WO2023030140A1 - 电子设备、屏幕承托板及柔性屏幕组件 - Google Patents

电子设备、屏幕承托板及柔性屏幕组件 Download PDF

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Publication number
WO2023030140A1
WO2023030140A1 PCT/CN2022/114607 CN2022114607W WO2023030140A1 WO 2023030140 A1 WO2023030140 A1 WO 2023030140A1 CN 2022114607 W CN2022114607 W CN 2022114607W WO 2023030140 A1 WO2023030140 A1 WO 2023030140A1
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WO
WIPO (PCT)
Prior art keywords
support plate
subsection
subregion
partition
electronic device
Prior art date
Application number
PCT/CN2022/114607
Other languages
English (en)
French (fr)
Inventor
于卫东
毛维华
吴博
盛建清
黄波
代晓涛
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.)
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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 EP22863278.2A priority Critical patent/EP4372726A1/en
Publication of WO2023030140A1 publication Critical patent/WO2023030140A1/zh

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    • 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
    • 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
    • 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
    • H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
    • H04M1/185—Improving the rigidity of the casing or resistance to shocks

Definitions

  • the present application relates to the field of terminals, in particular to an electronic device, a screen supporting board and a flexible screen assembly.
  • the folded flexible screen component In the inner folding device, in order to weaken the creases of the flexible display panel, the folded flexible screen component forms a specific shape. In order to form the above-mentioned specific shape in the inner folding device, a support plate is usually required to support the flexible screen assembly.
  • the flexible screen assembly includes a flexible display panel and a screen support plate on its back.
  • both the flexible display panel and the screen support plate need to have good flexibility.
  • the flatness of the flexible screen assembly also requires a certain rigidity of the screen support plate.
  • the present application provides a screen support plate with good flexibility and rigidity, electronic equipment and a flexible screen assembly.
  • the electronic device specifically includes a foldable screen supporting board, a flexible display panel and a supporting board, and the supporting board includes a first supporting board, a second supporting board and a third supporting board.
  • the screen supporting board is sandwiched between the flexible display panel and the supporting board, and the respective planes of the screen supporting board, the flexible display panel and the supporting board are parallel to each other.
  • the screen support plate is provided with a reinforced area whose rigidity is greater than that of the surrounding partitions at the relative position of the gap between two adjacent support plates.
  • the reinforced area is located above at least part of the gap and overlaps the support plates on both sides of the part of the gap superior.
  • an electronic device in the first aspect of the present application, includes a foldable screen supporting board, a flexible display panel and a supporting board, and the supporting board includes a first supporting board, a second supporting board and a third supporting board ;
  • the screen support plate is arranged between the flexible display panel and the support plate; when the electronic device is in a flattened state, the first support plate, the second support plate and the third support plate are set in the first direction in sequence; the screen support The plate includes a first subsection, a second subsection, a third subsection, a fourth subsection and a fifth subsection sequentially arranged along the first direction, wherein the rigidity of the first subsection and the fifth subsection is greater than that of the first subsection.
  • the stiffness of the second subsection, the third subsection and the fourth subsection; the third subsection includes the first subsection, the second subsection, the third subsection, the fourth subsection and the fifth subsection arranged in sequence along the first direction, wherein , the rigidity of the first division, the third division and the fifth division is less than the stiffness of the second division and the fourth division;
  • the third subsection and the fourth subsection are in a bent state; the first support plate, the second support plate and the third support plate surround and form an accommodation space, at least part of the screen supporting board and at least part of the flexible display panel In the accommodation space; when the electronic device is in the flattened state, the orthographic projection of the first support plate, the second support plate, and the first gap between the first support plate and the second support plate on the surface of the screen support plate Respectively at least partially located in the area where the second partition is located, the orthographic projections of the second support plate, the third support plate, and the second gap between the second support plate and the third support plate on the board surface of the screen support plate are at least Partly located in the area
  • stiffness refers to the ability of a material or structure to resist elastic deformation when a force is applied. Stiffness characterizes the ease of elastic deformation of a material or structure. The stiffness of a material is usually measured by the modulus of elasticity. In the macro-elastic range, stiffness is a proportionality factor proportional to the part load and displacement, that is, the force required to cause a unit displacement. The higher the stiffness, the higher the ability of the material or structure to resist elastic deformation, that is, the less likely the material or structure is to deform; the lower the stiffness, the lower the ability of the material or structure to resist elastic deformation, that is, the material or structure The easier it is to deform.
  • the stiffness of a subsection can be understood as the average stiffness of the entire subsection, and similarly, the stiffness of a partition can be understood as the average stiffness of the entire subsection. Stiffness is related to material or structure material, solid volume and specific structural form.
  • the board surface of the screen supporting board refers to the surface of the screen supporting board parallel to the light-emitting surface of the flexible display screen.
  • the surface of the screen support plate is a surface parallel to the light-emitting surface of the flexible display screen on the screen support plate, and the surface is a plane. It can be understood that the plane in this application refers to a plane with a flatness within a certain range, not necessarily an absolutely flat surface.
  • the orthographic projection of the first support plate on the surface of the screen support plate at least partially overlaps with the area where the second partition is located, that is, the first support
  • the orthographic projection of the panel on the panel surface of the screen support panel at least partially overlaps the area where the second partition is located.
  • the orthographic projection of the second supporting plate on the surface of the screen supporting plate overlaps at least partially with the area where the second partition is located, that is, the orthographic projection of the second supporting plate on the surface of the screen supporting plate at least partially overlaps with the first The areas where the two partitions are located overlap.
  • the orthographic projection of the first gap on the surface of the screen supporting plate overlaps at least partially the area where the second partition is located, that is, the orthographic projection of the first gap on the surface of the screen supporting plate at least partially overlaps with the second partition
  • the second support plate, the third support plate, and the second gap between the second support plate and the third support plate have a similar relative positional relationship with the fourth partition.
  • a part of the second subregion overlaps the first support plate, another part of the second subregion overlaps the second support plate, and another part of the second subregion covers the first support plate.
  • a part of the fourth subregion overlaps the second support plate, another part of the fourth subregion overlaps the third support plate, and another part of the fourth subregion covers the second support plate and the third support plate on the second gap between.
  • a part of the second subregion overlaps at least a partial area on the first supporting plate, another part of the second subregion overlaps at least a partial area on the second supporting plate, and another part of the second subregion at least covers The partial area is set on the first gap between the first supporting board and the second supporting board.
  • a part of the fourth subregion overlaps at least a partial area on the second support plate, another part of the fourth subregion overlaps at least a partial area on the third support plate, and another part of the fourth subregion covers at least the A partial area on the second gap between the second support plate and the third support plate.
  • the foregoing description of the second partition is a description for each sub-partition.
  • the fourth partition includes two or more relatively separated sub-partitions, the above description of the fourth partition is the description for each sub-partition.
  • the above-mentioned screen support plate is provided with partitions with higher rigidity at the gaps between two adjacent support plates, through which the partitions with higher rigidity correspond to support the flexible display panel above the gaps between two adjacent support plates, specifically, for example,
  • the two sides of the partition with high rigidity are erected or partly erected on two adjacent support plates, forming the screen support plate to support the flexible display panel as a whole and stably, and improving the support of the screen support plate to the flexible display at the gap position.
  • the support strength of the panel that is, improves the impact resistance of the flexible display panel, thereby avoiding bending and deformation of the flexible display panel when it is flat, and preventing the flexible display panel from failing at the position opposite to the gap between the support plates. Imperfections such as impacts and dark spots. Based on this, the above-mentioned screen support plate can improve user experience and prolong the service life of electronic equipment.
  • the screen supporting board and the flexible display panel are bonded and fixed by an adhesive layer
  • the adhesive layer between the screen supporting board and the flexible display panel can be a continuous entire surface adhesive layer, or it can be A point-break adhesive layer, which can also be an adhesive layer with a hollowed-out area.
  • the stiffness of the second subsection and the fourth subsection is greater than that of the third subsection, and the stiffness of the first subsection, the third subsection and the fifth subsection is smaller than that of the second subsection and the stiffness of the fourth division. It can be understood that there is no specific limitation on the stiffness of the second and fourth divisions and the stiffness of the second and fourth divisions. It is only necessary to ensure that the first, second, third and fourth divisions are comprehensively considered. It is only necessary that the rigidity of the subregion and the third subsection of the fifth subregion be smaller than that of the second subsection and the fourth subsection.
  • the rigidity of the second subsection and the fourth subsection is greater than that of the third subsection, so that when the electronic equipment is in the folded state, the accommodating space presents a smaller size near one end of the first subsection and the fifth subsection. Small, larger-sized form near the end of the third division.
  • the rigidity of the first subsection, the third subsection and the fifth subsection is less than that of the second subsection and the fourth subsection.
  • the orthographic projection of the first gap on the surface of the screen supporting board is located in the area where the second partition is located, and the second gap is in the The orthographic projection on the board surface of the screen support board is located in the area where the fourth subdivision is located.
  • the second partition of the screen supporting board can completely cover the first gap between the first supporting board and the second supporting board
  • the fourth partition of the screen supporting board can completely cover the second supporting board. The second gap between the plate and the third support plate.
  • the above-mentioned electronic device realizes the full coverage of the second partition on the first gap, and the full coverage of the fourth partition on the second gap; on the other hand, the second partition and the fourth partition are partitions that run through the screen support plate , improving the balance of the bending performance of the screen support plate in the bending direction.
  • the orthographic projection of the portion of the first gap whose extending direction is perpendicular to the first direction on the surface of the screen support plate is located at the second In the region where the partition is located, the orthographic projection of the part of the second gap whose extending direction is perpendicular to the first direction on the surface of the screen support plate is located in the region where the fourth partition is located.
  • the second subregion and the fourth subregion are rectangular areas, and the rectangular areas penetrate the screen support plate along a direction perpendicular to the first direction.
  • the second subregion and the fourth subregion penetrate the rectangular area of the screen support plate along a direction perpendicular to the first direction.
  • the second partition and/or the fourth partition are set as several partitions passing through the screen supporting plate along the second direction, which ensures the structural consistency of the screen supporting plate at the same position along the first direction, At the same time, it is convenient to spread the stress generated in the folded state to both ends of the screen support plate along the second direction, so as to avoid residual stress as much as possible.
  • the above implementation method ensures the consistency of the bending performance of the screen supporting board, avoids the formation of partial protrusions along the second direction of the screen supporting board in the folded state, and further prolongs the distance between the screen supporting board and the flexible display panel. service life.
  • a size range of the second subregion and the fourth subregion in the first direction is 0.5 mm to 2 mm.
  • the size range of the second partition in the length direction of the mobile phone is 0.5mm ⁇ 2mm.
  • the second subsection within this size range can stably support the first support plate and the second support plate on both sides of the first gap while ensuring the bendability of the third subsection.
  • the size range of the fourth partition in the length direction of the mobile phone is 0.5mm ⁇ 2mm.
  • the fourth subsection within this size range can stably support the second support plate and the third support plate on both sides of the second gap while ensuring the bendability of the third subsection.
  • the material of the first partition, the second partition, the third partition, the fourth partition and the fifth partition is the same, and the thickness of at least some regions in the second partition and the fourth partition is less than The thickness of the first, third and fifth divisions.
  • the second sub-section and the fourth sub-section are The thinning process reduces the thickness of the second subregion and the fourth subregion to appropriately reduce the rigidity of the second subregion and the fourth subregion, thereby improving the bendability of the second subregion and the fourth subregion. It can be understood that the stiffness of the second subregion and the fourth subregion after the thinning treatment is still higher than that of the first subregion, the third subregion and the fifth subregion.
  • thinning treatment is performed on the side close to the support plate in the second sub-section and the fourth sub-section.
  • the bendability of the second and fourth subregions is appropriately improved by reducing the thickness of the second and fourth subregions, that is, while ensuring the support stability of the second and fourth subregions Improve the bendability of the second and fourth divisions.
  • grooves are formed on the second partition and the fourth partition, and the grooves extend along the second direction; when the electronic device is in a flattened state, the second direction is parallel to the screen support. As for the board surface of the pallet, the second direction is perpendicular to the first direction.
  • the electronic device can be etched to form grooves on the second subregion and the fourth subregion.
  • both the second sub-section and the fourth sub-section are provided with grooves along the second direction, wherein the second direction is parallel to the surface of the screen supporting board when the electronic device is in a flattened state, and perpendicular to the first direction.
  • the second partition and at least a part of the fourth partition on the same screen support plate are provided with grooves, and no grooves are provided on other parts, for example, the second partition is close to the first support along the first direction Both sides of the plate and the second support plate retain the original thickness, and a groove is opened in the middle area between the two sides.
  • all parts of the second subregion and all parts of the fourth subregion on the same screen support plate are provided with grooves.
  • the thickness of the bottom of the groove in the second subregion is the thickness of at least a partial area in the second subregion
  • the thickness of the bottom of the groove in the fourth subregion is the thickness of at least a partial area in the fourth subregion.
  • the opening of the groove is opposite to the light-emitting surface of the flexible display panel.
  • the notch of the groove faces the support plate, and the bottom of the groove faces the flexible display panel, so as to avoid the feeling of empty position when the user touches the flexible display panel as much as possible, and improve user experience.
  • the groove includes a first groove and a second groove, a reinforcing rib is provided between the first groove and the second groove, and the reinforcing rib extends along the second direction.
  • the electronic device described above can further increase the rigidity and strength of the second and fourth partitions.
  • the groove when the overall size of the groove along the first direction is larger, for example, when the size of the groove along the first direction is larger than that, the groove includes a first groove and a second groove, wherein the first groove A reinforcing rib is arranged between the groove and the second groove.
  • the size of the grooves in the second subregion and the fourth subregion in the thickness direction of the electronic device ranges from 0.03 mm to 0.15 mm.
  • the size range of the groove in the second partition in the thickness direction of the electronic device is 0.5 mm ⁇ 2 mm.
  • the second subsection within this size range can stably support the first support plate and the second support plate on both sides of the first gap while ensuring the bendability of the third subsection.
  • the size range of the groove in the fourth subregion in the thickness direction of the electronic device is 0.5mm ⁇ 2mm.
  • the fourth subsection within this size range can stably support the second support plate and the third support plate on both sides of the second gap while ensuring the bendability of the third subsection.
  • the first subregion, the second subregion, the third subregion, the fourth subregion and the fifth subregion are made of the same material, and the second subregion and the fourth subregion are provided with a plurality of hole structures.
  • the hole structure may be a through hole or a blind hole.
  • the largest one-dimensional size of the hole structure within the surface of the screen supporting board is smaller than the smallest one-dimensional size of the smallest contact area.
  • the minimum touch area may be a touch area obtained based on big data and used to characterize the user's minimum touch area or minimum one-way touch size, for example, it may be the minimum area where the user's finger touches the screen.
  • the shape of the section of the hole structure parallel to the surface of the screen support plate is any one of circle, square, racetrack and dumbbell.
  • the grooves, ribs, and hole structures in the second and fourth partitions can be arbitrarily matched according to the bending requirements and support requirements, that is, grooves can be provided in the second and fourth partitions, Or, the second subregion and the fourth subregion can set up a hole structure in the groove, or, the second subregion and the fourth subregion can directly set up a hole structure, or, the second subregion and the fourth subregion can set reinforcing ribs in the groove , or, divide a partition into multiple sub-partitions, and each of the sub-partitions can adopt any of the above-mentioned forms.
  • the grooves, ribs and hole structures in the second subregion and the fourth subregion can be matched according to the width of the gap between two adjacent support plates. For example, the wider the gap between two adjacent support plates, the smaller the depth of the groove, the denser the layout of the ribs, the smaller the aperture of the hole structure, and the smaller the coverage ratio of the hole structure.
  • the grooves, ribs and hole structures in the second subregion and the fourth subregion are matched according to the contour shape of the gap between two adjacent support plates.
  • the material of the screen support plate is at least one of titanium alloy, aluminum alloy and stainless steel.
  • the processing technology of the screen support plate is etching.
  • an etching process is used to etch the second bending groove, the groove, the reinforcing rib, the hole structure, the elongated through hole and the third bending groove on the screen support plate.
  • the first partition, the third partition and the fifth partition are provided with elongated through holes, a single elongated through hole extends in a direction perpendicular to the first direction, and multiple The elongated through holes are arranged adjacent to each other and staggered along the first direction; the first surface of the second subsection is provided with a first bending groove, and the first surface of the second subsection is opposite to the light-emitting surface of the flexible display panel; The first surface of the subsection is provided with a third bending groove, and the first surface of the fourth subsection is opposite to the light emitting surface of the flexible display panel.
  • the electronic device further includes a first middle frame, a second middle frame, and a bending mechanism; wherein, the first subsection is fixedly connected to the first middle frame, and the fifth subsection is connected to the The second middle frame is fixedly connected, the first middle frame and the second middle frame are respectively fixedly connected to the bending mechanism; the first support plate is rotatably connected to the bending mechanism and can slide relative to the bending mechanism, and the second support plate is rotatably connected to the bending mechanism Bending mechanism, and can slide relative to the bending mechanism; when the electronic device is in the flattened state, the furthest distance between the second support plate and the shell in the bending mechanism is the first distance; when the electronic device is in the folded state, the second The farthest distance between the support plate and the housing in the bending mechanism is the second distance, and the first distance is greater than the second distance; when the electronic device is in a flattened state, the upper surface of the first support plate, the upper surface of the second support plate,
  • the first supporting board, the second supporting board and the third supporting board can be avoided automatically to form an accommodating space for accommodating the flexible display panel.
  • the area of the accommodating space adjacent to the second support plate is larger in size, and the area away from the second support plate is smaller in size, so that after the bending mechanism is folded, the creases corresponding to the flexible display panel arranged on the bending mechanism are not obvious, Damage to the flexible display panel during bending can be avoided.
  • the end of the first support plate away from the second support plate moves away from the shaft seat, and the end of the third support plate away from the second support plate moves away from the shaft seat.
  • the supporting surface of the first supporting plate, the supporting surface of the second supporting plate and the supporting surface of the third supporting plate are flush, so that the screen supporting plate and the flexible display panel are in a flattened state .
  • the first support plate, the second support plate and the third support plate can provide flat and strong support for the flexible display panel, thereby improving the user's operating experience and viewing experience.
  • the screen supporting board further includes a sixth subsection disposed between the second subsection and the third subsection, and a sixth subsection disposed between the third subsection and the fourth subsection
  • the seventh subsection between; the first support plate is connected with at least a part of the sixth subsection, and the third support plate is connected with at least a part of the seventh subsection.
  • the sixth subsection of the screen support plate may be fixedly connected to a partial area of the support surface of the first support plate, for example, may be bonded and fixed through an adhesive layer.
  • the seventh subsection may be fixedly connected to a partial area of the supporting surface of the third supporting plate, for example, may be bonded and fixed by an adhesive layer.
  • the adhesive layer between the first subsection and the first middle frame, the adhesive layer between the sixth subsection and the first support plate, the adhesive layer between the seventh subsection and the third support plate, the The glue layer between the fifth branch and the second middle frame can be a continuous whole surface glue layer, a broken glue layer, or a glue layer with a hollow area.
  • a foldable screen supporting board wherein the screen supporting board can be applied to an electronic device including a flexible display panel and a supporting board.
  • the screen support plate includes a first subsection, a second subsection, a third subsection, a fourth subsection and a fifth subsection arranged in sequence along the third direction, and the third subsection includes The first partition, the second partition, the third partition, the fourth partition and the fifth partition, wherein the stiffness of the first partition, the third partition and the fifth partition is smaller than the stiffness of the second partition and the fourth partition.
  • the rigidity of the first subsection, the third subsection and the fifth subsection is smaller than that of the second subsection and the fourth subsection.
  • the orthographic projection of the first gap on the surface of the screen supporting board is located in the area where the second partition is located, and the second gap is in the The orthographic projection on the board surface of the screen support board is located in the area where the fourth subdivision is located.
  • a size range of the second subregion and the fourth subregion in the third direction is 0.5 mm to 2 mm.
  • the second subregion and the fourth subregion are rectangular areas, and the rectangular areas penetrate the screen support plate along a direction perpendicular to the third direction.
  • the material of the first partition, the second partition, the third partition, the fourth partition and the fifth partition are the same, and the thickness of at least part of the second partition and the fourth partition is smaller than that of the first partition.
  • grooves are formed on the second subregion and the fourth subregion, and the grooves extend along a direction perpendicular to the third direction.
  • the opening of the groove is opposite to the light-emitting surface of the flexible display panel.
  • the groove includes a first groove and a second groove, a reinforcing rib is provided between the first groove and the second groove, and the reinforcing rib is along a direction perpendicular to the third direction. direction extension.
  • At least partial regions of the second subregion and the fourth subregion have a size ranging from 0.03 mm to 0.15 mm in the thickness direction of the electronic device.
  • the first subregion, the second subregion, the third subregion, the fourth subregion and the fifth subregion are made of the same material, and the second subregion and the fourth subregion are provided with a plurality of hole structures.
  • the shape of the section of the hole structure parallel to the surface of the screen support plate is any one of circle, square, racetrack and dumbbell.
  • a flexible screen assembly including any one of the screen support plates on the second surface and a flexible display panel, the screen support plate is arranged on the surface of the flexible display panel close to the support plate, And connected with the flexible display panel.
  • Figure 1(a) shows a perspective view of an electronic device 1' in a flattened state in some embodiments
  • Figure 1(b) shows an exploded view of an electronic device 1' in a flattened state in some embodiments
  • Figure 1(c) shows a cross-sectional view of the electronic device 1' along the M'-M' section in Figure 1(a) in a flattened state in some embodiments;
  • Figure 1(d) shows a partial enlarged view of region A in Figure 1(c);
  • Figure 1(e) shows a perspective view of an electronic device 1' in a folded state in some embodiments
  • Figure 1(f) shows a cross-sectional view of an electronic device 1' along the N'-N' section in Figure 1(e) in some embodiments;
  • Figure 1(g) shows a partial enlarged view of B region in Figure 1(f);
  • Figure 2(a) shows a perspective view of the folded state of the screen support plate 10' in some embodiments
  • Figure 2(b) shows a perspective view of the screen support plate 10' and the support plate 30' in a flattened state in some embodiments
  • Figure 3(a) shows a perspective view of the electronic device 1 in a flattened state in some embodiments of the present application
  • Figure 3(b) shows an exploded view of the electronic device 1 in a flattened state in some embodiments of the present application
  • Figure 3(c) shows a perspective view of a support plate 30 in some embodiments of the present application
  • Fig. 3(d) shows the cross-sectional view of the electronic device 1 along the M-M section in Fig. 3(a) in some embodiments of the present application;
  • Figure 3(e) shows a partial enlarged view of region C in Figure 3(d);
  • Figure 4(a) shows a perspective view of the electronic device 1 in a folded state in some embodiments of the present application
  • Fig. 4 (b) shows the cross-sectional view along the N-N section in Fig. 4 (a) of the screen support plate 10, the flexible display panel 20 and the support plate 30 in Fig. 4 (a);
  • Figure 5(a) shows an exploded view of the support plate 30 and the bending mechanism 60 in some embodiments of the present application
  • FIG. 5(b) shows a cross-sectional view of the support plate 30 and the bending mechanism 60 along the N-N section in FIG. 4(b) when the electronic device 1 is in a folded state in some embodiments of the present application;
  • FIG. 5(c) shows a sectional view of the support plate 30 and the bending mechanism 60 along the N-N section in FIG. 4(a) when the electronic device 1 is in a flattened state in some embodiments of the present application;
  • Figure 5(d) shows a schematic diagram of the stiffness of the screen support plate 10 in the electronic device 1 in some embodiments of the present application
  • Figure 6(a) shows a comparison diagram of the screen support plate 10 in the flattened state and the gap projection in the D area of Figure 3(b) in some embodiments of the present application;
  • Figure 6(b) shows a partial enlarged view of the E region in Figure 6(a);
  • FIG. 6(c) shows a schematic diagram of overlapping between the second subsection 200 and the flexible display panel 20 in some embodiments of the present application
  • Fig. 6(d) shows a schematic diagram of overlapping between the second subsection 200 and the flexible display panel 20 in some other embodiments of the present application
  • Fig. 6(e) shows the comparison diagram of the screen support plate 10 in the flattened state and the gap projection in the D area in Fig. 3(b) in some other embodiments of the present application;
  • Fig. 6(f) shows the top view of the screen support plate 10 in the flattened state and the gap projection in the D area in Fig. 3(b) in some other embodiments of the present application;
  • FIG. 7(a) shows a schematic diagram of the third subsection 300 in the screen support plate 10 in some embodiments of the present application
  • Figure 7(b) shows a schematic diagram of the support plate 30 in the screen support plate 10 in some embodiments of the present application
  • FIG. 7(c) shows a schematic diagram of the third subsection 300 in the screen support plate 10 in some other embodiments of the present application.
  • FIG. 7( d) shows a schematic diagram of the third subsection 300 in the screen support plate 10 in some other embodiments of the present application.
  • FIG. 7(e) shows a schematic diagram of the third subsection 300 in the screen support plate 10 in some other embodiments of the present application.
  • Fig. 7 (f) shows the schematic diagram of the third subsection 300 in the screen support plate 10 in some other embodiments of the present application.
  • Figure 8(a) shows a partial enlarged view of the screen support plate 10 in the E area in some other embodiments of the present application
  • Figure 8(b) shows a partial enlarged view of the F1 area in Figure 8(a) in some embodiments of the present application
  • Figure 9(a) shows a partial enlarged view of the screen support plate 10 in the E area in some other embodiments of the present application.
  • Figure 9(b) shows a partial enlarged view of the F2 area in Figure 9(a) in some embodiments of the present application
  • Figure 10(a) shows a partial enlarged view of the screen support plate 10 in the E area in some other embodiments of the present application
  • Figure 10(b) shows a partial enlarged view of the F3 region in Figure 10(a) in some embodiments of the present application
  • Figure 10(c) shows a circular section 381 of a hole structure 380 in some embodiments of the present application
  • Figure 10(d) shows a polygonal cross-section 382 of a hole structure 380 in some embodiments of the present application
  • Figure 10(e) shows a rounded rectangular section 383 of a hole structure 380 in some embodiments of the present application
  • Figure 10(f) shows a racetrack-shaped section 384 of a hole structure 380 in some embodiments of the present application
  • Figure 10(g) shows a dumbbell-shaped cross-section 385 of a hole structure 380 in some embodiments of the present application
  • Figure 10(h) shows a racetrack dumbbell compound cross-section 386 of aperture structure 380 in some embodiments of the present application
  • Fig. 11(a) shows a schematic perspective view of the third subsection 300 in the screen support plate 10 in some embodiments of the present application
  • Fig. 11(b) shows a schematic perspective view of the support plate 30 in the G region in the figure in some embodiments of the present application
  • Fig. 11(c) shows a schematic perspective view of the third subsection 300 and the support plate 30 in the area G in the figure in some embodiments of the present application;
  • FIG. 12 shows a schematic perspective view of the third subsection 300 and the support plate 30 in the screen support plate 10 in other embodiments of the present application.
  • the present application provides an electronic device, which may be a foldable electronic product such as a mobile phone, a tablet computer, a notebook computer, or a wearable device.
  • a foldable electronic product such as a mobile phone, a tablet computer, a notebook computer, or a wearable device.
  • the screen support plate in the electronic device is in the folded state, one end of the accommodation space formed by the support plate is small in size and the other end is large in size, the number of support plates is 3, and the following will assume that the electronic device is a mobile phone, and
  • the shape of the screen supporting plate in the electronic device in the folded state is the shape described above as an example for illustration.
  • the folded state of the screen support board, flexible screen components and electronic devices is called the folded state
  • the state of the screen support board, flexible screen components and electronic devices after being flattened is called the flattened state. state.
  • Fig. 1(a) is a perspective view of an electronic device 1' in a flattened state in some embodiments.
  • Fig. 1(b) is an exploded view of an electronic device 1' in a flattened state in some embodiments.
  • Fig. 1(c) is a cross-sectional view of the electronic device 1' along the M'-M' section in Fig. 1(a) in a flattened state in some embodiments.
  • Figure 1(d) is a partially enlarged view of area A in Figure 1(c).
  • Fig. 1(e) is a perspective view of an electronic device 1' in a folded state in some embodiments.
  • Fig. 1(f) is a cross-sectional view along the N'-N' section in Fig. 1(e) when the electronic device 1' is in a folded state in some embodiments.
  • Figure 1(g) is a partially enlarged view of area B in Figure 1(f).
  • the first direction S 1 , the second direction S 2 , the thickness direction S 3 , the front side and the back side of the screen support plate 10 ′ are defined now.
  • the first direction S1 is the direction in which the first support plate 31 ′, the second support plate 32 ′ and the third support plate 33 ′ are arranged side by side.
  • the first direction S1 is parallel to the surface of the screen supporting plate 10'
  • the second direction S2 is parallel to the surface of the screen supporting plate 10'
  • the first direction S1 and the second direction S1 are parallel to the surface of the screen supporting plate 10'.
  • the two directions S 2 intersect.
  • the first direction S1 and the second direction S2 are perpendicular to each other.
  • the thickness direction S 3 is the direction in which the bottom surface of the electronic equipment 1 ′ points to the top surface of the electronic equipment 1 ′ when the electronic equipment 1 ′ is assembled and placed normally.
  • the front of the flexible display panel is the light emitting surface of the flexible display panel 20 ′
  • the back of the flexible display panel is the surface opposite to the front of the flexible display panel.
  • the front of the screen supporting board is the surface close to the back of the flexible display panel
  • the back of the screen supporting board is the surface opposite to the front of the screen supporting board.
  • the electronic device 1 ′ is a foldable device.
  • the electronic device 1' includes a flexible screen assembly 2' and a supporting device 3'.
  • the flexible screen assembly 2' includes a screen supporting board 10' and a flexible display panel 20', and the screen supporting board 10' is arranged on the back of the flexible display panel.
  • the screen support plate 10' includes a first subsection 100', a second subsection 200', a third subsection 300', a fourth subsection 400' and a fifth subsection 500 distributed sequentially along the first direction S1 '.
  • the support device 3' includes a support plate 30', a first middle frame 40', a second middle frame 50' and a bending mechanism 60'.
  • the support plate 30' includes a first support plate 31', a second support plate 32' and a third support plate 33'.
  • the first support plate 31', the second support plate 32' and the third support plate 33' are sequentially arranged along the first direction S1 .
  • the bending mechanism 60' is located between the first middle frame 40' and the second middle frame 50', and is connected to the first middle frame 40 respectively. ' is fixedly connected with the second middle frame 50'.
  • the first support plate 31', the second support plate 32' and the third support plate 33' are arranged on the bending mechanism 60', and the upper surface of the first support plate 31', the upper surface of the second support plate 32', The upper surface of the third support plate 33', the upper surface of the first middle frame 40' and the upper surface of the second middle frame 50' are in the same plane.
  • the upper surface of the first support plate 31', the upper surface of the second support plate 32', the upper surface of the third support plate 33', the upper surface of the first middle frame 40' and the upper surface of the second middle frame 50' The surfaces are all surfaces close to the screen support plate 10'. It can be understood that the multiple surfaces being in the same plane means that the multiple surfaces are approximately parallel, and the multiple surfaces are basically in the same plane. That is, there may be an included angle within a certain range between the multiple surfaces, and when the multiple surfaces are parallel to each other, there may be a distance between the multiple surfaces within a certain range.
  • the first support plate 31' is connected to the first middle frame 40'
  • the second support plate 32' is connected to the bending mechanism 60'
  • the third support plate 33' is connected to the second middle frame 50'.
  • the back of the screen supporting board of the screen supporting board 10' is respectively connected with the first middle frame 40', the second middle frame 50', the first supporting board 31' and the third supporting board 33'.
  • the first support plate 31' is used to support the second subsection 200'
  • the second support panel 32' is used to support the third subsection 300'
  • the third support plate 33' is used to support the fourth subsection 400 '.
  • the screen support plate 10' is used to support the flexible display panel 20'. Based on this, the first middle frame 40', the second middle frame 50' and the bending mechanism 60' can drive the screen support plate 10' and the flexible display panel 20' to fold or unfold.
  • the screen support plate 10', the flexible display panel 20', the first middle frame 40' and the second middle frame 50' are in the folded state.
  • the second subsection 200', the third subsection 300' and the fourth subsection 400' in the screen support plate 10' are bent around an axis parallel to the second direction S2 .
  • the screen supporting board 10' is located outside the flexible display panel 20' to support the flexible display panel 20'.
  • the first support plate 31', the second support plate 32' and the third support plate 33' are distributed in a triangle with three sides separated from each other, and jointly form an accommodation space (not marked). At least a part of the screen support plate 10' is arranged on within the containment space.
  • the first middle frame 40' is located outside the first support plate 31'
  • the bending mechanism 60' is located outside the second support plate 32'
  • the second middle frame 50' is located outside the third support plate 33'.
  • Fig. 2(a) is a perspective view of the folded state of the screen support plate 10' in some embodiments.
  • the curvature radius of the third subsection 300 ′ is small, that is, the third subsection 300 ′ should have good bendability.
  • the screen supporting board 10' includes a screen supporting board front 10m' and a screen supporting board back 10n' located on both sides.
  • an elongated through hole 390 ′ extending along the second direction S2 is defined in the third subsection 300 ′.
  • the elongated through hole 390' communicates with the front 10m' of the screen supporting board and the back 10n' of the screen supporting board.
  • the above-mentioned screen support plate 10' reduces the rigidity of the screen support plate 10' in the first direction S1 through the elongated through hole 390', and improves the bendability of the screen support plate 10' along the first direction S1 . foldability, thereby satisfying the folding function of the electronic device 1'.
  • Fig. 2(b) is a perspective view of the flattened state of the screen support plate 10' and the support plate 30' in some embodiments.
  • the first support plate 31', the second support plate 32' and the third support plate 33' are juxtaposed in sequence Distributed below the second subsection 200', the third subsection 300' and the fourth subsection 400', the first gap Gap1' between the first support plate 31' and the second support plate 32', and the The second gap Gap2' between the support plate 32' and the third support plate 33' is located below the third subsection 300'.
  • the first support plate 31', the second support plate 32' and the third support plate 33' are separated from each other along the second direction S2 , so that the support plate 30' faces the flexible display panel 20 at the gap position.
  • ' is poor in supporting effect
  • the support effect of the panel 20' is poor. Based on this, neither the supporting board 30' nor the screen supporting board 10' can effectively support the flexible display panel 20' above the gap between two adjacent supporting boards 30'.
  • the flexible display panel 20' When the user touches the flexible display panel 20' above the gap, the flexible display panel 20' is easily bent and deformed, which may cause defects such as failure, impact, and black spots on the flexible display panel 20', affecting the user experience and shortening the length of the electronic device. 1' service life.
  • the present application also provides a screen supporting board, which is applied between the flexible display panel and the supporting board.
  • the screen supporting board includes a first subsection, a second subsection, a The third division, the fourth division and the fifth division, wherein the third division includes the first division, the second division, the third division, the fourth division and the fifth division.
  • the first support plate, the second support plate and the third support plate are also arranged in sequence along the first direction.
  • the stiffness of the second division, the third division and the fourth division is less than that of the first division and the fifth division, and the stiffness of the first division, the third division and the fifth division is less than that of the second division and the fourth division stiffness.
  • the second subsection, the third subsection and the fourth subsection are bent around an axis parallel to the second direction.
  • the first partition corresponds to the first support board
  • the second partition corresponds to the gap between the first support board and the second support board
  • the third partition corresponds to the second support board
  • the fourth partition corresponds to the gap between the first support board and the second support board.
  • the subregion corresponds to the gap between the second support plate and the third support plate
  • the fifth subregion corresponds to the third support plate.
  • the partition is set above the gap, and in the flattened state, the partition overlaps the support plates on both sides of the gap, so that the support plates on both sides of the gap pass through the support partition to realize the continuity of the support plate to the entire third division support.
  • the stiffness of a subsection can be understood as the average stiffness of the entire subsection, and similarly, the stiffness of a subregion can be understood as the average stiffness of the entire subsection.
  • stiffness refers to the ability of a material or structure to resist elastic deformation when a force is applied. Stiffness characterizes the ease of elastic deformation of a material or structure.
  • the stiffness of a material is usually measured by the modulus of elasticity E. In the macro-elastic range, stiffness is a proportionality factor proportional to the part load and displacement, that is, the force required to cause a unit displacement. The higher the stiffness, the higher the ability of the material or structure to resist elastic deformation, that is, the less likely the material or structure is to deform; the lower the stiffness, the lower the ability of the material or structure to resist elastic deformation, that is, the material or structure The easier it is to deform.
  • the stiffness can be related to the material of the material or the structure, the solid volume and the specific structural form. In addition, stiffness can be related to the forming process of the material or structure and the heat treatment process.
  • the board surface of the screen supporting board refers to the surface of the screen supporting board parallel to the light-emitting surface of the flexible display screen.
  • the surface of the screen support plate is a surface parallel to the light-emitting surface of the flexible display screen on the screen support plate, and the surface is a plane. It can be understood that the plane in this application refers to a plane with a flatness within a certain range, not necessarily an absolutely flat surface.
  • the stiffness can be characterized by the volume actually occupied by a material or structure per unit volume. For example, the larger the volume actually occupied by the material or structure per unit volume, that is to say, the fewer the hollow parts of the material or structure per unit volume, the higher the stiffness of the material or structure, in other words, the more bendable the structure is. Low. Conversely, the smaller the volume actually occupied by the material or structure per unit volume, that is to say, the more hollows the material or structure has in the unit volume, the lower the stiffness of the material or structure, in other words, the more bendable the structure is. high.
  • the average stiffness of the structure is also the volume actually occupied by the material or structure per unit volume in terms of the entire structure.
  • the volume actually occupied by the material per unit volume of the material or structure can be adjusted by setting a thinning structure, hollow structure or porous structure on the material or structure.
  • the porous structure may be a porous structure provided on the surface of the material or structure and communicated with the outside, or may be a porous structure provided inside the structure and isolated from the outside.
  • stiffness can also be characterized by material. For example, a material with higher toughness has lower stiffness, and a material with lower toughness has higher stiffness.
  • the above-mentioned screen support plate is provided with partitions with higher rigidity at the gaps between two adjacent support plates, through which the partitions with higher rigidity correspond to support the flexible display panel above the gaps between two adjacent support plates, specifically, for example,
  • the two sides of the partition with high rigidity are erected or partly erected on two adjacent support plates, forming the screen support plate to support the flexible display panel as a whole and stably, and improving the support of the screen support plate to the flexible display at the gap position.
  • the support strength of the panel that is, improves the impact resistance of the flexible display panel, thereby avoiding bending and deformation of the flexible display panel when it is flat, and preventing the flexible display panel from failing at the position opposite to the gap between the support plates. Imperfections such as impacts and dark spots. Based on this, the above-mentioned screen support plate can improve user experience and prolong the service life of electronic equipment.
  • the size of the end of the accommodating space near the first subsection 100 and the fifth subsection 500 is smaller, and the size of the accommodating space near the end of the third subsection 300 is smaller.
  • Fig. 3(a) is a perspective view of the electronic device 1 in a flattened state in some embodiments of the present application.
  • Fig. 3(b) is an exploded view of the electronic device 1 in a flattened state in some embodiments of the present application.
  • the present application provides an electronic device 1 including a flexible screen assembly 2 and a supporting device 3 .
  • the supporting device 3 is used to carry the flexible screen assembly 2 and can be folded or opened synchronously with the flexible screen assembly 2 .
  • the flexible screen assembly 2 includes a screen supporting board 10 and a flexible display panel 20 , and the screen supporting board 10 is arranged on the back of the flexible display panel 20 .
  • the screen support plate 10 includes a first subsection 100 , a second subsection 200 , a third subsection 300 , a fourth subsection 400 and a fifth subsection 500 arranged in sequence along the first direction S1 .
  • the support device 3 includes a support plate 30 , a first middle frame 40 , a second middle frame 50 and a bending mechanism 60 .
  • the first middle frame 40, the second middle frame 50, and the bending mechanism 60 are sequentially arranged along the first direction S1 , and the support plate 30 is arranged on the upper surface of the bending mechanism 60, and supports
  • the upper surface of the plate 30 is flush with the upper surface of the first middle frame 40 and the upper surface of the second middle frame 50 , that is, the upper surface of the support plate 30 is flush with the upper surface of the first middle frame 40 and the upper surface of the second middle frame 50
  • the upper surface is on the same plane.
  • the multiple surfaces being in the same plane means that the multiple surfaces are approximately parallel, and the multiple surfaces are basically in the same plane. That is, there may be an included angle within a certain range between the multiple surfaces, and when the multiple surfaces are parallel to each other, there may be a distance between the multiple surfaces within a certain range.
  • the screen support plate 10 in the flexible screen assembly 2 is arranged on the upper surfaces of the first middle frame 40 , the support plate 30 and the second middle frame 50 .
  • the screen supporting board 10 is located between the flexible display panel 20 and the supporting board 30 .
  • the bending mechanism 60 is located between the first middle frame 40 and the second middle frame 50 , and is fixedly connected to the first middle frame 40 and the second middle frame 50 respectively.
  • the support plate 30 includes a first support plate 31 , a second support plate 32 and a third support plate 33 sequentially arranged along the first direction S1 .
  • the first support plate 31 is movably connected with the first middle frame 40
  • the second support plate 32 is slidably connected with the bending mechanism 60
  • the third support plate 33 is movably connected with the second middle frame 50, wherein the first support plate 31, the second
  • the connection manner between the support plate 32 and the third support plate 33 and the bending mechanism 60 will be described in detail later in conjunction with FIG. 5( a ) and FIG.
  • the back surface 10n of the screen supporting board 10 is fixedly connected with the first middle frame 40 , the second middle frame 50 , the first supporting board 31 and the third supporting board 33 respectively.
  • the first support plate 31 is used to support the second subsection 200
  • the second support plate 32 is used to support the third subsection 300
  • the third support plate 33 is used to support the fourth subsection 400
  • the screen support plate 10 It is used to support the flexible display panel 20 .
  • the screen support plate 10 , the flexible display panel 20 , the first middle frame 40 , the second middle frame 50 and the bending mechanism 60 are in the flattened state.
  • the unfolded state means that the angle between the extending directions of the electronic devices 1 on both sides is approximately 180°.
  • the first middle frame 40 in the flattened state, the bending mechanism 60 and the second middle frame 50 are roughly in the same plane, that is, the extension direction l1 of the first middle frame 40 and the extension direction of the second middle frame 50
  • the included angle between directions l and 2 is roughly 180°.
  • the angle between the first middle frame 40 and the second middle frame 50 is approximately 180°, which means that the angle between l1 and l2 may have some deviation from 180°, for example, between l1 and l2
  • the included angle can be 179°, 180° or 181°, etc.
  • FIG. 3(c) is a perspective view of the support plate 30 in some embodiments of the present application.
  • FIG. 3( d ) is a cross-sectional view of the electronic device 1 in a flattened state along the M-M section in FIG. 3( a ) in some embodiments of the present application.
  • Fig. 3(e) is a partially enlarged view of area C in Fig. 3(d). 3(c) and 3(e), it can be seen that the first support plate 31 has a support surface 31a, the second support plate 32 has a support surface 32a, and the third support plate 33 has a support surface 33a.
  • the supporting surface 31 a , the supporting surface 32 a and the supporting surface 33 a are in the same plane as the upper surface of the first middle frame 40 and the upper surface of the second middle frame 50 .
  • the meaning that multiple surfaces are on the same plane is the same as the above meaning that multiple surfaces are on the same plane, and will not be repeated here.
  • the first gap between the first support plate 31 and the second support plate 32 is denoted as Gap1
  • the second gap between the second support plate 32 and the third support plate 33 is denoted as Gap2 .
  • the third subsection 300 includes a first subsection 310 , a second subsection 320 , a third subsection 330 , a fourth subsection 340 and a fifth subsection 350 sequentially arranged along the first direction S1 .
  • the first subregion 310 corresponds to the first support plate 31
  • the third subregion 330 corresponds to the second support plate 32
  • the fifth subregion 350 corresponds to the third support plate 33 .
  • the second partition 320 corresponds to the first gap Gap1
  • the second partition 340 corresponds to the second gap Gap2.
  • the partition corresponds to the support plate means that the partition is set above the support plate, and in a flattened state, the partition is in contact with the support plate, and the support plate supports the partition.
  • the first partition 310 is disposed above the first support plate 31 , and in a flattened state, the first partition 310 is in contact with the first support plate 31 , so that the first support plate 31 can support the first partition 310 .
  • the third subregion 330 is arranged above the second support plate 32, and in the flattened state, the third subregion 330 is in contact with the second support plate 32, so that the second support plate 32 can support the third subregion 330, the fifth subregion 350 It is disposed above the third supporting plate 33 , and in a flattened state, the fifth subregion 350 is in contact with the third supporting plate 33 , so that the third supporting plate 33 can support the fifth subregion 350 .
  • the partition corresponds to the gap between two adjacent support plates, which means that the partition is set above the gap, and when it is flattened, the partition overlaps the support plates on both sides of the gap, so that the support plates on both sides of the gap pass through the support partition. , to realize the continuous support of the support plate to the entire third subsection 300 .
  • the partition overlapping the support plates on both sides of the gap may mean that the boundaries on both sides of the partition are at least partially overlapped on the support plates on the sides of the gap.
  • the second partition 320 is located above the first gap Gap1 between the first support plate 31 and the second support plate 32, assuming that the first support plate 31 is located on the left side of the second support plate 32, the second partition 320 The left border completely overlaps the first supporting board 31 , and the right border of the second partition 320 completely overlaps the second supporting board 32 .
  • the fourth partition 340 is located above the second gap Gap2 between the second support plate 32 and the second support plate 34, assuming that the second support plate 32 is located on the left side of the third support plate 33, the second partition 340 At least a part of the left boundary of the fourth subregion 340 is overlapped on the second support plate 32 , and at least a part of the right boundary of the fourth subregion 340 is overlapped on the third support plate 33 .
  • the two boundaries in the same partition can be combined arbitrarily according to two types of overlaps: at least a part of them is overlapped with the support plate and all of them are overlapped with the support plate.
  • the screen support plate 10 is located above the first support plate 31, the second support plate 32, the third support plate 33, the first middle frame 40 and the second middle frame 50, And the supporting surface 31 a of the first supporting plate 31 , the supporting surface 32 a of the second supporting plate 32 and the supporting surface 33 a of the third supporting plate 33 are opposite to the back surface 10 n of the screen supporting plate 10 .
  • the second subsection 200 is located above the first support plate 31 and the first middle frame 40
  • the third subsection 300 is located above the first support panel 31, the second support panel 32 and the third support panel 33
  • the fourth subsection 400 is located above the third support plate 33 and the second middle frame 50 .
  • one component is located above another component, and it can be understood that the back of one component is opposite to the front of another component.
  • the flexible display panel 20 is located above the screen supporting board 10, and the flexible display panel back of the flexible display panel 20 is 20n is opposite to the screen support plate front 10m of the screen support plate 10.
  • FIG. 4(a) is a perspective view of the electronic device 1 in a folded state in some embodiments of the present application.
  • FIG. 4( b ) is a cross-sectional view of the screen supporting board 10 , the flexible display panel 20 and the supporting board 30 in FIG. 4( a ) along the NN section in FIG. 4( a ).
  • the bending mechanism 60, the screen support plate 10 and the flexible display panel 20 are all in the folded state, and the first middle frame 40 and the second middle frame 50 are in the opposite position. Phase setting status.
  • the flexible display panel 20 is bent, and the second subsection 200, the third subsection 300 and the fourth subsection 400 in the screen support plate 10 are bent along an axis parallel to the second direction S2 ,
  • An end 100 a of the first subsection 100 away from the second subsection 200 is close to an end 500 a of the fifth subsection 500 away from the fourth subsection 400 , so that the first subsection 100 and the fifth subsection 500 are oppositely disposed.
  • the distance d 1 between the end 200a of the second subsection 200 close to the first subsection 100 and the end 400a of the fourth subsection 400 close to the fifth subsection 500 is smaller than the distance between the two ends 300a and 300b of the third subsection 300 distance d 2 .
  • the second subsection 200 and the fourth subsection 400 are bent toward the outside, that is, the bending axis 11 of the second subsection 200 is located outside the screen support plate 10, and the bending axis of the fourth subsection 400 is l 2 is located on the outside of the screen supporting board 10 .
  • the third subsection 300 is bent toward the inside, that is, the bending axis 13 of the third subsection 300 is located inside the screen support plate 10 . It can be understood that, generally speaking, the bending axis l 1 of the second subsection 200 , the bending axis l 3 of the third subsection 300 , and the bending axis l 2 of the fourth subsection 400 are parallel to each other.
  • the screen support plate 10 is located outside the flexible display panel 20, and the first support plate 31, the second support plate 32, and the third support plate 33 are arranged in a triangle with three sides separated from each other, and are located outside the screen support plate 10.
  • the frame 40 , the bending mechanism 60 and the second middle frame 50 are located outside the first support plate 31 , the second support plate 32 and the third support plate 33 .
  • the electronic device 1 in the example shown in this application is an inward-folding foldable device
  • the outer side refers to the side facing away from the light-emitting surface of the flexible display surface 20
  • the inner side refers to the side facing the light-emitting surface of the flexible display surface 20. side.
  • the electronic device 1 can also be relatively unfolded or relatively folded to an intermediate state, wherein the intermediate state can be any state between the unfolded state and the folded state.
  • Fig. 5(a) is an exploded view of the support plate 30 and the bending mechanism 60 in some embodiments of the present application.
  • the bending mechanism 60 includes a shaft seat 61, a first bracket 62, a second bracket 63, a synchronization device 64, a first synchronization arm 65, a second synchronization arm 66, a slider 67 and a housing 68 .
  • first bracket 62 can be rotatably connected to the shaft seat 61
  • second bracket 63 can be rotatably connected to the shaft seat 61
  • the first bracket 62 and the second bracket 63 are oppositely arranged on both sides of the shaft seat 61, and the shaft seat 61 is installed to the housing 68.
  • the synchronizing device 64 is used to realize the relative folding or relative flattening of the first middle frame 40 and the second middle frame 50 synchronously.
  • the synchronization device 64 is rotatably connected to the shaft seat 61, the movable end of the first synchronization arm 65 is slidably connected to the first support 62, and the movable end of the first synchronization arm 65 is also rotatably connected to the first support 62, the synchronization of the first synchronization arm 65
  • the end of the first synchronizing arm 65 is rotatably connected to the shaft seat 61, and the synchronizing end of the first synchronizing arm 65 is engaged with the synchronizing device 64.
  • the first synchronization arm 65 will affect the rotation angle of the first bracket 62
  • the second synchronization arm 66 will affect the rotation angle of the second bracket 63 .
  • a slide block 67 is installed on the axle seat 61, and the slide block 67 is slidably connected to the axle seat 61.
  • the first bracket 62 and the second bracket 63 are rotationally connected with the slide block 67, that is, the first bracket 62 and the second bracket 63 pass through the slide block. 67 is rotatably connected with the shaft seat 61.
  • the screen supporting board 10 and the flexible display panel 20 are bonded and fixed by an adhesive layer.
  • the flexible display panel 20 is bonded and fixed to a partial area of the screen support plate 10 through an adhesive layer.
  • the local area refers to other parts of the screen support plate 10 except the third subsection 300 .
  • the entire area of the screen support plate 10 and the flexible display panel 20 is bonded and fixed by an adhesive layer.
  • the second support plate 32 is mounted to the shaft seat 61 .
  • the second support plate 32 can move in the thickness direction S3 relative to the shaft seat 61, that is, the second support plate 32 moves away from the second support plate 32 along the thickness direction S3
  • the direction movement of the shaft seat 61 or the second support plate 32 moves toward the direction close to the shaft seat 61 along the thickness direction S3 , that is, the second support plate 32 is a plate body that can be lifted and lowered, and the second support plate 32 can be lifted and lowered.
  • FIG. 5(b) is a cross-sectional view of the support plate 30 and the bending mechanism 60 along the NN section in FIG.
  • FIG. 5(b) when the electronic device 1 is in a folded state in some embodiments of the present application, as shown in FIG. 5(b)
  • the farthest distance between the second support plate 32 and the housing in the bending mechanism 60 is the first distance d 3 .
  • Figure 5(c) is a cross-sectional view of the support plate 30 and the bending mechanism 60 along the NN section in Figure 4(a) when the electronic device 1 is in a flattened state in some embodiments of the present application, as shown in Figure 5(c) , when the electronic device 1 is in the folded state, the farthest distance between the second support plate 32 and the housing in the bending mechanism 60 is the second distance d 4 .
  • the first distance d 3 is greater than the second distance d 4 .
  • the second support plate 32 moves away from the housing 68 , that is, the second support plate 32 gradually rises to support the flexible display panel 20 .
  • the second support plate 32 moves toward the direction close to the housing 68, that is, the second support plate 32 gradually descends to cooperate with the first support plate 31 and the third support plate 33 to form a housing for the flexible display panel 20.
  • the bending mechanism 60 includes an elastic connection structure, and the second support plate 32 is elastically connected to the shaft seat 61 through the elastic connection structure.
  • the elastic connection structure drives the second support plate 32 moves toward the shaft seat 61 along the thickness direction S3 .
  • the above-mentioned elastic connection structure is simple in structure, easy to operate, and has high precision in controlling the liftable movement of the second support plate 32 .
  • the first support plate 31 is rotatably connected to the first bracket 62, and the first support plate 31 is slidably connected to the shaft seat 61. While the first support plate 31 can rotate relative to the first bracket 62, the first support plate 31 can also rotate relative to the shaft seat. 61 slides.
  • the first support plate 31 and the third support plate 33 are distributed on two sides of the second support plate 32 .
  • the third support plate 33 is rotatably connected to the second bracket 63 , and the third support plate 33 is slidably connected to the shaft seat 61 .
  • the third support plate 33 can rotate relative to the second bracket 63 and also slide relative to the shaft seat 61 .
  • the screen support plate 10 further includes a sixth subsection 600 and a seventh subsection 700, and the first subsection 100, the second subsection 200, the sixth subsection 600, the third subsection 300, The seventh subsection 700, the fourth subsection 400 and the fifth subsection 500 are sequentially arranged along the first direction S1 .
  • the first middle frame 40 and the second middle frame 50 are respectively fixedly connected with the screen supporting board 10 .
  • the first support plate 31 is connected to at least a part of the sixth subsection 600
  • the third support part 33 is connected to at least a part of the seventh subsection 700 .
  • the first subsection 100 of the screen supporting board 10 is installed on the first middle frame 40
  • the fifth subsection 500 is installed on the second middle frame 50 .
  • the second subsection 200, the third subsection 300 and the fourth subsection 400 are respectively bent, and the second subsection 200, the sixth subsection 600, the third subsection 300, and the seventh subsection 700 Together with the fourth subsection 400, it forms a specific shape.
  • the first middle frame 40 and the second middle frame 50 are relatively unfolded or folded
  • the first middle frame 40 drives the first subsection 100 to move
  • the second middle frame 50 drives the fifth subsection 500 to move
  • the first subsection 500 moves.
  • the part 100 and the fifth subsection 500 are folded or unfolded relative to each other, and the second subsection 200 , the third subsection 300 and the fourth subsection 400 of the flexible display panel 20 are deformed. It can be understood that the third support plate 33 is connected in a similar manner to the first support plate 31, and will not be repeated here.
  • the sixth subsection 600 of the screen support plate 10 may be fixedly connected to a partial area of the support surface 32 a of the first support plate 31 , for example, may be bonded and fixed by an adhesive layer.
  • the seventh subsection 700 may be fixedly connected to a partial area of the supporting surface 33 a of the third supporting plate 33 , for example, may be fixed by adhesive bonding.
  • the adhesive layer between the fifth subsection 500 and the second middle frame 50 may be a continuous entire surface adhesive layer, or a point-broken adhesive layer, or an adhesive layer with a hollowed-out area,
  • the embodiment of the present application does not specifically limit the solution of the adhesive layer, and any adhesive layer that can realize the interconnection of the above components falls within the protection scope of the present application.
  • the continuous entire surface of the adhesive layer can provide sufficient bonding force to the two parts that need to be bonded, thereby ensuring the stability of the bonding between the two parts.
  • the point-breaking adhesive layer bonds the two parts at the necessary sticking points to prevent the adhesive layer from overflowing or being exposed, thereby preventing dust, water vapor, etc. from being adhered and stored between the two parts.
  • FIG. 5( d ) shows a schematic diagram of the rigidity level of the screen support plate 10 , wherein areas with darker filling colors have higher stiffness, and areas with lighter filling colors have lower stiffness.
  • the rigidity of the first subsection 100 and the fifth subsection 500 is greater than that of the second subsection 200 , the third subsection 300 and the fourth subsection 400 .
  • Rigidity of the third subsection 300 is smaller than that of the second subsection 200 and the fourth subsection 400 .
  • the rigidity of the first subregion 310 , the third subregion 320 and the fifth subregion 350 in the third subsection 300 is smaller than that of the second subregion 320 and the fourth subregion 340 in the third subsection 300 .
  • the stiffness of the second subsection 320 and the fourth subsection 340 is not specifically limited compared to the stiffness of the second subsection 200 and the fourth subsection 400, and the stiffness of the second subsection 320 and the fourth subsection 340 may be slightly higher than, It is slightly lower than or equal to the rigidity of the second subsection 200 and the fourth subsection 400 . But the stiffness of the first subsection 310 , the third subsection 320 and the fifth subsection 350 is less than that of the second subsection 200 and the fourth subsection 400 .
  • the stiffness of the sixth subsection 600 and the seventh subsection 700 is not specifically limited, and in principle should be greater than the stiffness of the second subsection 200, the third subsection 300 and the fourth subsection 400, for example, the sixth subsection 600 and the seventh subsection
  • the stiffness of the seventh subsection 700 is equivalent to that of the first subsection 100 and the fifth subsection 500 .
  • the second subsection 200 , the third subsection 300, and the fourth subsection 400 are all smaller than those of the first subsection 100 and the fifth subsection 500, the volume actually occupied by the material or structure per unit volume In the case of characterizing stiffness, the second subsection 200 , the third subsection 300 and the fourth subsection 400 are all provided with thinning regions.
  • the thinned area refers to an area whose thickness is smaller than the overall thickness of the screen support plate 10 .
  • the adhesive layer with hollowed out area is especially suitable for between the second subsection 200 and the first middle frame 40, between the third subsection 300 and the first support plate 31, and between the third subsection 300 and the second support plate. 32, between the third subsection 300 and the third support plate 33, and between the fourth subsection 400 and the second middle frame 50.
  • the above implementation method adopts a large-sized adhesive layer with a hollow area to realize the second subsection 200, the third subsection 300, the fourth subsection 400, the first middle frame 40, the second middle frame 50, and the first support plate. 31.
  • the one-time bonding between multiple parts such as the second support plate 32 and the third support plate 33 simplifies the bonding steps, improves the bonding efficiency, and can also avoid long-shaped through holes, grooves, etc.
  • the exposure of the adhesive layer in the area improves the stability of the bonding between the components, thereby increasing the service life of the electronic device.
  • the adhesive layer screen with the hollow area can also be suitable for the connection between the supporting board and the flexible display panel.
  • the relative positions of the first support plate 31 , the second support plate 32 and the third support plate 33 change, that is, the second subdivision 200 cannot be completely pasted on the first supporting board 31 , all of the third subsection 300 cannot be pasted on the second supporting board 32 , and all of the fourth subsection 400 cannot be pasted on the third supporting board 33 . Therefore, the area where the second subsection 200 and the first support plate 31 are always connected, the area where the third subsection 300 is always connected with the second support plate 32, and the area where the fourth subsection 400 and the first support plate 32 are always connected can be removed on the entire adhesive layer.
  • Hollow outs are provided in areas other than the area where the three support plates 33 are always in contact, so as to avoid sticking and peeling of components during the switching process of the electronic device between the folded state and the flattened state, and improve the efficiency of the folding and flattening operation of the electronic device Fluency improves user experience.
  • connection between the first middle frame 40 and the bending mechanism 60 and the connection between the second middle frame 50 and the bending mechanism 60 can be fastening structure fixing, welding, bonding, Fixed installation by buckle connection and other methods.
  • the first bracket 62 is fixedly connected to the first middle frame 40
  • the second bracket 63 is fixedly connected to the second middle frame 50. Therefore, when the first bracket 62 rotates relative to the shaft seat 61 and the second bracket 63 rotates relative to the shaft seat 61, The first middle frame 40 moves relative to the second middle frame 50 , the first bracket 62 drives the first middle frame 40 and the second bracket 63 drives the second middle frame 50 to be relatively folded or unfolded.
  • the above-mentioned structure can automatically avoid the first support plate 31 , the second support plate 32 and the third support plate 33 to form an accommodating space (not shown) for accommodating the flexible display panel 20 .
  • the area of the accommodation space adjacent to the second support plate 32 has a larger size, and the area away from the second support plate 32 has a smaller size, so that after the bending mechanism 60 is folded, it corresponds to the flexible display panel 20 disposed on the bending mechanism 60.
  • the creases are not obvious, which can avoid damage to the flexible display panel 20 during the bending process.
  • the above structure enables the first support plate 31 , the second support plate 32 and the third support plate 33 to provide flat and strong support for the flexible display panel 20 when the user performs a touch operation, thereby improving the user's operating experience and viewing experience.
  • the first direction S 1 is the height and width direction of the electronic device 1
  • the second direction S 2 is the width direction of the electronic device 1
  • the first direction S1 is the width direction of the electronic device 1
  • the second direction S2 is the height direction of the electronic device 1 .
  • the flexible display panel 20 can be an organic light-emitting diode (organic light-emitting diode, OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode).
  • OLED organic light-emitting diode
  • active-matrix organic light-emitting diode active-matrix organic light-emitting diode
  • AMOLED organic light-emitting diode
  • mini organic light-emitting diode mini organic light-emitting diode
  • micro light-emitting diode micro light-emitting diode
  • micro organic light-emitting diode micro organic light-emitting diode
  • quantum dot light emitting diodes quantum dot light emitting diodes, QLED
  • the electronic device 1 may further include a plurality of internal modules (not shown) accommodated in the supporting device 3 .
  • Multiple modules include but are not limited to motherboards, processors, memory, batteries, camera modules, earpiece modules, speaker modules, microphone modules, antenna modules, sensor modules, etc., which are not specifically limited in this application.
  • FIG. 6( a ) is a perspective view of the screen support plate 10 in a flattened state in some embodiments of the present application, wherein the perspective view of FIG. 6( a ) is different from that of FIG. 3( a ).
  • the projection g1 is the projection of the first gap Gap1 on the back surface 10b of the screen support plate in Fig. 3(e)
  • the projection g1 is in the second partition 320
  • the projection g2 is 6(a)
  • the projection of the second gap Gap2 on the back surface 10b of the screen support plate the projection g2 is in the fourth partition 340 . It can be understood that due to limitations in size and clarity, the projection of the gap is simplified as a line.
  • the structure of the screen support plate 10 in this application will be described in detail below with reference to FIG. 6( a ).
  • the third subsection 300 in the screen support plate 10 includes a first subsection 310, a second subsection 320, a third subsection 330, and a fourth subsection arranged in sequence along the first direction S1 . 340 and 350 in the fifth division.
  • the stiffness of the second subregion 320 and the fourth subregion 340 is higher than that of the first subregion 310 , the third subregion 330 and the fifth subregion 350 . That is to say, the bendability of the first subregion 310 , the third subregion 330 and the fifth subregion 350 is higher, and the support performance of the second subregion 320 and the fourth subregion 340 is better.
  • the first subregion 310 corresponds to the first support plate 31
  • the third subregion 330 corresponds to the second support plate 32
  • the fifth subregion 350 corresponds to the third support plate 33
  • the second section 320 corresponds to the first gap Gap1 between the first support plate 31 and the second support plate 32
  • the fourth section 340 corresponds to the second gap Gap2 between the second support plate 32 and the third support plate 33 .
  • Fig. 6(b) is a partial enlarged view of area E in Fig. 6(a).
  • the first subregion 310 , the third subregion 330 and the fifth subregion 350 in the third subsection 300 are provided with elongated through holes 390 .
  • the elongated through hole 390 communicates with the front 10m of the screen supporting board and the back 10n of the screen supporting board.
  • a single elongated through hole 390 extends along the second direction S 2 , and a plurality of elongated through holes 390 are arranged adjacent to each other and alternately along the first direction S 1 .
  • the elongated through holes 390 extending along the second direction S2 are opened through the first subregion 310, the third subregion 330 and the fifth subregion 350, reducing the size of the first subregion 310, the third subregion 330 and the
  • the rigidity of the fifth partition 350 along the first direction S 1 improves the bendability of the screen support plate 10 around the axis parallel to the second direction S 2 .
  • the layout of the elongated through holes 390 adjacent to each other along the first direction S1 ensures the rigidity of the first subregion 310, the third subregion 330 and the fifth subregion 350 in the second direction S1 , and further Improve the support strength of the screen support plate 10 to the flexible display face 20 in the flattened state, improve user experience, and prolong the service life of screen components and electronic equipment.
  • the cross-section of the elongated through hole 390 parallel to the surface of the screen supporting board 10 is dumbbell-shaped.
  • the dumbbell shape is a strip-shaped structure in the middle part, and the two ends of the strip-shaped structure are provided with a track structure with a width larger than the middle part.
  • the large size in the second direction S2 ensures that the third sub-section
  • the bendability of 300 around the axis parallel to the second direction S2 , and secondly, in the first direction S1 , setting the runway structures at both ends to a larger size can improve the bendability of the third subsection 300, as much as possible
  • the size of the middle part is relatively small, which is used to increase the size of the entity between two adjacent elongated through holes 390 in the flattened state, so as to improve the overall rigidity of the third subsection 300 .
  • dumbbell shape is only one example of the cross-sectional shape of the elongated through hole 390 parallel to the surface of the screen supporting plate 10 , and the cross-sectional shape of the elongated through hole 390 parallel to the surface of the screen supporting plate 10
  • the shape can also be strip-shaped, track-shaped, dumbbell-shaped and other shapes, which are not specifically limited in the present application.
  • the shape of the cross-section of the elongated through hole 390 parallel to the surface of the screen support plate 10 will be described together with the hole structure 380 in the second subregion 320 and the fourth subregion 340 below.
  • the second bending groove 210 and the third bending groove 410 are formed on the surface of the fourth subsection 400 facing away from the flexible display panel 20 . Both the second bending groove 210 and the third bending groove 410 extend along the second direction S2 .
  • the second bending groove 210 and the third bending groove 410 are opened on the side of the screen support plate 10 facing away from the flexible display panel 20 .
  • FIG. 6( c ) is a schematic diagram of overlapping between the second subsection 200 and the flexible display panel 20 in some embodiments of the present application.
  • FIG. 6( d ) is a schematic diagram of overlapping between the second subsection 200 and the flexible display panel 20 in some other embodiments of the present application. Comparing Fig. 6(c) and Fig. 6(d), it can be seen that the notch of the second bending groove 210 in Fig.
  • the flexible display panel 20 faces the support plate 30, and the bottom of the groove faces the flexible display panel 20, which can receive the external load F
  • the flexible display panel 20 is supported by the bottom of the groove, and the virtual position 220 caused by the position of the notch when the second bending groove 210 is reversed according to FIG. better touch experience and prolong the service life of the flexible display panel 20 .
  • the arrangement of the notch and the bottom of the third bending groove 410 is similar to that of the second bending groove 210 , which will not be repeated here.
  • the first gap Gap1 and the second gap Gap2 are in the form of a straight line extending along the second direction S2 .
  • the second partition 320 covers the first gap Gap1
  • the fourth partition 340 covers the second gap Gap2.
  • FIG. 7( a ) is a schematic diagram of the third subsection 300 in the screen support plate 10 when the first gap Gap1 and the second gap Gap2 extend along a straight line in some embodiments of the present application.
  • the projection g1 of the first gap Gap1 between the first support plate 31 and the second support plate 32 on the back surface 10b of the screen support plate is a straight line extending along the second direction S2
  • the second partition 320 is an elongated area covering the projection g 1 (that is, the first gap Gap1 between the first support plate 31 and the second support plate 32)
  • the second partition 320 is along the second direction S 2 extend.
  • the projection g2 of the second gap Gap2 between the second support plate 32 and the third support plate 33 on the back surface 10b of the screen support plate is a straight line extending along the second direction S2
  • the fourth partition 340 is a partial coverage projection g 2 (that is, the second gap Gap2 between the second support plate 32 and the third support plate 33 )
  • the fourth partition 340 extends along the second direction S 2 .
  • the boundaries of the second partition 320 parallel to the second direction S2 are symmetrically distributed on both sides of the projection g1
  • the boundaries of the fourth partition 340 parallel to the second direction S2 are symmetrically distributed on both sides of the projection g2. side.
  • first gap Gap1 and the second gap Gap2 are not straight lines extending along the second direction S2 , as shown in Figure 6(e) and Figure 6(f), the first support plate 31
  • the first gap Gap1 between the second support plate 32 and the second gap Gap2 between the second support plate 32 and the third support plate 33 extend along the fold line.
  • this application needs to adjust the extension form of the second partition 320 and the fourth partition 340 according to the actual shape of the gap, so as to completely cover the first support A first gap Gap1 between the plate 31 and the second support plate 32 , and a second gap Gap2 between the second support plate 32 and the third support plate 33 .
  • an opening (or notch) is opened on the support plate 30, and in order to realize that the support plate 30 is aligned with the screen support plate 10 and the stable support of the flexible display panel, it is also necessary to add a plate structure opposite to the position of the opening (or notch) and having a comparable size.
  • the first support plate 31 is provided with a first notch 31m for preventing interference with the bending mechanism 60
  • the second support plate 32 is provided with a first protrusion matching the first notch 31m.
  • the projection g 1 includes the first segment projection g 11 , the second segment projection g 12 and the third segment projection g 12 There are three segments of segment projection g 13 , wherein the first segment projection g 11 and the third segment projection g 13 are distributed on the same straight line and parallel to the bending axis.
  • the second projection g 12 corresponds to the first notch 31 m of the first support plate 31 and the first protrusion 32 m of the second support plate 32 .
  • the projection g 2 includes three segments of the first projection g 21 , the second projection g 22 and the third projection g 23 , wherein the first projection g 21 and the third projection g 23 are distributed on the same straight line, and parallel to the bending axis.
  • the second projection g 22 corresponds to the third notch 33n of the third support plate 33 and the second protrusion 32n of the second support plate 32 .
  • FIG. 7( c ) is a schematic diagram of the third subsection 300 of the screen support plate 10 in some other embodiments of the present application.
  • the second subregion 320 is a strip-shaped area covering the projection g 1 (that is, the first gap Gap1 between the first supporting plate 31 and the second supporting plate 32), and the second subregion 320 extends along the second direction S2 . That is, the second subregion 320 is a strip-shaped area covering the entire first gap Gap1 including the boundary of the first notch 31m of the first support plate 31 and the boundary of the first protrusion 32m of the second support plate 32 .
  • the fourth subregion 340 is an elongated area covering the projection g2 (that is, the second gap Gap2 between the second support plate 32 and the third support plate 33), and the fourth subregion 340 extends along the second direction S2 . That is, the fourth subregion 340 is a strip-shaped area covering the entire second gap Gap2 including the boundary of the third notch 33n of the third support plate 33 and the boundary of the second protrusion 32n of the second support plate 32 . It can be understood that, for the second notch (not shown) provided on the second support plate 32, and the third protrusion corresponding to the second notch provided on the first support plate 31 and the third support plate 33, the second The setting manner of the second partition 320 and the fourth partition 340 is similar to that in FIG. 7( c ), and will not be repeated here.
  • the shortest distances between the points on the two boundaries of the second subregion 320 parallel to the second direction S2 and the projection g1 are equal, and similarly, the points of the fourth subregion 340 parallel to the second direction S2 The shortest distances between the points on the two boundaries and the projection g2 are equal.
  • FIG. 7( d ) is a schematic diagram of the third subsection 300 of the screen support plate 10 in some other embodiments of the present application.
  • the second subregion 320 is an area extending along the projection g1 , that is, the extension track of the second subregion 320 and the first gap between the first support plate 31 and the second support plate 32
  • the extended locus of Gap1 is the same. That is, the extension track of the second subregion 320 and the extension track of the entire first gap Gap1 including the boundary of the first notch 31m of the first support plate 31 and the boundary of the first protrusion 32m of the second support plate 32 same.
  • the fourth subregion 340 is an area extending along the projection g 2 , that is, the extension locus of the fourth subregion 340 is the same as the extension locus of the second gap Gap2 between the second support plate 32 and the third support plate 33 . That is to say, the extension track of the fourth subregion 340 and the extension track of the entire second gap Gap2 including the boundary of the third notch 33n of the third support plate 33 and the boundary of the second protrusion 32n of the second support plate 32 same.
  • the second The setting manner of the second partition 320 and the fourth partition 340 is similar to that in FIG. 7( d ), and will not be repeated here.
  • the layout of the above-mentioned second partition 320 and fourth partition 340 realizes the first gap Gap1 between the first support plate 31 and the second support plate 32, and the gap between the second support plate 32 and the third support plate 33.
  • the second gap Gap2 while also reducing the proportion of the first partition 320 and the fourth partition 340 on the surface of the screen supporting board 10 as much as possible, that is, ensuring the bendability of the screen supporting board 10 as much as possible.
  • the distances between the points on the boundary of the second subregion 320 parallel to the second direction S2 and the projection g1 are equal, and similarly, on the boundary of the fourth subregion 340 parallel to the second direction S2 The distance between each point of and the projection g 2 is equal.
  • FIG. 7( e ) is a schematic diagram of the third subsection 300 of the screen support plate 10 in some other embodiments of the present application.
  • the second partition 320 includes an extended area extending along the projection g 1 and concave areas on both sides of the extended area (for example, the O area in FIG. 7( e )). That is, the second partition 320 includes the extension track and the extension track of the entire first gap Gap1 including the boundary of the first notch 31m of the first support plate 31 and the boundary of the first protrusion 32m of the second support plate 32. The same extension area, and the area where the first protrusion 32m is located.
  • the fourth subregion 340 includes an extended area extending along the projection g2 (as shown in FIG.
  • the fourth subregion 340 includes the extending track and the extending track of the entire first gap Gap2 including the boundary of the third notch 33n of the third support plate 33 and the boundary of the second protrusion 32n of the second support plate 32 The same extension area, and the area where the second protrusion 32n is located. It can be understood that, for the second notch (not shown) provided on the second support plate 32, and the third protrusion corresponding to the second notch provided on the first support plate 31 and the third support plate 33, the second The configuration of the second partition 320 and the fourth partition 340 is similar to that in FIG. 7( e ), and will not be repeated here.
  • the above-mentioned layout of the second subregion 320 and the fourth subregion 340 prevents the small-area concave regions in the second subregion 320 and the fourth subregion 340 from splitting the overall structure, thereby reducing the processing difficulty.
  • FIG. 7( f ) is a schematic diagram of the third subsection 300 of the screen support plate 10 in some other embodiments of the present application.
  • the difference between Fig. 7(f) and Fig. 7(d) is that in Fig. 7(e), the distance between the second segment projection g 12 and the protruding straight line in the second segment projection g 12 is relatively far, for example, the first segment
  • the second-segment projection g 12 includes successively connected transition line segment g 121 , main line segment g 122 and transition line segment g 123 , the distance between the main line segment g 122 and the straight line where the first-segment projection g 11 and the third-segment projection g 13 are located is relatively long.
  • the second partition 320 includes a sub-partition 321 and a sub-partition 322 .
  • the sub-division 321 covers the main line segment g 122 in the second projection g 12
  • the sub-division 322 covers the first projection g 11 and the third projection g 13
  • the sub-division 321 also covers the transition line segment g 121 is connected with the main line segment g 122 (not marked)
  • the end of the transition line g 123 is connected with the main line segment g 122 (not marked)
  • the sub-division 321 also covers the transition line segment g 121 and the first projection g 11 (not marked), and the end (not marked) where the transition line segment g 123 connects with the third projection g 13 .
  • the second partition 320 may not cover the area between the transition line segment g 121 and the transition line segment g 123 . It can be understood that when the angle between the transition line segment g 121 and the transition line segment g 123 and the bending axis is relatively large (when approaching 90°), there is no need to set a partition at the position where the transition line segment g 121 and the transition line segment g 123 are located, and When the angles between the transition line segment g 121 and the transition line segment g 123 and the bending axis are relatively small (when approaching 0°), the positions where the transition line segment g 121 and the transition line segment g 123 are located can add several 2 smaller partitions.
  • the fourth partition 340 includes a sub-partition 341 and a sub-partition 342 , which will not be repeated here. That is, in the first gap Gap1 between the boundary of the first support plate 31 including the first notch 31m and the boundary of the second support plate 32 including the first protrusion 32m, the extending direction is parallel to the second direction S2.
  • the part includes the gap between the boundary parallel to the second direction S2 in the first notch 31m and the boundary parallel to the second direction S2 in the first protrusion 32m (corresponding to the main line segment g122 ), and the first support plate 31 is the gap between the boundary except the first notch 31m and the boundary of the second supporting plate 32 except the first protrusion 32m (corresponding to the first segment projection g 11 and the third segment projection g 13 ).
  • the orthographic projection of the gap corresponding to the main line segment g 122 on the surface of the screen supporting plate 10 is located within the orthographic projection of the sub-division 321 on the surface of the screen supporting plate 10 .
  • the orthographic projections of the gaps corresponding to the first projection g 11 and the third projection g 13 on the surface of the screen supporting plate 10 are located within the orthographic projections of the sub-divisions 322 on the surface of the screen supporting plate 10 .
  • the second subsection 320, the fourth subsection 340, the subsection 321, the subsection 322, the subsection 341 and the subsection 342 are all along the second The direction S2 runs through the partitions of the screen supporting board 10 .
  • the above-mentioned second partition 320 and/or fourth partition 340 are divided into several partitions penetrating along the second direction S2 to ensure the consistency of the structure of the screen support plate 10 at the same position along the first direction S1 , and at the same time, it is convenient to spread the stress generated in the folded state to both ends of the screen support plate 10 along the second direction S2 , so as to avoid residual stress as much as possible. Therefore, the above implementation method ensures the consistency of the bendability of the screen supporting board 10, avoids the formation of partial protrusions along the second direction S2 of the screen supporting board 10 in the folded state, and further prolongs the screen supporting board 10. and the service life of the flexible display panel 20.
  • FIG. 8( a ) is a partially enlarged view of area E when the screen support plate 10 is flattened in some other embodiments of the present application.
  • Figure 8(b) is a partial enlarged view of the F1 area in Figure 8(a).
  • grooves 360 are defined on the board surfaces of the second partition 320 and the fourth partition 340 , and the extending direction of the groove 360 is parallel to the second direction S 2 . It can be understood that at least a part of the second subregion 320 and at least a part of the fourth subregion 340 on the same screen support plate 10 are provided with grooves 360, and no grooves 360 are provided on other parts.
  • both sides close to the first support plate 31 and the second support plate 32 retain the original thickness, and a groove 360 is provided in the middle area between the two sides.
  • all parts of the second subregion 320 and all parts of the fourth subregion 340 on the same screen supporting board 10 are provided with grooves 360 .
  • the groove 360 is set on the back surface 10n of the screen support plate 10, that is, the groove 360 is set on a side of the screen support plate 10 facing away from the flexible display panel 20. side.
  • the notch of the groove 360 faces the support plate 30
  • the bottom of the groove faces the flexible display panel 20 , so as to avoid the feeling of empty position when the user touches the flexible display panel 20 as much as possible, and improve user experience.
  • the thickness of the screen support plate 10 ranges from 0.10mm to 0.2mm
  • the size of the bottom of the groove 360 ranges from 0.03mm to 0.15mm
  • the depth of the groove 360 ranges from 0.05mm to 0.15mm. 0.17mm. It can be understood that the thickness of the screen support plate 10 is the sum of the bottom dimension of the groove 360 and the groove depth of the groove 360 .
  • FIG. 9( a ) is a partially enlarged view of area E when the screen support plate 10 is flattened in some other embodiments of the present application.
  • Figure 9(b) is a partial enlarged view of the F2 area in Figure 9(a).
  • the groove 360 includes a first groove 361 and a second groove 362, wherein a groove is provided between the first groove 361 and the second groove 362
  • the rib 370 is reinforced, and the extending direction of the rib 370 is parallel to the second direction S2 .
  • the groove 360 when the size of the groove 360 along the first direction S1 is greater than 1.5 mm, the groove 360 includes a first groove 361 and a second groove 362, wherein the first groove 361 and the second groove Ribs 370 are provided between the grooves 362 .
  • the size of the second partition 320 and the fourth partition 340 along the first direction S 1 ranges from 0.5 mm to 2 mm.
  • FIG. 10( a ) is a partially enlarged view of area E when the screen support plate 10 is flattened in some other embodiments of the present application.
  • Fig. 10(b) is a partially enlarged view of the area F3 in Fig. 10(a).
  • the second subregion 320 and the fourth subregion 340 are provided with a plurality of mutually discrete holes Structure 380.
  • the largest one-dimensional size of the hole structure 380 in the surface of the screen supporting board 10 is smaller than the smallest contact The minimum one-dimensional size of the region.
  • the hole structure 380 can be a through hole or a blind hole, and the minimum contact area can be obtained based on big data to represent the touch area when the user's minimum touch area or minimum one-way touch size, for example, it can be the user's finger touching the screen the smallest area of .
  • the hole structures 380 are staggeredly distributed on both sides of the projection of the gap on the board surface.
  • the cross section of the hole structure 380 is a circular cross section 381 .
  • the cross section of the hole structure 380 is a polygonal cross section 382.
  • the section of the hole structure 380 is rounded. Rectangular section 383 .
  • the section of the hole structure 380 is a racetrack-shaped section 384 .
  • the racetrack-shaped section 384 includes a first semicircle 3841 , a rectangle 3842 and a second semicircle 3843 which are sequentially arranged and connected along the same axis. In a direction perpendicular to the same axis, the dimensions of the first semicircle 3841 , the rectangle 3842 and the second semicircle 3843 are equal. Boundaries of the first semicircle 3841 , the rectangle 3842 and the second semicircle 3843 are tangent and transition smoothly.
  • the large size in the second direction S2 ensures the bendability of the third subsection 300 around an axis parallel to the second direction S2 , and secondly, the first direction S 1 , the circular structures at both ends can improve the bendability of the third subsection 300 and avoid cracks at both ends when bending as much as possible.
  • the cross section of the hole structure 380 is a dumbbell-shaped cross section 385 .
  • the dumbbell-shaped section 385 includes a first racetrack shape 3851 , a rectangle 3852 and a second racetrack shape 3853 which are sequentially arranged and connected along the same axis. In a direction perpendicular to the same axis, the dimensions of the first racetrack shape 3851 and the second racetrack shape 3852 are larger than the dimensions of the rectangle 3852 . The boundaries of the first track shape 3851, the rectangle 3852 and the second track shape 3853 are smoothly transitioned.
  • the size of the middle part is relatively small, which is used to increase the size of the entity between the two adjacent hole structures 380 in the second subregion 320 and the fourth subregion 340 in the flattened state, so as to improve the size of the third subsection.
  • the overall rigidity of the 300 and the larger size of the runway structures at both ends can improve the bending performance of the third subsection 300 and avoid cracks at both ends when bending as much as possible.
  • the section of the hole structure 380 is a compound-shaped section 386 of a running track dumbbell.
  • the racetrack dumbbell compound-shaped section 386 includes a first racetrack shape 3861 , a rectangle 3862 and a second racetrack shape 3863 connected in sequence.
  • One side of the first racetrack 3861 , the rectangle 3862 and the second racetrack 3863 is flush, and in a direction perpendicular to one side, the size of the first racetrack 3861 and the second racetrack 3863 is larger than that of the rectangle 3862 .
  • the boundaries of the first racetrack shape 3861 , the rectangle 3862 and the second racetrack shape 3863 are smoothly transitioned.
  • the shape of the elongated through hole 390 is similar to that of the hole structure 380, and the layout of the single elongated through hole 390 is the same as that of the single hole structure 380, for example, the single elongated through hole 390 and the single hole structure 380 are extending along the second direction S2 .
  • the difference between the elongated through hole 390 and the hole structure 380 is that the size of the elongated through hole 390 along the second direction S 2 is larger than the size of the hole structure 380 along the second direction S 2 .
  • the grooves 360, ribs 370 and hole structures 380 in the second subregion 320 and the fourth subregion 340 in this application can be arbitrarily matched according to the bending requirements and support requirements, that is, the second subregion 320 And the fourth subregion 340 can open the groove 360, perhaps, the second subregion 320 and the fourth subregion 340 can open the hole structure 380 in the groove 360, perhaps, the second subregion 320 and the fourth subregion 340 can directly open the hole structure 380
  • the second sub-section 320 and the fourth sub-section 340 may be provided with reinforcing ribs 370 in the groove 360, or a certain sub-section may be divided into multiple sub-sections, and the multiple sub-sections may respectively adopt at least one of the above forms.
  • the grooves 360 , ribs 370 and hole structures 380 in the second subregion 320 and the fourth subregion 340 can be matched according to the width of the gap between two adjacent support plates 30 .
  • the grooves 360 , ribs 370 and hole structures 380 in the second subregion 320 and the fourth subregion 340 are matched according to the contour shape of the gap between two adjacent support plates 30 .
  • FIG. 11( b ) shows a perspective view of the first support plate 31 , the second support plate 32 and the third support plate 33 in the region G in FIG. 11( a ).
  • FIG. 11( c ) shows a schematic diagram of cooperation of the first support plate 31 , the second support plate 32 , the third support plate 33 and the third subsection 300 in the region G in FIG. 11( a ).
  • grooves (not shown, refer to Fig.
  • Discretely distributed hole structures 380 are set on the second end projection g12 on the left side of the middle D region).
  • the outline shape of the gap between two adjacent support plates 30 is the same as that in FIG. 7( e ).
  • the second subsection 320 includes a subsection 323 and a subsection 324 , wherein both the subsection 323 and the subsection 324 are provided with grooves (not shown, refer to FIG. 8( b )).
  • the material of the screen support plate 10 is at least one of titanium alloy, aluminum alloy and stainless steel.
  • the processing technology of the screen support plate 10 is etching.
  • the second bending groove 210 , the groove 360 , the reinforcing rib 370 , the hole structure 380 , the elongated through hole 390 and the third bending groove 410 on the screen support plate 10 are etched by an etching process.
  • the present application also provides a flexible screen assembly 2, the flexible screen assembly 2 includes any of the above-mentioned screen supporting boards 10 and flexible display panels 20, the screen supporting board 10 It is arranged on the back of the flexible display panel 20 and connected with the flexible display panel 20 .
  • the flexible display panel 20 is bonded and fixed to a partial area of the screen support plate 10 through an adhesive layer.
  • the local area refers to other parts of the screen support plate 10 except the third subsection 300 .
  • the entire area of the screen support plate 10 and the flexible display panel 20 is bonded and fixed by an adhesive layer.
  • the present application also provides an electronic device 1 , such as any one of the above-mentioned electronic devices 1 , which will not be described in detail here.
  • the terms “installation”, “installation”, “connection” and “attachment” should be understood in a broad sense, for example, it can be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components.
  • installation can be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components.

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Abstract

本申请涉及终端领域，公开了一种电子设备、屏幕承托板和柔性屏幕组件。其中，电子设备具体包括可折叠的屏幕承托板、柔性显示面板和支撑板，支撑板包括第一支撑板、第二支撑板和第三支撑板。屏幕承托板在两个相邻支撑板之间的间隙的相对位置处设有刚度大于周围分区的加强区，该加强区位于至少部分间隙上方，并搭接于该部分间隙两侧的支撑板上。上述电子设备实现相邻两个支撑板对屏幕承托板的整体支撑，改善支撑板在间隙处对屏幕承托板的支撑，进而实现屏幕承托板对柔性显示面板的稳定的支撑。上述电子设备能够提高柔性显示面板在间隙的相对位置处的抗冲击能力，进而保证电子设备使用过程中，柔性显示面板的平整度及稳定性，提升用户体验感。

Description

电子设备、屏幕承托板及柔性屏幕组件
本申请要求于2021年9月3日提交中国专利局、申请号为202111032646.4、申请名称为“电子设备、屏幕承托板及柔性屏幕组件”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
本申请涉及终端领域，特别涉及一种电子设备、屏幕承托板及柔性屏幕组件。
背景技术
内折叠设备中，为了弱化柔性显示面板的折痕，折叠后的柔性屏幕组件形成一种特定形状。为了在内折叠设备中形成上述特定形状，通常需要支撑板对柔性屏幕组件进行支撑。
柔性屏幕组件包括柔性显示面板和位于其背部的屏幕承托板，为了实现特定形状的弯折，柔性显示面板和屏幕承托板均需要具备良好的柔性，同时为了保证内折叠设备展平状态时，柔性屏幕组件的平整度，还需要屏幕承托板具备一定的刚性。
发明内容
为了保证柔性屏幕组件弯折状态时呈特定形状的弯折以及展平状态时的平整度。本申请提供一种具有良好的柔性及刚性的屏幕承托板、电子设备及柔性屏幕组件。其中，电子设备具体包括可折叠的屏幕承托板、柔性显示面板和支撑板，支撑板包括第一支撑板、第二支撑板和第三支撑板。当电子设备处于展平状态时，屏幕承托板夹设于柔性显示面板和支撑板之间，且屏幕承托板、柔性显示面板和支撑板各自的所在的平面相互平行。屏幕承托板在两个相邻支撑板之间的间隙的相对位置处设有刚度大于周围分区的加强区，该加强区位于至少部分间隙上方，并搭接于该部分间隙两侧的支撑板上。上述电子设备实现相邻两个支撑板对屏幕承托板的整体支撑，改善支撑板在间隙处对屏幕承托板的支撑，进而实现屏幕承托板对柔性显示面板的稳定的支撑。上述电子设备能够提高柔性显示面板在间隙的相对位置处的抗冲击能力，进而保证电子设备使用过程中，柔性显示面板的平整度及稳定性，提升用户体验感。
在本申请的第一方面提供了一种电子设备，其中电子设备包括可折叠的屏幕承托板、柔性显示面板和支撑板，支撑板包括第一支撑板、第二支撑板和第三支撑板；屏幕承托板设置于柔性显示面板和支撑板之间；当电子设备处于展平态时，第一支撑板、第二支撑板和第三支撑板依次设置方向为第一方向；屏幕承托板包括沿着第一方向依次设置的第一分部、第二分部、第三分部、第四分部和第五分部，其中，第一分部和第五分部的刚度大于第二分部、第三分部和第四分部的刚度；第三分部包括沿着第一方向依次设置的第一分区、第二分区、第三分区、第四分区和第五分区，其中，第一分区、第三分区和第五分区的刚度小于第二分区和第四分区的刚度；当电子设备处于折叠态时，第一分部和第五分部相对设置，第二分部、第三分部和第四分部处于弯折状态；第一支撑板、第二支撑板和第三支撑板围设形成容纳空间，至少部分的屏幕承托板和至少部分的柔性显示面板的设于容纳空间；当电子设备处于展平态时，第一支撑板、第二支撑板以及第一支撑板和第二支撑板之间的第一间隙在屏幕承托板的板面上的正投影分别至少部分位于第二分区所在的区域，第二支撑板、第三支撑板以及第二支撑板和第三支撑板之间的第 二间隙在屏幕承托板的板面上的正投影分别至少部分位于第四分区所在的区域。
其中，刚度是指材料或结构在受力时抵抗弹性变形的能力。刚度表征的是材料或结构弹性变形难易程度。材料的刚度通常用弹性模量来衡量。在宏观弹性范围内，刚度是零件荷载与位移成正比的比例系数，即引起单位位移所需的力。刚度越高，则说明材料或结构的抵抗弹性变形的能力越高，也即材料或结构越不易变形；刚度越低，则说明材料或结构的抵抗弹性变形的能力越低，也即材料或结构越容易变形。分部的刚度可以理解为整个分部的平均刚度，同理，分区的刚度可以理解为整个分区的平均刚度。刚度与材料或结构的材质、实体体积以及具体结构形态相关。屏幕承托板的板面是指屏幕承托板与柔性显示屏出光面平行的表面。当电子设备处于展平态时，屏幕承托板的板面为屏幕承托板上与柔性显示屏出光面平行的表面，该表面为平面。可以理解，本申请中的平面是指平整度在一定范围内的平面，并非一定是绝对平整的面。
即在本申请的实现方式中，当电子设备处于展平态时，第一支撑板在屏幕承托板的板面上的正投影与第二分区所在的区域至少部分重叠，也即第一支撑板在屏幕承托板的板面上的正投影至少局部的与第二分区所在的区域重叠。第二支撑板在屏幕承托板的板面上的正投影与第二分区所在的区域至少部分重叠，也即第二支撑板在屏幕承托板的板面上的正投影至少局部的与第二分区所在的区域重叠。第一间隙在屏幕承托板的板面上的正投影与第二分区所在的区域至少部分重叠，也即第一间隙在屏幕承托板的板面上的正投影至少局部的与第二分区所在的区域重叠。同理，第二支撑板、第三支撑板以及第二支撑板和第三支撑板之间的第二间隙与第四分区具有相似的相对位置关系。
换言之，当电子设备处于展平态时，第二分区的一部分搭接于第一支撑板上，第二分区的另一部分搭接于第二支撑板上，第二分区的再一部分覆设于第一支撑板与第二支撑板之间的第一间隙上。同理，第四分区的一部分搭接于第二支撑板上，第四分区的另一部分搭接于第三支撑板上，第四分区的再一部分覆设于第二支撑板与第三支撑板之间的第二间隙上。
除此之外，第二分区的一部分至少搭接于第一支撑板上的局部区域，第二分区的另一部分至少搭接于第二支撑板上的局部区域，第二分区的再一部分至少覆设于第一支撑板与第二支撑板之间的第一间隙上的局部区域。同理，第四分区的一部分至少搭接于第二支撑板上的局部区域，第四分区的另一部分至少搭接于第三支撑板上的局部区域，第四分区的再一部分至少覆设于第二支撑板与第三支撑板之间的第二间隙上的局部区域。
在本申请的可能实现方式中，当第二分区包括两个或者两个以上相对分开的子分区时，上述对第二分区的描述即为针对每个子分区的描述。同理，当第四分区包括两个或者两个以上相对分开的子分区时，上述对第四分区的描述即为针对每个子分区的描述。
上述屏幕承托板在支撑板两两相邻的间隙处设有刚度较高的分区，通过刚度较高的分区对应支撑支撑板两两相邻的间隙上方的柔性显示面板，具体地，例如，刚度较高的分区的两侧搭设或者局部搭设于相邻的两个支撑板上，形成屏幕承托板对柔性显示面板整体、稳定地支撑，提高了屏幕承托板在间隙位置处对柔性显示面板的支撑强度，也即提高了柔性显示面板的抗冲击性，进而能够避免柔性显示面板平展态时弯折变形，进而避免柔性显示面板在与支撑板之间的间隙相对的位置处出现失效、冲击和黑斑等缺陷。基于此，上述屏幕承托板能够提升用户使用体验，以及延长电子设备的使用寿命。
在一种可能的实现方式中，屏幕承托板与柔性显示面板通过胶层粘接固定，屏幕承托板与柔性显示面板之间的胶层，可以是连续的整面胶层，也可以是点断式胶层，还可以是具有镂空区域的胶层。
在上述第一方面一种可能的实现方式中，第二分部和第四分部的刚度大于第三分部的刚度，第一分 区、第三分区和第五分区的刚度小于第二分部和第四分部的刚度。可以理解，第二分区、第四分区的刚度与第二分部、第四分部的刚度并不做具体的限定，只需保证综合考虑第一分区、第二分区、第三分区、第四分区和第五分区的第三分部的刚度小于第二分部和第四分部的刚度即可。
上述电子设备中，第二分部和第四分部的刚度大于第三分部，以使得电子设备处于折叠态时，容纳空间呈现出靠近第一分部和第五分部的一端的尺寸较小，靠近第三分部的一端尺寸较大的形态。第一分区、第三分区和第五分区的刚度小于第二分部和第四分部的刚度。通过第一分区、第三分区和第五分区的刚度小于第二分部和第四分部的刚度，能够在第二分区和第四分区刚度较大的情况下，实现第三分部的平均刚度低于第二分部和第四分部的刚度。
在上述第一方面一种可能的实现方式中，当电子设备处于展平态时，第一间隙在屏幕承托板的板面上的正投影位于第二分区所在的区域内，第二间隙在屏幕承托板的板面上的正投影位于第四分区所在的区域内。
即在本申请的实现方式中，屏幕承托板的第二分区能够全部覆盖第一支撑板和第二支撑板之间的第一间隙，屏幕承托板的第四分区能够全部覆盖第二支撑板和第三支撑板之间的第二间隙。
上述电子设备，一方面实现了第二分区对第一间隙的全覆盖，以及第四分区对第二间隙的全覆盖，另一方面，第二分区和第四分区为贯穿屏幕承托板的分区，提高了屏幕承托板在弯折方向上可弯折性能的均衡性。
在上述第一方面一种可能的实现方式中，当电子设备处于展平态时，第一间隙中延伸方向与第一方向垂直的部分在屏幕承托板的板面上的正投影位于第二分区所在的区域内，第二间隙中延伸方向与第一方向垂直的部分在屏幕承托板的板面上的正投影位于第四分区所在的区域内。
在上述第一方面一种可能的实现方式中，当电子设备处于展平态时，第二分区和第四分区为矩形区域，矩形区域沿着垂直于第一方向的方向贯穿屏幕承托板。
即在本申请的实现方式中，第二分区和第四分区沿着垂直于第一方向的方向贯穿屏幕承托板的矩形区域。上述电子设备，第二分区和/或第四分区设置为若干个沿着第二方向贯通屏幕承托板的分区，保证了沿着第一方向同一位置处屏幕承托板的结构的一致性，同时便于将折叠状态时产生的应力沿着第二方向扩散至屏幕承托板的两端，尽可能避免应力残存。因此上述实现方式保证了屏幕承托板可弯折性能的一致性，避免了折叠状态下屏幕承托板沿着第二方向上形成局部凸起，进一步延长了屏幕承托板和柔性显示面板的使用寿命。
在上述第一方面一种可能的实现方式中，第二分区和第四分区在第一方向上的尺寸范围为0.5mm～2mm。
即在本申请的实现方式中，第二分区在手机的长度方向上的尺寸范围为0.5mm～2mm。该尺寸范围内的第二分区能够在保证第三分部的可弯折性的情况下稳定的支撑于第一间隙两侧的第一支撑板和第二支撑板的稳定支撑。同理，第四分区在手机的长度方向上的尺寸范围为0.5mm～2mm。该尺寸范围内的第四分区能够在保证第三分部的可弯折性的情况下稳定的支撑于第二间隙两侧的第二支撑板和第三支撑板的稳定支撑。
在上述第一方面一种可能的实现方式中，第一分区、第二分区、第三分区、第四分区和第五分区材质相同，第二分区和第四分区中的至少部分区域的厚度小于第一分区、第三分区和第五分区的厚度。
即在本申请的实现方式中，在第三分部中第一分区、第二分区、第三分区、第四分区和第五分区的材质相同的情况下，对第二分区与第四分区进行减薄处理，通过减小第二分区和第四分区的厚度以适当 降低第二分区和第四分区的刚度，进而提高第二分区和第四分区的可弯折性。可以理解的是，减薄处理后的第二分区和第四分区的刚度依然高于第一分区、第三分区和第五分区。
除此之外，为了避免在屏幕承托板和柔性显示面板之间形成虚位感，在第二分区和第四分区在靠近支撑板的一侧进行减薄处理。
上述电子设备中，通过减小第二分区和第四分区的厚度以适当提高第二分区和第四分区的可弯折性，也即在保证第二分区和第四分区的支撑稳定性的同时提高第二分区和第四分区的可弯折性。
在上述第一方面一种可能的实现方式中，第二分区和第四分区上均开设有凹槽，凹槽沿第二方向延伸；当电子设备处于展平态，第二方向平行于屏幕承托板的板面，第二方向垂直于第一方向。
其中，屏幕承托板的材质为钛合金、铝合金和不锈钢中的至少一种时，上述电子设备可以通过刻蚀在第二分区和第四分区上进行开设槽体。
即在本申请的实现方式中，第二分区和第四分区上均开设有沿着第二方向凹槽，其中第二方向平行于电子设备处于展平态时的屏幕承托板的板面，并与第一方向垂直。可以理解，同一屏幕承托板上第二分区的至少一部分和第四分区的至少一部分开设有凹槽，其他部分上未开设有凹槽，例如，第二分区沿着第一方向靠近第一支撑板和第二支撑板的两侧保留原来的厚度，两侧之间的中间区域开设凹槽。或者，同一屏幕承托板上的第二分区的所有部分和第四分区的所有部分均开设有凹槽。第二分区中凹槽底部的厚度即为第二分区中的至少部分区域的厚度，第四分区中凹槽底部的厚度即为第四分区中的至少部分区域的厚度。上述电子设备中，在第二分区和第四分区上开设沿着第二方向延伸的凹槽，结构简单，成型难度较低。
在上述第一方面一种可能的实现方式中，凹槽开口与柔性显示面板的出光面相背。
上述电子设备，凹槽的槽口朝向支撑板，槽底朝向柔性显示面板，尽可能避免用户触摸柔性显示面板时的虚位感，提升用户体验。
在上述第一方面一种可能的实现方式中，凹槽包括第一凹槽和第二凹槽，第一凹槽和第二凹槽间设有加强筋，加强筋沿第二方向延伸。上述电子设备能够进一步提高第二分区和第四分区的刚度和强度。
可以理解，当凹槽沿着第一方向的整体尺寸较大时，例如，当凹槽沿着第一方向的尺寸大于时，凹槽包括第一凹槽和第二凹槽，其中第一凹槽和第二凹槽之间设置加强筋。
在上述第一方面一种可能的实现方式中，第二分区和第四分区中凹槽在电子设备厚度方向上的尺寸范围为0.03mm～0.15mm。
即在本申请的实现方式中，第二分区中凹槽在电子设备厚度方向上的尺寸范围为0.5mm～2mm。该尺寸范围内的第二分区能够在保证第三分部的可弯折性的情况下稳定的支撑于第一间隙两侧的第一支撑板和第二支撑板的稳定支撑。同理，第四分区中凹槽在电子设备厚度方向上的尺寸范围为0.5mm～2mm。该尺寸范围内的第四分区能够在保证第三分部的可弯折性的情况下稳定的支撑于第二间隙两侧的第二支撑板和第三支撑板。
在上述第一方面一种可能的实现方式中，第一分区、第二分区、第三分区、第四分区和第五分区材质相同，第二分区和第四分区开设有多个孔结构。可以理解，孔结构可以为通孔或者盲孔。
在一种实现方式中，孔结构在屏幕承托板的板面内的最大一维尺寸小于最小触点区域的最小一维尺寸。其中，最小触点区域可以是基于大数据获取的用于表征用户最小触摸面积或者最小单向触摸尺寸时的触摸区域，例如可以是用户手指触摸屏幕的最小区域。
在上述第一方面一种可能的实现方式中，孔结构平行于屏幕承托板的板面的截面的形状为圆形、方 形、跑道形和哑铃形中的任意一种。
在一种实现方式中，第二分区和第四分区中的凹槽、加强筋和孔结构可以根据弯折需求和支撑需求任意搭配，也即，第二分区和第四分区可以开设凹槽，或者，第二分区和第四分区可以在凹槽内开设孔结构，或者，第二分区和第四分区可以直接开设孔结构，或者，第二分区和第四分区可以在凹槽内设置加强筋，或者，将某一分区划分为多个子分区，多个子分区可以分别采用上述任意一种形式。
在其他一种实现方式中，第二分区和第四分区中的凹槽、加强筋和孔结构可以根据相邻两个支撑板之间的间隙的宽度搭配。例如，相邻两个支撑板之间的间隙越宽，则凹槽的槽深越小，加强筋的布局得更密，孔结构的孔径越小，孔结构所覆盖的比率越小。
在另外一些实现方式中，第二分区和第四分区中的凹槽、加强筋和孔结构根据相邻两个支撑板之间的间隙的轮廓形状搭配。
在上述第一方面一种可能的实现方式中，屏幕承托板的材质为钛合金、铝合金和不锈钢中的至少一种。
在一种实现方式中，屏幕承托板的加工工艺为刻蚀。例如，利用刻蚀工艺刻蚀屏幕承托板上的第二弯折槽、凹槽、加强筋、孔结构、长条形通孔和第三弯折槽。
在上述第一方面一种可能的实现方式中，第一分区、第三分区和第五分区开设有长条形通孔，单个长条形通孔沿与第一方向垂直的方向延伸，多个长条形通孔沿第一方向相邻相互交错排列；第二分部的第一表面开设有第一弯折槽，第二分部的第一表面与柔性显示面板的出光面相背，第四分部的第一表面开设有第三弯折槽，第四分部的第一表面与柔性显示面板的出光面相背。
在上述第一方面一种可能的实现方式中，电子设备还包括第一中框、第二中框和弯折机构；其中，第一分部与第一中框固定连接，第五分部与第二中框固定相连，第一中框和第二中框分别和弯折机构固定相连；第一支撑板转动连接于弯折机构，并能够相对弯折机构滑动，第二支撑板转动连接于弯折机构，并能够相对于弯折机构滑动；电子设备处于展平态时，第二支撑板与弯折机构中的外壳的最远距离为第一距离，电子设备处于折叠态时，第二支撑板与弯折机构中外壳的最远距离为第二距离，第一距离大于第二距离；电子设备处于展平态时，第一支撑板的上表面、第二支撑板的上表面、第三支撑板的上表面、第一中框的上表面和第二中框的上表面处于同一平面。其中，第二支撑板与弯折机构中的外壳的最远距离是指第二支撑板上的任意一点与外壳上任意一点在电子设备的厚度方向上的最大距离。
上述电子设备中，第一支撑板、第二支撑板和第三支撑板能够自动避让，以形成容纳柔性显示面板的容纳空间。容纳空间邻近第二支撑板的区域的尺寸较大，且远离第二支撑板的区域的尺寸较小，这样弯折机构折叠后，对应设置于弯折机构的柔性显示面板的折痕不明显，可以避免柔性显示面板在弯折的过程中出现损伤。弯折机构展开的过程中，第一支撑板远离第二支撑板的一端朝远离轴座的方向运动，第三支撑板远离第二支撑板的一端朝远离轴座的方向运动。当电子设备完全处于展平态时，第一支撑板的支撑面、第二支撑板的支撑面与第三支撑板的支撑面齐平，以使屏幕承托板和柔性显示面板呈展平态。基于此，能够在用户进行触控操作时，第一支撑板、第二支撑板和第三支撑板能够为柔性显示面板提供平整的强力支撑，提高用户的操作体验及观看体验。
在上述第一方面一种可能的实现方式中，电子设备处于折叠态时，第二分部的至少一部分、第三分部和第四分部的至少一部分设于容纳空间内。
在上述第一方面一种可能的实现方式中，屏幕承托板还包括设于第二分部和第三分部之间的第六分部，以及设于第三分部和第四分部之间的第七分部；第一支撑板和第六分部的至少一部分相连，第三支 撑板与第七分部的至少一部分相连。在电子设备处于折叠态时，第二分部、第三分部和第四分部分别弯折，且第二分部、第六分部、第三分部、第七分部和第四分部共同形成特定形状。
在一种可能的实现方式中，屏幕承托板的第六分部可以固定连接至第一支撑板的支撑面的部分区域，例如可以通过胶层粘接固定。第七分部可以固定连接至第三支撑板的支撑面的部分区域，例如可以通过胶层粘接固定。
可以理解，上述第一分部与第一中框之间的胶层、第六分部与第一支撑板之间的胶层、第七分部与第三支撑板之间的胶层、第五分部与第二中框之间的胶层，可以是连续的整面胶层，也可以是点断式胶层，还可以是具有镂空区域的胶层。
在本申请的第二方面提供了一种可折叠的屏幕承托板，其中屏幕承托板可应用于包括柔性显示面板和支撑板的电子设备。屏幕承托板包括沿着第三方向依次布置的第一分部、第二分部、第三分部、第四分部和第五分部，第三分部包括沿着第三方向依次设置的第一分区、第二分区、第三分区、第四分区和第五分区，其中，第一分区、第三分区和第五分区的刚度小于第二分区和第四分区的刚度。
在上述第二方面一种可能的实现方式中，第一分区、第三分区和第五分区的刚度小于第二分部和第四分部的刚度。
在上述第二方面一种可能的实现方式中，当电子设备处于展平态时，第一间隙在屏幕承托板的板面上的正投影位于第二分区所在的区域内，第二间隙在屏幕承托板的板面上的正投影位于第四分区所在的区域内。
在上述第二方面一种可能的实现方式中，第二分区和第四分区在第三方向上的尺寸范围为0.5mm～2mm。
在上述第二方面一种可能的实现方式中，当电子设备处于展平态时，第二分区和第四分区为矩形区域，矩形区域沿着垂直于第三方向的方向贯穿屏幕承托板。
在上述第二方面一种可能的实现方式中，第一分区、第二分区、第三分区、第四分区和第五分区材质相同，第二分区和第四分区中至少部分区域的厚度小于第一分区、第三分区和第二分区的厚度。
在上述第二方面一种可能的实现方式中，第二分区和第四分区上均开设有凹槽，凹槽沿垂直于第三方向的方向延伸。
在上述第二方面一种可能的实现方式中，凹槽开口与柔性显示面板的出光面相背。
在上述第二方面一种可能的实现方式中，凹槽包括第一凹槽和第二凹槽，第一凹槽和第二凹槽间设有加强筋，加强筋沿垂直于第三方向的方向延伸。
在上述第二方面一种可能的实现方式中，第二分区和第四分区的至少部分区域在电子设备厚度方向上的尺寸范围为0.03mm～0.15mm。
在上述第二方面一种可能的实现方式中，第一分区、第二分区、第三分区、第四分区和第五分区材质相同，第二分区和第四分区开设有多个孔结构。
在上述第二方面一种可能的实现方式中，孔结构平行于屏幕承托板的板面的截面的形状为圆形、方形、跑道形和哑铃形中的任意一种。
在本申请的第三方面提供了一种柔性屏幕组件，包括上述第二面中的任意一种屏幕承托板和柔性显示面板，屏幕承托板设置于柔性显示面板的靠近支撑板的表面，并与柔性显示面板相连。
附图说明
图1(a)示出了一些实施例中电子设备1'在展平态时的立体图；
图1(b)示出了一些实施例中电子设备1'在展平态时的爆炸图；
图1(c)示出了一些实施例中电子设备1'在展平态时沿图1(a)中M'-M'剖面的剖视图；
图1(d)示出了图1(c)中A区域的局部放大图；
图1(e)示出了一些实施例中电子设备1'在折叠态时的立体图；
图1(f)示出了一些实施例中电子设备1'沿图1(e)中N'-N'剖面的剖视图；
图1(g)示出了图1(f)中B区域的局部放大图；
图2(a)示出了一些实施例中屏幕承托板10'折叠态时的立体图；
图2(b)示出了一些实施例中屏幕承托板10'和支撑板30'在展平态时的立体图；
图3(a)示出了本申请一些实施例中电子设备1在展平态时的立体图；
图3(b)示出了本申请一些实施例中电子设备1在展平态时的爆炸图；
图3(c)示出了本申请一些实施例中支撑板30的立体图；
图3(d)示出了本申请一些实施例中电子设备1沿图3(a)中M-M剖面的剖视图；
图3(e)示出了图3(d)中C区域的局部放大图；
图4(a)示出了本申请一些实施例中电子设备1在折叠态时的立体图；
图4(b)示出了图4(a)中屏幕承托板10、柔性显示面板20和支撑板30的沿图4(a)中N-N剖面的剖视图；
图5(a)示出了本申请一些实施例中支撑板30和弯折机构60的爆炸图；
图5(b)示出了本申请一些实施例中电子设备1处于折叠态时，支撑板30和弯折机构60沿着图4(b)中N-N剖面的剖视图；
图5(c)示出了本申请一些实施例中电子设备1处于展平态时，支撑板30和弯折机构60沿着图4(a)中N-N剖面的剖视图；
图5(d)示出了本申请一些实施例中电子设备1中屏幕承托板10的刚度示意图；
图6(a)示出了本申请一些实施例中图3(b)中D区域的屏幕承托板10展平态时与间隙投影的对比图；
图6(b)示出了图6(a)中E区域的局部放大图；
图6(c)示出了本申请一些实施例中第二分部200与柔性显示面板20之间的搭接示意图；
图6(d)示出了本申请另外一些实施例中第二分部200与柔性显示面板20之间的搭接示意图；
图6(e)示出了本申请另外一些实施例中图3(b)中D区域的屏幕承托板10展平态时与间隙投影的对比图；
图6(f)示出了本申请另外一些实施例中图3(b)中D区域的屏幕承托板10展平态时与间隙投影的俯视图；
图7(a)示出了本申请一些实施例中屏幕承托板10中第三分部300的示意图；
图7(b)示出了本申请一些实施例中屏幕承托板10中支撑板30的示意图；
图7(c)示出了本申请其他一些实施例中屏幕承托板10中第三分部300的示意图；
图7(d)示出了本申请另外一些实施例中屏幕承托板10中第三分部300的示意图；
图7(e)示出了本申请再一些实施例中屏幕承托板10中第三分部300的示意图；
图7(f)示出了本申请再一些实施例中屏幕承托板10中第三分部300的示意图；
图8(a)示出了本申请其他一些实施例中屏幕承托板10在E区域的局部放大图；
图8(b)示出了本申请一些实施例中图8(a)中F 1区域的局部放大图；
图9(a)示出了本申请另外一些实施例中屏幕承托板10在E区域的局部放大图；
图9(b)示出了本申请一些实施例中图9(a)中F 2区域的局部放大图；
图10(a)示出了本申请再一些实施例中屏幕承托板10在E区域的局部放大图；
图10(b)示出了本申请一些实施例中图10(a)中F 3区域的局部放大图；
图10(c)示出了本申请一些实施例中孔结构380的圆形截面381；
图10(d)示出了本申请一些实施例中孔结构380的多边形截面382；
图10(e)示出了本申请一些实施例中孔结构380的圆角矩形截面383；
图10(f)示出了本申请一些实施例中孔结构380的跑道形截面384；
图10(g)示出了本申请一些实施例中孔结构380的哑铃形截面385；
图10(h)示出了本申请一些实施例中孔结构380的跑道哑铃复合形截面386；
图11(a)示出了本申请一些实施例中屏幕承托板10中第三分部300的立体示意图；
图11(b)示出了本申请一些实施例中图中G区域支撑板30的立体示意图；
图11(c)示出了本申请一些实施例中图中G区域中第三分部300和支撑板30的立体示意图；
图12示出了本申请另一些实施例中屏幕承托板10中第三分部300和支撑板30的立体示意图。
附图标记说明：S 1-第一方向；S 2-第二方向；S 3-厚度方向；1'-电子设备；2'-柔性屏幕组件；10'-屏幕承托板；10m'-屏幕承托板正面；10n'-屏幕承托板背面；100'-第一分部；200'-第二分部；290'-长条形通孔；300'-第三分部；400'-第四分部；500'-第五分部；20'-柔性显示面板；3'-支撑装置；30'-支撑板；31'-第一支撑板；32'-第二支撑板；33'-第三支撑板；40'-第一中框；50'-第二中框；60'-弯折机构；1-电子设备；2-柔性屏幕组件；10-屏幕承托板；10m-屏幕承托板正面；10n-背屏幕承托板背面；100-第一分部；200-第二分部；210-第二弯折槽；220-虚位；300-第三分部；310-第一分区；320-第二分区；330-第三分区；340-第四分区；350-第五分区；360-凹槽；370-加强筋；380-孔结构；390-长条形通孔；400-第四分部；410-第三弯折槽；500-第五分部；600-第六分部；700-第七分部；20-柔性显示面板；20m-柔性显示面板正面；20n-柔性显示面板背面；30-支撑板；31-第一支撑板；32-第二支撑板；33-第三支撑板；Gap1-第一间隙；Gap2-第二间隙；g 1-投影；g 11-第一段投影；g 12-第二段投影；g 13-第三段投影；g 2-投影；g 21-第一段投影；g 22-第二段投影；g 23-第三段投影；40-第一中框；50-第二中框；60-弯折机构；61-轴座；62-第一支架；63-第二支架；64-同步装置；65-第一同步臂；66-第二同步臂；67-滑块；68-外壳。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请的实施方式作进一步地详细描述。
本申请提供一种电子设备，电子设备可以是手机、平板电脑、笔记本电脑、可穿戴设备等可折叠的电子产品。当电子设备中的屏幕承托板在折叠态下，支撑板形成的容纳空间的一端为小尺寸，另一端为大尺寸时，支撑板的数量为3个，下面将以电子设备是手机，且电子设备中的屏幕承托板在折叠态下的形状为上文描述形态为例进行说明。此外，屏幕承托板、柔性屏幕组件和电子设备被折叠后所处的状态称之为折叠态，屏幕承托板、柔性屏幕组件和电子设备被展平后所处的状态称之为展平态。
图1(a)为一些实施例中电子设备1'在展平态时的立体图。图1(b)为一些实施例中电子设备1'在展平态时的爆炸图。图1(c)为一些实施例中电子设备1'在展平态时沿图1(a)中M'-M'剖面的剖视图。图1(d)为图1(c)中A区域的局部放大图。图1(e)为一些实施例中电子设备1'在折叠态时的立体图。图1(f)为一些实施例中电子设备1'在折叠态时沿图1(e)中N'-N'剖面的剖视图。图1(g)为图1(f)中B区域的局部放大图。
为了便于描述，现定义出屏幕承托板10'的第一方向S 1、第二方向S 2、厚度方向S 3、正面和背面。可以理解，在展平态时，第一方向S 1为第一支撑板31'、第二支撑板32'和第三支撑板33'的并列布置的方向。由图1(a)可知，第一方向S 1与屏幕承托板10'的板面平行，第二方向S 2与屏幕承托板10'的板面平行，且第一方向S 1和第二方向S 2相交。一般而言，第一方向S 1与第二方向S 2相互垂直。厚度方向S 3为电子设备1'装配后，正常放置时，电子设备1'底面指向电子设备1'顶面的方向。对于柔性显示面板20'而言，柔性显示面板正面为柔性显示面板20'的出光面，柔性显示面板背面为与柔性显示面板正面相反的表面。对于屏幕承托板10'而言，屏幕承托板正面为靠近柔性显示面板背面的表面，屏幕承托板背面为与屏幕承托板正面相反的表面。
如图1(b)所示，电子设备1'为折叠式设备。电子设备1'包括柔性屏幕组件2'和支撑装置3'。其中，柔性屏幕组件2'包括屏幕承托板10'和柔性显示面板20'，屏幕承托板10'设置于柔性显示面板背面。屏幕承托板10'包括沿着第一方向S 1依次分布的第一分部100'、第二分部200'、第三分部300'、第四分部400'和第五分部500'。支撑装置3'包括支撑板30'、第一中框40'、第二中框50'和弯折机构60'。其中，支撑板30'包括第一支撑板31'、第二支撑板32'和第三支撑板33'。当电子设备1'处于展平态时，第一支撑板31'、第二支撑板32'和第三支撑板33'沿着第一方向S 1依次设置。
如图1(d)所示，当电子设备1'处于展平态时，弯折机构60'位于第一中框40'和第二中框50'之间，并分别与第一中框40'和第二中框50'固定相连。第一支撑板31'、第二支撑板32'和第三支撑板33'设于弯折机构60'上，且第一支撑板31'的上表面、第二支撑板32'的上表面、第三支撑板33'的上表面、第一中框40'的上表面和第二中框50'的上表面处于同一平面内。其中，第一支撑板31'的上表面、第二支撑板32'的上表面、第三支撑板33'的上表面、第一中框40'的上表面和第二中框50'的上表面均为靠近屏幕承托板10'的表面。可以理解，多个表面处于同一平面内是指多个表面近似平行，且多个表面基本处于同一个平面。也即多个表面之间可以具有一定范围内的夹角，当多个表面为相互平行的表面时，多个表面之间可以具有一定范围内的间距。
第一支撑板31'与第一中框40'相连，第二支撑板32'与弯折机构60'相连，第三支撑板33'与第二中框50'相连。屏幕承托板10'的屏幕承托板背面分别与第一中框40'、第二中框50'、第一支撑板31'和第三支撑板33'相连。第一支撑板31'用于承托第二分部200'，第二支撑板32'用于承托第三分部300'，第三支撑板33'用于承托,第四分部400'。屏幕承托板10'用于承托柔性显示面板20'。基于此，第一中框40'、第二中框50'和弯折机构60'能够带动屏幕承托板10'和柔性显示面板20'折叠或者打开。
结合图1(f)和图1(g)可知，弯折机构60'发生形变时，屏幕承托板10'、柔性显示面板20'、第一中框40'和第二中框50'处于折叠态。具体地，屏幕承托板10'中的第二分部200'、第三分部300'和第四分部400'绕着与第二方向S 2平行的一轴线弯折。屏幕承托板10'位于柔性显示面板20'外侧，以支撑柔性显示面板20'。第一支撑板31'、第二支撑板32'和第三支撑板33'呈三边相互分离的三角形分布，并共同形成容纳空间(未标示)，屏幕承托板10'的至少一部分设置于该容纳空间内。第一中框40'位于第一支撑板31'外侧，弯折机构60'位于第二支撑板32'外侧，第二中框50'位于第三支撑板33'外侧。
图2(a)为一些实施例中屏幕承托板10'折叠态时的立体图。如图2(a)所示，柔性显示面板20'的折叠后的结构中，第三分部300'的曲率半径较小，也即第三分部300'应当具有良好的可弯折性。屏幕承托板10'包括位于两侧的屏幕承托板正面10m'和屏幕承托板背面10n'。为了提高第三分部300'的可弯折性，第三分部300'上开设沿着第二方向S 2延伸的长条形通孔390'。其中，长条形通孔390'连通屏幕承托板正面10m'和屏幕承托板背面10n'。上述屏幕承托板10'，通过长条形通孔390'在第一方向S 1上降低屏幕承托板10'的刚性，提高屏幕承托板10'沿着第一方向S 1的可弯折性，进而满足电子设备1'的折叠功能。
图2(b)为一些实施例中屏幕承托板10'和支撑板30'展平态时的立体图。结合图1(a)、图1(d)和图2(b)所示，当处于展平态时，第一支撑板31'、第二支撑板32'和第三支撑板33'依次并列分布于第二分部200'、第三分部300'和第四分部400'下方，且第一支撑板31'和第二支撑板32'之间的第一间隙Gap1'，以及第二支撑板32'和第三支撑板33'之间的第二间隙Gap2'均位于第三分部300'的下方。一方面，第一支撑板31'、第二支撑板32'和第三支撑板33'为沿着第二方向S 2相互分离的个体，使得支撑板30'在间隙位置处对柔性显示面板20'的支撑效果较差，另一方面，第三分部300'存在有沿着第二方向S 2延伸的长条形通孔390'，使得屏幕承托板10'在间隙位置处对柔性显示面板20'的支撑效果较差。基于此，支撑板30'和屏幕承托板10'均无法有效支撑相邻两支撑板30'之间的间隙上方的柔性显示面板20'。当用户触摸间隙上方的柔性显示面板20'时，柔性显示面板20'容易弯折变形，可能会导致柔性显示面板20'出现失效、冲击和黑斑等缺陷，影响用户使用体验，以及缩短电子设备1'的使用寿命。
为解决上述问题，本申请还提供一种屏幕承托板，应用于柔性显示面板与支撑板之间，屏幕承托板包括沿着第一方向依次设置的第一分部、第二分部、第三分部、第四分部和第五分部，其中，第三分部包括第一分区、第二分区、第三分区、第四分区和第五分区。第一支撑板、第二支撑板和第三支撑板也沿着第一方向依次设置。第二分部、第三分部和第四分部的刚度小于第一分部和第五分部的刚度，第一分区、第三分区和第五分区的刚度小于第二分区和第四分区的刚度。在折叠态时，第二分部、第三分部和第四分部绕着与第二方向平行的轴线弯折。屏幕承托板被展平后，第一分区与第一支撑板对应，第二分区与第一支撑板和第二支撑板之间的间隙对应，第三分区与第二支撑板对应，第四分区与第二支撑板和第三支撑板之间的间隙相对应，第五分区与第三支撑板相对应。对应是指分区设于间隙上方，且展平状态时，分区搭接于间隙两侧的支撑板上，以使得间隙两侧的支撑板通过支撑分区，实现支撑板对整个第三分部的连贯支撑。可以理解，分部的刚度可以理解为整个分部的平均刚度，同理，分区的刚度可以理解为整个分区的平均刚度。
其中，刚度是指材料或结构在受力时抵抗弹性变形的能力。刚度表征的是材料或结构弹性变形难易程度。材料的刚度通常用弹性模量E来衡量。在宏观弹性范围内，刚度是零件荷载与位移成正比的比例系数，即引起单位位移所需的力。刚度越高，则说明材料或结构的抵抗弹性变形的能力越高，也即材料或结构越不易变形；刚度越低，则说明材料或结构的抵抗弹性变形的能力越低，也即材料或结构越容易变形。可以理解，刚度可以与材料或结构的材质、实体体积以及具体结构形态相关。除此之外，刚度可以与材料或结构的成型工艺以及热处理工艺相关。屏幕承托板的板面是指屏幕承托板与柔性显示屏出光面平行的表面。当电子设备处于展平态时，屏幕承托板的板面为屏幕承托板上与柔性显示屏出光面平行的表面，该表面为平面。可以理解，本申请中的平面是指平整度在一定范围内的平面，并非一定是绝对平整的面。
在一种实现方式中，刚度可以通过单位体积内材料或结构实际所占的体积来表征。例如，单位体积 内材料或结构实际所占的体积越大，也就是说，单位体积内材料或结构的镂空部越少，则材料或结构的刚度越高，换言之，结构的可弯折性越低。反之，单位体积内材料或结构实际所占的体积越小，也就是说，单位体积内材料或结构的镂空部越多，则材料或结构的刚度越低，换言之，结构的可弯折性越高。结构的平均刚度也即为就整个结构而言，单位体积内材料或结构实际所占的体积。其中，材料或结构的单位体积内材料实际所占的体积可以通过在材料或结构上开设减薄结构、镂空结构或者多孔结构来调整。可以理解，多孔结构可以是设于材料或结构表面的与外部连通的多孔结构，还可以是设于结构内部的与外部隔绝的多孔结构。
在另外一种实现方式中，刚度还可以材质来表征。例如韧性较高的材质，其刚度较差，而韧性较差材质，其刚度较高。
可以理解，上述两种仅为刚度的两种示例，仅为能够区分结构刚度的两种形式，任何能够实现两种结构可弯折性差异，或者刚度差异的技术方案均在本申请的保护范围之内，本申请不作具体限定。
上述屏幕承托板在支撑板两两相邻的间隙处设有刚度较高的分区，通过刚度较高的分区对应支撑支撑板两两相邻的间隙上方的柔性显示面板，具体地，例如，刚度较高的分区的两侧搭设或者局部搭设于相邻的两个支撑板上，形成屏幕承托板对柔性显示面板整体、稳定地支撑，提高了屏幕承托板在间隙位置处对柔性显示面板的支撑强度，也即提高了柔性显示面板的抗冲击性，进而能够避免柔性显示面板平展态时弯折变形，进而避免柔性显示面板在与支撑板之间的间隙相对的位置处出现失效、冲击和黑斑等缺陷。基于此，上述屏幕承托板能够提升用户使用体验，以及延长电子设备的使用寿命。
下面将继续以电子设备中的屏幕承托板在折叠态时，容纳空间靠近第一分部100和第五分部500的一端的尺寸较小，容纳空间靠近第三分部300的一端尺寸较大为例，结合附图详细说明本申请中的屏幕承托板、柔性屏幕组件和电子设备的具体结构。
图3(a)为本申请一些实施例中电子设备1在展平态时的立体图。图3(b)为本申请一些实施例中电子设备1展平态时的爆炸图。如图3(b)所示，本申请提供一种电子设备1包括柔性屏幕组件2和支撑装置3。其中，支撑装置3用于承载柔性屏幕组件2，并能够与柔性屏幕组件2同步折叠或者打开。
柔性屏幕组件2包括屏幕承托板10和柔性显示面板20，屏幕承托板10设置于柔性显示面板20的背面。屏幕承托板10包括沿着第一方向S 1依次设置的第一分部100、第二分部200、第三分部300、第四分部400和第五分部500。
支撑装置3包括支撑板30、第一中框40、第二中框50和弯折机构60。电子设备1处于展平态时，第一中框40、第二中框50和弯折机构60沿着第一方向S 1依次布置，支撑板30设于弯折机构60的上表面，且支撑板30的上表面与第一中框40的上表面和第二中框50的上表面平齐，也即支撑板30的上表面与第一中框40的上表面和第二中框50的上表面处于同一平面。可以理解，多个表面处于同一平面内是指多个表面近似平行，且多个表面基本处于同一个平面内。也即多个表面之间可以具有一定范围内的夹角，当多个表面为相互平行的表面时，多个表面之间可以具有一定范围内的间距。
柔性屏幕组件2中的屏幕承托板10设于第一中框40、支撑板30和第二中框50的上表面。屏幕承托板10位于柔性显示面板20与支撑板30之间。
具体地，弯折机构60位于第一中框40和第二中框50之间，并分别与第一中框40和第二中框50固定相接。支撑板30包括沿着第一方向S 1依次设置的第一支撑板31、第二支撑板32和第三支撑板33。第一支撑板31与第一中框40活动连接，第二支撑板32与弯折机构60滑动连接，第三支撑板33与第 二中框50活动连接，其中第一支撑板31、第二支撑板32和第三支撑板33与弯折机构60之间的连接方式后续将结合图5(a)和图6(a)进行详细描述，在此不作赘述。屏幕承托板10的屏幕承托板背面10n分别与第一中框40、第二中框50、第一支撑板31和第三支撑板33固定相连。第一支撑板31用于承托第二分部200，第二支撑板32用于承托第三分部300，第三支撑板33用于承托第四分部400，屏幕承托板10用于承托柔性显示面板20。
可以理解，电子设备1处于展平态时，屏幕承托板10、柔性显示面板20、第一中框40、第二中框50和弯折机构60呈展平态。其中，展开态是指两侧电子设备1的延伸方向的夹角大致为180°。例如，展平态下的第一中框40、弯折机构60和第二中框50大致处于同一平面内，也即，第一中框40的延伸方向l 1和第二中框50的延伸方向l 2之间的夹角大致为180°。其中，第一中框40和第二中框50之间的夹角大致为180°是指l 1和l 2之间的夹角可以相对180°存在一些偏差，例如l 1和l 2之间的夹角可以为179°、180°或者181°等。
图3(c)为本申请一些实施例中支撑板30的立体图。图3(d)为本申请一些实施例中电子设备1在展平态时沿图3(a)中M-M剖面的剖视图。图3(e)为图3(d)中C区域的局部放大图。结合图3(c)和图3(e)可知，第一支撑板31具有支撑面31a，第二支撑板32具有支撑面32a，以及第三支撑板33具有支撑面33a。电子设备1处于展平态时，支撑面31a、支撑面32a和支撑面33a与第一中框40的上表面和第二中框50的上表面处于同一平面内。其中多个表面处于同一平面的含义与上文中的多个表面处于同一平面的含义相同，在此不作赘述。如图3(e)所示，第一支撑板31与第二支撑板32之间的第一间隙记为Gap1，第二支撑板32与第三支撑板33之间的第二间隙记为Gap2。
如图3(e)所示，第三分部300包括沿着第一方向S 1依次设置的第一分区310、第二分区320、第三分区330、第四分区340和第五分区350。其中，第一分区310与第一支撑板31相对应，第三分区330与第二支撑板32相对应，第五分区350与第三支撑板33相对应。第二分区320与第一间隙Gap1相对应，第二分区340与第二间隙Gap2相对应。
其中，分区与支撑板相对应是指分区设于支撑板上方，且展平状态时，分区与支撑板接触，以及使得支撑板支撑分区。例如，第一分区310设于第一支撑板31上方，且展平状态时，第一分区310与第一支撑板31相接触，以使得第一支撑板31能够支撑第一分区310。第三分区330设于第二支撑板32上方，且展平状态时，第三分区330与第二支撑板32相接触，以使得第二支撑板32能够支撑第三分区330，第五分区350设于第三支撑板33上方，且展平状态时，第五分区350与第三支撑板33相接触，以使得第三支撑板33能够支撑第五分区350。
分区与两相邻支撑板之间的间隙相对应是指分区设于间隙上方，且展平状态时，分区搭接于间隙两侧的支撑板上，以使得间隙两侧的支撑板通过支撑分区，实现支撑板对整个第三分部300的连贯支撑。其中，分区搭接于间隙两侧的支撑板上可以是分区两侧的边界至少部分搭接于间隙侧部的支撑板上。例如，第二分区320设于第一支撑板31和第二支撑板32之间的第一间隙Gap1的上方，假设第一支撑板31位于第二支撑板32的左侧，第二分区320的左边界全部搭接于第一支撑板31上，第二分区320的右边界全部搭接于第二支撑板32上。再例如，第四分区340设于第二支撑板32和第二支撑板34之间的第二间隙Gap2的上方，假设第二支撑板32位于第三支撑板33的左侧，第二分区340的左边界的至少一部分搭接于第二支撑板32上，第四分区340的右边界的至少一部分搭接于第三支撑板33上。除此之外，同一分区内的两条边界可根据至少一部分搭接于支撑板和全部搭接于支撑板的两种搭接形式任意组合。
结合3(b)和图3(e)可知，屏幕承托板10位于第一支撑板31、第二支撑板32、第三支撑板33、第一中框40和第二中框50上方，且第一支撑板31的支撑面31a、第二支撑板32的支撑面32a和第三支撑板33的支撑面33a与屏幕承托板10的屏幕承托板背面10n相对。例如，第二分部200位于第一支撑板31和第一中框40上方，第三分部300位于第一支撑板31、第二支撑板32和第三支撑板33上方，第四分部400位于第三支撑板33和第二中框50上方。可以理解，一部件位于另一部件上方，可以理解为一部件的背面与另一部件的正面相对，例如，柔性显示面板20位于屏幕承托板10的上方，柔性显示面板20的柔性显示面板背面20n与屏幕承托板10的屏幕承托板正面10m相对。
图4(a)为本申请一些实施例中电子设备1在折叠态时的立体图。图4(b)为图4(a)中屏幕承托板10、柔性显示面板20和支撑板30的沿着图4(a)中N-N剖面的剖视图。如图4(b)所示，电子设备1处于折叠态时，弯折机构60、屏幕承托板10和柔性显示面板20均处于折叠态，第一中框40和第二中框50处于对相设置状态。在折叠态时，柔性显示面板20弯折，屏幕承托板10中的第二分部200、第三分部300和第四分部400沿着与第二方向S 2平行的轴线弯折，第一分部100远离第二分部200的一端100a靠近第五分部500远离第四分部400的一端500a，使得第一分部100和第五分部500相对设置。第二分部200靠近第一分部100的一端200a与第四分部400靠近第五分部500的一端400a之间的距离d 1，小于第三分部300两端300a和300b之间的距离d 2。
其中，第二分部200和第四分部400朝向外侧弯折，也即第二分部200的弯折轴线l 1位于屏幕承托板10的外侧，第四分部400的弯折轴线l 2位于屏幕承托板10的外侧。第三分部300朝向内侧弯折，也即第三分部300的弯折轴线l 3位于屏幕承托板10的内侧。可以理解，一般而言，第二分部200的弯折轴线l 1、第三分部300的弯折轴线l 3和第四分部400的弯折轴线l 2相互平行。屏幕承托板10位于柔性显示面板20外侧，第一支撑板31、第二支撑板32和第三支撑板33呈三边相互分离的三角形分布，并位于屏幕承托板10外侧，第一中框40、弯折机构60和第二中框50位于第一支撑板31、第二支撑板32和第三支撑板33的外侧。其中，由于本申请中示出的例子中电子设备1为内折式可折叠设备，因此外侧是指背向柔性显示面部20出光面的一侧，内侧是指朝向柔性显示面部20出光面的一侧。
除此之外，电子设备1也可以相对展开或相对折叠至中间状态，其中，中间状态可以为展平态与折叠态之间的任意状态。
在一些实施例中，折叠态时，电子设备1中的支撑板30与柔性屏幕组件2之间无作用力。
在介绍完电子设备1的结构构成以后，还需要继续描述各部分结构之间的位置关系和连接关系。为了能够清楚的描述，下面先介绍弯折机构60的具体机构。
图5(a)为本申请一些实施例中支撑板30和弯折机构60的爆炸图。如图5(a)所示，弯折机构60包括轴座61、第一支架62、第二支架63、同步装置64、第一同步臂65、第二同步臂66、滑块67和外壳68。
具体地，第一支架62可以转动连接至轴座61，第二支架63可以转动连接至轴座61，第一支架62和第二支架63相对设置在轴座61的两侧，轴座61安装至外壳68内。同步装置64用于实现第一中框40和第二中框50同步的相对折叠或相对展平。同步装置64转动连接至轴座61内，第一同步臂65的活动端滑动连接第一支架62，且第一同步臂65的活动端还转动连接第一支架62，第一同步臂65的同步端转动连接轴座61，且第一同步臂65的同步端与同步装置64相互啮合。在第一支架62和第二支架63相对轴座61转动的过程中，第一同步臂65会影响第一支架62的转动角度，第二同步臂66会影响第二支架63的转动角度。这样在第一同步臂65和第二同步臂66相对轴座61同步转动的过程中，会带 动第一支架62和第二支架63相对轴座61保持同步的转动。轴座61上安装有滑块67，滑块67滑动连接至轴座61，第一支架62、第二支架63与滑块67转动连接，也即第一支架62、第二支架63通过滑块67与轴座61转动连接。
在介绍弯折机构60的具体结构以后，下面将结合图3(a)至图5(c)详细描述各部分结构之间的位置关系和连接关系。
在一些实施例中，屏幕承托板10与柔性显示面板20通过胶层粘接固定。
在一种实现方式中，柔性显示面板20与屏幕承托板10的局部区域通过胶层粘接固定。其中，局部区域为屏幕承托板10中除第三分部300以外的其他部分。在另外一种实现方式中，屏幕承托板10与柔性显示面板20的全部区域通过胶层粘接固定。
第二支撑板32安装至轴座61。弯折机构60在展平态和折叠态切换的过程中，第二支撑板32能够相对轴座61在厚度方向S 3上移动，也即，第二支撑板32沿着厚度方向S 3朝远离轴座61的方向运动或第二支撑板32沿着厚度方向S 3朝靠近轴座61的方向运动，也即，第二支撑板32为可升降的板体，第二支撑板32可升降地连接至轴座61上。例如，图5(b)为本申请一些实施例中电子设备1处于折叠态时，支撑板30和弯折机构60沿着图4(b)中N-N剖面的剖视图，如图5(b)所示，电子设备1处于展平态时，第二支撑板32与弯折机构60中的外壳的最远距离为第一距离d 3。图5(c)为本申请一些实施例中电子设备1处于展平态时，支撑板30和弯折机构60沿着图4(a)中N-N剖面的剖视图，如图5(c)所示，电子设备1处于折叠态时，第二支撑板32与弯折机构60中外壳的最远距离为第二距离d 4。第一距离d 3大于第二距离d 4。上述结构，在展平过程中，第二支撑板32朝远离外壳68的方向运动，也即第二支撑板32逐渐升起，以支撑柔性显示面板20。在折叠过程中，第二支撑板32朝靠近外壳68的方向运动，也即第二支撑板32逐渐下降，以与第一支撑板31和第三支撑板33配合共同形成容纳柔性显示面板20的容纳空间。在一种实现方式中，弯折机构60包括弹性连接结构，第二支撑板32通过弹性连接结构与轴座61弹性连接，弯折机构60在折叠的过程中，弹性连接结构驱动第二支撑板32沿厚度方向S 3朝向轴座61运动。上述弹性连接结构的结构简单，操作方便，对第二支撑板32的可升降运动控制精准度高。
第一支撑板31与第一支架62转动连接，且第一支撑板31与轴座61滑动连接，第一支撑板31可以相对第一支架62转动的同时第一支撑板31还可以相对轴座61滑动。第一支撑板31和第三支撑板33分布于第二支撑板32的两侧。第三支撑板33与第二支架63转动连接，且第三支撑板33与轴座61滑动连接，第三支撑板33可以相对第二支架63转动的同时还可以相对轴座61滑动。
在一些实施例中，屏幕承托板10还包括第六分部600和第七分部700，且第一分部100、第二分部200、第六分部600、第三分部300、第七分部700、第四分部400和第五分部500沿着第一方向S 1依次设置。第一中框40和第二中框50分别与屏幕承托板10固定连接。
在一些实施例中，第一支撑板31与第六分部600的至少一部分相连，第三支撑部33与第七分部700的至少一部分相连。屏幕承托板10的第一分部100安装于第一中框40，第五分部500安装于第二中框50。在折叠态时，第二分部200、第三分部300和第四分部400分别弯折，且第二分部200、第六分部600、第三分部300、第七分部700和第四分部400共同形成特定形状。在第一中框40和第二中框50相对展开或者相对折叠的过程中，第一中框40带动第一分部100活动，第二中框50带动第五分部500活动，第一分部100与第五分部500相对折叠或展开，柔性显示面板20的第二分部200、第三分部300和第四分部400发生形变。可以理解，第三支撑板33与第一支撑板31的连接方式相似，在此不作 赘述。
在一些实现方式中，屏幕承托板10的第六分部600可以固定连接至第一支撑板31的支撑面32a的部分区域，例如可以通过胶层粘接固定。第七分部700可以固定连接至第三支撑板33的支撑面33a的部分区域，例如可以通过胶层粘接固定。可以理解，上述第一分部100与第一中框40之间的胶层、第六分部600与第一支撑板31之间的胶层、第七分部700与第三支撑板33之间的胶层、第五分部500与第二中框50之间的胶层，可以是连续的整面胶层，也可以是点断式胶层，还可以是具有镂空区域的胶层，本申请实施例对胶层的方案不作具体限定，任何能够实现上述部件相互连接的胶层均在本申请的保护范围之内。
其中，连续的整面胶层能够向需要粘接的两部件提供足够的结合力，进而保证两部件中间粘接的稳定性。点断式胶层在必要的粘贴点位粘接两部件，防止胶层溢出或裸露，进而避免灰尘、水汽等被粘附存储于两部件之间。
在介绍完屏幕承托板10中的主要组成部分之后，下面将全面的对比各个分部及分区之间刚度的差异。
图5(d)示出了一种屏幕承托板10刚度高低示意图，其中填充颜色越深的区域刚度越高，填充颜色越浅的区域刚度越低。如图5(d)所示，第一分部100和第五分部500的刚度大于第二分部200、第三分部300和第四分部400的刚度。第三分部300的刚度小于第二分部200和第四分部400的刚度。且第三分部300中的第一分区310、第三分区320和第五分区350的刚度小于第三分部300中的第二分区320和第四分区340的刚度。
此外，第二分区320和第四分区340的刚度相较于第二分部200和第四分部400的刚度不做具体限定，第二分区320和第四分区340的刚度可以略高于、略低于或相当于第二分部200和第四分部400的刚度。但第一分区310、第三分区320和第五分区350的刚度小于第二分部200和第四分部400的刚度。第六分部600和第七分部700的刚度不做具体限定，原则上应当大于第二分部200、第三分部300和第四分部400的刚度，例如第六分部600和第七分部700的刚度与第一分部100和第五分部500的刚度相当。
由于第二分部200、第三分部300和第四分部400的刚度均小于第一分部100和第五分部500的刚度，在通过单位体积内材料或结构实际所占的体积来表征刚度的情况下，第二分部200、第三分部300和第四分部400上均开设有减薄区域。其中减薄区域是指厚度小于屏幕承托板10整体厚度的区域。通过在胶层上开设于减薄区域对应的镂空结构，在保证第二分部200与第一支撑板31充分粘贴、第三分部300与第二支撑板32充分粘贴以及第四分部400与第三支撑板33充分粘贴，避免粘贴完成后部分胶层裸露于减薄区域。
基于此，具有镂空区域的胶层尤其适用于第二分部200与第一中框40之间、第三分部300与第一支撑板31之间、第三分部300与第二支撑板32之间、第三分部300与第三支撑板33之间以及第四分部400与第二中框50之间的粘接。上述实现方式采用大尺寸的具有镂空区域的胶层，实现了第二分部200、第三分部300、第四分部400、第一中框40、第二中框50、第一支撑板31、第二支撑板32和第三支撑板33等多个部件之间的一次性粘接，简化了粘接步骤，提高了粘接效率，同时还能够避免长条形通孔，凹槽等区域胶层的裸露，提高了部件之间粘接的稳定性，进而提高了电子设备的使用寿命。
除此之外，具有镂空区域的胶层屏幕还能够适用于承托板与柔性显示面板之间的连接。
除此之外，在电子设备1在展平态与折叠态切换的过程中，第一支撑板31、第二支撑板32和第三 支撑板33的相对位置发生改变，也即第二分部200无法全部粘贴于第一支撑板31，第三分部300无法全部粘贴于第二支撑板32，第四分部400无法全部粘贴于第三支撑板33。因此可以在整张胶层上除第二分部200与第一支撑板31始终相接的区域、第三分部300与第二支撑板32始终相接的区域以及第四分部400与第三支撑板33始终相接的区域的以外的其他区域开设镂空部，以避免电子设备在折叠态与展平态切换的过程中，部件之间粘贴与剥离，提高电子设备折叠与展平操作的流畅性，提升用户体验感。
在一些实现方式中，第一中框40与弯折机构60之间的连接方式，以及第二中框50与弯折机构60之间的连接方式可以是紧固结构固定、焊接、粘接、扣合连接等方式固定安装。
具体地，第一支架62固定连接第一中框40，第二支架63固定连接第二中框50，因此，第一支架62相对轴座61转动且第二支架63相对轴座61转动时，第一中框40相对第二中框50运动，第一支架62带动第一中框40且第二支架63带动第二中框50相对折叠或相对展开。
弯折机构60折叠的过程中，结合图4(b)和图5可知，第一支撑板31靠近第二支撑板32的一端31b朝远离第二支撑板32的方向运动，相似地，第三支撑板33靠近第二支撑板32的一端33b朝远离第二支撑板32的方向运动。第一支撑板31远离第二支撑板32的一端31c和第三支撑板33远离第二支撑板32的一端33c相互靠近。第二支撑板32朝靠近轴座61的方向运动。
上述结构能够在第一支撑板31、第二支撑板32和第三支撑板33能够自动避让，以形成容纳柔性显示面板20的容纳空间(未标示)。容纳空间邻近第二支撑板32的区域的尺寸较大，且远离第二支撑板32的区域的尺寸较小，这样弯折机构60折叠后，对应设置于弯折机构60的柔性显示面板20的折痕不明显，可以避免柔性显示面板20在弯折的过程中出现损伤。
弯折机构60展开的过程中，第一支撑板31远离第二支撑板32的一端31c朝远离轴座61的方向运动，第三支撑板33远离第二支撑板32的一端33c朝远离轴座61的方向运动。当电子设备1完全处于展平态时，第一支撑板31的支撑面31a、第二支撑板32的支撑面32a与第三支撑板33的支撑面33a齐平，以使屏幕承托板10和柔性显示面板20呈展平态。
上述结构能够在用户进行触控操作时，第一支撑板31、第二支撑板32和第三支撑板33能够为柔性显示面板20提供平整的强力支撑，提高用户的操作体验及观看体验。
在一些实施例中，第一方向S 1为电子设备1的高宽方向，第二方向S 2为电子设备1的宽度方向。在另外一些实现方式中，第一方向S 1为电子设备1的宽度方向，第二方向S 2为电子设备1的高度方向。
在一些实施例中，柔性显示面板20可以为有机发光二极管(organic light-emitting diode，OLED)显示屏，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light-emitting diode，AMOLED)显示屏，迷你有机发光二极管(mini organic light-emitting diode)显示屏，微型发光二极管(micro light-emitting diode)显示屏，微型有机发光二极管(micro organic light-emitting diode)显示屏，或量子点发光二极管(quantum dot light emitting diodes，QLED)显示屏。
在一些实施例中，电子设备1还可以包括多个收纳于支撑装置3的内部模组(未图示)。多个模组包括但不限于主板、处理器、存储器、电池、摄像头模组、听筒模组、扬声器模组、麦克风模组、天线模组、传感器模组等，本申请不作具体限定。
图6(a)为本申请一些实施例中屏幕承托板10展平态时的立体图，其中，图6(a)与图3(a)的立体视角不同。图6(a)中，投影g 1为图3(e)中第一间隙Gap1在屏幕承托板背面10b上的投影，投影g 1处于第二分区320内，投影g 2为6(a)中第二间隙Gap2在屏幕承托板背面10b上的投影，投影g 2处于第四分区340内。可以理解，由于尺寸及清晰度的限制，将间隙的投影简化为一条线。下面 将结合图6(a)详细描述本申请中的屏幕承托板10的结构。
如图6(a)所示，屏幕承托板10中的第三分部300包括沿着第一方向S 1依次布置的第一分区310、第二分区320、第三分区330、第四分区340和第五分区350。其中，第二分区320和第四分区340的刚度高于第一分区310、第三分区330和第五分区350。也即第一分区310、第三分区330和第五分区350的可弯折性能较高，第二分区320和第四分区340的支撑性能较好。
结合图6(a)和3(e)可知，第一分区310对应于第一支撑板31，第三分区330对应于第二支撑板32，第五分区350对应于第三支撑板33。第二分区320对应于第一支撑板31与第二支撑板32之间的第一间隙Gap1，第四分区340对应于第二支撑板32与第三支撑板33之间的第二间隙Gap2。
图6(b)为图6(a)中E区域的局部放大图。如图6(b)所示，在一些实施例中，第三分部300中的第一分区310、第三分区330和第五分区350开设有长条形通孔390。长条形通孔390连通屏幕承托板正面10m和屏幕承托板背面10n。单个长条形通孔390沿着与第二方向S 2延伸，多个长条形通孔390沿着第一方向S 1相邻相互交错排列。
上述实现方式中，通过第一分区310、第三分区330和第五分区350开设沿着第二方向S 2延伸的长条形通孔390，减小了第一分区310、第三分区330和第五分区350沿着第一方向S 1上的刚度，以提高屏幕承托板10绕着与第二方向S 2平行的轴线的可弯折性。同时，长条形通孔390沿着第一方向S 1相邻相互交错排列的布局方式保证了第一分区310、第三分区330和第五分区350在第二方向S 1上的刚度，进而提高展平状态时屏幕承托板10对柔性显示面部20的支撑强度，提升用户的体验感，延长屏幕组件及电子设备的使用寿命。
如图6(b)所示，在一些实施例中，长条形通孔390在屏幕承托板10的板面平行的截面的形状为哑铃形。其中，哑铃形为中间部分为长条形结构，长条形结构的两端设有宽度大于中间部分的跑道结构，跑道结构为中间位平形边界、两端为圆弧形边界过渡的结构。上述结构中，通过将第一分区310、第三分区330和第五分区350上的长条形通孔390设置为哑铃形，首先，第二方向S 2上的大尺寸保证了第三分部300绕着与第二方向S 2平行的轴线的可弯折性，其次，第一方向S 1上，两端的跑道结构设为较大尺寸能够提高第三分部300的弯折性，尽可能避免弯折时两端出现裂纹，中间部分上尺寸相对较小，用于在展平态时提高两相邻长条形通孔390之间实体的尺寸，以提高第三分部300整体的刚度。
可以理解，哑铃形仅为长条形通孔390在屏幕承托板10的板面平行的截面形状的其中一种示例，长条形通孔390在屏幕承托板10的板面平行的截面的形状还可以为长条形、跑道形，哑铃形等形状，本申请不作具体限定。其中长条形通孔390在屏幕承托板10的板面平行的截面的形状将在下文描述第二分区320和第四分区340中的孔结构380时一并描述。
为了提高第二分部200和第四分部400的可弯折性能，继续参考图6(a)可知，在一些实施例中，第二分部200的背向柔性显示面板20的表面开设有第二弯折槽210，第四分部400背向柔性显示面板20的表面开设有第三弯折槽410。第二弯折槽210和第三弯折槽410均沿着第二方向S 2延伸。
为了进一步提升用户体验，继续参考图6(a)可知，在一些实施例中，第二弯折槽210和第三弯折槽410开设于屏幕承托板10的屏幕承托板背面10n，也即第二弯折槽210和第三弯折槽410开设于屏幕承托板10背向柔性显示面板20的一侧。
图6(c)为本申请一些实施例中第二分部200与柔性显示面板20之间的搭接示意图。图6(d)为本申请另外一些实施例中第二分部200与柔性显示面板20之间的搭接示意图。对比图6(c)和图6(d)可知，图6(c)中第二弯折槽210的槽口朝向支撑板30，槽底朝向柔性显示面板20，能够在接收到外 界载荷F时，例如用户触摸柔性显示面板20时，通过槽底支撑柔性显示面板20，尽可能避免第二弯折槽210按照图6(d)反向设置时槽口位置处导致的虚位220，提升用户的触摸体验，延长柔性显示面板20的使用寿命。相似地，第三弯折槽410槽口及槽底的设置方式与第二弯折槽210的设置方式相似，在此不作赘述。
基于此，下面将详细介绍第二分区320与第一支撑板31和第二支撑板32之间的第一间隙Gap1之间的对应关系，以及第四分区340与第二支撑板32和第三支撑板33之间的第二间隙Gap2之间的对应关系。
在一些应用场景中，结合图3(e)和图6(a)可知，第一间隙Gap1和第二间隙Gap2沿着第二方向S 2延伸的直线形态。在一些实施例中，第二分区320覆盖第一间隙Gap1，第四分区340覆盖第二间隙Gap2。
图7(a)为本申请一些实施例中第一间隙Gap1和第二间隙Gap2沿直线延伸时，屏幕承托板10中第三分部300的示意图。如图7(a)所示，第一支撑板31与第二支撑板32之间的第一间隙Gap1在屏幕承托板背面10b上的投影g 1为沿着第二方向S 2延伸的直线，第二分区320为覆盖投影g 1(也即第一支撑板31与第二支撑板32之间的第一间隙Gap1)的长条形区域，且第二分区320沿着第二方向S 2延伸。第二支撑板32与第三支撑板33之间的第二间隙Gap2在屏幕承托板背面10b上的投影g 2为沿着第二方向S 2延伸的直线，第四分区340为局部覆盖投影g 2(也即第二支撑板32与第三支撑板33之间的第二间隙Gap2)的多个长条形区域，且第四分区340沿着第二方向S 2延伸。
在一些实现方式中，第二分区320与第二方向S 2平行的边界对称分布于投影g 1的两侧，第四分区340与第二方向S 2平行的边界对称分布于投影g 2的两侧。基于此，能够实现间隙两侧的支撑板对第二分区和/或第四分区的均衡支撑，保证了支撑板30、柔性显示面板20和屏幕承托板10的受力均衡，避免受力不均导致的结构磨损，延长支撑板30、柔性显示面板20、屏幕承托板10及电子设备的使用寿命。
在另外一些应用场景下，第一间隙Gap1和第二间隙Gap2并非沿着第二方向S 2延伸的直线形态，如图6(e)和如图6(f)所示，第一支撑板31和第二支撑板32之间的第一间隙Gap1，以及第二支撑板32和第三支撑板33之间的第二间隙Gap2沿着折线延伸。
对于图6(e)和如图6(f)表征的应用场景，本申请根据间隙的实际形态对第二分区320和第四分区340的延伸形态需要适应性调整，以能够完全覆盖第一支撑板31和第二支撑板32之间的第一间隙Gap1，以及第二支撑板32和第三支撑板33之间的第二间隙Gap2。
在一些应用场景中，为了防止折叠过程中弯折机构60和支撑板30干涉，在一些实现方式中，支撑板30上开设有开口(或者缺口)，而为了实现支撑板30对屏幕承托板10和柔性显示面板的稳定支撑，还需要增设与开口(或者缺口)位置处相对、尺寸相当的板结构。如图7(b)所示，第一支撑板31上开设有用于防止与弯折机构60干涉的第一缺口31m，第二支撑板32上开设有与第一缺口31m相配合的第一凸起32m，第三支撑板33上开设有用于防止与弯折机构60干涉的第三缺口33n，第二支撑板32上开设有与第三缺口33n相配合的第二凸起32n。基于此，如图7(c)、图7(d)、图7(e)和图7(f)所示，投影g 1包括第一段投影g 11、第二段投影g 12和第三段投影g 13三段，其中，第一段投影g 11和第三段投影g 13分布于同一直线，并与弯折轴线平行。第二段投影g 12对应于第一支撑板31的第一缺口31m与第二支撑板32的第一凸起处32m。相似地，投影g 2包括第一段投影g 21、第二段投影g 22和第三段投影g 23三段，其中，第一段投影g 21和第三段投影g 23分布于同一直线，并与弯折轴线平行。第二段投影g 22对应于第三支撑板33的第三缺口33n与第二支撑板32的第二凸起处32n。下面将根据上述 的应用场景详细描述几种第二分区320和第四分区340的延伸形态的调整方案。
图7(c)为本申请其他一些实施例中屏幕承托板10中第三分部300的示意图。如图7(c)所示，第二分区320为覆盖投影g 1(也即第一支撑板31与第二支撑板32之间的第一间隙Gap1)的长条形区域，且第二分区320沿着第二方向S 2延伸。也即，第二分区320为覆盖包括第一支撑板31的第一缺口31m的边界和第二支撑板32的第一凸起32m的边界在内的整条第一间隙Gap1的长条形区域。第四分区340为覆盖投影g 2(也即第二支撑板32与第三支撑板33之间的第二间隙Gap2)的长条形区域，且第四分区340沿着第二方向S 2延伸。也即，第四分区340为覆盖包括第三支撑板33的第三缺口33n的边界和第二支撑板32的第二凸起32n的边界在内的整条第二间隙Gap2的长条形区域。可以理解，对于第二支撑板32上开设有第二缺口(未图示)，以及第一支撑板31和第三支撑板33上开设的与第二缺口对应的第三凸起而言，第二分区320和第四分区340的设置方式与图7(c)中的设置方式相似，在此不作赘述。
在一些实现方式中，第二分区320与第二方向S 2平行的两条边界上的点到投影g 1之间的最短距离相等，相似地，第四分区340与第二方向S 2平行的两条边界上的点到投影g 2之间的最短距离相等。
图7(d)为本申请另外一些实施例中屏幕承托板10中第三分部300的示意图。如图7(d)所示，第二分区320为沿着投影g 1延伸的区域，也即第二分区320的延伸轨迹与第一支撑板31与第二支撑板32之间的第一间隙Gap1的延伸轨迹相同。也即，第二分区320的延伸轨迹与包括第一支撑板31的第一缺口31m的边界和第二支撑板32的第一凸起32m的边界在内的整条第一间隙Gap1的延伸轨迹相同。第四分区340为沿着投影g 2延伸的区域，也即第四分区340的延伸轨迹与第二支撑板32与第三支撑板33之间的第二间隙Gap2的延伸轨迹相同。也即，第四分区340的延伸轨迹与包括第三支撑板33的第三缺口33n的边界和第二支撑板32的第二凸起32n的边界在内的整条第二间隙Gap2的延伸轨迹相同。可以理解，对于第二支撑板32上开设有第二缺口(未图示)，以及第一支撑板31和第三支撑板33上开设的与第二缺口对应的第三凸起而言，第二分区320和第四分区340的设置方式与图7(d)中的设置方式相似，在此不作赘述。
上述第二分区320和第四分区340的布局方式，实现了对第一支撑板31和第二支撑板32之间的第一间隙Gap1，以及第二支撑板32和第三支撑板33之间的第二间隙Gap2，同时还尽可能减少了第一分区320和第四分区340在屏幕承托板10板面的占比，也即尽可能保证了屏幕承托板10的可弯折性。
在一些实现方式中，第二分区320与第二方向S 2平行的边界上的各点与投影g 1之间的距离相等，相似地，第四分区340与第二方向S 2平行的边界上的各点与投影g 2之间的距离相等。
图7(e)为本申请再一些实施例中屏幕承托板10中第三分部300的示意图。第二分区320包括沿着投影g 1延伸的延伸区域和延伸区域两侧的内凹区域(例如图7(e)中的O区域)。也即，第二分区320包括延伸轨迹与包括第一支撑板31的第一缺口31m的边界和第二支撑板32的第一凸起32m的边界在内的整条第一间隙Gap1的延伸轨迹相同的延伸区域，以及第一凸起32m所处的区域。相似地，第四分区340包括沿着投影g 2延伸的延伸区域(如图7(d)所示)和延伸区域两侧的内凹区域。也即，第四分区340包括延伸轨迹与包括第三支撑板33的第三缺口33n的边界和第二支撑板32的第二凸起32n的边界在内的整条第一间隙Gap2的延伸轨迹相同的延伸区域，以及第二凸起32n所处的区域。可以理解，对于第二支撑板32上开设有第二缺口(未图示)，以及第一支撑板31和第三支撑板33上开设的与第二缺口对应的第三凸起而言，第二分区320和第四分区340的设置方式与图7(e)中的设置方式相似，在此不作赘述。
上述第二分区320和第四分区340的布局方式，避免了第二分区320和第四分区340中小面积的内凹区域对整体结构隔割裂，降低了加工难度。
图7(f)为本申请再一些实施例中屏幕承托板10中第三分部300的示意图。其中图7(f)与图7(d)的不同之处在于，图7(e)中第二段投影g 12和第二段投影g 12中凸出于直线的距离较远，例如，第二段投影g 12包括依次相连的过渡线段g 121、主线段g 122和过渡线段g 123，主线段g 122与第一段投影g 11和第三段投影g 13所在直线的距离较远。第二分区320包括子分区321和子分区322。其中，子分区321覆盖第二段投影g 12中主线段g 122，子分区322覆盖第一段投影g 11和第三段投影g 13，除此之外，子分区321还覆盖了过渡线段g 121与主线段g 122相接的一端(未标示)，以及过渡线段g 123与主线段g 122相接的一端(未标示)，子分区321还覆盖了过渡线段g 121与第一段投影g 11相接的一端(未标示)，以及过渡线段g 123与第三段投影g 13相接的一端(未标示)。
在一些实现方式中，第二分区320可以不覆盖过渡线段g 121和过渡线段g 123中间的区域。可以理解，当过渡线段g 121和过渡线段g 123与弯折轴线的夹角较大时(趋近于90°时)，过渡线段g 121和过渡线段g 123所在的位置处无需设置分区，而当过渡线段g 121和过渡线段g 123与弯折轴线的夹角较小时(趋近于0°时)，过渡线段g 121和过渡线段g 123所在的位置处可以增设若干沿着第二方向S 2尺寸较小的分区。相似地，第四分区340包括子分区341和子分区342，在此不作赘述。也即，在第一支撑板31包括第一缺口31m在内的边界和第二支撑板32包括第一凸起32m在内的边界第一间隙Gap1中，延伸方向与第二方向S 2平行的部分包括第一缺口31m中与第二方向S 2平行的边界和第一凸起32m中与第二方向S 2平行的边界之间的间隙(对应于主线段g 122)，以及第一支撑板31除第一缺口31m以外的边界和第二支撑板32除第一凸起32m以外的边界之间的间隙(对应于第一段投影g 11和第三段投影g 13)。主线段g 122对应的间隙在屏幕承托板10的板面内的正投影位于子分区321在屏幕承托板10的板面内的正投影内。第一段投影g 11和第三段投影g 13对应的间隙在屏幕承托板10的板面内的正投影位于子分区322在屏幕承托板10的板面内的正投影内。
为了保证屏幕承托板10弯折性能的均衡性，在一些实施例中，第二分区320、第四分区340、子分区321、子分区322、子分区341和子分区342均为沿着第二方向S 2贯通屏幕承托板10的分区。
上述第二分区320和/或第四分区340通过分割为若干个沿着第二方向S 2贯通的分区，保证了沿着第一方向S 1同一位置处屏幕承托板10的结构的一致性，同时便于将折叠状态时产生的应力沿着第二方向S 2扩散至屏幕承托板10的两端，尽可能避免应力残存。因此上述实现方式保证了屏幕承托板10可弯折性能的一致性，避免了折叠状态下屏幕承托板10沿着第二方向S 2上形成局部凸起，进一步延长了屏幕承托板10和柔性显示面板20的使用寿命。
在介绍完第二分区320与第一支撑板31与第二支撑板32之间的第一间隙Gap1，以及第四分区340与第二支撑板32与第三支撑板33之间的第二间隙Gap2之间的对应关系之后，将继续介绍第二分区320和第四分区340的优化方案。
图8(a)为本申请其他一些实施例中屏幕承托板10展平态时E区域的局部放大图。图8(b)为图8(a)中F 1区域的局部放大图。在一些实施例中，第二分区320和第四分区340的板面上开设有凹槽360，且凹槽360的延伸方向与第二方向S 2平行。可以理解，同一屏幕承托板10上第二分区320的至少一部分和第四分区340的至少一部分开设有凹槽360，其他部分上未开设有凹槽360，例如，第二分区320沿着第一方向S 1靠近第一支撑板31和第二支撑板32的两侧保留原来的厚度，两侧之间的中间区域开设凹槽360。或者，同一屏幕承托板10上的第二分区320的所有部分和第四分区340的所有 部分均开设有凹槽360。
为了进一步提升用户体验，在一些实施例中，凹槽360开设于屏幕承托板10的屏幕承托板背面10n，也即凹槽360开设于屏幕承托板10背向柔性显示面板20的一侧。上述结构中，凹槽360的槽口朝向支撑板30，槽底朝向柔性显示面板20，尽可能避免用户触摸柔性显示面板20时的虚位感，提升用户体验。
在一些实施例中，屏幕承托板10的厚度范围为0.10mm～0.2mm，凹槽360的底部的尺寸范围为0.03mm～0.15mm，对应的，凹槽360的槽深范围为0.05mm～0.17mm。可以理解，屏幕承托板10的厚度即为凹槽360的底部尺寸与凹槽360的槽深之和。
图9(a)为本申请另外一些实施例中屏幕承托板10展平态时E区域的局部放大图。图9(b)为图9(a)中F 2区域的局部放大图。当第一支撑板31和第二支撑板32之间的第一间隙Gap1，和/或，第二支撑板32和第三支撑板33之间的第二间隙Gap2较宽时，为了保证第二分区320和第四分区340的刚度和强度，在一些实施例中，凹槽360包括第一凹槽361和第二凹槽362，其中第一凹槽361和第二凹槽362之间设有加强筋370，且加强筋370的延伸方向与第二方向S 2平行。
在一些实施例中，当凹槽360沿着第一方向S 1的尺寸大于1.5mm时，凹槽360包括第一凹槽361和第二凹槽362，其中第一凹槽361和第二凹槽362之间设置加强筋370。
在一些实施例中，第二分区320和第四分区340沿着第一方向S 1的尺寸范围为0.5mm～2mm。
图10(a)为本申请再一些实施例中屏幕承托板10展平态时E区域的局部放大图。图10(b)为图10(a)中F 3区域的局部放大图。当支撑板两两相邻的间隙较宽时，为了保证第二分区320和第四分区340的强度，在一些实施例中，第二分区320和第四分区340开设有多个相互离散的孔结构380。
为了有效提高屏幕承托板10中第二分区320和第四分区340的支撑性能，在一些实施例中，孔结构380在屏幕承托板10的板面内的最大一维尺寸小于最小触点区域的最小一维尺寸。可以理解，孔结构380可以为通孔或者盲孔，最小触点区域可以是基于大数据获取的用于表征用户最小触摸面积或者最小单向触摸尺寸时的触摸区域，例如可以是用户手指触摸屏幕的最小区域。
为了进一步提高屏幕承托板10中第二分区320和第四分区340的支撑性能，在一些实施例中，孔结构380错落的分布于间隙在板面投影的两侧。
在一些实现方式中，如图10(c)所示，孔结构380的截面为圆形截面381。
为了提高孔结构380的多样性，以搭配出多种需求的刚度和可弯折性，在其他一些可替代的实现方式中，如图10(d)所示，孔结构380的截面为多边形截面382。
为了提高孔结构380的多样性，以搭配出多种需求的刚度和可弯折性，在其他一些可替代的实现方式中，如图10(e)所示，孔结构380的截面为圆角矩形截面383。
在其他一些可替代的实现方式中，如图10(f)所示，孔结构380的截面为跑道形截面384。其中，跑道形截面384包括沿着同一轴线依次布置并相连的第一半圆形3841、矩形3842和第二半圆形3843。在垂直于同一轴线的方向上，第一半圆形3841、矩形3842和第二半圆形3843的尺寸相等。第一半圆形3841、矩形3842和第二半圆形3843的边界相切并圆滑过渡。通过将孔结构380设为跑道形，在第二方向S 2上的大尺寸保证了第三分部300绕着与第二方向S 2平行的轴线的可弯折性，其次，第一方向S 1上，两端的圆形结构能够提高第三分部300的弯折性，尽可能避免弯折时两端出现裂纹。
在其他一些可替代的实现方式中，如图10(g)所示，孔结构380的截面为哑铃形截面385。其中，哑铃形截面385包括沿着同一轴线依次布置并相连的第一跑道形3851、矩形3852和第二跑道形3853。在垂直于同一轴线的方向上，第一跑道形3851和第二跑道形3852上的尺寸大于矩形3852的尺寸。第 一跑道形3851、矩形3852和第二跑道形3853的边界圆滑过渡。上述孔结构380中，中间部分上尺寸相对较小，用于在展平态时提高第二分区320和第四分区340中两相邻孔结构380之间实体的尺寸，以提高第三分部300整体的刚度，两端的跑道结构设为较大尺寸能够提高第三分部300的弯折性，尽可能避免弯折时两端出现裂纹。
在其他一些可替代的实现方式中，如图10(h)所示，孔结构380的截面为跑道哑铃复合形截面386。跑道哑铃复合形截面386包括依次相连的第一跑道形3861、矩形3862和第二跑道形3863。第一跑道形3861、矩形3862和第二跑道形3863一侧边平齐，且在垂直于一侧边的方向上，第一跑道形3861和第二跑道形3863的尺寸大于矩形3862的尺寸。第一跑道形3861、矩形3862和第二跑道形3863的边界圆滑过渡。
可以理解，长条形通孔390与孔结构380的形状相似，且单个长条形通孔390与单个孔结构380的布局方相同，例如单个长条形通孔390与单个孔结构380均沿着第二方向S 2延伸。长条形通孔390与孔结构380的区别之处在于，长条形通孔390沿着第二方向S 2的尺寸大于孔结构380沿着第二方向S 2的尺寸。
在一些实施例中，本申请中的第二分区320和第四分区340中的凹槽360、加强筋370和孔结构380可以根据弯折需求和支撑需求任意搭配，也即，第二分区320和第四分区340可以开设凹槽360，或者，第二分区320和第四分区340可以在凹槽360内开设孔结构380，或者，第二分区320和第四分区340可以直接开设孔结构380，或者，第二分区320和第四分区340可以在凹槽360内设置加强筋370，或者，将某一分区划分为多个子分区，多个子分区可以分别采用上述至少一种形式。
在一些实现方式中，第二分区320和第四分区340中的凹槽360、加强筋370和孔结构380可以根据相邻两个支撑板30之间的间隙的宽度搭配。例如，相邻两个支撑板30之间的间隙越宽，则凹槽360的槽深越小，加强筋370的布局得更密，孔结构380的孔径越小，孔结构380所覆盖的比率越小。
在另外一些实现方式中，第二分区320和第四分区340中的凹槽360、加强筋370和孔结构380根据相邻两个支撑板30之间的间隙的轮廓形状搭配。
例如，图11(a)中相邻两个支撑板30之间的间隙的轮廓形状与图7(d)中轮廓形状相同时，屏幕承托板10的立体图。图11(b)中示出了图11(a)中G区域中第一支撑板31、第二支撑板32和第三支撑板33的立体图。图11(c)中示出了图11(a)中G区域中第一支撑板31、第二支撑板32、第三支撑板33和第三分部300的配合示意图。其中，图11(c)中，延伸长度较长的间隙对应的分区上设置凹槽(未图示，参考图8(b))，延伸长度较短的间隙对应的分区(图7(d)中D区域左侧的第二端投影g 12所在的区域)上设置离散分布的孔结构380。
再例如，如图12所示，相邻两个支撑板30之间的间隙的轮廓形状与图7(e)中的相同。其中，图12中，第二分区320包括子分区323和子分区324，其中，子分区323和子分区324设置均设置有凹槽(未图示，参考图8(b))。
在一些实施例中，屏幕承托板10的材质为钛合金、铝合金和不锈钢中的至少一种。
在一些实现方式中，屏幕承托板10的加工工艺为刻蚀。例如，利用刻蚀工艺刻蚀屏幕承托板10上的第二弯折槽210、凹槽360、加强筋370、孔结构380、长条形通孔390和第三弯折槽410。
结合图3(b)和图4(b)可知，本申请还提供一种柔性屏幕组件2，柔性屏幕组件2包括上述任意一种屏幕承托板10和柔性显示面板20，屏幕承托板10设置于柔性显示面板20的背面，并与柔性显示面板20相连。
在一种实现方式中，柔性显示面板20与屏幕承托板10的局部区域通过胶层粘接固定。其中，局部区域为屏幕承托板10中除第三分部300以外的其他部分。在另外一种实现方式中，屏幕承托板10与柔性显示面板20的全部区域通过胶层粘接固定。
本申请还提供一种电子设备1，如上述的电子设备1中的任意一种，在此不作赘述。
需要说明的是，在本说明书中，相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在上述的附图中不需要对其进行进一步定义和解释。
以上由特定的具体实施例说明本申请的实施方式，本领域技术人员可由本说明书所揭示的内容轻易地了解本申请的其他优点及功效。虽然本申请的描述将结合一些实施例一起介绍，但这并不代表此申请的特征仅限于该实施方式。恰恰相反，结合实施方式作申请介绍的目的是为了覆盖基于本申请的权利要求而有可能延伸出的其它选择或改造。本申请也可以不使用这些细节实施。此外，为了避免混乱或模糊本申请的重点，有些具体细节在描述中被省略。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“外侧”、“内侧”、“周向”、“径向”、“轴向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“连接”、“贴合”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种电子设备(1)，其特征在于，包括可折叠的屏幕承托板(10)、柔性显示面板(20)和支撑板(30)，所述支撑板(30)包括第一支撑板(31)、第二支撑板(32)和第三支撑板(33)；所述屏幕承托板(10)设置于所述柔性显示面板(20)和所述支撑板(30)之间；
    当所述电子设备(1)处于展平态时，所述第一支撑板(31)、所述第二支撑板(32)和所述第三支撑板(33)依次设置方向为第一方向；
    所述屏幕承托板(10)包括沿着所述第一方向依次设置的第一分部(100)、第二分部(200)、第三分部(300)、第四分部(400)和第五分部(500)，其中，所述第一分部(100)和所述第五分部(500)的刚度大于所述第二分部(200)、所述第三分部(300)和所述第四分部(400)的刚度；
    所述第三分部(300)包括沿着所述第一方向依次设置的第一分区(310)、第二分区(320)、第三分区(330)、第四分区(340)和第五分区(350)，其中，所述第一分区(310)、所述第三分区(330)和所述第五分区(350)的刚度小于所述第二分区(320)和所述第四分区(340)的刚度；
    当所述电子设备(1)处于折叠态时，所述第一分部(100)和所述第五分部(500)相对设置，所述第二分部(200)、所述第三分部(300)和所述第四分部(400)处于弯折状态；所述第一支撑板(31)、所述第二支撑板(32)和所述第三支撑板(33)围设形成容纳空间，至少部分的所述屏幕承托板(10)和至少部分的柔性显示面板(20)的设于所述容纳空间；
    当所述电子设备处于所述展平态时，所述第一支撑板(31)、所述第二支撑板(32)以及所述第一支撑板(31)和所述第二支撑板(32)之间的第一间隙在所述屏幕承托板的板面上的正投影分别至少部分位于所述第二分区(320)所在的区域，所述第二支撑板(32)、所述第三支撑板(33)以及所述第二支撑板(32)和所述第三支撑板(33)之间的第二间隙在所述屏幕承托板的板面上的正投影分别至少部分位于所述第四分区(340)所在的区域。
  2. 根据权利要求1所述的电子设备(1)，其特征在于，所述第一分区(310)、所述第三分区(330)和所述第五分区(350)的刚度小于所述第二分部(200)和所述第四分部(400)的刚度。
  3. 根据权利要求1或2所述的电子设备(1)，其特征在于，当所述电子设备处于所述展平态时，所述第一间隙在所述屏幕承托板的板面上的正投影位于所述第二分区(320)所在的区域内，所述第二间隙在所述屏幕承托板的板面上的正投影位于所述第四分区(340)所在的区域内。
  4. 根据权利要求1-3中任一项所述的电子设备(1)，其特征在于，当所述电子设备处于所述展平态时，所述第二分区(320)和所述第四分区(340)为矩形区域，所述矩形区域沿着垂直于所述第一方向的方向贯穿所述屏幕承托板(10)。
  5. 根据权利要求1-3中任一项所述的电子设备(1)，其特征在于，所述第二分区(320)和所述第四分区(340)在所述第一方向上的尺寸范围为0.5mm～2mm。
  6. 根据权利要求1所述的电子设备(1)，其特征在于，所述第一分区(310)、所述第二分区(320)、所述第三分区(330)、所述第四分区(340)和所述第五分区(350)材质相同，所述第二分区(320)和所述第四分区(340)的厚度小于所述第一分区(310)、所述第三分区(330)和所述第五分区(350)的厚度。
  7. 根据权利要求6所述的电子设备(1)，其特征在于，所述第二分区(320)和所述第四分区(340)上均开设有凹槽(360)，所述凹槽(360)沿第二方向延伸；当所述电子设备处于展平态，所述第二方向平行于所述屏幕承托板(10)的板面，所述第二方向垂直于所述第一方向。
  8. 根据权利要求7所述的电子设备(1)，其特征在于，所述凹槽(360)开口与所述柔性显示面板(20)的出光面相背。
  9. 根据权利要求7或8所述的电子设备(1)，其特征在于，所述凹槽(360)包括第一凹槽(361)和第二凹槽(362)，所述第一凹槽(361)和所述第二凹槽(362)间设有加强筋(370)，所述加强筋(370)沿所述第二方向延伸。
  10. 根据权利要求7至9中任一项所述的电子设备(1)，其特征在于，所述第二分区(320)和所述第四分区(340)中所述凹槽(360)在所述电子设备厚度方向上的尺寸范围为0.03mm～0.15mm。
  11. 根据权利要求1-10中任一项所述的电子设备(1)，其特征在于，所述第一分区(310)、所述第二分区(320)、所述第三分区(330)、所述第四分区(340)和所述第五分区(350)材质相同，所述第二分区(320)和所述第四分区(340)开设有多个孔结构(380)。
  12. 根据权利要求11所述的电子设备(1)，其特征在于，所述孔结构(380)平行于所述屏幕承托板的板面的截面的形状为圆形、方形、跑道形和哑铃形中的任意一种。
  13. 根据权利要求1-12中任一项所述的电子设备(1)，其特征在于，所述屏幕承托板(10)的材质为钛合金、铝合金和不锈钢中的至少一种。
  14. 根据权利要求1-13中任一项所述的电子设备(1)，其特征在于，所述第一分区(310)、所述第三分区(330)和所述第五分区(350)开设有长条形通孔(390)，单个所述长条形通孔(390)沿与所述第一方向垂直的方向延伸，多个所述长条形通孔(390)沿所述第一方向相邻相互交错排列；所述第二分部(200)的第一表面开设有第一弯折槽(210)，所述第二分部(200)的第一表面与所述柔性显示面板(20)的出光面相背，所述第四分部(400)的第一表面开设有第三弯折槽(410)，所述第四分部(400)的第一表面与所述柔性显示面板(20)的出光面相背。
  15. 根据权利要求1所述的电子设备(1)，其特征在于，所述电子设备(1)还包括第一中框(40)、第二中框(50)和弯折机构(60)；
    其中，所述第一分部(100)与所述第一中框(40)固定连接，所述第五分部(500)与所述第二中框(50)固定相连，所述第一中框(40)和所述第二中框(50)分别和所述弯折机构(60)固定相连；
    所述第一支撑板(31)转动连接于所述弯折机构(60)，并能够相对所述弯折机构(60)滑动，所述第二支撑板(32)转动连接于所述弯折机构(60)，并能够相对于所述弯折机构(60)滑动；
    所述电子设备(1)处于展平态时，所述第二支撑板(32)与所述弯折机构(60)中的外壳的最远距离为第一距离，所述电子设备(1)处于折叠态时，所述第二支撑板(32)与所述弯折机构(60)中外壳的最远距离为第二距离，所述第一距离大于所述第二距离；
    所述电子设备(1)处于展平态时，所述第一支撑板(31)的上表面、所述第二支撑板(32)的上表面、所述第三支撑板(33)的上表面、所述第一中框(40)的上表面和所述第二中框(50)的上表面处于同一平面。
  16. 根据权利要求1至15中任一项所述的电子设备(1)，其特征在于，所述电子设备(1)处于折叠态时，所述第二分部(200)的至少一部分、所述第三分部(300)和所述第四分部(400)的至少一部分设于所述容纳空间内。
  17. 根据权利要求1至16中任一项所述的电子设备(1)，其特征在于，
    所述屏幕承托板(10)还包括设于所述第二分部(200)和所述第三分部(300)之间的第六分部(600)，以及设于所述第三分部(300)和所述第四分部(400)之间的第七分部(700)；
    所述第一支撑板(31)和所述第六分部(600)的至少一部分相连，所述第三支撑板(33)与所述第七分部(700)的至少一部分相连。
  18. 一种可折叠的屏幕承托板(10)，应用于包括柔性显示面板(20)和支撑板(30)的电子设备，其特征在于，
    所述屏幕承托板(10)包括沿着第三方向依次布置的第一分部(100)、第二分部(200)、第三分部(300)、第四分部(400)和第五分部(500)，
    所述第三分部(300)包括沿着所述第三方向依次设置的第一分区(310)、第二分区(320)、第三分区(330)、第四分区(340)和第五分区(350)，其中，所述第一分区(310)、所述第三分区(330)和所述第五分区(350)的刚度小于所述第二分区(320)和所述第四分区(340)的刚度。
  19. 根据权利要求18所述的屏幕承托板(10)，其特征在于，所述第二分区(320)和所述第四分区(340)在所述第三方向上的尺寸范围为0.5mm～2mm。
  20. 根据权利要求18或19所述的屏幕承托板(10)，其特征在于，当所述电子设备处于展平态时，所述第二分区(320)和所述第四分区(340)在所述屏幕承托板的板面上的正投影为矩形区域，所述矩形区域沿着垂直于所述第三方向的方向贯穿所述屏幕承托板(10)。
  21. 根据权利要求18至20中任一项所述的屏幕承托板(10)，其特征在于，所述第一分区(310)、所述第二分区(320)、所述第三分区(330)、所述第四分区(340)和所述第五分区(350)材质相同，所述第二分区(320)和所述第四分区(340)的厚度小于所述第一分区(310)、所述第三分区(330)和所述第二分区(320)的厚度。
  22. 根据权利要求21所述的屏幕承托板(10)，其特征在于，所述第二分区(320)和所述第四分区(340)在所述电子设备厚度方向上的尺寸范围为0.03mm～0.15mm。
  23. 根据权利要求18至22中任一项所述的屏幕承托板(10)，其特征在于，所述第一分区(310)、所述第二分区(320)、所述第三分区(330)、所述第四分区(340)和所述第五分区(350)材质相同，所述第二分区(320)和所述第四分区(340)开设有多个孔结构。
  24. 一种柔性屏幕组件(2)，其特征在于，包括权利要求18至23中任一项所述的屏幕承托板(10)和柔性显示面板(20)，所述屏幕承托板(10)设置于所述柔性显示面板(20)的靠近所述支撑板(30)的表面，并与所述柔性显示面板(20)相连。
PCT/CN2022/114607 2021-09-03 2022-08-24 电子设备、屏幕承托板及柔性屏幕组件 WO2023030140A1 (zh)

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