WO2021043159A1 - 一种柔性显示屏及其制备方法和电子设备 - Google Patents

一种柔性显示屏及其制备方法和电子设备 Download PDF

Info

Publication number
WO2021043159A1
WO2021043159A1 PCT/CN2020/112990 CN2020112990W WO2021043159A1 WO 2021043159 A1 WO2021043159 A1 WO 2021043159A1 CN 2020112990 W CN2020112990 W CN 2020112990W WO 2021043159 A1 WO2021043159 A1 WO 2021043159A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
display screen
flexible display
adjustment
touch
Prior art date
Application number
PCT/CN2020/112990
Other languages
English (en)
French (fr)
Inventor
张君勇
田正
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 US17/630,558 priority Critical patent/US20220261039A1/en
Priority to EP20861229.1A priority patent/EP4020576A4/en
Publication of WO2021043159A1 publication Critical patent/WO2021043159A1/zh

Links

Images

Classifications

    • 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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • 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
    • 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
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • 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
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • 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

Definitions

  • This application relates to the field of terminal technology, and in particular to a flexible display screen, a preparation method thereof, and electronic equipment.
  • OLED Organic Light Emitting Diode
  • the foldable electronic device includes: a middle frame and a flexible display screen arranged on the middle frame.
  • the middle frame includes a first middle frame 7a and a second middle frame.
  • the middle frame 7b, the first middle frame 7a and the second middle frame 7b are rotatably connected by a rotating member 6.
  • the flexible display screen includes: a display panel, a touch panel 3, a polarizer 2 and a cover plate 1, and the display panel includes a back plate 5 and the display layer 4 provided on the back plate 5.
  • the first middle frame 7a and the second middle frame 7b are folded, and the flexible OLED display screen is bent.
  • FIG. 3 when the flexible OLED display is bent, each film layer in the flexible OLED display is bent.
  • the film in the display screen is prone to breakage, resulting in the failure of the display screen function.
  • the embodiments of the application provide a flexible display screen, a preparation method thereof, and electronic equipment, which reduce the risk of breakage of the touch layer during the bending process of the flexible display screen, increase the impact resistance of the flexible display screen in the vertical and horizontal directions, and solve
  • the flexible display screen is easy to break during the bending process, which leads to the problem of the failure of the display screen function.
  • the first aspect of the embodiments of the present application provides a flexible display screen, which at least includes:
  • the first adjustment layer and the second adjustment layer function as a neutral layer for adjusting the bending of the flexible display screen, so that the force on the touch film layer is reduced when the touch film layer is bent, and the touch film layer is not prone to breakage during the bending process.
  • the first adjustment layer and the second adjustment layer can also adjust the matching degree of the temperature and humidity deformation system of the upper and lower layers of the touch film layer, reducing the risk of the touch film layer bending and breaking due to internal stress under temperature and humidity.
  • the flexible display screen includes the first adjustment layer and the second adjustment layer, the impact resistance of the flexible display screen is increased, so that after the flexible display screen is unfolded, under external impact and other conditions, the flexible display screen will move in the vertical and horizontal directions.
  • the first adjustment layer and the second adjustment layer solve the problem that the flexible display screen is easy to break during the bending process, which causes the display function to fail, and the vertical and horizontal openings of the flexible display screen are increased. Shock resistance in the horizontal direction.
  • the first adjustment layer is a cycloolefin polymer COP layer
  • the second adjustment layer is a glue layer. In this way, the second adjustment layer realizes the stress isolation effect on the touch film layer on the one hand, and realizes the function of fixing the touch film layer on the first adjustment layer on the other hand.
  • the Young's modulus of the first adjustment layer is greater than the Young's modulus of the second adjustment layer.
  • a two-layer structure of high and low Young's modulus is added between the touch film layer and the display panel to adjust the stress state of the touch film layer, match the temperature and humidity coefficients of the upper and lower layers of the touch film layer, and improve the structural strength of the flexible display screen.
  • the Young's modulus of the first adjustment layer is 2.0 GPa
  • the Young's modulus of the second adjustment layer is 80-800 kPa.
  • the thickness of the first adjustment layer is 20-40 ⁇ m.
  • the thickness of the second adjustment layer is 15-25 ⁇ m.
  • the adhesive layer is a pressure-sensitive adhesive PSA or an optical adhesive OCA.
  • the second aspect of the embodiments of the present application provides a flexible display screen, which at least includes:
  • the first adhesive layer has a stress isolation effect, so that the stress on the touch film layer is reduced during the bending process, so the touch film layer is less likely to be disconnected during the bending process. . Therefore, in the embodiments of the present application, by arranging the touch film layer on the first adhesive layer, the first adhesive layer has a stress isolation effect on the touch film layer, so that the touch film layer is not easy to bend during the bending process. An open circuit occurs, ensuring the normal use of the touch film layer.
  • the touch film layer includes: a peeling layer, a metal bridging layer provided on the peeling layer, and a first layer provided on the peeling layer and the metal bridging layer.
  • the second insulating layer on the two touch electrodes.
  • One of the first touch electrode and the second touch electrode is disconnected at the intersection and connected through the metal bridge layer.
  • it further includes: a polarizer and a second adhesive layer, and the second adhesive layer is located between the polarizer and the touch film layer.
  • the polarizer plays the role of improving the brightness of the screen, and the polarizer is fixed on the touch film layer through the second adhesive layer.
  • it further includes: a protective layer and a third adhesive layer, the third adhesive layer being located between the protective layer and the second adhesive layer.
  • the protective layer protects the flexible display screen.
  • a third aspect of the embodiments of the present application provides an electronic device, which at least includes: any one of the above-mentioned flexible display screens, a middle frame, and a rear case, where the middle frame is located between the flexible display screen and the rear case.
  • the touch film layer in the flexible display screen is not easily broken during the bending process.
  • the flexible display screen includes the first adjustment layer and the second adjustment layer, the impact resistance of the flexible display screen is increased, so that after the flexible display screen is unfolded, under external impact and other conditions, the flexible display screen of the electronic device is vertical and horizontal. It is not easy to break in the horizontal direction. Therefore, the first adjustment layer and the second adjustment layer are arranged in the flexible display screen to solve the problem of the display function failure due to the easy breakage of the flexible display screen during the bending process, and the flexibility is increased. The vertical and horizontal shock resistance when the display is unfolded.
  • the electronic device is a foldable electronic device.
  • the electronic device can be folded and unfolded for use. After being folded, any of the primary and secondary screens can be used for display, and a larger display area can be provided after unfolding.
  • the middle frame includes at least a first middle frame and a second middle frame, and the first middle frame and the second middle frame are rotatably connected by a rotating member.
  • the first middle frame and the second middle frame can be rotatably connected, thereby ensuring that the electronic device can be folded and unfolded.
  • the flexible display screen is a curled screen with two ends curled toward the rear shell.
  • the electronic device is an electronic device with a curling screen, and the setting of the curling screen ensures that the electronic device has a high screen-to-body ratio.
  • the fourth aspect of the embodiments of the present application provides a method for manufacturing a flexible display screen, the method including:
  • a touch film layer a display panel, a first adjustment layer, a second adjustment layer, and an adhesive layer, wherein the first adjustment layer is a cycloolefin polymer COP layer, and the second adjustment layer is an adhesive layer;
  • the adhesive layer is arranged between the first adjustment layer and the light emitting surface of the display panel to form a flexible display screen.
  • the adhesive layer is disposed between the first adjustment layer and the light-emitting surface of the display panel
  • the first adjustment layer and the second adjustment layer can adjust the bending neutrality of the flexible display screen. Layer, so that the force on the touch film layer is reduced when the touch film layer is bent, and the touch film layer is not prone to breakage during the bending process.
  • the first adjustment layer and the second adjustment layer can also adjust the matching degree of the temperature and humidity deformation system of the upper and lower layers of the touch film layer, reducing the risk of the touch film layer bending and breaking due to internal stress under temperature and humidity.
  • the flexible display screen includes the first adjustment layer and the second adjustment layer
  • the impact resistance of the flexible display screen is increased, so that after the flexible display screen is unfolded, under external impact and other conditions, the flexible display screen will move in the vertical and horizontal directions. It is not easy to break, so the first adjustment layer and the second adjustment layer solve the problem that the flexible display screen is easy to break during the bending process, which causes the display function to fail, and the vertical and horizontal openings of the flexible display screen are increased. Shock resistance in the horizontal direction.
  • the providing the touch film layer includes:
  • a first touch electrode and a second touch electrode that cross each other and are insulated are formed on the first insulating layer, and one of the first touch electrode and the second touch electrode is intersecting Is disconnected from each other and connected to the metal bridging layer through the via hole;
  • the substrate and the peeling layer are separated to form the touch film layer.
  • the peeling layer of the touch film layer is in contact with the second adjustment layer, so that the metal layer in the touch film layer (such as a metal bridge layer) and the first adjustment layer are separated from each other.
  • the second adjustment layer so the stress received by the first adjustment layer during the bending process is not easy to cause the metal layer in the touch film layer to be disconnected.
  • the arranging the second adjustment layer between the touch film layer and the first adjustment layer includes:
  • the second adjustment layer is formed on the first adjustment layer.
  • the touch control film layer is arranged on the side of the second adjustment layer facing away from the first adjustment layer.
  • the arranging the adhesive layer between the first adjustment layer and the light emitting surface of the display panel includes:
  • the first adjustment layer and the adhesive layer are bonded to form the flexible display screen.
  • the light-emitting surface of the display panel is bonded with the adhesive layer to form the flexible display screen.
  • the fifth aspect of the embodiments of the present application provides a method for manufacturing a flexible display screen, the method includes: the method includes:
  • the adhesive layer is arranged between the touch film layer and the light emitting surface of the display panel to form a flexible display screen.
  • the adhesive layer By arranging the adhesive layer between the touch film layer and the light-emitting surface of the display panel, in the flexible display screen formed in this way, there is an adhesive layer between the touch film layer and the display panel.
  • the layer plays a role of stress isolation, so that the stress on the touch film layer is reduced during the bending process, so the touch film layer is not prone to open circuit risk during the bending process. Therefore, in the embodiments of the present application, the adhesive layer has a stress isolation effect on the touch film layer, so that the touch film layer is not easily broken during the bending process, and the normal use of the touch film layer is ensured.
  • the providing the touch film layer includes:
  • a first touch electrode and a second touch electrode that cross each other and are insulated are formed on the first insulating layer, and one of the first touch electrode and the second touch electrode is intersecting Is disconnected from each other and connected to the metal bridging layer through the via hole;
  • the substrate and the peeling layer are separated to form the touch film layer.
  • the peeling layer of the touch film layer is in contact with the adhesive layer, so that the metal layer in the touch film layer (such as the metal bridge layer) and the display panel are separated from each other between the peeling layer and the adhesive layer Therefore, the peeling layer and the adhesive layer can play the role of stress isolation on the metal layer in the touch film layer, so that the flexible display is not easy to cause the metal layer in the touch film layer to be disconnected during the bending process.
  • the arranging the adhesive layer between the touch film layer and the light emitting surface of the display panel includes:
  • the light emitting surface of the display panel is bonded with the adhesive layer to form the flexible display screen.
  • FIG. 1 is a schematic cross-sectional view of the middle frame and the display screen of the existing folding mobile phone after unfolding;
  • FIG. 2 is a schematic cross-sectional view of the middle frame and the display screen of the existing folding mobile phone after being folded;
  • Figure 3 is a schematic cross-sectional view of a display screen of a conventional folding mobile phone after being folded
  • FIG. 4 is a schematic structural diagram of an electronic device provided by an embodiment of the application after unfolding
  • Fig. 5 is an exploded schematic diagram of an electronic device provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of a bent structure of an electronic device provided by an embodiment of the application.
  • FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the application after being folded
  • FIG. 8 is a schematic diagram of a cross-sectional structure of an existing flexible display screen
  • FIG. 9 is a schematic diagram of a cross-sectional structure of a flexible display screen in an electronic device provided by an embodiment of the application.
  • FIG. 10 is a schematic diagram of another cross-sectional structure of a flexible display screen in an electronic device provided by an embodiment of the application;
  • FIG. 11 is a schematic diagram of another cross-sectional structure of a flexible display screen in an electronic device provided by an embodiment of the application;
  • FIG. 12 is a schematic diagram of preparing a flexible display screen in an electronic device provided by an embodiment of the application.
  • FIG. 13 is a schematic diagram of a cross-sectional structure of a flexible display screen in an electronic device provided by an embodiment of the application;
  • FIG. 14 is a schematic cross-sectional structure diagram of a folded middle frame and a flexible display screen of an electronic device according to an embodiment of the application;
  • 15 is a schematic diagram of a cross-sectional structure of a flexible display screen in an electronic device provided by an embodiment of the application;
  • 16 is a schematic diagram of the preparation of a flexible display screen in an electronic device provided by an embodiment of the application.
  • 17 is a schematic diagram of a cross-sectional structure of a flexible display screen in an electronic device provided by an embodiment of the application;
  • 18 is a schematic diagram of the maximum principal strain of each film layer of the flexible display screen of the electronic device provided by an embodiment of the application in two scenarios;
  • FIG. 19 is a schematic diagram of the maximum principal strain of the touch layer of the flexible display screen of the electronic device provided by an embodiment of the application in two scenarios.
  • An electronic device provided by an embodiment of this application may include, but is not limited to, a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a walkie-talkie, a netbook, a POS machine, and a personal computer.
  • UMPC ultra-mobile personal computer
  • Mobile or fixed terminals with flexible display screens such as digital assistants (personal digital assistants, PDAs), wearable devices, virtual reality devices, or car front-mounted devices.
  • the mobile phone 100 is the above-mentioned electronic device as an example for description.
  • the mobile phone 100 provided in the embodiment of the present application may be a foldable mobile phone, or may be a mobile phone with a curled screen, or may also be other displays.
  • a foldable mobile phone 100 is taken as an example.
  • Fig. 4 shows the unfolded structure of the foldable mobile phone 100. As shown in Fig. 4, when the mobile phone 100 is folded, it can be folded according to the dotted line in Fig. 4. Referring to FIG. 4 and FIG.
  • the mobile phone 100 may include: a flexible display screen 10, a middle frame 20, a circuit board 40, a battery 50 and a rear case 30.
  • the flexible display screen 10 and the rear case 30 are respectively located on both sides of the middle frame 20, the circuit board 40 and the battery 50 may be located between the middle frame 20 and the rear case 30, or the circuit board 40 and the battery 50 may also be located Between the middle frame 20 and the flexible display screen 10.
  • the middle frame 20 may include: a first middle frame 21 and a second middle frame 22, and a rotating member 23 may pass between the first middle frame 21 and the second middle frame 22 (for example, the rotating member 23 may be a rotating shaft). , Hinge or flexible board) connected by rotation. In this way, the first middle frame 21 and the second middle frame 22 in the mobile phone 100 can be folded and unfolded around the rotating member 23.
  • the first middle frame 21 and the second middle frame 22 may be metal middle frames.
  • the first middle frame 21 and the second middle frame 22 may also be middle frames composed of ceramic and metal.
  • the frames in the first middle frame 21 and the second middle frame 22 are ceramic frames, and the first middle frame
  • the middle plates in the frame 21 and the second middle frame 22 are metal middle plates, and the ceramic frame and the metal middle plate constitute the first middle frame 21 and the second middle frame 22.
  • the materials of the first middle frame 21 and the second middle frame 22 include but are not limited to metals and ceramics, and may also be other materials.
  • the first middle frame 21 and the second middle frame 22 can be folded left and right according to the dashed line in FIG. 4.
  • the first middle frame 21 and the second middle frame 22 can also be folded up and down, diagonally folded, or folded at any other angle.
  • the mobile phone 100 shown in FIG. 5 includes two middle frames 20, a first middle frame 21 and a second middle frame 22, so as to realize the folding of the two display screens in the mobile phone 100.
  • the mobile phone 100 may also include three middle frames, so that the three display screens of the mobile phone 100 may be foldable. The number of foldable display screens in the mobile phone 100 is specifically set according to actual needs.
  • one of the first middle frame 21 and the second middle frame 22 may be the middle frame corresponding to the main screen of the mobile phone 100, and the other may be the middle frame corresponding to the secondary screen of the mobile phone 100, for example, the first middle frame 21 may be the main middle frame corresponding to the main screen, and the second middle frame 22 may be the auxiliary middle frame corresponding to the auxiliary screen.
  • the main screen and the auxiliary screen of the mobile phone 100 may be opposite, or the main screen and the auxiliary screen of the mobile phone 100 may be away from each other.
  • the main screen and the auxiliary screen of the mobile phone 100 are separated from each other, that is, after the mobile phone 100 is folded, the front and back sides of the mobile phone 100 are both displayed At this time, the user can use the main screen to display, or use the secondary screen to display.
  • the rear case 30 when the mobile phone 100 includes the first middle frame 21 and the second middle frame 22, the rear case 30 may be the rear case 30 shown in FIG. Two middle frame 22 on one side.
  • the rear case 30 may be a flexible rear case made of a flexible material, for example, the rear case 30 is a bendable flexible glass rear case, or the rear case 30 is a bendable plastic rear case.
  • the rear case 30 may include a first rear case and a second rear case (not shown), for example, the first rear case is located on one side of the first middle frame 21, and the second rear case is located on the second middle frame 22.
  • One side of the two middle frames is provided with a rear shell corresponding to each.
  • a bendable flexible substrate is used between the first rear shell and the second rear shell, so that when folded, the first rear shell and the second rear shell are folded around the flexible substrate.
  • the first rear case and the second rear case may be metal rear cases, or the first rear case and the second rear case may also be glass rear cases, or the first rear case.
  • the first back shell and the second back shell may also be ceramic back shells. It should be noted that the materials of the first rear shell and the second rear shell include but are not limited to metal, glass or ceramic.
  • the circuit board 40 may include: a first circuit board 41 and a second circuit board 42.
  • the first circuit board 41 and the second circuit board 42 may be electrically connected through a flexible circuit board (FPC).
  • the first circuit board 41 may be located in the first middle frame 21, and the second circuit board 42 may be located in the second middle frame 22.
  • One of the first circuit board 41 and the second circuit board 42 may be a main circuit board (ie, a main board), and the other may be an auxiliary circuit board.
  • the battery 50 may include: a first battery 51 and a second battery 52.
  • the first battery 51 may be located at the position of the dotted line on the first middle frame 21 in FIG. 5
  • the second battery 52 may be located at the position of the dotted line on the second middle frame 22 in FIG. 5.
  • the positions where the first battery 51 and the second battery 52 are arranged include, but are not limited to, the positions of the dotted lines of the first middle frame 21 and the second middle frame 22 in FIG. 5.
  • the first battery 51 and the second battery 52 can be connected to the charging management module and the circuit board 40 through a power management module.
  • the power management module receives input from the battery 50 and/or the charging management module, and is a processor, internal memory, and external The memory, the flexible display screen 10, the camera, and the communication module are supplied with power.
  • the power management module can also be used to monitor the capacity of the battery 50, the number of cycles of the battery 50, and the health status of the battery 50 (leakage, impedance) and other parameters.
  • the power management module may be provided in the processor of the circuit board 40.
  • the power management module and the charging management module may also be provided in the same device.
  • the flexible display screen 10 may be an OLED display screen.
  • the flexible display screen 10 When the mobile phone 100 is folded, the flexible display screen 10 can be bent along the arrow direction in FIG. 6. After being folded, as shown in FIG. 7, the flexible display screen 10 is bent at one end of the first middle frame 21 and the second middle frame 22.
  • the second middle frame 22 has an end cover 221 at one end away from the first middle frame 21. After the first middle frame 21 and the second middle frame 22 are folded, the display area on the first middle frame 21 is The width is smaller than the width of the display area on the second middle frame 22, that is, after the mobile phone 100 is folded, the sizes of the two display screens are different.
  • a flash 222 and a camera 223 may be provided on the end cover 221.
  • the end cover 221 can be fixed on the second middle frame 22 by clamping, welding or integral molding.
  • the camera 223 and the flash 222 can be set, and on the other hand, the user's mobile phone 100 is not easily accessible to the display screen, which facilitates the user to hold the mobile phone 100.
  • the structure of the flexible display screen 10 is as shown in FIG. 8, which may include: a back plate 5, a display panel 4 provided on the back plate 5, a touch panel 3, a polarizer 2 and a cover plate 1, wherein the display The panel 4 and the touch panel 3 are connected through an adhesive layer 8b, and the touch panel 3 and the polarizer 2 are connected through an adhesive layer 8a.
  • the function of the polarizer 2 is mainly to increase the brightness of the screen, and is not necessary for display, so it can be omitted.
  • the conventional touch panel 3 may include: a support layer 3b and a touch layer 3a provided on the support layer 3b.
  • the support layer 3b of the touch panel 3 is connected to the display panel 4 through an adhesive layer 8b, and the touch layer 3a of the touch panel 3 is connected to the polarizer 2 through an adhesive layer 8a.
  • each film layer is strained under the stress of the bending part, and the material of the support layer 3b is often selected from Cyclo-olefin polymer (COP), and the COP material is brittle, so The stress received during the bending process easily exceeds the material limit, resulting in the support layer 3b being prone to fracture, but the fracture of the support layer 3b easily breaks the electrode layer of the touch layer 3a (due to the patterned design of part of the electrode layer in the touch layer 3a) On the support layer 3b), which causes a partial area of the touch layer 3a to fail.
  • COP Cyclo-olefin polymer
  • an embodiment of the present application provides a flexible display screen 10, which reduces the risk of failure of the touch layer in the flexible display screen 10 during the bending process.
  • the flexible display screen 10 may include a display panel 11, a first adhesive layer 12 a, a touch film layer 13, a second adhesive layer 12 b, and a polarizer 14 stacked in sequence.
  • a first adhesive layer 12 a is provided between the display panel 11 and the touch film layer 13
  • a second adhesive layer 12 b is provided between the touch film layer 13 and the polarizer 14.
  • a first adhesive layer 12a is provided on the light-emitting surface of the display panel 11, the touch film layer 13 is fixed on the light-emitting surface of the display panel 11 through the first adhesive layer 12a, and the touch film layer 13 faces the side of the polarizer 14
  • a second adhesive layer 12b is provided thereon, and the polarizer 14 is fixed on the touch film layer 13 through the second adhesive layer 12b.
  • the light-emitting surface of the display panel 11 is the side where light from the light-emitting unit in the display panel 11 emits.
  • the light-emitting direction of the display panel 11 is upward, that is, the display panel 11 is top-emitting. Therefore, the display panel 11 The light emitting surface of is the top surface of the display panel 11.
  • the first adhesive layer 12a is provided between the display panel 11 and the touch film layer 13, so that when the flexible display screen 10 is bent, the first adhesive layer 12a has a stress isolation effect, thereby As a result, the stress on the touch film layer 13 is reduced during the bending process, so the touch film layer 13 is less likely to be disconnected during the bending process.
  • the support layer 3b in the touch panel is reduced, which on the one hand makes the overall thickness of the flexible display screen 10 thinner, and on the other hand, On the one hand, it eliminates the risk that the support layer 3b is easily broken and the touch film layer 13 is disconnected.
  • the first adhesive layer 12a has a stress isolation effect on the touch film layer 13, so that the touch film layer 13 is It is not easy to be disconnected during the bending process, which ensures the normal use of the touch film layer 13.
  • the material of the first adhesive layer 12a and the second adhesive layer 12b may be Pressure Sensitive Adhesive (PSA).
  • PSA Pressure Sensitive Adhesive
  • OCA optically clear adhesive
  • the thickness of the adhesive layer formed by the pressure-sensitive adhesive and the optical adhesive is different.
  • the thickness of the adhesive layer is different.
  • the thickness of the formed adhesive layer is relatively large.
  • the thickness of the formed adhesive layer is relatively large.
  • the first adhesive layer 12a and the second adhesive layer 12b are made of pressure sensitive adhesive, which ensures that the thickness of the first adhesive layer 12a and the second adhesive layer 12b is small, and the thickness of the flexible display screen 10 Thinning.
  • the thickness of the formed first adhesive layer 12a and the second adhesive layer 12b may be 50-100 ⁇ m.
  • the thickness of the formed first adhesive layer 12a and the second adhesive layer 12b may be 15-25 ⁇ m, for example, the first adhesive layer 12a and the second adhesive layer 12b
  • the thickness of the layer 12a and the second adhesive layer 12b may be 18 ⁇ m, or the thickness of the first adhesive layer 12a and the second adhesive layer 12b may be 23 ⁇ m.
  • the touch film layer 13 may include: a lift-off layer 135 (Laser Lift-Off, LLO), a metal bridge layer 133 provided on the lift-off layer 135, a metal bridge layer 133 covering the lift-off layer 135, and metal
  • the first touch electrode 131 and the second touch electrode 132 are arranged alternately, and the first touch electrode 131 and the second touch electrode 132 are insulated and arranged at the intersection, for example, the first touch electrode 131 and the second touch electrode 132 are insulated from each other.
  • One of the electrodes 132 is disconnected at the intersection.
  • the first touch electrode 131 is disconnected at the intersection, and the disconnected ends of the first touch electrode 131 pass through the first insulating layer 136.
  • the via 134 is electrically connected to the metal bridging layer 133, so that the disconnected first touch electrode 131 is connected through the metal bridging layer 133 and the via 134, so that the first touch electrode 131 and the second touch electrode 132 are in contact with each other. Insulation at the intersection.
  • the first touch electrode 131 and the second touch electrode 132 may also be provided on the peeling layer 135, and the metal bridge layer 133 is provided on the first insulating layer 136, so that the metal frame The bridge layer 133 is located on the first touch electrode 131 and the second touch electrode 132.
  • the position where the metal bridge layer 133 is provided includes but is limited to the position shown in FIG. 10, and the metal bridge layer 133 electrically connects the touch electrodes disconnected at the intersection.
  • one of the first touch electrode 131 and the second touch electrode 132 may be a driving electrode (Tx), and the other may be a receiving electrode (Rx), for example, the first touch electrode (Rx).
  • the electrode 131 may be Tx
  • the second touch electrode 132 may be Rx.
  • the first touch electrode 131, the second touch electrode 132, and the metal bridging layer 133 may be made of metal materials.
  • the first touch electrode 131 and the second touch electrode 132 may be made of oxide.
  • Indium tin (ITO) may also be indium zinc oxide (IZO), and the material of the metal bridging layer 133 may be copper metal or silver.
  • the metal material of the via hole can be silver paste.
  • the first insulating layer 136 and the second insulating layer 137 may be organic insulating layers.
  • the material of the peeling layer 135 may be Polyimide (PI).
  • the materials of the first touch electrode 131, the second touch electrode 132, the metal bridge layer 133, the first insulating layer 136, the second insulating layer 137, and the peeling layer 135 include but are not limited to the above materials.
  • the material of the peeling layer 135 may be polyimide (PI), so that the first adhesive layer 12a and the peeling layer 135 are both organic film layers with the same properties, so the display panel 11 passes through the first adhesive layer 12a.
  • PI polyimide
  • the adhesion between the first adhesive layer 12a and the peeling layer 135 is greater, and the adhesion between the display panel 11 and the touch film layer 13 is greater Therefore, the display panel 11 and the touch film layer 13 are not easily peeled off during the bending process.
  • the polarizer 14 is adhered to the second insulating film layer of the touch film layer 13 through the second adhesive layer 12b, and the second insulating layer 137 and the second adhesive layer 12b are both organic film layers with the same properties, so the adhesion between the second adhesive layer 12b and the second insulating film layer is greater, so that the polarizer 14 and the touch film layer 13 The adhesive force between them is greater, and during the bending process, the polarizer 14 and the touch film layer 13 are not easily peeled off.
  • the thickness of the touch film layer 13 may be 6-15 ⁇ m, for example, the thickness of the touch film layer 13 may be 7 ⁇ m, or the thickness of the touch film layer 13 may be 10 ⁇ m.
  • the thickness of the peeling layer 135 may be 2-5 ⁇ m, for example, the thickness of the peeling layer 135 may be 3 ⁇ m.
  • the thickness of the metal bridging layer 133 may be 0.1-0.4 ⁇ m, for example, the thickness of the metal bridging layer 133 may be 0.2 ⁇ m.
  • the thickness of the first insulating layer 136 may be 1.0-2 ⁇ m, for example, the thickness of the first insulating layer 136 may be 1.8 ⁇ m.
  • the thickness of the first touch electrode 131 and the second touch electrode 132 may be 0.07-0.1 ⁇ m, for example, the thickness of the first touch electrode 131 and the second touch electrode 132 may be 0.08 ⁇ m.
  • the thickness of the second insulating layer 137 may be 1.0-2 ⁇ m, for example, the thickness of the second insulating layer 137 may be 1.8 ⁇ m.
  • a touch film layer 13 is provided.
  • a release layer 135 LLO
  • the material of the substrate 130 may be cycloolefin.
  • Polymer (COP) cycloolefin.
  • a metal bridging layer 133 is formed on the peeling layer 135, a first insulating layer 136 is covered on the peeling layer 135 and the metal bridging layer 133, and a via hole electrically connected to the metal bridging layer 133 is formed on the first insulating layer 136, A patterned first touch electrode 131 and a second touch electrode 132 are formed on the first insulating layer 136.
  • the first touch electrode 131 is electrically connected to the metal bridging layer 133 through the via 134, and the first insulating layer 136 is electrically connected to the metal bridge layer 133.
  • the first touch electrode 131 and the second touch electrode 132 are covered with a second insulating layer 137 to form a touch panel.
  • a laser is used to irradiate the touch panel. Under the action of the laser, the hydrogen bond force between the peeling layer 135 and the substrate 130 is destroyed, so that the substrate 130 and the peeling layer 135 are peeled off along the dashed line in FIG. 11 to obtain a touch film layer 13.
  • the polarizer 14 is fixed on the second insulating layer 137 of the touch film layer 13 through the second adhesive layer 12b.
  • the display panel 11 is fixed on the peeling layer 135 of the touch film layer 13 through the first adhesive layer 12a (for example, fixed on the peeling layer 135 on the side facing away from the metal bridging layer 133) to form the flexible display screen 10.
  • the fixing sequence between the touch film layer 13 and the polarizer 14 and the display panel 11 includes but is not limited to the sequence of fixing the polarizer 14 first and then fixing the display panel 11 as shown in FIG.
  • the display panel 11 and the peeling layer 135 are fixed by the first adhesive layer 12a, and the polarizer 14 is fixed on the second insulating layer 137 by the second adhesive layer 12b.
  • the flexible display screen 10 may further include a protective layer, and the protective layer may include a first protective layer 16 and a second protective layer 17.
  • the first protective layer 16 is fixed on the polarizer 14 through the third adhesive layer 12c
  • the second protective layer 17 is fixed on the first protective layer 16 through the fourth adhesive layer 12d.
  • the material of the first protective layer 16 and the second protective layer 17 may be PI.
  • the material of the first protective layer 16 may be PI
  • the second protective layer 17 may be a flexible hard board (Hard Coat, HC)
  • the material of the third adhesive layer 12c and the fourth adhesive layer 12d may be optical glue ( OCA), or pressure sensitive adhesive (PSA).
  • the display panel 11 may be an OLED display panel.
  • the display panel 11 may include: a flexible substrate 111, a back film 113 and a display layer 115.
  • the flexible substrate 111 is provided with a fifth adhesive layer 112
  • the back film 113 is fixed on the flexible substrate 111 through the fifth adhesive layer 112
  • the back film 113 is provided with a sixth adhesive layer 114 on the side facing the display layer 115.
  • the layer 115 is fixed on the back film 113 by the sixth adhesive layer 114.
  • the display layer 115 is adhered to the release layer 135 through the first adhesive layer 12a.
  • the display layer 115 may include a thin film transistor layer (TFT) and a light-emitting unit (not shown), where the light-emitting unit may include a cathode, an anode, and a plurality of organic light-emitting layers arranged between the cathode and the anode ( Not shown).
  • TFT thin film transistor layer
  • the light-emitting unit may include a cathode, an anode, and a plurality of organic light-emitting layers arranged between the cathode and the anode ( Not shown).
  • the flexible substrate 111 plays a supporting role
  • the back film 113 plays a role of protecting the display layer 115.
  • the material of the back film 113 may include but is not limited to PI, and the material of the fifth adhesive layer 112 and the sixth adhesive layer 114 may be optical adhesive (OCA) or pressure sensitive adhesive (PSA).
  • OCA optical adhesive
  • PSA pressure sensitive adhesive
  • the flexible display screen 10 may further include: an adjustment layer 15, which is located between the touch film layer 13 and the first adhesive layer 12a, for example, a touch film layer 13 is provided on one side of the adjustment layer 15, and the other side of the adjustment layer 15 is fixed on the display panel 11 through the first adhesive layer 12 a.
  • the adjustment layer 15 can function as a neutral layer for adjusting the bending of the flexible display screen 10, so that the force on the touch film layer 13 is reduced when the touch film layer 13 is bent. It is not easy to break during the bending process.
  • the adjustment layer 15 can also adjust the temperature and humidity deformation system matching degree of the upper and lower layers of the touch film layer 13 to reduce the risk of the touch film layer 13 being bent and broken by internal stress under temperature and humidity.
  • the adjustment layer 15 is provided to increase the vertical and horizontal impact resistance of the flexible display screen 10 when it is unfolded.
  • the adjustment layer 15 may include a first adjustment layer 15a and a second adjustment layer 15b, the first adjustment layer 15a is located between the second adjustment layer 15b and the first adhesive layer 12a, and the second adjustment layer 15a is located between the second adjustment layer 15b and the first adhesive layer 12a.
  • the adjustment layer 15b is located between the touch film layer 13 and the first adjustment layer 15a.
  • the touch film layer 13 is disposed on the second adjustment layer 15b
  • the second adjustment layer 15b is located on the first adjustment layer 15a
  • the first adjustment layer 15a is located on the first adhesive layer 12a.
  • the second adjustment layer 15b can have a stress isolation effect on the touch film layer 13, so that the stress received when the touch film layer 13 is bent (as shown in FIG. 14) is reduced.
  • the second adjustment layer 15b may be an adhesive layer, for example, a pressure sensitive adhesive (PSA) or an optical adhesive (OCA).
  • PSA pressure sensitive adhesive
  • OCA optical adhesive
  • the second adjustment layer 15b can also play the role of adhering the touch film layer 13 to the first adjustment layer 15a. Therefore, in the embodiment of the present application, when the second adjustment layer 15b is an adhesive layer, on the one hand, it achieves a stress isolation effect on the touch film layer 13, and on the other hand, it realizes that the touch film layer 13 is fixed on the first adjustment layer 15a. The role of.
  • the material of the first adjustment layer 15a may be an optical material.
  • the optical material may include, but is not limited to, cycloolefin polymer (COP) or polyethylene terephthalate (PET).
  • COP cycloolefin polymer
  • PET polyethylene terephthalate
  • the COP has better light transmission performance. Therefore, in the embodiment of the present application, the first adjustment layer 15a is a COP layer.
  • the first adjustment layer 15a is a COP
  • the touch film layer 13 and the first adjustment layer 15a are separated by the first The second adjustment layer 15b, so compared with the flexible display screen in FIG.
  • the second adjustment layer 15b separates the touch film layer 13 from the COP layer (ie, the first adjustment layer 15a), so that the COP The layer fracture is not easy to cause the touch electrode of the touch film layer 13 to be disconnected.
  • the first adjustment layer 15a and the second adjustment layer 15b are provided between the touch film layer 13 and the display panel 11, so that the distance between the touch film layer 13 and the display panel 11 is increased.
  • the interference of the noise of the cathode layer in the display panel 11 to the touch film layer 13 is prevented, thereby avoiding the problem of crosstalk between the touch film layer 13 and the display panel 11.
  • the effect of adjusting the stress is realized, so that the stress when the touch film layer 13 is bent is reduced, and on the other hand, the touch film layer 13 is adjusted.
  • the third aspect increases the impact resistance of the flexible display screen 10 in the vertical and horizontal directions when the flexible display screen 10 is unfolded, and the fourth aspect avoids the problem of crosstalk between the touch film layer 13 and the display panel 11.
  • the Young's modulus of the materials of the first adjustment layer 15a and the second adjustment layer 15b is as shown in Table 1:
  • the second adjustment layer 15b PSA 1# 800kPa
  • the second adjustment layer 15b PSA 2# 150kPa
  • the second adjustment layer 15b PSA 3# 22kPa
  • the second adjustment layer 15b PSA 4# 80kPa
  • the first adjustment layer 15a COP 2.0GPa
  • the Young's modulus of the first adjustment layer 15a is greater than the Young's modulus of the second adjustment layer 15b.
  • the layer 15a is a high Young's modulus layer
  • the second adjustment layer 15b is a low Young's modulus layer.
  • the stress state of the layer 13 matches the temperature and humidity coefficient of the upper and lower layers of the touch film layer 13, thereby improving the structural strength of the flexible display screen 10.
  • the thickness h1 of the first adjustment layer 15a may be 20-40 ⁇ m, for example, the thickness h1 of the first adjustment layer 15a may be 23 ⁇ m, or the thickness h1 of the first adjustment layer 15a
  • the thickness h1 may be 30 ⁇ m.
  • the thickness h2 of the second adjustment layer 15b may be 15-25 ⁇ m, for example, the thickness h2 of the second adjustment layer 15b may be 18 ⁇ m, or the thickness h2 of the second adjustment layer 15b may be 20 ⁇ m.
  • each film layer in the touch film layer 13 can refer to the description in scenario 1, which will not be repeated in the embodiment of the present application.
  • the peeling layer 135 in the film layer 13 is located on the second adjustment layer 15b.
  • the peeling layer 135 is fixed on the first adjustment layer 15a through the second adjustment layer 15b.
  • Both the peeling layer 135 and the first adjusting layer 15a are organic film layers.
  • the touch film layer 13 may be provided as shown in FIG. 16, for example, a peeling layer 135 (LLO) is provided on the substrate 130, and the material of the substrate 130 may be cycloolefin.
  • LLO peeling layer 135
  • a metal bridging layer 133 is formed on the peeling layer 135, a first insulating layer 136 is covered on the peeling layer 135 and the metal bridging layer 133, and a metal bridging layer 133 is formed on the first insulating layer 136 Electrically connected vias, patterned first touch electrodes 131 and second touch electrodes 132 are formed on the first insulating layer 136, and the first touch electrodes 131 are electrically connected to the metal bridging layer 133 through the vias 134, The second insulating layer 137 is covered on the first insulating layer 136, the first touch electrode 131, and the second touch electrode 132 to form a touch panel. A laser is used to irradiate the touch panel.
  • the polarizer 14 is fixed on the second insulating layer 137 of the touch film layer 13 through the second adhesive layer 12b.
  • the second adjustment layer 15b is PSA, so the first adjustment layer 15a is fixed on the peeling layer 135 (for example, fixed on the side of the peeling layer 135 facing the display panel 11) through the second adjustment layer 15b.
  • the display panel 11 is fixed on the first adjustment layer 15a through the first adhesive layer 12a (for example, fixed on the side of the first adjustment layer 15a facing the display panel 11) to form a flexible display screen 10.
  • the arrangement sequence of the touch film layer 13, the polarizer 14, the display panel 11 and the adjustment layer 15 includes but is not limited to the preparation sequence shown in FIG. 11.
  • the adjustment layer 15 may be fixed on the display panel 11 through the first adhesive layer 12a, and then the structure formed by the display panel 11 and the adjustment layer 15 may be fixed on the peeling layer 135 through the first adjustment layer 15a, and the polarizer 14 may pass through
  • the second adhesive layer 12b is fixed on the second insulating layer 137 of the touch film layer 13.
  • the flexible display screen 10 may further include: a first protective layer 16 and a second protective layer 17.
  • the first protective layer 16 is fixed on the third adhesive layer 12c.
  • the second protective layer 17 is fixed on the first protective layer 16 through the fourth adhesive layer 12d.
  • the material of the first protective layer 16 and the second protective layer 17 may be PI.
  • the material of the first protective layer 16 may be PI
  • the second protective layer 17 may be a flexible hard board (Hard Coat, HC)
  • the material of the third adhesive layer 12c and the fourth adhesive layer 12d may be optical adhesive (OCA). ), or pressure sensitive adhesive (PSA). .
  • the display panel 11 may be an OLED display panel 11.
  • the display panel 11 may include: a flexible substrate 111, a back film 113 and a display layer 115.
  • the flexible substrate 111 is provided with a fifth adhesive layer 112
  • the back film 113 is fixed on the flexible substrate 111 through the sixth adhesive layer 114
  • the back film 113 is provided with a sixth adhesive layer 114 on the side facing the display layer 115.
  • the layer 115 is fixed on the back film 113 by the sixth adhesive layer 114.
  • the display layer 115 is adhered to the release layer 135 through the first adhesive layer 12a.
  • the display layer 115 may include a thin film transistor layer (TFT) and a light emitting unit, where the light emitting unit may include a cathode, an anode, and a plurality of organic light emitting layers arranged between the cathode and the anode.
  • TFT thin film transistor layer
  • the maximum principal strain of each film layer in the flexible display screen 10 in scenario 1 and scenario 2 during bending (the maximum principal strain is positively correlated with the stress, for example: the maximum principal strain The greater the stress, the greater the stress)
  • the simulation test is performed, and the test results are shown in Figure 18 and Figure 19.
  • the second protective layer 17 in the flexible display screen 10 PI; the fourth adhesive layer 12d: OCA; the first protective layer Layer 16: PI; third adhesive layer 12c: OCA; polarizer 14: circular polarizer 14; second adhesive layer 12b: PSA; second adjustment layer 15b: PSA (Young's modulus is 800kPa); first Adjustment layer 15a: COP; first adhesive layer 12a: PSA; sixth adhesive layer 114: OCA; back film 113: PI; fifth adhesive layer 112: OCA.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or Indirect connection through an intermediate medium can be the internal communication between two elements or the interaction between two elements.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or Indirect connection through an intermediate medium can be the internal communication between two elements or the interaction between two elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

本申请实施例提供一种柔性显示屏及其制备方法和电子设备，电子设备可以包括手机、平板电脑、笔记本电脑、超级移动个人计算机(UMPC)、手持计算机、对讲机、上网本、POS机、个人数字助理(PDA)、可穿戴设备、虚拟现实设备、无线U盘、蓝牙音响/耳机、或车载前装等具有柔性显示屏的移动或固定终端，通过在触摸膜层与显示面板之间设置第一调节层和第二调节层，使得触控膜层在弯折过程中受到的应力降低，触控膜层不易出现断路风险，解决了柔性显示屏在弯折过程中由于易出现断裂而导致显示屏功能失效的问题。

Description

一种柔性显示屏及其制备方法和电子设备
本申请要求于2019年09月02日提交中国专利局、申请号为201910823881.X、申请名称为“一种柔性显示屏及其制备方法和电子设备”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
本申请涉终端技术领域，特别涉及一种柔性显示屏及其制备方法和电子设备。
背景技术
有机发光二极管(Organic Light Emitting Diode，OLED)显示面板具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽、可实现柔性显示与大面积全色显示等诸多优点，被业界广泛地应用到柔性显示屏中。
目前，柔性OLED显示屏在折叠式电子设备中应用时，图1所示，折叠式电子设备包括：中框和设置在中框上的柔性显示屏，中框包括第一中框7a和第二中框7b，第一中框7a和第二中框7b之间通过转动件6转动相连，柔性显示屏包括：显示面板、触控面板3、偏光片2和盖板1，显示面板包括背板5和设在背板5上的显示层4。折叠时，如图2所示，第一中框7a和第二中框7b折叠，柔性OLED显示屏弯折。如图3所示，柔性OLED显示屏弯折时，柔性OLED显示屏中的各个膜层均进行弯折。
然而，柔性OLED显示屏在重复弯折过程中，显示屏中的膜层易出现断裂而导致显示屏功能失效。
发明内容
本申请实施例提供一种柔性显示屏及其制备方法和电子设备，降低柔性显示屏弯折过程中触控层的断裂风险，增加了柔性显示屏在垂直和水平方向的抗冲击能力，解决了柔性显示屏在弯折过程中由于易出现断裂而导致显示屏功能失效的问题。
本申请实施例第一方面提供一种柔性显示屏，至少包括层叠设置的：
显示面板、第一粘结层、第一调节层、第二调节层和触控膜层，所述第一粘结层位于所述显示面板和所述第一调节层之间，所述第二调节层位于所述第一调节层和所述触控膜层之间。
通过第一调节层和第二调节层起到调节柔性显示屏弯折的中性层，使触控膜层弯折时受力减小，触控膜层在弯折过程中不易发生断裂。另一方面，通过第一调节层和第二调节层还可以调节触控膜层上下层温度湿度形变系统匹配度，降低温湿度下触控膜层弯折受内应力断裂风险。另外，柔性显示屏包括第一调节层和第二调节层时，增大了柔性显示屏抗冲击能力，这样柔性显示屏展开后，在外界冲击等条件下，柔性显示屏在垂直和水平方向上不易发生断裂，所以，通过设置第一调节层和第二调节层解决了柔性显示屏在弯折过程中由于易出现断裂而导致显示屏功能失效的问题，增加了柔性显示屏展开时的垂直和水平方向的抗冲击能力。
所述第一调节层为环烯烃聚合物COP层，所述第二调节层为胶层。这样第二调节层一方面实现了对触控膜层起到应力隔绝作用，另一方面实现触控膜层固定在第一调节层上的作用。
在一种可能的实现方式中，所述第一调节层的杨氏模量大于所述第二调节层的杨氏模量。
这样触控膜层和显示面板之间增加高低杨氏模量两层结构，达到调整触控膜层应力状态，匹配触控膜层上下两层温湿度系数，提高了柔性显示屏的结构强度。
在一种可能的实现方式中，所述第一调节层的杨氏模量为2.0GPa，所述第二调节层的杨氏模量为80-800kPa。
在一种可能的实现方式中，所述第一调节层的厚度为20-40μm。
在一种可能的实现方式中，所述第二调节层的厚度为15-25μm。
在一种可能的实现方式中，所述胶层为压敏胶PSA或光学胶OCA。
本申请实施例第二方面提供一种柔性显示屏，至少包括层叠设置的：
显示面板、第一粘结层和触控膜层，所述第一粘结层位于所述触控膜层和所述显示面板之间。
这样在柔性显示屏弯折时，第一粘结层起到应力隔绝作用，从而使得弯折过程中，触控膜层受到的应力降低，所以弯折过程中，触控膜层不易出现断路风险。所以，本申请实施例中，通过将触控膜层设在第一粘结层上，第一粘结层对触控膜层起到应力隔绝作用，这样触控膜层在弯折过程中不易发生断路，确保了触控膜层的正常使用。
在一种可能的实现方式中，所述触控膜层包括：剥离层、设在所述剥离层上的金属架桥层、设在所述剥离层和所述金属架桥层上的第一绝缘层、设在所述第一绝缘层上相互交叉且绝缘的第一触控电极和第二触控电极、以及设在所述第一绝缘层、所述第一触控电极和所述第二触控电极上的第二绝缘层。
所述第一触控电极和所述第二触控电极中的其中一个触控电极在交叉处断开并通过所述金属架桥层接通。
在一种可能的实现方式中，还包括：偏光片和第二粘结层，所述第二粘结层位于所述偏光片和所述触控膜层之间。
通过偏光片起到提高屏幕亮度的作用，通过第二粘结层将偏光片固定在触控膜层上。
在一种可能的实现方式中，还包括：保护层和第三粘结层，所述第三粘结层位于所述保护层和所述第二粘结层之间。
这样保护层对柔性显示屏起到保护作用。
本申请实施例第三方面提供一种电子设备，至少包括：上述任一所述的柔性显示屏、中框和后壳，所述中框位于所述柔性显示屏和所述后壳之间。
通过包括上述柔性显示屏，这样电子设备折叠时，柔性显示屏中的触控膜层在弯折过程中不易发生断裂。另外，柔性显示屏包括第一调节层和第二调节层时，增大了柔性显示屏抗冲击能力，这样柔性显示屏展开后，在外界冲击等条件下，电子设备的柔性显示屏在垂直和水平方向上不易发生断裂，所以，通过柔性显示屏中设置第一调节层和第二调节层解决了柔性显示屏在弯折过程中由于易出现断裂而导致显示屏功能失效的问题，增加了柔性显示屏展开时的垂直和水平方向的抗冲击能力。
在一种可能的实现方式中，所述电子设备为折叠式电子设备。这样电子设备可以折叠和展开使用，折叠后可以使用主副屏中的任意屏进行显示，展开后可以提供更大的显示区域。
在一种可能的实现方式中，所述中框至少包括第一中框和第二中框，所述第一中框和所述第二中框之间通过转动件转动相连。这样第一中框和第二中框可以转动相连，从而确保了电子设备可以实现折叠和展开。
在一种可能的实现方式中，所述柔性显示屏为两端朝向后壳卷曲的卷曲屏。这样电子设备为具有卷曲屏的电子设备，卷曲屏的设置确保了电子设备具有高屏占比。
本申请实施例第四方面提供一种柔性显示屏的制备方法，所述方法包括：
提供触控膜层、显示面板、第一调节层、第二调节层和粘结层，其中，所述第一调节层为环烯烃聚合物COP层，第二调节层为胶层；
将所述第二调节层设在所述触控膜层和所述第一调节层之间；
将所述粘结层设在所述第一调节层和所述显示面板的出光面之间，形成柔性显示屏。
通过在将所述第二调节层设在所述触控膜层和所述第一调节层之间，将所述粘结层设在所述第一调节层和所述显示面板的出光面之间，这样形成的柔性显示屏中，触控膜层和显示面板之间具有第一调节层和第二调节层，第一调节层和第二调节层起到调节柔性显示屏弯折的中性层，使触控膜层弯折时受力减小，触控膜层在弯折过程中不易发生断裂。另一方面，通过第一调节层和第二调节层还可以调节触控膜层上下层温度湿度形变系统匹配度，降低温湿度下触控膜层弯折受内应力断裂风险。另外，柔性显示屏包括第一调节层和第二调节层时，增大了柔性显示屏抗冲击能力，这样柔性显示屏展开后，在外界冲击等条件下，柔性显示屏在垂直和水平方向上不易发生断裂，所以，通过设置第一调节层和第二调节层解决了柔性显示屏在弯折过程中由于易出现断裂而导致显示屏功能失效的问题，增加了柔性显示屏展开时的垂直和水平方向的抗冲击能力。
在一种可能的实现方式中，所述提供触控膜层，包括：
在衬底上形成剥离层；
在所述剥离层上形成金属架桥层；
在所述剥离层和所述金属架桥层上设置第一绝缘层，并在所述第一绝缘层上形成一端与所述金属架桥层电连接的过孔；
在所述第一绝缘层上形成相互交叉且绝缘的第一触控电极和第二触控电极，所述第一触控电极和所述第二触控电极中的其中一个触控电极在交叉处断开并通过所述过孔与金属架桥层接通；
在所述第一触控电极、所述第二触控电极和所述第一绝缘层上设置第二绝缘层；
将所述衬底与所述剥离层分离，形成所述触控膜层。
这样形成的触控膜层中，触控膜层的剥离层与第二调节层接触，这样触控膜层中的金属层(例如金属架桥层)与第一调节层之间间隔剥离层与第二调节层，所以第一调节层在弯折过程中受到的应力不易造成触控膜层中金属层的断路。
在一种可能的实现方式中，所述将所述第二调节层设在所述触控膜层和所述第一调节层之间，包括：
在所述第一调节层上形成所述第二调节层。
将所述触控膜层设在所述第二调节层背向所述第一调节层的一面上。
在一种可能的实现方式中，所述将所述粘结层设在所述第一调节层和所述显示面板的出光面之间，包括：
在所述显示面板的出光面上形成所述粘结层；
将所述第一调节层与所述粘结层粘合，形成所述柔性显示屏。
或者，
在所述第一调节层朝向所述显示面板的一面上形成所述粘结层；
将所述显示面板的出光面与所述粘结层粘合，形成所述柔性显示屏。
本申请实施例第五方面提供一种柔性显示屏的制备方法，所述方法包括：所述方法包括：
提供触控膜层、显示面板和粘结层；
将所述粘结层设在所述触控膜层和所述显示面板的出光面之间，形成柔性显示屏。
通过将所述粘结层设在所述触控膜层和所述显示面板的出光面之间，这样形成的柔性显示屏中，触控膜层和显示面板之间具有粘结层，粘结层起到应力隔绝作用，从而使得弯折过程中，触控膜层受到的应力降低，所以弯折过程中，触控膜层不易出现断路风险。所以，本申请实施例中，粘结层对触控膜层起到应力隔绝作用，这样触控膜层在弯折过程中不易发生断路，确保了触控膜层的正常使用。
在一种可能的实现方式中，所述提供触控膜层，包括：
在衬底上形成剥离层；
在所述剥离层上形成金属架桥层；
在所述剥离层和所述金属架桥层上设置第一绝缘层，并在所述第一绝缘层上形成一端与所述金属架桥层电连接的过孔；
在所述第一绝缘层上形成相互交叉且绝缘的第一触控电极和第二触控电极，所述第一触控电极和所述第二触控电极中的其中一个触控电极在交叉处断开并通过所述过孔与金属架桥层接通；
在所述第一触控电极、所述第二触控电极和所述第一绝缘层上设置第二绝缘层；
将所述衬底与所述剥离层分离，形成所述触控膜层。
这样形成的触控膜层中，触控膜层的剥离层与粘结层接触，这样触控膜层中的金属层(例如金属架桥层)与显示面板之间间隔剥离层与粘结层，所以剥离层与粘结层可以对触控膜层中的金属层起到应力隔绝的作用，使得柔性显示在弯折过程不易造成触控膜层中金属层的断路。
在一种可能的实现方式中，所述将所述粘结层设在所述触控膜层和所述显示面板的出光面之间，包括：
在所述显示面板的出光面上形成所述粘结层；
将所述触控膜层的所述剥离层与所述粘结层粘合，形成所述柔性显示屏。
或者，
所述剥离层背向所述第一绝缘层的一面上形成所述粘结层；
所述显示面板的出光面与所述粘结层粘合，形成所述柔性显示屏。
附图说明
图1为现有折叠手机展开后中框与显示屏的剖面示意图；
图2为现有折叠手机折叠后中框与显示屏的剖面示意图；
图3为现有折叠手机折叠后显示屏的剖面示意图；
图4为本申请一实施例提供的电子设备展开后的结构示意图；
图5为本申请一实施例提供的电子设备的爆炸示意图；
图6为本申请一实施例提供的电子设备弯折的结构示意图；
图7为本申请一实施例提供的电子设备折叠后的结构示意图；
图8为现有柔性显示屏的剖面结构示意图；
图9为本申请一实施例提供的电子设备中柔性显示屏的剖面结构示意图；
图10为本申请一实施例提供的电子设备中柔性显示屏的又一剖面结构示意图；
图11为本申请一实施例提供的电子设备中柔性显示屏的再一剖面结构示意图；
图12为本申请一实施例提供的电子设备中柔性显示屏的制备示意图；
图13为本申请一实施例提供的电子设备中柔性显示屏的剖面结构示意图；
图14为本申请一实施例提供的电子设备折叠后中框与柔性显示屏的剖面结构示意图；
图15为本申请一实施例提供的电子设备中柔性显示屏的剖面结构示意图；
图16为本申请一实施例提供的电子设备中柔性显示屏的制备示意图；
图17为本申请一实施例提供的电子设备中柔性显示屏的剖面结构示意图；
图18为本申请一实施例提供的电子设备的柔性显示屏在两种场景下各个膜层的最大主应变的示意图；
图19为本申请一实施例提供的电子设备的柔性显示屏在两种场景下的触控层的最大主应变的示意图。
附图标记说明：
100-手机；10-柔性显示屏；11-显示面板；111-柔性基板；112-第五粘结层；113-背膜；114-第六粘结层；115-显示层；12a-第一粘结层；12b-第二粘结层；12c-第三粘结层；12d-第四粘结层；13-触控膜层；130-衬底；131-第一触控电极；132-第二触控电极；133-金属架桥层；134-过孔；135-剥离层；136-第一绝缘层；137-第二绝缘层；14-偏光片；15-调节层；15a-第一调节层；15b-第二调节层；16-第一保护层；17-第二保护层；20-中框；21-第一中框；22-第二中框；221-端盖；222-闪光灯；223-摄像头；23-转动件；30-后壳；40-电路板；41-第一电路板；42-第二电路板；50-电池；51-第一电池；52-第二电池。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请，下面将结合附图对本申请实施例的实施方式进行详细描述。
本申请实施例提供的一种电子设备，可以包括但不限于为手机、平板电脑、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、手持计算机、对讲机、上网本、POS机、个人数字助理(personal digital assistant，PDA)、可穿戴设备、虚拟现实设备或车载前装等具有柔性显示屏的移动或固定终端。
其中，本申请实施例中，以手机100为上述电子设备为例进行说明，本申请实施例提供的手机100可以为折叠式手机，或者也可以为具有卷曲屏的手机，或者还可以为其他显示屏可弯折的手机。本申请实施例中，以折叠式手机100为例。图4示出了折叠式手机100展开的结构，参见图4所示，手机100折叠时，可以按照图4中的虚线进行折叠。参见图4和图5所示，手机100可以包括：柔性显示屏10、中框20、电路板40、电池50和后壳30。手机100展开时，柔性显示屏10和后壳30分别位于中框20的两侧，电路板40和电池50可以位于中框20和后壳30之间，或者电路板40和电池50还可以位于中框20与柔性显示屏10之间。
参见图5所示，中框20可以包括：第一中框21和第二中框22，第一中框21和第二中框22之间可以通过转动件23(例如转动件23可以为转轴、铰链或柔性板)转动相连。这样使得手机100中的第一中框21和第二中框22可以绕着转动件23进行折叠和展开。
其中，第一中框21和第二中框22可以为金属中框。或者，第一中框21和第二中框22还可以为陶瓷和金属两种材料组成的中框，例如，第一中框21和第二中框22中的边框为陶瓷边框，第一中框21和第二中框22中的中板为金属中板，陶瓷边框和金属中板组成第一中框21和第二中框22。当然，第一中框21和第二中框22材料包括但不限为金属和陶瓷，还可以为其他材料。
其中，本申请实施例中，第一中框21和第二中框22可以按照如图4中的虚线进行左右折叠。在其他示例中，第一中框21和第二中框22还可以上下折叠、对角线折叠或其他任意角度进行折叠。可以理解的，图5中示出的手机100包括第一中框21和第二中框22这两个中框20，以实现手机100中两个显示屏的折叠。在其他示例中，手机100还可以包括三个中框，这样可以实现手机100三个显示屏可折叠。手机100中可折叠的显示屏数量具体根据实际需求进行设置。
本申请实施例中，第一中框21和第二中框22中的其中一个可以为手机100主屏对应的中框，另一个可以为手机100副屏对应的中框，例如，第一中框21可以为主屏对应的主中框，第二中框22可以为副屏对应的副中框。第一中框21和第二中框22折叠时，手机100的主屏和副屏可以相对，或者手机100的主屏和副屏可以相互背离。本申请实施例中，第一中框21和第二中框22沿着图4中的虚线折叠后，手机100的主屏和副屏相互背离，即手机100折叠后手机100的正反面均为显示屏，此时用户可以使用主屏进行显示，也可以使用副屏进行显示。
其中，本申请实施例中，手机100包括第一中框21和第二中框22时，后壳30可以为图5所示的后壳30，后壳30覆盖在第一中框21和第二中框22的一侧上。为了实现手机100折叠，后壳30可以为柔性材料制成的柔性后壳，例如，后壳30为可弯折的柔性玻璃后壳，或者后壳30为可弯折的塑料后壳。
在其他示例中，后壳30可以包括第一后壳和第二后壳(未示出)，例如第一后壳位于第一中框21的一侧，第二后壳位于第二中框22的一侧，即两个中框各自对应设置一个后壳。第一后壳和第二后壳之间采用可弯折的柔性基板，这样折叠时，第一后壳和第二后壳绕着柔性基板折叠。后壳30包括第一后壳和第二后壳时，第一后壳和第二后壳可以为金属后壳，或者，第一后壳和第二后壳还可以为玻璃后壳，或者第一后壳和第二后壳还可以为陶瓷后壳。需要说明的是，第一后壳和第二后壳的材料包括但不限于金属、玻璃或陶瓷。
其中，本申请实施例中，如图5所示，电路板40可以包括：第一电路板41和第二电路板42。第一电路板41和第二电路板42之间可以通过柔性电路板(FPC)进行电连接。第一电路板41可以位于第一中框21，第二电路板42可以位于第二中框22。第一电路板41和第二电路板42中的其中一个可以为主电路板(即主板)，另一个可以为辅电路板。
本申请实施例中，如图5所示，电池50可以包括：第一电池51和第二电池52。第一电池51可以位于图5中第一中框21上的虚线位置，第二电池52可以位于图5中第二中框22上的虚线位置。
当然，第一电池51和第二电池52设置的位置包括但不限于为图5中第一中框21和第二中框22的虚线位置。其中，第一电池51和第二电池52可以通过电源管理模块与充电管理模块和电路板40相连，电源管理模块接收电池50和/或充电管理模块的输入，并为处理器、内部存储器、外部存储器、柔性显示屏10、摄像头以及通信模块等供电。电源管理模块还可以用于监测电池50容量，电池50循环次数，电池50健康状态(漏电，阻抗)等参数。在其他一些实施例中，电源管理模块可以设置于电路板40的处理器中。在另一些实施例中，电源管理模块和充电管理模块也可以设置于同一个器件中。
本申请实施例中，柔性显示屏10可以为OLED显示屏。手机100折叠时，柔性显示屏10可以沿着图6中的箭头方向进行弯折。折叠后，如图7所示，柔性显示屏10在第一中框21和第二中框22的一端处进行弯折。其中，本申请实施例中，第二中框22远离第一中框21的一端具有端盖221，第一中框21和第二中框22折叠后，第一中框21上的显示区域的宽度小于第二中框22上的显示区域的宽度，即手机100折叠后，两个显示屏的尺寸不相同。
其中，本申请实施例中，该端盖221上可以设置闪光灯222以及摄像头223。其中端盖221可以通过卡接、焊接或者一体成型方式固定在第二中框22上。通过设置端盖221，一方面可以实现摄像头223和闪光灯222的设置，另一方面用户握手机100上不易接触到显示屏，方便用户握住手机100。
通常来说，柔性显示屏10的结构如图8所示，可以包括：背板5、设在背板5上的显示面板4、触控面板3、偏光片2和盖板1，其中，显示面板4与触控面板3之间通过粘结层8b相连，触控面板3与偏光片2之间通过粘结层8a相连。如本领域技术人员所知，偏光片2的作用主要是提高屏幕的亮度，并非显示上所必需，因此是可以省略的。
如图8所示，传统的触控面板3可以包括：支撑层3b和设在支撑层3b上的触控层3a。触控面板3的支撑层3b通过粘结层8b与显示面板4相连，触控面板3的触控层3a通过粘结层8a与偏光片2相连。柔性显示屏弯折时，各个膜层在弯折部分受到应力作用发生应变，而支撑层3b的材料往往选用环烯烃聚合物(Cyclo-olefin Polymer，COP)，而COP材料脆性较大，所以在弯折过程中受到的应力易超过材料极限，导致支撑层3b易发生断裂，但是支撑层3b的断裂易将触控层3a的电极层断路(由于触控层3a中的部分电极层图案化设在支撑层3b上)，从而造成触控层3a的部分区域失效。
基于上述描述，本申请实施例提供一种柔性显示屏10，降低了柔性显示屏10中触控层在弯折过程中失效风险。
下面，针对下述场景对折叠手机100中柔性显示屏10的结构进行描述。
场景一
参见图9所示，柔性显示屏10可以包括依次层叠设置的：显示面板11、第一粘结层12a、触控膜层13、第二粘结层12b和偏光片14。其中，显示面板11与触控膜层13之间设置第一粘结层12a，触控膜层13与偏光片14之间设置第二粘结层12b。例如，显示面板11的出光面上设置第一粘结层12a，触控膜层13通过第一粘结层12a固定在显示面板11的出光面上，触控膜层13朝向偏光片14的一面上设置第二粘结层12b，偏光片14通过第二粘结层12b固定在触控膜层13上。需要说明的是，显示面板11的出光面为显示面板11中发光单元的光线射出的一面，例如图9中，显示面板11的出光方向向上，即显示面板11为顶发光，所以，显示面板11的出光面为显示面板11的顶面。
本申请实施例中，通过在显示面板11和触控膜层13之间设置第一粘结层12a，这样在柔性显示屏10弯折时，第一粘结层12a起到应力隔绝作用，从而使得弯折过程中，触控膜层13受到的应力降低，所以弯折过程中，触控膜层13不易出现断路风险。与图8中的柔性显示屏10相比，本申请实施例提供的柔性显示屏10中，减少了触控面板中的支撑层3b，这样一方面使得柔性显示屏10的整体厚度减薄，另一方面消除了支撑层3b易断裂而导致触控膜层13断路风险。所以，本申请实施例中，通过将触控膜层13设在第一粘结层12a上，第一粘结层12a对触控膜层13起到应力隔绝作用，这样触控膜层13在弯折过程中不易发生断路，确保了触控膜层13的正常使用。
本申请实施例中，第一粘结层12a和第二粘结层12b的材料可以为压敏胶(Pressure Sensitive Adhesive，PSA)。设置时，可以预先将压敏胶压成薄膜，然后贴附在显示面板11的出光面上。或者本申请实施例中，第一粘结层12a和第二粘结层12b的材料可以为光学胶(Optically Clear Adhesive，OCA)，其中，光学胶可以采用涂覆方式设在显示面板11的出光面上。
需要说明的是，由于压敏胶和光学胶采用不同方式设在显示面板11上，所以压敏胶和光学胶形成的粘结层的厚度不同，例如当第一粘结层12a和第二粘结层12b的材料采用光学胶时，形成的粘结层的厚度较大，当第一粘结层12a和第二粘结层12b的材料采用压敏胶时，形成的粘结层的厚度较小。本申请实施例中，第一粘结层12a和第二粘结层12b采用压敏胶，这样确保第一粘结层12a和第二粘结层12b的厚度较小，柔性显示屏10的厚度减薄。
本申请实施例中，第一粘结层12a和第二粘结层12b的材料采用光学胶时，形成的第一粘结层12a和第二粘结层12b的厚度可以为50-100μm。第一粘结层12a和第二粘结层12b的材料采用压敏胶时，形成的第一粘结层12a和第二粘结层12b的厚度可以为15-25μm，例如，第一粘结层12a和第二粘结层12b的厚度可以为18μm，或者第一粘结层12a和第二粘结层12b的厚度可以为23μm。
示例性的，如图10所示，触控膜层13可以包括：剥离层135(Laser Lift-Off，LLO)、设在剥离层135上的金属架桥层133、覆盖在剥离层135和金属架桥层133上的第一绝缘层136、设在第一绝缘层136上呈图形化的第一触控电极131和第二触控电极132以及覆盖在第一触控电极131、第二触控电极132和第一绝缘层136上的第二绝缘层137。
其中，第一触控电极131和第二触控电极132交错设置，第一触控电极131和第二触控电极132在交汇处绝缘设置，例如，第一触控电极131和第二触控电极132中其中一个电极在交汇处断开，如图10所示，第一触控电极131在交汇断开，第一触控电极131断 开的两端分别通过第一绝缘层136中设置的过孔134与金属架桥层133电连接，这样断开的第一触控电极131通过金属架桥层133和过孔134实现相连，实现第一触控电极131和第二触控电极132在交汇处绝缘设置。
需要说明的是，本申请实施例中，第一触控电极131和第二触控电极132也可以设在剥离层135上，金属架桥层133设在第一绝缘层136上，这样金属架桥层133位于第一触控电极131和第二触控电极132之上。本申请实施例中，金属架桥层133设置的位置包括但限于为如图10所示的位置，金属架桥层133将交汇处断开的触控电极电连接即可。
其中，本申请实施例中，第一触控电极131和第二触控电极132中的其中一个电极可以为驱动电极(Tx)，另一个可以为接收电极(Rx)，例如，第一触控电极131可以为Tx，第二触控电极132可以为Rx。
其中，本申请实施例中，第一触控电极131、第二触控电极132和金属架桥层133可以为金属材料，例如，第一触控电极131和第二触控电极132可以为氧化铟锡(ITO)，也可以为氧化铟锌(IZO)，金属架桥层133的材料可以为铜金属或银。其中，过孔的金属材料可以银浆。第一绝缘层136和第二绝缘层137可以为有机绝缘层。剥离层135的材料可以为聚酰亚胺(Polyimide，PI)。需要说明的是，第一触控电极131、第二触控电极132、金属架桥层133、第一绝缘层136和第二绝缘层137和剥离层135的材料包括但不限于为上述材料。
其中，剥离层135的材料可以为聚酰亚胺(Polyimide，PI)，这样第一粘结层12a与剥离层135均为有机膜层，属性相同，所以显示面板11通过第一粘结层12a与触控膜层13的剥离层135粘结时，第一粘结层12a与剥离层135之间的粘附力更大，显示面板11与触控膜层13之间的粘附力更大，弯折过程中显示面板11与触控膜层13之间不易发生剥离。
其中，触控膜层13中的第二绝缘层137为有机绝缘层时，这样偏光片14通过第二粘结层12b与触控膜层13的第二绝缘膜层粘附，第二绝缘层137与第二粘结层12b均为有机膜层，属性相同，所以第二粘结层12b与第二绝缘膜层之间的粘附力更大，使得偏光片14与触控膜层13之间的粘附力更大，弯折过程中，偏光片14与触控膜层13之间不易发生剥离。
本申请实施例中，触控膜层13的厚度可以为6-15μm，例如，触控膜层13的厚度可以为7μm，或者触控膜层13的厚度可以为10μm。剥离层135的厚度可以2-5μm，例如，剥离层135的厚度可以为3μm。金属架桥层133的厚度可以为0.1-0.4μm，例如，金属架桥层133的厚度可以为0.2μm。第一绝缘层136的厚度可以为1.0-2μm，例如第一绝缘层136的厚度可以为1.8μm。第一触控电极131和第二触控电极132的厚度可以为0.07-0.1μm，例如，第一触控电极131和第二触控电极132的厚度可以0.08μm。第二绝缘层137的厚度可以为1.0-2μm，例如第二绝缘层137的厚度可以为1.8μm。
本申请实施例中，柔性显示屏10制备时，如图11所示，提供触控膜层13，例如，在衬底130上设置剥离层135(LLO)，衬底130的材料可以为环烯烃聚合物(COP)。在剥离层135上形成金属架桥层133，在剥离层135和金属架桥层133上覆盖第一绝缘层136，在第一绝缘层136上形成与金属架桥层133电连接的过孔，在第一绝缘层136上形成图案化的第一触控电极131和第二触控电极132，第一触控电极131通过过孔134与金属架桥层133电连接，在第一绝缘层136、第一触控电极131和第二触控电极132上覆盖第二绝 缘层137，形成触控面板。采用激光照射触控面板，在激光作用下，剥离层135与衬底130之间的氢键作用力被破坏，这样衬底130与剥离层135沿着图11中虚线剥离，得到触控膜层13。偏光片14通过第二粘结层12b固定在触控膜层13的第二绝缘层137上。显示面板11通过第一粘结层12a固定在触控膜层13的剥离层135上(例如固定在剥离层135背向金属架桥层133的一面上)，形成柔性显示屏10。
需要说明的是，触控膜层13与偏光片14和显示面板11之间的固定顺序包括但不限于为图11所示的先固定偏光片14再固定显示面板11的顺序，例如还可以先将显示面板11与剥离层135通过第一粘结层12a进行固定，再将偏光片14通过第二粘结层12b固定在第二绝缘层137上。
在一种可能的实现方式中，如图12所示，柔性显示屏10还可以包括：保护层，保护层可以包括第一保护层16和第二保护层17。例如如图12所示，第一保护层16通过第三粘结层12c固定在偏光片14上，第二保护层17通过第四粘结层12d固定在第一保护层16上。其中，第一保护层16和第二保护层17的材料可以为PI。或者第一保护层16的材料可以为PI，第二保护层17可以为柔性的硬板(Hard Coat，HC)，第三粘结层12c和第四粘结层12d的材料可以为光学胶(OCA)，或者也可以为压敏胶(PSA)。.
本申请实施例中，显示面板11可以为OLED显示面板。示例性的，如图12所示，显示面板11可以包括：柔性基板111、背膜113和显示层115。其中，柔性基板111上设置第五粘结层112，背膜113通过第五粘结层112固定在柔性基板111上，背膜113朝向显示层115的一面上设置第六粘结层114，显示层115通过第六粘结层114固定在背膜113上。显示层115通过第一粘结层12a与剥离层135粘合。其中，显示层115可以包括薄膜晶体管层(Thin Film Transistor，TFT)和发光单元(未示出)，其中，发光单元可以包括阴极、阳极以及设在阴极和阳极之间的多个有机发光层(未示出)。其中，柔性基板111起到支撑作用，背膜113起到对显示层115保护的作用。
其中，背膜113的材料可以包括但不限于为PI，第五粘结层112和第六粘结层114的材料可以为光学胶(OCA)，或者也可以为压敏胶(PSA)。
场景二
本申请实施例中，参见如图13所示，柔性显示屏10还可以包括：调节层15，调节层15位于触控膜层13和第一粘结层12a之间，例如，触控膜层13设在调节层15的一面上，调节层15的另一面通过第一粘结层12a固定在显示面板11上。本申请实施例中，通过包括调节层15，该调节层15可以起到调节柔性显示屏10弯折的中性层，使触控膜层13弯折时受力减小，触控膜层13在弯折过程中不易发生断裂。另一方面，通过调节层15还可以调节触控膜层13上下层温度湿度形变系统匹配度，降低温湿度下触控膜层13弯折受内应力断裂风险。另外，柔性显示屏10包括调节层15时，增大了柔性显示屏10抗冲击能力，这样柔性显示屏10展开后，在外界冲击等条件下，柔性显示屏10在垂直和水平方向上不易发生断裂，所以，通过设置调节层15增加了柔性显示屏10展开时的垂直和水平方向的抗冲击能力。
示例性的，如图13所示，调节层15可以包括第一调节层15a和第二调节层15b，第一调节层15a位于第二调节层15b和第一粘结层12a之间，第二调节层15b位于触控膜层 13和第一调节层15a之间。例如，触控膜层13设在第二调节层15b上，第二调节层15b位于第一调节层15a上，第一调节层15a位于第一粘结层12a上。本申请实施例中，第二调节层15b可以对触控膜层13起应力隔绝作用，使得触控膜层13弯折时(如图14所示)受到的应力减小。
本申请实施例中，第二调节层15b可以为胶层，例如可以为压敏胶(PSA)或光学胶(OCA)。这样第二调节层15b还可以起到将触控膜层13粘在第一调节层15a的作用。所以本申请实施例中，第二调节层15b为胶层时，一方面实现了对触控膜层13起到应力隔绝作用，另一方面实现触控膜层13固定在第一调节层15a上的作用。
第一调节层15a的材料可以为光学材料，例如，光学材料可以包括但不限于为环烯烃聚合物(COP)或聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，PET)。其中，COP透光性能较好，所以本申请实施例中，第一调节层15a为COP层，当第一调节层15a为COP时，触控膜层13与第一调节层15a之间间隔第二调节层15b，所以与图8中的柔性显示屏相比，本申请实施例中，第二调节层15b将触控膜层13与COP层(即第一调节层15a)隔开，这样COP层断裂不易使得触控膜层13的触控电极发生断路。
另外，本申请实施例中，触控膜层13与显示面板11之间设置第一调节层15a和第二调节层15b，这样触控膜层13与显示面板11之间的距离增大，这样防止了显示面板11中阴极层的噪声对触控膜层13的干扰，从而避免了触控膜层13与显示面板11之间的串扰问题。
综上，通过设置第一调节层15a和第二调节层15b，一方面实现了调节应力的作用，使得触控膜层13弯折时的应力减小，另一方面调节了触控膜层13的温度湿度形变系数匹配度，第三方面增加了柔性显示屏10展开时的垂直和水平方向上的抗冲击能力，第四方面避免了触控膜层13与显示面板11之间的串扰问题。
在一些实施例中，第一调节层15a为COP层，第二调节层15b为PSA层时，第一调节层15a和第二调节层15b的材料杨氏模量如表1所示：
表1
材料型号 杨氏模量
第二调节层15b：PSA 1# 800kPa
第二调节层15b：PSA 2# 150kPa
第二调节层15b：PSA 3# 22kPa
第二调节层15b：PSA 4# 80kPa
第一调节层15a：COP 2.0GPa
表1可以看出，第一调节层15a为COP层，第二调节层15b为PSA层时，第一调节层15a的杨氏模量大于第二调节层15b的杨氏模量，第一调节层15a为高杨氏模量层，第二调节层15b为低杨氏模量层，这样触控膜层13和显示面板11之间增加高低杨氏模量两层结构，达到调整触控膜层13应力状态，匹配触控膜层13上下两层温湿度系数，提高了柔性显示屏10的结构强度。
在一种可能的实现方式中，如图13所示，第一调节层15a的厚度h1可以为20-40μm， 例如第一调节层15a的厚度h1可以为23μm，或者，第一调节层15a的厚度h1可以为30μm。第二调节层15b的厚度h2可以为15-25μm，例如，第二调节层15b的厚度h2可以为18μm，或者第二调节层15b的厚度h2可以为20μm。
在一种可能的实现方式中，触控膜层13中的各个膜层可以参考场景一中的描述，本申请实施例中不再赘述，本申请实施例中，参见图15所示，触控膜层13中的剥离层135位于第二调节层15b。第二调节层15b为胶层时，剥离层135通过第二调节层15b固定在第一调节层15a上。剥离层135与第一调节层15a均为有机膜层，这样粘附时，剥离层135与第一调节层15a之间的粘附力增大，使得触控膜层13与第一调节层15a之间的结合力增大，触控膜层13与第一调节层15a之间不易裂开。
本申请实施例提供的柔性显示屏10制备时，可以如图16所示，提供触控膜层13，例如在衬底130上设置剥离层135(LLO)，衬底130的材料可以为环烯烃聚合物(COP)；在剥离层135上形成金属架桥层133，在剥离层135和金属架桥层133上覆盖第一绝缘层136，在第一绝缘层136上形成与金属架桥层133电连接的过孔，在第一绝缘层136上形成图案化的第一触控电极131和第二触控电极132，第一触控电极131通过过孔134与金属架桥层133电连接，在第一绝缘层136、第一触控电极131和第二触控电极132上覆盖第二绝缘层137，形成触控面板。采用激光照射触控面板，在激光作用下，剥离层135与衬底130之间的氢键作用力被破坏，这样衬底130与剥离层135沿着图16中的虚线剥离，得到触控膜层13。偏光片14通过第二粘结层12b固定在触控膜层13的第二绝缘层137上。第二调节层15b为PSA，所以第一调节层15a通过第二调节层15b固定在剥离层135上(例如固定在剥离层135朝向显示面板11的一面)。显示面板11通过第一粘结层12a固定在第一调节层15a上(例如固定在第一调节层15a朝向显示面板11的一面)，形成柔性显示屏10。
需要说明的是，触控膜层13、偏光片14、显示面板11和调节层15的设置顺序包括但不限于为图11所示的制备顺序。例如还可以将调节层15通过第一粘结层12a固定在显示面板11上，然后将显示面板11和调节层15形成的结构通过第一调节层15a固定在剥离层135上，偏光片14通过第二粘结层12b固定在触控膜层13的第二绝缘层137上。
在一种可能的实现方式中，柔性显示屏10还可以包括：第一保护层16和第二保护层17，例如如图17所示，第一保护层16通过第三粘结层12c固定在偏光片14上，第二保护层17通过第四粘结层12d固定在第一保护层16上。其中，第一保护层16和第二保护层17的材料可以为PI。或者第一保护层16的材料可以为PI，第二保护层17可以为柔性硬板(Hard Coat，HC)，第三粘结层12c和第四粘结层12d的材料可以为光学胶(OCA)，或者也可以为压敏胶(PSA)。.
本申请实施例中，显示面板11可以为OLED显示面板11。示例性的，如图17所示，显示面板11可以包括：柔性基板111、背膜113和显示层115。其中，柔性基板111上设置第五粘结层112，背膜113通过第六粘结层114固定在柔性基板111上，背膜113朝向显示层115的一面上设置第六粘结层114，显示层115通过第六粘结层114固定在背膜113上。显示层115通过第一粘结层12a与剥离层135粘合。其中，显示层115可以包括薄膜晶体管层(Thin Film Transistor，TFT)和发光单元，其中，发光单元可以包括阴极、阳极以及设在阴极和阳极之间的多个有机发光层。
基于上述描述，本申请实施例中，将场景一和场景二中的柔性显示屏10中各个膜层在弯折时的最大主应变(最大主应变与应力之间正相关，例如：最大主应变越大，受到的应力越大)进行仿真测试，测试结果如图18和图19所示，柔性显示屏10中的第二保护层17：PI；第四粘结层12d：OCA；第一保护层16：PI；第三粘结层12c：OCA；偏光片14：圆偏光片14；第二粘结层12b：PSA；第二调节层15b：PSA(杨氏模量为800kPa)；第一调节层15a：COP；第一粘结层12a：PSA；第六粘结层114：OCA；背膜113：PI；第五粘结层112：OCA。
图18可以看出，弯折时，各个粘结层受到的应力较大。场景二中的各个粘结层的应力小于场景一中各个粘结层的应力，所以，场景二中，通过设置调节层15，调节层15起到调节弯折中性层的作用，使得各个粘结层受到的应力减小。
图19中可以看出，弯折时，场景二中的触控膜层13受到的应力小于场景一中的触控膜层13受到的应力，所以，通过设置调节层15，调节层15起到调节应力的作用，使得触控层在弯折过程中受到的应力减小。图19中得到，与场景一中的触控膜层13相比，场景二中的触控膜层13弯折时的最大主应变下降约30％。所以，本申请实施例提供的柔性显示屏10弯折时，通过调节层15使得触控膜层13受到的应力减少，降低了触控膜层13弯折过程中发生断裂的风险。
在本申请实施例的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应作广义理解，例如，可以是固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
本申请实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
最后应说明的是：以上各实施例仅用以说明本申请实施例的技术方案，而非对其限制；尽管参照前述各实施例对本申请实施例进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请实施例各实施例技术方案的范围。

Claims (22)

  1. 一种柔性显示屏，其特征在于，至少包括层叠设置的：
    显示面板、第一粘结层、第一调节层、第二调节层和触控膜层，所述第一粘结层位于所述显示面板和所述第一调节层之间，所述第二调节层位于所述第一调节层和所述触控膜层之间；
    所述第一调节层为环烯烃聚合物COP层，所述第二调节层为胶层。
  2. 根据权利要求1所述的柔性显示屏，其特征在于，所述第一调节层的杨氏模量大于所述第二调节层的杨氏模量。
  3. 根据权利要求2所述的柔性显示屏，其特征在于，所述第一调节层的杨氏模量为2.0GPa，所述第二调节层的杨氏模量为80-800kPa。
  4. 根据权利要求1-3任一所述的柔性显示屏，其特征在于，所述第一调节层的厚度为20-40μm。
  5. 根据权利要求1-4任一所述的柔性显示屏，其特征在于，所述第二调节层的厚度为15-25μm。
  6. 根据权利要求1-5任一所述的柔性显示屏，其特征在于，所述胶层为压敏胶PSA或光学胶OCA。
  7. 一种柔性显示屏，其特征在于，至少包括层叠设置的：
    显示面板、第一粘结层和触控膜层，所述第一粘结层位于所述触控膜层和所述显示面板之间。
  8. 根据权利要求1-7任一所述的柔性显示屏，其特征在于，所述触控膜层包括：剥离层、设在所述剥离层上的金属架桥层、设在所述剥离层和所述金属架桥层上的第一绝缘层、设在所述第一绝缘层上相互交叉且绝缘的第一触控电极和第二触控电极、以及设在所述第一绝缘层、所述第一触控电极和所述第二触控电极上的第二绝缘层；
    所述第一触控电极和所述第二触控电极中的其中一个触控电极在交叉处断开并通过所述金属架桥层接通。
  9. 根据权利要求1-8任一所述的柔性显示屏，其特征在于，还包括：偏光片和第二粘结层，所述第二粘结层位于所述偏光片和所述触控膜层之间。
  10. 根据权利要求9所述的柔性显示屏，其特征在于，还包括：保护层和第三粘结层，所述第三粘结层位于所述保护层和所述第二粘结层之间。
  11. 一种电子设备，其特征在于，至少包括：上述权利要求1-10任一所述的柔性显示屏、中框和后壳，所述中框位于所述柔性显示屏和所述后壳之间。
  12. 根据权利要求11所述的电子设备，其特征在于，所述电子设备为折叠式电子设备。
  13. 根据权利要求12所述的电子设备，其特征在于，所述中框至少包括第一中框和第二中框，所述第一中框和所述第二中框之间通过转动件转动相连。
  14. 根据权利要求11所述的电子设备，其特征在于，所述柔性显示屏为两端朝向后壳卷曲的卷曲屏。
  15. 一种柔性显示屏的制备方法，其特征在于，所述方法包括：
    提供触控膜层、显示面板、第一调节层、第二调节层和粘结层，其中，所述第一调节层为环烯烃聚合物COP层，第二调节层为胶层；
    将所述第二调节层设在所述触控膜层和所述第一调节层之间；
    将所述粘结层设在所述第一调节层和所述显示面板的出光面之间，形成柔性显示屏。
  16. 根据权利要求15所述的制备方法，其特征在于，所述提供触控膜层，包括：
    在衬底上形成剥离层；
    在所述剥离层上形成金属架桥层；
    在所述剥离层和所述金属架桥层上设置第一绝缘层，并在所述第一绝缘层上形成一端与所述金属架桥层电连接的过孔；
    在所述第一绝缘层上形成相互交叉且绝缘的第一触控电极和第二触控电极，所述第一触控电极和所述第二触控电极中的其中一个触控电极在交叉处断开并通过所述过孔与金属架桥层接通；
    在所述第一触控电极、所述第二触控电极和所述第一绝缘层上设置第二绝缘层；
    将所述衬底与所述剥离层分离，形成所述触控膜层。
  17. 根据权利要求15或16所述的制备方法，其特征在于，所述将所述第二调节层设在所述触控膜层和所述第一调节层之间，包括：
    在所述第一调节层上形成所述第二调节层；
    将所述触控膜层设在所述第二调节层背向所述第一调节层的一面上。
  18. 根据权利要求15-17任一所述的制备方法，其特征在于，所述将所述粘结层设在所述第一调节层和所述显示面板的出光面之间，包括：
    在所述显示面板的出光面上形成所述粘结层；
    将所述第一调节层与所述粘结层粘合，形成所述柔性显示屏；
    或者，
    在所述第一调节层朝向所述显示面板的一面上形成所述粘结层；
    将所述显示面板的出光面与所述粘结层粘合，形成所述柔性显示屏。
  19. 一种柔性显示屏的制备方法，其特征在于，所述方法包括：
    提供触控膜层、显示面板和粘结层；
    将所述粘结层设在所述触控膜层和所述显示面板的出光面之间，形成柔性显示屏。
  20. 根据权利要求19所述的制备方法，其特征在于，所述提供触控膜层，包括：
    在衬底上形成剥离层；
    在所述剥离层上形成金属架桥层；
    在所述剥离层和所述金属架桥层上设置第一绝缘层，并在所述第一绝缘层上形成一端与所述金属架桥层电连接的过孔；
    在所述第一绝缘层上形成相互交叉且绝缘的第一触控电极和第二触控电极，所述第一触控电极和所述第二触控电极中的其中一个触控电极在交叉处断开并通过所述过孔与金属架桥层接通；
    在所述第一触控电极、所述第二触控电极和所述第一绝缘层上设置第二绝缘层；
    将所述衬底与所述剥离层分离，形成所述触控膜层。
  21. 根据权利要求20所述的制备方法，其特征在于，所述将所述粘结层设在所述触控膜层和所述显示面板的出光面之间，包括：
    在所述显示面板的出光面上形成所述粘结层；
    将所述触控膜层的所述剥离层与所述粘结层粘合，形成所述柔性显示屏；
    或者，
    所述剥离层背向所述第一绝缘层的一面上形成所述粘结层；
    所述显示面板的出光面与所述粘结层粘合，形成所述柔性显示屏。
  22. 一种程序产品，其特征在于，所述程序产品包括计算机程序，所述计算机程序存储在可读存储介质中，通信装置的至少一个处理器可以从所述可读存储介质读取所述计算机程序，所述至少一个处理器执行所述计算机程序使得通信装置实施如权利要求15-18任意一项所述的方法或者如权利要求19-21任意一项所述的方法。
PCT/CN2020/112990 2019-09-02 2020-09-02 一种柔性显示屏及其制备方法和电子设备 WO2021043159A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US17/630,558 US20220261039A1 (en) 2019-09-02 2020-09-02 Flexible display and preparation method thereof, and electronic device
EP20861229.1A EP4020576A4 (en) 2019-09-02 2020-09-02 FLEXIBLE SCREEN, METHOD OF MANUFACTURE THEREOF AND ELECTRONIC DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910823881.XA CN112447792A (zh) 2019-09-02 2019-09-02 一种柔性显示屏及其制备方法和电子设备
CN201910823881.X 2019-09-02

Publications (1)

Publication Number Publication Date
WO2021043159A1 true WO2021043159A1 (zh) 2021-03-11

Family

ID=74735009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/112990 WO2021043159A1 (zh) 2019-09-02 2020-09-02 一种柔性显示屏及其制备方法和电子设备

Country Status (4)

Country Link
US (1) US20220261039A1 (zh)
EP (1) EP4020576A4 (zh)
CN (1) CN112447792A (zh)
WO (1) WO2021043159A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113972349A (zh) * 2021-10-19 2022-01-25 京东方科技集团股份有限公司 显示面板及其制造方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111752415B (zh) * 2020-06-24 2024-01-19 京东方科技集团股份有限公司 一种触控模组、其制备方法及显示装置
CN113452814A (zh) * 2021-05-21 2021-09-28 荣耀终端有限公司 传输组件及可折叠电子设备
KR20230019292A (ko) * 2021-07-29 2023-02-08 삼성디스플레이 주식회사 표시 장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106024840A (zh) * 2016-07-12 2016-10-12 上海天马微电子有限公司 柔性oled显示面板及其制作方法、柔性oled显示装置
CN106558279A (zh) * 2017-01-13 2017-04-05 京东方科技集团股份有限公司 柔性显示装置及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102080011B1 (ko) * 2013-06-13 2020-02-24 삼성디스플레이 주식회사 표시장치 및 그 제조방법
CN108461519A (zh) * 2017-02-21 2018-08-28 京东方科技集团股份有限公司 柔性显示面板及其制备方法、显示装置
KR102057065B1 (ko) * 2017-02-23 2019-12-18 동우 화인켐 주식회사 편광층 및 터치 센서 일체형 광학 적층체 및 이를 포함하는 화상 표시 장치
KR102117568B1 (ko) * 2017-02-28 2020-06-01 동우 화인켐 주식회사 윈도우 기판 및 이를 포함하는 화상 표시 장치
KR102505265B1 (ko) * 2017-06-23 2023-03-06 삼성디스플레이 주식회사 전자 장치
CN109659333A (zh) * 2017-10-11 2019-04-19 上海和辉光电有限公司 抗反射阻水氧组件及其制造方法、柔性显示器件

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106024840A (zh) * 2016-07-12 2016-10-12 上海天马微电子有限公司 柔性oled显示面板及其制作方法、柔性oled显示装置
CN106558279A (zh) * 2017-01-13 2017-04-05 京东方科技集团股份有限公司 柔性显示装置及其制备方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4020576A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113972349A (zh) * 2021-10-19 2022-01-25 京东方科技集团股份有限公司 显示面板及其制造方法
CN113972349B (zh) * 2021-10-19 2022-11-29 京东方科技集团股份有限公司 显示面板及其制造方法

Also Published As

Publication number Publication date
EP4020576A4 (en) 2023-05-31
EP4020576A1 (en) 2022-06-29
CN112447792A (zh) 2021-03-05
US20220261039A1 (en) 2022-08-18

Similar Documents

Publication Publication Date Title
WO2021043159A1 (zh) 一种柔性显示屏及其制备方法和电子设备
US11096274B2 (en) Flexible display device
JP7231265B2 (ja) 表示装置
WO2020168971A1 (zh) 一种折叠组件、折叠显示终端
US9691345B2 (en) Dual-display device and method of manufacturing the same
US20210349341A1 (en) Display device
US9419065B2 (en) Flexible displays
TW201918759A (zh) 柔性基板及柔性基板製作方法
TW201919227A (zh) 一種顯示器件
US11552263B2 (en) Display substrate with adhesion-enhancing layers, manufacturing method thereof, and display device
US9838766B2 (en) Speaker and microphone integrated display panel
KR20210111926A (ko) 표시 장치
CN110164936A (zh) 显示面板及其制备方法
WO2021189493A1 (zh) 显示模组及显示装置
CN113972249A (zh) 显示装置
CN114690462A (zh) 冲击防护层、控制方法、装置、显示模组和终端
KR102236034B1 (ko) 유연성 디스플레이 장치
WO2023179735A1 (zh) 显示组件及电子设备
CN115696985A (zh) 屏幕组件和电子设备

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: 20861229

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: 2020861229

Country of ref document: EP

Effective date: 20220324