WO2020155736A1 - 可折叠式终端设备用支撑片及可折叠式终端设备 - Google Patents

可折叠式终端设备用支撑片及可折叠式终端设备 Download PDF

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Publication number
WO2020155736A1
WO2020155736A1 PCT/CN2019/116625 CN2019116625W WO2020155736A1 WO 2020155736 A1 WO2020155736 A1 WO 2020155736A1 CN 2019116625 W CN2019116625 W CN 2019116625W WO 2020155736 A1 WO2020155736 A1 WO 2020155736A1
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WO
WIPO (PCT)
Prior art keywords
gap
support sheet
bendable area
gaps
bendable
Prior art date
Application number
PCT/CN2019/116625
Other languages
English (en)
French (fr)
Inventor
廖人晖
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 EP19912320.9A priority Critical patent/EP3893093A4/en
Priority to US17/427,352 priority patent/US20220103670A1/en
Priority to DE202020100190.6U priority patent/DE202020100190U1/de
Publication of WO2020155736A1 publication Critical patent/WO2020155736A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0266Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133305Flexible substrates, e.g. plastics, organic film
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/13338Input devices, e.g. touch panels
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1613Constructional details or arrangements for portable computers
    • G06F1/1633Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652Details 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16Constructional details or arrangements
    • G06F1/1613Constructional details or arrangements for portable computers
    • G06F1/1633Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G06F1/1681Details related solely to hinges
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • G09F9/301Indicating 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216Foldable in one direction, i.e. using a one degree of freedom hinge
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper

Definitions

  • This application relates to the technical field of terminal equipment, and in particular to a support sheet for a foldable terminal device and a foldable terminal device.
  • Foldable terminal devices can not only meet users' needs for large screens, but also avoid the problems of large size and inability to carry caused by large screens. This is one of the current development trends in the field of terminal devices.
  • Foldable terminal equipment usually includes a flexible display screen. Since the flexible display screen is relatively soft, the surface of the flexible display screen is poor in flatness, and wavy lines are prone to appear on the surface, which affects the quality of the displayed picture.
  • a support sheet 2 is provided on one side of the flexible display screen 1 to support the flexible display screen 1.
  • the thickness of the support sheet 2 is too thick, the bending movement of the flexible display screen 1 will be restricted.
  • the thickness of the support sheet 2 is too thin, although the bending activity of the flexible display screen 1 will not be restricted, the mechanical strength of the support sheet 2 that is too thin is not enough to effectively improve the flexible display screen 1. Surface roughness.
  • the present application provides a support sheet for a foldable terminal device and a foldable terminal device, which can improve the surface flatness of the terminal device without restricting the bending activities of the terminal device.
  • the present application provides a support sheet, the support sheet includes at least one bendable area, at least one bendable area is provided with a plurality of gaps, each gap has at least one opening, and each gap has at least one opening.
  • the direction of an opening is the same as the bending direction of the bendable area where the gap is located.
  • the area other than the gap area in the bendable area of the support sheet can enhance the mechanical strength of the bendable area of the support sheet, so as to better support the part of the flexible display screen corresponding to the bendable area of the support sheet. It is beneficial to improve the flatness of the entire surface of the terminal device.
  • the gap penetrates through two opposite main surfaces of the bendable area of the support sheet.
  • the gap can be made to have a strong ability to absorb stress, so that when the bendable area of the support sheet is bent, the bending activity of the bendable area can be more effectively guaranteed not to be restricted.
  • such a gap enables the bendable area of the support piece to be bent in both directions.
  • the gap is a groove opened on the bendable area of the support sheet.
  • the gap in combination with the second possible implementation manner of the first aspect, in a third possible implementation manner, includes a bottom surface and an inner wall surface, and a smooth transition between the bottom surface and the inner wall surface. In this way, stresses can be prevented from being concentrated at the corner positions where the inner wall surface and the bottom surface intersect, which is beneficial to improve the service life of the support sheet.
  • the ratio of the depth of the gap to the thickness of the support sheet ranges from 77/80 to 97/100.
  • Such a size ratio design is beneficial to further improve the surface flatness of the bendable area while ensuring that the bending activities of the bendable area are not restricted.
  • the cross-sectional shape of the gap is rectangular, or trapezoidal, or U-shaped, or semicircular, or triangular, and so on.
  • the cross-sectional shape is a cross-sectional shape obtained by cutting the gap along the direction perpendicular to the length of the bendable area where the gap is located and perpendicular to the main surface of the support sheet.
  • the cross-sectional shape of the gap is not limited to this.
  • the inner side wall surface of the gap is a flat surface, or a stepped surface, or an arc surface, or a curved surface, or a wavy surface, etc.
  • the shape of the inner wall surface of the gap is not limited to this.
  • the planar shape of the gap is a strip shape, a hole shape, or a diamond shape.
  • the planar shape of the gap is the shape of the orthographic projection of the gap on the main surface of the support sheet. In this way, several possible implementation forms of the planar shape of the gap are provided, of course, the planar shape of the gap is not limited to this.
  • a plurality of mutually parallel strip-shaped gaps are provided on the bendable area, and the length of each gap extends parallel to The direction in which the length of the bendable zone extends. In this way, the stress absorbed by each area in the bendable area is made more uniform, so as to better support the bending activity of the terminal device.
  • each row of gaps includes a plurality of gaps arranged at intervals.
  • the arrangement direction of the included plurality of gaps is parallel to the length extension direction of the bendable area.
  • Each gap is strip-shaped, which helps to improve the mechanical strength of the bendable area and can better absorb the stress generated during bending.
  • each gap is in the shape of a round hole or an elliptical hole, which not only helps to improve the mechanical strength of the bendable area, but also avoids stress concentration at the corners of the inner wall surface of the gap and improves the service life of the support sheet.
  • each row of gaps includes at least one strip-shaped gap and a plurality of round hole-shaped or elliptical hole-shaped gaps, and at least one round hole-shaped or elliptical hole-shaped gap is provided on both sides of each strip-shaped gap. It is beneficial to improve the mechanical strength of the bendable area, and can better absorb the stress generated during bending, and can also avoid stress concentration at the corners of the inner wall surface of the strip-shaped gap, and improve the service life of the support sheet.
  • each row of gaps includes a plurality of diamond-shaped gaps, which not only helps to improve the mechanical strength of the bendable area, but also can further increase the ability to absorb the stress generated during bending.
  • the support sheet further includes at least one non-bendable area, and the thickness of the non-gap area in the bendable area of the support sheet is less than or equal to the non-bendable area of the support sheet thickness of.
  • the two sides of the support sheet are the first side and the second side respectively, and the bendable area can face the second side.
  • One side or second side is bent.
  • each gap penetrates through the two opposite main surfaces of the bendable area, or each gap is a groove opened on the bendable area, and the opening of each gap Towards the first or second side.
  • the ways to achieve unidirectional bending of the bendable area are not limited to this.
  • the two sides of the support sheet are the first side and the second side, respectively, and the bendable area can face respectively The first side and the second side are bent.
  • each gap penetrates through two opposite main surfaces of the bendable area, or each gap is a groove opened on the bendable area, and some of the gaps have openings Toward the first side, the openings of other gaps are facing the second side, and the gaps with the openings toward the first side and the gaps with the openings toward the second side are alternately arranged.
  • the manner of realizing the bidirectional bending of the bendable area is not limited to this.
  • the multiple gaps provided on the bendable area of the support sheet are multiple gaps prepared by an etching process.
  • the supporting sheet includes a first substrate, and a second substrate superimposed on one side surface of the first substrate, and an area of the second substrate corresponding to the gap area to be formed is hollowed out to be in line with the first substrate.
  • the support sheet prepared in this way has uniform stress everywhere and high surface flatness.
  • the support sheet further includes at least one non-bendable area, and the thickness of the non-gap area of the bendable area is equal to the thickness of the non-bendable area. In this way, it is beneficial to improve the flatness of the entire surface of the terminal device.
  • the support sheet is a metal support sheet to improve the mechanical strength of the support sheet in terms of materials.
  • the thickness of the support sheet is greater than 0.05 mm and less than or equal to 0.5 mm, so as to effectively ensure the mechanical strength of the support sheet, so that the support sheet can better support the flexible display screen.
  • the present application provides a terminal device.
  • the terminal device includes a flexible display screen and a support sheet provided on one side of the flexible display screen.
  • the support sheet is as in the first aspect and the first to the first aspects of the first aspect.
  • the support sheet described in any one of fifteen possible implementations.
  • the above-mentioned terminal device is configured as a foldable terminal device, and a plurality of gaps are provided in the bendable area of the supporting sheet included in the terminal device, and these gaps can absorb the stress generated when the terminal device is bent. Therefore, the support sheet does not restrict the bending activities of the terminal device, and the support sheet can support the flexible display screen in the terminal device, thereby improving the surface flatness of the terminal device and further improving the display quality of the terminal device.
  • the gap of the supporting piece penetrates through two opposite main surfaces of the bendable area of the supporting piece.
  • the gap can be made to have a strong ability to absorb stress, so that when the bendable area of the support sheet is bent, the bending activity of the bendable area can be more effectively guaranteed not to be restricted.
  • such a gap can enable the bendable area of the support sheet to be bent in both directions.
  • the gap of the support piece is a groove opened on the bendable area of the support piece.
  • the gap between the support sheet includes a bottom surface and an inner wall surface, and a smooth transition between the bottom surface and the inner wall surface. In this way, stresses can be prevented from being concentrated at the corner positions where the inner wall surface and the bottom surface intersect, which is beneficial to improve the service life of the support sheet.
  • the ratio of the depth of the gap of the support sheet to the thickness of the support sheet ranges from 77/80 to 97/100.
  • Such a size ratio design is beneficial to further improve the surface flatness of the bendable area while ensuring that the bending activities of the bendable area are not restricted.
  • the cross-sectional shape of the gap of the supporting sheet is rectangular, or trapezoidal, or U-shaped, or semicircular, or triangular, and so on.
  • the cross-sectional shape is a cross-sectional shape obtained by cutting the gap along the direction perpendicular to the length of the bendable area where the gap is located and perpendicular to the main surface of the support sheet.
  • the cross-sectional shape of the gap is not limited to this.
  • the inner side wall surface of the gap of the support sheet is a flat surface, or a stepped surface, or a curved surface, or a curved surface, or a wavy surface, etc.
  • the shape of the inner wall surface of the gap is not limited to this.
  • the planar shape of the gap of the support sheet is a strip shape, or a hole shape, or a diamond shape.
  • the planar shape of the gap is the shape of the orthographic projection of the gap on the main surface of the support sheet. In this way, several possible implementation forms of the planar shape of the gap are provided, of course, the planar shape of the gap is not limited to this.
  • a plurality of mutually parallel strip-shaped gaps are provided on the bendable area of the support sheet, and the length of each gap extends The direction is parallel to the length extension direction of the bendable area. In this way, the stress absorbed by each area in the bendable area is made more uniform, so as to better support the bending activity of the terminal device.
  • a plurality of rows of gaps are provided on the bendable area of the support sheet, and each row of gaps includes a plurality of gaps arranged at intervals, each The arrangement direction of the plurality of gaps included in the row gap is parallel to the length extension direction of the bendable area.
  • Each gap is strip-shaped, which helps to improve the mechanical strength of the bendable area and can better absorb the stress generated during bending.
  • each gap is in the shape of a round hole or an elliptical hole, which not only helps to improve the mechanical strength of the bendable area, but also avoids stress concentration at the corners of the inner wall surface of the gap and improves the service life of the support sheet.
  • each row of gaps includes at least one strip-shaped gap and a plurality of round hole-shaped or elliptical hole-shaped gaps, and at least one round hole-shaped or elliptical hole-shaped gap is provided on both sides of each strip-shaped gap. It is beneficial to improve the mechanical strength of the bendable area, and can better absorb the stress generated during bending, and can also avoid stress concentration at the corners of the inner wall surface of the strip-shaped gap, and improve the service life of the support sheet.
  • each row of gaps includes a plurality of diamond-shaped gaps, which not only helps to improve the mechanical strength of the bendable area, but also can further increase the ability to absorb the stress generated during bending.
  • the support sheet further includes at least one non-bendable area, and the thickness of the non-gap area in the bendable area of the support sheet is less than or equal to the non-bendable area of the support sheet thickness of.
  • the two sides of the support sheet are the first side and the second side respectively, and the bendable area can face the second side.
  • One side or second side is bent.
  • each gap penetrates through the two opposite main surfaces of the bendable area, or each gap is a groove opened on the bendable area, and the opening of each gap Towards the first or second side.
  • the ways to achieve unidirectional bending of the bendable area are not limited to this.
  • the two sides of the support sheet are the first side and the second side, respectively, and the bendable area can face respectively The first side and the second side are bent.
  • each gap penetrates through two opposite main surfaces of the bendable area, or each gap is a groove opened on the bendable area, and some of the gaps have openings Toward the first side, the openings of other gaps are facing the second side, and the gaps with the openings toward the first side and the gaps with the openings toward the second side are alternately arranged.
  • the manner of realizing the bidirectional bending of the bendable area is not limited to this.
  • the multiple gaps provided on the bendable area of the support sheet are multiple gaps prepared by an etching process.
  • the supporting sheet includes a first substrate, and a second substrate superimposed on one side surface of the first substrate, and an area of the second substrate corresponding to the gap area to be formed is hollowed out to be in line with the first substrate.
  • the support sheet prepared in this way has uniform stress everywhere and high surface flatness.
  • the support sheet further includes at least one non-bendable area, and the thickness of the non-gap area of the bendable area is equal to the thickness of the non-bendable area. In this way, it is beneficial to improve the flatness of the entire surface of the terminal device.
  • the support sheet is a metal support sheet to improve the mechanical strength of the support sheet in terms of materials.
  • the thickness of the support sheet is greater than 0.05 mm and less than or equal to 0.5 mm, so as to effectively ensure the mechanical strength of the support sheet, so that the support sheet can better support the flexible display screen.
  • Figure 1 is a system architecture diagram of a terminal device provided in some embodiments of the application.
  • 2a to 2c are three cross-sectional structural diagrams of terminal equipment in related technologies
  • 2d and 2e are schematic diagrams of two flexible display screens with different surface flatness
  • 3a and 3b are schematic diagrams of three-dimensional structures in two different viewing angles when the terminal device in some embodiments of the application is deployed;
  • 3c and 3d are schematic diagrams of the three-dimensional structure in two different viewing angles when the terminal device in FIG. 3a is bent;
  • 4a to 4d are four structural cross-sectional views when the bendable area of the support sheet is bent in some embodiments of the application;
  • Figures 5a-5l are cross-sectional views of twelve cross-sectional shapes of the gap of the supporting sheet in some embodiments of the application;
  • 6a to 6e are schematic diagrams of five planar shapes of the gaps of the supporting pieces in some embodiments of the application.
  • 7a-7c are schematic diagrams of three arrangements of the gaps of the supporting pieces in some embodiments of the application.
  • 8a to 8f are schematic diagrams of six bending modes of the supporting sheet in some embodiments of the application.
  • 9a-9c are schematic diagrams of three different states when the terminal device is a mobile phone in some embodiments of the application.
  • 9d is a schematic diagram of a bent state when the terminal device is a tablet computer in some embodiments of the application.
  • Fig. 9e is a schematic diagram of a bent state when the terminal device is an electronic paper book in some embodiments of the application.
  • FIG. 10 is a cross-sectional structure diagram of a supporting sheet in some embodiments of the application.
  • the embodiments of the present application provide a supporting piece and terminal device, where the terminal device provided may be a mobile phone, a wearable device, AR (Augmented Reality) ⁇ VR (Virtual Reality) device, tablet computer, Any terminal such as a notebook computer, a UMPC (Ultra-mobile Personal Computer), a netbook, a PDA (Personal Digital Assistant, a personal digital assistant), etc., is not limited in the embodiments of the present application.
  • the provided terminal device may be a mobile phone 100.
  • the structure of the terminal device is exemplarily described below by taking the mobile phone 100 as an example.
  • the mobile phone 100 may specifically include: a processor 101, a radio frequency (RF) circuit 102, a memory 103, a touch screen 104, a Bluetooth device 105, one or more sensors 106, a Wi-Fi device 107, The positioning device 108, the audio circuit 109, the peripheral interface 110, the power supply device 111 and other components. These components can communicate through one or more communication buses or signal lines (not shown in Figure 1). Those skilled in the art can understand that the hardware structure shown in FIG. 1 does not constitute a limitation on the mobile phone 100, and the mobile phone 100 may include more or less components than shown in the figure, or combine some components, or different component arrangements. .
  • RF radio frequency
  • the components of the mobile phone 100 are specifically introduced below in conjunction with FIG. 1:
  • the processor 101 is the control center of the mobile phone 100. It uses various interfaces and lines to connect to various parts of the mobile phone 100. By running or executing an application program (App for short) stored in the memory 103, and calling data stored in the memory 103, Perform various functions of the mobile phone 100 and process data.
  • the processor 101 may include one or more processing units.
  • the processor 101 may be a Kirin 960 chip manufactured by Huawei Technologies Co., Ltd.
  • the radio frequency circuit 102 can be used for receiving and sending wireless signals during the process of sending and receiving information or talking.
  • the radio frequency circuit 102 may receive the downlink data of the base station and send it to the processor 101 for processing.
  • the uplink data is sent to the base station.
  • the radio frequency circuit includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency circuit 102 can also communicate with other devices through wireless communication.
  • the wireless communication can use any communication standard or protocol, including but not limited to global system for mobile communications, general packet radio service, code division multiple access, broadband code division multiple access, long-term evolution, email, short message service, etc.
  • the memory 103 is used to store application programs and data.
  • the processor 101 executes various functions and data processing of the mobile phone 100 by running the application programs and data stored in the memory 103.
  • the memory 103 mainly includes a program storage area and a data storage area.
  • the program storage area can store an operating system and an application program (such as a sound playback function, an image playback function, etc.) required by at least one function.
  • the data storage area can store data (such as audio data, phone book, etc.) created when the mobile phone 100 is used.
  • the memory 103 may include a high-speed random access memory, and may also include a non-volatile memory, such as a magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the memory 103 can store various operating systems, for example, the iOS operating system developed by Apple, the Android operating system developed by Google, etc.
  • the touch screen 104 may include a touch pad 104-1 and a display 104-2.
  • the touchpad 104-1 can collect touch events on or near the user of the mobile phone 100 (for example, the user uses a finger, a stylus, or any other suitable object on the touchpad 104-1 or on the touchpad 104 -1), and send the collected touch information to other devices such as the processor 101.
  • the user's touch event near the touchpad 104-1 can be called floating touch.
  • Floating touch may mean that the user does not need to directly touch the touchpad in order to select, move or drag a target (such as an icon, etc.), but only needs to be located near the terminal in order to perform a desired function.
  • the terms "touch”, “contact”, etc. do not imply direct contact with the touch screen, but nearby or close contact.
  • two types of capacitive sensors namely mutual capacitance sensors and self-capacitance sensors
  • these two kinds of capacitive sensors can be alternately arrayed on the touch panel 104-1.
  • the mutual capacitance sensor is used to implement normal traditional multi-touch, that is, to detect the gesture when the user touches the touchpad 104-1.
  • the self-capacitance sensor can generate a stronger signal than the mutual capacitance, so as to detect the sensing of a finger farther from the touch panel 104-1.
  • the mobile phone 100 can detect that it is above the screen, for example, from the touchpad 104-1. User gesture at 20mm.
  • the touchpad 104-1 capable of hovering touch can be implemented by capacitive, infrared light sensing, ultrasonic waves, and the like.
  • multiple types such as resistive, capacitive, infrared, and surface acoustic wave can be used to implement the touch panel 104-1.
  • the display screen 104-2 can be used to display information input by the user or information provided to the user, and various menus of the mobile phone 100.
  • the display screen 104-2 can be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the touchpad 104-1 can be overlaid on the display 104-2. When the touchpad 104-1 detects a touch event on or near it, it is sent to the processor 101 to determine the type of the touch event, and then processed The device 101 can provide corresponding visual output on the display screen 104-2 according to the type of the touch event.
  • the touchpad 104-1 and the display 104-2 are used as two independent components to realize the input and output functions of the mobile phone 100, but in some embodiments, the touchpad 104- 1 is integrated with the display 104-2 to realize the input and output functions of the mobile phone 100.
  • the touch screen 104 is formed by stacking multiple layers of materials. In the embodiment of this application, only the touch panel (layer) and the display screen (layer) are shown, and other layers are not described in the embodiment of this application. .
  • the touchpad 104-1 may cover the display 104-2, and the size of the touchpad 104-1 is larger than the size of the display 104-2, so that the display 104 -2 is completely covered under the touchpad 104-1, or the above-mentioned touchpad 104-1 can be arranged on the front of the mobile phone 100 in the form of a full panel, that is, the user's touch on the front of the mobile phone 100 can be sensed by the mobile phone, In this way, a full touch experience on the front of the phone can be realized.
  • the touchpad 104-1 is arranged on the front of the mobile phone 100 in the form of a full panel
  • the display 104-2 can also be arranged on the front of the mobile phone 100 in the form of a full panel, so that it is on the front of the mobile phone.
  • a frameless structure can be realized.
  • the mobile phone 100 may also have a fingerprint recognition function.
  • the fingerprint collecting device 112 may be arranged on the back of the mobile phone 100 (for example, under the rear camera), or the fingerprint collecting device 112 may be arranged on the front of the mobile phone 100 (for example, under the touch screen 104).
  • the fingerprint collection device 112 may be configured in the touch screen 104 to realize the fingerprint recognition function, that is, the fingerprint collection device 112 may be integrated with the touch screen 104 to realize the fingerprint recognition function of the mobile phone 100.
  • the fingerprint collection device 112 is configured in the touch screen 104, may be a part of the touch screen 104, or may be configured in the touch screen 104 in other ways.
  • the fingerprint collection device 112 can also be implemented as a full-board fingerprint collection device. Therefore, the touch screen 104 can be regarded as a panel that can perform fingerprint recognition at any position.
  • the fingerprint collection device 112 can send the collected fingerprint to the processor 101, so that the processor 101 can process the fingerprint (for example, fingerprint verification, etc.).
  • the main component of the fingerprint collection device 112 in the embodiment of the present application is a fingerprint sensor.
  • the fingerprint sensor can use any type of sensing technology, including but not limited to optical, capacitive, piezoelectric or ultrasonic sensing technology.
  • the mobile phone 100 may also include a Bluetooth device 105, which is used to implement data exchange between the mobile phone 100 and other short-distance terminals (such as mobile phones, smart watches, etc.).
  • the Bluetooth device 105 in the embodiment of the present application may be an integrated circuit or a Bluetooth chip.
  • the mobile phone 100 may also include at least one sensor 106, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display screen of the touch screen 104 according to the brightness of the ambient light, and the proximity sensor can turn off the display screen when the mobile phone 100 is moved to the ear Power supply.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when it is stationary. It can be used to identify mobile phone posture applications (such as horizontal and vertical screen switching, related Games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, percussion), etc.
  • the other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., which can be configured in the mobile phone 100, they will not be repeated here.
  • the Wi-Fi device 107 is used to provide the mobile phone 100 with network access that complies with Wi-Fi related standard protocols.
  • the mobile phone 100 can access the Wi-Fi access point through the Wi-Fi device 107 to help users send and receive emails, Browsing web pages and accessing streaming media, etc., it provides users with wireless broadband Internet access.
  • the Wi-Fi device 107 can also be used as a Wi-Fi wireless access point, which can provide Wi-Fi network access for other terminals.
  • the positioning device 108 is used to provide a geographic location for the mobile phone 100. It is understandable that the positioning device 108 may specifically be a receiver of a positioning system such as Global Positioning System (GPS) or Beidou satellite navigation system, Russian GLONASS (GLOBAL NAVIGATION SATELLITE SYSTEM, Global Satellite Navigation System). After receiving the geographic location sent by the above-mentioned positioning system, the positioning device 108 sends the information to the processor 101 for processing, or sends the information to the memory 103 for storage. In some other embodiments, the positioning device 108 may also be a receiver of the Assisted Global Positioning System (AGPS), and the AGPS system acts as an auxiliary server to assist the positioning device 108 in completing ranging and positioning services.
  • AGPS Assisted Global Positioning System
  • the auxiliary positioning server communicates with the terminal, such as the positioning device 108 (ie GPS receiver) of the mobile phone 100 via a wireless communication network, to provide positioning assistance.
  • the positioning device 108 may also be a Wi-Fi access point-based positioning technology. Since every Wi-Fi access point has a globally unique MAC address, the terminal can scan and collect the broadcast signals of surrounding Wi-Fi access points when Wi-Fi is turned on, so that Wi-Fi can be obtained. The MAC address broadcasted by the Fi access point.
  • the terminal sends the data (such as MAC address) that can identify Wi-Fi access points to the location server through the wireless communication network, and the location server retrieves the geographic location of each Wi-Fi access point and combines it with Wi-Fi broadcasting The strength of the signal is calculated, and the geographic location of the terminal is calculated and sent to the positioning device 108 of the terminal.
  • data such as MAC address
  • the location server retrieves the geographic location of each Wi-Fi access point and combines it with Wi-Fi broadcasting
  • the strength of the signal is calculated, and the geographic location of the terminal is calculated and sent to the positioning device 108 of the terminal.
  • the audio circuit 109, the speaker 113, and the microphone 114 can provide an audio interface between the user and the mobile phone 100.
  • the audio circuit 109 can transmit the electrical signal converted from the received audio data to the speaker 113, and the speaker 113 converts it into a sound signal for output.
  • the microphone 114 converts the collected sound signals into electrical signals, which are received by the audio circuit 109 and converted into audio data, and then output the audio data to the RF circuit 102 for transmission to, for example, another mobile phone, or output the audio data to Memory 103 for further processing.
  • the peripheral interface 110 is used to provide various interfaces for external input/output devices (such as a keyboard, a mouse, an external display, an external memory, a user identification module card, etc.). For example, it is connected to the mouse through the Universal Serial Bus (USB) interface, and the subscriber identification module card (Subscriber Identification Module, referred to as SIM card) provided by the telecom operator through the metal contacts on the card slot of the subscriber identification module Make a connection.
  • the peripheral interface 110 can be used to couple the aforementioned external input/output peripherals to the processor 101 and the memory 103.
  • the mobile phone 100 may also include a power supply device 111 (such as a battery and a power management chip) for supplying power to various components.
  • a power supply device 111 such as a battery and a power management chip
  • the battery can be logically connected to the processor 101 through the power management chip, so that the power supply device 111 can manage charging, discharging, and power consumption management. And other functions.
  • the mobile phone 100 may also include a camera (front camera and/or rear camera), a flash, a micro-projection device, a near field communication (NFC) device, etc., which will not be repeated here. .
  • a camera front camera and/or rear camera
  • a flash a flash
  • micro-projection device a micro-projection device
  • NFC near field communication
  • a terminal device such as the aforementioned mobile phone 100 may be configured as a foldable terminal device.
  • the foldable terminal device includes a flexible display screen, specifically in the mobile phone 100, that is, the touch screen 104 included in the mobile phone 100 is a flexible display screen.
  • the flexible display screen may be, for example, a flexible OLED (Organic Light-Emitting Diode, organic light emitting diode) display, a flexible liquid crystal display (Liquid Crystal Display, LCD for short), or other types of flexible display screens.
  • the mobile phone when the terminal device 200 is a mobile phone, the mobile phone includes a bendable area and a non-bendable area, so that when the mobile phone is in a folded state (as shown in Fig. 9c) As shown), the space occupied by the mobile phone can be made smaller, thereby facilitating storage and carrying of the mobile phone.
  • the mobile phone When the mobile phone is in the unfolded state (as shown in Fig. 9a or Fig. 9b), the mobile phone can have a larger display area, which is convenient for the user to operate and read the mobile phone.
  • the terminal device 200 may also be a tablet computer.
  • the tablet computer When the tablet computer is in a bent state, if the tablet computer is bent toward the display surface side, it can be A part of the tablet computer is placed horizontally and configured to display a keyboard to form an office operation area, and the other part is placed obliquely and configured to display images or text, thereby forming an office display area. In this way, it is convenient for users to perform mobile office operations or game operations.
  • the terminal device 200 may also be an electronic paper book. At this time, by bending the electronic paper book, the electronic paper book can be rendered more imitation The folding effect of books.
  • the flexible display screen of the foldable terminal device is relatively soft and the surface flatness is poor
  • the flexible display screen 1 ie, the flexible display screen 1 The side opposite to the display surface
  • the support sheet 2 is too thick to limit the bending activities of the terminal device, and too thin to effectively improve the surface flatness of the terminal device.
  • a thicker support sheet 2 is provided in the non-bendable area of the terminal device, and a thinner support sheet or no support sheet is provided in the bendable area of the terminal device ( Figure 2c shows the case where the bendable area is not provided with a support sheet), in this way, the flatness of the non-bendable area of the terminal device can be effectively improved without restricting the bending activities of the bendable area of the terminal device .
  • the thickness of the support sheet provided in the bendable area of the terminal device is thin, or even no support sheet is provided, the surface flatness of the bendable area of the terminal device cannot be effectively improved, and there will still be problems such as wavy lines. problem.
  • the surface flatness of the bendable area of the terminal device refers to the surface flatness of the bendable area of the terminal device when it is not bent, and the surface flatness of the bendable area when the bendable area is bent. Smoothness.
  • roundness refers to that the surface of the bendable area has no wavy lines or unevenness of unevenness when bending, or there are few such problems. The less surface wavy lines or unevenness of the bendable area during bending, the more smooth the surface of the bendable area during bending, and the smoother the surface of the bendable area during bending. high. Exemplarily, as shown in FIG.
  • the surface of the bendable area of the terminal device has no wavy lines during bending, the surface of the bendable area during bending has a higher degree of smoothness and a higher surface flatness. As shown in Fig. 2e, the surface of the bendable area of the terminal device has more wavy lines when it is bent, and the surface of the bendable area has a lower degree of smoothness and poor surface flatness during bending.
  • an embodiment of the present application provides a supporting sheet 2 and a terminal device 200, and the supporting sheet 2 is disposed on one side of the flexible display screen 1 included in the terminal device 200.
  • the support sheet 2 includes a bendable area, and a plurality of gaps 3 are arranged in the bendable area of the support sheet 2, and the direction of the opening of the gap 3 is the same as the bending direction of the bendable area. In this way, when the bendable area of the support sheet 2 is bent, the gap 3 can absorb the stress generated during the bending, and will not restrict the bending activity of the terminal device 200.
  • the area of the bendable area of the support sheet 2 other than the area where the gap 3 is located can enhance the mechanical strength of the bendable area of the support sheet 2, so as to better support the flexible display screen 1. ⁇ corresponds to the portion of the bendable area of the support sheet 2.
  • the support sheet 2 also has a non-bendable area
  • the non-bendable area of the support sheet 2 can provide a supporting effect for the corresponding area of the flexible display screen 1 and improve the surface flatness of the non-bendable area of the terminal device 200. Therefore, the flatness of the entire surface of the terminal device 200 is improved without restricting the bending activities of the terminal device 200.
  • Figures 9a-9c when the terminal device 200 is a mobile phone, by providing the support sheet provided by the embodiment of the present application on one side of its flexible display screen, not only The mobile phone can be bent, and when the mobile phone is in a fully unfolded state (as shown in Figure 9a) or in a semi-expanded state (as shown in Figure 9b), the bendable and non-bendable areas of the mobile phone can be both It has high flatness, so as to avoid affecting the image display of the mobile phone and the operation of the mobile phone by the user.
  • the support sheet provided by the embodiment of the present application can be implemented on one side of its flexible display screen. While being bendable, the bendable area and the non-bendable area of the tablet computer have higher flatness. For example, when a tablet computer is used for mobile office, the office operating area and office display area of the tablet computer can be made to have a higher flatness, thereby bringing a better office experience to the user.
  • the non-bendable area of the electronic paper book can be used as a text display area, and the flexible display screen
  • the support sheet provided by the embodiment of the application is provided on one side of the electronic paper book, which can ensure that the electronic paper book has a higher imitation book effect, while making the text display area of the e-book have a higher flatness, thereby avoiding the text display area Bending causes the displayed text to deform, which helps improve the user’s reading experience.
  • an embodiment of the present application provides a support sheet 2 and a terminal device 200.
  • the terminal device 200 includes a flexible display screen 1 and the support sheet 2 is arranged on one side of the flexible display screen 1.
  • the support sheet 2 includes at least one bendable area, each bendable area is provided with a plurality of gaps 3, each gap 3 has at least one opening, and each gap 3 has at least one opening in the direction of the gap 3
  • the bending directions of the bendable areas are the same, so that when the support sheet 2 is bent toward the bending direction, the gap 3 in the support sheet 2 can absorb the stress generated by the bending.
  • the non-gap area 4 of the support sheet 2 has a certain thickness (the The thickness may be equal to the thickness of the non-bendable area of the support sheet 2). In this way, the non-gap area 4 of the support sheet 2 can be used to improve the surface flatness of the bendable area of the terminal device 200.
  • the non-bendable area of the support sheet 2 has a certain thickness, which can support the corresponding area of the flexible display screen 1 and improve the surface flatness of the bendable area of the terminal device 200.
  • the non-gap area 4 can be used to improve the surface flatness of the bendable area of the terminal device 200, Moreover, since the bendable area of the support sheet 2 includes a gap 3, the gap 3 can absorb the stress generated by the bendable area when the bendable area is bent, so as not to cause bending activities in the bendable area of the terminal device 200. limit.
  • the non-bendable area of the support sheet 2 has a certain thickness, which can support the corresponding area of the flexible display screen 1 and improve the surface flatness of the bendable area of the terminal device 200.
  • the flexible display screen 1 is a single-sided display screen, including a display surface and a back surface opposite to the display surface.
  • the support sheet 2 is arranged on the flexible The back side of the display screen 1 can better support the flexible display screen 1 and avoid blocking the screen displayed by the flexible display screen 1.
  • the flexible display screen 1 and the support sheet 2 can be fixedly connected by pasting, bonding, welding, or the like.
  • the bending direction of the bendable area of the support sheet 2 refers to the direction perpendicular to the display surface of the terminal device and toward the side A of the terminal device D 1 , or, a direction D 2 perpendicular to the display surface of the terminal device and toward the B side of the terminal device.
  • the terminal device 200 is a single-sided display terminal device, the A side of the terminal device 200 is the display surface side, the B side is the back side, and the bending direction D 1 of the bendable area of the support sheet 2 is toward the display surface
  • the direction of the side bending, the bending direction D 2 of the bendable area of the support sheet 2 is the direction toward the back side (that is, the direction away from the display surface side).
  • the bendable area has a bending direction D 1 or D 2 , that is, the bendable area Can be bent in one direction.
  • the bendable area has two bending directions D 1 and D 2 , that is, the bendable area can be bent in both directions.
  • Each gap 3 described in the embodiment of the present application has at least one opening. It can be understood that the gap 3 has one opening or two openings.
  • the gap 3 has an opening that faces the A side or the B side of the terminal device 200, that is, the opening faces the bending direction D 1 or D 2 of the bendable area, in other words, the gap 3
  • the gap 3 In order to open the groove on the bendable area of the support sheet 2, the gap 3 does not penetrate through the two opposite main surfaces a 1 and a 2 of the support sheet 2. In this case, the depth d of the gap 3 is smaller than that of the support sheet thickness.
  • the depth d of the gap 3 in the embodiment of the present application refers to the size of the gap 3 in a direction perpendicular to the display surface of the terminal device 200.
  • the depth d of the gap 3 can be designed according to the curvature of the bendable area. If the bending radian of the bendable area is larger, it indicates that the stress generated when the bendable area is bent is larger, and the depth d of the gap 3 can be designed to be larger so as to absorb more stress. If the bending arc of the bendable area is small, it means that the stress generated when the bendable area is bent is small, and the depth d of the gap 3 can be designed to be small.
  • the ratio of the depth d of the gap 3 to the thickness of the support sheet 2 ranges from 77/80 to 97/100.
  • the thickness of the support sheet 2 is 0.08 mm, and the depth d of the gap 3 is 0.077 mm.
  • the thickness of the support sheet 2 is 0.10 mm, and the depth d of the gap 3 is 0.097 mm.
  • the two opposite main surfaces a 1 and a 2 of the supporting sheet 2 in the embodiments of the present application refer to the surface of the supporting sheet 2 that is in contact with the flexible display screen 1, and the supporting sheet 2 and the aforementioned On the opposite surface, the positions of the two main surfaces a 1 and a 2 are interchangeable.
  • the gap 3 can absorb the stress generated when the bendable area is bent, effectively ensuring that the bending activities of the bendable area are not restricted.
  • the non-gap area 4 that is, the area other than the area where the gap 3 is located
  • the non-gap area 4 in the bendable area has a certain thickness, which is beneficial to improve the mechanical strength of the bendable area.
  • the main surface of the support sheet 2 that is not penetrated by the gap 3 (that is, the main surface on the side opposite to the main surface where the opening of the gap 3 is located) is a continuous surface, and the bottom surface c of the gap 3 and the support sheet 2 are not gapped.
  • the gap 3 has one opening
  • the bendable area of the support sheet 2 It can be bent in one direction, and the bending direction is D 1 .
  • the bendable area of the support sheet 2 can be bent in one direction, and the bending direction is D 2 .
  • the bendable area of the support sheet 2 can be bent in one direction, and the bending direction is D 2 .
  • FIG. 4c among the multiple gaps 3 provided in the bendable area, a part of the gap 3 has an opening toward the A side of the terminal device 200, and another part of the gap 3 has an opening toward the B side of the terminal device 200.
  • the partial gaps 3 are arranged alternately, and the bendable area of the support sheet 2 can be bent in both directions, and the bending directions are D 1 and D 2 .
  • the interval between any two adjacent gaps 3 is equal. In this way, it is beneficial to make the ability of all parts of the bendable zone to absorb stress uniform, so that the bendable zone The stress of each part is uniform during bending.
  • the gap 3 has two openings, one of the two openings faces the A side of the terminal device 200, that is, the bending direction D 1 , and the other faces the B side of the terminal device 200, that is, the bending The direction D 2 , in other words, the gap 3 penetrates the two opposite main surfaces a 1 and a 2 of the support sheet 2.
  • the depth d of the gap 3 is equal to the thickness of the support sheet 2.
  • the gap 3 penetrates the two opposite main surfaces a 1 and a 2 of the support sheet 2, the gap 3 has a stronger ability to absorb the stress generated when the bendable area is bent, and can more effectively ensure the bendability
  • the bending activities of the bending zone are not restricted.
  • the non-gap area 4 in the bendable area has a certain thickness, which is beneficial to improve the mechanical strength of the bendable area. Therefore, without restricting the bending activities of the terminal device 200, the portion of the flexible display screen 1 corresponding to the bendable area of the support sheet 2 is better supported, and the surface flatness of the bendable area of the terminal device 200 is improved. Therefore, the flatness of the entire surface of the terminal device 200 is improved.
  • the bendable area of the support sheet 2 is provided with such a gap 3 with two openings, so that the bendable area of the support sheet 2 can be bent in both directions, and the bending directions are D 1 and D 2 .
  • the cross-sectional shape of the gap 3 is not limited to rectangular, trapezoidal, U-shaped, semicircular, triangular, or irregular shapes. It should be noted that the cross-sectional shape of the gap 3 in the embodiments of the present application refers to a direction perpendicular to the length of the bendable area and perpendicular to the display surface of the terminal device (equivalent to, along the direction perpendicular to the The length of the bending zone extends in the direction perpendicular to the main surface a 1 or a 2 of the support sheet 2) the cross-sectional shape obtained by cutting the gap 3, for example, as shown in FIG.
  • the cross-sectional shape of the gap 3 It is the cross-sectional shape obtained by cutting the gap 3 along the cross-sectional line AA'.
  • the length extension direction of the bendable area refers to a direction parallel to the bending axis OO' of the bendable area, and the length extension direction of the bendable area may be in a plane parallel to the display surface of the terminal device 200 Any direction, for example, the extending direction of the length of the bendable area is parallel to the horizontal direction of the screen display, or parallel to the vertical direction of the screen display, or an acute angle with the horizontal direction of the screen display.
  • the inner wall surface b of the gap may be a flat surface, or a stepped surface, or a curved surface, or a curved surface, or a wavy surface.
  • the inner wall surface b of the gap 3 in the embodiment of the present application refers to the side surface of the gap 3 and the support sheet 2 (that is, the surface of the support sheet 2 except for the two main surfaces a 1 and a 2 ) The opposite side.
  • the depth d of the gap 3 is equal to the thickness of the support sheet 2, that is, the gap 3 penetrates through the two opposite main surfaces a 1 and a 2 of the support sheet 2, and the cross-sectional shape of the gap 3 is rectangular.
  • the inner wall surface b of the gap 3 is flat.
  • the gap 3 has two openings, one of which is located on the main surface a 1 of the support sheet 2, and the other is located on the main surface a 2 of the support sheet 2, and the width w of the two openings is equal. Since the gap 3 penetrates through the two opposed main surfaces a 1 and a 2 of the support sheet 2, the gap 3 can absorb more stress during bending.
  • the bendable area where the gap 3 is located can be bent in both directions. Furthermore, since the widths w of the two openings of the gap 3 are equal, it is possible to achieve equal bending radians of the two-way bending of the bendable area where the gap 3 is located.
  • the width w of the opening of the gap 3 in the embodiment of the present application refers to the dimension of the gap 3 along the extension direction perpendicular to the length of the bendable area.
  • the width w of the opening of the gap 3 can be designed according to the curvature of the bendable area. If the bending arc of the bendable area is larger, it indicates that the stress generated when the bendable area is bent is larger, and the width w of the opening of the gap 3 can be designed to be larger to facilitate absorbing more stress. If the bending radius of the bendable area is small, indicating that the stress generated when the bendable area is bent is small, the width w of the opening of the gap 3 can be designed to be small.
  • the depth of the gap 3 is equal to the thickness of the support sheet 2, that is, the gap 3 penetrates through the two opposite main surfaces a 1 and a 2 of the support sheet 2, and the cross-sectional shape of the gap 3 is trapezoidal.
  • the inner wall surface b of 3 is flat.
  • the gap 3 has two openings, one of which is located on the main surface a 1 of the support sheet 2, and the other is located on the main surface a 2 of the support sheet 2, and the width w 1 of one of the openings is greater than that of the other opening. Width w 2 . Since the gap 3 penetrates through the two opposed main surfaces a 1 and a 2 of the support sheet 2, the gap 3 can absorb more stress during bending.
  • the bendable area where the gap 3 is located can be bent in both directions.
  • the widths of the two openings of the gap 3 are not equal, so it can be realized that the bending arcs of the two-way bending of the bendable area where the gap 3 is located are not equal.
  • the depth of the gap 3 is equal to the thickness of the support sheet 2, that is, the gap 3 penetrates through the two opposite main surfaces a 1 and a 2 of the support sheet 2, and the cross-sectional shape of the gap 3 is two widths. (That is, the size of the rectangle in the direction parallel to the main surface of the support sheet 2) is the shape formed by superimposing different rectangles, and the inner wall surface of the gap 3 is a stepped surface.
  • the gap 3 has two openings, one of which is located on the main surface a 1 of the support sheet 2, and the other is located on the main surface a 2 of the support sheet 2, and the width w 1 of one of the openings is greater than that of the other opening.
  • Width w 2 Since the gap 3 penetrates through the two opposed main surfaces a 1 and a 2 of the support sheet 2, the gap 3 can absorb more stress during bending. In addition, since the two main surfaces a 1 and a 2 of the supporting sheet 2 have openings of the gap 3, the bendable area where the gap 3 is located can be bent in both directions. The widths of the two openings of the gap 3 are not equal, so it can be realized that the bending arcs of the two-way bending of the bendable area where the gap 3 is located are not equal.
  • the design shown in Figs. 5b and 5c is suitable for terminal devices 200 with different bending radians in which the bendable area can be bent in both directions.
  • the bending arcs of the two bending directions D 1 and D 2 of the bendable area are ⁇ and ⁇ respectively, ⁇ > ⁇ , this indicates the stress generated by the bending of the bendable area toward the bending direction D 1 is greater than the bending stress is toward the direction D 2 produced by bending, bending toward the direction of the gap 3 is D can be greater than the width of the opening 1 is bent toward the direction of the width D 2 of the opening so as to bend toward the direction D
  • the opening of 1 absorbs more stress.
  • the inner wall surface b of the gap 3 is a stepped surface, in the direction perpendicular to the main surface of the support sheet 2, the inner wall surface b of the gap 3 is not limited to only include one step (Figure 5c shows the side The wall surface b includes one step), and the inner wall surface b of the gap 3 may also include two or more steps. That is to say, the cross-sectional shape of the gap 3 is not limited to the shape formed by superimposing two rectangles with different widths, and can also be two or more rectangles superimposed sequentially along the direction perpendicular to the main surface of the support sheet 2. The following shape, wherein the widths of the two or more rectangles increase or decrease sequentially along the direction perpendicular to the main surface of the support sheet 2.
  • the side wall surface b of the gap 3 can also be configured in other structures. Please refer to FIG. 5d. In some embodiments of the present application, the sidewall surface b of the gap 3 is arc-shaped. Please refer to FIG. 5e. In other embodiments of the present application, the sidewall surface b of the gap 3 is wavy.
  • the depth d of the gap 3 is less than the thickness of the support sheet 2, that is, the gap 3 does not penetrate the two opposite main surfaces a 1 and a 2 of the support sheet 2, and the cross-sectional shape of the gap 3 is rectangular.
  • the inner wall surface b of the gap 3 is flat.
  • the gap 3 has an opening located on a certain main surface of the supporting sheet 2. Since the main surface of the support sheet 2 not penetrated by the gap 3 is a continuous surface, the mechanical strength of the bendable area of the support sheet 2 can be further improved, thereby further improving the surface flatness of the bendable area of the terminal device 200.
  • the depth d of the gap 3 is less than the thickness of the support sheet 2, that is, the gap 3 does not penetrate the two opposite main surfaces a 1 and a 2 of the support sheet 2, and the cross-sectional shape of the gap 3 is trapezoidal.
  • the inner wall surface b of the gap 3 is flat. In this way, the gap 3 has an opening located on a certain main surface of the supporting sheet 2.
  • the angle between the inner side wall surface of the gap 3 and the bottom surface of the gap 3 is an obtuse angle, that is, in the direction perpendicular to the main surface of the support sheet 2 and the main surface of the gap 3 opening to the bottom surface of the gap 3, the opening The width gradually decreases, so the gap 3 can absorb more stress generated when the bendable area is bent.
  • the side wall surface b of the gap 3 can also be configured in other structures.
  • the sidewall surface b of the gap 3 is stepped.
  • the sidewall surface b of the gap 3 is arc-shaped.
  • the sidewall surface b of the gap 3 is wave-shaped.
  • the transition between the inner wall surface b and the bottom surface c of the gap 3 is smooth.
  • the intersecting position e of the inner wall surface b and the bottom surface c of the gap 3 is designed to be rounded, thus It can avoid the stress concentration at the corner position where the inner side wall surface b and the bottom surface c intersect, so as to reduce the loss of the fatigue strength of the support sheet 2 and improve the service life of the support sheet 2.
  • the planar shape of the gap 3 is not limited to a strip shape, a hole shape, a diamond shape, or an irregular shape. It should be noted that the planar shape of the gap 3 described in the embodiments of the present application refers to the orthographic projection of the gap 3 on the display surface of the terminal device (equivalent to being on the main surface a 1 or a 2 of the supporting sheet 2 Orthographic projection). The planar shape of the gap 3 can be understood as the shape of the opening of the gap 3.
  • the planar shape of the gap 3 is a strip. Specifically, it may be a linear strip or a wavy strip.
  • the length extension direction of the gap 3 is consistent with the length extension direction L of the bendable area where the gap 3 is located.
  • the width w of the gap 3 can be kept constant or changed along the length extending direction L of the gap 3. It should be noted that if the width w of the gap 3 changes in the extending direction along the length of the gap 3, the width w of the gap 3 refers to its average width.
  • the planar shape of the gap 3 is a hole shape, such as a round hole, an elliptical hole, or a square hole.
  • the planar shape of the gap 3 is a round hole or an elliptical hole, there are no corners or sharp corners on the inner wall surface of the gap 3, which prevents stress from being concentrated at the corners or sharp corners, so that the gap 3 The stress is more uniform, which is beneficial to improve the service life of the support sheet 2.
  • the plurality of gaps 3 provided in the bendable area of the support sheet 2 includes a plurality of gaps 3 with a strip-shaped planar shape and a plurality of circular holes with a planar shape. Or an elliptical hole-shaped gap 3, and the multiple gaps 3 provided in the bendable area are arranged in multiple rows.
  • Each row of gaps 3 includes at least one strip-shaped gap and a plurality of round hole-shaped or elliptical hole-shaped gaps, and at least one round hole-shaped or elliptical hole-shaped gap is provided on both sides of each strip-shaped gap.
  • the multiple gaps 3 provided in the bendable area can absorb stress to a greater extent, while reducing stress concentration at the corners or sharp corners of the inner wall surface of the strip-shaped gap 3, thereby avoiding bendability.
  • the bending area breaks from the strip-shaped gap 3 after multiple bendings, which improves the service life of the support sheet 2.
  • a single bendable area in the support sheet 2 please refer to Figs. 7a to 7c.
  • the arrangement pattern of the multiple gaps 3 provided on the bendable area can be set arbitrarily according to actual needs.
  • each gap 3 is a groove opened on the bendable area of the support sheet 2.
  • the gap between every two adjacent gaps 3 in the plurality of gaps 3 is equal, so that the stress absorbed by each area in the bendable area is more uniform, thereby better supporting the bending activity of the terminal device 200.
  • each row includes a plurality of strip-shaped gaps 3 arranged at intervals.
  • the depth of each gap 3 is equal to the thickness of the support sheet 2, that is, each gap 3 passes through the two opposite main surfaces a 1 and a 2 of the bendable area of the support sheet 2 .
  • a plurality of gaps 3 included in two adjacent rows of gaps 3 are arranged staggered to each other, which is conducive to improving the mechanical strength of the bendable area, thereby improving
  • the portion of the flexible display screen 1 corresponding to the bendable area of the support sheet 2 is well supported, and the surface flatness of the terminal device 200 is improved.
  • each row of gaps 3 includes a plurality of diamond-shaped gaps 3 arranged at intervals, and each row includes a plurality of diamonds.
  • the arrangement direction of the shaped gap 3 is parallel to the length extension direction of the bendable area.
  • the depth of each diamond-shaped gap 3 is equal to the thickness of the support sheet 2, that is, each gap 3 passes through the two opposite main surfaces a 1 and a 2 of the bendable area of the support sheet 2 .
  • the flexible display screen 1 can better support the portion of the flexible display screen 1 corresponding to the bendable area of the support sheet 2 and improve the surface flatness of the terminal device 200.
  • the diamond-shaped gap 3 may be a standard diamond shape.
  • the rhombus-shaped gap 3 can also be similar to a standard rhombus.
  • the arc-shaped transition surfaces are set at the two ends of the standard rhombus at the sharp corners of the standard rhombus to avoid stress in the rhombus.
  • the two ends of the gap 3 accumulate at the sharp corners, so as to prevent the bendable area of the support sheet 2 from breaking after multiple bendings, and improve the service life of the support sheet 2.
  • each row of gaps 3 in addition to the complete diamond-shaped gap 3, it may also include a partial diamond-shaped gap 3.
  • each row of gaps 3 includes half of the diamond-shaped gap 3 . This is beneficial to arranging more gaps 3 in the bendable area, thereby further improving the bending performance of the supporting sheet 2.
  • the bendable area is provided with a plurality of rows of gaps 3 parallel to each other, each row includes a plurality of gaps 3 arranged at intervals, and the arrangement direction of the plurality of gaps 3 included in each row is parallel In the direction of the length of the bendable zone.
  • Each row includes at least one strip-shaped gap 3 and a plurality of round hole-shaped or elliptical hole-shaped gaps 3, and at least one hole-shaped gap is provided on both sides of each strip-shaped gap.
  • the strip-shaped gaps 3 and the circular hole-shaped or elliptical hole-shaped gaps 3 are alternately arranged, and the outermost ends of each row are circular or elliptical holes. ⁇ gap 3.
  • Such an arrangement can ensure that the multiple gaps 3 provided in the bendable area can absorb stress to a greater extent, while reducing stress concentration at the corners or sharp corners of the inner wall surface of the strip-shaped gap 3, thereby avoiding The bendable area breaks from the strip-shaped gap 3 after multiple bends, which improves the service life of the support sheet 2.
  • the arrangement density of the multiple gaps 3 in the bendable area of the support sheet 2 can be designed according to actual needs. If the bending arc of the bendable area is larger, it indicates that the stress generated when the bendable area is bent is larger, and the arrangement density of the multiple gaps 3 can be designed to be larger in order to absorb more stress. If the bending radian of the bendable area is small, indicating that the stress generated when the bendable area is bent is small, the arrangement density of the multiple gaps 3 can be designed to be small.
  • the support sheet 2 further includes at least one non-bendable area, and the thickness h 1 of the non-gap area 4 in the bendable area of the support sheet 2 is less than or equal to the support sheet 2.
  • the thickness of the non-bendable zone h 2 With this design, the part of the flexible display screen 1 corresponding to the non-bendable area of the support sheet 2 can be well supported, which is beneficial to improve the flatness of the flexible display screen 1.
  • the bending performance of the support sheet can be improved, and thus the support sheet 2 can have a larger bending angle.
  • the thickness h 1 of the non-gap area 4 in the bendable area of the support sheet 2 is equal to the thickness h 2 of the non-bendable area of the support sheet 2 .
  • the mechanical strength of the bendable area 21 of the support sheet 2 is relatively high.
  • the thickness h 1 of the non-gap area 4 in the bendable area of the support sheet 2 is smaller than the thickness h 2 of the non-bendable area of the support sheet 2 .
  • the bending performance of the support sheet can be improved, so that the support sheet 2 has a larger bending angle.
  • the thickness h 1 of the non-gap region 4 in the bendable area can be reduced by means such as dry etching, wet etching, laser etching, etc.
  • a plurality of gaps 3 are provided in the bendable area of the support sheet 2 to absorb the stress generated when the terminal device 200 is bent.
  • the thickness of the support sheet 2 can be appropriately increased to further enhance the mechanical strength of the support sheet 2, so that the support sheet can better improve the surface of the terminal device 200 Flatness.
  • the thickness of the support sheet is greater than 0.05 mm.
  • the thickness of the support sheet 2 is greater than 0.05 mm and less than or equal to 0.5 mm.
  • the gap 3 can be prepared by removing the material on the support sheet 2 where the gap 3 is to be formed. For example, laser etching molding, plasma etching molding, wet etching molding, etc. may be used. The gap 3 is prepared, and the stress in all parts of the support sheet 2 prepared in this way is uniform and the surface smoothness is high.
  • the support sheet 2 may be prepared by stacking multiple substrates.
  • the first substrate 21 is provided first, and then the second substrate 22 is superimposed on one surface of the first substrate 21.
  • the second substrate 22 includes a hollowed-out area f 1 and a non-hollowed area f 2 , wherein the hollowed-out area f 1 corresponds to the area in the support sheet 2 where the gap 3 is to be formed, and the non-hollowed area f 2 corresponds to the non-gap area in the support sheet 2 4.
  • the second base material 22 is hollowed out in the area of the support sheet 2 where the gap 3 is to be formed, so that the thickness of the area where the gap 3 is to be formed in the support sheet 2 is the thickness of the first base material 21, and the second base material 22 is on the support sheet 2
  • the non-gap area 4 is not hollowed out, so that the thickness of the non-gap area 4 in the support sheet 2 reaches the thickness of the support sheet 2 to be formed, thereby forming the support sheet 2 with the required gap 3.
  • the gap 3 of the support sheet 2 prepared in this way is a gap 3 with one opening, that is, a gap 3 that does not penetrate the two main surfaces of the support sheet 2.
  • the support sheet 2 prepared in this way has uniform stress everywhere and high surface flatness.
  • the first substrate 21 and the second substrate 22 may be connected to each other by bonding, diffusion molding, or the like.
  • the gap 3 can also be prepared by other processing methods, for example, it can be prepared by roll forming, mechanical cutting and forming, etc., which will not be described in detail here.
  • the material of the support sheet 2 can be any material with a certain mechanical strength.
  • the material of the support sheet is a material with high mechanical strength, good surface flatness, and strong bendability.
  • the support sheet 2 is a metal support sheet.
  • the support sheet 2 is a stainless steel support sheet or a copper support sheet.
  • the support sheet 2 in addition to at least one bendable area, may also include at least one non-bendable area, and the non-bendable area is connected to the bendable area.
  • the thickness of the non-bendable area is equal to the thickness of the non-gap area 4 in the bendable area, so that the portion of the flexible display screen 1 corresponding to the non-bendable area of the support sheet 2 can also be well supported, thereby improving the terminal equipment 200 The flatness of the entire display surface.
  • the support sheet 2 of the terminal device 200 has a bendable area, and the bendable area can be bent toward the bending direction D 1 or D 2 (FIG. 8a Bending of the bendable area When the direction is D 1 ).
  • a plurality of gaps 3 in the bendable area of the support sheet are arranged at intervals, and each gap 3 can adopt two main surfaces a that do not penetrate the support sheet 2 In the structures of 1 and a 2 , the opening of each gap 3 faces the bending direction of the terminal device 200.
  • the supporting sheet 2 of the terminal device 200 has a bendable area, and the bendable area can be bent toward the bending directions D 1 and D 2 .
  • a plurality of gaps 3 in the bendable area of the support sheet 2 are arranged at intervals, and each gap 3 can adopt two main surfaces a 1 through the support sheet. and the structure of a 2, 3 each gap two openings are bent towards the two directions of the terminal apparatus 200.
  • the support sheet 2 of the terminal device 200 has two bent regions, which can be a bendable region is bent towards the bending direction D 1 (second bendable FIG. 8c region), a further bendable region D 2 can be bent towards the (first bending region in FIG. 8c).
  • the support sheet 2 is bent toward the direction D 1 can be bent in the bendable zones, each gap 3 is not employed in the second through the support plate
  • the structure of the two main surfaces a 1 and a 2 , and the opening of each gap 3 faces the bending direction D 1 .
  • each of the gaps does not penetrate the support plate 3 may employ two main surfaces of a structure and a 2 1 2, and each gap The opening of 3 faces the bending direction D 2 .
  • the support sheet 2 of the terminal device 200 has two bendable areas, one of the bendable areas has a greater curvature than the other bendable area, so that the terminal device 200 can achieve Folding bend.
  • the design of parameters such as width can make the curvature of one bendable area larger than the curvature of the other bendable area.
  • the terminal device 200 can achieve a rolling bending, and the terminal device 200 can be formed like a rolling bending
  • the shape of the reel from the end of the support sheet 2 at the center of the reel to the end at the outermost side of the reel, the curvature of the bendable area of the support sheet 2 gradually decreases.
  • parameters such as the number of gaps 3 in the bendable area, the arrangement density of gaps 3 in the bendable area, the orientation of the opening of the gap 3, the depth of the gap 3, the width of the gap 3, etc.
  • the curvature of the bendable area of the support sheet 2 gradually decreases from the center of the reel to the outermost side of the reel.
  • all or most of the support sheet 2 of the terminal device 200 is a bendable area, and the terminal device 200 can achieve sliding bending.
  • the terminal device 200 is similar to a chain in the wheel when the terminal device 200 performs sliding bending. With the movement on the disc, all parts of the bendable area of the support sheet can be bent with the same curvature.
  • parameters such as the number of gaps 3 in the bendable area, the arrangement density of gaps 3 in the bendable area, the orientation of the opening of the gap 3, the depth of the gap 3, the width of the gap 3, etc. Therefore, the curvature of each part of the bendable area of the support sheet 2 is the same.
  • the bending form of the terminal device 200 is not limited to the above types.
  • the cross-sectional shape, plane shape, depth, width, layout pattern, and layout of the gap in the support sheet 2 Design and combination of density, etc., and by extending the number of bendable areas, the number of non-bendable areas, the area of the bendable area, the curvature of the bendable area, and the length of the bendable area in the support sheet 2
  • the design and combination of directions, etc. can realize a variety of other bending forms, which will not be detailed here.
  • the gap 3 can be more thorough and smooth. Cleanly release the stress generated during the bending process of the support sheet 2 so that there is less residual stress in the support sheet 2 after expansion, or even no residual stress, which avoids residual stress and accumulation of stress after the support sheet 2 is bent and unfolded. The problem of buckling and deformation of the terminal device caused by this is solved, and the surface flatness of the terminal device 200 after bending and unfolding is improved.
  • the terminal device 200 provided by the embodiment of the present application not only has high flatness of the entire surface in the bent state, and the bending activities are not restricted, but also the surface will not be arched and flat in the bent and unfolded state. The degree is also higher, so that the screen display effect of the terminal device 200 in the above two states is better.

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Abstract

本申请提供了一种可折叠式终端设备用支撑片及可折叠式终端设备,涉及终端设备技术领域,能够在不对终端设备的弯折活动造成限制的前提下,提高终端设备的表面平整度。上述终端设备包括柔性显示屏,及设置在柔性显示屏的一侧的支撑片。上述支撑片包括至少一个可弯折区,至少一个可弯折区内设置有多个间隙,每个间隙具有至少一个开口,每个间隙中至少有一个开口的朝向与该间隙所在的可弯折区的弯折方向相同。当支撑片的可弯折区弯折时,间隙能够吸收弯折时所产生的应力,不会对终端设备的弯折活动造成限制,并且支撑片能够为柔性显示屏提供支撑作用,提高终端设备的表面平整度。本申请所提供的终端设备可折叠,具有提供大尺寸显示、便于携带等功能。

Description

可折叠式终端设备用支撑片及可折叠式终端设备
本申请要求于2019年02月01日提交中国国家知识产权局、申请号为201910105747.6、申请名称为“可折叠式终端设备用支撑片及可折叠式终端设备”的中国专利申请和于2019年04月25日提交中国国家知识产权局、申请号为201910340873.X、申请名称为“可折叠式终端设备用支撑片及可折叠式终端设备”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
本申请涉及终端设备技术领域,尤其涉及一种可折叠式终端设备用支撑片及可折叠式终端设备。
背景技术
可折叠式终端设备既能够满足用户对屏幕大尺寸的需求,又能够避免大尺寸屏幕所带来的体积大、不便携带的问题,是目前终端设备领域发展的趋势之一。
可折叠式终端设备通常包括柔性显示屏。由于柔性显示屏比较柔软,因此柔性显示屏的表面平整度较差,其表面容易出现波浪形纹路,影响所显示的画面的质量。
在一些相关技术中,如图2a和2b所示,为了提高柔性显示屏1的表面平整度,通过在柔性显示屏1的一侧设置支撑片2,来支撑柔性显示屏1。然而,如图2a所示,若支撑片2的厚度过厚,则会限制柔性显示屏1的弯折活动。如图2b所示,若支撑片2的厚度过薄,虽然不会对柔性显示屏1的弯折活动造成限制,但是过薄的支撑片2的机械强度不够,无法有效改善柔性显示屏1的表面平整度。
发明内容
本申请提供一种可折叠式终端设备用支撑片及可折叠式终端设备,能够在不对终端设备的弯折活动造成限制的前提下,提高终端设备的表面平整度。
为达到上述目的,本申请采用如下技术方案:
第一方面,本申请提供一种支撑片,该支撑片包括至少一个可弯折区,至少一个可弯折区内设置有多个间隙,每个间隙具有至少一个开口,每个间隙中至少有一个开口的朝向与该间隙所在的可弯折区的弯折方向相同。这样,当支撑片应用于终端设备中时,支撑片位于终端设备所包括的柔性显示屏的一侧,支撑片的可弯折区弯折时,间隙能够吸收弯折时所产生的应力,不会对终端设备的弯折活动造成限制。并且,支撑片的可弯折区中除间隙区以外的区域可以增强支撑片的可弯折区的机械强度,从而较好地支撑柔性显示屏中对应支撑片的可弯折区的部分,进而有利于提高终端设备整个表面的平整度。
结合第一方面,在第一种可能的实现方式中,间隙贯通支撑片的可弯折区的相对的两个主表面。这样,可以使缝隙具有较强地吸收应力的能力,从而在支撑片的可弯折区发生弯折时,更有效地保证可弯折区的弯折活动不受限制。并且,这样的间隙能够使支 撑片的可弯折区实现双向弯折。
结合第一方面,在第二种可能的实现方式中,间隙为开设于支撑片的可弯折区上的凹槽。这样,有利于提高支撑片中与间隙的开口相对的主表面的平整程度,从而在保证可弯折区的弯折活动不受限制的前提下,进一步提高可弯折区的表面平整度。
结合第一方面的第二种可能的实现方式,在第三种可能的实现方式中,间隙包括底面和内侧壁面,底面与内侧壁面之间圆滑过渡。这样,可避免应力在内侧壁面与底面相交的角落位置处集中,有利于提高支撑片的使用寿命。
结合第一方面的第二种可能的实现方式,在第四种可能的实现方式中,间隙的深度与支撑片的厚度的比例的范围为77/80~97/100。这样的尺寸比例设计,有利于在保证可弯折区的弯折活动不受限制的前提下,进一步提高可弯折区的表面平整度。
结合第一方面,在第五种可能的实现方式中,间隙的截面形状为矩形,或梯形,或U形,或半圆形,或三角形,等等。截面形状为,沿垂直于间隙所在的可弯折区的长度延伸方向,且垂直于支撑片的主表面的方向,对间隙截断后所获得的截面形状。如此,提供了间隙的截面形状的几种可能的实现形式,当然间隙的截面形状并不仅限于此。
结合第一方面,在第六种可能的实现方式中,间隙的内侧壁面为平面,或阶梯面,或弧面,或曲面,或波浪面,等等。如此,提供了间隙的内侧壁面的形状的几种可能的实现形式,当然间隙的内侧壁面的形状并不仅限于此。
结合第一方面,在第七种可能的实现方式中,间隙的平面形状为条状,或孔状,或菱形状。间隙的平面形状为,间隙在支撑片的主表面上的正投影的形状。如此,提供了间隙的平面形状的几种可能的实现形式,当然间隙的平面形状并不仅限于此。
结合第一方面的第七种可能的实现方式,在第八种可能的实现方式中,可弯折区上设置有多个相互平行的条状的间隙,且每个间隙的长度延伸方向平行于可弯折区的长度延伸方向。这样,使得可弯折区中各个区域吸收的应力更加均匀,从而更好地支持终端设备的弯折活动。
结合第一方面的第七种可能的实现方式,在第九种可能的实现方式中,可弯折区上设置有多行间隙,每行间隙包括相互间隔布置的多个间隙,每行间隙所包括的多个间隙的排列方向平行于可弯折区的长度延伸方向。每个间隙为条状,这样有利于提高可弯折区的机械强度,并能较好地吸收弯折时所产生的应力。或者每个间隙为圆孔状或椭圆孔状,这样既有利于提高可弯折区的机械强度,又能够避免应力在间隙的内侧壁面的拐角处集中,提高支撑片的使用寿命。或者每行间隙包括至少一个条状的间隙和多个圆孔状或椭圆孔状的间隙,且每个条状的间隙两侧分别设置有至少一个圆孔状或椭圆孔状的间隙,这样有利于提高可弯折区的机械强度,并能较好地吸收弯折时所产生的应力,还可避免应力在条状的间隙的内侧壁面的拐角处集中,提高支撑片的使用寿命。或者每行间隙包括多个菱形状的间隙,这样既有利于提高可弯折区的机械强度,又能够进一步增大吸收弯折时所产生的应力的能力。
结合第一方面的第九种可能的实现方式,在第十种可能的实现方式中,沿垂直于可弯折区的长度延伸方向的方向,相邻两行间隙所包括的多个间隙相互错开设置。这样有利于避免支撑片弯折时应力比较集中,能够使支撑片各处的应力均匀,提高支撑片弯折时的可靠性。
结合第一方面,在第十一种可能的实现方式中,支撑片还包括至少一个不可弯折区,支撑片的可弯折区中非间隙区域的厚度小于或等于支撑片的不可弯折区的厚度。如此, 能够在提高可弯折区的机械强度的前提下,提高支撑片的弯折性能,使支撑片具有较大的弯折角度。
结合第一方面,在第十二种可能的实现方式中,在垂直于支撑片的主表面的方向上,支撑片的两侧分别为第一侧和第二侧,可弯折区能够朝向第一侧或第二侧弯折。可弯折区内所设置的多个间隙中,每个间隙贯通可弯折区的相对的两个主表面,或者每个间隙为开设于可弯折区上的凹槽,每个间隙的开口朝向第一侧或第二侧。如此,提供了几种实现可弯折区单向弯折的方式,当然实现可弯折区单向弯折的方式并不仅限于此。
结合第一方面,在第十三种可能的实现方式中,在垂直于支撑片的主表面的方向上,支撑片的两侧分别为第一侧和第二侧,可弯折区能够分别朝向第一侧和第二侧弯折。可弯折区内所设置的多个间隙中,每个间隙贯通可弯折区的相对的两个主表面,或者每个间隙为开设于可弯折区上的凹槽,其中一些间隙的开口朝向第一侧,另一些间隙的开口朝向第二侧,且开口朝向第一侧的间隙与开口朝向第二侧的间隙交替间隔布置。如此,提供了几种实现可弯折区双向弯折的方式,当然实现可弯折区双向弯折的方式并不仅限于此。
结合第一方面,在第十四种可能的实现方式中,支撑片的可弯折区上所设置的多个间隙为采用刻蚀工艺制备的多个间隙。或者,支撑片包括第一基材,及叠加在第一基材一侧表面上的第二基材,第二基材的与待形成间隙区域相对应的区域镂空,以与第一基材相配合形成支撑片的可弯折区上所设置的多个间隙。这样制备得到的支撑片各处的应力均匀,且表面平整度高。
结合第一方面,在第十五种可能的实现方式中,支撑片还包括至少一个不可弯折区,可弯折区的非间隙区域的厚度与不可弯折区的厚度相等。这样,有利于提高终端设备整个表面的平整度。
结合第一方面,在第十六种可能的实现方式中,支撑片为金属支撑片,以从材料方面提高支撑片的机械强度。
结合第一方面,在第十七种可能的实现方式中,支撑片的厚度大于0.05mm且小于或等于0.5mm,以有效保证支撑片的机械强度,使支撑片更好地支撑柔性显示屏。
第二方面,本申请提供一种终端设备,该终端设备包括柔性显示屏,及设置于柔性显示屏一侧的支撑片,该支撑片为如第一方面,及第一方面的第一~第十五种可能的实现方式中的任意一项所述的支撑片。上述终端设备被配置为可折叠式的终端设备,该终端设备所包括的支撑片的可弯折区内设置有多个间隙,在终端设备弯折时这些间隙能够吸收弯折时所产生的应力,从而使得支撑片不会对终端设备的弯折活动造成限制,并且支撑片能够支撑终端设备中的柔性显示屏,从而提高终端设备的表面平整度,进而提高终端设备的显示质量。
结合第二方面,在第一种可能的实现方式中,支撑片的间隙贯通支撑片的可弯折区的相对的两个主表面。这样,可以使缝隙具有较强地吸收应力的能力,从而在支撑片的可弯折区发生弯折时,更有效地保证可弯折区的弯折活动不受限制。并且,这样的间隙能够使支撑片的可弯折区实现双向弯折。
结合第二方面,在第二种可能的实现方式中,支撑片的间隙为开设于支撑片的可弯折区上的凹槽。这样,有利于提高支撑片中与间隙的开口相对的主表面的平整程度,从而在保证可弯折区的弯折活动不受限制的前提下,进一步提高可弯折区的表面平整度。
结合第二方面的第二种可能的实现方式,在第三种可能的实现方式中,支撑片的间 隙包括底面和内侧壁面,底面与内侧壁面之间圆滑过渡。这样,可避免应力在内侧壁面与底面相交的角落位置处集中,有利于提高支撑片的使用寿命。
结合第二方面的第二种可能的实现方式,在第四种可能的实现方式中,支撑片的间隙的深度与支撑片的厚度的比例的范围为77/80~97/100。这样的尺寸比例设计,有利于在保证可弯折区的弯折活动不受限制的前提下,进一步提高可弯折区的表面平整度。
结合第二方面,在第五种可能的实现方式中,支撑片的间隙的截面形状为矩形,或梯形,或U形,或半圆形,或三角形,等等。截面形状为,沿垂直于间隙所在的可弯折区的长度延伸方向,且垂直于支撑片的主表面的方向,对间隙截断后所获得的截面形状。如此,提供了间隙的截面形状的几种可能的实现形式,当然间隙的截面形状并不仅限于此。
结合第二方面,在第六种可能的实现方式中,支撑片的间隙的内侧壁面为平面,或阶梯面,或弧面,或曲面,或波浪面,等等。如此,提供了间隙的内侧壁面的形状的几种可能的实现形式,当然间隙的内侧壁面的形状并不仅限于此。
结合第二方面,在第七种可能的实现方式中,支撑片的间隙的平面形状为条状,或孔状,或菱形状。间隙的平面形状为,间隙在支撑片的主表面上的正投影的形状。如此,提供了间隙的平面形状的几种可能的实现形式,当然间隙的平面形状并不仅限于此。
结合第二方面的第七种可能的实现方式,在第八种可能的实现方式中,支撑片的可弯折区上设置有多个相互平行的条状的间隙,且每个间隙的长度延伸方向平行于可弯折区的长度延伸方向。这样,使得可弯折区中各个区域吸收的应力更加均匀,从而更好地支持终端设备的弯折活动。
结合第二方面的第七种可能的实现方式,在第九种可能的实现方式中,支撑片的可弯折区上设置有多行间隙,每行间隙包括相互间隔布置的多个间隙,每行间隙所包括的多个间隙的排列方向平行于可弯折区的长度延伸方向。每个间隙为条状,这样有利于提高可弯折区的机械强度,并能较好地吸收弯折时所产生的应力。或者每个间隙为圆孔状或椭圆孔状,这样既有利于提高可弯折区的机械强度,又能够避免应力在间隙的内侧壁面的拐角处集中,提高支撑片的使用寿命。或者每行间隙包括至少一个条状的间隙和多个圆孔状或椭圆孔状的间隙,且每个条状的间隙两侧分别设置有至少一个圆孔状或椭圆孔状的间隙,这样有利于提高可弯折区的机械强度,并能较好地吸收弯折时所产生的应力,还可避免应力在条状的间隙的内侧壁面的拐角处集中,提高支撑片的使用寿命。或者每行间隙包括多个菱形状的间隙,这样既有利于提高可弯折区的机械强度,又能够进一步增大吸收弯折时所产生的应力的能力。
结合第二方面的第九种可能的实现方式,在第十种可能的实现方式中,沿垂直于可弯折区的长度延伸方向的方向,相邻两行间隙所包括的多个间隙相互错开设置。这样有利于避免支撑片弯折时应力比较集中,能够使支撑片各处的应力均匀,提高支撑片弯折时的可靠性。
结合第二方面,在第十一种可能的实现方式中,支撑片还包括至少一个不可弯折区,支撑片的可弯折区中非间隙区域的厚度小于或等于支撑片的不可弯折区的厚度。如此,能够在满足可弯折区的机械强度的前提下,提高支撑片的弯折性能,使支撑片具有较大的弯折角度。
结合第二方面,在第十二种可能的实现方式中,在垂直于支撑片的主表面的方向上,支撑片的两侧分别为第一侧和第二侧,可弯折区能够朝向第一侧或第二侧弯折。可弯折 区内所设置的多个间隙中,每个间隙贯通可弯折区的相对的两个主表面,或者每个间隙为开设于可弯折区上的凹槽,每个间隙的开口朝向第一侧或第二侧。如此,提供了几种实现可弯折区单向弯折的方式,当然实现可弯折区单向弯折的方式并不仅限于此。
结合第二方面,在第十三种可能的实现方式中,在垂直于支撑片的主表面的方向上,支撑片的两侧分别为第一侧和第二侧,可弯折区能够分别朝向第一侧和第二侧弯折。可弯折区内所设置的多个间隙中,每个间隙贯通可弯折区的相对的两个主表面,或者每个间隙为开设于可弯折区上的凹槽,其中一些间隙的开口朝向第一侧,另一些间隙的开口朝向第二侧,且开口朝向第一侧的间隙与开口朝向第二侧的间隙交替间隔布置。如此,提供了几种实现可弯折区双向弯折的方式,当然实现可弯折区双向弯折的方式并不仅限于此。
结合第二方面,在第十四种可能的实现方式中,支撑片的可弯折区上所设置的多个间隙为采用刻蚀工艺制备的多个间隙。或者,支撑片包括第一基材,及叠加在第一基材一侧表面上的第二基材,第二基材的与待形成间隙区域相对应的区域镂空,以与第一基材相配合形成支撑片的可弯折区上所设置的多个间隙。这样制备得到的支撑片各处的应力均匀,且表面平整度高。
结合第二方面,在第十五种可能的实现方式中,支撑片还包括至少一个不可弯折区,可弯折区的非间隙区域的厚度与不可弯折区的厚度相等。这样,有利于提高终端设备整个表面的平整度。
结合第二方面,在第十六种可能的实现方式中,支撑片为金属支撑片,以从材料方面提高支撑片的机械强度。
结合第二方面,在第十七种可能的实现方式中,支撑片的厚度大于0.05mm且小于或等于0.5mm,以有效保证支撑片的机械强度,使支撑片更好地支撑柔性显示屏。
附图说明
图1为本申请的一些实施例中所提供的终端设备的系统架构图;
图2a~2c为相关技术中终端设备的三种截面结构图;
图2d和2e为两种具有不同的表面平整度的柔性显示屏的示意图;
图3a和3b为本申请的一些实施例中终端设备展开时两种不同视角下的立体结构示意图;
图3c和3d为图3a中终端设备弯折时两种不同视角下的立体结构示意图;
图4a~4d为本申请的一些实施例中支撑片的可弯折区弯折时的四种结构剖视图;
图5a~5l为本申请的一些实施例中支撑片的间隙的十二种截面形状的剖视图;
图6a~6e为本申请的一些实施例中支撑片的间隙的五种平面形状的示意图;
图7a~7c为本申请的一些实施例中支撑片的间隙的三种布置方式示意图;
图8a~8f为本申请的一些实施例中支撑片的六种弯折方式的示意图;
图9a~9c为本申请的一些实施例中终端设备为手机时的三种不同状态的示意图;
图9d为本申请的一些实施例中终端设备为平板电脑时的弯折状态的示意图;
图9e为本申请的一些实施例中终端设备为电纸书时的弯折状态的示意图;
图10为本申请的一些实施例中支撑片的截面结构图。
具体实施方式
下面结合附图,对本申请的一些实施例进行描述。
本申请的实施例提供一种支撑片及终端设备,其中所提供的终端设备可以为手机、可穿戴设备、AR(Augmented Reality,增强现实)\VR(Virtual Reality,虚拟现实)设备、平板电脑、笔记本电脑、UMPC(Ultra-mobile Personal Computer,超级移动个人计算机)、上网本、PDA(Personal Digital Assistant,个人数字助理)等任意终端,本申请的实施例对此不作任何限制。
如图1所示,在本申请的一些实施例中,所提供的终端设备可以为手机100。下面以手机100为例对终端设备的结构进行示例性说明。
如图1所示,手机100具体可以包括:处理器101、射频(Radio Frequency,简称RF)电路102、存储器103、触摸屏104、蓝牙装置105、一个或多个传感器106、Wi-Fi装置107、定位装置108、音频电路109、外设接口110以及电源装置111等部件。这些部件可通过一根或多根通信总线或信号线(图1中未示出)进行通信。本领域技术人员可以理解,图1中示出的硬件结构并不构成对手机100的限定,手机100可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置。
下面结合图1对手机100的各个部件进行具体的介绍:
处理器101是手机100的控制中心,利用各种接口和线路连接手机100的各个部分,通过运行或执行存储在存储器103内的应用程序(简称App),以及调用存储在存储器103内的数据,执行手机100的各种功能和处理数据。在一些实施例中,处理器101可包括一个或多个处理单元。举例来说,处理器101可以是华为技术有限公司制造的麒麟960芯片。
射频电路102可用于在收发信息或通话过程中,无线信号的接收和发送。特别地,射频电路102可以将基站的下行数据接收后,给处理器101处理。另外,将涉及上行的数据发送给基站。通常,射频电路包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器、双工器等。此外,射频电路102还可以通过无线通信和其他设备通信。所述无线通信可以使用任一通信标准或协议,包括但不限于全球移动通讯系统、通用分组无线服务、码分多址、宽带码分多址、长期演进、电子邮件、短消息服务等。
存储器103用于存储应用程序以及数据,处理器101通过运行存储在存储器103的应用程序以及数据,执行手机100的各种功能以及数据处理。存储器103主要包括存储程序区以及存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)。存储数据区可以存储根据使用手机100时所创建的数据(比如音频数据、电话本等)。此外,存储器103可以包括高速随机存取存储器,还可以包括非易失存储器,例如磁盘存储器件、闪存器件或其他易失性固态存储器件等。存储器103可以存储各种操作系统,例如,苹果公司所开发的iOS操作系统,谷歌公司所开发的Android操作系统等。
触摸屏104可以包括触控板104-1和显示屏104-2。其中,触控板104-1可采集手机100的用户在其上或附近的触摸事件(比如用户使用手指、触控笔等任何适合的物体在触控板104-1上或在触控板104-1附近的操作),并将采集到的触摸信息发送给其他器件 例如处理器101。
其中,用户在触控板104-1附近的触摸事件可以称之为悬浮触控。悬浮触控可以是指,用户无需为了选择、移动或拖动目标(例如图标等)而直接接触触控板,而只需用户位于终端附近以便执行所想要的功能。在悬浮触控的应用场景下,术语“触摸”、“接触”等不会暗示用于直接接触触摸屏,而是附近或接近的接触。
具体的,可以在触控板104-1内设置两种电容式传感器,即互电容传感器和自电容传感器,这两种电容传感器可以交替地阵列排布在触控板104-1上。其中,互电容传感器用于实现正常传统的多点触控,即检测用户接触触控板104-1时的手势。而自电容传感器能够产生比互电容更为强大的信号,从而检测到距离触控板104-1更远的手指感应。因此,当用户的手指在屏幕上悬停时,由于自电容传感器产生的信号要比互电容传感器产生的信号大,使得手机100可以检测到在屏幕上方,例如,距离触控板104-1上方20mm处用户的手势。
可选的,能够进行悬浮触控的触控板104-1可以采用电容式、红外光感以及超声波等实现。此外,可以采用电阻式、电容式、红外线以及表面声波等多种类型来实现触控板104-1。显示屏104-2可用于显示由用户输入的信息或提供给用户的信息以及手机100的各种菜单。可以采用液晶显示器、有机发光二极管等形式来配置显示屏104-2。触控板104-1可以覆盖在显示屏104-2之上,当触控板104-1检测到在其上或附近的触摸事件后,传送给处理器101以确定触摸事件的类型,随后处理器101可以根据触摸事件的类型在显示屏104-2上提供相应的视觉输出。
虽然在图1中,触控板104-1与显示屏104-2是作为两个独立的部件来实现手机100的输入和输出功能,但是在某些实施例中,可以将触控板104-1与显示屏104-2集成而实现手机100的输入和输出功能。
可以理解的是,触摸屏104是由多层的材料堆叠而成,本申请实施例中只展示出了触控板(层)和显示屏(层),其他层在本申请实施例中不予记载。另外,在本申请其他一些实施例中,触控板104-1可以覆盖在显示屏104-2之上,并且触控板104-1的尺寸大于显示屏104-2的尺寸,使得显示屏104-2全部覆盖在触控板104-1下面,或者,上述触控板104-1可以以全面板的形式配置在手机100的正面,也即用户在手机100正面的触摸均能被手机感知,这样就可以实现手机正面的全触控体验。在其他一些实施例中,触控板104-1以全面板的形式配置在手机100的正面,显示屏104-2也可以以全面板的形式配置在手机100的正面,这样在手机的正面就能够实现无边框的结构。
在本申请实施例中,手机100还可以具有指纹识别功能。例如,可以在手机100的背面(例如后置摄像头的下方)配置指纹采集器件112,或者在手机100的正面(例如触摸屏104的下方)配置指纹采集器件112。又例如,可以在触摸屏104中配置指纹采集器件112来实现指纹识别功能,即指纹采集器件112可以与触摸屏104集成在一起来实现手机100的指纹识别功能。在这种情况下,该指纹采集器件112配置在触摸屏104中,可以是触摸屏104的一部分,也可以以其他方式配置在触摸屏104中。另外,该指纹采集器件112还可以被实现为全面板指纹采集器件。因此,可以把触摸屏104看成是任何位置都可以进行指纹识别的一个面板。该指纹采集器件112可以将采集到的指纹发送给处理器101,以便处理器101对该指纹进行处理(例如指纹验证等)。本申请实施例中的指纹采集器件112的主要部件是指纹传感器,该指纹传感器可以采用任何类型的感测技术,包括但不限于光学式、电容式、压电式或超声波传感技术等。
手机100还可以包括蓝牙装置105,用于实现手机100与其他短距离的终端(例如手机、智能手表等)之间的数据交换。本申请实施例中的蓝牙装置105可以是集成电路或者蓝牙芯片等。
手机100还可以包括至少一种传感器106,比如光传感器、运动传感器以及其他传感器。具体地,光传感器可包括环境光传感器及接近传感器,其中,环境光传感器可根据环境光线的明暗来调节触摸屏104的显示屏的亮度,接近传感器可在手机100移动到耳边时,关闭显示屏的电源。作为运动传感器的一种,加速计传感器可检测各个方向上(一般为三轴)加速度的大小,静止时可检测出重力的大小及方向,可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等。至于手机100还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器,在此不再赘述。
Wi-Fi装置107,用于为手机100提供遵循Wi-Fi相关标准协议的网络接入,手机100可以通过Wi-Fi装置107接入到Wi-Fi接入点,进而帮助用户收发电子邮件、浏览网页和访问流媒体等,它为用户提供了无线的宽带互联网访问。在其他一些实施例中,该Wi-Fi装置107也可以作为Wi-Fi无线接入点,可以为其他终端提供Wi-Fi网络接入。
定位装置108,用于为手机100提供地理位置。可以理解的是,该定位装置108具体可以是全球定位系统(Global Positioning System,简称GPS)或北斗卫星导航系统、俄罗斯GLONASS(GLOBAL NAVIGATION SATELLITE SYSTEM,全球卫星导航系统)等定位系统的接收器。定位装置108在接收到上述定位系统发送的地理位置后,将该信息发送给处理器101进行处理,或者发送给存储器103进行保存。在另外的一些实施例中,该定位装置108还可以是辅助全球卫星定位系统(Assisted Global Positioning System,简称AGPS)的接收器,AGPS系统通过作为辅助服务器来协助定位装置108完成测距和定位服务,在这种情况下,辅助定位服务器通过无线通信网络与终端例如手机100的定位装置108(即GPS接收器)通信而提供定位协助。在另外的一些实施例中,该定位装置108也可以是基于Wi-Fi接入点的定位技术。由于每一个Wi-Fi接入点都有一个全球唯一的MAC地址,终端在开启Wi-Fi的情况下即可扫描并收集周围的Wi-Fi接入点的广播信号,因此可以获取到Wi-Fi接入点广播出来的MAC地址。终端将这些能够标示Wi-Fi接入点的数据(例如MAC地址)通过无线通信网络发送给位置服务器,由位置服务器检索出每一个Wi-Fi接入点的地理位置,并结合Wi-Fi广播信号的强弱程度,计算出该终端的地理位置并发送到该终端的定位装置108中。
音频电路109、扬声器113、麦克风114可提供用户与手机100之间的音频接口。音频电路109可将接收到的音频数据转换后的电信号,传输到扬声器113,由扬声器113转换为声音信号输出。另一方面,麦克风114将收集的声音信号转换为电信号,由音频电路109接收后转换为音频数据,再将音频数据输出至RF电路102以发送给比如另一手机,或者将音频数据输出至存储器103以便进一步处理。
外设接口110,用于为外部的输入/输出设备(例如键盘、鼠标、外接显示器、外部存储器、用户识别模块卡等)提供各种接口。例如通过通用串行总线(Universal Serial Bus,简称USB)接口与鼠标连接,通过用户识别模块卡卡槽上的金属触点与电信运营商提供的用户识别模块卡(Subscriber Identification Module,简称SIM卡)进行连接。外设接口110可以被用来将上述外部的输入/输出外围设备耦接到处理器101和存储器103。
手机100还可以包括给各个部件供电的电源装置111(比如电池和电源管理芯片), 电池可以通过电源管理芯片与处理器101逻辑相连,从而通过电源装置111实现管理充电、放电、以及功耗管理等功能。
尽管图1未示出,手机100还可以包括摄像头(前置摄像头和/或后置摄像头)、闪光灯、微型投影装置、近场通信(near field communication,简称NFC)装置等,在此不再赘述。
诸如上述手机100的终端设备,可以配置成可折叠的终端设备。该可折叠的终端设备包括柔性显示屏,具体到手机100中,也就是手机100所包括的触摸屏104为柔性显示屏。该柔性显示屏例如可以采用柔性OLED(Organic Light-Emitting Diode,有机发光二极管)显示屏、柔性液晶显示屏(Liquid Crystal Display,简称LCD)、或其他类型的柔性显示屏。
例如,请参阅图9a~9c,在本申请的一些实施例中,当终端设备200为手机时,手机包括可弯折区和不可弯折区,这样,当手机处于折叠状态时(如图9c所示),可以使手机占用的空间较小,从而便于手机的存放和携带。当手机处于展开状态时(如图9a或图9b所示),可以使手机具有较大的显示面积,从而便于用户对手机进行操作和阅读。
又例如,请参阅图9d,在本申请的另一些实施例中,终端设备200还可以是平板电脑,其中,当平板电脑处于弯折状态时,如果平板电脑朝向显示面侧弯折,可以使平板电脑的一部分水平放置,配置为显示键盘,从而形成办公操作区,另一部分倾斜放置,配置为显示图像或文字,从而形成办公显示区。这样,可以便于用户进行移动办公操作或游戏操作。
又例如,请参阅图9e,在本申请的另一些实施例中,终端设备200还可以是电纸书,这时,通过使电纸书弯折,可以使该电纸书呈现更好的模仿书籍的折页效果。
请再次参见图2a和图2b,正如背景技术所述,由于可折叠式的终端设备的柔性显示屏比较柔软,表面平整度较差,因此通过在柔性显示屏1的背面(即柔性显示屏1的与显示面相对的一面)贴合支撑片2来支撑柔性显示屏1,以改善终端设备的表面平整度。然而,支撑片2过厚会限制终端设备的弯折活动,过薄又无法有效改善终端设备的表面平整度。
如图2c所示,在一些相关技术中,在终端设备的不可弯折区设置厚度较厚的支撑片2,在终端设备的可弯折区设置厚度较薄的支撑片或不设置支撑片(图2c示出了可弯折区不设置支撑片的情况),这样,可以有效改善终端设备的不可弯折区的平整度,同时不会对终端设备的可弯折区的弯折活动造成限制。但是,由于终端设备的可弯折区所设置的支撑片厚度较薄,甚至不设置支撑片,造成终端设备的可弯折区的表面平整度无法得到有效改善,仍然会存在诸如波浪形纹路的问题。
需要说明的是,所述的终端设备的可弯折区的表面平整度是指,终端设备的可弯折区在未弯折时的表面平整程度,及可弯折区在弯折时表面的圆滑程度。其中,圆滑是指,可弯折区在弯折时表面无波浪形纹路或凹凸不平等问题,或者此类问题很少。可弯折区在弯折时的表面波浪形纹路或凹凸不平等问题越少,则可弯折区在弯折时表面的圆滑程度越高,可弯折区在弯折时的表面平整度越高。示例性的,如图2d所示,终端设备的可弯折区在弯折时的表面无波浪形纹路,则可弯折区在弯折时表面的圆滑程度较高,表面平整度较高。如图2e所示,终端设备的可弯折区在弯折时的表面有较多波浪形纹路,则可弯折区在弯折时表面的圆滑程度较低,表面平整度较差。
基于上述现状,如图3a~3d所示,本申请实施例提供一种支撑片2及终端设备200, 支撑片2设置在终端设备200所包括的柔性显示屏1的一侧。该支撑片2包括可弯折区,在支撑片2的可弯折区设置多个间隙3,并使间隙3的开口的朝向与可弯折区的弯折方向相同。这样,当支撑片2的可弯折区弯折时,间隙3能够吸收弯折时所产生的应力,不会对终端设备200的弯折活动造成限制。并且,支撑片2的可弯折区中除间隙3所在的区域以外的区域(即非间隙区域4)可以增强支撑片2的可弯折区的机械强度,从而较好地支撑柔性显示屏1的对应支撑片2的可弯折区的部分。进一步的,若支撑片2还具有不可弯折区,则支撑片2的不可弯折区能够为柔性显示屏1相应的区域提供支撑作用,提高终端设备200的不可弯折区的表面平整度。从而实现了在不对终端设备200的弯折活动造成限制的前提下,提高终端设备200整个表面的平整度。
示例性的,请参阅图9a~9c,在本申请的一些实施例中,当终端设备200为手机时,通过在其柔性显示屏的一侧设置本申请实施例提供的支撑片,不仅可以使手机实现可弯折,还能够在当手机处于完全展开状态(如图9a所示)、或处于半展开状态(如图9b所示)时,使手机的可弯折区和不可弯折区均具有较高的平整度,从而避免影响手机的图像显示和用户对手机的操作。
示例性的,请参阅图9d,在本申请的一些实施例中,当终端设备200为平板电脑时,通过在其柔性显示屏的一侧设置本申请实施例提供的支撑片,可以在其实现可弯折的同时,使平板电脑的可弯折区和不可弯折区具有较高的平整度。例如,当平板电脑用于移动办公时,可以使平板电脑的办公操作区和办公显示区具有较高的平整度,从而给用户带来较好的办公体验。
示例性的,请参阅图9e,在本申请的一些实施例中,当终端设备200为电纸书时,可以使电纸书的不可弯折区作为文字显示区,同过在其柔性显示屏的一侧设置本申请实施例提供的支撑片,可以在保证电纸书具有较高的仿书籍效果的同时,使电子书的文字显示区具有较高的平整度,从而可以避免由于文字显示区发生弯曲而导致所显示的文字发生变形,有助于提高用户的阅读体验。
基于上述基本申请思想,下面结合附图对本申请中的实施例进行详细介绍。
请再次参见图3a~3d,本申请实施例提供一种支撑片2及终端设备200,该终端设备200包括柔性显示屏1,支撑片2设置在柔性显示屏1一侧。支撑片2包括至少一个可弯折区,每个可弯折区内设置有多个间隙3,每个间隙3具有至少一个开口,且每个间隙3至少有一个开口的朝向与该间隙3所在的可弯折区的弯折方向相同,以便于在支撑片2朝向该弯折方向弯折时,支撑片2中的间隙3能够吸收弯折所产生的应力。
请参阅3a和3b,当支撑片2处于非弯折状态时,由于支撑片2的可弯折区中包括间隙3和非间隙区域4,支撑片2的非间隙区域4具有一定的厚度(该厚度可以与支撑片2的不可弯折区的厚度相等),这样,可以利用支撑片2的非间隙区域4来提高终端设备200的可弯折区的表面平整度。同时,支撑片2的不可弯折区具有一定的厚度,能够支撑柔性显示屏1的相应区域,提高终端设备200的可弯折区的表面平整度。
请参阅图3c和3d,当支撑片2处于弯折状态时,在支撑片2的可弯折区中,不仅可以利用非间隙区域4来提高终端设备200的可弯折区的表面平整度,而且,由于支撑片2的可弯折区中包括间隙3,间隙3可以吸收可弯折区在弯折时所产生的应力,从而不会对终端设备200的可弯折区的弯折活动造成限制。同时,支撑片2的不可弯折区具有一定的厚度,能够支撑柔性显示屏1的相应区域,提高终端设备200的可弯折区的表面平整度。
在一些实施例中,柔性显示屏1为单面显示的屏幕,包括显示面和与显示面相对的背面,图3a~3d所述,在本申请的一些实施例中,支撑片2设置于柔性显示屏1的背面侧,以较好地支撑柔性显示屏1,并且避免对柔性显示屏1所显示的画面造成遮挡。作为一种可能的设计,柔性显示屏1与支撑片2之间可通过粘贴、键合、焊接等方式固定连接。
如图4a~4d所示,假设在垂直于终端设备200的显示面的方向上,终端设备200的两侧分别为A侧和B侧(等同于,在垂直于支撑片2的主表面的方向上,支撑片2的两侧分别为第一侧和第二侧),支撑片2的可弯折区的弯折方向是指,垂直于终端设备的显示面且朝向终端设备的A侧的方向D 1,或者,垂直于终端设备的显示面且朝向终端设备的B侧的方向D 2。示例性的,终端设备200为单面显示的终端设备,终端设备200的A侧为显示面侧,B侧为背面侧,支撑片2的可弯折区的弯折方向D 1为朝向显示面侧弯折的方向,支撑片2的可弯折区的弯折方向D 2为朝向背面侧的方向(即背向显示面侧的方向)。
对于支撑片2的任一可弯折区而言,在一些实施例中,如图4a和4b所示,该可弯折区具有一个弯折方向D 1或D 2,即该可弯折区可单向弯折。在另一些实施例中,如图4c和4d所示,该可弯折区具有两个弯折方向D 1和D 2,即该可弯折区可双向弯折。
请继续参见图4a~4d,本申请实施例中所述的每个间隙3具有至少一个开口,可以理解为,间隙3具有一个开口或两个开口。
如图4a~4c所示,间隙3具有一个开口,该开口朝向终端设备200的A侧或B侧,即该开口朝向可弯折区的弯折方向D 1或D 2,换言之就是,间隙3为开设于支撑片2的可弯折区上的凹槽,间隙3未贯通支撑片2的相对的两个主表面a 1和a 2,这种情况下,间隙3的深度d小于支撑片的厚度。
需要说明的是,本申请实施例中所述的间隙3的深度d是指,间隙3在沿垂直于终端设备200的显示面的方向上的尺寸。间隙3的深度d可根据可弯折区的弯曲弧度来设计。若可弯折区的弯曲弧度较大,说明可弯折区弯折时所产生的应力较大,则可将间隙3的深度d设计的较大,以便于吸收更多的应力。若可弯折区的弯曲弧度较小,说明可弯折区弯折时所产生的应力较小,则可将间隙3的深度d设计的较小。可选的,间隙3的深度d与支撑片2的厚度的比例的范围为77/80~97/100。例如,支撑片2的厚度为0.08mm,间隙3的深度d为0.077mm。又例如,支撑片2的厚度为0.10mm,间隙3的深度d为0.097mm。
另外,本申请实施例中所述的支撑片2的相对的两个主表面a 1和a 2分别是指,支撑片2的与柔性显示屏1相接触的表面,及支撑片2中与前述表面相对的表面,两个主表面a 1和a 2的位置可互换。
这样设计,间隙3能够吸收可弯折区弯折时所产生的应力,有效地保证了可弯折区的弯折活动不受限制。并且,可弯折区中的非间隙区域4(即除间隙3所在的区域以外的区域)的具有一定的厚度,这有利于提高可弯折区的机械强度。同时,支撑片2中未被间隙3贯通的主表面(即与间隙3的开口所在的主表面相对的一侧主表面)为连续的表面,间隙3的底面c与支撑片2的未被间隙3贯通的主表面之间有一定厚度的支撑片材料存在,这有利于进一步提高可弯折区的机械强度。从而在不对终端设备200的弯折活动造成限制的前提下,较好地支撑柔性显示屏1的对应支撑片2的可弯折区的部分,提高了终端设备200的可弯折区的表面平整度,也就提高了终端设备200整个表面的平 整度。
基于间隙3具有一个开口的设计,示例性的,如图4a所示,当可弯折区中所设置的各个间隙3的开口朝向终端设备200的A侧,则支撑片2的可弯折区可进行单向弯折,弯折方向为D 1。如图4b所示,当可弯折区中所设置的各个间隙3的开口朝向终端设备200的B侧,则支撑片2的可弯折区可进行单向弯折,弯折方向为D 2。如图4c所示,当可弯折区中所设置的多个间隙3中,一部分间隙3的开口朝向终端设备200的A侧,另一部分间隙3的开口朝向终端设备200的B侧,且两部分间隙3交替间隔布置,则支撑片2的可弯折区可实现双向弯折,弯折方向为D 1和D 2。可选的,当上述两部分间隙3交替间隔布置时,任意相邻两个间隙3之间的间隔相等,这样,有利于使可弯折区各个部位吸收应力的能力一致,使得可弯折区在弯折时各个部位的应力均匀。
如图4d所示,间隙3具有两个开口,该两个开口中的一个朝向终端设备200的A侧,即朝向弯折方向D 1,另一个朝向终端设备200的B侧,即朝向弯折方向D 2,换言之就是,间隙3贯通支撑片2的相对的两个主表面a 1和a 2,这种情况下,间隙3的深度d等于支撑片2的厚度。
这样设计,由于间隙3贯通支撑片2的相对的两个主表面a 1和a 2,因此间隙3吸收可弯折区弯折时所产生的应力的能力更强,能够更有效地保证可弯折区的弯折活动不受限制。并且,可弯折区中的非间隙区域4具有一定的厚度,这有利于提高可弯折区的机械强度。从而在不对终端设备200的弯折活动造成限制的前提下,较好地支撑柔性显示屏1的对应支撑片2的可弯折区的部分,提高了终端设备200的可弯折区的表面平整度,也就提高了终端设备200整个表面的平整度。
另外,支撑片2的可弯折区设置这种具有两个开口的间隙3,使得支撑片2的可弯折区可实现双向弯折,弯折方向为D 1和D 2
对于单一的间隙3而言,请参阅图5a~5k,间隙3的截面形状不限于矩形,或梯形,或U形,或半圆形,或三角形,或不规则形状等形状。需要说明的是,本申请实施例中所述的间隙3的截面形状是指,沿垂直于可弯折区的长度延伸方向且垂直于终端设备的显示面的方向(等同于,沿垂直于可弯折区的长度延伸方向且垂直于支撑片2的主表面a 1或a 2的方向)对间隙3截断后所获得的截面形状,示例性的,如图3a所示,间隙3的截面形状为沿截面线AA'对间隙3截断后所获得的截面形状。其中,可弯折区的长度延伸方向是指,与可弯折区的弯折轴线OO'平行的方向,可弯折区的长度延伸方向可以是平行于终端设备200的显示面的平面内的任意方向,例如,可弯折区的长度延伸方向平行于画面显示的水平方向,或者平行于画面显示的竖直方向,或者与画面显示的水平方向呈锐角。
请继续参见图5a~5k,作为一种可能的设计,间隙的内侧壁面b可为平面,或阶梯面,或弧面,或曲面,或波浪面等。需要说明的是,本申请实施例中所述的间隙3的内侧壁面b是指,间隙3中与支撑片2的侧面(即支撑片2中除两个主表面a 1和a 2外的面)相对的面。
示例性的,如图5a所示,间隙3的深度d等于支撑片2的厚度,即间隙3贯通支撑片2的相对的两个主表面a 1和a 2,间隙3的截面形状为矩形,间隙3的内侧壁面b为平面。这样,间隙3具有两个开口,其中一个开口位于支撑片2的主表面a 1上,另外一个开口位于支撑片2的主表面a 2上,且两个开口的宽度w相等。由于间隙3贯通支撑片2的相对的两个主表面a 1和a 2,因此弯折时间隙3能够吸收更多的应力。并且,由于支撑 片2的两个主表面a 1和a 2上均有间隙3的开口,因此使得间隙3所在的可弯折区能够实现双向弯折。进一步的,由于间隙3的两个开口的宽度w相等,因此能够实现使间隙3所在的可弯折区双向弯折的弯曲弧度相等。
需要说明的是,本申请实施例中所述的间隙3的开口的宽度w是指,间隙3的沿垂直于可弯折区的长度延伸方向的尺寸。间隙3的开口的宽度w可根据可弯折区的弯曲弧度来设计。若可弯折区的弯曲弧度较大,说明可弯折区弯折时所产生的应力较大,则可将间隙3的开口的宽度w设计的较大,以便于吸收更多的应力。若可弯折区的弯曲弧度较小,说明可弯折区弯折时所产生的应力较小,则可将间隙3的开口的宽度w设计的较小。
示例性的,如图5b所示,间隙3的深度等于支撑片2的厚度,即间隙3贯通支撑片2的相对的两个主表面a 1和a 2,间隙3的截面形状为梯形,间隙3的内侧壁面b为平面。这样,间隙3具有两个开口,其中一个开口位于支撑片2的主表面a 1上,另外一个开口位于支撑片2的主表面a 2上,且其中一个开口的宽度w 1大于另外一个开口的宽度w 2。由于间隙3贯通支撑片2的相对的两个主表面a 1和a 2,因此弯折时间隙3能够吸收更多的应力。并且,由于支撑片2的两个主表面a 1和a 2上均有间隙3的开口,因此使得间隙3所在的可弯折区能够实现双向弯折。间隙3的两个开口的宽度不相等,因此能够实现间隙3所在的可弯折区双向弯折的弯曲弧度不相等。
示例性的,如图5c所示,间隙3的深度等于支撑片2的厚度,即间隙3贯通支撑片2的相对的两个主表面a 1和a 2,间隙3的截面形状为两个宽度(即矩形沿平行于支撑片2的主表面的方向上的尺寸)不同的矩形叠加后所呈的形状,间隙3的内侧壁面为台阶面。这样,间隙3具有两个开口,其中一个开口位于支撑片2的主表面a 1上,另外一个开口位于支撑片2的主表面a 2上,且其中一个开口的宽度w 1大于另外一个开口的宽度w 2。由于间隙3贯通支撑片2的相对的两个主表面a 1和a 2,因此弯折时间隙3能够吸收更多的应力。并且,由于支撑片2的两个主表面a 1和a 2上均有间隙3的开口,因此使得间隙3所在的可弯折区能够实现双向弯折。间隙3的两个开口的宽度不相等,因此能够实现间隙3所在的可弯折区双向弯折的弯曲弧度不相等。
如图5b和5c所示出的设计适用于可弯折区双向弯折的弯曲弧度不同的终端设备200。例如,若可弯折区的两个弯折方向D 1和D 2的弯折弧度分别为α和β,α﹥β,这说明可弯折区朝向弯折方向D 1弯折所产生的应力会大于朝向弯折方向D 2弯折所产生的应力,则可使间隙3的朝向弯折方向D 1的开口的宽度大于朝向弯折方向D 2的开口的宽度,以便于朝向弯折方向D 1的开口吸收更多的应力。
作为一些可能的设计,若间隙3的内侧壁面b为台阶面,则在垂直于支撑片2的主表面的方向上,间隙3的内侧壁面b不限于仅包括一个台阶(图5c示出了侧壁面b包括一个台阶),间隙3的内侧壁面b还可以包括两个或两个以上的台阶。也就是说,间隙3的截面形状不限于为两个宽度不同的矩形叠加后所呈的形状,还可以为两个或两个以上矩形在沿垂直于支撑片2的主表面的方向上依次叠加后所呈的形状,其中所述两个或两个以上矩形的宽度在沿垂直于支撑片2的主表面的方向上依次增大或减小。
在本申请的实施例中,当间隙3的深度等于支撑片2的厚度时,间隙3的侧壁面b还可以设置成其他的结构。请参阅图5d,在本申请的一些实施例中,间隙3的侧壁面b为弧形。请参阅图5e,在本申请的另一些实施例中,间隙3的侧壁面b为波浪形。
示例性的,如图5f所示,间隙3的深度d小于支撑片2的厚度,即间隙3未贯通支 撑片2的相对的两个主表面a 1和a 2,间隙3的截面形状为矩形,间隙3的内侧壁面b为平面。这样,间隙3具有一个开口,该开口位于支撑片2的某一主表面上。由于支撑片2中未被间隙3贯通的主表面为连续的表面,因此能够进一步提高支撑片2的可弯折区的机械强度,从而进一步提高终端设备200的可弯折区的表面平整度。
示例性的,如图5g所示,间隙3的深度d小于支撑片2的厚度,即间隙3未贯通支撑片2的相对的两个主表面a 1和a 2,间隙3的截面形状为梯形,间隙3的内侧壁面b为平面。这样,间隙3具有一个开口,该开口位于支撑片2的某一主表面上。由于间隙3的内侧壁面与间隙3的底面所呈的角度为钝角,即在沿垂直于支撑片2的主表面且由间隙3的开口所在的主表面指向间隙3的底面的方向上,开口的宽度逐渐减小,因此间隙3能够吸收更多可弯折区弯折时所产生的应力。
在本申请的实施例中,当间隙3的深度小于支撑片2的厚度时,间隙3的侧壁面b还可以设置成其他的结构。请参阅图5h,在本申请的一些实施例中,间隙3的侧壁面b为阶梯状。请参阅图5i,在本申请的另一些实施例中,间隙3的侧壁面b为弧形。请参阅图5j,在本申请的再一些实施例中,间隙3的侧壁面b是波浪形。
作为一种可能的设计,请参见图5k,间隙3的内侧壁面b与底面c之间圆滑过渡,可选的,间隙3的内侧壁面b与底面c的相交位置处e设计为圆角,从而可避免应力在内侧壁面b与底面c相交的角落位置处集中,以减少由此对支撑片2的疲劳强度带来的损耗,有利于提高支撑片2的使用寿命。
对于单一的间隙3而言,请参阅图6a~6e,及图7a~7c,间隙3的平面形状不限于条状,或孔状,或菱形状,或不规则形状等形状。需要说明的是,本申请实施例中所述的间隙3的平面形状是指,间隙3在终端设备的显示面上的正投影(等同于,在支撑片2的主表面a 1或a 2上的正投影)的形状。间隙3的平面形状可以理解为间隙3的开口的形状。
示例性的,请参阅图6a和6b,在一些实施例中,间隙3的平面形状为条状,具体可以是直线形的条状,或者波浪线形的条状等条状。作为一种可能的设计,当间隙3的平面形状为条状时,则间隙3的长度延伸方向与间隙3所在的可弯折区的长度延伸方向L一致。另外,当间隙3的平面形状为条状时,在沿间隙3的长度延伸方向L上,间隙3的宽度w可以保持恒定或者有变化。需要说明的是,若间隙3的宽度w在沿间隙3的长度延伸方向上有变化,则间隙3的宽度w指的是其平均宽度。
请参阅图6c和6d,在另一些实施例中,间隙3的平面形状为孔状,例如可以是圆孔状、椭圆孔状或者方孔状等。特别的,当间隙3的平面形状为圆孔状或椭圆孔状时,间隙3的内侧壁面不存在拐角或者尖角,也就避免了应力在拐角或尖角位置处集中,从而使得间隙3所受的应力更加均匀,有利于提高支撑片2的使用寿命。
请参阅图6e,在本申请的一些实施例中,支撑片2的可弯折区中所设置的多个间隙3包括多个平面形状为条状的间隙3和多个平面形状为圆孔状或椭圆孔状的间隙3,且可弯折区中所设置的多个间隙3排列成多行。每行间隙3包括至少一个条状的间隙和多个圆孔状或椭圆孔状的间隙,且每个条状的间隙两侧分别设置有至少一个圆孔状或椭圆孔状的间隙。这样,可以在保证可弯折区中所设置的多个间隙3能够较大程度地吸收应力的同时,减少应力在条状的间隙3的内侧壁面的拐角或尖角处集中,从而避免可弯折区在多次弯折后从条状的间隙3处断裂,提高支撑片2的使用寿命。
对于支撑片2中单一可弯折区而言,请参阅图7a~7c,可弯折区上所设置的多条间隙 3的布置图案可根据实际需要任意设置。
示例性的,如图7a所示,可弯折区上设置有多个相互平行的条状的间隙3,每个间隙3的长度延伸方向平行于可弯折区的长度延伸方向。可选的,每个间隙3的深度小于支撑片2的厚度,即每个间隙3为开设于支撑片2的可弯折区上的凹槽。进一步的,多个间隙3中每相邻两个间隙3之间的间隙相等,这样使得可弯折区中各个区域吸收的应力更加均匀,从而更好地支持终端设备200的弯折活动。
示例性的,如图7b所示,可弯折区上设置有相互平行的多行间隙3,每行包括相互间隔布置的多个条状的间隙3。可选的,每个间隙3的深度等于支撑片2的厚度,即每个间隙3贯通支撑片2的可弯折区的相对的两个主表面a 1和a 2。进一步的,沿垂直于可弯折区的长度延伸方向的方向L',相邻两行间隙3所包括的多个间隙3相互错开布置,这样有利于提高可弯折区的机械强度,从而更好地支撑柔性显示屏1中对应支撑片2的可弯折区的部分,提高终端设备200的表面平整度。
示例性的,如图7c所示,可弯折区上设置有相互平行的多行间隙3,每行间隙3包括相互间隔布置的多个菱形状的间隙3,每行所包括的多个菱形状的间隙3的排列方向平行于可弯折区的长度延伸方向。可选的,每个菱形状的间隙3的深度等于支撑片2的厚度,即每个间隙3贯通支撑片2的可弯折区的相对的两个主表面a 1和a 2。进一步的,沿垂直于可弯折区的长度延伸方向的方向L',相邻两行菱形状的间隙3所包括的多个菱形状的间隙3相互错开布置,这样有利于提高可弯折区的机械强度,从而更好地支撑柔性显示屏1中对应支撑片2的可弯折区的部分,提高终端设备200的表面平整度。
本申请实施例中,菱形状的间隙3可以是标准的菱形形状。菱形状的间隙3也可以类似标准菱形的形状,例如,请再次参见图7c,在标准菱形的两端尖角处设置圆弧形过渡曲面的类似标准菱形的形状,这样可以避免应力在菱形状间隙3的两端尖角位置处积累,从而避免支撑片2的可弯折区在多次弯折后断裂,提高支撑片2的使用寿命。
另外,每行间隙3中,除包括完整的菱形状的间隙3外,还可以包括部分菱形状的间隙3,例如,请再次参见图7c,每行间隙3中包括菱形状的间隙3的一半。这样有利于在可弯折区布置更多的间隙3,从而进一步提高支撑片2的弯折性能。
示例性的,请再次参见图6e,可弯折区上设置有相互平行的多行间隙3,每行包括相互间隔布置的多个间隙3,每行所包括的多个间隙3的排列方向平行于可弯折区的长度延伸方向。每行包括至少一个条状的间隙3和多个圆孔状或椭圆孔状的间隙3,且每个条状的间隙两侧分别设置有至少一个孔状的间隙。进一步的,每行所包括的多个间隙3中,条状的间隙3和圆孔状或椭圆孔状的间隙3交替间隔布置,且每行的最外侧两端为圆孔状或椭圆孔状的间隙3。这样的布置形式可以在保证可弯折区中所设置的多个间隙3能够较大程度地吸收应力的同时,减少应力在条状的间隙3的内侧壁面的拐角或尖角处集中,从而避免可弯折区在多次弯折后从条状的间隙3处断裂,提高支撑片2的使用寿命。
需要说明的是,支撑片2的可弯折区中多个间隙3的布置密度可根据实际需要进行设计。若可弯折区的弯曲弧度较大,说明可弯折区弯折时所产生的应力较大,则可将多个间隙3的布置密度设计的较大,以便于吸收更多的应力。若可弯折区的弯曲弧度较小,说明可弯折区弯折时所产生的应力较小,则可将多个间隙3的布置密度设计的较小。
在一些实施例中,如图5a和图5l所示,支撑片2还包括至少一个不可弯折区,支撑片2的可弯折区中非间隙区域4的厚度h 1小于或等于支撑片2的不可弯折区的厚度h 2。 这样设计,使柔性显示屏1中对应支撑片2的不可弯折区的部分能够得到很好的支撑,有利于提高柔性显示屏1的平整度。而且能够在提高支撑片2的可弯折区的机械强度的前提下,提高支撑片的弯折性能,进而使支撑片2具有较大的弯折角度。
示例性的,如图5a所示,支撑片2的可弯折区中非间隙区域4的厚度h 1等于支撑片2的不可弯折区的厚度h 2。这样使提高支撑片2的可弯折区21的机械强度比较高。
示例性的,如图5l所示,支撑片2的可弯折区中非间隙区域4的厚度h 1小于支撑片2的不可弯折区的厚度h 2。这样能够在提高可弯折区的机械强度的前提下,提高支撑片的弯折性能,使支撑片2具有较大的弯折角度。需要说明的是,通过诸如干法刻蚀、湿法刻蚀、激光刻蚀等方式,可以减薄可弯折区中非间隙区域4的厚度h 1
在本申请实施例提供的终端设备200中,通过在支撑片2的可弯折区设置多个间隙3来吸收终端设备200弯折时产生的应力,这样,即使支撑片的厚度设置的较大,也能够保证终端设备200的弯折活动不受限制。因此,可在不对终端设备200的弯折活动造成限制的前提下,适当提高支撑片2的厚度,以进一步增强支撑片2的机械强度,从而使支撑片能够更好地改善终端设备200的表面平整度。可选的,支撑片的厚度大于0.05mm。进一步的,支撑片2的厚度大于0.05mm且小于或等于0.5mm。
在本申请的实施例中,支撑片2中间隙3的加工方式可以有多种。在一些实施例中,可以采用去除支撑片2上待形成间隙3的部位的材料的方式来制备间隙3,例如,可采用激光刻蚀成型、等离子体刻蚀成型、湿法刻蚀成型等工艺制备间隙3,通过这种方式制备得到的支撑片2各处的应力均匀,且表面平整度高。
请参见图10,在另一些实施例中,支撑片2可以采用多层基材叠加的方式来制备。示例性的,先提供第一基材21,然后在第一基材21的一侧表面上叠加第二基材22。该第二基材22包括镂空区域f 1和非镂空区域f 2,其中,镂空区域f 1对应支撑片2中待形成间隙3的区域,非镂空区域f 2对应支撑片2中的非间隙区域4。第二基材22在支撑片2的待形成间隙3的区域镂空,使得支撑片2中待形成间隙3的区域的厚度为第一基材21的厚度,第二基材22在支撑片2的非间隙区域4不镂空,使得支撑片2中非间隙区域4的厚度达到待形成的支撑片2的厚度,从而形成具有所需要的间隙3的支撑片2。通过这种方式制备的支撑片2所具有的间隙3为具有一个开口的间隙3,即为未贯通支撑片2的两个主表面的间隙3。并且,通过这种方式制备得到的支撑片2各处的应力均匀,且表面平整度高。其中,第一基材21与第二基材22之间可以以粘接、扩散成型等方式相互连接。
此外,在另一些实施例中,间隙3还可以通过其他加工方式制备,例如,可以通过辊压成型、机械切割成型等方式制备,此处不再一一详述。
在本申请的实施例中,支撑片2的材料可以选用任何具有一定机械强度的材料。可选的,支撑片的材料采用机械强度高、表面平整度好、且可弯折性能强的材料,例如,支撑片2为金属支撑片。进一步的,支撑片2为不锈钢支撑片或铜支撑片。
请参见图3a~3d,在本申请的一些实施例中,支撑片2除包括至少一个可弯折区外,还可包括至少一个不可弯折区,不可弯折区与可弯折区相连。不可弯折区的厚度与可弯折区中非间隙区域4的厚度相等,这样柔性显示屏1中对应支撑片2的不可弯折区的部分也能够得到很好的支撑,从而提高了终端设备200整个显示面的平整度。
在本申请的实施例中,终端设备200的弯折形式可以有多种,支撑片2中间隙的设计要满足相应的弯折形式的需求。请参阅图8a~8f,下面介绍几种弯折形式,及相应的支 撑片2中间隙的可能设计。
示例性的,请参阅图8a,终端设备200的支撑片2具有一个可弯折区,该可弯折区能够朝向弯折方向D 1或D 2弯折(图8a可弯折区的弯折方向为D 1的情况)。这种情况下,为了保证终端设备200的弯折活动不受限制,支撑片的可弯折区的多个间隙3间隔设置,每个间隙3可采用未贯通支撑片2的两个主表面a 1和a 2的结构,每个间隙3的开口朝向终端设备200的弯折方向。
示例性的,请参阅图8b,终端设备200的支撑片2具有一个可弯折区,该可弯折区能够朝向弯折方向D 1和D 2弯折。这种情况下,为了保证终端设备200的弯折活动不受限制,支撑片2的可弯折区的多个间隙3间隔设置,每个间隙3可采用贯通支撑片的两个主表面a 1和a 2的结构,每个间隙3的两个开口分别朝向终端设备200的两个弯折方向。
示例性的,请参阅图8c,终端设备200的支撑片2具有两个可弯折区,其中一个可弯折区能够朝向弯折方向D 1弯折(如图8c中的第二可弯折区),另外一个可弯折区能够朝向D 2弯折(如图8c中第一可弯折区)。这种情况下,为了保证终端设备200的弯折活动不受限制,支撑片2中能够朝向弯折方向D 1弯折的可弯折区中,每个间隙3可采用未贯通支撑片2的两个主表面a 1和a 2的结构,且每个间隙3的开口朝向弯折方向D 1。并且,支撑片2中能够朝向弯折方向D 2弯折的可弯折区中,每个间隙3可采用未贯通支撑片2的两个主表面a 1和a 2的结构,且每个间隙3的开口朝向弯折方向D 2
示例性的,请参阅图8d,终端设备200的支撑片2具有两个可弯折区,其中一个可弯折区的弯曲弧度大于另外一个可弯折区的弯曲弧度,这样使得终端设备200实现折叠式弯折。这种情况下,通过对可弯折区的面积、可弯折区内间隙3的数量、可弯折区内间隙3的布置密度、间隙3的开口的朝向、间隙3的深度、间隙3的宽度等参数的设计,可使得其中一个可弯折区的弯曲弧度大于另外一个可弯折区的弯曲弧度。
示例性的,请参阅图8e,终端设备200的支撑片2全部或者大部分为可弯折区,终端设备200能够实现卷动式弯折,终端设备200进行卷动式弯折可形成状似卷轴的形状,从支撑片2的处于卷轴中心的一端至处于卷轴最外侧的一端,支撑片2的可弯折区的弯曲弧度逐渐减小。这种情况下,通过对可弯折区内间隙3的数量、可弯折区内间隙3的布置密度、间隙3的开口的朝向、间隙3的深度、间隙3的宽度等参数的设计,可使得支撑片2的可弯折区的弯曲弧度由卷轴中心至卷轴最外侧逐渐减小。
示例性的,请参阅图8f,终端设备200的支撑片2全部或者大部分为可弯折区,终端设备200能够实现滑动式弯折,终端设备200的进行滑动式弯折时类似链条在轮盘上的运动,支撑片的可弯折区的各个部分均能够进行相同弯曲弧度的弯折。这种情况下,通过对可弯折区内间隙3的数量、可弯折区内间隙3的布置密度、间隙3的开口的朝向、间隙3的深度、间隙3的宽度等参数的设计,可使得支撑片2的可弯折区的各个部分的弯曲弧度相同。
需要说明的是,在本申请的实施例中,终端设备200的弯折形式并不局限于以上几种,通过对支撑片2中间隙的截面形状、平面形状、深度、宽度、布置图案、布置密度等的设计、组合,及通过对支撑片2中可弯折区的数量、不可弯折区的数量、可弯折区的面积、可弯折区的弯曲弧度、可弯折区的长度延伸方向等的设计、组合,能够实现多种其它的弯折形式,此处不进行一一详述。
另外,值的一提的是,本申请实施例所提供的终端设备200,在弯折后展开至平面状态时,由于支撑片2的可弯折区设置有间隙3,间隙3可比较彻底和干净地释放支撑 片2在弯曲过程中产生的应力,从而使得展开后的支撑片2中应力残留的较少,甚至没有应力残留,也就避免了支撑片2弯折再展开后应力残留和积累的问题,解决了由此而引起的终端设备起拱变形的问题,提高了终端设备200弯折再展开后的表面平整度。可见,本申请实施例所提供的终端设备200,不仅在弯折状态下整个表面的平整度高,弯折活动不受限制,而且在弯折再展开后的状态下表面不会起拱,平整度同样较高,从而终端设备200在上述两种状态下的画面显示效果均较好。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何在本申请揭露的技术范围内的变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (17)

  1. 一种支撑片,其特征在于,所述支撑片包括至少一个可弯折区,至少一个所述可弯折区内设置有多个间隙,每个间隙具有至少一个开口,每个间隙中至少有一个开口的朝向与该间隙所在的可弯折区的弯折方向相同。
  2. 根据权利要求1所述的支撑片,其特征在于,所述间隙贯通所述支撑片的可弯折区的相对的两个主表面。
  3. 根据权利要求1所述的支撑片,其特征在于,所述间隙为开设于所述支撑片的可弯折区上的凹槽。
  4. 根据权利要求3所述的支撑片,其特征在于,所述间隙包括底面和内侧壁面,所述底面与所述内侧壁面之间圆滑过渡。
  5. 根据权利要求3所述的支撑片,其特征在于,所述间隙的深度与所述支撑片的厚度的比例的范围为77/80~97/100。
  6. 根据权利要求1所述的支撑片,其特征在于,所述间隙的截面形状为矩形,或梯形,或U形,或半圆形,或三角形;所述截面形状为,沿垂直于所述间隙所在的可弯折区的长度延伸方向,且垂直于所述支撑片的主表面的方向,对所述间隙截断后所获得的截面形状。
  7. 根据权利要求1所述的支撑片,其特征在于,所述间隙的内侧壁面为平面,或阶梯面,或弧面,或曲面,或波浪面。
  8. 根据权利要求1所述的支撑片,其特征在于,所述间隙的平面形状为条状,或孔状,或菱形状;所述间隙的平面形状为,所述间隙在所述支撑片的主表面上的正投影的形状。
  9. 根据权利要求8所述的支撑片,其特征在于,所述可弯折区上设置有多个相互平行的条状的间隙,且每个间隙的长度延伸方向平行于所述可弯折区的长度延伸方向。
  10. 根据权利要求8所述的支撑片,其特征在于,所述可弯折区上设置有多行间隙,每行间隙包括相互间隔布置的多个间隙,每行间隙所包括的多个间隙的排列方向平行于所述可弯折区的长度延伸方向;
    每个间隙为条状;或者,
    每个间隙为圆孔状或椭圆孔状;或者,
    每行间隙包括至少一个条状的间隙和多个圆孔状或椭圆孔状的间隙,且每个条状的间隙两侧分别设置有至少一个圆孔状或椭圆孔状的间隙;或者,
    每行间隙包括多个菱形状的间隙。
  11. 根据权利要求10所述的支撑片,其特征在于,沿垂直于所述可弯折区的长度延伸方向的方向,相邻两行间隙所包括的多个间隙相互错开设置。
  12. 根据权利要求1所述的支撑片,其特征在于,所述支撑片还包括至少一个不可弯折区,所述支撑片的可弯折区中非间隙区域的厚度小于或等于所述支撑片的不可弯折区的厚度。
  13. 根据权利要求1所述的支撑片,其特征在于,在垂直于所述支撑片的主表面的方向上,所述支撑片的两侧分别为第一侧和第二侧,所述可弯折区能够朝向所述第 一侧或所述第二侧弯折;所述可弯折区内所设置的多个间隙中,
    每个间隙贯通所述可弯折区的相对的两个主表面;或者,
    每个间隙为开设于所述可弯折区上的凹槽,每个间隙的开口朝向所述第一侧或所述第二侧。
  14. 根据权利要求1所述的支撑片,其特征在于,在垂直于所述支撑片的主表面的方向上,所述支撑片的两侧分别为第一侧和第二侧,所述可弯折区能够分别朝向所述第一侧和所述第二侧弯折;所述可弯折区内所设置的多个间隙中,
    每个间隙贯通所述可弯折区的相对的两个主表面;或者,
    每个间隙为开设于所述可弯折区上的凹槽,其中一些间隙的开口朝向所述第一侧,另一些间隙的开口朝向所述第二侧,且开口朝向所述第一侧的间隙与开口朝向所述第二侧的间隙交替间隔布置。
  15. 根据权利要求1所述的支撑片,其特征在于,所述支撑片的可弯折区上所设置的多个间隙为采用刻蚀工艺制备的多个间隙;或者,
    所述支撑片包括第一基材,及叠加在所述第一基材一侧表面上的第二基材,所述第二基材的与待形成间隙区域相对应的区域镂空,以与所述第一基材相配合形成所述支撑片的可弯折区上所设置的多个间隙。
  16. 根据权利要求1所述的支撑片,其特征在于,所述支撑片的厚度大于0.05mm且小于或等于0.5mm。
  17. 一种终端设备,包括柔性显示屏,其特征在于,还包括设置于所述柔性显示屏一侧的支撑片,所述支撑片为如权利要求1~16中任一项所述的支撑片。
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