WO2021233367A1 - 一种显示面板和显示装置 - Google Patents

一种显示面板和显示装置 Download PDF

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Publication number
WO2021233367A1
WO2021233367A1 PCT/CN2021/094794 CN2021094794W WO2021233367A1 WO 2021233367 A1 WO2021233367 A1 WO 2021233367A1 CN 2021094794 W CN2021094794 W CN 2021094794W WO 2021233367 A1 WO2021233367 A1 WO 2021233367A1
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WIPO (PCT)
Prior art keywords
layer
display panel
elastic recovery
display
polarizer
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PCT/CN2021/094794
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English (en)
French (fr)
Inventor
廖峰
胡云松
李立胜
祝明
张林川
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to KR1020227044008A priority Critical patent/KR20230011382A/ko
Priority to EP21809150.2A priority patent/EP4141852A4/en
Priority to JP2022570720A priority patent/JP7523588B2/ja
Publication of WO2021233367A1 publication Critical patent/WO2021233367A1/zh
Priority to US18/056,466 priority patent/US20230080831A1/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • 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
    • G06F1/1633—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
    • G06F1/1641—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being formed by a plurality of foldable display components
    • 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
    • G06F1/1643—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being associated to a digitizer, e.g. laptops that can be used as penpads
    • 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
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels

Definitions

  • This application belongs to the field of display technology, and more specifically relates to a display panel and a display device.
  • the foldable display device has a large-sized display screen in the unfolded state, and a smaller display screen in the folded state, can be adapted to different application scenarios, and can obtain a smaller volume, which is convenient to carry.
  • the foldable display device brings multi-functional application scenarios and visual impact to users.
  • the display screen will go through many times of folding and flattening.
  • the bending part of the display screen has the risk of film peeling or cracking due to multiple bending. In the flat state, the film layer of the bending part There is also a problem that the arching cannot be completely flattened.
  • the current display screen also has the problem that the package fails after being impacted and the display is abnormal.
  • the present application provides a display panel and a display device to solve the problems of peeling or cracking of the film layer caused by multiple bending of the display panel, and unrecoverable bending of the bent part when the display panel is flattened, and improve the display panel's performance. Impact resistance.
  • An embodiment of the present application provides a display panel.
  • the display panel includes a display layer, an encapsulation layer, and a functional film layer stacked in sequence, wherein the display layer includes a plurality of light-emitting devices; the functional film layer is located on the side of the encapsulation layer away from the display layer, The functional film layer at least includes an elastic recovery layer; the display panel includes a bendable area, and the elastic recovery layer is located at least in the bendable area.
  • an elastic recovery layer is provided on the encapsulation layer.
  • the elastic recovery layer has a good ability to restore the initial state after deformation.
  • the elastic recovery layer can assist the panel
  • the other film layers in the film recover from bending after bending, reducing the risk of peeling or cracking of the film layer due to multiple bending, and the risk of unrecoverable bending of the bending part in the flat state.
  • the elastic recovery layer has good damping characteristics.
  • the elastic recovery layer can absorb the impact energy, protect the packaging layer above the light-emitting device, avoid packaging failures and cause display abnormalities, thereby improving the display The impact resistance of the panel.
  • the functional film layer further includes a first protective layer, and the first protective layer is located on the side of the elastic recovery layer away from the encapsulation layer.
  • the first protective layer is used to protect the display panel on the side of the display surface of the display panel.
  • the functional film layer further includes a polarizer, and the polarizer is located on the side of the elastic recovery layer away from the first protective layer. Or the polarizer is located between the elastic recovery layer and the first protective layer.
  • the polarizer can reduce the reflection of the ambient light of the display panel to improve the display effect.
  • the functional film layer further includes an adhesive layer, and two adjacent film layers in the functional film layer are bonded by the adhesive layer.
  • the elastic recovery layer in the functional film layer is in direct contact with at least one adjacent film layer as a whole.
  • the elastic recovery layer and the polarizer in the functional film layer are integrated.
  • the elastic recovery layer and the first protective layer in the functional film layer are integrated.
  • the first protective layer, the elastic recovery layer, and the polarizer that are sequentially stacked in the functional film layer are all integrated.
  • the display panel further includes a touch structure layer, and the touch structure layer is located on a side of the packaging layer away from the display layer.
  • the touch structure layer and the packaging layer are integrated.
  • the arrangement of the glue layer between the touch structure layer and the encapsulation layer is reduced, which is beneficial to the reduction of the thickness of the display panel.
  • the display panel further includes a touch structure layer and a color film layer, the touch structure layer is in direct contact with the encapsulation layer, and the color film layer is in direct contact with the touch structure layer; the encapsulation layer, the touch structure layer, and the color film layer are stacked in sequence.
  • the film layers are all integrated.
  • the color film layer includes a color filter unit and a light-shielding part. In a direction perpendicular to the display panel, the color filter unit overlaps the light-emitting device, and the light-shielding part is located between two adjacent color filter units.
  • the glue layer used in the process of bonding the touch structure layer and the encapsulation layer, and the glue layer used in the process of bonding the color film layer and the touch structure layer are reduced, and the use of the glue layer in the display panel structure is reduced, which is beneficial to the display Thinning of the panel thickness.
  • the color film layer is arranged on the touch structure layer. The color film layer can reduce the reflection of the light-emitting devices and metal traces on the ambient light, and at the same time can reduce the reflection of the ambient light by the touch structure layer, and improve the display of the display panel. Effect.
  • the thickness of the elastic recovery layer is d, where 20 ⁇ m ⁇ d ⁇ 200 ⁇ m.
  • the transmittance of the elastic recovery layer to visible light is greater than 90%.
  • the elastic recovery rate of the elastic recovery layer is greater than 95%.
  • An embodiment of the present application also provides a display device, including the display panel provided by any embodiment of the present application.
  • the display panel and display device provided by the present application have the following beneficial effects: an elastic recovery layer is provided on the encapsulation layer, and the elastic recovery layer has a better ability to restore the initial state after deformation, and the display panel changes from a bent state to a flattened state.
  • the elastic recovery layer can assist other film layers in the panel to restore the arch after bending, reducing the risk of peeling or cracking of the film layer due to multiple bending, and the risk of unrecoverable arching of the bending part in the flat state.
  • the elastic recovery layer has good damping characteristics.
  • the elastic recovery layer can absorb the impact energy, protect the packaging layer above the light-emitting device, avoid packaging failures and cause display abnormalities, thereby improving the display The impact resistance of the panel.
  • FIG. 1 is a schematic diagram of a flat state of a display panel provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of a bent state of a display panel provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of a film structure of a bending area of a display panel provided by an embodiment of the application;
  • FIG. 4 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 11 is a schematic partial top view of a touch structure layer in an embodiment of the application.
  • FIG. 12 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 13 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 14 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • FIG. 15 is a schematic diagram of a display device provided by an embodiment of the application.
  • the embodiments of the present application provide a display panel and a display device.
  • An elastic recovery layer is provided on the packaging layer in the display panel.
  • the elastic recovery layer is bent along with the module structure during bending.
  • the elastic recovery layer can assist the arching recovery of other film layers in the bending part after bending, thereby reducing the risk of peeling or cracking of the film layer due to multiple bendings, and the risk that the arching of the bending part cannot be recovered in the flat state.
  • the elastic recovery layer has good damping characteristics.
  • the elastic recovery layer can absorb the impact energy, protect the packaging layer above the light-emitting device, avoid packaging failures and cause display abnormalities, thereby improving the display The impact resistance of the panel.
  • the elastic recovery layer can be bonded and bonded to the adjacent film layer through an adhesive layer; or, when the elastic recovery layer is in direct contact with other film layers, the elastic recovery layer is made into an integrated composite film, and then Laminate with other film structures of the display panel to reduce the use of glue layers in the display panel.
  • the display panel provided by the embodiment of the present application includes a bendable area, and the bendable area can be bent and deformed.
  • the display panel includes a folded state and an unfolded state. When in the folded state, the bendable area undergoes bending deformation; when in the unfolded state, the bendable area recovers deformation, and the display panel returns to a flat state.
  • FIG. 1 is a schematic diagram of a flat state of a display panel provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of a bent state of the display panel provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of a film structure of a bending area of a display panel provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the bendable area 10 of the display panel is shown in FIG. 1, as shown in FIG. Stacked structure from top to bottom.
  • the bendable area 10 is located in the central area of the display panel.
  • the bendable area 10 deviates from the center area of the display panel, and when the display panel is folded in pairs, there is a certain dislocation in the upper and lower laminated structure.
  • FIG. 1 only illustrates that the display panel includes a bendable area 10, and the present application does not limit the number of bendable areas in the display panel.
  • the display panel may also include two or more bendable areas. Taking the display panel including two bendable areas as an example, when the two bendable areas are both bent and deformed in the folded state, the display The panel can form a three-layer laminated structure.
  • the display panel includes: an array substrate 101, a display layer 102, and an encapsulation layer 103 stacked in sequence.
  • the display layer 102 includes a plurality of light-emitting devices 20.
  • the figure also shows that the light-emitting device 20 includes an anode 21, The light-emitting layer 22 and the cathode 23, wherein the anode 21 is a reflective anode, and the cathode 23 is a transparent cathode.
  • the light-emitting layer 22 can emit light directly to the cathode 23, and this part of the light is directly emitted from the cathode 23; in addition, the light-emitting layer 22 is also The light emitted toward the anode 21 is emitted from the cathode 23 after being reflected by the anode 21. Therefore, the light-emitting surface of the display layer 102 is the surface on the side of the cathode 23, and the light is emitted from the display layer 102 to the encapsulation layer 103. Then, it penetrates the other structural layers of the display panel and shoots out the display panel.
  • the array substrate 101 includes a plurality of thin film transistors 11 and a plurality of signal lines (not shown).
  • the drain (not shown) of the thin film transistor 11 is electrically connected to the anode 21 of the light emitting device 20.
  • the thin film transistor 11 in the figure only has a top gate structure. Give a gesture.
  • the encapsulation layer 103 is used to encapsulate and protect the light-emitting device 20 to isolate water and oxygen and ensure the service life of the light-emitting device 20.
  • the encapsulation layer 103 includes organic encapsulation layers and inorganic encapsulation layers that are alternately stacked. In the figure, only the encapsulation layer 103 includes two inorganic encapsulation layers 31 and one organic encapsulation layer 32 for illustration.
  • the display panel also includes a functional film layer 104.
  • the functional film layer 104 is located on the side of the encapsulation layer 103 away from the display layer 102.
  • the functional film layer 104 includes at least an elastic recovery layer 41.
  • the ability of the state can be used to assist the arching recovery of other films after bending.
  • the elastic recovery layer 41 is at least located in the bendable area 10, that is, the elastic recovery layer 41 may be provided only in the bendable area 10, or a whole layer of elastic recovery layer 41 may be provided. As shown in FIG. 4, the bendable area 10 and the elastic recovery layer 41 provided on the entire surface are illustrated.
  • the entire surface of the elastic recovery layer 104 can be beneficial to the flatness of the display panel structure.
  • a substrate When manufacturing a display panel, a substrate is first provided, and an array substrate, a display layer, and an encapsulation layer are sequentially fabricated on the substrate to form a display module.
  • the structural layers directly formed on the substrate may be collectively referred to as the display module.
  • the functional film layer is located on the display module, and the functional film layer includes a polarizer, a protective layer, a glue layer and other structural layers.
  • the functional film layer is bonded to the display module through the adhesive layer.
  • the functional film layer further includes a first protective layer 42 and a polarizer 43.
  • the first protective layer 42 is located on the side of the elastic recovery layer 41 away from the encapsulation layer 103, and the polarizer 43 is located on the elastic recovery layer. The side of the recovery layer 41 away from the first protective layer 42.
  • the first protective layer 42 may be an ultra-thin glass layer or a polyimide film, and the first protective layer 42 is used to protect other film layers in the display panel.
  • the polarizer 43 can reduce the reflection of the ambient light of the display panel to improve the display effect.
  • a hard cover layer is further provided on the first protective layer 42, the hardness of the hard cover layer is greater than the hardness of the first protective layer, and the hard cover layer can further protect other film layers in the display panel.
  • a polarizer, protective layer, adhesive layer and other film layers need to be arranged on the encapsulation layer.
  • the elastic recovery ability of different film layers is different, resulting in some film layers. Unable to return to the original flat state, but the bending part arches, the film peels off and even breaks.
  • an elastic recovery layer is provided on the encapsulation layer. The elastic recovery layer has a good ability to restore the initial state after deformation.
  • the elastic recovery layer can assist the panel
  • the other film layers in the film recover from bending after bending, reducing the risk of peeling or cracking of the film layer due to multiple bending, and the risk of unrecoverable bending of the bending part in the flat state.
  • the elastic recovery layer has good damping characteristics.
  • the elastic recovery layer can absorb the impact energy, protect the packaging layer above the light-emitting device, avoid packaging failures and cause display abnormalities, thereby improving the display The impact resistance of the panel.
  • the transmittance of the elastic recovery layer to visible light is greater than 90%, and the haze of the elastic recovery layer is less than 1.2%, so as to ensure that the elastic recovery layer has high transparency.
  • the elastic recovery layer is arranged on the side of the light emitting surface of the display layer. High transparency can avoid the influence on the display effect.
  • the elastic recovery rate of the elastic recovery layer is greater than 95%, and the elastic recovery rate is the proportion of the recoverable part in the tensile deformation. For example, when the elastic recovery layer is pre-stretched by 20%, its elastic recovery rate is greater than 95% .
  • the elastic recovery rate of the elastic recovery layer is relatively large, which can ensure that the elastic recovery layer still has a very good recovery ability after bending after the display panel is bent and used for many times.
  • the elastic recovery force of the elastic recovery layer is F, where 10MJ ⁇ m-3 ⁇ F ⁇ 50MJ ⁇ m-3.
  • the elastic restoring force is the restoring force after deformation due to external force.
  • the elastic recovery force of the elastic recovery layer meets a certain range to ensure that the elastic recovery layer can generate sufficient recovery force when the display panel transitions from the bent state to the flattened state, so as to ensure that the elastic recovery layer can assist other films. Restoration of the arch after the layer is bent.
  • the elastic modulus of the elastic recovery layer is 50 to 800 MPa.
  • the elastic modulus is used to measure the degree of difficulty of elastic deformation of the material.
  • the elastic modulus of the elastic recovery layer meets a certain range to ensure that the elastic recovery layer has a certain degree of flexibility and can bend with the display panel, and at the same time has a certain rigidity , In the flat state, it can assist other film layers to restore the arch after bending.
  • the material for the elastic recovery layer in the embodiments of the present application includes a high molecular polymer material, which may be a thermoplastic elastic material or a thermosetting elastic material.
  • Thermoplastic elastic materials such as: thermoplastic polyurethane, polyolefin elastomer, polyether ester elastomer, etc.; thermosetting elastic materials such as: ethylene-vinyl acetate copolymer, silicone elastomer, sulfonated polyethersulfone, polyamide (nylon) Wait.
  • the material of the elastic recovery layer includes thermoplastic polyurethane.
  • Thermoplastic polyurethane material has a wide range of hardness. It has high elasticity in the range of Shore A 60 ⁇ Shore D 80, and is flexible in a wide temperature range from -40 to 120°C. It also has good weather resistance, High energy ray resistance, high tensile strength, high elongation, low long-term compression and low permanent deformation.
  • the elastic recovery layer made of thermoplastic polyurethane material can effectively assist other film layers in the panel to recover from arching after bending, and at the same time improve the impact resistance of the display panel.
  • the hardness can be adjusted by controlling the ratio of the hard segment and the soft segment during the production of the polymer polymer material, where the hard segment is a relatively rigid molecular segment in the polymer polymer material, such as aromatic hydrocarbons; the soft segment is flexible Larger molecular segments, such as aliphatic hydrocarbons.
  • the material of the elastic recovery layer including thermoplastic polyurethane as an example, in order to have the characteristics of high light transmittance, non-yellowing of ultraviolet rays, high toughness and high elastic recovery rate in a high hardness state, an aliphatic system (such as Macromolecular diols, polyisocyanates and chain extenders) to increase the proportion of soft segments.
  • the thickness of the elastic recovery layer 41 is d, where 20 ⁇ m ⁇ d ⁇ 200 ⁇ m.
  • the thickness of the elastic recovery layer meets a certain range to ensure that the elastic recovery layer has good elastic recovery ability to assist other film layers to recover from arching after bending. At the same time, its damping characteristics can protect the packaging layer when it is impacted by external forces. , To avoid display abnormalities caused by package failure.
  • This application also provides a manufacturing method of the elastic recovery layer, and the specific process includes:
  • Step S101 Put a predetermined amount of elastomer pellets into the calender according to the sample preparation requirements, wherein the key physical properties of the materials need to be clarified before feeding, including hot melt temperature, film forming temperature and pretreatment conditions.
  • Step S102 drying the elastomer pellets to remove moisture to ensure the quality of film formation in the later stage.
  • the drying temperature and time can be set according to the specific material composition of the elastomer pellets.
  • Step S103 heating and melting the elastomer particles in stages to obtain a slurry. Since the elastomer material is a high molecular polymer material, and in order to meet the high light transmittance and high elastic recovery rate under the higher hardness state, its molecular structure needs to be specially designed, and the melting range temperature range is large. The temperature rise can ensure that the slurry in a uniform molten state is obtained.
  • Step S104 using a die with a specific slit width to spray the slurry in a hot melt state.
  • the extrusion temperature, extrusion rate and extrusion pressure need to be set according to the characteristics of the elastomer material.
  • Step S105 The slurry in the hot melt state is sprayed from the die head and then cast onto the setting roller, and the setting roller is cooled by water cooling to ensure the setting temperature.
  • the film-forming and setting temperature range is generally between 20°C and 40°C.
  • the above steps S101 to S105 provide a method for manufacturing the elastic recovery layer.
  • the release film on both sides of the elastic recovery layer is removed, and the elastic recovery layer and the structural layer of the display panel are bonded and bonded by a glue layer.
  • the elastic recovery layer is made of one material; in another embodiment, the elastic recovery layer is made of two or more materials.
  • the elastic recovery layer is a one-layer structure made of one material; in another embodiment, the elastic recovery layer is a two-layer structure or a multi-layer structure, wherein the two-layer structure or a multi-layer structure It can also be made of the same material; or different structural layers in the elastic recovery layer are made of different materials.
  • the elastic recovery layer includes a first structure layer, a second structure layer, and a third structure layer stacked in sequence, wherein the adhesion properties of the first structure layer and the third structure layer are greater than the adhesion properties of the second structure layer, and Among the structural layers, the second structural layer has the strongest elastic recovery ability.
  • two or more structural layers with different physical properties are combined to form an elastic recovery layer to ensure that the elastic recovery layer has strong elastic recovery ability and high visible light transmittance, and at the same time can ensure that it is compatible with the display
  • the other film layers of the panel have good bonding reliability.
  • each structure layer can be manufactured with reference to the above-mentioned process from step S101 to step S105.
  • the elastic recovery layer including two structural layers as an example, after the first structural layer is fabricated, the second structural layer is directly fabricated on the first structural layer, and finally an integrated elastic recovery layer is formed. That is to say, a structure formed by a manufacturing process in which adjacent structural layers are in close contact and bonding, and the adjacent structural layers in the integrated elastic recovery layer are in contact with each other and are tightly combined.
  • the elastic recovery layer can also be made into an integrated composite film together with other film layers. Take the first composite film integrated with the elastic recovery layer and the first protective layer as an example.
  • the first protective layer is used as the carrier substrate during production.
  • the elastic recovery layer is fabricated on the first protective layer by using the above-mentioned process from step S101 to step S105, and the elastic recovery layer and the first protective layer are thermally bonded to obtain an integrated first composite film.
  • a release film is laid on the first composite film.
  • the first composite film and the structural layer of the display panel can be bonded and bonded by an adhesive layer.
  • the "integrated elastic recovery layer” and “integrated first composite film” are mentioned above, and “adjacent layers (or structures) are integrated, such as elastic recovery layer and polarized light
  • the sheet is one piece", among which, “one piece” is understood to rely on the production process to make two or three layers of film in sequence, and the layers can be closely contacted and adhered without the use of a glue layer for bonding. structure.
  • the integrated first composite film that is, the elastic recovery layer and the first protective layer are integrated, and the elastic recovery layer and the first protective layer have no glue layer. Reference to this description can be used for understanding when referring to the "integrated” structure in the following specific embodiments.
  • the calendering process is continued to fabricate the polarizer on the elastic recovery layer of the first composite film, and the elastic recovery layer has adhesive properties at a certain temperature.
  • the properties of the polarizer realize the bonding between the polarizer and the elastic recovery layer, thereby forming an integrated second composite film including the first protective layer, the elastic recovery layer and the polarizer.
  • the release film is laid on the second composite film.
  • the second composite film and the structural layer of the display panel can be bonded and bonded by an adhesive layer.
  • Figure 3 illustrates that the functional film layer includes a first protective layer, an elastic recovery layer and a polarizer, and shows that the elastic recovery layer can be located between the first protective layer and the polarizer.
  • the polarizer is located between the first protective layer and the elastic recovery layer, that is, the positions of the elastic recovery layer and the polarizer can be interchanged.
  • the functional film layer includes a first protective layer and an elastic recovery layer, that is, the functional film layer does not include a polarizer.
  • the two adjacent film layers in the functional film layer can be bonded by a glue layer; or the elastic recovery layer and the adjacent film layer directly contact to form an integrated structure, so that the elastic recovery layer and the first protective layer
  • the elastic recovery layer and the first protective layer do not need to be bonded with an adhesive layer.
  • the first protective layer can be used as the carrier substrate during production, and the elastic recovery layer can be directly fabricated on the first protective layer.
  • An integrated composite film is formed on the upper surface, and then the composite film is bonded to other structures of the display panel through an adhesive layer.
  • FIG. 5 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the functional film layer 104 includes an elastic recovery layer 41, a first protection layer 42 and a polarizer 43, wherein the elastic recovery layer 41 is located between the first protection layer 42 and the polarizer 43.
  • the functional film layer 104 also includes at least a first adhesive layer 51 and a second adhesive layer 52.
  • the first protective layer 42 is bonded to the elastic recovery layer 41 through the first adhesive layer 51, and the elastic recovery layer 41 is connected to the polarized light through the second adhesive layer 52.
  • the sheet 43 is bonded.
  • the display panel is also provided with a third adhesive layer 53, and the polarizer 43 is bonded to the underlying module structure through the third adhesive layer 53.
  • the encapsulation layer 103 only the module structure under the polarizer 43 is the encapsulation layer 103 as an example.
  • a third adhesive layer 53 is formed, and then on the third adhesive layer 53 Laminate the polarizer 43; then make a second glue layer 52 on the polarizer 43, and then glue the elastic recovery layer 41 on the second glue layer 52; then make the first glue layer 51 on the elastic recovery layer 41 ,
  • the first protective layer 42 is attached to the first adhesive layer 51.
  • the elastic recovery layer can assist the first protective layer, the polarizer and the adhesive layer in the functional film layer to recover from the arch after bending, preventing the film layer between each film layer from peeling after multiple bending, and is elastic
  • the recovery layer can protect the encapsulation layer when it is impacted by an external force, and avoid display abnormalities caused by encapsulation failure.
  • the elastic recovery layer is located between the first protective layer and the polarizer.
  • the polarizer is located between the first protective layer and the elastic recovery layer in the functional film layer, and the function The two adjacent film layers in the film layer are all bonded by the glue layer, which is not shown in the drawings here.
  • FIG. 6 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the functional film layer includes an elastic recovery layer 41, a first protection layer 42 and a polarizer 43, wherein the first protection layer 42 and the elastic recovery layer 41 are in direct contact, and the first protection layer 42 and the elastic recovery layer 41 are integrated.
  • the polarizer 43 is located on the side of the elastic recovery layer 41 away from the first protective layer 42.
  • the functional film layer further includes a fourth adhesive layer 54, the elastic recovery layer 41 and the polarizer 43 are bonded through the fourth adhesive layer 54, and the polarizer 43 is bonded to the underlying module structure through the fifth adhesive layer 55.
  • the first protective layer and the elastic recovery layer are integrated, that is, there is no glue layer between the first protective layer and the elastic recovery layer, but the production process is dependent on the direct contact and close adhesion between the first protective layer and the elastic recovery layer.
  • the first protective layer and the elastic recovery layer are integrated into the first composite film.
  • the manufacturing method of the integrated first composite film can refer to the above description of the manufacturing process of the elastic recovery layer.
  • the first protective layer is used as the carrier substrate and heat flow can be used.
  • the extension process directly manufactures the material of the elastic recovery layer on the first protective layer to form an integrated first composite film.
  • the first protective layer and the elastic recovery layer are in direct contact, which reduces the use of the glue layer in the display panel structure, which is beneficial to the reduction of the thickness of the display panel.
  • FIG. 6 only the module structure under the polarizer 43 is the encapsulation layer 103 as an example for description.
  • the fifth adhesive layer 55 is produced, and then the fifth adhesive layer A polarizer 43 is attached to 55, and then a fourth adhesive layer 54 is formed on the polarizer 43, and the first composite film is attached to the fourth adhesive layer.
  • FIG. 7 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the functional film layer includes a first protective layer 42, an elastic recovery layer 41, and a polarizer 43 stacked in sequence.
  • the first protective layer 42 and the elastic recovery layer 41 are in direct contact, and the elastic recovery layer 41 and the polarizer 43 are in direct contact.
  • a protective layer 42, elastic recovery layer 41 and polarizer 43 are all integrated.
  • the polarizer 43 is bonded to the underlying module structure through the sixth adhesive layer 56.
  • the first protective layer, the elastic recovery layer, and the second composite film of the polarizer are integrated, that is, the first protective layer, the elastic recovery layer, and the two adjacent film layers of the polarizer are stacked in sequence.
  • No glue layer is required.
  • the manufacturing method of the integrated second composite film please refer to the above description on the manufacturing process of the elastic recovery layer.
  • the material for the elastic recovery layer can be directly manufactured on the first protective layer by using a hot casting process.
  • the polarizer is made on the elastic recovery layer by a calendering process, and the adhesive property of the elastic recovery layer at a certain temperature is used to achieve the adhesion between the polarizer and the elastic recovery layer, and an integrated second composite is obtained.
  • the film can further reduce the arrangement of the glue layer in the display panel structure, which is beneficial to further reduce the thickness of the display panel.
  • the module structure under the polarizer 43 is the encapsulation layer 103 as an example for description.
  • the sixth adhesive layer 56 is formed, and then the sixth adhesive layer A second composite film is attached to 56.
  • FIG. 8 is a schematic diagram of another film structure of the display panel provided by the embodiment of the application.
  • the functional film layer includes a first protective layer 42, an elastic recovery layer 41, and a polarizer 43 stacked in sequence.
  • the elastic recovery layer 41 and the polarizer 43 are integrated, and the elastic recovery layer 41 and the polarizer 43 are in direct contact.
  • the elastic recovery layer 41 and the first protective layer 42 are bonded by an adhesive layer 60.
  • the elastic recovery layer and the polarizer are integrated, and the elastic recovery layer and the polarizer constitute an integrated third composite film.
  • the polarizer is used as the carrier substrate, and the elastic recovery layer is directly fabricated on the polarizer to form a third composite film.
  • the elastic recovery layer and the polarizer do not need a glue layer but are closely bonded to form a whole through direct contact. Structure.
  • FIG. 8 only the module structure under the polarizer 43 is the encapsulation layer 103 as an example for illustration.
  • the sixth adhesive layer 56 is formed, and then the sixth adhesive layer An integrated third composite film is pasted on 56, then an adhesive layer 60 is fabricated on the integrated third composite film, and the first protective layer 42 is pasted on the adhesive layer 60.
  • the elastic recovery layer and the polarizer are integrated, the polarizer is located between the elastic recovery layer and the first protective layer, and the first protective layer and the polarizer are bonded by the adhesive layer.
  • Schematic drawing. The manufacturing process can also be understood with reference to the embodiment in FIG. 8, which will not be repeated here.
  • FIG. 9 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the functional film layer 104 includes a first protective layer 42 and an elastic recovery layer 41, and the first protective layer 42 and the elastic recovery layer 41 are in direct contact.
  • the first protective layer and the elastic recovery layer are integrated, that is, the first protective layer and the elastic recovery layer directly contact to form an integrated first composite film.
  • the first protective layer and the elastic recovery layer are integrated, which reduces the use of the glue layer in the display panel structure, which is beneficial to the reduction of the thickness of the display panel.
  • the display panel also includes a color film layer 106, which includes a color filter unit 61 and a light shielding portion 62.
  • the color filter unit 61 overlaps the light emitting device 20, and the light shielding portion 62 is located opposite to each other. Between two adjacent color filter units 61.
  • the color film layer 106 and the elastic recovery layer 41 are bonded and adhered through the seventh adhesive layer 57.
  • the color filter unit includes a red filter unit, a blue filter unit and a green filter unit.
  • the light-emitting device includes a red light-emitting device capable of emitting red light, a green light-emitting device capable of emitting green light, and a blue light-emitting device capable of emitting blue light.
  • the red filter unit and the red light-emitting device overlap, and the green filter unit and the green light-emitting device are overlapped.
  • the devices overlap, and the blue filter unit and the blue light-emitting device overlap.
  • the color filter unit can transmit visible light in a predetermined wavelength range.
  • the red filter unit can transmit red light.
  • the plain color filter unit can prevent the transmission of light in the wavelength range other than the predetermined wavelength range, and can reduce The ambient light ingests the light in the display panel, thereby reducing the reflection of the display panel on the ambient light, and when the light penetrating a color filter unit of a certain color is reflected by the light emitting device that overlaps the color filter unit, it is directed toward
  • the color filter unit of another color can not penetrate the color filter unit of another color and emits out of the display panel, the reflection of the ambient light by the display panel can also be reduced, and the display effect of the display panel can be improved.
  • the color film layer is fabricated in the display panel to reduce the reflection of the ambient light by the display panel and save the bonding process of the polarizer.
  • the functional film layer includes a first protective layer and an elastic recovery layer
  • the display panel includes a color film layer.
  • first protective layer and the elastic recovery layer are made of glue. Layer bonding. The drawings are not shown here.
  • the display panel provided by the embodiment of the present application further includes a touch structure layer.
  • FIG. 10 is a schematic diagram of another film structure of the display panel provided by the embodiment of the present application.
  • FIG. 11 is a schematic partial top view of a touch structure layer in an embodiment of the application. As shown in FIG. 10, the touch structure layer 107 is located on the side of the encapsulation layer 103 away from the display layer 102. The figure shows that the touch structure layer 107 is bonded to the encapsulation layer 103 through the eighth adhesive layer 58. The touch structure layer 107 is bonded to the functional film layer 104 through the ninth adhesive layer 59.
  • FIG. 11 illustrates the structure of a touch structure layer.
  • the touch structure layer includes a plurality of first touch electrodes 71 and a plurality of second touch electrodes 72, and the touch structure layer includes a plurality of electrode rows and a plurality of electrodes. List.
  • the plurality of first touch electrodes 71 are arranged in electrode rows along the first direction x, and two adjacent first touch electrodes 71 in one electrode row are electrically connected.
  • the plurality of second touch electrodes 72 are arranged in an electrode column along the second direction y, and two adjacent second touch electrodes 72 in one electrode column are electrically connected.
  • the touch structure layer is bonded and fixed to the adjacent film layer by the adhesive layer. In FIG.
  • the functional film layer includes a first protective layer, an elastic recovery layer, and a polarizer stacked in sequence as an example.
  • the elastic recovery layer can assist the first protective layer and the polarizer in the functional film layer to recover from arching after bending.
  • the elastic recovery layer can protect the encapsulation layer when it is impacted by an external force, so as to avoid the display abnormality caused by the failure of the encapsulation.
  • the touch electrodes in the touch structure layer and the connecting wires connecting the touch electrodes are made of metal materials, and the touch structure layer is arranged under the polarizer.
  • the polarizer can reduce the environmental impact of light-emitting devices and metal traces. The reflection of light can also reduce the reflection of ambient light from the touch structure layer and improve the display effect of the display panel.
  • FIG. 12 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the touch structure layer 107 and the encapsulation layer 103 are in direct contact, and the touch structure layer 107 and the encapsulation layer 103 are integrated.
  • the touch structure layer 107 is directly fabricated on the packaging layer 103 to form an integrated structure, which reduces the gap between the touch structure layer 107 and the packaging layer 103.
  • the arrangement of the adhesive layer is beneficial to the reduction of the thickness of the display panel.
  • the functional film layers in the above-mentioned embodiments of FIGS. 10 and 12 are all illustrated by including a first protective layer, an elastic recovery layer, and a polarizer stacked in sequence.
  • the functional film layers in the above-mentioned embodiments of FIGS. 5 to 8 can be applied to In the above-mentioned embodiments of Fig. 10 and Fig. 12, the drawings are not shown here.
  • FIG. 13 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the display panel also includes a touch structure layer 107 and a color film layer 106.
  • the color film layer is located on the side of the touch structure layer 107 away from the encapsulation layer 103.
  • the touch structure layer 107 is in direct contact with the encapsulation layer 103, and the color film layer 106 It is in direct contact with the touch structure layer 107, that is, the encapsulation layer 103, the touch structure layer 107, and the color film layer 106 are all integrated; wherein, the color film layer 106 includes a color filter unit 61 and a light shielding portion 62, In the direction e of the display panel, the color filter unit 61 overlaps the light emitting device 20, and the shading portion 62 is located between two adjacent color filter units 61.
  • the functional film layer 104 includes a first protective layer 42 and an elastic recovery layer 41, and the elastic recovery layer 41 is bonded to the color film layer 106 through a seventh adhesive layer 57.
  • the touch structure layer 107 is directly fabricated on the packaging layer 103, and then the color film layer 106 is fabricated on the touch structure layer 107, the packaging layer 103, the touch structure layer 107 It forms an integrated structure with the color film layer 106, and there is no need to set a glue layer between the layers for bonding, thereby reducing the glue layer used in the touch structure layer and the encapsulation layer bonding process, as well as the color film layer and the touch
  • the adhesive layer used in the structural layer bonding process reduces the use of the adhesive layer in the display panel structure, which is beneficial to the reduction of the thickness of the display panel.
  • the color film layer is arranged on the touch structure layer.
  • the color film layer can reduce the reflection of the light-emitting devices and metal traces on the ambient light, and at the same time can reduce the reflection of the ambient light by the touch structure layer, and improve the display of the display panel. Effect.
  • FIG. 14 is a schematic diagram of another film structure of a display panel provided by an embodiment of the application.
  • the display panel further includes a second protective layer 91, which is located on On the side of the first protective layer 42 away from the elastic recovery layer 41, a hard cover layer 92 is further provided on the second protective layer 91.
  • the hardness of the hard cover layer 92 is greater than that of the first protective layer 42, and the hard cover layer
  • the hardness of 92 is greater than the hardness of the second protective layer 91, and the hard cover layer 92 can further protect the film layer inside the display panel.
  • a lower protective layer 108 is further provided on the side of the array substrate 101 far away from the display layer 102.
  • the lower protective layer 108 includes a base layer 81 and a support layer 82, wherein between the base layer 81 and the support layer 82 is provided The adhesive layer 83 and the lower protective layer 108 are bonded to the array substrate 101 through the adhesive layer 84.
  • the lower protective layer is used to protect the internal module structure of the display panel on the back side of the display panel.
  • FIG. 15 is a schematic diagram of a display device provided in an embodiment of the present application.
  • the display device includes a display panel 100 provided in any embodiment of the present application.
  • the display device shown in FIG. 15 is only for schematic illustration, and the display device may be, for example, a vehicle-mounted display device, a mobile phone, a tablet computer, a notebook computer, an electronic paper book, a television, or a flexible wearable product.

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Abstract

一种显示面板（100）和显示装置。显示面板（100）包括依次堆叠的显示层（102）、封装层（103）和功能膜层（104），其中，显示层（102）包括多个发光器件（20）；功能膜层（104）位于封装层（103）远离显示层（102）的一侧，功能膜层（104）至少包括一弹性恢复层（41），显示面板（100）包括可弯折区（10），弹性恢复层（41）至少位于可弯折区（10）。弹性恢复层（41）能够辅助面板中的其他膜层进行弯折后拱起的恢复，降低多次弯折导致膜层剥离或破裂、以及展平状态时弯折部位拱起无法恢复的风险。同时弹性恢复层（41）能够在显示面板（100）承受冲击力时对发光器件（20）之上的封装层（103）起到保护作用，避免封装失效导致显示异常，从而提升显示面板（100）的抗冲击性能。

Description

一种显示面板和显示装置
本申请要求于2020年5月21日提交中国专利局、申请号为202010435518.3、申请名称为“一种显示面板和显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于显示技术领域，更具体的涉及一种显示面板和显示装置。
背景技术
随着显示技术的发展，手机、平板电脑等便携式显示装置成为人们生活中不可或缺的产品。大尺寸的显示屏能够提升用户的视觉体验，深受用户的喜欢，但是大尺寸显示屏也会导致显示装置不便于携带，由此出现了可折叠显示装置。可折叠显示装置在展开状态时具有大尺寸的显示屏幕，在折叠状态时具有较小的显示屏幕，能够适用不同的应用场景，并且能够获得较小的体积，便于携带。可折叠显示装置给用户带来了多功能应用场景和视觉冲击力。在实际应用中，显示屏会经过多次的折叠和展平的状态，显示屏的弯折部位由于多次弯折存在膜层剥离或者破裂的风险，在展平状态时弯折部位的膜层也存在拱起无法完全展平的问题。另外，目前显示屏也存在受冲击后封装失效导致显示异常的问题。
发明内容
有鉴于此，本申请提供一种显示面板和显示装置，以解决显示面板多次弯折导致膜层剥离或破裂、以及展平状态时弯折部位拱起无法恢复的问题，并且提升显示面板的抗冲击能力。
本申请实施例提供一种显示面板，显示面板包括：依次堆叠的显示层、封装层和功能膜层，其中，显示层包括多个发光器件；功能膜层位于封装层远离显示层的一侧，功能膜层至少包括一弹性恢复层；显示面板包括可弯折区，弹性恢复层至少位于可弯折区。
本申请实施例中，在封装层之上设置弹性恢复层，弹性恢复层具有较好的形变后恢复初始状态的能力，在显示面板由弯折状态到展平状态时，弹性恢复层能够辅助面板中的其他膜层进行弯折后拱起的恢复，降低多次弯折导致膜层剥离或破裂、以及展平状态时弯折部位拱起无法恢复的风险。同时弹性恢复层具有很好的阻尼特性，在显示面板承受冲击力时，弹性恢复层能够吸收冲击能，对发光器件之上的封装层起到保护作用，避免封装失效导致显示异常，从而提升显示面板的抗冲击性能。
具体的，功能膜层还包括第一保护层，第一保护层位于弹性恢复层的远离封装层的一侧。其中，第一保护层用于在显示面板的显示面一侧对显示面板进行保护。
具体的，功能膜层还包括偏光片，偏光片位于弹性恢复层的远离第一保护层的一侧。或者偏光片位于弹性恢复层和第一保护层之间。偏光片能够减少显示面板对环境光的反射，以提升显示效果。
可选的，功能膜层还包括胶层，功能膜层内相邻的两个膜层均通过胶层粘结。可选的，功能膜层中弹性恢复层和与其相邻的之少一个膜层直接接触为一体的。
在一种实施例中，功能膜层中弹性恢复层和偏光片是一体的。
在另一种实施例中，功能膜层中弹性恢复层和第一保护层是一体的。
在另一种实施例中，功能膜层中依次堆叠的第一保护层、弹性恢复层以及偏光片均是一体的。
具体的，显示面板还包括触控结构层，触控结构层位于封装层的远离显示层的一侧。
可选的，触控结构层与封装层是一体的。减少了触控结构层和封装层之间的胶层设置，有利于显示面板厚度的减薄。
具体的，显示面板还包括触控结构层和彩膜层，触控结构层与封装层直接接触，且彩膜层与触控结构层直接接触；依次堆叠的封装层、触控结构层以及彩膜层均是一体的。其中，彩膜层包括彩色滤光单元和遮光部，在垂直于显示面板方向上，彩色滤光单元与发光器件交叠，遮光部位于相邻的两个彩色滤光单元之间。减少了触控结构层和封装层贴合工艺中使用的胶层、以及彩膜层与触控结构层贴合工艺中使用的胶层，减少了显示面板结构中胶层的使用，有利于显示面板厚度的减薄。另外，彩膜层设置在触控结构层之上，彩膜层能够减少发光器件以及金属走线对环境光的反射，同时也能够减少触控结构层对环境光的反射，提升显示面板的显示效果。
具体的，弹性恢复层的厚度为d，其中，20μm≤d≤200μm。
具体的，弹性恢复层对可见光的透光率大于90％。
具体的，弹性恢复层的弹性回复率大于95％。
本申请实施例还提供一种显示装置，包括本申请任意实施例提供的显示面板。
本申请提供的显示面板和显示装置，具有如下有益效果：在封装层之上设置弹性恢复层，弹性恢复层具有较好的形变后恢复初始状态的能力，在显示面板由弯折状态到展平状态时，弹性恢复层能够辅助面板中的其他膜层进行弯折后拱起的恢复，降低多次弯折导致膜层剥离或破裂、以及展平状态时弯折部位拱起无法恢复的风险。同时弹性恢复层具有很好的阻尼特性，在显示面板承受冲击力时，弹性恢复层能够吸收冲击能，对发光器件之上的封装层起到保护作用，避免封装失效导致显示异常，从而提升显示面板的抗冲击性能。
附图说明
图1为本申请实施例提供的显示面板展平状态示意图；
图2为本申请实施例提供的显示面板的弯折状态示意图；
图3为本申请实施例提供的显示面板的弯折区的一种膜层结构示意图；
图4为本申请实施例提供的显示面板的另一种膜层结构示意图；
图5为本申请实施例提供的显示面板的另一种膜层结构示意图；
图6为本申请实施例提供的显示面板的另一种膜层结构示意图；
图7为本申请实施例提供的显示面板的另一种膜层结构示意图；
图8为本申请实施例提供的显示面板的另一种膜层结构示意图；
图9为本申请实施例提供的显示面板的另一种膜层结构示意图；
图10为本申请实施例提供的显示面板的另一种膜层结构示意图；
图11为本申请实施例中触控结构层的一种局部俯视示意图；
图12为本申请实施例提供的显示面板的另一种膜层结构示意图；
图13为本申请实施例提供的显示面板的另一种膜层结构示意图；
图14为本申请实施例提供的显示面板的另一种膜层结构示意图；
图15为本申请实施例提供的显示装置示意图。
具体实施方式
基于现有技术中存在问题，本申请实施例提供一种显示面板和显示装置，在显示面板中封装层之上设置弹性恢复层，在弯折时弹性恢复层随模组结构进行弯折，在展平时弹性恢复层能够辅助弯折部位的其他膜层弯折后拱起恢复，从而降低多次弯折导致膜层剥离或破裂、以及展平状态时弯折部位拱起无法恢复的风险。同时弹性恢复层具有很好的阻尼特性，在显示面板承受冲击力时，弹性恢复层能够吸收冲击能，对发光器件之上的封装层起到保护作用，避免封装失效导致显示异常，从而提升显示面板的抗冲击性能。在显示面板的膜层结构中，弹性恢复层可以和与其相邻的膜层通过胶层粘结贴合；或者，在制作时弹性恢复层与其他膜层直接接触制作成一体的复合膜，再与显示面板的其他膜层结构进行贴合，以减少显示面板中胶层的使用。下面将以具体实施例对本申请进行说明。
本申请实施例提供的显示面板包括可弯折区，可弯折区能够发生弯折产生形变。显示面板包括折叠状态和展平状态，在折叠状态时可弯折区发生弯折形变；在展平状态时可弯折区恢复形变，显示面板恢复为平整状态。图1为本申请实施例提供的显示面板展平状态示意图，图2为本申请实施例提供的显示面板的弯折状态示意图。图3为本申请实施例提供的显示面板的弯折区的一种膜层结构示意图。图4为本申请实施例提供的显示面板的另一种膜层结构示意图。
如图1中示出了显示面板的可弯折区10，如图2示意的一种弯折状态，在折叠状态下，可弯折区10发生形变，相当于显示面板发生对折弯折，形成上下叠层结构。在一种实施例中，可弯折区10位于显示面板的中心区域，显示面板发生对折弯折时，上下叠层结构相互平齐。可选的，可弯折区10偏离显示面板的中心区域，则显示面板发生对折弯折时，上下叠层结构存在一定的位错。需要说明的是，图1仅以显示面板包括一个可弯折区10进行示意，本申请对于显示面板中可弯折区的个数不做限定。可选的，显示面板也可以包括两个或者多个可弯折区，以显示面板包括两个可弯折区为例，在折叠状态下两个可弯折区均发生弯折形变时，显示面板可以形成三层的叠层结构。
如图3所示，显示面板包括：依次堆叠的阵列基板101、显示层102和封装层103，其中，显示层102包括多个发光器件20，图中还示出了发光器件20包括阳极21、发光层22和阴极23，其中，阳极21为反射阳极，阴极23为透明阴极，发光层22能够 发出直接射向阴极23的光线，则该部分光线直接由阴极23射出；另外发光层22也会发出射向阳极21的光线，该部分光线经阳极21的反射作用之后再由阴极23射出，所以显示层102的出光面为阴极23一侧的表面，光线由显示层102射向封装层103，然后再穿透显示面板的其他结构层射出显示面板。阵列基板101包括多个薄膜晶体管11以及多条信号线(未示出)，薄膜晶体管11的漏极(未标示)与发光器件20的阳极21电连接，图中薄膜晶体管11仅以顶栅结构进行示意。封装层103用于对发光器件20进行封装保护，以隔绝水氧，保证发光器件20的使用寿命。可选的，封装层103中包括交替堆叠的有机封装层和无机封装层。图中仅以封装层103包括两个无机封装层31和一个有机封装层32进行示意。
显示面板还包括功能膜层104，功能膜层104位于封装层103远离显示层102的一侧，功能膜层104至少包括一弹性恢复层41，弹性恢复层41具有较好的弯折后恢复初始状态的能力，能够用于辅助其他膜层弯折后拱起恢复。本发明实施例中弹性恢复层41至少位于可弯折区10，也即，可以仅在可弯折区10内设置有弹性恢复层41，或者也可以是设置一整层的弹性恢复层41。如图4所示，示意出了可弯折区10，以及整面设置的弹性恢复层41，弹性恢复层104整面设置能够有利于显示面板结构的平整性。
在显示面板制作时，首先提供衬底，在衬底上依次制作阵列基板、显示层和封装层等形成显示模组，本申请可以将在衬底上直接形成的结构层统称为显示模组。功能膜层位于显示模组之上，功能膜层包括偏光片、保护层、胶层等结构层。功能膜层通过胶层与显示模组进行贴合。
继续参考图3所示，示意出功能膜层还包括第一保护层42和偏光片43，其中，第一保护层42位于弹性恢复层41的远离封装层103的一侧，偏光片43位于弹性恢复层41的远离第一保护层42的一侧。其中，第一保护层42可以为超薄玻璃层或者聚酰亚胺薄膜，第一保护层42用于对显示面板内的其他膜层进行保护。偏光片43能够减少显示面板对环境光的反射，以提升显示效果。可选的，在第一保护层42之上还设置有硬罩层，硬罩层的硬度大于第一保护层的硬度，硬罩层能够进一步对显示面板内的其他膜层起到保护作用。
在显示面板结构中封装层之上还需要设置偏光片、保护层、胶层等膜层，显示面板由弯折到展平的过程中，各不同膜层的弹性恢复能力不同，导致部分膜层无法恢复到最初的平整状态，而出现弯折部位拱起、膜层剥离甚至破裂的现象。本申请实施例中，在封装层之上设置弹性恢复层，弹性恢复层具有较好的形变后恢复初始状态的能力，在显示面板由弯折状态到展平状态时，弹性恢复层能够辅助面板中的其他膜层进行弯折后拱起的恢复，降低多次弯折导致膜层剥离或破裂、以及展平状态时弯折部位拱起无法恢复的风险。同时弹性恢复层具有很好的阻尼特性，在显示面板承受冲击力时，弹性恢复层能够吸收冲击能，对发光器件之上的封装层起到保护作用，避免封装失效导致显示异常，从而提升显示面板的抗冲击性能。
具体的，弹性恢复层对可见光的透光率大于90％，弹性恢复层的雾度小于1.2％，从而确保弹性恢复层具有高透明度，将弹性恢复层设置在显示层的出光面一侧，其高透明度能够避免对显示效果的影响。
具体的，弹性恢复层的弹性回复率大于95％，弹性回复率为在拉伸形变中可回复部分所占的比例，比如弹性恢复层在预拉伸20％时，其弹性回复率大于95％。弹性恢复层的弹性回复率较大，能够确保在显示面板多次弯折使用后，弹性恢复层仍然具有非常好的弯折后恢复能力。
弹性恢复层的弹性回复力为F，其中，10MJ·m-3≤F≤50MJ·m-3。弹性回复力为因外力产生形变后的恢复力。本申请中弹性恢复层的弹性回复力满足一定大小范围，确保在显示面板由弯折状态到展平状态过渡时，弹性恢复层能够产生足够大的回复力，从而确保弹性恢复层能够辅助其他膜层进行弯折后拱起的恢复。
弹性恢复层的弹性模量为50～800MPa。弹性模量用于衡量材料产生弹性变形难易程度，本申请中弹性恢复层的弹性模量满足一定的范围，保证弹性恢复层具有一定的柔性能够随显示面板发生弯折，同时具有一定的刚性，在展平状态时能够辅助其他膜层进行弯折后拱起的恢复。
本申请实施例中弹性恢复层的制作材料包括高分子聚合材料，可以是热塑性弹性材料或者热固性弹性材料。热塑性弹性材料比如：热塑性聚氨酯、聚烯类弹性体、聚醚酯类弹性体等；热固性弹性材料比如：乙烯-醋酸乙烯共聚物、有机硅弹性体、磺化聚醚砜、聚酰胺(尼龙)等。
在一种实施例中，弹性恢复层的制作材料包括热塑性聚氨酯。热塑性聚氨酯材料的硬度范围广，其在Shore A 60～Shore D 80范围内都具有高弹性，并且在很宽的温度范围内-40-120℃都具有柔性，同时还具有良好的耐天候性、耐高能射线性能，拉伸强度高，伸长率大，长期压缩永久变形率低等优点。采用热塑性聚氨酯材料制作的弹性恢复层能够有效辅助面板中的其他膜层进行弯折后拱起的恢复，同时提升显示面板的抗冲击性能。
可选的，在高分子聚合材料制作时通过控制硬段和软段的比例来调节硬度，其中，硬段为高分子聚合材料中刚性较大的分子链段，比如芳香烃；软段为柔性较大的分子链段，比如脂肪烃。以弹性恢复层的制作材料包括热塑性聚氨酯为例，为了在高硬度状态下还具有高透光率，紫外线不黄化，高韧性以及高弹性恢复率的特点，制作时可以采用脂肪族体系(比如大分子二醇、多异氰酸酯以及扩链剂)来增加软段的比例。
具体的，如图3所示的，弹性恢复层41的厚度为d，其中，20μm≤d≤200μm。弹性恢复层的厚度满足一定范围，保证弹性恢复层具有较好的弹性恢复能力，以辅助其他膜层进行弯折后拱起的恢复，同时其阻尼特性能够在受到外力冲击时对封装层进行保护，避免封装失效导致显示异常。本申请还提供了弹性恢复层的制作方法，具体的工艺过程包括：
步骤S101：根据制样需求将预定量的弹性体颗粒料投入压延机中，其中，在投料之前需要明确物料的关键物性表，包括热熔温度，成膜温度以及预处理条件等。
步骤S102：对弹性体颗粒料进行烘干处理，除去水分，以保证后期成膜质量。再烘干处理是可以根据弹性体颗粒料的具体材料成分设定烘干温度和时间。
步骤S103：分阶段升温熔融弹性体颗粒得到浆料。由于弹性体材料属于高分子聚合材料，且为了满足较高硬度状态下仍具有高透光率以及高的弹性恢复率，其分子结构需经过特殊设计，熔程温度区间较大，通过分区域阶段升温能够保证得到均匀熔融 状态的浆料。
步骤S104：采用特定狭缝宽度的模头喷射热熔状态的浆料。其中，需要根据弹性体材料特性来设定挤出温度，挤出速率以及挤出压力。
步骤S105：热熔状态浆料从模头喷射出来后流延到定型辊上，定型辊采用水冷降温确保定型温度。其中，成膜定型温度区间一般在20℃～40℃。
上述步骤S101至步骤S105提供了弹性恢复层的制作方法。当单独制作弹性恢复层膜层时，可以首先在承载基板上铺设离型膜，然后在离型膜之上采用上述方法制作弹性恢复层，然后再在弹性恢复层之上制作离型膜，在面板制作中，将弹性恢复层两侧的离型膜去除，采用胶层将弹性恢复层与显示面板的结构层进行粘结贴合即可。
在一种实施例中，弹性恢复层采用一种材料制作；在另一种实施例中，弹性恢复层采用两种或者两种以上的材料制作。
在一种实施例中，弹性恢复层为一种材料制作的一层结构；在另一种实施例中，弹性恢复层为两层结构或者多层结构，其中，两层结构或者多层结构结构也可以采用同一材料制作；或者弹性恢复层中不同的结构层采用不同的材料制作。比如弹性恢复层包括依次堆叠的第一结构层、第二结构层和第三结构层，其中，第一结构层和第三结构层的粘结性能均大于第二结构层的粘结性能，而结构层中第二结构层的弹性恢复能力最强。也就是说，将具有不同物理性质的两个或者多个结构层配合形成弹性恢复层，以保证弹性恢复层具有较强的弹性恢复能力、较高的可见光透过率，同时能够保证其与显示面板其他膜层具有很好的粘结可靠性。
当弹性恢复层包括两层结构或者多层结构时，每一个结构层均可以参考上述步骤S101至步骤S105的工艺来制作。以弹性恢复层包括两层结构层为例，制作完第一层结构层之后，在第一层结构层之上直接制作第二层结构层，最终形成一体的弹性恢复层。也就是说依赖制作工艺形成的相邻结构层之间紧密接触结合的结构，该一体的弹性恢复层中相邻的结构层之间相互接触且紧密结合。
弹性恢复层也可以与其他膜层一起制作成一体的复合膜，以弹性恢复层和第一保护层构成一体的第一复合膜为例，在制作时以第一保护层为承载基板，在第一保护层之上采用上述步骤S101至步骤S105的工艺将弹性恢复层制作在第一保护层之上，弹性恢复层和第一保护层通过热粘结得到一体的第一复合膜。然后在第一复合膜之上铺设离型膜，在显示面板制作中，将离型膜去除之后，采用胶层将第一复合膜与显示面板的结构层进行粘结贴合即可。
本申请中，上文讲到“一体的弹性恢复层”、“一体的第一复合膜”、以及下文中还会涉及“相邻的层(或者结构)为一体的，比如弹性恢复层和偏光片是一体的”，其中，“一体的”理解为依赖制作工艺将两层或者三层膜层依次制作形成的，层与层之间不需要使用胶层进行粘结也能够紧密接触贴合的结构。比如，一体的第一复合膜也即弹性恢复层和第一保护层为一体的，且弹性恢复层和第一保护层没有胶层。在下述具体的实施例中涉及到“一体的”结构时均可参照此说明进行理解。
在另一种实施例中，在得到一体的第一复合膜之后，继续采用压延工艺将偏光片制作在第一复合膜的弹性恢复层之上，依靠弹性恢复层在一定温度下具有粘结性能的性质实现偏光片与弹性恢复层之间的粘结，从而形成包括第一保护层、弹性恢复层和 偏光片的一体的第二复合膜。然后在第二复合膜之上铺设离型膜，在显示面板制作中，将离型膜去除之后，采用胶层将第二复合膜与显示面板的结构层进行粘结贴合即可。
图3以功能膜层包括第一保护层、弹性恢复层和偏光片进行示意，并示出了弹性恢复层可以位于第一保护层和偏光片之间的情况，在另一种实施例中，偏光片位于第一保护层和弹性恢复层之间，也即弹性恢复层和偏光片的位置可以互换。在另一种实施例中，功能膜层包括第一保护层和弹性恢复层，也即功能膜层中不包括偏光片。另外，在功能膜层中相邻的两个膜层之间可以通过胶层粘结；或者弹性恢复层和与其相邻的膜层直接接触形成一体的结构，以弹性恢复层和第一保护层是一体的为例，弹性恢复层和第一保护层之间不需要设置胶层进行粘结，在制作时可以以第一保护层为承载基板，将弹性恢复层直接制作在第一保护层之上形成一体的复合膜，然后将该复合膜通过胶层与显示面板的其他结构进行贴合。下面实施例将对功能膜层的具体结构进行详细的举例说明。
在一种实施例中，功能膜层内相邻的两个膜层均通过胶层粘结。如图5所示，图5为本申请实施例提供的显示面板的另一种膜层结构示意图。功能膜层104包括弹性恢复层41、第一保护层42和偏光片43，其中，弹性恢复层41位于第一保护层42和偏光片43之间。功能膜层104至少还包括第一胶层51和第二胶层52，第一保护层42通过第一胶层51与弹性恢复层41粘结，弹性恢复层41通过第二胶层52与偏光片43粘结。显示面板中还设置有第三胶层53，偏光片43通过第三胶层53与下方的模组结构粘结。图5中仅以偏光片43下方的模组结构为封装层103为例，显示面板制作时，在完成封装层103的工艺之后，制作第三胶层53，然后在第三胶层53之上贴合偏光片43；然后在偏光片43之上制作第二胶层52，然后在第二胶层52之上贴合弹性恢复层41；然后在弹性恢复层41之上制作第一胶层51，在第一胶层51之上贴合第一保护层42。该实施方式中，弹性恢复层能够辅助功能膜层中的第一保护层、偏光片以及胶层进行弯折后拱起的恢复，防止多次弯折后各膜层间膜层剥离，并且弹性恢复层能够在受到外力冲击时对封装层进行保护，避免封装失效导致显示异常。
图5中仅以弹性恢复层位于第一保护层和偏光片之间进行示意，在另一种实施例中，在功能膜层中偏光片位于第一保护层和弹性恢复层之间，且功能膜层中相邻的两个膜层均通过胶层粘结，在此不再附图示意。
在另一种实施例中，功能膜层中弹性恢复层和与其相邻的至少一个膜层是一体的。如图6所示，图6为本申请实施例提供的显示面板的另一种膜层结构示意图。功能膜层包括弹性恢复层41、第一保护层42和偏光片43，其中，第一保护层42和弹性恢复层41直接接触，第一保护层42和弹性恢复层41是一体的。偏光片43位于弹性恢复层41的远离第一保护层42的一侧。功能膜层还包括第四胶层54，在弹性恢复层41和偏光片43通过第四胶层54粘结，偏光片43通过第五胶层55与下方的模组结构粘结。第一保护层和弹性恢复层是一体的，也即第一保护层和弹性恢复层之间不设置胶层，而是依赖制作工艺形成第一保护层和弹性恢复层之间直接接触且紧密粘结的一体的结构。第一保护层和弹性恢复层为一体的第一复合膜，一体的第一复合膜的制作方法可以参考上述关于弹性恢复层的制作工艺的说明，以第一保护层为承载基板，可以采用热流延工艺将弹性恢复层的制作材料直接制作在第一保护层之上形成一体的第一 复合膜。该实施方式中，第一保护层和弹性恢复层直接接触，减少了显示面板结构中胶层的使用，有利于显示面板厚度的减薄。图6中仅以偏光片43下方的模组结构为封装层103为例进行说明，在显示面板制作时，在完成封装层103的工艺之后，制作第五胶层55，然后在第五胶层55之上贴合偏光片43，然后在偏光片43之上制作第四胶层54，在第四胶层之上贴合第一复合膜。
在另一种实施例中，功能膜层中弹性恢复层和与其相邻的两个膜层均直接接触。如图7所示，图7为本申请实施例提供的显示面板的另一种膜层结构示意图。功能膜层包括依次堆叠的第一保护层42、弹性恢复层41和偏光片43，其中，第一保护层42和弹性恢复层41直接接触，且弹性恢复层41和偏光片43直接接触，第一保护层42、弹性恢复层41以及偏光片43均是一体的。偏光片43通过第六胶层56与下方的模组结构粘结。该实施方式中第一保护层、弹性恢复层和偏光片为一体的第二复合膜，也即依次堆叠的第一保护层、弹性恢复层以及偏光片中相邻的两个膜层之间均不需要设置胶层。一体的第二复合膜的制作方法可以参考上述关于弹性恢复层的制作工艺的说明，以第一保护层为承载基板，可以采用热流延工艺将弹性恢复层的制作材料直接制作在第一保护层之上，然后采用压延工艺在弹性恢复层之上制作偏光片，依靠弹性恢复层在一定温度下具有粘结性能的性质实现偏光片与弹性恢复层之间的粘结，得到一体的第二复合膜，能够进一步减少显示面板结构中胶层的设置，有利于显示面板厚度的进一步减薄。图7中仅以偏光片43下方的模组结构为封装层103为例进行说明，在显示面板制作时，在完成封装层103的工艺之后，制作第六胶层56，然后在第六胶层56之上贴合一体的第二复合膜。
在另一种实施例中，如图8所示，图8为本申请实施例提供的显示面板的另一种膜层结构示意图。功能膜层包括依次堆叠的第一保护层42、弹性恢复层41和偏光片43，其中，弹性恢复层41和偏光片43是一体的，弹性恢复层41和偏光片43直接接触，弹性恢复层41和第一保护层42通过胶层60粘结。该实施方式中，弹性恢复层和偏光片是一体的，弹性恢复层和偏光片构成一体的第三复合膜。在制作时，以偏光片为承载基板，将弹性恢复层直接制作在偏光片之上形成第三复合膜，弹性恢复层和偏光片之间不需要胶层而是通过直接接触紧密粘结形成一体的结构。图8中仅以偏光片43下方的模组结构为封装层103为例进行说明，在显示面板制作时，在完成封装层103的工艺之后，制作第六胶层56，然后在第六胶层56之上贴合一体的第三复合膜，然后在一体的第三复合膜之上制作胶层60，在胶层60之上贴合第一保护层42。
在另一种实施例中，弹性恢复层和偏光片是一体的，偏光片位于弹性恢复层和第一保护层之间，且第一保护层和偏光片通过胶层粘结，在此不再附图示意。对于制作过程也可以参照图8实施例进行理解，在此不再赘述。
在另一种实施例中，图9为本申请实施例提供的显示面板的另一种膜层结构示意图。如图9所示，功能膜层104包括第一保护层42和弹性恢复层41，第一保护层42和弹性恢复层41直接接触。第一保护层和弹性恢复层是一体的，也即第一保护层和弹性恢复层直接接触构成一体的第一复合膜，对于一体的第一复合膜的制作方法参照上述实施例中的说明，在此不再赘述。该实施方式中，第一保护层和弹性恢复层是一体的，减少了显示面板结构中胶层的使用，有利于显示面板厚度的减薄。显示面板还包 括彩膜层106，彩膜层106包括彩色滤光单元61和遮光部62，在垂直于显示面板方向e上，彩色滤光单元61与发光器件20交叠，遮光部62位于相邻的两个彩色滤光单元61之间。彩膜层106与弹性恢复层41通过第七胶层57粘结贴合。其中，彩色滤光单元包括红色滤光单元、蓝色滤光单元和绿色滤光单元。发光器件包括能够发出红光的红色发光器件、能够发出绿光的绿色发光器件和能够发出蓝光的蓝色发光器件，其中，红色滤光单元和红色发光器件交叠，绿色滤光单元和绿色发光器件交叠，蓝色滤光单元和蓝色发光器件交叠。彩色滤光单元可以透过预定波长范围的可见光，比如红色滤光单元可以透光红光，也就素彩色滤光单元能够防止除预定波长范围以外的其余波长范围的光的透过，能够减少环境光摄入显示面板内的光亮，从而减少显示面板对环境光的反射，而且当穿透某一颜色彩色滤光单元的光线被与该彩色滤光单元交叠的发光器件反射之后，射向另一颜色的彩色滤光单元时，不能够穿透该另一颜色的彩色滤光单元而射出显示面板，从而也能够减少显示面板对环境光的反射，提升显示面板的显示效果。该实施方式中，在显示面板中制作彩膜层以减少显示面板对环境光的反射，节省了偏光片的贴合工艺。
在另一种实施例中，功能膜层包括第一保护层和弹性恢复层，且显示面板中包括彩膜层，与图9对应实施例不同的是，第一保护层和弹性恢复层通过胶层粘结。在此不再附图示意。
本申请实施例提供的显示面板中还包括触控结构层，图10为本申请实施例提供的显示面板的另一种膜层结构示意图。图11为本申请实施例中触控结构层的一种局部俯视示意图。如图10所示，触控结构层107位于封装层103的远离显示层102的一侧。图中示意触控结构层107通过第八胶层58与封装层103粘结贴合。触控结构层107通过第九胶层59与功能膜层104粘结贴合。图11示意出了一种触控结构层的结构，触控结构层包括多个第一触控电极71和多个第二触控电极72，触控结构层包括多个电极行和多个电极列。其中，多个第一触控电极71沿第一方向x排列成电极行，一个电极行中相邻的两个第一触控电极71均电连接。多个第二触控电极72沿第二方向y排列成电极列，一个电极列中相邻的两个第二触控电极72均电连接。该实施方式中，触控结构层通过胶层与其相邻的膜层粘结固定。图10中以功能膜层包括依次堆叠的第一保护层、弹性恢复层和偏光片为例，弹性恢复层能够辅助功能膜层中的第一保护层、偏光片进行弯折后拱起的恢复，防止多次弯折后各膜层间膜层剥离，并且弹性恢复层能够在受到外力冲击时对封装层进行保护，避免封装失效导致显示异常。可选的，触控结构层中的触控电极以及连接触控电极的连接线采用金属材料制作，将触控结构层设置在偏光片的下方，偏光片能够减少发光器件以及金属走线对环境光的反射，也能够减少触控结构层对环境光的反射，提升显示面板的显示效果。
在另一种实施例中，如图12所示，图12为本申请实施例提供的显示面板的另一种膜层结构示意图。触控结构层107与封装层103直接接触，触控结构层107与封装层103是一体的。在制作时，在封装层103的工艺之后，无需胶层，而是直接在封装层103之上制作触控结构层107形成一体的结构，减少了触控结构层107和封装层103之间的胶层设置，有利于显示面板厚度的减薄。
上述图10和图12实施例中功能膜层均以包括依次堆叠的第一保护层、弹性恢复 层和偏光片进行示意，实际上述图5至图8实施例中的功能膜层均可以应用在上述图10和图12实施例中，在此不再附图示意。
在另一种实施例中，如图13所示，图13为本申请实施例提供的显示面板的另一种膜层结构示意图。显示面板还包括触控结构层107和彩膜层106，彩膜层位于触控结构层107的远离封装层103的一侧，触控结构层107与封装层103直接接触，且彩膜层106与触控结构层107直接接触，也即，封装层103、触控结构层107和彩膜层106均是一体的；其中，彩膜层106包括彩色滤光单元61和遮光部62，在垂直于显示面板方向e上，彩色滤光单元61与发光器件20交叠，遮光部62位于相邻的两个彩色滤光单元61之间。功能膜层104包括第一保护层42和弹性恢复层41，弹性恢复层41通过第七胶层57与彩膜层106粘结贴合。在显示面板制作时，在封装层工艺之后，直接在封装层103之上制作触控结构层107，然后在触控结构层107之上制作彩膜层106，封装层103、触控结构层107和彩膜层106形成一体的结构，层与层之间不需要设置胶层进行粘结，从而减少了触控结构层和封装层贴合工艺中使用的胶层、以及彩膜层与触控结构层贴合工艺中使用的胶层，减少了显示面板结构中胶层的使用，有利于显示面板厚度的减薄。另外，彩膜层设置在触控结构层之上，彩膜层能够减少发光器件以及金属走线对环境光的反射，同时也能够减少触控结构层对环境光的反射，提升显示面板的显示效果。
在另一种实施例中，图14为本申请实施例提供的显示面板的另一种膜层结构示意图，如图14所示，显示面板还包括第二保护层91，第二保护层91位于第一保护层42的远离弹性恢复层41的一侧，在第二保护层91之上还设置有硬罩层92，硬罩层92的硬度大于第一保护层42的硬度，且硬罩层92的硬度大于第二保护层91的硬度，硬罩层92能够进一步对显示面板内部的膜层起到保护作用。在阵列基板101的远离显示层102一侧还设置有下保护层108，可选的，下保护层108包括基底层81和支撑层82，其中，在基底层81和支撑层82之间设置有胶层83，下保护层108通过胶层84与阵列基板101粘结贴合。下保护层用于在显示面板的背侧对显示面板的内部的模组结构起到保护作用。
基于同一发明构思，本申请实施例还提供一种显示装置，图15为本申请实施例提供的显示装置示意图，如图15所示，显示装置包括本申请任意实施例提供的显示面板100。图15所示的显示装置仅仅为示意说明，该显示装置可以是例如车载显示装置、手机、平板计算机、笔记本电脑、电纸书、电视机或者柔性可穿戴产品等。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。

Claims (17)

  1. 一种显示面板，其特征在于，所述显示面板包括：依次堆叠的显示层、封装层和功能膜层，其中，所述显示层包括多个发光器件，所述功能膜层位于所述封装层远离所述显示层的一侧，所述功能膜层至少包括一弹性恢复层，
    所述显示面板包括可弯折区，所述弹性恢复层至少位于所述可弯折区。
  2. 根据权利要求1所述的显示面板，其特征在于，
    所述功能膜层还包括第一保护层，所述第一保护层位于所述弹性恢复层的远离所述封装层的一侧。
  3. 根据权利要求2所述的显示面板，其特征在于，
    所述功能膜层还包括偏光片，所述偏光片位于弹性恢复层的远离所述第一保护层的一侧。
  4. 根据权利要求3所述的显示面板，其特征在于，
    所述第一保护层与所述弹性恢复层是一体的，所述弹性恢复层与所述偏光片之间通过胶层粘接。
  5. 根据权利要求3所述的显示面板，其特征在于，所述第一保护层、所述弹性恢复层以及所述偏光片均是一体的。
  6. 根据权利要求3所述的显示面板，其特征在于，
    所述弹性恢复层与所述偏光片是一体的，所述第一保护层与所述弹性恢复层之间通过胶层粘接。
  7. 根据权利要求3所述的显示面板，其特征在于，
    所述第一保护层与所述弹性恢复层之间，以及所述弹性恢复层与所述偏光片之间，均通过胶层粘接。
  8. 根据权利要求2所述的显示面板，其特征在于，
    所述功能膜层还包括偏光片，所述偏光片位于所述第一保护层和所述弹性恢复层之间。
  9. 根据权利要求8所述的显示面板，其特征在于，
    所述弹性恢复层和所述偏光片是一体的，所述第一保护层和所述偏光片之间通过胶层粘结。
  10. 根据权利要求8所述的显示面板，其特征在于，
    所述第一保护层和所述偏光片之间，以及所述偏光片和所述弹性恢复层之间，均通过胶层粘结。
  11. 根据权利要求1至10任一项所述的显示面板，其特征在于，
    所述显示面板还包括触控结构层，所述触控结构层位于所述封装层的远离所述显示层的一侧。
  12. 根据权利要求11所述的显示面板，其特征在于，所述触控结构层和所述封装层是一体的。
  13. 根据权利要求1或2所述的显示面板，其特征在于，
    所述显示面板还包括触控结构层和彩膜层，所述彩膜层位于所述触控结构层的远离所述封装层的一侧；其中，所述彩膜层包括彩色滤光单元和遮光部，在垂直于所述显示面板方向上，所述彩色滤光单元与所述发光器件交叠，所述遮光部位于相邻的两个所述彩色滤光单元之间；
    所述封装层、所述触控结构层、以及所述彩膜层均是一体的。
  14. 根据权利要求1所述的显示面板，其特征在于，所述弹性恢复层的厚度为d， 其中，20μm≤d≤200μm。
  15. 根据权利要求1所述的显示面板，其特征在于，所述弹性恢复层对可见光的透光率大于90％。
  16. 根据权利要求1所述的显示面板，其特征在于，所述弹性恢复层的弹性回复率大于95％。
  17. 一种显示装置，其特征在于，包括权利要求1至16任一项所述的显示面板。
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113097279B (zh) * 2021-03-31 2024-05-24 京东方科技集团股份有限公司 显示面板及其制备方法
CN116052530B (zh) * 2022-05-19 2023-10-20 荣耀终端有限公司 复合膜及其制备方法、盖板组件、显示屏及电子装置
CN115394205B (zh) * 2022-10-13 2024-07-23 上海天马微电子有限公司 显示面板和显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109377889A (zh) * 2018-12-19 2019-02-22 武汉华星光电半导体显示技术有限公司 柔性显示装置
CN109411520A (zh) * 2018-10-24 2019-03-01 上海天马有机发光显示技术有限公司 柔性显示面板和显示装置
CN109461831A (zh) * 2018-08-31 2019-03-12 云谷（固安）科技有限公司 一种有机发光显示面板及其制备方法
WO2020013436A1 (ko) * 2018-07-13 2020-01-16 동우화인켐 주식회사 플렉시블 디스플레이 모듈 및 이를 포함하는 화상 표시 장치
CN110927834A (zh) * 2018-09-19 2020-03-27 三星显示有限公司 保护膜及包括保护膜的电子设备
CN111047992A (zh) * 2013-06-13 2020-04-21 三星显示有限公司 具有改进的弯曲属性的显示装置及其制造方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010243930A (ja) 2009-04-09 2010-10-28 Seiko Epson Corp 電気光学装置、その製造方法、および電子機器
WO2016068423A1 (ko) 2014-11-01 2016-05-06 삼성에스디아이 주식회사 플렉시블 디스플레이 장치
KR102383097B1 (ko) * 2015-08-27 2022-04-07 삼성디스플레이 주식회사 플렉서블 표시 장치의 커버 윈도우 및 이를 포함하는 플렉서블 표시 장치
JP2017173492A (ja) 2016-03-23 2017-09-28 大日本印刷株式会社 タッチパネル電極付カラーフィルタ基材、およびそれを用いたタッチパネル一体型有機エレクトロルミネッセンス表示装置
KR102534273B1 (ko) 2016-03-25 2023-05-19 삼성디스플레이 주식회사 플렉서블 표시장치
US10476037B2 (en) 2016-04-22 2019-11-12 Samsung Sdi Co., Ltd. Flexible display apparatus
CN206301307U (zh) * 2016-09-06 2017-07-04 上海天马微电子有限公司 一种触控显示面板及触控显示装置
CN106328003B (zh) * 2016-09-09 2017-10-17 京东方科技集团股份有限公司 一种显示面板和显示装置
CN106373983B (zh) * 2016-09-26 2020-01-21 上海天马微电子有限公司 柔性显示面板以及柔性显示屏
CN110249376B (zh) 2017-01-06 2021-08-24 大日本印刷株式会社 光学膜和图像显示装置
CN109425922A (zh) * 2017-08-21 2019-03-05 上海和辉光电有限公司 一种偏光片及其制备方法、显示面板和显示装置
JP2019061241A (ja) * 2017-09-25 2019-04-18 東レ株式会社 画像表示装置
WO2019183985A1 (zh) 2018-03-31 2019-10-03 华为技术有限公司 显示装置、显示装置的制造方法和电子设备
CN208240297U (zh) 2018-06-26 2018-12-14 京东方科技集团股份有限公司 一种柔性显示装置
US11075347B2 (en) * 2018-10-22 2021-07-27 Lg Display Co., Ltd. Flexible display device
CN109545087A (zh) * 2018-12-03 2019-03-29 武汉华星光电半导体显示技术有限公司 可折叠背板结构及其显示装置
CN109785763B (zh) * 2019-03-29 2022-02-08 上海天马微电子有限公司 一种显示面板及其制备方法、显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111047992A (zh) * 2013-06-13 2020-04-21 三星显示有限公司 具有改进的弯曲属性的显示装置及其制造方法
WO2020013436A1 (ko) * 2018-07-13 2020-01-16 동우화인켐 주식회사 플렉시블 디스플레이 모듈 및 이를 포함하는 화상 표시 장치
CN109461831A (zh) * 2018-08-31 2019-03-12 云谷（固安）科技有限公司 一种有机发光显示面板及其制备方法
CN110927834A (zh) * 2018-09-19 2020-03-27 三星显示有限公司 保护膜及包括保护膜的电子设备
CN109411520A (zh) * 2018-10-24 2019-03-01 上海天马有机发光显示技术有限公司 柔性显示面板和显示装置
CN109377889A (zh) * 2018-12-19 2019-02-22 武汉华星光电半导体显示技术有限公司 柔性显示装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4141852A4

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