WO2021232980A1 - 一种屏下支撑结构及显示装置 - Google Patents

一种屏下支撑结构及显示装置 Download PDF

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Publication number
WO2021232980A1
WO2021232980A1 PCT/CN2021/085872 CN2021085872W WO2021232980A1 WO 2021232980 A1 WO2021232980 A1 WO 2021232980A1 CN 2021085872 W CN2021085872 W CN 2021085872W WO 2021232980 A1 WO2021232980 A1 WO 2021232980A1
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WO
WIPO (PCT)
Prior art keywords
screen
under
rotating shaft
supporting
display screen
Prior art date
Application number
PCT/CN2021/085872
Other languages
English (en)
French (fr)
Inventor
罗晓飞
Original Assignee
京东方科技集团股份有限公司
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Filing date
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/631,406 priority Critical patent/US20220276678A1/en
Publication of WO2021232980A1 publication Critical patent/WO2021232980A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/18—Chains having special overall characteristics
    • F16G13/20—Chains having special overall characteristics stiff; Push-pull chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/025—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising a friction shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
    • F16H19/064—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the flexible push member uses a bended profile to generate stiffness, e.g. spreading belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion
    • F16H19/06—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member
    • F16H19/0645—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion comprising flexible members, e.g. an endless flexible member the flexible push or pull member having guiding means, i.e. the flexible member being supported at least partially by a guide to transmit the reciprocating movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1624—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with sliding enclosures, e.g. sliding keyboard or display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1675—Miscellaneous details related to the relative movement between the different enclosures or enclosure parts
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0235—Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts

Definitions

  • the present disclosure relates to the field of display, in particular to an under-screen support structure and a display device.
  • the embodiment of the present disclosure provides an under-screen support structure configured to support a slidable display screen in a display device, including: a sliding middle frame, a rotating shaft, and a supporting chain, wherein:
  • the rotating shaft is installed on the side of the sliding middle frame facing the sliding part of the display screen, and the rotating shaft is drivingly connected with the display screen through the supporting chain;
  • the supporting chain includes a multi-section supporting bar, the extending direction of the supporting bar is parallel to the axis of the rotating shaft; The size of one side of the shaft.
  • the support chain is drivingly connected to the display screen through a buffer layer on the side facing away from the rotating shaft.
  • the material of the buffer layer is silica gel.
  • the outer ring of the rotating shaft is a polygon, and any side of the polygon matches any section of the support bar.
  • the side length of any side of the polygon is equal to the size of a side of any section of the support bar close to the shaft.
  • the outer ring of the rotating shaft is circular.
  • a flexible layer is provided between the rotating shaft and the support chain.
  • the material of the flexible layer is rubber.
  • the sliding middle frame is in contact with the side of the support chain away from the display screen.
  • the embodiment of the present disclosure also provides a display device, a display screen and a fixed casing, and further includes the above-mentioned under-screen support structure, wherein:
  • the scrolling part of the display screen is drivingly connected with the rotating shaft in the under-screen supporting structure through the supporting chain in the under-screen supporting structure;
  • the non-rolling part of the display screen is fixed on the fixed casing.
  • FIG. 1 is a schematic structural diagram of an under-screen support structure provided by an embodiment of the disclosure
  • FIG. 2 is a schematic structural diagram of another under-screen support structure provided by an embodiment of the disclosure.
  • FIG. 3 is a schematic structural diagram of an under-screen support structure provided by an embodiment of the disclosure in a curled state when applied to a display device;
  • FIG. 4 is a schematic structural diagram of an under-screen support structure provided by an embodiment of the present disclosure when it is applied to a display device in an unfolded state;
  • FIG. 5 is a schematic structural diagram of another under-screen support structure provided by an embodiment of the present disclosure applied to a display device in a rolled state.
  • an embodiment of the present disclosure provides an under-screen support structure configured to support a scrollable display screen 6 in a display device, including: a sliding middle frame 1, a rotating shaft 2, and a supporting chain 3, wherein:
  • the rotating shaft 2 is installed on the side of the sliding middle frame 1 facing the rolling part of the display screen 6, and the rotating shaft 2 is drivingly connected with the display screen 6 through a supporting chain 3;
  • the supporting chain 3 includes a multi-section supporting bar 31, the extending direction of the supporting bar 31 is parallel to the axis of the shaft 2; size.
  • the above-mentioned under-screen support structure supports the rollable display screen 6 in the roll-up display device.
  • the display screen 6 may be a flexible screen or a multi-section spliced screen, etc., which is not specifically limited.
  • the above-mentioned under-screen support structure includes a sliding middle frame 1, a rotating shaft 2 and a supporting chain 3.
  • the rotating shaft 2 is installed on the side of the sliding middle frame 1 facing the sliding part of the display screen 6, and the rotating shaft 2 is supported on the side facing away from the sliding middle frame 1
  • the chain 3 is in transmission connection with the display screen 6, wherein the supporting chain 3 includes a plurality of supporting bars 31 arranged side by side.
  • the support bar 31 in contact with the shaft 2 in 3 is parallel to the axis of the shaft 2 at all times, and the support bar 31 in the support chain 3 that is not in contact with the shaft 2 is also always parallel to the axis of the shaft 2; the support bar 31 is perpendicular to the axis of the shaft 2
  • the cross section of is trapezoidal, and the size of the side facing away from the rotating shaft 2 is larger than the size of the side close to the rotating shaft 2, so that the supporting chain 3 is tightly wound on the rotating shaft 2 on the side facing away from the display screen 6.
  • the sliding middle frame 1 moves horizontally to the left
  • the support chain 3 unfolds to the right with the display screen 6
  • the shaft 2 rotates clockwise under the action of the support chain 3, and the sliding middle frame 1 moves horizontally.
  • the arc length of the rotation is equal to that of the shaft 2.
  • the rolling part of the display screen 6 is supported by the supporting chain 3 and the shaft 2 mounted on the sliding middle frame 1.
  • the arc length of the supporting chain 3 clockwise rotating around the shaft 2 is the same as the shaft 2
  • the arc length of the rotation is equal, and the length of the display screen 6 is the same as the arc length of the clockwise rotation of the support chain 3.
  • the distance that the sliding middle frame 1 moves to the left is equal to the arc length of the rotating shaft 2 to make the sliding middle frame 1
  • the support chain 3 can support the unfolded display screen 6 in time to prevent the display screen 6 from creases or warping.
  • a support chain 3 is provided under the sliding part of the display screen 6.
  • the support chain 3 and the shaft 2 cooperate to strengthen the support under the screen to avoid partial warpage of the screen, and ensure that the display screen 6 is evenly unfolded, and at the same time, the screen is improved. stability.
  • the support bar 31 in the support chain 3 is a steel bar.
  • the support chain 3 is connected to the display screen 6 through a buffer layer 4 on the side facing away from the rotating shaft 2.
  • a buffer layer 4 under the sliding part of the display screen 6 is a buffer layer 4, and a support chain 3 is bonded to the buffer layer 4 to prevent the support chain 3 from damaging the display screen 6.
  • the main function of the buffer layer 4 is to prevent the support chain 3 from damaging the display screen 6, so any material that can achieve the above function can be used as the buffer layer 4 mentioned above.
  • the material of the buffer layer 4 is silica gel.
  • the outer ring of the rotating shaft 2 is a polygon, and any side of the polygon matches any section of the support bar 31. Matching here means that when the supporting chain 3 is in contact with the rotating shaft 2, each section of the supporting bar 31 can be accurately wound around the outer ring of the rotating shaft 2 to avoid slippage between the supporting chain 3 and the rotating shaft 2.
  • the shaft 2 is a polygonal shaped shaft, and the side length of the polygon matches the short side of the steel bar, so that the shaft 2 matches the support chain 3 under the screen during rotation to ensure the display The screen 6 will not slip during the scrolling process.
  • the length of any side of the polygon is the same as the size of any side of the support bar 31 close to the shaft 2.
  • the side length of the polygon is the same as the short side of the steel bar to avoid slippage or slack.
  • the angle ⁇ formed between two adjacent sides of each two adjacent support bars and the number of sides n of the polygon satisfy the following relationship:
  • the outer ring of the rotating shaft 2 is circular.
  • a flexible layer 5 is provided between the rotating shaft 2 and the supporting chain 3.
  • the rotating shaft 2 has a standard circular shape, and a flexible layer 5 is coated on the rotating shaft 2 to contact the support chain 3 under the screen of the display screen 6.
  • the flexible layer 5 has a certain amount of compression, which can ensure that the steel bar under the screen is more firmly combined with the rotating shaft 2, while reducing friction, and the resistance during the flattening and winding process is smaller.
  • the flexible layer 5 needs to have a certain amount of compression, so any material that can achieve the above functions can be used as the aforementioned flexible layer 5.
  • the material of the flexible layer 5 is rubber.
  • the sliding middle frame 1 is in contact with the side of the supporting chain 3 away from the display screen 6.
  • the under-screen support chain 3 cooperates with the polygonal shaft 2 to ensure that the display screen 6 is evenly expanded. Flatten part of the support below the display screen 6
  • the chain 3 is in contact with the sliding middle frame 1 of the whole machine to improve the flatness and support of the surface and ensure the touch effect.
  • the supporting chain 3 under the display screen 6 at the curved surface of the rotating shaft 2 cooperates with the polygonal rotating shaft 2 to avoid slippage or slack.
  • the tail end of the shell is fixed with the torsion spring to provide constant tension during rewinding. Due to the cooperation of the under-screen support chain 3 with the sliding middle frame 1 and the rotating shaft 2, partial warpage of the screen is avoided, and the display screen 6 is more stable in use.
  • the embodiments of the present disclosure also provide a display device, including a display screen 6 and a fixed casing 7, and also including the above under-screen support structure, wherein:
  • the sliding part of the display screen 6 is connected to the rotating shaft 2 in the under-screen supporting structure through the supporting chain 3 in the under-screen supporting structure;
  • the non-rolling part of the display screen 6 is fixed on the fixed casing 7.
  • the non-rolling and sliding part of the display screen 6 is fixed on the fixed casing 7 of the whole machine, and the silicone layer is below the rolling and sliding part, and multiple supporting steel bars are bonded to the silicone to form a supporting chain 3, and the supporting chain 3 is wound on the rotating shaft. 2 on.
  • the sliding middle frame 1 drives the display screen 6 to unfold
  • the display screen 6 of the curled part drives the shaft 2 to rotate through the supporting chain 3, so that The display screen 6 is evenly unfolded to avoid partial warping of the screen, and the display screen 6 is more stable in use.

Abstract

一种屏下支撑结构及显示装置，屏下支撑结构被配置为支撑显示装置中可卷滑的显示屏（6），包括：滑动中框（1）、转轴（2）和支撑链条（3），其中：转轴（2）安装于滑动中框（1）朝向显示屏（6）卷滑部分一侧，且转轴（2）通过支撑链条（3）与显示屏（6）传动连接；支撑链条（3）包括多节支撑条（31），支撑条（31）的延伸方向与转轴（2）的轴线平行；支撑条（31）垂直转轴（2）轴线的截面为梯形，且背离转轴（2）一侧的尺寸大于靠近转轴（2）一侧的尺寸。

Description

一种屏下支撑结构及显示装置
相关申请的交叉引用
本公开要求在2020年05月21日提交中国专利局、申请号为202010434982.0、申请名称为“一种屏下支撑结构及显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及显示领域，尤其涉及一种屏下支撑结构及显示装置。
背景技术
随着科技的进步与社会的发展，柔性显示面板逐渐走入了消费者的视野，可弯折和可卷曲面板在方便消费者生活的同时也为消费者带来了全新的用户体验。目前显示装置在滑动展平柔性屏时，由于膜材特性，转轴处的屏幕上下容易翘曲，并在滑动时屏幕翘曲处产生应力集中。
发明内容
本公开实施例提供了一种屏下支撑结构，被配置为支撑显示装置中可卷滑的显示屏，包括：滑动中框、转轴和支撑链条，其中：
所述转轴安装于所述滑动中框朝向所述显示屏卷滑部分一侧，且所述转轴通过所述支撑链条与所述显示屏传动连接；
所述支撑链条包括多节支撑条，所述支撑条的延伸方向与所述转轴的轴线平行；所述支撑条垂直所述转轴轴线的截面为梯形，且背离所述转轴一侧的尺寸大于靠近所述转轴一侧的尺寸。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述支撑链条背离所述转轴一侧通过缓冲层与所述显示屏传动连接。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中， 所述缓冲层的材质为硅胶。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述转轴的外圈为多边形，所述多边形的任意一条边与任意一节所述支撑条相匹配。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述多边形任意一条边的边长与任意一节所述支撑条靠近所述转轴一侧的尺寸相等。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述支撑链条处于展平状态时，每相邻两节所述支撑条中相邻两个侧面之间所呈的夹角θ与所述多边形的边数n满足以下关系：
θ＝360°/n。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述转轴的外圈为圆形。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述转轴与所述支撑链条之间设有柔性层。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述柔性层的材质为橡胶。
在一种可能的实现方式中，在本公开实施例提供的上述屏下支撑结构中，所述滑动中框与所述支撑链条背离所述显示屏一侧接触。
本公开实施例还提供了一种显示装置，显示屏和固定机壳，还包括如上所述的屏下支撑结构，其中：
所述显示屏卷滑部分通过所述屏下支撑结构中的支撑链条与所述屏下支撑结构中的转轴传动连接；
所述显示屏非卷滑部分固定于所述固定机壳上。
附图说明
图1为本公开实施例提供的一种屏下支撑结构的结构示意图；
图2为本公开实施例提供的另一种屏下支撑结构的结构示意图；
图3为本公开实施例提供的一种屏下支撑结构应用在显示装置中卷曲状态的结构示意图；
图4为本公开实施例提供的一种屏下支撑结构应用在显示装置中展开状态的结构示意图；
图5为本公开实施例提供的另一种屏下支撑结构应用在显示装置中卷曲状态的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。在本公开的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
如图1所示，本公开实施例提供了一种屏下支撑结构，被配置为支撑显示装置中可卷滑的显示屏6，包括：滑动中框1、转轴2和支撑链条3，其中：
转轴2安装于滑动中框1朝向显示屏6卷滑部分一侧，且转轴2通过支撑链条3与显示屏6传动连接；
支撑链条3包括多节支撑条31，支撑条31的延伸方向与转轴2的轴线平行；支撑条31垂直转轴2轴线的截面为梯形，且背离转轴2一侧的尺寸大于靠近转轴2一侧的尺寸。
上述屏下支撑结构支撑卷滑显示装置中可卷滑的显示屏6，该显示屏6可以为柔性屏或者多节拼接屏等，具体不做限定。具体地，上述屏下支撑结构 包括滑动中框1、转轴2和支撑链条3，转轴2安装于滑动中框1朝向显示屏6卷滑部分一侧，转轴2背离滑动中框1一侧通过支撑链条3与显示屏6传动连接，其中支撑链条3包括多节并排设置的支撑条31，支撑条31的延伸方向与转轴2的轴线平行，即支撑条31沿转轴2的轴线方向延伸，支撑链条3中与转轴2接触的支撑条31均时时与转轴2的轴线平行，且支撑链条3中与转轴2未接触的支撑条31也均时时与转轴2的轴线平行；支撑条31垂直转轴2轴线的截面为梯形，且背离转轴2一侧的尺寸大于靠近转轴2一侧的尺寸，便于支撑链条3背离显示屏6一侧紧紧绕在转轴2上。在显示屏6卷滑过程中，滑动中框1向左水平运动，支撑链条3随显示屏6向右展开，转轴2在支撑链条3的作用下顺时针转动，滑动中框1水平运动的距离与转轴2转动的弧长相等。显示屏6的卷滑部分通过支撑链条3以及安装在滑动中框1上的转轴2支撑，当该卷滑部分展开过程中，绕在转轴2上支撑链条3顺时针转动的弧长与转轴2转动的弧长相等，进而显示屏6展开的长度与支撑链条3顺时针转动的弧长相等，此时滑动中框1向左运动的距离与转轴2转动的弧长相等以使滑动中框1以及支撑链条3能及时支撑展开的显示屏6，以防显示屏6出现折痕或翘曲。
因此，显示屏6卷滑部分下设置支撑链条3，通过支撑链条3与转轴2的配合，在加强屏下支撑的基础上，避免屏幕局部翘曲，保证显示屏6均匀展开，同时提升屏幕的稳定性。
一种可能实现的方式中，支撑链条3中的支撑条31为钢条。
可选地，支撑链条3背离转轴2一侧通过缓冲层4与显示屏6传动连接。
一种可能实现的方式中，显示屏6卷滑部分下方为缓冲层4，缓冲层4上粘接支撑链条3，以防支撑链条3破坏显示屏6。
需要说明的是，缓冲层4的主要作用是防止支撑链条3破坏显示屏6，故而凡是能实现上述作用的材料都可作为上述所称的缓冲层4。可选地，缓冲层4的材质为硅胶。
可选地，转轴2的外圈为多边形，多边形的任意一条边与任意一节支撑 条31相匹配。此处相匹配是指支撑链条3与转轴2接触时，每节支撑条31均能准确的绕在转轴2外圈，避免支撑链条3与转轴2之间打滑。
一种可能实现的方式中，如图1所示，转轴2为一个多边形异型轴，多边形边长与钢条短边相匹配，从而转动时转轴2与屏下的支撑链条3相配合，保证显示屏6在卷滑的过程中不会出现打滑。
可选地，多边形任意一条边的边长与任意一节支撑条31靠近转轴2一侧的尺寸相等。
一种可能实现的方式中，多边形边长与钢条短边一致，避免出现打滑或松弛的现象。
可选地，支撑链条处于展平状态时，每相邻两节支撑条中相邻两个侧面之间所呈的夹角θ与多边形的边数n满足以下关系：
θ＝360°/n。
需要说明的是，支撑链条处于展平状态时，每相邻两节支撑条中相邻两个侧面之间所呈的夹角θ与多边形的边数n满足上述关系保证转轴与支撑条接触时，在转轴的作用力下，相邻两节支撑条之间的侧面能贴合，避免出现打滑或松弛的现象。
可选地，转轴2的外圈为圆形。
可选地，转轴2与支撑链条3之间设有柔性层5。
一种可能实现的方式中，如图2所示，转轴2为标准圆形，转轴2上方包覆一层柔性层5，与显示屏6屏下的支撑链条3接触。柔性层5具有一定的压缩量，可以保证屏下钢条与转轴2结合更加牢靠，同时减小摩擦力，在展平和收卷过程中阻力更小。
需要说明的是，柔性层5需要具有一定的压缩量，故而凡是能实现上述作用的材料均可作为上述所称的柔性层5。可选地，柔性层5的材质为橡胶。
可选地，滑动中框1与支撑链条3背离显示屏6一侧接触。
一种可能实现的方式中，如图3和图4所示，通过屏下支撑链条3与多边形转轴2的配合，保证显示屏6均匀展开。展平部分显示屏6下方的支撑 链条3与整机滑动中框1接触，提升表面平坦度以及支撑性，保证触控效果。转轴2曲面处显示屏6下方支撑链条3与多边形转轴2配合，避免出现打滑或松弛的现象。壳体尾端与扭簧固定，提供收卷时的恒定拉力。由于屏下支撑链条3与滑动中框1和转轴2的配合，避免屏幕局部翘曲，显示屏6使用更加稳固。
如图3-图5所示，本公开实施例还提供了一种显示装置，包括显示屏6和固定机壳7，还包括如上的屏下支撑结构，其中：
显示屏6卷滑部分通过屏下支撑结构中的支撑链条3与屏下支撑结构中的转轴2传动连接；
显示屏6非卷滑部分固定于固定机壳7上。
上述显示装置中，显示屏6非卷滑部分固定在整机固定机壳7上，卷滑部分下方为硅胶层，硅胶上粘接多节支撑钢条形成支撑链条3，支撑链条3绕在转轴2上。在卷滑过程中，即由图3所示的卷曲状态至图4所示的展开状态，滑动中框1带动显示屏6展开，卷曲部分的显示屏6通过支撑链条3带动转轴2转动，使得显示屏6均匀展开，避免屏幕局部翘曲，显示屏6使用更加稳固。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (11)

  1. 一种屏下支撑结构，被配置为支撑显示装置中可卷滑的显示屏，其特征在于，包括：滑动中框、转轴和支撑链条，其中：
    所述转轴安装于所述滑动中框朝向所述显示屏卷滑部分一侧，且所述转轴通过所述支撑链条与所述显示屏传动连接；
    所述支撑链条包括多节支撑条，所述支撑条的延伸方向与所述转轴的轴线平行；所述支撑条垂直所述转轴轴线的截面为梯形，且背离所述转轴一侧的尺寸大于靠近所述转轴一侧的尺寸。
  2. 根据权利要求1所述的屏下支撑结构，其特征在于，所述支撑链条背离所述转轴一侧通过缓冲层与所述显示屏传动连接。
  3. 根据权利要求2所述的屏下支撑结构，其特征在于，所述缓冲层的材质为硅胶。
  4. 根据权利要求1所述的屏下支撑结构，其特征在于，所述转轴的外圈为多边形，所述多边形的任意一条边与任意一节所述支撑条相匹配。
  5. 根据权利要求4所述的屏下支撑结构，其特征在于，所述多边形任意一条边的边长与任意一节所述支撑条靠近所述转轴一侧的尺寸相等。
  6. 根据权利要求4所述的屏下支撑结构，其特征在于，所述支撑链条处于展平状态时，每相邻两节所述支撑条中相邻两个侧面之间所呈的夹角θ与所述多边形的边数n满足以下关系：
    θ＝360°/n。
  7. 根据权利要求1所述的屏下支撑结构，其特征在于，所述转轴的外圈为圆形。
  8. 根据权利要求7所述的屏下支撑结构，其特征在于，所述转轴与所述支撑链条之间设有柔性层。
  9. 根据权利要求8所述的屏下支撑结构，其特征在于，所述柔性层的材质为橡胶。
  10. 根据权利要求1所述的屏下支撑结构，其特征在于，所述滑动中框与所述支撑链条背离所述显示屏一侧接触。
  11. 一种显示装置，其特征在于，包括显示屏和固定机壳，还包括如权利要求1-10任一项所述的屏下支撑结构，其中：
    所述显示屏卷滑部分通过所述屏下支撑结构中的支撑链条与所述屏下支撑结构中的转轴传动连接；
    所述显示屏非卷滑部分固定于所述固定机壳上。
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