Display device

Abstract

A display device is provided. The display device comprises: a housing (7); a first cover plate (12); a second cover plate (15); a back plate (20); a first chamber (C1) between the housing (7) and the first cover plate (12); a second chamber (C2) between the first cover plate (12) and the second cover plate (15); and a third chamber (C3) between the second cover plate (15) and the back plate (20). The first chamber (C1) is a waterproof chamber. The third chamber (C3) is a waterproof chamber. The display device further comprises: a second opening (12-1) extending through the first cover plate (12); a third opening (15-1) extending through the second cover plate (15); a first sealing ring (13-1); and a second sealing ring (13-2). The second opening (12-1) and the third opening (15-1) are aligned with each other and connected to each other to establish a connection between the first chamber (C1) and the third chamber (C3). The first sealing ring (13-1) and the second sealing ring (13-2) are configured to make the second opening (12-1) and the third opening (15-1) waterproof.

Description

Technical Field

[0001] The present invention relates to display technology, and more particularly to a display device. Background Art

[0002] Flexible displays have advantages such as being bendable and rollable, providing the possibility for the design of new form display devices. A rollable display device refers to a display technology that can be wound or wrapped around an object (e.g., a cylindrical object) without damaging the screen or affecting its function. It is usually composed of a flexible screen material that can be rolled up and unfolded, facilitating portability and storage. The rollable display device provides the advantages of high flexibility and versatility, giving users the ability to adjust the size and shape of the display according to their needs. Summary of the Invention

[0003] On the one hand, the present disclosure provides a display device, including: a housing; a first cover plate; a second cover plate; a back plate; a first chamber located between the housing and the first cover plate; a second chamber located between the first cover plate and the second cover plate; and a third chamber located between the second cover plate and the back plate; wherein, the first chamber is a waterproof chamber; and the third chamber is a waterproof chamber; wherein, the display device further includes: a second opening extending through the first cover plate; and a third opening extending through the second cover plate; wherein, the third opening connects the first chamber and the third chamber; and the third opening is at least partially located in the second opening.

[0004] Optionally, the second cover plate includes a baffle and a main body, the baffle protrudes away from the main body towards the first cover plate; and the baffle is in direct contact with the first cover plate, thereby closing the second chamber.

[0005] Optionally, the display device further includes a groove extending into the second cover plate; wherein, the baffle separates the second chamber from the groove; a part of the first cover plate extends into the groove, thereby interlocking with the second cover plate; and the part of the first cover plate extending into the groove is at least partially in contact with a first sealing ring and at least partially in contact with a second sealing ring.

[0006] Optionally, the first cover plate includes a first tubular structure protruding towards the second cover plate, the second opening is an opening of the first tubular structure; the second cover plate includes a second tubular structure protruding towards the first cover plate, the third opening is an opening of the second tubular structure; and the second tubular structure is inserted into the first tubular structure.

[0007] Optionally, the display device further includes a first sealing ring and a second sealing ring located between the inner wall of the first tubular structure and the outer wall of the second tubular structure, so as to prevent water from passing between the inner wall of the first tubular structure and the outer wall of the second tubular structure.

[0008] Optionally, the display device further includes a water storage space located between the first sealing ring and the second sealing ring, which is configured to further prevent water from passing through the second sealing ring.

[0009] Optionally, the display device further includes: a main board, which is accommodated in the first chamber; an adapter board, which is accommodated in the third chamber; and an adapter flexible printed circuit, which is connected to the main board accommodated in the first chamber and connected to the adapter board accommodated in the third chamber; wherein, the adapter flexible printed circuit extends from the first chamber, through the third opening, and into the third chamber.

[0010] Optionally, the display device further includes a second bonding structure, which is configured to fixedly mount the first cover plate to the housing, thereby forming the first chamber; wherein, the housing further includes a fourth groove configured to accommodate the second bonding structure.

[0011] Optionally, the display device further includes a third bonding structure, which is configured to fixedly mount the back plate to the second cover plate, thereby forming the third chamber; wherein, the second cover plate further includes a fifth groove configured to accommodate the third bonding structure.

[0012] Optionally, the display device further includes: a flexible display panel, which is configured to switch between a folded state and an unfolded state; and a push rod; wherein, the push rod and the housing are jointly configured to cause the flexible display panel to switch between the folded state and the unfolded state; and the second chamber is configured to accommodate a part of the flexible display panel.

[0013] Optionally, the flexible display panel bends around the support portion of the push rod; the push rod is slidably mounted to the housing; the push rod can move slidably relative to the housing; and the flexible display panel is configured to switch between the folded state and the unfolded state as the push rod moves slidably relative to the housing.

[0014] Optionally, the push rod is a comb-shaped push rod, which includes a plurality of teeth; the housing includes a plurality of grooves, and the plurality of grooves are configured to accommodate the plurality of teeth of the push rod; and at least one of the plurality of teeth of the push rod includes a start-stop limit structure, which is configured to define the limit of the slidable movement of the push rod relative to the housing.

[0015] Optionally, the display device further includes a first bonding structure configured to mount the flexible display panel to the housing; and the first bonding structure is configured to form a sealed chamber between the flexible display panel and the housing.

[0016] Optionally, the flexible display panel includes a pad bending region; and the first bonding structure is configured to fixedly mount the pad bending region of the flexible display panel to the frame portion of the housing.

[0017] Optionally, the housing further includes a second groove configured to at least partially accommodate the first bonding structure; and the first bonding structure at least partially extends into and is mounted in the second groove of the housing.

[0018] Optionally, the display device further includes: a push rod; and an outer shell mounted to the housing and to the push rod; wherein the display device has a first display area and a second display area; and the first display area can slide open to increase the total display area of the display device or can retract to reduce the total display area of the display device; wherein the outer shell wraps a portion of the flexible display panel that is bent around the support portion of the push rod; when at least a portion of the first display area retracts, the outer shell also wraps the portion of the first display area; and the outer shell also wraps the side edges of the flexible display panel.

[0019] Optionally, the outer shell includes a first protrusion; the housing includes a first groove; the first protrusion and the first groove are configured to be interlocked with each other to mount the outer shell to the housing; and the first groove is a blind groove.

[0020] Optionally, the display device further includes: a torsion spring; and a pin shaft; wherein the pin shaft is configured to mount the torsion spring to the housing; the pin shaft is movably mounted to the housing; a first portion of the torsion spring is mounted to the pin shaft, and a second portion of the torsion spring is mounted to the flexible display panel to provide a tension mechanism for the flexible display panel; and the torsion spring and the pin shaft are accommodated in the second chamber.

[0021] Optionally, the second cover plate includes a second protrusion; the housing includes a third groove; the second protrusion and the third groove are configured to be interlocked with each other to fix the pin shaft; and the pin shaft passes through the torsion spring to achieve fixation of the torsion spring.

[0022] Optionally, the display device further includes: a main board, which is accommodated in the first chamber; a first opening, which extends through the side surface of the housing; and a flexible printed circuit, which is connected to the flexible display panel and connected to the main board; wherein, the flexible printed circuit extends through the first opening into the first chamber to be connected to the main board. Description of the Drawings

[0023] According to various disclosed embodiments, the following drawings are merely examples for illustrative purposes and are not intended to limit the scope of the present invention.

[0024] Figure 1 is a schematic diagram showing the folded state of a display device according to some embodiments of the present disclosure.

[0025] Figure 2 is a schematic diagram showing the unfolded state of a display device according to some embodiments of the present disclosure.

[0026] Figure 3 is an exploded view of a display device according to some embodiments of the present disclosure.

[0027] Figure 4 is along Figure 1 the cross-sectional view taken along line A-A' in, showing the first chamber, the second chamber and the third chamber in a display device according to some embodiments of the present disclosure.

[0028] Figure 5 is an exploded view showing the housing, the flexible display panel, the push rod and the housing in a display device according to some embodiments of the present disclosure.

[0029] Figure 6 is the cross-sectional view taken along line B-B' when the housing, the flexible display panel, the push rod and the housing are assembled together along Figure 5 in.

[0030] Figure 7 is a schematic diagram showing a part of a display device, where the housing, the flexible display panel, the push rod and the housing are assembled together.

[0031] Figure 8 is an exploded view of the flexible display panel, the push rod, the housing and the first bonding structure in a display device according to some embodiments of the present disclosure.

[0032] Figure 9 is along Figure 8 the cross-sectional view taken along line C-C' in.

[0033] Figure 10 shows the tensioning mechanism for the flexible display panel in a display device according to some embodiments of the present disclosure.

[0034] Figure 11 is a schematic diagram showing a clock spring assembly in a display device according to some embodiments of the present disclosure.

[0035] Figure 12 is part of a perspective view of a display device assembled with the clock spring assembly depicted in Figure 11 the clock spring assembly depicted in

[0036] Figure 13 is a cross-sectional view along the Figure 11 D-D' line in

[0037] Figure 14 is a perspective view of part of a display device according to some embodiments of the present disclosure.

[0038] Figure 15 is Figure 14 an exploded view of part of the display device depicted in

[0039] Figure 16 is a cross-sectional view along the Figure 14 E-E' line in

[0040] Figure 17 shows a waterproof mechanism in a display device according to some embodiments of the present disclosure.

[0041] Figure 18 is Figure 17 an enlarged view of the enlarged area ZR depicted in Detailed Description

[0042] The present disclosure will now be described more specifically with reference to the following embodiments. It should be noted that the following description of some embodiments presented herein is for illustrative and descriptive purposes only. It is not exhaustive or limited to the precise forms disclosed.

[0043] The present disclosure particularly provides a display device that substantially eliminates one or more problems resulting from the limitations and disadvantages of the prior art. In some embodiments, the display device includes: a housing; a first cover plate; a second cover plate; a back plate; a first chamber located between the housing and the first cover plate; a second chamber located between the first cover plate and the second cover plate; and a third chamber located between the second cover plate and the back plate. Optionally, the first chamber is a waterproof chamber. Optionally, the third chamber is a waterproof chamber. Optionally, the display device further includes: a second opening extending through the first cover plate; a third opening extending through the second cover plate; a first sealing ring; and a second sealing ring. Optionally, the second opening and the third opening are aligned with each other and connected to each other to establish a connection between the first chamber and the third chamber. Optionally, the first sealing ring and the second sealing ring are configured to make the second opening and the third opening waterproof.

[0044] Figure 1 is a schematic diagram showing the folded state of a display device in some embodiments according to the present disclosure. Figure 2 is a schematic diagram showing the unfolded state of a display device in some embodiments according to the present disclosure. The folded state refers to the configuration of the display device when the display device is rolled up or folded or shrunk into a smaller size or shape. In the folded state, the components or parts of the display device are put together to reduce its overall size for storage, portability, or convenience. The unfolded state refers to the opposite configuration of the display device when the display device is at least partially (e.g., fully) stretched or spread out or unfolded or enlarged to an enlarged size or shape. In the unfolded state, the components or parts of the display device are unfolded or separated to achieve a larger surface area and / or increased functionality and / or improved usability. Referring to Figure 1 and Figure 2 , the display device has a first display area 1 and a second display area 2. In one example, the second display area 2 is a fixed display area, while the first display area 1 is a sliding and rolling display area. The display device can slide open in the first display area 1 to increase the total display area of the display device, or can retract to reduce the total display area of the display device. The display device does not undergo any sliding and rolling movement in the second display area 2, and thus does not cause a change in the total display area of the display device. In some embodiments, the display device further includes a wristband 3, which can be worn on the wrist to achieve the wearable functionality of the display device.

[0045] Figure 3 is an exploded view of a display device in some embodiments according to the present disclosure. Referring to Figure 3 , in some embodiments, the display device includes a housing 4, a flexible display panel 5, a push rod 6, and a housing body 7.

[0046] In some embodiments, the push rod 6 and the housing body 7 are jointly configured to convert the flexible display panel 5 between a folded state (e.g., referring to Figure 1 ) and an unfolded state (e.g., referring to Figure 2 ). In some embodiments, the housing 4 is mounted (e.g., movably mounted) to the housing body 7. In one example, the housing 4 is interlocked with the housing body 7 (e.g., snapped into the housing body 7). In some embodiments, the housing 4 is mounted (e.g., fixedly mounted) to the push rod 6. In one example, the housing 4 is bolted to the push rod 6.

[0047] In some embodiments, the flexible display panel 5 bends around the support portion of the push rod 6. In one example, the housing 4 wraps the portion of the flexible display panel 5 that bends around the support portion of the push rod 6. Optionally, when at least a part of the first display area retracts, the housing 4 also wraps this part of the first display area. Optionally, the housing 4 also wraps the side edges of the flexible display panel 5.

[0048] In some embodiments, the push rod 6 is slidably mounted to the housing 7. Optionally, the push rod 6 is slidably movable relative to the housing 7. In some embodiments, the push rod 6 is a comb-shaped push rod that includes a plurality of teeth 6-1. In some embodiments, the housing 7 includes a plurality of slots 7-1 that are configured to receive the plurality of teeth 6-1 of the push rod 6. In some embodiments, when the push rod 6 is slidably moved relative to the housing 7, the outer shell 4 moves together with the push rod 6. The flexible display panel 5 is configured to transition between a folded state and an unfolded state when the push rod 6 is slidably moved relative to the housing 7.

[0049] In some embodiments, the push rod 6 includes a start-stop limiting structure 6-2 that is configured to define the limit of the slidable movement of the push rod 6 relative to the housing 7. For example, the start-stop limiting structure 6-2 is configured to prevent over-extension of the push rod 6. In one example, at least one of the plurality of teeth 6-1 of the push rod 6 includes the start-stop limiting structure 6-2, as Figure 3 depicted.

[0050] Referring Figure 3 , in some embodiments, the display device further includes a first bonding structure 8 that is configured to fixedly mount the flexible display panel 5 to the housing 7. Optionally, the first bonding structure 8 is configured to form a sealed chamber between the flexible display panel 5 and the housing 7 when the first bonding structure 8 mounts the flexible display panel 5 to the housing 7. In some embodiments, the flexible display panel 5 includes a pad bending region. Optionally, the first bonding structure 8 is configured to fixedly mount the pad bending region of the flexible display panel 5 to the frame portion of the housing 7. In one example, the first bonding structure 8 includes an adhesive material, such as a waterproof resin adhesive.

[0051] Referring Figure 3 , in some embodiments, the display device further includes a torsion spring 9 and a pin 10. Optionally, the pin 10 is configured to mount the torsion spring 9 to the housing 7. Optionally, the pin 10 is movably mounted to the housing 7.

[0052] In some embodiments, the torsion spring 9 is configured to provide tension to the flexible display panel 5. Optionally, the torsion spring 9 is mounted to a portion (e.g., an end) of the flexible display panel 5. In one example, the torsion spring 9 is mounted to this portion of the flexible display panel 5 by an adhesive.

[0053] Referring Figure 3 , in some embodiments, the display device further includes a button 11-1 and a crown 11-2, and the button 11-1 and the crown 11-2 are mounted on the housing 7.

[0054] Referring Figure 3, in some embodiments, the display device further includes a first cover plate 12 configured to cover the housing 7. Optionally, the display device further includes a second bonding structure 14 configured to fixedly mount the first cover plate 12 to the housing 7. In one example, the second bonding structure 14 includes an adhesive material, such as a waterproof resin adhesive.

[0055] Figure 4 is a schematic diagram showing a first chamber, a second chamber, and a third chamber in a display device according to some embodiments of the present disclosure. Refer to Figure 3 and Figure 4 , in some embodiments, the display device further includes a first chamber c1 located between the first cover plate 12 and the housing 7. The second bonding structure 14 is configured to seal the first chamber c1. In some embodiments, the display device further includes a main board 17, and the first chamber c1 is configured to accommodate the main board 17. Optionally, the first chamber c1 is further configured to accommodate a battery, a motor, and / or other suitable components. The first chamber c1 is waterproof.

[0056] In some embodiments, the display device further includes a flexible printed circuit connected to the flexible display panel 5 and connected to the main board 17. In some embodiments, the flexible printed circuit enters the first chamber c1 through a first opening 7-2 extending through a side of the housing 7 and is connected to the main board 17 accommodated in the first chamber c1.

[0057] Refer to Figure 3 , in some embodiments, the display device further includes a second cover plate 15 configured to cover a portion of the first display area when at least a portion of the first display area is retracted. In some embodiments, the second cover plate 15 is mounted to the first cover plate 12. In one example, the second cover plate 15 is mounted to the first cover plate 12 by bolts. In another example, the second cover plate 15 is mounted to the first cover plate 12 by glue (or adhesive).

[0058] Refer to Figure 3 and Figure 4 , in some embodiments, the display device further includes a second chamber c2 located between the first cover plate 12 and the second cover plate 15. Optionally, the second chamber c2 is configured to accommodate a portion of the flexible display panel 5. For example, when the flexible display panel 5 is converted from an unfolded state to a folded state, at least a portion of the flexible display panel 5 is accommodated in the second chamber c2. In one example, when the flexible display panel 5 is converted from an unfolded state to a folded state, at least a portion of the flexible display panel 5 corresponding to the first display area 1 is accommodated in the second chamber c2. In some embodiments, the second chamber c2 is further configured to accommodate a torsion spring 9 and a pin shaft 10.

[0059] The second chamber c2 can be a sealed chamber or an unsealed chamber. In one example, the second chamber c2 is not sealed, for example, it is not a waterproof chamber.

[0060] Referring Figure 3 , in some embodiments, the display device further includes a backplane 20. Referring Figure 3 and Figure 4 , in some embodiments, the display device further includes a third chamber c3 located between the backplane 20 and the second cover plate 15. In some embodiments, the display device further includes a third bonding structure 19 configured to fixedly mount the backplane 20 to the second cover plate 15. In some embodiments, the third bonding structure 19 is configured to form a sealed chamber (the third chamber c3) between the backplane 20 and the second cover plate 15 when the third bonding structure 19 mounts the backplane 20 to the second cover plate 15. In one example, the third bonding structure 19 includes an adhesive material, such as a waterproof resin adhesive. The third chamber c3 is waterproof.

[0061] Referring Figure 3 , in some embodiments, the display device further includes an adapter board 16. In some embodiments, the third chamber c3 is configured to accommodate the adapter board 16. Optionally, the third chamber c3 is further configured to accommodate one or more health monitoring sensors.

[0062] Referring Figure 3 , in some embodiments, the display device further includes a second opening 12-1 extending through the first cover plate 12, and a third opening 15-1 extending through the second cover plate 15. Optionally, the first cover plate 12 includes a first tubular structure 21 protruding toward the second cover plate 15 (also referring to Figure 15 , Figure 17 and Figure 18 ). The second opening 12-1 is the opening of the first tubular structure 21. Optionally, the second cover plate 15 includes a second tubular structure 22 protruding toward the first cover plate 12 (also referring to FIG. 25, Figure 17 and Figure 18 ). The third opening 15-1 is the opening of the second tubular structure 22. Optionally, the second tubular structure 22 is inserted into the first tubular structure 21. As used herein, the cross-section of the tubular structure can have various suitable shapes, for example, including an irregular ring, a regular ring, a circular ring, an oval ring, a rectangular ring, a snip corner rectangular ring, a rounded corner rectangular ring, a square ring, a polygonal ring, and an elliptical ring. The tubular structure can have a uniform or non-uniform cross-section along its length. The shape and / or size of the cross-section of the tubular structure can vary along its length. The length of the tubular structure can be greater than, equal to, or less than the width of the tubular structure.

[0063] Referring Figure 3, in some embodiments, the display device further includes an adapter flexible printed circuit 18. In some embodiments, the adapter flexible printed circuit 18 is connected to the main board 17 accommodated in the first chamber c1 and is connected to the adapter board 16 accommodated in the third chamber c3. Optionally, the adapter flexible printed circuit 18 extends from the first chamber c1, through the third opening 15-1, and then into the third chamber c3.

[0064] Referring to Figure 3 , in some embodiments, the display device further includes one or more sealing rings 13 (e.g., a first sealing ring and a second sealing ring) located between the inner wall of the first tubular structure 21 and the outer wall of the second tubular structure 22 to prevent water from passing through the space between the inner wall of the first tubular structure 21 and the outer wall of the second tubular structure 22. Optionally, the one or more sealing rings 13 are in direct contact with the inner wall of the first tubular structure 21 and in direct contact with the outer wall of the second tubular structure 22.

[0065] Figure 5 is an exploded view showing the housing, the flexible display panel, the push rod, and the housing in the display device according to some embodiments of the present disclosure. Figure 6 is a cross-sectional view taken along the line B-B' in Figure 5 when the housing, the flexible display panel, the push rod, and the housing are assembled together. Figure 7 is a schematic view showing a part of the display device, in which the housing, the flexible display panel, the push rod, and the housing are assembled together. As described above, in some embodiments, the push rod 6 and the housing 7 are jointly configured to convert the flexible display panel 5 between a folded state and an unfolded state. In some embodiments, the housing 4 is mounted (e.g., movably mounted) to the housing 7. Referring to Figures 5 to 7 , in some embodiments, the display device further includes a bolt 4-1. In some embodiments, the housing 4 is mounted to the push rod 6 by the bolt 4-1.

[0066] In some embodiments, the flexible display panel 5 bends around the support portion 6-2 of the push rod 6. In one example, the housing 4 wraps the portion of the flexible display panel 5 that bends around the support portion 6-2 of the push rod 6, as depicted in Figure 7 .

[0067] In some embodiments, referring to Figures 5 to 7, the outer shell 4 is mounted to (e.g., movably mounted to) the housing 7. In one example, the outer shell 4 is interlocked with the housing 7. In some embodiments, the outer shell 4 includes a first protrusion 4-2, and the housing 7 includes a first groove 7-3. The first protrusion 4-2 and the first groove 7-3 are configured to be interlocked with each other, thereby mounting the outer shell 4 to the housing 7. In one example, the first protrusion 4-2 is a dovetail protrusion, and the first groove 7-3 is a dovetail groove. In one example, the first groove 7-3 is a blind groove, e.g., the first groove 7-3 does not extend through the wall of the housing along the B-B' direction. The blind groove only partially extends into the wall of the housing 7.

[0068] In some embodiments, the first groove 7-3 only partially extends along the length direction of the wall of the housing 7. Optionally, the length direction of the wall of the housing 7 is substantially parallel to the slidable movement direction between the first protrusion 4-2 and the first groove 7-3. The inventors of the present disclosure have found that by making the first groove 7-3 only partially extend along the length direction of the wall of the housing 7, when the display device is in the unfolded state, the first groove 7-3 is not exposed. In a specific example depicted in Figure 2 , when the display device is in the unfolded state or the folded state, the first groove 7-3 is completely covered by the outer shell 4.

[0069] In alternative embodiments, the display device further includes one or more ball bearings between the first protrusion 4-2 and the first groove 7-3. The one or more ball bearings can roll between the first protrusion 4-2 and the first groove 7-3 to reduce the contact area and minimize the friction. Adding one or more ball bearings improves the smoothness and efficiency of the sliding movement.

[0070] In alternative embodiments, the display device further includes a start-stop limiting structure configured to define the limit of the slidable movement of the outer shell 4 relative to the housing 7. For example, the start-stop limiting structure is configured to prevent the over-extension of the outer shell 4.

[0071] Figure 8 is an exploded view of a flexible display panel, a push rod, a housing, and a first bonding structure in a display device according to some embodiments of the present disclosure. Figure 9 is along Figure 8 in the sectional view taken along the C-C' line in Figure 10 shows a tensioning mechanism for a flexible display panel in a display device according to some embodiments of the present disclosure. In some embodiments, the flexible display panel 5 bends around the support portion of the push rod 6.

[0072] In some embodiments, a portion of the flexible display panel 5 corresponding to the second display area 2 is bonded to the housing 7 through a first bonding structure 8. In some embodiments, the flexible display panel 5 includes a pad bending area 5-1. Optionally, the pad bending area 5-1 is bonded to the housing 7 through the first bonding structure 8 to ensure the hermetic encapsulation of the electronic components within the pad bending area 5-1.

[0073] In some embodiments, the housing 7 further includes a second groove 7-4 configured to at least partially receive the first bonding structure 8. The first bonding structure 8 at least partially extends into the second groove 7-4 of the housing 7 and is installed in the second groove 7-4.

[0074] In some embodiments, the display device further includes a first opening 7-2 extending through a side surface of the housing 7. In some embodiments, the display device further includes a flexible printed circuit FPC connected to the flexible display panel 5 and connected to the main board 17 housed in the first chamber c1. In some embodiments, the flexible printed circuit FPC extends through the first opening 7-2 into the first chamber c1 to connect to the main board 17.

[0075] Referring Figure 10 , in some embodiments, the display device further includes a clock spring 9 and a pin shaft 10. Optionally, the pin shaft 10 is configured to mount the clock spring 9 to the housing. Optionally, the pin shaft 10 is movably mounted to the housing 7. A first portion of the clock spring 9 is connected to the pin shaft 10, and a second portion of the clock spring 9 is connected to the flexible display panel 5, thereby providing a tensioning mechanism for the flexible display panel 5. In one example, the clock spring 9 is connected to the flexible display panel 5 using glue. In another example, the clock spring 9 is mounted to the flexible display panel 5 using a locating pin.

[0076] Various alternative embodiments may be practiced in the present disclosure. In an alternative embodiment, a tensioning cord may be used instead of the clock spring as the tensioning mechanism. A first portion of the tensioning cord is mounted to the pin shaft, and a second portion of the tensioning cord is mounted to the flexible display panel, thereby providing a tensioning mechanism for the flexible display panel.

[0077] Figure 11 is a schematic diagram showing a clock spring assembly in a display device according to some embodiments of the present disclosure. Figure 12 is by Figure 11 A perspective view of a part of a display device assembled with the clock spring assembly depicted in. Figure 13 is when the second cover plate, the housing, the clock spring, and the pin shaft are assembled together and the assembly is turned upside down along Figure 11 A cross-sectional view taken along line D-D' in. Similarly, Figure 12 shows a perspective view of a part of the display device when the second cover plate 15, the housing 7, the clock spring 9, and the pin shaft 10 are assembled together and the assembly is turned upside down. Figure 11Shows the first side (e.g., the inner side) of the housing 7, Figure 12 and Figure 13 shows the second side (e.g., the outer side) of the housing 7. Referring to Figures 11 to 13 , in some embodiments, the second cover plate 15 includes a second protrusion 15-2, and in some embodiments, the housing 7 includes a third groove 7-4. The second protrusion 15-2 and the third groove 7-4 are configured to be interlocked with each other to fix the pin shaft 10. The pin shaft 10 passes through the coil spring 9, thereby realizing the fixation of the coil spring 9.

[0078] Figure 14 is a perspective view of a part of a display device according to some embodiments of the present disclosure. Figure 15 is Figure 14 an exploded view of a part of the display device depicted in Figure 16 is a cross-sectional view taken along the line E-E' in Figure 14 . Referring to Figures 14 to 16 , in some embodiments, the main board 17 is mounted (e.g., fixedly mounted) to the housing 7. In one example, the main board 17 is mounted to the housing 7 by glue. In another example, the main board 17 is bolted to the housing 7.

[0079] In some embodiments, the housing 7 further includes a fourth groove 7-5, which is configured to receive the second bonding structure 14. The second bonding structure 14 is configured to mount the first cover plate 12 to the housing 7, thereby forming a first chamber c1. In some embodiments, the first cover plate 12 is mounted to the housing 7 by a combination of the second bonding structure 14 and bolts.

[0080] In some embodiments, the first cover plate 12 is mounted to the second cover plate 15, thereby forming a second chamber c2.

[0081] In some embodiments, the back plate 20 is mounted to the second cover plate 15 by a third bonding structure 19, thereby forming a third chamber c3. In some embodiments, the second cover plate 15 further includes a fifth groove 15-3 configured to receive the third bonding structure 19.

[0082] Referring to Figure 3 , in some embodiments, the display device further includes a second opening 12-1 extending through the first cover plate 12 and a third opening 15-1 extending through the second cover plate 15. Optionally, the third opening 15-1 is at least partially located in the second opening 12-1.

[0083] In some embodiments, the first cover plate 12 includes a first tubular structure 21 protruding toward the second cover plate 15. The second opening 12-1 is an opening of the first tubular structure 21. Optionally, the second cover plate 15 includes a second tubular structure 22 protruding toward the first cover plate 12. The third opening 15-1 is an opening of the second tubular structure 22. Optionally, the second tubular structure 22 is inserted into the first tubular structure 21. In some embodiments, the transfer flexible printed circuit 18 extends from the first chamber c1, through the third opening 15-1, and then extends into the third chamber c3.

[0084] Figure 17 A waterproof mechanism in a display device according to some embodiments of the present disclosure is shown. Figure 18 for Figure 17 Magnified view of the enlarged area ZR depicted in FIG. Figure 17 and Figure 18 , the shaded arrows indicate the hypothetical water infiltration paths, which are blocked by the waterproof mechanism in the display device. Figure 17 and Figure 18 As shown, water in the hypothetical water infiltration path would first have to overcome gravity (e.g. Figure 18 As shown by the second shaded arrow in the figure, the water flows from the second chamber c2 into the gap between the second cover plate 15 and the first cover plate 12. Assuming that the water overcomes gravity and passes through the gap, the water will have to overcome several additional obstacles to enter the first chamber c1. First, the water that passes through the gap must overcome gravity again to enter the first chamber c1 (as shown in the figure). Figure 18 ). Secondly, water that overcomes gravity will have to overcome the obstruction of the first sealing ring 13-1, which is an interference fit sealing ring. Thirdly, water that passes through the first sealing ring 13-1 will have to overcome the obstruction of the second sealing ring 13-2, which is also an interference fit sealing ring. In addition, the display device also includes a water storage space q located between the first sealing ring 13-1 and the second sealing ring 13-2. If any, the water storage space q provides a buffer for the water flowing through the first sealing ring 13-1 before it encounters the second sealing ring 13-2. The water storage space q also prevents high-pressure water from passing through the first sealing ring 13-1 and the second sealing ring 13-2 due to the high pressure.

[0085] In some embodiments, the display device further comprises a hydrophobic material layer coated on the inner wall of the second chamber c2. Optionally, the hydrophobic material layer is hydrophobic and oleophobic. Examples of suitable materials for preparing the hydrophobic material layer include fluoropolymer materials. In the case where water enters the second chamber c2, the user can tilt the display device to allow the water to flow out quickly.

[0086] Reference Figures 1 to 18, in some embodiments, the display device includes a housing 7, a first cover plate 12, a second cover plate 15, and a back plate 20. The display device includes: a first chamber c1 located between the housing 7 and the first cover plate 12; a second chamber c2 located between the first cover plate 12 and the second cover plate 15; and a third chamber c3 located between the second cover plate 15 and the back plate 20. Optionally, the first chamber c1 is a waterproof chamber. Optionally, the third chamber c3 is a waterproof chamber.

[0087] In some embodiments, referring to Figures 1 to 18 , the display device further includes a second opening 12-1 extending through the first cover plate 12, a third opening 15-1 extending through the second cover plate 15, a first sealing ring 13-1, and a second sealing ring 13-2. Optionally, the third opening 15-1 is at least partially located in the second opening 12-1. Optionally, the third opening connects the first chamber c1 and the third chamber c3.

[0088] In some embodiments, the first cover plate 12 includes a first tubular structure 21 protruding toward the second cover plate 15. The second opening 12-1 is an opening of the first tubular structure 21. Optionally, the second cover plate 15 includes a second tubular structure 22 protruding toward the first cover plate 12. The third opening 15-1 is an opening of the second tubular structure 22. Optionally, the second tubular structure 22 is inserted into the first tubular structure 21. Optionally, the first sealing ring 13-1 and the second sealing ring 13-2 are located between the inner wall of the first tubular structure 21 and the outer wall of the second tubular structure 22 to prevent water from passing through the space between the inner wall of the first tubular structure 21 and the outer wall of the second tubular structure 22. Optionally, the first sealing ring 13-1 and the second sealing ring 13-2 are in direct contact with the inner wall of the first tubular structure 21 and in direct contact with the outer wall of the second tubular structure 22.

[0089] In some embodiments, referring to Figure 17 and Figure 18 , the second cover plate 15 includes a baffle BR and a main body MB, and the baffle BR protrudes away from the main body MB toward the first cover plate 12. The baffle BR is in direct contact with the first cover plate 12.

[0090] In some embodiments, referring to Figure 17 and Figure 18 , the display device includes a groove CG extending into the second cover plate 15, and the baffle BR separates the second chamber c2 from the groove CG. A part of the first cover plate 12 extends into the groove CG, thereby interlocking with the second cover plate 15. The part of the first cover plate 12 extending into the groove CG is at least partially in contact with the first sealing ring 13-1 and at least partially in contact with the second sealing ring 13-2.

[0091] In some embodiments, referring to Figure 17 and Figure 18, the display device further includes a water storage space located between the first sealing ring 13-1 and the second sealing ring 13-2, and the water storage space is configured to further prevent water from passing through the second sealing ring 13-2.

[0092] In some embodiments, referring to Figures 1 to 18 , the display device further includes a main board 17 accommodated in the first chamber c1, an adapter board 16 accommodated in the third chamber c3, and an adapter flexible printed circuit 18 connected to the main board 17 accommodated in the first chamber c1 and connected to the adapter board 16 accommodated in the third chamber c3. Optionally, the adapter flexible printed circuit 18 extends from the first chamber c1, through the third opening 15-1, and then into the third chamber c3.

[0093] In some embodiments, referring to Figures 1 to 18 , the display device further includes a second bonding structure 14 configured to fixedly mount the first cover plate 12 to the housing 7, thereby forming the first chamber c1.

[0094] In some embodiments, referring to Figures 1 to 18 , the housing 7 further includes a fourth groove 7-5 configured to accommodate the second bonding structure 14.

[0095] In some embodiments, referring to Figures 1 to 18 , the display device further includes a third bonding structure 19 configured to fixedly connect the back plate 20 to the second cover plate 15, thereby forming the third chamber c3.

[0096] In some embodiments, referring to Figures 1 to 18 , the second cover plate 15 further includes a fifth groove 15-3 configured to accommodate the third bonding structure 19.

[0097] In some embodiments, referring to Figures 1 to 18 , the display device further includes a flexible display panel 5, a push rod 6, and a housing 7 configured to be switched between a folded state and an unfolded state. Optionally, the push rod 6 and the housing 7 are jointly configured to switch the flexible display panel 5 between the folded state and the unfolded state. Optionally, the second chamber c2 is configured to accommodate a part of the flexible display panel 5.

[0098] In some embodiments, the flexible display panel 5 bends around the support portion of the push rod 6, the push rod 6 is slidably mounted to the housing 7, and the push rod 6 is slidably moved relative to the housing 7. Optionally, the flexible display panel 5 is configured to be switched between the folded state and the unfolded state as the push rod 6 is slidably moved relative to the housing 7.

[0099] In some embodiments, referring to Figures 1 to 18, the display device further includes a first bonding structure 8 configured to fixedly mount the flexible display panel 5 to the housing 7. Optionally, the first bonding structure 8 is configured to form a sealed chamber between the flexible display panel 5 and the housing 7. Optionally, the flexible display panel 5 includes a pad bending region 5-1. Optionally, the first bonding structure 8 is configured to fixedly mount the pad bending region 5-1 of the flexible display panel 5 to the frame portion of the housing 7.

[0100] In some embodiments, the housing 7 further includes a second groove 7-4 configured to at least partially receive the first bonding structure 8. The first bonding structure 8 at least partially extends into the second groove 7-4 of the housing 7 and is mounted to the second groove 7-4.

[0101] In some embodiments, the push rod 6 is a comb-shaped push rod including a plurality of teeth 6-1. In some embodiments, the housing 7 includes a plurality of grooves 7-1 configured to receive the plurality of teeth 6-1 of the push rod 6. In some embodiments, when the push rod 6 slides relative to the housing 7, the outer shell 4 moves together with the push rod 6. Optionally, at least one of the plurality of teeth 6-1 of the push rod 6 includes a start-stop limit structure 6-2 configured to define the limit of the slidable movement of the push rod 6 relative to the housing 7.

[0102] In some embodiments, referring to Figures 1 to 18 , the display device further includes an outer shell 4 connected to the housing 7 and connected to the push rod 6. Optionally, the outer shell 4 wraps around a portion of the flexible display panel 5 that bends around the push rod 6. Optionally, when at least a portion of the first display area 1 is retracted, the outer shell 4 also wraps around that portion of the first display area 1. Optionally, the outer shell 4 also wraps around the side edge of the flexible display panel 5.

[0103] In some embodiments, the outer shell 4 includes a first protrusion 4-2, and the housing 7 includes a first groove 7-3. Optionally, the first protrusion 4-2 and the first groove 7-3 are configured to be interlocked with each other to mount the outer shell 4 to the housing 7. Optionally, the first groove 7-3 is a blind groove.

[0104] In some embodiments, referring to Figures 1 to 18 , the second cover plate 15 is configured to cover that portion of the first display area 1 when at least a portion of the first display area 1 is retracted. Optionally, the second cover plate 15 is mounted to the first cover plate 12.

[0105] In some embodiments, referring to Figures 1 to 18, the display device further includes a torsion spring 9 and a pin shaft 10. Optionally, the pin shaft 10 is configured to mount the torsion spring 9 to the housing. Optionally, the pin shaft 10 is movably mounted to the housing 7. The first part of the torsion spring 9 is mounted to the pin shaft 10, and the second part of the torsion spring 9 is connected to the flexible display panel 5, thereby providing a tensioning mechanism for the flexible display panel 5. Optionally, the torsion spring 9 and the pin shaft 10 are received in the second chamber c2. Optionally, the second cover plate 15 includes a second protrusion 15-2, and the housing 7 includes a third groove 7-4. The second protrusion 15-2 and the third groove 7-4 are configured to be interlocked with each other to fix the pin shaft 10. The pin shaft 10 passes through the torsion spring 9 to achieve the fixation of the torsion spring 9.

[0106] In some embodiments, referring to Figures 1 to 18 , the display device further includes a first opening 7-2 extending through a side surface of the housing 7, and a flexible printed circuit FPC connected to the flexible display panel 5 and connected to the main board 17 received in the first chamber c1. Optionally, the flexible printed circuit FPC extends through the first opening 7-2 into the first chamber c1 to be connected to the main board 17.

[0107] In some embodiments, referring to Figures 1 to 18 , the display device further includes an adapter board 16 and one or more health monitoring sensors. Optionally, the third chamber c3 is configured to receive the adapter board 16 and one or more health monitoring sensors.

[0108] For purposes of illustration and description, the foregoing description of embodiments of the present invention has been given. It is not exhaustive and is not intended to limit the present invention to the precise forms or exemplary embodiments disclosed. Thus, the foregoing description should be considered illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to explain the principles of the present invention and its best mode of practical application, so that those skilled in the art can understand the various embodiments of the present invention and the various modifications suitable for the particular use or implementation contemplated. The scope of the present invention is intended to be defined by the appended claims and their equivalents, where all terms are meant in their broadest reasonable sense unless otherwise stated. Thus, terms such as "the invention", "the present invention", etc. do not necessarily limit the scope of the claims to a particular embodiment, and the reference to exemplary embodiments of the present invention does not imply a limitation of the present invention and no such limitation should be inferred. The present invention is defined only by the spirit and scope of the appended claims. Additionally, these claims may refer to the use of "first", "second", etc. followed by a noun or element. These terms should be understood as nomenclature and should not be construed as limiting the number of elements modified by such nomenclature unless a specific number has been given. Any advantages and benefits described may not apply to all embodiments of the present invention. It should be understood that those skilled in the art can make changes to the described embodiments without departing from the scope of the present invention defined by the appended claims. Further, no element or component in this disclosure is intended to be dedicated to the public, whether or not the element or component is expressly recited in the appended claims.

Claims

1. A display device, comprising: A housing; A first cover plate; A second cover plate; A back plate; A first chamber, which is located between the housing and the first cover plate; A second chamber, which is located between the first cover plate and the second cover plate; and A third chamber, which is located between the second cover plate and the back plate; Wherein, the first chamber is a waterproof chamber; and The third chamber is a waterproof chamber; Wherein, the display device further comprises: A second opening extending through the first cover plate; and A third opening extending through the second cover plate; Wherein, the third opening connects the first chamber and the third chamber; and The third opening is at least partially located in the second opening.

2. The display device according to claim 1, wherein, The second cover plate includes a baffle and a main body, and the baffle protrudes away from the main body towards the first cover plate; And The baffle is in direct contact with the first cover plate, thereby closing the second chamber.

3. The display device according to claim 2, further comprising a groove extending into the second cover plate; Among them, The baffle separates the second chamber from the groove; A part of the first cover plate extends into the groove, thereby interlocking with the second cover plate; And The part of the first cover plate extending into the groove is at least partially in contact with a first sealing ring and at least partially in contact with a second sealing ring.

4. The display device according to any one of claims 1 to 3, wherein, The first cover plate includes a first tubular structure protruding towards the second cover plate, and the second opening is an opening of the first tubular structure; The second cover plate includes a second tubular structure protruding towards the first cover plate, and the third opening is an opening of the second tubular structure; and The second tubular structure is inserted into the first tubular structure.

5. The display device according to claim 4, further comprising a first sealing ring and a second sealing ring located between the inner wall of the first tubular structure and the outer wall of the second tubular structure, thereby preventing water from passing between the inner wall of the first tubular structure and the outer wall of the second tubular structure.

6. The display device according to claim 5, further comprising a water storage space located between the first sealing ring and the second sealing ring, which is configured to further prevent water from passing through the second sealing ring.

7. The display device according to any one of claims 1 to 6, further comprising: A main board, which is accommodated in the first chamber; An adapter board, which is accommodated in the third chamber; And An adapter flexible printed circuit, which is connected to the main board accommodated in the first chamber and connected to the adapter board accommodated in the third chamber; Wherein, the adapter flexible printed circuit extends from the first chamber, through the third opening, and into the third chamber.

8. The display device according to any one of claims 1 to 7, further comprising a second bonding structure, which is configured to fixedly mount the first cover plate to the housing, thereby forming the first chamber; Among them, The housing further includes a fourth groove configured to accommodate the second bonding structure.

9. The display device according to any one of claims 1 to 8 further includes a third bonding structure configured to fixedly mount the backplane to the second cover plate, thereby forming the third chamber; Among them, The second cover plate further includes a fifth groove configured to accommodate the third bonding structure.

10. The display device according to any one of claims 1 to 9 further includes: A flexible display panel configured to switch between a folded state and an unfolded state; And A push rod; Wherein, the push rod and the housing are jointly configured to switch the flexible display panel between the folded state and the unfolded state; and The second chamber is configured to accommodate a part of the flexible display panel.

11. The display device according to claim 10, wherein, The flexible display panel bends around the support portion of the push rod; The push rod is slidably mounted to the housing; The push rod is capable of sliding relative to the housing; And The flexible display panel is configured to switch between the folded state and the unfolded state as the push rod slides relative to the housing.

12. The display device according to claim 10, wherein The push rod is a comb-shaped push rod including a plurality of teeth; The housing includes a plurality of grooves configured to accommodate the plurality of teeth of the push rod; and At least one of the plurality of teeth of the push rod includes a start-stop limiting structure configured to define the limit of the slidable movement of the push rod relative to the housing.

13. The display device according to any one of claims 1 to 12 further includes a first bonding structure configured to mount the flexible display panel to the housing; and The first bonding structure is configured to form a sealed chamber between the flexible display panel and the housing.

14. The display device according to claim 13, wherein, The flexible display panel includes a pad bending region; and The first bonding structure is configured to fixedly mount the pad bending region of the flexible display panel to the frame portion of the housing.

15. The display device according to claim 13, wherein, The housing further includes a second groove configured to at least partially accommodate the first bonding structure; And The first bonding structure at least partially extends into the second groove of the housing and is mounted to the second groove.

16. The display device according to any one of claims 1 to 15 further includes: A push rod; And An outer shell mounted to the housing and mounted to the push rod; Wherein, the display device has a first display area and a second display area; and The first display area can be slid open to increase the total display area of the display device, or can be retracted to reduce the total display area of the display device; Wherein, the outer shell wraps the portion of the flexible display panel that bends around the support portion of the push rod; When at least a part of the first display area is retracted, the outer shell also wraps the part of the first display area; and The outer shell also wraps the side edge of the flexible display panel.

17. The display device according to claim 16, wherein, The outer shell includes a first protrusion; The housing includes a first groove; The first protrusion and the first groove are configured to be interlocked with each other, thereby mounting the outer shell to the housing; And The first groove is a blind groove.

18. The display device according to any one of claims 1 to 17 further comprises: A torsion spring; And A pin shaft; Wherein, the pin shaft is configured to mount the torsion spring to the housing; The pin shaft is movably mounted to the housing; A first portion of the torsion spring is mounted to the pin shaft, and a second portion of the torsion spring is mounted to the flexible display panel, thereby providing a tensioning mechanism for the flexible display panel; and The torsion spring and the pin shaft are received in the second chamber.

19. The display device according to claim 18, wherein, The second cover plate includes a second protrusion; The housing includes a third groove; The second protrusion and the third groove are configured to be interlocked with each other to fix the pin shaft; and The pin shaft passes through the torsion spring, thereby realizing the fixation of the torsion spring.

20. The display device according to any one of claims 1 to 19 further comprises: A main board, which is received in the first chamber; A first opening, which extends through the side surface of the housing; And A flexible printed circuit, which is connected to the flexible display panel and connected to the main board; Wherein, the flexible printed circuit extends through the first opening into the first chamber to be connected to the main board.

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