WO2022021095A1 - 折叠显示面板、其制作方法及折叠显示装置 - Google Patents

折叠显示面板、其制作方法及折叠显示装置 Download PDF

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Publication number
WO2022021095A1
WO2022021095A1 PCT/CN2020/105293 CN2020105293W WO2022021095A1 WO 2022021095 A1 WO2022021095 A1 WO 2022021095A1 CN 2020105293 W CN2020105293 W CN 2020105293W WO 2022021095 A1 WO2022021095 A1 WO 2022021095A1
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WO
WIPO (PCT)
Prior art keywords
display module
foldable
ultra
glass cover
thin glass
Prior art date
Application number
PCT/CN2020/105293
Other languages
English (en)
French (fr)
Inventor
谢志豪
冯彬峰
李飞
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202080001380.4A priority Critical patent/CN114286972B/zh
Priority to PCT/CN2020/105293 priority patent/WO2022021095A1/zh
Priority to US17/285,975 priority patent/US20220304174A1/en
Publication of WO2022021095A1 publication Critical patent/WO2022021095A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • C09K2323/03—Viewing layer characterised by chemical composition
    • C09K2323/033—Silicon compound, e.g. glass or organosilicon
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a foldable display panel, a manufacturing method thereof, and a foldable display device.
  • the folding display terminal relies on the flexibility of the flexible display screen, allowing users to fold or flatten it, which has become a development trend of display terminals. . Specifically, when the folding display terminal is in the folded state, the area is small, which is convenient for the user to carry; when the folding display terminal is in the flat state, the display area is large, and the visual experience effect is better.
  • an embodiment of the present disclosure provides a folding display panel, including:
  • the display module includes: a first foldable part, and a first flat part located on both sides of the first foldable part;
  • the ultra-thin glass cover plate is located on the side where the light-emitting surface of the display module is located; the ultra-thin glass cover plate includes: a second foldable part, and a second flat part located on both sides of the second foldable part; Wherein, the orthographic projection of the second foldable portion on the display module covers the first foldable portion, and the orthographic projection of the second flat portion on the display module covers the first flat portion Department.
  • the edge of the display module and the edge of the ultra-thin glass cover plate are bent toward the side away from the light-emitting surface of the display module.
  • the length of the edge of the ultra-thin glass cover plate bent toward the side away from the light-emitting surface of the display module is greater than the length of the display module.
  • the length that the edge is bent toward the side away from the light-emitting surface of the display module is greater than the length of the display module.
  • the elastic modulus of the bending edge of the ultra-thin glass cover plate is greater than the elastic modulus of the second foldable portion, the second flat elastic modulus of the part.
  • the elastic modulus of the bending edge of the ultra-thin glass cover plate is greater than or equal to 70 Gpa and less than or equal to 75 Gpa.
  • the hardness value of the bending edge of the ultra-thin glass cover plate is greater than or equal to 7H.
  • the thickness of the second foldable portion and the thickness of the second flat portion are , and the thickness of the bent edge of the ultra-thin glass cover plate is the same.
  • the thickness of the ultra-thin glass cover plate is 30 ⁇ m-70 ⁇ m.
  • the strengthening depth of the ultra-thin glass cover plate is greater than or equal to 6 ⁇ m, and the strengthening compressive stress is greater than or equal to 450 MPa.
  • the curvature of the bending edge of the display module is greater than 0° and less than or equal to 90°.
  • the arcs of the first foldable portion and the second foldable portion are greater than 0° and less than or equal to 180°.
  • the above-mentioned foldable display panel provided by the embodiment of the present disclosure further includes: a support plate located on the side of the display module away from the ultra-thin glass cover plate, the shape of the support plate is the same as that of the display module.
  • the mods have the same shape.
  • the orthographic projection of the support plate on the light emitting surface of the display module completely covers the display module.
  • the orthographic projection of the support plate on the light emitting surface of the display module is at least 0.2 mm outward and at most 0.2 mm outward relative to the display module. 0.5mm.
  • an embodiment of the present disclosure also provides a folding display device, comprising: a casing, a folding display panel fixed on the casing, and a rotating shaft hinged with the casing; wherein,
  • the folding display panel is the above-mentioned folding display panel
  • the rotating shaft is configured to drive the casing to bend or flatten together with the folding display panel.
  • the casing includes: a first casing and a second casing, and the first casing and the second casing pass through the rotating shaft Turn the connection.
  • the first foldable portion corresponds to an area between the first casing and the second casing, and the first foldable portion is two The first flat portion and the bent edge of the side are accommodated in the first casing and the second casing, respectively.
  • the orthographic projection of the rotating shaft on the light-emitting surface of the display module coincides with the bending axis of the first foldable portion.
  • the folding display device further comprises: an adhesive layer located between the casing and the end face of the bending edge of the display module.
  • an embodiment of the present disclosure also provides a method for manufacturing the above-mentioned folded display panel, including:
  • a display module is made, the display module includes: a first foldable part, and a first flat part located on both sides of the first foldable part;
  • the ultra-thin glass cover plate includes: a second foldable part, and a second flat part located on both sides of the second foldable part;
  • the side where the light-emitting surface of the display module is located is attached to the ultra-thin glass cover plate, so that the orthographic projection of the second foldable portion on the display module covers the first foldable portion, The orthographic projection of the second flat portion on the display module covers the first flat portion.
  • manufacturing an ultra-thin glass cover plate specifically includes:
  • the flat glass is heated and softened at a temperature of 580° C. to 710° C. and formed in a mold. After an annealing process, an ultra-thin glass cover plate with curved edges is obtained, and the ultra-thin glass cover plate further includes a second foldable glass cover. and a second flat portion between the second foldable portion and the curved edge.
  • the support plate is attached to the side of the display module away from the ultra-thin glass cover plate; wherein, the support plate completely covers the display module.
  • FIG. 1 is a schematic structural diagram of a foldable display panel according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a folding display device according to an embodiment of the present disclosure
  • FIG. 3 is another schematic structural diagram of a folding display device provided by an embodiment of the present disclosure.
  • Fig. 4 is the enlarged structural schematic diagram of P region in Fig. 2 and Fig. 3;
  • FIG. 5 is another schematic structural diagram of a folding display device provided by an embodiment of the present disclosure.
  • an embodiment of the present disclosure provides a foldable display panel, as shown in FIG. 1 , including:
  • a display module 01 the display module 01 includes: a first foldable part A1, and a first flat part B1 located on both sides of the first foldable part A1;
  • the ultra-thin glass cover plate 02 is located on the side where the light-emitting surface of the display module 01 is located; the ultra-thin glass cover plate 02 includes: a second foldable part A2, and a second flat part B2 on both sides of the second foldable part A2 wherein, the orthographic projection of the second foldable portion A2 on the display module 01 covers the first foldable portion A1, and the orthographic projection of the second flat portion B2 on the display module 01 covers the first flat portion B1.
  • an ultra-thin glass cover plate 02 is used to protect the display module 01. Because the ultra-thin glass cover plate 02 not only has the rigidity of glass material, but also takes into account a certain degree of bending, Therefore, the folded display panel has good bendability and sufficient rigidity, so as to minimize the wrinkling phenomenon caused by folding.
  • the first foldable portion A1 and the first flat portion B1 of the display module 01 are located on the same plane.
  • the second foldable portion A2 and the second flat portion of the ultra-thin glass cover 02 are on the same plane.
  • Section B2 is also in the same plane, as shown in FIG. 2 .
  • the arc of the first foldable portion A1 is greater than 0° and less than or equal to 180°
  • the arc of the second foldable portion A2 is greater than 0° and less than or equal to 180°; for example, FIG. 3
  • the bending arc of the first foldable part A1 and the second foldable part A2 is 180°.
  • the display module 01 may be a flexible organic light-emitting display panel, specifically an organic electroluminescence (OLED) flexible display panel, and the display module 01 may also be other flexible and bendable screens, for example, a micro-luminescence (Micro LED) flexible display panel, quantum dot light-emitting (QD) flexible display panel, etc., which are not limited here.
  • the display module 01 and the ultra-thin glass cover plate 02 can be fixed by a first adhesive layer 03, such as an optical (OCA) adhesive layer or a polyurethane (TPU) adhesive layer, etc.
  • the bonding is performed by electrostatic adsorption, which is not limited here.
  • OCA optical
  • TPU polyurethane
  • the display module 01 may include a driving backplane 101, a light emitting device layer 102 electrically connected to the driving backplane 101, and a polarizer 103; wherein the light emitting device layer 102 includes a plurality of Light-emitting devices, each of which includes but is not limited to an anode and a cathode, and a light-emitting functional layer between the anode and the cathode.
  • the edge C1 of the display module 01 and the edge C2 of the ultra-thin glass cover plate 02 are oriented toward the light-emitting surface facing away from the display module 01.
  • the side is bent to form a curved arc surface, so as to enhance the appearance beauty of the folded display panel and the ductility of the display screen.
  • the curvature of the bending edge C1 of the display module 01 is greater than 0° and less than or equal to 90°.
  • the edge C2 of the ultra-thin glass cover plate 02 faces The bending length L2 of the side away from the light-emitting surface of the display module 01 is greater than the bending length L1 of the edge C1 of the display module 01 toward the side away from the light-emitting surface of the display module 01 .
  • the difference between L2 and L1 may be greater than or equal to 0.2 mm and less than or equal to 0.5 mm.
  • the elastic modulus of the bending edge C2 of the ultra-thin glass cover plate 02 is greater than the elastic modulus of the second foldable portion A2 and the elastic modulus of the second flat portion B2.
  • Elastic Modulus In some embodiments, the elastic modulus of the bending edge C2 of the ultra-thin glass cover plate 02 is greater than or equal to 70 Gpa and less than or equal to 75 Gpa (eg, 72 Gpa), and the hardness value of the bending edge C2 of the ultra-thin glass cover plate 02 is greater than or equal to 72 Gpa. or equal to 7H.
  • the elastic modulus is a measure of the resistance of an object to elastic deformation, and from a microscopic point of view, it is a reflection of the bonding strength between atoms, ions or molecules.
  • the elastic modulus of the edge C2 of the ultra-thin glass cover plate 02 By designing the elastic modulus of the edge C2 of the ultra-thin glass cover plate 02 to be larger, the ability of the edge C2 of the ultra-thin glass cover plate 02 to absorb stress and impact resistance can be better. Therefore, warpage deformation is not easy to occur, and therefore, there is no peeling problem between the edge C2 of the ultra-thin glass cover plate 02 and the edge C1 of the display module 01 .
  • the edge of the ultra-thin glass is bent (such as hot bending) and hardened (such as changing the composition structure or adjusting the proportion of elements) to form an ultra-thin ultra-thin glass with curved edges.
  • the elastic modulus of the edge C2 of the ultra-thin glass cover plate 02 is larger than that of other regions (ie, the second foldable portion A2 and the second flat portion B2).
  • the second The thickness of the foldable portion A2, the thickness of the second flat portion B2, and the thickness of the bent edge C2 of the ultra-thin glass cover plate 02 are the same.
  • the thickness of the ultra-thin glass cover plate 02 the greater its rigidity and impact resistance, but its bending and flatness will be affected to a certain extent; and the smaller the thickness, the greater its bending and flatness.
  • the hardness will be better, but the hardness and impact resistance will be reduced.
  • the thickness of the ultra-thin glass cover plate 02 tends to be thinner, but the aforementioned hardness, flatness and impact resistance must be taken into consideration.
  • the thickness of the ultra-thin glass cover plate 02 is 30 ⁇ m-70 ⁇ m, so that the ultra-thin glass cover plate 02 has a thickness of 30 ⁇ m-70 ⁇ m.
  • 02It has good bendability, sufficient hardness and reliable impact resistance while being ultra-thin.
  • the strengthening depth of the ultra-thin glass cover plate 02 needs to be Greater than or equal to 6 ⁇ m, the strengthening compressive stress needs to be greater than or equal to 450MPa.
  • the strengthening depth of the ultra-thin glass cover plate 02 with a thickness of 30 ⁇ m is greater than or equal to 6 ⁇ m, and the strengthening compressive stress is greater than or equal to 450 MPa; the strengthening depth of the ultra-thin glass cover plate 02 with a thickness of 50 ⁇ m is greater than or equal to 7 ⁇ m, and the strengthening pressure The stress is greater than or equal to 500 MPa; the strengthening depth of the ultra-thin glass cover plate 02 with a thickness of 70 ⁇ m is greater than or equal to 9 ⁇ m, and the strengthening compressive stress is greater than or equal to 550 MPa.
  • the above-mentioned foldable display panel provided by the embodiment of the present disclosure further includes: a support plate (Bracket) 04 located on the side of the display module 01 away from the ultra-thin glass cover plate 02, the support plate
  • the shape of 04 is the same or approximately the same as the shape of the display module 01, so as to effectively support and protect the display module 01.
  • the orthographic projection of the support plate 04 on the light-emitting surface of the display module 01 completely covers the display module 01; Expand 0.2mm-0.5mm, such as 0.2mm, 0.3mm, 0.4mm, 0.5mm, etc.
  • the material of the support plate 04 may be stainless steel (eg, SUS, Patten-SUS), or titanium alloy or the like.
  • the curved edge of the support plate 04 can be thickened relative to other regions; or the curved edge of the support plate 04 can be set to a double-layer structure, while other regions are set to a single-layer structure.
  • the support plate 04 and the display module 01 can be fixed by a second adhesive layer 04, such as an optical adhesive layer (OCA) or a grid adhesive layer (FOAM).
  • OCA optical adhesive layer
  • FOAM grid adhesive layer
  • the display module 01 is sandwiched between the ultra-thin glass cover plate 02 and the support plate 04, the three form a sandwich structure, and the edges of the three are arc surfaces with the same curvature, which realizes a difference.
  • the new folded product of the 3D curved structure of the flat folded product in the related art solves the problem of leaving obvious folds and folds at the folded position.
  • an embodiment of the present disclosure further provides a folding display device, as shown in FIG. 2 and FIG. 3 , comprising: a casing 06 , a folding display panel fixed on the casing 06 , and a folding display panel hinged to the casing 06 .
  • Spindle 07 of which,
  • the folding display panel is the above-mentioned folding display panel
  • the rotating shaft 07 is configured to drive the casing 06 to bend or flatten together with the folding display panel.
  • the implementation of the display device provided by the embodiment of the present disclosure may refer to the implementation of the above-mentioned folding display panel provided by the embodiment of the present disclosure. It is not repeated here.
  • the folding display device can be any product or component with display function, such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, a navigator, a smart watch, a fitness wristband, a personal digital assistant, etc.
  • the other essential components of the folding display device should be understood by those of ordinary skill in the art, and will not be repeated here, nor should it be regarded as a limitation of the present disclosure.
  • the casing 06 includes: a first casing 601 and a second casing 602 , and a first casing 601 and a second casing 602 is rotatably connected through the shaft 07.
  • the first foldable part A1 corresponds to the area between the first casing 601 and the second casing 602, and the first flat part B1 and the bending edge C1 on both sides of the first foldable part A1 are respectively accommodated
  • the first case 601 and the second case 602 surrounds the first flat part B1 and the bent edge C1 on the left side of the first foldable part A1
  • the second case 602 surrounds the first foldable part A1.
  • the orthographic projection of the rotating shaft 07 on the light-emitting surface of the display module 01 coincides with the bending axis of the first foldable portion A1.
  • the bending length of the ultra-thin glass cover plate 02 and the support plate 04 is greater than the bending length of the display module 01 between them, it will cause the end face of the bending edge of the ultra-thin glass cover plate 02 and the support plate In the case where the end faces of the bent edges of 04 are all in contact with the housing 06, there is a gap between the end faces of the bent edges of the display module 01 and the housing 06.
  • the gap between the casing 06 and the end face of the bending edge of the display module 01 can also be filled with an adhesive layer, such as foam, dustproof glue and other insulating materials to better protect the display module 01 .
  • components such as a battery and a main board may also be arranged, which are not limited herein.
  • the embodiment of the present disclosure also provides a method for manufacturing the above-mentioned folding display panel. Since the principle of solving the problem of the manufacturing method is similar to the principle of solving the problem of the above-mentioned folding display panel, the manufacturing method provided by the embodiment of the present disclosure provides For the implementation of the method, reference may be made to the implementation of the above-mentioned folded display panel provided by the embodiments of the present disclosure, and repeated details will not be repeated.
  • the manufacturing method of the above-mentioned folding display panel provided by the embodiment of the present disclosure may include the following steps:
  • a display module is made, the display module includes: a first foldable part, and a first flat part located on both sides of the first foldable part;
  • the ultra-thin glass cover plate includes: a second foldable part, and a second flat part located on both sides of the second foldable part;
  • the side where the light-emitting surface of the display module is located is attached to the ultra-thin glass cover, so that the orthographic projection of the second foldable part on the display module covers the first foldable part, and the second flat part is on the display module.
  • the orthographic projection covers the first flat portion.
  • manufacturing an ultra-thin glass cover plate can be specifically implemented by the following steps:
  • the flat glass is heated and softened at a temperature of 580° C. to 710° C. to be formed in a mold, and after an annealing process, an ultra-thin glass cover plate with curved edges is obtained, and the ultra-thin glass cover plate further includes a second foldable portion, and A second flat portion between the second foldable portion and the curved edge.
  • the heating time is not limited as long as the effect of heating and softening can be achieved. Exemplarily, when the heating temperature is high, the glass softens quickly, so the heating time is slightly shorter; and when the heating temperature is low, the time required for the glass to soften is longer.
  • the edge of the etched steel sheet is punched to form a support plate with a curved edge, wherein the curvature of the edge of the support plate is similar or the same as the curvature of the edge of the ultra-thin glass cover plate; it should be noted that, in order to increase the support plate It can also punch holes in the support plate before stamping, that is, make a plurality of through holes that penetrate the support plate in the thickness direction;
  • the support plate is attached to the side of the display module away from the ultra-thin glass cover; wherein, the support plate completely covers the display module.
  • the above-mentioned foldable display panel, a method for manufacturing the same, and a foldable display device provided by the embodiments of the present disclosure include: a display module, the display module includes: a first foldable part, and a first flat panel located on both sides of the first foldable part an ultra-thin glass cover plate, located on the side where the light-emitting surface of the display module is located; the ultra-thin glass cover plate includes: a second foldable part, and a second flat part located on both sides of the second foldable part;
  • the orthographic projection of the two foldable parts on the display module covers the first foldable part, and the orthographic projection of the second flat part on the display module covers the first flat part.
  • an ultra-thin glass cover plate is used to replace the PI cover plate or PET cover plate in the related art to protect the display module. Therefore, the foldable display panel has good bendability and sufficient rigidity, so as to minimize the wrinkling phenomenon caused by folding.

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  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
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  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

本公开提供了一种折叠显示面板、其制作方法及折叠显示装置，包括：显示模组，该显示模组包括：第一可折叠部，以及位于第一可折叠部两侧的第一平坦部；超薄玻璃盖板，位于显示模组的出光面所在侧；该超薄玻璃盖板包括：第二可折叠部，以及位于第二可折叠部两侧的第二平坦部；其中，第二可折叠部在显示模组上的正投影覆盖第一可折叠部，第二平坦部在显示模组上的正投影覆盖第一平坦部。

Description

折叠显示面板、其制作方法及折叠显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种折叠显示面板、其制作方法及折叠显示装置。
背景技术
随着显示技术的不断发展，手机等显示终端的功能越来越多样化，其中折叠显示终端依赖于柔性显示屏的柔性，使得用户可以将其进行折叠或展平，成为显示终端的一个发展趋势。具体地，在折叠显示终端处于折叠状态时，面积较小，便于用户携带；在折叠显示终端处于展平状态时，显示面积较大，视觉体验效果更好。
发明内容
一方面，本公开实施例提供了一种折叠显示面板，包括：
显示模组，所述显示模组包括：第一可折叠部，以及位于所述第一可折叠部两侧的第一平坦部；
超薄玻璃盖板，位于所述显示模组的出光面所在侧；所述超薄玻璃盖板包括：第二可折叠部，以及位于所述第二可折叠部两侧的第二平坦部；其中，所述第二可折叠部在所述显示模组上的正投影覆盖所述第一可折叠部，所述第二平坦部在所述显示模组上的正投影覆盖所述第一平坦部。
可选地，在本公开实施例提供的上述折叠显示面板中，所述显示模组的边缘和所述超薄玻璃盖板的边缘朝向背离所述显示模组的出光面一侧弯折。
可选地，在本公开实施例提供的上述折叠显示面板中，所述超薄玻璃盖板的边缘朝向背离所述显示模组的出光面一侧弯折的长度，大于所述显示模组的边缘朝向背离所述显示模组的出光面一侧弯折的长度。
可选地，在本公开实施例提供的上述折叠显示面板中，所述超薄玻璃盖 板的弯折边缘的弹性模量大于所述第二可折叠部的弹性模量、所述第二平坦部的弹性模量。
可选地，在本公开实施例提供的上述折叠显示面板中，所述超薄玻璃盖板的弯折边缘的弹性模量大于或等于70Gpa且小于或等于75Gpa。
可选地，在本公开实施例提供的上述折叠显示面板中，所述超薄玻璃盖板的弯折边缘的硬度值大于或等于7H。
可选地，在本公开实施例提供的上述折叠显示面板中，在垂直于所述显示模组的出光面的方向上，所述第二可折叠部的厚度、所述第二平坦部的厚度、以及所述超薄玻璃盖板的弯折边缘的厚度相同。
可选地，在本公开实施例提供的上述折叠显示面板中，在垂直于所述显示模组的出光面的方向上，所述超薄玻璃盖板的厚度为30μm-70μm。
可选地，在本公开实施例提供的上述折叠显示面板中，所述超薄玻璃盖板的强化深度大于或等于6μm，强化压应力大于或等于450MPa。
可选地，在本公开实施例提供的上述折叠显示面板中，所述显示模组的弯折边缘的弧度大于0°且小于或等于90°。
可选地，在本公开实施例提供的上述折叠显示面板中，在弯折状态下，所述第一可折叠部和所述第二可折叠部的弧度大于0°且小于或等于180°。
可选地，在本公开实施例提供的上述折叠显示面板中，还包括：位于所述显示模组背离所述超薄玻璃盖板一侧的支撑板，所述支撑板的形状与所述显示模组的形状相同。
可选地，在本公开实施例提供的上述折叠显示面板中，所述支撑板在所述显示模组的出光面上的正投影完全覆盖所述显示模组。
可选地，在本公开实施例提供的上述折叠显示面板中，所述支撑板在所述显示模组的出光面上的正投影相对于所述显示模组至少外扩0.2mm且至多外扩0.5mm。
另一方面，本公开实施例还提供了一种折叠显示装置，包括：壳体，固定于所述壳体上的折叠显示面板，以及与所述壳体铰接的转轴；其中，
所述折叠显示面板为上述折叠显示面板；
所述转轴被配置为带动所述壳体与所述折叠显示面板一起弯折或展平。
可选地，在本公开实施例提供的上述折叠显示装置中，所述壳体包括：第一壳体和第二壳体，所述第一壳体和所述第二壳体通过所述转轴转动连接。
可选地，在本公开实施例提供的上述折叠显示装置中，所述第一可折叠部与所述第一壳体和所述第二壳体之间的区域对应，第一可折叠部两侧的第一平坦部和弯折边缘分别容置于所述第一壳体和所述第二壳体。
可选地，在本公开实施例提供的上述折叠显示装置中，所述转轴在所述显示模组的出光面上的正投影与所述第一可折叠部的弯曲轴重合。
可选地，在本公开实施例提供的上述折叠显示装置中，还包括：位于所述壳体与所述显示模组的弯折边缘的端面之间的粘结层。
另一方面，本公开实施例还提供了一种上述折叠显示面板的制作方法，包括：
制作一显示模组，所述显示模组包括：第一可折叠部，以及位于所述第一可折叠部两侧的第一平坦部；
制作一超薄玻璃盖板，所述超薄玻璃盖板包括：第二可折叠部，以及位于所述第二可折叠部两侧的第二平坦部；
将所述显示模组的出光面所在侧与所述超薄玻璃盖板进行贴合，使得所述第二可折叠部在所述显示模组上的正投影覆盖所述第一可折叠部，所述第二平坦部在所述显示模组上的正投影覆盖所述第一平坦部。
可选地，在本公开实施例提供的上述制作方法中，制作一超薄玻璃盖板，具体包括：
提供厚度为30μm-70μm的平面玻璃；
采用580℃-710℃的温度对所述平面玻璃加热软化在模具中成型，再经退火制程后，获得边缘弯曲的超薄玻璃盖板，且所述超薄玻璃盖板还包括第二可折叠部、以及位于所述第二可折叠部与弯曲边缘之间的第二平坦部。
可选地，在本公开实施例提供的上述制作方法中，其中，在将所述显示 模组的出光面所在侧与所述超薄玻璃盖板进行贴合之后，还包括：
提供一厚度大于或等于0.1mm的钢片；
对所述钢片进行蚀刻，使得蚀刻后的所述钢片的形状与所述平面玻璃的形状相似；
对蚀刻后的所述钢片的边缘进行冲压成型，形成边缘弯曲的支撑板，其中，所述支撑板的边缘的曲率与所述超薄玻璃盖板的边缘的曲率相似；
将所述支撑板贴合于所述显示模组背离所述超薄玻璃盖板的一侧；其中，所述支撑板完全覆盖所述显示模组。
附图说明
图1为本公开实施例提供的折叠显示面板的结构示意图；
图2为本公开实施例提供的折叠显示装置的一种结构示意图；
图3为本公开实施例提供的折叠显示装置的又一种结构示意图；
图4为图2和图3中P区域的放大结构示意图；
图5为本公开实施例提供的折叠显示装置的又一种结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。需要注意的是，附图中各图形的尺寸和形状不反映真实比例，目的只是示意说明本公开内容。并且自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其它实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开说明书以及权利要求书 中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“内”、“外”、“上”、“下”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在目前市面上的折叠显示终端中，全是采用聚酰亚胺(PI)、聚对苯二甲酸乙二醇酯(PET)等柔性材料制作显示模组的盖板(Cover window)。由于PI的柔性较好、刚性不足，导致折叠显示终端在由折叠状态展平时，其折叠区域容易出现褶皱现象。
针对相关技术中存在的上述问题，本公开实施例提供了一种折叠显示面板，如图1所示，包括：
显示模组01，该显示模组01包括：第一可折叠部A1，以及位于第一可折叠部A1两侧的第一平坦部B1；
超薄玻璃盖板02，位于显示模组01的出光面所在侧；该超薄玻璃盖板02包括：第二可折叠部A2，以及位于第二可折叠部A2两侧的第二平坦部B2；其中，第二可折叠部A2在显示模组01上的正投影覆盖第一可折叠部A1，第二平坦部B2在显示模组01上的正投影覆盖第一平坦部B1。
在本公开实施例提供的上述折叠显示面板中，采用超薄玻璃盖板02来保护显示模组01，由于超薄玻璃盖板02不但具备玻璃材料的刚性特性，而且兼顾一定的弯折性，因此，使得折叠显示面板具备较好的可弯折性和足够的硬度，从而最大化减轻了折叠导致的褶皱现象。
具体地，在展平状态下，显示模组01的第一可折叠部A1和第一平坦部B1位于同一平面，相应地，超薄玻璃盖板02的第二可折叠部A2和第二平坦部B2也位于同一平面，如图2所示。在弯折状态下，第一可折叠部A1的弧度大于0°且小于或等于180°，相应地第二可折叠部A2的弧度大于0°且小于或等于180°；示例性地，图3具体示出了第一可折叠部A1和第二折叠 部A2的弯折弧度为180°。
显示模组01可以是具有柔性的有机发光显示面板，具体可以为有机电致发光(OLED)柔性显示面板，显示模组01亦可以为其他具有柔性能够弯曲的屏体，例如，微发光(Micro LED)柔性显示面板、量子点发光(QD)柔性显示面板等，在此不做限定。另外，如图4所示，显示模组01与超薄玻璃盖板02之间可通过第一胶粘层03进行固定，例如光学(OCA)胶层或聚氨酯(TPU)胶层等，亦可通过静电吸附贴合，在此不做限定。在一些实施例中，如图2所示，显示模组01可以包括驱动背板101、与驱动背板101电连接的发光器件层102，以及偏光片103；其中，发光器件层102包括多个发光器件，每一发光器件包括但不限于阳极和阴极、以及位于阳极和阴极之间的发光功能层。
可选地，在本公开实施例提供的上述折叠显示面板中，如图1所示，显示模组01的边缘C1和超薄玻璃盖板02的边缘C2朝向背离显示模组01的出光面一侧弯折，形成弯曲的弧面，以增强折叠显示面板的外观美感和显示画面的延展性。在一些实施例中，显示模组01的弯折边缘C1的弧度大于0°且小于或等于90°。
可选地，在本公开实施例提供的上述折叠显示面板中，为实现超薄玻璃盖板02对显示模组01的保护效果，如图1所示，超薄玻璃盖板02的边缘C2朝向背离显示模组01的出光面一侧弯折的长度L2，大于显示模组01的边缘C1朝向背离显示模组01的出光面一侧弯折的长度L1。示例性地，L2与L1的差值可以大于或等于0.2mm且小于或等于0.5mm。
可选地，在本公开实施例提供的上述折叠显示面板中，超薄玻璃盖板02的弯折边缘C2的弹性模量大于第二可折叠部A2的弹性模量、第二平坦部B2的弹性模量。在一些实施例中，超薄玻璃盖板02的弯折边缘C2的弹性模量大于或等于70Gpa且小于或等于75Gpa(例如72Gpa)，超薄玻璃盖板02的弯折边缘C2的硬度值大于或等于7H。
应当理解的是，从宏观角度来说，弹性模量是衡量物体抵抗弹性变形能 力大小的尺度，从微观角度来说，则是原子、离子或分子之间键合强度的反映。当超薄玻璃盖板02的边缘C2被弯曲成型后，超薄玻璃盖板02的边缘C2承受有拉伸应力和压缩应力，超薄玻璃盖板02的第二可折叠部A2和第二平坦部B2主要受拉伸应力，通过将超薄玻璃盖板02的边缘C2的弹性模量设计较大，可以使得超薄玻璃盖板02的边缘C2吸收应力的能力和抗冲击的能力较佳，从而不容易发生翘曲形变，因此，超薄玻璃盖板02的边缘C2与显示模组01的边缘C1之间不会产生剥离(peeling)问题。
在具体实施时，普通玻璃加工成超薄玻璃后，通过对超薄玻璃的边缘进行做弯(比如热弯)和硬化处理(比如更改成分结构或调整元素比例)，形成具有弯曲边缘的超薄玻璃盖板02。并且经过上述处理，超薄玻璃盖板02的边缘C2的弹性模量大于其他区域(即第二可折叠部A2和第二平坦部B2)的弹性模量。
可选地，在本公开实施例提供的上述折叠显示面板中，为使得超薄玻璃盖板02整体的弯折性和硬度均一适中，在垂直于显示模组的出光面的方向上，第二可折叠部A2的厚度、第二平坦部B2的厚度、以及超薄玻璃盖板02的弯折边缘C2的厚度相同。
容易理解，超薄玻璃盖板02的厚度越大，则其刚度和抗冲击性能有所增强，但其弯折性、平面度会受到一定的影响；而厚度越小，其弯折性和平面度会更佳，但硬度和抗冲击性能会有所下降。此外，为利于例如手机终端产品的内部空间设计，超薄玻璃盖板02的厚度趋于更薄，但又要兼顾前述的硬度、平面度及抗冲击性能。较佳地，在本公开实施例提供的上述显示模组中，在垂直于显示模组的出光面的方向上，超薄玻璃盖板02的厚度为30μm-70μm，以使超薄玻璃盖板02超薄化的同时具备较好的可弯折性、足够的硬度及可靠性的抗冲击性能。
可选地，在本公开实施例提供的上述折叠显示面板中，为使得超薄玻璃盖板02的可弯折性、硬度及抗冲击性能均较好，超薄玻璃盖板02的强化深度需要大于或等于6μm，强化压应力需要大于或等于450MPa。示例性地，厚 度为30μm的超薄玻璃盖板02的强化深度大于或等于6μm，强化压应力大于或等于450MPa；厚度为50μm的超薄玻璃盖板02的强化深度大于或等于7μm，强化压应力大于或等于500MPa；厚度为70μm的超薄玻璃盖板02的强化深度大于或等于9μm，强化压应力大于或等于550MPa。
可选地，在本公开实施例提供的上述折叠显示面板中，如图1所示，还包括：位于显示模组01背离超薄玻璃盖板02一侧的支撑板(Bracket)04，支撑板04的形状与显示模组01的形状相同或大致相同，以实现对显示模组01的有效支撑和保护。在一些实施例中，为全面保护显示模组01，支撑板04在显示模组01的出光面上的正投影完全覆盖显示模组01；具体地，支撑板04可以相对于显示模组01外扩0.2mm-0.5mm，例如0.2mm、0.3mm、0.4mm、0.5mm等。可选地，支撑板04的材料可以为不锈钢(例如SUS、Patten-SUS)、或钛合金等。为实现较好的支撑效果，可对支撑板04的弯曲边缘相对于其他区域进行加厚；或将支撑板04的弯曲边缘设置为双层结构，而其他区域设置为单层结构。此外，支撑板04与显示模组01之间具体可以通过第二胶粘层04进行固定，例如光学胶层(OCA)或网格胶层(FOAM)等。
由以上描述可见，显示模组01被夹在超薄玻璃盖板02与支撑板04之间，三者形成了夹心结构，且三者的边缘为具有相同曲率的弧面，实现了一种区别于相关技术中平面折叠产品的3D曲面结构的新形态折叠产品，同时解决了在折叠位置留下很明显折痕褶皱的问题。
另一方面，本公开实施例还提供了一种折叠显示装置，如图2和图3所示，包括：壳体06，固定于壳体06上的折叠显示面板，以及与壳体06铰接的转轴07；其中，
折叠显示面板为上述折叠显示面板；
转轴07被配置为带动壳体06与折叠显示面板一起弯折或展平。
由于该折叠显示装置解决问题的原理与上述折叠显示面板解决问题的原理相似，因此，本公开实施例提供的该显示装置的实施可以参见本公开实施例提供的上述折叠显示面板的实施，重复之处不再赘述。另外，该折叠显示 装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪、智能手表、健身腕带、个人数字助理等任何具有显示功能的产品或部件。对于折叠显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本公开的限制。
可选地，在本公开实施例提供的上述折叠显示装置中，如图5所示，壳体06包括：第一壳体601和第二壳体602，第一壳体601和第二壳体602通过转轴07转动连接。可选地，第一可折叠部A1与第一壳体601和第二壳体602之间的区域对应，第一可折叠部A1两侧的第一平坦部B1和弯折边缘C1分别容置于第一壳体601和第二壳体602，使得第一壳体601包围第一可折叠部A1左侧的第一平坦部B1和弯折边缘C1，第二壳体602包围第一可折叠部A1右侧的第一平坦部B1和弯折边缘C1。
可选地，在本公开实施例提供的上述折叠显示装置中，为利于实现折叠功能，转轴07在显示模组01的出光面上的正投影与第一可折叠部A1的弯曲轴重合。
由于超薄玻璃盖板02和支撑板04的弯折长度均大于二者之间显示模组01的弯折长度，因此，会导致超薄玻璃盖板02的弯折边缘的端面、及支撑板04的弯折边缘的端面均与壳体06接触的情况下，显示模组01的弯折边缘的端面与壳体06之间具有间隙，基于此，在本公开实施例提供的上述折叠显示装置中，还可以在壳体06与显示模组01的弯折边缘的端面之间的间隙处填充粘结层，例如泡棉、防尘胶等绝缘材料，以更好地保护显示模组01。
另外，一般地，在支撑板04与壳体06围成的容置空间内，还可以设置电池、主板等部件，在此不做限定。
另一方面，本公开实施例还提供了一种上述折叠显示面板的制作方法，由于该制作方法解决问题的原理与上述折叠显示面板解决问题的原理相似，因此，本公开实施例提供的该制作方法的实施可以参见本公开实施例提供的上述折叠显示面板的实施，重复之处不再赘述。
具体地，本公开实施例提供的上述折叠显示面板的制作方法，可以包括 以下步骤：
制作一显示模组，显示模组包括：第一可折叠部，以及位于第一可折叠部两侧的第一平坦部；
制作一超薄玻璃盖板，超薄玻璃盖板包括：第二可折叠部，以及位于第二可折叠部两侧的第二平坦部；
将显示模组的出光面所在侧与超薄玻璃盖板进行贴合，使得第二可折叠部在显示模组上的正投影覆盖第一可折叠部，第二平坦部在显示模组上的正投影覆盖第一平坦部。
可选地，在本公开实施例提供的上述制作方法中，制作一超薄玻璃盖板，具体可以通过以下步骤进行实现：
提供厚度为30μm-70μm的平面玻璃；
采用580℃-710℃的温度对平面玻璃加热软化在模具中成型，再经退火制程后，获得边缘弯曲的超薄玻璃盖板，且该超薄玻璃盖板还包括第二可折叠部、以及位于第二可折叠部与弯曲边缘之间的第二平坦部。可选地，在本公开中，加热时间不做限定，只要可实现加热软化的效果即可。示例性的，加热温度较高时，玻璃很快就会软化，因此加热的时间稍短；而在加热温度较低时，玻璃软化所需时间就会较长。
可选地，在本公开实施例提供的上述制作方法中，在将显示模组的出光面所在侧与超薄玻璃盖板进行贴合之后，还可以执行以下步骤：
提供一厚度大于或等于0.1mm的钢片；
对钢片进行蚀刻，使得蚀刻后的钢片的形状与平面玻璃的形状相似或相同；
对蚀刻后的钢片的边缘进行冲压成型，形成边缘弯曲的支撑板，其中，支撑板的边缘的曲率与超薄玻璃盖板的边缘的曲率相似或相同；需要说明的是，为增加支撑板的可弯折性，还可以在冲压成型前在支撑板上打孔，即制作多个在厚度方向上贯穿支撑板的过孔；
将支撑板贴合于显示模组背离超薄玻璃盖板的一侧；其中，支撑板完全 覆盖显示模组。
至此，完成了折叠显示面板的制作。
本公开实施例提供的上述折叠显示面板、其制作方法及折叠显示装置，包括：显示模组，该显示模组包括：第一可折叠部，以及位于第一可折叠部两侧的第一平坦部；超薄玻璃盖板，位于显示模组的出光面所在侧；该超薄玻璃盖板包括：第二可折叠部，以及位于第二可折叠部两侧的第二平坦部；其中，第二可折叠部在显示模组上的正投影覆盖第一可折叠部，第二平坦部在显示模组上的正投影覆盖第一平坦部。在本公开中采用超薄玻璃盖板代替相关技术中的PI盖板或PET盖板来保护显示模组，由于超薄玻璃盖板不但具备玻璃材料的刚性特性，而且兼顾一定的弯折性，因此，使得折叠显示面板具备较好的可弯折性和足够的硬度，从而最大化减轻了折叠导致的褶皱现象。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (22)

  1. 一种折叠显示面板，其中，包括：
    显示模组，所述显示模组包括：第一可折叠部，以及位于所述第一可折叠部两侧的第一平坦部；
    超薄玻璃盖板，位于所述显示模组的出光面所在侧；所述超薄玻璃盖板包括：第二可折叠部，以及位于所述第二可折叠部两侧的第二平坦部；其中，所述第二可折叠部在所述显示模组上的正投影覆盖所述第一可折叠部，所述第二平坦部在所述显示模组上的正投影覆盖所述第一平坦部。
  2. 如权利要求1所述的折叠显示面板，其中，所述显示模组的边缘和所述超薄玻璃盖板的边缘朝向背离所述显示模组的出光面一侧弯折。
  3. 如权利要求2所述的折叠显示面板，其中，所述超薄玻璃盖板的边缘朝向背离所述显示模组的出光面一侧弯折的长度，大于所述显示模组的边缘朝向背离所述显示模组的出光面一侧弯折的长度。
  4. 如权利要求2所述的折叠显示面板，其中，所述超薄玻璃盖板的弯折边缘的弹性模量大于所述第二可折叠部的弹性模量、所述第二平坦部的弹性模量。
  5. 如权利要求4所述的折叠显示面板，其中，所述超薄玻璃盖板的弯折边缘的弹性模量大于或等于70Gpa且小于或等于75Gpa。
  6. 如权利要求2所述的折叠显示面板，其中，所述超薄玻璃盖板的弯折边缘的硬度值大于或等于7H。
  7. 如权利要求2所述的折叠显示面板，其中，在垂直于所述显示模组的出光面的方向上，所述第二可折叠部的厚度、所述第二平坦部的厚度、以及所述超薄玻璃盖板的弯折边缘的厚度相同。
  8. 如权利要求7所述的折叠显示面板，其中，在垂直于所述显示模组的出光面的方向上，所述超薄玻璃盖板的厚度为30μm-70μm。
  9. 如权利要求8所述的折叠显示面板，其中，所述超薄玻璃盖板的强化 深度大于或等于6μm，强化压应力大于或等于450MPa。
  10. 如权利要求2所述的折叠显示面板，其中，所述显示模组的弯折边缘的弧度大于0°且小于或等于90°。
  11. 如权利要求1所述的折叠显示面板，其中，在弯折状态下，所述第一可折叠部和所述第二可折叠部的弧度大于0°且小于或等于180°。
  12. 如权利要求1-11任一项所述的折叠显示面板，其中，还包括：位于所述显示模组背离所述超薄玻璃盖板一侧的支撑板，所述支撑板的形状与所述显示模组的形状相同。
  13. 如权利要求11所述的折叠显示面板，其中，所述支撑板在所述显示模组的出光面上的正投影完全覆盖所述显示模组。
  14. 如权利要求13所述的折叠显示面板，其中，所述支撑板在所述显示模组的出光面上的正投影相对于所述显示模组至少外扩0.2mm且至多外扩0.5mm。
  15. 一种折叠显示装置，其中，包括：壳体，固定于所述壳体上的折叠显示面板，以及与所述壳体铰接的转轴；其中，
    所述折叠显示面板为如权利要求1-14任一项所述的折叠显示面板；
    所述转轴被配置为带动所述壳体与所述折叠显示面板一起弯折或展平。
  16. 如权利要求15所述的折叠显示装置，其中，所述壳体包括：第一壳体和第二壳体，所述第一壳体和所述第二壳体通过所述转轴转动连接。
  17. 如权利要求16所述的折叠显示装置，其中，所述第一可折叠部与所述第一壳体和所述第二壳体之间的区域对应，第一可折叠部两侧的第一平坦部和弯折边缘分别容置于所述第一壳体和所述第二壳体。
  18. 如权利要求15所述的折叠显示装置，其中，所述转轴在所述显示模组的出光面上的正投影与所述第一可折叠部的弯曲轴重合。
  19. 如权利要求15所述的折叠显示装置，其中，还包括：位于所述壳体与所述显示模组的弯折边缘的端面之间的粘结层。
  20. 一种如权利要求1-14任一项所述的折叠显示面板的制作方法，其中， 包括：
    制作一显示模组，所述显示模组包括：第一可折叠部，以及位于所述第一可折叠部两侧的第一平坦部；
    制作一超薄玻璃盖板，所述超薄玻璃盖板包括：第二可折叠部，以及位于所述第二可折叠部两侧的第二平坦部；
    将所述显示模组的出光面所在侧与所述超薄玻璃盖板进行贴合，使得所述第二可折叠部在所述显示模组上的正投影覆盖所述第一可折叠部，所述第二平坦部在所述显示模组上的正投影覆盖所述第一平坦部。
  21. 如权利要求20所述的制作方法，其中，制作一超薄玻璃盖板，具体包括：
    提供厚度为30μm-70μm的平面玻璃；
    采用580℃-710℃的温度对所述平面玻璃加热软化在模具中成型，再经退火制程后，获得边缘弯曲的超薄玻璃盖板，且所述超薄玻璃盖板还包括第二可折叠部、以及位于所述第二可折叠部与弯曲边缘之间的第二平坦部。
  22. 如权利要求21所述的制作方法，其中，在将所述显示模组的出光面所在侧与所述超薄玻璃盖板进行贴合之后，还包括：
    提供一厚度大于或等于0.1mm的钢片；
    对所述钢片进行蚀刻，使得蚀刻后的所述钢片的形状与所述平面玻璃的形状相似；
    对蚀刻后的所述钢片的边缘进行冲压成型，形成边缘弯曲的支撑板，其中，所述支撑板的边缘的曲率与所述超薄玻璃盖板的边缘的曲率相似；
    将所述支撑板贴合于所述显示模组背离所述超薄玻璃盖板的一侧；其中，所述支撑板完全覆盖所述显示模组。
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