WO2021000860A1 - 卷轴式显示装置 - Google Patents

卷轴式显示装置 Download PDF

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Publication number
WO2021000860A1
WO2021000860A1 PCT/CN2020/099333 CN2020099333W WO2021000860A1 WO 2021000860 A1 WO2021000860 A1 WO 2021000860A1 CN 2020099333 W CN2020099333 W CN 2020099333W WO 2021000860 A1 WO2021000860 A1 WO 2021000860A1
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WO
WIPO (PCT)
Prior art keywords
rotating shaft
flexible screen
display device
connecting end
roll
Prior art date
Application number
PCT/CN2020/099333
Other languages
English (en)
French (fr)
Inventor
罗晓飞
祝尚杰
杨艳艳
孙宝锋
Original Assignee
京东方科技集团股份有限公司
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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 US17/256,161 priority Critical patent/US11369029B2/en
Publication of WO2021000860A1 publication Critical patent/WO2021000860A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings

Definitions

  • the present disclosure relates to the field of flexible display technology, and in particular to a scroll-type display device.
  • Existing reel-type display devices usually include a reel and a flexible screen that is retractably wound in the reel.
  • the flexible screen When the flexible screen is wound on the rotating shaft in the reel, due to the thickness of the flexible screen, the edge of one end of the flexible screen connected to the rotating shaft will produce a stepped structure. This stepped structure will cause stress concentration, which will easily lead to frictional damage and damage to the flexible screen. The problem of loose curl.
  • a main purpose of the present disclosure is to provide a roll-type display device that is less affected by the step structure of the flexible screen.
  • a scroll-type display device including a scroll and a flexible screen, the scroll including a housing and a rotating shaft, the rotating shaft is rotatably provided in the housing, and the flexible screen has a connecting end, The flexible screen is connected to the rotating shaft through the connecting end, and the flexible screen is configured to be retractably wound on the rotating shaft.
  • the flexible screen includes a cover film, a composite film layer and a plastic frame.
  • the cover film has a connecting section, and the connecting section is adjacent to the connecting end.
  • the rubber frame is arranged on a side surface of the connecting section of the cover film facing the rotating shaft.
  • the connecting section is connected to the rotating shaft through the rubber frame, and a glue layer is provided at the connection between the rubber frame and the connecting end, and the thickness of the glue layer is along the distance away from the connecting end. The direction is increasing.
  • the thickness of the plastic frame gradually decreases.
  • the plastic frame has a multi-segment structure. As the distance between the multi-segment plastic frame and the connecting end decreases, the thickness of the multi-segment plastic frame gradually decreases.
  • the thickness of each section of the plastic frame gradually decreases.
  • the edge of the connecting end is provided with a rubberized climbing structure, and the rubberized climbing structure smoothly transitions from the connecting end to the surface of the rotating shaft.
  • the thickness of each position of the rubber frame is the same.
  • the edge of the connecting end is provided with a rubberized climbing structure, and the rubberized climbing structure smoothly transitions from the connecting end to the surface of the rotating shaft.
  • the plastic frame has a multi-segment structure. As the distance between the plastic frame and the connecting end decreases, the thickness of the multiple plastic frames is the same. Wherein, the edge of the connecting end is provided with a rubberized climbing structure, and the rubberized climbing structure smoothly transitions from the connecting end to the surface of the rotating shaft.
  • the flexible screen further includes a support sheet, the support sheet is provided on a side of the composite film layer facing the rotating shaft, and the support sheet is made of a magnetic material.
  • the reel is provided with an electromagnet inside, and the electromagnet is configured to provide a magnetic field acting on the support sheet when the functional section is wound on the reel, so that the functional section is magnetically fixed .
  • the cross-sectional shape of the supporting piece in the axial direction of the rotating shaft is in the shape of " ⁇ ".
  • the flexible screen further includes a support sheet, the support sheet is provided on a side of the composite film layer facing the rotating shaft, and the support sheet is made of a magnetic material.
  • the scroll-type display device further includes an under-screen support structure.
  • the under-screen support structure is foldably connected to the housing, and is configured to be supported on a side of the flexible screen where a supporting sheet is provided when the flexible screen extends from the housing, the support The structure is provided with a magnet, and the magnet is magnetically engaged with the support sheet.
  • the roll-to-roll display device proposed in the present disclosure includes a cover film, a composite film layer and a plastic frame.
  • the covering film is divided into connecting section and functional section.
  • the connecting section is adjacent to the connecting end, the rubber frame is arranged at the bottom of the connecting section, the connecting section is connected to the rotating shaft through the rubber frame, and the connecting section is arc-shaped or spiral-shaped.
  • the functional section is connected to one end of the connecting section away from the connecting end, and the composite film layer is arranged at the bottom of the functional section.
  • the present disclosure uses a plastic frame to fix a part of the flexible screen (covering film) on the rotating shaft, and makes the part of the flexible screen arc-shaped or spiral-shaped, so that after the entire flexible screen is rolled up, the connecting end and The structural influence of the step difference between the rotating shafts is reduced.
  • the edge of the connecting end of the flexible screen is provided with a rubber-coated climbing structure, and the rubber-coated climbing structure smoothly transitions from the connecting end to the surface of the rotating shaft.
  • Fig. 1 is a partial cross-sectional view of a scroll-type display device according to an exemplary embodiment
  • FIG. 2 is another partial cross-sectional view of the scroll-type display device shown in FIG. 1;
  • FIG. 3 is a cross-sectional view of the flexible screen of the scroll-type display device shown in FIG. 1;
  • FIG. 4 is a schematic structural diagram of the under-screen support structure of the scroll display device shown in FIG. 1;
  • Fig. 5 is a partial cross-sectional view of a scroll-type display device according to another exemplary embodiment.
  • Support sheet
  • FIG. 1 it representatively shows a partial cross-sectional view of the scroll-type display device proposed in the present disclosure, which specifically shows the cross-sectional structure inside the reel, and also shows the structure of a part of the flexible screen 200.
  • the scroll-type display device proposed in the present disclosure mainly includes a reel and a flexible screen 200.
  • the reel mainly includes a housing and a rotating shaft 110.
  • the rotating shaft 110 is rotatably arranged in the housing, and the flexible screen 200 It has a connecting end 201 through which the flexible screen 200 is connected to the rotating shaft 110, and the flexible screen 200 is retractably wound on the rotating shaft 110.
  • FIGS. 2 to 5 FIG. 2 representatively shows another partial cross-sectional view of the scroll-type display device, which specifically shows the state of the flexible screen 200 when it is rolled on the rotating shaft 110;
  • FIG. 3 representatively A cross-sectional view of the flexible screen 200 is shown;
  • FIG. 4 representatively shows a schematic structural diagram of the under-screen support structure 400
  • FIG. 5 representatively shows a scroll type in another embodiment that conforms to the principles of the present disclosure.
  • the flexible screen 200 mainly includes a cover film 210, a composite film layer 220 (such as a Panel film layer), and a multi-segment plastic frame 250 (in the figure, a four-segment plastic frame 250 is taken as an example. ).
  • the cover film 210 can be roughly divided into a connecting section 211 and a functional section 212.
  • the connection section 211 of the cover film 210 is adjacent to the connection end 201, that is, the connection end 201 of the flexible screen 200 can be understood as one end of the connection section 211 of the cover film 210.
  • the plastic frame 250 is arranged at the bottom of the connecting section 211.
  • the multiple plastic frames 250 are spaced apart from the connecting end 201 from far to near.
  • the connecting section 211 can be connected to the surface of the shaft 110 through the plastic frame 250.
  • the spacers of the rubber frame 250 on the surface of the connecting section 211 of the covering film 210 and the rotating shaft 110 make the connecting section 211 approximately spiral, and the spiral path of the connecting section 211 is centered on the axis of the rotating shaft 110 and is determined by Its end connected to the functional section 212 to the connecting end 201 spirally approaches the axis.
  • the functional section 212 is connected to the end of the connecting section 211 away from the connecting end 201, and the composite film 220 is arranged at the bottom of the functional section 212 (the "bottom" means that when the flexible screen 200 is rolled up with the shaft 110, the functional section 212 faces the shaft One side of 110, the same below).
  • the present disclosure uses a plastic frame 250 to fix a part of the flexible screen 200 (cover film 210) on the rotating shaft 110, and make the orthographic projection of the part of the flexible screen 200 on a plane perpendicular to the axis of the rotating shaft 110 in an arc shape or
  • the spiral shape makes the flexible screen 200 less affected by the difference structure between the connecting end 201 and the rotating shaft 110 after the entire flexible screen 200 is rolled up.
  • the spaced distribution design of the multi-segment rubber frame 250 can provide a certain amount of displacement compensation during the curling process of the flexible screen 200, and prevent the fixed area of the flexible screen 200 and the rotating shaft 110 from peeling due to excessive force.
  • the thickness of the multi-segment rubber frame 250 may preferably be in a gradually decreasing relationship.
  • gradient reduction can be understood as the thickness of the different segments of the plastic frame 250 is gradually reduced, and the thickness of each segment of the plastic frame 250 itself is gradually reduced, or it can also be understood as the different segments of the plastic frame 250.
  • the thickness of each section of the plastic frame 250 decreases gradually, and the thickness of each section of the plastic frame 250 does not change.
  • the positions of any one plastic frame 250 may preferably be in a decreasing relationship. In other embodiments, when the thickness of the multi-segment plastic frame 250 is gradually reduced, the thickness of any one plastic frame 250 may be the same at each position.
  • the maximum thickness of the plastic frame 250 close to the connection end 201 may preferably be less than or equal to the minimum thickness of another plastic frame 250 far from the connection end 201.
  • the number or structure (for example, thickness relationship) of the plastic frame 250 may adopt other designs.
  • the plastic frame 250 can be a one-piece structure, and the plastic frame 250 is provided at the bottom of the entire connecting section 211 of the cover film 210.
  • the thickness of each position of the plastic frame 250 may be preferably designed to be gradually The relationship of reduction.
  • the thickness of each position of the plastic frame 250 can be the same, and then the connecting section 211 of the covering film 210 is on a plane perpendicular to the axis of the rotating shaft 110.
  • the orthographic projection of is roughly in the shape of an arc centered on the axis of the rotating shaft 110.
  • each plastic frame 250 can also be the same.
  • the connecting section 211 of the cover film 210 is on a plane perpendicular to the axis of the rotating shaft 110.
  • the orthographic projection is roughly in the shape of an arc with the axis of the rotating shaft 110 as the center.
  • the edge of the connecting end 201 of the flexible screen 200 may preferably be provided with a rubberized climbing structure 260.
  • the rubberized climbing structure 260 extends from the connecting end 201 to the surface of the shaft 110 Smooth transition.
  • the glued climbing structure 260 can be formed by glueing between the edge of the connecting end 201 and the surface of the rotating shaft 110.
  • the rubber-coated climbing structure 260 smoothly transitions from the connecting end 201 to the surface of the rotating shaft 110, so as to avoid the appearance of a stepped structure of the connecting end 201.
  • the rubber frame 250 when the rubber frame 250 (whether the rubber frame 250 is a monolithic structure or a multi-segment structure) adopts the design of the above-mentioned decreasing thickness, the rubber frame located at the edge of the connecting end 201
  • the thickness of 250 is designed to approach zero, so that the thickness of the flexible screen 200 at the connection end 201 is approximately equal to the thickness of the cover film 210.
  • a rubberized climbing structure 260 is set between the connecting end 201 of the flexible screen 200 and the surface of the rotating shaft 110, which is equivalent to applying glue between the cover film 210 and the surface of the rotating shaft 110.
  • the rubberized climbing structure 260 only requires There is a smooth transition on the slight step formed between the cover film 210 and the surface of the rotating shaft 110.
  • the plastic frame 250 (regardless of whether the plastic frame 250 is an integral structure or a multi-segment structure) adopts other thickness designs, for example, when the above-mentioned design with the same thickness is adopted, the edge of the connecting end 201 of the flexible screen 200 can also be connected with The glue applied between the surfaces of the rotating shaft 110 forms a smooth transition of the glued climbing structure 260, which is not limited to this embodiment.
  • the flexible screen 200 may also preferably include a supporting sheet 240.
  • the supporting sheet 240 is disposed at the bottom of the composite film layer 220, and the material of the supporting sheet 240 may preferably be a magnetic material.
  • the inside of the reel can preferably be provided with an electromagnet 300.
  • the electromagnet 300 can be energized, thereby providing an effect on the magnetic material.
  • the magnetic field of the supporting sheet 240 further makes the functional section 212 of the flexible screen 200 magnetically fixed, and further optimizes the winding effect of the flexible screen 200.
  • the supporting sheet 240 may preferably be made of a steel sheet. In other embodiments, the supporting sheet 240 can also be selected from other magnetic materials, which is not limited to this embodiment.
  • the cross-sectional shape of the supporting piece 240 in the axial direction of the rotating shaft 110 may preferably be in the shape of " ⁇ " .
  • the contact area of the supporting sheet 240 with the screen (covering film 210) of the flexible screen 200 in the inner ring is It is smaller, so as to avoid the abrasion of the flexible screen 200 by the supporting sheet 240 in the winding state.
  • the supporting sheet 240 can also adopt other cross-sectional structures, and is not limited to this embodiment.
  • the scroll display device may also preferably include an under-screen supporting structure 400.
  • the under-screen support structure 400 is foldably connected to the housing, and is used to support the bottom of the flexible screen 200 when the flexible screen 200 extends from the housing (that is, the flexible screen 200 is provided with a supporting sheet 240).
  • the supporting structure may preferably be provided with a magnet 410, and the under-screen supporting structure 400 can use the magnet 410 to magnetically cooperate with the supporting sheet 240 of the flexible screen 200, thereby optimizing the supporting effect of the flexible screen 200.
  • the position of the magnet 410 when the under-screen support structure 400 is unfolded, the position of the magnet 410 may preferably correspond to the two convex structures of the support sheet 240 whose cross-section of the flexible screen 200 is in the shape of " ⁇ ". correspond.
  • the position of the magnet 410 can also be flexibly adjusted, and when the support piece 240 adopts other cross-sectional structures, the position of the magnet 410 can also be adjusted accordingly, which is not limited to this embodiment.
  • the under-screen support structure 400 may preferably adopt a retractable fork frame structure.
  • the fork frame structure has multiple sets of fork frames 420, and each set of fork frames 420 includes a middle phase.
  • Two hinged fork arms 421, one end of one of the two fork arms 421 is hinged with one end of one fork arm 421 of the adjacent fork frame 420, and the other end is hinged with the other adjacent fork frame 420
  • One end of one of the fork arms 421 (or one side frame 430 of the fork frame structure) is hinged, and one end of the other fork arm 421 of the two fork arms 421 is connected to the other fork arm of the adjacent fork frame 420
  • One end of the 421 is hinged, and the other end is hinged to one end of another fork arm 421 (or one side frame 430 of the fork structure) of another adjacent fork 420.
  • the above-mentioned magnet 410 may be preferably arranged at the junction
  • the flexible screen 200 may also preferably include a protective layer 230 (for example, a back film protective layer).
  • the protective layer 230 may be disposed between the composite film layer 220 and the supporting sheet 240.
  • the overall module of the flexible screen 200 adopts a thin structure.
  • the flexible screen 200 is flattened, it is supported by the support sheet 240, which helps to improve the flatness of the screen (cover film 210) surface and facilitate the realization of the touch sensor ( Touch Sensor) function.
  • reel-type display devices shown in the drawings and described in this specification are only a few examples of many types of reel-type display devices that can adopt the principles of the present disclosure. It should be clearly understood that the principle of the present disclosure is by no means limited to any details of the reel-type display device or any component of the reel-type display device shown in the drawings or described in this specification.
  • the roll-to-roll display device proposed in the present disclosure includes a cover film, a composite film layer and a plastic frame.
  • the covering film is divided into connecting section and functional section.
  • the connecting section is adjacent to the connecting end, the rubber frame is arranged at the bottom of the connecting section, the connecting section is connected to the rotating shaft through the rubber frame, and the orthographic projection of the connecting section on a plane perpendicular to the axis of the rotating shaft is arc-shaped or spiral-shaped.
  • the functional section is connected to one end of the connecting section away from the connecting end, and the composite film layer is arranged at the bottom of the functional section.
  • the present disclosure uses a plastic frame to fix a part of the flexible screen (covering film) on the rotating shaft, and makes the part of the flexible screen arc-shaped or spiral-shaped, so that after the entire flexible screen is rolled up, the connecting end and The structural influence of the step difference between the rotating shafts is reduced.

Abstract

一种卷轴式显示装置，包括卷轴以及柔性屏（200），卷轴包括外壳及转轴（110），转轴（110）可转动地设于外壳内，柔性屏（200）具有连接端（201），柔性屏（200）通过连接端（201）连接于转轴（110），柔性屏（200）被配置为可收放地收卷于转轴（110）。柔性屏（200）包括覆盖膜（210）以及胶框（250）。覆盖膜（210）具有连接段（211），连接段（211）邻接于连接端（201）。胶框（250）设于覆盖膜（210）的连接段（211）朝向转轴（110）的一侧面。其中，连接段（211）通过胶框（250）连接于转轴（110），胶框（250）与连接端（201）的连接处设有涂胶层，且涂胶层的厚度沿着远离连接端（201）的方向渐增。

Description

卷轴式显示装置
相关申请的交叉引用
本申请要求于2019年7月4日提交的中国专利申请201910599775.8的优先权，其内容通过引用的方式全文并入于此。
技术领域
本公开涉及柔性显示技术领域，尤其涉及一种卷轴式显示装置。
背景技术
现有卷轴式显示装置通常包括卷轴和可伸缩地收卷在卷轴内的柔性屏。柔性屏收卷在卷轴内的转轴上时，由于柔性屏的自身厚度，柔性屏连接于转轴的一端边缘处会产生段差结构，该段差结构会产生应力集中现象，从而容易导致柔性屏摩擦损伤和卷曲松散的问题。
发明内容
本公开的一个主要目的在于提供一种受柔性屏的段差结构影响较小的卷轴式显示装置。
为实现上述目的，本公开采用如下技术方案：
根据本公开的一个方面，提供一种卷轴式显示装置，包括卷轴以及柔性屏，所述卷轴包括外壳及转轴，所述转轴可转动地设于所述外壳内，所述柔性屏具有连接端，所述柔性屏通过所述连接端连接于所述转轴，所述柔性屏被配置为可收放地收卷于所述转轴。其中，所述柔性屏包括覆盖膜、复合膜层以及胶框。所述覆盖膜具有连接段，所述连接段邻接于所述连接端。所述胶框设于所述覆盖膜的所述连接段朝向所述转轴的一侧面。其中，所述连接段通过所述胶框连接于所述转轴，且所述胶框与所述连接端连接处设有涂胶层，且所述涂胶层的厚度沿着远离所述连接端的方向渐增。
根据本公开的其中一个实施方式，随着所述胶框相对于所述连接端的距离减小，所述胶框的厚度逐渐减小。
根据本公开的其中一个实施方式，所述胶框呈多段式结构，随着多段胶框相对于所述连接端的距离减小，多段所述胶框的厚度逐渐减小。
根据本公开的其中一个实施方式，随着所述胶框相对于所述连接端的距离减小，每段所述胶框的厚度渐减。
根据本公开的其中一个实施方式，所述连接端的边缘设有涂胶爬坡结构，所述涂胶爬坡结构由所述连接端至所述转轴表面平滑过渡。
根据本公开的其中一个实施方式，随着所述胶框相对于所述连接端的距离减小，所述 胶框的各位置的厚度相同。其中，所述连接端的边缘设有涂胶爬坡结构，所述涂胶爬坡结构由所述连接端至所述转轴表面平滑过渡。
根据本公开的其中一个实施方式，所述胶框呈多段式结构，随着所述胶框相对于所述连接端的距离减小，多段所述胶框的厚度相同。其中，所述连接端的边缘设有涂胶爬坡结构，所述涂胶爬坡结构由所述连接端至所述转轴表面平滑过渡。
根据本公开的其中一个实施方式，所述柔性屏还包括支撑片，所述支撑片设于所述复合膜层朝向所述转轴的一侧，所述支撑片的材质为磁性材料。其中，所述卷轴内部设有电磁铁，所述电磁铁被配置为在所述功能段收卷于所述卷轴时提供一作用于所述支撑片的磁场，而使所述功能段磁吸固定。
根据本公开的其中一个实施方式，所述支撑片在沿所述转轴的轴线方向上的截面形状呈“ㄇ”字型。
根据本公开的其中一个实施方式，所述柔性屏还包括支撑片，所述支撑片设于所述复合膜层朝向所述转轴的一侧，所述支撑片的材质为磁性材料。其中，所述卷轴式显示装置还包括屏下支撑结构。所述屏下支撑结构可收放地连接于所述外壳，并被配置为在所述柔性屏伸出于所述壳体时支撑于所述柔性屏设有支撑片的一侧，所述支撑结构设有磁铁，所述磁铁与所述支撑片磁吸配合。
由上述技术方案可知，本公开提出的卷轴式显示装置的优点和积极效果在于：
本公开提出的卷轴式显示装置，包括覆盖膜、复合膜层和胶框。覆盖膜分为连接段和功能段。连接段邻接于连接端，胶框设于连接段底部，连接段通过胶框连接于转轴，且连接段呈圆弧状或螺线状。功能段连接于连接段的远离连接端的一端，复合膜层设于功能段底部。通过上述设计，本公开利用胶框将一部分柔性屏(覆盖膜)固定在转轴上，并使该部分柔性屏呈圆弧状或螺线状，使得柔性屏整体收卷后，受其连接端与转轴之间的段差结构影响减小。
进一步地，在本公开的其中一个实施方式中，柔性屏的连接端的边缘设有涂胶爬坡结构，该涂胶爬坡结构由连接端至转轴表面平滑过渡。通过上述设计，本公开能够完全消除连接端与转轴之间的段差结构，从而使柔性屏收卷在转轴上时不再受段差结构的影响。
附图说明
通过结合附图考虑以下对本公开的优选实施方式的详细说明，本公开的各种目标、特征和优点将变得更加显而易见。附图仅为本公开的示范性图解，并非一定是按比例绘制。在附图中，同样的附图标记始终表示相同或类似的部件。其中：
图1是根据一示例性实施方式示出的一种卷轴式显示装置的局部剖视图；
图2是图1示出的卷轴式显示装置的另一局部剖视图；
图3是图1示出的卷轴式显示装置的柔性屏的截面图；
图4是图1示出的卷轴式显示装置的屏下支撑结构的结构示意图；
图5是根据另一示例性实施方式示出的一种卷轴式显示装置的局部剖视图。
附图标记说明如下：
110.转轴；
200.柔性屏；
201.连接端；
210.覆盖膜；
211.连接段；
212.功能段；
220.复合膜层；
230.保护层；
240.支撑片；
250.胶框；
260.涂胶爬坡结构；
300.电磁铁；
400.屏下支撑结构；
410.磁铁；
420.叉架；
421.叉臂；
430.边框。
具体实施方式
体现本公开特征与优点的典型实施例将在以下的说明中详细叙述。应理解的是本公开能够在不同的实施例上具有各种的变化，其皆不脱离本公开的范围，且其中的说明及附图在本质上是作说明之用，而非用以限制本公开。
在对本公开的不同示例性实施方式的下面描述中，参照附图进行，所述附图形成本公开的一部分，并且其中以示例方式显示了可实现本公开的多个方面的不同示例性结构、系统和步骤。应理解的是，可以使用部件、结构、示例性装置、系统和步骤的其他特定方案，并且可在不偏离本公开范围的情况下进行结构和功能性修改。而且，虽然本说明书中可使用术语“之上”、“之间”、“之内”等来描述本公开的不同示例性特征和元件，但是这些术语用于本文中仅出于方便，例如根据附图中所述的示例的方向。本说明书中的任何内容都不应理解为需要结构的特定三维方向才落入本公开的范围内。
参阅图1，其代表性地示出了本公开提出的卷轴式显示装置的局部剖视图，其具体示出了卷轴内的剖视结构，同时示出了部分柔性屏200的结构。本领域技术人员容易理解的是，为将本公开的相关设计应用于其他类型的如下显示装置或其他工艺中，而对下述的具体实施方式做出多种改型、添加、替代、删除或其他变化，这些变化仍在本公开提出的卷 轴式显示装置的原理的范围内。
如图1所示，在本实施方式中，本公开提出的卷轴式显示装置主要包括卷轴以及柔性屏200，卷轴主要包括外壳及转轴110，该转轴110可转动地设置在外壳内，柔性屏200具有连接端201，柔性屏200通过该连接端201连接于转轴110，且柔性屏200可收放地收卷在转轴110上。配合参阅图2至图5，图2中代表性地示出了卷轴式显示装置的另一局部剖视图，其具体示出了柔性屏200收卷在转轴110时的状态；图3中代表性地示出了柔性屏200的截面图；图4中代表性地示出了屏下支撑结构400的结构示意图；图5中代表性地示出了符合本公开原理的另一实施方式中的卷轴式显示装置的局部剖视图。以下结合上述附图，对本公开提出的卷轴式显示装置的各主要组成部分的结构、连接方式和功能关系进行详细说明。
如图1至图3所示，在本实施方式中，柔性屏200主要包括覆盖膜210、复合膜层220(例如Panel膜层)以及多段胶框250(图中以四段胶框250为示例)。具体而言，覆盖膜210可以大致分为连接段211和功能段212。覆盖膜210的连接段211邻接于连接端201，即可将柔性屏200的连接端201理解为覆盖膜210的连接段211的一端。胶框250设置在连接段211的底部，多段胶框250在相对于连接端201由远至近的方向上间隔分布，连接段211能够通过胶框250连接在转轴110表面上。通过胶框250在覆盖膜210的连接段211与转轴110表面的隔垫，使得连接段211大致呈螺线状，且连接段211的螺线路径是以转轴110的轴心为中心，且由其连接于功能段212的一端至连接端201向轴心螺旋靠近。功能段212连接在连接段211的远离连接端201的一端，复合膜层220设置在功能段212的底部(该“底部”即为当柔性屏200收卷与转轴110时，功能段212朝向转轴110的一侧面，以下亦同)。通过上述设计，本公开利用胶框250将一部分柔性屏200(覆盖膜210)固定在转轴110上，并使该部分柔性屏200在垂直于转轴110轴线的平面上的正投影呈圆弧状或螺线状，使得柔性屏200整体收卷后，受其连接端201与转轴110之间的段差结构影响减小。进一步地，多段胶框250间隔分布的设计，可以在柔性屏200卷曲过程中提供一定量的位移补偿，防止柔性屏200与转轴110的固定区域因受力过大发生剥离(Peeling)现象。
进一步地，如图1所示，基于连接段211在垂直于转轴110轴线的平面上的正投影大致呈螺线状的设计，在本实施方式中，随着相对于连接端201的距离逐渐减小，多段胶框250的厚度可以优选为渐减的关系。其中，上述“渐减”的描述，可以理解为各段不同的胶框250的厚度渐减，且每一段胶框250自身的厚度渐减，或者，亦可理解为各段不同的胶框250的厚度渐减，且每一段胶框250自身的厚度不变。
更进一步地，如图1所示，基于多段胶框250的厚度渐减的设计，在本实施方式中，随着相对于连接端201的距离逐渐减小，任意一个胶框250的自身各位置的厚度可以优选为渐减的关系。在其他实施方式中，当多段胶框250的厚度渐减时，任意一个胶框250自 身各位置的厚度亦可相同。
更进一步地，如图1所示，基于多段胶框250的厚度渐减，且每一段胶框250的各位置的厚度渐减的设计，在本实施方式中，对于相邻两段胶框250而言，靠近连接端201的胶框250的最大厚度可以优选为小于或等于远离连接端201的另一胶框250的最小厚度。
在其他实施方式中，胶框250的数量或结构(例如厚度关系)亦可采用其他设计。举例而言，如图5所示，胶框250可以为一段整体结构，该一段胶框250设置在覆盖膜210的整个连接段211的底部。
进一步地，基于胶框250为一段整体结构的设计，在该实施方式中，随着相对于连接端201的距离逐渐减小，该一段胶框250的自身各位置的厚度可以优选地设计为渐减的关系。在其他实施方式中，当胶框250为一段整体结构时，该一段胶框250的自身各位置的厚度亦可相同，则此时覆盖膜210的连接段211在垂直于转轴110轴线的平面上的正投影，大致呈以转轴110的轴心为圆心的圆弧状。
另外，在其他实施方式中，当胶框250为多段结构的设计时，各段胶框250的厚度亦可相同，则此时覆盖膜210的连接段211在垂直于转轴110轴线的平面上的正投影，大致呈以转轴110的轴心为圆心的圆弧状。
如图1和图2所示，在本实施方式中，柔性屏200的连接端201的边缘可以优选地设置有涂胶爬坡结构260，涂胶爬坡结构260由连接端201至转轴110表面平滑过渡。该涂胶爬坡结构260可以通过在连接端201的边缘与转轴110表面之间涂胶形成。该涂胶爬坡结构260是由连接端201至转轴110表面平滑过渡，从而避免连接端201的段差结构的出现。通过上述设计，本公开能够完全消除连接端201与转轴110之间的段差结构，从而使柔性屏200收卷在转轴110上时不再受段差结构的影响。降低柔性屏200在与转轴110连接处卷曲的应力。
承上，基于涂胶爬坡结构260的设计，当胶框250(无论胶框250为整体结构或为多段式结构)采用上述厚度渐减的设计时，可以将位于连接端201边缘的胶框250厚度设计为趋近于零，从而使得该连接端201处的柔性屏200厚度近似地仅等于覆盖膜210的厚度。在此基础上，在柔性屏200的连接端201与转轴110表面之间设置涂胶爬坡结构260，相当于是在覆盖膜210与转轴110表面之间涂胶，涂胶爬坡结构260仅需在覆盖膜210与转轴110表面之间形成的微小段差上平滑过渡。
需要说明的是，当胶框250(无论胶框250为整体结构或为多段式结构)采用其他厚度设计时，例如采用上述厚度相同的设计时，同样可以在柔性屏200的连接端201边缘与转轴110表面之间涂胶形成平滑过渡的涂胶爬坡结构260，并不以本实施方式为限。
进一步地，如图3所示，在本实施方式中，柔性屏200还可以优选地包括支撑片240。具体而言，该支撑片240设置在复合膜层220的底部，支撑片240的材质可以优选为磁性材料。相对应地，卷轴的内部可以优选地设置有电磁铁300，当柔性屏200的功能段212 收卷在卷轴上时，可以使该电磁铁300得电，从而提供一个作用于由磁性材料制成的支撑片240的磁场，进而使柔性屏200的功能段212磁吸固定，进一步优化柔性屏200的收卷效果。
更进一步地，基于支撑片240和电磁铁300的设计，在本实施方式中，支撑片240可以优选地采用钢片制程。在其他实施方式中，支撑片240亦可选择其他磁性材料，并不以本实施方式为限。
更进一步地，如图3所示，基于支撑片240和电磁铁300的设计，在本实施方式中，支撑片240在沿转轴110的轴线方向上的截面形状可以优选地呈“ㄇ”字型。通过上述设计，当柔性屏200收卷在转轴110上时，且当电磁铁300提供磁场吸固支撑片240时，支撑片240与其内圈的柔性屏200的屏幕(覆盖膜210)的接触面积较小，从而能够尽量避免支撑片240在收卷状态下对柔性屏200的磨损。在其他实施方式中，支撑片240亦可采用其他截面形状的结构，并不以本实施方式为限。
更进一步地，如图4所示，基于支撑片240的设计(无论是否设置电磁铁300)，在本实施方式中，卷轴式显示装置还可以优选地包括屏下支撑结构400。具体而言，该屏下支撑结构400可收放地连接在外壳上，其用于在柔性屏200伸出于壳体时支撑在柔性屏200的底部(即柔性屏200的设置有支撑片240的一侧)。其中，支撑结构上可以优选地设置有磁铁410，屏下支撑结构400能够利用该磁铁410与柔性屏200的支撑片240磁吸配合，从而优化对柔性屏200的支撑效果。
更进一步地，在本实施方式中，在屏下支撑结构400展开时，上述磁铁410的位置可以优选地与柔性屏200的截面呈“ㄇ”字型的支撑片240的两个凸起结构相对应。在其他实施方式中，磁铁410的位置亦可灵活调整，且当支撑片240采用其他截面结构时，磁铁410的位置亦可进行相应调整，均不以本实施方式为限。
具体而言，如图4所示，在本实施方式中，屏下支撑结构400可以优选地采用可伸缩的叉架结构，叉架结构具有多组叉架420，每组叉架420包括中部相铰接的两根叉臂421，这两根叉臂421中的其中一根叉臂421的一端与相邻叉架420的一根叉臂421的一端铰接，另一端与另一相邻叉架420的一根叉臂421的一端(或叉架结构的一侧边框430)铰接，这两根叉臂421中的其中另一根叉臂421的一端与相邻叉架420的另一根叉臂421的一端铰接，另一端与另一相邻叉架420的另一根叉臂421的一端(或叉架结构的一侧边框430)铰接。其中，上述的磁铁410可以优选地设置在相邻叉架420的两根叉臂421的交接处。在其他实施方式中，屏下支撑结构400亦可采用其他设计，并不以本实施方式为限。
进一步地，如图3所示，在本实施方式中，柔性屏200还可以优选地包括保护层230(例如背膜保护层)。具体而言，该保护层230可以设置在复合膜层220与支撑片240之间。
其中，在本实施方式中，柔性屏200的整体模组采用薄型结构，柔性屏200展平时依 靠支撑片240支撑，有助于提升屏幕(覆盖膜210)表面的平坦度，方便实现触摸传感器(Touch Sensor)的功能。
在此应注意，附图中示出而且在本说明书中描述的卷轴式显示装置仅仅是能够采用本公开原理的许多种卷轴式显示装置中的几个示例。应当清楚地理解，本公开的原理绝非仅限于附图中示出或本说明书中描述的卷轴式显示装置的任何细节或卷轴式显示装置的任何部件。
综上所述，本公开提出的卷轴式显示装置，包括覆盖膜、复合膜层和胶框。覆盖膜分为连接段和功能段。连接段邻接于连接端，胶框设于连接段底部，连接段通过胶框连接于转轴，且连接段在垂直于转轴轴线的平面上的正投影呈圆弧状或螺线状。功能段连接于连接段的远离连接端的一端，复合膜层设于功能段底部。通过上述设计，本公开利用胶框将一部分柔性屏(覆盖膜)固定在转轴上，并使该部分柔性屏呈圆弧状或螺线状，使得柔性屏整体收卷后，受其连接端与转轴之间的段差结构影响减小。
以上详细地描述和/或图示了本公开提出的卷轴式显示装置的示例性实施方式。但本公开的实施方式不限于这里所描述的特定实施方式，相反，每个实施方式的组成部分和/或步骤可与这里所描述的其它组成部分和/或步骤独立和分开使用。一个实施方式的每个组成部分和/或每个步骤也可与其它实施方式的其它组成部分和/或步骤结合使用。在介绍这里所描述和/或图示的要素/组成部分/等时，用语“一个”、“一”和“上述”等用以表示存在一个或多个要素/组成部分/等。术语“包含”、“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等。此外，权利要求书及说明书中的术语“第一”和“第二”等仅作为标记使用，不是对其对象的数字限制。
虽然已根据不同的特定实施例对本公开提出的卷轴式显示装置进行了描述，但本领域技术人员将会认识到可在权利要求的精神和范围内对本公开的实施进行改动。

Claims (11)

  1. 一种卷轴式显示装置，包括卷轴以及柔性屏，所述卷轴包括外壳及转轴，所述转轴可转动地设于所述外壳内，所述柔性屏具有连接端，所述柔性屏通过所述连接端连接于所述转轴，所述柔性屏被配置为可收放地收卷于所述转轴；其中，所述柔性屏包括：
    覆盖膜，具有连接段，所述连接段邻接于所述连接端；以及
    胶框，设于所述覆盖膜的所述连接段朝向所述转轴的一侧面；
    其中，所述连接段通过所述胶框连接于所述转轴，所述胶框与所述连接端连接处设有涂胶层，且所述涂胶层的厚度沿着远离所述连接端的方向渐增。
  2. 根据权利要求1所述的卷轴式显示装置，其中，随着所述胶框相对于所述连接端的距离减小，所述胶框的厚度渐减。
  3. 根据权利要求1所述的卷轴式显示装置，其中，所述胶框呈多段式结构，随着多段所述胶框相对于所述连接端的距离减小，多段所述胶框的厚度渐减。
  4. 根据权利要求3所述的卷轴式显示装置，其中，随着每段所述胶框相对于所述连接端的距离减小，每段所述胶框的厚度渐减。
  5. 根据权利要求1至4任一项所述的卷轴式显示装置，其中，所述连接端的边缘设有涂胶爬坡结构，所述涂胶爬坡结构由所述连接端至所述转轴表面平滑过渡。
  6. 根据权利要求1所述的卷轴式显示装置，其中，随着所述胶框相对于所述连接端的距离减小，所述胶框的各位置的厚度相同；其中，所述连接端的边缘设有涂胶爬坡结构，所述涂胶爬坡结构由所述连接端至所述转轴表面平滑过渡。
  7. 根据权利要求1所述的卷轴式显示装置，其中，所述胶框呈多段式结构，随着多段所述胶框相对于所述连接端的距离减小，多段所述胶框的厚度相同；其中，所述连接端的边缘设有涂胶爬坡结构，所述涂胶爬坡结构由所述连接端至所述转轴表面平滑过渡。
  8. 根据权利要求1所述的卷轴式显示装置，其特征在于，所述覆盖膜还具有功能段，所述功能段连接于所述连接段；所述柔性屏还包括复合膜层，设于所述覆盖膜的所述功能段朝向所述转轴的一侧面。
  9. 根据权利要求8所述的卷轴式显示装置，其中，所述柔性屏还包括支撑片，所述支撑片设于所述复合膜层朝向所述转轴的一侧面，所述支撑片的材质为磁性材料；其中，所述卷轴内部设有电磁铁，所述电磁铁被配置为在所述功能段收卷于所述卷轴时提供一作用于所述支撑片的磁场，而使所述功能段磁吸固定。
  10. 根据权利要求9所述的卷轴式显示装置，其中，所述支撑片在沿所述转轴的轴线方向上的截面形状呈“ㄇ”字型。
  11. 根据权利要求8所述的卷轴式显示装置，其中，所述柔性屏还包括支撑片， 所述支撑片设于所述复合膜层朝向所述转轴的一侧面，所述支撑片的材质为磁性材料；其中，所述卷轴式显示装置还包括：
    屏下支撑结构，可收放地连接于所述外壳，并被配置为在所述柔性屏伸出于所述壳体时支撑于所述柔性屏设置有所述支撑片的一侧面，所述支撑结构设有磁铁，所述磁铁与所述支撑片磁吸配合。
PCT/CN2020/099333 2019-07-04 2020-06-30 卷轴式显示装置 WO2021000860A1 (zh)

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