CN114283690A

CN114283690A - Display device

Info

Publication number: CN114283690A
Application number: CN202111664498.8A
Authority: CN
Inventors: 杜江华
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-04-05
Anticipated expiration: 2041-12-31
Also published as: CN114283690B

Abstract

The application discloses a display device, which relates to the field of display and comprises a display screen, a support body, a movable assembly and a scroll assembly, wherein the movable assembly is respectively connected with a first support body and a second support body in a sliding manner; comprises two working states, namely a contraction state and an expansion state; in a contraction state, the second support body and the movable assembly are contracted into the first cavity, the first support body supports the first display screen, and the second display screen is at least partially wound on the reel assembly; when the movable assembly is in the retracted state, the second support body and at least part of the movable assembly slide out of the first cavity, and the second display screen is unfolded; in the unfolded state, the first support supports the first display screen, and the second support supports the second display screen. The display device has two working states of contraction and expansion, and can meet the requirements of large-size display and portability of users.

Description

Display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a display device.

Background

Flexible screens have gained significant development in recent years as an important display screen technology. Compared with the conventional screen, the flexible screen has significant advantages, such as a thinner and lighter volume, lower power consumption, and is increasingly used in electronic devices due to its characteristics of flexibility, good flexibility, and the like.

With the demands of work and life, the requirements for electronic products are continuously increased, electronic devices such as mobile phones and flat panels are developing towards the direction of large screen size, and the existing planar electronic devices cannot meet the demands of people on space saving and portability. Therefore, it is an urgent technical problem to provide a display device having a contracted state and an expanded state to meet the requirements of large-size display and portability.

Disclosure of Invention

In view of this, the application provides a display device, has two kinds of operating condition of shrink and expansion, can satisfy the demand that user's jumbo size shows and portable, and when the expansion state, the display screen can be according to needs subregion or cooperation demonstration, when increasing display area, can also satisfy user's different demonstration demands.

The application provides a display device, including: the display screen, the supporting body, the movable assembly and the scroll assembly;

the display screen comprises a first display screen and a second display screen, and the second display screen is a flexible display screen;

the support body comprises a first support body and a second support body, and the scroll assembly is fixed at one end of the first support body; a first cavity is formed in one end, far away from the reel assembly, of the first supporting body; the movable assembly is respectively connected with the first support body and the second support body in a sliding manner;

the display device at least comprises two working states, namely a contraction state and an expansion state; in the retracted state, the second support body and the movable assembly are retracted into the first cavity, the first support body supports the first display screen, and at least part of the second display screen is wound onto the reel assembly; when the movable assembly and the second supporting body slide out of the first cavity from the contraction state to the expansion state, the second display screen expands; in the unfolded state, the first support supports the first display screen, and the second support supports the second display screen.

Compared with the related art, the display device provided by the application at least achieves the following beneficial effects:

the display device that this application embodiment provided that this application provided increases movable assembly between first supporter and second supporter, and under the shrink state, movable assembly and second supporter are all accomodate in the first cavity of first supporter, and first display screen normally shows, can also reduce this display device's volume, portable when satisfying normal demonstration demand. Under the expansion state, the movable assembly expands for first supporter, the second supporter expands for the movable assembly, first supporter and second supporter support first display screen and second display screen respectively, the support area of display screen below has been increased, reach better supporting effect, be favorable to improving the roughness of flexible second display screen, and first display screen and second display screen can be according to needs subregion or show in coordination, when increase display area, can also satisfy user's different demonstration demands.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a top view of a display device provided in an embodiment of the present application in an unfolded state;

fig. 2 is a top view of a display device in a contracted state according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view taken along AA' of FIG. 1;

FIG. 4 is a cross-sectional view taken along AA' of FIG. 2;

FIG. 5 shows a cross-sectional view of the first flap along BB' of FIG. 3;

FIG. 6 is another cross-sectional view taken along AA' of FIG. 1;

FIG. 7 is another cross-sectional view taken along AA' of FIG. 2;

fig. 8 shows a cross-sectional view of the second flap along CC' in fig. 6;

FIG. 9 is a further sectional view taken along AA' of FIG. 1;

FIG. 10 is a further sectional view taken along AA' of FIG. 2;

FIG. 11 is a sectional view of the third movable plate taken along line DD' of FIG. 9;

FIG. 12 is a further cross-sectional view taken along AA' of FIG. 1;

FIG. 13 is a further cross-sectional view taken along AA' of FIG. 2;

FIG. 14 is a cross-sectional view of the fourth flap taken along EE' of FIG. 12;

FIG. 15 shows another sectional view of the fourth flap taken along EE' of FIG. 12;

FIG. 16 is another top view of a display device according to an embodiment of the present application in an expanded state;

fig. 17 is another top view of a display device in a collapsed state according to an embodiment of the present application;

FIG. 18 is a cross-sectional view taken along FF' of FIG. 17;

fig. 19 is a schematic structural diagram of a guide rail provided in the embodiment of the present application;

fig. 20 is an exploded view of a first support and reel assembly provided in accordance with an embodiment of the present application.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. The same parts between the embodiments are not described in detail.

The following detailed description is to be read in connection with the drawings and the detailed description.

Fig. 1 is a top view of a display device according to an embodiment of the present invention in an expanded state, fig. 2 is a top view of the display device according to the embodiment of the present invention in a contracted state, fig. 3 is a cross-sectional view taken along AA 'in fig. 1, fig. 4 is a cross-sectional view taken along AA' in fig. 2, and referring to fig. 1 to 4, a display device 100 according to an embodiment of the present invention includes: the display screen 1, the support body 2, the movable assembly 3 and the scroll assembly 4;

the display screen 1 comprises a first display screen 11 and a second display screen 12, and the second display screen 12 is a flexible display screen;

the support body 2 comprises a first support body 21 and a second support body 22, and the scroll assembly 4 is fixed at one end of the first support body 21; one end of the first supporting body 21, which is far away from the reel assembly 4, is provided with a first cavity 211;

the movable assembly 3 is respectively connected with the first support body 21 and the second support body 22 in a sliding way;

the display device 100 comprises at least two working states, namely a contraction state and an expansion state; in the contracted state, the second supporting body 22 and the movable assembly 3 are contracted into the first cavity 211, the first supporting body 21 supports the first display screen 11, and at least part of the second display screen 12 is wound on the reel assembly 4; when the movable assembly 3 and at least part of the second supporting body 22 slide out of the first cavity 211 from the contraction state to the expansion state, the second display screen 12 is expanded; in the unfolded state, the first support 21 supports the first display 11, and the second support 22 supports the second display 12.

Specifically, referring to fig. 1 to 4, in the embodiment of the present application, the display device 100 includes two working states of being contracted and expanded, the display device 100 includes a display screen 1, a support body 2, a movable assembly 3 and a reel assembly 4, where the display screen 1 includes a first display screen 11 and a second display screen 12, the support body 2 includes a first support body 21 and a second support body 22, the first support body 21 includes a first cavity 211, the movable assembly 3 is located in the first cavity 211, and the movable assembly 3 is slidably connected to the first support body 21 and the second support body 22 respectively, so that the movable assembly 3 and the second support body 22 can be contracted into the first cavity 211 or expanded out of the first cavity 211, thereby realizing the contraction or expansion of the display screen 1.

Referring to fig. 2 and 4, the reel assembly 4 is fixed to one end of the first supporting body 21, the second display 12 is a flexible display, and in a contracted state, the second supporting body 22 and the movable assembly 3 are contracted into the first cavity 211, and the second flexible display is wound on the reel assembly 4, so that the size of the display device 100 can be reduced, and the display device is convenient to carry. When in the retracted state, the first supporting body 21 is located on a side of the first display 11 away from the light exit surface, and the first supporting body 21 can perform a good supporting function on the first display 11, so that even in the retracted state, the first display 11 can be used for displaying images.

When the movable assembly 3 is moved from the retracted state to the extended state, the inner sidewall 212 of the first support 21 slides to a side away from the reel assembly 4, so that at least a portion of the movable assembly 3 is located outside the first cavity 211, and the second support 22 slides to a side away from the first support 21 relative to the movable assembly 3, so that the first support 21, the movable assembly 3, and the second support 22 are all extended. During the unwinding of the display device 100, the second display 12 rotates with the reel assembly 4, causing the second display 12 to unwind. Referring to fig. 1 and 3, in the unfolded state in which the movable assembly 3 is unfolded with respect to the first support 21 and the second support 22 is unfolded with respect to the movable assembly 3, the display area of the display screen 1 in the unfolded state is further increased as compared to the display device 100 provided with only the first support 21 and the second support 22. For example, assuming that the surface areas of the first support 21, the movable assembly 3, and the second support 22 are substantially the same, and the display device 100 provided with only the first support 21 and the second support 22 has a display area in the expanded state that is 2 times as large as that in the contracted state, the present application provides the display device 100 provided with the first support 21, the movable assembly 3, and the second support 22 having a display area in the expanded state that is 3 times as large as that in the contracted state, and thus it is seen that the display area in the expanded state is significantly increased.

With continued reference to fig. 1 and fig. 3, in the expanded state, both the first display screen 11 and the second display screen 12 may be used for image display, and the first display screen 11 and the second display screen 12 may perform partition display as required, or perform cooperative work between the two to realize overall image display. Under the expansion state, first supporter 21 and second supporter 22 support first display screen 11 and second display screen 12 respectively, when increase display area, have still increased the support area of display screen 1 below, reach better supporting effect, when satisfying the large-size screen demand, still be favorable to improving the roughness of flexible second display screen 12 to improve display effect.

When the movable assembly 3 and the second support 22 slide from the contracted state to the expanded state or from the expanded state to the contracted state, the relative movement of the first support 21, the movable assembly 3 and the second support 22 is realized, so that the use is flexible, and the operation is simple.

It should be noted that fig. 1-4 are only for schematically illustrating that the display device 100 can operate in two different states of being retracted and extended, and do not represent the actual sizes of the display screen 1, the supporting body 2, the movable assembly 3 and the reel assembly 4 in the display device 100, nor represent the actual connection manner between the components. Since the movable assembly 3 is located in the first cavity 211 of the first support 21 in the contracted state in the plan view, the movable assembly 3 is indicated by a dotted line in fig. 2 in order to illustrate the positional structure of the movable assembly 3. Further, the reel assembly 4 may be located in the first cavity 211 of the first support body 21, and therefore, in fig. 1 and 2, the reel assembly 4 is also indicated by a dotted line.

In fig. 3 and 4, the movable assembly 3 is connected to the supporting body 2 by a guide rail, but the connection is only for schematically illustrating the sliding connection between the movable assembly 3 and the supporting body 2, and does not represent the connection manner between the movable assembly 3 and the supporting body 2, and other connection manners, such as a structure that can realize the sliding connection, for example, a thread, may be further provided between the movable assembly 3 and the supporting body 2, and this is not particularly limited in this application.

In this embodiment, the first supporting body 21 and the second supporting body 22 are both rigid structures, and the material thereof may be any material known to those skilled in the art that can realize the rigid structures thereof. The first display screen 11 may be a rigid screen or a flexible screen, and may be specifically selected according to actual needs, which is not limited in this application.

Alternatively, fig. 5 is a cross-sectional view of the first flap 31 along BB' in fig. 3, referring to fig. 1 and fig. 3-5, the movable assembly 3 includes the first flap 31, the first flap 31 is provided with a first guide rail 311, the first guide rail 311 extends in the same direction as the first direction, and the first guide rail 311 penetrates through the first flap 31 along the second direction; a first convex column 213 is arranged on the inner side wall 212 of the first supporting body 21, and at least part of the first convex column 213 is embedded in the first guide rail 311; the outer sidewall 221 of the second supporting body 22 is provided with a second convex pillar 222, and at least a portion of the second convex pillar 222 is embedded in the first guide rail 311.

Specifically, referring to fig. 1 and fig. 3 to fig. 5, in the present embodiment, the movable assembly 3 includes a first movable plate 31, a first guide rail 311 extending along a first direction is disposed on the first movable plate 31, and the first guide rail 311 penetrates through the first movable plate 31 along a direction perpendicular to the first movable plate 31, so that both the first boss 213 on the first supporting body 21 and the second boss 222 on the second supporting body 22 can slide along the first guide rail 311.

When the first convex column 213 slides along the first rail 311 to the end of the first rail 311 close to the reel assembly 4, the second convex column 222 slides along the first rail 311 to the end of the first rail 311 far from the reel assembly 4, so that the first movable plate 31 and the second supporting body 22 are both located outside the first cavity 211, during the sliding process of the movable assembly 3 and the second supporting body 22, the second display 12 rotates around the reel assembly 4 and slides out of the first cavity 211 along with the second supporting body 22, the first supporting body 21 and the second supporting body 22 respectively support the first display 11 and the second display 12, the supporting area under the display screen 1 is increased while the display area is increased, thereby achieving better supporting effect, the requirement of a large screen is met, and meanwhile, the flatness of the flexible second display screen 12 is improved, so that the display effect is improved.

When the display device 100 is in the extended state to the retracted state, the first protruding column 213 slides along the first guide rail 311 to the end of the first guide rail 311 away from the reel assembly 4, the second protruding column 222 slides along the first guide rail 311 to the end of the first guide rail 311 close to the reel assembly 4, the second supporting body 22 and the movable assembly 3 retract into the first cavity 211, and the second flexible display screen is wound on the reel assembly 4, so that the size of the display device 100 can be reduced, and the display device is convenient to carry. When in the retracted state, the first supporting body 21 is located on a side of the first display 11 away from the light exit surface, and the first supporting body 21 can perform a good supporting function on the first display 11, so that even in the retracted state, the first display 11 can be used for displaying images.

In the present embodiment, the first movable plate 31 is provided with the first guide rail 311 penetrating through the first movable plate 31, and when the first movable plate 31 is in the retracted state to the extended state, or the extended state to the retracted state, the first protruding column 213 and the second protruding column 222 slide in the first guide rail 311 to realize the relative movement between the first supporting body 21 and the movable assembly 3 and the second supporting body 22, which is not only flexible in use, but also simple in operation. In addition, only one guide rail is arranged, and the first convex column 213 and the second convex column 222 slide along the first guide rail 311, so that the manufacturing process is simplified, and the manufacturing difficulty is reduced.

It should be noted that fig. 3-5 are only for schematically illustrating that the first guide rail 311 penetrates through the first movable plate 31, and the first stud 213 and the second stud 222 both move along the first guide rail 311, and do not represent actual structures of the first guide rail 311, the first stud 213, the second stud 222, and the like. When the display device 100 is in the contracted state, referring to fig. 4, the first protrusion 213 is located on the inner sidewall 212 of the first support 21, and the first protrusion 213 is illustrated in a dashed line in fig. 4 for explaining a position structure of the first protrusion 213.

In order to show the position relationship between the first plate 31 and the first and

second bosses

213 and 222 more clearly, fig. 5 only schematically shows the first plate 31, the first boss 213 and the second boss 222, the shapes of the first and

second bosses

213 and 222 in fig. 5 are only schematically illustrated and do not represent actual structures, and in other embodiments, the first and

second bosses

213 and 222 may also be hemispherical, so as to achieve a smoother sliding effect.

Optionally, referring to fig. 5, the outer diameter of the first protruding pillar 213 embedded in the first guiding rail 311 is smaller than the width of the first guiding rail 311; the outer diameter of the second convex column 222 embedded in the first guide rail 311 is smaller than the width of the first guide rail 311. Specifically, referring to fig. 5, the outer diameter R1 of the first convex pillar 213 embedded in the first guide rail 311 is smaller than the width L1 of the first guide rail 311, and the outer diameter R2 of the second convex pillar 222 embedded in the first guide rail 311 is smaller than the width L1 of the first guide rail 311, so that the first convex pillar 213 and the second convex pillar 222 embedded in the first guide rail 311 can freely slide in the first guide rail 311, thereby preventing the support body 2 and the movable assembly 3 from being jammed in relative movement due to the unsmooth sliding, and causing a use failure.

Alternatively, fig. 6 is another sectional view taken along AA 'in fig. 1, and fig. 7 is another sectional view taken along AA' in fig. 2, please refer to fig. 1, 6 and 7, in which the movable assembly 3 includes a second movable plate 32, a second rail 321 and a third rail 322 are disposed on the second movable plate 32, and the second rail 321 and the third rail 322 extend in the same direction as the first direction; a third convex column 214 is arranged on the inner side wall 212 of the first supporting body 21, and at least part of the third convex column 214 is embedded in the second guide rail 321; the outer sidewall 221 of the second supporting body 22 is provided with a fourth protruding pillar 223, and at least a portion of the fourth protruding pillar 223 is embedded in the third guiding rail 322.

Specifically, referring to fig. 1, fig. 6 and fig. 7, in the present embodiment, the movable assembly 3 includes a second movable plate 32, a second guide rail 321 and a third guide rail 322 extending along a first direction are disposed on the second movable plate 32, at least a portion of the third protruding pillar 214 on the inner sidewall 212 of the first supporting body 21 is embedded in the second guide rail 321, at least a portion of the fourth protruding pillar 223 on the outer sidewall 221 of the second supporting body 22 is embedded in the third guide rail 322, the third protruding pillar 214 slides along the second guide rail 321, and the fourth protruding pillar 223 slides along the third guide rail 322.

When the movable plate 32 and the second support 22 are located outside the first cavity 211, the third pillar 214 slides along the second rail 321 to the end of the second rail 321 close to the reel assembly 4, and the fourth pillar 223 slides along the third rail 322 to the end of the third rail 322 far from the reel assembly 4, during the sliding process of the movable assembly 3 and the second supporting body 22, the second display 12 rotates around the reel assembly 4 and slides out of the first cavity 211 along with the second supporting body 22, the first supporting body 21 and the second supporting body 22 respectively support the first display 11 and the second display 12, the supporting area under the display screen 1 is increased while the display area is increased, thereby achieving better supporting effect, the requirement of a large screen is met, and meanwhile, the flatness of the flexible second display screen 12 is improved, so that the display effect is improved.

When the display device 100 is in the unfolded state and the contracted state, the third convex column 214 slides to one end of the second guide rail 321 far away from the reel assembly 4 along the second guide rail 321, the fourth convex column 223 slides to one end of the third guide rail 322 near the reel assembly 4 along the third guide rail 322, the second support body 22 and the movable assembly 3 are contracted into the first cavity 211, and the second flexible display screen is wound on the reel assembly 4, so that the size of the display device 100 can be reduced, and the display device is convenient to carry. When in the retracted state, the first supporting body 21 is located on a side of the first display 11 away from the light exit surface, and the first supporting body 21 can perform a good supporting function on the first display 11, so that even in the retracted state, the first display 11 can be used for displaying images.

In this embodiment, the second movable plate 32 is provided with the second guide rail 321 and the third guide rail 322, and when the second movable plate is in the retracted state to the extended state, or the extended state to the retracted state, the first support body 21, the movable assembly 3 and the second support body 22 are moved relative to each other by the convex pillar sliding in the guide rails, so that the operation is flexible and simple. In addition, two guide rails are arranged on the second movable plate 32, and the convex columns on the first support body 21 and the second support body 22 respectively slide in different guide rails, so that the guide rails do not need to penetrate through the second movable plate 32, the requirement on the thickness of the second movable plate 32 is low, and the smaller the thickness of the second movable plate 32 is, the more the side thickness of the display device 100 is favorably reduced, i.e., the more the narrow frame is favorably realized, thereby being favorable for increasing the display area and further improving the display effect.

Alternatively, fig. 8 is a cross-sectional view of the second movable plate 32 along the direction CC' in fig. 6, please refer to fig. 8, the outer diameter of the portion of the third pillar 214 embedded in the second rail 321 is smaller than the width of the second rail 321; the outer diameter of the fourth convex column 223 embedded in the third guide rail 322 is smaller than the width of the third guide rail 322.

Specifically, referring to fig. 8, the outer diameter R3 of the third convex pillar 214 embedded in the second rail 321 is smaller than the width L2 of the second rail 321, and the outer diameter R4 of the fourth convex pillar 223 embedded in the third rail 322 is smaller than the width L3 of the third rail 322, so that the third convex pillar 214 embedded in the second rail 321 can freely slide in the second rail 321, and the fourth convex pillar 223 embedded in the third rail 322 can freely slide in the third rail 322, thereby preventing the support body 2 and the movable assembly 3 from being blocked in relative movement due to unsmooth sliding, and causing a use failure.

It should be noted that, fig. 8 is only for schematically illustrating that the third convex pillar 214 slides along the second guide rail 321, and the fourth convex pillar 223 slides along the third guide rail 322, and does not represent actual shapes and sizes of the second guide rail 321, the third guide rail 322, the third convex pillar 214, and the fourth convex pillar 223, bottoms of the second guide rail 321 and the third guide rail 322 may be C-shaped structures, and ends of the third convex pillar 214 and the fourth convex pillar 223 embedded in the guide rail portion may be smooth structures, for example, an end of the third convex pillar 214 embedded in the second guide rail 321 is hemispherical, and an end of the fourth convex pillar 223 embedded in the third guide rail 322 is hemispherical, so as to achieve a smoother sliding effect.

Alternatively, referring to fig. 1 and 6-8, an orthographic projection of the second rail 321 on the plane of the second flap 32 does not overlap an orthographic projection of the third rail 322 on the plane of the second flap 32. Specifically, referring to fig. 1 and fig. 6 to 8, two guide rails are disposed on the second movable plate 32, and the convex columns on the first supporting body 21 and the second supporting body 22 respectively slide in the different guide rails. And the orthographic projection of the second guide rail 321 on the plane where the second movable plate 32 is located does not overlap with the orthographic projection of the third guide rail 322 on the plane where the second movable plate 32 is located, so that the guide rail does not need to penetrate through the second movable plate 32, the requirement on the thickness of the second movable plate 32 is low, and the smaller the thickness of the second movable plate 32 is, the more favorable the reduction of the side thickness of the display device 100 is, that is, the more favorable the realization of a narrow frame, thereby being favorable for increasing the display area and further improving the display effect.

Alternatively, fig. 9 is a further sectional view taken along AA 'in fig. 1, and fig. 10 is a further sectional view taken along AA' in fig. 2, and referring to fig. 1, 9 and 10, the display device 100 further includes a threaded rod 5, and the threaded rod 5 is fixed to the first supporting body 21 by a motor 6; the movable assembly 3 comprises a third movable plate 33, a threaded cavity 331 is formed on the third movable plate 33, and the first support 21 is in threaded connection with the third movable plate 33; the third movable plate 33 is further provided with a fourth rail 332, and the extending direction of the fourth rail 332 is the same as the first direction; the outer sidewall 221 of the second supporting body 22 is provided with a fifth protruding pillar 224, and at least a portion of the fifth protruding pillar 224 is embedded in the fourth guiding rail 332.

Specifically, referring to fig. 1, 9 and 10, the display device 100 of the present embodiment includes a threaded rod 5, the threaded rod 5 is fixed to the first support 21 by a motor 6, a threaded cavity 331 matching with the threaded rod 5 is disposed on the third movable plate 33, and the third movable plate 33 is connected to the first support 21 by a thread. The third movable plate 33 is further provided with a fourth rail 332 extending along the first direction, the fifth stud 224 of the outer sidewall 221 of the second support 22 is at least partially embedded in the fourth rail 332, and the fifth stud 224 slides along the fourth rail 332.

When the movable plate 33 is moved from the retracted state to the extended state, the motor 6 controls the threaded rod 5 to rotate, so that the third movable plate 33 moves along the threaded rod 5 in a direction away from the winding shaft assembly 4, and at the same time, the fifth boss 224 slides along the fourth rail 332 to an end of the fourth rail 332 away from the winding shaft assembly 4, so that the third movable plate 33 and the second support 22 are both located outside the first cavity 211. At the gliding in-process of movable part 3 and second supporter 22, second display screen 12 rotates and along with the first cavity 211 of second supporter 22 roll-off around reel subassembly 4, first supporter 21 and second supporter 22 support first display screen 11 and second display screen 12 respectively, in the increase display area, the support area of 1 below of display screen has still been increased, reach better supporting effect, when satisfying the large screen demand, still be favorable to improving the roughness of flexible second display screen 12, thereby improve display effect.

When the display device 100 is in the extended state and the retracted state, the motor 6 controls the threaded rod 5 to rotate, so that the third movable plate 33 moves along the threaded rod 5 in a direction close to the reel assembly 4, the fifth boss 224 slides along the fourth rail 332 to one end of the fourth rail 332 close to the reel assembly 4, the second support body 22 and the movable assembly 3 retract into the first cavity 211, and the second flexible display screen is wound on the reel assembly 4, so that the size of the display device 100 can be reduced, and the display device is convenient to carry. When in the retracted state, the first supporting body 21 is located on a side of the first display 11 away from the light exit surface, and the first supporting body 21 can perform a good supporting function on the first display 11, so that even in the retracted state, the first display 11 can be used for displaying images.

In this embodiment, the first supporting body 21 is connected to the third movable plate 33 through a screw, so that the first supporting body 21 and the third movable plate 33 are expanded or contracted more freely, and the movable assembly 3 can hover at different positions, for example, when the second display screen 12 does not need to be completely displayed, the motor 6 can be used to control the threaded rod 5 and the third movable plate 33 to be incompletely expanded, and compared with sliding through a guide rail, the size of the display screen 1 can be more varied, and different user requirements can be met.

It should be noted that fig. 9 and 10 are only for schematically illustrating the threaded connection between the third movable plate 33 and the first supporting body 21, and do not represent the actual sizes of the threaded rod 5 and the threaded cavity 331.

Alternatively, fig. 11 is a cross-sectional view of the third movable plate 33 along the direction DD' in fig. 9, please refer to fig. 11, an outer diameter of the portion of the fifth pillar 224 embedded in the fourth rail 332 is smaller than a width of the fourth rail 332. Specifically, referring to fig. 11, the outer diameter R5 of the portion of the fifth convex pillar 224 embedded in the fourth guide rail 332 is smaller than the width L4 of the fourth guide rail 332, so that the fifth convex pillar 224 embedded in the fourth guide rail 332 can slide freely in the fourth guide rail 332, and the clamping stagnation of the relative movement of the support body 2 and the movable assembly 3 caused by the unsmooth sliding is avoided, thereby causing a use failure.

It should be noted that fig. 11 is only for schematically illustrating that the outer diameter R5 of the portion of the fifth stud 224 embedded in the fourth rail 332 is smaller than the width of the fourth rail 332, and does not represent the actual shape and size of the fourth rail 332 and the fifth stud 224. In addition to the structure shown in fig. 11, the bottom of the fourth rail 332 may also be a C-shaped structure, and the end of the fifth pillar 224 embedded in the rail portion may be a smooth structure, for example, the end of the fifth pillar 224 embedded in the fourth rail 332 portion is hemispherical, so as to achieve a smoother sliding effect.

Alternatively, referring to fig. 1 and 9-11, an orthographic projection of the fourth rail 332 on the plane of the third movable plate 33 does not overlap with an orthographic projection of the threaded cavity 331 on the plane of the third movable plate 33. Specifically, referring to fig. 1 and 9-11, the third movable plate 33 is provided with a threaded cavity 331 and a fourth guide rail 332, the threaded rod 5 on the first support 21 moves in the threaded cavity 331, the fifth boss 224 on the second support 22 slides along the fourth guide rail 332, and an orthographic projection of the fourth guide rail 332 on a plane where the third movable plate 33 is located does not overlap with an orthographic projection of the threaded cavity 331 on a plane where the third movable plate 33 is located, that is, the fourth guide rail 332 and the threaded cavity 331 are respectively disposed at different positions of the third movable plate 33. Thus, the requirement on the thickness of the third movable plate 33 is lower, and the smaller the thickness of the third movable plate 33 is, the more favorable the reduction of the side thickness of the display device 100 is, that is, the more favorable the realization of a narrow bezel is, thereby being favorable for increasing the display area and further improving the display effect.

Alternatively, fig. 12 is a further sectional view taken along AA ' in fig. 1, fig. 13 is a further sectional view taken along AA ' in fig. 2, fig. 14 is a sectional view of the fourth movable plate 34 taken along EE ' in fig. 12, please refer to fig. 1 and 12-14, the movable assembly 3 includes the fourth movable plate 34, the fourth movable plate 34 is provided with a fifth guide rail 341, and the extending direction of the fifth guide rail 341 is the same as the first direction; a sixth convex column 215 is arranged on the inner side wall 212 of the first supporting body 21, and at least part of the sixth convex column 215 is embedded in the fifth guide rail 341; a sixth guide rail 342 is arranged on the outer side wall 221 of the second support body 22, and the extending direction of the sixth guide rail 342 is the same as the first direction; the movable assembly 3 includes a seventh protruding pillar fixed on the fourth movable plate 34, and at least a portion of the seventh protruding pillar 225 is embedded in the sixth guiding rail 342.

Specifically, referring to fig. 1, 12 and 13, the movable assembly 3 of the present embodiment includes a fourth movable plate 34, a fifth guide rail 341 extending along a first direction is disposed on the fourth movable plate 34, and the sixth protruding pillar 215 on the inner sidewall 212 of the first supporting body 21 slides along the fifth guide rail 341; a sixth guide rail 342 extending along the first direction is disposed on the outer sidewall 221 of the second support 22, a seventh protruding pillar 225 is disposed on the fourth movable plate 34 at a side close to the outer sidewall 221 of the second support 22, a portion of the seventh protruding pillar 225 is embedded in the sixth guide rail 342, and the seventh protruding pillar 225 slides along the sixth guide rail 342.

From the retracted state to the extended state, the sixth stud 215 slides along the fifth rail 341 to an end of the fifth rail 341 close to the reel assembly 4, the seventh stud 225 slides along the sixth rail 342 to an end of the sixth rail 342 close to the reel assembly 4, so that the second movable plate 32 and the second supporting body 22 are both located outside the first cavity 211, during the sliding process of the movable assembly 3 and the second supporting body 22, the second display 12 rotates around the reel assembly 4 and slides out of the first cavity 211 along with the second supporting body 22, the first supporting body 21 and the second supporting body 22 respectively support the first display 11 and the second display 12, the supporting area under the display screen 1 is increased while the display area is increased, thereby achieving better supporting effect, the requirement of a large screen is met, and meanwhile, the flatness of the flexible second display screen 12 is improved, so that the display effect is improved.

When the display device 100 is in the expanded state to the contracted state, the sixth convex column 215 slides along the fifth guide rail 341 to the end of the fifth guide rail 341 far away from the reel assembly 4, the seventh convex column 225 slides along the sixth guide rail 342 to the end of the sixth guide rail 342 far away from the reel assembly 4, the second support body 22 and the movable assembly 3 are contracted into the first cavity 211, and the second flexible display screen is wound on the reel assembly 4, so that the volume of the display device 100 can be reduced, and the display device is convenient to carry. When in the retracted state, the first supporting body 21 is located on a side of the first display 11 away from the light exit surface, and the first supporting body 21 can perform a good supporting function on the first display 11, so that even in the retracted state, the first display 11 can be used for displaying images.

Referring to fig. 14, in the embodiment, a convex pillar is disposed on the fourth movable plate 34, and the convex pillar may be embedded in the guide rail of the second supporting body 22, so that the positions of the guide rail and the convex pillar on the fourth movable plate 34 do not need to be limited, and the requirement on the thickness of the fourth movable plate 34 may also be reduced, and the smaller the thickness of the fourth movable plate 34, the more favorable the reduction of the side thickness of the display device 100, that is, the more favorable the realization of a narrow bezel, thereby being favorable for increasing the display area and further improving the display effect.

It should be noted that fig. 14 is only a schematic illustration of the guide rail and the stud on the fourth movable plate 34, and does not represent actual positions of the guide rail and the stud, in other embodiments, the orthographic projections of the guide rail and the stud on the fourth movable plate 34 may overlap, as shown in fig. 15, fig. 15 is another cross-sectional view of the fourth movable plate 34 along EE' in fig. 12, as shown in fig. 15, the orthographic projection of the seventh stud 225 on the fourth movable plate 34 overlaps the orthographic projection of the fifth guide rail 341 on the fourth movable plate 34, since the seventh stud 225 protrudes from the fourth movable plate 34, even if the orthographic projections of the fourth movable plate and the fifth movable plate overlap, the fourth movable plate 34 does not need to be thick, and the thickness of the fourth movable plate 34 is only required to be provided with the fifth guide rail 341, thereby facilitating to reduce the lateral thickness of the display device 100 and improve the display effect.

Optionally, referring to fig. 12-15, the outer diameter R6 of the sixth protrusion 215 embedded in the fifth guide rail 341 is smaller than the width L5 of the fifth guide rail 341; the outer diameter R7 of the portion of the seventh stud 225 embedded in the sixth rail 342 is smaller than the width L6 of the sixth rail 342.

Specifically, referring to fig. 12-15, the outer diameter R6 of the sixth convex pillar 215 embedded in the fifth rail 341 is smaller than the width L5 of the fifth rail 341, and the outer diameter R7 of the seventh convex pillar 225 embedded in the sixth rail 342 is smaller than the width L6 of the sixth rail 342, so that the sixth convex pillar 215 embedded in the fifth rail 341 can freely slide in the fifth rail 341, and the seventh convex pillar 225 embedded in the sixth rail 342 can freely slide in the sixth rail 342, thereby preventing the support body 2 and the movable assembly 3 from being blocked by relative movement due to the unsmooth sliding, and causing the use failure.

Alternatively, referring to fig. 1, the inner sidewall 212 of the first support body 21 includes a first inner sidewall 2121 and a second inner sidewall 2122 opposite to each other along the second direction; the outer sidewall 221 of the second support 22 includes a first outer sidewall 2211 and a second outer sidewall 2212 opposite in a second direction; the movable element 3 comprises at least a first movable element 331 and a second movable element 332, wherein the first movable element 331 is slidably connected with the first inner side wall 2121, and the second movable element 332 is slidably connected with the second inner side wall 2122; the first outer side wall 2211 is slidably connected to the first movable element 331, and the second outer side wall 2212 is slidably connected to the second movable element 332.

Specifically, referring to fig. 1, in the view shown in fig. 1, the first support 21 includes a first inner side wall 2121 and a second inner side wall 2122 which are opposite to each other, and the second support 22 includes a first outer side wall 2211 and a second outer side wall 2212 which are opposite to each other. The first movable assembly 331 is arranged between the first inner side wall 2121 and the first outer side wall 2211, the second movable assembly 332 is arranged between the second inner side wall 2122 and the second outer side wall 2212, and in the process of expanding or contracting the display device 100, the first movable assembly 331 and the second movable assembly 332 slide simultaneously, so that the connection stability between the first support body 21 and the second support body 22 is improved, and when one movable assembly 3 fails, the expansion or contraction of the screen can be realized through the other movable assembly 3, so that the process of the display device 100 from the expanded state to the contracted state or from the contracted state to the expanded state is more reliable.

The movable assembly 3 shown in fig. 1-15 is located between the inner sidewall 212 of the first support 21 and the outer sidewall 221 of the second support 22, which is only one embodiment of the present application in this embodiment and is not meant to limit the present application. In other embodiments, the movable assembly 3 may also be located on a side of the second supporting body 22 away from the first supporting body 21, as shown in fig. 16-18, fig. 16 is another top view of the display device 100 provided in the embodiment of the present application in the expanded state, fig. 17 is another top view of the display device 100 provided in the embodiment of the present application in the contracted state, and fig. 18 is a cross-sectional view along FF' in fig. 17.

Referring to fig. 16-18, the movable assembly includes a first guide plate 312, a second guide plate 313, and a connecting plate 314 connecting the first guide plate 312 and the second guide plate 313, wherein the first guide plate 312 and the second guide plate 313 are oppositely arranged along a second direction; the first guide plate 312 is provided with a seventh guide rail 315 and an eighth guide rail 316 extending in the first direction; an eighth convex column 317 is arranged on the inner side wall of the first support body, and at least part of the eighth convex column 317 is embedded in the seventh guide rail 315; a ninth protruding pillar 318 is disposed on an inner side wall of the second supporting body, and at least a portion of the ninth protruding pillar 318 is embedded in the eighth guiding rail 316.

Specifically, referring to fig. 16-18, in the present embodiment, the movable assembly 3 is located on a side of the second support 22 away from the first support 21, the movable assembly 3 includes a first guide plate 312, a second guide plate 313 and a connecting plate 314, wherein the connecting plate 314 connects the first guide plate 312 and the second guide plate 313, the first guide plate 312 is provided with a seventh guide rail 315 and an eighth guide rail 316, wherein at least a portion of the eighth protrusion 317 on the inner side wall of the first support 21 is embedded in the seventh guide rail 315, so that the first support 21 slides along the seventh guide rail 315; at least a portion of the ninth protrusion 318 on the inner sidewall of the second support 22 is embedded in the eighth guide rail 316, so that the second support 22 slides along the eighth guide rail 316.

From the retracted state to the extended state, the eighth protrusion 317 slides along the seventh guide rail 315, the movable assembly 3 slides out of the first cavity 211, the ninth protrusion 318 slides along the eighth guide rail 316, the second support 22 is extended relative to the movable assembly 3, and during the sliding of the movable assembly 3 and the second support 22, the second display 12 rotates around the roller assembly 4 and slides out of the first cavity 211 together with the second support 22. Referring to fig. 18, a connecting plate 314 is arranged between the first guide plate 312 and the second guide plate 313, when the first supporting body 21, the movable assembly 3 and the second supporting body 22 are both unfolded, except that the first supporting body 21 and the second supporting body 22 respectively support the first display screen 11 and the second display screen 12, the connecting plate 314 can also support the second display screen 12, thereby further increasing the supporting area below the display screen 1, achieving a better supporting effect, satisfying the large screen requirement, and simultaneously being beneficial to further improving the flatness of the flexible second display screen 12, thereby improving the display effect.

Referring to fig. 18, the movable assembly is located on a side of the second support 22 away from the first support 21, and when the display device is in the unfolded state, the connecting plate 314 and the second support 22 support the second display 12 together, but due to the step existing between the connecting plate 314 and the supporting surface of the second support 22, the flexible second display 12 is wrinkled, which affects the display effect. Further, referring to fig. 19, fig. 19 is a schematic structural diagram of the guide rail provided in the embodiment of the present application, in order to avoid wrinkles occurring on the flexible second display 12, in the embodiment, an end portion of the eighth guide rail 316 is arranged to be inclined downward, for example, the eighth guide rail 316 includes a first portion 3161 and a second portion 3162, the first portion 3161 extends along the first direction, and the second portion 3162 is bent toward a side away from the plane where the connecting plate 314 is located with respect to the first portion 3161. Thus, the second supporting body 22 slides along the first portion 3161 first, so that the second supporting body 22 is unfolded relative to the movable assembly 3, and then slides along the second portion 3162, and when the second supporting body 22 slides along the second portion 3162, the second supporting body 22 moves along the first direction and the third direction respectively, where the third direction is a direction along the first portion 3161 toward a side of the first portion 3161 away from the plane where the connecting plate 314 is located. When the second supporting body 22 slides along the second portion 3162, it moves a certain distance along the third direction, so that after the second supporting body 22 is completely unfolded, the supporting surface of the second supporting body 22 is flush with the surface of the connecting plate 314, and the problem that the flexible second display screen 12 is wrinkled due to the step existing between the connecting plate 314 and the supporting surface of the second supporting body 22 can be avoided, which is beneficial to improving the display effect.

It should be noted that fig. 16 to 19 are only schematic illustrations of the present embodiment, and do not limit the present application.

Optionally, referring to fig. 1 and fig. 2, the display device 100 further includes a main board 7 and a flexible adapting circuit board 8; the mainboard 7 is fixed on the scroll component 4, and the first display screen 11 is electrically connected with the mainboard 7; the second display screen 12 is connected with the main board 7 through the flexible switching circuit board 8; in the contracted state, the flexible relay circuit board 8 is wound around the reel assembly 4.

Specifically, referring to fig. 1 and fig. 2, the display device 100 further includes a main board 7 and a flexible adapting circuit board 8; mainboard 7 is fixed on reel subassembly 4, and first display screen 11 is connected with mainboard 7 electricity, and second display screen 12 is connected with mainboard 7 electricity through flexible adapter circuit board 8. In a contraction state, the mainboard 7 provides a signal for the first display screen 11, so that the first display screen 11 can normally display a picture; in the unfolded state, the main board 7 provides signals for the first display screen 11, and meanwhile, the main board 7 transmits the signals to the second display screen 12 through the flexible switching circuit board 8, so that the second display screen 12 can display pictures. When the display device is in the unfolded state, the main board 7 provides signals for the first display screen 11 and the second display screen 12 respectively, and the first display screen 11 and the second display screen 12 can display in a partition mode or can display images in a coordinated mode according to needs, so that different use requirements of users are met.

Alternatively, fig. 20 shows an exploded view of the first supporting body 21 and the reel assembly 4 provided in the embodiment of the present application, please refer to fig. 20, in which the reel assembly 4 includes a rotating shaft 41 and a rotating drum 42, two ends of the rotating shaft 41 are connected to the first supporting body 21 through the connecting part 9, and the rotating drum 42 is sleeved outside the rotating shaft 41 and is fixedly connected to the rotating shaft 41.

Specifically, referring to fig. 20, the roller assembly 4 includes a rotating shaft 41 and a rotating drum 42, the rotating shaft 41 is rotatably mounted to two opposite inner sidewalls of the first supporting body 21 through the connecting member 9, and the first rotating shaft 41 can freely rotate relative to the first supporting body 21 when the second display 12 is unfolded and retracted. The rotating drum 42 is sleeved outside the rotating shaft 41 and is fixedly connected to the rotating shaft 41, that is, the rotating drum 42 and the rotating shaft 41 are relatively fixed, so that when the rotating shaft 41 rotates, the rotating drum 42 can be driven to rotate, and the second display screen 12 is wound on the surface of the rotating drum 42 or unwound along with the rotation of the rotating drum 42.

Referring to fig. 2 and 4, in the contracted state, the flexible adapting circuit board 8 is wound on the reel assembly 4, and a portion of the second display 12 is also wound on the reel assembly 4. Referring to fig. 1 and 3, when the display device is in the retracted state and the extended state, the movable assembly 3 and the first support 21 slide out of the first cavity 211, and the rotation shaft 41 drives the rotation drum 42 to rotate, because the second display 12 is connected to the main board 7 through the flexible adapting circuit board 8, when the second display 12 is extended along with the rotation drum 42, the flexible adapting circuit board 8 is also extended, and the extendable length of the flexible adapting circuit board 8 is substantially the same as the length of the first cavity 211 along the first direction, so that the second display 12 is located out of the first cavity 211 after being extended, and the flexible adapting circuit board 8 is located in the first cavity 211 after being extended, so that the second display 12 can normally display images.

Optionally, referring to fig. 1, a driver (not shown) is disposed on the roller assembly 4, and the driver is used for winding and unwinding the second display screen 12 on the roller assembly 4. Specifically, referring to fig. 1, in the present embodiment, a driver (not shown) is disposed on the reel assembly 4, the driver is electrically connected to the flexible adapting circuit board 8, and the flexible adapting circuit board 8 can be wound or unwound on the reel assembly 4 by the action of the driver. Because the second display screen 12 is fixed to one end of the flexible adapting circuit board 8, the second display screen 12 can move along with the flexible adapting circuit board 8, so that the second display screen 12 can be retracted or extended, and the display device 100 can meet different user requirements.

Optionally, referring to fig. 1, an end of the second display 12 away from the reel assembly 4 is fixedly connected to a side of the second supporting body 22 away from the first supporting body 21. Specifically, referring to fig. 1, in the present embodiment, one end of the second display 12 away from the reel assembly 4 is fixedly connected to one side of the second supporting body 22 away from the first supporting body 21, so that when the second supporting body 22 slides out from the first cavity 211 from the retracted state to the extended state, the second display 12 can synchronously slide out of the first cavity 211 along with the second supporting body 22, so that the second display 12 is used for displaying images. In addition, after the second display screen 12 is unfolded, because one end of the second display screen 12 is fixed to one side of the second supporting body 22 away from the first supporting body 21, the second supporting body 22 can play a fixed role in the second display screen 12, which is beneficial to improving the flatness of the second display screen 12, thereby improving the display effect.

According to the embodiments, the application has the following beneficial effects:

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A display device, comprising: the display screen, the supporting body, the movable assembly and the scroll assembly;

the support body comprises a first support body and a second support body, and the scroll assembly is fixed at one end of the first support body; a first cavity is formed in one end, far away from the reel assembly, of the first supporting body;

the movable assembly is respectively connected with the first support body and the second support body in a sliding manner;

2. The display device according to claim 1,

the movable assembly comprises a first movable plate, a first guide rail is arranged on the first movable plate, the extending direction of the first guide rail is the same as the first direction, and the first guide rail penetrates through the first movable plate along the second direction;

a first convex column is arranged on the inner side wall of the first support body, and at least part of the first convex column is embedded in the first guide rail;

and a second convex column is arranged on the outer side wall of the second support body, and at least part of the second convex column is embedded in the first guide rail.

3. The display device according to claim 2,

the outer diameter of the first convex column embedded in the first guide rail part is smaller than the width of the first guide rail;

the second convex column is embedded in the first guide rail, and the outer diameter of the second convex column is smaller than the width of the first guide rail.

4. The display device according to claim 1,

the movable assembly comprises a second movable plate, a second guide rail and a third guide rail are arranged on the second movable plate, and the extending direction of the second guide rail and the extending direction of the third guide rail are the same as the first direction;

a third convex column is arranged on the inner side wall of the first support body, and at least part of the third convex column is embedded in the second guide rail;

and a fourth convex column is arranged on the outer side wall of the second support body, and at least part of the fourth convex column is embedded in the third guide rail.

5. The display device according to claim 4,

the outer diameter of the third convex column embedded in the second guide rail part is smaller than the width of the second guide rail;

the fourth convex column is embedded in the third guide rail, and the outer diameter of the third convex column is smaller than the width of the third guide rail.

6. The display device according to claim 4,

the orthographic projection of the second guide rail on the plane of the second movable plate is not overlapped with the orthographic projection of the third guide rail on the plane of the second movable plate.

7. The display device according to claim 1, further comprising a threaded rod fixed to the first support body by a motor;

the movable assembly comprises a third movable plate, a threaded cavity is formed in the third movable plate, and the first support body is in threaded connection with the third movable plate;

a fourth guide rail is further arranged on the third movable plate, and the extending direction of the fourth guide rail is the same as the first direction;

and a fifth convex column is arranged on the outer side wall of the second support body, and at least part of the fifth convex column is embedded in the fourth guide rail.

8. The display device according to claim 7,

the fifth convex column is embedded in the fourth guide rail part, and the outer diameter of the fifth convex column is smaller than the width of the fourth guide rail.

9. The display device according to claim 7,

the orthographic projection of the fourth guide rail on the plane of the third movable plate is not overlapped with the orthographic projection of the threaded cavity on the plane of the third movable plate.

10. The display device according to claim 1,

the movable assembly comprises a fourth movable plate, a fifth guide rail is arranged on the fourth movable plate, and the extending direction of the fifth guide rail is the same as the first direction;

a sixth convex column is arranged on the inner side wall of the first support body, and at least part of the sixth convex column is embedded in the fifth guide rail;

a sixth guide rail is arranged on the outer side wall of the second support body, and the extending direction of the sixth guide rail is the same as the first direction;

the movable assembly comprises a seventh convex column fixed on the fourth movable plate, and at least part of the seventh convex column is embedded in the sixth guide rail.

11. The display device according to claim 10,

the sixth convex column is embedded in the fifth guide rail part, and the outer diameter of the sixth convex column is smaller than the width of the fifth guide rail;

the seventh convex column is embedded in the sixth guide rail, and the outer diameter of the seventh convex column is smaller than the width of the sixth guide rail.

12. The display device according to claim 1,

the inner side wall of the first support body comprises a first inner side wall and a second inner side wall which are opposite along a second direction; the outer side wall of the second support body comprises a first outer side wall and a second outer side wall which are opposite along a second direction;

the movable assembly at least comprises a first movable assembly and a second movable assembly, the first movable assembly is connected with the first inner side wall in a sliding mode, and the second movable assembly is connected with the second inner side wall in a sliding mode; the first outer side wall is connected with the first movable assembly in a sliding mode, and the second outer side wall is connected with the second movable assembly in a sliding mode.

13. The display device according to claim 1,

the movable assembly comprises a first guide plate, a second guide plate and a connecting plate for connecting the first guide plate and the second guide plate, and the first guide plate and the second guide plate are oppositely arranged along a second direction; the first guide plate is provided with a seventh guide rail and an eighth guide rail which extend along the first direction;

an eighth convex column is arranged on the inner side wall of the first support body, and at least part of the eighth convex column is embedded in the seventh guide rail;

and a ninth convex column is arranged on the inner side wall of the second support body, and at least part of the ninth convex column is embedded in the eighth guide rail.

14. The display device according to claim 1,

the flexible adapter circuit board is connected with the main board;

the main board is fixed on the scroll assembly, and the first display screen is electrically connected with the main board; the second display screen is electrically connected with the mainboard through the flexible switching circuit board; and in the contraction state, the flexible adapter circuit board is wound on the reel assembly.

15. The display device according to claim 1,

the reel assembly comprises a rotating shaft and a rotating drum, two ends of the rotating shaft are connected with the first supporting body through connecting parts, and the rotating drum is sleeved outside the rotating shaft and fixedly connected with the rotating shaft.

16. The display device according to claim 1,

and the reel assembly is provided with a driver, and the driver is used for realizing the winding and the unwinding of the second display screen on the reel assembly.

17. The display device according to claim 1,

one end, far away from the reel assembly, of the second display screen is fixedly connected to one side, far away from the first supporting body, of the second supporting body.