WO2020118854A1 - 柔性有机发光显示器及弹簧组件 - Google Patents

柔性有机发光显示器及弹簧组件 Download PDF

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Publication number
WO2020118854A1
WO2020118854A1 PCT/CN2019/072169 CN2019072169W WO2020118854A1 WO 2020118854 A1 WO2020118854 A1 WO 2020118854A1 CN 2019072169 W CN2019072169 W CN 2019072169W WO 2020118854 A1 WO2020118854 A1 WO 2020118854A1
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WO
WIPO (PCT)
Prior art keywords
layer
light emitting
organic light
spring
flexible organic
Prior art date
Application number
PCT/CN2019/072169
Other languages
English (en)
French (fr)
Inventor
贾永臻
Original Assignee
武汉华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/349,621 priority Critical patent/US11404660B2/en
Publication of WO2020118854A1 publication Critical patent/WO2020118854A1/zh

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/06—Other parts or details
    • F03G1/08—Other parts or details for winding
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/02—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/06—Wound springs with turns lying in cylindrical surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/122—Attachments or mountings where coils, e.g. end coils, of the spring are rigidly clamped or similarly fixed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G1/00—Spring motors
    • F03G1/02—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil
    • F03G1/026—Spring motors characterised by shape or material of spring, e.g. helical, spiral, coil using torsion springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
    • F16F1/3665—Wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F16F2224/0208—Alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F16F2224/0241—Fibre-reinforced plastics [FRP]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2226/00—Manufacturing; Treatments
    • F16F2226/04—Assembly or fixing methods; methods to form or fashion parts
    • F16F2226/048—Welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2232/00—Nature of movement
    • F16F2232/02—Rotary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2234/00—Shape
    • F16F2234/02—Shape cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
    • F16F2236/08—Torsion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/026—Springs wound- or coil-like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
    • F16F3/04—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/08—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
    • F16F3/087—Units comprising several springs made of plastics or the like material
    • F16F3/0873—Units comprising several springs made of plastics or the like material of the same material or the material not being specified
    • F16F3/0876—Units comprising several springs made of plastics or the like material of the same material or the material not being specified and of the same shape
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED

Definitions

  • the present application relates to the field of display technology, in particular to a flexible organic light-emitting display and a spring assembly.
  • Foldable mobile phone is a research and development hotspot of flexible electronic products in the future, among which, foldable organic light-emitting display (Organic Light Emitting Display (OLED) screen is the most critical element in foldable mobile phones.
  • OLED Organic Light Emitting Display
  • the purpose of the present application is to provide a flexible organic light-emitting display.
  • the flexible organic light-emitting display screen has a small force between the film layers when bending and does not exhibit unrecoverable deformation, and can be flatly unfolded without creases when unfolded .
  • Yet another object of the present application is to provide a spring assembly that stores or releases torsional elastic potential energy by the rotation of the cylinder.
  • a flexible organic light-emitting display includes a display panel, and the display panel includes:
  • At least two film layers, one end of one film layer and one end of the other adjacent film layer are fixed;
  • At least two spring components at least two of the spring components respectively correspond to at least two layers of the membrane layer
  • the spring assembly includes a cylinder, a first fixing part, a spring and a second fixing part,
  • the cylinder has a hollow cylinder body and a first cylinder cover and a second cylinder cover located at both ends of the hollow cylinder body, a through hole is provided in the center of the first cylinder cover, and the center of the second cylinder cover There is a circular groove;
  • the spring is placed inside the hollow cylinder, the spring has a first end and a second end, the first end passes through the through hole to be fixed on the first fixing part, The second end is located in the hollow cylinder and fixed on the second cylinder cover;
  • the second fixing part has a round end matched with the round groove, the round end is inserted into the round groove, and the other end of the second fixing part is fixed;
  • the first end is welded to the first fixing part, or the first end is a ring, and the first fixing part is provided with a hook-shaped part, The hook portion passes through the ring to fix the first end.
  • the second end is welded to the second cylinder cover, or the second end is a ring, and the second cylinder cover is provided with a hook-shaped portion, The hook portion passes through the ring to fix the second end.
  • the flexible organic light emitting display further includes an outer frame, the outer frame is disposed around the display panel, the first fixing portion is fixed on the outer frame, and the second fixing portion The other end of is fixed on the outer frame.
  • the display panel includes a supporting backplane layer, a light emitting device layer, a polarizing plate layer, a touch panel layer, and a cover layer that are sequentially arranged, and the supporting backplane layer and the A light-emitting device layer, the polarizing plate layer, the touch panel layer and the cover plate layer correspond to one-to-one spring components, one end of the supporting back plate layer, one end of the light-emitting device layer, the polarizing plate One end of the layer, one end of the touch panel layer and one end of the cover plate layer are fixed, the other end of the support backplane layer, the other end of the light emitting device layer, the other end of the polarizer layer , The other end of the touch panel layer and the other end of the cover plate layer are respectively connected to the cylinder corresponding to the spring assembly.
  • the flexible organic light-emitting display further includes an outer frame provided around the display panel, one end of the supporting backplane layer, one end of the light-emitting device layer, and one end of the polarizing plate layer 1.
  • One end of the touch panel layer and one end of the cover layer can be detachably fixedly connected to the outer frame.
  • the allowable deformation coefficient of the spring of the spring assembly corresponding to the supporting back plate layer, the light emitting device layer, the polarizing plate layer, the touch panel layer and the cover plate layer provided in this order is along the cover
  • the direction of the slab layer pointing to the supporting back slab layer decreases sequentially.
  • the second fixing portion is an L-shaped fixing member, and the L-shaped fixing member has a rounded end portion that cooperates with the circular groove. The other end is fixed.
  • the force exerted by the spring assembly on the film layer per centimeter is greater than 0N and less than 0.098N.
  • the spring is made of stainless steel or carbon fiber composite material.
  • the material for preparing the lubricating layer is lubricating oil.
  • the lubricating oil is at least one of polyalphaolefin synthetic oil, polyether synthetic oil, or alkylbenzene oil; or, the lubricating oil is mineral oil.
  • a spring assembly the spring assembly includes a cylinder, a first fixing portion, a spring and a second fixing portion,
  • the cylinder has a hollow cylinder body and a first cylinder cover and a second cylinder cover located at both ends of the hollow cylinder body, a through hole is provided in the center of the first cylinder cover, and the center of the second cylinder cover There is a circular groove;
  • the spring is placed inside the hollow cylinder, the spring has a first end and a second end, the first end passes through the through hole to be fixed on the first fixing part, The second end is located in the hollow cylinder and fixed on the second cylinder cover;
  • the second fixing portion has a rounded end that cooperates with the circular groove, the rounded end is inserted into the circular groove, and the other end of the second fixing portion is fixed.
  • the first end is welded to the first fixing part, or the first end is a ring, and the first fixing part is provided with a hook-shaped part, the The hook portion passes through the ring to fix the first end.
  • the second end is welded to the second cylinder cover, or the second end is a ring, and the second cylinder cover is provided with a hook-shaped portion, the A hook portion passes through the ring to fix the second end.
  • the second fixing portion is an L-shaped fixing member
  • the L-shaped fixing member has a rounded end portion cooperating with the circular groove, and the other end of the L-shaped fixing member fixed.
  • the spring is made of stainless steel or carbon fiber composite material.
  • the present application provides a flexible organic light-emitting display and a spring assembly, the membrane layer is pulled one by one by the spring assembly to make the membrane layer flat when unfolded, and there is no unrecoverable deformation when bent, and it is provided with lubrication between adjacent membrane layers
  • the layer reduces the force between adjacent film layers, so that the flexible organic light-emitting display is flat and free of creases when unfolded.
  • FIG. 1 is a perspective view of a flexible organic display according to a first embodiment of the present application in an expanded state
  • FIG. 2 is a plan view of the flexible organic light-emitting display according to the first embodiment of the present application in an expanded state
  • FIG. 3 is a front view of the flexible organic light-emitting display of the first embodiment of the present application in an expanded state
  • FIG. 4 is a cross-sectional view of the flexible organic light-emitting display shown in FIG. 3 along the A-A tangent direction;
  • FIG. 5 is a plan view of a flexible organic light-emitting display according to a second embodiment of the present application in an unfolded state.
  • FIG. 1, FIG. 2 and FIG. 3, are schematic diagrams of a flexible organic light emitting display according to a first embodiment of the present application.
  • the flexible organic light emitting display includes a display panel, and the display panel includes:
  • At least two film layers 11, one end of one film layer 11 and one end of the other adjacent film layer 11 are fixed;
  • a lubricating layer (not shown) between two adjacent film layers 11;
  • At least two spring components at least two spring components respectively corresponding to at least two film layers 11 one by one, the spring component includes a cylinder 121, a first fixing portion 122, a spring 123 and a second fixing portion 124,
  • the cylinder 121 has a hollow cylinder and first and second cylinder covers located at both ends of the hollow cylinder.
  • the center of the first cylinder cover is provided with a through hole, and the center of the second cylinder cover is provided with a circular groove;
  • the spring 123 is placed inside the hollow cylinder, the spring 123 has a first end and a second end, the first end passes through the through hole to be fixed on the first fixing portion 122, and the second end is located in the hollow cylinder And fixed on the second cylinder cover;
  • the second fixing portion 124 has a rounded end portion matched with the circular groove, the rounded end portion is inserted into the circular groove, and the other end of the second fixing portion 124 is fixed;
  • the other end of the one membrane layer 11 and the other end of the adjacent another membrane layer 11 are respectively fixed on the cylinder 121 corresponding to the spring assembly.
  • the display panel includes different film layers 11, such as a light emitting device layer, a supporting backplane layer, and a protective cover layer.
  • the substrates of the different film layers 11 are flexible and foldable materials.
  • the base material of the light emitting device layer may be polyimide Amine (Polyimide, PI), polyethylene terephthalate (Polyethylene terephthalate, PET), polycarbonate (Polycarbonate, PC) and polymethyl methacrylate (Polymethylmethacrylate, PMMA), etc.
  • the substrate of each film layer 11 is a flexible foldable material so that the flexible organic light emitting device has foldability.
  • each adjacent film layer 11 constituting the display panel is fixed to prevent the flexible organic light-emitting display from switching between the bent state and the unfolded state, a large degree of sliding between the adjacent film layers 11 causes the flexible organic light-emitting display
  • the light-emitting display cannot work normally; the other ends of the adjacent film layers 11 are respectively fixed on the corresponding cylinders 121 so that the cylinder 121 can control the winding and supplying of each film layer 11 during unfolding and bending, that is, in the film
  • the film layer 11 is supplied to elongate the film layer 11, and the film layer 11 is rolled up to shorten the film layer 11 when the film layer 11 is unfolded.
  • the portion of each film layer 11 wrapped around the cylinder 121 is a non-display panel. Display area.
  • FIG. 4 it is a cross-sectional view of the flexible organic light-emitting display shown in FIG. 3 along the tangent direction of AA.
  • a second fixing portion 124 is inserted on the cylinder 121 so that the cylinder 121 can be around its central axis
  • the spring 123 provided inside the cylinder 121 has one end fixed to the second cylinder cover and the other end fixed to the first fixing portion 122. A force is applied to the cylinder 121 to rotate around the central axis.
  • the end of the spring 123 fixedly connected to the cylinder 121 drives the spring 123 to rotate, thereby accumulating elastic potential energy of the spring 123; after the force applied to the cylinder 121 is removed, the spring 123 is released
  • the accumulated elastic potential energy drives the cylinder 121 to rotate.
  • the film layer 11 on the cylinder 121 is stretched by the pulling force to avoid unrecoverable deformation at the bending point of the film layer 11 causing a crease in the film layer 11 when unfolding.
  • the cylinder 121 Rotation under tension causes the spring 123 to accumulate elastic potential energy.
  • the spring 123 releases the accumulated elastic potential energy to rotate the cylinder 121 to wind up the film layer unfolded during bending to flatten the flexible organic light emitting display Unfold.
  • a lubricating layer is provided between the adjacent film layers 11 constituting the display panel to play a lubricating role.
  • the lubricating layer can reduce the The frictional force thus reduces the interaction force between adjacent film layers 11, thereby avoiding the generation of creases in each film layer.
  • the flexible organic light-emitting display described above pulls the film layers one by one through the spring assembly to make the film layer flat when unfolded and does not appear unrecoverable deformation when bent, and the lubricating layer is arranged between adjacent film layers so that the adjacent film layers The applied force is reduced, so that the flexible organic light-emitting display is flat and free of creases when unfolded.
  • the spring 123 is a coil spring.
  • the spring 123 may be a single spring, or may be multiple springs connected in series, multiple springs connected in parallel, or multiple springs connected alternately in series and parallel; single Parameters such as the radius, number of turns and height of the spring can be selected according to actual needs, and this application does not make specific limitations. It should be understood that in this application, the spring 123 stores and releases the elastic potential energy by torsion, so it is necessary to select an appropriate material to prepare the spring 123 so that the spring 123 can be stably twisted many times.
  • the preparation material of the spring 123 is Stainless steel or carbon fiber composite material.
  • the first end is welded to the first fixing portion 122, or the first end is a ring, and the first fixing portion 122 is provided with a hook-shaped portion that passes through the ring to fix the first end, Or, the first end is a hook-shaped portion, and the first fixing portion 122 is provided with a through-hole matching the hook-shaped portion, the hook-shaped portion passes through the through-hole to fix the first end, or, the first end is provided There are external threads.
  • the first fixing portion 122 is provided with a threaded hole matching the external thread of the first end. The first end is screwed into the threaded hole. The first end can also be fixed to the first fixing by other methods.
  • the first end is connected to the first fixing portion 122 through a spring fixing portion 1221 provided on the first fixing portion 122.
  • the spring fixing portion 1221 may be a spring.
  • the spring fixing portion 1221 and the spring 123 may be integrally formed, or may be connected by welding.
  • the second end is welded to the second cylinder cover, or the second end is a ring, and the second cylinder cover is provided with a hook-shaped portion that passes through the circle to fix the second end, or,
  • the second end is a hook-shaped part, and the second cylinder cover is provided with a through-hole matching with the hook-shaped part, the hook-shaped part passes through the through-hole to fix the second end, or the second end is provided with an external thread
  • the second cylinder cover is provided with a screw hole matched with the external thread of the second end, and the second end can also be fixed on the second cylinder cover by other methods.
  • the rotation of the cylinder 121 can drive the spring 123 to twist to store elastic potential energy, and when the spring 123 twists to release the elastic potential energy, the cylinder 121 can rotate.
  • the second end is fixed at the center of the second cylinder cover, which is conducive to each part of the spring 123 to store and release elastic potential energy more uniformly.
  • the first fixing portion 122 is used to fix the spring 123, and is made of a hard material.
  • the first fixing portion 122 has a plate shape, and its shape may be a cylinder or a rectangular parallelepiped.
  • the springs 123 corresponding to different membrane layers 11 may be fixed on the same first fixing portion 122, or may be fixed on different first fixing portions 122. In this embodiment, the springs 123 corresponding to different membrane layers 11 are fixed on different first fixing portions 122.
  • the second fixing portion 124 is used to support and fix the cylinder 121, and there is a corresponding second fixing portion 124 for each cylinder 121.
  • the second fixing part is an L-shaped fixing part.
  • the L-shaped fixing part has a rounded end part matched with the circular groove, and the other end of the L-shaped fixing part is fixed. The rounded end enables the cylinder 121 to rotate about its central axis.
  • the flexible organic light emitting display further includes an outer frame (not shown), the outer frame is disposed around the display panel, the first fixing portion 122 is fixed on the outer frame, and the other end of the second fixing portion 124 is fixed on the outer frame.
  • the outer frame is the middle frame of the flexible organic light-emitting display, which constitutes the skeleton of the flexible organic light-emitting display, and its preparation material is a hard material, which plays the role of support and protection.
  • the display panel has four sides, the outer frames are respectively arranged around the display panel, and the first fixing portion 122 and the second fixing portion 124 are respectively fixed to the two opposite outer frames. As shown in FIGS.
  • the first fixing portions 122 corresponding to the respective film layers 11 are connected to the outer frame through the same first fixing plate 13; the second fixing portions 124 corresponding to the respective film layers 11 are respectively fixed by independent second The board 14 is connected to the outer frame.
  • the first fixing portion 122 may also be fixed on the outer frame by bonding or welding, and the second fixing portion 124 may also be fixed on the outer frame by bonding or welding.
  • one end of one film layer and one end of another adjacent film layer are fixed on the outer frame.
  • the preparation material of the lubricating layer is lubricating oil.
  • the lubricating oil is an optical-grade lubricating oil, and is evenly disposed between two adjacent film layers 11 by coating or spraying to play a lubricating role.
  • the thickness of the lubricating oil is relatively thin, which is negligible compared with the thickness of the film layer 11.
  • the lubricating oil is at least one of polyalphaolefin synthetic oil, polyether synthetic oil or alkylbenzene oil; or, the lubricating oil is mineral oil.
  • the tensile force per unit length (cm) of each film layer is greater than 0N and less than 0.098N, that is, when the spring releases or stores the elastic potential energy, the tensile force per unit length (cm) of each film layer It is greater than 0N and less than 0.098N.
  • the tensile force per unit length (cm) of each film layer is greater than 0.04N and less than 0.08N.
  • FIG. 5 is a plan view of a flexible organic light-emitting display according to a second embodiment of the present application in an unfolded state.
  • the flexible organic light emitting display includes a supporting backplane layer 21, a light emitting device layer 22, a polarizing plate layer 23, a touch panel layer 24, and a cover layer 25, which are arranged in sequence, and the supporting backplane layer 21, the light emitting device layer 22,
  • the polarizer layer 23, the touch panel layer 24 and the cover layer 25 correspond to the spring assembly 20 in one-to-one relationship, supporting one end of the back plate layer 21, one end of the light emitting device layer 22, one end of the polarizer layer 23, and the touch panel layer 24
  • one end of the cover layer 25 are fixed to support the other end of the back layer 21, the other end of the light emitting device layer 22, the other end of the polarizer layer 23, the other end of the touch panel layer 24 and the cover layer 25
  • the other ends of are respectively connected to the cylinder of the corresponding spring assembly 20, and a lubricating layer
  • the other end of the support backplane layer 21, the other end of the light emitting device layer 22, the other end of the polarizing plate layer 23, the other end of the touch panel layer 24, and the other end of the cover layer 25 respectively correspond to The cylinder connection of the spring assembly 20, the other end of the supporting back plate layer 21, the other end of the light emitting device layer 22, the other end of the polarizing plate layer 23, the other end of the touch panel layer 24 and the cover plate layer
  • the other end of 25 is the non-display area of the flexible organic light-emitting display.
  • the support back layer 21, the light emitting device layer 22, the polarizing plate layer 23, the touch panel layer 24, and the cover layer 25 are bent Because the composition and thickness of each film layer are different, and the bending degree of each film layer is different, it is necessary to comprehensively consider the composition of each film layer and the bending state of each film layer, and select the appropriate spring respectively to coordinate Control the unfolding and winding of each film layer in the bent state and the unfolded state.
  • the bending direction of the flexible organic light emitting display is from the cover layer 25 to the supporting backing layer 21, then the supporting backing layer 21, the light emitting device layer 22, the polarizing plate layer 23,
  • the allowable deformation coefficient of the spring of the spring assembly 20 corresponding to the touch panel layer 24 and the cover layer 25 decreases in sequence along the direction in which the cover layer 25 points toward the support back layer 21, that is, the spring corresponding to the support back layer 21
  • the allowable deformation coefficient of is the smallest, and the allowable deformation coefficient of the spring corresponding to the cover layer 25 is the largest.
  • the flexible organic light emitting display further includes an outer frame disposed around the display panel, one end supporting the back plate layer 21, one end of the light emitting device layer 22, one end of the polarizing plate layer 23, one end of the touch panel layer 24 and the cover layer
  • One end of 25 can be detachably fixedly connected to the outer frame.
  • Removably fixed connection methods include but are not limited to bolt connection.

Abstract

一种柔性有机发光显示器及弹簧组件（20），通过弹簧组件（20）一对一地牵引膜层（11）以使膜层（11）展开时平整而弯折时不出现不可恢复的形变，配合相邻膜层（11）之间设置润滑层使得相邻膜层（11）之间的作用力减小，从而使得柔性有机发光显示器展开时平整且无折痕。

Description

柔性有机发光显示器及弹簧组件 技术领域
本申请涉及显示技术领域，尤其涉及一种柔性有机发光显示器及弹簧组件。
 背景技术
可折叠手机是未来柔性电子类产品的一个研发热点，其中，可折叠的有机发光显示器(Organic Light Emitting Display, OLED)屏幕是可折叠手机中最为关键的元件。
目前，柔性OLED屏幕在弯折过程中会出现各个膜层间变形不能协调，膜层间的相互作用增加膜材在弯折变形过程中所受到的应力水平，复杂的超弹性、粘弹性和塑性行为共同导致了屏幕弯折后，再展开无法保持平整，由此造成的波浪状显示条纹是柔性屏幕开发过程中所必须克服的重大问题。
 技术问题
本申请的目的在于提供一种柔性有机发光显示器，该柔性有机发光显示器的屏幕在弯折时膜层之间作用力小且不会出现不可恢复的形变，在展开时能够平整展开且无折痕。
本申请的又一目的是提供一种弹簧组件，该弹簧组件通过圆筒的转动使弹簧存储或释放扭转的弹性势能。
 技术解决方案
一种柔性有机发光显示器，所述柔性有机发光显示器包括显示面板，所述显示面板包括：
至少两层膜层，一所述膜层的一端与相邻的另一所述膜层的一端均固定；
位于相邻两层所述膜层之间的润滑层；以及
至少两弹簧组件，至少两所述弹簧组件分别与至少两层所述膜层一一对应，
所述弹簧组件包括圆筒、第一固定部、弹簧及第二固定部，
所述圆筒具有一空心筒体及位于所述空心筒体两端的第一筒盖和第二筒盖，所述第一筒盖的中心上设置有一通孔，所述第二筒盖的中心设置有一圆形凹槽；
所述弹簧置于所述空心筒体的内部，所述弹簧具有第一端部和第二端部，所述第一端部穿过所述通孔以固定在所述第一固定部上，所述第二端部位于所述空心筒体中且固定在所述第二筒盖上；
所述第二固定部具有与所述圆形凹槽相配合的一圆形端部，所述圆形端部插入所述圆形凹槽中，所述第二固定部的另一端固定；
其中，一所述膜层的另一端和相邻的另一所述膜层的另一端分别固定在对应所述弹簧组件的所述圆筒上。
在上述柔性有机发光显示器中，所述第一端部是焊接在所述第一固定部上，或，所述第一端部为圆环，所述第一固定部上设置有钩形部，所述钩形部穿过所述圆环以固定所述第一端部。
在上述柔性有机发光显示器中，所述第二端部是焊接在所述第二筒盖上，或，所述第二端部为圆环，所述第二筒盖上设置有钩形部，所述钩形部穿过所述圆环以固定所述第二端部。
在上述柔性有机发光显示器中，所述柔性有机发光显示器还包括外边框，所述外边框环绕所述显示面板设置，所述第一固定部固定在所述外边框上，所述第二固定部的另一端固定在所述外边框上。
在上述柔性有机发光显示器中，所述显示面板包括依次设置的支撑背板层、发光器件层、偏光板层、触控面板层及盖板层，以及分别与所述支撑背板层、所述发光器件层、所述偏光板层、所述触控面板层及所述盖板层一一对应的弹簧组件，所述支撑背板层的一端、所述发光器件层的一端、所述偏光板层的一端、所述触控面板层的一端及所述盖板层的一端均固定，所述支撑背板层的另一端、所述发光器件层的另一端、所述偏光板层的另一端、所述触控面板层的另一端及所述盖板层的另一端分别与相对应所述弹簧组件的所述圆筒连接。
在上述柔性有机发光显示器中，所述柔性有机发光显示器还包括环绕所述显示面板设置的外边框，所述支撑背板层的一端、所述发光器件层的一端、所述偏光板层的一端、所述触控面板层的一端及所述盖板层的一端均可拆卸地固定连接在所述外边框上。
在上述柔性有机发光显示器中，所述依次设置的支撑背板层、发光器件层、偏光板层、触控面板层及盖板层对应的弹簧组件的弹簧的许用变形系数沿着所述盖板层指向所述支撑背板层的方向依次减小。
在上述柔性有机发光显示器中，所述第二固定部为L型固定件，所述L型固定件具有与所述圆形凹槽相配合的一圆形端部，所述L型固定件的另一端固定。
在上述柔性有机发光显示器中，所述弹簧组件对每厘米所述膜层所施加的力大于0N且小于0.098N。
在上述柔性有机发光显示器中，所述弹簧的制备材料为不锈钢或碳纤维复合材料。
在上述柔性有机发光显示器中，所述润滑层的制备材料为润滑油。
在上述柔性有机发光显示器中，所述润滑油为聚α-烯烃合成油、聚醚合成油或烷基苯油中的至少一种；或，所述润滑油为矿物油。
一种弹簧组件，所述弹簧组件包括圆筒、第一固定部、弹簧及第二固定部，
所述圆筒具有一空心筒体及位于所述空心筒体两端的第一筒盖和第二筒盖，所述第一筒盖的中心上设置有一通孔，所述第二筒盖的中心设置有一圆形凹槽；
所述弹簧置于所述空心筒体的内部，所述弹簧具有第一端部和第二端部，所述第一端部穿过所述通孔以固定在所述第一固定部上，所述第二端部位于所述空心筒体中且固定在所述第二筒盖上；
所述第二固定部具有与所述圆形凹槽相配合的一圆形端部，所述圆形端部插入所述圆形凹槽中，所述第二固定部的另一端固定。
在上述弹簧组件中，所述第一端部是焊接在所述第一固定部上，或，所述第一端部为圆环，所述第一固定部上设置有钩形部，所述钩形部穿过所述圆环以固定所述第一端部。
在上述弹簧组件中，所述第二端部是焊接在所述第二筒盖上，或，所述第二端部为圆环，所述第二筒盖上设置有钩形部，所述钩形部穿过所述圆环以固定所述第二端部。
在上述弹簧组件中，所述第二固定部为L型固定件，所述L型固定件具有与所述圆形凹槽相配合的一圆形端部，所述L型固定件的另一端固定。
在上述弹簧组件中，所述弹簧的制备材料为不锈钢或碳纤维复合材料。
 有益效果
本申请提供一种柔性有机发光显示器及弹簧组件，通过弹簧组件一对一地牵引膜层以使膜层展开时平整而弯折时不出现不可恢复的形变，配合相邻膜层之间设置润滑层使得相邻膜层之间的作用力减小，从而使得柔性有机发光显示器展开时平整且无折痕。
 附图说明
图1为本申请第一实施例柔性有机显示器展开状态时的立体图；
图2为本申请第一实施例柔性有机发光显示器展开状态时的俯视图；
图3为本申请第一实施例柔性有机发光显示器展开状态时的主视图；
图4为图3所示柔性有机发光显示器沿A-A切线方向的剖面图；
图5为本申请第二实施例柔性有机发光显示器展开状态时的俯视图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1、图2以及图3，其为本申请第一实施例柔性有机发光显示器的示意图，该柔性有机发光显示器包括显示面板，显示面板包括：
至少两层膜层11，一膜层11的一端与相邻的另一膜层11的一端均固定；
位于相邻两层膜层11之间的润滑层（未示出）；
至少两弹簧组件，至少两弹簧组件分别与至少两层膜层11一一对应，弹簧组件包括圆筒121、第一固定部122、弹簧123及第二固定部124，
圆筒121具有一空心筒体及位于空心筒体两端的第一筒盖和第二筒盖，第一筒盖的中心上设置有一通孔，第二筒盖的中心设置有一圆形凹槽；
弹簧123置于空心筒体的内部，弹簧123具有第一端部和第二端部，第一端部穿过通孔以固定在第一固定部122上，第二端部位于空心筒体中且固定在第二筒盖上；
第二固定部124具有与圆形凹槽相配合的一圆形端部，圆形端部插入圆形凹槽中，第二固定部124的另一端固定；
其中，一膜层11的另一端和相邻的另一膜层11的另一端分别固定在对应弹簧组件的圆筒121上。
显示面板包括不同膜层11，例如发光器件层、支撑背板层及保护盖板层等，不同膜层11的基材均为柔性可折叠材料，例如发光器件层的基材可以为聚酰亚胺（Polyimide, PI）、聚对苯二甲酸乙二醇酯（Polyethylene terephthalate, PET）、聚碳酸酯（Polycarbonate, PC）及聚甲基丙烯酸甲酯（Polymethylmethacrylate, PMMA）等，各膜层11的基材为柔性可折叠材料使得柔性有机发光器件具有可折叠性。
组成显示面板的各相邻膜层11的一端均固定，以防止柔性有机发光显示器在弯折状态和展开状态之间切换时，各相邻膜层11之间发生较大程度的滑动导致柔性有机发光显示器不能正常工作；各相邻膜层11的另一端分别固定在对应的圆筒121上使得圆筒121可以控制各膜层11在展开时和弯折时的收卷及供给，即在膜层11弯折时供给膜层11以拉长膜层11，在膜层11展开时收卷膜层以缩短膜层11，各膜层11缠绕在圆筒121上的部分均为显示面板的非显示区域。
如图4所示，其为图3所示柔性有机发光显示器沿A-A切线方向的剖面图，在弹簧组件中，圆筒121上插接有第二固定部124使得圆筒121可以绕其中心轴线转动，圆筒121内部设置的弹簧123一端固定在第二筒盖上而另一端固定在第一固定部122上。对圆筒121施加力以使其绕中心轴线旋转，弹簧123与圆筒121固定连接的一端带动弹簧123转动，从而使弹簧123积蓄弹性势能；对圆筒121施加的力撤去后，弹簧123释放积蓄的弹性势能带动圆筒121转动。柔性有机发光显示器在弯折时，圆筒121上的膜层11受拉力作用而展开以避免膜层11弯折处出现不可恢复的形变导致膜层11展开时出现折痕，同时，圆筒121受拉力作用而转动使弹簧123积累弹性势能，柔性有机发光显示器在展开时，弹簧123释放积蓄的弹性势能使圆筒121转动以收卷在弯曲时展开的膜层从而使柔性有机发光显示器平整地展开。
组成显示面板的各相邻膜层11之间设置有润滑层以起到润滑作用，柔性有机发光显示器在弯折状态和展开状态之间进行变换时，润滑层能够减少相邻膜层之间的摩擦力从而减小相邻膜层11之间的相互作用力，从而避免各膜层生成折痕。
上述柔性有机发光显示器通过弹簧组件一对一地牵引膜层以使膜层展开时平整而弯折时不出现不可恢复的形变，配合相邻膜层之间设置润滑层使得相邻膜层之间的作用力减小，从而使得柔性有机发光显示器展开时平整且无折痕。
在本实施例中，弹簧123为螺旋弹簧，弹簧123可以是单根弹簧，也可以是串接的多根弹簧、并接的多根弹簧或者串接和并接交替的多根弹簧；单根弹簧的半径、匝数以及高度等参数可以根据实际需要进行选择，本申请不做具体的限定。需要了解的是，在本申请中，弹簧123是通过扭转存储并释放弹性势能，故需要选择合适的材料制备弹簧123以使得弹簧123能多次稳定地扭转，具体地，弹簧123的制备材料为不锈钢或碳纤维复合材料。
第一端部是焊接在第一固定部122上，或，第一端部为圆环，第一固定部122上设置有钩形部，钩形部穿过圆环以固定第一端部，或，第一端部为钩形部，第一固定部122上设置有与钩形部配合的通孔，钩形部穿过通孔以固定第一端部，或，第一端部上设置有外螺纹，第一固定部122上设置有与第一端部的外螺纹相配合的螺纹孔，第一端部旋入螺纹孔中，第一端部也可以通过其他方法固定在第一固定部122上，只要保证弹簧123在扭转时第一端部固定不动即可。在本实施例中，如图3及图4所示，第一端部是通过设置在第一固定部122上的弹簧固定部1221与第一固定部122连接，弹簧固定部1221可以为弹簧，弹簧固定部1221与弹簧123可以一体成型，也可以通过焊接连接。
第二端部是焊接在第二筒盖上，或，第二端部为圆环，第二筒盖上设置有钩形部，钩形部穿过圆环以固定第二端部，或，第二端部为钩形部，第二筒盖上设置有与钩形部配合的通孔，钩形部穿过通孔以固定第二端部，或，第二端部上设置有外螺纹，第二筒盖上设置有与第二端部的外螺纹相配合的螺纹孔，第二端部也可以通过其他方法固定在第二筒盖上。第二端部固定在第二筒盖上时，圆筒121转动能带动弹簧123扭转以存储弹性势能，弹簧123扭转以释放弹性势能时能带动圆筒121转动。第二端部固定在第二筒盖的中心位置，有利于弹簧123的各个部分更加均匀地存储及释放弹性势能。
第一固定部122用于固定弹簧123，其由硬质材料制成，第一固定部为板状，其形状可以为圆柱体或长方体等。不同膜层11对应的弹簧123可以固定在同一第一固定部122，也可以固定在不同的第一固定部122上。在本实施例中，不同膜层11对应的弹簧123固定在不同的第一固定部122上。
第二固定部124用于支撑及固定圆筒121，对于每个圆筒121都有对应的第二固定部124。第二固定部为L型固定件，L型固定件具有与圆形凹槽相配合的一圆形端部，L型固定件的另一端固定。圆形端部使得圆筒121能绕其中心轴线转动。
进一步地，柔性有机发光显示器还包括外边框（未示出），外边框环绕显示面板设置，第一固定部122固定在外边框上，第二固定部124的另一端固定在外边框上。外边框是柔性有机发光显示器的中框，其构成柔性有机发光显示器的骨架，其制备材料为硬质材料，起到支撑和保护的作用。显示面板有四个侧面时，外边框分别环绕地设置在显示面板的四周，第一固定部122和第二固定部124分别固定在相对的两外边框上。如图1及图3所示，各个膜层11对应的第一固定部122通过同一第一固定板13与外边框连接；各个膜层11对应的第二固定部124分别通过独立的第二固定板14与外边框连接。在其他实施例中，第一固定部122也可以通过粘接或焊接的方式固定在外边框上，第二固定部124也可以通过粘接或焊接的方式固定在外边框上。
在本实施例中，一膜层的一端和相邻的另一膜层的一端均固定在外边框上。
在本实施例中，润滑层的制备材料为润滑油。该润滑油为光学级润滑油，通过涂布或喷涂的方式均匀地设置于相邻两膜层11之间以起到润滑作用。润滑油的厚度较薄，与膜层11的厚度相比，可以忽略不计。润滑油为聚α-烯烃合成油、聚醚合成油或烷基苯油中的至少一种；或，润滑油为矿物油。
本申请还通过探索得出各膜层单位长度（厘米）所受的拉力要大于0N且小于0.098N，即弹簧在释放或存储弹性势能时，各膜层单位长度（厘米）所受的拉力要大于0N且小于0.098N，可选地，各膜层单位长度（厘米）所受的拉力要大于0.04N且小于0.08N。
图5为本申请第二实施例柔性有机发光显示器展开状态时的俯视图。该柔性有机发光显示器包括依次设置的支撑背板层21、发光器件层22、偏光板层23、触控面板层24及盖板层25，以及分别与支撑背板层21、发光器件层22、偏光板层23、触控面板层24及盖板层25一一对应的弹簧组件20，支撑背板层21的一端、发光器件层22的一端、偏光板层23的一端、触控面板层24的一端及盖板层25的一端均固定，支撑背板层21的另一端、发光器件层22的另一端、偏光板层23的另一端、触控面板层24的另一端及盖板层25的另一端分别与相对应弹簧组件20的圆筒连接，相邻膜层之间设置有润滑层（未示出）。
需要说明的是，支撑背板层21的另一端、发光器件层22的另一端、偏光板层23的另一端、触控面板层24的另一端及盖板层25的另一端分别与相对应弹簧组件20的圆筒连接，该支撑背板层21的另一端、该发光器件层22的另一端、该偏光板层23的另一端、该触控面板层24的另一端及该盖板层25的另一端均为柔性有机发光显示器的非显示区域。
由于柔性有机发光显示器在弯曲状态和展开状态之间切换的过程中，支撑背板层21、发光器件层22、偏光板层23、触控面板层24及盖板层25在弯折的情况下，由于各膜层的组成及厚度各异，各膜层的弯折程度不同，需要综合考虑各膜层的组成及各膜层弯折的弯折状况，分别对应地选择合适的弹簧以协调地控制各膜层在弯曲状态时和展开状态时的展开和收卷。
对于外弯折柔性有机发光显示器，柔性有机发光显示器弯折的方向是由盖板层25指向支撑背板层21，则依次设置的支撑背板层21、发光器件层22、偏光板层23、触控面板层24及盖板层25对应的弹簧组件20的弹簧的许用变形系数沿着盖板层25指向支撑背板层21的方向依次减小，即支撑背板层21所对应的弹簧的许用变形系数最小，而盖板层25所对应的弹簧的许用变形系数最大。
进一步地，柔性有机发光显示器还包括环绕显示面板设置的外边框，支撑背板层21的一端、发光器件层22的一端、偏光板层23的一端、触控面板层24的一端及盖板层25的一端均可拆卸地固定连接在外边框上。可拆卸地固定连接方式包括但不限于螺栓连接。
以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (17)

  1. 一种柔性有机发光显示器，其中，所述柔性有机发光显示器包括显示面板，所述显示面板包括：
    至少两层膜层，一所述膜层的一端与相邻的另一所述膜层的一端均固定；
    位于相邻两层所述膜层之间的润滑层；以及
    至少两弹簧组件，至少两所述弹簧组件分别与至少两层所述膜层一一对应，所述弹簧组件包括圆筒、第一固定部、弹簧及第二固定部，
    所述圆筒具有一空心筒体及位于所述空心筒体两端的第一筒盖和第二筒盖，所述第一筒盖的中心上设置有一通孔，所述第二筒盖的中心设置有一圆形凹槽；
    所述弹簧置于所述空心筒体的内部，所述弹簧具有第一端部和第二端部，所述第一端部穿过所述通孔以固定在所述第一固定部上，所述第二端部位于所述空心筒体中且固定在所述第二筒盖上；
    所述第二固定部具有与所述圆形凹槽相配合的一圆形端部，所述圆形端部插入所述圆形凹槽中，所述第二固定部的另一端固定；
    一所述膜层的另一端和相邻的另一所述膜层的另一端分别固定在对应所述弹簧组件的所述圆筒上。
  2. 根据权利要求1所述的柔性有机发光显示器，其中，所述第一端部是焊接在所述第一固定部上，或，所述第一端部为圆环，所述第一固定部上设置有钩形部，所述钩形部穿过所述圆环以固定所述第一端部。
  3. 根据权利要求1所述的柔性有机发光显示器，其中，所述第二端部是焊接在所述第二筒盖上，或，所述第二端部为圆环，所述第二筒盖上设置有钩形部，所述钩形部穿过所述圆环以固定所述第二端部。
  4. 根据权利要求1所述的柔性有机发光显示器，其中，所述柔性有机发光显示器还包括外边框，所述外边框环绕所述显示面板设置，所述第一固定部固定在所述外边框上，所述第二固定部的另一端固定在所述外边框上。
  5. 根据权利要求1所述的柔性有机发光显示器，其中，所述显示面板包括依次设置的支撑背板层、发光器件层、偏光板层、触控面板层及盖板层，以及分别与所述支撑背板层、所述发光器件层、所述偏光板层、所述触控面板层及所述盖板层一一对应的弹簧组件，所述支撑背板层的一端、所述发光器件层的一端、所述偏光板层的一端、所述触控面板层的一端及所述盖板层的一端均固定，所述支撑背板层的另一端、所述发光器件层的另一端、所述偏光板层的另一端、所述触控面板层的另一端及所述盖板层的另一端分别与相对应所述弹簧组件的所述圆筒连接。
  6. 根据权利要求5所述的柔性有机发光显示器，其中，所述柔性有机发光显示器还包括环绕所述显示面板设置的外边框，所述支撑背板层的一端、所述发光器件层的一端、所述偏光板层的一端、所述触控面板层的一端及所述盖板层的一端均可拆卸地固定连接在所述外边框上。
  7. 根据权利要求5所述的柔性有机发光显示器，其中，所述依次设置的支撑背板层、发光器件层、偏光板层、触控面板层及盖板层对应的弹簧组件的弹簧的许用变形系数沿着所述盖板层指向所述支撑背板层的方向依次减小。
  8. 根据权利要求1所述的柔性有机发光显示器，其中，所述第二固定部为L型固定件，所述L型固定件具有与所述圆形凹槽相配合的一圆形端部，所述L型固定件的另一端固定。
  9. 根据权利要求1所述的柔性有机发光显示器，其中，所述润滑层的制备材料为润滑油。
  10. 根据权利要求9所述的柔性有机发光显示器，其中，所述润滑油为聚α-烯烃合成油、聚醚合成油或烷基苯油中的至少一种；或，所述润滑油为矿物油。
  11. 根据权利要求1所述的柔性有机发光显示器，其中，所述弹簧组件对每厘米所述膜层所施加的力大于0N且小于0.098N。
  12. 根据权利要求1所述的柔性有机发光显示器，其中，所述弹簧的制备材料为不锈钢或碳纤维复合材料。
  13. 一种弹簧组件，其中，所述弹簧组件包括圆筒、第一固定部、弹簧及第二固定部，
    所述圆筒具有一空心筒体及位于所述空心筒体两端的第一筒盖和第二筒盖，所述第一筒盖的中心上设置有一通孔，所述第二筒盖的中心设置有一圆形凹槽；
    所述弹簧置于所述空心筒体的内部，所述弹簧具有第一端部和第二端部，所述第一端部穿过所述通孔以固定在所述第一固定部上，所述第二端部位于所述空心筒体中且固定在所述第二筒盖上；
    所述第二固定部具有与所述圆形凹槽相配合的一圆形端部，所述圆形端部插入所述圆形凹槽中，所述第二固定部的另一端固定。
  14. 根据权利要求13所述的弹簧组件，其中，所述第一端部是焊接在所述第一固定部上，或，所述第一端部为圆环，所述第一固定部上设置有钩形部，所述钩形部穿过所述圆环以固定所述第一端部。
  15. 根据权利要求13所述的弹簧组件，其中，所述第二端部是焊接在所述第二筒盖上，或，所述第二端部为圆环，所述第二筒盖上设置有钩形部，所述钩形部穿过所述圆环以固定所述第二端部。
  16. 根据权利要求13所述的弹簧组件，其中，所述第二固定部为L型固定件，所述L型固定件具有与所述圆形凹槽相配合的一圆形端部，所述L型固定件的另一端固定。
  17. 根据权利要求13所述的弹簧组件，其中，所述弹簧的制备材料为不锈钢或碳纤维复合材料。
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