WO2021129407A1 - 一种柔性屏和可折叠设备 - Google Patents

一种柔性屏和可折叠设备 Download PDF

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Publication number
WO2021129407A1
WO2021129407A1 PCT/CN2020/135329 CN2020135329W WO2021129407A1 WO 2021129407 A1 WO2021129407 A1 WO 2021129407A1 CN 2020135329 W CN2020135329 W CN 2020135329W WO 2021129407 A1 WO2021129407 A1 WO 2021129407A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
swing link
bending portion
supporting plate
flexible screen
Prior art date
Application number
PCT/CN2020/135329
Other languages
English (en)
French (fr)
Inventor
黄波
王昌勇
徐治效
黄涛
张辉
李夏
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20904492.4A priority Critical patent/EP4063996A4/en
Publication of WO2021129407A1 publication Critical patent/WO2021129407A1/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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1641—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being formed by a plurality of foldable display components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1681—Details related solely to hinges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • H04M1/022—The hinge comprising two parallel pivoting axes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel

Definitions

  • This application relates to the technical field of electronic devices, and in particular to a flexible screen and a foldable device.
  • the flexible screen is one of the key components to realize the foldable function.
  • the flexible screen may include a flexible display panel and a supporting plate located on the back of the flexible display panel.
  • the flexible display panel has greater flexibility and can be bent at will.
  • the supporting plate has a certain rigidity, so that it can provide a certain supporting effect for the flexible display panel.
  • the supporting plate will limit the minimum bending radius of the flexible screen to a certain extent, and therefore, the folding effect of the flexible screen will be affected.
  • the folded part will form a larger bulge, which will increase the maximum thickness of the foldable device after being folded, which is not conducive to improving the portability of the foldable device after being folded.
  • the application provides a flexible screen and a foldable device that can improve the folding effect.
  • an embodiment of the present application provides a flexible screen, including a flexible display panel and a supporting plate.
  • the flexible display panel has a back surface and a display surface for displaying images.
  • the supporting plate is arranged on the back of the flexible display panel to provide a certain supporting effect for the flexible display panel.
  • the supporting plate has a first fixing portion, a first bending portion, a first connecting portion, a main bending portion, a second connecting portion, a second bending portion, and a second fixing portion that are sequentially arranged along the first direction, Wherein, the first direction is parallel to the surface of the supporting plate.
  • the main bending part can be bent in the folding direction, and the first bending part and the second bending part can be bent away from the folding direction, so that the folding form of the flexible screen can be effectively controlled.
  • the supporting plate can improve the flatness of the flexible display panel through its own rigidity, thereby effectively improving the display effect of the flexible display panel.
  • a flat plate-like structure when the flexible screen is unfolded, a flat plate-like structure can be formed. That is, the surface of the flexible display panel for displaying images can have good flatness to provide a good display effect and visual experience.
  • the first fixing part and the second fixing part when the flexible screen is folded, the first fixing part and the second fixing part can be in parallel with each other, thereby reducing the volume occupied by the flexible screen as much as possible; in addition, it can effectively reduce the outline of the flexible screen.
  • the size of the flexible screen which also helps to improve the safety of the flexible screen.
  • the main bending portion and the second bending portion have greater flexibility than the first fixing portion, the first connecting portion, the second connecting portion and the second fixing portion .
  • the thickness of the first fixing portion, the first connecting portion, the second connecting portion, and the second fixing portion may be greater than the thickness of the first bending portion, the main bending portion, and the second bending portion. Specifically, when the thickness of the supporting plate is not uniform, the area with a smaller thickness is more likely to be bent, and correspondingly, the area with a larger thickness is less likely to be bent.
  • the material density of the first fixing portion, the first connecting portion, the second connecting portion, and the second fixing portion may be greater than the material of the first bending portion, the main bending portion, and the second bending portion density.
  • the weight of the material per unit volume is different; the area where the weight of the material per unit volume is smaller (that is, the material density is smaller) is easier Be bent.
  • the area where the weight of the material per unit volume is greater is less likely to be bent.
  • through holes may be provided in the first bending portion, the main bending portion, and the second bending portion.
  • first bending part As an example, after the first bending part is provided with through holes penetrating the upper and lower plate surfaces of the supporting plate, the rigidity of the area will be reduced. When the supporting plate is bent, a through hole is provided The area is more prone to bending deformation.
  • providing through holes in the main bending portion and the second bending portion can also reduce the rigidity of the area where the through holes are provided.
  • a plurality of through holes may be arranged from one edge to the other edge of the supporting plate.
  • the second direction is parallel to the surface of the supporting plate and perpendicular to the first direction.
  • first bending portion, the main bending portion, and the second bending portion may have a bending area of a certain size.
  • multiple rows of the through holes may be provided in the first bending portion.
  • multiple rows of the through holes can be provided in the main bending portion, and along the first direction, multiple rows of the through holes can be provided in the second bending portion.
  • two adjacent rows of through holes can be staggered to ensure that the first bending part, the main bending part and the second bending part have strong stress performance and fatigue resistance.
  • the area of the main bending portion may be larger than the areas of the first bending portion and the second bending portion.
  • more rows of through holes can be provided in the main bending portion; fewer rows of through holes can be provided in the first bending portion, and fewer rows of through holes can also be provided in the second bending portion.
  • the number of rows of through holes provided in the first bending portion and the second bending portion may be the same or different.
  • the first connecting portion and the second connecting portion may be arranged symmetrically or asymmetrically with respect to the main bending portion.
  • the length of the first connecting portion and the second connecting portion may be the same or different.
  • the first bending portion and the second bending portion may be arranged symmetrically or asymmetrically with respect to the main bending portion.
  • the number of rows of through holes provided in the first bending portion and the number of rows of through holes provided in the second bending portion may be the same or different.
  • the first fixing part and the second fixing part may be arranged symmetrically or asymmetrically with respect to the main bending part.
  • the length of the first fixing portion and the length of the second fixing portion may be the same or different.
  • the cross-sectional profile of the through hole may be circular, elliptical or other shapes.
  • the cross-sectional profile of the through hole is elongated.
  • the longitudinal direction of the cross-sectional profile of the through hole is parallel to the second direction (or perpendicular to the first direction).
  • the supporting plate can be attached to the back of the flexible display panel through an adhesive layer.
  • the adhesive layer may be a double-sided adhesive tape, or an adhesive layer containing materials such as polyurethane, polyethylene, polypropylene and the like.
  • the shape, contour and size of the supporting plate may be the same as or different from the shape, contour and size of the flexible display panel.
  • the supporting plate and the flexible display panel may be rectangular structures of the same size.
  • One of the surface of the supporting plate is completely attached to the back of the flexible display panel to improve the connection strength between the supporting plate and the flexible display panel and the consistency during bending deformation.
  • an embodiment of the present application also provides a foldable device, including a first housing, a second housing, a hinge, and the above-mentioned flexible screen.
  • the first housing and the second housing are connected by a hinge to Realize the foldable function of the foldable device.
  • the first fixing portion of the supporting plate is fixedly connected with the first housing, and the second fixing portion is fixedly connected with the second housing.
  • the structure and bending shape of the hinge can be varied.
  • the flexible screen can also be fixedly connected with part of the structure in the hinge.
  • the hinge may include a main body and a first folding component and a second folding component symmetrically arranged with respect to the main body.
  • the first folding component and the second folding component can rotate toward or away from the main body to realize the folding function of the hinge.
  • the first folding assembly may include: a first swing link, a first swing arm, a first driven arm, and a first support plate.
  • the first swing arm can be rotatably connected with the main body, and the other end can be rotatably connected with the first swing link; one end of the first driven arm can be rotatably connected with the main body, and the other end can be slidably connected with the first swing link; wherein
  • the rotation axis centers of the first driven arm and the first swing arm on the main body are parallel to each other and do not overlap, so that the length of the first folding assembly can be changed when it rotates relative to the main body.
  • the second folding assembly may include: a second swing link, a second swing arm, a second driven arm, and a second support plate.
  • One end of the second swing arm can be rotatably connected with the main body, and the other end can be rotatably connected with the second swing link; one end of the second driven arm can be rotatably connected with the main body, and the other end can be slidably connected with the second swing link; wherein ,
  • the rotation axis centers of the second driven arm and the second swing arm on the main body are parallel to each other and do not overlap, so that the length of the second folding assembly can be changed when it rotates relative to the main body.
  • the first swing link and the second swing link rotate toward each other, the first swing link drives the first follower arm to rotate synchronously, and the first swing link and the first swing arm move relative to the first follower
  • the arm stretches, the second swing link drives the second follower arm to rotate synchronously, and the second swing link and the second swing arm extend relative to the second follower arm to increase the length of the hinge; slide with the first support plate
  • the connected first swing arm or the first driven arm drives the first support plate to rotate forward relative to the first swing link (for example, when the first swing link rotates clockwise, the first support plate is relative to the first swing link.
  • the second swing arm or the second slave arm slidably connected to the second support plate drives the second support plate to rotate forward relative to the second swing link (for example, when the second swing link rotates counterclockwise)
  • the second support plate rotates counterclockwise relative to the second swing link), so that the first support plate, the second support plate and the main body enclose a containing space.
  • the first swing link and the second swing link rotate away from each other, the first swing link drives the first follower arm to rotate synchronously, and the first swing link and the first swing arm rotate relative to the first follower.
  • the movable arm retracts, the second swing link drives the second follower arm to rotate synchronously, and the second swing link and the second swing arm retract relative to the second follower arm to reduce the length of the hinge; and the first support plate
  • the slidably connected first swing arm or the first driven arm drives the first support plate to rotate forward relative to the first swing link (for example, when the first swing link rotates counterclockwise, the first support plate relative to the first swing
  • the connecting rod rotates counterclockwise
  • the second swing arm or the second slave arm slidably connected to the second support plate drives the second support plate to rotate positively relative to the second swing link (for example, when the second swing link clockwise When rotating, the second support plate rotates clockwise relative to the second swing link), so that the first support plate, the second support plate and the main body are flattened into
  • the hinge when the hinge is folded, its length can be stretched well.
  • the first support plate, the main body and the second support plate can gradually enclose the accommodating space; when the hinge is unfolded, The length can be shortened well, and the first supporting plate, the main body and the second supporting plate can be gradually flattened into a supporting surface.
  • the supporting plate can also be fixedly connected with the first supporting plate and the second supporting plate.
  • the first connecting portion of the supporting plate may be bonded to the first supporting plate, and the second connecting portion may be bonded to the second supporting plate.
  • the first supporting plate and the second supporting plate can undergo posture changes such as rotation or sliding along with the folding state of the hinge.
  • the first connecting portion can also change with the corresponding posture of the first supporting plate.
  • the second connecting portion may also change in a corresponding posture with the second supporting plate.
  • the first supporting plate and the second supporting plate can effectively control the shape of the supporting plate (or flexible screen), which is beneficial to increase the use effect and stability of the foldable device.
  • FIG. 1 is a schematic cross-sectional structure diagram of a foldable device provided by an embodiment of the application
  • FIG. 2 is a schematic structural diagram of a flexible screen provided by an embodiment of the application when it is in an unfolded state;
  • FIG. 3 is a schematic diagram of a partial cross-sectional structure when a flexible screen is in a folded state according to an embodiment of the application;
  • FIG. 4 is a schematic structural diagram of a supporting plate provided by an embodiment of the application.
  • Figure 5 is a schematic structural diagram of a foldable device provided by an embodiment of the application.
  • Fig. 6 is a schematic structural diagram of a hinge provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of a partial structure of a hinge provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of a partial structure of a hinge provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of a partial cross-sectional structure of a foldable device in a folded state according to an embodiment of the application.
  • FIG. 10 is a schematic cross-sectional structure diagram of a hinge provided by an embodiment of the application.
  • FIG. 11 is a schematic diagram of a partial structure of a hinge provided by an embodiment of the application.
  • FIG. 12 is a schematic diagram of a partial structure of a hinge provided by an embodiment of the application.
  • FIG. 13 is a schematic diagram of a part of the structure of a hinge provided by an embodiment of the application.
  • the flexible screen provided in the embodiments of the present application can be applied to foldable devices such as foldable mobile phones, foldable tablet computers, notebook computers, and foldable e-books.
  • the flexible screen has a certain degree of bendability. Therefore, in some cases, the flexible screen can be folded, and in other cases, the flexible screen can be unfolded.
  • the flexible screen can be folded accordingly, so that the area of the foldable device can be reduced to improve portability.
  • the flexible screen can be unfolded accordingly, so that a larger display area can be provided to improve user convenience.
  • the posture of the folded part of the flexible screen is not considered.
  • no corresponding structure is provided to effectively control the folding posture of the flexible screen, resulting in a large bulge in the folded part of the flexible screen, which will affect the thickness of the foldable device and the overall posture after folding.
  • the foldable device may include a first body 02 and a second body 03 connected by a hinge 01, and the first body 02 can be folded relative to the second body 03 by the hinge 01, thereby achieving foldability Folding function of the device.
  • One part of the flexible screen 04 is fixedly connected to the first body 02, and the other part is fixedly connected to the second body 03.
  • the flexible screen 04 has a certain degree of flexibility. Therefore, when the first body 02 and the second body 03 are folded by the hinge 01, the part of the flexible screen 04 corresponding to the hinge 01 can be bent and deformed.
  • the bending radius R of the folded part (that is, the part that produces bending deformation) in the flexible screen 04 needs to be greater than a certain value to prevent creases or cracks from occurring. .
  • a larger arch-shaped bulge will be formed in the hinge 01 part (or the folded part of the flexible screen 04), which will affect the thickness of the foldable device.
  • the first body 02 and the second body 03 will also maintain a certain included angle, and cannot be in a state of being parallel to each other, thereby reducing the safety of the foldable device.
  • the hinge 01 when the foldable device is squeezed by an external force, the hinge 01 will bear a greater force, which is prone to deformation, failure and other risks; in addition, foreign objects are likely to be stored in the gap between the first body 02 and the second body 03. This will adversely affect the safety of the flexible screen 04.
  • the embodiments of the present application provide a flexible screen capable of effectively controlling the folding posture and a foldable device using the flexible screen.
  • references described in this specification to "one embodiment” or “some embodiments”, etc. mean that one or more embodiments of the present application include a specific feature, structure, or characteristic described in combination with the embodiment. Therefore, the sentences “in one embodiment”, “in some embodiments”, “in some other embodiments”, “in some other embodiments”, etc. appearing in different places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless it is specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized.
  • the flexible screen 10 includes a flexible display panel 11 (such as an OLED display panel) and a supporting plate 12.
  • the upper surface of the flexible display panel 11 is a display surface for displaying images, and the lower surface is a back surface.
  • the supporting plate 12 is arranged on the back of the flexible display panel 11 through the adhesive layer 13 to provide a certain supporting effect for the flexible display panel 11.
  • the supporting plate 12 has a first fixing portion 121, a first bending portion 122, and a first fixing portion 121, a first bending portion 122, and a first fixing portion 121 that are sequentially arranged along a first direction (from left to right in the figure).
  • the main bending portion 124 can be bent in the folding direction (also can be understood as bending inward), and the first bending portion 122 and the second bending portion 126 can be folded away from the folding direction.
  • the direction is bent (also can be understood as bending outward), so that the folding form of the flexible screen 10 can be effectively controlled.
  • the supporting plate 12 can control the folding posture of the flexible screen 10 through its own structural settings, thereby improving the user experience.
  • the supporting plate 12 may be a plate-like structure with certain rigidity, such as a metal plate, a glass plate, or a plastic plate.
  • the first bending portion 122, the first connecting portion 123, the main bending portion 124, the second connecting portion 125 and the second bending portion 126 jointly constitute the bending portion 120 of the flexible screen 10.
  • the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127 have greater rigidity; the first bending portion 122, the main bending portion 124, and the second bending portion 126 have greater rigidity. So flexible. As shown in FIG.
  • the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127 with greater rigidity are not easily bent and can maintain the flat structure. Therefore, the first bending portion 122, the main bending portion 124, and the second bending portion 126, which are more flexible, are easier to be bent.
  • the main bending portion 124 can be bent in the folding direction, and the first bending portion 122 and the second bending portion 126 can be bent away from the folding direction, the contour A surrounded by the bending portion of the flexible screen 10 is reduced. size.
  • the flexible screen 10 when the flexible screen 10 is unfolded, it can form a flat plate-like structure. That is, the surface of the flexible display panel 11 for displaying images can have good flatness, so as to provide a good display effect and visual experience.
  • the first fixing portion 121 and the second fixing portion 127 when the flexible screen 10 is folded, the first fixing portion 121 and the second fixing portion 127 can be in a state of being parallel to each other, so as to reduce the volume occupied by the flexible screen 10 as much as possible; in addition, the flexible screen can be effectively reduced.
  • the size of the outline A surrounded by 10 also helps to improve the safety of the flexible screen 10.
  • first bending portion 122 In addition, in order to make the first bending portion 122, the main bending portion 124, and the second bending portion 126, compared with the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127, Greater flexibility.
  • the thickness of the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127 may be greater than that of the first bending portion 122, the main bending portion 124, and the second bending portion.
  • the thickness of the folded portion 126 when the thickness of the supporting plate 12 is not uniform, the area with a smaller thickness is more likely to be bent, and correspondingly, the area with a larger thickness is less likely to be bent. Therefore, through the above configuration, when the supporting plate 12 (or the flexible screen 10) is folded, the first bending portion 122, the main bending portion 124, and the second bending portion 126 with a smaller thickness are easier to be bent.
  • the thicknesses of the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127 may be the same or different.
  • the thickness of the first bending portion 122, the main bending portion 124, and the second bending portion 126 may be the same or different, which is not specifically limited in this application.
  • the material density of the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127 may be greater than that of the first bending portion 122 and the main bending portion 124.
  • the material density of the second bending portion 126 when the supporting plate 12 is made of the same material as a whole, and in different areas, the weight of the material per unit volume is different; the area where the weight of the material per unit volume is smaller (that is, the material density is smaller) is more Easy to be bent. Correspondingly, the area where the weight of the material per unit volume is greater (that is, the material density is greater) is less likely to be bent.
  • the first bending portion 122, the main bending portion 124, and the second bending portion 126 with a lower material density are easier to be Bending, therefore, the folding form of the flexible screen 10 can be effectively controlled.
  • the material densities of the first fixing portion 121, the first connecting portion 123, the second connecting portion 125, and the second fixing portion 127 may be the same or different.
  • the material densities of the first bending portion 122, the main bending portion 124, and the second bending portion 126 may be the same or different, which is not specifically limited in this application.
  • through holes 128 may be provided in the first bending portion 122, the main bending portion 124 and the second bending portion 126.
  • first bending portion 122 As an example, after the first bending portion 122 is provided with through holes 128 penetrating the upper and lower plate surfaces of the supporting plate 12, the rigidity of the area will be reduced.
  • the area provided with the through hole 128 is more prone to bending deformation.
  • providing through holes 128 in the main bending portion 124 and the second bending portion 126 can also reduce the rigidity of the area where the through holes 128 are provided.
  • the first bending portion 122, the main bending portion 124, and the second bending portion 126 provided with the through hole 128 are easier It is bent, therefore, the folding form of the flexible screen 10 can be effectively controlled.
  • the size, cross-sectional profile, number, position arrangement and other parameters of the through holes 128 provided in the first bending portion 122, the main bending portion 124 and the second bending portion 126 may be the same or different .
  • the first bending portion 122 takes the first bending portion 122 as an example.
  • the first bending portion 122 is provided with a plurality of through holes, and in the second direction (from top to bottom in the figure), a plurality of through holes 128 It is arranged from one edge (the upper edge in the figure) of the supporting plate 12 to the other edge (the lower edge in the figure).
  • a plurality of rows of the through holes 128 are provided along the first direction (the direction from left to right in the figure).
  • the through holes 128 in two adjacent rows can be arranged in a staggered manner to ensure the stress performance and fatigue resistance of the first bending portion 122.
  • the position arrangement of the through holes 128 can also be set according to the position arrangement of the through holes 128 in the first bending portion 122 described above.
  • the area of the main bending portion 124 may be larger than the areas of the first bending portion 122 and the second bending portion 126.
  • first connecting portion 123 and the second connecting portion 125 may be arranged symmetrically or asymmetrically with respect to the main bending portion 124.
  • the length of the first connecting portion 123 and the second connecting portion 125 may be the same or different.
  • the first bending portion 122 and the second bending portion 126 may be arranged symmetrically or asymmetrically with respect to the main bending portion 124.
  • the number of rows of through holes 128 provided by the first bending portion 122 and the number of rows of through holes 128 provided by the second bending portion 126 may be the same or different.
  • the first fixing part 121 and the second fixing part 127 may be arranged symmetrically or asymmetrically with respect to the main bending part 124.
  • the length of the first fixing portion 121 and the length of the second fixing portion 127 may be the same or different.
  • the cross-sectional profile of the through hole 128 may be a circle, an ellipse, or other shapes.
  • the cross-sectional profile of the through hole 128 is a long strip.
  • the longitudinal direction of the cross-sectional profile of the through hole 128 is parallel to the second direction (or perpendicular to the first direction). ).
  • the supporting plate 12 can be attached to the back of the flexible display panel 11 through the adhesive layer 13.
  • the adhesive layer 13 may specifically be a double-sided adhesive tape, or an adhesive layer containing materials such as polyurethane, polyethylene, polypropylene and the like.
  • the shape, contour and size of the supporting plate 12 may be the same as or different from the shape, contour and size of the flexible display panel 11.
  • the supporting plate 12 and the flexible display panel 11 are rectangular structures of the same size.
  • One of the surface of the supporting plate 12 is completely attached to the back of the flexible display panel 11 to improve the connection strength between the supporting plate 12 and the flexible display panel 11 and the consistency during bending deformation.
  • an embodiment of the present application also provides a foldable device 30, which includes a first housing 31, a second housing 32, a hinge 20, and the above-mentioned flexible screen (the flexible screen is only shown in the figure).
  • the structure of the supporting plate 12), the first shell 31 and the second shell 32 are connected by the hinge 20 to realize the foldable function of the foldable device 30.
  • the first fixing portion 121 of the supporting plate 12 is fixedly connected to the first housing 31, and the second fixing portion 127 is fixedly connected to the second housing 32.
  • the first fixing portion 121 of the supporting plate 12 and the first housing 31 may be fixedly connected to each other.
  • the first fixing portion 121 may be made of an adhesive material (such as double-sided tape, polyurethane, polyethylene, polypropylene, etc.). Etc.) It is fixedly attached to the first housing 31.
  • the second fixing portion 127 of the supporting plate 12 and the second housing 32 may be fixedly connected, specifically, the second fixing portion 127 may be fixedly attached by an adhesive material (such as double-sided tape, polyurethane, polyethylene, polypropylene, etc.) ⁇ 32 ⁇ At the second housing 32.
  • the first fixing portion 121 may also be fixedly connected to the first housing 31 by welding or the like, and the second fixing portion 127 may also be fixedly connected to the second housing 32 by welding or the like. This application does not specifically limit this.
  • the structure and bending shape of the hinge 20 can be various.
  • the flexible screen can also be fixedly connected to a part of the structure in the hinge 20.
  • the embodiment of the application provides a hinge 20 (the specific structure and movement principle of the hinge 20 can be referred to the Chinese patent application number: 201911286336.8, and the invention title is "a hinge and mobile terminal". File, therefore, the following is only a brief description).
  • the hinge 20 includes a main body 21 and a first folding component 22 and a second folding component 23 symmetrically arranged with respect to the main body 21.
  • the first folding component 22 and the second folding component 23 can rotate toward or away from the main body 21, In order to realize the folding function of the hinge 20.
  • the first folding assembly 22 may include: a first swing link 221, a first swing arm 222 (two are shown in the figure), and a first driven arm 223 (two is shown in the figure) ) And the first support plate 224 (not shown in FIG. 7).
  • One end (the right end in the figure) of the first swing arm 222 is rotatably connected to the main body 21, and the other end (the left end in the figure) is rotatably connected to the first swing link 221; one end of the first driven arm 223 (the right end in the figure) ) Is rotatably connected to the main body 21, and the other end (the left end in the figure) is slidably connected to the first swing link 221; wherein the rotation axes of the first driven arm 223 and the first swing arm 222 on the main body 21 are parallel to each other and It does not overlap, so that the length of the first folding assembly 22 can be changed when it rotates relative to the main body 21.
  • the first support plate 224 is rotatably connected with the first swing link 221, and is slidably connected with the first driven arm 223; when the first folding assembly 22 rotates relative to the main body 21, the first support plate 224 can move in the first driven arm.
  • the arm 223 rotates relative to the first swing link 221 under the driving force of the arm 223.
  • the second folding assembly 23 may include a second swing link 231, a second swing arm 232 (two are shown in the figure), and a second driven arm 233 (two is shown in the figure) And a second support plate 234 (not shown in FIG. 8).
  • One end (the left end in the figure) of the second swing arm 232 is rotatably connected to the main body 21, and the other end (the right end in the figure) is rotatably connected to the second swing link 231; one end of the second driven arm 233 (the left end in the figure) ) Is rotatably connected to the main body 21, and the other end (the right end in the figure) is slidably connected to the second swing link 231; wherein the rotation axes of the second driven arm 233 and the second swing arm 232 on the main body 21 are parallel to each other and It does not overlap, so that the length of the second folding assembly 23 can be changed when it rotates relative to the main body 21.
  • the second support plate 234 is rotatably connected with the second swing link 131 and is slidably connected with the second driven arm 233; when the second folding assembly 23 rotates relative to the main body 21, the second support plate 234 can move in the second driven The arm 233 rotates relative to the second swing link 231 under the driving force of the arm 233.
  • the first swing link 121 will slide outward with respect to the first follower arm 123, the first follower arm 123 will drive the first support plate 124 relative to each other.
  • the first swing link 121 rotates clockwise, so that a accommodating space for accommodating (the curved part of) the flexible screen is gradually formed between the first supporting plate 124 and the main body 21.
  • first folding component 22 and the second folding component 23 can be symmetrically arranged with respect to the main body 21, and the basic structure and movement principle of the second folding component 23 can be the same as those of the first folding component 22. Therefore, the second folding component
  • the structural composition and movement principle of the assembly 23 can be referred to the above description of the first folding assembly 22, which will not be repeated here.
  • connection structure between the components in the first folding assembly 22 and the connection structure with the main body 21 will be described below in detail; the connection structure between the components in the second folding assembly 23 can be referred to for the first folding assembly Description of component 22.
  • the specific manner of realizing the rotational connection between the first swing arm 222 and the main body 21 may be a virtual axis type.
  • the main body 21 may include an outer shell 212 and an inner shell 211 that are buckled with each other.
  • the outer shell 212 may be provided with an arc-shaped recess 212a
  • the inner shell 211 may be provided with an arc-shaped protrusion 211a; the outer shell 212 and the inner shell 211
  • the arc-shaped recess 212a and the arc-shaped protrusion 211a are buckled to form the arc-shaped first arc groove 213, which can also be understood as one of the arc-shaped recess 212a and the arc-shaped protrusion 211a
  • An arc-shaped gap is formed between.
  • One end of the first swing arm 222 is provided with a first arc shaft 2221, and the first arc shaft 2221 is assembled in the first arc groove 213 to realize the rotational connection between the first swing arm 222 and the main body 21.
  • the connection structure between the first swing arm 222 and the main body 21 can be well hidden in the main body 21, which is beneficial to improve the integration and use experience of the hinge 20.
  • the first arc groove 213 may be a quarter arc, a third arc, etc.
  • the first arc axis 2221 may be a quarter arc, a third arc, etc.
  • Those skilled in the art can adapt and adjust the specific parameters of the first arc groove 213 and the first arc shaft 2221 according to actual needs, which is not specifically limited in this application.
  • the specific manner of realizing the rotational connection between the second swing arm 232 and the main body 21 may also be a virtual axis type.
  • the outer shell 212 can be provided with an arc-shaped recess 212b
  • the inner shell 211 can be provided with an arc-shaped protrusion 211b; after the outer shell 212 and the inner shell 211 are buckled and fixed, the arc-shaped recess 212b and the arc-shaped
  • the protrusion 211b is buckled to form the arc-shaped second arc groove 214, which can also be understood as an arc-shaped gap formed between the arc-shaped recess 212b and the arc-shaped protrusion 211b.
  • a second arc shaft 2321 is provided at one end of the second swing arm 232, and the second arc shaft 2321 is assembled in the second arc groove 214 to realize the rotational connection between the second swing arm 232 and the main body 21.
  • the connection structure between the second swing arm 232 and the main body 21 can be well hidden in the main body 21, which is beneficial to improve the integration and use experience of the hinge 20.
  • first swing arm 222 and the main body 21 may also be connected in rotation by using a pin or other means.
  • the specific manner of realizing the rotational connection between the first swing arm 222 and the first swing link 121 may be a pin shaft type.
  • first swing arm 222 (the left end in the figure) is provided with a first shaft hole (not shown in the figure), and one end of the first swing link 221 (the right end in the figure) is provided with a second shaft hole (not shown in the figure).
  • Axle hole (not shown in the figure); the pin 241 penetrates through the first and second axle holes to realize the rotational connection between the first swing arm 222 and the first swing link 221.
  • the specific manner of realizing the rotational connection between the second swing arm 232 and the second swing link 231 may be a pin shaft type.
  • one end of the second swing arm 232 (the right end in the figure) can be provided with a third shaft hole (not shown in the figure), and one end of the second swing link 231 (the left end in the figure) is provided with a third shaft hole (not shown in the figure).
  • the pin shaft 242 penetrates the third shaft hole and the fourth shaft hole to realize the rotational connection between the second swing arm 232 and the second swing link 231.
  • first swing arm 222 and the first swing link 221 can also be connected in rotation using the virtual axis connection method described above, or in other ways, the second swing arm 232 is connected to the first swing link 221.
  • the second swing links 231 may also be connected in rotation by using the above-mentioned virtual shaft type connection method, or may be connected in another manner by other methods, which is not specifically limited in this application.
  • the first slave arm 223 and the main body 21 may be connected in rotation by using the above-mentioned virtual shaft type and pin shaft type connection methods, or may be connected in other manners.
  • the first driven arm 223 and the main body 21 are connected in a pin-shaft type connection manner to achieve a rotational connection.
  • one end (the right end in the figure) of the first slave arm 223 is provided with a shaft hole (not shown in the figure), and a pin 243 fixed in the main body 21 passes through the shaft of the first slave arm 223. In the hole, to realize the rotational connection between the first driven arm 223 and the main body 21.
  • the first swing link 221 may be provided with a first sliding groove 2212
  • the first driven arm 223 may be provided with a first sliding rail 2231
  • the first sliding rail 2231 is slidably arranged In the first sliding groove 2212, a sliding connection between the first driven arm 223 and the first swing link 221 is realized.
  • the first sliding groove 2212 may also be provided on the first driven arm 223, and the first sliding rail 2231 may also be provided on the first swing link 221.
  • the shapes of the first sliding groove 2212 and the first sliding rail 2231 may be various; for example, in the embodiment provided in the present application, the cross-sections of the first sliding groove 2212 and the first sliding rail 2231 are cross-shaped. In other embodiments, the cross-sectional shapes of the first sliding groove 2212 and the first sliding rail 2231 may also be trapezoidal, triangular, etc., which are not described in detail herein.
  • the second swing link 231 may be provided with a second slide groove 2312
  • the second driven arm (not shown in the figure) may be provided with a second slide rail (not shown in the figure).
  • the second sliding rail is slidably arranged in the second sliding groove 2312 to realize the sliding connection between the second driven arm and the second swing link 231.
  • the second sliding groove 2312 may also be provided on the second driven arm, and the second sliding rail may also be provided on the second swing link 231.
  • the shapes of the second sliding groove 2312 and the second sliding rail may be various; for example, in the embodiment provided in the present application, the cross-section of the second sliding groove 2312 and the second sliding rail is a cross shape. In other embodiments, the cross-sectional shape of the second sliding groove 2312 and the second sliding rail may also be trapezoidal, triangular, etc., which will not be repeated in this application.
  • first support plate 224 and the first swing link 221 can also be connected in rotation by using the above-mentioned virtual shaft connection, or can be connected in rotation by using a pin connection, or Other connection methods realize rotary connection.
  • the first support plate 224 and the first swing link 221 are connected in a virtual shaft type to achieve a rotational connection.
  • the first swing link 221 is provided with a third arc groove 2213
  • the first support plate 224 is provided with a third arc shaft 2241 that coincides with the third arc groove 2213, and the third arc shaft
  • the 2241 is arranged in the third circular arc groove 2213 to realize the rotational connection between the first support plate 224 and the first swing link 221.
  • the third circular arc groove 2213 and the third circular arc shaft 2241 can be well concealed to prevent exposure, so as to increase the integrity of the hinge 20 in terms of perception.
  • first support plate 224 and the first swing link 221 can also be connected in a pin-shaft manner to achieve a rotational connection, or other connection methods are used to achieve a rotational connection, which is not specifically limited in this application. .
  • the second support plate 234 and the second swing link 231 may also be connected in rotation by using the above-mentioned virtual shaft connection manner.
  • the second swing link 231 can be provided with the same structure as the third arc groove 2213, and the second support plate 234 can also be provided with the same structure as the third arc shaft 2241 to achieve The rotation connection between the second support plate 234 and the second swing link 231.
  • the first support plate 224 is slidably connected to the first driven arm 223.
  • a third sliding groove 2242 is provided on the first support plate 224, a positioning shaft 251 is provided on the first driven arm 223, and the positioning shaft 251 is slidably disposed in the third sliding groove 2242.
  • the positioning shaft 251 located on the first driven arm 223 will push against the side wall of the third sliding groove 2242, causing the first The supporting plate 224 rotates around the first swing link 221.
  • the third sliding groove 2242 can be an arc groove, a linear groove, an irregular curve groove, etc.; in practical applications, the third sliding groove 2242 can be adjusted according to the target motion trajectory of the first support plate 224 shape.
  • the first support plate 224 is rotatably connected with the left end of the first swing link 221 (the third circular arc groove 2213 is arranged close to the left end of the first swing link 221).
  • the first swing link 221 rotates clockwise and slides outward along the first driven arm 223.
  • the positioning shaft 241 pushes against the side wall of the third sliding groove 2242.
  • the first support plate 224 rotates in a clockwise direction relative to the first swing link 221, so as to gradually move between the first support plate 224 and the main body 21 (inner housing 211). Form a containment space.
  • the first swing link 221 rotates counterclockwise and slides inward along the first driven arm 223.
  • the positioning shaft 241 pushes against the side wall of the third sliding groove 2242 , And slide in the third sliding groove 2242, so that the first support plate 224 rotates counterclockwise relative to the first swing link 221.
  • the hinge 20 is fully extended, the upper surface of the first support plate 224 and the main body The upper surface of 21 (inner shell 211) is flush, so as to provide a flat supporting surface for the flexible screen.
  • the structural composition of the second folding assembly 23 can be the same as that of the first folding assembly 22, and is arranged symmetrically with respect to the main body 21; in simple terms, the second supporting plate 234 can be provided with There is a fourth sliding groove 2342, the second driven arm 233 can be provided with a positioning shaft 252, the positioning shaft 252 is slidably arranged in the fourth sliding groove 2342, when the second driven arm 233 and the second swing link 231 When relative sliding occurs therebetween, the positioning shaft 252 on the second driven arm 233 will push against the side wall of the fourth sliding groove 2342 to make the second support plate 234 rotate around the second swing link 231.
  • the second folding assembly 23 please refer to the above-mentioned related description of the first folding assembly 22, which will not be repeated here.
  • the hinge 20 may also include a synchronization assembly to achieve the first Synchronous reverse rotation between the one folding component 22 and the second folding component 23 (synchronized opposite rotation and synchronized deviation rotation).
  • the structural form of the synchronization component and the connection relationship between the first folding component 22 and the second folding component 23 can be diverse.
  • the synchronization assembly may include a gear structure and is drivingly connected with the first driven arm 223 and the second driven arm 233.
  • the synchronizing assembly includes a first gear 261 and a second gear 262 that are engaged with each other.
  • the first gear 261 is fixed at one end of the first driven arm 223 (in some embodiments, it may also be in the first driven arm 223).
  • the gear structure is directly formed at the right end
  • the second gear 262 is fixed to one end of the second driven arm 233 (in some embodiments, the gear structure may be directly formed at the left end of the second driven arm 233)
  • the axis of the second gear 262 coincides with the axis of rotation of the first driven arm 223 on the main body 21, and the axis of the second gear 262 coincides with the axis of rotation of the second driven arm 233 on the main body 21.
  • a driven gear 263 and a driven gear 264 meshing are provided between the first gear 261 and the second gear 262, the driven gear 263 meshes with the first gear 261, and the driven gear 164 meshes with the second gear 162; That is, the first driven arm 223 and the second driven arm 233 realize synchronous rotation through the first gear 261, the second gear 262, the driven gear 263, and the driven gear 264.
  • the first fixing portion 121 of the supporting plate 12 can be bonded to the first housing 21, and the second fixing portion 127 of the supporting plate 12 can be bonded to the second housing 22 on. Because during the folding and unfolding process of the hinge 20, the length of the hinge 20 can be elongated or shortened as the folding angle changes. Therefore, during the folding and unfolding process of the foldable device 30, the length of the connection between the first housing 21, the hinge 20, and the second housing 22 will be extended or shortened, so that it will not interfere with the support plate 12 (or flexible Screen) causes squeezing and stretching forces.
  • the length of the hinge 20 when the foldable device 30 is gradually unfolded, the length of the hinge 20 will gradually shorten, when the foldable device 30 is fully unfolded (the angle between the first housing 21 and the second housing 22 is 180° ), the length of the hinge 20 is the same as the length of the curved portion 120 in the supporting plate 12.
  • the first supporting plate 224, the inner shell 211 and the second supporting plate 234 will form a flat supporting surface, so as to be able to support
  • the board 12 (or flexible screen) provides good support.
  • the length of the hinge 20 will gradually extend, so as to ensure that no compressive force is generated on the curved portion 120 of the supporting plate 12.
  • the first supporting plate 224, the inner shell 211, and the second support plate 234 will gradually enclose the accommodating space for accommodating the curved portion 120 (the cross-section of the accommodating space may be similar to the shape of a drop) to prevent the curved portion 120 from bending at a large angle to avoid bending The occurrence of undesirable phenomena such as marks.
  • the supporting plate 12 may also be fixedly connected to the first supporting plate 224 and the second supporting plate 234.
  • the first connecting portion 123 of the supporting plate 12 may be bonded to the first supporting board 224
  • the second connecting portion 125 may be bonded to the second supporting board 234. Since during the folding and unfolding process of the hinge 20, the first support plate 224 and the second support plate 234 will not have undesirable effects such as stretching and compression on the bent portion 120, and at the same time, they can effectively affect the support plate 12 (or The shape of the flexible screen is more effectively controlled, which is beneficial to increase the use effect and stability of the foldable device 30.
  • the flexible screen 10 provided in the present application can still be well matched with the foldable device 30.

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Abstract

一种柔性屏和可折叠设备，涉及电子设备技术领域，以解决柔性屏折叠效果差的技术问题。柔性屏(10)包括柔性显示面板(11)和承托板(12)；柔性显示面板(11)具有背面和用于显示图像的显示面；承托板(12)设置在柔性显示面板(11)的背面，用于对柔性显示面板(11)提供一定的支撑作用；承托板(12)具有沿第一方向依次设置的第一固定部(121)、第一弯折部(122)、第一连接部(123)、主弯折部(124)、第二连接部(125)、第二弯折部(126)和第二固定部(127)，第一方向平行于承托板(12)的板面；柔性屏(10)被折叠后，主弯折部(124)可以朝折叠方向进行弯曲，第一弯折部(122)和第二弯折部(126)可以背离折叠方向进行弯曲，从而能够对柔性屏(10)的折叠形态进行有效控制；这一设计能够对折叠状态进行有效控制，以提升折叠效果。

Description

一种柔性屏和可折叠设备
相关申请的交叉引用
本申请要求在2019年12月27日提交中国专利局、申请号为201911378915.5、申请名称为“可折叠终端”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；本申请要求在2020年04月23日提交中国专利局、申请号为202010327242.7、申请名称为“一种柔性屏和可折叠设备”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
本申请涉及电子设备技术领域，尤其涉及一种柔性屏和可折叠设备。
背景技术
在可折叠设备中，柔性屏是实现可折叠功能的关键部件之一。柔性屏可以包括柔性显示面板和位于其背部的承托板，柔性显示面板具备较大的柔性，从而可以为随意弯曲。承托板具有一定的刚性，从而能够为柔性显示面板提供一定的支撑作用。但是，当柔性屏被折叠时，承托板会在一定程度上限制柔性屏的最小弯折半径，因此，会影响柔性屏的折叠效果。具体来说，当可折叠设备被折叠后，被折叠的部分会形成较大隆起，该隆起会增加可折叠设备被折叠后的最大厚度，从而不利于提升可折叠设备被折叠后的便携性。
发明内容
本申请提供了一种能够提升折叠效果的柔性屏和可折叠设备。
一方面，本申请实施例提供了一种柔性屏，包括柔性显示面板和承托板。柔性显示面板具有背面和用于显示图像的显示面。承托板设置在柔性显示面板的背面，用于对柔性显示面板提供一定的支撑作用。其中，承托板具有沿第一方向依次设置的第一固定部、第一弯折部、第一连接部、主弯折部、第二连接部、第二弯折部和第二固定部，其中，第一方向平行于承托板的板面。柔性屏被折叠后，主弯折部可以朝折叠方向进行弯曲，第一弯折部和第二弯折部可以背离折叠方向进行弯曲，从而能够对柔性屏的折叠形态进行有效控制。另外，当柔性屏被展开后，承托板能够通过自身的刚性来提升柔性显示面板的平面度，从而有效提升柔性显示面板的显示效果。
在具体实施时，当柔性屏被展开后，可以形成平直的板状结构。即柔性显示面板用于显示图像的表面可以具备较好的平面度，以提供良好的显示效果和视觉体验。另外，当柔性屏被折叠后，第一固定部和第二固定部可以处于相互平行的状态，从而尽可能的降低柔性屏所占用的体积大小；另外，还能有效降低柔性屏所围成轮廓的大小，从而还有助于提升柔性屏的安全性。
在具体实施时，为了使得第一弯折部、主弯折部和第二弯折部相较于第一固定部、第一连接部、第二连接部和第二固定部具有较大的柔性。
在一种实现方式中，第一固定部、第一连接部、第二连接部和第二固定部的厚度可以大于第一弯折部、主弯折部和第二弯折部的厚度。具体来说，当承托板的厚度不均匀时， 厚度较小的区域更容易被弯曲，相应的，厚度较大的区域更不容易被弯曲。
在另一种实现方式中，第一固定部、第一连接部、第二连接部和第二固定部的材料密度可以大于第一弯折部、主弯折部和第二弯折部的材料密度。具体来说，当承托板整体采用同一种材料制成，且在不同区域中，单位体积内材料的重量不同时；单位体积内材料的重量较小(即材料密度较小)的区域更容易被弯曲。相应的，单位体积内材料的重量较大(即材料密度较大)的区域更不容易被弯曲。
在另一种实现方式中，可以在第一弯折部、主弯折部和第二弯折部中可以设置通孔。以第一弯折部为例，在第一弯折部设置贯穿承托板的上、下板面的通孔后，会降低该区域的刚性，当承托板被弯曲时，设置有通孔的区域更容易产生弯曲形变。相应的，在主弯折部和第二弯折部设置通孔，同样能够降低该设置通孔区域的刚性。
为了使得第一弯折部、主弯折部和第二弯折部能够被更好的弯曲，在第二方向上，多个通孔可以由承托板的一个边缘排列至另一个边缘。其中，第二方向平行于承托板的板面，且垂直于第一方向。
另外，为了使得第一弯折部、主弯折部和第二弯折部能够具备一定大小的弯曲区域。沿第一方向，可以在第一弯折部设置多列该通孔。相应的，沿第一方向，可以在主弯折部设置多列该通孔、沿第一方向，可以在第二弯折部设置多列该通孔。在具体配置时，相邻的两列通孔可以交错设置，以保证第一弯折部、主弯折部和第二弯折部具备较强的受力性能和耐疲劳度。
另外，考虑到在实际使用时，主弯折部的弯折角度可能会比较大，因此，主弯折部的区域可以大于第一弯折部和第二弯折部的区域。具体来说，在主弯折部，可以设置更多列通孔；在第一弯折部可以设置较少列通孔，在第二弯折部也可以设置较少列通孔。其中，第一弯折部和第二弯折部所设置通孔的列数可以相同也可以不同。另外，第一连接部和第二连接部可以关于主弯折部对称设置也可以非对称设置。或者，可以理解的是，在第一方向上，第一连接部的长度与第二连接部可以相同也可以不同。相应的，第一弯折部和第二弯折部可以关于主弯折部对称设置也可以非对称设置。或者，可以理解的是，在第一方向上，第一弯折部所设置的通孔的列数与第二弯折部所设置的通孔的列数可以相同也可以不同。相应的，第一固定部和第二固定部可以关于主弯折部对称设置也可以非对称设置。或者，可以理解的是，在第一方向上，第一固定部的长度与第二固定部的长度可以相同也可以不同。
另外，在具体实施时，通孔的截面轮廓可以是圆形、椭圆形或其他的形状。
例如，通孔的截面轮廓为长条状。另外，为了提升第一弯折部、主弯折部和第二弯折部的可弯折性能，通孔的截面轮廓的长度方向平行于第二方向(或垂直于第一方向)。
在具体配置时，承托板可以通过粘结层贴合在柔性显示面板的背部。其中，粘结层具体可以是双面胶，也可以是包含有聚氨酯、聚乙烯、聚丙烯等材质的胶层。在具体实施时，承托板的形状轮廓、大小可以与柔性显示面板的形状轮廓、大小可以相同也可以不同。例如，承托板和柔性显示面板可以是相同大小的矩形结构。承托板的其中一个板面与柔性显示面板的背部完全贴合，以提升承托板和柔性显示面板之间的连接强度和弯曲形变时的一致性。
另一方面，本申请实施例还提供了一种可折叠设备，包括第一壳体、第二壳体、铰链和上述的柔性屏，第一壳体和第二壳体通过铰链进行连接，以实现可折叠设备的可折叠功 能。承托板的第一固定部与第一壳体固定连接，第二固定部与第二壳体固定连接。当第一壳体和第二壳体相对折叠或展开时，承托板(或柔性屏)也能够随之被折叠或展开。
在具体实施时，铰链的结构、弯折形态可以是多样的。或者，柔性屏也可以与铰链中的部分结构进行固定连接。
例如，铰链中可以包括主体和关于主体对称设置的第一折叠组件和第二折叠组件，第一折叠组件和第二折叠组件能够相对于主体相向或相背离转动，以实现铰链的折叠功能。第一折叠组件可以包括：第一摆动连杆、第一摆臂、第一从动臂和第一支撑板。第一摆臂的一端可以与主体转动连接，另一端可以与第一摆动连杆转动连接；第一从动臂的一端可以与主体转动连接，另一端可以与第一摆动连杆滑动连接；其中，第一从动臂和第一摆臂在主体上的旋转轴心相互平行且不重合，以使第一折叠组件相对于主体转动时能够产生长度变化。第二折叠组件可以包括：第二摆动连杆、第二摆臂、第二从动臂和第二支撑板。第二摆臂的一端可以与主体转动连接，另一端可以与第二摆动连杆转动连接；第二从动臂的一端可以与主体转动连接，另一端可以与第二摆动连杆滑动连接；其中，第二从动臂和第二摆臂在主体上的旋转轴心相互平行且不重合，以使第二折叠组件相对于主体转动时能够产生长度变化。
当铰链被折叠时，第一摆动连杆和第二摆动连杆相向转动，第一摆动连杆带动第一从动臂同步转动，且第一摆动连杆和第一摆臂相对第一从动臂伸展运动，第二摆动连杆带动第二从动臂同步转动，且第二摆动连杆和第二摆臂相对第二从动臂伸展运动，以增加铰链的长度；与第一支撑板滑动连接的第一摆臂或第一从动臂驱动第一支撑板相对第一摆动连杆正向转动(例如，当第一摆动连杆顺时针旋转时，第一支撑板相对于第一摆动连杆顺时针旋转)，与第二支撑板滑动连接的第二摆臂或第二从动臂驱动第二支撑板相对第二摆动连杆正向转动(例如，当第二摆动连杆逆时针旋转时，第二支撑板相对于第二摆动连杆逆时针旋转)，以使第一支撑板、第二支撑板和主体围成容纳空间。
当铰链被展开时，第一摆动连杆和第二摆动连杆相背离转动，第一摆动连杆带动第一从动臂同步转动，且第一摆动连杆和第一摆臂相对第一从动臂收缩运动，第二摆动连杆带动第二从动臂同步转动，且第二摆动连杆和第二摆臂相对第二从动臂收缩运动，以缩减铰链的长度；与第一支撑板滑动连接的第一摆臂或第一从动臂驱动第一支撑板相对第一摆动连杆正向转动(例如，当第一摆动连杆逆时针旋转时，第一支撑板相对于第一摆动连杆逆时针旋转)，与第二支撑板滑动连接的第二摆臂或第二从动臂驱动第二支撑板相对第二摆动连杆正向转动(例如，当第二摆动连杆顺时针旋转时，第二支撑板相对于第二摆动连杆顺时针旋转)，以使第一支撑板、第二支撑板和主体展平成支撑面。从而能够对柔性屏起到良好的支撑作用。
在本申请实施例提供的铰链中，当铰链被折叠时，其长度能够得到良好的伸展，同时，第一支撑板、主体和第二支撑板能够逐渐围成容纳空间；当铰链被展开时，其长度能够得到良好的缩短，同时第一支撑板、主体和第二支撑板能够逐渐展平成支撑面。另外，在此过程中，从外观上看铰链中不会出现明显缝隙，从而具备较好的遮蔽性，有利于提升铰链的整体性和安全性。承托板还可以与第一支撑板和第二支撑板固定连接。在具体实施时，承托板的第一连接部可以粘接在第一支撑板上，第二连接部可以粘接在第二支撑板上。在铰链的折叠、展开过程中，第一支撑板和第二支撑板可随着铰链的折叠状态产生旋转或滑动等姿态变化。相应的，第一连接部也可以随着第一支撑板产生对应的姿态变化。第二连 接部也可以随着第二支撑板产生对应的姿态变化。使得第一支撑板和第二支撑板能有效对承托板(或柔性屏)的形态进行较为有效的控制，从而有利于增加可折叠设备的使用效果和稳定性。
附图说明
图1为本申请实施例提供的一种可折叠设备的剖面结构示意图；
图2为本申请实施例提供的一种柔性屏处于展开状态时的结构示意图；
图3为本申请实施例提供的一种柔性屏处于折叠状态时的局部剖面结构示意图；
图4为本申请实施例提供的一种承托板的结构示意图；
图5为本申请实施例提供的一种可折叠设备的结构示意图；
图6为本申请实施例提供的一种铰链的结构示意图；
图7为本申请实施例提供的一种铰链的局部结构示意图；
图8为本申请实施例提供的一种铰链的局部结构示意图；
图9为本申请实施例提供的一种可折叠设备处于折叠状态时的局部剖面结构示意图；
图10为本申请实施例提供的一种铰链的剖面结构示意图；
图11为本申请实施例提供的一种铰链的局部结构示意图；
图12为本申请实施例提供的一种铰链的局部结构示意图；
图13为本申请实施例提供的一种铰链的部分结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。
为了方便理解本申请实施例提供的柔性屏，下面首先介绍一下其应用场景。
本申请实施例提供的柔性屏可以应用在可折叠手机、可折叠平板电脑、笔记本电脑、可折叠电子书等可折叠设备中。柔性屏具备一定的可弯折性，因此，在一些情况下可以将柔性屏进行折叠，在另一些情况下可以将柔性屏进行展开。例如，当可折叠设备被折叠后，柔性屏可以随之被折叠，从而可以降低可折叠设备的面积，以提升便携性。当可折叠设备被展开后，柔性屏可以随之被展开，从而可以提供较大的显示区域，以提升用户的使用便利性。
在一些可折叠设备中，将可折叠设备进行折叠后，并没有考虑到柔性屏中被折叠部分的姿态。另外，也没有设置相应的结构对柔性屏的折叠姿态进行有效控制，导致柔性屏中的被折叠部分出现较大隆起，从而会影响到可折叠设备的厚度和折叠后的整体姿态。
具体来说，如图1所示，可折叠设备可以包括通过铰链01连接的第一主体02和第二主体03，第一主体02可以通过铰链01相对第二主体03进行折叠，从而实现可折叠设备的折叠功能。柔性屏04的一部分与第一主体02固定连接，另一部分与第二主体03固定连接。柔性屏04具备一定的柔性，因此，当第一主体02和第二主体03通过铰链01进行折叠时，柔性屏04对应于铰链01的部分可以产生弯曲形变。在实际应用时，为了保证柔性屏04的安全性，柔性屏04中的被折叠部分(即产生弯曲形变的部分)的弯折半径R需要大于特定值，以防止出现折痕或裂纹等不良情况。为此，可折叠设备被折叠后，在铰链 01部分(或柔性屏04的被折叠部分)会形成较大的拱状隆起，从而会影响到可折叠设备的厚度。另外，第一主体02和第二主体03之间也会保持一定的夹角，而不能处于相互平行的状态，从而降低了可折叠设备的安全性。例如，当可折叠设备遭受外力挤压后，铰链01会承受较大的作用力，容易产生形变、失效等风险；另外，第一主体02和第二主体03之间的夹缝中容易存留异物，从而会对柔性屏04的安全性造成不良影响。
为此，本申请实施例提供了一种能够折叠姿态进行有效控制的柔性屏和应用该柔性屏的可折叠设备。
为了便于理解本申请技术方案，下面将结合附图和具体实施方式对本申请所提供的柔性屏进行具体说明。
以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“上述”、“该”和“这一”旨在也包括例如“一个或多个”这种表达形式，除非其上下文中明确地有相反指示。还应当理解，在本申请以下各实施例中，“至少一个”、“一个或多个”是指一个、两个或两个以上。术语“和/或”，用于描述关联对象的关联关系，表示可以存在三种关系；例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A、B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。
在本说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
如图2所示，在本申请提供的一个实施例中，柔性屏10包括柔性显示面板11(如OLED显示面板)和承托板12。柔性显示面板11的上表面为用于显示图像的显示面，下表面为背面。承托板12通过粘结层13设置在柔性显示面板11的背面，用于对柔性显示面板11提供一定的支撑作用。另外，为了能够对柔性屏10的折叠姿态进行有效控制，承托板12具有沿第一方向(图中由左到右的方向)依次设置的第一固定部121、第一弯折部122、第一连接部123、主弯折部124、第二连接部125、第二弯折部126和第二固定部127，其中，第一方向平行于承托板12的板面。请结合参阅图3，柔性屏10被折叠后，主弯折部124可以朝折叠方向进行弯曲(也可以理解为朝内弯曲)，第一弯折部122和第二弯折部126可以背离折叠方向进行弯曲(也可以理解为朝外弯曲)，从而能够对柔性屏10的折叠形态进行有效控制。在承托板12的作用下，当柔性屏10被展开后，能够提升柔性显示面板11的平面度，从而有效提升柔性显示面板11的显示效果。当柔性屏10被折叠后，承托板12能够通过自身的结构设置来控制柔性屏10的折叠姿态，从而能够提升用户的使用体验。
具体来说，如图2所示，承托板12可以是金属板、玻璃板或塑料板等具有一定刚性的板状结构。在承托板12中，第一弯折部122、第一连接部123、主弯折部124、第二连接部125和第二弯折部126共同构成柔性屏10的弯曲部120。第一固定部121、第一连接部123、第二连接部125和第二固定部127具有较大的刚性；第一弯折部122、主弯折部 124和第二弯折部126具有较好柔性。如图3所示，当柔性屏10被折叠后，刚性较大的第一固定部121、第一连接部123、第二连接部125和第二固定部127不易被弯曲可以保持平板结构，同时，柔性较大的第一弯折部122、主弯折部124和第二弯折部126较容易被弯曲。另外，由于主弯折部124可以朝折叠方向进行弯曲、第一弯折部122和第二弯折部126可以背离折叠方向进行弯曲，从而会降低柔性屏10的弯曲部所围成轮廓A的大小。
在具体实施时，当柔性屏10被展开后，可以形成平直的板状结构。即柔性显示面板11用于显示图像的表面可以具备较好的平面度，以提供良好的显示效果和视觉体验。另外，当柔性屏10被折叠后，第一固定部121和第二固定部127可以处于相互平行的状态，从而尽可能的降低柔性屏10所占用的体积大小；另外，还能有效降低柔性屏10所围成轮廓A的大小，从而还有助于提升柔性屏10的安全性。
另外，为了使得第一弯折部122、主弯折部124和第二弯折部126相较于第一固定部121、第一连接部123、第二连接部125和第二固定部127具有较大的柔性。
在一种实现方式中，第一固定部121、第一连接部123、第二连接部125和第二固定部127的厚度可以大于第一弯折部122、主弯折部124和第二弯折部126的厚度。具体来说，当承托板12的厚度不均匀时，厚度较小的区域更容易被弯曲，相应的，厚度较大的区域更不容易被弯曲。因此，通过以上结构设置，使得当承托板12(或柔性屏10)被折叠时，厚度较小的第一弯折部122、主弯折部124和第二弯折部126更容易被弯曲，因此，能够对柔性屏10的折叠形态进行有效控制。在具体配置时，第一固定部121、第一连接部123、第二连接部125和第二固定部127的厚度可以相同也可以不同。另外，第一弯折部122、主弯折部124和第二弯折部126的厚度可以相同也可以不同，本申请对此不作具体限定。
另外，在另一种实现方式中，第一固定部121、第一连接部123、第二连接部125和第二固定部127的材料密度可以大于第一弯折部122、主弯折部124和第二弯折部126的材料密度。具体来说，当承托板12整体采用同一种材料制成，且在不同区域中，单位体积内材料的重量不同时；单位体积内材料的重量较小(即材料密度较小)的区域更容易被弯曲。相应的，单位体积内材料的重量较大(即材料密度较大)的区域更不容易被弯曲。因此，通过以上结构设置，使得当承托板12(或柔性屏10)被折叠时，材料密度较小的第一弯折部122、主弯折部124和第二弯折部126更容易被弯曲，因此，能够对柔性屏10的折叠形态进行有效控制。在具体配置时，第一固定部121、第一连接部123、第二连接部125和第二固定部127的材料密度可以相同也可以不同。另外，第一弯折部122、主弯折部124和第二弯折部126的材料密度可以相同也可以不同，本申请对此不作具体限定。
另外，如图4所示，在另一种实现方式中，可以在第一弯折部122、主弯折部124和第二弯折部126中可以设置通孔128。以第一弯折部122为例，在第一弯折部122设置贯穿承托板12的上、下板面的通孔128后，会降低该区域的刚性，当承托板12被弯曲时，设置有通孔128的区域更容易产生弯曲形变。相应的，在主弯折部124和第二弯折部126设置通孔128，同样能够降低该设置通孔128区域的刚性。因此，通过以上结构设置，使得当承托板12(或柔性屏10)被折叠时，设置有通孔128的第一弯折部122、主弯折部124和第二弯折部126更容易被弯曲，因此，能够对柔性屏10的折叠形态进行有效控制。在具体配置时，在第一弯折部122、主弯折部124和第二弯折部126中所设置的通孔128的大小、截面轮廓、数量、位置排布等参数可以相同也可以不同。
例如，以第一弯折部122为例。为了使得第一弯折部122能够被更好的弯曲，第一弯折部122设有多个通孔，且在第二方向上(图中由上到下的方向)，多个通孔128由承托板12的一个边缘(图中的上边缘)排列至另一个边沿(图中的下边缘)。另外，为了使得第一弯折部122能够具备一定大小的弯曲区域，沿第一方向(图中由左到右的方向)，设有多列该通孔128。在具体配置时，相邻两列的通孔128可以交错设置，以保证第一弯折部122的受力性能和耐疲劳度。相应的，在主弯折部124和第二弯折部126中，通孔128的位置排布也可以依照上述第一弯折部122中通孔128的位置排布进行设置。另外，考虑到在实际使用时，主弯折部124的弯折角度可能会比较大，因此，主弯折部124的区域可以大于第一弯折部122和第二弯折部126的区域。具体来说，在主弯折部124，可以设置更多列(图中示出有13列)通孔128；在第一弯折部122可以设置较少列(图中示出有4列)通孔128，在第二弯折部126也可以设置较少列(图中示出有4列)通孔128。其中，第一弯折部122和第二弯折部126所设置通孔128的列数可以相同也可以不同。另外，第一连接部123和第二连接部125可以关于主弯折部124对称设置也可以非对称设置。或者，可以理解的是，在第一方向上，第一连接部123的长度与第二连接部125可以相同也可以不同。相应的，第一弯折部122和第二弯折部126可以关于主弯折部124对称设置也可以非对称设置。或者，可以理解的是，在第一方向上，第一弯折部122所设置的通孔128的列数与第二弯折部126所设置的通孔128的列数可以相同也可以不同。相应的，第一固定部121和第二固定部127可以关于主弯折部124对称设置也可以非对称设置。或者，可以理解的是，在第一方向上，第一固定部121的长度与第二固定部127的长度可以相同也可以不同。
另外，在具体实施时，通孔128的截面轮廓可以是圆形、椭圆形或其他的形状。例如，在本申请提供的实施例中，通孔128的截面轮廓为长条状。另外，为了提升第一弯折部122、主弯折部124和第二弯折部126的可弯折性能，通孔128的截面轮廓的长度方向平行于第二方向(或垂直于第一方向)。
在具体配置时，如图3所示，承托板12可以通过粘结层13贴合在柔性显示面板11的背部。其中，粘结层13具体可以是双面胶，也可以是包含有聚氨酯、聚乙烯、聚丙烯等材质的胶层。在具体实施时，承托板12的形状轮廓、大小可以与柔性显示面板11的形状轮廓、大小可以相同也可以不同。例如，在本申请提供的一个实施例中，承托板12和柔性显示面板11是相同大小的矩形结构。承托板12的其中一个板面与柔性显示面板11的背部完全贴合，以提升承托板12和柔性显示面板11之间的连接强度和弯曲形变时的一致性。
另外，如图5所示，本申请实施例还提供了一种可折叠设备30，包括第一壳体31、第二壳体32、铰链20和上述的柔性屏(图中柔性屏只示出了承托板12的结构)，第一壳体31和第二壳体32通过铰链20进行连接，以实现可折叠设备30的可折叠功能。承托板12的第一固定部121与第一壳体31固定连接，第二固定部127与第二壳体32固定连接。当第一壳体31和第二壳体32相对折叠或展开时，承托板12(或柔性屏)也能够随之被折叠或展开。
在具体实施时，承托板12的第一固定部121与第一壳体31固定连接具体可以是，第一固定部121可以通过粘结材料(如双面胶、聚氨酯、聚乙烯、聚丙烯等)固定贴合于第一壳体31。承托板12的第二固定部127与第二壳体32固定连接具体可以是，第二固定部 127可以通过粘结材料(如双面胶、聚氨酯、聚乙烯、聚丙烯等)固定贴合于第二壳体32。在另一些实施方式中，第一固定部121还可以采用焊接等方式与第一壳体31固定连接，第二固定部127也可以采用焊接等方式与第二壳体32固定连接。本申请对此不作具体限定。
在具体实施时，铰链20的结构、弯折形态可以是多样的。或者，柔性屏也可以与铰链20中的部分结构进行固定连接。
例如，如图6所示，本申请实施例提供了一种铰链20(其中铰链20的具体结构和运动原理可参照中国申请号为：201911286336.8、发明名称为“一种铰链和移动终端”的专利文件，因此，下述仅作简要说明)。概括来说，铰链20包括主体21和关于主体21对称设置的第一折叠组件22和第二折叠组件23，第一折叠组件22和第二折叠组件23能够相对于主体21相向或相背离转动，以实现铰链20的折叠功能。
如图7所示，第一折叠组件22可以包括：第一摆动连杆221、第一摆臂222(图中示出有两个)、第一从动臂223(图中示出有两个)和第一支撑板224(图7中未示出)。第一摆臂222的一端(图中的右端)与主体21转动连接，另一端(图中的左端)与第一摆动连杆221转动连接；第一从动臂223的一端(图中的右端)与主体21转动连接，另一端(图中的左端)与第一摆动连杆221滑动连接；其中，第一从动臂223和第一摆臂222在主体21上的旋转轴心相互平行且不重合，以使第一折叠组件22相对于主体21转动时能够产生长度变化。
第一支撑板224与第一摆动连杆221转动连接，且与第一从动臂223滑动连接；当第一折叠组件22相对于主体21转动时，第一支撑板224能够在第一从动臂223的驱动力下相对于第一摆动连杆221转动。
如图8所示，第二折叠组件23可以包括第二摆动连杆231、第二摆臂232(图中示出有两个)、第二从动臂233(图中示出有两个)和第二支撑板234(图8中未示出)。第二摆臂232的一端(图中的左端)与主体21转动连接，另一端(图中的右端)与第二摆动连杆231转动连接；第二从动臂233的一端(图中的左端)与主体21转动连接，另一端(图中的右端)与第二摆动连杆231滑动连接；其中，第二从动臂233和第二摆臂232在主体21上的旋转轴心相互平行且不重合，以使第二折叠组件23相对于主体21转动时能够产生长度变化。
第二支撑板234与第二摆动连杆131转动连接，且与第二从动臂233滑动连接；当第二折叠组件23相对于主体21转动时，第二支撑板234能够在第二从动臂233的驱动力下相对于第二摆动连杆231转动。
请结合参阅图9，铰链20被折叠的过程中，由于第一摆动连杆121会相对于第一从动臂123向外滑动，因此，第一从动臂123会驱动第一支撑板124相对于第一摆动连杆121顺时针旋转，以使第一支撑板124与主体21之间逐渐形成用于容纳柔性屏(的弯曲部分)的容纳空间。
可以理解的是，第一折叠组件22和第二折叠组件23可以相对于主体21对称设置，第二折叠组件23的基本结构组成和运动原理可以与第一折叠组件22相同，因此，第二折叠组件23的结构组成和运动原理可参照上述对于第一折叠组件22的描述，在此不作赘述。
下面将对第一折叠组件22中各组成部件之间的连接结构以及与主体21之间的连接结构作具体说明；第二折叠组件23中各组成部件之间的连接结构可参照对于第一折叠组件 22的描述。
如图10所示，在本申请提供的一个实施例中，第一摆臂222和主体21之间实现转动连接的具体方式可以为虚拟轴式。
具体来说，主体21可以包括相互扣合的外壳212和内壳211，外壳212中可以设置圆弧形凹陷部212a，内壳211中可以设置圆弧形凸起211a；外壳212和内壳211扣合固定后，圆弧形凹陷部212a和圆弧形凸起211a扣合形成圆弧形的第一圆弧槽213，也可以理解为圆弧形凹陷部212a和圆弧形凸起211a之间形成圆弧形的缝隙。第一摆臂222的一端设有第一圆弧轴2221，将第一圆弧轴2221装配在第一圆弧槽213内，便可实现第一摆臂222和主体21之间的转动连接。通过虚拟轴式的连接方式，可以将第一摆臂222和主体21之间的连接结构良好的隐藏在主体21内，从而有利于提升铰链20的一体性和使用体验。
在具体实施时，第一圆弧槽213可以为四分之一圆弧、三分之一圆弧等，第一圆弧轴2221可以是四分之一圆弧、三分之一圆弧等，本领域技术人员可根据实际需求对第一圆弧槽213和第一圆弧轴2221的具体参数作适应调整，本申请对此不作具体限定。
第二摆臂232和主体21之间实现转动连接的具体方式也可以为虚拟轴式。简单来说，外壳212中可以设置圆弧形凹陷部212b，内壳211中可以设置圆弧形凸起211b；外壳212和内壳211扣合固定后，圆弧形凹陷部212b和圆弧形凸起211b扣合形成圆弧形的第二圆弧槽214，也可以理解为圆弧形凹陷部212b和圆弧形凸起211b之间形成圆弧形的缝隙。第二摆臂232的一端设有第二圆弧轴2321，将第二圆弧轴2321装配在第二圆弧槽214内，便可实现第二摆臂232和主体21之间的转动连接。通过虚拟轴式的连接方式，可以将第二摆臂232和主体21之间的连接结构良好的隐藏在主体21内，从而有利于提升铰链20的一体性和使用体验。
另外，在一些实施方式中，第一摆臂222和主体21之间也可以采用销轴或者其他的方式实现转动连接。
例如，在本申请提供的一个实施例中，第一摆臂222和第一摆动连杆121之间实现转动连接的具体方式可以为销轴式。
具体来说，第一摆臂222的一端(图中图的左端)设有第一轴孔(图中未标示出)，第一摆动连杆221的一端(图中的右端)设有第二轴孔(图中未标示出)；销轴241穿设在第一轴孔和第二轴孔内，以实现第一摆臂222和第一摆动连杆221之间的转动连接。
第二摆臂232和第二摆动连杆231之间实现转动连接的具体方式可以为销轴式。
具体来说，第二摆臂232的一端(图中图的右端)可以设有第三轴孔(图中未标示出)，第二摆动连杆231的一端(图中的左端)设有第四轴孔(图中未标示出)；销轴242穿设在第三轴孔和第四轴孔内，以实现第二摆臂232和第二摆动连杆231之间的转动连接。
在一些实施方式中，第一摆臂222与第一摆动连杆221之间也可以采用上述的虚拟轴式的连接方式实现转动连接，或者采用其他的方式实现转动连接，第二摆臂232与第二摆动连杆231之间也可以采用上述的虚拟轴式的连接方式实现转动连接，或者采用其他的方式实现转动连接，本申请对此不作具体限定。
在具体实施时，第一从动臂223与主体21之间可以采用上述的虚拟轴式、销轴式的连接方式实现转动连接，也可以采用其他的方式实现转动连接。
例如，请结合参阅图7，在本申请提供的实施例中，第一从动臂223和主体21之间采用销轴式的连接方式实现转动连接。具体来说，第一从动臂223的一端(图中的右端)设 有轴孔(图中未示出)，固定在主体21内的销轴243穿设在第一从动臂223的轴孔内，以实现第一从动臂223和主体21之间的转动连接。
另外，如图11和图12所示，为了实现第一从动臂223和第一摆动连杆221之间的滑动连接。在本申请提供的实施例中，第一摆动连杆221中可以设有第一滑槽2212，第一从动臂223上可以设有第一滑轨2231，第一滑轨2231可滑动的设置在第一滑槽2212内，以实现第一从动臂223和第一摆动连杆221之间的滑动连接。
在具体实施时，第一滑槽2212也可以设置在第一从动臂223上，第一滑轨2231也可以设置在第一摆动连杆221上。另外，第一滑槽2212和第一滑轨2231的形状可以是多样的；例如，在本申请提供的实施例中，第一滑槽2212和第一滑轨2231的截面为十字形。在其他实施方式中，第一滑槽2212和第一滑轨2231的截面形状也可以为梯形、三角形等，本申请在此不作赘述。
另外，为了实现第二从动臂233和第二摆动连杆231之间的滑动连接。在本申请提供的实施例中，第二摆动连杆231中可以设有第二滑槽2312，第二从动臂(图中未示出)上可以设有第二滑轨(图中未示出)，第二滑轨可滑动的设置在第二滑槽2312内，以实现第二从动臂和第二摆动连杆231之间的滑动连接。
在具体实施时，第二滑槽2312也可以设置在第二从动臂上，第二滑轨也可以设置在第二摆动连杆231上。另外，第二滑槽2312和第二滑轨的形状可以是多样的；例如，在本申请提供的实施例中，第二滑槽2312和第二滑轨的截面为十字形。在其他实施方式中，第二滑槽2312和第二滑轨的截面形状也可以为梯形、三角形等，本申请在此不作赘述。
另外，具体实施时，第一支撑板224与第一摆动连杆221之间也可以采用上述的虚拟轴式的连接方式实现转动连接，也可以采用销轴式的连接方式实现转动连接，或者采用其他的连接方式实现转动连接。
例如，如图12所示，在本申请提供的一个实施例中，第一支撑板224和第一摆动连杆221采用虚拟轴式的连接方式实现转动连接。具体来说，第一摆动连杆221上设有第三圆弧槽2213，第一支撑板224上设有与第三圆弧槽2213相吻合的第三圆弧轴2241，第三圆弧轴2241设置在第三圆弧槽2213内，以实现第一支撑板224和第一摆动连杆221之间的转动连接。
通过虚拟轴式的连接方式，可以对第三圆弧槽2213和第三圆弧轴2241进行良好的隐藏，防止外露，从而能够增加铰链20观感上的整体性。
在一些实施方式中，第一支撑板224和第一摆动连杆221之间也可以采用销轴式的连接方式实现转动连接，或者采用其他的连接方式实现转动连接，本申请对此不作具体限定。
在具体实施时，第二支撑板234和第二摆动连杆231也可以采用上述的虚拟轴式的连接方式实现转动连接。简单来说，第二摆动连杆231上可以设有与上述第三圆弧槽2213相同的结构，第二支撑板234上也可以设有与上述第三圆弧轴2241相同的结构，以实现第二支撑板234和第二摆动连杆231之间的转动连接。
铰链20在折叠过程中，为了使得第一支撑板224能够相对第一摆动连杆221转动，在本申请提供的一个实施例中，第一支撑板224与第一从动臂223滑动连接。
具体来说，如图12所示，第一支撑板224上设有第三滑槽2242，第一从动臂223上设有定位轴251，定位轴251可滑动的设置在第三滑槽2242内，当第一从动臂223和第一摆动连杆221之间产生相对滑动时，位于第一从动臂223上的定位轴251会抵推第三滑槽 2242的侧壁，使第一支撑板224绕第一摆动连杆221转动。
在具体实施时，第三滑槽2242可以是弧形槽、直线形槽、不规则曲线形槽等；在实际应用时，可以根据第一支撑板224的目标运动轨迹来调整第三滑槽2242的形状。
例如，请结合参阅图11，在本申请提供的实施例中，对铰链20进行折叠后，为了使得第一支撑板224、第二支撑板234与主体21(内壳211)之间能够围成容纳空间，第一支撑板224与第一摆动连杆221的左端转动连接(第三圆弧槽2213靠近第一摆动连杆221的左端设置)。在对铰链20进行折叠时，第一摆动连杆221沿顺时针方向转动，且沿第一从动臂223向外滑动，与此同时，定位轴241抵推第三滑槽2242的侧壁，并在第三滑槽2242内滑动，以使第一支撑板224相对于第一摆动连杆221沿顺时针方向旋转，从而能够在第一支撑板224和主体21(内壳211)之间逐渐形成容纳空间。另外，对铰链20进行展开时，第一摆动连杆221沿逆时针方向转动，且沿第一从动臂223向内滑动，与此同时，定位轴241抵推第三滑槽2242的侧壁，并在第三滑槽2242内滑动，以使第一支撑板224相对于第一摆动连杆221沿逆时针方向旋转，当铰链20被完全展开时，第一支撑板224的上表面与主体21(内壳211)的上表面平齐，从而可以为柔性屏提供平整的支撑面。
如图12所示，在具体实施时，第二折叠组件23的结构组成可以与第一折叠组件22的结构组成相同，且关于主体21对称设置；简单来说，第二支撑板234上可以设有第四滑槽2342，第二从动臂233上可以设有定位轴252，定位轴252可滑动的设置在第四滑槽2342内，当第二从动臂233和第二摆动连杆231之间产生相对滑动时，位于第二从动臂233上的定位轴252会抵推第四滑槽2342的侧壁，使第二支撑板234绕第二摆动连杆231转动。第二折叠组件23的运作原理可参照上述对于第一折叠组件22的相关描述，在此不作赘述。
另外，为了保证铰链20在折叠、展开过程中，第一折叠组件22和第二折叠组件23能够同步动作，在本申请提供的一个实施例中，铰链20中还可以包括同步组件，以实现第一折叠组件22和第二折叠组件23之间的同步反向转动(同步相向转动和同步背离转动)。
在具体实施时，同步组件的结构形式、与第一折叠组件22和第二折叠组件23之间的连接关系可以是多样的。
例如，如图13所示，在本申请提供的一个实施例中，同步组件可以包括齿轮结构，且与第一从动臂223和第二从动臂233传动连接。
具体来说，同步组件中包括相啮合的第一齿轮261和第二齿轮262，第一齿轮261固定在第一从动臂223一端(在一些实施方式中也可以在第一从动臂223的右端直接成型出齿轮结构)，第二齿轮262固定在第二从动臂233的一端(在一些实施方式中也可以在第二从动臂233的左端直接成型出齿轮结构)，第一齿轮261的轴心与第一从动臂223在主体21上的旋转轴心重合，第二齿轮262的轴心于第二从动臂233在主体21上的旋转轴心重合。第一齿轮261和第二齿轮262之间设有相啮合的从动齿轮263和从动齿轮264，从动齿轮263与第一齿轮261相啮合，从动齿轮164和第二齿轮162相啮合；即第一从动臂223和第二从动臂233之间通过第一齿轮261、第二齿轮262、从动齿轮263和从动齿轮264实现同步转动。
如图5所示，在具体实施时，承托板12的第一固定部121可以粘接在第一壳体21上，承托板12的第二固定部127可以粘接在第二壳体22上。由于在铰链20的折叠、展开过程中，其自身长度可以随着折叠角度的变化而伸长或缩短。因此，在可折叠设备30的折 叠、展开过程中，第一壳体21、铰链20和第二壳体22之间的连接长度会伸长或缩短，从而不会对承托板12(或柔性屏)造成挤压力和拉伸力。具体来说，当可折叠设备30被逐渐展开时，铰链20的长度会逐渐缩短，当可折叠设备30被完全展开(第一壳体21与第二壳体22之间的夹角为180°)后，铰链20的长度与承托板12中的弯曲部120的长度相同，同时，第一支撑板224、内壳211和第二支撑板234会形成平整的支撑面，从而能够对承托板12(或柔性屏)提供良好的支撑作用。
如图9所示，当可折叠设备30被逐渐折叠后，铰链20的长度会逐渐伸长，从而保证不会对承托板12的弯曲部120产生压缩的作用力，同时，第一支撑板224、内壳211和第二支撑板234会逐渐围成用于容纳弯曲部120的容纳空间(容纳空间的截面可以类似于水滴状)，防止弯曲部120出现较大角度弯折，以避免折痕等不良现象的产生。
在一些实施方式中，承托板12还可以与第一支撑板224和第二支撑板234固定连接。在具体实施时，承托板12的第一连接部123可以粘接在第一支撑板224上，第二连接部125可以粘接在第二支撑板234上。由于在铰链20的折叠、展开过程中，第一支撑板224和第二支撑板234的不会对弯曲部120产生拉伸、压缩等不良影响，同时，还能有效对承托板12(或柔性屏)的形态进行较为有效的控制，从而有利于增加可折叠设备30的使用效果和稳定性。
可以理解的是，当可折叠设备30采用其他类型的铰链时，本申请提供的柔性屏10仍可以与可折叠设备30进行良好的匹配。
以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (14)

  1. 一种柔性屏，其特征在于，包括：
    柔性显示面板，具有显示面和背面；
    承托板，设置在所述柔性显示面板的背面；
    所述承托板具有沿第一方向依次设置的第一固定部、第一弯折部、第一连接部、主弯折部、第二连接部、第二弯折部和第二固定部，其中，所述第一方向平行于所述承托板的板面；
    所述柔性屏被折叠后，所述主弯折部朝折叠方向弯曲，所述第一弯折部和所述第二弯折部背离折叠方向弯曲。
  2. 根据权利要求1所述的柔性屏，其特征在于，所述第一固定部、所述第一连接部、所述第二连接部和所述第二固定部的厚度大于所述第一弯折部、所述主弯折部和所述第二弯折部的厚度。
  3. 根据权利要求1所述的柔性屏，其特征在于，所述第一固定部、所述第一连接部、所述第二连接部和所述第二固定部的材料密度大于所述第一弯折部、所述主弯折部和所述第二弯折部的材料密度。
  4. 根据权利要求1所述的柔性屏，其特征在于，所述第一弯折部、所述第二弯折部和所述第三弯折部均设有通孔，所述通孔贯穿所述承托板的两个板面。
  5. 根据权利要求3所述的柔性屏，其特征在于，在第二方向上，多个通孔由所述承托板的一个边缘排列至另一个边缘；
    其中，所述第二方向平行于所述承托板的板面，且垂直于所述第一方向。
  6. 根据权利要求4所述的柔性屏，其特征在于，在所述第一弯折部、所述第二弯折部和所述第三弯折部，沿所述第一方向分别设有多列所述通孔。
  7. 根据权利要求4至6中任意一项所述的柔性屏，其特征在于，所述通孔的截面呈长条状；
    所述通孔的截面轮廓的长度方向垂直于所述第一方向。
  8. 根据权利要求1至7中任意一项所述的柔性屏，其特征在于，所述第一连接部和所述第二连接部关于所述主弯折部对称设置。
  9. 根据权利要求8所述的柔性屏，其特征在于，所述第一弯折部和所述第二弯折部关于所述主弯折部对称设置。
  10. 根据权利要求1至9中任意一项所述的柔性屏，其特征在于，所述柔性屏被折叠后，所述第一固定部和所述第二固定部相互平行。
  11. 根据权利要求1至10中任意一项所述的柔性屏，其特征在于，所述承托板通过粘结层贴合在所述柔性显示面板的背面；
    其中，所述粘结层至少用于粘接所述第一固定部和所述柔性显示面板、所述第一连接部和所述柔性显示面板、所述第二连接部和所述柔性显示面板、所述第二固定部和所述柔性显示面板。
  12. 一种可折叠设备，其特征在于，包括第一壳体、第二壳体和铰链，所述第一壳体和所述第二壳体通过所述铰链连接；
    还包括如权利要求1至11中任意一项所述的柔性屏，所述第一固定部与所述第一壳体 固定连接，所述第二固定部与所述第二壳体固定连接。
  13. 根据权利要求12所述的可折叠设备，其特征在于，所述铰链包括主体、关于所述主体对称设置的第一折叠组件和第二折叠组件；
    所述第一折叠组件包括：
    第一摆动连杆；
    第一摆臂，一端与所述主体转动连接，另一端与所述第一摆动连杆转动连接；
    第一从动臂，一端与所述主体转动连接，另一端与所述第一摆动连杆滑动连接；
    第一支撑板，与所述第一摆动连杆转动连接，且与所述第一摆臂或所述第一从动臂滑动连接；
    其中，所述第一从动臂和所述第一摆臂在所述主体上的旋转轴心相互平行且不重合；
    所述第二折叠组件包括：
    第二摆动连杆；
    第二摆臂，一端与所述主体转动连接，另一端与所述第二摆动连杆转动连接；
    第二从动臂，一端与所述主体转动连接，另一端与所述第二摆动连杆滑动连接；
    第二支撑板，与所述第二摆动连杆转动连接，且与所述第二摆臂或所述第二从动臂滑动连接；
    其中，所述第二从动臂和所述第二摆臂在所述主体上的旋转轴心相互平行且不重合；
    所述第一摆动连杆和所述第二摆动连杆相向转动时，所述第一摆动连杆带动所述第一从动臂同步转动，且所述第一摆动连杆和所述第一摆臂相对所述第一从动臂伸展运动，所述第二摆动连杆带动所述第二从动臂同步转动，且所述第二摆动连杆和所述第二摆臂相对所述第二从动臂伸展运动，以增加所述铰链的长度；与所述第一支撑板滑动连接的所述第一摆臂或所述第一从动臂驱动所述第一支撑板相对所述第一摆动连杆正向转动，与所述第二支撑板滑动连接的所述第二摆臂或所述第二从动臂驱动所述第二支撑板相对所述第二摆动连杆正向转动，以使所述第一支撑板、所述第二支撑板和所述主体围成容纳空间；
    所述第一支撑板与所述第一连接部固定连接，所述第二支撑板与所述第二连接部固定连接。
  14. 根据权利要求13所述的可折叠设备，其特征在于，所述第一摆动连杆和所述第二摆动连杆相背离转动时，所述第一摆动连杆带动所述第一从动臂同步转动，且所述第一摆动连杆和所述第一摆臂相对所述第一从动臂收缩运动，所述第二摆动连杆带动所述第二从动臂同步转动，且所述第二摆动连杆和所述第二摆臂相对所述第二从动臂收缩运动，以缩减所述铰链的长度；与所述第一支撑板滑动连接的所述第一摆臂或所述第一从动臂驱动所述第一支撑板相对所述第一摆动连杆正向转动，与所述第二支撑板滑动连接的所述第二摆臂或所述第二从动臂驱动所述第二支撑板相对所述第二摆动连杆正向转动，以使所述第一支撑板、所述第二支撑板和所述主体展平成支撑面。
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