WO2022141005A1 - 一种柔性显示面板以及显示设备 - Google Patents

一种柔性显示面板以及显示设备 Download PDF

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Publication number
WO2022141005A1
WO2022141005A1 PCT/CN2020/140444 CN2020140444W WO2022141005A1 WO 2022141005 A1 WO2022141005 A1 WO 2022141005A1 CN 2020140444 W CN2020140444 W CN 2020140444W WO 2022141005 A1 WO2022141005 A1 WO 2022141005A1
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WIPO (PCT)
Prior art keywords
layer
display panel
flexible display
along
group
Prior art date
Application number
PCT/CN2020/140444
Other languages
English (en)
French (fr)
Inventor
徐古胜
闫德松
Original Assignee
昆山国显光电有限公司
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 昆山国显光电有限公司 filed Critical 昆山国显光电有限公司
Priority to CN202080080042.4A priority Critical patent/CN114787898B/zh
Priority to PCT/CN2020/140444 priority patent/WO2022141005A1/zh
Publication of WO2022141005A1 publication Critical patent/WO2022141005A1/zh
Priority to US17/860,584 priority patent/US20220342449A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1624—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with sliding enclosures, e.g. sliding keyboard or display
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • G—PHYSICS
    • 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
    • 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
    • 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
    • G09F9/335—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 being organic light emitting diodes [OLED]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/206—Organic displays, e.g. OLED

Definitions

  • the present application relates to the technical field of display panels, and in particular, to a flexible display panel and a display device.
  • the flexible display panel of the flexible display device can be unfolded when it needs to be displayed and folded when it is not required to be displayed.
  • the folding or unfolding of the flexible display panel can be achieved by sliding or rolling, but since the flexible display panel needs to be connected with a device that helps it to slide or curl, it may cause the display area of the flexible display panel to be completely unrolled. Part of it cannot be observed by the user so that the flexible display panel cannot be fully utilized.
  • the flexible display panel includes a display layer and a layer group; the layer group includes at least one layer; and the length of at least one layer in the layer group along the first direction is greater than that of all layers. the length of the display layer along the first direction.
  • the layer group includes an upper layer group located above the display layer and a lower layer group located below the display layer; the upper layer group includes at least one layer; the lower layer group includes at least one layer; The length of at least one layer in the upper layer group and/or the lower layer group along the first direction is greater than the length of the display layer along the first direction.
  • the layer group includes only a lower layer group located below the display layer; the lower layer group includes at least one layer; and the length of at least one layer in the lower layer group along the first direction is greater than the display layer The length of the layer along the first direction.
  • the upper layer group includes a cover layer, and the length of the cover layer along the first direction is greater than the length of the display layer.
  • the lower layer set includes a support layer, the length of the support layer in the first direction is greater than the length of the display layer.
  • the flexible display panel further includes a filling layer, and the filling layer is located under the extension of the cover layer relative to the display layer, and/or located at the support layer relative to the display layer the top of the extension.
  • the sum of the thickness of the extension part of the cover layer and/or the extension part of the support layer and the filling layer is the same as the thickness of the unextended area on the flexible display panel.
  • the length difference between at least one layer in the upper layer group and/or the lower layer group and the display layer along the first direction ranges from 0.5 cm to 5 cm.
  • the length difference between at least one layer in the upper layer group and/or the lower layer group and the display layer along the first direction ranges from 1 cm to 4 cm.
  • several layers in the upper layer group and/or the lower layer group extend the same length relative to the display layer along the first direction.
  • the upper layer group and/or the lower layer group is disposed at one end of the display layer along the first direction relative to the extension of the display layer.
  • the upper layer group and/or the lower layer group are disposed at both ends of the display layer along the first direction relative to the extension of the display layer.
  • the flexible display panel further includes a flexible circuit board connected to an end of the display layer away from an end extended by the upper layer group and/or the lower layer group.
  • the extended end of the flexible display panel along the first direction is used for connecting with a terminal device.
  • the extended end of the flexible display panel along the first direction is used for connecting with the rotating shaft.
  • One of the embodiments of the present application provides a display device, which includes the above-mentioned flexible display panel, and a terminal device connected to the flexible display panel.
  • the flexible display panel performs sliding movement relative to the terminal device.
  • the flexible display panel performs a rolling motion around a rotating shaft on the terminal device.
  • FIG. 1 is a partial structural schematic diagram of a flexible display panel in which at least one layer in the upper layer group and the lower layer group is respectively extended along a first direction according to some embodiments of the present application;
  • FIG. 2 is a second partial structural schematic diagram of a flexible display panel in which at least one layer in the upper layer group and the lower layer group is respectively extended along the first direction according to some embodiments of the present application;
  • FIG. 3 is a schematic diagram of a partial structure of a display layer according to some embodiments of the present application.
  • FIG. 4 is a partial structural schematic diagram of an upper layer group according to some embodiments of the present application.
  • FIG. 5 is a partial structural schematic diagram of a lower layer group according to some embodiments of the present application.
  • FIG. 6 is a third partial structural schematic diagram of a flexible display panel in which at least one layer in the upper layer group and the lower layer group is respectively extended along the first direction according to some embodiments of the present application;
  • FIG. 7 is a partial structural schematic diagram of a flexible display panel in which only at least one layer in the upper layer group is extended along a first direction according to some embodiments of the present application;
  • FIG. 8 is a partial structural schematic diagram of a flexible display panel in which only at least one layer in the lower layer group is extended along a first direction according to some embodiments of the present application;
  • FIG. 9 is a fourth partial structural schematic diagram of a flexible display panel in which at least one layer in the upper-upper layer group and the lower-layer group is respectively extended along the first direction according to some embodiments of the present application;
  • FIG. 10 is a fifth schematic diagram of a partial structure of a flexible display panel in which at least one layer in the upper layer group and the lower layer group is respectively extended along the first direction according to some embodiments of the present application;
  • FIG. 11 is one of partial structural schematic diagrams of a flexible display panel connected to a motion mechanism according to some embodiments of the present application.
  • FIG. 12 is the second partial structural schematic diagram of the flexible display panel connected with the motion mechanism according to some embodiments of the present application.
  • FIG. 13 is a schematic structural diagram of a flexible display panel provided with extension portions at both ends along the first direction according to some embodiments of the present application;
  • FIG. 14 is a schematic structural diagram of a flexible display panel in the form of uniaxial curling according to some embodiments of the present application.
  • FIG. 15 is a schematic structural diagram of a flexible display panel in the form of biaxial curling according to some embodiments of the present application.
  • FIG. 16 is a schematic structural diagram of the flexible display panel in the form of biaxial curling according to some embodiments of the present application when it is folded.
  • the flexible display panel of one or more embodiments of the present application may be applied to display devices of different electronic products.
  • Different electronic products may include, but are not limited to, various terminal devices such as mobile phones, personal computers, keyboards, monitors, televisions, vehicle display terminals, and e-books.
  • the flexible display panels of some embodiments of the present application have a display area that can display content (eg, images) for viewing by a user.
  • the flexible display panel includes a non-curved portion and a curved portion, and the display area is located on the non-curved portion and the curved portion.
  • the flexible display panel can be used as the display screen of the sliding screen mobile phone.
  • the curved part of the flexible display panel is bent by the rotating shaft and then stored on the back of the display area or directly wound on the rotating shaft.
  • the curved part of the flexible display panel is stored on the back of the display area or directly wound on the rotating shaft to reduce the area of the flexible display panel exposed to the display area, so as to make the flexible display panel more portable; users can also choose to place the curved part of the flexible display panel from The display area is pulled out from the back to increase the area of the flexible display panel exposed to the display area to display more content.
  • the flexible display panel 100 may include a non-curved part 110 and a curved part 120 , the display area 101 is located on the front of the non-curved part 110 and the curved part 120 , and the curved part 120 can pass around a predetermined axis After the 130 is bent, it is accommodated on the back of the non-curved portion 110, wherein the surface of the flexible display panel 100 used for display can be understood as the front, and the surface opposite to it can be understood as the back.
  • some or all of the curved portion 120 may be curved about the predetermined axis 130 .
  • the bending angle of the bending portion 120 about the predetermined axis 130 may be greater than 120°.
  • the bending angle of the curved portion 120 about the predetermined axis 130 may be greater than 150°. In some embodiments, the bending angle of the curved portion 120 about the predetermined axis 130 may be greater than 170°. In some embodiments, the bending angle of the curved portion 120 about the predetermined axis 130 may be approximately 180° (within ⁇ 5°); in some embodiments, the bending angle of the curved portion 120 about the predetermined axis 130 may be much greater than 180° °, that is, it can be wound on the rotating shaft 200.
  • the bending angle of the bending part 120 around the predetermined axis 130 is 360°, 720° °, 1080°..., wherein, the predetermined axis 130 in this embodiment may be the axis of the rotating shaft 200 .
  • the bending angle of the bending part 120 around the predetermined axis may refer to the angle of the central angle corresponding to the part of the bending part 120 that is bent around the predetermined axis 130 .
  • both the non-curved portion 110 and the curved portion 120 may be used to display images.
  • the display surface in order to allow the bending portion 120 of the flexible display panel 100 to be bent along the first direction, and to make the flexible display panel 100 have sufficient rigidity when fully unfolded, the display surface can be maintained when the bending portion 120 displays an image. Flat without affecting the display effect of the flexible display panel, the flexible display panel 100 has different stiffness requirements in different directions.
  • the sliding direction of the flexible display panel is the direction in which one end of the flexible display panel moves when the flexible display panel is unfolded or retracted.
  • substantially perpendicular or substantially parallel in this application means that in the direction relative to the perpendicular or parallel, a small amount of error may be allowed, and the error may be within ⁇ 5°.
  • the error may be between ⁇ 4°.
  • the error may be between ⁇ 3°.
  • the error may be between ⁇ 1°.
  • the angle between the first direction and the vertical line of the predetermined axis 130 may be within 5°
  • the angle between the second direction and the parallel line of the predetermined axis 130 may be within 5°.
  • the stiffness of the curved portion 120 in the first direction is between 0.01 GPa and 100 GPa; in some embodiments, the stiffness of the curved portion 120 in the first direction is between 0.01 GPa and 50 GPa; in some embodiments , the stiffness of the bending portion 120 in the first direction is between 0.01GPa and 20 GPa; in some embodiments, the stiffness of the bending portion 120 in the first direction is between 0.01GPa and 10GPa; in some embodiments, the bending portion The stiffness of the bending portion 120 in the first direction is between 0.01GPa and 5GPa; in some embodiments, the stiffness of the bending portion 120 in the first direction is between 0.01GPa and 1GPa.
  • the stiffness of the curved portion 120 in the second direction is between 10GPa and 1000GPa; in some embodiments, the stiffness of the curved portion 120 in the second direction is between 10GPa and 800GPa; in some embodiments, The stiffness of the bending portion 120 in the second direction is between 10GPa and 500GPa; in some embodiments, the stiffness of the bending portion 120 in the second direction is between 10GPa and 300GPa.
  • the flexible display panel 100 may be applied to the display device 1000 .
  • the display device 1000 may include a flexible display panel 100 and a rotating shaft 200 .
  • the display device 1000 may have a variable area display screen.
  • the display area 101 in which the flexible display panel 100 is presented to the user's field of view may serve as a display screen of the display device 1000 .
  • part or all of the curved portion 120 of the flexible display panel 100 can be stored in a storage area of the display device 1000 (eg, the back of the non-curved portion 110 ) or wound around the rotating shaft 200 after being bent around the rotating shaft 200 .
  • the part of the bending part 120 wound on the rotating shaft 200 and located in the storage area is invisible to the user, and the part located outside the storage area or not wound around the rotating shaft 200 is visible to the user.
  • the display area 101 on the portion of the non-curved portion 110 and the curved portion 120 visible to the user may serve as a display screen of the display device 1000 .
  • the display area 101 on the portion of the non-curved portion 110 and the curved portion 120 visible to the user may serve as a display screen of the display device 1000 .
  • the curved portion 120 of the flexible display panel 100 can be pulled out from the storage area (eg, the back of the non-curved portion 110 ) by sliding movement along the first direction through the rotating shaft 200 , as an option to expand the display area 101 It is presented in the user's field of vision and becomes a part of the display screen of the display device 1000 , thereby increasing the display screen area of the display device 1000 .
  • the curved portion 120 can also be rolled into the back of the non-curved portion 110 through the rotating shaft 200 for storage, thereby increasing the display screen area of the display device 1000 .
  • the display area 101 on this portion will not be observed by the user, and the display area 101 on this portion will not be observed by the user. It can be set to the screen-off state; when at least a part of the bending part 120 around the rotation axis 200 is pulled out to the front of the flexible display panel 100, the part of the display area 101 that returns to the front can be turned into a bright-screen state and display content, thereby The area of the display area 101 that the user can see is increased.
  • the flexible display panel 100 may include a display layer 10 and a layer group.
  • the layer group may include an upper layer group 20 and a lower layer group 30 , wherein the upper layer group 20 is located above the display layer 10 and the lower layer group 30 is located below the display layer 10 .
  • the layer group may only include the lower layer group 30 located below the display layer 10 .
  • the upper and lower referred to in this application refer to the directions of the front and back of the display surface of the non-curved portion 110 of the flexible display panel 100 . The direction of the front of the display surface of the flexible display panel 100 is upward, and the The direction of the back is down.
  • the display layer 10 may correspond to the display area 101 of the flexible display panel 100 (including the non-curved part 110 and the curved part 120 ) for displaying images.
  • the types of display devices used for image display in the display layer 10 may include but are not limited to: Organic Light Emitting Diode (OLED), Light Emitting Diode (LED), Micro Light Emitting Diode (Micro Light Emitting Diode, Micro LED), sub-millimeter light-emitting diode (Mini Light Emitting Diode, Mini LED), etc.
  • the display layer 10 may include at least two layers.
  • the display layer 10 may include a display device layer 11 and a display driving layer 12 , wherein the display driving layer 12 may be located under the display device layer 11 .
  • the display device layer 11 may include an organic light emitting diode (Organic Light Emitting Diode, OLED) light-emitting layer, and the OLED light-emitting layer includes a plurality of pixel units arranged in an array, and the pixel units emit light to make the display device layer Can display images.
  • the display driving layer 12 may be used to provide the display device layer 11 with display-related control devices.
  • the display driving layer 12 may include a pixel driving circuit, and the pixel driving circuit is electrically connected to the display device layer 11 for controlling the display image of the display device layer 11 .
  • the pixel driving circuit may include, but is not limited to, a TFT (Thin Film Transistor) device, a capacitor device, and the like.
  • the display layer 10 may further include an encapsulation layer 13 , and the encapsulation layer 13 may be located on the display device layer 11 .
  • the OLED light-emitting layer in the display device layer 11 includes organic materials, the organic materials are sensitive to oxygen and water vapor and are easily eroded by oxygen and water vapor and eventually fail, thereby reducing the lifetime of the OLED light-emitting layer.
  • passivation layer encapsulation technology atomic layer deposition (ALD) technology, Barix packaging technology, glass frit (FRIT) packaging technology, thin-film (Thin-Film Encapsulation, TFE) technology can be used.
  • the display device layer 11 is encapsulated by an encapsulation technology, and an encapsulation layer 13 is formed on the display device layer 11.
  • the encapsulation layer 13 can block oxygen and water vapor from entering the display device layer 11 to avoid erosion of the organic materials in the OLED light-emitting layer.
  • the encapsulation layer 13 may be a thin film structure.
  • the material of the encapsulation layer 13 may include, but is not limited to, silicon nitride, polyethylene, polyacrylate, ceramic, glass frit, and the like.
  • the display layer 10 may further include a planarization layer 14 , and the planarization layer 14 may be located between the display device layer 11 and the display driving layer 12 .
  • the display driving layer 12 since the display driving layer 12 has a pixel driving circuit, in order to achieve electrical connection with the display device layer 11 , the display driving layer 12 has various wirings and vias, so that the upper surface of the display driving layer 12 may There are fluctuations. If the display device layer 11 is directly disposed on the display driving layer 12 , the display surface of the display device layer 11 (ie, the surface facing the front of the flexible display panel 100 ) will be uneven, affecting its display effect.
  • the planarization layer 14 can be disposed between the display device layer and the display driving layer 12, and the lower surface of the planarization layer 14 can be attached to the upper surface of the display driving layer 12 (ie, the shape of the lower surface of the planarization layer 14). may correspond to the shape of the upper surface of the display driving layer 12), and the upper surface of the planarization layer 14 may be a relatively flat plane.
  • the display device layer 11 is provided on the upper surface of the planarization layer 14, the display device layer 11 has a flat display surface to ensure its display effect.
  • the planarization layer 14 may also be provided with through holes from top to bottom, so as to facilitate the electrical connection between the display driving layer 12 and the display device layer 11 .
  • planarization layer 14 may include, but is not limited to, electrical insulator materials such as silicon dioxide, silicon nitride, organic polymers (eg, acrylic, melamine- or urethane based polymers.) or organic -Inorganic hybrid composite materials, etc.
  • electrical insulator materials such as silicon dioxide, silicon nitride, organic polymers (eg, acrylic, melamine- or urethane based polymers.) or organic -Inorganic hybrid composite materials, etc.
  • the display layer 10 may be a multi-layer structure. In order to fix the layers in the display layer 10 together, an adhesive layer (not shown in the figure) may also be provided between two adjacent layers in the display layer 10. shown), the adhesive layer can reliably bond two adjacent layers of the display layer 10 together.
  • the adhesive layer in the display layer 10 may be an optical adhesive with strong adhesion.
  • the adhesive layer in the display layer 10 may be Optically Clear Adhesive (OCA).
  • OCA Optically Clear Adhesive
  • the adhesive layer in the display layer 10 may be an ultraviolet curing adhesive (Ultraviolet Rays, UV adhesive).
  • the adhesive layer in the display layer 10 may be made of the same material as the adhesive layer 24 in the upper set 20 or the adhesive layer 34 in the lower set 30 . In some embodiments, the adhesive layer in the display layer 10 may be made of different materials from the adhesive layer 24 in the upper layer group 20 or the adhesive layer 34 in the lower layer group 30 to meet the requirements of the display layer 10, the upper layer The group 20 and the lower layer group 30 respectively correspond to different bonding strength requirements.
  • the adhesive layer 24 and the adhesive layer 34 reference may be made to FIG. 4 and FIG. 5 and their related descriptions, respectively.
  • the upper layer set 20 may be used to protect the display layer 10, for example, the upper layer set 20 may protect the display layer 10 from being damaged by impact.
  • the upper layer group 20 may include a cover layer 21 , and the cover layer 21 may protect the display layer 10 .
  • the cover layer 21 may be glass (eg, Ultra Thin Glass (UTG)).
  • the cover layer 21 may be polymethyl methacrylate (Polymethyl Methacrylate, PMMA).
  • the cover layer 21 may be transparent polyimide film (CPI).
  • the upper layer group 20 may also provide a touch function for the flexible display panel.
  • the user of the flexible display panel can operate the image displayed on the flexible display panel by touching the upper layer group.
  • the upper layer group 20 may further include a touch layer 22 .
  • the touch layer 22 is disposed below the cover layer 21 for sensing a user's touch action on the cover layer 21 .
  • the touch layer 22 may be a polyethylene terephthalate (PET) film, an indium tin oxide (Indium tin oxide, ITO) film, or the like.
  • the touch layer 22 may include a touch sensor that detects touch actions.
  • touch sensors may include, but are not limited to, infrared sensors, resistive sensors, surface acoustic wave sensors, capacitive sensors, and the like.
  • the cover layer 21 can protect the touch layer 22 to prevent the touch layer 22 from being damaged by impact.
  • the touch layer 22 can be directly embedded in the display layer 10 to reduce the thickness of the flexible display panel 100 while realizing the touch function.
  • the upper layer group 20 can also absorb the reflected light of the metal electrodes in the flexible display panel (for example, the metal electrodes in the touch layer, the metal electrodes in the display device layer) to the external light, so as to reduce the interference of the external light, The contrast of the displayed image is increased so that the user of the flexible device can clearly see the displayed image.
  • the upper layer set 20 may also include an optical layer 23 .
  • the optical layer 23 may include a circular polarizer or a linear polarizer for absorbing or refracting the reflected light, so as to reduce the interference of the reflected light to the displayed image of the display device layer 11 .
  • the material of the polarizer may include, but is not limited to, Triacetyl Cellulose (TAC), Polyethylene Terephthalate (PET), Cyclo Olefin Polymer (Cyclo Olefin Polymer) , COP), polymethyl methacrylate (Polymethyl Methacrylate, PMMA) and so on.
  • the optical layer may be located between the touch layer 22 and the display layer 10 .
  • upper layer group 20 may include at least one layer. In some embodiments, upper layer set 20 may include only cover layer 21 . In some embodiments, the upper set of layers 20 may include a cover layer and an optical layer. In some embodiments, the upper layer group 20 may include a cover layer 21 , a touch layer 22 and an optical layer 23 at the same time. In some embodiments, as shown in FIG. 4 , in order to securely connect two adjacent layers in the upper layer group 20 , the upper layer group 20 may further include an adhesive layer 24 disposed between two adjacent layers in the upper layer group 20 , the cover layer 21 and the touch layer 22 and the touch layer 22 and the optical layer 23 can be reliably bonded together by the adhesive layer 24 .
  • the adhesive layer 24 may be a very strong adhesive optical glue. In some embodiments, the adhesive layer 24 may be Optically Clear Adhesive (OCA). In some embodiments, the adhesive layer 24 may be an ultraviolet curing adhesive (Ultraviolet Rays, UV adhesive).
  • the lower layer group 30 may be used to support the upper layer group 20 and the display layer 10 .
  • the lower layer group 30 may include a support layer 31 disposed under the display layer 10 (display driving layer 14 ) for supporting the display layer 10 and the upper layer group 20 .
  • the material of the support layer 31 may include, but is not limited to, polyimide (PI) material, polyethylene terephthalate (PET) material, polybenzimidazole (Polybenzimidazoles) , PBI) material, polyetheretherketone (Polyetheretherketone, PEEK) material, polyvinylidene fluoride (Polyvinylidene fluoride, PVDF) material, polyether plastic (Polyphenylenesulphide, PPS) material, and any combination of the above materials.
  • the support layer 31 may be a glass material with bending properties, and it is only necessary to ensure that the thickness of the glass meets the bending requirements.
  • the mass proportion of polyimide is 50%-100%; in some embodiments, in the several composite materials of the support layer 31, the polyimide The mass proportion of amine is 60% to 90%.
  • the mass ratio of polyethylene terephthalate is 0-20%; in some embodiments, the mass ratio of polyethylene terephthalate is 0-10%; In some embodiments, the mass ratio of polyethylene terephthalate is 0-4%.
  • the mass ratio of polybenzimidazole is 0-30%; in some embodiments, the mass ratio of polybenzimidazole is 5-20%; in some embodiments, polyether ether ketone The mass ratio of 0 to 4%.
  • the mass ratio of polyvinylidene fluoride is 0-10%; in some embodiments, the mass ratio of polyvinylidene fluoride is 0-5%. In some embodiments, the mass ratio of polyether-based plastics is 0-10%; in some embodiments, the mass ratio of polyether-based plastics is 0-5%.
  • the lower layer group 30 may further include an isolation layer (not shown in the figure) disposed between the support layer 31 and the display driving layer 12 for isolating the support layer 31 from the display driving layer 12 .
  • the material of the isolation layer may be an insulating material.
  • the material of the isolation layer may be silicon oxide film, polypropylene film, polyester film, polystyrene film and the like.
  • insulating paint, insulating glue, etc. may also be applied on the surface of the support layer 31 in contact with the display driving layer 12 to replace the isolation layer.
  • the curved portion 120 and the non-curved portion 110 of the flexible display panel 100 perform image display together.
  • deformation may occur due to stress (eg, its own gravity), so that the surface on which the image is displayed is relatively uneven or flexed from the display surface of the non-curved portion 110 , which affects the display effect of the flexible display panel 100 .
  • the lower layer group 30 can also provide a certain rigid support when the flexible display panel 100 is unfolded, so as to keep the surface of the flexible display panel 100 flat.
  • the lower set may also include a reinforced support layer 32 .
  • the reinforced support layer 32 may be disposed under the support layer 31 , and the reinforced support layer 32 has sufficient rigidity to support the display layer 10 and the upper layer group 20 , thereby improving the rigidity of the flexible display panel 100 .
  • the material of the reinforcement support layer 32 may comprise a rigid material.
  • the rigid material used to reinforce the support layer 32 may be a material with a higher Young's modulus.
  • the Young's modulus of the rigid material used to reinforce the support layer 32 may range from 40 Gpa to 100 Gpa.
  • the Young's modulus of the rigid material used to strengthen the support layer may range from 50 Gpa to 100 Gpa.
  • the Young's modulus of the rigid material used to strengthen the support layer may range from 40 Gpa to 70 Gpa.
  • the material of the reinforced support layer 32 may include, but is not limited to, steel, titanium alloy, aluminum alloy, glass, carbon fiber, glass fiber and other materials with certain rigidity.
  • a certain number of pattern holes may be provided on the reinforcement support layer 32 , and the pattern holes may be used to adjust the rigidity of the reinforcement support layer 32 .
  • the rigid material selected for the reinforcement support layer 32 is too rigid, the reinforcement support layer 32 cannot be bent when the flexible display panel 100 is bent. In this case, a certain number of graphics can be arranged on the reinforcement support layer 32 The more holes in the pattern, the less rigid the reinforced support layer 32 is.
  • the shapes of the pattern holes may include, but are not limited to, regular or irregular shapes such as circles, triangles, diamonds, squares, and the like.
  • the reinforced support layer 32 may be replaced by a reinforcing rib, which is implemented to provide a certain rigid support for the flexible display panel 100 when it is unfolded.
  • the lower layer group 30 may further include a buffer layer 33 .
  • the buffer layer may be used for buffering when the flexible display panel 100 is impacted.
  • the buffer layer 33 may be disposed below the support layer 31 and between the support layer 31 and the reinforced support layer 32 .
  • the material of the buffer layer 33 may include, but is not limited to, foam materials, such as polyurethane (Polyurethane, PU) foam, silicon foam, and acrylic foam.
  • lower layer group 30 may include at least one layer. In some embodiments, the lower layer group 30 may include only the support layer 31 . In some embodiments, the lower set of layers may include support layer 31 and reinforcement support layer 32 . In some embodiments, lower layer set 30 may include support layer 31 , buffer layer 33 and reinforcement support layer 32 . In some embodiments, in order to securely connect the layers between the lower layer group 30, the lower layer group 30 may further include an adhesive layer 34 disposed between two adjacent layers, through which the support layer 31 can be attached It is reliably bonded with the buffer layer 33 , the buffer layer 33 and the reinforced support layer 32 . In some embodiments, the adhesive layer 34 may be a very strong optical adhesive.
  • the adhesive layer 34 may be Optically Clear Adhesive (OCA). In some embodiments, the adhesive layer 34 may be an ultraviolet curing adhesive (Ultraviolet Rays, UV adhesive). In some embodiments, the adhesive layers 34 in the lower set 30 may be made of the same material as the adhesive layers 24 in the upper set 20 . In some embodiments, the adhesive layer 34 in the lower layer group 30 may be made of different materials from the adhesive layer 24 in the upper layer group 20 to satisfy the adhesion between the layers in the upper layer group 20 and the lower layer group 30 strength needs.
  • OCA Optically Clear Adhesive
  • UV adhesive ultraviolet curing adhesive
  • the flexible display panel 100 can be retracted or unfolded through a rolling motion or a sliding motion.
  • the bending part 120 of the flexible display panel 100 can be connected to the rotating shaft 200 .
  • the rotating shaft 200 can drive the bending part 120 to perform a rolling motion around the rotating shaft 200 , so that part of the bending part 120 Or all of them are gradually wound on the rotating shaft 200.
  • part or all of the bending part 120 is accommodated on the rotating shaft 200, and part or all of the bending part 120 will not be observed by the user, and will not be observed by the user.
  • the display area 101 may not display images; when the flexible display panel 100 needs to be unfolded, the rotation of the rotating shaft 200 can make part or all of the bending part 120 unfold around the rotating shaft 200, and part or all of the bending part 120 is presented in the user's field of vision,
  • the display area 101 on the curved portion 120 presented in the user's field of view may serve as an extended display area to present an image to the user together with the display area (main display area) on the non-curved portion 110 .
  • the bending part 120 of the flexible display panel can be connected with a motion mechanism of the terminal device, and the motion mechanism can drive the bending part 120 to perform sliding movement.
  • part of the bending part 120 or All exit from the back of the non-curved portion 110 (ie, the storage area) through the rotating shaft 200 through the sliding movement in the first direction, and part or all of the curved portion 120 moves to the front of the flexible display panel 100 to be presented in the user's field of vision
  • part or all of the display area 101 on the curved part 12 can be used as an extended display area to present images to the user together with the main display area on the non-curved part 110;
  • the flexible display panel 100 is folded, part or all of the curved part 120
  • the back side of the non-bending part 110 ie the storage area
  • the bending part 120 located in the storage area will not appear in the user's field of vision, and the bending part 120 located in the storage area
  • the display area 101 on the part 120 may not perform image display.
  • at least a part of the curved portion 120 of the flexible display panel 100 needs to be
  • the display area 101 on the curved portion 120 and the non-curved portion 110 can present images to the user to the greatest extent, so as to ensure that the display layer of the flexible display panel 100 is located as far as possible
  • the front surface of the flexible display panel 100 provides image display, and an extension 140 may be provided at at least one end of the flexible display panel 100 along the first direction to be connected with the rotating shaft 200 or the motion mechanism.
  • the extension portion 140 may include additional lengths of the upper layer group 20 and/or the lower layer group 30 respectively relative to the display layer 10 along the first direction, so that the flexible display panel 100 includes the curved portion 120 of the display layer 10 not directly connected to the rotating shaft 200 or the motion mechanism, and the non-display layer part disposed at one end of the flexible display panel 100 along the first direction is connected with the rotating shaft 200 or the motion mechanism, so that when the flexible display panel 100 is fully unfolded, the display in the bending portion 120
  • the layer 10 is located on the front of the flexible display panel 100 as much as possible, and the display area 101 on the curved part 120 can be used as an extended display area and the main display area on the non-curved part 110 to jointly present an image to the user, so that the display area 101 of the flexible display panel 100 The ability to present the image to the user to the greatest extent possible.
  • At least one layer of upper set 20 and/or lower set 30 may be elongated along the first direction such that at least one layer of upper set 20 and/or lower set 30 has a length along the first direction greater than the length of the display layer 10 along the first direction.
  • the extension of at least one layer of the upper layer group 20 and/or the lower layer group 30 along the first direction relative to the display layer 10 can be used as an extension 140 of one end of the flexible display panel 100 to be connected to the rotating shaft 200 or the motion mechanism.
  • the length of the cover layer 21 in the upper layer group 20 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the adhesive layer 24 in the upper layer set 20 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the touch layer 22 in the upper layer group 20 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the optical layer 23 in the upper layer group 20 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the cover layer 21 and the adhesive layer 24 in the upper layer group 20 along the first direction is greater than the length of the display layer 10 along the first direction. In some embodiments, the length of the cover layer 21 , the adhesive layer 24 and the optical layer 23 in the upper layer group 20 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the support layer 31 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the strengthening support layer 32 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the buffer layer 33 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the middle adhesive layer 34 of the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the middle isolation layer of the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the length of the support layer 31 , the reinforcement support layer 32 and the adhesive layer 34 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction. In some embodiments, the length of the support layer 31 and the reinforced support layer 32 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction. In some embodiments, the length of the support layer 31 , the reinforcement support layer 32 , the buffer layer 33 and the adhesive layer 34 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction. In some embodiments, the length of the support layer 31 , the reinforcement support layer 32 , the buffer layer 33 , the adhesive layer 34 and the isolation layer in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the difference between the lengths of at least one layer in the upper layer group 20 and/or the lower layer group 30 along the first direction and the length of the display layer 10 along the first direction needs to be carefully selected in combination with the application and the properties of the materials; too long not only wastes materials, but also takes up additional space , too short and unable to achieve the necessary function.
  • the length difference between at least one layer of the upper layer group 20 and/or the lower layer group 30 along the first direction and the length of the display layer 10 along the first direction is between 0.5 cm and 5 cm.
  • the length difference between at least one layer of the upper layer group 20 and/or the lower layer group 30 along the first direction and the length of the display layer 10 along the first direction is between 0.5 cm-3 cm.
  • the length difference between at least one layer of the upper layer group 20 and/or the lower layer group 30 along the first direction and the length of the display layer 10 along the first direction is between 1 cm and 2 cm. In some embodiments, the length difference between at least one layer of the upper layer group 20 and/or the lower layer group 30 along the first direction and the length of the display layer 10 along the first direction is between 1.2-1.6 cm.
  • the difference between the lengths of at least one layer in the upper layer group 20 and/or the lower layer group 30 along the first direction and the length of the display layer 10 along the first direction is equal to at least one layer in the upper layer group 20 and/or the lower layer group 30
  • the length of one layer extending along the first direction is also the length of the extension 140 at one end of the flexible display panel 100 along the first direction.
  • the length of at least one layer in the upper layer set 20 and/or the lower layer set 30 extending in the first direction may be related to the material properties of the layers themselves, eg, the materials of the layers have greater tensile strength, which The length of the layer extending along the first direction can be smaller, that is, the extension 140 at one end of the flexible display panel 100 along the first direction has a smaller length to have a greater connection strength with the rotating shaft 200 or the motion mechanism.
  • the length of at least one layer in the upper layer group 20 and/or the lower layer group 30 extending along the first direction may be connected to the connection between the extension 140 at one end of the flexible display panel 100 along the first direction and the rotating shaft or the motion mechanism
  • the extension 140 of one end of the flexible display panel 100 along the first direction may be connected by the rotating shaft 200 or the motion mechanism through bonding.
  • the length of at least one layer in the lower layer group 30 extending along the first direction may be smaller, which can also ensure the connection strength between the extension portion 140 and the rotating shaft 200 or the movement mechanism.
  • the length of at least one layer in the upper layer group 20 and/or the lower layer group 30 extending along the first direction may be related to the radius of the rotating shaft 200 .
  • the flexible display panel 100 is in a fully expanded state
  • the display layer 10 in the flexible display panel 100 can be completely located on the front of the flexible display panel 100 to fully display images, for example, when the flexible display panel 100 When the display panel 100 is fully unfolded by the sliding movement along the first direction, all the display areas 101 on the curved portion 120 are located on the front of the flexible display panel 100.
  • the extension portion 140 at one end of the flexible display panel 100 along the first direction is bent around the rotation shaft 200. The larger the radius of the rotation shaft 200 is, the longer the extension portion 140 is along the first direction.
  • the length of the layer extending in the first direction may be greater. In some embodiments, the length of at least one layer in the upper layer group 20 and/or the lower layer group 30 extending along the first direction may be greater than or equal to 1/3 of the radial circumference of the rotating shaft 200 .
  • only at least one layer in the upper layer group 20 may be extended along the first direction as the extension portion 140 of one end of the flexible display panel 100 .
  • only one layer of the upper set of layers may be elongated in the first direction.
  • only the cover layer 21 in the upper layer group 20 may be extended along the first direction, so that the length of the cover layer 21 along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the touch layer 22 in the upper layer group 20 may be extended along the first direction, so that the length of the touch layer 22 along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the optical layers 23 in the upper layer group 20 may be extended along the first direction, so that the length of the optical layer 23 along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the adhesive layer 24 in the upper layer group 20 may be extended along the first direction, so that the length of the adhesive layer along the first direction is greater than the length of the display layer 10 along the first direction.
  • several layers in the upper layer group 20 may be extended along the first direction, so that the lengths of several layers in the upper layer group 20 along the first direction are greater than the lengths of the display layers 10 along the first direction.
  • the cover layer 21 and the adhesive layer 24 in the upper layer group 20 may be respectively extended along the first direction, so that the length of the cover layer 21 and the adhesive layer along the first direction is greater than that of the display layer 10 along the first direction. length in the first direction.
  • the cover layer 21 , the adhesive layer 24 and the optical layer 23 in the upper layer group 20 can be respectively extended along the first direction, so that the cover layer 21 , the adhesive layer and the optical layer 23 are extended along the first direction.
  • the length of the direction is greater than the length of the display layer 10 along the first direction.
  • several layers in the upper layer group 20 may have the same length extending relative to the display layer 10 along the first direction.
  • the lengths of several layers in the upper layer group 20 extending in the first direction relative to the display layer 10 may not be exactly the same or completely different.
  • the cover layer 21 when the cover layer 21 , the touch layer 22 , the optical layer 23 and/or the adhesive layer 24 are respectively extended along the first direction, the cover layer 21 is opposite to the display layer along the first direction
  • the length of 10 can be greater than the length of the touch layer 22 and the optical layer 23 along the first direction, so that the length of the cover layer 21 along the first direction is greater than the length of the touch layer 22 and the optical layer 23 along the first direction, so The cover layer 21 can sufficiently protect the touch layer 22 and the optical layer 23 .
  • the difference between the lengths of the cover layer 21 along the first direction, the touch layer 22 and the optical layer 23 along the first direction is within 0 ⁇ 2 mm. In some embodiments, the difference between the lengths of the cover layer 21 along the first direction, the touch layer 22 and the optical layer 23 along the first direction is within 0-1 mm. In some embodiments, the difference between the lengths of the cover layer 21 along the first direction, the touch layer 22 and the optical layer 23 along the first direction is within 0 ⁇ 0.5 mm.
  • only at least one layer in the lower layer group 30 may be extended along the first direction as the extension portion 140 of one end of the flexible display panel 100 .
  • only one layer of the lower set of layers 30 may be elongated in the first direction.
  • only the support layers 31 in the lower layer group 30 may be extended along the first direction, so that the length of the support layers 31 along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the strengthening support layers 32 in the lower layer group 30 may be extended along the first direction, so that the length of the strengthening support layers 32 along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the buffer layer 33 in the lower layer group 30 may be extended along the first direction, so that the length of the buffer layer along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the adhesive layer 34 in the lower layer group 30 may be extended along the first direction, so that the length of the adhesive layer 34 along the first direction is greater than the length of the display layer 10 along the first direction.
  • only the isolation layers in the lower layer group 30 may be extended along the first direction, so that the length of the isolation layers along the first direction is greater than the length of the display layer 10 along the first direction.
  • several layers in the lower layer group 30 may be respectively extended along the first direction, so that the lengths of several layers in the lower layer group 30 along the first direction are greater than the lengths of the display layers 10 along the first direction.
  • the support layer 31 , the reinforcement support layer 32 , the buffer layer 33 and the adhesive layer 34 in the lower layer group may be respectively extended along the first direction, so that the support layer 31 , the reinforcement support layer 32 , the buffer layer 33 and the The length of the adhesive layer 34 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the support layer 31 , the strengthening support layer 32 , the buffer layer 33 , the adhesive layer 34 and the isolation layer in the lower layer group 30 may be respectively extended along the first direction, so that the support layer 31 , the strengthening support layer 32 , The lengths of the buffer layer 33 , the adhesive layer 34 and the isolation layer along the first direction are all greater than the lengths of the display layer 10 along the first direction.
  • several layers in the lower layer group 30 may have the same length extending relative to the display layer 10 in the first direction, such that several layers in the lower layer group 30 have the same length in the first direction.
  • the lengths of the layers in the lower layer group 30 extending in the first direction relative to the display layer 10 may not be exactly the same or completely different, so that the lengths of the layers in the lower layer group 30 along the first direction are not identical or completely different.
  • At least one layer in the upper layer group 20 and at least one layer in the lower layer group 30 may be jointly extended along the first direction to jointly serve as an extension of one end of the flexible display panel 100 140.
  • one layer in the upper layer group 20 and one layer in the lower layer group 30 may be simultaneously elongated along the first direction.
  • the cover plate layer 21 in the upper layer group 20 and the support layer 31 in the lower layer group 30 may be extended along the first direction at the same time, so that the cover plate layer 21 in the upper layer group 20 and the support layer 31 in the lower layer group 30 The length of the support layer 31 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the lengths of the cover layer 21 and the support layer 31 along the first direction may be the same or different.
  • the cover plate layer 21 in the upper layer group 20 and the strengthening support layer 32 in the lower layer group 30 can be respectively extended along the first direction, so that the cover plate layer 21 in the upper layer group 20 and the lower layer group 30 are respectively extended.
  • the length of the strengthening support layer 32 in the first direction is greater than the length of the display layer 10 along the first direction. In some embodiments, the lengths of the cover layer 21 and the strengthening support layer 32 along the first direction may be the same or different.
  • several layers in the upper layer group 20 and one layer in the lower layer group 30 may be respectively extended along the first direction, so that several layers in the upper layer group 20 and one layer in the lower layer group 30 are extended along the first direction.
  • the length of the direction is greater than the length of the display layer 10 along the first direction.
  • the cover layer 21, the adhesive layer 24 in the upper layer group 20, and the support layer 31 in the lower layer group 30 may be respectively extended along the first direction, so that the cover plate layers 21, 24 in the upper layer group 20, The length of the adhesive layer 24 and the support layer 31 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the cover layer 21 , the optical layer 23 , the adhesive layer 24 in the upper layer group 20 and the supporting layer 31 in the lower layer group 30 may be respectively extended along the first direction, so that the cover layer in the upper layer group 20
  • the length of the board layer 21 , the optical layer 23 , the adhesive layer 24 and the support layer 31 in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • several layers in the upper layer group 20 and one layer in the lower layer group 30 may have the same, not identical, or completely different lengths along the first direction.
  • several layers in the upper layer group 20 have the same length in the first direction but different lengths in the first direction than one layer in the lower layer group 30 .
  • one layer in the upper layer group 20 and several layers in the lower layer group 30 may be respectively extended along the first direction.
  • the cover layer 21 in the upper layer group 20 and the supporting layer 31, the reinforcing support layer 32, and the adhesive layer 34 in the lower layer group 30 may be respectively extended along the first direction, so that the upper layer group 20
  • the length of the support layer 31 , the reinforcement support layer 32 , and the adhesive layer 34 in the cover layer 21 and the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the cover layer 21 in the upper layer group 20 and the support layer 31, the reinforcing support layer 32, the buffer layer 33, the adhesive layer 34 and the isolation layer in the lower layer group 30 can be respectively extended along the first direction , so that the lengths of the cover layer 21 in the upper layer group 20 and the support layer 31, the strengthening support layer 32, the buffer layer 33, the adhesive layer 34 and the isolation layer along the first direction in the lower layer group 30 are greater than the lengths of the display layer 10 along the first direction the length of the direction.
  • one layer of the upper layer group 20 and several layers in the lower layer group 30 may have the same, not identical, or completely different lengths along the first direction.
  • several layers in the lower layer group 30 have the same length in the first direction but different lengths in the first direction than one layer in the upper layer group 20 . In some embodiments, several layers in the upper layer group 20 and several layers in the lower layer group 30 may be respectively extended along the first direction.
  • the optical layer 23 , the adhesive layer 24 and the supporting layer 31 , the strengthening supporting layer 32 , the buffer layer 33 , and the adhesive layer 34 in the lower layer group 30 are extended along the first direction, so that the cover layer 21 , the optical layer 21 in the upper layer group 20 , the optical layer
  • the length of the layer 23 , the adhesive layer 24 and the supporting layer 31 , the reinforcing supporting layer 32 , the buffer layer 33 and the adhesive layer in the lower layer group 30 along the first direction is greater than the length of the display layer 10 along the first direction.
  • the lengths of the layers in the upper layer group 20 and the layers in the lower layer group 30 extending in the first direction relative to the display layer 10 may be the same, not identical, or completely different.
  • several layers in the upper layer group 20 have the same length in the first direction
  • several layers in the lower layer group 20 have the same length in the first direction
  • several layers in the upper layer group 20 have the same length in the first direction
  • the length in the first direction is different from that of several layers in the lower layer group.
  • At least one layer in the upper layer group 20 and/or the lower layer group 30 may be integrally formed with its corresponding layer along the first direction relative to the extension of the display layer 10 and have the same material and thickness.
  • the extension of at least one layer in the upper layer group 20 and/or the lower layer group 30 along the first direction relative to the display layer 10 may be the extension of at least one layer in the upper layer group 20 and/or the lower layer group 30 along the first direction.
  • the direction extends (or additionally) the length relative to the display layer 10 .
  • At least one layer in the upper layer group 20 and/or the lower layer group 30 may be disposed apart from the extension of the display layer 10 and its corresponding layer along the first direction, so that the extension of the layer and its corresponding layer have the same or different materials and/or thicknesses.
  • the flexible display panel 100 may include an unextended area having the display layer 10 (including the curved portion 120 and The non-bending portion 110) and the extension portion 140 disposed at at least one end of the flexible display panel 100 along the first direction, wherein the extension portion 140 at one end of the flexible display panel 100 along the first direction does not have a display layer, and the flexible display panel 100 has a The thickness of the unextended area is different from that of the extended portion 140 , so that the overall thickness of the flexible display panel 100 along the first direction is inconsistent.
  • the flexible display panel may further include a filling layer 40 .
  • the filling layer 40 when only at least one layer in the upper layer group 20 is extended in the first direction, the filling layer 40 may be located at the extension of the at least one layer in the upper layer group 20 relative to the extension portion of the display layer 10 in the first direction. under. In some embodiments, when the cover layer 21 is only extended along the first direction, the filling layer 40 may be located below the extended portion of the cover layer 21 relative to the display layer 10 along the first direction. In some embodiments, the sum of the thickness of the extended portion of the cover layer 21 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 may be the same as the thickness of the unextended region of the flexible display panel 100 (the upper layer group 20 , the display layer 10.
  • the thickness of the lower layer group 30 is the same or substantially the same.
  • the sum of the thickness of the extended portion of the cover layer 21 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 is substantially the same as the thickness of the unextended area on the flexible display panel 100 , which means that the cover layer 21 There is a certain difference between the sum of the thickness of the extended portion opposite to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 .
  • the difference between the thickness of the extended portion of the cover layer 21 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 is between 0 and 100. within 3mm. In some embodiments, the difference between the thickness of the extended portion of the cover layer 21 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 is between 0 and 100. within 2mm. In some embodiments, the difference between the thickness of the extended portion of the cover layer 21 relative to the display layer along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 is 0 ⁇ 1 mm. within.
  • the filling layer 40 when only at least one layer in the lower layer group 30 is extended in the first direction, the filling layer 40 may be located at the extension of the at least one layer in the lower layer group 30 relative to the extension portion of the display layer 10 in the first direction. above. In some embodiments, when the support layer 31 is only extended in the first direction, the filling layer 40 may be located on the support layer 31 . In some embodiments, the sum of the thickness of the extension of the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 may be the same as the thickness of the unextended area on the flexible display panel 100 (the upper layer group 20 , the display layer 10 , the sum of the thicknesses of the lower layer group 30 ) are substantially the same.
  • the sum of the thickness of the extension portion of the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 is substantially the same as the thickness of the unextended region on the flexible display panel 100 , which means that the support layer 31 is along the first direction. There is a certain difference between the sum of the thickness of the extended portion of the display layer 10 in one direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 . In some embodiments, the difference between the thickness of the extended portion of the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 is 0 ⁇ 3 mm. within.
  • the difference between the thickness of the extended portion of the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 is 0 ⁇ 2 mm. within. In some embodiments, the difference between the thickness of the extension of the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 is 0 ⁇ 1 mm. within.
  • the filling layer 40 may be located on at least one layer in the upper layer group 20 along the first direction.
  • the direction is opposite to between the extended portion of the display layer 10 and the extended portion of at least one layer in the lower layer group 20 opposite to the display layer 10 along the first direction.
  • the filling layer 40 may be located between the extended portions of the cover layer 21 and the support layer 31 relative to the display layer 10 along the first direction between.
  • the thickness of the extended portion of the cover layer 21 and the support layer 31 along the first direction relative to the display layer 10 and the thickness of the filling layer 40 may be the same as the thickness of the unextended area on the flexible display panel 100 (the upper layer 20.
  • the thicknesses of the display layer 10 and the lower layer group 30 are the same or substantially the same.
  • the thickness of the cover layer 21 and the support layer 31 along the first direction relative to the extension of the display layer 10 and the thickness of the filling layer 40 are substantially the same as the thickness of the unextended area on the flexible display panel 100 There is a certain difference between the thickness of the extension of the cover layer 21 and the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 and the thickness of the unextended area on the flexible display panel 100 . In some embodiments, the sum of the thickness of the extended portion of the cover layer 21 and the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 may be between the thickness of the unextended area on the flexible display panel 100 . The difference is within 0-3mm.
  • the sum of the thickness of the extended portion of the cover layer 21 and the support layer 31 relative to the display layer 10 along the first direction and the thickness of the filling layer 40 may be between the thickness of the unextended area on the flexible display panel 100 .
  • the difference is within 0-2mm.
  • the thickness of the extension of the cover layer 21 and the support layer 31 along the first direction relative to the display layer 10 and the thickness of the filling layer 40 may be the difference between the thickness of the unextended area on the flexible display panel The value is within 0 ⁇ 1mm.
  • the filling layer 40 when all layers in the upper layer group 20 and all layers in the lower layer group 30 are extended along the first direction, the filling layer 40 may be located opposite to the upper layer group 20 along the first direction Between the lowermost surface of the extended portion of the display layer 10 and the uppermost surface of the extended portion of the display layer 10 opposite to the lower layer group 30 along the first direction.
  • the thickness of the filling layer 40 may be the same or substantially the same as the thickness of the display layer 10 .
  • the thickness of the filling layer 40 and the thickness of the display layer 10 are substantially the same means that there is a certain difference between the thickness of the filling layer 40 and the thickness of the display layer 10 .
  • the difference between the thickness of the filling layer 40 and the thickness of the display layer 10 is within 0 ⁇ 3 mm. In some embodiments, the difference between the thickness of the filling layer 40 and the thickness of the display layer 10 is within 0 ⁇ 2 mm. In some embodiments, the difference between the thickness of the filling layer 40 and the thickness of the display layer 10 is within 0 ⁇ 1 mm. In some embodiments, since at least one layer in the upper layer group 20 and the corresponding layer in the unextended area of the flexible display panel 100 may be non-integrated molding, at least one layer in the upper layer group 20 corresponds to the unextended area of the flexible display panel 100 The thickness of the layers can vary.
  • the thickness of the filling layer 40 when all layers in the upper layer group 20 and all layers in the lower layer group 30 are extended along the first direction, when at least one layer in the upper layer group 20 and/or the lower layer group 30 is extended along the first direction.
  • the thickness of the filling layer 40 may be greater than the thickness of the display layer 10 .
  • the thickness of the filling layer 40 may be 5 mm greater than the thickness of the display layer 10 .
  • the thickness of the filling layer 40 may be 4 mm greater than the thickness of the display layer 10 .
  • the thickness of the filling layer 40 may be 3 mm greater than the thickness of the display layer 10 .
  • the thickness of the filling layer 40 may be smaller than the thickness of the display layer 10 .
  • the thickness of the fill layer may be 5 mm less than the thickness of the display layer.
  • the thickness of the filling layer may be 4 mm less than the thickness of the display layer.
  • the thickness of the filling layer may be 3 mm less than the thickness of the display layer.
  • the filling layer 40 can not only make the overall thickness of the flexible display panel 100 uniform, but also prevent the end of the display layer 10 (ie, the end of the display layer 10 close to the extension 140 in the first direction) from being in the direction of the predetermined axis 130 Deformation and splitting may occur during bending. Specifically, there is a certain distance between one end of the filling layer 40 (that is, the end of the filling layer 40 that is close to the end of the display layer 10 along the first direction) and the end of the display layer 10 in the first direction.
  • the spacing can provide space for the display layer 10 to deform, and the filling layer 40 can limit the deformation of the end of the display layer 10 to prevent the end of the display layer 10 from being severely deformed and split.
  • the distance between one end of the filling layer 40 and the end of the display layer 10 in the first direction is 0.1 mm ⁇ 1 mm. In some embodiments, the distance between one end of the filling layer 40 and the end of the display layer 10 in the first direction is 0.1 mm ⁇ 2 mm. In some embodiments, the distance between one end of the filling layer 40 and the end of the display layer 10 in the first direction is 0.1 mm ⁇ 3 mm.
  • the material of the filling layer 40 may be a flexible material.
  • the Young's modulus of the flexible material is in the range of 2 Gpa to 6 Gpa. In some embodiments, the Young's modulus of the flexible material is in the range of 2 Gpa to 8 Gpa. In some embodiments, the Young's modulus of the flexible material is in the range of 2 Gpa to 80 Gpa.
  • the material of the filling layer 40 may include at least one of gel, silica gel, foam, and polyimide.
  • the filling layer 40 may include a liquid with a certain viscosity.
  • the liquid in the filling layer 40 will flow with the movement of the flexible display panel, and the flow The resulting displacement can compensate for the deformation of the display layer 10 during the movement, so as to avoid the situation that the display effect of the flexible display panel 100 is poor due to the deformation of the display layer 10 .
  • the viscosity of the liquid in the filling layer 40 is in the range of 0.1-100 Pa ⁇ s. In some embodiments, the viscosity of the liquid in the filling layer 40 is in the range of 0.5-80 Pa ⁇ s. In some embodiments, the viscosity of the liquid in the filling layer 40 is in the range of 1-50 Pa ⁇ s.
  • the material of the filling layer 40 may include one or more of liquid silicone, liquid resin, liquid PVC, and the like.
  • the curved portion 120 of the flexible display panel 100 can no longer be bent around the rotating shaft 200, but is located on the front of the flexible display panel 100, so that the curved portion 120 can be presented in the user's field of vision, and the display area 101 on the curved portion 120 serves as the The extended display area and the main display area on the non-curved portion 110 jointly present an image to the user.
  • the non-display layer portion (ie, the extension portion 140 ) disposed at one end of the flexible display panel 100 along the first direction needs to be bent around the rotation axis 200 .
  • the filling layer 40 needs to be bent synchronously with the extension portion 140 around the rotation axis 200 .
  • the filling layer may have less stiffness in the first direction.
  • the stiffness value of the filling layer 40 in the first direction ranges from 2 Gpa to 10 Gpa.
  • the stiffness value of the filling layer 40 in the first direction ranges from 2 Gpa to 12 Gpa.
  • the stiffness value of the filling layer 40 in the first direction ranges from 2 Gpa to 80 Gpa.
  • the lengths of the filling layer 40 and the extension 140 in the first direction are substantially the same.
  • the length difference between the filling layer 40 and the extension portion 140 in the first direction may range from 2 Gpa to 10 Gpa.
  • the length difference between the filling layer 40 and the extension portion 140 in the first direction may range from 2 Gpa to 12 Gpa.
  • the length difference between the filling layer 40 and the extension portion 140 in the first direction may range from 2 Gpa to 80 Gpa.
  • the filling layer 40 may include a first region 41 and a second region 42 in the first direction on the backside of the curved portion 110 , wherein the first region 41 is closer to the display layer 10 than the second region 42 .
  • the first region 41 may be bent around the rotation axis, while the second region 42 is located on the back of the non-bending portion 110 and does not bend around the rotation axis 200 .
  • the filling layer 40 may have different filling materials in the first region 41 and the second region 42 , so that the stiffness of the filling layer 40 in the first region 41 is smaller than that of the second region 42 .
  • the stiffness difference between the first region 41 and the second region 42 of the filling layer 40 is within the range of -7Gpa ⁇ 4Gpa.
  • the stiffness difference between the first region 41 and the second region 42 of the filling layer 40 is within the range of -7Gpa ⁇ 6Gpa.
  • the stiffness difference between the first region 41 and the second region 42 of the filling layer 40 is within the range of -7Gpa ⁇ 74Gpa.
  • the filling material of the filling layer 40 in the first region 41 may include at least one of PI, PET, PEN ⁇ PMMA ⁇ PC ⁇ glass, steel sheet, alloy, and carbon fiber.
  • the filling material of the filling layer 40 in the second region 42 may include at least one of gel, silica gel, foam and polyimide.
  • the unextended area (the bending portion 120 ) of the flexible display panel 100 may be bent around the rotating shaft 200 .
  • the unextended area of the flexible display panel 100 can be bent by 180° around the rotating shaft 200, and the end of the display layer 10 (the end close to the extension part 140) is located at the lowest position A of the rotating shaft 200, at this time the flexible display
  • the extension 140 at one end of the panel 100 does not need to be bent around the rotation axis 200 , so the filling layer 40 does not need to be bent, and the filling layer 40 may have greater rigidity in the first direction.
  • the stiffness value of the filling layer in the first direction may range from 2 Gpa to 10 Gpa. In some embodiments, the stiffness value of the filling layer in the first direction may range from 2 Gpa to 12 Gpa. In some embodiments, the stiffness value of the filling layer in the first direction may range from 2 Gpa to 80 Gpa.
  • the material of the filling layer 40 may include at least one of PI, PET, PEN ⁇ PMMA ⁇ PC ⁇ glass, steel sheet, alloy, and carbon fiber.
  • the flexible display panel may further include a flexible circuit board (not shown in the figure), wherein the flexible circuit board may be used to connect the flexible display panel 100 with the terminal device.
  • the main board is connected to a circuit and transmits a control signal to the display layer 10 of the flexible display panel 100 , and the display layer 10 can perform corresponding image display based on the control signal.
  • the flexible circuit board may be connected to the upper layer group 20 .
  • the flexible circuit board can be connected to the touch layer 22, and the touch signal generated by the touch layer 22 can be transmitted to the mainboard circuit of the terminal device through the flexible circuit board, so as to realize the touch operation corresponding to the touch signal.
  • the flexible circuit board may be connected to an extended end of the upper layer group 20, or connected to an extended end of the upper layer group away from the extended end thereof. In some embodiments, the flexible circuit board may be connected with the display layer 10 . In some embodiments, the flexible circuit board may be connected with the display driving layer 12 . In some embodiments, the flexible circuit board may be connected with a pixel driving circuit (eg, a TFT device) in the display driving layer 12, the display driving layer 12 may generate an image signal based on the control signal, and drive the OLED light-emitting layer 11 based on the image signal to perform Light is emitted, thereby realizing image display of the display layer 10 .
  • a pixel driving circuit eg, a TFT device
  • the flexible circuit board may be connected to the extended end of the display layer 10 close to the upper layer group 20 and/or the lower layer group 30 . In some embodiments, the flexible circuit board may be connected to the unextended end of the display layer 10 away from the upper layer group 20 and/or the lower layer group 30 . It can be understood that, the extended end of the display layer 10 away from or close to the upper layer group and/or the lower layer group may be the extension of the display layer 10 away from or close to the upper layer group 20 and/or the lower layer group 30 relative to the display layer 10 along the first direction. one end. In some embodiments, the flexible circuit board may also be connected to an extended end or an unextended end of the lower layer group 20.
  • the flexible circuit board may include integrated circuits, capacitors, resistors, diodes, the like, or combinations thereof.
  • the connection manner of the flexible circuit board and the flexible display panel may include, but is not limited to, welding, gluing, plugging, and the like.
  • the flexible circuit board can be welded with the pins of the flexible display panel; for another example, the flexible circuit board has pin headers, the flexible display panel is provided with header headers corresponding to the header pins, or the flexible circuit board has header headers , the flexible display panel is provided with pin headers corresponding to the female headers, and the connection between the flexible circuit board and the flexible display panel can be achieved by inserting the pin headers into the female headers.
  • the flexible circuit board may include a single-sided flexible board, a double-sided flexible board, a multi-layer flexible board, a High Density Interconnection (HDI) rigid-flex board, and the like.
  • HDI High Density Interconnection
  • the flexible circuit board may also be used to connect with a power interface and/or a signal interface on the flexible display panel 100 .
  • the flexible display panel 100 may further include a power interface (not shown in the figure).
  • the power interface may be used to connect a power source that provides power required for operation of the flexible display panel 100 .
  • the flexible display panel 100 may not have a power interface, but provide power to the flexible display panel 100 through a built-in battery.
  • the flexible display panel 100 may further include a signal interface (not shown in the figure).
  • the signal interface may be used to connect the flexible display panel with the signal source.
  • the signal source may be any type of terminal device capable of outputting image data, including but not limited to mobile phones, tablet computers, personal computers, televisions, game consoles, and the like.
  • the signal interface may be a wired interface.
  • the wired interface may include, but is not limited to, an Interactive Digital Visual Interface (DVI) interface, a High Definition Multimedia Interface (HDMI) interface, an analog interface (D-subminiature, D- sub), Video Graphics Array (VGA) interface, Data Processing (DP) interface, Universal Serial Bus (Universal Serial Bus, USB) interface, etc.
  • DVI Interactive Digital Visual Interface
  • HDMI High Definition Multimedia Interface
  • VGA Video Graphics Array
  • DP Data Processing
  • USB Universal Serial Bus
  • the signal interface may also be a wireless interface.
  • the wireless interface may be any type of wireless network interface, including but not limited to a local area network (LAN) interface, a wide area network (WAN) interface, a wireless local area network (Wireless Local Area) interface Network, WLAN) interface, Metropolitan Area Network (MAN) interface, Bluetooth network interface, ZigBee (ZigBee) wireless network interface, Near-field Communication (Near-field Communication, NFC) network interface, etc.
  • LAN local area network
  • WAN wide area network
  • WLAN wireless local area network
  • MAN Metropolitan Area Network
  • Bluetooth network interface ZigBee (ZigBee) wireless network interface
  • ZigBee ZigBee
  • NFC Near-field Communication
  • the power interface and the signal interface can also be implemented in one piece, that is, the flexible display panel 100 can provide an interface, which can provide a power connection for the flexible display panel 100 while connecting the flexible display panel 100 with the signal source.
  • the flexible display panel 100 may also have no power interface and signal interface, which will not affect the display performance and support performance of the flexible display panel 100 .
  • the end of the flexible display panel 100 provided with the extension part 140 may be used for connection with a terminal device.
  • the end of the flexible display panel 100 provided with the extension portion 140 may be provided with a power interface and/or a signal interface, and the end of the flexible display panel 100 provided with the extension portion 140 may be connected to the terminal device through the power interface and/or the signal interface, This enables the terminal device to provide the flexible display panel 100 with power required for its operation and/or control signals for image display through the power interface and/or the signal interface.
  • the end of the flexible display panel 100 provided with the extension portion 140 may be the extension end of the flexible display panel 100 along the first direction (also referred to as the extension end of the flexible display panel 100 ).
  • the extended end of the direction may be an end of the extended portion of at least one layer in the upper layer group 20 and/or the lower layer group 30 in the flexible display panel 100 opposite to the display layer 10 along the first direction.
  • the extension part 140 may include an extension part of at least one of the upper layer group 20 and/or the lower layer group 30 relative to the display layer 10 along the first direction, at least one of the upper layer group 20 and/or the lower layer group 30
  • the extension of the layer relative to the display layer 10 along the first direction may be provided only at one end of the flexible display panel 100 along the first direction, that is, only one of the two ends of the flexible display panel along the first direction is the extension of the flexible display panel. .
  • the extension of at least one layer in the upper layer group 20 and/or the lower layer group 30 along the first direction relative to the display layer 10 may be disposed at both ends of the flexible display panel 100 along the first direction, that is, the flexible display panel Both ends of the flexible display panel 100 along the first direction are extended ends of the flexible display panel 100 .
  • the extension part 140 may include an extension part of at least one of the upper layer group 20 and/or the lower layer group 30 relative to the display layer 10 along the second direction, at least one of the upper layer group 20 and/or the lower layer group 30
  • the extension of the layer relative to the display layer 10 along the second direction may only be disposed at one end of the flexible display panel 100 along the second direction, that is, only one end of the two ends of the flexible display panel 100 along the second direction is the end of the flexible display panel 100 . extension end.
  • the extension of at least one layer of the upper layer group 20 and/or the lower layer group 30 along the second direction relative to the display layer 10 may be disposed at both ends of the flexible display panel along the second direction, that is, the flexible display panel 100 Both ends along the second direction are extension ends of the flexible display panel 100 .
  • the extension end of the flexible display panel may include the extension part 140 .
  • the extension part 140 is disposed at at least one end of the flexible display panel 100 along the first direction.
  • the extension end (the extension part 140 ) of the flexible display panel 100 can be used to connect with the motion mechanism of the terminal device, so as to realize the sliding movement of the flexible display panel 100 .
  • the motion mechanism can drive the extended end of the flexible display panel 100 to move relative to the terminal device in the first direction, so that the curved portion 120 of the flexible display panel 100 can move through the rotating shaft 200 in the first direction to the back of the non-curved portion 110 ( Also known as the storage area) or withdraw from the storage area, and the non-bending portion 110 of the flexible display panel 100 can also move in the opposite direction to the moving direction of the bending portion 120 under the driving of the bending portion 120.
  • the bending part 120 withdrawn from the storage area can move to the front of the flexible display panel 100, and part or all of the display area 101 on the bending part 120 can be used as an extended display area and
  • the main display areas on the non-curved portion 110 jointly present images to the user.
  • the flexible display panel 100 is folded, part or all of the curved portion 120 can enter the storage area, and the curved portion 120 located in the storage area is not observed by the user.
  • the display area 101 located on the curved portion 120 in the storage area may not display images (for example, in an off-screen state), so that the flexible display panel 100 can be folded or unfolded.
  • the end of the display layer 10 can move to the uppermost position B of the rotating shaft.
  • the bending portion 120 of the flexible display panel 100 can all move to The front of the flexible display panel 100 is used for image display.
  • the extension part 140 is bent around the rotation axis 200
  • the extension part 140 is bent at an angle of 180°
  • the filling layer 40 corresponding to the extension part 140 is also bent around the rotation axis 200 . , so the filling layer 40 corresponding to the extension portion 140 needs less rigidity.
  • the end of the display layer 10 can move to the position C between the position A and the position B of the rotating shaft 200 , and at this time, part of the curved part is rolled up
  • the display area 101 on the curved part 120 wound on the rotating shaft 200 cannot be observed by the user; the display area 101 on the curved part 120 wound on the rotating shaft 200 cannot be seen by the user.
  • the filling layer 40 may only include the first region 41 , that is, when the filling layer 40 is bent around the rotating shaft 200 , the end of the filling layer 40 (ie the end of the filling layer 40 away from the display layer 10 ) is located at the end of the rotating shaft 200 .
  • the lowest position A is, when the filling layer 40 is bent around the rotating shaft 200 , the end of the filling layer 40 (ie the end of the filling layer 40 away from the display layer 10 ) is located at the end of the rotating shaft 200 . The lowest position A.
  • the rotating shaft 200 can facilitate the bending part 120 of the flexible display panel 100 to be bent around the rotating shaft 200, and when the bending part 120 is withdrawn from the storage area to move to the front of the flexible display panel 100, the bending part 120 can be observed by the user At this point, the display area 101 on the curved portion 120 can display images, and the rotating shaft 200 can also support the curved portion 120 located on the front of the flexible display panel 100, so as to ensure that the display area on the curved portion 120 has a relatively flat image when displaying images. display surface.
  • the motion mechanism may be a linear motion mechanism.
  • the linear motion mechanism may include a lead screw nut mechanism, a crank slider mechanism, a cam mechanism, a rack and pinion mechanism, a belt drive mechanism, a chain drive mechanism, a linear guide mechanism, etc., or any combination thereof.
  • the motion mechanism can be driven by means of motor drive, cylinder drive, hydraulic drive, etc., so that the movement of the motion mechanism can be precisely controlled, so that the extension end of the flexible display panel 100 can be accurately controlled to drive the motion mechanism The distance to move in the first direction.
  • connection between the extension end of the flexible display panel 100 and the motion mechanism may be a fixed connection or a detachable connection.
  • the means of fixed connection may include, but are not limited to, integral molding, gluing, pinning, and the like.
  • the way of detachable connection may include, but is not limited to, snaps, plug links, and the like.
  • the connection strength between the extension end of the flexible display panel 100 and the motion mechanism may affect the extension length of the upper layer group 20 and/or the lower layer group 30 in the flexible display panel 100 relative to the display layer 10 along the first direction.
  • the motion mechanism may only be connected to the extension end of the flexible display panel 100 to drive the curved portion 120 of the flexible display panel 100 to move along the first direction through the rotating shaft 200 , and the non-curved portion 110 may be at the edge of the curved portion 120 . It is driven to move in the opposite direction of the first direction.
  • the first rack 51 can be driven to move in the first direction, and the first rack 51 can drive the extension end of the flexible display panel 100 to move in the first direction, so that the curved portion 120 of the flexible display panel 100 can move in the first direction.
  • the movement of the first rack 51 can be transmitted to the second rack 53 through the gear 52, so that the second rack 53 can move along the same direction as the first rack 53.
  • a rack 51 moves in a direction opposite to the moving direction, so that the non-bending portion 110 of the flexible display panel 100 can move in a direction opposite to the first direction.
  • the gear 52 can be driven to rotate clockwise or counterclockwise, and when the gear 52 rotates, the first rack 51 and the second rack 53 can move with each other in the first direction at the same time.
  • the curved portion 120 may enter or exit from the receiving area through the rotating shaft 200 in the first direction under the driving of the first rack 51 , and the non-curving portion 110 may be in the second rack 53 .
  • the lower part is driven to move in the opposite direction to the moving direction of the first rack 51 .
  • the second rack 53 can be driven to move in the first direction, so that the second rack 53 can drive the non-bending portion 110 of the flexible display panel 100 to move in the first direction, and the second rack 53 can move in the first direction.
  • the movement can be transmitted to the first rack 51 through the gear 52 , so that the first rack 51 can move in the opposite direction to the movement direction of the second rack 53 , thereby driving the bending portion 120 in the opposite direction of the movement of the second rack 53 .
  • the direction of the movement through the rotating shaft 200 enters into the storage area or exits from the storage area.
  • the motion mechanism may also use a synchronous belt drive mechanism.
  • the timing belt transmission mechanism may include a transmission belt and two pulleys 61 of the same size. The extension end of the flexible display panel 100 can be connected with the lower part 63 of the transmission belt, and the lower surface of the non-curved part 110 of the flexible display panel 100 can be connected with the upper part 62 of the transmission belt.
  • the upper part 62 of the transmission belt can drive the The curved portion 110 moves in the first direction, and the lower portion 63 of the transmission belt can drive the curved portion 120 of the flexible display panel 100 to move through the rotating shaft 200 in the opposite direction to the movement direction of the non-curved portion into the storage area or exit from the storage area.
  • the extension portion 140 of the flexible display panel 100 when the extension portion 140 of the flexible display panel 100 is only disposed at one end of the flexible display panel 100 along the first direction, that is, the extension end of the flexible display panel 100 is only one end of the flexible display panel 100 along the first direction.
  • one end (extended end) of the flexible display panel 100 moves in the first direction through the rotating shaft 200 and enters the storage area. Or withdraw from the storage area, so as to realize the retraction or deployment of the flexible display panel 100 .
  • the end of the flexible wire display device 100 that is not the extension end may be connected to the housing of the terminal device.
  • the end of the flexible wire display device 100 that is not the extension end may be connected to the flexible circuit board.
  • the extension parts 140 may be disposed at both ends of the flexible display panel 100 along the first direction, that is, both ends of the flexible display panel 100 along the first direction are extensions of the flexible display panel 100
  • the moving mechanism connected to the extension end of the flexible display panel 100 may include two moving mechanisms.
  • the flexible display panel 100 may include two bending parts 120 and two corresponding rotating shafts 200, and the two moving mechanisms can respectively drive Both ends of the flexible display panel 100 (both ends are extended ends) move along the first direction, so that the two curved parts 120 of the flexible display panel 100 can move into the storage area or withdraw from the storage area, wherein the corresponding two rotating shafts 200 move a corresponding distance parallel to the first direction.
  • the corresponding two The flexible display panel 100 can be folded or unfolded when the curved portion 120 and the two rotating shafts 200 approach or move away from each other along the first direction (or its parallel direction). In this case, the flexible display panel 100 may occupy a small space when folded.
  • both ends of the flexible display panel 100 along the first direction are extended ends of the flexible display panel 100
  • one of the extended ends of the flexible display panel 100 may be connected with the motion mechanism of the terminal device, while the other Then it is not necessary to connect with the kinematics.
  • the end of the flexible display panel 100 that is not connected to the motion mechanism may be connected to the housing of the terminal device.
  • the end of the flexible display panel 100 that is not connected to the motion mechanism may be connected to a flexible circuit board.
  • the rotating shaft 200 can not only realize that the bending part 120 of the flexible display panel 100 is bent around the rotating shaft, but also can wind the bending part 120 thereon to retract the flexible display panel 100, and when the bending part 120 is wound around the rotating shaft 200 When the rotating shaft 200 is unfolded, and part or all of the bending part 120 is located on the front of the flexible display panel 100 , the rotating shaft 200 can also support the bending part 120 located on the front of the flexible display panel 100 to ensure the bending on the front of the flexible display panel 100
  • the display area 101 on the portion 120 has a relatively flat display surface.
  • the flexible display panel 100 may include only the bending portion 120 .
  • the flexible display panel may include a curved part 120 and a non-curved part 110 .
  • the flexible display panel 100 may include a driving device for driving the rotating shaft 200 to rotate.
  • the drive mechanism may include, but is not limited to, a spring drive mechanism, a motor drive mechanism, a ratchet drive mechanism, a gear drive mechanism, and the like.
  • connection between the extension end of the flexible display panel 100 and the rotating shaft 200 may be a fixed connection or a detachable connection.
  • the means of fixed connection may include, but are not limited to, integral molding, gluing, pinning, and the like.
  • the way of detachable connection may include, but is not limited to, snaps, plug links, and the like.
  • the flexible display panel 100 when the extended portion 140 of the flexible display panel 100 is only disposed at one end of the flexible display panel along the first direction, that is, the extended end of the flexible display panel 100 is only one end of the flexible display panel 100 along the first direction At the time, the flexible display panel can be connected with only one rotating shaft, and the flexible display panel can be in the form of single-axis rolling. In some embodiments, as shown in FIG.
  • the end of the flexible display panel 100 provided with the extension 140 is connected to the rotating shaft 200 , and the rotation of the rotating shaft 200 around its axis can drive the end of the flexible display panel with the extension 140 to start around the rotating shaft 200 Bending is performed so that the bending portion 120 of the flexible display panel can be gradually wound on the rotating shaft 200 to realize the retraction of the flexible display panel 100.
  • the end of the flexible display panel 100 not provided with the extension portion 140 may be connected to the housing of the terminal device.
  • the end of the flexible display panel 100 not provided with the extension portion 140 may be connected to the flexible circuit board.
  • the flexible display panel 100 When the extension portion 140 of the flexible display panel 100 is disposed at both ends of the flexible display panel 100 along the first direction, that is, when both ends of the flexible display panel 100 along the first direction are the extension ends of the flexible display panel 100, the flexible display panel 100 may be in the form of a biaxial crimp.
  • the flexible display panel 100 may include a first rotating shaft 210 and a second rotating shaft 220 , and both ends of the flexible display panel 100 provided with the extension 140 may be respectively connected with the first rotating shaft 210 and the second rotating shaft 220 connections.
  • the axes of the first rotating shaft 210 and the second rotating shaft 220 are both substantially perpendicular to the first direction or substantially parallel to the second direction, and the first rotating shaft 210 and the second rotating shaft 220 respectively correspond to the first curved portion 121 and the second curved portion 122.
  • the first rotating shaft 210 and the second rotating shaft 220 can be rotated.
  • the rotation directions of the first rotating shaft 210 and the second rotating shaft 220 are opposite, and the first bending portion 121 and/or Or the second bending part 122 can be bent around the first rotating shaft under the driving of the first rotating shaft 210 and gradually wound on the first rotating shaft 210, the second bending part 122 and/or the first bending part 121 can be on the second rotating shaft Driven by 210 , it is bent around the second rotating shaft 220 and gradually wound on the second rotating shaft 210 , and during the process of retracting the flexible display panel 100 , the first rotating shaft 210 and the second rotating shaft 220 can move in the first direction and Close to each other, when the flexible display panel is completely retracted, the distance between the first rotating shaft 210 and the second rotating shaft 220 along the first direction is the smallest, and the shape of the flexible display panel 100 may be an "8" shape.
  • the rotation directions of the first rotating shaft 210 and the second rotating shaft 220 may be the same.
  • the distance between the first rotating shaft 210 and the second rotating shaft 220 along the first direction is the smallest, and the flexible display
  • the shape of the panel 100 is a "binoculars" shape as shown in FIG. 16 .
  • the first rotating shaft 210 and the second rotating shaft 220 are rotated, wherein the rotation directions of the first rotating shaft 210 and the second rotating shaft 220 can be the same or opposite, so that the first bending part 121 and the second curved portion 122 can be unfolded around the first rotating shaft 210 and the second rotating shaft 220 under the driving of the first rotating shaft 210 and the second rotating shaft 220 respectively, and some or all of the first curved portion 121 and the second curved portion 122 can be Perform image display, wherein the first rotating shaft 210 and the second rotating shaft 210 can jointly support part or all of the image display of the first bending part 121 and the second bending part 122 , so that the first bending part 121 and the second bending part 121 and the second bending part 122 are supported.
  • Part or all of the display area 101 in which the part 122 performs image display has a relatively flat display surface, so as to ensure that the display effect of the flexible display panel 100 will not
  • the flexible display panel 100 may also not have the rotating shaft 200, and the rolling motion of the flexible display panel 100 may be realized by manual assistance.
  • the user may directly roll up the flexible display panel 100 to make the flexible display panel roll itself. Get up and no longer wind up on the reels.
  • the flexible display panel 100 may be rolled up from either end to the other end, or may be rolled up from both ends to the middle.
  • any end of the flexible display panel 100 along the first direction may no longer be provided with the extension 140, and it can also be used at the maximum
  • the display area of the flexible display panel 100 is utilized to a certain extent.
  • the present application further provides a display device 1000 having a flexible display panel
  • the display device 1000 may include a terminal device, and a flexible display panel connected to the terminal device.
  • the flexible display panel may be any one of the flexible display panels 100 in one or more of the above embodiments of this specification.
  • the flexible display panel 100 may be fixedly connected to the terminal device, and the terminal device provides power to the flexible display panel and outputs display signals.
  • the flexible display panel 100 may also be detachably connected to the terminal device.
  • the flexible display panel 100 can be connected to the terminal device for image display; when the display device 1000 does not need to display images, the flexible display panel 100 can be connected to the terminal device Separated to accommodate the flexible display panel 100 .
  • the detachable connection between the flexible display panel 100 and the terminal device may include a pluggable wired connection.
  • the connection between the flexible display panel 100 and the terminal device may further include wireless connection, which avoids the trouble caused by the connection line between the flexible display panel 100 and the terminal device.
  • the terminal device may also be directly integrated in the flexible display panel 100 .
  • the terminal equipment includes but is not limited to mobile phones, computers, televisions, keyboards, e-books, and vehicle-mounted display terminals.
  • the flexible display panel 100 may be connected with a motion mechanism of the terminal device, and the motion mechanism may drive the flexible display panel 100 to perform sliding movement relative to the terminal device.
  • the display device 1000 may include a rotating shaft 200, the flexible display panel 100 may be connected with the rotating shaft 200, and the rotation of the rotating shaft 200 may drive the flexible display panel 100 to perform a rolling motion on the terminal device. More descriptions of the rolling and sliding motions of flexible display panels can be found elsewhere in this application (eg, FIGS. 10 , 11 and 14 , 15 and related descriptions).
  • the flexible display panel has lower stiffness in the bending direction, which facilitates the bending of the flexible display panel;
  • the flexible display panel At least one end of the panel along the bending direction (the first direction or the second direction) is provided with an extension part to be connected with the rotating shaft or the motion mechanism, so that when the flexible display panel is fully unfolded, the display layer of the flexible display panel can display the area to the full or maximum extent It is located on the front of the flexible display panel, so that the display area of the flexible display panel can be presented to the user to the greatest extent, so as to utilize the display area of the flexible display panel to the greatest extent; (3) the flexible display panel has a larger size in the non-bending direction (4)
  • the buffer layer makes up for the thickness of the extension, so that the overall thickness of the flexible display panel is consistent, and The buffer layer can also prevent the end of the display layer from splitting when the flexible display panel is moving,

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Abstract

一种柔性显示面板（100）以及显示设备，柔性显示面板（100）包括显示层（10）和层组；层组包括至少一层；层组（10）中至少一层沿第一方向的长度大于显示层沿（10）第一方向的长度。层组包括位于显示层（10）上面的上层组（20）和位于显示层（10）下面的下层组（30）；上层组（20）包括至少一层；下层组（30）包括至少一层；上层组（20）和/或下层组（30）中的至少一层沿第一方向的长度大于显示层（10）沿第一方向的长度。

Description

一种柔性显示面板以及显示设备 技术领域
本申请涉及显示面板技术领域，特别涉及一种柔性显示面板以及显示设备。
背景技术
随着显示技术的发展，具有柔性显示面板的柔性显示设备逐渐进入市场，并愈发受到业内重视。柔性显示设备的柔性显示面板可以在需要显示时展开，在不需要显示时收起。柔性显示面板的收起或展开可以通过滑移或卷曲来实现，但由于柔性显示面板需要与帮助其实现滑移或卷曲的装置连接，可能导致柔性显示面板在完全展开时显示区域其显示区域的部分无法被用户观察到而使得柔性显示面板无法得到充分利用。
因此，需要一种能够最大程度地利用柔性显示面板的显示区域的方法和机制。
发明内容
本申请实施例之一提供一种柔性显示面板，所述柔性显示面板包括显示层和层组；所述层组包括至少一层；所述层组中至少一层沿第一方向的长度大于所述显示层沿第一方向的长度。
在一些实施例中，所述层组包括位于所述显示层上面的上层组和位于所述显示层下面的下层组；所述上层组包括至少一层；所述下层组包括至少一层；所述上层组和/或下层组中的至少一层沿第一方向的长度大于所述显示层沿第一方向的长度。
在一些实施例中，所述层组仅包括位于所述显示层下面的下层组；所述下层组包括至少一层；所述下层组中的至少一层沿第一方向的长度大于所述显示层沿第一方向的长度。
在一些实施例中，所述上层组包括盖板层，所述盖板层沿所述第一方向的长度大于所述显示层的长度。
在一些实施例中，所述下层组包括支撑层，所述支撑层沿所述第一方向的长度大于所述显示层的长度。
在一些实施例中，所述柔性显示面板还包括填充层，所述填充层位于所述盖板层相对所述显示层的延长部的下面，和/或位于所述支撑层相对所述显示层的延长部的上面。
在一些实施例中，所述盖板层的延长部和/或所述支撑层的延长部与所述填充层的厚度之和与所述柔性显示面板上未延长区域的厚度相同。
在一些实施例中，所述上层组和/或所述下层组中的至少一层沿第一方向与所述显示层的长度差值的范围包括0.5cm～5cm。
在一些实施例中，所述上层组和/或所述下层组中的至少一层沿第一方向与所述显示层的长度差值的范围包括1cm～4cm。
在一些实施例中，所述上层组和/或所述下层组中的若干层沿第一方向相对所述显示层的延伸的长度相同。
在一些实施例中，所述上层组和/或所述下层组相对所述显示层的延长部设置在所述显示层沿第一方向的其中一端。
在一些实施例中，所述上层组和/或所述下层组相对所述显示层的延长部设置在所述显示层沿第一方向的两端。
在一些实施例中，所述柔性显示面板还包括柔性电路板，所述柔性电路板连接于所述显示层上远离被所述上层组和/或所述下层组延长的一端。
在一些实施例中，所述柔性显示面板沿第一方向的延长端用于与终端设备连接。
在一些实施例中，所述柔性显示面板沿第一方向的延长端用于与转轴连接。
本申请实施例之一提供一种显示设备，其包括上述柔性显示面板，以及与所述柔性显示面板连接的终端设备。
在一些实施例中，所述柔性显示面板相对所述终端设备进行滑移运动。
在一些实施例中，所述柔性显示面板在所述终端设备上围绕转轴作卷曲运动。
附图说明
本申请将以示例性实施例的方式进一步说明，这些示例性实施例将通过附图进行详细描述。这些实施例并非限制性的，在这些实施例中，相同的编号表示相同的结构，其中：
图1是根据本申请的一些实施例所示的将上层组和下层组中至少一层沿第一方向分别进行延长的柔性显示面板的部分结构示意图；
图2是根据本申请的一些实施例所示的上层组和下层组中至少一层沿第一方向分别进行延长的柔性显示面板的部分结构示意图之二；
图3是根据本申请的一些实施例所示的显示层的部分结构示意图；
图4是根据本申请的一些实施例所示的上层组的部分结构示意图；
图5是根据本申请的一些实施例所示的下层组的部分结构示意图；
图6是根据本申请的一些实施例所示的上层组和下层组中至少一层沿第一方向分别进行延长的柔性显示面板的部分结构示意图之三；
图7是根据本申请的一些实施例所示的仅将上层组中至少一层沿第一方向进行延长的柔性显示面板的部分结构示意图；
图8是根据本申请的一些实施例所示的仅将下层组中至少一层沿第一方向进行延长的柔性显示面板的部分结构示意图；
图9是根据本申请的一些实施例所示的上上层组和下层组中至少一层沿第一方向分别进行延长的柔性显示面板的部分结构示意图之四；
图10是根据本申请的一些实施例所示的上层组和下层组中至少一层沿第一方向分别进行延长的柔性显示面板的部分结构示意图之五；
图11是根据本申请的一些实施例所示的与运动机构连接的柔性显示面板的部分结构示意图之一；
图12是根据本申请的一些实施例所示的与运动机构连接的柔性显示面板的部分结构示意图之二；
图13是根据本申请的一些实施例所示的沿第一方向的两端均设置有延长部的柔性显示面板的结构示意图；
图14是根据本申请的一些实施例所示的单轴卷曲形式的柔性显示面板的结构示意图；
图15是根据本申请的一些实施例所示的双轴卷曲形式的柔性显示面板的结构示意图；
图16是根据本申请的一些实施例所示的双轴卷曲形式的柔性显示面板收起时的结构示意图。
具体实施方式
这里将详细地对示例性实施例或实施方式进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。 在本申请和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本申请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。同样，“一个”或者“一”等类似词语也不表示数量限制，而是表示存在至少一个。除非另行指出，“前部”、“后部”、“下部”和/或“上部”等类似词语只是为了便于说明，而并非限于一个位置或者一种空间定向。“包括”或者“包含”等类似词语意指出现在“包括”或者“包含”前面的元件或者物件涵盖出现在“包括”或者“包含”后面列举的元件或者物件及其等同，并不排除其他元件或者物件。
本申请一个或多个实施例的柔性显示面板可以应用于不同的电子产品的显示设备。不同的电子产品可以包括但不限于手机、个人电脑、键盘、显示器、电视机、车载显示终端、电子书等各种终端设备。
本申请一些实施例的柔性显示面板具有显示区域，该显示区域可以显示内容(例如，图像)以供用户观看。柔性显示面板包括非弯曲部和弯曲部，显示区域位于非弯曲部和弯曲部上。在柔性显示面板的弯曲部被弯折、弯曲而改变形态时，用户可以观察到的显示区域的面积也会随之变化。在一些实施例中，柔性显示面板可以作为滑移屏手机的显示屏，柔性显示面板的弯曲部通过转轴弯曲后收纳于显示区域背面或直接卷绕在转轴上，用户可以根据自身需求来选择将柔性显示面板的弯曲部收纳至显示区域背面或直接卷绕在转轴上，来降低柔性显示面板露出显示区域的面积，以使得柔性显示面板更便携；用户还可以选择将柔性显示面板的弯曲部从显示区域背后拉出，来增大柔性显示面板露出显示区域的面积，以显示更多内容。
在一些实施例中，如图1所示，柔性显示面板100可以包括非弯曲部110和弯曲部120，显示区域101位于非弯曲部110和弯曲部120的正面，弯曲部120可以通过绕预定轴线130弯曲后，收纳于非弯曲部110的背面，其中，柔性显示面板100用于显示的表面可以理解为正面，与其相背的表面可以理解为背面。在一些实施例中，弯曲部120的部分或全部可以绕预定轴线130进行弯曲。在一些实施例中，弯曲部120绕预定轴线130的弯曲角度可以是大于120°。在一些实施例中，弯曲部120绕预定轴线130的弯曲角度可以是大于150°。在一些实施例中，弯曲部120绕预定轴线130的弯曲角度可以是大于170°。在一些实施例中，弯曲部120绕预定轴线130的弯曲角度可以是接近180°(在±5°以内)；在一些实施例中，弯曲部120绕预定轴线130的弯曲角 度可以是远大于180°，即可以卷绕在转轴200上，例如，当弯曲部120在转轴200上卷绕一圈、两圈、三圈……时，弯曲部120绕预定轴线130弯曲的角度为360°、720°、1080°……，其中，本实施例中的预定轴线130可以为转轴200的轴线。在一些实施例中，弯曲部120绕预定轴线的弯曲角度可以是指弯曲部120中绕预定轴线130弯曲的部分对应的圆心角的角度。
在一些实施例中，非弯曲部110和弯曲部120均可以用于显示图像。在一些实施例中，为了使柔性显示面板100的弯曲部120可以沿第一方向进行弯曲，并且使得柔性显示面板100在完全展开时具有足够的刚度能够维持弯曲部120进行图像显示时的显示面平坦，而不会影响柔性显示面板的显示效果，柔性显示面板100在不同方向上具有不同的刚度需求。
在一些实施例中，弯曲部120在第一方向的刚度可以小于其在第二方向的刚度。如图1，本申请中的第一方向是指柔性显示面板与预定轴线130垂直或基本垂直的方向；柔性显示面板与预定轴线平行或基本平行的方向为第二方向。在一些实施例中，第一方向可以柔性显示面板100的卷曲方向或滑移方向。在一些实施例中，柔性显示面板的卷曲方向是指柔性显示面板100开始卷曲的一端相对另一端移动的方向。在一些实施例中，柔性显示面板的滑移方向为柔性显示面板进行展开或收起时其一端移动的方向。本申请中的基本垂直或基本平行是指，在相对于垂直或平行的方向上，可以允许存在少量误差，该误差可以在±5°以内。在一些实施例中，该误差可以是±4°之间。在一些实施例中，该误差可以在±3°之间。在一些实施例中，该误差可以在±1°之间。例如，第一方向与预定轴线130的垂直线之间的角度可以在5°以内，第二方向与预定轴线130的平行线之间的角度可以在5°以内。
在一些实施例中，弯曲部120在第一方向的刚度在0.01GPa～100GPa之间；在一些实施例中，弯曲部120在第一方向的刚度在0.01GPa～50GPa之间；在一些实施例中，弯曲部120在第一方向的刚度在0.01GPa～20Gpa之间；在一些实施例中，弯曲部120在第一方向的刚度在0.01GPa～10GPa之间；在一些实施例中，弯曲部120在第一方向的刚度在0.01GPa～5GPa之间；在一些实施例中，弯曲部120在第一方向的刚度在0.01GPa～1GPa之间。在一些实施例中，弯曲部120在第二方向的刚度在10GPa～1000GPa之间；在一些实施例中，弯曲部120在第二方向的刚度在10GPa～800GPa之间；在一些实施例中，弯曲部120在第二方向的刚度在10GPa～500GPa之间；在一些实施例中，弯曲部120在第二方向的刚度在10GPa～300GPa之间。
在一些实施例中，柔性显示面板100可以应用于显示设备1000。在一些实施例中，显示设备1000可以包括柔性显示面板100和转轴200。在一些实施例中，显示设备1000可以具有面积可变的显示屏。在一些实施例中，柔性显示面板100呈现于用户视野中的显示区域101可以作为显示设备1000的显示屏。在一些实施例中，柔性显示面板100的弯曲部120的部分或全部绕转轴200弯曲后可以收纳于显示设备1000的收纳区域(例如，非弯曲部110的背面)或卷绕在转轴200上，其中，弯曲部120卷绕在转轴200上以及位于收纳区域中的部分对用户不可见，位于收纳区域以外或未卷绕在转轴200的部分对用户可见。在一些实施例中，非弯曲部110和弯曲部120中对用户可见的部分上的显示区域101可以作为显示设备1000的显示屏。在一些实施例中，非弯曲部110和弯曲部120中对用户可见的部分上的显示区域101可以作为显示设备1000的显示屏。在一些实施例中，柔性显示面板100的弯曲部120可以沿第一方向经过转轴200进行滑移运动从收纳区域(例如，非弯曲部110的背面)拉出，作为扩展显示区域101可选择的呈现在用户视野中，成为显示设备1000的显示屏的一部分，从而增大显示设备1000的显示屏面积。在一些实施例中，弯曲部120也可以经过转轴200卷入非弯曲部110的背面进行收纳，从而增大显示设备1000的显示屏面积。在一些实施例中，当弯曲部120弯曲收纳于柔性显示面板100的背面时或卷绕在转轴200上时，该部分上的显示区域101不会被用户观察到，该部分上的显示区域101可以被设定成息屏状态；当弯曲部120绕转轴200的至少一部分被拉出至柔性显示面板100的正面时，返回正面的这一部分显示区域101可以转变为亮屏状态并显示内容，从而增大用户可以看到的显示区域101的面积。
在一些实施例中，如图2所示，柔性显示面板100可以包括显示层10和层组。在一些实施例中，层组可以包括上层组20和下层组30，其中，上层组20位于显示层10的上面，下层组30位于显示层10的下面。在一些实施例中，层组可以仅包括位于显示层10下面的下层组30。本申请所指的上和下表示相对于柔性显示面板100的非弯曲部110的显示面的正面和背面的方向，柔性显示面板100显示面的正面所在方向为上，柔性显示面板100显示面的背面所在方向为下。
在一些实施例中，显示层10可以对应于柔性显示面板100(包括非弯曲部110和弯曲部120)的显示区域101，以用于显示图像。在一些实施例中，显示层10中用于图像显示的显示器件的类型可以包括但不限于：有机发光二极管(Organic Light Emitting Diode，OLED)、发光二极管(Light Emitting Diode，LED)、微发光二极管(Micro Light  Emitting Diode，Micro LED)、次毫米发光二极管(Mini Light Emitting Diode，Mini LED)等。
在一些实施例中，显示层10可以包括至少两层。在一些实施例中，显示层10可以包括显示器件层11和显示驱动层12，其中，显示驱动层12可以位于显示器件层11的下面。在一些实施例中，显示器件层11可以包括有机发光二极管(Organic Light Emitting Diode，OLED)发光层，OLED发光层包括多个呈阵列排布的像素单元，这些像素单元发出光线以使得显示器件层能够显示图像。在一些实施例中，显示驱动层12可以用于为显示器件层11提供与显示相关的控制器件。在一些实施例中，显示驱动层12可以包括像素驱动电路，像素驱动电路与显示器件层11电性连接以用于控制显示器件层11的显示图像。在一些实施例中，像素驱动电路可以包括但不限于TFT(Thin Film Transistor)器件和电容器件等。
在一些实施例中，如图3所示，显示层10还可以包括封装层13，封装层13可以位于显示器件层11的上面。在一些实施例中，由于显示器件层11中的OLED发光层包括有机材料，有机材料对氧气及水蒸气较为敏感易受到氧气及水蒸气的侵蚀最终失效，从而降低OLED发光层的寿命。为了提高OLED发光层的寿命，可以通过钝化层封装技术、原子层沉积封装(Atomic layer deposition，ALD)技术、Barix封装技术、玻璃粉(FRIT)封装技术、薄膜(Thin-Film Encapsulation，TFE)封装技术等对显示器件层11进行封装，在显示器件层11的上面形成封装层13，封装层13可以阻隔氧气及水蒸气进入显示器件层11，以避免对OLED发光层中的有机材料进行侵蚀。在一些实施例中，封装层13可以是薄膜结构。在一些实施例中，封装层13的材料可以包括但不限于氮化硅、聚乙烯、聚丙烯酸酯、陶瓷、玻璃粉等。
在一些实施例中，如图3所示，显示层10还可以包括平坦化层14，平坦化层14可以位于显示器件层11和显示驱动层12之间。在一些实施例中，由于显示驱动层12具有像素驱动电路，为实现与显示器件层11的电性连接，显示驱动层12具有各种走线和过孔，造成显示驱动层12的上表面会有起伏，如果显示器件层11直接设置在显示驱动层12上，会导致显示器件层11的显示面(即朝向柔性显示面板100的正面的一面)不平坦，影响其显示效果。因此，可以将平坦化层14设置在显示器件层与显示驱动层12之间，平坦化层14的下表面能够与显示驱动层12的上表面贴合(即平坦化层14的下表面的形状可以对应于显示驱动层12的上表面形状)，而平坦化层14的上表面可以是相对较平坦的平面，当在平坦化层14的上表面设置显示器件层11时，可以使 得显示器件层11具有平坦的显示面，保证其显示效果。在一些实施例中，平坦化层14还可以设置从上到下的通孔，以便于实现显示驱动层12与显示器件层11的电性连接。在一些实施例中，平坦化层14可以包括但不限于二氧化硅、氮化硅等电绝缘体材料、有机聚合物(例如，基于丙烯酸、三聚氰胺-或氨基甲酸酯的聚合物。)或有机-无机杂化复合材料等。
在一些实施例中，显示层10可以是多层结构，为了将显示层10中各层固定连接在一起，显示层10中的相邻两层之间还可以设置有胶粘层(图中未示出)，胶粘层可以将显示层10中的相邻两层可靠地粘接在一起。在一些实施例中，显示层10中的胶粘层可以是具有很强粘性的光学胶。在一些实施例中，显示层10中的胶粘层可以是光学透明胶(Optically Clear Adhesive，OCA)。在一些实施例中，显示层10中胶粘层可以是紫外光固化胶等(Ultraviolet Rays，UV胶)。在一些实施例中，显示层10中的胶粘层可以与上层组20中的胶粘层24或下层组30中的胶粘层34可以由相同的材料制成。在一些实施例中，显示层10中的胶粘层可以与上层组20中的胶粘层24或下层组30中的胶粘层34可以由不同的材料制成，以满足显示层10、上层组20、下层组30分别对应不同粘接强度的需求。关于胶粘层24和胶粘层34的描述可以分别参见图4和图5及其相关描述。
在一些实施例中，上层组20可以用于保护显示层10，例如，上层组20可以保护显示层10受到冲击而损坏。在一些实施例中，如图4所示，上层组20可以包括盖板层21，盖板层21可以对显示层10进行保护。在一些实施例中，盖板层21可以是玻璃(例如，超薄玻璃(Ultra Thin Glass，UTG))。在一些实施例中，盖板层21可以是聚甲基丙烯酸甲酯(Polymethyl Methacrylate，PMMA)。在一些实施例中，盖板层21可以是透明聚酰亚胺(clear polyimide film，CPI)。
在一些实施例中，上层组20还可以为柔性显示面板提供触控功能。在一些实施例中，柔性显示面板的使用者可以在上层组上通过触控的方式对柔性显示面板显示的图像进行操作。如图4所示，上层组20还可以包括触控层22。触控层22设置在盖板层21的下方用于感知使用者在盖板层21上的触控动作。在一些实施例中，触控层22可以是聚对苯二甲酸乙二醇酯(PET)薄膜、铟锡氧化物(Indium tin oxide,ITO)薄膜等。在一些实施例中，触控层22可以包括检测触摸动作的触控传感器。在一些实施例中，触控传感器可以包括但不限于红外线式传感器、电阻式传感器、表面声波式传感器和电容式传感器等。在一些实施例中，盖板层21可以对触控层22进行保护，避免触控层22 因受到冲击而损坏。在一些实施例中，触控层22可以直接嵌入到显示层10中，在实现触控功能的同时，减小柔性显示面板100的厚度。
在一些实施例中，上层组20还可以吸收柔性显示面板中金属电极(例如，触控层中的金属电极、显示器件层中的金属电极)对于外界光线的反射光，降低外界光线的干扰，增加显示图像的对比度，使柔性设备的使用者可以清晰地看到显示图像。在一些实施例中，上层组20还可以包括光学层23。在一些实施例中，光学层23可以包括圆偏光片或线偏光片，用于吸收或折射反射光，以降低反射光对显示器件层11显示图像的干扰。在一些实施例中，偏光片的材料可以包括但不限于三醋酸纤维薄膜(Triacetyl Cellulose，TAC)、聚对苯二甲酸乙二醇酯(Polyethylene Terephthalate，PET)、环烯烃聚合物(Cyclo Olefin Polymer，COP)、聚甲基丙烯酸甲酯(Polymethyl Methacrylate，PMMA)等。在一些实施例中，光学层可以位于触控层22与显示层10之间。
在一些实施例中，上层组20可以包括至少一层。在一些实施例中，上层组20可以仅包括盖板层21。在一些实施例中，上层组20可以包括盖板层和光学层。在一些实施例中，上层组20可以同时包括盖板层21、触控层22和光学层23。在一些实施例中，如图4所示，为了将上层组20中的相邻两层进行固定连接，上层组20还可以包括设置上层组20中的相邻两层之间的胶粘层24，通过胶粘层24可以将盖板层21与触控层22、触控层22与光学层23可靠地粘接在一起。在一些实施例中，胶粘层24可以是具有很强粘性的光学胶。在一些实施例中，胶粘层24可以是光学透明胶(Optically Clear Adhesive，OCA)。在一些实施例中，胶粘层24可以是紫外光固化胶等(Ultraviolet Rays，UV胶)。
在一些实施例中，下层组30可以用于支撑上层组20和显示层10。在一些实施例中，如图5所示，下层组30可以包括支撑层31，支撑层31设置在显示层10(显示驱动层14)的下方，用于支撑显示层10以及上层组20。在一些实施例中，支撑层31的材料可以包括但不限于聚酰亚胺(Polyimide，PI)材料、聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，PET)材料、聚苯并咪唑(Polybenzimidazoles，PBI)材料、聚醚醚酮(Polyetheretherketone，PEEK)材料、聚偏氟乙烯(Polyvinylidene fluoride，PVDF)材料、聚醚类塑料(Polyphenylenesulphide，PPS)材料，以及上述材料的任意组合。在一些实施例中，支撑层31可以是具有弯曲性能的玻璃材料，仅需保证玻璃厚度符合弯折需求即可。在一些实施例中，在支撑层31的若干组合材料中，聚酰亚胺的质量占比为50％～100％；在一些实施例中，在支撑层31的若干组合材料中，聚酰亚胺 的质量占比为60％～90％。在一些实施例中，聚对苯二甲酸乙二醇酯的质量占比为0～20％；在一些实施例中，聚对苯二甲酸乙二醇酯的质量占比为0～10％；在一些实施例中，聚对苯二甲酸乙二醇酯的质量占比为0～4％。在一些实施例中，聚苯并咪唑的质量占比为0～30％；在一些实施例中，聚苯并咪唑的质量占比为5～20％；在一些实施例中，聚醚醚酮的质量占比为0～4％。在一些实施例中，聚偏氟乙烯的质量占比为0～10％；在一些实施例中，聚偏氟乙烯的质量占比为0～5％。在一些实施例中，聚醚类塑料的质量占比为0～10％；在一些实施例中，聚醚类塑料的质量占比为0～5％。
在一些实施例中，为了避免下层组30的支撑层31中的杂质(例如，一些导电性杂质)影响到显示层10中的显示驱动层12(例如，TFT器件)的性能。下层组30还可以包括设置在支撑层31与显示驱动层12之间的隔离层(图中未示出)，用于将支撑层31与显示驱动层12隔离。在一些实施例中，隔离层的材料可以是绝缘材料。在一些实施例中，隔离层的材料可以是氧化硅薄膜、聚丙烯薄膜、聚酯薄膜、聚苯乙烯薄膜等。在一些实施例中，还可以在支撑层31与显示驱动层12接触的表面上涂抹绝缘漆、绝缘胶等来代替隔离层。
在一些实施例中，当柔性显示面板100处于展开状态时，柔性显示面板100的弯曲部120和非弯曲部110共同进行图像显示，但由于弯曲部120的刚度较小，弯曲部120在进行图像显示时可能由于应力(例如，自身的重力)的作用而发生变形，使得其进行图像显示的表面较为不平坦或者与非弯曲部110的显示面挠曲，影响柔性显示面板100的显示效果。因此，下层组30还可以在柔性显示面板100在展开时提供一定的刚性支撑，保持柔性显示面板100的表面平坦。如图5所示，下层组还可以包括强化支撑层32。强化支撑层32可以设置在支撑层31的下方，强化支撑层32具有足够的刚性能够对显示层10和上层组20进行支撑，提高柔性显示面板100的刚性。在一些实施例中，强化支撑层32的材料可以包括刚性材料。在一些实施例中，用于强化支撑层32的刚性材料可以是具有较高杨氏模量的材料。在一些实施例中，用于强化支撑层32的刚性材料的杨氏模量的范围可以是40Gpa～100Gpa。在一些实施例中，用于强化支撑层的刚性材料的杨氏模量的范围可以是50Gpa～100Gpa。在一些实施例中，用于强化支撑层的刚性材料的杨氏模量的范围可以是40Gpa～70Gpa。在一些实施例中，强化支撑层32的材料可以包括但不限于钢、钛合金、铝合金、玻璃、碳纤维、玻璃纤维等具有一定刚性的材料。在一些实施例中，可以在强化支撑层32上设置一定数量的图形孔，图形孔可以用来调整强化支撑层32的刚性。当强化支撑层32选用的刚性材料刚性过大时，而 导致强化支撑层32无法在柔性显示面板100弯曲时进行弯曲，在这种情况下，可以通过在强化支撑层32上设置一定数量的图形孔，图形孔越多，强化支撑层32的刚性就越小。在一些实施例中，图形孔的形状可以包括但不限于圆形、三角形、菱形、正方形等规则或不规则的形状。在一些实施例中，强化支撑层32可以由加强筋代替，由加强筋实现为柔性显示面板100在展开时提供一定的刚性支撑。
在一些实施例中，如图5所示，下层组30还可以包括缓冲层33。在一些实施例中，缓冲层可以用于当柔性显示面板100受到冲击时起缓冲作用。在一些实施例中，缓冲层33可以设置在支撑层31的下方，并位于支撑层31和强化支撑层32之间。在一些实施例中，缓冲层33的材料可以包括但不限于泡棉类材料，例如聚氨基甲酸酯(Polyurethane，PU)泡棉、硅泡棉、亚克力泡棉。
在一些实施例中，下层组30可以包括至少一层。在一些实施例中，下层组30可以仅包括支撑层31。在一些实施例中，下层组可以包括支撑层31和强化支撑层32。在一些实施例中，下层组30可以包括支撑层31、缓冲层33和强化支撑层32。在一些实施例中，为了将下层组30之间的各层进行固定连接，下层组30还可以包括设置在相邻两层之间的胶粘层34，通过胶粘层34可以将支撑层31与缓冲层33、缓冲层33与强化支撑层32可靠地粘接在一起。在一些实施例中，胶粘层34可以是具有很强粘性的光学胶。在一些实施例中，胶粘层34可以是光学透明胶(Optically Clear Adhesive，OCA)。在一些实施例中，胶粘层34可以是紫外光固化胶等(Ultraviolet Rays，UV胶)。在一些实施例中，下层组30中的胶粘层34可以与上层组20中的胶粘层24用同样的材料做成。在一些实施例中，下层组30中的胶粘层34可以与上层组20中的胶粘层24用不同的材料做成，以满足上层组20下层组30中的各层之间的粘接强度需求。
在一些实施例中，柔性显示面板100可以通过卷曲运动或滑移运动实现其收起或展开。在一些实施例中，柔性显示面板100的弯曲部120可以与转轴200连接，当柔性显示面板100不需要显示时，转轴200可以带动弯曲部120围绕转轴200进行卷曲运动，使得弯曲部120的部分或全部逐渐卷绕在转轴200上，此时弯曲部120的部分或全部收纳在转轴200上，弯曲部120的部分或全部不会被用户观察到，不会被用户观察到的弯曲部上的显示区域101可以不进行图像显示；当柔性显示面板100需要展开时，转轴200转动可以使弯曲部120的部分或全部绕转轴200进行展开，弯曲部120的部分或全部呈现在用户的视野中，呈现在用户视野中的弯曲部120上的显示区域101可以作为扩展显示区域与非弯曲部110上的显示区域(主显示区域)共同向用户呈现图像。 在一些实施例中，柔性显示面板的弯曲部120可以与终端设备的运动机构连接，运动机构可以带动弯曲部120进行滑移运动，当柔性显示面板100展开时，可以使弯曲部120的部分或全部通过沿第一方向的滑移运动经过转轴200从非弯曲部110的背面(即收纳区域)退出，弯曲部120的部分或全部运动到柔性显示面板100的正面以呈现在用户的视野中，此时弯曲部12上的部分或全部显示区域101可以作为扩展显示区域与非弯曲部110上的主显示区域共同向用户呈现图像；当柔性显示面板100收起时，弯曲部120的部分或全部可以通过沿第一方向的滑移运动经过转轴200进入到非弯曲部110的背面(即收纳区域)，位于收纳区域内的弯曲部120不会呈现在用户的视野中，位于收纳区域内的弯曲部120上的显示区域101可以不进行图像显示。在一些实施例中，柔性显示面板100的弯曲部120的至少一部分需要与转轴200或运动机构连接来实现柔性显示面板100的卷曲运动或滑移运动。
在一些实施例中，为了使得柔性显示面板100完全展开时，弯曲部120和非弯曲部110上的显示区域101能够最大程度地向用户呈现图像，以保证柔性显示面板100的显示层尽可能位于柔性显示面板100的正面来提供图像显示，可以在柔性显示面板100沿第一方向的至少一端设置延长部140来与转轴200或运动机构连接。在一些实施例中，延长部140可以包括上层组20和/或下层组30分别沿第一方向相对显示层10额外的长度，使柔性显示面板100包含显示层10的弯曲部120不直接与转轴200或运动机构连接，而通过设置在柔性显示面板100沿第一方向的一端的非显示层部分来与转轴200或运动机构连接，使柔性显示面板100在完全展开时，弯曲部120中的显示层10尽可能位于柔性显示面板100的正面，弯曲部120上的显示区域101可以作为扩展显示区域与非弯曲部110上的主显示区域共同向用户呈现图像，使得柔性显示面板100的显示区域101能够最大程度地向用户呈现图像。
在一些实施例中，可以将上层组20和/或下层组30中的至少一层沿第一方向进行延长，使得上层组20和/或下层组30中的至少一层沿第一方向的长度大于显示层10沿第一方向的长度。其中，上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部可以作为柔性显示面板100的一端的延长部140与转轴200或运动机构连接。
在一些实施例中，上层组20中的盖板层21沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的胶粘层24沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的触控层22沿第一方向的 长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的光学层23沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中可以有多层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的盖板层21和胶粘层24沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中盖板层21、胶粘层24和光学层23沿第一方向的长度大于显示层10沿第一方向的长度。
在一些实施例中，下层组30中的支撑层31沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的强化支撑层32沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的缓冲层33沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30的中胶粘层34沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30的中隔离层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中可以有多层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的支撑层31、强化支撑层32和胶粘层34沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的支撑层31和强化支撑层32沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的支撑层31、强化支撑层32、缓冲层33和胶粘层34沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的支撑层31、强化支撑层32、缓冲层33、胶粘层34以及隔离层沿第一方向的长度大于显示层10沿第一方向的长度。
上层组20和/或下层组30中的至少一层沿第一方向与显示层10沿第一方向的长度差值需要结合应用和材料的性质仔细选取；过长不但浪费材料，而且占用额外空间，过短又无法实现必要的功能。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向与显示层10沿第一方向的长度差值在0.5cm～5cm之间。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向与显示层10沿第一方向的长度差值在0.5cm～3cm之间。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向与显示层10沿第一方向的长度差值在1cm～2cm之间。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向与显示层10沿第一方向的长度差值在1.2～1.6cm之间。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向与显示层10沿第一方向的长度差值即为上层组20和/或下层组30中的至少一层沿第一方向所延伸的长度，也是柔性显示面板100沿第一方向的一端的延长部140的长度。在 一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向延伸的长度可以与层自身的材料特性相关，例如，层的材料具有较大的抗拉强度，该层沿第一方向延伸的长度就可以较小，即柔性显示面板100沿第一方向的一端的延长部140具有较小的长度便能与转轴200或运动机构具有较大的连接强度。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向延伸的长度可以与柔性显示面板100沿第一方向的一端的延长部140与转轴或运动机构的连接方式有关，例如，柔性显示面板100沿第一方向的一端的延长部140可以转轴200或运动机构通过粘接的方式连接，其采用的粘接剂的粘接强度越强，上层组20和/或下层组30中的至少一层沿第一方向延伸的长度可以越小也能保证延长部140与转轴200或运动机构之间的连接强度。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向延伸的长度可以与转轴200的半径有关，如图6所示，柔性显示面板100处于完全展开的状态下，为了使柔性显示面板100的显示区域101能够最大程度地向用户呈现图像，柔性显示面板100中的显示层10能够完全位于柔性显示面板100的正面，以完全进行图像显示，例如，当柔性显示面板100通过沿第一方向的滑移运动完全展开时，弯曲部120上的全部显示区域101均位于柔性显示面板100的正面，此时弯曲部120不具有绕转轴200弯曲的部分，而是柔性显示面板100沿第一方向的一端的延长部140绕转轴200进行弯曲，转轴200的半径越大，延长部140沿第一方向的长度就越大，上层组和/或下层组中的至少一层沿第一方向延伸的长度就可以越大。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向延伸的长度可以大于或等于转轴200的径向周长的1/3。
在一些实施例中，如图7所示，可以仅将上层组20中的至少一层沿第一方向进行延长作为柔性显示面板100的一端的延长部140。在一些实施例中，可以仅将上层组中的一层沿第一方向进行延长。在一些实施例中，可以仅将上层组20中的盖板层21沿第一方向进行延长，使得盖板层21沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将上层组20中的触控层22沿第一方向进行延长，使得触控层22沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将上层组20中的光学层23沿第一方向进行延长，使得光学层23沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将上层组20中的胶粘层24沿第一方向进行延长，使得胶粘层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以将上层组20中若干层沿第一方向进行延长，使得上层组20中的若干层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以将 上层组20中的盖板层21和胶粘层24分别沿第一方向进行延长，使得盖板层21和胶粘层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以将上层组20中的盖板层21、胶粘层24和光学层23分别沿第一方向进行延长，使得盖板层21、胶粘层和光学层23沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的若干层沿第一方向相对于显示层10延伸的长度可以相同。在一些实施例中，上层组20中的若干层沿第一方向相对于显示层10延伸的长度可以不完全相同或完全不同。在一些实施例中，在将盖板层21、触控层22、光学层23和/或胶粘层24分别沿第一方向进行延长的情况下，盖板层21沿第一方向相对显示层10延伸的长度可以大于触控层22、光学层23沿第一方向延伸的长度，使得盖板层21沿第一方向的长度大于触控层22、光学层23沿第一方向的长度，这样可使得盖板层21能够充分保护触控层22和光学层23。在一些实施例中，盖板层21沿第一方向与触控层22、光学层23沿第一方向的长度差值在0～2mm以内。在一些实施例中，盖板层21沿第一方向与触控层22、光学层23沿第一方向的长度差值在0～1mm以内。在一些实施例中，盖板层21沿第一方向与触控层22、光学层23沿第一方向的长度差值在0～0.5mm以内。
在一些实施例中，如图8所示，可以仅将下层组30中的至少一层沿第一方向进行延长作为柔性显示面板100的一端的延长部140。在一些实施例中，可以仅将下层组30中的一层沿第一方向进行延长。在一些实施例中，可以仅将下层组30中的支撑层31沿第一方向进行延长，使得支撑层31沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将下层组30中的强化支撑层32沿第一方向进行延长，使得强化支撑层32沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将下层组30中的缓冲层33沿第一方向进行延长，使得缓冲层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将下层组30中的胶粘层34沿第一方向进行延长，使得胶粘层34沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以仅将下层组30中的隔离层沿第一方向进行延长，使得隔离层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以将下层组30中若干层分别沿第一方向进行延长，使得下层组30中的若干层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以将下层组中支撑层31、强化支撑层32、缓冲层33和胶粘层34分别沿第一方向进行延长，使得支撑层31、强化支撑层32、缓冲层33和胶粘层34沿第一方向的长度均大于显示层10沿第一方向的长度。在一些实施例中，可以将下层组30中支撑层31、强化支撑层32、缓冲层33和 胶粘层34以及隔离层分别沿第一方向进行延长，使得支撑层31、强化支撑层32、缓冲层33和胶粘层34以及隔离层沿第一方向的长度均大于显示层10沿第一方向的长度。在一些实施例中，下层组30中的若干层沿第一方向相对于显示层10延伸的长度可以相同，使得下层组30中的若干层沿第一方向的长度相同。在一些实施例中，下层组30中的若干层沿第一方向相对于显示层10延伸的长度可以不完全相同或完全不同，使得下层组30中的若干层沿第一方向的长度不完全相同或完全不同。
在一些实施例中，如图2所示，可以将上层组20中的至少一层与下层组30中的至少一层沿第一方向共同进行延长以共同作为柔性显示面板100的一端的延长部140。在一些实施例中，可以分别将上层组20中的一层和下层组30中的一层同时沿第一方向进行延长。在一些实施例中，可以分别将上层组20中的盖板层21和下层组30中的支撑层31同时沿第一方向进行延长，使得上层组20中的盖板层21和下层组30中的支撑层31沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，盖板层21与支撑层31沿第一方向的长度可以相同也可以不同。在一些实施例中，可以分别将上层组20中的盖板层21和下层组30中的强化支撑层32分别沿第一方向进行延长，使得上层组20中的盖板层21和下层组30中的强化支撑层32沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，盖板层21与强化支撑层32沿第一方向的长度可以相同也可以不同。在一些实施例中，可以分别将上层组20中的若干层与下层组30中的一层沿第一方向进行延长，使得上层组20中的若干层与下层组30中的一层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以分别将上层组20中的盖板层21、胶粘层24以及下层组30中的支撑层31沿第一方向进行延长，使得上层组20中的盖板层21、胶粘层24以及下层组30中的支撑层31沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以分别将上层组20中的盖板层21、光学层23、胶粘层24以及下层组30中的支撑层31沿第一方向进行延长，使得上层组20中的盖板层21、光学层23、胶粘层24以及下层组30中的支撑层31沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的若干层以及下层组30中的一层沿第一方向的长度可以相同、不完全相同或完全不同。在一些实施例中，上层组20中的若干层沿第一方向的长度相同但与下层组30中的一层沿第一方向的长度不同。在一些实施例中，可以分别将上层组20中的一层与下层组30中的若干层沿第一方向进行延长。在一些实施例中，可以分别将上层组20中的盖板层21与下层组30中的支撑层31、强化支撑层32、胶粘层34沿第一方向进行延长，使得 上层组20中的盖板层21与下层组30中的支撑层31、强化支撑层32、胶粘层34沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，可以分别将上层组20中的盖板层21与下层组30中的支撑层31、强化支撑层32、缓冲层33、胶粘层34以及隔离层沿第一方向进行延长，使得上层组20中的盖板层21与下层组30中的支撑层31、强化支撑层32、缓冲层33、胶粘层34以及隔离层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20的一层以及下层组30中的若干层沿第一方向的长度可以相同、不完全相同或完全不同。在一些实施例中，下层组30中的若干层沿第一方向的长度相同但与上层组20中的一层沿第一方向的长度不同。在一些实施例中，可以分别将上层组20中的若干层和下层组30中的若干层沿第一方向进行延长，在一些实施例中，可以分别将上层组20中的盖板层21、光学层23、胶粘层24以及下层组30中的支撑层31、强化支撑层32、缓冲层33、胶粘层34沿第一方向进行延长，使得上层组20中的盖板层21、光学层23、胶粘层24以及下层组30中的支撑层31、强化支撑层32、缓冲层33、胶粘层沿第一方向的长度大于显示层10沿第一方向的长度。在一些实施例中，上层组20中的若干层以及下层组30中的若干层沿第一方向相对于显示层10延伸的长度可以相同、不完全相同或完全不同。在一些实施例中，上层组20中的若干层沿第一方向的长度相同，下层组20中的若干层沿第一方向的长度相同，并且上层组20中的若干层沿第一方向的长度与下层组中的若干层沿第一方向的长度不同。
在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部可以与其对应的层为一体成型，具有相同的材料和厚度。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部可以是上层组20和/或下层组30中的至少一层沿第一方向相对显示层10延伸(或额外)的长度。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部与其对应的层可以分开设置，使得层的延长部与其对应的层具有相同或不同的材料和/或厚度。
在一些实施例中，在将上层组20和/或下层组30中的至少一层沿第一方向进行延长后，柔性显示面板100可以包括具有显示层10的未延长区域(包括弯曲部120和非弯曲部110)以及设置在柔性显示面板100沿第一方向的至少一端的延长部140，其中，柔性显示面板100沿第一方向的一端的延长部140不具有显示层，柔性显示面板100的未延长区域与延长部140厚度不同，使得柔性显示面板100沿第一方向的整体厚 度不一致。在一些实施例中，为了补偿延长部140与未延长区域的厚度差距，柔性显示面板还可以包括填充层40。
如图7所示，当仅将上层组20中的至少一层沿第一方向进行延长时，填充层40可以位于上层组20中的至少一层沿第一方向相对显示层10的延长部的下面。在一些实施例中，当仅将盖板层21沿第一方向进行延长时，填充层40可以位于盖板层21沿第一方向相对显示层10的延长部的下面。在一些实施例中，盖板层21沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和可以与柔性显示面板100的未延长区域的厚度(上层组20、显示层10、下层组30的厚度之和)相同或基本相同。在一些实施例中，盖板层21沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度基本相同是指盖板层21沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间存在一定差值。在一些实施例中，盖板层21沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间的差值在0～3mm以内。在一些实施例中，盖板层21沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间的差值在0～2mm以内。在一些实施例中，盖板层21沿第一方向相对显示层的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间的差值在0～1mm以内。
如图8所示，当仅将下层组30中的至少一层沿第一方向进行延长时，填充层40可以位于下层组30中的至少一层沿第一方向相对显示层10的延长部的上面。在一些实施例中，当仅将支撑层31沿第一方向进行延长时，填充层40可以位于支撑层31的上面。在一些实施例中，支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和可以与柔性显示面板100上未延长区域的厚度(上层组20、显示层10、下层组30的厚度之和)基本相同。在一些实施例中，支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度基本相同是指支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间存在一定差值。在一些实施例中，支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间的差值在0～3mm以内。在一些实施例中，支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间的差值在0～2mm以内。在一些实施例中，支撑层31沿第一方向 相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间的差值在0～1mm以内。
在一些实施例中，当分别将上层组20中的至少一层与下层组30中的至少一层沿第一方向进行延长时，填充层40可以位于上层组20中的至少一层沿第一方向相对显示层10的延长部与下层组20中的至少一层沿第一方向相对显示层10的延长部之间。在一些实施例中，当分别将盖板层21和支撑层31沿第一方向进行延长时，填充层40可以位于盖板层21和支撑层31沿第一方向相对显示层10的延长部之间。在一些实施例中，盖板层21以及支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和可以与柔性显示面板100上未延长区域的厚度(上层组20、显示层10、下层组30的厚度之和)相同或基本相同。在一些实施例中，盖板层21以及支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度基本相同是指盖板层21以及支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和与柔性显示面板100上未延长区域的厚度之间存在一定差值。在一些实施例中，盖板层21以及支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和可以与柔性显示面板100上未延长区域的厚度之间的差值在0～3mm以内。在一些实施例中，盖板层21以及支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和可以与柔性显示面板100上未延长区域的厚度之间的差值在0～2mm以内。在一些实施例中，盖板层21以及支撑层31沿第一方向相对显示层10的延长部的厚度与填充层40的厚度之和可以与柔性显示面板上未延长区域的厚度之间的差值在0～1mm以内。
在一些实施例中，如图2所示，当将上层组20中的所有层与下层组30中的所有层沿第一方向进行延长时，填充层40可以位于上层组20沿第一方向相对显示层10的延长部的最下面和下层组30沿第一方向相对显示层10的延长部的最上面之间。在一些实施例中，填充层40的厚度可以与显示层10的厚度相同或基本相同。在一些实施例中，填充层40的厚度与显示层10的厚度基本相同是指填充层40的厚度与显示层10的厚度之间存在一定差值。在一些实施例中，填充层40的厚度与显示层10的厚度的差值在0～3mm以内。在一些实施例中，填充层40的厚度与显示层10的厚度的差值在0～2mm以内。在一些实施例中，填充层40的厚度与显示层10的厚度的差值在0～1mm以内。在一些实施例中，由于上层组20中的至少一层与柔性显示面板100未延长区域的对应层可以是非一体成型，使得上层组20中的至少一层与柔性显示面板100未延长区域的 对应层的厚度可以不同。在一些实施例中，在将上层组20中的所有层与下层组30中的所有层沿第一方向进行延长的情况下，当上层组20和/或下层组30中的至少一层沿第一方向相对显示层的延长部小于未延长区域的对应层的厚度时，填充层40的厚度可以大于显示层10的厚度。在一些实施例中，填充层40的厚度可以比显示层10的厚度大5mm。在一些实施例中，填充层40的厚度可以比显示层10的厚度大4mm。在一些实施例中，填充层40的厚度可以比显示层10的厚度大3mm。在一些实施例中，在将上层组20中的所有层与下层组30中的所有层沿第一方向进行延长的情况下，当上层组20和/或下层组30中的至少一层沿第一方向相对显示层的延长部大于未延长区域的对应层的厚度时，填充层40的厚度可以小于显示层10的厚度。在一些实施例中，填充层的厚度可以显示层的厚度小5mm。在一些实施例中，填充层的厚度可以显示层的厚度小4mm。在一些实施例中，填充层的厚度可以显示层的厚度小3mm。
在一些实施例中，填充层40不仅可以使柔性显示面板100的整体厚度一致，还可以防止显示层10的末端(即显示层10沿第一方向靠近延长部140的一端)在绕预定轴线130进行弯曲时可能发生变形而导致劈裂。具体地，填充层40的一端(即填充层40沿第一方向靠近显示层10的末端的一端)与显示层10的末端在第一方向上存在一定间距，当显示层10的末端发生变形时，该间距可为显示层10提供变形的空间，而填充层40可以限制显示层10的末端变形，防止显示层10的末端变形严重而劈裂。在一些实施例中，填充层40的一端与显示层10的末端在第一方向上的间距为0.1mm～1mm。在一些实施例中，填充层40的一端与显示层10的末端在第一方向上的间距为0.1mm～2mm。在一些实施例中，填充层40的一端与显示层10的末端在第一方向上的间距为0.1mm～3mm。
在一些实施例中，填充层40的材料可以为柔性材料。在一些实施例中，柔性材料的杨氏模量在2Gpa～6Gpa范围内。在一些实施例中，柔性材料的杨氏模量在2Gpa～8Gpa范围内。在一些实施例中，柔性材料的杨氏模量在2Gpa～80Gpa范围内。在一些实施例中，填充层40的材料可以包括凝胶、硅胶、泡棉以及聚酰亚胺中至少一种。
在一些实施例中，填充层40可以包括具有一定粘度的液体，当柔性显示面板100在进行卷曲运动或滑移运动时，填充层40中的液体会随柔性显示面板的运动而流动，流动所产生的位移可以补偿显示层10在运动过程中发生的形变，从而避免由于显示层10发生形变而导致柔性显示面板100的显示效果不佳的情况。在一些实施例中，填充层40中的液体的粘度在0.1～100Pa·s范围内。在一些实施例中，填充层40中的液 体的粘度在0.5～80Pa·s范围内。在一些实施例中，填充层40中的液体的粘度在1～50Pa·s范围内。在一些实施例中，填充层40的材料可以包括液体硅胶、液体树脂、液体PVC等中的一种或多种。
在一些实施例中，如图6所示，无论柔性显示面板100在进行卷曲运动或滑移运动时，为了在柔性显示面板完全展开时使得柔性显示面板100的显示区域101能够最大程度地向用户呈现图像，柔性显示面板100的弯曲部120可以不再绕转轴200进行弯曲，而位于柔性显示面板100的正面，使得弯曲部120可以呈现在用户的视野中，弯曲部120上的显示区域101作为扩展显示区域和与非弯曲部110上的主显示区域共同向用户呈现图像，设置在柔性显示面板100沿第一方向的一端的非显示层部分(即延长部140)需要绕转轴200进行弯曲，而填充层40则需要与延长部140绕转轴200同步进行弯曲。为了保证填充层40能够充分弯曲，填充层在第一方向上可以具有较小的刚度。在一些实施例中，填充层40在第一方向上的刚度数值范围包括2Gpa～10Gpa。在一些实施例中，填充层40在第一方向上的刚度数值范围包括2Gpa～12Gpa。在一些实施例中，填充层40在第一方向上的刚度数值范围包括2Gpa～80Gpa。
在一些实施例中，由于填充层40需要与对应的柔性显示面板100的一端的延长部140同步进行弯曲，填充层40与延长部140在第一方向上的长度基本相同。在一些实施例中，填充层40与延长部140在第一方向上的长度差值范围可以包括2Gpa～10Gpa。在一些实施例中，填充层40与延长部140在第一方向上的长度差值范围可以包括2Gpa～12Gpa。在一些实施例中，填充层40与延长部140在第一方向上的长度差值范围可以包括2Gpa～80Gpa。
在一些实施例中，如图6所示，当柔性显示面板100完全展开时，柔性显示面板100沿第一方向的一端的延长部140的部分可以绕转轴200进行弯曲，而另一部分仍位于非弯曲部110的背面，相应地，填充层40在第一方向上可以包括第一区域41和第二区域42，其中，第一区域41相对于第二区域42更靠近显示层10。当填充层40绕转轴200进行弯曲时，可以是第一区域41绕转轴进行弯曲，而第二区域42则位于非弯曲部110的背面，不绕转轴200进行弯曲。因此，填充层40在第一区域41和第二区域42可以具有不同的填充材料，使得填充层40在第一区域41的刚度小于第二区域42的刚度。在一些实施例中，填充层40在第一区域41和第二区域42的刚度差值在-7Gpa～4Gpa范围以内。在一些实施例中，填充层40在第一区域41和第二区域42的刚度差值在-7Gpa～6Gpa范围以内。在一些实施例中，填充层40在第一区域41和第二区域42的刚 度差值在-7Gpa～74Gpa范围以内。在一些实施例中，填充层40在第一区域41的填充材料可以包括PI、PET、PEN\PMMA\PC\玻璃、钢片、合金、碳纤维中的至少一种。在一些实施例中，填充层40在第二区域42的填充材料可以包括凝胶、硅胶、泡棉以及聚酰亚胺中至少一种。
在一些实施例中，如图9所示，柔性显示面板100再通过沿第一方向的滑移运动完全展开时，可以是柔性显示面板100的未延长区域(弯曲部120)围绕转轴200进行弯曲。在一些实施例中，柔性显示面板100的未延长区域可以围绕转轴200弯曲180°，并且显示层10的末端(靠近延长部140的一端)位于转轴200的最下方的位置A，此时柔性显示面板100的一端的延长部140可以不用绕转轴200进行弯曲，因此填充层40也不用进行弯曲，填充层40在第一方向上可以具有较大的刚度。在一些实施例中，填充层第一方向的刚度数值范围可以包括2Gpa～10Gpa。在一些实施例中，填充层第一方向的刚度数值范围可以包括2Gpa～12Gpa。在一些实施例中，填充层第一方向的刚度数值范围可以包括2Gpa～80Gpa。在一些实施例中，填充层40的材料可以包括PI、PET、PEN\PMMA\PC\玻璃、钢片、合金、碳纤维中至少一种。
在一些实施例中，为了控制柔性显示面板100的图像显示，柔性显示面板还可以包括柔性电路板(图中未示出)，其中，柔性电路板可以用于将柔性显示面板100与终端设备的主板电路连接，向柔性显示面板100的显示层10传递控制信号，显示层10可以基于控制信号进行相应的图像显示。在一些实施例中，柔性电路板可以与上层组20连接。在一些实施例中，柔性电路板可以与触控层22连接，触控层22产生的触控信号可以通过柔性电路板传递到终端设备的主板电路，从而实现与触控信号对应的触控操作，实现不同的图像显示。在一些实施例中，柔性电路板可以与上层组20延长的一端连接，或者与上层组远离其延长的一端连接。在一些实施例中，柔性电路板可以与显示层10连接。在一些实施例中，柔性电路板可以与显示驱动层12连接。在一些实施例中，柔性电路板可以与显示驱动层12中的像素驱动电路(例如，TFT器件)连接，显示驱动层12可以基于控制信号生成图像信号，并且基于图像信号驱动OLED发光层11进行发光，从而实现显示层10的图像显示。在一些实施例中，柔性电路板可以连接于显示层10靠近上层组20和/或下层组30延长的一端。在一些实施例中，柔性电路板可以连接于显示层10远离上层组20和/或下层组30未延长的一端。可以理解的是，显示层10远离或靠近上层组和/或下层组延长的一端可以是显示层10远离或靠近上层组20和/或下层组30沿第一方向相对显示层10的延长部的一端。在一些实施例中，柔性电路板还 可以与下层组20的延长的一端或未延长的一端连接。在一些实施例中，柔性电路板可以包括集成电路、电容、电阻、二极管等或其组合。在一些实施例中，柔性电路板与柔性显示面板的连接方式可以包括但不限于焊接、胶接、插接等。例如，柔性电路板可以与柔性显示面板的引脚进行焊接上；又例如，柔性电路板上具有排针，柔性显示面板上设置有与排针对应的排母，或者柔性电路板上具有排母，柔性显示面板上设置有与排母对应的排针，通过将排针插在排母内可以实现柔性电路板与柔性显示面板的连接。在一些实施例中，柔性电路板可以包括单面柔性板、双面柔性板、多层柔性板、高密度互连(High Density Interconnection，HDI)刚挠结合板等。
在一些实施例中，柔性电路板还可以用于与柔性显示面板100上的电源接口和/或信号接口连接。
在一些实施例中，柔性显示面板100还可以包括电源接口(图中未示出)。在一些实施例中，电源接口可以用于连接向柔性显示面板100提供工作所需电力的电源。在一些实施例中，柔性显示面板100可以不具有电源接口，而是通过内置的电池为柔性显示面板100提供电源。
在一些实施例中，柔性显示面板100还可以包括信号接口(图中未示出)。在一些实施例中，信号接口可以用于将柔性显示面板与信号源连接。在一些实施例中，所述信号源可以是任意类型的能够进行影像数据输出的终端设备，包括但不限于手机、平板电脑、个人电脑、电视机、游戏机等。在一些实施例中，信号接口可以是有线接口。在一些实施例中，有线接口可以包括但不限于交互式数字视频系统(Digital Visual Interface，DVI)接口、高清晰度多媒体(High Definition Multimedia Interface，HDMI)接口、模拟接口(D-subminiature，D-sub)、视频图形阵列(Video Graphics Array，VGA)接口、数据处理(Data Processing，DP)接口、通用串行总线(Universal Serial Bus，USB)接口等。在一些实施例中，信号接口也可以是无线接口。在一些实施例中，无线接口可以是任意类型的无线网络接口，包括但不限于区域网络(Local Area Network，LAN)接口、广域网络(Wide Area Network，WAN)接口、无线区域网络(Wireless Local Area Network，WLAN)接口、都会区域网络(Metropolitan Area Network，MAN)接口、蓝牙网络接口、紫峰(ZigBee)无线网络接口、近场通讯(Near-field Communication，NFC)网络接口等。
在一些实施例中，电源接口和信号接口也可以一体实现，即柔性显示面板100可以提供一个接口，该接口可以在将柔性显示面板100与信号源连接的同时，为柔性显 示面板100提供电源连接。需要注意的是，柔性显示面板100也可以没有电源接口和信号接口，其不会影响柔性显示面板100的显示性能及支撑性能。
在一些实施例中，柔性显示面板100设置有延长部140的一端可以用于与终端设备连接。例如，柔性显示面板100设置有延长部140的一端可以设有电源接口和/或信号接口，柔性显示面板100设置有延长部140的一端可以通过电源接口和/或信号接口与终端设备进行连接，使得终端设备可以通过电源接口和/或信号接口为柔性显示面板100提供其工作所需的电力和/或用于图像显示的控制信号。在一些实施例中，柔性显示面板100设置有延长部140的一端可以是柔性显示面板100沿第一方向的延长端(又称为柔性显示面板100的延长端)，柔性显示面板100沿第一方向的延长端可以是柔性显示面板100中上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部的一端。在一些实施例中，延长部140可以包括上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部，上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部可以仅设置在柔性显示面板100沿第一方向的其中一端，即柔性显示面板沿第一方向的两端中仅有一端为柔性显示面板的延长端。在一些实施例中，上层组20和/或下层组30中的至少一层沿第一方向相对显示层10的延长部可以设置在柔性显示面板100沿第一方向的两端，即柔性显示面板100沿第一方向的两端均为柔性显示面板100的延长端。在一些实施例中，延长部140可以包括上层组20和/或下层组30中的至少一层沿第二方向相对显示层10的延长部，上层组20和/或下层组30中的至少一层沿第二方向相对显示层10的延长部可以仅设置在柔性显示面板100沿第二方向的其中一端，即柔性显示面板100沿第二方向的两端中仅有一端为柔性显示面板100的延长端。在一些实施例中，上层组20和/或下层组30中的至少一层沿第二方向相对显示层10的延长部可以设置在柔性显示面板沿第二方向的两端，即柔性显示面板100沿第二方向的两端均为柔性显示面板100的延长端。在一些实施例中，柔性显示面板的延长端可以包括延长部140。在本申请中，延长部140设置在柔性显示面板100沿第一方向的至少一端。
在一些实施例中，柔性显示面板100的延长端(延长部140)可以用于与终端设备的运动机构连接，以此实现柔性显示面板100的滑移运动。具体地，运动机构可以带动柔性显示面板100的延长端沿第一方向相对终端设备移动，使得柔性显示面板100的弯曲部120可以沿第一方向经过转轴200运动进入到非弯曲部110的背面(又称为收纳区域)或从收纳区域退出，同时柔性显示面板100的非弯曲部110也可以在弯曲部 120带动下沿与弯曲部120运动方向的相反方向进行运动，当柔性显示面板100展开时，弯曲部120的部分或全部从收纳区域内退出，从收纳区域内退出的弯曲部120可以运动到柔性显示面板100的正面，弯曲部120上的部分或全部显示区域101可以作为扩展显示区域与非弯曲部110上的主显示区域共同向用户呈现图像，当柔性显示面板100收起时，弯曲部120的部分或全部可以进入到收纳区域内，位于收纳区域内的弯曲部120不被用户观察到，位于收纳区域内的弯曲部120上的显示区域101可以不进行图像显示(例如，处于息屏状态)，从而实现柔性显示面板100的收起或展开。在一些实施例中，当柔性显示面板100完全展开时，柔性显示面板的显示层10的末端(即显示层10靠近柔性显示面板100的延长端的一端)可以运动到转轴200的最下方的位置A处，如图9所示，此时柔性显示面板100的延长部140不必绕转轴200进行弯曲，因此与延长部140对应的填充层40可以具有较大的刚度，部分弯曲部仍绕在转轴上而未处于柔性显示面板100的正面，未进行图像显示，其中，该部分弯曲部绕转轴200弯曲的角度为180°。在一些实施例中，当柔性显示面板100全展开时，显示层10的末端可以运动到转轴的最上方的位置B处，如图6所示，柔性显示面板100的弯曲部120可以全部运动到柔性显示面板100的正面以进行图像显示，此时延长部140绕转轴200进行了弯曲，延长部140弯曲的角度为180°，而与延长部140对应的填充层40也绕转轴200进行了弯曲，因此与延长部140对应的填充层40需要较小的刚度。在一些实施例中，如图10所示，当柔性显示面板100完全展开时，显示层10的末端可以运动到转轴200的位置A和位置B之间的位置C处，此时部分弯曲部卷绕在转轴上而不处于柔性显示面板100的正面，卷绕在转轴200上的弯曲部120上的显示区域101不能被用户观察到，卷绕在转轴200上的弯曲部120上的显示区域101不进行图像显示，并且延长部140靠近显示层10的末端的部分绕转轴200进行了弯曲，此时绕在转轴上进行弯曲的部分弯曲部和绕在转轴200上进行弯曲的延长部140的部分的弯曲的角度均在在0°～180°之间，并且绕在转轴200上进行弯曲的部分弯曲部和绕在转轴200上进行弯曲的延长部140的部分的弯曲的角度之和为180°，此时与延长部140中对应的填充层40的一部分绕转轴200进行了弯曲，而另一部分则不需要弯曲，因此填充层40可以分为第一区域41和第二区域42，第一区域41靠近显示层10的末端需要绕转轴进行弯曲，因此第一区域41具有较小的刚度以便于弯曲，而第二区域42远离显示层10的末端而不必进行弯曲，因此第二区域42可以具有较大的刚度。在一些实施例中，填充层40可以仅包括第一区域41，即当填充层40绕转轴200进行弯曲时，填充层40的末端(即 填充层40远离显示层10的一端)位于转轴200的最下方的位置A处。
在一些实施例中，转轴200可以便于柔性显示面板100的弯曲部120绕转轴200进行弯曲，并且当弯曲部120从收纳区域退出运动到柔性显示面板100的正面，使得弯曲部120可以被用户观察到，弯曲部120上的显示区域101可以进行图像显示，转轴200还可以对位于柔性显示面板100的正面的弯曲部120进行支撑，保证弯曲部120上的显示区域进行图像显示时的具有较平坦的显示面。在一些实施例中，运动机构可以是直线运动机构。在一些实施例中，直线运动机构可以包括丝杠螺母机构、曲柄滑块机构、凸轮机构、齿轮齿条机构、带传动机构、链传动机构、直线导轨机构等，或其任意组合。在一些实施例中，运动机构可以采用电机驱动、气缸驱动、液压驱动等方式来驱动，这样可以对运动机构的运动实现精确掌控，从而可以准确控制柔性显示面板100的延长端在运动机构的带动下沿第一方向运动的距离。
在一些实施例中，柔性显示面板100的延长端与运动机构的连接方式可以是固定连接，也可以是可拆卸连接。在一些实施例中，固定连接的方式可以包括但不限于一体成型、胶粘、销钉连接等。在一些实施例中，可拆卸连接的方式可以包括但不限于卡扣、插拔链接等。在一些实施例中，柔性显示面板100的延长端与运动机构的连接强度可以影响柔性显示面板100中上层组20和/或下层组30沿第一方向相对显示层10的延伸的长度。在一些实施例中，柔性显示面板100的延长端与运动机构的连接强度越大，柔性显示面板100中上层组20和/或下层组30沿第一方向相对显示层10的延伸(额外)的长度越小，延长部140沿第一方向相对显示层10的长度就越小。
在一些实施例中，运动机构可以仅与柔性显示面板100的延长端的连接，来带动柔性显示面板100的弯曲部120沿第一方向经过转轴200的运动，非弯曲部110可以在弯曲部120的带动下沿第一方向的相反方向进行运动。
在一些实施例中，运动机构还可以与非弯曲部110连接，非弯曲部110可以同时在弯曲部120和运动机构的带动下沿第一方向进行运动。在一些实施例中，如图11所示，运动机构可以包括第一齿条51、齿轮52以及第二齿条53，其中，第一齿条51与柔性显示面板100的延长端连接，第二齿条53与柔性显示面板100的非弯曲部110的下表面连接，而齿轮52位于第一齿条51与第二齿条53之间并分别与第一齿条51和第二齿条53啮合。在一些实施例中，可以通过驱动第一齿条51沿第一方向进行运动，第一齿条51可以带动柔性显示面板100的延长端沿第一方向运动，使得柔性显示面板100的弯曲部120可以沿第一方向经过转轴200运动进入收纳区域内或从收纳区域内退 出，并且第一齿条51的运动可以通过齿轮52传递给第二齿条53，使得第二齿条53可以沿与第一齿条51运动方向相反的方向进行运动，使得柔性显示面板100的非弯曲部110可以沿第一方向的相反方向运动。在一些实施例中，可以驱动齿轮52进行顺时针或逆时针转动，当齿轮52转动时，第一齿条51和第二齿条53可以同时沿第一方向进行相互运动。在一些实施例中，弯曲部120可以在第一齿条51的带动下沿第一方向经过转轴200进入到收纳区域内或从收纳区域内退出，非弯曲部110可以在第二齿条53的带动下沿与第一齿条51运动方向相反的方向进行运动。在一些实施例中，可以驱动第二齿条53沿第一方向运动，使得第二齿条53可以带动柔性显示面板100的非弯曲部110沿第一方向进行运动，并且第二齿条53的运动可以通过齿轮52传递到第一齿条51，使得第一齿条51可以沿与第二齿条53运动方向相反的方向进行运动，从而带动弯曲部120沿与第二齿条53运动方向相反的方向经过转轴200运动进入到收纳区域内或从收纳区域内退出。通过采用上述实施例中的运动机构，可以使得柔性显示面板100在进行滑移运动时非弯曲部110与弯曲部120之间不会具有较大的拉扯力，避免柔性显示面板100因拉扯力过大而发生变形甚至受损。
在一些实施例中，为了使柔性显示面板100在进行滑移运动时非弯曲部110与弯曲部120之间不会具有较大的拉扯力，运动机构还可以采用同步带传动机构。在一些实施例中，如图12所示，同步带传动机构可以包括传动带和两个大小相同的带轮61。柔性显示面板100的延长端可以与传动带的下部63连接，而柔性显示面板100的非弯曲部110的下表面可以与传动带的上部62连接，通过驱动带轮61转动，传动带的上部62可以带动非弯曲部110沿第一方向进行运动，传动带的下部63可以带动柔性显示面板100的弯曲部120沿与非弯曲部运动方向相反的方向经过转轴200运动进入到收纳区域内或从收纳内退出。
在一些实施例中，当柔性显示面板100的延长部140仅设置在柔性显示面板100沿第一方向的一端时，即柔性显示面板100的延长端仅是柔性显示面板100沿第一方向的其中一端，此时与柔性显示面板100的延长端连接的运动机构仅包括一个，在运动机构的带动下，柔性显示面板100的一端(延长端)沿第一方向经过转轴200运动进入到收纳区域内或从收纳区域内退出，从而实现柔性显示面板100的收起或展开。在一些实施例中，柔线显示设备100不是延长端的一端可以与终端设备的外壳连接。在一些实施例中，柔线显示设备100不是延长端的一端可以与柔性电路板连接。
在一些实施例中，如图13所示，延长部140可以设置在柔性显示面板100沿第 一方向的两端，即柔性显示面板100沿第一方向的两端均为柔性显示面板100的延长端，与柔性显示面板100的延长端连接的运动机构可以包括两个运动机构，对应地，柔性显示面板100可以包括两个弯曲部120及对应的两个转轴200，两个运动机构可以分别带动柔性显示面板100的两端(两端均为延长端)沿第一方向进行运动，使得柔性显示面板100的两个弯曲部可120以分别经过对应的两个转轴200运动进入到收纳区域内或从收纳区域内退出，其中，对应的两个转轴200平行于第一方向的方向运动相应的距离，当柔性显示面板100的两个延长端沿第一方向相互靠近或远离时，对应的两个弯曲部120以及两个转轴200沿第一方向(或其平行方向)相互靠近或远离，便能实现柔性显示面板100的收起或展开。在这种情况下，柔性显示面板100收起时可以占据较小的空间。在一些实施例中，当柔性显示面板100沿第一方向的两端均为柔性显示面板100的延长端时，柔性显示面板100的延长端的其中一个可以与终端设备的运动机构连接，而另一个则可以不与运动机构连接。在一些实施例中，柔性显示面板100不与运动机构连接的一端可以与终端设备的外壳连接。在一些实施例中，柔性显示面板100不与运动机构连接的一端可以与柔性电路板连接。
在一些实施例中，柔性显示面板100的延长端(延长部140)可以用于与转轴200连接，转轴转动可以带动柔性显示面板100绕转轴200进行卷曲运动。在一些实施例中，当转轴绕其轴线沿顺时针或逆时针方向进行旋转时，转轴200可以带动柔性显示面板100的延长端开始绕转轴200进行弯曲，柔性显示面板的弯曲部120逐渐卷绕在转轴200上，实现柔性显示面板100的收起，柔性显示面板100可以占据较小的空间；而当转轴200绕其线沿与显示柔性显示面板100收起的转轴200的转动方向相反的方向进行转动时，卷绕在转轴200上的弯曲部120可以绕转轴200进行展开，以进行图像显示。在一些实施例中，转轴200不仅可以实现柔性显示面板100的弯曲部120绕转轴进行弯曲，还可以使弯曲部120卷绕在其上面，将柔性显示面板100收起，而且当弯曲部120绕转轴200展开，弯曲部120上的部分或全部位于柔性显示面板100的正面时，转轴200还可以对位于柔性显示面板100的正面的弯曲部120支撑，以保证位于柔性显示面板100的正面的弯曲部120上的显示区域101具有较平坦的显示面。在本实施例中，柔性显示面板100可以仅包括弯曲部120。在一些实施例中，柔性显示面板可以包括弯曲部120和非弯曲部110。在一些实施例中，柔性显示面板100可以包括驱动转轴200转动的驱动装置。在一些实施例中，驱动装置可以包括但不限于弹簧驱动机构、马达驱动机构、棘轮驱动机构、齿轮驱动机构等。
在一些实施例中，柔性显示面板100的延长端与转轴200的连接方式可以是固定连接，也可以是可拆卸连接。在一些实施例中，固定连接的方式可以包括但不限于一体成型、胶粘、销钉连接等。在一些实施例中，可拆卸连接的方式可以包括但不限于卡扣、插拔链接等。
在一些实施例中，当柔性显示面板100的延长部140仅设置在柔性显示面板沿第一方向的一端时，即柔性显示面板100的延长端仅是柔性显示面板100沿第一方向的其中一端时，柔性显示面板可以仅与一个转轴连接，柔性显示面板可以是单轴卷曲形式。在一些实施例中，如图14所示，柔性显示面板100设有延长部140的一端与转轴200连接，转轴200绕其轴线转动可以带动柔性显示面板设置有延长部140的一端开始绕转轴200进行弯曲，使得柔性显示面板的弯曲部120可以逐渐卷绕在转轴200上，实现柔性显示面板100的收起，而当转轴200沿与柔性显示面板收起的转轴200的转动方向的相反方向进行转动时，卷绕在转轴200上的弯曲部120的部分或全部可以绕转轴200进行展开，弯曲部120上的显示区域101可以作为扩展显示区域与非弯曲部110上的主显示区域共同向用户呈现图像，从而增大柔性显示面板100的显示面积。在一些实施例中，柔性显示面板100未设有延长部140的一端可以与终端设备的壳体连接。在一些实施例中，柔性显示面板100未设有延长部140的一端可以与柔性电路板连接。
当柔性显示面板100的延长部140设置在柔性显示面板100沿第一方向的两端时，即柔性显示面板100沿第一方向的两端均为柔性显示面板100的延长端时，柔性显示面板100可以为双轴卷曲形式。在一些实施例中，如图15所示，柔性显示面板100可以包括第一转轴210第二转轴220，柔性显示面板100设有延长部140的两端可以分别与第一转轴210和第二转轴220连接。其中，第一转轴210和第二转轴220的轴线均与第一方向基本垂直或与第二方向基本平行，第一转轴210和第二转轴220分别对应有第一弯曲部121和第二弯曲部122。在一些实施例中，当需要将柔性显示面板100收起时，可以转动第一转轴210和第二转轴220，第一转轴210和第二转轴220的转动方向相反，第一弯曲部121和/或第二弯曲部122可以在第一转轴210的带动下绕第一转轴进行弯曲并逐渐卷绕在第一转轴210上，第二弯曲部122和/或第一弯曲部121可以在第二转轴210的带动下绕第二转轴220进行弯曲并逐渐卷绕在第二转轴210上，并且在柔性显示面板100收起的过程中，第一转轴210和第二转轴220可以沿第一方向运动并且相互靠近，当柔性显示面板完全收起时，第一转轴210和第二转轴220沿第一方向的距离最小，柔性显示面板100的形状可以为“8”字形状。在一些实施例中，第一转轴 210和第二转轴220的转动方向可以相同，当柔性显示面板100完全收起时，第一转轴210和第二转轴220沿第一方向的距离最小，柔性显示面板100的形状为如图16所示的“双筒望远镜”形状。在一些实施例中，当柔性显示面板100需要展开时，第一转轴210和第二转轴220转动，其中，第一转轴210和第二转轴220的转动方向可以相同或相反，使得第一弯曲部121和第二弯曲部122可以分别在第一转轴210和第二转轴的220带动下绕第一转轴210和第二转轴220展开，第一弯曲部121和第二弯曲部122的部分或全部可以进行图像显示，其中，第一转轴210和第二转轴210可以共同地对第一弯曲部121和第二弯曲部122进行图像显示的部分或全部进行支撑，使得第一弯曲部121和第二弯曲部122进行图像显示的部分或全部显示区域101具有较平坦的显示面，从而保证柔性显示面板100的显示效果不会受到影响。
在一些实施例中，柔性显示面板100也可以没有转轴200，可以通过手动辅助的方式实现柔性显示面板100的卷曲运动，使用者可以直接将柔性显示面板100卷起，使柔性显示面板自身卷绕起来，不再卷绕在转轴上。此时，可以从柔性显示面板100的任意一端向另一端卷起，也可以从两端向中间卷起。在一些实施例中，在柔性显示面板100没有转轴并且需要手动辅助的方式进行卷曲运动的情况下，柔性显示面板100沿第一方向的任意一端可以不再设有延长部140，也能在最大程度上利用柔性显示面板100的显示面积。
在一些实施例中，本申请还提供了一种具有柔性显示面板的显示设备1000，显示设备1000可以包括终端设备，以及与所述终端设备连接的柔性显示面板。其中，所述柔性显示面板可以是本说明书以上部分一个或多个实施例中的任一个柔性显示面板100。在一些实施例中，柔性显示面板100可以与所述终端设备固定连接，由终端设备给所述柔性显示面板提供电源和输出显示信号。在一些实施例中，柔性显示面板100也可以与所述终端设备可拆卸连接。当显示设备1000需要进行图像显示时，可以将柔性显示面板100与所述终端设备连接，以进行图像显示；当显示设备1000不需要进行图像显示时，可以将柔性显示面板100与所述终端设备分离，以将柔性显示面板100进行收纳。其中，所述柔性显示面板100与所述终端设备可拆卸连接的方式可以包括可插拔式有线连接。在一些实施例中，所述柔性显示面板100与所述终端设备之间的连接方式还可以包括无线连接，避免了柔性显示面板100与所述终端设备之间的连接线带来的困扰。在一些实施例中，终端设备还可以直接集成在柔性显示面板100内。其中，所述终端设备，包括但不限于手机、电脑、电视机、键盘、电子书以及车载显示终端等。
在一些实施例中，柔性显示面板100可以与终端设备的运动机构连接，运动机构可以带动柔性显示面板100相对终端设备进行滑移运动。在一些实施例中，显示设备1000可以包括转轴200，柔性显示面板100可以与转轴200连接，转轴200转动可以带动柔性显示面板100在终端设备上进行卷曲运动。关于柔性显示面板进行卷曲运动和滑移运动的更多描述可以在本申请其他地方(例如，图10、图11和图14、图15及其相关描述)找到。
本申请所披露的一个或多个实施例可能带来的有益效果包括但不限于：(1)柔性显示面板在弯曲方向上具有较小的刚度，便于柔性显示面板进行弯曲；(2)柔性显示面板沿弯曲方向(第一方向或第二方向)的至少一端设有延长部与转轴或运动机构连接，使得柔性显示面板在完全展开时，柔性显示面板的显示层可以全部或最大程度地显示区域位于柔性显示面板的正面，使得柔性显示面板的显示区域能够最大程度地被向用户呈现图像，从而在最大程度上利用柔性显示面板的显示面积；(3)柔性显示面板在非弯曲方向具有较大的刚度，可以在柔性显示面板展开时保持柔性显示面板的显示面平坦；(4)当柔性显示面板设置有延长部时，缓冲层弥补延长部的厚度，使得柔性显示面板的整体厚度一致，并且缓冲层还可以防止柔性显示面板运动时显示层的末端发生劈裂，而且柔性显示面板在运动时，缓冲层可以进行蠕动来补偿显示层发生的形变，避免由于显示层的变形而导致柔性显示面板的显示效果不佳。
以上所述仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (18)

  1. 一种柔性显示面板，其特征在于，所述柔性显示面板包括显示层和层组；
    所述层组包括至少一层；
    所述层组中至少一层沿第一方向的长度大于所述显示层沿第一方向的长度。
  2. 根据权利要求1所述的柔性显示面板，其特征在于，所述层组包括位于所述显示层上面的上层组和位于所述显示层下面的下层组；
    所述上层组包括至少一层；
    所述下层组包括至少一层；
    所述上层组和/或下层组中的至少一层沿第一方向的长度大于所述显示层沿第一方向的长度。
  3. 根据权利要求1所述的柔性显示面板，其特征在于，所述层组仅包括位于所述显示层下面的下层组；
    所述下层组包括至少一层；
    所述下层组中的至少一层沿第一方向的长度大于所述显示层沿第一方向的长度。
  4. 根据权利要求2所述的柔性显示面板，其特征在于，所述上层组包括盖板层，所述盖板层沿所述第一方向的长度大于所述显示层的长度。
  5. 根据权利要求2或4所述的柔性显示面板，其特征在于，所述下层组包括支撑层，所述支撑层沿所述第一方向的长度大于所述显示层的长度。
  6. 根据权利要求5所述的柔性显示面板，其特征在于，所述柔性显示面板还包括填充层，所述填充层位于所述盖板层相对所述显示层的延长部的下面，和/或位于所述支撑层相对所述显示层的延长部的上面。
  7. 根据权利要求6所述的柔性显示面板，其特征在于，所述盖板层的延长部和/或所述支撑层的延长部与所述填充层的厚度之和与所述柔性显示面板上未延长区域的厚度相同。
  8. 根据权利要求2所述的柔性显示面板，其特征在于，所述上层组和/或所述下层组中的至少一层沿第一方向与所述显示层的长度差值的范围包括0.5cm～5cm。
  9. 根据权利要求2所述的柔性显示面板，其特征在于，所述上层组和/或所述下层组中的至少一层沿第一方向与所述显示层的长度差值的范围包括1cm～4cm。
  10. 根据权利要求2所述的柔性显示面板，其特征在于，所述上层组和/或所述下层组中的若干层沿第一方向相对所述显示层的延伸的长度相同。
  11. 根据权利要求2所述的柔性显示面板，其特征在于，所述上层组和/或所述下层组相对所述显示层的延长部设置在所述显示层沿第一方向的其中一端。
  12. 根据权利要求2所述的柔性显示面板，其特征在于，所述上层组和/或所述下层组相对所述显示层的延长部设置在所述显示层沿第一方向的两端。
  13. 根据权利要求2所述的柔性显示面板，其特征在于，所述柔性显示面板还包括柔性电路板，所述柔性电路板连接于所述显示层上远离被所述上层组和/或所述下层组延长的一端。
  14. 根据权利要求1所述的柔性显示面板，其特征在于，所述柔性显示面板沿第一方向的延长端用于与终端设备连接。
  15. 根据权利要求1所述的柔性显示面板，其特征在于，所述柔性显示面板沿第一方向的延长端用于与转轴连接。
  16. 一种显示设备，其特征在于，包括权利要求1～15中任一所述的柔性显示面板，以及与所述柔性显示面板连接的终端设备。
  17. 根据权利要求16所述的显示设备，其特征在于，所述柔性显示面板相对所述终端设备进行滑移运动。
  18. 根据权利要求16所述的显示设备，其特征在于，所述柔性显示面板在所述终 端设备上围绕转轴作卷曲运动。
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