CN113724596B - Display device, display module and folding structure - Google Patents

Display device, display module and folding structure Download PDF

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Publication number
CN113724596B
CN113724596B CN202111006833.5A CN202111006833A CN113724596B CN 113724596 B CN113724596 B CN 113724596B CN 202111006833 A CN202111006833 A CN 202111006833A CN 113724596 B CN113724596 B CN 113724596B
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area
display panel
flexible display
region
bearing
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CN113724596A (en
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郝潇鸣
高彪
李钊
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/549Organic PV cells

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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)

Abstract

The disclosure provides a display device, a display module and a folding structure. The folding structure comprises: the bearing assembly is used for bearing the flexible display panel and comprises at least two bearing areas, a spacing area is arranged between two adjacent bearing areas, and one bearing area of the two adjacent bearing areas can be overturned relative to the other bearing area so as to fold or unfold the flexible display panel; the support piece comprises a connecting end and a free end, wherein the connecting end is connected to one side of the bearing area, which faces the flexible display panel, the free end can rotate relative to the connecting end, and the rotation axis of the free end is parallel to the overturning axis of the bearing area. The present disclosure can reduce the risk of failure of a flexible display panel.

Description

Display device, display module and folding structure
Technical Field
The disclosure relates to the technical field of display, in particular to a display device, a display module and a folding structure.
Background
With the development of technology, the conventional rigid display device cannot meet the requirements of modern people; the folding display device is widely applied to terminals such as smart phones and tablet computers. However, the risk of failure of existing folding display devices is high.
Disclosure of Invention
An object of the present disclosure is to provide a display device, a display module, and a folding structure, which can reduce failure risk of a flexible display panel.
According to an aspect of the present disclosure, there is provided a folding structure for folding a flexible display panel, including:
the bearing assembly is used for bearing the flexible display panel and comprises at least two bearing areas, a spacing area is arranged between two adjacent bearing areas, and one bearing area of the two adjacent bearing areas can be overturned relative to the other bearing area so as to fold or unfold the flexible display panel;
the support piece comprises a connecting end and a free end, the connecting end is connected to one side of the bearing area, which faces the flexible display panel, the free end can rotate relative to the connecting end, and the rotation axis of the free end is parallel to the overturning axis of the bearing area;
in the process of overturning two adjacent bearing areas to fold the flexible display panel, the supporting piece can rotate to a preset position in contact with the flexible display panel, the free end of the supporting piece located at the preset position is located at one side of the connecting end, which is close to the spacing area, and an included angle is formed between the supporting piece located at the preset position and the bearing area.
Further, the bearing area comprises a first area and a second area, the second area is located on one side, close to the spacing area, of the first area, a concave portion is arranged on one side, facing the flexible display panel, of the second area, and the supporting piece can enter/leave the concave portion under rotation of the free end.
Further, the support member includes a first side surface and a second side surface, the first side surface being coplanar with a surface of the first region facing the flexible display panel after the support member enters the recess portion, and the second side surface being mated with at least a partial region of an inner surface of the recess portion.
Further, at least a partial area of the inner surface of the recess portion and the second side face are arc-shaped surfaces.
Further, the support piece further comprises a third side surface, the orthographic projection of the support piece on a preset plane perpendicular to the overturning axis is triangular, and the orthographic projections of the first side surface, the second side surface and the third side surface on the preset plane form three sides of the triangle; the inner surface of the concave part comprises a first inner surface and a second inner surface which are connected with each other, the second inner surface is positioned on one side of the first inner surface away from the first area, the second side surface is matched with the first inner surface, and the third side surface is matched with the second inner surface.
Further, when one of the carrying areas is turned to a position opposite to the other carrying area, the first side surface can be matched with the flexible display panel, and the second side surface is coplanar with the surface of the first area facing the flexible display panel.
Further, the bottom area of the concave part is smaller than the opening area of the concave part.
Further, the length of the first region is greater than the length of the recess in a direction perpendicular to the inversion axis.
Further, the bearing area further comprises a third area, the third area is located on one side, away from the first area, of the concave portion, and in the direction perpendicular to the overturning axis, the length of the concave portion is larger than that of the third area.
Further, a portion of the third region higher than the recess portion is in a rib structure, and an extending direction of the rib structure is parallel to the turning axis.
According to one aspect of the disclosure, a display module is provided, including a flexible display panel and the folding structure, the flexible display panel includes a first bending region and a second bending region contacting with the first bending region, an orthographic projection of the spacer on the flexible display panel covers the first bending region, and an orthographic projection of the recess on the flexible display panel is located in the second bending region.
Further, the first region is fixedly connected with the flexible display panel.
Further, a stainless steel supporting layer is arranged on one side, facing the bearing assembly, of the flexible display panel, and the supporting piece is fixedly connected with the stainless steel supporting layer, or the supporting piece and the stainless steel supporting layer are integrally formed.
According to one aspect of the present disclosure, a display device is provided, including the display module.
When the display device, the display module and the folding structure are used for bearing the flexible display panel, one bearing area can be overturned relative to the other bearing area, so that the flexible display panel can be folded through the folding mechanism; because the support piece rotates to the preset position, the support piece can be contacted with the folded flexible display panel, meanwhile, the free end is positioned at one side of the connecting end, which is close to the interval area, and an included angle is formed between the support piece positioned at the preset position and the bearing area, so that the area, which is contacted with the support piece, of the flexible display panel is bent relative to the bearing area, the bending degree of the area, which corresponds to the interval area, of the flexible display panel is reduced, the deformation of the area is reduced, the failure risk of the flexible display panel is reduced, and the flexible display panel can realize smaller bending radius.
Drawings
Fig. 1 is a schematic view of a folding display device in the related art.
Fig. 2 is a strain diagram of a flexible display panel of a related art folding display device.
Fig. 3 is a schematic view of a folding display device according to an embodiment of the present disclosure when unfolded.
Fig. 4 is a schematic view of a folding display device according to an embodiment of the present disclosure after folding.
Fig. 5 is a schematic view of a folding mechanism of an embodiment of the present disclosure.
Fig. 6 is a schematic plan view of a load bearing assembly of an embodiment of the present disclosure.
Fig. 7 is another plan schematic view of a load bearing assembly of an embodiment of the present disclosure.
Fig. 8 is a schematic plan view of a folding mechanism of an embodiment of the present disclosure.
Fig. 9 is a schematic view of a load bearing area in a folding mechanism of an embodiment of the present disclosure.
Fig. 10 is another schematic view of a load bearing area in a folding mechanism of an embodiment of the present disclosure.
Fig. 11 is a schematic diagram of a display module according to an embodiment of the disclosure.
Fig. 12 is a schematic view of a stainless steel support layer in a display module according to an embodiment of the disclosure.
Fig. 13 is a schematic diagram of the results of the simulation test.
Fig. 14 is a schematic diagram of the results of another simulation test.
Reference numerals illustrate: 1. a carrying area; 101. a recessed portion; 102. a first region; 103. a third region; 1011. a first inner surface; 1012. a second inner surface; 102. a first region; 103. a third region; 104. a rib structure; 2. a spacer; 3. a support; 301. a connection end; 302. a free end; 303. a first side; 304. a second side; 305. a third side; 4. a flexible display panel; 401. a first inflection region; 402. a second inflection region; 5. a folding plate; 6. a polarizer; 7. a cover plate; 8. a heat dissipation film layer; 9. a stainless steel support layer; 9011. and a through hole.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the disclosure as detailed in the accompanying claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
In the related art, as shown in fig. 1, after the flexible display panel 4 supported by the folding plate 5 is folded, the strain of the area a (the point of the starting arc of the folding) of the flexible display panel 4 is larger (as shown in fig. 2), so that the flexible display panel 4 has a higher failure risk, which limits the further development of the folding display device.
The embodiment of the disclosure provides a folding structure for folding a flexible display panel. As shown in fig. 3 and 4, the folding structure may comprise a carrier assembly and a support 3, wherein:
the carrier assembly is for carrying the flexible display panel 4. As shown in fig. 6, the carrier assembly comprises at least two carrier sections 1. Adjacent two carrying areas 1 are arranged at intervals to form a spacing area 2 between the two carrying areas 1. One carrying area 1 of the two adjacent carrying areas 1 can be turned over relative to the other carrying area 1 to fold or unfold the flexible display panel 4. As shown in fig. 5 and 8, the support 3 comprises opposite connecting ends 301 and free ends 302. The connection end 301 is connected to the side of the carrying area 1 facing the flexible display panel 4. The free end 302 is rotatable relative to the connecting end 301, and the axis of rotation of the free end 302 is parallel to the flip axis. In the process of overturning two adjacent carrying areas 1 to fold the flexible display panel 4, the supporting member 3 can rotate to a preset position contacting the flexible display panel 4, the free end 302 of the supporting member 3 located at the preset position is located at one side of the connecting end 301 near the spacing area 2, and the supporting member 3 located at the preset position forms an included angle with the carrying area 1.
The folding mechanism of the embodiment of the disclosure, when being used for carrying the flexible display panel 4, one carrying area 1 can be turned over relative to the other carrying area 1, so that the flexible display panel 4 can be folded by the folding mechanism; because the support 3 rotates to the preset position, the support 3 can be contacted with the folded flexible display panel 4, meanwhile, the free end 302 is positioned at one side of the connecting end 301 close to the spacing area 2, and the support 3 positioned at the preset position forms an included angle with the bearing area 1, so that the area where the flexible display panel 4 contacts with the support 3 is bent relative to the bearing area 1, the bending degree of the area of the flexible display panel 4 corresponding to the spacing area 2 is reduced, the deformation of the area is reduced, the failure risk of the flexible display panel 4 is reduced, and the flexible display panel 4 can realize smaller bending radius.
The following describes each part of the folding mechanism of the embodiment of the present disclosure in detail:
as shown in fig. 6, the carrying assembly has a plate shape to carry the flexible display panel 4, and is foldable. Wherein the carrier assembly may comprise two, three, four or more carrier zones 1. The plurality of carrying areas 1 together carry a flexible display panel 4. When the carrier assembly is unfolded, i.e. when the carrier assembly is in an unfolded state, the plurality of carrier regions 1 may be distributed along the first direction (X-direction in fig. 6), and two adjacent carrier regions 1 may be disposed at intervals to form a spacing region 2 between the two adjacent carrier regions 1. The spacers 2 each extend along the second direction (Y direction in fig. 6). The second direction may be perpendicular to the first direction. Wherein the number of spacers 2 may be one less than the number of carrier regions 1. For example, the carrier assembly may include a plurality of carrier plates, two adjacent carrier plates are disposed at intervals, each carrier plate forms the carrier region 1, and the interval region between the two carrier plates forms the interval region 2 of the carrier assembly.
One carrying area 1 of the two adjacent carrying areas 1 can be turned relative to the other carrying area 1, and the turning axis of the carrying area 1 can be parallel to the second direction and perpendicular to the first direction. Taking the number of the carrying areas 1 as two as an example, as shown in fig. 4, when one carrying area 1 is turned to a first position relative to the other carrying area 1, the two carrying areas 1 are oppositely arranged, and the carrying assembly is in a folded state so as to fold the flexible display panel 4; as shown in fig. 3, when one carrying area 1 is turned to the second position relative to the other carrying area 1, at least part of the areas of the surfaces of the two carrying areas 1 facing the flexible display panel 4 are coplanar, and the carrying assembly is in an unfolded state to unfold the flexible display panel 4. During folding of the flexible display panel 4, the area of the flexible display panel 4 corresponding to the spacer 2 is also folded about a bending axis. The bending axis may be parallel or coincident with the inversion axis.
As shown in fig. 5 and 7, each of the above-described carrying areas 1 may include a first area 102 and a second area. The first region 102 and the second region may be distributed along the first direction, and the second region is located between the first region 102 and the spacer 2. In the second direction, the length of the first region 102 and the length of the second region are equal to the length of the carrying area 1. The side of the second area facing the flexible display panel 4 is provided with a recess 101. The recess 101 may be in contact with the first region 102, and a boundary line of the recess 101 and the first region 102 may be parallel to the second direction. The surface of the first region 102 facing the flexible display panel 4 may be planar. Further, in the first direction, the length of the first region 102 may be greater than the length of the recess 101. As shown in fig. 7, the carrying area 1 of the present disclosure may further include a third area 103. The third region 103 may be located at a side of the recess 101 remote from the first region 102, and the third region 103 may be in contact with the recess 101. In the first direction, the length of the recess 101 may be greater than the length of the third region 103. As shown in fig. 9 and 10, a portion of the third area 103 higher than the recess 101 is a rib structure 104, and an extending direction of the rib structure 104 may be parallel to the inversion axis. The surface of the ridge structure 104 facing the first region 102 may constitute a partial region of the inner surface of the recess 101. The bottom area of the recess 101 may be smaller than the opening area of the recess 101. Further, from the bottom of the recess 101 to the opening of the recess 101, the cross-sectional area of the recess 101 gradually increases, i.e., the recess 101 is of a flared structure.
As shown in fig. 9, the inner surface of the recess 101 may include a first inner surface 1011 and a second inner surface 1012 connected to each other. The second inner surface 1012 may be located on a side of the first inner surface 1011 remote from the first region 102. The second inner surface 1012 may be the surface of the rib structure 104 facing the first region 102, but is not particularly limited in this disclosure. In an embodiment of the present disclosure, the first inner surface 1011 and the second inner surface 1012 are both planar, and a boundary line of the first inner surface 1011 and the second inner surface 1012 may be parallel to the second direction. In another embodiment of the present disclosure, the first inner surface 1011 is an arc-shaped surface, the second inner surface 1012 is a plane, and a boundary line of the first inner surface 1011 and the second inner surface 1012 is parallel to the second direction. In other embodiments of the present disclosure, the first inner surface 1011 and the second inner surface 1012 are each arcuate, and the first inner surface 1011 and the second inner surface 1012 are smoothly transitioned.
As shown in fig. 5, the support 3 may include a first side 303, and the first side 303 may be capable of being attached to the flexible display panel 4. The first side 303 may include two opposite sides, with both sides being parallel to the flip axis. The support 3 comprises opposite ends, one end being a connecting end 301 and the other end being a free end 302. One of the two opposite sides of the first side 303 is located at the connecting end 301, and the other side is located at the free end 302. The connection end 301 is connected to a side of the carrying area 1 facing the flexible display panel 4, the free end 302 is capable of rotating relative to the connection end 301, and the rotation axis of the free end 302 is parallel to the turning axis, that is, the support 3 is rotatably connected to the carrying area 1, and the rotation axis of the support 3 is parallel to the turning axis. Wherein the connection end 301 of the support member 3 may be connected to the first region 102. Specifically, the connection end 301 may be connected to the carrying area 1 by a hinge, but the embodiment of the present disclosure is not limited thereto. It should be noted that, when the support member 3 rotates to the preset position, the free end 302 may be located at a side of the connection end 301 near the spacer 2.
As shown in fig. 3, 5 and 9, taking the example that the carrying area 1 includes the recess 101, the supporting member 3 can enter the recess 101 under the rotation of the free end 302, and of course, the supporting member 3 can leave the recess 101 under the rotation of the free end 302. Taking the support 3 as an example, the support 3 includes a first side 303 and a second side 304, after the support 3 enters the recess 101, the first side 303 may be coplanar with a surface of the first region 102 facing the flexible display panel 4 to improve flatness of the flexible display panel 4 supported by the first side 303 and the first region 102, and at the same time, the second side 304 is mated with at least a partial region of an inner surface of the recess 101. It should be noted that, the term "after the supporting member 3 enters the recess 101" as used in the present disclosure means that the supporting member 3 completely enters the recess 101", that is," the supporting member 3 abuts against the inner surface of the recess 101 ". Taking the example that the inner surface of the recess 101 includes the first inner surface 1011 and the second inner surface 1012, the support 3 may further include a third side 305, and after the support 3 enters the recess 101, the second side 304 may be matched with the first inner surface 1011, that is, the second side 304 is adhered to the first inner surface 1011, and the second side 304 is similar to the shape and contour of the first inner surface 1011; the third side 305 may be mated with the second inner surface 1012, i.e., the third side 305 conforms to the second inner surface 1012, and the third side 305 is shaped and contoured to conform to the second inner surface 1012. When the first inner surface 1011 is an arc surface, the second side 304 may be an arc surface; when the first inner surface 1011 is planar, the second side 304 is planar. Taking the second side 304 as a plane as an example, when one carrying area 1 is turned to a position opposite to the other carrying area 1, the second side 304 is coplanar with the surface of the first area 102 facing the flexible display panel 4, and the first side 303 is matched with the flexible display panel 4.
The support 3 may have a triangular shape in orthographic projection on a predetermined plane. The preset plane is perpendicular to the overturning axis. Orthographic projections of the first side 303, the second side 304 and the third side 305 of the support 3 on a predetermined plane constitute three sides of the triangle. The triangle may be a right triangle, with the second side 304 and the third side 305 being disposed vertically. The number of the supporting members 3 may be twice the number of the above-mentioned spacers 2, and one supporting member 3 is provided at each side of each spacer 2.
The embodiment of the disclosure also provides a display module. The display module may comprise a flexible display panel 4 and a folded structure as described in any of the embodiments above. The flexible display panel 4 includes a substrate, an array substrate, a light emitting layer, a packaging layer, and a touch layer (FMLOC) stacked. The encapsulation layer is a thin film encapsulation layer (TFE) that may include a first inorganic encapsulation layer, an organic layer, and a second inorganic encapsulation layer disposed in a stack. Of course, as shown in fig. 11, the display module may further include a polarizer 6, a cover plate 7, a heat dissipation film 8, and a stainless steel support layer 9. The polarizer 6 is disposed on the touch layer, and the cover 7 is disposed on a side of the polarizer 6 facing away from the touch layer. The heat dissipation film layer 8 may be disposed on a side of the substrate of the flexible display panel 4 facing away from the array substrate. The heat dissipation film layer 8 may include an EMBO (embossed silica gel buffer material) layer, a Foam (Foam material) layer, a PI (polyimide film) layer, a Cu (copper) foil layer, a wave absorbing material layer, and the like, which are sequentially disposed. The stainless steel support layer 9 may be disposed on a side of the heat dissipation film layer 8 facing away from the polarizer 6.
As shown in fig. 3 and 4, the flexible display panel 4 may be supported on a plurality of carrying areas 1 of the carrying assembly. Specifically, the flexible display panel 4 may be carried in the first region 102 of each carrying area 1. The first region 102 may be fixedly coupled, e.g., bonded, with the flexible display panel 4, but the embodiment of the present disclosure is not limited thereto. The flexible display panel 4 may include a bending region. The inflection regions may include a first inflection region 401 and a second inflection region 402 in contact with the first inflection region 401. The front projection of the spacer region 2 of the carrying element on the flexible display panel 4 covers the first bending region 401, and the front projection of the recess 101 of the carrying element 1 on the flexible display panel 4 is located in the second bending region 402. The number of the first bending regions 401 may be plural, the plural first bending regions 401 are corresponding to the plural spacing regions 2 one to one, and two sides of any one of the first bending regions 401 may be respectively provided with a second bending region 402. The support 3 of the present disclosure may be fixedly connected, e.g. glued, to the flexible display panel 4. Specifically, the support 3 of the present disclosure may be fixedly connected with the flexible display panel 4. Specifically, the present disclosure may be fixedly connected with the stainless steel support layer 9 described above. In other embodiments of the present disclosure, the support 3 may also be integrally formed with the flexible display panel 4. In particular, the support 3 may be integrally formed with the stainless steel support layer 9. As shown in fig. 12, the stainless steel support layer 9 is provided with an open area 901 in a region corresponding to the above-mentioned bending area. The open area 901 is provided with a plurality of through holes 9011 distributed in an array. To enhance the buckling performance of open area 901.
Further, taking the bending radius of the first bending region 401 of the flexible display panel 4 as an example of 3mm, after the support member 3 enters the recess 101, the length of the support member 3 may be 4mm to 12mm, for example, 4mm, 6mm, 7mm, 8mm, 12mm, etc., in the first direction; the second side 304 of the support 3 is an arc-shaped surface, and the central angle of the second side 304 may be 1.28 ° -12 °, such as 1.28 °, 4 °, 8 °, 10 °, 11 °, 12 °, etc.
The embodiment of the disclosure also provides a display device. The display device may include the display module set described in the above embodiment. The display device can be a mobile phone, a tablet personal computer, a television and the like.
The folding mechanism, the display panel and the display device provided by the embodiment of the disclosure belong to the same inventive concept, and descriptions of related details and beneficial effects can be referred to each other, and are not repeated.
Simulation test
1. Compared with a folding display device without the support 3, the folding display device of the present disclosure has greatly reduced risk of failure, and is embodied as: the strain value of the second inorganic packaging layer is reduced from 1 to 0.8, the strain value of the first inorganic packaging layer is reduced from 1 to 0.9, the strain value of the touch control layer is reduced from 1 to 0.8, and the strain can be reduced by 10% -20%.
2. There are provided a folding display device in which the support 3 is not provided and a plurality of folding display devices of the embodiments of the present disclosure. For the plurality of folding display devices of the present disclosure, the length of the support 3 (the length of the support 3 in the first direction after entering the recess 101) is 4mm, 6mm, 8mm, 12mm in order. Regarding the second inorganic encapsulation layer, the strain of the folded display device in which the support 3 is not provided is regarded as 1; the support 3 obtained by testing has a minimum strain of the folded display device of length 8mm, which is less than 0.8. The test results are shown in fig. 13, and in fig. 13, a length of the support 3 of 0mm represents a folding display device in which the support 3 is not provided.
3. There are provided a folding display device in which the support 3 is not provided and a plurality of folding display devices of the embodiments of the present disclosure. For the plurality of folding display devices of the present disclosure, the central angles of the second side face 304 of the support 3 thereof are 1.28 °, 4 °, 8 °, 10 °, 11 °, 12 ° in order. Regarding the second inorganic encapsulation layer, the strain of the folded display device in which the support 3 is not provided is regarded as 1; the resulting folding display device with a 12 deg. central angle of the second side 304 has a minimum strain, which is approximately 0.8. The test results are shown in FIG. 14. In fig. 14, the central angle "none" represents a folded display device in which the support 3 is not provided.
The foregoing disclosure is not intended to be limited to the preferred embodiments of the present disclosure, but rather is to be construed as limited to the embodiments disclosed, and modifications and equivalent arrangements may be made in accordance with the principles of the present disclosure without departing from the scope of the disclosure.

Claims (12)

1. A folding structure for folding a flexible display panel, comprising:
the bearing assembly is used for bearing the flexible display panel and comprises at least two bearing areas, a spacing area is arranged between two adjacent bearing areas, and one bearing area of the two adjacent bearing areas can be overturned relative to the other bearing area so as to fold or unfold the flexible display panel;
the support piece comprises a connecting end and a free end, the connecting end is connected to one side of the bearing area, which faces the flexible display panel, the free end can rotate relative to the connecting end, and the rotation axis of the free end is parallel to the overturning axis of the bearing area;
in the process of overturning two adjacent bearing areas to fold the flexible display panel, the supporting piece can rotate to a preset position contacted with the flexible display panel, the free end of the supporting piece positioned at the preset position is positioned at one side of the connecting end close to the interval area, and an included angle is formed between the supporting piece positioned at the preset position and the bearing area;
the bearing area comprises a first area and a second area, the second area is positioned at one side of the first area, which is close to the interval area, a concave part is arranged at one side of the second area, which faces the flexible display panel, and the support piece can enter/leave the concave part under the rotation of the free end;
the support member includes a first side surface and a second side surface, the first side surface is coplanar with a surface of the first region facing the flexible display panel after the support member enters the recess, and the second side surface is mated with at least a partial region of an inner surface of the recess.
2. The folding structure of claim 1, wherein at least a portion of the inner surface of the recess and the second side are arcuate.
3. The folding structure of claim 1, wherein the support further comprises a third side, an orthographic projection of the support on a preset plane perpendicular to the inversion axis is triangular, and orthographic projections of the first side, the second side, and the third side on the preset plane constitute three sides of the triangle; the inner surface of the concave part comprises a first inner surface and a second inner surface which are connected with each other, the second inner surface is positioned on one side of the first inner surface away from the first area, the second side surface is matched with the first inner surface, and the third side surface is matched with the second inner surface.
4. A folding structure according to claim 3, wherein the first side is engageable with the flexible display panel when one of the carrying areas is flipped to a position disposed opposite the other carrying area, and the second side is coplanar with a surface of the first area facing the flexible display panel.
5. The folding structure of claim 1, wherein a bottom area of the recess is smaller than an opening area of the recess.
6. The folding structure of claim 1, wherein a length of the first region is greater than a length of the recess in a direction perpendicular to the inversion axis.
7. The folding structure of claim 1, wherein the carrying region further comprises a third region, the third region being located on a side of the recess remote from the first region, and wherein a length of the recess is greater than a length of the third region in a direction perpendicular to the flip axis.
8. The folding structure of claim 7, wherein a portion of the third region above the recess is a rib structure extending in a direction parallel to the inversion axis.
9. A display module, characterized by comprising a flexible display panel and the folding structure of any one of claims 1-5, wherein the flexible display panel comprises a first bending region and a second bending region contacting with the first bending region, an orthographic projection of the spacer on the flexible display panel covers the first bending region, and an orthographic projection of the recess on the flexible display panel is located in the second bending region.
10. The display module of claim 9, wherein the first region is fixedly coupled to the flexible display panel.
11. The display module of claim 9, wherein a stainless steel supporting layer is disposed on a side of the flexible display panel facing the bearing component, and the supporting member is fixedly connected with the stainless steel supporting layer, or the supporting member and the stainless steel supporting layer are integrally formed.
12. A display device comprising the display module of any one of claims 9-11.
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KR101727971B1 (en) * 2014-02-21 2017-04-18 삼성전자주식회사 Foldable device
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CN108665804A (en) * 2017-03-31 2018-10-16 元太科技工业股份有限公司 Folding electronic paper display devices and its manufacturing method
CN107067982A (en) * 2017-04-20 2017-08-18 武汉华星光电技术有限公司 A kind of folding type flexible display device
CN110058444B (en) * 2019-05-08 2022-04-12 武汉天马微电子有限公司 Display module and display device
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