Display device

Abstract

To solve problems of a large occupation area and a single application scenario of a display device.SOLUTION: A display device includes a housing, a reel assembly, a first cover, and a display module. The housing has a first side plate and a second side plate. The reel assembly includes a rotating shaft rotatably connected to each of the first side plate and the second side plate. The first cover is movable toward or away from the rotating shaft. Both ends of the display module are fixedly connected to the first cover and the rotating shaft, respectively. Thereby, if the distance between the first cover and the rotating shaft is large, then the display area of the first display portion in the display module connected to the first cover is large; if the distance between the first cover and the rotating shaft is small, then a part of the display module is wound around the rotating shaft, so that the area of the first display portion is reduced, and the space occupied by the display device is reduced. Users can see the display content of the display device from multiple angles, and application scenarios are enriched.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] This application relates to the field of display technology, and more particularly to display devices. [Background technology]

[0002] Organic Light Emitting Diode (OLED) display panels have advantages over LCDs, such as being thinner and lighter, offering better display effects, higher resolution, a wider color gamut, lower power consumption, and flexible display. They have been developing rapidly in recent years, and are expected to find widespread application in the market. Currently, medium and large sized OLED displays have the disadvantages of large area and single application scenario, which needs to be solved as soon as possible. Summary of the Invention

[0003] The embodiments of the present application provide a display device that can effectively solve the problem of medium to large sized OLED displays, which have a large occupancy area and limited application scenarios.

[0004] An embodiment of the present application provides a display device, the display device including a housing, a reel assembly, a first cover, and a display module; the housing includes a first side plate and a second side plate, the first side plate and the second side plate being disposed opposite each other; the reel assembly includes a rotating shaft, the rotating shaft being rotatably connected to the first side plate and the second side plate, the first cover is disposed on one side of the rotation shaft, and the first cover is movable in a direction toward or away from the rotation shaft; one end of the display module is fixedly connected to the first cover, and the other end of the display module is fixedly connected to the rotation shaft, and the display module includes a first display unit connected to the first cover; When there is a first distance between the first cover and the rotation shaft, an area of ​​the first display unit is a; When there is a second distance between the first cover and the rotation axis, with the area of the first display portion being b, the second distance is smaller than the first distance, b < a, and the display module further includes a first non-display portion wound around the rotation axis and a second display portion disposed between the first non-display portion and the first display portion, and the display surfaces of the second display portion and the first display portion are located on different sides with respect to the rotation axis respectively.

[0005] Optionally, when there is a third distance between the first cover and the rotation axis, with the display area of the first display portion being c, the third distance is larger than the second distance and smaller than the first distance, b < c < a, and the display module further includes a first non-display portion wound around the rotation axis and a second display portion disposed between the first non-display portion and the first display portion, and the display surfaces of the second display portion and the first display portion are located on different sides with respect to the rotation axis respectively.

[0006] Optionally, the reel assembly further includes a first roller and a second roller, the first roller and the second roller are disposed at intervals, and both are disposed on the side of the rotation axis away from the first cover, the first roller is rotatably connected to the first side plate and the second side plate respectively, and the second roller is rotatably connected to the first side plate and the second side plate respectively. Here, the display module includes a first portion spanning between the first cover and the first roller and a second portion spanning between the rotation axis and the second roller. When there is a first distance between the first cover and the rotation axis, the first portion is the first display portion. When there is a second distance between the first cover and the rotation axis, the first portion is the first display portion and the second portion is the second display portion.

[0007] Optionally, the display module further includes a third portion spanning between the first roller and the second roller, where When there is a second distance between the first cover and the rotation axis, the display module further includes a third display unit arranged between the first display unit and the second display unit, and the display surface of the third display unit, the display surface of the first display unit, and the display surface of the second display unit are each located on different sides of the rotation axis, and the third part is the third display unit.

[0008] Optionally, the reel assembly further includes a first roller, the first roller being disposed on a side of the rotation shaft away from the first cover, the first roller being rotatably connected to the first side plate and the second side plate, respectively; Here, the display module includes a first portion spanning between the first cover and the first roller and a second portion spanning between the rotation axis and the first roller, and when there is a first distance between the first cover and the rotation axis, the first portion is the first display unit, and when there is a second distance between the first cover and the rotation axis, the first portion is the first display unit and the second portion is the second display unit.

[0009] Optionally, the display device further includes a support assembly, the support assembly including a first support plate and a second support plate, wherein: the first support plate is disposed on a side of the first portion opposite the second portion and is attached to the first portion; The second support plate is disposed on a side of the second portion opposite the first portion and is attached to the second portion.

[0010] Optionally, the rotating shaft includes a rotating shaft body and a coil spring, the rotating shaft body having a cavity, and the coil spring is disposed in the cavity; When there is a first distance between the first cover and the rotation shaft, the coil spring is in an extended state; When there is a second distance between the first cover and the rotation shaft, the coil spring is in a contracted state.

[0011] Optionally, the reel assembly further includes a connecting link, wherein the connecting link is connected to the first cover, and the connecting link can be extended or shortened to move the first cover toward or away from the rotation axis.

[0012] Optionally, the connection links include a first connection link, a second connection link, a third connection link, and a fourth connection link; the first connecting link and the second connecting link are disposed crosswise and rotatably connected; The third connecting link and the fourth connecting link are arranged crosswise and rotatably connected, one end of the third connecting link is rotatably connected to one end of the first connecting link, the other end of the third connecting link is rotatably connected to the first cover, one end of the fourth connecting link is rotatably connected to one end of the second connecting link, and the other end of the fourth connecting link is rotatably and slidably connected to the first cover.

[0013] Optionally, the connecting link further includes a fixed link and a sliding link; One end of the fixed link is fixedly connected to the first side plate, one end of the slide link is slidably connected to the second side plate, and the other end of the fixed link is slidably connected to the other end of the slide link, wherein the other end of the first connecting link is rotatably connected to the fixed link, and the other end of the second connecting link is rotatably connected to the slide link.

[0014] This application provides a display device, which includes a housing, a reel assembly, a first cover, and a display module. The housing includes a first side plate and a second side plate, and the first side plate and the second side plate are arranged opposite to each other. The reel assembly includes a rotating shaft, and the rotating shaft is rotatably connected to the first side plate and the second side plate respectively. The first cover is arranged on one side of the rotating shaft, and the first cover is movable in a direction approaching or departing from the rotating shaft. One end of the display module is fixedly connected to the first cover, and the other end of the display module is fixedly connected to the rotating shaft. The display module includes a first display part connected to the first cover. When there is a first distance between the first cover and the rotating shaft, the area of the first display part is a. When there is a second distance between the first cover and the rotating shaft, the area of the first display part is b. The second distance is smaller than the first distance, and b < a. The display module further includes a first non-display part wound around the rotating shaft and a second display part arranged between the first non-display part and the first display part. The display surface of the second display part and the display surface of the first display part are located on different sides with respect to the rotating shaft respectively. In the display device provided by this application, the display device has a first state and a second state. When the display device is in the first state, the area of the first display part is a. Since the first display part has a relatively large display area, it can effectively meet the usage requirements of users in medium and large-sized display application scenarios. When the display device is in the second state, a part of the display module is wound around the rotating shaft, the area of the first display part decreases, the space occupied by the display device decreases, and the space where the display device is located can be made more concise. Also, in the second state, since the display module further includes a second display part whose display surface has a different orientation from that of the first display part, the display device can realize a multi-sided display function, and the user can view the display content of the display device from various angles, enriching the application scenarios of the display device.

Brief Description of the Drawings

[0015] In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments are briefly introduced below, but it is obvious that the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts.

[0016] [Figure 1] 1 is a perspective view of a first state of a display device provided in Example 1 of the present application, viewed from a certain viewing angle. [Figure 2] FIG. 2 is a perspective view of the first state of the display device provided in the first embodiment of the present application, viewed from another viewing angle. [Figure 3] 1 is a schematic front cross-sectional view of a first state of a display device provided in Example 1 of the present application. [Figure 4] 1 is a schematic rear cross-sectional view of a first state of a display device provided in Example 1 of the present application. [Figure 5] 1 is a schematic right-side cross-sectional view of a first state of a display device provided in Example 1 of the present application; [Figure 6] FIG. 2 is a perspective view of a second state of the display device provided in Example 1 of the present application. [Figure 7] 2 is a schematic front cross-sectional view taken along line AA′ in a second state of the display device provided in Example 1 of the present application. FIG. [Figure 8] 10 is a schematic rear cross-sectional view taken along line BB' in a second state of the display device provided in Example 1 of the present application. FIG. [Figure 9] 10 is a schematic right-side cross-sectional view taken along line CC′ in a second state of the display device provided in Example 1 of the present application. FIG. [Figure 10] FIG. 2 is a schematic cross-sectional view of a third state of the display device provided in Example 1 of the present application. [Figure 11] FIG. 1 is a schematic cross-sectional view of a rotating shaft provided in Example 1 of the present application. [Figure 12] FIG. 10 is a schematic cross-sectional view of a first state of a display device provided in Example 2 of the present application. [Figure 13] FIG. 10 is a schematic cross-sectional view of a second state of the display device provided in Example 2 of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts are included in the scope of protection of the present application. Furthermore, it should be understood that the specific embodiments described herein are only used to explain and interpret the present application, and are not intended to limit the present application. In this application, unless otherwise specified, terms indicating directions such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or working state, specifically the directions shown in the drawings. "Inner" and "outer" refer to the outer shape of the device.

[0018] As shown in FIGS. 1 to 10, Example 1 of the present application provides a display device. The display device includes a housing 10, a reel assembly 20, a first cover 30, and a display module 40. The housing 10 includes a first side plate 11 and a second side plate 12. The first side plate 11 and the second side plate 12 are disposed opposite to each other. The reel assembly 20 includes a rotating shaft 21. The rotating shaft 21 is rotatably connected to the first side plate 11 and the second side plate 12 respectively. The first cover 30 is disposed on one side of the rotating shaft 21. The first cover 30 is movable in a direction approaching or departing from the rotating shaft 21. One end of the display module 40 is fixedly connected to the first cover 30, and the other end of the display module 40 is fixedly connected to the rotating shaft 21. The display module 40 includes a first display portion 41 connected to the first cover 30. When there is a first distance d1 between the first cover 30 and the rotating shaft 21, the area of the first display portion 41 is a. When there is a second distance d2 between the first cover 30 and the rotating shaft 21, the area of the first display portion 41 is b. The second distance d2 is smaller than the first distance d1, and b < a. The display module 40 further includes a first non-display portion 42 wound around the rotating shaft 21, and a second display portion 43 disposed between the first non-display portion 42 and the first display portion 41. The display surface of the second display portion 43 and the display surface of the first display portion 41 are located on different sides with respect to the rotating shaft 21 respectively.

[0019] In the display device provided herein, the display device has a first state and a second state. When the display device is in the first state, the area of ​​the first display unit 41 is a, and the first display unit 41 has a relatively large display area, which can effectively meet user usage requirements in medium to large display application scenarios. When the display device is in the second state, a portion of the display module 40 is wound around the rotating shaft 21, which reduces the area of ​​the first display unit 41 and the space occupied by the display device, making the space in which the display device is located more compact. In addition, in the second state, the display module 40 further includes a second display unit 43 whose display surface is oriented in a different direction from that of the first display unit 41. This allows the display device to achieve a multi-faceted display function, allowing users to view the display content of the display device from various angles, thereby enriching the application scenarios of the display device.

[0020] In some embodiments of the present application, when the display device is in the first state, the first cover 30 is in a state farthest from the rotation shaft 21 while ensuring normal function of other components within the display device, i.e., the first distance d1 is the maximum distance between the first cover 30 and the rotation shaft 21. In the first state, the display module 40 is not wound around the rotation shaft 21. However, in other embodiments of the present application, although a portion of the display module 40 may be wound around the rotation shaft 21 in the first state, the amount of the display module 40 wound around the rotation shaft 21 is the smallest in the first state compared to other states. In some embodiments of the present application, in the first state, the display module 40 may include a first non-display unit 42 wound around the rotation shaft 21 and a second display unit 43 disposed between the first non-display unit 42 and the first display unit 41, and the display surface of the second display unit 43 and the display surface of the first display unit 41 are located on different sides of the rotation shaft 21. That is, the display device can achieve a multi-screen display function in both the first state and the second state.

[0021] In some embodiments of the present application, when the display device is in the second state, the state of the first cover 30 is the state closest to the rotation axis 21 while ensuring the normal functions of other components in the display device. That is, the second distance d2 is the minimum distance between the first cover 30 and the rotation axis 21. Compared with other states, the amount of the display module 40 wound around the rotation axis 21 is the largest in the second state. In some embodiments of the present application, when there is a third distance d3 between the first cover 30 and the rotation axis 21, taking the display area of the first display portion 41 as c, the third distance d3 is greater than the second distance d2 and less than the first distance d1, that is, b < c < a. The display module 40 further includes a first non-display portion 42 wound around the rotation axis 21 and a second display portion 43 disposed between the first non-display portion 42 and the first display portion 41. The display surface of the second display portion 43 and the display surface of the first display portion 41 are located on different sides with respect to the rotation axis 21, respectively.

[0022] The display device provided in the present application further has a third state. In the third state, the third distance d3 is greater than the second distance d2 and less than the first distance d1. That is, the amount of the display module 40 wound around the rotation axis 21 in the third state is more than the amount of the display module 40 wound around the rotation axis 21 in the first state and less than the amount of the display module 40 wound around the rotation axis 21 in the second state. Accordingly, the display area of the first display portion 41 decreases. However, compared with the second state, the display area of the first display portion 41 in the third state is still relatively large. At the same time, the normal display of the second display portion 43 can be ensured. Therefore, the display device in the third state can realize a multi-faceted display function considering the display size. In some embodiments of the present application, the reel assembly 20 further includes a first roller 22 and a second roller 23, the first roller 22 and the second roller 23 being spaced apart and both being located on the side of the rotating shaft 21 away from the first cover 30, the first roller 22 being rotatably connected to the first side plate 11 and the second side plate 12, respectively, and the second roller 23 being rotatably connected to the first side plate 11 and the second side plate 12, respectively. Here, the display module 40 includes a first part 401 spanning between the first cover 30 and the first roller 22, and a second part 402 spanning between the rotation axis 21 and the second roller 23, and when there is a first distance d1 between the first cover 30 and the rotation axis 21, the first part 401 is the first display unit 41, and when there is a second distance d2 between the first cover 30 and the rotation axis 21, the first part 401 is the first display unit 41, and the second part 402 is the second display unit 43.

[0023] In the display device provided in the present application, the first roller 22 and the second roller 23 are arranged at an interval, and both are arranged on the side of the rotation shaft 21 away from the first cover 30, the first roller 22 is rotatably connected to the first side plate 11 and the second side plate 12, respectively, and the second roller 23 is rotatably connected to the first side plate 11 and the second side plate 12, respectively. Therefore, when the display module 40 is stretched or rolled during the movement of the first cover 30, the first roller 22 and the second roller 23 can support the display module 40, and both the first portion 401 and the second portion 402 of the display module 40 have stable shapes, so that a first distance d between the first cover 30 and the rotation shaft 21 is maintained. When there is a second distance d1 between the first cover 30 and the rotating shaft 21, the first display unit 41 formed by the first part 401 can have a flat display surface under the support of the first cover 30 and the first roller 22, and when there is a second distance d2 between the first cover 30 and the rotating shaft 21, the first display unit 41 formed by the first part 401 can have a flat display surface under the support of the first cover 30 and the first roller 22, and the second display unit 43 formed by the second part 402 can have a flat display surface under the support of the second roller 23 and the rotating shaft 21, thereby improving the display quality of the display device, making the stretching and rolling processes of the display module 40 smoother, and improving the usage stability and extending the usage life of the display device. Optionally, the first roller 22, the second roller 23 and the rotating shaft 21 are arranged parallel to each other, thereby ensuring that the first roller 22, the second roller 23 and the rotating shaft 21 rotate synchronously, and at the same time, making the stretching and rolling processes of the display module 40 smoother. Optionally, the first part 401 and the second part 402 are arranged parallel to each other, so that the display device is more suitable for the display requirements of consumers.

[0024] In some embodiments of the present application, the display module 40 further includes a third portion 403 spanning between the first roller 22 and the second roller 23, wherein when there is a second distance d2 between the first cover 30 and the rotation axis 21, the display module 40 further includes a third display portion 44 arranged between the first display portion 41 and the second display portion 43, and the display surfaces of the third display portion 44, the display surface of the first display portion 41, and the display surface of the second display portion 43 are each located on different sides of the rotation axis 21, and the third portion 403 is the third display portion 44.

[0025] In the display device provided herein, the third portion 403 is also part of the display module 40, and the display function area of ​​the display module 40 (i.e., all areas having a display function) is generally arranged continuously. Therefore, when there is a second distance d2 between the first cover 30 and the rotation axis 21, i.e., when the display device is in the second state, the third portion 403 can be used as a third display unit 44 having a display function, thereby further enhancing the multi-faceted display function of the display device. Optionally, the third portion 403 is perpendicular to the first portion 401 and the second portion 402. In some embodiments of the present application, the display module 40 further includes a first corner 404, the first corner 404 connecting the first portion 401 and the third portion 403, and the first corner 404 being attached to the first roller 22. Optionally, the arc angle of the first corner 404 is 90°. The display module 40 further includes a second corner 405, the second corner 405 connecting the second portion 402 and the third portion 403, and the second corner 405 being attached to the second roller 23. Optionally, the arc angle of the second corner 405 is 90°.

[0026] In the display device provided in the present application, the arc angle of the first corner 404 connecting the first portion 401 and the third portion 403 is 90°, and the arc angle of the second corner 405 connecting the second portion 402 and the third portion 403 is also 90°, so that the first portion 401 and the third portion 403 can be bent at a right angle, making the transition between the first portion 401 and the third portion 403 smoother, and the first portion 401 has a display surface perpendicular to the third portion 403; and the second portion 402 and the third portion 403 can be bent at a right angle, making the transition between the second portion 402 and the third portion 403 smoother, and the second portion 402 has a display surface perpendicular to the third portion 403. Furthermore, since the arc angle of the first corner 404 is 90° and the arc angle of the second corner 405 is also 90°, the third part 403 can be made parallel to the rotation axis 21. As a result, when there is a second distance d2 between the first cover 30 and the rotation axis 21, the third display part 44 formed by the third part 403 has a flat display surface parallel to the rotation axis 21, which further enriches the application scenarios of the display device and improves the display quality of the display device at other viewing angles (e.g., downward viewing angles or side viewing angles).

[0027] Of course, in other embodiments of the present application, the arc angle of the first corner 404 may be other angles such as 60°, 75°, etc. The arc angle of the second corner 405 may be other angles such as 60°, 75°, etc. In addition, in some embodiments of the present application, when there is a first distance d1 between the first cover 30 and the rotation axis 21, i.e., when the display device is in the first state, the third part 403 of the display module 40 may have a display function, i.e., when the display device is in the first state, the third part 403 is the third display unit 44.

[0028] In some embodiments of the present application, the display device further includes a support assembly 50, which includes a first support plate 51 and a second support plate 52, wherein the first support plate 51 is arranged on a side of the first portion 401 opposite the second portion 402 and is attached to the first portion 401, and the second support plate 52 is arranged on a side of the second portion 402 opposite the first portion 401 and is attached to the second portion 402. In the display device provided herein, the first support plate 51 is disposed on a side of the first portion 401 facing the second portion 402 and attached to the first portion 401, and supports the first portion 401, thereby further improving the flatness of the display surface of the first display unit 41. The second support plate 52 is disposed on a side of the second portion 402 facing the first portion 401 and attached to the second portion 402, and supports the second portion 402, thereby further improving the flatness of the display surface of the second display unit 43. Optionally, the first support plate 51 can be extended or shortened to effectively support not only the first display unit 41 having a relatively small display area b, but also the first display unit 41 having a relatively large display area a.

[0029] 1 to 11, in some embodiments of the present application, the rotating shaft 21 includes a rotating shaft body 211 and a coil spring 212, the rotating shaft body 211 has a cavity 2111, the coil spring 212 is disposed in the cavity 2111, when there is a first distance d1 between the first cover 30 and the rotating shaft 21, the coil spring 212 is in an extended state, and when there is a second distance d2 between the first cover 30 and the rotating shaft 21, the coil spring 212 is in a contracted state. In the display device provided in the present application, the coil spring 212 can provide a pulling force to one end of the display module 40 during the contraction and expansion process of the display module 40, resulting in better contact of the display module 40 with the rotating shaft 21, the first roller 22, and the second roller 23, and the first part 401, the second part 402, and the third part 403 always maintaining a pulling state, improving the flatness of the display surfaces of the first display unit 41, the second display unit 43, and the third display unit 44, and improving the display quality of the display device.

[0030] In some embodiments of the present application, the reel assembly 20 further includes a connecting link 24, wherein the connecting link 24 is connected to the first cover 30, and the connecting link 24 can be extended or shortened to move the first cover 30 toward or away from the rotation axis 21. In the display device provided herein, the connecting link 24 is connected to the first cover 30, and the connecting link 24 can be extended or shortened to move the first cover 30 toward or away from the rotation axis 21, and the display device can be freely switched between the first state and the second state. Specifically, when the length of the connecting link 24 in a direction perpendicular to the first cover 30 (i.e., the distance between the end of the connecting link 24 close to the first cover 30 and the end of the connecting link 24 away from the first cover 30) is at its maximum, the distance between the first cover 30 and the rotation axis 21 is a first distance d1, and when the length of the connecting link 24 in the direction perpendicular to the rotation axis 21 is its shortest, the distance between the first cover 30 and the rotation axis 21 is a second distance d2.

[0031] In some embodiments of the present application, the connecting link 24 includes a first connecting link 241, a second connecting link 242, a third connecting link 243, and a fourth connecting link 244, wherein the first connecting link 241 and the second connecting link 242 are arranged crosswise and rotatably connected to each other, the third connecting link 243 and the fourth connecting link 244 are arranged crosswise and rotatably connected to each other, one end of the third connecting link 243 is rotatably connected to one end of the first connecting link 241, the other end of the third connecting link 243 is rotatably connected to the first cover 30, one end of the fourth connecting link 244 is rotatably connected to one end of the second connecting link 242, and the other end of the fourth connecting link 244 is rotatably and slidably connected to the first cover 30. In the display device provided herein, the connecting link 24 includes a first connecting link 241 and a second connecting link 242 arranged crosswise, and a third connecting link 243 and a fourth connecting link 244 arranged crosswise, thereby forming a double-scissors connecting link structure, which improves the supporting stability of the first part 401 by the connecting link 24 and improves the display quality of the display device. In addition, one end of the fourth connecting link 244 is rotatably connected to one end of the second connecting link 242, and the other end of the fourth connecting link 244 is rotatably and slidably connected to the first cover 30. Therefore, by combining the rotating and sliding connecting method with the double-scissors connecting link structure, the contraction and expansion process of the display module 40 becomes smoother, and the user experience when the display device switches between the first state and the second state is improved.

[0032] In some embodiments of the present application, the connecting link 24 further includes a fixed link 245 and a slide link 246, one end of the fixed link 245 is fixedly connected to the first side plate 11, one end of the slide link 246 is slidably connected to the second side plate 12, and the other end of the fixed link 245 is slidably connected to the other end of the slide link 246. Here, the other end of the first connecting link 241 is rotatably connected to the fixed link 245, and the other end of the second connecting link 242 is rotatably connected to the slide link 246. In the display device provided herein, one end of the slide link 246 is slidably connected to the second side panel 12, and the other end of the fixed link 245 is slidably connected to the other end of the slide link 246, which makes the contraction and extension of the display module 40 smoother and improves the user experience when the display device switches between the first state and the second state. In addition, the other end of the first connecting link 241 is rotatably connected to the fixed link 245, and the other end of the second connecting link 242 is rotatably connected to the slide link 246, which makes the connection method of the connecting links 24 simpler and more efficient.

[0033] In some embodiments of the present application, the reel assembly 20 further includes a motor 25 , which is used to control the sliding link 246 to slide relative to the fixed link 245 . In the display device provided in the present application, the motor 25 can be controlled to cause the slide link 246 to slide relative to the fixed link 245, thereby improving the degree of automation of the display device when switching between a first state and a second state.

[0034] 9 , in some embodiments of the present application, when there is a second distance d2 between the first cover 30 and the rotation shaft 21 that is smaller than the first distance d1, the display module 40 further includes a first non-display unit 42 wound around the rotation shaft 21, and at least a portion of the first non-display unit 42 may have a different film layer structure from the second display unit 43, and the remaining portion of the first non-display unit 42 may have a similar film layer structure to the second display unit 43. Optionally, the first non-display unit 42 includes a first functional unit 421 and a second functional unit 422, and the first functional unit 421 may have the same film layer structure as one of the second functional units 422, and the film layer structure of one of the second functional units 422 may be a flexible substrate layer, and the second functional unit 422 may have the same film layer structure as the first display unit 41 and the second display unit 43. That is, the first functional unit 421 cannot realize a display function, but the second functional unit 422 can realize a display function, and the first functional unit 421 separates the rotating shaft 21 and the second functional unit 422. In the display device provided in the present application, the first functional unit 421 simplifies at least a part of the film layer structure of the display module 40, thereby reducing the manufacturing cost of the display module 40, and the first functional unit 421 can avoid the problem of damage to the second functional unit 422, which can realize a display function, due to direct contact between the rotating shaft 21 and the first functional unit 421, which is advantageous for extending the service life of the display device. In some embodiments of the present application, when there is a second distance d2 between the first cover 30 and the rotation shaft 21 that is smaller than the first distance d1, the display module 40 further includes a first non-display portion 42 wound around the rotation shaft 21, and the first non-display portion 42 may have the same film layer structure as the first display portion 41 and the second display portion 43. That is, when the first non-display portion 42 extends from the rotation shaft 21, the first non-display portion 42 is converted from a non-display area to a display area and can be converted into a display portion having a display function, that is, any area of ​​the display module 40 has the function of displaying an image. With this configuration, even when there is a first distance d1 between the first cover 30 and the rotation shaft 21, the multi-screen display function of the display device can be ensured.

[0035] In some embodiments of the present application, the display device further includes a third side plate 13 and a fourth side plate 14 arranged opposite to each other, the third side plate 13 being arranged on the display side of the first portion 401, and one end of the third side plate 13 being fixedly connected to the rotation shaft 21, and the fourth side plate 14 being arranged on a side of the second portion 402 away from the first portion 401, and one end of the fourth side plate 14 being fixedly connected to the rotation shaft 21. Optionally, the first side plate 11, the second side plate 12, the third side plate 13, and the fourth side plate 14 are integrally formed. Optionally, the first side plate 11, the second side plate 12, the rotation shaft 21, the third side plate 13, and the fourth side plate 14 are all transparent plates. In some embodiments of the present application, the display device further includes a second cover 60, which is positioned on a side of the reel assembly 20 away from the rotation axis 21 and is fixedly connected to the first side plate 11 and the second side plate 12.

[0036] In the display device provided in the present application, the second cover 60, which is positioned on the side away from the rotation axis 21 of the reel assembly 20, can cooperate with the first cover 30 to improve the sealing of the display device. In some embodiments of the present application, the second cover 60 includes a first second cover sub-portion 61 and a second second cover sub-portion 62, and the vertical distance between the surface of the first second cover sub-portion 61 away from the rotation axis 21 and the rotation axis 21 is smaller than the vertical distance between the surface of the second second cover sub-portion 62 away from the rotation axis 21 and the rotation axis 21. Therefore, a step is formed at the boundary between the first second cover sub-portion 61 and the second second cover sub-portion 62. Therefore, when the display device is in the second state, the first cover 30 descends to the step portion and contacts the first second cover sub-portion 61, and cooperates with the second cover 60 to seal the top of the display device and prevent water vapor and impurities from entering the display device.

[0037] In some embodiments of the present application, the height of the step is equal to the thickness of the first cover 30, so that when the display device is in the second state, the surface of the first cover 30 facing away from the rotation axis 21 and the surface of the second sub-part 62 of the second cover facing away from the rotation axis 21 are flush with each other, and the top of the display device is flat. In some embodiments of the present application, the first sub-part 61 of the second cover has an opening 611, and the connecting link 24 is arranged corresponding to the opening 611 in a direction perpendicular to the rotation axis 21, and is capable of expanding and contracting in a direction perpendicular to the first cover 30.

[0038] Example 2 FIG. 12 is a schematic cross-sectional view of the first state of the display device provided in Embodiment 2 of the present application, and FIG. 13 is a schematic cross-sectional view of the second state of the display device provided in Embodiment 2 of the present application. As shown in FIGS. 1 to 13, Embodiment 2 of the present application provides a display device, and the display device includes a housing 10, a reel assembly 20, a first cover 30, and a display module 40. The housing 10 includes a first side plate 11 and a second side plate 12. The first side plate 11 and the second side plate 12 are arranged opposite to each other. The reel assembly 20 includes a rotating shaft 21. The rotating shaft 21 is rotatably connected to the first side plate 11 and the second side plate 12 respectively. The first cover 30 is arranged on one side of the rotating shaft 21. The first cover 30 is movable in a direction approaching or departing from the rotating shaft 21. One end of the display module 40 is fixedly connected to the first cover 30, and the other end of the display module 40 is fixedly connected to the rotating shaft 21. The display module 40 includes a first display portion 41 connected to the first cover 30. When there is a first distance d1 between the first cover 30 and the rotating shaft 21, the area of the first display portion 41 is a. When there is a second distance d2 between the first cover 30 and the rotating shaft 21, the area of the first display portion 41 is b. The second distance d2 is smaller than the first distance d1, and b < a. The display module 40 further includes a first non-display portion 42 wound around the rotating shaft 21 and a second display portion 43 arranged between the first non-display portion 42 and the first display portion 41. The display surface of the second display portion 43 and the display surface of the first display portion 41 are located on different sides with respect to the rotating shaft 21 respectively. Note that since the structure of the display device provided in Embodiment 2 of the present application is the same as the structure of the display device provided in Embodiment 1 of the present application, in Embodiment 2 of the present application, the description of the same parts is omitted.

[0039] In some embodiments of the present application, the reel assembly 20 further includes a first roller 22, which is disposed on a side of the rotating shaft 21 away from the first cover 30, and which is rotatably connected to the first side plate 11 and the second side plate 12. Here, the display module 40 includes a first portion 401 that spans between the first cover 30 and the first roller 22 and a second portion 402 that spans between the rotating shaft 21 and the first roller 22, and when there is a first distance d1 between the first cover 30 and the rotating shaft 21, the first portion 401 becomes the first display unit 41, and when there is a second distance d2 between the first cover 30 and the rotating shaft 21, the first portion 401 becomes the first display unit 41 and the second portion 402 becomes the second display unit 43. Unlike the first embodiment, the display module 40 includes a first portion 401 that spans between the first cover 30 and the first roller 22 and a second portion 402 that spans between the rotation shaft 21 and the first roller 22. That is, the display device of the second embodiment can be provided with only one roller, thereby reducing the number of rollers and eliminating the need for the third portion 403, thereby reducing the space occupied by the display device. Furthermore, when the first cover 30 is separated from the rotation shaft 21 by a first distance d1, the first portion 401 becomes the first display unit 41. When the first cover 30 is separated from the rotation shaft 21 by a second distance d2, the first portion 401 becomes the first display unit 41 and the second portion 402 becomes the second display unit 43. Therefore, the display panel provided in the second embodiment can still achieve large-scale and multi-screen display effects.

[0040] Furthermore, in some embodiments of the present application, when there is a first distance d1 between the first cover 30 and the rotation shaft 21, i.e., in a first state, the display module 40 may include a first non-display unit 42 wound around the rotation shaft 21 and a second display unit 43 disposed between the first non-display unit 42 and the first display unit 41, and the display surfaces of the second display unit 43 and the first display unit 41 are located on different sides of the rotation shaft 21. In other words, the display device can achieve a multi-screen display function in both the first state and the second state. In some embodiments of the present application, the display module 40 further includes a third corner 406, which connects the first portion 401 and the second portion 402. Optionally, the arc angle of the third corner 406 may be 180°.

[0041] Briefly, the present application provides a display device, which includes a housing, a reel assembly, a first cover, and a display module. The housing includes a first side plate and a second side plate, and the first side plate and the second side plate are arranged opposite to each other. The reel assembly includes a rotating shaft, and the rotating shaft is rotatably connected to the first side plate and the second side plate respectively. The first cover is arranged on one side of the rotating shaft, and the first cover is movable in a direction approaching or departing from the rotating shaft. One end of the display module is fixedly connected to the first cover, and the other end of the display module is fixedly connected to the rotating shaft. The display module includes a first display portion connected to the first cover. When there is a first distance between the first cover and the rotating shaft, the area of the first display portion is set as a. When there is a second distance between the first cover and the rotating shaft, the area of the first display portion is set as b. The second distance is smaller than the first distance, and b < a. The display module further includes a first non-display portion wound around the rotating shaft and a second display portion arranged between the first non-display portion and the first display portion. The display surface of the second display portion and the display surface of the first display portion are located on different sides with respect to the rotating shaft respectively. In the display device provided by the present application, the display device has a first state and a second state. When the display device is in the first state, the area of the first display portion is set as a, and since the first display portion has a relatively large display area, the usage requirements of users in medium and large-sized display application scenarios can be effectively satisfied. When the display device is in the second state, a part of the display module is wound around the rotating shaft, the area of the first display portion decreases, the space occupied by the display device decreases, and the space where the display device is located can be made more concise. Also, in the second state, since the display module further includes a second display portion whose display surface has a different orientation from that of the first display portion, the display device can realize a multi-sided display function, and users can view the display content of the display device from various angles, enriching the application scenarios of the display device. The display devices provided in the examples of the present application have been introduced in detail above. In this specification, specific examples are used to explain the principles and embodiments of the present application, and the description of the above examples is only used to help understand the method and core concept of the present application. At the same time, those skilled in the art will be able to change the specific embodiments and application scope based on the idea of ​​the present application. In summary, the contents of this specification should not be understood as limiting the present application. [Explanation of symbols]

[0042] Reference symbols explained: Housing 10, first side plate 11, second side plate 12, third side plate 13, fourth side plate 14, reel assembly 20, rotating shaft 21, rotating shaft body 211, cavity 2111, coil spring 212, first roller 22, second roller 23, connecting link 24, first connecting link 241, second connecting link 242, third connecting link 243, fourth connecting link 244, fixed link 245, slide link 246, motor 25, first cover 30, display module 40, first display unit 41 , first non-display portion 42, first functional portion 421, second functional portion 422, second display portion 43, third display portion 44, first portion 401, second portion 402, third portion 403, first corner portion 404, second corner portion 405, third corner portion 406, support assembly 50, first support plate 51, second support plate 52, second cover 60, first sub-portion 61 of second cover, opening 611, second sub-portion 62 of second cover, first distance d1, second distance d2, third distance d3.

Claims

1. A display device, the display device includes a housing, a reel assembly, a first cover, and a display module; the housing includes a first side plate and a second side plate, the first side plate and the second side plate being disposed opposite each other; the reel assembly includes a rotating shaft, the rotating shaft being rotatably connected to the first side plate and the second side plate, the first cover is disposed on one side of the rotation shaft, and the first cover is movable in a direction toward or away from the rotation shaft; one end of the display module is fixedly connected to the first cover, and the other end of the display module is fixedly connected to the rotation shaft, and the display module includes a first display unit connected to the first cover; When there is a first distance between the first cover and the rotation shaft, an area of ​​the first display unit is defined as a; when there is a second distance between the first cover and the rotation shaft, an area of ​​the first display unit is b, the second distance is smaller than the first distance, b<a, the display module further includes a first non-display unit wound around the rotation shaft and a second display unit disposed between the first non-display unit and the first display unit, a display surface of the second display unit and a display surface of the first display unit are located on different sides of the rotation shaft, the reel assembly further includes a first roller and a second roller, the first roller and the second roller being spaced apart and both being located on a side of the rotation shaft away from the first cover, the first roller being rotatably connected to the first side plate and the second side plate, respectively, and the second roller being rotatably connected to the first side plate and the second side plate, respectively; wherein the display module includes a first portion spanning between the first cover and the first roller and a second portion spanning between the rotation shaft and the second roller, and when the first distance is between the first cover and the rotation shaft, the first portion is the first display unit, and when the second distance is between the first cover and the rotation shaft, the first portion is the first display unit and the second portion is the second display unit; the reel assembly further includes a connecting link disposed between the first roller and the second roller in a side cross-sectional view of the display device, the connecting link being connected to the first cover, the connecting link being capable of extending or shortening to move the first cover toward or away from the rotation axis; the connecting links include a first connecting link, a second connecting link, a third connecting link, a fourth connecting link, a fixed link, and a sliding link; the first connecting link and the second connecting link are disposed crosswise and rotatably connected to each other; the third connecting link and the fourth connecting link are disposed crosswise and rotatably connected, one end of the third connecting link is rotatably connected to one end of the first connecting link, the other end of the third connecting link is rotatably connected to the first cover, one end of the fourth connecting link is rotatably connected to one end of the second connecting link, and the other end of the fourth connecting link is rotatably and slidably connected to the first cover; One end of the fixed link is fixedly connected to the first side plate, one end of the slide link is slidably connected to the second side plate, and the other end of the fixed link is slidably connected to the other end of the slide link, wherein the other end of the first connecting link is rotatably connected to the fixed link, and the other end of the second connecting link is rotatably connected to the slide link. A display device characterized by:

2. When there is a third distance between the first cover and the rotation shaft, the display area of ​​the first display unit is c, the third distance is greater than the second distance and smaller than the first distance, and b<c<a.

2. The display device according to claim 1.

3. The display module further includes a third portion spanning between the first roller and the second roller, wherein: When the first cover and the rotation axis are spaced apart from each other by the second distance, the display module further includes a third display unit disposed between the first display unit and the second display unit, and a display surface of the third display unit, a display surface of the first display unit, and a display surface of the second display unit are located on different sides of the rotation axis, and the third portion is the third display unit.

2. The display device according to claim 1.

4. The display device further includes a support assembly, the support assembly including a first support plate and a second support plate, wherein: the first support plate is disposed on a side of the first portion opposite the second portion and is attached to the first portion; The second support plate is disposed on a side of the second portion opposite to the first portion and is attached to the second portion.

2. The display device according to claim 1.

5. the rotating shaft includes a rotating shaft body and a coil spring, the rotating shaft body having a cavity, and the coil spring is disposed in the cavity; When the first distance is between the first cover and the rotation shaft, the coil spring is in a stretched state; When the second distance is between the first cover and the rotation shaft, the coil spring is in a contracted state.

2. The display device according to claim 1.

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