the display module's folding angle (when not connected to the hinge) closer to the folding angle when connected to the hinge, further reducing the interaction force between the display module and the door panel. Therefore, this solution can increase the reliability of the display module's bending zone and prevent functional failure of the display module.

[0016] In one implementation of the second aspect, each of the holes is a strip-shaped hole, and the length direction of each strip-shaped hole is arranged to be parallel to the length direction of the door panel. By arranging the holes as strip-shaped holes (e.g., waist-shaped holes) so that the length direction of the holes is parallel or approximately parallel to the length direction of the door panel, the support layer can be easily deformed in the tensile deformation direction, which helps to reduce the interaction force between the display module and the door panel.

[0017] In one implementation of the second aspect, any two adjacent holes in the width direction of the door panel are staggered. This staggered arrangement of the holes can divide the bending zone into multiple shorter segments in the direction of tensile deformation, thereby reducing the stiffness of the bending zone and the interaction force between the display module and the door panel.

[0018] In one implementation of the second aspect, opposite sides of the connecting portion along the width of the door panel are located outside the door panel. In this embodiment, the orthographic projection of the door panel onto the connecting portion along the width of the door panel is located within the connecting portion. By setting the width of the opening area to be greater than the width of the door panel, the stiffness of the bending zone can be further reduced, thereby reducing the interaction force between the display module and the door panel.

[0019] In a third aspect, the technical solution of this application provides a support structure for use in a display module of a foldable electronic device. The support structure is configured to be stacked with the display function layer of the display module. The support structure includes a connecting portion located in the bending region of the display module and configured to be secured to a door panel within the hinge of the foldable electronic device. The connecting portion is provided with a plurality of holes.

[0020] In this solution, the display module can also be referred to as the display module, and the support layer can also be referred to as the bamboo book or support structure. By providing holes in the support structure's bending zone where it connects to the door panel, the stiffness of the bending zone can be reduced, thereby reducing the force exerted by the display module on the door panel. This also helps to bring the folding angle of the display module (when not connected to the hinge) closer to the folding angle when connected to the hinge, thereby reducing the interaction force between the display module and the door panel. Therefore, this solution can increase the reliability of the display module's bending zone and prevent functional failure of the display module.

[0021] In one implementation of the third aspect, each of the holes is a strip-shaped hole, and the length direction of each strip-shaped hole is arranged to be parallel to the length direction of the door panel. By arranging the holes as strip-shaped holes (e.g., waist-shaped holes) so that the length direction of the holes is parallel or approximately parallel to the length direction of the door panel, the support layer can be easily stretched in the stretching deformation direction, which helps to reduce the interaction force between the display module and the door panel.

[0022] In one implementation of the third aspect, any two adjacent holes in the width direction of the door panel are staggered. Arranging the holes in a staggered arrangement can divide the bending zone into multiple shorter segments in the direction of tensile deformation, thereby reducing the stiffness of the bending zone and the interaction force between the display module and the door panel.

[0023] In one implementation of the third aspect, opposite sides of the connecting portion along the width of the door panel are located outside the door panel. In this solution, the orthographic projection of the door panel onto the connecting portion along the width of the door panel is located within the connecting portion. By setting the width of the opening area to be greater than the width of the door panel, the stiffness of the bending zone can be further reduced, thereby facilitating reduced interaction between the display module and the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of a foldable electronic device in an unfolded state according to an embodiment;

[0025] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a folding device in a foldable electronic device;

[0026] Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the foldable electronic device in the folded state;

[0027] Figure 4 yes Figure 3 AA partial cross-sectional structural diagram of a foldable electronic device;

[0028] Figure 5 is a schematic diagram of a partial cross-sectional structure of a foldable electronic device in an unfolded state;

[0029] Figure 6 It is a schematic diagram of the partial top view structure of the support layer in the unfolded state;

[0030] Figure 7 The diagram shows the partial cross-sectional structure of the connecting part, adhesive layer and door panel in the unfolded state;

[0031] Figure 8 The partial cross-sectional structure of the connecting part, the adhesive layer and the door panel in the folded state is illustrated. DETAILED DESCRIPTION

[0032] The following embodiments of the present application provide a foldable electronic device, which includes but is not limited to a mobile phone, a tablet computer, an e-reader, etc.

[0033] The foldable electronic device may be an inner foldable screen device, that is, the flexible screen of the foldable electronic device may be hidden inside when folded. Alternatively, the foldable electronic device may be an outer foldable screen device, that is, the flexible screen of the foldable electronic device may be exposed outside when folded. The foldable electronic device may include two parts or at least three parts that can be folded relative to each other. The foldable electronic device may be a large foldable device, and when the user holds the large foldable electronic device normally, the user can bend it from the left and right sides to the middle; or the foldable electronic device may be a small foldable device, and when the user holds the small foldable electronic device normally, the user can bend it from the upper and lower sides to the middle.

[0034] Figure 1 FIG. 1 is a schematic diagram of a three-dimensional structure of a foldable electronic device 1 in an embodiment. Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the folding device 3 after the flexible screen 2 is removed from the folding electronic device 1. Figure 1 and Figure 2 As shown, the foldable electronic device 1 may include a flexible screen 2 and a folding device 3 , and the flexible screen 2 is fixed on the folding device 3 .

[0035] like Figure 1-Figure 3 As shown, the folding device 3 may include a first shell 31, a rotating shaft 32 and a second shell 33, and the rotating shaft 32 connects the first shell 31 and the second shell 33. The first shell 31 can be a shell component assembled from several shells, or it can be a single shell. The second shell 33 can be a shell component assembled from several shells, or it can be a single shell. Since the rotating shaft 32 is assembled from multiple parts, the rotating shaft 32 can generate a mechanical movement to rotate the first shell 31 relative to the second shell 33, so that the first shell 31 and the second shell 33 are closed or unfolded. For example, Figure 3 The first shell 31 and the second shell 33 shown can be completely closed to be parallel to each other (a slight deviation is allowed). Figure 1 As shown, when the first shell 31 and the second shell 33 are fully unfolded, the angle between them can be approximately 180° (a slight deviation is allowed, for example, the angle is 165°, 177° or 185°).

[0036] In this embodiment, the first housing 31 and the second housing 33 can be collectively referred to as the housing. When the first housing 31 and the second housing 33 are completely closed, the housing is in a folded state, and the foldable electronic device 1 is in a folded state. When the first housing 31 and the second housing 33 are completely unfolded, the housing is in an unfolded state, and the foldable electronic device 1 is in an unfolded state. Therefore, the foldable electronic device 1 can switch between the unfolded state and the folded state through the mechanical movement of the hinge 32.

[0037] In this embodiment, the flexible screen 2 can also be called a display module. Figure 1 As shown, the flexible screen 2 can be divided into a first non-bending area 2a, a bending area 2b, and a second non-bending area 2c arranged in sequence, and the bending area 2b is connected between the first non-bending area 2a and the second non-bending area 2c. When the flexible screen 2 is folded, the first non-bending area 2a and the second non-bending area 2c do not or basically do not bend and deform, but can maintain or basically maintain their original flat state; the bending area 2b undergoes bending deformation. For example, if the folding electronic device 1 is an inward folding screen device, the bending area 2b can be bent into a water drop shape; if the folding electronic device 1 is an outward folding screen device, the bending area 2b can be bent into a semicircle.

[0038] Combine Figure 1 and Figure 2 As shown, the flexible screen 2 can be fixedly connected to the first shell 31, the shaft 32 and the second shell 33, wherein the first non-bending area 2a can be fixedly connected to the first shell 31, the bending area 2b can be fixedly connected to the shaft 32, and the second non-bending area 2c can be fixedly connected to the second shell 33. Figure 3 As shown, exemplarily, the foldable electronic device 1 can be an inward-folding screen device. In the folded state, the flexible screen 2 can be located between the first shell 31 and the second shell 33.

[0039] The flexible screen 2 is used to display images. The flexible screen 2 includes but is not limited to an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MID) display, a micro organic light-emitting diode (MID) display, or a quantum dot light-emitting diode (QLED) display.

[0040] In this embodiment, the flexible screen 2 can be formed by laminating multiple layers, as will be described below. For example, the flexible screen 2 can also include a flexible cover plate as the outermost layer, which is used to protect the other layers and provide tactile and force feedback to the user when touched.

[0041] Figure 4 for Figure 3 Schematic diagram of the partial AA cross-sectional structure of the foldable electronic device 1. Figure 2 and Figure 4 As shown, for example, the rotating shaft 32 may include a main shaft 323 (or keel), a rotating assembly 322 and a door panel 321, etc.

[0042] Combine Figure 2 and Figure 4 As shown, the main shaft 323 is located between the first housing 31 and the second housing 33. The main shaft 323 can be a generally hollow rod-shaped component extending in a straight line. The extension direction of the main shaft 323 can be defined as the Y direction. The interior of the main shaft 323 can form multiple movable spaces that are connected to the exterior of the main shaft 323. The rotating assembly 322 can be installed in these movable spaces and movably connected to the main shaft 323.

[0043] Combine Figure 2 and Figure 4 As shown, there can be two rotating assemblies 322, which are symmetrical or substantially symmetrically arranged on both sides of the main shaft 323. The rotating assembly 322 can be assembled from several parts, which can generate mechanical motion and rotate relative to the main shaft 323.

[0044] like Figure 4As shown, for example, the rotating assembly 322 may include a connecting member 322a, a rotating arm 322b, and a rotating gear 322c. The connecting member 322a, the rotating arm 322b, and the rotating gear 322c may be connected in sequence. The connecting member 322a may be spaced away from the main shaft 323, and the rotating gear 322c may be rotatably accommodated within the interior space of the main shaft 323. The connecting member 322a and the rotating arm 322b are movably connected, such as by sliding, or by both sliding and rotating. The rotating arm 322b is rotationally connected to the rotating gear 322c, such as by meshing. The rotating gears 322c of the two rotating assemblies 322 are meshed.

[0045] like Figure 4 As shown, the two connecting members 322a can be fixed to the inner side of the first shell 31 and the inner side of the second shell 33, respectively. When the first shell 31 and the second shell 33 rotate relative to each other and expand, the first shell 31 and the second shell 33 can drive the two connecting members 322a to move, so that the two connecting members 322a drive the two rotating arms 322b to rotate, thereby causing the two rotating components 322 to rotate relative to each other and expand. Similarly, the two rotating components 322 can also rotate relative to each other and close.

[0046] Combine Figure 2 and Figure 4 As shown, the door panel 321 can be roughly a long plate-like structure, and its length direction can be defined as the Y direction and its width direction as the X direction. There can be two door panels 321, and the two door panels 321 can be symmetrically or substantially symmetrically arranged on both sides of the main shaft 323. The door panel 321 can be located on the side of the rotating component 322 away from the main shaft 323, and be movably connected to the rotating component 322, such as a sliding connection or a sliding connection and a rotating connection. Exemplarily, the door panel 321 can be movably connected to the rotating arm 322b in the rotating component 322. The door panel 321 can serve as a component in the rotating shaft 32 that is fixedly connected to the bending zone 2b. When the two rotating components 322 rotate relative to each other, the two door panels 321 can move relative to the rotating components 322 to which they are connected and rotate relative to the main shaft 323, so that the two door panels 321 drive the bending zone 2b to expand or fold.

[0047] like Figure 4 As shown, the foldable electronic device 1 can be an inward-folding screen device. In the folded state, the flexible screen 2 is located on the inner side of the hinge 32.

[0048] It is understandable that Figure 4 The structure of the rotating shaft 32 described above is merely an example, and this embodiment does not limit the specific structure of the rotating shaft 32 .

[0049] Figure 5 It is a schematic diagram of a partial cross-section structure of the foldable electronic device 1 in the unfolded state.

[0050] like Figure 5 As shown, for example, the flexible screen 2 may include a display function layer 21 and a support layer 22 that are stacked, with the support layer 22 facing the folding device 3. The display function layer 21 is used to implement the display function, and the display function layer 21 may include a display panel 21a. The display function layer 21 may also include a support film 21b and an adhesive layer 21c, with the display panel 21a, the support film 21b, and the adhesive layer 21c being stacked in sequence. The support film 21b serves to support the display panel 21a, and the support film 21b may be made of, for example, a polymer material. The adhesive layer 21c is used to bond the support film 21b to the support layer 22. The support layer 22 serves to support the display function layer 21, and the support layer 22 may also be referred to as a bamboo book or a support structure.

[0051] like Figure 5 As shown, the support layer 22 can be divided into a plurality of parts located in the first non-bending area 2a, the bending area 2b and the second non-bending area 2c. The support layer 22 may include a connecting portion 22a located in the bending area 2b ( Figure 5 In the figure, the area filled with diagonal hatching is the connecting portion 22a. Connecting portion 22a may be a sub-portion of the portion of support layer 22 located in bending region 2b. There may be two connecting portions 22a, which are not directly connected. For example, both connecting portions 22a may be located outside bending region 2b, i.e., one connecting portion 22a may be located on the side of bending region 2b near the first non-bending region 2a, and the other connecting portion 22a may be located on the side of bending region 2b near the second non-bending region 2c. Figure 5 The position, shape and size of the connecting portion 22a in FIG. 1 are merely for reference and are not intended to limit the actual product. Figure 5 As shown, as needed, the left edge of the left connecting portion 22a can also be substantially aligned with the left edge of the bending region 2b.

[0052] Figure 6 FIG. 2 is a schematic diagram of a partial top view of the support layer 22 in the unfolded state. Figure 6 As shown, the connecting portion 22a can be roughly rectangular, with its length direction defined as the Y direction and its width direction defined as the X direction. The shape of the connecting portion 22a can be similar to the shape of the door panel 321. The connecting portion 22a can be provided with a plurality of holes 22b, which can be arranged in a certain pattern.

[0053] like Figure 6As shown, illustratively, the holes 22b on the connecting portion 22a can be arranged in multiple rows along the X direction, and each row has multiple holes 22b arranged along the Y direction. The holes 22b can be distributed throughout the entire area of ​​the connecting portion 22a, or the connecting portion 22a can be considered to be the area in the supporting layer 22 where the holes 22b are distributed. The holes 22b can be through holes that penetrate the connecting portion 22a along the thickness direction of the connecting portion 22a, or they can be blind holes that do not penetrate the connecting portion 22a. If the holes 22b are blind holes, illustratively, combined with Figure 6 and Figure 5 As shown, the opening of the hole 22 b may be directed toward the folding device 3 .

[0054] like Figure 6 As shown, for example, the hole 22b can be a strip-shaped hole, and the length direction of the strip-shaped hole can be or substantially is the Y direction, that is, it can be or substantially is the length direction of the door panel 321. The width direction of the strip-shaped hole can be or substantially is the X direction. The strip-shaped hole can be, for example, a waist-shaped hole (also known as a racetrack-shaped hole or an oblong hole).

[0055] refer to Figure 6 As shown, during the folding process of the bending region 2b, the bending region 2b can undergo tensile deformation along the X-direction. By designing the holes 22b as the aforementioned strip-shaped holes, the proportion of the solid area between two adjacent holes 22b in the Y-direction (i.e., the area without holes 22b) in the entire connecting portion 22a can be reduced, thereby reducing the rigidity of the connecting portion 22a in the X-direction.

[0056] In another embodiment, the holes 22b can be rotated approximately 90 degrees, such that the length of the holes 22b is along the X-direction and the width is along the Y-direction. This increases the proportion of the solid area between two adjacent holes 22b in the Y-direction compared to the above embodiment, thereby increasing the stiffness of the connecting portion 22a in the X-direction. However, it should be understood that the stiffness of the connecting portion 22a can be reduced by providing the holes 22b in this embodiment, and therefore this embodiment can be used as needed.

[0057] In another embodiment, the strip-shaped hole may not be a regular waist-shaped hole, but an irregular long strip-shaped hole; or the strip-shaped hole may also be a hole of any other shape that meets the needs, such as a round hole, a square hole, etc.

[0058] like Figure 6As shown, for example, in the array pattern formed by the holes 22b on each connecting portion 22a, any two adjacent holes 22b along the X-direction (i.e., along the width of the door panel 321) are staggered. This staggered arrangement means that only a portion of the adjacent holes 22b along the X-direction overlap, while the other portions do not. This staggered arrangement design can divide the solid area of ​​the connecting portion 22a into several small segments that are not connected to each other along the X-direction, which helps reduce the stiffness of the connecting portion 22a in the X-direction.

[0059] In another embodiment, a staggered arrangement is not required. For example, multiple rows of holes 22b arranged along the X-direction can be aligned in a matrix, so that the solid area on the connecting portion 22a extends continuously along the X-direction. This will increase the stiffness of the connecting portion 22a in the X-direction. However, it will be understood that the stiffness of the connecting portion 22a can be reduced by providing the holes 22b in this embodiment, so this embodiment can be used as needed.

[0060] like Figure 5 As shown, each connecting portion 22a can be fixedly connected to a door panel 321, and at least a portion of the holes 22b on each connecting portion 22a can be located in the area where the door panel 321 is located. For example, all holes 22b can be located in the area where the door panel 321 is located. Alternatively, a portion of the holes 22b can be located in the area where the door panel 321 is located, and another portion of the holes 22b can be located outside of the area.

[0061] For example Figure 5 As shown, along the width direction X of the door panel 321, the orthographic projection of the door panel 321 on the connecting portion 22a is located within the boundary of the connecting portion 22a. That is, the X-dimensional dimension of the connecting portion 22a is larger, the X-dimensional dimension of the door panel 321 is smaller, and both X-dimensional boundaries of the connecting portion 22a exceed the corresponding boundaries of the door panel 321. This design can accommodate situations where the X-dimensional dimension of the bending region 2b is larger, by providing holes 22b within a larger area of ​​the bending region 2b to reduce rigidity.

[0062] like Figure 5 As shown, for example, each connecting portion 22a can be bonded to a door panel 321 via an adhesive layer 4. The adhesive layer 4 is made of a material having adhesive properties, and can be a single-layer structure or a composite-layer structure.

[0063] Figure 7 The partial cross-sectional structure of the connecting portion 22a, the adhesive layer 4 and the door panel 321 is shown. Figure 7 As shown, illustratively, the adhesive layer 4 may include a tape 41 and a curing adhesive layer 42 , the tape 41 and the curing adhesive layer 42 are stacked and bonded, the tape 41 is bonded to the connecting portion 22 a , and the curing adhesive layer 42 is bonded to the door panel 321 .

[0064] In this embodiment, the adhesive tape 41 is a prefabricated solid adhesive layer that can be directly assembled to the connecting portion 22a through a bonding process. The adhesive tape 41 includes, but is not limited to, single-sided tape and double-sided tape. Double-sided tape includes, but is not limited to, foam tape. If the adhesive tape 41 is single-sided tape, the side facing the connecting portion 22a is sticky. The modulus of the adhesive tape 41 can be relatively low, providing cushioning properties.

[0065] In this embodiment, the curing adhesive layer 42 is initially a liquid adhesive that solidifies into a solid adhesive after undergoing certain process conditions. The curing adhesive layer 42 includes, but is not limited to, hot melt adhesive, UV adhesive, and the like. For example, during assembly, the liquid adhesive can be first dripped onto the door panel 321 through a dispensing process, and then the tape 41 is aligned with the door panel 321 containing the liquid adhesive. The liquid adhesive is then cured into the curing adhesive layer 42 under certain conditions (e.g., heating for a certain period of time, or irradiating with ultraviolet light for a certain period of time). The curing adhesive layer 42 has a high bonding strength.

[0066] like Figure 7 As shown, for example, a groove 321a may be provided on the door panel 321, and the cured adhesive layer 42 may fill the groove 321a. The groove 321a is provided so that the liquid adhesive before curing can be contained within the groove 321a as much as possible, preventing overflow during the curing process and thus ensuring bonding quality. In another embodiment, the groove 321a may not be provided.

[0067] Combine Figure 6 and Figure 7 As shown, by using the adhesive tape 41 to bond the connection part 22a, the low modulus property of the adhesive tape 41 can be used to cushion the bending area 2b, reducing the impact on the bending area 2b when the entire device falls, and reducing the risk of failure of the bending area 2b due to excessive stress. By using the cured adhesive layer 42, the high bonding strength property of the cured adhesive layer 42 can be used to ensure the assembly strength of the connection part 22a and the door panel 321. In addition, the adhesive tape 41 can also block the liquid glue (the state of the cured adhesive layer 42 before curing) to prevent the liquid glue from entering the hole 22b. Figure 7 As shown, for example, to enhance the barrier effect, the orthographic projection of the cured adhesive layer 42 on the tape 41 may fall within the boundary of the tape 41 , and the size of the cured adhesive layer 42 along the X direction may be smaller than the size of the tape 41 along the X direction.

[0068] The above description of a composite layer structure of the adhesive layer 4 is merely an example and does not limit this embodiment. For example, in another embodiment, the adhesive layer 4 may be composed of a single type of adhesive, such as the adhesive layer 4 may include only the adhesive tape 41 or only the cured adhesive layer 42.

[0069] This embodiment, by providing a hole 22b in the connecting portion 22a of the support layer 22, reduces the stiffness of the connecting portion 22a and the bending zone 2b, making the bending zone 2b easier to bend. When the bending zone 2b bends and deforms, the force exerted by the bending zone 2b on the rotating shaft 32 (or on the door panel 321) is relatively small, which helps ensure the lifespan and reliability of the rotating shaft 32. Because the force is mutual, the force exerted by the rotating shaft 32 on the bending zone 2b is also relatively small, which helps improve the reliability of the bending zone 2b and reduce functional failures (such as black spots).

[0070] In addition, reference Figure 7 and Figure 8 As shown, by providing a hole 22b in the connecting portion 22a, the stiffness of the connecting portion 22a and the bending zone 2b can be reduced, so that the bending zone 2b is more likely to expand outward in the free folding state, thereby making the angle α of the flexible screen 2 in the free folding state close to the angle β formed by the two door panels 321 in the folded state. For example, the angle β can be about 32°. The free folding state refers to the folding state of the flexible screen 2 when the flexible screen 2 is not assembled with the rotating shaft 32. The angle α can be the maximum angle formed by the bending zone 2b in the free folding state, for example, Figure 8 The angle β formed by the two door panels 321 in the folded state can be the maximum angle formed by the two door panels 321 when the shaft 32 is folded, for example, Figure 8 The angle between the two straight lines L1 in FIG. Since the angle α is comparable to the angle β, the interaction force between the bending area 2b and the shaft 32 is relatively small, which not only improves the reliability of the bending area 2b and reduces functional failures, but also helps to ensure the life and reliability of the shaft 32.

[0071] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A foldable electronic device, characterized in that: It includes a rotating shaft and a flexible screen, wherein the rotating shaft is arranged below the flexible screen, the flexible screen includes a bending area and a non-bending area, and the bending area is fixed to the rotating shaft; The rotating shaft is used to generate mechanical movement to unfold or fold the flexible screen; the rotating shaft includes a door panel; The flexible screen includes a display function layer and a support layer, the display function layer and the support layer are stacked, the support layer includes a connecting part, the connecting part is located in the bending area, the connecting part is fixed to the door panel, and the connecting part is provided with multiple holes.

2. The foldable electronic device according to claim 1, wherein: Each of the holes is a strip-shaped hole, and the length direction of each of the strip-shaped holes is the length direction of the door panel.

3. The foldable electronic device according to claim 1 or 2, characterized in that: Any two adjacent holes in the width direction of the door panel are staggered.

4. The foldable electronic device according to claim 1 or 2, characterized in that: Along the width direction of the door panel, an orthographic projection of the door panel on the connecting portion is located inside the connecting portion.

5. The foldable electronic device according to claim 1 or 2, characterized in that: The foldable electronic device further includes an adhesive layer, which bonds the connecting portion and the door panel.

6. The foldable electronic device according to claim 5, characterized in that: The adhesive layer includes an adhesive tape and a curing adhesive layer, the adhesive tape and the curing adhesive layer are stacked and bonded together, the adhesive tape is bonded to the connection portion, and the curing adhesive layer is bonded to the door panel.

7. The foldable electronic device according to claim 6, characterized in that: The door panel includes a groove, and the cured adhesive layer fills the groove.

8. The foldable electronic device according to claim 6 or 7, characterized in that: An orthographic projection of the cured adhesive layer on the adhesive tape falls within a boundary of the adhesive tape.

9. The foldable electronic device according to claim 1, 2, 6 or 7, characterized in that: When the foldable electronic device is in a folded state, the flexible screen is located on the inner side of the rotating shaft.

10. A display module, characterized in that: The display module includes a bending area and a non-bending area, and the display module is used in a folding electronic device; the display module includes a display function layer and a support layer, the display function layer and the support layer are stacked, and the support layer includes a connecting part, the connecting part is located in the bending area, the connecting part is used to be fixed to the door panel in the rotating shaft of the folding electronic device, and the connecting part is provided with multiple holes.

11. The display module according to claim 10, wherein: Each of the holes is a strip-shaped hole, and the length direction of each of the strip-shaped holes is set to be the length direction of the door panel.

12. The display module according to claim 10 or 11, characterized in that: Any two adjacent holes in the width direction of the door panel are staggered.

13. The display module according to claim 10 or 11, characterized in that: Two opposite sides of the connecting portion along the width direction of the door panel are both located outside the door panel.

14. A support structure, characterized in that: The support structure is used in the display module of the folding electronic device. The support structure includes a connecting part, which is located in the bending area of ​​the display module. The connecting part is used to be fixed to the door panel in the rotating shaft of the folding electronic device. The connecting part is provided with multiple holes.

15. The support structure according to claim 14, characterized in that The holes are all strip-shaped holes, and the length direction of the strip-shaped holes is the length direction of the door panel.

16. The support structure according to claim 14 or 15, characterized in that Any two adjacent holes in the width direction of the door panel are staggered.

Images