Display device

Abstract

The present application belongs to the technical field of display. Disclosed is a display device. The display device comprises: a first housing, a second housing, a third housing and a flexible display panel. After the second housing and the third housing slide in a direction away from the first housing, a display surface of a flat display portion is located on the same plane as most of the area in a first rollable display portion and most of the area in a second rollable display portion, so that the size of the area of the flexible display panel for displaying an image is relatively large. After the second housing and the third housing slide in a direction towards the first housing, the first rollable display portion can slide into the second housing, and the second rollable display portion can slide into the third housing, so that the size of the area of the flexible display panel for displaying an image is relatively small. In this way, when in a retracted state, the display device has a relatively small size so as to facilitate carrying, and when in an extended state, the display device also has a relatively large display surface for image display.

Description

Display device

[0001] This application claims priority to Chinese Patent Application No. 202510072096.0, filed on January 16, 2025, entitled “Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and in particular to a display device. Background Technology

[0003] Currently, display devices can use flexible display panels as displays, which have advantages over traditional display panels, such as being deformable, bendable, and having better flexibility.

[0004] The flexible display panel in the display device can be unfolded or rolled up by the housing, allowing the display device to have both unfolded and retracted states, thus enabling the adjustment of the display surface size. The larger the ratio of the display surface size in the unfolded state to the display surface size in the retracted state, the smaller the volume of the display device in the retracted state, while the larger the display surface size in the unfolded state.

[0005] However, the ratio of the display surface size when the current display device is in the unfolded state to the display surface size when the display device is in the retracted state is relatively small, which cannot meet the requirement that the display device has a small volume while having a large display area. Summary of the Invention

[0006] This application provides a display device. It addresses the problem in existing technologies where the ratio of the size of the display surface in the unfolded state to the size of the display surface in the retracted state is relatively small. The technical solution is as follows:

[0007] A display device is provided, comprising: a first housing, a second housing, a third housing, and a flexible display panel;

[0008] The second housing and the third housing are respectively distributed on both sides of the first housing in a first direction, and both the second housing and the third housing are slidably connected to the first housing;

[0009] The flexible display panel includes: a flat display portion, and a first rolled display portion and a second rolled display portion located on both sides of the flat display portion in the first direction; the flat display portion is fixed to the second housing; the first rolled display portion includes: a first flat portion arranged parallel to the flat display portion, and a first curved portion located between the first flat portion and the flat display portion, the first curved portion being wound around the side of the second housing opposite to the first housing; the second rolled display portion includes: a second flat portion arranged parallel to the flat display portion, and a second curved portion located between the second flat portion and the flat display portion, the second curved portion being wound around the side of the third housing opposite to the first housing;

[0010] 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 flat display portion, at least a portion of the first flat portion is located between the flat display portion and the second flat portion.

[0011] Optionally, the second housing includes: a first mounting shell and two first track members, the two first track members being fixedly connected to both ends of the first mounting shell in a second direction; the first curved portion is wound around the side of the first mounting shell opposite to the first housing;

[0012] The third housing includes: a second mounting housing and two second track members, the two second track members being arranged in the second direction; the two second track members being fixedly connected to both ends of the second mounting housing in the second direction; and the second curved portion being wound around the side of the second mounting housing opposite to the first housing.

[0013] Wherein, the two first track members are used to slide and connect with the first curled display portion, and the two second track members are used to slide and connect with the second curled display portion; for a first track member and a second track member distributed on the same side of the display device, the first track member and the second track member are offset 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 portion and intersects with the first direction.

[0014] Optionally, the display device further includes: 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;

[0015] The plurality of first support bars are fixedly connected to the back of the first curled display portion, and the two ends of the first support bars are slidably connected to the two first track components respectively;

[0016] The plurality of second support bars are fixedly connected to the back of the second curled display portion, and the two ends of the second support bars are slidably connected to the two second track components respectively.

[0017] Optionally, the first support bar includes: a first support bar body and two first sliding protrusions; the first support bar body is fixedly connected to the back of the first curled display portion; the two first sliding protrusions are fixedly connected to the side of the first support bar body away from the first curled display portion, and the two first sliding protrusions are respectively slidably connected to the two first track components.

[0018] 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 the corresponding positions.

[0019] Optionally, the first track component includes: a first sub-track and a second sub-track arranged in the second direction, with a first groove between the first sub-track and the second sub-track;

[0020] At least a portion of the first sliding protrusion is located within the first sliding groove and is slidably connected to the first sliding groove; the body of the first support bar is in slidable contact with the outer surfaces of the first sub-track and the second sub-track.

[0021] Optionally, the first slide rail includes: a first slide rail body, and a first limiting groove and a second limiting groove communicating with the first slide rail body in the second direction; the first slide rail body is distributed in the gap between the first sub-track and the second sub-track, the first limiting groove is distributed on the side of the first sub-track member facing the second sub-track member, and the second limiting groove is distributed on the side of the second sub-track member facing the first sub-track member.

[0022] The first sliding protrusion includes: a first slider and a first rod; the first slider is fixedly connected to the side of the first support bar body opposite to the first curled display portion; the first rod is fixedly connected to the side of the first slider opposite to the first support bar body, and in the second direction, both ends of the first rod protrude from the first slider;

[0023] Wherein, at least a portion of the first slider is located within the first groove body, one end of the first rod protruding relative to the first slider is located within the first limiting groove, and the other end of the first rod protruding relative to the first slider is located within the second limiting groove.

[0024] Optionally, the second housing further includes 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 housing;

[0025] The first support bar further includes at least one first auxiliary sliding protrusion fixedly connected to the side of the first support bar body opposite to the first curled display portion, wherein the at least one first auxiliary sliding protrusion is slidably connected to the at least one first auxiliary track component in a one-to-one correspondence.

[0026] Optionally, the second support strip includes: a second support strip body and two second sliding protrusions; the second support strip 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 strip body, and the two second sliding protrusions are respectively slidably connected to the two second track components;

[0027] 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.

[0028] Optionally, the second track member has a second groove on the side facing the first track member; at least a portion of the second sliding protrusion is located within the second groove and is slidably connected to the second groove.

[0029] Optionally, the third housing further includes 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 housing;

[0030] The second support bar further includes at least one second auxiliary sliding protrusion fixedly connected to the side of the second support bar body opposite to the second curled display portion, wherein the at least one second auxiliary sliding protrusion is slidably connected to the at least one second auxiliary track member in a one-to-one correspondence.

[0031] Optionally, when the second housing includes at least one first auxiliary track member, the at least one first auxiliary track member corresponds one-to-one with the at least one second auxiliary track member, and the corresponding first auxiliary track member and second auxiliary track member are offset in the second direction.

[0032] Optionally, the distance between the corresponding first auxiliary track and the second auxiliary track in the second direction is less than or equal to the distance between the first track and the second track distributed on the same side of the display device in the second direction.

[0033] 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.

[0034] Optionally, the flexible display panel further includes a non-display portion located on the side of the first rollable display portion opposite to the planar display portion;

[0035] The display device further includes: a support plate and a circuit board; the support plate is slidably connected to the second housing, and the support plate has a support surface, which is fixedly connected to the back of the non-display portion; the circuit board is fixed to the support surface.

[0036] Optionally, the support plate has a clearance hole that penetrates the support plate in a direction perpendicular to the planar display portion;

[0037] The circuit board includes: a circuit board body and components; the circuit board body is fixed to the support surface, the components are fixed to the side of the circuit board body facing the support plate, and at least a portion of the components are located within the clearance hole.

[0038] The beneficial effects of the technical solutions provided in this application include at least the following:

[0039] The flexible display panel in the display device can be normally unfolded and retracted, allowing the display device to be in both unfolded and retracted states. When the second and third housings simultaneously slide away from the first housing to unfold the display device, the display surface of the flat display portion can lie on the same plane as most areas of the first and second rolled-up display portions, allowing for simultaneous image display. This results in a larger area of ​​the flexible display panel used for image display. When the second and third housings simultaneously slide towards the first housing to retract the display device, the first rolled-up display portion can slide into the second housing, and the second rolled-up display portion can slide into the third housing. This means only the flat display portion of the flexible display panel can be used for image display, thus reducing the size of the area used for image display. Therefore, the ratio between the size of the display surface in the unfolded state and the size of the display surface in the retracted state is large, allowing the display device to have a small volume for portability in the retracted state while maintaining a large display surface for image display in the unfolded state. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is a top view of a display device in a retracted state and an expanded state according to an embodiment of this application;

[0042] Figure 2 is a cross-sectional view of a display device in a retracted state and an expanded state according to an embodiment of this application;

[0043] Figure 3 is a top view of a partial structure of a display device in an unfolded state according to an embodiment of this application;

[0044] Figure 4 is a top view of a partial structure of a display device in a retracted state according to an embodiment of this application;

[0045] Figure 5 is a schematic diagram of a portion of the structure of a display device in an unfolded state according to an embodiment of this application.

[0046] Figure 6 is a schematic diagram of a portion of the structure of a display device in a retracted state according to an embodiment of this application.

[0047] Figure 7 is a cross-sectional view of a display device in a retracted state according to an embodiment of this application;

[0048] Figure 8 is a cross-sectional view of a first support strip provided in an embodiment of this application;

[0049] Figure 9 is a structural schematic diagram of a first track component provided in an embodiment of this application;

[0050] Figure 10 is a cross-sectional view of a first track component provided in an embodiment of this application;

[0051] Figure 11 is a cross-sectional view of another first track component provided in an embodiment of this application;

[0052] Figure 12 is a structural schematic diagram of a first track component provided in an embodiment of this application;

[0053] Figure 13 is a structural schematic diagram of a second support strip provided in an embodiment of this application;

[0054] Figure 14 is a cross-sectional view of a second track component provided in an embodiment of this application;

[0055] Figure 15 is a structural schematic diagram of a second track component provided in an embodiment of this application;

[0056] Figure 16 is a cross-sectional view of another display device provided in an embodiment of this application;

[0057] Figure 17 is a partial top view of a display device provided in an embodiment of this application. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0059] This application provides a display device, which can be any product or component with display and scrolling functions, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Please refer to Figure 1, which is a top view of a display device provided in this application in a retracted and extended state. The display device in this application may include a first housing 100, a second housing 200, a third housing 300, and a flexible display panel 400.

[0060] The second housing 200 and the third housing 300 in the display device can be distributed on both sides of the first housing 100 in the first direction X, and both the second housing 200 and the third housing 300 can be slidably connected to the first housing 100.

[0061] Please refer to Figures 1 and 2. Figure 2 is a cross-sectional view of a display device provided in an embodiment of this application in a retracted state and an unfolded state. The flexible display panel 400 in the display device may include: a flat display portion 401, and a first rolled display portion 402 and a second rolled display portion 403 located on both sides of the flat display portion 401 in a first direction X. The flat display portion 401 in the flexible display panel 400 may be fixed to the first housing 100.

[0062] The first rollable display portion 402 in the flexible display panel 400 may include: a first flat portion 4021 arranged parallel to the flat display portion 401, and a first curved portion 4022 located between the first flat portion 4021 and the flat display portion 401. The first curved portion 4022 may be rolled around the side of the second housing 200 away from the first housing 100.

[0063] The second rollable display portion 403 in the flexible display panel 400 may include: a second flat portion 4031 arranged parallel to the flat display portion 401, and a second curved portion 4032 located between the second flat portion 4031 and the flat display portion 401, the second curved portion 4032 being able to be rolled around the side of the third housing 300 away from the first housing 100.

[0064] Here, when the second housing 200 in the display device slides away from the first housing 100, the second housing 200 can cause the first curled display portion 402 in the flexible display panel 400 to slide out of the second housing 200, and cause the display surface of the flat display portion 401 in the flexible display panel 400 and most of the area of ​​the first curled display portion 402 to be located in the same plane (thus increasing the size of the area of ​​the flexible display panel used to display the image), and use it to display the image. When the second housing 200 in the display device slides closer to the first housing 100, the second housing 200 can cause the first curled display portion 402 in the flexible display panel 400 to slide into the second housing 200, thus reducing the size of the area of ​​the flexible display panel 400 used to display the image.

[0065] Similarly, when the third housing 300 in the display device slides away from the first housing 100, the third housing 300 can cause the second curled display portion 403 in the flexible display panel 400 to slide out of the third housing 300, and cause the display surface of the flat display portion 401 and most of the area of ​​the second curled display portion 402 in the flexible display panel 400 to be in the same plane (thus increasing the size of the area of ​​the flexible display panel used to display the image), and use it to display the image. When the third housing 300 in the display device slides closer to the first housing 100, the third housing 300 can cause the second curled display portion 403 in the flexible display panel 400 to slide into the third housing 300, thus reducing the size of the flexible display panel 400 used to display the image.

[0066] In this application, as shown in FIG2, the bending radius R1 of the first curved portion 4022 in the first curved display portion 402 can be smaller than the bending radius R2 of the second curved portion 4022 in the second curved display portion 402. Furthermore, when the display device is in a retracted state, at least a portion of the first flat portion 4021 in the first curved display portion 402 can be located between the flat display portion 401 and the second flat portion 4022 in the second curved display portion 403 in the direction perpendicular to the flat display portion 401. That is, when the display device is in a retracted state, the first flat portion 4021 in the first curved display portion 402 and the second flat portion 4031 in the second curved display portion 403 will not interfere with each other.

[0067] Thus, when the second housing 200 and the third housing 300 in the display device slide towards the first housing 100 at the same time, the first flat portion 4021 in the first curled display portion 402 sliding into the second housing 200 and the second flat portion 4031 in the second curled display portion 403 sliding into the third housing 300 will not interfere with each other. This allows the first flat portion 4021 to slide normally between the second flat portion 4031 and the flat display portion 401 in a direction perpendicular to the flat display portion 401. Until the second housing 200 and the third housing 300 can no longer slide towards the first housing 100, at least a portion of the first flat portion 4021 is located between the second flat portion 4031 and the flat display portion 401, so that the display device is in a retracted state.

[0068] Similarly, when the second housing 200 and the third housing 300 in the display device slide simultaneously away from the first housing 100, the first curled display portion 402 sliding out from the second housing 200 will not interfere with the second curled display portion 403 sliding out from the third housing 300, so that the display device can be unfolded normally until the second housing 200 and the third housing 300 can no longer slide away from the first housing 100, at which point the display device can be in the unfolded state.

[0069] Therefore, the flexible display panel 400 in the display device can be normally unfolded and retracted, allowing the display device to be in both unfolded and retracted states. Furthermore, after the second housing 200 and the third housing 300 simultaneously slide away from the first housing 100 to unfold the display device, the display surface of the flat display portion 401 can be located on the same plane as most areas of the first rolled display portion 402 and most areas of the second rolled display portion 403, allowing for simultaneous image display. This results in a larger area of ​​the flexible display panel 400 used for image display. Conversely, after the second housing 200 and the third housing 300 simultaneously slide towards the first housing 100 to retract the display device, the first rolled display portion 401 can slide into the second housing 200, and the second rolled display portion 402 can slide into the third housing 300. This means only the flat display portion 401 in the flexible display panel 400 can be used for image display, thus reducing the size of the area in the flexible display panel 400 used for image display. Thus, the ratio between the size of the display surface when the display device is in the unfolded state and the size of the display surface when the display device is in the retracted state is relatively large. This allows the display device to have a small volume in the retracted state for easy carrying, while also having a large display surface in the unfolded state for displaying images.

[0070] It should be noted that by setting the bending radius R1 of the first curved portion 4022 in the first curved display portion 402 in the display device to be smaller than the bending radius R2 of the second curved portion 4022 in the second curved display portion 402, and by allowing at least a portion of the first flat portion 4021 in the first curved display portion 402 to be located between the flat display portion 401 and the second flat portion 4022 in the second curved display portion 403 in the direction perpendicular to the flat display portion 401 after the display device is in the retracted state, the ratio between the size of the display surface when the display device is in the unfolded state and the size of the display surface when the display device is in the retracted state can be 3. This allows the display device to have a small volume in the retracted state for easy carrying, while also having a large display surface in the unfolded state for image display.

[0071] In summary, this application provides a display device comprising: a first housing, a second housing, a third housing, and a flexible display panel. The flexible display panel in the display device can be normally unfolded and retracted, allowing the display device to be in an unfolded state and a retracted state. Furthermore, when the second housing and the third housing simultaneously slide away from the first housing to put the display device in the unfolded state, the display surface of the flat display portion can be located on the same plane as most areas of the first and second rolled-up display portions, allowing for simultaneous image display, resulting in a larger area of ​​the flexible display panel used for image display. When the second housing and the third housing simultaneously slide towards the first housing to put the display device in the retracted state, the first rolled-up display portion can slide into the second housing, and the second rolled-up display portion can slide into the third housing, allowing only the flat display portion of the flexible display panel to be used for image display, thereby reducing the size of the area of ​​the flexible display panel used for image display. Thus, the ratio between the size of the display surface when the display device is in the unfolded state and the size of the display surface when the display device is in the retracted state is relatively large. This allows the display device to have a small volume in the retracted state for easy carrying, while also having a large display surface in the unfolded state for displaying images.

[0072] Optionally, please refer to Figure 3, which is a top view of a partial structure of a display device in an unfolded state according to an embodiment of this application. The second housing 200 in the display device may include a first mounting housing 201 and two first track members 202. The first track members 202 in the second housing 200 can be fixedly connected to both ends of the first mounting housing 201 in the second direction Y, that is, both ends of the second housing 200 distributed in the second direction Y can have first track members 202. The first curved portion 4022 in the first rollable display portion 402 can be rolled around the side of the first mounting housing 201 away from the first housing 100. The two first track members 202 in the second housing 200 can be slidably connected to the first rollable display portion 402.

[0073] Thus, when the second housing 200 slides away from the first housing 100, the first curved portion 4022 wrapped around the side of the first mounting housing 201 away from the first housing 100 also slides away from the first housing 100. This allows the first curled display portion 402 to slide relative to the two first track members 202, allowing it to slide out of the second housing 200, causing the portion of the first curled display portion 402 that is on the same plane as the flat display portion 401 to gradually increase in size. When the second housing 200 slides closer to the first housing 100, the first curved portion 4022 wrapped around the side of the first mounting housing 201 away from the first housing 100 also slides closer to the first housing 100. This allows the first curled display portion 402 to slide relative to the two first track members 202, allowing it to slide into the second housing 200, causing the portion of the first curled display portion 402 that is on the same plane as the flat display portion 401 to gradually decrease in size.

[0074] 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 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 rollable display portion 403 may be wound around the side of the second mounting housing 301 facing away from the first housing 100. The two second track members 302 in the third housing 300 are used for slidable connection with the second rollable display portion 403.

[0075] Thus, when the third housing 300 slides away from the first housing 100, the second curved portion 4032, which is wound around the second mounting housing 301 on the side opposite to the first housing 100, also slides away from the first housing 100. This allows the second curled display portion 403 to slide relative to the two second track members 302, allowing it to slide out of the third housing 300, causing the portion of the second curled display portion 403 that is on the same plane as the flat display portion 401 to gradually increase in size. When the third housing 300 slides closer to the first housing 100, the second curved portion 4032, which is wound around the second mounting housing 301 on the side opposite to the first housing 100, also slides closer to the first housing 100. This allows the second curled display portion 403 to slide relative to the two second track members 302, allowing it to slide into the third housing 300, causing the portion of the first curled display portion 403 that is on the same plane as the flat display portion 401 to gradually decrease in size.

[0076] Optionally, as shown in Figures 3 and 4, Figure 4 is a top view of a partial structure of a display device in a retracted state according to an embodiment of this application. 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 in the second direction Y are the two ends of the display device distributed in the second direction Y. In this way, each end of the display device distributed in the second direction Y can have a first track member 202 and a second track member 302.

[0077] 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 offset from the second track member 302 in the second direction Y. That is, in the second direction Y, there is a certain distance between the first track member 202 and the second track member 302 distributed on the same side of the display device. Furthermore, in the second direction Y, the two first track members 201 can be distributed between the two second track members 302. In this way, the first track member 202 and the second track member 302 distributed on the same side of the display device will not overlap in the direction perpendicular to the planar display portion 401. Thus, while ensuring that the display device in this application can be normally unfolded and retracted, the thickness of the display device is also relatively small.

[0078] It should be noted that the second direction Y can be parallel to the planar display portion 401 and can intersect with the first direction X. For example, the second direction Y can intersect 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 can be perpendicular to the direction in which the second housing 200 and the third housing 300 slide relative to the first housing 100.

[0079] Optionally, as shown in Figures 5, 6, and 7, Figure 5 is a schematic diagram of a portion of the structure of a display device in an unfolded state according to an embodiment of this application; Figure 6 is a schematic diagram of a portion of the structure of a display device in a retracted state according to an embodiment of this application; and Figure 7 is a cross-sectional view of a display device in a retracted state according to an embodiment of this application. 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 bars 500 and the length direction of the second support bars 600 may both be parallel to the second direction Y.

[0080] Multiple first support bars 500 in the display device can be fixedly connected to the back of the first rollable display portion 402, and the two ends of the first support bars 500 can be slidably connected to two first track members 202 in the second housing 200, respectively. In this way, when the second housing 200 slides relative to the first housing 100, the first rollable display portion 402 can slide out of or into the second housing 200 by sliding the two ends of the first support bars 500 relative to the first track members 202, respectively.

[0081] Multiple second support bars 600 in the display device can be fixedly connected to the back of the second curlable display portion 403, and the two ends of the second support bars 600 are respectively slidably connected to two second track members 302. In this way, when the third housing 300 slides relative to the first housing 100, the second curlable display portion 403 can slide out of the third housing 300 or slide into the third housing 300 by sliding the two ends of the second support bars 600 relative to the second track members 302.

[0082] Therefore, the multiple first support bars 500 and multiple second support bars 600 can not only effectively support the flexible display panel 400, but also restrict the degree of freedom of the flexible display panel 400 in the direction perpendicular to the planar display portion 401 through the cooperation of the multiple first support bars 500 with the two first track members 202 in the second housing 200, and the cooperation of the multiple second support bars 600 with the two second track members 302 in the third housing 300. This effectively reduces the probability of unevenness in the flexible display panel 400, resulting in better overall flatness of the flexible display panel 400 and thus better display effect of the display device.

[0083] It should be noted that the flexible display panel 400 typically has a display surface and a non-display surface that are arranged opposite to each other. For ease of explanation later, the front of the flexible display panel 400 is the side where the display surface is located, and the back of the flexible display panel 400 is the side where the non-display surface is located.

[0084] Optionally, as shown in Figures 7 and 8, Figure 8 is a cross-sectional view of a first support strip provided in an embodiment of this application. The first support strip 500 in the display device may include: a first support strip body 501 and two first sliding protrusions 502. The first support strip body 501 of the first support strip 500 can be fixedly connected to the back side of the first curled display portion 402. The two first sliding protrusions 502 of the first support strip 500 can both be fixedly connected to the side of the first support strip body 501 away from the first curled display portion 402, and the two first sliding protrusions 502 of the first support strip 500 can be slidably connected to the two first track members 202 in the second housing 200, respectively. In this way, through the slidable connection of the two first sliding protrusions 502 to the two first track members 202, the first support strip 500 can be slidably connected to the two first track members 202, and thus the first curled display portion 402 can be slidably connected to the two first track members 202.

[0085] As shown in Figures 5 and 6, 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 body 501 can protrude from the first track members 202 distributed at corresponding positions. Thus, in the second direction Y, the portion of the first support body 501 protruding from the first track members 202 can also be used to support the first rollable display portion 402, resulting in a larger display surface size of the flexible display panel 400 in the second direction Y, and consequently, a narrower bezel size of the display device in the second direction Y, leading to a larger screen-to-body ratio.

[0086] Optionally, please refer to Figures 9, 10, and 11. Figure 9 is a structural schematic diagram of a first track component provided in an embodiment of this application. Figure 10 is a cross-sectional view of a first track component provided in an embodiment of this application. Figure 11 is a cross-sectional view of another first track component provided in an embodiment of this application. The first track component 202 may include: a first sub-track 2021 and a second sub-track 2022 arranged in the second direction Y, with a first groove S1 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 within the first groove S1 and may be slidably connected to the first groove S1. Furthermore, the body 501 of the first support bar may slidably contact the outer surfaces of the first sub-track 2021 and the second sub-track 2022. Thus, by sliding the first sliding protrusion 502 within the first groove S1 of the first track component 202, the sliding of the first support bar 500 relative to the first track component 202 can be achieved.

[0087] Optionally, as shown in Figures 9, 10, and 11, the first slide rail S1 may include: a first slide rail body S11, and a first limiting groove S12 and a second limiting groove S13 communicating with the first slide rail body S11 in the second direction Y. The first slide rail body S11 may be distributed in the gap between the first sub-track 2021 and the second sub-track S12, the first limiting groove S12 may be distributed on the side of the first sub-track 2021 facing the second sub-track 2022, and the second limiting groove S13 may be distributed on the side of the second sub-track 2022 facing the first sub-track 2021.

[0088] 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 the side of the first support bar body 502 opposite to the first curled display portion 402, and the first rod 5022 may be fixedly connected to the side of the first slider 5021 opposite to the side of the first support bar body 501. Furthermore, in the second direction Y, both sides of the first rod 5022 may protrude from the first slider 5021.

[0089] At least a portion of the first slider 5021 can be located within the first slide groove body S11. One end of the first rod 5022 protruding relative to the first slider 5021 can be located within the first limiting groove S12, and the other end of the first rod 5022 protruding relative to the first slider 5021 can be located within the second limiting groove S13. Thus, through the sliding of the first slider 5021 within the first slide groove body S11, and the sliding of the two protruding ends of the first rod 5022 relative to the first slider 5021 within the first limiting groove S12 and the second limiting groove S13 respectively, the first sliding protrusion can slide within the first slide groove S1, thereby allowing the first support bar 500 to slide relative to the first track member 202.

[0090] Furthermore, since the two protruding ends of the first rod 5022 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 the first sliding groove S1 during the sliding process of the first sliding protrusion 502 in the first sliding groove S1, ensuring the normal sliding of the first sliding protrusion 502 in the first sliding groove S1, so that the first curled display part 402 can slide out of the second housing 200 normally, or slide into the second housing 200, thereby enabling the display device to unfold and retract normally.

[0091] It should be noted that, referring to Figure 12, which is a structural schematic diagram of a first track component provided in an embodiment of this application, the first track component 202 can be divided into a first planar track B1 and a second planar track B2 disposed opposite to each other in a direction perpendicular to the planar display portion 401, and a first curved track B3 located between the first planar track B1 and the second planar track B2, with both ends connected to the first planar track B1 and the second planar track B2 respectively. The first track component B1 is closer to the planar display portion 401 than the second track component B2.

[0092] After the second housing 200 slides away from the first housing 100, the first sliding protrusions 502 of most of the first support bars 500 can be located within the first grooves S1 of the first planar track B1, so that most of the first curlable display portion 402 can be supported by the first planar track B1, thereby allowing most of the first curlable display portion 402 to be in the same plane as the flat display portion 401. After the second housing 200 slides closer to the first housing 100, the first sliding protrusions 502 of most of the first support bars 500 can be located within the first grooves S1 of the second planar track B2, so that most of the first curlable display portion 402 can retract into the second housing 200.

[0093] It should be noted that when the display device is placed flat and the plane of the flat display portion 401 faces 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 opposite to the first curved display portion 402, the first support bar 500 can be located below the first flat track member B1 in the direction of gravity. Furthermore, since the first limiting groove S12 and the second limiting groove S13 of the first flat track member B1 can restrict both ends of the first rod 5022 of the first sliding protrusion 502 in the first support bar 500, the first sliding protrusion 502 will not fall out of 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 portion 401 faces 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 restrict both ends of the first rod 5022 of the first sliding protrusion 502 in the first support bar 500, the first sliding protrusion 502 will not fall out of the first sliding groove S1 of the second planar track component B2.

[0094] Optionally, as shown in Figures 3, 4, 5 and 6, the second housing 200 may further include at least one first auxiliary track member 203 located between the two first track members 202, one end of which may be fixedly connected to the first mounting housing 201.

[0095] As shown in Figure 8, the first support bar 500 may further include at least one first auxiliary sliding protrusion 503 fixedly connected to the side of the first support bar body 501 opposite to the first curled display portion 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 track member 203, and at least one first auxiliary sliding protrusion 503 may be slidably connected to at least one first auxiliary track member 203 in a one-to-one correspondence.

[0096] It should be noted that the structure of the first auxiliary track member 203 in the second housing 200 can be the same as the structure of the first track member 202. Similarly, the structure of the first auxiliary sliding protrusion 503 in the first support bar 500 can be the same as the number of first sliding protrusions 501. This will not be elaborated further here.

[0097] In this way, the two first track members 202 in the second housing 200, and at least one first auxiliary track member 203 located between the two first track members 202, can support the first support bar 500, thereby supporting the flexible display panel 400, which further improves the flatness of the flexible display panel 400. It should also 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. Thus, after the first support bar 500 slides onto the first curved track, the first support bar 500 extends parallel to the second direction Y, thereby improving the flatness of the first curved portion 4022 in the first rolled display portion 402.

[0098] Optionally, please refer to Figure 13, which is a structural schematic diagram of a second support strip provided in an embodiment of this application. The second support strip 600 may include: a second support strip body 601 and two second sliding protrusions 602. The second support strip body 601 of the second support strip 600 can be fixedly connected to the back side of the second curled display portion 403. The two second sliding protrusions 602 of the second support strip 600 can be fixedly connected to both ends of the second support strip body 601, and the two second sliding protrusions 602 can be slidably connected to the two second track members 302. Thus, through the slidable connection of the two second sliding protrusions 602 to the two second track members 302, the second support strip 600 can be slidably connected to the two second track members 302, and consequently, the second curled display portion 403 can be slidably connected to the two second track members 302.

[0099] As shown in Figures 5 and 6, in the second direction Y, the length of the second support bar body 601 in the second support bar 600 can 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 can be equal to the distance between the two second track members 302. Thus, through the sliding of the two second sliding protrusions 602 relative to the second track members 302, the second support bar body 601 can slide relative to the two second track members 302, and consequently, the second support bar 600 can slide relative to the two second track members 302.

[0100] Optionally, as shown in Figures 10, 13, 14, and 15, Figure 14 is a cross-sectional view of a second track member provided in an embodiment of this application, and Figure 15 is a structural schematic diagram of a second track member provided in an embodiment of this application. The side of the second track member 302 facing the first track member 500 may have a second groove S2. At least a portion of the second sliding protrusion 602 of the second support bar 600 may be located within the second groove S2 and may be slidably connected to the second groove S2. Thus, by sliding the second sliding protrusion 602 within the second groove S2, the second support bar 600 can slide relative to the second track member 302.

[0101] It should be noted that, as shown in Figure 15, the second track component 302 can also be divided into a third planar track C1 and a fourth planar track C1 arranged opposite each other in a direction perpendicular to the planar display portion 401, and a second curved track C3 located between the third planar track C1 and the fourth planar track C1, with both ends connected to the third planar track C1 and the fourth planar track C1 respectively. The first track component C1 is closer to the planar display portion 401 than the second track component C2.

[0102] After the third housing 300 slides away from the first housing 100, the second sliding protrusions 602 of most of the second support bars 600 can be located within the second grooves S2 of the third planar track C1, so that most of the second curled display portion 403 can be supported by the third planar track C1, thereby allowing most of the second curled display portion 403 to be in the same plane as the flat display portion 401. After the third housing 300 slides closer to the first housing 100, the second sliding protrusions 602 of most of the second support bars 600 can be located within the second grooves S2 of the fourth planar track C1, so that most of the second curled display portion 403 can retract into the third housing 300.

[0103] It should be noted that when the display device is placed flat and the plane of the flat display portion 401 faces upward in the direction of gravity, the third flat track member C1 can be located above the fourth flat track member C2. Since the second support bar 600 is located on the side of the first track member 202 opposite to the second curved display portion 403, the second support bar 600 can be located below the third flat track member C1 in the direction of gravity. Furthermore, since the second sliding protrusion 602 is located within the second groove S2 of the third flat track C1, the second sliding protrusion 602 will not detach from the second groove S2 of the third flat track C1. Similarly, when the display device is placed flat and the plane of the flat display portion 401 faces downward in the direction of gravity, the fourth flat track member C2 can be located above the third flat track member C1. Since the second sliding protrusion 602 is located within the second groove S2 of the fourth flat track C2, the second sliding protrusion 602 will not detach from the second groove S2 of the fourth flat track C2.

[0104] Optionally, as shown in Figures 3, 4, 5, and 6, the third housing 300 may further include at least one second auxiliary track member 303 located between the two second track members 302. One end of the second auxiliary track 303 in the third housing 300 may be fixedly connected to the second mounting housing 301.

[0105] As shown in Figure 14, the second support bar 600 may further include at least one second auxiliary protrusion 603 fixedly connected to the side of the second support bar 600 opposite to the second curlable display portion 403. The number of at least one second auxiliary protrusion 603 in the second support bar 600 may be the same as the number of at least one second auxiliary track 303, and at least one second auxiliary protrusion 603 may be slidably connected to at least one second auxiliary track 303 in a one-to-one correspondence.

[0106] In this way, the two second track members 302 in the third housing 300, and at least one second auxiliary track member 303 located between the two second track members 302, can support the second support bar 600, thereby supporting the flexible display panel 400, which further improves the flatness of the flexible display panel 400. It should also 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. Thus, 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 improving the flatness of the second curved portion 4032 in the second rolled display portion 403.

[0107] It should be noted that the structure of the second auxiliary track member 303 in the third housing 300 can be the same as the structure of the first auxiliary track member 203 in the first housing 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. This will not be elaborated further here.

[0108] In this application, as shown in Figures 5 and 6, when the second housing 200 includes at least one first auxiliary track member 203, the 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 member 203 and second auxiliary track member 303 can be offset in the second direction Y.

[0109] Thus, in the second housing 200 and the third housing 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 offset from the second track member 302 in the second direction Y. At the same time, the first auxiliary track member 203 and the second auxiliary track member 303 are offset in the second direction Y, so that the first track member 202 and the first auxiliary track member 203 in the second housing 200 will not overlap with the second track member 302 and the second auxiliary track member 303 in the third housing 300 in the direction perpendicular to the planar display portion 401. In this way, while ensuring that the display device in this application can be properly unfolded and retracted, the thickness of the display device is also small.

[0110] It should be noted that at least one first auxiliary track member 203 can be evenly distributed between two first track members 202. Thus, one first track member 202, at least one first auxiliary track member 203, and the other first track member 202 can be evenly arranged in the second direction Y. This allows the two first track members 202 and at least one first auxiliary track member 203 to apply a uniform supporting force to the first support bar 500, thereby ensuring a uniform supporting force on the flexible display panel 400. Similarly, at least one second auxiliary track member 303 can be evenly distributed between two second track members 302. This allows one second track member 302, at least one second auxiliary track member 303, and the other second track member 302 to be evenly arranged in the second direction Y. This allows the two second track members 302 and at least one second auxiliary track member 303 to apply a uniform supporting force to the second support bar 600, thereby ensuring a uniform supporting force on the flexible display panel 400. This ensures good flatness of the flexible display panel 400.

[0111] Optionally, the distance between the corresponding first auxiliary track member 203 and the second auxiliary track member 303 in the second direction Y can 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, which are located in the middle of the display device and are adjacent to each other in the second direction Y, can provide greater support for the flexible display panel 400, further improving the flatness of the flexible display panel 400.

[0112] Optionally, the length of the first support strip body 501 in the first support strip 500 can be equal to the length of the second support strip body 601 in the second support strip 600. In this way, in the second direction Y, both the first support strip body 501 and the second support strip body 601 can be used to support the display surface of the flexible display panel 400.

[0113] Optionally, please refer to FIG16, which is a cross-sectional view of another display device provided in an embodiment of this application. The flexible display panel 400 may further include a non-display portion 404 located on the side of the first rolled-up display portion 402 opposite to the flat display portion 401.

[0114] The display device may further include a support plate 700 and a circuit board 800. The support plate 700 is slidably connected to the second housing 200. The support plate 700 may have a support surface P, which is fixedly connected to the back of the non-display portion 404. The circuit board 800 is fixed to the support surface P. Thus, during the sliding of the second housing 200 relative to the first housing 100 to allow the first curled display portion 402 to roll up, the non-display portion 404 can also roll up under the sliding connection of the support plate 700 relative to the second housing 200. This effectively avoids warping of the non-display portion 404. Furthermore, it prevents the non-display portion 404 in the flexible display panel 400 from colliding with other structures, ensuring good reliability of the display device.

[0115] It should be noted that, referring to Figure 17, which is a partial top view of a display device provided in an embodiment of this application, the support plate 700 may have multiple rows of fourth sliding protrusions 701 arranged in an array on the side opposite to the support surface P. Each row of 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 two first track members 202 in the second housing 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, and will not be described again here. At least one second sub-sliding protrusion 7012 can be slidably connected to at least one second track member 203 in the second housing 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, and will not be described again here. Thus, the support plate 700 can be slidably connected to the second housing 200.

[0116] Optionally, as shown in Figures 16 and 17, the support plate 700 in the display device may have a clearance hole V, which can penetrate the support plate 700 in a direction perpendicular to the planar 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 can be fixed on the support surface P, and the components can be fixed on the side of the circuit board body 801 facing the support plate 7001. At least some of the components 802 can be located within the clearance hole V of the support plate 700. In this way, the components 802 in the circuit board 800 can be located on the side of the support plate 700 facing the planar display portion 401, so that the components 802 do not occupy additional space in the direction perpendicular to the planar display portion 401, thereby reducing the overall thickness of the display device.

[0117] It should be noted that the display device may also include a chip-on-flex (COF) film 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. Both ends of the COF film can be connected to the circuit board body 801 and the non-display portion 404, respectively. Both ends of the flexible circuit board can be connected to the components 802 and the non-display portion 404, respectively. Furthermore, since the components 802 are located on the side of the support plate 700 facing the flat panel display portion 401, compared to placing the components on the side of the support plate facing away from the flat panel display portion, the flexible circuit board does not need to bypass the end of the support plate 700 facing away from the non-display portion 404, thus preferentially avoiding the phenomenon of the flexible circuit board becoming entangled.

[0118] It should be noted that, as shown in Figure 17, the display device may include multiple circuit boards 800, and the support plate 700 may have clearance holes V corresponding one-to-one with the multiple circuit boards 800. For example, the display device may include three circuit boards 800, and the support plate 700 may have three clearance 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. In the three clearance holes V of the support plate 700, the first clearance hole V may be located between one first sub-sliding protrusion 7011 and one second sub-sliding protrusion 7012, the second clearance hole V may be located between one second sub-sliding protrusion 7012 and another second sub-sliding protrusion 7012, and the third clearance hole V may be located between another second sub-sliding protrusion 7012 and another first sub-sliding protrusion 7011.

[0119] In summary, this application provides a display device comprising: a first housing, a second housing, a third housing, and a flexible display panel. The flexible display panel in the display device can be normally unfolded and retracted, allowing the display device to be in an unfolded state and a retracted state. Furthermore, when the second housing and the third housing simultaneously slide away from the first housing to put the display device in the unfolded state, the display surface of the flat display portion can be located on the same plane as most areas of the first and second rolled-up display portions, allowing for simultaneous image display, resulting in a larger area of ​​the flexible display panel used for image display. When the second housing and the third housing simultaneously slide towards the first housing to put the display device in the retracted state, the first rolled-up display portion can slide into the second housing, and the second rolled-up display portion can slide into the third housing, allowing only the flat display portion of the flexible display panel to be used for image display, thereby reducing the size of the area of ​​the flexible display panel used for image display. Thus, the ratio between the size of the display surface when the display device is in the unfolded state and the size of the display surface when the display device is in the retracted state is relatively large. This allows the display device to have a small volume in the retracted state for easy carrying, while also having a large display surface in the unfolded state for displaying images.

[0120] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0121] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0122] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: First housing, second housing, third housing, and flexible display panel; The second housing and the third housing are respectively distributed on both sides of the first housing in a first direction, and both the second housing and the third housing are slidably connected to the first housing; The flexible display panel includes: a flat display portion, and a first rolled display portion and a second rolled display portion located on both sides of the flat display portion in the first direction; the flat display portion is fixed to the first housing; the first rolled display portion includes: a first flat portion arranged parallel to the flat display portion, and a first curved portion located between the first flat portion and the flat display portion, the first curved portion being wound around the side of the second housing opposite to the first housing; the second rolled display portion includes: a second flat portion arranged parallel to the flat display portion, and a second curved portion located between the second flat portion and the flat display portion, the second curved portion being wound around the side of the third housing opposite to the first housing; 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 flat display portion, at least a portion of the first flat portion is located between the flat display portion and the second flat portion.

2. The display device according to claim 1, characterized in that, The second housing includes: a first mounting shell and two first track members, the two first track members being fixedly connected to both ends of the first mounting shell in a second direction; the first curved portion is wound around the side of the first mounting shell opposite to the first housing; The third housing includes: a second mounting housing and two second track members, the two second track members being arranged in the second direction; the two second track members being fixedly connected to both ends of the second mounting housing in the second direction; and the second curved portion being wound around the side of the second mounting housing opposite to the first housing. Wherein, the two first track members are used to slide and connect with the first curled display portion, and the two second track members are used to slide and connect with the second curled display portion; for a first track member and a second track member distributed on the same side of the display device, the first track member and the second track member are offset 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 portion and intersects with the first direction.

3. The display device according to claim 2, characterized in that, The display device further includes: 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 of the first curled display portion, and the two ends of the first support bars are slidably connected to the two first track components respectively; The plurality of second support bars are fixedly connected to the back of the second curled display portion, and the two ends of the second support bars are slidably connected to the two second track components respectively.

4. The display device according to claim 3, characterized in that, The first support bar includes: a first support bar body and two first sliding protrusions; the first support bar body is fixedly connected to the back of the first curled display portion; the two first sliding protrusions are fixedly connected to the side of the first support bar body away from the first curled display portion, and the two first sliding protrusions are respectively slidably connected to the two first track components. 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 the corresponding positions.

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

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

7. The display device according to claim 4, characterized in that, The second housing further includes: 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 housing; The first support bar further includes at least one first auxiliary sliding protrusion fixedly connected to the side of the first support bar body opposite to the first curled display portion, wherein the at least one first auxiliary sliding protrusion is slidably connected to the at least one first auxiliary track component in a one-to-one correspondence.

8. The display device according to any one of claims 3-7, characterized in that, The second support strip includes: a second support strip body and two second sliding protrusions; the second support strip 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 strip body, and the two second sliding protrusions are respectively slidably connected to the two second track components; 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 track member has a second groove on the side facing the first track member; at least a portion of the second sliding protrusion is located within the second groove and is slidably connected to the second groove.

10. The display device according to claim 8, characterized in that, The third housing further includes: 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 housing; The second support bar further includes at least one second auxiliary sliding protrusion fixedly connected to the side of the second support bar body opposite to the second curled display portion, wherein the at least one second auxiliary sliding protrusion is slidably 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 housing includes at least one first auxiliary track member, the at least one first auxiliary track member corresponds one-to-one with the at least one second auxiliary track member, and the corresponding first auxiliary track member and second auxiliary track member are offset in the second direction.

12. The display device according to claim 11, characterized in that, The corresponding distance between the first auxiliary track and the second auxiliary track in the second direction is less than or equal to the distance between the first track and the second track 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 and 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 1-7 and 9-12, characterized in that, The flexible display panel further includes a non-display portion located on the side of the first rollable display portion that faces 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 housing, and the support plate has a support surface, which is fixedly connected to the back of the non-display portion; the circuit board is fixed to the support surface.

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

Images