WO2022062014A1 - 显示装置 - Google Patents

显示装置 Download PDF

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Publication number
WO2022062014A1
WO2022062014A1 PCT/CN2020/122983 CN2020122983W WO2022062014A1 WO 2022062014 A1 WO2022062014 A1 WO 2022062014A1 CN 2020122983 W CN2020122983 W CN 2020122983W WO 2022062014 A1 WO2022062014 A1 WO 2022062014A1
Authority
WO
WIPO (PCT)
Prior art keywords
support plate
display screen
flexible display
display device
metal plate
Prior art date
Application number
PCT/CN2020/122983
Other languages
English (en)
French (fr)
Inventor
韩文
Original Assignee
武汉华星光电半导体显示技术有限公司
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 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US17/262,764 priority Critical patent/US20230251688A1/en
Publication of WO2022062014A1 publication Critical patent/WO2022062014A1/zh

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Classifications

    • 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
    • G06F1/1615Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1616Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • G06F1/1618Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position the display being foldable up to the back of the other housing with a single degree of freedom, e.g. by 360° rotation over the axis defined by the rear edge of the base enclosure
    • 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
    • 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
    • G06F1/1615Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
    • G06F1/1624Constructional 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
    • 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
    • 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
    • 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
    • H04M1/0235Slidable 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
    • H04M1/0237Sliding mechanism with one degree of freedom

Definitions

  • the present invention relates to the field of display, in particular to a display device.
  • Flexible screen mobile phones refer to mobile phones with bendable and flexible screens.
  • flexible screens have obvious advantages, not only in terms of volume and thinness, but also in terms of power consumption. It is lower than the original device, which helps to improve the battery life of the device.
  • its durability is also much higher than that of the previous screen, reducing the probability of accidental damage to the device.
  • the connecting components to realize the folding that is, the design of the connecting shaft at the bend is also the biggest technical problem.
  • Most of the opening methods of the existing flexible screens are outward folding and inward folding.
  • the purpose of the present invention is to solve the technical problems that the flexible screen has a single opening method and poor folding effect in the prior art flexible display device.
  • the present invention provides a display device, comprising: a flexible display screen; and a curling device installed in the flexible display screen; wherein, the flexible display screen includes a metal plate, all or part of the metal plate There is a pattern area, in which the metal plate can be curled; the part of the flexible display screen corresponding to the pattern area is completely wound on the curling device or partially wound on the curling device on the device.
  • the curling device is provided with an electromagnet structure; the metal plate has magnetism; after the flexible display screen is stretched, the electromagnet structure is energized to magnetically fix the metal plate.
  • the modulus of the pattern area is 0.2 MPa to 10 MPa.
  • the curling device includes: a support plate, including a first support plate and a second support plate, which are inserted in a staggered manner; a reel is arranged on a side of the first support plate away from the second support plate; The flexible display screen is wound on the reel and extends from the reel to the surface of the support plate; when the first support plate and the second support plate are fully engaged with each other, the flexible display screen has a first display surface; when the first support plate and the second support plate are unfolded from each other, the flexible display screen protrudes from the reel to form a second display surface.
  • the curling device further includes: a guide rail, which is vertically arranged with the reel; a sliding shaft, which is slidably installed on the guide rail; and a constant-force coil spring, which is installed on the sliding shaft, and one end is fixed to a fixing member .
  • the display device further comprises: a casing; the scroll shaft is installed in the casing and connected with the casing, the first support plate is fixed in the casing, and the second support plate is The plate is slidably arranged on the first support plate, and the guide rail is fixed on the side of the first support plate facing the casing or on the side of the casing facing the first support plate; the side shell is fixed on the side of the casing.
  • One side of the second support plate is away from the first support plate, and one side of the flexible display screen is fixed between the side shell and the second support plate.
  • the thickness of the metal plate is 0.02 mm to 5 mm.
  • the pattern pattern is provided with a plurality of openings; the openings in each row or row have the same shape.
  • the flexible display screen further includes: a substrate, which is arranged on the surface of the metal plate on the side away from the curling device; an adhesive layer, which is arranged between the substrate and the metal plate; and a stress layer, It is arranged on the surface of the substrate away from the adhesive layer.
  • one end of the force-bearing layer is curled and attached to the sliding shaft, and the other end is attached to the inner side wall of the side shell.
  • the technical effect of the present invention is that the flexible display screen is stretched and rolled by adopting the combination structure of the constant force coil spring and the sliding shaft. During this process, the flexible display screen is always in a tensioned state to ensure the flatness of its surface. , to ensure that it has a good display effect.
  • the stretching of the flexible display screen enables the display device to have a large effective display area, increases the applicable scene of the display device, and improves the utilization rate of the display device.
  • the display device in the rolled state has good portability.
  • the top of the flexible display is coated with a TPU material that can be replaced and repaired at any time, which fully protects the display device from external damage.
  • FIG. 1 is a top view of a display device according to an embodiment of the present invention in a rolled-up state
  • FIG. 2 is a side perspective view of the display device according to the embodiment of the present invention in a rolled-up state
  • FIG. 3 is a top view of the display device according to the embodiment of the present invention in a stretched state
  • FIG. 4 is a side perspective view of the flexible display screen according to the embodiment of the present invention in a stretched state
  • FIG. 5 is a side perspective view of the display device according to the embodiment of the present invention in a stretched state
  • FIG. 6 is a schematic diagram of a pattern pattern according to an embodiment of the present invention.
  • FIG. 7 is a structural diagram of a flexible display screen according to an embodiment of the present invention.
  • FIG. 8 is an exploded view of a display device according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of the crimping device according to the embodiment of the present invention when it is in a winding state
  • FIG. 10 is a schematic diagram of the crimping device according to the embodiment of the present invention in a stretched state.
  • scroll area 210, scroll area; 220, plane area; 230, first display surface; 240, second display surface;
  • Pattern pattern area
  • an embodiment of the present invention provides a display device including a casing 1, a flexible display screen 2 and a curling device 3, and the display device is an outwardly retractable flexible display device (out expandable display).
  • the casing 1 includes a rear casing 11 and a side casing 12 .
  • the casing 1 supports and protects the flexible display screen 2 and the curling device 3 from external friction and collision.
  • the rear case 11 includes a bottom 111 and a side wall 112 , the bottom 111 is a transparent case, the side wall 112 is a curved surface, and is arranged opposite to the side case 12 , and both ends of the side wall 112 are provided with a through hole, so The through holes are used for fixing the crimping device 3 .
  • the flexible display screen 2 is installed on the rear case 11 , and the flexible display screen 2 includes a scrolling area 210 and a flat area 220 .
  • the scrolling area 210 is a place where the display device can scroll and slide. It is a key part of the display device to switch between the stretched-unfolded state and the rolled-up state.
  • the sliding roll area 210 is set on a part of the display area on the back of the flexible display screen 2 by It is pulled to the front and displayed together with the flat area 220 to form a second display surface 240 to expand the display area of the flexible display screen 2 .
  • the flat area 220 is a general display screen, which is in a display state when the display device is in a stretched-unfolded state and a rolled-up state. In the rolled-up state, the front display screen is the first display surface 230 .
  • the flexible display screen 2 includes components such as a metal plate 21 , an adhesive layer 22 , a substrate 23 , a polarizing layer 24 and a stress layer 25 .
  • the metal plate 21 is made of metal materials such as SUS, Ni alloy, and the like, and has a thickness of 0.02 mm to 5 mm, and has good magnetic properties.
  • the part of the metal plate 21 corresponding to the plane area 220 is made of rigid material, and the part corresponding to the sliding area 210 is provided with a pattern pattern area 211 .
  • the surface of the flexible display screen 2 may be uneven, and some of the patterns 211 may be concave, because the metal plate 21 has good magnetic properties.
  • the modulus of the area where the pattern pattern area 211 is located is 0.2 MPa to 10 MPa, and the elastic elongation is high, and can participate in actions such as curling or unfolding support as a whole.
  • the pattern pattern area 211 is provided with a number of openings 2110.
  • the openings 2110 in each row or row have the same shape, and the openings 2110 in two adjacent rows or rows have different shapes.
  • the opening 2110, the opening 2110 of this design improves the elasticity and ductility of the pattern pattern area 211 to a greater extent, which is beneficial to the stretching and extension of the sliding area 210 of the flexible display screen 2 .
  • the pattern pattern region 211 can be disposed on the entire surface of the metal plate 21 , and its overall modulus is still 0.2 MPa to 10 MPa, and has good elastic elongation.
  • the substrate 23 is disposed above the metal plate 21, and the substrate 23 is a display panel, including thin film transistors, light-emitting layers and other components, wherein the array layer where the thin film transistors are located is a foldable array layer, that is, corresponding to the plane area 220 and the sliding roll area 210, which can realize the display function of the scroll area 210.
  • the adhesive layer 22 is disposed between the metal plate 21 and the substrate 23 , and has good adhesion, and bonds the metal plate 21 and the substrate 23 together.
  • the adhesive layer 22 is a laminated structure formed by stacking multiple layers of colloids, in order to ensure the smooth bonding between the metal plate 21 and the substrate 23 , and to ensure the display effect of the flexible display screen 2 .
  • the polarizing layer 24 is disposed on the upper surface of the substrate 23 , which has a good polarizing effect and further improves the display effect of the flexible display screen 2 .
  • the stress-bearing layer 25 is disposed on the upper surface of the polarizing layer 24 , and an optical adhesive layer may also be provided between the stress-bearing layer 25 and the polarizing layer 24 .
  • the length of the force-bearing layer 25 is greater than the length of each film layer below it, both ends of the force-bearing layer 25 protrude from the film layers below it, and one end of the force-bearing layer 25 is curled and fitted Or fixed to the curling device 3, the other end of which is attached or fixed to the inner side wall of the side shell 12, the force-bearing layer 25 is the top film layer of the flexible display screen 2, and plays a role of tightening and fixing the flexible display screen 2,
  • the force-bearing layer 25 has high hardness, and is made of an optical-grade stretch-resistant material, such as CPI or PET.
  • the stress-bearing layer 25 can reduce the phenomenon of peeling off in the flexible display screen 2 and prolong the service life of the flexible display screen 2 .
  • TPU Thermoplastic Urethane, thermoplastic polyurethane elastomer
  • TPU is composed of diisocyanate molecules such as diphenylmethane diisocyanate (MDI) or toluene diisocyanate (TDI) and Macromolecular polyol and low molecular polyol (chain extender) are polymerized by co-reaction and polymerization.
  • MDI diphenylmethane diisocyanate
  • TDI toluene diisocyanate
  • Macromolecular polyol and low molecular polyol (chain extender) are polymerized by co-reaction and polymerization.
  • TPU diphenylmethane diisocyanate
  • TDI toluene diisocyanate
  • a chain extender diisocyanates
  • MDI diphenylmethane diisocyanate
  • TDI toluene diisocyanate
  • MDI diphenylmethane diisocyanate
  • TDI toluene diisocyanate
  • TPU material has super elasticity and can protect the force-bearing layer 25 and the flexible display screen 2. At the same time, if it is damaged by the outside world, the TPU material can be directly torn off and replaced, which is convenient for replacement, maintenance and protection. .
  • the crimping device 3 includes a support plate 31 , a reel 32 , a guide rail 33 , a sliding shaft 34 , a constant-force coil spring 35 and a fixing member 36 .
  • the curling device 3 is the main curling component of the display device described in this embodiment.
  • the support plate 31 is installed in the cavity enclosed by the sliding area 210 of the flexible display screen 2.
  • the support plate 31 includes a first support plate 311 and a second support plate 312 arranged in a staggered manner.
  • the first support plate 311 is provided with a plurality of card slots, and the support pieces on the second support plate 312 can be clipped into the card slots and inserted in a staggered manner to form a dense support plate 31, which can effectively improve the support plate 31.
  • the electromagnet structure is energized, and the electromagnet structure is used to magnetically attract the metal plate 21 , so that in the process of stretching and curling, the metal plate 21 is magnetically fixed by the support plate 31 to ensure that the pattern pattern area 211 and the top of the metal plate 21 are ensured. Flatness of each film layer.
  • the first support plate 311 and the second support plate 312 are clamped to each other.
  • the sliding area 210 of the flexible display screen 2 is not displayed on the front, and the front display area is the first display surface 230 .
  • the first support plate 311 and the second support plate 312 are spread out from each other.
  • the sliding area 210 of the flexible display screen 2 is stretched to the front of the display screen and is also displayed.
  • the front display area For the second display surface 240 the second display surface 240 includes a flat area 220 and an extended sliding scroll area 210 .
  • the side shell 12 is fixed to the side of the second support plate 312 away from the first support plate 311 , and one side of the flexible display screen 2 is fixed between the side shell 12 and the second support plate 312 .
  • the reel 32 is installed on one end of the first support plate 311 and is arranged in close contact with the side wall 112 of the rear case 11 .
  • the length of the reel 32 is adapted to the length of the side wall 112 , and its two ends pass through the through holes at the two ends of the side wall 112 .
  • the side walls 112 are connected, and the flexible display screen 2 is wound on the reel 32 and extends from the reel 32 to the surface of the support plate 31 .
  • the shaft body of the reel 32 can be rotated to facilitate the scrolling of the panel in the sliding area 210 of the flexible display screen 2 and swipe.
  • the guide rail 33 is perpendicular to the reel 32 , one end of the guide rail 33 is fixed to one end of the first support plate 311 or fixed to the rear case 11 , and the other end of the guide rail 33 is fixed to a fixing member 36 .
  • the two guide rails 33 are arranged in parallel, and both ends of the fixing member 36 The two guide rails 33 are respectively fixed so that they can be arranged in parallel and can carry the sliding shafts 34 to slide.
  • the sliding shaft 34 is slidably installed on the two guide rails 33 , and the sliding and scrolling area 210 of the flexible display screen 2 can be driven to slide and scroll by the sliding of the sliding shaft 34 .
  • the constant-force coil spring 35 is installed on the sliding shaft 34, and one end thereof is fixed to the fixing member 36, and the fixing member 36 is installed on the inner side wall of the side shell 12.
  • the combination of the constant-force coil spring 35 and the sliding shaft 34 is used to realize the flexible display screen 2 There is always a pre-tightening force during the whole process of stretching and winding, which prevents the flexible display screen 2 from warping unevenly, so that it always sticks to the upper surface of the staggered support plates 31 .
  • the sliding area 210 is located in At the scroll shaft 32 and the back of the flexible display screen 2 , that is, at the rear case 11 , the sliding shaft 34 and the constant force coil spring 35 are both located at the fixing member 36 , and the constant force coil spring 35 is in a retracted state at this time.
  • One end of the constant force coil spring 35 is fixed to the fixing member 36 , and the other end slides along the guide rail 33 to the scroll shaft 32 along with the sliding shaft 34 to complete the stretching and unfolding of the sliding scroll area 210 of the flexible display screen 2 .
  • the electromagnet is energized, and the support plate 31 magnetically attracts the metal plate 21 to ensure the surface flatness of the pattern pattern 211 and the flexible display screen 2, and further ensure the display effect of the display device.
  • the combination structure of the constant force coil spring 35 and the sliding shaft 34 is adopted to realize the stretching and winding of the flexible display screen 2 .
  • a certain pre-tightening force and tension force are applied, the constant force coil spring 35 returns to the initial state during rewinding, automatically rewinds, and the flexible display screen 2 is always pulled during the rewinding process, actively compensating for the difference caused by the outward unfolding.
  • the difference in length during winding can avoid the phenomenon that the pattern pattern 211 and the flexible display screen 2 are warped and uneven.
  • the tension of the constant force coil spring 35 is adjusted according to the tension of the flexible display screen 2 when the reel 34 is slid and rolled.
  • the technical effect of the display device in this embodiment is that the flexible display screen is stretched and rolled up by adopting the combination structure of the constant force coil spring and the sliding shaft.
  • the flatness of its surface ensures that it has a good display effect.
  • the stretching of the flexible display screen enables the display device to have a large effective display area, increases the applicable scene of the display device, and improves the utilization rate of the display device.
  • the display device in the rolled state has good portability.
  • the top of the flexible display is coated with a TPU material that can be replaced and repaired at any time, which fully protects the display device from external damage.
  • a display device provided by the embodiments of the present invention has been described in detail above.
  • the principles and implementations of the present invention are described with specific examples herein.
  • the descriptions of the above embodiments are only used to help understand the technical solutions of the present invention. and its core idea; those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the corresponding
  • the essence of the technical solutions deviates from the scope of the technical solutions of the embodiments of the present invention.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Signal Processing (AREA)

Abstract

本发明公开了一种显示装置,包括柔性显示屏以及卷曲装置;所述柔性显示屏包括金属板,所述金属板全部或部分设有花纹图案区域,在所述花纹图案区域,所述金属板可卷曲;所述柔性显示屏对应设有花纹图案区域的部分全部卷绕于所述卷曲装置上或者部分卷绕于所述卷曲装置上。

Description

显示装置 技术领域
本发明涉及显示领域,特别涉及一种显示装置。
背景技术
柔性显示装置应用市场越来越受市场青睐,柔性屏手机是指采用可弯曲、柔韧性佳屏幕的手机,相较于传统屏幕,柔性屏幕优势明显,不仅在体积上更加轻薄,功耗上也低于原有器件,有助于提升设备的续航能力,同时基于其可弯曲、柔韧性佳的特性,其耐用程度也大大高于以往屏幕,降低设备意外损伤的概率。
要实现柔性屏折叠功能,除了屏幕本身之外,实现折叠的连接组件,即折弯处的连接轴设计亦是最大的技术难题。现有的柔性屏的打开方式大部分为外折及内折。
技术问题
本发明的目的在于,解决现有技术的柔性显示装置中柔性屏的打开方式单一、折叠效果不佳的技术问题。
技术解决方案
为实现上述目的,本发明提供一种显示装置,包括:柔性显示屏;以及卷曲装置,安装至所述柔性显示屏内;其中,所述柔性显示屏包括金属板,所述金属板全部或部分设有花纹图案区域,在所述花纹图案区域,所述金属板可卷曲;所述柔性显示屏对应设有花纹图案区域的部分全部卷绕于所述卷曲装置上或者部分卷绕于所述卷曲装置上。
进一步地,所述卷曲装置中设有电磁铁结构;所述金属板具有磁性;所述柔性显示屏被拉伸后,所述电磁铁结构通电,将所述金属板磁吸固定。
进一步地,所述花纹图案区域的模量为0.2兆帕~10兆帕。
进一步地,所述卷曲装置包括:支撑板,包括第一支撑板以及第二支撑板,相互交错插接;卷轴,设于所述第一支撑板远离所述第二支撑板的一侧;所述柔性显示屏卷绕于所述卷轴上并从所述卷轴延伸至所述支撑板的表面;当所述第一支撑板与所述第二支撑板相互完全接合时,所述柔性显示屏具有第一显示面;当所述第一支撑板与所述第二支撑板相互展开时,所述柔性显示屏从所述卷轴上伸出,形成有第二显示面。
进一步地,所述卷曲装置还包括:导轨,与所述卷轴垂直设置;滑轴,滑动安装至所述导轨;以及恒力卷簧,安装至所述滑轴上,且一端固定至一固定件。
进一步地,所述的显示装置,还包括:壳体;所述卷轴安装在所述壳体内且与所述壳体连接,所述第一支撑板固定在所述壳体内,所述第二支撑板可滑动的设置在所述第一支撑板上,所述导轨固定在所述第一支撑板朝向壳体的一侧或者固定在壳体朝向第一支撑板的一侧;侧壳,固定在所述第二支撑板远离所述第一支撑板的一侧,所述柔性显示屏的一侧固定在所述侧壳和所述第二支撑板之间。
进一步地,所述金属板的厚度为0.02毫米~5毫米。
进一步地,所述花纹图案上设有若干开孔;每一列或每一行的所述开孔的形状相同。
进一步地,所述柔性显示屏还包括:基板,设于所述金属板远离所述卷曲装置一侧的表面;胶层,设于所述基板与所述金属板之间;以及受力层,设于所述基板远离所述胶层一侧的表面。
进一步地,所述受力层的一端卷曲贴合至所述滑轴,另一端贴合至侧壳的内侧壁。
有益效果
本发明的技术效果在于,采用恒力卷簧与滑轴的结合结构,实现柔性显示屏的拉伸与收卷,在此过程中,柔性显示屏一直处于拉紧状态,保证其表面的平整性,确保其具有良好的显示效果。柔性显示屏的拉伸,使得显示装置具有大面积的有效显示区,增加显示装置的适用场景,提高显示装置的利用率,同时,收卷状态下的显示装置具有良好的便携性。在柔性显示屏的顶部涂布可随时更换维修的TPU材料,充分保护了显示装置,使其免受外界的损伤。
附图说明
图1为本发明实施例所述显示装置在收卷状态时的俯视图;
图2为本发明实施例所述显示装置在收卷状态时的侧面立体图;
图3为本发明实施例所述显示装置在拉伸状态时的俯视图;
图4为本发明实施例所述柔性显示屏在拉伸状态时的侧面立体图;
图5为本发明实施例所述显示装置在拉伸状态时的侧面立体图;
图6为本发明实施例所述花纹图案的示意图;
图7为本发明实施例所述柔性显示屏的结构图;
图8为本发明实施例所述显示装置的分解图;
图9为本发明实施例所述卷曲装置在收卷状态时的示意图;
图10为本发明实施例所述卷曲装置在拉伸状态时的示意图。
部分组件标识如下:
1、壳体;2、柔性显示屏;3、卷曲装置;
11、后壳;12、侧壳;
111、底部;112、侧壁;
210、滑卷区;220、平面区;230、第一显示面;240、第二显示面;
21、金属板;22、胶层;23、基板;24、偏光层;25、受力层;
211、花纹图案区域;
31、支撑板;32、卷轴;33、导轨;34、滑轴;35、恒力卷簧;36、固定件;
311、第一支撑板;312、第二支撑板。
本发明的实施方式
下面将结合本发明实施例中的附图,对本发明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发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开,下文中对特定例子的部件和设置进行描述。当然,它们仅仅为示例,并且目的不在于限制本发明。此外,本发明提供了的各种特定的工艺和材料的例子,但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
具体的,请参阅图1~图10,本发明实施例提供一种显示装置,包括壳体1、柔性显示屏2以及卷曲装置3,所述显示装置为向外伸缩式柔性显示装置(out expandable display)。
如图2所示,壳体1包括后壳11和侧壳12,壳体1起到支撑且保护柔性显示屏2和卷曲装置3的作用,防止其受到外界的摩擦以及碰撞。
如图8所示,后壳11包括底部111以及侧壁112,底部111为透明壳体,侧壁112为曲面,与侧壳12相对设置,侧壁112的两端各设有一通孔,所述通孔用以固定卷曲装置3。
如图3、图4所示,柔性显示屏2安装至后壳11上,柔性显示屏2包括滑卷区210以及平面区220,滑卷区210为所述显示装置可以进行卷动以及滑动的部分,为所述显示装置在拉伸展开状态与收卷状态之间切换的关键部分,在所述拉伸展开状态下,所述滑卷区210设于柔性显示屏2背面的一部分显示区被拉到正面,与平面区220一起显示,形成第二显示面240,扩大柔性显示屏2的显示面积。平面区220为一般的显示屏,在所述显示装置处于拉伸展开状态以及收卷状态时都处于显示状态,在收卷状态下,正面显示屏为第一显示面230。
如图7所示,柔性显示屏2包括金属板21、胶层22、基板23、偏光层24以及受力层25等组件。
金属板21的材质为SUS、Ni合金等金属材料,其厚度为0.02毫米~5毫米,具有良好的磁性。在本实施例中,金属板21与平面区220对应的部分为刚性材料,与滑卷区210对应的部分设有花纹图案区域211。在滑动以及卷动滑卷区210的过程中,会出现柔性显示屏2的表面不平整的现象,可能出现部分花纹图案211下凹的问题,因为金属板21具有良好的磁性,在卷曲装置3内与金属板21相对应处设有磁铁,能将金属板21牢牢吸住,使得金属板21保持平整,此时,金属板21能起到对柔性显示屏2整面支撑的作用,防止柔性显示屏2凹陷导致其显示效果不佳。
如图6所示,花纹图案区域211所在区域的模量为0.2兆帕~10兆帕,弹性延展率高,可以整体参与卷曲或展开支撑等动作。花纹图案区域211上设有若干开孔2110,每一列或每一行的开孔2110的形状相同,相邻两列或两行的开孔2110的形状不同,在本实施例中,花纹图案211上的开孔2110的形状有两种,一种开孔2110为闭环四边形,优选为菱形,另一种为连通式的四边形,即每两个相邻的四边形的夹角处连通,形成一个整列的开孔2110,这种设计的开孔2110更大程度上提高了花纹图案区域211的弹性以及延展性,有利于柔性显示屏2的滑卷区210的拉伸延展。
在其他实施例中,花纹图案区域211可整面设于金属板21上,其整体模量依旧是0.2兆帕~10兆帕,具有良好的弹性延展率。
基板23设于金属板21的上方,基板23为显示面板,包括薄膜晶体管、发光层等部件,其中,所述薄膜晶体管所在的阵列层为可折叠阵列层,即对应于平面区220以及滑卷区210,能实现滑卷区210的显示功能。
胶层22设于金属板21与基板23之间,具有良好的粘黏性,将金属板21与基板23粘结在一起。胶层22为多层胶体堆叠而成的叠层结构,为确保金属板21与基板23之间的平整粘结,保证柔性显示屏2的显示效果。
偏光层24设于基板23的上表面,起到良好的偏光效果,进一步提高柔性显示屏2的显示效果。
受力层25设于偏光层24的上表面,在受力层25与偏光层24之间还可设有光学胶层。
从纵向截面的角度来看,受力层25的长度大于其下方的各膜层的长度,受力层25的两端均突出于其下方的各膜层,受力层25的一端卷曲贴合或固定至卷曲装置3,其另一端贴合或固定至侧壳12的内侧壁,受力层25为柔性显示屏2的顶层膜层,对柔性显示屏2起到一个拉紧固定的作用,提高柔性显示屏2表面的平整度,受力层25具有较高的硬度,其材质为光学级的耐拉伸材料,可为CPI或PET等材料。受力层25能减少柔性显示屏2内的剥离脱落的现象,延长柔性显示屏2的使用寿命。
在受力层25的上表面亦可涂布一层TPU(Thermoplastic Urethane,热塑性聚氨酯弹性体)材料,TPU是由二苯甲烷二异氰酸酯(MDI)或甲苯二异氰酸酯(TDI)等二异氰酸酯类分子和大分子多元醇、低分子多元醇(扩链剂)共同反应聚合而成的高分子材料。它的分子结构是由二苯甲烷二异氰酸酯(MDI)或甲苯二异氰酸酯(TDI)和扩链剂反应得到的刚性嵌段以及二苯甲烷二异氰酸酯(MDI)或甲苯二异氰酸酯(TDI)等二异氰酸酯分子和大分子多元醇反应得到的柔性链段交替构成的。TPU材料具有超弹性,能起到对受力层25以及柔性显示屏2的保护作用,同时,若受到外界的损伤,则可以直接撕除所述TPU材料并更换此材料,方便进行更换维修保护。
如图5、图8所示,卷曲装置3包括支撑板31、卷轴32、导轨33、滑轴34、恒力卷簧35以及固定件36。卷曲装置3为本实施例所述显示装置的主要卷曲部件。
支撑板31安装至柔性显示屏2的滑卷区210所围成的空腔内,支撑板31包括交错插接设置的第一支撑板311以及第二支撑板312,所述交错插接设置指的是第一支撑板311上设有若干卡槽,第二支撑板312上的支撑片可卡接至所述卡槽内,相互交错插接,形成致密的支撑板31,有效提高支撑板31的支撑效果,在支撑板31内设有电磁铁结构(图未示),在柔性显示屏2被拉伸后,即第二支撑板312被拉开,与第一支撑板311相互展开时,所述电磁铁结构通电,所述电磁铁结构用以磁吸金属板21,使得在拉伸卷曲的过程中,金属板21被支撑板31磁吸固定,保证花纹图案区域211以及金属板21上方各膜层的平整性。
在收卷状态下,第一支撑板311与第二支撑板312相互卡接,此时柔性显示屏2的滑卷区210不在正面显示,此时正面显示区为第一显示面230。
在拉伸状态下,第一支撑板311与第二支撑板312相互展开,此时柔性显示屏2的滑卷区210被拉伸至显示屏的正面,也进行显示,此时,正面显示区为第二显示面240,第二显示面240包括平面区220以及被拉伸出来的滑卷区210。
侧壳12固定至第二支撑板312远离第一支撑板311的一侧,柔性显示屏2的一侧固定于侧壳12与第二支撑板312之间。
卷轴32安装至第一支撑板311的一端,且与后壳11的侧壁112贴合设置,卷轴32的长度与侧壁112的长度相适应,其两端通过侧壁112两端的通孔与侧壁112相连,柔性显示屏2卷绕于卷轴32上并从卷轴32延伸至支撑板31的表面,卷轴32的轴体可旋转,便于柔性显示屏2的滑卷区210的面板进行卷动和滑动。
导轨33与卷轴32垂直设置,其一端固定至第一支撑板311的一端或是固定至后壳11,其另一端固定至一固定件36,两条导轨33平行设置,固定件36的两端分别固定这两条导轨33,使其能保证平行设置,且能承载滑轴34进行滑动。
滑轴34滑动安装至两条导轨33,通过滑轴34的滑动,可带动柔性显示屏2的滑卷区210进行滑动以及卷动。
恒力卷簧35安装至滑轴34上,且其一端固定至固定件36,固定件36安装至侧壳12的内侧壁,采用恒力卷簧35与滑轴34的结合实现柔性显示屏2的拉伸与收卷,在整个过程中始终存在预紧力,避免柔性显示屏2上翘不平整,使其始终贴在交错设置的支撑板31的上表面。
如图1、图2、图9所示,当柔性显示屏2处于收卷状态时,从柔性显示屏2的正面来看,只有平面区220为有效显示区,此时,滑卷区210位于卷轴32处以及柔性显示屏2的背面,即后壳11处,滑轴34以及恒力卷簧35均位于固定件36处,此时恒力卷簧35处于收卷状态。
如图3、图4、图5、图10所示,当柔性显示屏2处于拉伸展开状态时,从柔性显示屏2的正面来看,除了平面区220为有效显示区外,部分滑卷区210内的柔性显示屏被拉伸至正面,一起作为有限显示区进行显示,此时,滑卷区210部分或全部被拉伸至正面,形成有效显示区,滑轴34和恒力卷簧35逐渐向卷轴32处靠近直至完全贴合至卷轴32,使得所述显示装置由普通的手机变为平板、电脑等大面积显示的显示装置。恒力卷簧35的一端被固定至固定件36上,其另一端跟着滑轴34一起顺着导轨33滑动至卷轴32处,完成柔性显示屏2的滑卷区210的拉伸展开。在完成拉伸后,所述电磁铁通电,支撑板31磁吸住金属板21,保证花纹图案211以及柔性显示屏2的表面平整性,进一步保证显示装置的显示效果。
采用恒力卷簧35与滑轴34的结合结构,实现柔性显示屏2的拉伸与收卷,在向外拉伸时,滑轴34与恒力卷簧35受拉,给柔性显示屏2施加了一定的预紧力与拉力,在收卷时恒力卷簧35恢复初始状态,自动收卷,且在收卷过程中柔性显示屏2一直受拉,主动补偿因向外展开产生的与收卷时的长度差异,避免花纹图案211以及柔性显示屏2出现上翘不平整的现象。
恒力卷簧35的拉力根据柔性显示屏2在卷轴34滑卷状态下完全拉平的张力调整,恒力卷簧35的拉力大于或等于柔性显示屏2拉平的张力。
本实施例所述显示装置的技术效果在于,采用恒力卷簧与滑轴的结合结构,实现柔性显示屏的拉伸与收卷,在此过程中,柔性显示屏一直处于拉紧状态,保证其表面的平整性,确保其具有良好的显示效果。柔性显示屏的拉伸,使得显示装置具有大面积的有效显示区,增加显示装置的适用场景,提高显示装置的利用率,同时,收卷状态下的显示装置具有良好的便携性。在柔性显示屏的顶部涂布可随时更换维修的TPU材料,充分保护了显示装置,使其免受外界的损伤。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
以上对本发明实施例所提供的一种显示装置进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的技术方案及其核心思想;本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例的技术方案的范围。

Claims (10)

  1. 一种显示装置,其包括:
    柔性显示屏;以及
    卷曲装置,安装至所述柔性显示屏内;
    其中,所述柔性显示屏包括金属板,所述金属板全部或部分设有花纹图案区域,在所述花纹图案区域,所述金属板可卷曲;
    所述柔性显示屏对应设有花纹图案区域的部分全部卷绕于所述卷曲装置上或者部分卷绕于所述卷曲装置上。
  2. 如权利要求1所述的显示装置,其中,
    所述卷曲装置中设有电磁铁结构;
    所述金属板具有磁性;
    所述柔性显示屏被拉伸后,所述电磁铁结构通电,将所述金属板磁吸固定。
  3. 如权利要求1所述的显示装置,其中,
    所述花纹图案区域的模量为0.2兆帕~10兆帕。
  4. 如权利要求1所述的显示装置,其中,所述卷曲装置包括:
    支撑板,包括第一支撑板以及第二支撑板,相互交错插接;
    卷轴,设于所述第一支撑板远离所述第二支撑板的一侧;所述柔性显示屏卷绕于所述卷轴上并从所述卷轴延伸至所述支撑板的表面;
    当所述第一支撑板与所述第二支撑板相互完全接合时,所述柔性显示屏具有第一显示面;当所述第一支撑板与所述第二支撑板相互展开时,所述柔性显示屏从所述卷轴上伸出,形成有第二显示面。
  5. 如权利要求4所述的显示装置,其中,所述卷曲装置还包括:
    导轨,与所述卷轴垂直设置;
    滑轴,滑动安装至所述导轨;以及
    恒力卷簧,安装至所述滑轴上,且一端固定至一固定件。
  6. 如权利要求5所述的显示装置,其还包括:
    壳体;所述卷轴安装在所述壳体内且与所述壳体连接,所述第一支撑板固定在所述壳体内,所述第二支撑板可滑动的设置在所述第一支撑板上,所述导轨固定在所述第一支撑板朝向壳体的一侧或者固定在壳体朝向第一支撑板的一侧;
    侧壳,固定在所述第二支撑板远离所述第一支撑板的一侧,所述柔性显示屏的一侧固定在所述侧壳和所述第二支撑板之间。
  7. 如权利要求1所述的显示装置,其中,
    所述金属板的厚度为0.02毫米~5毫米。
  8. 如权利要求1所述的显示装置,其中,
    所述花纹图案上设有若干开孔;
    每一列或每一行的所述开孔的形状相同。
  9. 如权利要求4所述的显示装置,其中,所述柔性显示屏还包括:
    基板,设于所述金属板远离所述卷曲装置一侧的表面;
    胶层,设于所述基板与所述金属板之间;以及
    受力层,设于所述基板远离所述胶层一侧的表面。
  10. 如权利要求9所述的显示装置,其中,
    所述受力层的一端卷曲贴合至所述滑轴,另一端贴合至侧壳的内侧壁。
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