WO2023207802A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2023207802A1
WO2023207802A1 PCT/CN2023/089843 CN2023089843W WO2023207802A1 WO 2023207802 A1 WO2023207802 A1 WO 2023207802A1 CN 2023089843 W CN2023089843 W CN 2023089843W WO 2023207802 A1 WO2023207802 A1 WO 2023207802A1
Authority
WO
WIPO (PCT)
Prior art keywords
swing arm
swing
display device
base
guide groove
Prior art date
Application number
PCT/CN2023/089843
Other languages
English (en)
French (fr)
Inventor
曾佳
刘少奎
曾伟
曾川
游传坤
青威
王志会
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2023207802A1 publication Critical patent/WO2023207802A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin

Definitions

  • the present disclosure relates to the field of display devices, and in particular to a display device.
  • Foldable mobile terminals usually include a folding stand and a flexible display panel.
  • the folding bracket can be opened and closed relatively, and the flexible display panel is located on one side of the folding bracket.
  • the folding bracket When the folding bracket is unfolded, the flexible display panel is spread flat on the folding bracket; when the folding bracket is closed, the flexible display panel is folded between the two relatively closed parts of the folding bracket.
  • Embodiments of the present disclosure provide a display device, which includes a folding bracket and a flexible display panel;
  • the folding bracket includes a base and two folding mechanisms.
  • the two folding mechanisms are respectively rotatably connected to the base and can be opened and closed relative to each other;
  • the flexible display panel includes a support layer and a panel body that are separated from each other.
  • the support layer is located on the back side of the panel body.
  • the back side is the side opposite to the display surface of the panel body.
  • the support layer and the panel body are separated from each other.
  • the panel bodies are respectively connected to the two folding mechanisms;
  • the folding mechanism is configured to drive the panel body and the support layer to shift relative to each other, and when the two folding mechanisms are relatively unfolded, the movement direction of the panel body relative to the support layer points to the base. When the two folding mechanisms are relatively closed, the movement direction of the panel body relative to the support layer is away from the base.
  • the folding mechanism includes a first swing member and a second swing member
  • the first swinging member and the second swinging member are respectively rotationally connected to the base, and the first swinging member and the second swinging member are slidingly connected, and the first swinging member can be relative to the second swinging member.
  • the two swinging members move in a direction approaching or away from the base. In the closed state, the maximum distance between the first swinging member and the rotation axis of the second swinging member is greater than the maximum distance between the first swinging member and the second swinging member in the flattened state. The maximum distance between a swing member and the rotation axis of the second swing member.
  • the support layer is respectively connected to the second swing parts of the two folding mechanisms, and the panel body is respectively connected to the first swing parts of the two folding mechanisms.
  • the base has a mounting groove on a surface close to the flexible display panel, and the mounting groove includes a bottom wall and at least one side wall;
  • the first swing member includes a swing arm and a pin.
  • the first end of the swing arm is located in the installation groove, and the second end is located outside the installation groove.
  • the pin is connected with the swing arm and the The side walls of the mounting slot are connected.
  • the side surface of the swing arm is in contact with the bottom wall, and the distance from the pin to the end surface of the first end of the swing arm is greater than the distance from the pin to the bottom wall. distance;
  • connection between the first side of the swing arm and the end surface of the first end of the swing arm has a rounded corner
  • the first side is a joint between the swing arm and the bottom in a flat state. The side where the walls meet.
  • the side wall has a guide groove, the extension direction of the guide groove forms a non-zero angle with the bottom wall, one end of the pin is connected to the swing arm, and the other end is located in the guide groove in, and can move along the guide groove; or,
  • the surface of the swing arm has a guide groove that extends along the length direction of the swing arm.
  • One end of the pin is connected to the side wall, and the other end is located in the guide groove and can be moved along the direction of the guide groove.
  • the guide groove moves.
  • the extension direction of the guide groove is perpendicular to the bottom wall.
  • the folding mechanism further includes an elastic member located in the guide groove and connected to the side wall of the guide groove and the pin.
  • the surface of the swing arm has a guide groove, the guide groove extends along the length direction of the swing arm;
  • the second swinging member is connected to the guide groove and can slide relative to the swing arm along the guide groove.
  • the second swing member includes a support plate, and an edge of the support plate is located in the guide groove.
  • a surface of the base close to the flexible display panel has an arc-shaped groove
  • the second swing member also includes an arc-shaped arm located on the support plate away from the flexible One side of the display panel is located at the edge of the support plate close to the base. One end of the arc-shaped arm is connected to the support plate, and the other end is located in the arc-shaped groove.
  • the base includes two sub-bases, the two sub-bases are spaced apart from each other, and each of the sub-bases is connected to the two folding mechanisms.
  • the folding mechanism further includes a first synchronization gear and a synchronization swing arm.
  • the first synchronization gear is rotationally connected to the base, and the rotation axis of the first synchronization gear is in contact with the second swing member.
  • the rotation axes are parallel, and the first synchronization gears of the two folding mechanisms are drivingly connected;
  • One end of the synchronous swing arm is connected to the first synchronization gear, and the other end is movably connected to the second swing member.
  • the synchronous swing arm is used to drive the first swing arm under the action of the second swing member. Synchronized gear rotation.
  • the second swing member further includes a connection portion connected to the support plate, the connection portion is located on a side of the support plate away from the flexible display panel and on a side of the synchronized swing arm. On the other side, there is a chute on the connecting part, and the synchronous swing arm is in sliding fit with the chute.
  • the synchronized swing arm includes a rod part and a sliding part.
  • One end of the rod part is connected to the first synchronization gear, and the other end of the rod part is connected to the sliding part.
  • the sliding part is located at in the chute and capable of moving along the chute.
  • the display device further includes a flexible block, which is located between the end surfaces of the first ends of the two swing arms of the folding mechanism in the flat state.
  • the panel body includes a base film, a display function layer, a polarizer, and a cover plate that are stacked in sequence.
  • the display function layer includes a substrate and an organic light-emitting diode located on the substrate.
  • the orthographic projection of the base film, the display function layer and the polarizer on the surface of the cover plate are all located within the cover plate.
  • the support layer includes a support layer main body and a flexible layer, and the flexible layer is located on a side of the support layer main body close to the panel body.
  • Figure 1 is a schematic structural diagram of a flexible display panel in the related art
  • Figure 2 is a schematic structural diagram of a flexible display panel provided by an embodiment of the present disclosure
  • Figure 3 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
  • Figure 4 is a schematic structural diagram of the flexible display panel in a flat state
  • Figure 5 is a schematic structural diagram of the flexible display panel in the closed state
  • Figure 6 is an exploded structural schematic diagram of the folding mechanism and base provided by an embodiment of the present disclosure.
  • Figure 7 is a schematic diagram of the connection between the folding mechanism and the base provided by the embodiment of the present disclosure.
  • Figure 8 is a schematic diagram of the connection between the folding mechanism and the base provided by the embodiment of the present disclosure.
  • Figure 9 is a partial structural schematic diagram of a folding bracket provided by an embodiment of the present disclosure.
  • Figure 10 is a partial structural schematic diagram of a folding bracket provided by an embodiment of the present disclosure.
  • Figure 11 is a schematic diagram of the connection between a swing arm and a base provided by an embodiment of the present disclosure
  • Figure 12 is a schematic diagram of the connection between another swing arm and the base provided by an embodiment of the present disclosure.
  • Figure 13 is a schematic diagram of the connection between the first swing member and the base provided by an embodiment of the present disclosure
  • Figure 14 is a schematic connection diagram of a first swing member and a second swing member provided by an embodiment of the present disclosure
  • Figure 15 is a schematic diagram of the connection between the second swing member and the base provided by an embodiment of the present disclosure.
  • Figure 16 is a schematic structural diagram of a folding mechanism provided by an embodiment of the present disclosure.
  • Figure 17 is a schematic diagram of the installation of a synchronous swing arm provided by an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
  • Words such as “connected” or “connected” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up”, “Down”, “Left”, “Right”, etc. are only used to express relative position relationships. When the absolute position of the described object changes, Then the relative position relationship may also change accordingly.
  • Foldable mobile terminals When an object is bent, stress will be generated at the bend. The smaller the bending radius, the greater the stress. And when the bending radius is the same, the thicker the object, the greater the stress. The same is true for flexible display panels.
  • Foldable mobile terminals usually include a folding stand and a flexible display panel.
  • the folding brackets can be opened and closed relative to each other to cause the flexible display panel to be folded. When the flexible display panel is bent, it will be affected by the stress at the bending point. The smaller the bending radius, the greater the stress, causing the flexible display panel to be easily damaged.
  • FIG. 1 is a schematic structural diagram of a flexible display panel in the related art.
  • the flexible display panel includes a panel body 11 and a support layer 12 .
  • the panel body 11 has opposite front and back faces, where the front face is a display surface and the display surface is used for display.
  • the support layer 12 is located on the back of the panel body 11 .
  • the support layer 12 is connected to the panel body 11 , for example, through a pressure-sensitive adhesive layer 13 .
  • FIG. 2 is a schematic structural diagram of a flexible display panel provided by an embodiment of the present disclosure.
  • the flexible display panel includes a panel body 11 and a support layer 12 that are separated from each other. That is to say, the support layer 12 is located on the back of the panel body 11 , but there is no connection between the support layer 12 and the panel body 11 .
  • the panel body 11 includes a base film 111, a display function layer 112, a polarizer 113 and a cover plate 114 that are stacked in sequence.
  • the display function layer 112 may include a substrate and an organic light-emitting diode located on the substrate.
  • the display function layer 112 and the base film 111 are connected through the first pressure-sensitive adhesive layer 115; the polarizer 113 and the display function layer 112 are connected through the second pressure-sensitive adhesive layer 116; the cover plate 114 and the polarizer 113 are connected through the transparent optical adhesive 117.
  • the orthographic projections of the base film 111 , the display function layer 112 and the polarizer 113 on the surface of the cover plate 114 may all be located within the cover plate 114 . That is to say, the edge of the cover 114 exceeds the bottom film 111, the display function layer 112 and the polarizer 113, which can facilitate the installation of the panel body 11. Please refer to the subsequent description for details.
  • the cover 114 is light-transmissive at least in the area corresponding to the display function layer 112 .
  • the support layer 12 includes a support layer body 121 and a flexible layer 122 .
  • the support layer main body 121 and the flexible layer 122 are bonded through the third pressure-sensitive adhesive layer 123 .
  • the flexible layer 122 is located on a side of the support layer main body 121 close to the panel body 11 to separate the support layer main body 121 and the panel body 11 .
  • the flexible layer 122 is relatively soft and can prevent the support layer main body 121 from damaging the panel body 11 .
  • the support layer main body 121 can be a metal sheet, which can be bent and play a supporting role to keep the flexible display panel flat. For example stainless Steel sheet.
  • the support layer 12 generally has a long service life. Damage caused by stress during the folding process usually occurs on the panel body 11. Once the panel body 11 is damaged, the flexible display panel may not display normally.
  • FIG. 3 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
  • the display device may be, but is not limited to, a mobile phone or a tablet computer. In the embodiment of the present disclosure, a mobile phone is taken as an example for explanation.
  • the display device includes a folding bracket 20 and a flexible display panel 10 .
  • the folding bracket 20 includes a base 21 and two folding mechanisms 22.
  • the two folding mechanisms 22 are respectively rotatably connected to the base 21, and the two folding mechanisms 22 can open and close relative to each other.
  • the display device has a flat state and a closed state. When the display device is in the flat state, the two folding mechanisms 22 of the folding bracket 20 are flattened; when the display device is in the closed state, the two folding mechanisms 22 of the folding bracket 20 are closed.
  • the flexible display panel 10 includes a supporting layer 12 and a panel body 11 that are separated from each other.
  • the flexible display panel 10 may be a flexible display panel as shown in FIG. 2 .
  • the support layer 12 is located on the back of the panel body 11 , and the support layer 12 and the panel body 11 are respectively connected to two folding mechanisms 22 .
  • Figure 4 is a schematic structural diagram of the flexible display panel in a flat state.
  • Figure 5 is a schematic structural diagram of the flexible display panel in a closed state.
  • the folding mechanism 22 is configured to drive the panel body 11 and the support layer 12 to move relative to each other, and when the two folding mechanisms 22 are relatively unfolded, the direction of movement of the panel body 11 relative to the support layer 12 Pointing to the base 21 , when the two folding mechanisms 22 are relatively closed, the movement direction of the panel body 11 relative to the support layer 12 is away from the base 21 .
  • the relative expansion of the two folding mechanisms 22 here refers to the opening angle between the two folding mechanisms 22, or the opening angle of the flexible display panel, which gradually increases; the relative closing of the two folding mechanisms 22 refers to the two The opening angle between the folding mechanisms 22, or the opening angle of the flexible display panel, gradually decreases.
  • the support layer 12 and the panel body 11 of the flexible display panel 10 By arranging the support layer 12 and the panel body 11 of the flexible display panel 10 to be separated from each other, the support layer 12 and the panel body 11 are respectively connected to the folding mechanism 22, and the support layer 12 and the panel are opened and closed by the opening and closing of the folding mechanism 22.
  • the main body 11 is capable of relative displacement.
  • the movement direction of the panel body 11 relative to the support layer 12 is away from the base 21 , so that when the closed state is reached, the bending portions of the panel body 11 and the support layer 12 are separated from each other.
  • a gap A is formed between the panel body 11 and the support layer 12, which reduces the stress of the panel body 11 at the bending part, which helps avoid damage to the flexible display panel and prolongs its service life.
  • the two folding mechanisms 22 are relatively unfolded, the movement direction of the panel body 11 relative to the support layer 12 points to the base 21 , so that the panel body 11 and the support layer 12 can fit each other in the flat state and keep the flexible display panel
  • the display in the embodiment of the present disclosure is more efficient than the display device in the related art while ensuring that the panel body 11 is not damaged.
  • the device can bend with a smaller bending radius. This is conducive to further reducing the thickness of the display device in the closed state while ensuring that the service life meets the requirements.
  • FIG. 6 is an exploded structural schematic diagram of the folding mechanism and the base provided by the embodiment of the present disclosure.
  • the folding mechanism 22 includes a first swing member 221 and a second swing member 222 .
  • the first swinging member 221 and the second swinging member 222 are respectively rotatably connected to the base 21 , so that both the first swinging member 221 and the second swinging member 222 can rotate relative to the base 21 .
  • the first swinging member 221 and the second swinging member 222 are slidingly connected, and the first swinging member 221 can move relative to the second swinging member 222 in a direction toward or away from the base 21 .
  • Figures 7 and 8 are both schematic diagrams of the connection between the folding mechanism and the base provided by the embodiment of the present disclosure.
  • Figure 7 shows the expanded state.
  • Figure 8 shows the closed state.
  • the maximum distance D between the first swing member 221 and the rotation axis 222m of the second swing member 222 is greater than the maximum distance D between the first swing member 221 and the second swing member 222 in the flat state.
  • the support layer 12 is connected to the second swinging parts 222 of the two folding mechanisms 22 respectively, and the panel body 11 is connected to the first swinging parts 221 of the two folding mechanisms 22 respectively.
  • the maximum distance from the first swing member 221 to the rotation axis 222m of the second swing member 222 may refer to the distance between the edge of the end of the first swing member 221 away from the base 21 and the rotation axis 222m of the second swing member 222.
  • the flexible display panel 10 is carried on two folding mechanisms 22 , and the two parts of the panel body 11 that can be bent to each other are respectively connected to the first swing members 221 of the two folding mechanisms 22 .
  • the maximum distance between the rotation axis of the first swing member 221 and the second swing member 222 may also refer to the part of the panel body 11 connected to the first swing member 221, and the side away from the rotation axis 222m of the second swing member 222 and the second swing member 222. The distance between the rotation axes 222m of the swing member 222.
  • the maximum distance between the rotation axis 222m of the first swing member 221 and the second swing member 222 is different in the closed state and the flat state, and in the closed state, the maximum distance is larger, so the transition from the closed state to the unfolded state is In the flat state, or when changing from the flat state to the closed state, the panel body 11 and the support layer 12 will shift relative to each other under the action of the first swing member 221 and the second swing member 222 . And compared with the flattened state, in the closed state, the maximum distance between the rotation axis 222m of the first swinging member 221 and the second swinging member 222 is larger.
  • FIGS. 9 and 10 are partial structural schematic diagrams of a folding bracket provided by an embodiment of the present disclosure.
  • Figure 9 shows the closed state
  • Figure 10 shows the flattened state.
  • the base 21 has a mounting groove 21 a on a surface close to the flexible display panel 10 .
  • the mounting groove 21 a includes a bottom wall 211 and at least one side wall 212 .
  • the first swing member 221 includes a swing arm 2211 and a pin 2212.
  • the first end of the swing arm 2211 is located in the installation groove 21a, and the second end is located outside the installation groove 21a.
  • the pin 2212 is connected to the swing arm 2211 and the side wall 212 of the mounting groove 21a.
  • the side surface of the swing arm 2211 is in contact with the bottom wall 211 of the installation groove 21a, and the distance H from the pin 2212 to the end surface of the first end of the swing arm 2211 is greater than the distance H from the pin 2212 to the bottom wall 211 of the installation groove 21a. distance h.
  • the end surface of the first end of the swing arm 2211 is in contact with the bottom wall 211 of the installation groove 21a.
  • the distance H is greater than the distance h, during the process of changing from the flat state to the closed state, as the swing arm 2211 rotates, the first end of the swing arm 2211 will interact with the bottom wall 211 of the installation groove 21a to push the swing arm 2211 and the second swing member 222 move relative to each other, thereby realizing the dislocation of the panel body 11 and the support layer 12 .
  • the axis center of the pin 2212 and the rotation axis 222m of the second swing member 222 may coincide with each other, that is, at this time, the rotation axis of the first swing member 221 and the rotation axis of the second swing member 222 coincide. In other examples, in the flat state, the axis center of the pin 2212 and the rotation axis 222m of the second swing member 222 may not coincide with each other.
  • the axis center of the pin 2212 does not coincide with the rotation axis 222m of the second swing member 222.
  • the edges of the panel body 11 are aligned with the edges of the support layer 12 , that is, the support layer 12 is away from the base.
  • the orthographic projection of the side of 21 on the back of the panel body 11 coincides or partially overlaps with the side of the panel body 11 away from the base 21 (if the length of the side of the support layer 12 is not equal to the length of the side of the panel body 11 partially overlap); refer to Figure 5, in the closed state, at the opposite sides of the flexible display panel 10 away from the base 21, the edges of the support layer 12 and the edges of the panel body 11 are staggered from each other, and the support layer
  • the orthographic projection of the side of 12 away from the base 21 on the back of the panel body 11 is located in the back of the panel body 11 and does not coincide with the side of the back of the panel body 11 away from the base 21. The distance between the two is Hh.
  • the connection between the first side surface 2211a of the swing arm 2211 and the end surface of the first end of the swing arm 2211 has a rounded corner 2211b.
  • the first side 2211a here refers to the side where the swing arm 2211 contacts the bottom wall 211 of the mounting groove 21a in the flat state.
  • the first end of the swing arm 2211 is equivalent to a cam structure.
  • the first end of the swing arm 2211 will interact with the bottom wall 211 of the installation groove 21a.
  • the swing arm 2211 and the second swing member 222 are pushed to move relative to each other.
  • the rounded corners 2211b can make the rotation of the swing arm 2211 smoother, and smoothly transition the end surface of the first end of the swing arm 2211 into contact with the bottom wall 211 of the mounting groove 21a.
  • the side wall 212 of the mounting groove 21a has a guide groove 212a, and the extending direction of the guide groove 212a forms a non-zero included angle with the bottom wall 211 of the mounting groove 21a.
  • One end of the pin 2212 is connected to the swing arm 2211, the other end of the pin 2212 is located in the guide groove 212a, and the pin 2212 can move along the guide groove 212a.
  • the angle between the extension direction of the guide groove 212a and the bottom wall 211 of the installation groove 21a is 80° ⁇ 90°.
  • the extending direction of the guide groove 212a is perpendicular to the bottom wall 211.
  • the first end of the swing arm 2211 interacts with the bottom wall 211 of the installation groove 21a, pushing the swing arm 2211 to oppose the second swing member 222.
  • the pin 2212 moves in the guide groove 212a along with the swing arm 2211, and slides toward the end of the guide groove 212a away from the bottom wall 211 of the installation groove 21a.
  • the guide groove 212a can limit the movement direction of the pin 2212 to make the first swing member 221 rotate smoothly.
  • FIG. 11 is a schematic diagram of the connection between a swing arm and a base provided by an embodiment of the present disclosure.
  • the folding mechanism 22 also includes an elastic member 2214 .
  • the elastic member 2214 is located in the guide groove 212a, and the elastic member 2214 is connected to the side wall of the guide groove 212a and the pin 2212.
  • the elastic member 2214 is located on a side of the pin 2212 away from the bottom wall 211 of the mounting groove 21a.
  • the elastic force provided by the elastic member 2214 keeps the pin 2212 stable in the guide groove 212a.
  • the pin 2212 slides along the guide groove 212a to the end of the guide groove 212a away from the bottom wall 211 of the installation groove 21a, and the elastic member 2214 is gradually compressed.
  • the elastic force exerted by the elastic member 2214 on the pin 2212 causes the pin 2212 to slide toward the end of the guide groove 212a close to the bottom wall 211 of the installation groove 21a.
  • the elastic member 2214 is a spring.
  • the elastic member 2214 can also be a spring piece, or other components that can provide elasticity.
  • Figure 12 is a schematic diagram of the connection between another swing arm and the base provided by an embodiment of the present disclosure.
  • the surface of the swing arm 2211 has a guide groove 212 a , and the guide groove 212 a extends along the length direction of the swing arm 2211 .
  • One end of the pin 2212 is connected to the side wall 212 of the installation groove 21a, the other end of the pin 2212 is located in the guide groove 212a, and the pin 2212 can move along the guide groove 212a.
  • the side surface of the swing arm 2211 is in contact with the bottom wall 211 of the installation groove 21a.
  • the distance between the pin 2212 and the end surface of the first end of the swing arm 2211 is relatively large.
  • the pin 2212 moves in the guide groove 212a in the direction close to the end surface of the first end of the swing arm 2211.
  • the pin 2212 and the swing arm 2211 The distance between the first end and the end face gradually decreases.
  • an elastic member 2214 may also be provided in the guide groove 212a.
  • the elastic member 2214 is arranged on a side of the end surface of the pin 2212 close to the first end of the swing arm 2211 .
  • the pin 2212 slides in the guide groove 212a in a direction close to the end surface of the first end of the swing arm 2211, and the elastic member 2214 is gradually compressed.
  • the elastic force exerted by the elastic member 2214 on the pin 2212 causes the pin 2212 to slide in a direction away from the end surface of the first end of the swing arm 2211 .
  • Figure 13 is a schematic diagram of the connection between the first swing member and the base provided by an embodiment of the present disclosure.
  • the first swing member 221 may include two swing arms 2211 and two pins 2212. Each swing arm 2211 is connected to the base 21 through the pins 2212, and the two pins 2212 are coaxially arranged. . By arranging two swing arms 2211 to better support the panel body 11, the display device can be made more stable during the folding process.
  • the first swing member 221 also includes a connecting rod 2213.
  • the connecting rod 2213 is located between the two swing arms 2211.
  • the two ends of the connecting rod 2213 are respectively connected with the second ends of the two first swing arms 2211. connected.
  • the connecting rod 2213 and the two swing arms 2211 form a frame-shaped structure with one side open, which not only makes the structure of the display device more stable, but also better connects and supports the panel body 11 .
  • the connecting rod 2213 and the two swing arms 2211 can be connected to three sides of the panel body 11 respectively.
  • it is connected to the panel body 11 by adhesion.
  • the edge of the cover 114 exceeds the base film 111 , the display function layer 112 and the polarizer 113 .
  • the base film 111 , the display function layer 112 and the polarizer 113 may be located in a frame-shaped structure.
  • the edge of the cover 114 extends beyond the bottom film 111 , the display function layer 112 and the polarizer 113 and is connected to the connecting rod 2213 and the two swing arms 2211 .
  • the edge of the cover 114 exceeds the base film 111, the display function layer 112 and the polarizer 113, providing a relatively The large area is connected to the connecting rod 2213 and the two swing arms 2211.
  • the frame-shaped structure surrounds the base film 111, the display function layer 112 and the polarizer 113, and can also play a protective role to prevent the base film 111, the display function layer 112 and the polarizer 113 from being damaged.
  • the first swing member 221 is connected to the base 21 through a swing arm 2211, so the rotation of the first swing member 221 is relatively stable.
  • the first swing member 221 can be connected to the base 21 through two swing arms 2211 to improve the stability of the rotation of the first swing member 221.
  • the surface of the swing arm 2211 also has a guide groove 2211c, and the guide groove 2211c extends along the length direction of the swing arm 2211.
  • the guide groove 2211c is used to connect the second swing member 222.
  • the second swinging member 222 is connected to the guide groove 2211c, and the second swinging member 222 can slide relative to the swing arm 2211 along the guide groove 2211c.
  • the second swing member 222 and the swing arm 2211 slide relative to each other along the guide groove 2211c.
  • the guide groove 2211c not only connects the first swinging member 221 and the second swinging member 222, but also limits the relative movement direction of the first swinging member 221 and the second swinging member 222, making the relative movement between the two more stable.
  • the first swing member 221 includes two swing arms 2211, and both swing arms 2211 have guide grooves 2211c.
  • the guide grooves 2211c are located on the opposite surfaces of the two swing arms 2211, that is, the guide grooves 2211c of the two swing arms 2211 are opposite, so that the two swing arms 2211 can communicate with the second swing member 222 from both sides of the second swing member 222.
  • 222 form a fit, so that the first swing member 221 and the second swing member 222 can move relative to each other more smoothly.
  • Figure 14 is a schematic connection diagram of a first swing member and a second swing member provided by an embodiment of the present disclosure.
  • a cross section along the dashed line M in FIG. 13 is shown in FIG. 14 .
  • the second swinging member 222 includes a support plate 2221, and the edge of the support plate 2221 is located in the guide groove 2211c.
  • the support plate 2221 can provide a larger area to support the flexible display panel 10, so that the flexible display panel 10 remains flat when in a flat state.
  • the edge of the support plate 2221 extends into the guide groove 2211c and cooperates with the guide groove 2211c, so that the support plate 2221 can move relative to the swing arm 2211 along the guide groove 2211c.
  • the support layer 12 and the support plate 2221 may be bonded, for example, through pressure-sensitive adhesive.
  • the support plate 2221 may be a whole plate, or may be formed by connecting multiple plates.
  • the support plate 2221 shown in Figure 14 is formed by connecting two smaller plates and one larger plate.
  • the multiple plates are connected by screws.
  • Figure 15 is a schematic diagram of the connection between the second swing member and the base provided by an embodiment of the present disclosure. As shown in FIG. 15 , the surface of the base 21 close to the flexible display panel 10 has an arc-shaped groove 210b.
  • the second swing member 222 also includes an arc arm 2222 located on a side of the support plate 2221 away from the flexible display panel 10 , and the arc arm 2222 is located at an edge of the support plate 2221 close to the base 21 .
  • One end of the arc-shaped arm 2222 is connected to the support plate 2221, and the other end of the arc-shaped arm 2222 is located in the arc-shaped groove 210b.
  • the arc arm 2222 cooperates with the arc groove 210b so that the second swing member 222 can rotate relative to the base 21.
  • the rotation axis of the second swing member 222 is the axis center of the arc groove 210b.
  • the connection form between the arc arm 2222 and the arc groove 210b is used to enable the second swing member 222 to rotate around the virtual axis.
  • the virtual axis refers to an axis located outside the structure and not passing through the structure itself, for example, an axis located outside the second swinging member 222 and not passing through the second swinging member 222 .
  • a pin is used for connection, such as the connection between the first swing member 221 and the base 21.
  • the rotation axis of the first swing member 221 is the axis center of the pin 2212, and the rotation axis passes through the first swing member 221. Swing member 221.
  • the rotation axis of the second swing member 222 is the axis center of the arc-shaped groove 210b and is a virtual axis
  • the position of the rotation axis of the second swing member 222 can be changed by adjusting the radius of the arc-shaped groove 210 b and the arc-shaped arm 2222.
  • the design is more flexible, making it easy to adjust the motion trajectory of the second swing member 222.
  • the second swing member 222 may include two or more arc-shaped arms 2222, each arc-shaped arm 2222 has the same radius, and the axes coincide with each other.
  • the second swing member 222 includes two arc-shaped arms 2222, and the two arc-shaped arms 2222 respectively cooperate with the two arc-shaped grooves 210b on the base 21.
  • the second swinging member 222 is connected to the base 21 through an arc arm 2222, so that the rotation of the second swinging member 222 is relatively stable.
  • the second swing member 222 can be connected to the base 21 through two or more arc-shaped arms 2222 to improve the stability of the rotation of the second swing member 222.
  • the side walls of the arc-shaped groove 210 b and the side walls of the arc-shaped arm 2222 also have guide structures that cooperate with each other.
  • the side wall of the arcuate groove 210b has a convex rib 2101
  • the convex rib 2101 is arc-shaped
  • the axis of the convex rib 2101 coincides with the axis of the arcuate groove 210b.
  • the side wall of the arc-shaped arm 2222 has a groove 2222a, the groove 2222a is arc-shaped, and the axis of the groove 2222a coincides with the axis of the arc-shaped arm 2222.
  • the protruding rib 2101 is located in the groove 2222a. During the rotation of the second swing member 222, the protruding rib 2101 slides in the groove 2222a. The convex rib 2101 cooperates with the groove 2222a to make the rotation of the second swing member 222 more stable.
  • the positions of the rib 2101 and the groove 2222a can also be interchanged.
  • a groove 2222a is provided on the side wall of the groove 210b, and the axis of the groove 2222a coincides with the axis of the arcuate groove 210b.
  • a protruding rib 2101 is provided on the side wall of the arc-shaped arm 2222, and the axis of the protruding rib 2101 coincides with the axis of the arc-shaped arm 2222.
  • the arc-shaped groove 210b connected to the second swinging members 222 of the two folding mechanisms 22 is in a direction parallel to the axis of the arc-shaped groove 210b. They are staggered to save space.
  • the base 21 may include two sub-bases 210 spaced apart from each other.
  • the first swing member 221 includes two swing arms 2211
  • the second swing member 222 includes two arc-shaped arms 2222, one swing arm 2211 of the first swing member 221 and one swing arm 2211 of the second swing member 222.
  • the arc arm 2222 is connected to one sub-base 210
  • the other swing arm 2211 of the first swing member 221 and the other arc arm 2222 of the second swing member 222 are connected to the other sub-base 210.
  • the two sub-bases 210 can also be connected as a whole.
  • the two sub-bases 210 are detachably connected through connecting members, which may be screws, etc.; for another example, the two sub-bases 210 are made into a whole body through an integral molding process.
  • FIG. 16 is a schematic structural diagram of a folding mechanism provided by an embodiment of the present disclosure.
  • the folding mechanism 22 also includes a first synchronized gear 223 and a synchronized swing arm 224 .
  • the first synchronization gear 223 is rotationally connected to the base 21 , and the rotation axis of the first synchronization gear 223 is parallel to the rotation axis of the second swing member 222 .
  • the first synchronization gears 223 of the two folding mechanisms 22 are drivingly connected.
  • One end of the synchronized swing arm 224 is connected to the first synchronized gear 223 , and the other end of the synchronized swing arm 224 is movably connected to the second swing member 222 .
  • the synchronized swing arm 224 is used to drive the first synchronized gear 223 to rotate under the action of the second swing member 222 .
  • a second synchronization gear 225 is also provided between the first synchronization gears 223 of the two folding mechanisms 22 , and the first synchronization gears 223 of the two folding mechanisms 22 mesh with the second synchronization gear 225 .
  • the first synchronization gears 223 of the two folding mechanisms 22 may also be meshed with each other.
  • the first synchronous gears 223 of the two folding mechanisms 22 are connected in a transmission manner, so that the synchronous swing arms 224 of the two folding mechanisms 22 can rotate synchronously and in opposite directions, thereby driving the two folding mechanisms 22 to move synchronously and open and close relative to each other.
  • the second swinging member 222 also includes a connecting portion 2223 connected to the support plate 2221 .
  • the connection part 2223 is located on the side of the support plate 2221 away from the flexible display panel 10 , and the connection part 2223 is located on the side of the synchronization swing arm 224 .
  • the connection part 2223 has a slide groove 2223 a .
  • the synchronous swing arm 224 is in sliding fit with the slide groove 2223a.
  • the synchronized swing arm 224 includes a rod portion 2241 and a sliding portion 2242.
  • One end of the rod portion 2241 is connected to the first synchronization gear 223, and the other end of the rod portion 2241 is connected to the sliding portion 2242.
  • the sliding part 2242 is located in the sliding groove 2223a, and the sliding part 2242 can move along the sliding groove 2223a.
  • the rotation axis of the synchronization swing arm 224 is the axis center of the first synchronization gear 223.
  • the axis center of the first synchronization gear 223 does not coincide with the rotation axis of the second swing member 222.
  • the second swing member 222 rotates around the axis of the arc-shaped groove 210b, and the synchronized swing arm 224 rotates around the axis of the first synchronized gear 223.
  • the chute 2223a is provided so that the sliding part 2242 can move in the chute 2223a to prevent the second swing member 222, the base 21 and the synchronized swing arm 224 from being locked with each other and unable to move.
  • FIG. 17 is a schematic diagram of the installation of a synchronous swing arm provided by an embodiment of the present disclosure.
  • the synchronized swing arm 224 also includes a mounting shaft 2243 located at one end of the rod portion 2241 .
  • the first synchronization gear 223 is sleeved outside the installation shaft 2243 and positioned circumferentially with the installation shaft 2243 . That is, the first synchronization gear 223 and the mounting shaft 2243 will not rotate relative to each other.
  • the mounting shaft 2243 is rotationally connected to the base 21 , so that the first synchronization gear 223 is installed on the base 21 , and the first synchronization gear 223 can rotate relative to the base 21 .
  • two second synchronization gears 225 are also provided between the first synchronization gears 223 of the two folding mechanisms 22 .
  • the display device may further include a mounting plate 226.
  • One side of the second synchronization gear 225 is rotatably connected to the base 21 , and the other side of the second synchronization gear 225 is rotatably connected to the mounting plate 226 .
  • the second synchronization gear 225 is supported from both sides of the second synchronization gear 225 by the mounting plate 226 and the base 21, so that the second synchronization gear 225 can rotate smoothly.
  • the mounting plate 226 also has two connecting holes 226a.
  • the two connecting holes 226a are respectively placed outside the mounting shafts 2243 of the synchronous swing arms 224 of the two folding mechanisms 22.
  • the connecting holes 226a are in clearance fit with the mounting shafts 2243. .
  • the connecting hole 226a does not affect the rotation of the synchronous swing arm 224.
  • the connecting hole 226a is placed outside the mounting shaft 2243 to provide support for the mounting plate 226 and prevent the mounting plate 226 from loosening.
  • FIG. 18 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.
  • the display device may further include a flexible block 30 .
  • the flexible block 30 In the flat state, the flexible block 30 is located between the end surfaces of the first ends of the swing arms 2211 of the two folding mechanisms 22 .
  • the flexible block 30 is used to fill the gap, which is located at the first end of the flexible display panel 10, the base 21 and the swing arms 2211 of the two folding mechanisms 22 in the flat state. between the end faces.
  • the flexible block 30 can deform under the extrusion of the swing arm 2211, which can fill the gap without affecting the movement of the swing arm 2211.
  • the flexible block 30 is foam. In some examples, it can also be a block structure made of other flexible materials such as silicone.

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Abstract

本公开提供了一种显示装置，属于显示装置领域。该显示装置包括折叠支架和柔性显示面板；折叠支架包括基座和两个折叠机构；柔性显示面板包括相互分离的支撑层和面板本体，支撑层和面板本体均分别与两个折叠机构相连；折叠机构被配置为，带动面板本体和支撑层相互错动，且在两个折叠机构相对展开时，面板本体相对支撑层的运动方向指向基座，在两个折叠机构相对合拢时，面板本体相对支撑层的运动方向背离基座。在合拢的过程中，面板本体相对支撑层的运动方向背离基座，使得到达合拢状态时，面板本体的弯折部位和支撑层的弯折部位相互分离，降低了面板本体在弯折部位的应力，有利于避免柔性显示面板受损，延长使用寿命。

Description

显示装置
本申请要求于2022年4月27日提交的申请号为202210459283.0、发明名称为“显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及显示装置领域，特别涉及一种显示装置。
背景技术
随着移动终端技术的发展，移动终端的用途越来越广泛，已经成为了人们日常工作、生活中重要的工具之一，折叠式的移动终端因占用空间小，方便携带而逐渐受到人们的青睐。
折叠式的移动终端通常包括折叠支架和柔性显示面板。折叠支架可以相对开合，柔性显示面板位于折叠支架的一侧。折叠支架展开时，柔性显示面板摊平在折叠支架上；折叠支架合拢时，柔性显示面板折叠在折叠支架相对合拢的两部分之间。
发明内容
本公开实施例提供了一种显示装置，所述显示装置包括折叠支架和柔性显示面板；
所述折叠支架包括基座和两个折叠机构，两个所述折叠机构分别与所述基座转动连接，且能够相对开合；
所述柔性显示面板包括相互分离的支撑层和面板本体，所述支撑层位于所述面板本体的背面，所述背面为与所述面板本体的显示面相反的一面，所述支撑层和所述面板本体均分别与两个所述折叠机构相连；
所述折叠机构被配置为，带动所述面板本体和所述支撑层相互错动，且在两个所述折叠机构相对展开时，所述面板本体相对所述支撑层的运动方向指向所述基座，在两个所述折叠机构相对合拢时，所述面板本体相对所述支撑层的运动方向背离所述基座。
可选地，所述折叠机构包括第一摆动件和第二摆动件；
所述第一摆动件和所述第二摆动件分别与所述基座转动连接，且所述第一摆动件和所述第二摆动件滑动连接，所述第一摆动件能够相对所述第二摆动件沿靠近或远离所述基座的方向移动，在合拢状态下，所述第一摆动件到所述第二摆动件的转动轴线的最大距离，大于在展平状态下，所述第一摆动件到所述第二摆动件的转动轴线的最大距离。
可选地，所述支撑层与两个所述折叠机构的所述第二摆动件分别相连，所述面板本体与两个所述折叠机构的所述第一摆动件分别相连。
可选地，所述基座靠近所述柔性显示面板的表面具有安装槽，所述安装槽包括底壁和至少一个侧壁；
所述第一摆动件包括摆臂和销轴，所述摆臂的第一端位于所述安装槽中，第二端位于所述安装槽外，所述销轴与所述摆臂和所述安装槽的侧壁相连。
可选地，在展平状态下，所述摆臂的侧面与所述底壁接触，所述销轴到所述摆臂的第一端的端面的距离大于所述销轴到所述底壁的距离；
在合拢状态下，所述摆臂的第一端的端面与所述底壁接触。
可选地，所述摆臂的第一侧面与所述摆臂的第一端的端面的连接处具有圆角，所述第一侧面为在展平状态下，所述摆臂与所述底壁相接触的一个侧面。
可选地，所述侧壁具有导向槽，所述导向槽的延伸方向与所述底壁呈非零夹角，所述销轴的一端与所述摆臂相连，另一端位于所述导向槽中，且能够沿所述导向槽移动；或者，
所述摆臂的表面具有导向槽，所述导向槽沿所述摆臂的长度方向延伸，所述销轴的一端与所述侧壁相连，另一端位于所述导向槽中，且能够沿所述导向槽移动。
可选地，所述导向槽的延伸方向与所述底壁垂直。
可选地，所述折叠机构还包括弹性件，所述弹性件位于所述导向槽中，与所述导向槽的侧壁和所述销轴相连。
可选地，所述摆臂的表面具有导槽，所述导槽沿所述摆臂的长度方向延伸；
所述第二摆动件与所述导槽相连，且能够沿所述导槽相对所述摆臂滑动。
可选地，所述第二摆动件包括支撑板，所述支撑板的边缘位于所述导槽中。
可选地，所述基座靠近所述柔性显示面板的表面具有弧形槽；
所述第二摆动件还包括弧形臂，所述弧形臂位于所述支撑板远离所述柔性 显示面板的一侧，且位于所述支撑板靠近所述基座的边缘处，所述弧形臂的一端与所述支撑板相连，另一端位于所述弧形槽中。
可选地，所述基座包括两个子基座，两个所述子基座相互间隔，每个所述子基座均与两个所述折叠机构相连。
可选地，所述折叠机构还包括第一同步齿轮和同步摆臂，所述第一同步齿轮与所述基座转动连接，且所述第一同步齿轮的转动轴线与所述第二摆动件的转动轴线平行，两个所述折叠机构的第一同步齿轮传动连接；
所述同步摆臂的一端与所述第一同步齿轮相连，另一端与所述第二摆动件活动连接，所述同步摆臂用于在所述第二摆动件的作用下带动所述第一同步齿轮转动。
可选地，所述第二摆动件还包括与所述支撑板相连的连接部，所述连接部位于所述支撑板远离所述柔性显示面板的一侧，且位于所述同步摆臂的侧方，所述连接部上具有滑槽，所述同步摆臂与所述滑槽滑动配合。
可选地，所述同步摆臂包括杆部和滑动部，所述杆部的一端与所述第一同步齿轮相连，所述杆部的另一端与所述滑动部相连，所述滑动部位于所述滑槽中，且能够沿所述滑槽移动。
可选地，所述显示装置还包括柔性块，在展平状态下，所述柔性块位于两个所述折叠机构的摆臂的第一端的端面之间。
可选地，所述面板本体包括依次层叠设置的底膜、显示功能层、偏光片和盖板，所述显示功能层包括基板和位于所述基板上的有机发光二极管。
可选地，所述底膜、所述显示功能层和所述偏光片在所述盖板表面的正投影均位于所述盖板内。
可选地，所述支撑层包括支撑层主体和柔性层，所述柔性层位于所述支撑层主体靠近所述面板本体的一面。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是相关技术中的一种柔性显示面板的结构示意图；
图2是本公开实施例提供的一种柔性显示面板的结构示意图；
图3是本公开实施例提供的一种显示装置的结构示意图；
图4是在展平状态下柔性显示面板的结构示意图；
图5是在合拢状态下柔性显示面板的结构示意图；
图6是本公开实施例提供的折叠机构与基座的分解结构示意图；
图7是本公开实施例提供的折叠机构与基座的连接示意图；
图8是本公开实施例提供的折叠机构与基座的连接示意图；
图9是本公开实施例提供的一种折叠支架的局部结构示意图；
图10是本公开实施例提供的一种折叠支架的局部结构示意图；
图11是本公开实施例提供的一种摆臂与基座的连接示意图；
图12是本公开实施例提供的另一种摆臂与基座的连接示意图；
图13是本公开实施例提供的一种第一摆动件与基座的连接示意图；
图14是本公开实施例提供的一种第一摆动件和第二摆动件的连接示意图；
图15是本公开实施例提供的一种第二摆动件与基座的连接示意图；
图16是本公开实施例提供的一种折叠机构的结构示意图；
图17是本公开实施例提供的一种同步摆臂的安装示意图；
图18是本公开实施例提供的一种显示装置的结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开专利申请说明书以及权利要求书中使用的“第一”、“第二”、“第三”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同，并不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后， 则所述相对位置关系也可能相应地改变。
物体在进行弯折时，弯折处会产生应力，弯折半径越小，应力也越大，并且在弯折半径相同的情况下，物体的厚度越厚，应力也越大。对于柔性显示面板也是如此。折叠式的移动终端通常包括折叠支架和柔性显示面板。折叠支架可以相对开合，以带动柔性显示面板折叠。而柔性显示面板在弯折时，就会受到弯折处的应力的影响。弯折半径越小，应力越大，导致柔性显示面板容易损坏。
图1是相关技术中的一种柔性显示面板的结构示意图。如图1所示，该柔性显示面板包括面板本体11和支撑层12。面板本体11具有相反的正面和背面，其中正面为显示面，显示面用于进行显示。支撑层12位于面板本体11的背面，支撑层12与面板本体11相连，例如通过压敏胶层13粘接。柔性显示面板在弯折时，弯折处的应力越大，越有可能导致柔性显示面板的损坏，影响柔性显示面板的寿命。厚度越厚的柔性显示面板，为了追求较小的弯折半径，往往也更容易损坏，寿命更短。
图2是本公开实施例提供的一种柔性显示面板的结构示意图。如图2所示，该柔性显示面板包括相互分离的面板本体11和支撑层12。也就是说，支撑层12位于面板本体11的背面，但支撑层12与面板本体11之间没有相连。
作为一种示例，该面板本体11包括依次层叠设置的底膜111、显示功能层112、偏光片113和盖板114。例如，该柔性显示面板为有机发光二极管显示面板，则显示功能层112可以包括基板和位于基板上的有机发光二极管。显示功能层112与底膜111通过第一压敏胶层115相连；偏光片113与显示功能层112通过第二压敏胶层116相连；盖板114与偏光片113通过透明光学胶117相连。底膜111、显示功能层112和偏光片113在盖板114表面的正投影可以均位于盖板114内。也就是说，盖板114的边缘超出底膜111、显示功能层112和偏光片113，可以方便面板本体11的安装，详见后续说明。盖板114至少在对应显示功能层112的区域是透光的。
支撑层12包括支撑层主体121和柔性层122。例如，支撑层主体121和柔性层122通过第三压敏胶层123粘接。柔性层122位于支撑层主体121靠近面板本体11的一面，以隔开支撑层主体121和面板本体11。柔性层122较柔软，能避免支撑层主体121损伤面板本体11。支撑层主体121可以为金属片，既能够进行弯折，又能够起到支撑的作用，使柔性显示面板能保持平整。例如不锈 钢片。
支撑层12的寿命一般比较长，折叠过程中应力导致的损坏通常发生在面板本体11，面板本体11一旦受损，往往会导致柔性显示面板无法正常显示。
图3是本公开实施例提供的一种显示装置的结构示意图。该显示装置可以是但不限于是手机、平板电脑。本公开实施例中以手机为例进行说明。如图3所示，该显示装置包括折叠支架20和柔性显示面板10。
折叠支架20包括基座21和两个折叠机构22，两个折叠机构22分别与基座21转动连接，且两个折叠机构22能够相对开合。该显示装置具有展平状态和合拢状态。显示装置处于展平状态时，折叠支架20的两个折叠机构22展平；显示装置处于合拢状态时，折叠支架20的两个折叠机构22合拢。
柔性显示面板10包括相互分离的支撑层12和面板本体11，例如该柔性显示面板10可以为如图2所示的柔性显示面板。
该显示装置中，支撑层12位于面板本体11的背面，支撑层12和面板本体11均分别与两个折叠机构22相连。
图4是在展平状态下柔性显示面板的结构示意图。图5是在合拢状态下柔性显示面板的结构示意图。结合图4和图5所示，该折叠机构22被配置为，带动面板本体11和支撑层12相互错动，且在两个折叠机构22相对展开时，面板本体11相对支撑层12的运动方向指向基座21，在两个折叠机构22相对合拢时，面板本体11相对支撑层12的运动方向背离基座21。
这里所指的两个折叠机构22相对展开，是指两个折叠机构22之间的张角，或是柔性显示面板的张角，逐渐增大；两个折叠机构22相对合拢，是指两个折叠机构22之间的张角，或是柔性显示面板的张角，逐渐减小。
通过将柔性显示面板10的支撑层12和面板本体11设置成相互分离的形式，将支撑层12和面板本体11分别连接到折叠机构22，利用折叠机构22的开合，使支撑层12和面板本体11能够发生相对错动。在合拢的过程中，面板本体11相对支撑层12的运动方向背离基座21，使得到达合拢状态时，面板本体11的弯折部位和支撑层12的弯折部位相互分离。如图5所示，在弯折部位，面板本体11和支撑层12之间形成了间隙A，降低了面板本体11在弯折部位的应力，有利于避免柔性显示面板受损，延长使用寿命。在两个折叠机构22相对展开时，面板本体11相对支撑层12的运动方向指向基座21，使面板本体11和支撑层12在展平状态时能相互贴合，保持柔性显示面板10的平整。
此外，由于降低了在合拢状态下，面板本体11的弯折部位的应力，因此在保证面板本体11不受损的情况下，相比于相关技术中的显示装置，本公开实施例中的显示装置能够以更小的弯折半径进行弯折。这样有利于在保证使用寿命满足要求的情况下，进一步降低显示装置在合拢状态时的厚度。
图6是本公开实施例提供的折叠机构与基座的分解结构示意图。如图6所示，该折叠机构22包括第一摆动件221和第二摆动件222。
第一摆动件221和第二摆动件222分别与基座21转动连接，使第一摆动件221和第二摆动件222均能够相对基座21转动。
第一摆动件221和第二摆动件222滑动连接，第一摆动件221能够相对第二摆动件222沿靠近或远离基座21的方向移动。
图7和图8均是本公开实施例提供的折叠机构与基座的连接示意图。图7为展开状态。图8为合拢状态。如图7和图8所示，在合拢状态下，第一摆动件221到第二摆动件222的转动轴线222m的最大距离D，大于在展平状态下，第一摆动件221到第二摆动件222的转动轴线222m的最大距离d。
支撑层12与两个折叠机构22的第二摆动件222分别相连，面板本体11与两个折叠机构22的第一摆动件221分别相连。
第一摆动件221到第二摆动件222的转动轴线222m的最大距离，可以指第一摆动件221远离基座21的一端的边缘与第二摆动件222的转动轴线222m之间的距离。柔性显示面板10承载在两个折叠机构22上，面板本体11可相互弯折的两部分与两个折叠机构22的第一摆动件221分别相连。第一摆动件221到第二摆动件222的转动轴线的最大距离，也可以指面板本体11与第一摆动件221相连的一部分，远离第二摆动件222的转动轴线222m的侧边与第二摆动件222的转动轴线222m之间的距离。
由于在合拢状态下和展平状态下，第一摆动件221到第二摆动件222的转动轴线222m的最大距离不同，并且在合拢状态下，该最大距离较大，因此从合拢状态变换到展平状态，或是由展平状态变换到合拢状态，面板本体11和支撑层12会在第一摆动件221和第二摆动件222的作用下相互错动。并且相比于展平状态，在合拢状态下，第一摆动件221到第二摆动件222的转动轴线222m的最大距离更大。这使得在合拢状态下，受第一摆动件221和第二摆动件222的影响，面板本体11的弯折处与支撑层12的弯折处相互分离。例如图5中面板本体11的弯折处与支撑层12的弯折处形成了间隙A，相当于单独对面板本体 11和支撑层12进行弯折，支撑层12的弯折处对面板本体11不再有作用力，减小了面板本体11弯折处的应力，使面板本体11不容易受损，寿命更长。
图9和图10是本公开实施例提供的一种折叠支架的局部结构示意图。其中图9所示为合拢状态，图10所示为展平状态。如图9和图10所示，基座21靠近柔性显示面板10的表面具有安装槽21a，该安装槽21a包括底壁211和至少一个侧壁212。
第一摆动件221包括摆臂2211和销轴2212。摆臂2211的第一端位于安装槽21a中，第二端位于安装槽21a外。销轴2212与摆臂2211和安装槽21a的侧壁212相连。
在展平状态下，摆臂2211的侧面与安装槽21a的底壁211接触，销轴2212到摆臂2211的第一端的端面的距离H大于销轴2212到安装槽21a的底壁211的距离h。在合拢状态下，摆臂2211的第一端的端面与安装槽21a的底壁211接触。
在展平状态和合拢状态，摆臂2211的不同表面与安装槽21a的底壁211接触。在展平状态时，摆臂2211的一个侧面与安装槽21a的底壁211接触，在合拢状态时，摆臂2211的第一端的端面与安装槽21a的底壁211接触。由于距离H大于距离h，因此从展平状态变换到合拢状态的过程中，随着摆臂2211的转动，摆臂2211的第一端会与安装槽21a的底壁211相互作用，推动摆臂2211与第二摆动件222产生相对移动，从而实现面板本体11和支撑层12的错动。
在一些示例中，在展平状态下，销轴2212的轴心与第二摆动件222的转动轴线222m可以重合，即此时第一摆动件221的转动轴线与第二摆动件222的转动轴线重合。在另一些示例中，在展平状态下，销轴2212的轴心与第二摆动件222的转动轴线222m也可以不重合。
在合拢状态下，销轴2212的轴心与第二摆动件222的转动轴线222m不重合。
作为示例，参照图4，在展平状态下，在柔性显示面板10远离基座21的相对的两侧边处，面板本体11的边缘与支撑层12的边缘对齐，即支撑层12远离基座21的侧边在面板本体11的背面的正投影与面板本体11远离基座21的侧边重合或是部分重合(支撑层12的侧边的长度与面板本体11的侧边的长度不相等则部分重合)；参照图5，在合拢状态下，在柔性显示面板10远离基座21的相对的两侧边处，支撑层12的边缘与面板本体11的边缘相互错开，支撑层 12远离基座21的侧边在面板本体11的背面的正投影位于面板本体11的背面内，与面板本体11的背面远离基座21的侧边不重合，两者之间的间距为H-h。
如图9和图10所示，摆臂2211的第一侧面2211a与摆臂2211的第一端的端面的连接处具有圆角2211b。这里的第一侧面2211a是指，在展平状态下，摆臂2211与安装槽21a的底壁211相接触的一个侧面。
在摆臂2211相对基座21转动的过程中，摆臂2211与基座21相互接触。摆臂2211的第一端相当于一个凸轮结构，从展平状态变换到合拢状态的过程中，随着摆臂2211的转动，摆臂2211的第一端会与安装槽21a的底壁211相互作用，推动摆臂2211与第二摆动件222产生相对移动。圆角2211b能够使摆臂2211的转动更平稳，平稳过渡到摆臂2211的第一端的端面与安装槽21a的底壁211接触。
如图9所示，安装槽21a的侧壁212具有导向槽212a，导向槽212a的延伸方向与安装槽21a的底壁211呈非零夹角。销轴2212的一端与摆臂2211相连，销轴2212的另一端位于导向槽212a中，且销轴2212能够沿导向槽212a移动。
示例性地，导向槽212a的延伸方向与安装槽21a的底壁211所呈夹角为80°～90°。例如，导向槽212a的延伸方向与底壁211垂直。
从展平状态变换到合拢状态的过程中，随着摆臂2211的转动，摆臂2211的第一端与安装槽21a的底壁211相互作用，推动摆臂2211与第二摆动件222产生相对移动，在此过程中，销轴2212随着摆臂2211在导向槽212a中移动，且滑向导向槽212a远离安装槽21a的底壁211的一端。导向槽212a能够限制销轴2212的运动方向，使第一摆动件221的转动平稳。
图11是本公开实施例提供的一种摆臂与基座的连接示意图。如图11所示，该折叠机构22还包括弹性件2214。弹性件2214位于导向槽212a中，弹性件2214与导向槽212a的侧壁和销轴2212相连。
例如，弹性件2214位于销轴2212远离安装槽21a的底壁211的一侧。
弹性件2214提供的弹力使销轴2212在导向槽212a中保持稳定。从展平状态变换到合拢状态的过程中，随着摆臂2211的转动，销轴2212沿着导向槽212a滑向导向槽212a远离安装槽21a的底壁211的一端，弹性件2214被逐渐压缩。从合拢状态变换到展平状态的过程中，随着摆臂2211的转动，弹性件2214作用到销轴2212的弹力使销轴2212滑向导向槽212a靠近安装槽21a的底壁211的一端。
示例性地，弹性件2214为弹簧。在其他示例中，弹性件2214还可以为弹片，或是其他可以提供弹力的部件。
图12是本公开实施例提供的另一种摆臂与基座的连接示意图。如图12所示，该示例中，摆臂2211的表面具有导向槽212a，导向槽212a沿摆臂2211的长度方向延伸。销轴2212的一端与安装槽21a的侧壁212相连，销轴2212的另一端位于导向槽212a中，且销轴2212能够沿导向槽212a移动。
该示例中，在展平状态时，摆臂2211的侧面与安装槽21a的底壁211接触，此时销轴2212与摆臂2211的第一端的端面的距离较大。从展平状态变换到合拢状态的过程中，随着摆臂2211的转动，销轴2212在导向槽212a中沿靠近摆臂2211的第一端的端面的方向移动，销轴2212与摆臂2211的第一端的端面的距离逐渐减小。
在该示例中，导向槽212a中也可以设置有弹性件2214。例如将弹性件2214布置在销轴2212靠近摆臂2211的第一端的端面的一侧。从展平状态变换到合拢状态的过程中，随着摆臂2211的转动，销轴2212在导向槽212a中沿靠近摆臂2211的第一端的端面的方向滑动，弹性件2214被逐渐压缩。从合拢状态变换到展平状态的过程中，随着摆臂2211的转动，弹性件2214作用到销轴2212的弹力使销轴2212沿远离摆臂2211的第一端的端面的方向滑动。
图13是本公开实施例提供的一种第一摆动件与基座的连接示意图。如图13所示，第一摆动件221可以包括两个摆臂2211和两个销轴2212，每个摆臂2211分别通过销轴2212与基座21相连，且两个销轴2212同轴布置。通过布置两个摆臂2211，以更好地支撑面板本体11，使显示装置在折叠的过程中更加平稳。
在本公开实施例中，该第一摆动件221还包括连杆2213，连杆2213位于两个摆臂2211之间，连杆2213的两端分别与两个第一摆臂2211的第二端相连。连杆2213和两个摆臂2211形成一个一边开口的框形结构，不仅能够使显示装置的结构更加稳定，并且还能够更好地连接和支撑面板本体11。
示例性地，连杆2213和两个摆臂2211可以分别与面板本体11的三条侧边相连。例如通过粘接的方式与面板本体11相连。
如图2所示，盖板114的边缘超出底膜111、显示功能层112和偏光片113，底膜111、显示功能层112和偏光片113可以位于框形结构中。盖板114的边缘超出底膜111、显示功能层112和偏光片113的部分与连杆2213和两个摆臂2211相连。盖板114的边缘超出底膜111、显示功能层112和偏光片113，提供了较 大的面积与连杆2213和两个摆臂2211相连。框形结构围在底膜111、显示功能层112和偏光片113外，还能起到保护作用，避免底膜111、显示功能层112和偏光片113受损。
对于尺寸较小的显示装置，第一摆动件221通过一个摆臂2211与基座21相连，第一摆动件221的转动就比较平稳。而对于尺寸较大的显示装置，第一摆动件221就可以通过两个摆臂2211与基座21进行连接，以提高第一摆动件221转动的平稳性。
如图13所示，摆臂2211的表面还具有导槽2211c，导槽2211c沿摆臂2211的长度方向延伸。该导槽2211c用于连接第二摆动件222。
第二摆动件222与导槽2211c相连，且第二摆动件222能够沿导槽2211c相对摆臂2211滑动。
两个折叠机构22相对开合的过程中，第二摆动件222和摆臂2211沿导槽2211c相对滑动。导槽2211c既连接了第一摆动件221和第二摆动件222，又限制了第一摆动件221和第二摆动件222的相对运动方向，使两者间的相对运动更加平稳。
在本公开实施例中，第一摆动件221包括两个摆臂2211，两个摆臂2211均具有导槽2211c。导槽2211c位于两个摆臂2211相对的表面上，即两个摆臂2211的导槽2211c是相对的，使得两个摆臂2211能够从第二摆动件222的两侧分别与第二摆动件222形成配合，使第一摆动件221和第二摆动件222能更加平稳地相对运动。
图14是本公开实施例提供的一种第一摆动件和第二摆动件的连接示意图。图14中示出了在图13中虚线M处的截面。如图14所示，第二摆动件222包括支撑板2221，支撑板2221的边缘位于导槽2211c中。
支撑板2221能够提供较大的面积对柔性显示面板10进行支撑，使得在展平状态时，柔性显示面板10保持平整。
支撑板2221的边缘伸入导槽2211c中，与导槽2211c形成配合，使支撑板2221能沿着导槽2211c与摆臂2211发生相对运动。
示例性地，支撑层12与支撑板2221可以粘接，例如通过压敏胶粘接。
支撑板2221可以是一整块板，也可以是由多块板相连形成。例如图14中所示支撑板2221有两块较小的板和一块较大的板相连形成，例如，多块板通过螺丝相连。
图15是本公开实施例提供的一种第二摆动件与基座的连接示意图。如图15所示，基座21靠近柔性显示面板10的表面具有弧形槽210b。
第二摆动件222还包括弧形臂2222，弧形臂2222位于支撑板2221远离柔性显示面板10的一侧，且弧形臂2222位于支撑板2221靠近基座21的边缘处。弧形臂2222的一端与支撑板2221相连，弧形臂2222的另一端位于弧形槽210b中。
弧形臂2222与弧形槽210b配合，使第二摆动件222能够相对基座21转动，第二摆动件222的转动轴线为弧形槽210b的轴心。
采用弧形臂2222与弧形槽210b的连接形式，使第二摆动件222能够绕虚拟轴转动。虚拟轴是指位于结构外部，不穿过结构本身的轴线，例如位于第二摆动件222外，不穿过第二摆动件222的轴线。与虚拟轴相对的，采用销轴进行连接，例如第一摆动件221与基座21之间的连接，第一摆动件221的转动轴线就是销轴2212的轴心，该转动轴线穿过第一摆动件221。由于第二摆动件222的转动轴线为弧形槽210b的轴心，是虚拟轴，因此通过调整弧形槽210b和弧形臂2222的半径就能改变第二摆动件222的转动轴线的位置，设计更灵活，方便调整第二摆动件222的运动轨迹。
第二摆动件222可以包括两个或多个弧形臂2222，各弧形臂2222的半径相同，且轴心重合。例如本公开实施例中，第二摆动件222包括两个弧形臂2222，两个弧形臂2222分别与基座21上的两个弧形槽210b形成配合。
对于尺寸较小的显示装置，第二摆动件222通过一个弧形臂2222与基座21相连，第二摆动件222的转动就比较平稳。而对于尺寸较大的显示装置，第二摆动件222就可以通过两个或两个以上的弧形臂2222与基座21进行连接，以提高第二摆动件222转动的平稳性。
如图15所示，在弧形槽210b的侧壁和弧形臂2222的侧壁还具有相互配合的导向结构。在本公开实施例中，弧形槽210b的侧壁具有凸棱2101，凸棱2101呈弧形，凸棱2101的轴心与弧形槽210b的轴心重合。弧形臂2222的侧壁具有凹槽2222a，凹槽2222a呈弧形，凹槽2222a的轴心与弧形臂2222的轴心重合。凸棱2101位于凹槽2222a中，在第二摆动件222转动的过程中，凸棱2101在凹槽2222a中滑动。由凸棱2101与凹槽2222a相配合，使第二摆动件222的转动更平稳。
在其他示例中，凸棱2101和凹槽2222a的位置也可以互换。例如，在弧形 槽210b的侧壁设置凹槽2222a，凹槽2222a的轴心与弧形槽210b的轴心重合。在弧形臂2222的侧壁设置凸棱2101，凸棱2101的轴心与弧形臂2222的轴心重合。
如图15所示，在基座21靠近柔性显示面板10的表面上，与两个折叠机构22的第二摆动件222相连的弧形槽210b，在平行于弧形槽210b的轴心的方向上相互交错，这样有利于节省空间。
基座21可以包括两个子基座210，两个子基座210相互间隔。例如本公开实施例中，第一摆动件221包括两个摆臂2211，第二摆动件222包括两个弧形臂2222，第一摆动件221的一个摆臂2211和第二摆动件222的一个弧形臂2222与一个子基座210相连，第一摆动件221的另一个摆臂2211和第二摆动件222的另一个弧形臂2222与另一个子基座210相连。通过设置两个相互间隔的子基座210与折叠机构22进行连接，有利于减小基座21的体积，降低显示装置的重量。
在一些示例中，两个子基座210也可以相连为一个整体。例如，两个子基座210通过连接件可拆卸相连，连接件可以是螺钉等；又例如，两个子基座210通过一体成型工艺制作成一个整体。
图16是本公开实施例提供的一种折叠机构的结构示意图。如图16所示，该折叠机构22还包括第一同步齿轮223和同步摆臂224。第一同步齿轮223与基座21转动连接，且第一同步齿轮223的转动轴线与第二摆动件222的转动轴线平行。两个折叠机构22的第一同步齿轮223传动连接。
同步摆臂224的一端与第一同步齿轮223相连，同步摆臂224的另一端与第二摆动件222活动连接。同步摆臂224用于在第二摆动件222的作用下带动第一同步齿轮223转动。
例如，本公开实施例中，在两个折叠机构22的第一同步齿轮223之间还设置有第二同步齿轮225，两个折叠机构22的第一同步齿轮223与第二同步齿轮225啮合。在其他示例中，也可以将两个折叠机构22的第一同步齿轮223相互啮合。
两个折叠机构22的第一同步齿轮223传动连接，使得两个折叠机构22的同步摆臂224能够同步转动，并且转动方向相反，从而带动两个折叠机构22同步运动，并相对开合。
如图16所示，第二摆动件222还包括与支撑板2221相连的连接部2223。 连接部2223位于支撑板2221远离柔性显示面板10的一侧，且连接部2223位于同步摆臂224的侧方，连接部2223上具有滑槽2223a。同步摆臂224与滑槽2223a滑动配合。
在本示例中，同步摆臂224包括杆部2241和滑动部2242，杆部2241的一端与第一同步齿轮223相连，杆部2241的另一端与滑动部2242相连。滑动部2242位于滑槽2223a中，且滑动部2242能够沿滑槽2223a移动。
同步摆臂224的转动轴线就是第一同步齿轮223的轴心，在本公开实施例中，第一同步齿轮223的轴心与第二摆动件222的转动轴线并不重合。在两个折叠机构22相对开合的过程中，第二摆动件222绕弧形槽210b的轴心转动，同步摆臂224绕第一同步齿轮223的轴心转动。设置滑槽2223a，使滑动部2242能够在滑槽2223a中移动，避免第二摆动件222、基座21和同步摆臂224相互锁死而无法运动。
图17是本公开实施例提供的一种同步摆臂的安装示意图。如图17所示，同步摆臂224还包括安装轴2243，安装轴2243位于杆部2241的一端。第一同步齿轮223套在安装轴2243外，且与安装轴2243周向定位。即第一同步齿轮223与安装轴2243不会产生相对转动。安装轴2243与基座21转动连接，从而将第一同步齿轮223安装到基座21上，且第一同步齿轮223能够相对基座21转动。
在本公开实施例中，在两个折叠机构22的第一同步齿轮223之间还设置有两个第二同步齿轮225。为了稳定安装第二同步齿轮225，该显示装置还可以包括安装板226。第二同步齿轮225的一侧与基座21转动连接，第二同步齿轮225的另一侧与安装板226转动连接。通过安装板226和基座21从第二同步齿轮225的两侧对第二同步齿轮225进行支撑，使第二同步齿轮225能够平稳转动。
如图17所示，安装板226还具有两个连接孔226a，两个连接孔226a分别套在两个折叠机构22的同步摆臂224的安装轴2243外，连接孔226a与安装轴2243间隙配合。连接孔226a不影响同步摆臂224的转动，将连接孔226a套在安装轴2243外，对安装板226提供支撑，避免安装板226松动。
图18是本公开实施例提供的一种显示装置的结构示意图。如图18所示，该显示装置还可以包括柔性块30。在展平状态下，柔性块30位于两个折叠机构22的摆臂2211的第一端的端面之间。柔性块30用于填充间隙，该间隙在展平状态下，位于柔性显示面板10、基座21和两个折叠机构22的摆臂2211的第一 端的端面之间。在两个折叠机构22开合的过程中，柔性块30能够在摆臂2211的挤压下发生形变，既能够填充间隙，又不影响摆臂2211的运动。
示例性地，柔性块30为泡棉。在一些示例中还可以是硅胶等其他柔性材料制成的块状结构。
以上所述仅为本公开的可选实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (20)

  1. 一种显示装置，包括折叠支架(20)和柔性显示面板(10)；
    所述折叠支架(20)包括基座(21)和两个折叠机构(22)，两个所述折叠机构(22)分别与所述基座(21)转动连接，且能够相对开合；
    所述柔性显示面板(10)包括相互分离的支撑层(12)和面板本体(11)，所述支撑层(12)位于所述面板本体(11)的背面，所述背面为与所述面板本体(11)的显示面相反的一面，所述支撑层(12)和所述面板本体(11)均分别与两个所述折叠机构(22)相连；
    所述折叠机构(22)被配置为，带动所述面板本体(11)和所述支撑层(12)相互错动，且在两个所述折叠机构(22)相对展开时，所述面板本体(11)相对所述支撑层(12)的运动方向指向所述基座(21)，在两个所述折叠机构(22)相对合拢时，所述面板本体(11)相对所述支撑层(12)的运动方向背离所述基座(21)。
  2. 根据权利要求1所述的显示装置，其中，所述折叠机构(22)包括第一摆动件(221)和第二摆动件(222)；
    所述第一摆动件(221)和所述第二摆动件(222)分别与所述基座(21)转动连接，且所述第一摆动件(221)和所述第二摆动件(222)滑动连接，所述第一摆动件(221)能够相对所述第二摆动件(222)沿靠近或远离所述基座(21)的方向移动，在合拢状态下，所述第一摆动件(221)到所述第二摆动件(222)的转动轴线的最大距离，大于在展平状态下，所述第一摆动件(221)到所述第二摆动件(222)的转动轴线的最大距离。
  3. 根据权利要求2所述的显示装置，其中，所述支撑层(12)与两个所述折叠机构(22)的所述第二摆动件(222)分别相连，所述面板本体(11)与两个所述折叠机构(22)的所述第一摆动件(221)分别相连。
  4. 根据权利要求3所述的显示装置，其中，所述基座(21)靠近所述柔性显示面板(10)的表面具有安装槽(21a)，所述安装槽(21a)包括底壁(211)和至少一个侧壁(212)；
    所述第一摆动件(221)包括摆臂(2211)和销轴(2212)，所述摆臂(2211)的第一端位于所述安装槽(21a)中，第二端位于所述安装槽(21a)外，所述销轴(2212)与所述摆臂(2211)和所述侧壁(212)相连。
  5. 根据权利要求4所述的显示装置，其中，在展平状态下，所述摆臂(2211)的侧面与所述底壁(211)接触，所述销轴(2212)到所述摆臂(2211)的第一端的端面的距离大于所述销轴(2212)到所述底壁(211)的距离；
    在合拢状态下，所述摆臂(2211)的第一端的端面与所述底壁(211)接触。
  6. 根据权利要求5所述的显示装置，其中，所述摆臂(2211)的第一侧面(2211a)与所述摆臂(2211)的第一端的端面的连接处具有圆角(2211b)，所述第一侧面(2211a)为在展平状态下，所述摆臂(2211)与所述底壁(211)相接触的一个侧面。
  7. 根据权利要求5所述的显示装置，其中，所述侧壁(212)具有导向槽(212a)，所述导向槽(212a)的延伸方向与所述底壁(211)呈非零夹角，所述销轴(2212)的一端与所述摆臂(2211)相连，另一端位于所述导向槽(212a)中，且能够沿所述导向槽(212a)移动；或者，
    所述摆臂(2211)的表面具有导向槽(212a)，所述导向槽(212a)沿所述摆臂(2211)的长度方向延伸，所述销轴(2212)的一端与所述侧壁(212)相连，另一端位于所述导向槽(212a)中，且能够沿所述导向槽(212a)移动。
  8. 根据权利要求7所述的显示装置，其中，所述导向槽(212a)的延伸方向与所述底壁(211)垂直。
  9. 根据权利要求7所述的显示装置，其中，所述折叠机构(22)还包括弹性件(2214)，所述弹性件(2214)位于所述导向槽(212a)中，与所述导向槽(212a)的侧壁和所述销轴(2212)相连。
  10. 根据权利要求4～9任一项所述的显示装置，其中，所述摆臂(2211)的 表面具有导槽(2211c)，所述导槽(2211c)沿所述摆臂(2211)的长度方向延伸；
    所述第二摆动件(222)与所述导槽(2211c)相连，且能够沿所述导槽(2211c)相对所述摆臂(2211)滑动。
  11. 根据权利要求10所述的显示装置，其中，所述第二摆动件(222)包括支撑板(2221)，所述支撑板(2221)的边缘位于所述导槽(2211c)中。
  12. 根据权利要求11所述的显示装置，其中，所述基座(21)靠近所述柔性显示面板(10)的表面具有弧形槽(210b)；
    所述第二摆动件(222)还包括弧形臂(2222)，所述弧形臂(2222)位于所述支撑板(2221)远离所述柔性显示面板(10)的一侧，且位于所述支撑板(2221)靠近所述基座(21)的边缘处，所述弧形臂(2222)的一端与所述支撑板(2221)相连，另一端位于所述弧形槽(210b)中。
  13. 根据权利要求1～9、11～12中的任一项所述的显示装置，其中，所述基座(21)包括两个子基座(210)，两个所述子基座(210)相互间隔，每个所述子基座(210)均与两个所述折叠机构(22)相连。
  14. 根据权利要求11或12所述的显示装置，其中，所述折叠机构(22)还包括第一同步齿轮(223)和同步摆臂(224)，所述第一同步齿轮(223)与所述基座(21)转动连接，且所述第一同步齿轮(223)的转动轴线与所述第二摆动件(222)的转动轴线平行，两个所述折叠机构(22)的第一同步齿轮(223)传动连接；
    所述同步摆臂(224)的一端与所述第一同步齿轮(223)相连，另一端与所述第二摆动件(222)活动连接，所述同步摆臂(224)用于在所述第二摆动件(222)的作用下带动所述第一同步齿轮(223)转动。
  15. 根据权利要求14所述的显示装置，其中，所述第二摆动件(222)还包括与所述支撑板(2221)相连的连接部(2223)，所述连接部(2223)位于所述 支撑板(2221)远离所述柔性显示面板(10)的一侧，且位于所述同步摆臂(224)的侧方，所述连接部(2223)上具有滑槽(2223a)，所述同步摆臂(224)与所述滑槽(2223a)滑动配合。
  16. 根据权利要求15所述的显示装置，其中，所述同步摆臂(224)包括杆部(2241)和滑动部(2242)，所述杆部(2241)的一端与所述第一同步齿轮(223)相连，所述杆部(2241)的另一端与所述滑动部(2242)相连，所述滑动部(2242)位于所述滑槽(2223a)中，且能够沿所述滑槽(2223a)移动。
  17. 根据权利要求1～9、11～12、15～16中的任一项所述的显示装置，其中，所述显示装置还包括柔性块(30)，在展平状态下，所述柔性块(30)位于两个所述折叠机构(22)的摆臂(2211)的第一端的端面之间。
  18. 根据权利要求1～9、11～12、15～16中的任一项所述的显示装置，其中，所述面板本体(11)包括依次层叠设置的底膜(111)、显示功能层(112)、偏光片(113)和盖板(114)，所述显示功能层(112)包括基板和位于所述基板上的有机发光二极管。
  19. 根据权利要求18所述的显示装置，其中，所述底膜(111)、所述显示功能层(112)和所述偏光片(113)在所述盖板(114)表面的正投影均位于所述盖板(114)内。
  20. 根据权利要求1～9、11～12、15～16中的任一项所述的显示装置，其中，所述支撑层(12)包括支撑层主体(121)和柔性层(122)，所述柔性层(122)位于所述支撑层主体(121)靠近所述面板本体(11)的一面。
PCT/CN2023/089843 2022-04-27 2023-04-21 显示装置 WO2023207802A1 (zh)

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