WO2020042168A1 - 柔性保护膜、曲面显示屏及终端 - Google Patents

柔性保护膜、曲面显示屏及终端 Download PDF

Info

Publication number
WO2020042168A1
WO2020042168A1 PCT/CN2018/103644 CN2018103644W WO2020042168A1 WO 2020042168 A1 WO2020042168 A1 WO 2020042168A1 CN 2018103644 W CN2018103644 W CN 2018103644W WO 2020042168 A1 WO2020042168 A1 WO 2020042168A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective film
layer
flexible
flexible protective
curved
Prior art date
Application number
PCT/CN2018/103644
Other languages
English (en)
French (fr)
Inventor
王风平
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201880096467.7A priority Critical patent/CN112567310A/zh
Priority to EP18932177.1A priority patent/EP3835917A4/en
Priority to US17/271,535 priority patent/US20210185158A1/en
Priority to PCT/CN2018/103644 priority patent/WO2020042168A1/zh
Publication of WO2020042168A1 publication Critical patent/WO2020042168A1/zh

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • H04M1/0269—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel mounted in a fixed curved configuration, e.g. display curved around the edges of the telephone housing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C08J2333/10—Homopolymers or copolymers of methacrylic acid esters
    • C08J2333/12—Homopolymers or copolymers of methyl methacrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
    • C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00—Presence of (meth)acrylic polymer
    • C09J2433/006—Presence of (meth)acrylic polymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2469/00—Presence of polycarbonate
    • C09J2469/006—Presence of polycarbonate in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C09J2475/006—Presence of polyurethane in the substrate
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
    • G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
    • G06F2200/163—Indexing scheme relating to constructional details of the computer
    • G06F2200/1634—Integrated protective display lid, e.g. for touch-sensitive display in handheld computer
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/38—Displays

Definitions

  • the invention relates to the technical field of protective films, in particular to a flexible protective film, a curved display screen and a terminal for a curved display screen.
  • optical protective films have become indispensable auxiliary products for these electronic products; whether at the factory or in normal use,
  • the application of optical protective film can protect the screen of the mobile phone, and realize the functions of preventing scratches and dust.
  • the optical protective film is generally a multilayer structure formed by pasting through optical adhesives, etc., but the optical adhesive layer will generate a large internal stress, which will affect the thermal dimensional stability of the optical protective film.
  • the embodiment of the present application provides a flexible protective film, which solves the technical problem that the existing protective film has unstable bonding due to large internal stress.
  • the present application protects a flexible protective film for the protection of a curved display screen, which can be attached according to the curved shape of the curved display screen.
  • the flexible protective film includes a base layer and a flexible layer laminated with the base layer.
  • the flexible layer is formed by laminating a flexible material in a liquid phase on the surface of the base layer and then curing.
  • the flexible layer of the flexible protective film is directly formed on the base layer, and is not bonded and bonded by means of optical glue, so that the optical glue layer can avoid a large internal gap between the base layer and the flexible layer. The stress avoids affecting the adhesion flexibility of the flexible layer, thereby ensuring the adhesion and stability of the flexible protective film.
  • the flexible layer is formed by a coating method or a deposition method.
  • the coating method refers to that the flexible material in a liquid state is coated on the surface of the substrate layer by roller coating or spray coating, and then is cured by heating and strengthening the hardness of the flexible material layer, thereby forming the flexible layer.
  • the deposition method includes physical deposition or chemical deposition, physical or chemical treatment of a gaseous substance, deposition on the surface of a substrate layer to form a flexible material layer in a liquid state, and then curing to form the flexible layer;
  • the liquid phase refers to a state between a liquid state or a liquid state and a solid state.
  • connection interface between the base layer and the flexible layer is a curved surface.
  • Several recesses and protrusions are formed on the surface of the base layer, that is, the surface is roughened to form an uneven surface.
  • each recess is filled, and the base body is further formed.
  • the connection interface between the layer and the flexible layer is a curved surface, which increases the binding force between the flexible layer and the base layer.
  • the flexible protective film includes a middle region and two side regions, the two side regions are respectively located on opposite sides of the middle region, and are connected to the middle region through a bending region, and the bending
  • the thickness of the region is smaller than the thickness of the middle region, and the bending region is used to fit the curved position of the curved display when the flexible protective film is attached to the curved display. Because the thickness of the bending area is thin, the stress of bending is reduced, and the adhesion of the protective film is further improved.
  • the flexible protective film includes a middle region and two side regions, and the two side regions are formed by bending and extending on opposite sides of the middle region, and each of the side regions and the middle region
  • the connection position is curved, and the two side areas of the flexible protective film are directly shaped into a bent state. There is no need to bend when filming the curved display, no bending stress is generated, and the bonding effect is guaranteed.
  • the size of the flexible protective film is designed according to some standard models of curved display screens during the manufacturing process, which improves the matching with the curved display screens and the efficiency of filming.
  • the material of the base layer is PET or PC or PMMA; the material of the flexible layer is TPU or polyurethane.
  • the base layer can improve the hardness and smoothness of the entire flexible protective film, and enhance the surface damage resistance.
  • the flexible layer provides sufficient flexibility and fit stability for the flexible protective film.
  • the flexible layer of the flexible protective film is two layers, which are respectively laminated on two opposite surfaces of the base layer.
  • the flexible protective film includes a light emitting surface and a PET layer, and the PET layer is laminated on the light emitting surface of the flexible protective film.
  • the light emitting surface may be the surface of the base layer away from the flexible layer, or the surface of the flexible layer away from the base layer. Of course, when there are two flexible layers, the light emitting surface is the surface of the flexible layer.
  • the flexible protective film includes a light emitting surface, and the light emitting surface is provided with a hardened layer and / or an anti-fingerprint processing layer.
  • the light emitting surface may be the surface of the base layer away from the flexible layer, or the surface of the flexible layer away from the base layer. Of course, when there are two flexible layers, the light emitting surface is the surface of the flexible layer.
  • the hardened layer is formed by a surface hardening treatment, or may be pasted on a light emitting surface by an optical adhesive.
  • the anti-fingerprint processing is arranged on the light emitting surface to prevent fingers from framing the screen when the screen is operated.
  • the surface of the flexible layer facing away from the base layer is laminated with an adhesive layer and a release film layer covering the adhesive layer, and the adhesive layer is used to paste the flexible protective film on the surface after removing the release film.
  • the release film layer is used to protect the adhesive layer when the flexible protective film is not used.
  • the glue layer is acrylic glue, silica gel, or a mixture of the two.
  • the flexible protective film further includes an outer protective layer, and the outer protective layer is used to protect the surface of the flexible protective film that operates as a curved display screen.
  • the outer protective layer is provided on the outer surface of the flexible protective film.
  • the outer protective layer may be the surface of the base layer, the surface of the flexible layer, or the surface of the PET layer when the PET layer is provided, to prevent the flexible protection.
  • the outer surface of the film is scratched.
  • the present application also protects a curved display screen, which includes a display surface and the flexible protective film, and a base layer or a flexible layer of the flexible protective film is pasted on the display surface.
  • the curved display screen is a 3D or 2.5D curved screen, and a flexible protective film is attached to the display surface to protect the display screen from being damaged. Since the internal stress of the flexible protective film is relatively small, the bonding force with the curved display screen is guaranteed. To prevent the edges of the protective film from rising, and have sufficient hardness.
  • the display surface of the curved display screen includes a middle display area and an edge display area connected by curved areas on opposite sides of the middle display area, and the bent area of the flexible protective film is abutted to the curved area, and The side region is bonded to the edge display region, and the middle region is bonded to the middle display region.
  • the protective film is bonded to the curved surface position, the bending stress in the bending region is smaller, which can make the flexible protective film The bending area is more closely adhered to the curved surface of the curved display screen.
  • This application also protects a terminal, which includes a terminal body and the curved display screen, the curved display screen is disposed on the terminal body, and provides power and display control through the terminal body.
  • a flexible protective film is provided on the curved display screen to prevent the display screen from being damaged during transportation or use, and to ensure the appearance quality of the terminal.
  • the flexible protective film provided by the present application is used for the protection of curved display screens.
  • the internal stress of the flexible protective film is reduced, the adhesion of the flexible protective film is improved, and the flexible protective film and the curved surface are guaranteed Display fit stability.
  • FIG. 1 is a schematic cross-sectional view of a first embodiment of a flexible protective film of the present application
  • FIG. 2 is a schematic cross-sectional view of a connection interface with a curved surface of the flexible protective film shown in FIG. 1;
  • FIG. 3 is a schematic cross-sectional view of the flexible protective film shown in FIG. 1 including an adhesive layer and a release film layer;
  • FIG. 4 is a schematic cross-sectional view of a second embodiment of a flexible protective film of the present application.
  • FIG. 5 is a schematic cross-sectional view of a third embodiment of the flexible protective film of the present application.
  • FIG. 6 is a schematic cross-sectional view of a fourth embodiment of the flexible protective film of the present application.
  • FIG. 7 is a schematic cross-sectional view of a flexible protective film provided with a hardened layer and an anti-fingerprint treatment layer in the present application.
  • the protective film shown in FIG. 3 is used as a basis;
  • FIG. 8 is a schematic cross-sectional view of a flexible protective film with an outer protective layer of the present application.
  • the protective film shown in FIG. 3 is used as a basis;
  • FIG. 9 is a schematic cross-sectional view of a fifth embodiment of the flexible protective film of the present application.
  • FIG. 10 is a schematic cross-sectional view of a sixth embodiment of a flexible protective film of the present application.
  • FIG. 11 is a schematic diagram of a curved display screen with a flexible protective film of the present application.
  • FIG. 12 is a schematic diagram of a terminal having the curved display screen according to the present application, and a front view is taken as an example.
  • the present application protects a flexible protective film for the protection of curved display screens, which can be fitted along with the curved shape of curved display screens; it is mainly used for terminals such as mobile phones and tablet computers with curved screens, during use or leaving the factory Screen saver.
  • the flexible protective film has a certain hardness, which can effectively protect the flat display area in the middle of the curved display screen from being scratched and damaged.
  • the flexible protective film has a relatively stable bonding force and ensures the use stability.
  • the flexible protective film includes a base layer and a flexible layer laminated with the base layer.
  • the flexible layer is formed by laminating a flexible material in a liquid phase on a surface of the base layer and curing the flexible layer.
  • the flexible layer of the flexible protective film is directly formed on the base layer, and is not bonded and bonded by means of optical glue, so that the optical glue layer can avoid a large internal gap between the base layer and the flexible layer. The stress avoids affecting the adhesion flexibility of the flexible layer, thereby ensuring the adhesion and stability of the flexible protective film.
  • the flexible protective film and the terminal are described below with specific examples.
  • the flexible protective film includes a base layer 10 and a flexible layer 20 laminated on the base layer 10.
  • the flexible layer 20 is a liquid-phase flexible material. Laminated on the surface of the base layer 10 and then cured.
  • the base layer 10 includes a first surface 101 and a second surface 102 opposite to the first surface 101.
  • the second surface 102 is a light emitting surface of the flexible protective film, and the flexible layer 20 is formed on the first surface 101.
  • the liquid phase refers to a state where the flexible material is in a liquid state or between a liquid state and a solid state, and solidification means that an object in a liquid phase solidifies to form a solid state.
  • the material of the base layer is PET or PC or PMMA; the material of the flexible layer is TPU or polyurethane.
  • the base layer can improve the hardness and smoothness of the entire flexible protective film, and enhance the surface damage resistance.
  • the flexible layer provides sufficient flexibility and fit stability for the flexible protective film.
  • the materials of the base layer and the flexible layer may also be other materials suitable for films having the same performance as PET and TPU, and are not limited to PET and TPU.
  • the flexible layer 20 is formed by a coating method or a deposition method.
  • the coating method refers to applying a liquid flexible material to a surface of a base layer by roller coating or spray coating, and then curing and strengthening the hardness of the flexible material layer to form the solid flexible layer.
  • the deposition method includes physical deposition or chemical deposition, physical or chemical treatment of a gaseous substance, deposition on the surface of the substrate layer to form a flexible material layer in a liquid state, and then curing to form the flexible layer.
  • the flexible layer 20 is formed on the first surface 101 of the base layer 20 by a coating method.
  • the flexible layer 20 is directly formed on the surface of the base layer 10 by using these two methods.
  • Optical adhesives and other methods are needed for bonding and bonding, so that the optical adhesive layer can avoid large internal stress between the base layer 10 and the flexible layer 20 and ensure the adhesion of the flexible protective film.
  • connection interface A between the base layer 10 and the flexible layer 20 is a curved surface or a flat surface.
  • the fact that the connection interface A is flat refers to a smooth connection interface.
  • surface roughening treatment is performed, that is, a plurality of concave portions and convex portions are formed on the surface of the base layer 10 to form an uneven curved surface, and the flexible layer 20 is covered in a liquid phase state.
  • various recesses are filled, so that the connection interface A between the base layer 10 and the flexible layer 20 is a curved surface, which increases the bonding force between the flexible layer 20 and the base layer 10.
  • the formation of several concave portions and convex portions on the surface of the base layer 10 can be formed by performing a roughening treatment on the surface of the base layer 10.
  • the surface described here is the first surface 101 described above.
  • the surface of the flexible 20 facing away from the base layer 10 is laminated with an adhesive layer 30 and a release film layer 40 covering the adhesive layer 30.
  • the adhesive layer 30 is removing the release film. After 40, it is used to paste the flexible protective film on a curved display screen.
  • the base layer 10, the flexible layer 20, and the adhesive layer 30 constitute a functional layer of the protective film.
  • the light emitting surface of the flexible protective film and the adhesive layer 30 are located on opposite sides of the protective film.
  • the release film layer 40 is used to protect the adhesive layer 30 when a flexible protective film is not used.
  • the glue layer 30 is an acrylic glue, a silica gel, or a mixture of the two.
  • the flexible layer 20 is formed on the second surface 102 of the base layer.
  • the flexible layer 20 is formed on the second surface 102 of the base layer 20 by coating.
  • the adhesive layer 30 is disposed on the first surface 101 of the base layer 10, and the flexible layer 20 faces away from the substrate.
  • the surface of the adhesive layer 30 is a light emitting surface of the flexible film.
  • the flexible layer 20 is used as the outer layer of the protective film, which can also have the effect of adhesion stability.
  • the flexible layer 20 of the flexible protective film is two layers, which are laminated on two opposite surfaces of the base layer 10 respectively. on.
  • the two flexible layers 20 are laminated on the first surface 101 and the second surface 102, respectively.
  • the surface of the flexible layer 20 on the second surface 102 still serves as a light emitting surface of the flexible protective film.
  • the adhesive layer 30 is laminated on a surface of the flexible layer 20 on the first surface 101 facing away from the base layer 10.
  • the flexible protective film includes a PET layer 60, and the PET layer is laminated on the flexible protective film
  • the light-exiting surface of the flexible protective film can increase the hardness.
  • the light emitting surface may be the surface of the base layer 10 away from the flexible layer 20, that is, the second surface 102 of the first embodiment; or the surface of the flexible layer 20 away from the base layer 10, that is, the flexible layer of the second embodiment 20; of course, when there are two flexible layers 20, the light emitting surface is the surface of the flexible layer 20, that is, the surface far from the adhesive layer 30.
  • the PET layer 60 is adhered to the second surface 102 of the base layer 10 through acrylic or silicone.
  • the addition of the flexible layer or the PET layer belongs to the layer structure of the used layer.
  • a light-emitting surface of the flexible protective film is provided with a hardened layer and / or an anti-fingerprint processing layer.
  • the light emitting surface may be the surface of the base layer 10 away from the flexible layer 20, that is, the second surface 102 of the first embodiment; or the surface of the flexible layer 20 away from the base layer 10, that is, the flexible layer of the second embodiment 20; of course, when there are two flexible layers 20, the light emitting surface is the surface of the flexible layer 20, that is, the surface far from the adhesive layer 30.
  • the hardened layer is formed by a surface hardening treatment, or may be pasted on a light emitting surface by an optical adhesive.
  • the anti-fingerprint processing is arranged on the light emitting surface to prevent fingers from framing the screen when the screen is operated.
  • a light-proof surface of the flexible protective film is provided with an anti-fingerprint processing layer 12 and a hardened layer 13.
  • the hardened layer 13 can improve the hardness and damage prevention performance of the outer surface of the flexible protective film.
  • the anti-fingerprint processing layer 12 can prevent the streamlined fingerprint from affecting the use and appearance of the screen when the protective film is used again.
  • the flexible protective film further includes an outer protective layer.
  • the outer protective layer is used to protect the surface of the flexible protective film operating as a curved display screen.
  • the outer protective layer is provided on the outer surface of the flexible protective film.
  • an outer protective layer 50 is provided on the second surface 102 of the base layer 10 to prevent the outer surface of the flexible protective film from being scratched. It can be understood that the overall thickness of the flexible protective film in any of the foregoing embodiments is uniform and relatively smooth.
  • FIG. 9 is a fifth embodiment of the flexible protective film of the present application, which can be based on any one of the foregoing embodiments, that is, the technical solution in this embodiment can be applied to any of the foregoing embodiments.
  • the protective film shown in FIG. 1 is used as a basis for description
  • FIG. 9 is a schematic diagram.
  • the flexible protective film includes a middle region 21 and two side regions 22, which are respectively located on opposite sides of the middle region 21 and are connected to the middle region 21 through a bending region 23;
  • the thickness of the bent region 23 is smaller than the thickness of the middle region 21, and in this embodiment, it is also smaller than the thickness of the side region 22.
  • the bending area 23 is configured to fit the curved surface of the curved display when the flexible protective film is attached to the curved display. Because the thickness of the bending area 23 is thin, the bending stress is reduced. When the protective film is bonded to the non-flat area of the curved display screen, the adhesion of the protective film can be improved to avoid unstable bonding.
  • the middle region 21 and the side region 22 are divided along the extending direction of the flexible protective film.
  • the protective film of this embodiment includes a base layer 10, a flexible layer 20, an adhesive layer 30, and a release film layer 40. And / or the outer protective layer 50 is arranged perpendicular to the direction of the flexible protective film. Therefore, the middle region 21 and the side region 22 include the base layer 10 and the flexible layer 20, that is, folded The thickness of the curved region 23 is smaller than the thickness of the intermediate region 21, which means that the thickness of at least the base layer 10 and the flexible layer 20 at the position of the curved region 23 is smaller than the thickness of other regions.
  • the adhesive layer 30 and the PET layer 60 on the flexible protective film 20 in this embodiment can also be reduced in thickness with the position of the bending region 23.
  • the bending region 23 of the flexible protective film shown in this embodiment is reduced in thickness on two opposite surfaces of the flexible protective film.
  • the flatness of the light-emitting surface can be maintained, and light is emitted from the adhesive layer 30.
  • the thickness in the plane direction is reduced, that is, only the side of the adhesive layer 30 has a height difference with the middle region 21 and the side region 22.
  • the flexible protective film includes a middle region 24 and two side regions 25, and the two side regions 25 are bent by opposite sides of the middle region 24. It is formed by folding and extending, and the connecting position 26 of each of the side region 25 and the middle region 24 is a curved surface.
  • the two side regions 25 of the flexible protective film are directly shaped into a bent state, and there is no need to give a curved surface.
  • the display screen is bent, no bending stress is generated to ensure the fit effect, and the size of the entire flexible protective film is designed according to some standard models of curved display screens during the production process to improve the matching with curved display screens and Film efficiency.
  • connection position 26 is an arc-shaped structure, which conforms to the curved structure of a general curved display screen.
  • it can also be in other forms, not limited to an arc shape, so as to cooperate with curved surfaces of different forms of the curved display screen.
  • the flexible protective film 20 in this embodiment uses the flexible protective film shown in FIG. 3 as an example. Specifically, the middle region 21 and the side region 22 are divided along the extending direction of the flexible protective film.
  • the protective film includes a base layer 10, a flexible layer 20, an adhesive layer 30, a release film layer 40, and / or an outer protective layer 50 arranged perpendicular to the direction of the flexible protective film. Therefore, the middle region 21 and the side
  • the edge region 22 includes at least the base layer 10, the flexible layer 20, and the adhesive layer 30.
  • the release film layer 40, the outer protective layer 50, or the PET layer 60 on the protective film are all accompanied by the flexible protective film. Shape.
  • the present application also protects a curved display screen D, which includes a display surface and the flexible protective film N, and the flexible protective film N may be the protective film of any one of the foregoing embodiments.
  • the flexible protective film shown in FIG. 3 is taken as an example.
  • the base layer 10 or the flexible layer 20 of the flexible protective film is pasted on the display table.
  • the curved display screen is a 3D curved screen, and a flexible protective film is pasted on the display surface according to the shape of the display surface of the curved display screen to protect the display screen from being damaged due to the internal stress of the flexible protective film. It is relatively small, so it ensures the adhesion with the curved display, avoids the edge of the protective film from rising, and has sufficient hardness.
  • the display surface of the curved display screen includes a middle display area m1 and an edge display area m3 connected to the edge display area m3 through the curved area m2 on opposite sides of the middle display area m1, and the bending area 23 of the flexible protective film and the curved surface
  • the area m2 is attached, the side area 22 is attached to the edge display area m3, the middle area 21 is attached to the middle display area m1, and when the protective film is attached to the curved area m2, it is bent
  • the bending stress of the region 23 is smaller, and the bending region 23 of the flexible protective film and the curved region m2 can be more closely adhered.
  • This application also protects a terminal, which includes a terminal body S and the curved display screen D.
  • the curved display screen D is disposed on the terminal body S, and provides power and display through the terminal body S. control.
  • a flexible protective film N is provided on the curved display screen to prevent the display screen from being damaged during transportation or use, and to ensure the appearance quality of the terminal.
  • the flexible protective film N is a protective film of any of the embodiments described in this application, and the flexible protective film used in FIG. 12 is a protective film with the release film layer removed in FIG. 3.
  • the flexible protective film N can be pasted on the curved display screen D of the terminal when the terminal leaves the factory. Of course, the flexible protection at this time does not include a release film layer.
  • the flexible protective film may also be pasted on the terminal used by the user; the terminal in this embodiment refers to a 3D curved screen mobile phone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种柔性保护膜，用于曲面显示屏的保护，其特征在于，包括基体层（10）及与基体层（10）层叠的柔性层（20），柔性层（20）是以液相的柔性材料层叠在基体层（10）的表面后进行固化形成。该柔性保护膜将柔性层（20）直接形成于基体层（10）上来减小柔性保护膜的内应力，提高柔性保护膜的贴附力。

Description

柔性保护膜、曲面显示屏及终端 技术领域
本发明涉及保护膜技术领域，尤其涉及一种用于曲面显示屏的柔性保护膜、曲面显示屏及终端。
背景技术
伴随着电子产品，如手机、平板电脑等终端产品的屏幕进化，如采用超大屏、曲面屏的设计，光学保护膜成为这些电子产品不可少的辅助产品；无论是在出厂时还是平时使用时，应用光学保护膜可以保护手机屏幕，实现防止刮花，防尘等功能。光学保护膜一般为多层结构通过光学胶等方式粘贴形成，但是光学胶层会产生较大的内应力，会影响光学保护膜的热尺寸稳定性能。
发明内容
本申请实施例提供一种柔性保护膜，解决现有保护膜因较大内应力导致保护膜贴合不稳定的技术问题。
本申请保护一种柔性保护膜，用于曲面显示屏的保护，可以随着曲面显示屏的曲面形状而贴合。柔性保护膜包括基体层及所述基体层层叠的柔性层，所述柔性层是以液相的柔性材料层叠在所述基体层的表面后进行固化形成。所述柔性保护膜的柔性层是直接形成于所述基体层上，并非采用光学胶等方式进行粘接贴合的，如此可以避免光学胶层在基体层和柔性层之间产生较大的内应力，避免影响柔性层的贴合柔性，进而可以保证柔性保护膜的贴附性和贴合稳定性。
其中，所述柔性层通过涂布方式或者沉积的方式形成。所述涂布方式是指将液相状态的柔性材料通过辊涂或喷涂在基体层的表面，再进行加热烘烤等方式进行固化加固柔性材料层的硬度，进而形成所述柔性层。所述沉积方式包括物理沉积或化学沉积，将气态的物质进行物理或化学处理，在基体层表面沉积形成一层液相状态的柔性材料层，然后在进行固化进而形成所述柔性层；其中所述的液相是指液态或者液态至固态之间的状态。
其中，所述基体层和所述柔性层的之间的连接界面为曲面。所述基础层的表面上形成数个凹部和凸部，即做表面粗糙化处理，形成凹凸不平的曲面，在所述柔性层以液态状态覆盖至该表面时，会填充各个凹部，进而使基体层和所述柔性层的之间的连接界面为曲面，增加了所述柔性层和基体层的结合力。
其中，所述柔性保护膜包括中间区和两个侧边区，所述两个侧边区分别位于所述中间区相对两侧，且通过折弯区与所述中间区连接，所述折弯区的厚度小于所述中间区的厚度，所述折弯区用于在柔性保护膜贴于曲面显示屏时，与曲面显示屏的曲面位置贴合。由于折弯区的厚度较薄，减小弯折的应力，进一步提高保护膜的贴附性。
其中，所述柔性保护膜包括中间区和两个侧边区，所述两个侧边区由所述中间区相对两侧弯折延伸形成，且每一所述侧边区与所述中间区的连接位为弧面，柔性保护膜的两个侧边区直接定型为弯折后的状态，无需在给曲面显示屏贴膜时进行弯折，无弯折应力产生， 保证贴合效果，而整个柔性保护膜的尺寸在制作过程中就按照一些标准型号的曲面显示屏设计，提高与曲面显示屏的匹配度及贴膜效率。
其中，所述基体层的材料为PET或者PC或者PMMA；所述柔性层的材料为TPU或者聚氨酯。所述基体层可以提高整个柔性保护膜的硬度、爽滑度，增强表面抗损强度。所述柔性层为柔性保护膜提供足够的柔韧度及贴合稳定性。
其中，所述柔性保护膜的柔性层为两层，分别层叠于所述基体层的两个相对表面上。通过设置两层柔性层，而且是直接形成于基体层上，可以保证柔韧度及硬度。
其中，所述柔性保护膜包括出光面和PET层，所述PET层层叠于所述柔性保护膜的出光面上。所述出光面可以是基体层远离柔性层的表面，也可以是柔性层远离基体层的表面，当然两个层柔性层时，出光面为柔性层的表面。
其中，所述柔性保护膜包括出光面，所述出光面上设有硬化层和/或防指纹处理层。所述出光面可以是基体层远离柔性层的表面，也可以是柔性层远离基体层的表面，当然两个层柔性层时，出光面为柔性层的表面。所述硬化层是通过表面硬化处理形成，也可以是通过光学胶粘贴在出光面上。所述防指纹处理设置于所述出光面，防止对屏幕操作时手指弄花屏幕。
其中，所述柔性层背向所述基体层的表面层叠有胶层及覆盖所述胶层的离型膜层，所述胶层在去掉离型膜后用于将所述柔性保护膜粘贴于曲面显示屏上。所述离型膜层用于在柔性保护膜未被使用时保护所述胶层。所述胶层为丙烯酸胶、硅胶或两者混合物。
其中，所述柔性保护膜的还包括外保护层，所述外保护层用于保护所述柔性保护膜作为曲面显示屏操作的表面。所述外保护层设于柔性保护膜的外表面，结合上述实施例，可以是基体层的表面，柔性层的表面或者在设有PET层时，设于PET层的表面，用于防止柔性保护膜的外表面被刮花。
本申请还保护一种曲面显示屏，其包括显示表面及所述的柔性保护膜，所述柔性保护膜的基体层或者柔性层粘贴于所述显示表面上。所述曲面显示屏为3D或2.5D曲面屏，柔性保护膜贴于显示表面上用于保护显示屏不被损坏，由于柔性保护膜的内应力比较小，所以保证了与曲面显示屏的贴合力，避免保护膜边缘翘起，同时有足够的硬度。
其中，所述曲面显示屏的显示表面包括中间显示区和位于中间显示区相对两侧的通过曲面区连接边缘显示区，所述柔性保护膜的折弯区与所述曲面区贴合，所述侧边区与所述边缘显示区贴合，所述中间区与所述中间显示区贴合，在保护膜与曲面位置贴合时，折弯区弯折应力更小，可以使柔性保护膜的折弯区与所述曲面显示屏的的曲面贴合的更加紧密。
本申请还保护一种终端，其包括终端本体及所述的曲面显示屏，所述曲面显示屏设于所述终端本体上，通过终端本体提供电源和显示控制。所述曲面显示屏上设有柔性保护膜，防止显示屏在运输过程中或者使用过程中被损坏，保证终端的外观质量。
本申请提供的柔性保护膜用于曲面显示屏的保护，并通过将柔性层直接形成于基体层上来减小柔性保护膜的内应力，提高柔性保护膜的贴附力，保证柔性保护膜与曲面显示屏贴合稳定性。
附图说明
图1是本申请的柔性保护膜的第一实施例的截面示意图；
图2是图1所示柔性保护膜具有曲面的连接界面的截面示意图；
图3是图1所示的柔性保护膜包括胶层和离型膜层的截面示意图；
图4是本申请的柔性保护膜的第二实施例的截面示意图；
图5是本申请的柔性保护膜的第三实施例的截面示意图；
图6是本申请的柔性保护膜的第四实施例的截面示意图；
图7是本申请的柔性保护膜的设有硬化层和防指纹处理层的截面示意图，本实施例中是以图3所示的保护膜为基础；
图8是本申请的柔性保护膜具有外保护层的截面示意图，本实施例中是以图3所示的保护膜为基础；
图9是本申请的柔性保护膜的第五实施例的截面示意图；
图10是本申请的柔性保护膜的第六实施例的截面示意图；
图11是本申请的具有柔性保护膜的曲面显示屏的示意简图；
图12是本申请的具有所述曲面显示屏的终端的示意简图，其是以正面视图为例。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述。
本申请保护一种柔性保护膜，用于曲面显示屏的保护，可以随着曲面显示屏的曲面形状而贴合；主要用于具有曲面屏的手机平板电脑等终端，在使用过程中的或者出厂时的屏幕保护。所述柔性保护膜具有一定硬度，可以有效的保护曲面显示屏中间平整显示区域，防止被刮擦和损坏，同时柔性保护膜具有较稳定的贴合力，保证使用稳定性。
所述柔性保护膜包括基体层及所述基体层层叠的柔性层，所述柔性层是以液相的柔性材料层叠在所述基体层的表面后进行固化形成。所述柔性保护膜的柔性层是直接形成于所述基体层上，并非采用光学胶等方式进行粘接贴合的，如此可以避免光学胶层在基体层和柔性层之间产生较大的内应力，避免影响柔性层的贴合柔性，进而可以保证柔性保护膜的贴附性和贴合稳定性。
下面以具体的实施例对所述的柔性保护膜和终端进行说明。
请参照图1，本申请柔性保护膜的第一实施例中，所述柔性保护膜包括基体层10及所述基体层10层叠的柔性层20，所述柔性层20是以液相的柔性材料层叠在所述基体层10的表面后进行固化形成。所述基体层10包括第一表面101和与所述第一表面101相对设置的第二表面102。本实施例中，所述第二表面102为所述柔性保护膜的出光面，所述柔性层20形成于所述第一表面101上。所述液相是指柔性材料处于液态或者液态至固态之间的状态，而固化是指液相的物体凝固形成固态。其中，所述基体层的材料为PET或者PC或者PMMA；所述柔性层的材料为TPU或者聚氨酯。所述基体层可以提高整个柔性保护膜的硬度、爽滑度，增强表面抗损强度。所述柔性层为柔性保护膜提供足够的柔韧度及贴合稳定性。当然，基体层和柔性层的材料还可以是其他具有与PET、TPU同等性能的适用于薄膜的材料，不限于PET、TPU。
进一步的，所述柔性层20通过涂布方式或者沉积的方式形成。所述涂布方式是指将液态的柔性材料通过辊涂或喷涂涂在基体层的表面，再进行固化加固柔性材料层的硬度，进而形成固态的所述柔性层。所述沉积方式包括物理沉积或化学沉积，将气态的物质进行物理或化学处理，在基体层表面沉积形成一层液相状态的柔性材料层，然后在进行固化进而形成所述柔性层。本实施例中，所述柔性层20是通过涂布的方式形成于所述基体层20的第一表面101上；使用这两种方式将柔性层20直接形成于基体层10的表面上，不需要采用光学胶等方式进行粘接贴合的，如此可以避免光学胶层在基体层10和柔性层20之间产生较大的内应力，保证柔性保护膜的贴附性。
进一步的，请参阅图2，所述基体层10和所述柔性层20的之间的连接界面A为曲面或者平面。所述连接界面A为平面是指平滑的连接界面。所述连接界面A为曲面时通过做表面粗糙化处理，即在所述基础层10的表面上形成数个凹部和凸部，形成凹凸不平的曲面，在所述柔性层20以液相状态覆盖至该表面时，会填充各个凹部，进而使基体层10和所述柔性层20的之间的连接界面A为曲面，增加了所述柔性层20和基体层10的结合力。所述基础层10的表面上形成数个凹部和凸部即是通过在基体层10的表面进行粗糙化处理即可形成，此处所述的表面就是上述第一表面101。
进一步的，请参阅图3，所述柔性20背向所述基体层10的表面层叠有胶层30及覆盖所述胶层30的离型膜层40，所述胶层30在去掉离型膜40后用于将所述柔性保护膜粘贴于曲面显示屏上。所述基体层10、柔性层20及胶层30构成所述保护膜的使用功能层。所述的柔性保护膜的的出光面与所述胶层30是位于所述保护膜的相对两侧。所述离型膜层40用于在柔性保护膜未被使用时保护所述胶层30。所述胶层30为丙烯酸胶、硅胶或两者混合物。
请参阅图4，本申请的第二实施例中，与上述实施例不同的是，所述柔性层20形成于所述基体层的第二表面102上。所述柔性层20是通过涂布的方式形成于所述基体层20的第二表面102，所述胶层30设于所述基体层10的第一表面101上，并且柔性层20背向所述胶层30的表面为柔性膜的出光面。本实施例中，以柔性层20为保护膜的外层，可同样起到贴附稳定性的效果。
请参阅图5，本申请的第三实施例中，与上述第一实施例不同的是，所述柔性保护膜的柔性层20为两层，分别层叠于所述基体层10的两个相对表面上。通过设置两层柔性层，而且是直接形成于基体层上，可以保证柔韧度及整体刚度。具体的，两层所述的柔性层20分别层叠于所述第一表面101和第二表面102上，位于第二表面102上的柔性层20的表面依然作为柔性保护膜的出光面。所述胶层30层叠于位于所述第一表面101上的柔性层20的背向所述基体层10的表面上。
请参阅图6，在本申请的第一至第三实施例的基础上，本申请的第四实施例中，所述柔性保护膜包括PET层60，所述PET层层叠于所述柔性保护膜的出光面上，可以增加所述柔性保护膜的硬度。所述出光面可以是基体层10远离柔性层20的表面，也就是第一实施例的第二表面102；也可以是柔性层20远离基体层10的表面，也就是第二实施例的柔性层20的表面；当然，两个层柔性层20时，出光面为柔性层20的表面，即远离胶层30的表面。本实施例中，以第一实施例为基础，所述PET层60通过丙烯酸或硅胶粘贴于所 述基体层10的第二表面102上。上述实施例中增加柔性层或者PET层均属于使用层的层结构。
进一步的，请参阅图7，在上述任一实施例中，所述柔性保护膜的出光面上设有硬化层和/或防指纹处理层。所述出光面可以是基体层10远离柔性层20的表面，也就是第一实施例的第二表面102；也可以是柔性层20远离基体层10的表面，也就是第二实施例的柔性层20的表面；当然，两个层柔性层20时，出光面为柔性层20的表面，即远离胶层30的表面。所述硬化层是通过表面硬化处理形成，也可以是通过光学胶粘贴在出光面上。所述防指纹处理设置于所述出光面，防止对屏幕操作时手指弄花屏幕。本实施例中，以第一实施例为基础，柔性保护膜的出光面上设有防指纹处理层12和硬化层13。所述硬化层13可以提高柔性保护膜外表面硬度及防损伤性能。所述防指纹处理层12可以防止保护膜再被使用时流线指纹影响屏幕的使用和外观美感。
进一步的，所述柔性保护膜的还包括外保护层。所述外保护层用于保护所述柔性保护膜作为曲面显示屏操作的表面，所述外保护层设于柔性保护膜的外表面，结合上述实施例，请参阅图8，本实施例中就是以图3所示的保护膜的实施例为基础说明，基体层10的第二表面102上设有外保护层50，用于防止柔性保护膜的外表面被刮花。可以理解，上述任一实施例中的柔性保护膜的整体厚度是均匀的，比较平滑。
请参阅图9，是本申请的柔性保护膜的第五实施例，可以以上述任意一个实施例为基础，也就是本实施例中的技术方案可以应用于上述任一实施例中。具体的以图1所示的保护膜为了基础进行说明，且图9为示意图。所述柔性保护膜包括中间区21和两个侧边区22，所述两个侧边区22分别位于所述中间区21相对两侧，且通过折弯区23与所述中间区21连接；所述折弯区23的厚度小于所述中间区21的厚度，本实施例中也小于侧边区22的厚度。所述折弯区23用于在柔性保护膜贴于曲面显示屏时，与曲面显示屏的曲面位置贴合。由于折弯区23的厚度较薄，减小弯折的应力，在保护膜与曲面显示屏非平整的区域贴合时，可以提高保护膜的贴附性，避免贴合不稳定。
具体的，所述中间区21和侧边区22是以沿着柔性保护膜延伸方向划分，而本实施例的保护膜包括的基体层10、柔性层20、胶层30、离型膜层40，和/或者外保护层50是垂直于柔性保护膜的方向排布，因此，所述中间区21和侧边区22是包含了基体层10、柔性层20在内的，也就是说，折弯区23的厚度小于所述中间区21的厚度，是指位于折弯区23位置的至少是基体层10、柔性层20的厚度小于其他区域的厚度。当然本实施例的所述柔性保护膜20上的胶层30、PET层60也可以随着折弯区23的位置而减小厚度。本实施例所示的柔性保护膜的弯折区23是在柔性保护膜两个相对的表面减小了厚度，而在其它实施方式中，可以保持出光面的平整性，由胶层30向出光面方向厚度减小，即只有胶层30一侧与中间区21和侧边区22产生高度差。
请参阅图10，本实施例的第六实施例中，所述柔性保护膜包括中间区24和两个侧边区25，所述两个侧边区25由所述中间区24相对两侧弯折延伸形成，且每一所述侧边区25与所述中间区24的连接位26为弧面，柔性保护膜的两个侧边区25直接定型为弯折后的状态，无需在给曲面显示屏贴膜时进行弯折，无弯折应力产生，保证贴合效果，而整个柔性保护膜的尺寸在制作过程中就按照一些标准型号的曲面显示屏设计，提高与曲面显示屏的 匹配度及贴膜效率。本实施例中，连接位26是弧形结构，符合一般曲面显示屏的曲面结构，当然也可以是其他形态的，不限于弧形，以实现与曲面显示屏不同形态的曲面进行配合。
本实施例的所述柔性保护膜20以图3所示的柔性保护膜为例；具体的，所述中间区21和侧边区22是以沿着柔性保护膜延伸方向划分，而本实施例的保护膜包括的基体层10、柔性层20、胶层30、离型膜层40，和/或者外保护层50是垂直于柔性保护膜的方向排布，因此，所述中间区21和侧边区22至少是包含了基体层10、柔性层20、胶层30在内的，其中该保护膜上的离型膜层40、外保护层50或者PET层60均是随着柔性保护膜的形状而改变。
请参阅图11，本申请还保护一种曲面显示屏D，其包括显示表面及所述的柔性保护膜N，所述柔性保护膜N可以是上述任意一实施例的保护膜。本实施例中以图3所示的柔性保护膜为例，所述柔性保护膜的基体层10或者柔性层20粘贴于所述显示表上。所述曲面显示屏为3D曲面屏，柔性保护膜贴于显示表面上随着所述曲面显示屏的显示表面的形状而贴合，用于保护显示屏不被损坏，由于柔性保护膜的内应力比较小，所以保证了与曲面显示屏的贴合力，避免保护膜边缘翘起，同时有足够的硬度。
具体的，所述曲面显示屏的显示表面包括中间显示区m1和位于中间显示区m1相对两侧的通过曲面区m2连接边缘显示区m3，所述柔性保护膜的折弯区23与所述曲面区m2贴合，所述侧边区22与所述边缘显示区m3贴合，所述中间区21与所述中间显示区m1贴合，在保护膜与曲面区m2位置贴合时，折弯区23弯折应力更小，可以使柔性保护膜的折弯区23与所述曲面区m2贴合的更加紧密。
请参阅图12，本申请还保护一种终端，其包括终端本体S及所述的曲面显示屏D，所述曲面显示屏D设于所述终端本体S上，通过终端本体S提供电源和显示控制。所述曲面显示屏上设有柔性保护膜N，防止显示屏在运输过程中或者使用过程中被损坏，保证终端的外观质量。所述柔性保护膜N为本申请所述的任一实施例的保护膜，图12中使用的柔性保护膜为图3中去掉离型膜层后的保护膜。所述柔性保护膜N可以在终端出厂时就粘贴在终端的曲面显示屏D上，当然，此时的柔性保护莫是不包含有离型膜层的。所述柔性保护膜也可以是在使用者使用终端是再粘贴上去的；本实施例的终端指3D曲屏手机。
以上是本发明实施例的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明实施例原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明实施例的保护范围。

Claims (14)

  1. 一种柔性保护膜，用于曲面显示屏的保护，其特征在于，包括基体层及所述基体层层叠的柔性层，所述柔性层是以液相的柔性材料层叠在所述基体层的表面后进行固化形成。
  2. 如权利要求1所述的柔性保护膜，其特征在于，所述柔性层通过涂布方式或者沉积的方式形成。
  3. 如权利要求1或2所述的柔性保护膜，其特征在于，所述基体层和所述柔性层的之间的连接界面为平面或者曲面。
  4. 如权利要求1-3任一项所述的柔性保护膜，其特征在于，所述柔性保护膜包括中间区和两个侧边区，所述两个侧边区分别位于所述中间区相对两侧，且通过折弯区与所述中间区连接，所述折弯区的厚度小于所述中间区的厚度，所述折弯区用于在柔性保护膜贴于曲面显示屏时，与曲面显示屏的曲面位置贴合。
  5. 如权利要求1-3任一项所述的柔性保护膜，其特征在于，所述柔性保护膜包括中间区和两个侧边区，所述两个侧边区由所述中间区相对两侧弯折延伸形成，且每一所述侧边区与所述中间区的连接位为弧面。
  6. 如权利要求1-5任一项所述的柔性保护膜，其特征在于，所述基体层的材料为PET、PC或PMMA；所述柔性层的材料为TPU或者聚氨酯。
  7. 如权利要求1-6任一项所述的柔性保护膜，其特征在于，所述柔性保护膜的柔性层为两层，分别层叠于所述基体层的两个相对表面上。
  8. 如权利要求1-7任一项所述的柔性保护膜，其特征在于，所述柔性保护膜包括出光面和PET层，所述PET层层叠于所述柔性保护膜的出光面上。
  9. 如权利要求1-7任一项所述的柔性保护膜，其特征在于，所述柔性保护膜包括出光面，所述出光面上设有硬化层和/或防指纹处理层。
  10. 如权利要求1-9任一项所述的柔性保护膜，其特征在于，所述柔性层背向所述基体层的表面层叠有胶层及覆盖所述胶层的离型膜层，所述胶层在去掉离型膜后用于将所述柔性保护膜粘贴于曲面显示屏上。
  11. 如权利要求1-10任一项所述的柔性保护膜，其特征在于，所述柔性保护膜的还包括外保护层，所述外保护层用于保护所述柔性保护膜作为曲面显示屏操作的表面。
  12. 一种曲面显示屏，其特征在于，包括显示表面及权利要求1-11任一项所述的柔性保护膜，所述柔性保护膜的基体层或者柔性层粘贴于所述显示表面上。
  13. 如权利要求12所述的曲面显示屏，其特征在于，所述曲面显示屏的显示表面包括中间显示区和位于中间显示区相对两侧的通过曲面区连接边缘显示区，所述柔性保护膜的折弯区与所述曲面区贴合，所述侧边区与所述边缘显示区贴合，所述中间区与所述中间显示区贴合。
  14. 一种终端，其特征在于，包括终端本体及权利要求12或13所述的曲面显示屏，所述曲面显示屏设于所述终端本体上，通过终端本体提供电源和显示控制。
PCT/CN2018/103644 2018-08-31 2018-08-31 柔性保护膜、曲面显示屏及终端 WO2020042168A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880096467.7A CN112567310A (zh) 2018-08-31 2018-08-31 柔性保护膜、曲面显示屏及终端
EP18932177.1A EP3835917A4 (en) 2018-08-31 2018-08-31 SOFT PROTECTIVE FILM, CURVED DISPLAY SCREEN, AND TERMINAL
US17/271,535 US20210185158A1 (en) 2018-08-31 2018-08-31 Flexible protective film, curved display, and terminal
PCT/CN2018/103644 WO2020042168A1 (zh) 2018-08-31 2018-08-31 柔性保护膜、曲面显示屏及终端

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/103644 WO2020042168A1 (zh) 2018-08-31 2018-08-31 柔性保护膜、曲面显示屏及终端

Publications (1)

Publication Number Publication Date
WO2020042168A1 true WO2020042168A1 (zh) 2020-03-05

Family

ID=69643791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/103644 WO2020042168A1 (zh) 2018-08-31 2018-08-31 柔性保护膜、曲面显示屏及终端

Country Status (4)

Country Link
US (1) US20210185158A1 (zh)
EP (1) EP3835917A4 (zh)
CN (1) CN112567310A (zh)
WO (1) WO2020042168A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111605282A (zh) * 2020-05-29 2020-09-01 昆山国显光电有限公司 柔性显示面板的贴合方法及初装体
CN111619126A (zh) * 2020-05-19 2020-09-04 上海摩勤智能技术有限公司 一种柔性屏贴合设备及方法、存储介质

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020263631A1 (en) * 2019-06-26 2020-12-30 Applied Materials, Inc. Flexible multi-layered cover lens stacks for foldable displays
CN113450657B (zh) * 2021-06-30 2023-02-24 云谷（固安）科技有限公司 曲面显示装置制备方法及曲面显示装置制备装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105280836A (zh) * 2015-09-10 2016-01-27 上海和辉光电有限公司 一种制备柔性保护层的方法及柔性显示器件
US20160033994A1 (en) * 2011-08-17 2016-02-04 Apple Inc. Bi-stable spring with flexible display
CN106104410A (zh) * 2014-03-13 2016-11-09 株式会社半导体能源研究所 电子设备
CN107329527A (zh) * 2017-07-06 2017-11-07 广东欧珀移动通信有限公司 移动终端保护膜及制备方法、移动终端
CN107678587A (zh) * 2017-09-27 2018-02-09 深圳市骏达光电股份有限公司 触摸感应层及其制作方法
CN107976725A (zh) * 2018-01-19 2018-05-01 京东方科技集团股份有限公司 一种保护膜及其制作方法、柔性面板、显示装置及其制作方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200531986A (en) * 2004-03-16 2005-10-01 Optimax Tech Corp Protection film and its manufacturing method
KR20150107476A (ko) * 2014-03-14 2015-09-23 엘지전자 주식회사 이동 단말기
GB201409063D0 (en) * 2014-05-21 2014-07-02 Dupont Teijin Films Us Ltd Coated polyester films
CN104167513A (zh) * 2014-07-22 2014-11-26 京东方科技集团股份有限公司 柔性显示面板的制作方法和柔性显示装置
US20160150062A1 (en) * 2014-11-26 2016-05-26 Weon phyo RHEE Protective film using strengthened glass for display screen
CN105176370B (zh) * 2015-07-27 2018-05-22 东莞市纳利光学材料有限公司 一种可贴合弧边的保护膜及其制造方法
CN205439382U (zh) * 2015-12-23 2016-08-10 黄闵晨 热压曲面多层抛弃式光学屏幕保护膜
GB2549104A (en) * 2016-04-04 2017-10-11 Tech 21 Licensing Ltd A screen protector for a mobile electronic device with a touch screen
CN205812114U (zh) * 2016-06-30 2016-12-14 东莞捷尔信实业有限公司 一种曲面屏手机的钢化玻璃膜
JP2019529963A (ja) * 2016-07-01 2019-10-17 スリーエム イノベイティブ プロパティズ カンパニー 低Ｔｇポリウレタン保護ディスプレイフィルム
US10591761B2 (en) * 2016-10-21 2020-03-17 Samsung Electronics Co., Ltd. Flexible plastic substrate and display device including same
CN207091341U (zh) * 2017-05-19 2018-03-13 深圳市金耀辉科技有限公司 一种曲面屏保护膜
KR102422668B1 (ko) * 2017-07-07 2022-07-19 삼성전자주식회사 적층 필름, 및 적층 필름을 포함하는 표시 장치
CN108329861A (zh) * 2018-02-11 2018-07-27 江苏斯迪克新材料科技股份有限公司 一种应用于曲面显示屏的热定型保护膜

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160033994A1 (en) * 2011-08-17 2016-02-04 Apple Inc. Bi-stable spring with flexible display
CN106104410A (zh) * 2014-03-13 2016-11-09 株式会社半导体能源研究所 电子设备
CN105280836A (zh) * 2015-09-10 2016-01-27 上海和辉光电有限公司 一种制备柔性保护层的方法及柔性显示器件
CN107329527A (zh) * 2017-07-06 2017-11-07 广东欧珀移动通信有限公司 移动终端保护膜及制备方法、移动终端
CN107678587A (zh) * 2017-09-27 2018-02-09 深圳市骏达光电股份有限公司 触摸感应层及其制作方法
CN107976725A (zh) * 2018-01-19 2018-05-01 京东方科技集团股份有限公司 一种保护膜及其制作方法、柔性面板、显示装置及其制作方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3835917A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111619126A (zh) * 2020-05-19 2020-09-04 上海摩勤智能技术有限公司 一种柔性屏贴合设备及方法、存储介质
CN111605282A (zh) * 2020-05-29 2020-09-01 昆山国显光电有限公司 柔性显示面板的贴合方法及初装体

Also Published As

Publication number Publication date
CN112567310A (zh) 2021-03-26
EP3835917A4 (en) 2021-08-11
EP3835917A1 (en) 2021-06-16
US20210185158A1 (en) 2021-06-17

Similar Documents

Publication Publication Date Title
WO2020042168A1 (zh) 柔性保护膜、曲面显示屏及终端
US11069264B2 (en) Cover structure, manufacturing method thereof and display device
CN111286280B (zh) 一种屏幕拼接结构及其形成方法
CN110783389A (zh) 柔性显示屏的制作方法及待剥离临时基板的柔性显示屏
US8693174B2 (en) Touch display assembly structure
US20200198300A1 (en) Flexible glass membrane,method for manufacturing the same,and electronic device comprising the same
WO2021003876A1 (zh) 光学胶、显示面板及光学胶的制作方法
CN207875019U (zh) 一种适合高水滴角手机玻璃屏幕防护用的曲面保护贴
US20200205306A1 (en) Flexible glass membrane,method for manufacturing the same,and electronic device comprising the same
CN206396112U (zh) 一种电子显示屏内防爆膜
US20170290182A1 (en) Screen protector for a mobile electronic device with a touch screen
CN112140523A (zh) 屏幕保护膜组件和屏幕保护膜的贴膜器
WO2022088944A1 (zh) 折叠显示屏组件
WO2019218492A1 (zh) 一种显示器件及3d玻璃盖板的贴合方法
CN113314031B (zh) 一种显示面板及其制备方法
CN212115384U (zh) 曲面手机用保护膜
CN212610400U (zh) 一种用于曲面手机且具有防窥效果的3d保护膜
TW201637541A (zh) 殼體及其製造方法
KR20170067977A (ko) 3d 곡면부가 형성된 휴대용 단말기의 보호커버 및 이의 제조방법
WO2022178664A9 (zh) 显示模组及其制造方法、显示装置
CN113980595A (zh) Ab胶层及其制造方法、具有消泡功能的保护膜及其制造方法和贴膜方法以及保护膜套装
CN213814162U (zh) 基底、光学元件和电子设备
JP2021091135A5 (zh)
JPWO2018194074A1 (ja) 積層体及びその製造方法
TWI239893B (en) Method to improve film property

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18932177

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018932177

Country of ref document: EP

Effective date: 20210310