Display device

Abstract

The invention discloses a display device, and belongs to the technical field of display. The display device comprises a first shell, a second shell, a third shell and a flexible display panel. After the second shell and the third shell slide in the direction away from the first shell, the display face of the flat panel display part, most of the area in the first curled display part and most of the area in the second curled display part are located on the same plane, and the size of the area, used for displaying pictures, of the flexible display panel is large. After the second shell and the third shell slide in the direction close to the first shell, the first curled display part can slide into the second shell, and the second curled display part can slide into the third shell, so that the size of an area, used for displaying pictures, in the flexible display panel is small. Therefore, when the display device is in the contracted state, the display device has a small size so as to be convenient to carry, and when the display device is in the unfolded state, the display device also has a display surface with a large size so as to be used for picture display.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] Currently, display devices may use flexible display panels as display screens. Compared with traditional display panels, flexible display panels have advantages such as being deformable, bendable, and having good flexibility.

[0003] The flexible display panel in the display device can be unfolded or rolled up under the drive of the housing, so that the display device has an unfolded state and a retracted state, thereby realizing the size adjustment function of the display surface of the display device. The larger the ratio of the size of the display surface when the display device is in the unfolded state to the size of the display surface when the display device is in the retracted state, the smaller the volume of the display device in the retracted state, and the larger the size of the display surface of the display device in the unfolded state.

[0004] However, the ratio of the size of the display surface of the current display device when it is in the expanded state to the size of the display surface of the display device when it is in the collapsed state is relatively small, and cannot meet the demand that the display device has a smaller volume and a larger display area at the same time. Summary of the invention

[0005] The embodiment of the present application provides a display device. It can solve the problem that the ratio of the size of the display surface of the display device in the unfolded state to the size of the display surface of the display device in the collapsed state is small. The technical solution is as follows:

[0006] A display device is provided, comprising: a first housing, a second housing, a third housing and a flexible display panel;

[0007] The second shell and the third shell are respectively distributed on both sides of the first shell in the first direction, and the second shell and the third shell are both slidably connected to the first shell;

[0008] The flexible display panel comprises: a plane display portion, and a first rolled display portion and a second rolled display portion located on both sides of the plane display portion in the first direction; the plane display portion is fixed on the second shell; the first rolled display portion comprises: a first plane portion arranged in parallel with the plane display portion, and a first bent portion located between the first plane portion and the plane display portion, the first bent portion being rolled up on a side of the second shell away from the first shell; the second rolled display portion comprises: a second plane portion arranged in parallel with the plane display portion, and a second bent portion located between the second plane portion and the plane display portion, the second bent portion being rolled up on a side of the third shell away from the first shell;

[0009] Wherein, the bending radius of the first curved portion is smaller than the bending radius of the second curved portion; and after the display device is in a retracted state, in a direction perpendicular to the planar display portion, at least part of the first planar portion is located between the planar display portion and the second planar portion.

[0010] Optionally, the second shell includes: a first mounting shell and two first track members, the two first track members are fixedly connected to two ends of the first mounting shell in the second direction; the first bent portion is wound on a side of the first mounting shell away from the first shell;

[0011] The third housing comprises: a second mounting housing and two second track members, the two second track members are arranged in the second direction; the two second track members are fixedly connected to two ends of the second mounting housing in the second direction; the second curved portion is wound on a side of the second mounting housing away from the first housing;

[0012] Among them, the two first track members are used for sliding connection with the first curled display part, and the two second track members are used for sliding connection with the second curled display part; for one first track member and one second track member distributed on the same side of the display device, the first track member and the second track member are staggered in the second direction; and in the second direction, the two first track members are distributed between the two second track members; the second direction is parallel to the planar display part and intersects with the first direction.

[0013] Optionally, the display device further comprises: a plurality of first support bars arranged in an array, and a plurality of second support bars arranged in an array; the length direction of the first support bars and the length direction of the second support bars are both parallel to the second direction;

[0014] The plurality of first support bars are fixedly connected to the back surface of the first curled display portion, and two ends of the first support bars are slidably connected to the two first track members respectively;

[0015] The plurality of second support bars are fixedly connected to the back surface of the second curled display portion, and two ends of the second support bars are respectively slidably connected to the two second track members.

[0016] Optionally, the first support bar comprises: a first support bar body and two first sliding protrusions; the first support bar body is fixedly connected to the back side of the first curled display part; the two first sliding protrusions are both fixedly connected to a side of the first support bar body away from the first curled display part, and the two first sliding protrusions are respectively slidably connected to the two first track members;

[0017] Wherein, in the second direction, the length of the first support bar body is greater than the distance between the two first track members; and the end of the first support bar body protrudes from the first track members distributed at corresponding positions.

[0018] Optionally, the first track member includes: a first sub-track and a second sub-track arranged in the second direction, and a first sliding groove is provided between the first sub-track and the second sub-track;

[0019] At least a portion of the first sliding protrusion is located in the first sliding groove and is slidably connected to the first sliding groove; the first support bar body is in sliding contact with the outer side surfaces of the first sub-rail and the second sub-rail.

[0020] Optionally, the first slide groove comprises: a first slide groove body, and a first limiting groove and a second limiting groove connected with the first slide groove body in the second direction; the first slide groove body is distributed in the gap between the first sub-rail and the second sub-rail, the first limiting groove is distributed on a side of the first sub-rail member facing the second sub-rail member, and the second limiting groove is distributed on a side of the second sub-rail member facing the first sub-rail member;

[0021] The first sliding protrusion comprises: a first slider and a first rod; the first slider is fixedly connected to a side of the first support bar body away from the first curled display portion; the first rod is fixedly connected to a side of the first slider away from the first support bar body, and in the second direction, both ends of the first rod protrude from the first slider;

[0022] Among them, at least part of the first sliding block is located in the first sliding groove body, one end of the first rod body protruding relative to the first sliding block is located in the first limiting groove, and the other end of the first rod body protruding relative to the first sliding block is located in the second limiting groove.

[0023] Optionally, the second housing further comprises: at least one first auxiliary track member located between the two first track members, one end of the first auxiliary track member being fixedly connected to the first mounting shell;

[0024] The first support bar further includes: at least one first auxiliary sliding protrusion fixedly connected to a side of the first support bar body away from the first curled display portion, and the at least one first auxiliary sliding protrusion is slidingly connected to the at least one first auxiliary track member in a one-to-one correspondence.

[0025] Optionally, the second support bar includes: a second support bar body and two second sliding protrusions; the second support bar body is fixedly connected to the back of the second curled display portion; the two second sliding protrusions are respectively fixedly connected to both ends of the second support bar body, and the two second sliding protrusions are respectively slidably connected to the two second track members;

[0026] Wherein, in the second direction, the length of the second support bar body is less than or equal to the distance between the two second track members.

[0027] Optionally, the second rail member has a second slide groove on a side facing the first rail member; at least a portion of the second sliding protrusion is located in the second slide groove and is slidably connected to the second slide groove.

[0028] Optionally, the third housing further comprises: at least one second auxiliary track member located between the two second track members, one end of the second auxiliary track member being fixedly connected to the second mounting shell;

[0029] The second support bar also includes: at least one second auxiliary sliding protrusion fixedly connected to the side of the second support bar body away from the second curled display part, and the at least one second auxiliary sliding protrusion is slidingly connected to the at least one second auxiliary track member in a one-to-one correspondence.

[0030] Optionally, when the second shell includes at least one first auxiliary track component, the at least one first auxiliary track component corresponds to the at least one second auxiliary track component one by one, and the corresponding first auxiliary track components and second auxiliary track components are staggered in the second direction.

[0031] Optionally, a distance between the corresponding first auxiliary rail members and the second auxiliary rail members in the second direction is less than or equal to a distance between the first rail member and the second rail member distributed on the same side of the display device in the second direction.

[0032] Optionally, the length of the first support bar body in the first support bar is equal to the length of the second support bar body in the second support bar.

[0033] Optionally, the flexible display panel further comprises: a non-display portion located on a side of the first curled display portion away from the planar display portion;

[0034] The display device further includes: a support plate and a circuit board; the support plate is slidably connected to the second shell, and the support plate has a support surface, and the support surface is fixedly connected to the back surface of the non-display part; the circuit board is fixed on the support surface.

[0035] Optionally, the support plate has an avoidance hole, and the avoidance hole penetrates the support plate in a direction perpendicular to the planar display part;

[0036] The circuit board comprises: a circuit board body and components; the circuit board body is fixed on the support surface, the components are fixed on a side of the circuit board body facing the support plate, and at least part of the components are located in the avoidance hole.

[0037] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0038] The flexible display panel in the display device can be normally unfolded and retracted, so that the display device is in an unfolded state and a retracted state. After the second shell and the third shell slide in a direction away from the first shell at the same time so that the display device is in an unfolded state, the display surface of the planar display part can be located in the same plane as most of the areas in the first curled display part and most of the areas in the second curled display part, so as to display the picture at the same time, so that the size of the area used for displaying the picture on the flexible display panel is larger. After the second shell and the third shell slide in a direction close to the first shell at the same time so that the display device is in a retracted state, the first curled display part can slide into the second shell, and the second curled display part can slide into the third shell, so that only the planar display part in the flexible display panel can be used to display the picture, thereby making the size of the area used for displaying the picture in the flexible display panel smaller. In this way, the ratio between the size of the display surface when the display device is in an unfolded state and the size of the display surface when the display device is in a retracted state is larger, so that the display device has a smaller volume in a retracted state for easy carrying, and the display device also has a larger display surface for picture display in an unfolded state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 is a top view of a display device provided by an embodiment of the present application in a retracted state and an expanded state;

[0041] Figure 2 is a cross-sectional view of a display device provided by an embodiment of the present application in a retracted state and an expanded state;

[0042] Figure 3 is a top view of a partial structure of a display device provided by an embodiment of the present application when it is in an unfolded state;

[0043] Figure 4 is a top view of a partial structure of a display device provided by an embodiment of the present application when it is in a retracted state;

[0044] Figure 5 is a structural schematic diagram of a part of the structure of a display device provided by an embodiment of the present application when it is in an unfolded state;

[0045] Figure 6 is a structural schematic diagram of a part of the structure of a display device provided by an embodiment of the present application when it is in a retracted state;

[0046] Figure 7 is a cross-sectional view of a display device provided by an embodiment of the present application when it is in a retracted state;

[0047] Figure 8 is a cross-sectional view of a first support bar provided in an embodiment of the present application;

[0048] Fig. 9 is a structural schematic diagram of a first track member provided in an embodiment of the present application;

[0049] Fig.10 is a cross-sectional view of a first track member provided in an embodiment of the present application;

[0050] Fig.11 is a cross-sectional view of another first track member provided in an embodiment of the present application;

[0051] Fig.12 is a structural schematic diagram of a first track member provided in an embodiment of the present application;

[0052] Fig.13 is a structural schematic diagram of a second support bar provided in an embodiment of the present application;

[0053] Fig.14 is a cross-sectional view of a second track member provided in an embodiment of the present application;

[0054] Fig.15 is a structural schematic diagram of a second track member provided in an embodiment of the present application;

[0055] Fig.16 is a cross-sectional view of another display device provided by an embodiment of the present application;

[0056] Fig.17 It is a partial top view of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0058] The present application provides a display device, which can be any product or component with display and scrolling functions, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. Figure 1 , Figure 1 It is a top view of a display device provided in an embodiment of the present application in a contracted state and an expanded state. The display device in the present application may include a first shell 100, a second shell 200, a third shell 300 and a flexible display panel 400.

[0059] The second shell 200 and the third shell 300 in the display device may be respectively distributed on both sides of the first shell 100 in the first direction X, and both the second shell 200 and the third shell 300 may be slidably connected to the first shell 100 .

[0060] Please refer to Figure 1 and Figure 2 , Figure 2 4 is a cross-sectional view of a display device in a contracted state and an expanded state provided by an embodiment of the present application. The flexible display panel 400 in the display device may include: a planar display portion 401, and a first rolled display portion 402 and a second rolled display portion 403 located on both sides of the planar display portion 401 in a first direction X. The planar display portion 401 in the flexible display panel 400 may be fixed to the first housing 100.

[0061] The first rolled display portion 402 in the flexible display panel 400 may include: a first planar portion 4021 arranged parallel to the planar display portion 401, and a first bent portion 4022 located between the first planar portion 4021 and the planar display portion 401, and the first bent portion 4022 may be rolled up on a side of the second shell 200 away from the first shell 100.

[0062] The second rolled display portion 403 in the flexible display panel 400 may include: a second planar portion 4031 arranged parallel to the planar display portion 401, and a second bent portion 4032 located between the second planar portion 4031 and the planar display portion 401, and the second bent portion 4032 may be rolled up on a side of the third shell 300 away from the first shell 100.

[0063] Here, when the second shell 200 in the display device slides in a direction away from the first shell 100, the second shell 200 can drive the first curled display portion 402 in the flexible display panel 400 to slide out of the second shell 200, and make the display surface of the planar display portion 401 in the flexible display panel 400 and most of the area of ​​the first curled display portion 402 located in the same plane (so that the size of the area of ​​the flexible display panel used to display the picture is increased), and used to display the picture. When the second shell 200 in the display device slides in a direction close to the first shell 100, the second shell 200 can drive the first curled display portion 402 in the flexible display panel 400 to slide into the second shell 200, so that the size of the area of ​​the flexible display panel 400 used to display the picture is reduced.

[0064] Similarly, when the third shell 300 in the display device slides in a direction away from the first shell 100, the third shell 300 can drive the second rolled display portion 403 in the flexible display panel 400 to slide out of the third shell 300, and make the display surface of the planar display portion 401 in the flexible display panel 400 and most of the second rolled display portion 402 in the flexible display panel 400 be located in the same plane (so that the size of the area of ​​the flexible display panel used to display the picture is increased), and used to display the picture. When the third shell 300 in the display device slides in a direction close to the first shell 100, the third shell 300 can drive the second rolled display portion 403 in the flexible display panel 400 to slide into the third shell 300, so that the size of the flexible display panel 400 used to display the picture is reduced.

[0065] In this application, if Figure 2As shown, the bending radius R1 of the first curved portion 4022 in the first rolled display portion 402 may be smaller than the bending radius R2 of the second curved portion 4022 in the second rolled display portion 402. And after the display device is in the retracted state, in the direction perpendicular to the planar display portion 401, at least part of the first planar portion 4021 in the first rolled display portion 402 may be located between the planar display portion 401 and the second planar portion 4022 in the second rolled display portion 403, that is, after the display device is in the retracted state, the first planar portion 4021 in the first rolled display portion 402 and the second planar portion 4031 in the second rolled display portion 403 will not interfere with each other.

[0066] In this way, when the second shell 200 and the third shell 300 in the display device slide toward the direction close to the first shell 100 at the same time, the first plane portion 4021 in the first curled display portion 402 sliding into the second shell 200 and the second plane portion 4031 in the second curled display portion 403 sliding into the third shell 300 will not interfere with each other, so that in a direction perpendicular to the plane display portion 401, the first plane portion 4021 can slide normally between the second plane portion 4031 and the plane display portion 401, until the second shell 200 and the third shell 300 can no longer slide in the direction close to the first shell 100, at least part of the first plane portion 4021 is located between the second plane portion 4031 and the plane display portion 401, so that the display device is in a retracted state.

[0067] Similarly, when the second shell 200 and the third shell 300 in the display device slide in the direction away from the first shell 100 at the same time, there will be no interference between the first curled display part 402 sliding out of the second shell 200 and the second curled display part 403 sliding out of the third shell 300, so that the display device can be unfolded normally. Until the second shell 200 and the third shell 300 can no longer slide in the direction away from the first shell 100, the display device can be in the unfolded state.

[0068] To this end, the flexible display panel 400 in the display device can be normally unfolded and retracted, so that the display device is in an unfolded state and a retracted state. After the second shell 200 and the third shell 300 slide in a direction away from the first shell 100 at the same time so that the display device is in an unfolded state, the display surface of the flat display portion 401 can be located in the same plane as most of the areas in the first rolled display portion 402 and most of the areas in the second rolled display portion 403, so that the screen can be displayed at the same time, so that the size of the area used for displaying the screen in the flexible display panel 400 is larger. After the second shell 200 and the third shell 300 slide in a direction close to the first shell 100 at the same time so that the display device is in a retracted state, the first rolled display portion 401 can slide into the second shell 200, and the second rolled display portion 402 can slide into the third shell 300, so that only the flat display portion 401 in the flexible display panel 400 can be used to display the screen, thereby making the size of the area used for displaying the screen in the flexible display panel 400 smaller. In this way, the ratio between the size of the display surface when the display device is in the expanded state and the size of the display surface when the display device is in the collapsed state is large, so that the display device has a smaller volume in the collapsed state for easy carrying, and the display device also has a larger display surface for image display when it is in the expanded state.

[0069] It should be noted that, by setting the bending radius R1 of the first curved portion 4022 in the first curled display portion 402 in the display device to be smaller than the bending radius R2 of the second curved portion 4022 in the second curled display portion 402, and after the display device is in the retracted state, in the direction perpendicular to the planar display portion 401, at least a portion of the first planar portion 4021 in the first curled display portion 402 can be located between the planar display portion 401 and the second planar portion 4022 in the second curled display portion 403, so that the ratio between the size of the display surface when the display device is in the expanded state and the size of the display surface when the display device is in the retracted state can be 3. In this way, the display device has a smaller volume in the retracted state for easy carrying, and also has a larger display surface for picture display when the display device is in the expanded state.

[0070] In summary, the embodiment of the present application provides a display device, including: a first shell, a second shell, a third shell and a flexible display panel. The flexible display panel in the display device can be normally unfolded and retracted, so that the display device is in an unfolded state and a retracted state. And after the second shell and the third shell slide in a direction away from the first shell at the same time so that the display device is in an unfolded state, the display surface of the planar display part can be located in the same plane as most of the areas in the first curled display part and most of the areas in the second curled display part, so as to display the picture at the same time, so that the size of the area used for displaying the picture on the flexible display panel is larger. After the second shell and the third shell slide in a direction close to the first shell at the same time so that the display device is in a retracted state, the first curled display part can slide into the second shell, and the second curled display part can slide into the third shell, so that only the planar display part of the flexible display panel can be used to display the picture, thereby making the size of the area used to display the picture in the flexible display panel smaller. In this way, the ratio between the size of the display surface when the display device is in the expanded state and the size of the display surface when the display device is in the collapsed state is large, so that the display device has a smaller volume in the collapsed state for easy carrying, and the display device also has a larger display surface for image display when it is in the expanded state.

[0071] Optional, please refer to Figure 3 , Figure 3 1 is a top view of a partial structure of a display device provided by an embodiment of the present application when it is in an unfolded state. The second shell 200 in the display device may include: a first mounting shell 201 and two first track members 202. The first track member 202 in the second shell 200 may be fixedly connected to both ends of the first mounting shell 201 in the second direction Y, that is, both ends of the second shell 200 distributed in the second direction Y may have a first track member 202. The first curved portion 4022 in the first rolled display portion 402 may be rolled on a side of the first mounting shell 201 away from the first shell 100. The two first track members 202 in the second shell 200 may be slidably connected to the first rolled display portion 402.

[0072] In this way, when the second housing 200 slides in a direction away from the first housing 100, the first curved portion 4022 wound on the side of the first mounting housing 201 away from the first housing 100 will also slide in a direction away from the first housing 100, thereby driving the first rolled display portion 402 to slide relative to the two first rail members 202 to slide out of the second housing 200, so that the portion of the first rolled display portion 402 located in the same plane as the planar display portion 401 gradually increases. When the second housing 200 slides in a direction close to the first housing 100, the first curved portion 4022 wound on the side of the first mounting housing 201 away from the first housing 100 will also slide in a direction close to the first housing 100, thereby driving the first rolled display portion 402 to slide relative to the two first rail members 202 to slide into the second housing 200, so that the portion of the first rolled display portion 402 located in the same plane as the planar display portion 401 gradually decreases.

[0073] The third housing 300 in the display device may include: a second mounting housing 301 and two second track members 302. The two second track members 302 in the third housing 300 may be arranged in the second direction Y, and the two second track members 302 in the third housing 300 may be fixedly connected to both ends of the second mounting housing 301 in the second direction Y, that is, both ends of the third housing 300 in the second direction Y may have second track members 302. The second curved portion 4032 in the second rolled display portion 403 may be rolled on a side of the second mounting housing 301 away from the first housing 100. The two second track members 302 in the third housing 300 are used for sliding connection with the second rolled display portion 403.

[0074] In this way, when the third housing 300 slides in a direction away from the first housing 100, the second curved portion 4032 wound on the side of the second mounting housing 301 away from the first housing 100 will also slide in a direction away from the first housing 100, thereby driving the second rolled display portion 403 to slide relative to the two second track members 302 to slide out of the third housing 300, so that the portion of the second rolled display portion 403 that is located in the same plane as the flat display portion 401 gradually increases. When the third housing 300 slides in a direction close to the first housing 100, the second curved portion 4032 wound on the side of the second mounting housing 301 away from the first housing 100 will also slide in a direction close to the first housing 100, thereby driving the second rolled display portion 403 to slide relative to the two second track members 302 to slide into the third housing 300, so that the portion of the first rolled display portion 403 that is located in the same plane as the flat display portion 401 gradually decreases.

[0075] Optional, such as Figure 3 and Figure 4 As shown, Figure 4 It is a top view of a partial structure of a display device provided by an embodiment of the present application when it is in a retracted state, the two ends of the second housing 200 distributed in the second direction Y are the two ends of the display device distributed in the second direction Y, and the two ends of the third housing 300 distributed in the second direction Y are the two ends of the display device distributed in the second direction Y. In this way, the two ends of the display device distributed in the second direction Y can each have a first track member 202 and a second track member 302.

[0076] Here, for a first track member 202 and a second track member 302 distributed on the same side of the display device, the first track member 202 can be staggered with the second track member 302 in the second direction Y, that is, in the second direction Y, there is a certain distance between a first track member 202 and a second track member 302 distributed on the same side of the display device. And in the second direction Y, two first track members 201 can be distributed between two second track members 302. In this way, a first track member 202 and a second track member 302 distributed on the same side of the display device will not overlap in the direction perpendicular to the plane display part 401, so that while ensuring that the display device in the present application can be normally expanded and contracted, the thickness of the display device is also small.

[0077] It should be noted that the second direction Y may be parallel to the planar display portion 401 and may intersect with the first direction X. For example, the second direction Y may intersect with the first direction X perpendicularly. Here, the first direction X is the direction in which the second housing 200 and the third housing 300 slide relative to the first housing 100, and the second direction Y may be perpendicular to the direction in which the second housing 200 and the third housing 300 slide relative to the first housing 100.

[0078] Optional, such as Figure 5 , Figure 6 and Figure 7 As shown, Figure 5 is a structural diagram of a part of the structure of a display device provided by an embodiment of the present application when it is in an unfolded state, Figure 6 is a structural schematic diagram of a part of the structure of a display device provided by an embodiment of the present application when it is in a retracted state, Figure 7 is a cross-sectional view of a display device provided by an embodiment of the present application in a retracted state, and the display device may further include: a plurality of first support bars 500 arranged in an array, and a plurality of second support bars 600 arranged in an array. The length direction of the first support bar 500 and the length direction of the second support bar 600 may both be parallel to the second direction Y.

[0079] The plurality of first support bars 500 in the display device may be fixedly connected to the back of the first rolled display portion 402, and the two ends of the first support bar 500 may be respectively slidably connected to the two first track members 202 in the second housing 200. In this way, when the second housing 200 slides relative to the first housing 100, the first rolled display portion 402 may slide out of the second housing 200 or slide into the second housing 200 through the sliding of the two ends of the first support bar 500 relative to the first track members 202.

[0080] The plurality of second support bars 600 in the display device can be fixedly connected to the back of the second rolled display portion 403, and the two ends of the second support bar 600 are respectively slidably connected to the two second track members 302. In this way, when the third housing 300 slides relative to the first housing 100, the second rolled display portion 403 can slide out of the third housing 300 or slide into the third housing 300 through the sliding of the two ends of the second support bar 600 relative to the second track members 302.

[0081] To this end, not only can the flexible display panel 400 be effectively supported by multiple first support bars 500 and multiple second support bars 600, but also the cooperation of multiple first support bars 500 with the two first track members 202 in the second shell 200, and the cooperation of multiple second support bars 600 with the two second track members 302 in the third shell 300 can limit the freedom of the flexible display panel 400 in a direction perpendicular to the planar display part 401, thereby effectively reducing the probability of the flexible display panel 400 having unevenness, so that the overall flatness of the flexible display panel 400 is better, and thus the display effect of the display device is better.

[0082] It should be noted that the flexible display panel 400 usually has a display surface and a non-display surface that are relatively arranged. For the convenience of subsequent description, the front side of the flexible display panel 400 is the side where the display surface is located, and the back side of the flexible display panel 400 is the side where the non-display surface is located.

[0083] Optional, such as Figure 7 and Figure 8 As shown, Figure 8: is a cross-sectional view of a first support bar provided in an embodiment of the present application, and the first support bar 500 in the display device may include: a first support bar body 501 and two first sliding protrusions 502. The first support bar body 501 in the first support bar 500 may be fixedly connected to the back of the first curled display portion 402. The two first sliding protrusions 502 in the first support bar 500 may both be fixedly connected to the side of the first support bar body 501 away from the first curled display portion 402, and the two first sliding protrusions 502 in the first support bar 500 may be respectively slidably connected to the two first track members 202 in the second shell 200. In this way, through the sliding connection of the two first sliding protrusions 502 with the two first track members 202, the first support bar 500 may be slidably connected to the two first track members 202, and then the first curled display portion 402 may be slidably connected to the two first track members 202.

[0084] Among them, Figure 5 and 6 As shown, in the second direction Y, the length of the first support body 501 can be greater than the distance between the two first track members 202, and the end of the first support bar body 501 can protrude from the first track members 202 distributed at the corresponding position. In this way, in the second direction Y, the portion of the first support bar body 501 protruding from the first track member 202 can also be used to support the first curled display portion 402, so that the display surface size of the flexible display panel 400 in the second direction Y is larger, and the size of the frame of the display device in the second direction Y is narrower, and the screen ratio of the display device is larger.

[0085] Optional, please refer to Fig. 9 , Fig.10 and Fig.11 , Fig. 9 is a schematic structural diagram of a first track member provided in an embodiment of the present application, Fig.10 is a cross-sectional view of a first track member provided in an embodiment of the present application, Fig.11 : is a cross-sectional view of another first track member provided in an embodiment of the present application, wherein the first track member 202 may include: a first sub-track 2021 and a second sub-track 2022 arranged in the second direction Y, and a first slide groove S1 is provided between the first sub-track 2021 and the second sub-track 2022. At least a portion of the first sliding protrusion 502 in the first support bar 500 may be located in the first slide groove S1, and may be slidably connected to the first slide groove S1. And the first support bar body 501 may be in sliding contact with the outer side surfaces of the first sub-track 2021 and the second sub-track 2022. In this way, by sliding the first sliding protrusion 502 in the first slide groove S1 of the first track member 202, the sliding of the first support bar 500 relative to the first track member 202 may be achieved.

[0086] Optional, such as Fig. 9 , Fig.10 and Fig.11 As shown, the first slide groove S1 may include: a first slide groove body S11, and a first limiting groove S12 and a second limiting groove S13 connected to the first slide groove body S11 in the second direction Y. The first slide groove body S11 may be distributed in the gap between the first sub-rail 2021 and the second sub-rail S12, the first limiting groove S12 may be distributed on a side of the first sub-rail 2021 facing the second sub-rail 2022, and the second limiting groove S13 may be distributed on a side of the second sub-rail 2022 facing the first sub-rail 2021.

[0087] The first sliding protrusion 502 in the first support bar 500 may include: a first slider 5021 and a first rod 5022. The first slider 5021 in the first sliding protrusion 5021 may be fixedly connected to a side of the first support bar body 502 away from the first curled display portion 402, and the first rod 5022 may be fixedly connected to a side of the first slider 5021 away from the first support bar body 501. In the second direction Y, both sides of the first rod 5022 may protrude from the first slider 5021.

[0088] Among them, at least part of the first slider 5021 can be located in the first slide groove body S11, one end of the first rod body 5022 protruding relative to the first slider 5021 can be located in the first limiting groove S12, and the other end of the first rod body 5022 protruding relative to the first slider 5021 can be located in the second limiting groove S13. In this way, by the sliding of the first slider 5021 in the first slide groove body S11, the two ends of the first rod body 5022 protruding relative to the first slider 5021 slide in the first limiting groove S12 and the second limiting groove S13 respectively, the first sliding protrusion can slide in the first slide groove S1, and then the first support bar 500 can slide relative to the first track member 202.

[0089] And because the two end portions of the first rod body 5022 protruding relative to the first slider 5021 are respectively located in the first limiting groove S12 and the second limiting groove S13, the first sliding protrusion 502 will not fall off from the first sliding groove S1 during the sliding of the first sliding protrusion 502 in the first sliding groove S1, thereby ensuring the normal sliding of the first sliding protrusion 502 in the first sliding groove S1, so that the first curled display portion 402 can normally slide out of the second shell 200, or slide into the second shell 200, thereby allowing the display device to normally unfold and retract.

[0090] Please note that, please refer to Fig.12 , Fig.122 is a schematic diagram of the structure of a first track member provided in an embodiment of the present application. The first track member 202 can be divided into a first plane track B1 and a second plane track B2 which are arranged opposite to each other in a direction perpendicular to the plane display portion 401, and a first curved track B3 which is located between the first plane track B1 and the second plane track B2 and whose two ends are connected to the first plane track B1 and the second plane track B2 respectively. The first track member B1 is closer to the plane display portion 401 than the second track member B2.

[0091] After the second housing 200 slides in a direction away from the first housing 100, the first sliding protrusions 502 of most of the first support bars 500 can be located in the first slide groove S1 of the first plane track B1, so that most of the first rolled display portion 402 can be supported by the first plane track B1, and thus most of the first rolled display portion 402 can be in the same plane as the plane display portion 401. After the second housing 200 slides in a direction close to the first housing 100, the first sliding protrusions 502 of most of the first support bars 500 can be located in the first slide groove S1 of the second plane track B2, so that most of the first rolled display portion 402 can be retracted into the second housing 200.

[0092] It should be noted that when the display device is placed flat and the plane of the flat display part 401 is facing upward in the direction of gravity, the first flat track member B1 can be located above the second flat track member B2. Since the first support bar 500 is located on the side of the first track member 202 away from the first curled display part 402, the first support bar 500 can be located below the first flat track member B1 in the direction of gravity, and since the first limiting groove S12 and the second limiting groove S13 of the first flat track member B1 can limit the two ends of the first rod body 5022 of the first sliding protrusion 502 in the first support bar 500, the first sliding protrusion 502 will not fall off from the first sliding groove S1 of the first flat track member B1. Similarly, when the display device is placed flat and the plane of the flat display part 401 is facing downward in the direction of gravity, the second flat track member B2 can be located above the second flat track member B1. Since the first limiting groove S12 and the second limiting groove S13 of the second planar track component B2 can limit the two ends of the first rod body 5022 of the first sliding protrusion 502 in the first support bar 500, the first sliding protrusion 502 will not fall off from the first sliding groove S1 of the second planar track component B2.

[0093] Optional, such as Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the second shell 200 may further include: at least one first auxiliary rail member 203 located between the two first rail members 202 , and one end of the first auxiliary rail member 203 may be fixedly connected to the first installation shell 201 .

[0094] like Figure 8 As shown, the first support bar 500 may also include: at least one first auxiliary sliding protrusion 503 fixedly connected to the side of the first support bar body 501 facing away from the first curled display part 402, the number of at least one first auxiliary sliding protrusion 503 may be the same as the number of at least one first auxiliary rail member 203, and at least one first auxiliary sliding protrusion 503 may be slidingly connected to at least one first auxiliary rail member 203 in a one-to-one correspondence.

[0095] It should be noted that the structure of the first auxiliary rail member 203 in the second shell 200 can be the same as that of the first rail member 202. Similarly, the structure of the first auxiliary sliding protrusions 503 in the first support bar 500 can be the same as the number of the first sliding protrusions 501, which will not be repeated here.

[0096] In this way, the two first track members 202 in the second shell 200 and the at least one first auxiliary track member 203 located between the two first track members 202 can support the first support bar 500, and then support the flexible display panel 400, so that the flatness of the flexible display panel 400 is further improved. It should be noted that the bending radius of the first curved track of the two first track members 202 can be the same as the bending radius of the first curved track of at least one first auxiliary track member 203, so that after the first support bar 500 slides onto the first curved track, the first support bar 500 extends parallel to the second direction Y, so that the flatness of the first curved portion 4022 in the first curled display portion 402 is better.

[0097] Optional, please refer to Fig.13 , Fig.13: is a structural schematic diagram of a second support bar provided in an embodiment of the present application, and the second support bar 600 may include: a second support bar body 601 and two second sliding protrusions 602. The second support bar body 601 in the second support bar 600 may be fixedly connected to the back of the second curled display portion 403, the two second sliding protrusions 602 in the second support bar 600 may be respectively fixedly connected to the two ends of the second support bar body 601, and the two second sliding protrusions 602 may be slidably connected to the two second track members 302. In this way, through the sliding connection of the two second sliding protrusions 602 with the two second track members 302, respectively, the second support bar 600 may be slidably connected to the two second track members 302, and then the second curled display portion 403 may be connected to the two second track members 302. In this way, the second support bar 600 may be slidably connected to the two second track members 302.

[0098] Among them, Figure 5 and Figure 6 As shown, in the second direction Y, the length of the second support bar body 601 in the second support bar 600 may be less than or equal to the distance between the two second track members 302. Here, in the second direction Y, the sum of the lengths of the second support bar body 601 and the two second sliding protrusions 602 located at both ends of the second support bar body 601 may be equal to the distance between the two second track members 302. In this way, by sliding the two second sliding protrusions 602 relative to the second track members 302, the second support bar body 601 may slide relative to the two second track members 302, and then the second support bar 600 may slide relative to the two second track members 302.

[0099] Optional, such as Fig.10 , Fig.13 , Fig.14 and Fig.15 As shown, Fig.14 is a cross-sectional view of a second track member provided in an embodiment of the present application, Fig.15 : is a schematic diagram of the structure of a second track member provided in an embodiment of the present application. The second track member 302 may have a second slide groove S2 on the side facing the first track member 500. At least part of the second sliding protrusion 602 of the second support bar 600 may be located in the second slide groove S2 and may be slidably connected to the second slide groove S2. In this way, the second support bar 600 may slide relative to the second track member 302 by sliding the second sliding protrusion 602 in the second slide groove S2.

[0100] It should be noted that if Fig.15As shown, the second track member 302 can also be divided into a third plane track C1 and a fourth plane track C2 which are arranged opposite to each other in a direction perpendicular to the plane display portion 401, and a second curved track C3 which is located between the third plane track C1 and the fourth plane track C1 and whose two ends are connected to the third plane track C1 and the fourth plane track C1 respectively. The first track member C1 is closer to the plane display portion 401 than the second track member C2.

[0101] After the third housing 300 slides in a direction away from the first housing 100, the second sliding protrusions 602 of most of the second support bars 600 can be located in the second slide groove S2 of the third planar track C1, so that most of the second rolled display portion 403 can be supported by the third planar track C1, thereby making most of the second rolled display portion 403 in the same plane as the planar display portion 401. After the third housing 300 slides in a direction close to the first housing 100, the second sliding protrusions 602 of most of the second support bars 600 can be located in the second slide groove S2 of the fourth planar track C1, so that most of the second rolled display portion 403 can be retracted into the third housing 300.

[0102] It should be noted that when the display device is placed in a plane and the plane of the planar display part 401 is facing upward in the direction of gravity, the third planar track member C1 can be located above the fourth planar track member C2. Since the second support bar 600 is located on the side of the first track member 202 away from the second curled display part 403, the second support bar 600 can be located below the third planar track member C1 in the direction of gravity, and since the second sliding protrusion 602 is located in the second slide groove S2 of the third planar track C1, the second sliding protrusion 602 will not fall off from the second slide groove S2 of the third planar track C1. Similarly, when the display device is placed in a plane and the plane of the planar display part 401 is facing downward in the direction of gravity, the fourth planar track member C2 can be located above the third planar track member C1. Since the second sliding protrusion 602 is located in the second slide groove S2 of the fourth planar track C2, the second sliding protrusion 602 will not fall off from the second slide groove S2 of the fourth planar track C2.

[0103] Optional, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the third housing 300 may further include: at least one second auxiliary rail member 303 located between the two second rail members 302. One end of the second auxiliary rail 303 in the third housing 300 may be fixedly connected to the second installation shell 301.

[0104] like Fig.14As shown, the second support bar 600 may further include: at least one second auxiliary protrusion 603 fixedly connected to a side of the second support bar 600 away from the second rollable display portion 403. The number of the at least one second auxiliary protrusion 603 in the second support bar 600 may be the same as the number of the at least one second auxiliary track 303, and the at least one second auxiliary protrusion 603 may be slidably connected to the at least one second auxiliary track member 303 in a one-to-one correspondence.

[0105] In this way, the two second track members 302 in the third shell 300 and the at least one second auxiliary track member 303 located between the two second track members 302 can support the second support bar 600, and then support the flexible display panel 400, so that the flatness of the flexible display panel 400 is further improved. It should be noted that the bending radius of the second curved track of the two second track members 302 can be the same as the bending radius of the second curved track of at least one second auxiliary track member 303, so that after the second support bar 600 slides onto the first curved track, the second support bar 600 extends parallel to the second direction Y, thereby making the flatness of the second curved portion 4032 in the second curled display portion 403 better.

[0106] It should be noted that the structure of the second auxiliary rail member 303 in the third shell 300 can be the same as the structure of the first auxiliary rail member 203 in the first shell 200. Similarly, the structure of the second auxiliary protrusion 603 in the second support bar 600 can be the same as the structure of the first sliding protrusion 502 in the first support bar 500, which will not be repeated here.

[0107] In this application, if Figure 5 and Figure 6 As shown, when the second shell 200 includes at least one first auxiliary track member 203, at least one first auxiliary track member 203 can correspond one-to-one with at least one second auxiliary track member 303, and the corresponding first auxiliary track members 203 and second auxiliary track members 303 can be staggered in the second direction Y.

[0108] In this way, in the second shell 200 and the third shell 300, for a first track member 202 and a second track member 302 distributed on the same side of the display device, the first track member 202 can be staggered with the second track member 302 in the second direction Y, and at the same time, the first auxiliary track member 203 and the second auxiliary track member 303 are staggered in the second direction Y, so that the first track member 202 and the first auxiliary track member 203 in the second shell 200 and the second track member 302 and the second auxiliary track member 303 in the third shell 300 will not overlap in the direction perpendicular to the plane display part 401. In this way, while ensuring that the display device in the present application can be normally expanded and contracted, the thickness of the display device is also small.

[0109] It should be noted that at least one first auxiliary track member 203 can be distributed between two first track members 202 at equal intervals, so that one first track member 202, at least one first auxiliary track member 203 and another first track member 202 can be evenly arranged in the second direction Y, and then the two first track members 202 and at least one first auxiliary track member 203 can apply a uniform support force to the first support bar 500, so that the support force on the flexible display panel 400 is uniform. Similarly, at least one second auxiliary track member 303 can be distributed between two second track members 302 at equal intervals, so that one second track member 302, at least one second auxiliary track member 303 and another second track member 302 can be evenly arranged in the second direction Y, and then the two second track members 302 and at least one second auxiliary track member 303 can apply a uniform support force to the second support bar 600, so that the support force on the flexible display panel 400 is uniform. In this way, the flatness of the flexible display panel 400 is ensured to be good.

[0110] Optionally, the distance between the corresponding first auxiliary track member 203 and the second auxiliary track member 303 in the second direction Y may be less than or equal to the distance between the first track member 202 and the second track member 302 distributed on the same side of the display device in the second direction Y. In this way, the first auxiliary track member 203 and the second auxiliary track member 303 located in the middle of the display device and adjacently distributed in the second direction Y can provide a greater supporting force for the flexible display panel 400, further making the flatness of the flexible display panel 400 better.

[0111] Optionally, the length of the first support bar body 501 in the first support bar 500 may be equal to the length of the second support bar body 601 in the second support bar 600. Thus, in the second direction Y, both the first support bar body 501 and the second support bar body 601 may be used to support the display surface of the flexible display panel 400.

[0112] Optional, please refer to Fig.16, Fig.16 4 is a cross-sectional view of another display device provided in an embodiment of the present application. The flexible display panel 400 may further include: a non-display portion 404 located on a side of the first curled display portion 402 away from the planar display portion 401 .

[0113] The display device may further include: a support plate 700 and a circuit board 800. The support plate 700 may be slidably connected to the second shell 200. The support plate 700 may have a support surface P, and the support surface P may be fixedly connected to the back of the non-display portion 404. The circuit board 800 may be fixed on the support surface P. In this way, when the second shell 200 slides relative to the first shell 100 to allow the first curled display portion 402 to slide, the non-display portion 404 may also slide under the action of the sliding connection of the support plate 700 relative to the second shell 200, so that the non-display portion 404 may be effectively prevented from warping. In addition, the non-display portion 404 in the flexible display panel 400 will not collide with other structures, thereby ensuring good reliability of the display device.

[0114] Please note that, please refer to Fig.17 , Fig.17 : is a partial top view of a display device provided by an embodiment of the present application. The side of the support plate 700 away from the support surface P may have multiple rows of fourth sliding protrusions 701 arranged in an array. One row of the fourth sliding protrusions 701 may include: two first sub-sliding protrusions 7011, and at least one second sub-sliding protrusion 7012 located between the two first sub-sliding protrusions 7011. The two first sub-sliding protrusions 7011 can be slidably connected to the two first track members 202 in the second shell 200. Here, the structure of the two first sub-sliding protrusions 7011 can be the same as the structure of the first sliding protrusion 502, which will not be repeated here. At least one second sub-sliding protrusion 7012 can be slidably connected to at least one second track member 203 in the second shell 200. Here, the structure of the second sub-sliding protrusion 7012 can be the same as the structure of the first auxiliary track member 503, which will not be repeated here. In this way, the support plate 700 can be slidably connected to the second shell 200.

[0115] Optional, such as Fig.16 and Fig.17As shown, the support plate 700 in the display device may have an avoidance hole V, and the avoidance hole V may penetrate the support plate 700 in a direction perpendicular to the plane display portion 401. The circuit board 800 in the display device may include: a circuit board body 801 and components 802, the circuit board body 801 may be fixed on the support surface P, the components may be fixed on the side of the circuit board body 801 facing the support plate 7001, and at least part of the components 802 may be located in the avoidance hole V of the support plate 700. In this way, the components 802 in the circuit board 800 may be located on the side of the support plate 700 facing the plane display portion 401, so that the components 802 do not need to occupy additional space in the direction perpendicular to the plane display portion 401, thereby making the overall thickness of the display device smaller.

[0116] It should be noted that the display device may further include a chip on flex (COF) for connecting the circuit board body 801 and the non-display portion 404, and a flexible circuit board for connecting the components 802 and the non-display portion 404. The two ends of the chip on flex may be connected to the circuit board body 801 and the non-display portion 404, respectively. The two ends of the flexible circuit board may be connected to the components 802 and the non-display portion 404, respectively. And since the components 802 are located on the side of the support plate 700 facing the planar display portion 401, compared to setting the components on the side of the support plate away from the planar display portion, the components 802 are located on the side of the support plate 700 facing the planar display portion 401, so that the flexible circuit board does not need to bypass the end of the support plate 700 away from the non-display portion 404, thereby preferentially avoiding the phenomenon of the flexible circuit board being entangled.

[0117] And it needs to be explained that, Fig.17 As shown, the display device may include a plurality of circuit boards 800, and the support plate 700 may have avoidance holes V corresponding to the plurality of circuit boards 800. For example, the display device may include: three circuit boards 800, and the support plate 700 may have three avoidance holes V. For a row of sliding protrusions 701, the row of sliding protrusions 701 may include: two first sub-sliding protrusions 7011, and two second sub-sliding protrusions 7012 located between the two first sub-sliding protrusions 7011. Among the three avoidance holes V of the support plate 700, the first avoidance hole V may be located between a first sub-sliding protrusion 7011 and a second sub-sliding protrusion 7012, the second avoidance hole V may be located between a second sub-sliding protrusion 7012 and another second sub-sliding protrusion 7012, and the third avoidance hole V may be located between another second sub-sliding protrusion 7012 and another first sub-sliding protrusion 7011.

[0118] In summary, the embodiment of the present application provides a display device, including: a first shell, a second shell, a third shell and a flexible display panel. The flexible display panel in the display device can be normally unfolded and retracted, so that the display device is in an unfolded state and a retracted state. And after the second shell and the third shell slide in a direction away from the first shell at the same time so that the display device is in an unfolded state, the display surface of the planar display part can be located in the same plane as most of the areas in the first curled display part and most of the areas in the second curled display part, so as to display the picture at the same time, so that the size of the area used for displaying the picture on the flexible display panel is larger. After the second shell and the third shell slide in a direction close to the first shell at the same time so that the display device is in a retracted state, the first curled display part can slide into the second shell, and the second curled display part can slide into the third shell, so that only the planar display part of the flexible display panel can be used to display the picture, thereby making the size of the area used to display the picture in the flexible display panel smaller. In this way, the ratio between the size of the display surface when the display device is in the expanded state and the size of the display surface when the display device is in the collapsed state is large, so that the display device has a smaller volume in the collapsed state for easy carrying, and the display device also has a larger display surface for image display when it is in the expanded state.

[0119] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0120] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0121] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A display device, characterized in that: include: A first shell, a second shell, a third shell and a flexible display panel; The second shell and the third shell are respectively distributed on both sides of the first shell in the first direction, and the second shell and the third shell are both slidably connected to the first shell; The flexible display panel comprises: a plane display portion, and a first rolled display portion and a second rolled display portion located on both sides of the plane display portion in the first direction; the plane display portion is fixed on the first shell; the first rolled display portion comprises: a first plane portion arranged in parallel with the plane display portion, and a first bent portion located between the first plane portion and the plane display portion, the first bent portion being rolled up on a side of the second shell away from the first shell; the second rolled display portion comprises: a second plane portion arranged in parallel with the plane display portion, and a second bent portion located between the second plane portion and the plane display portion, the second bent portion being rolled up on a side of the third shell away from the first shell; Wherein, the bending radius of the first curved portion is smaller than the bending radius of the second curved portion; and after the display device is in a retracted state, in a direction perpendicular to the planar display portion, at least part of the first planar portion is located between the planar display portion and the second planar portion.

2. The display device according to claim 1, characterized in that The second housing comprises: a first mounting housing and two first track members, wherein the two first track members are fixedly connected to two ends of the first mounting housing in a second direction; the first bent portion is wound on a side of the first mounting housing away from the first housing; The third housing comprises: a second mounting housing and two second track members, the two second track members are arranged in the second direction; the two second track members are fixedly connected to two ends of the second mounting housing in the second direction; the second curved portion is wound on a side of the second mounting housing away from the first housing; Among them, the two first track members are used for sliding connection with the first curled display part, and the two second track members are used for sliding connection with the second curled display part; for one first track member and one second track member distributed on the same side of the display device, the first track member and the second track member are staggered in the second direction; and in the second direction, the two first track members are distributed between the two second track members; the second direction is parallel to the planar display part and intersects with the first direction.

3. The display device according to claim 2, characterized in that: The display device further comprises: a plurality of first support bars arranged in an array, and a plurality of second support bars arranged in an array; the length direction of the first support bars and the length direction of the second support bars are both parallel to the second direction; The plurality of first support bars are fixedly connected to the back surface of the first curled display portion, and two ends of the first support bars are slidably connected to the two first track members respectively; The plurality of second support bars are fixedly connected to the back surface of the second curled display portion, and two ends of the second support bars are respectively slidably connected to the two second track members.

4. The display device according to claim 3, characterized in that: The first support bar comprises: a first support bar body and two first sliding protrusions; the first support bar body is fixedly connected to the back side of the first curled display part; the two first sliding protrusions are both fixedly connected to a side of the first support bar body away from the first curled display part, and the two first sliding protrusions are respectively slidably connected to the two first track members; Wherein, in the second direction, the length of the first support bar body is greater than the distance between the two first track members; and the end of the first support bar body protrudes from the first track members distributed at corresponding positions.

5. The display device according to claim 4, characterized in that: The first track member comprises: a first sub-track and a second sub-track arranged in the second direction, and a first slide groove is provided between the first sub-track and the second sub-track; At least a portion of the first sliding protrusion is located in the first sliding groove and is slidably connected to the first sliding groove; the first support bar body is in sliding contact with the outer side surfaces of the first sub-rail and the second sub-rail.

6. The display device according to claim 5, characterized in that: The first slide groove comprises: a first slide groove body, and a first limiting groove and a second limiting groove connected with the first slide groove body in the second direction; the first slide groove body is distributed in the gap between the first sub-rail and the second sub-rail, the first limiting groove is distributed on a side of the first sub-rail member facing the second sub-rail member, and the second limiting groove is distributed on a side of the second sub-rail member facing the first sub-rail member; The first sliding protrusion comprises: a first slider and a first rod; the first slider is fixedly connected to a side of the first support bar body away from the first curled display portion; the first rod is fixedly connected to a side of the first slider away from the first support bar body, and in the second direction, both ends of the first rod protrude from the first slider; Among them, at least part of the first sliding block is located in the first sliding groove body, one end of the first rod body protruding relative to the first sliding block is located in the first limiting groove, and the other end of the first rod body protruding relative to the first sliding block is located in the second limiting groove.

7. The display device according to claim 4, characterized in that: The second housing further comprises: at least one first auxiliary track member located between the two first track members, one end of the first auxiliary track member being fixedly connected to the first mounting shell; The first support bar further includes: at least one first auxiliary sliding protrusion fixedly connected to a side of the first support bar body away from the first curled display portion, and the at least one first auxiliary sliding protrusion is slidingly connected to the at least one first auxiliary track member in a one-to-one correspondence.

8. The display device according to any one of claims 3 to 7, characterized in that: The second support bar comprises: a second support bar body and two second sliding protrusions; the second support bar body is fixedly connected to the back of the second curled display portion; the two second sliding protrusions are respectively fixedly connected to the two ends of the second support bar body, and the two second sliding protrusions are respectively slidably connected to the two second track members; Wherein, in the second direction, the length of the second support bar body is less than or equal to the distance between the two second track members.

9. The display device according to claim 8, characterized in that: The second rail member has a second slide groove on one side facing the first rail member; at least a portion of the second sliding protrusion is located in the second slide groove and is slidably connected to the second slide groove.

10. The display device according to claim 8, characterized in that The third housing further comprises: at least one second auxiliary track member located between the two second track members, one end of the second auxiliary track member being fixedly connected to the second mounting shell; The second support bar also includes: at least one second auxiliary sliding protrusion fixedly connected to the side of the second support bar body away from the second curled display part, and the at least one second auxiliary sliding protrusion is slidingly connected to the at least one second auxiliary track member in a one-to-one correspondence.

11. The display device according to claim 10, characterized in that: In the case where the second shell includes at least one first auxiliary track component, the at least one first auxiliary track component corresponds to the at least one second auxiliary track component one by one, and the corresponding first auxiliary track components and second auxiliary track components are staggered in the second direction.

12. The display device according to claim 11, characterized in that: The distance between the corresponding first auxiliary rail members and the second auxiliary rail members in the second direction is less than or equal to the distance between the first rail member and the second rail member distributed on the same side of the display device in the second direction.

13. The display device according to any one of claims 3-7, 9-11, characterized in that: The length of the first support bar body in the first support bar is equal to the length of the second support bar body in the second support bar.

14. The display device according to any one of claims 1 to 7 and 9 to 12, characterized in that: The flexible display panel further comprises: a non-display portion located on a side of the first curled display portion away from the planar display portion; The display device further includes: a support plate and a circuit board; the support plate is slidably connected to the second shell, and the support plate has a support surface, and the support surface is fixedly connected to the back surface of the non-display part; the circuit board is fixed on the support surface.

15. The display device according to claim 14, characterized in that: The support plate has an avoidance hole, and the avoidance hole penetrates the support plate in a direction perpendicular to the planar display part; The circuit board comprises: a circuit board body and components; the circuit board body is fixed on the support surface, the components are fixed on a side of the circuit board body facing the support plate, and at least part of the components are located in the avoidance hole.

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