CN114023199A - Rollable display device - Google Patents
Rollable display device Download PDFInfo
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- CN114023199A CN114023199A CN202111395272.2A CN202111395272A CN114023199A CN 114023199 A CN114023199 A CN 114023199A CN 202111395272 A CN202111395272 A CN 202111395272A CN 114023199 A CN114023199 A CN 114023199A
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- 238000004804 winding Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 11
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 8
- 230000002457 bidirectional effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 235000009537 plain noodles Nutrition 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
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Abstract
The invention discloses a rollable display device, which comprises a flexible display module, a scroll and a deformable support structure, wherein the deformable support structure comprises at least one deformable body and a deformable structure, the rollable display device comprises a rolled state and an unfolded state, the flexible display module and the deformable body are wound on the scroll in the rolled state, the flexible display module and the deformable body are unfolded in the axial direction perpendicular to the scroll in the unfolded state, the deformable body is deformed into a three-dimensional shape through the deformable structure, and the deformable body is in contact with one side of the flexible display module, which is far away from a light emergent surface, so as to support the flexible display module. Wherein, under the state of unfolding through the setting, flexible display module assembly and flexible body expand in step, and the flexible body warp through the deformation structure and be three-dimensional shape to provide great holding power for flexible display module assembly, strengthen the structural strength that flexible display module assembly expanded the part, be convenient for can curl display device's use.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a rollable display device.
Background
In the existing telescopic curled screen, there is a telescopic curled screen based on a wireless charging technology, and the wireless charging technology is applied to the curled screen. Specifically, in such a retractable, rollable screen that can be wirelessly charged, the wireless charging device is placed at the reel, hidden inside the reel. For example, a telescopic television box based on a rollable screen automatically extends or retracts a multi-stage telescopic rod by using a motor.
However, the existing telescopic type curling screen has the following problems: the problem of the support problem of wireless charging technique and flexible TV box all not involving screen middle part to the TV box is for example, and the back is stretched out to flexible screen, and the part that the area increases is under the condition that does not have the intermediate strut, and its structural strength is not enough, warp easily when the touch is pressed, has the problem of unable touch-control, influences the use of telescopic curled screen.
Disclosure of Invention
The invention provides a display device capable of being rolled, which supports a display module so as to facilitate the use of the display device capable of being rolled.
An embodiment of the invention provides a rollable display device, including
The flexible display module comprises a flexible display module, a scroll and a deformable support structure;
the deformable support structure comprises at least one deformable body and a deformation structure;
the rollable display device includes a rolled state and an unrolled state;
in the rolled state, the flexible display module and the deformable body are wound on the reel;
in the unfolded state, the flexible display module and the deformable body are unfolded along an axial direction perpendicular to the reel; the deformable body is deformed into a three-dimensional shape through the deformation structure, and the deformable body is in contact with one side of the flexible display module, which is far away from the light emergent surface, so as to support the flexible display module.
According to the rollable display device provided by the embodiment of the invention, the rollable display device is provided with the deformable support structure comprising at least one deformable body and the deformable structure, and the flexible display module and the deformable body are wound on the reel when the rollable display device is in a rolled state, so that the portability of the rollable display device is improved; under the expansion state, flexible display module assembly and flexible body expand along the axial direction of perpendicular to spool in step, in order to obtain great display screen, and simultaneously, the flexible body warp through the deformation structure and is three-dimensional shape, and deviate from the one side contact on play plain noodles with flexible display module assembly, thereby utilize the difficult nature of buckling of the flexible body that has three-dimensional shape, provide great holding power for flexible display module assembly, solve the technical problem that current flexible display module assembly expandes the part and lacks the mid-span support, strengthen the structural strength of flexible display module assembly expansion part, and then non-deformable when the touch is pressed, be convenient for can curl display device's use.
Drawings
Fig. 1 is a schematic structural diagram of a rollable display device in a rolled state according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a rollable display device in an unfolded state according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A' of FIG. 2;
fig. 4 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 5 is a schematic partial cross-sectional view of another rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 6 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 7 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to another embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a deformable body in a rolled state according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a deformable body according to an embodiment of the present invention when deformed;
fig. 10 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 11 is a schematic partial cross-sectional view illustrating a rollable display device in an unfolded state according to another embodiment of the present invention;
fig. 12 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 13 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to another embodiment of the present invention;
fig. 14 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 15 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to another embodiment of the present invention;
fig. 16 is a schematic partial cross-sectional view illustrating a rollable display device in an unfolded state according to an embodiment of the present invention;
fig. 17 is a schematic top view of a modified structure according to an embodiment of the present invention;
FIG. 18 is a schematic cross-sectional view taken along line B-B' of FIG. 17;
FIG. 19 is a schematic cross-sectional view taken along line C-C' of FIG. 17;
fig. 20 is a schematic top view of another modified structure provided in accordance with an embodiment of the present invention;
FIG. 21 is a schematic cross-sectional view taken along line D-D' of FIG. 20;
FIG. 22 is a schematic side view of a modified structure according to an embodiment of the present invention;
fig. 23 is a schematic top view of another modified structure provided in the embodiment of the present invention;
FIG. 24 is a schematic cross-sectional view taken along line E-E' of FIG. 23;
fig. 25 is a schematic structural diagram of a rollable display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a rollable display device according to an embodiment of the present invention in a rolled state, fig. 2 is a schematic structural diagram of a rollable display device according to an embodiment of the present invention in an unfolded state, fig. 3 is a schematic structural diagram of a cross section along a-a' direction of fig. 2, as shown in fig. 1 to 3, a rollable display device according to an embodiment of the present invention includes a flexible display module 10, a reel 11, and a deformable support structure 12, and the deformable support structure 12 includes at least one deformable body 13 and a deformable structure 14. The rollable display device comprises a rolled state in which the flexible display module 10 and the deformable body 13 are wound on the spool 11, and an unfolded state; in the unfolded state, the flexible display module 10 and the deformable body 13 are unfolded along the axial direction perpendicular to the winding shaft 11, the deformable body 13 is deformed into a three-dimensional shape through the deformation structure 14, and the deformable body 13 contacts with one side of the flexible display module 10 departing from the light emitting surface to support the flexible display module 10.
The rollable display device can be a mobile phone capable of changing the area of the display area, and can also be any electronic product having a display function and capable of changing the area of the display area, including but not limited to the following categories: the touch screen display system comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like, and the embodiment of the invention is not particularly limited in this respect.
The flexible display module 10 is a display screen of a rollable display device, and may be a display screen of a retractable mobile phone, or a display screen of a foldable tablet computer, for example.
The flexible display module 10 can be bent, and specifically can be a flexible OLED display screen, an LCD display screen, or electronic paper, and the flexible display module 10 can realize the transition of the rollable display device from the rolled state to the unfolded state.
For example, as shown in fig. 1-3, the rollable display device can include a housing 15, where the housing 15 can function to protect the flexible display module 10. The reel 11 is rotatably connected to the housing 15, one end of the flexible display module 10 is connected to the reel 11, and one end of the deformable body 13 is connected to the reel 11, wherein the flexible display module 10 and the deformable body 13 can be connected to the same reel 11, or can be connected to different reels 11, and fig. 1 and 2 only illustrate that the flexible display module 10 and the deformable body 13 are connected to different reels 11, which is not limited in the embodiments of the present invention.
Meanwhile, one end of the flexible display module 10 may be directly connected to the reel 11, or may be connected to the reel 11 through other components, and one end of the deformable body 13 may be directly connected to the reel 11, or may be connected to the reel 11 through other components, which may be set by those skilled in the art according to actual requirements.
With continued reference to fig. 1-3, the flexible display module 10 and the deformable body 13 are wound on the spool 11 in the rolled state of the rollable display device, thereby improving the portability of the rollable display device; but curling display device is under the expanded state, flexible display module assembly 10 and flexible body 13 expand along the axial direction of perpendicular to spool 11 in step, in order to obtain great display screen, simultaneously, flexible body 13 warp to three-dimensional shape through deformation structure 14, and with flexible display module assembly 10 deviate from the one side contact on the play plain noodles, wherein, thereby flexible body 13 warp to be difficult for buckling for three-dimensional shape, can provide great holding power for flexible display module assembly 10, strengthen its partial structural strength that expandes, and then non-deformable when the touch is pressed, but be convenient for curling display device's use.
In other embodiments, the deformable body 13 may be made of other materials with certain strength as long as the supporting function of the flexible display module 10 can be achieved, as long as the deformable body 13 is made of a hard material such as Stainless Steel (SUS), which can provide sufficient supporting force, and meanwhile, the Stainless Steel has an advantage of wear resistance, and can ensure a long service life.
It should be noted that, in order to make the drawings clearer, only the flexible display module 10 and the deformable body 13 are depicted in fig. 3, and it is understood that the rollable display device further includes other structures such as a reel 11, a housing 15 and a deformation structure 14, so as to implement the corresponding functions of the rollable display device.
In summary, the rollable display device provided by the embodiments of the invention is provided with the deformable support structure 12 including at least one deformable body 13 and the deformable structure 14, and the rollable display device is arranged in a rolled state, and the flexible display module 10 and the deformable body 13 are wound on the reel 11, so as to improve the portability of the rollable display device; under the expanded state, flexible display module assembly 10 and flexible body 13 expand along the axial direction of perpendicular to spool 11 in step, in order to obtain great display screen, simultaneously, flexible body 13 warp to three-dimensional shape through deformation structure 14, and with flexible display module assembly 10 deviate from the one side contact of play plain noodles, thereby utilize the difficult nature of buckling of flexible body 13 that has three-dimensional shape, provide great holding power for flexible display module assembly 10, solve the technical problem that current flexible display module assembly 10 expandes the part and lack the mid-span, strengthen flexible display module assembly 10 and expand partial structural strength, and then non-deformable when the touch is pressed, be convenient for can curl display device's use.
With continued reference to fig. 3, optionally, in the unfolded state, the deformable body 13 includes a concave surface 131 and a convex surface 132 that are oppositely disposed, where the concave surface 131 faces the flexible display module 10 or the convex surface 132 faces the flexible display module 10.
For example, as shown in fig. 3, after passing through the deforming structure 14, the deformable body 13 deforms into a three-dimensional shape, which includes a concave surface 131 and a convex surface 132 opposite to each other, so as to be not easily bent, so as to provide sufficient supporting force for the flexible display module 10.
As shown in fig. 3, the concave surface 131 of the deformable body 13 can face the flexible display module 10, so that the flexible display module 10 is not easily bent towards a side away from the light exit surface, and a certain bending strength is provided for the flexible display module 10.
Fig. 4 is a schematic partial cross-sectional view of the rollable display device in an unfolded state according to an embodiment of the present invention, as shown in fig. 4, for example, a convex surface 132 of the deformable body 13 may be disposed to face the flexible display module 10, so that the flexible display module 10 is not easily bent towards a light-emitting surface side, so as to provide a certain bending strength to the flexible display module 10.
It should be noted that fig. 3 and fig. 4 only take the cross section of the deformable body 13 as an arc shape as an example, and are not limited thereto, and in other embodiments, the deformable body 13 may be deformed into other three-dimensional shapes when being unfolded, for example, fig. 5 is a schematic partial sectional structure of another rollable display device provided by the embodiment of the invention in an unfolded state, fig. 6 is a schematic partial sectional structure of still another rollable display device provided by the embodiment of the invention in an unfolded state, fig. 7 is a schematic partial sectional structure of still another rollable display device provided by the embodiment of the invention in an unfolded state, as shown in fig. 5-7, the cross section of the deformable body 13 may also be rectangular (exemplarily shown in fig. 5), triangular (exemplarily shown in fig. 6), or trapezoidal (exemplarily shown in fig. 7), as long as a certain bending strength can be provided for the flexible display module 10, the setting can be carried out by the person skilled in the art according to the actual requirements.
Fig. 8 is a schematic cross-sectional structure diagram of a deformable body provided in an embodiment of the present invention in a curled state, and fig. 9 is a schematic structural principle diagram of a deformable body provided in an embodiment of the present invention when deformed, as shown in fig. 8 and fig. 9, alternatively, in an unfolded state, a cross-section of the deformable body 13 is arc-shaped, and a cross-sectional arc of the deformable body 13 in the curled state is smaller than a cross-sectional arc of the deformable body 13 in the unfolded state.
Illustratively, as shown in fig. 8 and 9, in the unfolded state, the deformable body 13 may be provided with an arc-shaped cross section, and compared with other folded shapes, the deformable body 13 with the arc-shaped cross section can provide enough supporting force and is easier to realize, and the deformable body 13 with the arc-shaped cross section is easier to restore to the shape before deformation.
The specific shape of the arc may be set according to actual requirements, for example, the arc is parabolic, and the like, which is not limited in the embodiment of the present invention.
Further, as shown in fig. 8 and 9, the cross-sectional curvature of the deformable body 13 in the rolled state is smaller than that of the deformable body 13 in the unrolled state, thereby facilitating the winding on the spool 11, contributing to a reduction in the occupied space, and improving the portability of the rollable display device.
Illustratively, as shown in fig. 8 and 9, the cross section of the deformable body 13 in the rolled state is a straight line, i.e. the deformable body 13 is flat, so as to be more conveniently wound on the reel 11, further reducing the occupied space and improving the portability of the rollable display device, and the cross section is deformed into an arc shape after being unfolded, thereby providing a supporting force for the flexible display module 10.
It should be noted that the cross section of the deformable body 13 in the rolled state is a straight line, which is only an example, and is not limited thereto, and in other embodiments, the cross section of the deformable body 13 in the rolled state may also be a slightly curved arc, as long as the cross section arc of the deformable body 13 in the rolled state is smaller than the cross section arc of the deformable body 13 in the unfolded state, which is not limited by the embodiment of the present invention.
It should be noted that the cross section of the deformable body 13 described in this application refers to a cross section of the deformable body 13 along a direction perpendicular to the unfolding direction thereof (e.g., a-a' direction in fig. 2), and details thereof are not repeated later.
Fig. 10 is a schematic partial cross-sectional view of a rollable display device in an unfolded state according to an embodiment of the present invention, as shown in fig. 10, and optionally, the central angle of the arc is θ 1, where θ 1 is greater than 180 °.
Exemplarily, as shown in fig. 10, by setting the central angle θ 1 of the arc to be greater than 180 °, the flexible display module 10 is not easily bent toward a side away from the light exit surface, and is also not easily bent toward a side of the light exit surface, so as to provide the flexible display module 10 with a bidirectional bending strength.
For example, fig. 11 is a schematic partial sectional structure diagram of another rollable display device provided in an embodiment of the present invention in an unfolded state, and as shown in fig. 11, the arc-shaped central angle θ 1 may also be set to be greater than 360 ° to form a cylinder similar to an egg roll, so as to provide a stronger two-way bending strength for the flexible display module 10.
It is understood that, when the central angle θ 1 of the arc is smaller, the deformation of the deformable body 13 is more easily achieved, and the deformable body 13 is more easily restored to the shape before the deformation; and when the central angle θ 1 of the arc is larger, a stronger bidirectional bending strength can be provided for the flexible display module 10, and the technical personnel in the field can set the flexible display module according to actual requirements.
It should be noted that, as shown in fig. 10, the central angle in the present application refers to an angle formed by radii passing through two ends of an arc, and details of this are not described later.
With continued reference to fig. 3, 5-7, and 10, optionally, in the expanded state, the concave surface 131 of the deformable body 13 faces the flexible display module 10.
As shown in fig. 3, 5-7 and 10, in the present embodiment, by disposing the concave surface 131 of the deformable body 13 facing the flexible display module 10 (at this time, the cross-sectional shape of the deformable body 13 is U-shaped), the contact points between the deformable body 13 and the flexible display module 10 are more, the supporting uniformity is better, and the rollable display device that is bent outward (the side that is away from the light-emitting surface of the rollable display device is curled) has better supporting performance.
Fig. 12 is a partial cross-sectional structural schematic view of a rollable display device according to an embodiment of the invention in an expanded state, as shown in fig. 12, optionally, the at least one deformable body 13 includes at least one first deformable body 16 and at least one second deformable body 17, in the expanded state, a concave surface 131 of the first deformable body 16 faces the flexible display module 10, and a concave surface 131 of the second deformable body 17 faces away from the flexible display module 10.
For example, as shown in fig. 12, in the present embodiment, at least one first deformable body 16 and at least one second deformable body 17 are disposed to support the flexible display module 10, wherein in the unfolded state, the concave surface 131 of the first deformable body 16 faces the flexible display module 10, so that the flexible display module 10 is not easily bent toward the side away from the light exit surface; the concave surface 131 of the second deformable body 17 deviates from the flexible display module 10, so that the flexible display module 10 is not easy to bend towards one side of the light emitting surface, thereby providing the flexible display module 10 with a bidirectional bending strength.
With continued reference to FIGS. 4, 5, and 12, optionally, the arc has a central angle θ 2, wherein θ 2 ≦ 180.
As shown in fig. 4, 5, and 12, in the present embodiment, by setting the central angle θ 1 of the arc to be less than or equal to 180 °, the deformation of the deformable body 13 is more easily achieved, and at the same time, the deformable body 13 is more easily restored to the shape before the deformation, which contributes to the extension of the service life of the deformable body 13. Moreover, the arc central angle θ 1 is less than or equal to 180 °, which also reduces the space occupied by the deformable body 13 when it is unfolded, and contributes to the realization of the light and thin design of the rollable display device.
Fig. 13 is a partial cross-sectional structural view of a further rollable display device according to an embodiment of the present invention in a rolled state, fig. 14 is a partial cross-sectional structural view of a further rollable display device according to an embodiment of the present invention in a rolled state, fig. 15 is a partial cross-sectional structural view of a further rollable display device according to an embodiment of the present invention in a rolled state, fig. 16 is a partial cross-sectional structural view of a further rollable display device according to an embodiment of the present invention in a rolled state, as shown in fig. 2 and 13-16, and optionally, in a rolled state, the first deformable bodies 16 and the second deformable bodies 17 are alternately arranged along the axial direction X of the spool 11.
For example, as shown in fig. 2 and fig. 13 to 16, in the present embodiment, by arranging the first deformable bodies 16 and the second deformable bodies 17 alternately in the axial direction X of the winding shaft 11, the uniformity of the two-way bending strength provided by the first deformable bodies 16 and the second deformable bodies 17 to the flexible display module 10 can be improved, so as to achieve better supporting performance.
Wherein, as shown in fig. 13 and 14, a single first deformable body 16 and a single second deformable body 17 may be provided alternately arranged along the axial direction X of the spool 11.
In another embodiment, as shown in fig. 15 and 16, it is also possible to provide two first deformable bodies 16 and two second deformable bodies 17 arranged alternately in the axial direction X of the spool 11.
In other embodiments, a plurality of first deformable bodies 16 and a plurality of second deformable bodies 17 may be arranged alternately along the axial direction X of the winding shaft 11, which is not limited in the embodiments of the present invention as long as the uniformity of the two-way bending strength provided by the first deformable bodies 16 and the second deformable bodies 17 to the flexible display module 10 can be improved.
With continued reference to fig. 2, 9, 13, and 14, optionally, the sum of the number of the first deformable bodies 16 and the second deformable bodies 17 is an odd number, and the first deformable bodies 16 and the second deformable bodies 17 are symmetrically disposed about a central axis 18 of the flexible display module 10, wherein the central axis 18 of the flexible display module 10 is perpendicular to the axial direction X of the scroll 11.
Illustratively, as shown in fig. 2, 9, 13 and 14, in the present embodiment, by setting the sum of the numbers of the first deformable body 16 and the second deformable body 17 to be an odd number, and symmetrically setting the first deformable body 16 and the second deformable body 17 with respect to the central axis 18 of the flexible display module 10, the first deformable body 16 and the second deformable body 17 provide a symmetric bidirectional bending strength to the flexible display module 10, thereby achieving a better supporting performance.
It should be noted that, in fig. 13 and 14, only a single first deformable body 16 and a single second deformable body 17 are arranged alternately along the axial direction X of the scroll 11, in other embodiments, for example, as shown in fig. 15 and 16, at least two first deformable bodies 16 and at least two second deformable bodies 17 may also be arranged alternately along the axial direction X of the scroll 11, and the first deformable bodies 16 and the second deformable bodies 17 are arranged symmetrically with respect to the central axis of the flexible display module 10, so that the first deformable bodies 16 and the second deformable bodies 17 can provide a symmetric bidirectional bending strength for the flexible display module 10, thereby achieving a better supporting performance. It is understood that when an even number of the first deformable bodies 16 and an even number of the second deformable bodies 17 are alternately arranged in the axial direction X of the spool 11, the sum of the numbers of the first deformable bodies 16 and the second deformable bodies 17 may be an even number.
It should be noted that, in the present application, the number of the deformable bodies 13 is not limited to the number drawn in the drawings, and in practical cases, a person skilled in the art may set the number of the deformable bodies 13 according to the area of the flexible display module 10, which is not limited by the embodiment of the present invention.
With continued reference to fig. 13 and 16, optionally, a second deformable body 17 is located between two adjacent first deformable bodies 16.
For example, as shown in fig. 13 and 16, in the present embodiment, by disposing the second deformable body 17 between two adjacent first deformable bodies 16, in the axial direction X along the spool 11, the first deformable body 16 is located on the outermost side, and the second deformable body 17 is prevented from being located on the outermost side, so that the second deformable body 17 is prevented from scratching the structure of the side of the second deformable body 17 away from the flexible display module 10 when the second deformable body 17 is located on the outermost side, and the structure of the side of the second deformable body 17 away from the flexible display module 10 is protected.
Fig. 17 is a schematic top view, fig. 18 is a schematic cross-sectional structure of fig. 17 along a direction B-B ', fig. 19 is a schematic cross-sectional structure of fig. 17 along a direction C-C', and as shown in fig. 17-19, optionally, the deformable structure 14 includes a limiting opening 141 corresponding to the deformable body 13, the deformable body 13 passes through the corresponding limiting opening 141, the limiting opening 141 includes a first end 1411 and a second end 1412 which are oppositely disposed, a cross-sectional shape of the limiting opening 141 at the second end 1412 corresponds to a cross-sectional shape of a three-dimensional shape, and when the rollable display device is transformed from the rolled state to the unfolded state, the deformable body 13 moves from the first end 1411 to the second end 1412 to be deformed into the three-dimensional shape.
For example, as shown in fig. 17-19, the deformable body 13 is provided with a limit opening 141, and when the rollable display device is transformed from the rolled state to the unfolded state, the deformable body 13 moves from the first end 1411 of the limit opening 141 to the second end 1412, wherein the cross-sectional shape of the limit opening 141 at the second end 1412 corresponds to the cross-sectional shape of the three-dimensional shape, so that during the process of moving the deformable body 13 from the first end 1411 of the limit opening 141 to the second end 1412, the deformable body 13 is pressed by the limit opening 141 and is rolled into the three-dimensional shape at the second end 1412 of the limit opening 141, thereby providing a large supporting force to the flexible display module 10.
It should be noted that the cross-sectional shape of the restriction opening 141 at the second end 1412 corresponds to the cross-sectional shape of the three-dimensional shape, which means that the cross-sectional shape of at least a portion of the sidewall of the restriction opening 141 is consistent with the cross-sectional shape of the three-dimensional shape, for example, as shown in fig. 18 and 19, the cross-section of the bottom sidewall of the restriction opening 141 is arc-shaped, so that the deformable body 13 is pressed by the restriction opening 141 and curled into an arc shape at the second end 1412 of the restriction opening 141 during the movement from the first end 1411 to the second end 1412 of the restriction opening 141.
With continued reference to fig. 17-19, optionally, the cross-sectional shape of the restriction opening 141 at the first end 1411 is the same as the cross-sectional shape of the restriction opening 141 at the second end 1412.
As shown in fig. 17-19, in the present embodiment, the cross-sectional shape of the position-limiting opening 141 at the first end 1411 is the same as the cross-sectional shape of the position-limiting opening 141 at the second end 1412, so that the position-limiting opening 141 is simple in design and easy to implement.
It should be noted that the cross-sectional shape of the restraint opening 141 at the first end 1411 is not limited to being the same as the cross-sectional shape of the restraint opening 141 at the second end 1412, and in other embodiments, it may be provided that the cross-sectional shape of the restraint opening 141 at the first end 1411 is not limited to being different than the cross-sectional shape of the restraint opening 141 at the second end 1412.
Fig. 20 is a schematic top view, fig. 21 is a schematic cross-sectional view along the direction D-D' in fig. 20, and fig. 22 is a schematic side view of a deformed structure provided in an embodiment of the present invention, as shown in fig. 20-22, optionally, a cross-sectional shape of the limiting opening 141 at the first end 1411 is set corresponding to a cross-sectional shape of the deformable body 13 in a curled state.
For example, as shown in fig. 20 to 22, in the present embodiment, by arranging the cross-sectional shape of the position-limiting opening 141 at the first end 1411 to correspond to the cross-sectional shape of the deformable body 13 in the curled state, and arranging the cross-sectional shape of the position-limiting opening 141 at the second end 1412 to correspond to the cross-sectional shape of the three-dimensional shape, the position-limiting opening 141 guides the deformable body 13, so that the deformable body 13 gradually curls into the three-dimensional shape from the shape in the curled state in the process of moving from the first end 1411 to the second end 1412 of the position-limiting opening 141, which helps to reduce the probability of damage to the deformable body 13.
With continued reference to fig. 20-22, optionally, the inner wall of the limit opening 141 is curved.
The inner wall of the limit opening 141 is a curved surface, so that the inner wall of the limit opening 141 changes gradually and smoothly, and the limit opening 141 plays a role of smoothly guiding the deformable body 13, and the deformable body 13 gradually curls from a flat shape to a three-dimensional shape along the inner wall of the limit opening 141 in the process of moving from the first end 1411 to the second end 1412 of the limit opening 141, so as to further reduce the probability of damage to the deformable body 13.
Further, the deformable structure 14 may be made of a wear-resistant material such as stainless steel or ceramic, so as to reduce the wear of the deformable body 13 on the deformable structure 14 during the movement from the first end 1411 to the second end 1412 of the limiting opening 141, and ensure that the deformable structure 14 has a long service life, but not limited thereto, and those skilled in the art may set the material of the deformable structure 14 according to actual needs.
Further, a separate deformation structure 14 may be provided for each deformable body 13, and a limit opening 141 may be provided for each deformation structure 14.
In other embodiments, only one deformation structure 14 may be provided, and the deformation structure 14 is provided with a plurality of limiting openings 141 corresponding to the deformable body 13, which is not limited in the embodiments of the present invention.
Alternatively, as shown in fig. 17-22, the limiting opening 141 may be configured as a limiting groove structure on the deformable structure 14 to reduce the difficulty of manufacturing the deformable structure 14.
Fig. 23 is a schematic top view of another modified structure provided in an embodiment of the present invention, fig. 24 is a schematic cross-sectional view along the direction E-E' in fig. 23, as shown in fig. 23 and fig. 24, optionally, the limiting opening 141 may also be configured as a limiting hole structure on the modified structure 14, so as to increase the structural strength of the modified structure 14 and prolong the service life.
The thickness of the deformable body 13 may be set according to actual requirements, for example, taking Stainless Steel (SUS) as an example of the deformable body 13, the thickness of the deformable body 13 may be set within 150 μm or 150 μm, and the thickness of the deformable body 13 may be further set within 100 μm or 100 μm, so that the deformable body 13 is easily bent and deformed into a three-dimensional structure.
Meanwhile, the thickness of the deformable body 13 can be set to be more than 20 μm or 20 μm, and further the thickness of the deformable body 13 can be set to be more than 30 μm or 30 μm to provide sufficient supporting force, and the difficulty in manufacturing is not increased because the thickness of stainless steel is too thin.
With continued reference to fig. 1 and 2, optionally, the flexible display module 10 includes a first fixed end 101 and a first free end 102 disposed opposite to each other, the first fixed end 101 is connected to the winding shaft 11, the deformable body 13 includes a second fixed end 133 and a second free end 134 disposed opposite to each other, the second fixed end 133 is connected to the winding shaft 11, and the first free end 102 is connected to the second free end 134.
Specifically, as shown in fig. 1 and fig. 2, the first fixed end 101 of the flexible display module 10 is connected to the reel 11, and the second fixed end 133 of the deformable body 13 is connected to the reel 11, in this embodiment, by connecting the first free end 102 of the flexible display module 10 and the second free end 134 of the deformable body 13, the flexible display module 10 and the deformable body 13 are synchronously wound on the reel 11 in the curled state of the rollable display device, thereby improving the portability of the rollable display device; in the unfolded state, the first free end 102 of the flexible display module 10 drives the second free end 134 of the deformable body 13 to be unfolded synchronously along the axial direction perpendicular to the reel 11, so as to obtain a larger display image.
The first free end 102 of the flexible display module 10 and the second free end 134 of the deformable body 13 can be connected by gluing or spot welding, which is not limited in the embodiment of the invention.
With continued reference to fig. 1 and 2, optionally, spool 11 includes a first spool 111 and a second spool 112; in the rolled state, the flexible display module 10 is wound on the first reel 111, and the deformable body 13 is wound on the second reel 112.
As shown in fig. 1 and 2, in the present embodiment, by arranging the flexible display module 10 and the deformable body 13 to be respectively wound on the first reel 111 and the second reel 112, compared with the case that the flexible display module 10 and the deformable body 13 are wound on the same reel, the deformable body 13 can be prevented from damaging the flexible display module 10 in a curled state, thereby contributing to prolonging the service life of the rollable display device.
It should be noted that, as shown in fig. 1 and fig. 2, the winding direction of the flexible display module 10 on the first winding shaft 111 and the winding direction of the deformable body 13 on the second winding shaft 112 may be the same.
Fig. 25 is a schematic structural diagram of a rollable display device according to an embodiment of the invention, and as shown in fig. 25, optionally, a winding direction of the flexible display module 10 on the first reel 111 may be different from a winding direction of the deformable body 13 on the second reel 112.
With continued reference to fig. 3-7 and 10-16, optionally, the flexible display module 10 includes a flexible display panel 19 and a support layer 20, which are stacked, and in the unfolded state, the support layer 20 is located on a side of the flexible display panel 19 close to the deformable body 13.
Specifically, as shown in fig. 3 to 7 and fig. 10 to 16, by providing the supporting layer 20 on the side of the flexible display panel 19 close to the deformable body 13, the flexible display panel 19 is supported, and meanwhile, the deformable body 13 is prevented from scratching the flexible display panel 19, so that the flexible display panel 19 is protected, which is beneficial to prolonging the service life of the rollable display device.
The supporting layer 20 may be made of a hard material such as Stainless Steel (SUS), so as to provide a sufficient supporting force, and meanwhile, the Stainless Steel has an advantage of wear resistance, so as to prevent the supporting layer 20 from being scratched by the deformable body 13 and ensure a long service life.
Further, the thickness of the supporting layer 20 may also be set according to practical requirements, for example, taking Stainless Steel (SUS) as an example of the supporting layer 20, the thickness of the supporting layer 20 may be 30 μm to 80 μm, for example, about 50 μm, so as to achieve both curling and supporting performance, which is not limited in the embodiment of the invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (17)
1. A rollable display device, comprising
The flexible display module comprises a flexible display module, a scroll and a deformable support structure;
the deformable support structure comprises at least one deformable body and a deformation structure;
the rollable display device includes a rolled state and an unrolled state;
in the rolled state, the flexible display module and the deformable body are wound on the reel;
in the unfolded state, the flexible display module and the deformable body are unfolded along an axial direction perpendicular to the reel; the deformable body is deformed into a three-dimensional shape through the deformation structure, and the deformable body is in contact with one side of the flexible display module, which is far away from the light emergent surface, so as to support the flexible display module.
2. A rollable display device according to claim 1,
under the expansion state, but the deformable body includes relative concave surface and the convex surface that sets up, the concave surface orientation flexible display module assembly or the convex surface orientation flexible display module assembly.
3. A rollable display device according to claim 2,
in the deployed state, a cross-section of the deformable body is arc-shaped, and a cross-sectional arc of the deformable body in the crimped state is smaller than a cross-sectional arc of the deformable body in the deployed state.
4. A rollable display device according to claim 3,
the central angle of the arc is theta 1, wherein theta 1 is more than 180 degrees.
5. A rollable display device according to claim 4,
in the unfolded state, the concave surface of the deformable body faces the flexible display module.
6. A rollable display device according to claim 3,
at least one of the deformable bodies comprises at least one first deformable body and at least one second deformable body;
in the unfolded state, the concave surface of the first deformable body faces the flexible display module, and the concave surface of the second deformable body faces away from the flexible display module.
7. A rollable display device according to claim 6,
the central angle of the arc is theta 2, wherein theta 2 is less than or equal to 180 degrees.
8. A rollable display device according to claim 6,
in the deployed state, the first deformable bodies and the second deformable bodies are alternately arranged in the axial direction of the spool.
9. A rollable display device according to claim 8,
the sum of the number of the first deformable bodies and the number of the second deformable bodies are odd, and the first deformable bodies and the second deformable bodies are symmetrically arranged around a central axis of the flexible display module;
the central axis of the flexible display module is perpendicular to the axial direction of the scroll.
10. A rollable display device according to claim 8,
the second deformable body is located between two adjacent first deformable bodies.
11. A rollable display device according to claim 1,
the deformable structure comprises a limiting opening which is arranged corresponding to the deformable body, and the deformable body penetrates through the corresponding limiting opening;
the limiting opening comprises a first end and a second end which are oppositely arranged, and the cross section shape of the limiting opening at the second end is arranged corresponding to the cross section shape of the three-dimensional shape;
when the rollable display device is transformed from the rolled state to the unfolded state, the deformable body moves from the first end to the second end to deform into the three-dimensional shape.
12. A rollable display device according to claim 11,
the cross-sectional shape of the stopper opening at the first end is the same as the cross-sectional shape of the stopper opening at the second end.
13. A rollable display device according to claim 11,
the cross-sectional shape of the stopper opening at the first end is disposed to correspond to the cross-sectional shape of the deformable body in the crimped state.
14. A rollable display device according to claim 13,
the inner wall of the limiting opening is a curved surface.
15. A rollable display device according to claim 1,
the flexible display module comprises a first fixed end and a first free end which are oppositely arranged, and the first fixed end is connected with the scroll;
the deformable body comprises a second fixed end and a second free end which are oppositely arranged, and the second fixed end is connected with the reel;
the first free end is connected with the second free end.
16. A rollable display device according to claim 1,
the reel comprises a first reel and a second reel;
in the rolled state, the flexible display module is wound on the first reel, and the deformable body is wound on the second reel.
17. A rollable display device according to claim 1,
the flexible display module comprises a flexible display panel and a supporting layer which are stacked, and the supporting layer is positioned on one side, close to the deformable body, of the flexible display panel in the unfolded state.
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| CN202111395272.2A CN114023199B (en) | 2021-11-23 | 2021-11-23 | Rollable display device |
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| CN202111395272.2A CN114023199B (en) | 2021-11-23 | 2021-11-23 | Rollable display device |
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