WO2024045559A1 - 显示装置及其折叠显示模组 - Google Patents
显示装置及其折叠显示模组 Download PDFInfo
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- WO2024045559A1 WO2024045559A1 PCT/CN2023/081883 CN2023081883W WO2024045559A1 WO 2024045559 A1 WO2024045559 A1 WO 2024045559A1 CN 2023081883 W CN2023081883 W CN 2023081883W WO 2024045559 A1 WO2024045559 A1 WO 2024045559A1
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- WO
- WIPO (PCT)
- Prior art keywords
- frame
- support plate
- display device
- hinge
- transmission mechanism
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims abstract description 108
- 230000007246 mechanism Effects 0.000 claims abstract description 85
- 230000036316 preload Effects 0.000 claims description 22
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000005452 bending Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- -1 foreign matter Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
Definitions
- the present application relates to the field of display, and specifically to a display device and a folding display module thereof.
- Foldable electronic devices combine the portability of ordinary electronic devices with the ultimate experience of large-screen display after unfolding. Therefore, foldable electronic devices have gradually become an important trend in the development of mobile terminals and have become an important area of competition for major terminal manufacturers.
- the present application provides a display device and a folding display module thereof to improve the technical problem that the display screen is prone to creases after repeated folding for many times.
- the present application provides a display device, wherein the display device includes:
- a hinge transmission mechanism is located at the joint between the first frame and the second frame, and is rotatably connected to the first frame and the second frame respectively.
- the first frame and the second frame When the second frame rotates relative to the hinge transmission mechanism, the rotation axis is along the first direction;
- a first support plate is slidably connected to the second frame.
- the first support plate can reciprocate relative to the second frame in a second direction.
- the second direction is determined by the first support plate approaching the second frame.
- One end of the hinge transmission mechanism points to an end of the first support plate away from the hinge transmission mechanism, and the second direction is perpendicular to the first direction;
- a flexible display screen with one end fixed to the first frame and the other end fixed to the side of the first support plate facing away from the second frame;
- a first preloading mechanism is provided on the second frame and applies a first preloading force to the first support plate.
- the direction of the first preloading force is the same as the second direction.
- This application also provides a display device, which includes:
- a hinge transmission mechanism is provided at the joint between the first frame and the second frame, and is rotatably connected to the first frame and the second frame respectively.
- the first frame and the second frame are When the second frame rotates relative to the hinge transmission mechanism, the rotation axis is along the first direction;
- a first support plate is slidably connected to the second frame.
- the first support plate can reciprocate relative to the second frame in a second direction.
- the second direction is determined by the first support plate approaching the second frame.
- One end of the hinge transmission mechanism points to an end of the first support plate away from the hinge transmission mechanism, and the second direction is perpendicular to the first direction;
- a second support plate is slidably connected to the first frame, and the second support plate can reciprocate relative to the first frame along the second direction;
- a flexible display screen with one end fixed to the side of the second support plate facing away from the second frame, and the other end fixed to the side of the first support plate facing away from the second frame;
- a first preloading mechanism is provided on the second frame and applies a first preloading force to the first support plate, and the direction of the first preloading force is the same as the second direction;
- a second preloading mechanism is provided on the first frame and applies a second preloading force to the second support plate.
- the direction of the second preloading force is opposite to the second direction.
- This application also provides a folding display module, which is used to combine with the first frame and the second frame butted with each other to form a display device.
- the folding display module includes:
- a hinge transmission mechanism is provided at the joint between the first frame and the second frame, and is rotatably connected to the first frame and the second frame respectively.
- the first frame and the second frame are When the second frame rotates relative to the hinge transmission mechanism, the rotation axis is along the first direction;
- a first support plate is slidably connected to the second frame.
- the first support plate can reciprocate relative to the second frame in a second direction.
- the second direction is determined by the first support plate approaching the second frame.
- One end of the hinge transmission mechanism points to an end of the first support plate away from the hinge transmission mechanism, and the second direction is perpendicular to the first direction;
- a flexible display screen with one end fixed to the first frame and the other end fixed to the side of the first support plate facing away from the second frame;
- a first preloading mechanism is provided on the second frame and applies a first preloading force to the first support plate.
- the direction of the first preloading force is the same as the second direction.
- the cooperation between the first frame, the second frame and the hinge transmission mechanism is used to realize the display device in the folded state and the unfolded state.
- FIG. 1 is a schematic three-dimensional structural diagram of a display device in a flat state according to an embodiment of the present application.
- FIG. 2 is a schematic three-dimensional structural diagram of the display device shown in FIG. 1 in a folded state.
- FIG. 3 is a schematic cross-sectional structural diagram of the display device shown in FIG. 2 along X-X.
- FIG. 4 is an exploded schematic diagram of the display device shown in FIG. 1 .
- FIG. 5 is a schematic three-dimensional structural diagram of the folding display module of the display device shown in FIG. 1 .
- Figure 6 is a schematic three-dimensional structural diagram from another angle of the folded display module shown in Figure 5 after hiding the flexible display screen.
- FIG. 7 is a schematic diagram of the assembly of the structure shown in FIG. 6 with the first frame and the second frame.
- FIG. 8 is a schematic three-dimensional structural diagram of the structure shown in FIG. 6 in a half-folded state.
- Figure 9 is a schematic three-dimensional structural diagram of the structure shown in Figure 6 in a folded state.
- FIG. 10 is an exploded schematic diagram of the structure shown in FIG. 6 .
- FIG. 11 is an exploded schematic view of part of the structure of the hinge transmission mechanism shown in FIG. 10 from another angle.
- FIG. 12 is an exploded schematic view of the gear transmission unit of the hinge transmission mechanism shown in FIG. 11 .
- Figure 13 is an exploded schematic view of the second frame, the first pretensioning mechanism and the first support plate shown in Figure 4 from another angle.
- FIG. 14 is a schematic assembly diagram of the first pretensioning mechanism and the first support plate shown in FIG. 13 .
- Fig. 15 is a schematic assembly diagram of the first pretensioning mechanism and the second frame shown in Fig. 13.
- FIG. 16 is an exploded schematic view of the structure shown in FIG. 15 .
- Flexible display screen 10 First frame 20, second frame 30, hinge transmission mechanism 40, first support plate 50, first pre-tensioning mechanism 60, front frame 70, slider 80, screws 90;
- Connection unit 11 gear transmission unit 12, base 13, cover plate 14, floating plate 15, slider 16, spring 61, push button 62;
- the display device 100 includes a flattened state (shown in Figure 1) and a folded state (shown in Figure 2).
- the display device 100 at least includes a flexible display screen 10 , a first frame 20 , a second frame 30 , a hinge transmission mechanism 40 , a first support plate 50 and a first pretensioning mechanism 60 .
- the first frame 20 and the second frame 30 are disposed butt jointly.
- the flexible display screen 10 is provided on the first frame 20 and the second frame 30 .
- the hinge transmission mechanism 40 is provided at the joint between the first frame 20 and the second frame 30 , and is rotatably connected to the first frame 20 and the second frame 30 respectively.
- the first support plate 50 is slidingly connected to the second frame 30 .
- the first preloading mechanism 60 is disposed on the second frame 30 and applies a first preloading force to the first support plate 50.
- the first support plate 50 is in the first preload state.
- the flexible display screen 10 is flattened under the action of force.
- the first frame 20 and the second frame 30 can rotate relative to the hinge transmission mechanism 40 to switch the display device 100 between a flat state and a folded state.
- the rotation axis when the first frame 20 and the second frame 30 rotate relative to the hinge transmission mechanism 40 extends along the first direction
- the first support plate 50 can rotate relative to the first support plate 50 .
- the direction of the reciprocating movement of the second frame 30 is a second direction, and the second direction is from one end of the first support plate 50 close to the hinge transmission mechanism 40 to the first support plate 50 away from the hinge transmission mechanism 40 one end of the first preload, and the second direction is perpendicular to the first direction, and the direction of the first preload force is the same as the second direction.
- This application uses the cooperation between the first frame 20 , the second frame 30 and the hinge transmission mechanism 40 to realize the switching between the folded state and the unfolded state of the display device 100 , and at the same time utilizes the
- the first support plate 50 and the first pre-tensioning mechanism 60 are structurally designed to apply a first pre-tension force to the flexible display screen 10 to ensure that the flexible display screen 10 maintains a certain pre-tension force at all times, so that the flexible display screen 10 maintains a certain pre-tension force.
- the folding portion of the display screen 10 is less likely to have creases.
- the hinge transmission mechanism 40, the first support plate 50, the first pretensioning mechanism 60 and the flexible display screen 10 are first assembled to form a folding display module, as shown in Figure As shown in 5, the folding display module is then assembled into the first frame 20 and the second frame 30.
- This assembly method can reduce the risk of screen failure caused by excessive assembly errors between the flexible display screen 10 and the hinge transmission mechanism 40 , resulting in mismatching of bending trajectories, and at the same time, it can improve the assembly convenience and ease of assembly of the entire display device. Yield. It can be understood that in other embodiments, the assembly sequence of the display device 100 can also be selected according to actual conditions during assembly.
- the flexible display screen 10 is a flexible folding screen body, which can be, but is not limited to, a conventional flexible display screen, a flexible touch display screen, and other flexible display bodies with corresponding functions.
- the first frame 20 and the second frame 30 are both middle frame structures of the display device 100 .
- the flexible display screen 10 can be attached to the first support plate 50 and the second frame 30 through easy-pull glue or mesh glue.
- the first frame 20 and the second frame 30 when the display device 100 is in a flat state, the first frame 20 and the second frame 30 may abut each other, and the hinge transmission mechanism 40 may be accommodated in the In the first frame 20 and the second frame 30; when the display device 100 is in the folded state, the first frame 20 and the second frame 30 can be separated from each other, and the hinge transmission mechanism 40 can be exposed at least partially. It can be understood that in other embodiments, when the display device 100 is in a flat state, the first frame 20 and the second frame 30 can also abut two sides of the hinge transmission mechanism 40 respectively. side; when the display device 100 is in the folded state, the portion of the hinge transmission mechanism 40 used to connect the first frame 20 and the second frame 30 is exposed.
- the first frame 20 and the second frame 30 are closed and close in a parallel state, and there is basically no gap between them after closing, which can prevent external dust, foreign matter, particles, etc. Enter, thus playing the role and effect of protecting the screen body.
- the display device 100 also includes a front camera (not shown). The front camera Installed on the first frame 20.
- the display device 100 may also include a second support plate and a second pretensioning mechanism.
- the second support plate can be slidably installed on the On the first frame 20, the opposite ends of the flexible display screen 10 are respectively fixed on the first support plate 50 and the second support plate, and the second pretensioning mechanism is provided on the first support plate 50. on the frame 20, and applies a second preload force to the second support plate, the direction of the second preload force is opposite to the second direction.
- the second support plate may have the same structure as the first support plate, and the second pretensioning mechanism may have the same structure as the first pretensioning mechanism.
- the display device 100 further includes two front frames 70 , as shown in FIG. 4 .
- Two front frames 70 are fixed on the first frame 20 and the second frame 30 respectively, and are disposed on the side of the flexible display screen 10 facing away from the first frame 20 and the second frame 30 .
- One side is used to press the periphery of the flexible display screen 10 to the first frame 20 and the second frame 30 and protect the periphery of the flexible display screen 10 from external dust and foreign matter. , sand, etc. damage the screen body.
- the hinge transmission mechanism 40 includes a transmission component 401 and a hinge component 402 .
- the transmission assembly 401 is disposed at the joint between the first frame 20 and the second frame 30 and is rotationally connected to the first frame 20 and the second frame 30 .
- the hinge component 402 is hingedly connected to the transmission component 401 and is slidably disposed in the first frame 20 and the second frame 30 .
- the hinge transmission mechanism 40 may also only include the transmission assembly 401. That is, in some embodiments, the hinge transmission mechanism 40 only needs to provide the transmission assembly 401 to achieve the desired function.
- the display device 100 can be switched between the folded state and the unfolded state.
- the transmission assembly 401 adopts a synchronous transmission assembly to achieve joint rotation of the first frame 20 and the second frame 30 . It is understandable that in other implementations, the transmission assembly 401 may also adopt other transmission structures according to actual conditions and requirements, as long as the display device 100 can be switched between the folded state and the unfolded state.
- the transmission assembly 401 adopts a synchronous transmission assembly, which at least includes a base 13 , two sets of gear transmission units 12 and two sets of connection units 11 .
- the base 13 is provided at the joint between the first frame 20 and the second frame 30 .
- Two sets of gear transmission units 12 are received in the base 13 and are respectively located near both ends of the base 13 .
- Two sets of connection units 11 are respectively provided at opposite ends of the base 13 for rotationally connecting the transmission assembly 401 with the first frame 20 and the second frame 30 .
- each group of the gear transmission units 12 includes a mounting base 121 , two transmission gears 122 and two linkage gears 123 .
- the mounting base 121 is fixed in the base 13 .
- the rotating shafts of the two transmission gears 122 and the two linkage gears 123 are rotatably installed in the mounting base 121 .
- the two linkage gears 123 They mesh with each other and rotate in opposite directions, and each linkage gear 123 meshes with a corresponding transmission gear 122 and both of them rotate in opposite directions.
- the mounting base 121 includes a first part 1211 and a second part 1212, and the first part 1211 and the second part 1212 are detachably fixed in the base 13.
- the first part 1211 is provided with four first mounting holes 12110
- the second part 1212 is provided with four second mounting holes 12120 corresponding to the first mounting holes 12110 .
- the two ends of the rotating shafts of the two transmission gears 122 and the two linkage gears 123 are respectively installed in the first mounting hole 12110 and the second mounting hole 12120, so as to connect the two transmission gears 122 and the linkage gears 123 respectively.
- the gear 122 and the gear parts of the two linkage gears 123 are accommodated between the first part 121 and the second part 122 .
- each set of the connection units 11 includes a first connection part 111 and a second connection part 112 , and the first connection part 111 and the second connection part 112 are respectively connected with the two transmission gears 122 .
- the rotating shaft is connected to prevent rotation, the first connecting piece 111 is fixedly connected to the first frame 20 , and the second connecting piece 112 is fixedly connected to the second frame 30 .
- the first frame 20 , the first connecting member 111 and one of the transmission gears corresponding to the first connecting member 111 122 move synchronously
- the second frame 30 , the second connecting member 112 and one of the transmission gears 122 corresponding to the first connecting member 111 move synchronously.
- the two linkage gears 123 mesh with each other and rotate in opposite directions, when the first frame 20 and/or the second frame 30 rotate relative to the base 13 under the action of external force, At this time, the transmission on both sides is linked under the action of the two linkage gears 123, which effectively improves the stability of the rotation of the display device 100 when switching states.
- the transmission assembly 401 further includes a cover 14 , which is fixed to the side of the base 13 facing the flexible display 10 , and covers the two sets of the flexible display screen 10 .
- the gear transmission unit 12 is used to close the cavity on the base 13 for receiving the gear transmission unit 12. While protecting the gear transmission unit 12, it can effectively prevent dust and other debris from entering. inside the base 13.
- the surface of the cover 14 facing away from the base 13 is flat to support the middle part (that is, the bent part) of the flexible display screen 10 in the flat state. This has never been avoided. Collapse of the flexible display screen 10 .
- the hinge assembly 402 includes two floating plates 15 and two sets of sliding parts 16.
- the two floating plates 15 are hinged to opposite sides of the transmission assembly 401 respectively.
- the two sets of sliding parts 16 16 are respectively hinged with the corresponding floating plates 15 and are slidably disposed on the first frame 20 and the second frame 30 respectively. It should be noted that “hinged” here means that the two hinged parts can rotate relative to each other at a certain angle.
- each floating plate 15 is respectively hinged with opposite sides of the base 13 .
- Each floating plate 15 includes a body part 151 and first hinge parts 152 provided on both sides of the body part 151 .
- the body part 151 is a flat plate, and the first hinge part 152 is hinged with the base 13 and the sliding member 16 through pins (not shown).
- each floating plate 15 can rotate around the hinge point with the base 13 and the hinge point with the slider 16 respectively to achieve its own flattening and avoidance actions.
- the body portion 151 of each floating plate 15 is flush with the cover plate 14 and resists each other to jointly support the flexible display screen 10 and lift the flexible display screen 10 .
- each floating plate 15 is in contact with the The first frame 20 and the second frame 30 are parallel. In the folded state, the two floating plates 15 and the cover plate 14 form a triangular space to accommodate the bent portion of the flexible display screen 10 .
- the two floating plates 15 include or are respectively a first floating plate 1501 and a second floating plate 1502.
- each sliding member 16 includes a sliding part 161 and a second hinge part 162 connected with the sliding part 161 .
- the second hinge part 162 and the corresponding first hinge part 152 are hinged through pins, and the sliding part 161 is slidably provided on the corresponding first frame 20 or the second frame 30 .
- the first frame 20 and the second frame 30 are provided with the same number of sliding grooves as the sliding parts 16 , and the sliding parts 161 slide and are received in the corresponding sliding grooves.
- a guide plate 163 is fixed in each sliding groove.
- the guide plate 163 is provided with a slideway extending along the second direction.
- the sliding portion 161 is slidably provided on the guide plate. on the plate 163, and can reciprocate along the slideway relative to the guide plate 163.
- the guide plate 163 can also be omitted, and the sliding portion can also be provided in the sliding groove, as long as the sliding portion 161 and the corresponding first frame 20 or the corresponding sliding groove can be satisfied.
- the sliding connection of the second frame 30 is sufficient.
- the sliding member 16 connected to the first frame 20 is a first sliding member 1601, and the sliding member 16 connected to the second frame 30 is a third sliding member 1601.
- Two sliding parts 1602; the floating plate 15 connected to the first sliding part 1601 is the first floating plate 1501, and the floating plate 15 connected to the second sliding part 1602 is the second floating plate 1502, which is located on the second sliding part 1602.
- the sliding groove on a frame 20 is a first sliding groove (not shown), and the sliding groove provided on the second frame 30 is a second sliding groove 301 .
- the number of the first sliding members 1601 is the same as the number of the second sliding members 1602 .
- the number of sliders 16 in each group of sliders 16 is two, that is, the display device 100 includes two first sliders 1601 and two second sliders 1602 .
- the two first sliding members 1601 are spaced apart, and the two second sliding members 1602 are spaced apart.
- two first sliding members 1601 are evenly distributed along the first direction on the first floating plate 1501 to improve the rotational stability of the first floating plate 1501;
- the sliding members 1602 are evenly distributed on the first floating plate 1501 along the first direction to improve the rotational stability of the second floating plate 1502 .
- the first support plate 50 has a flat plate structure. In the flattened state, the first support plate 50 is flush with the cover plate 14. , to jointly support the flexible display screen 10; in the folded state, the first support plate 50 is disposed perpendicular to the cover plate 14 to support the non-bent portion of the flexible display screen 10.
- the first support plate 50 is slidably connected to the second frame 30 through at least one slider 80 .
- the slider 80 is fixed to the side of the first support plate 50 facing the second frame 30.
- the second frame 30 is provided with at least one slide groove 302, and the slider 80 can slide. be accommodated in the chute 302.
- the number of the slide blocks 80 and the slide grooves 302 is two.
- the two slide blocks 80 are fixed on the first support plate 50 through screws 90, and the two slide grooves 302 are evenly distributed along the first direction on the second frame 30 to lift the The sliding stability of the first support plate 50.
- lugs 501 are respectively provided on opposite sides of the first support plate 50 , and two corresponding slots 303 are provided on the second frame 30 .
- the lugs 501 are correspondingly received in the The lug 501 can reciprocate in the corresponding slot 303 along the second direction.
- the force source of the first preload force in the first preload mechanism 60 is an elastic object, and the first preload force is an elastic force.
- the first preload force is an elastic force.
- This floatability can enable the first preload force to make corresponding "self-adjustment" according to the positional relationship between the relevant structure (such as the first support plate 50 and the hinge transmission mechanism 40 ) and the force source. , to avoid collision or pulling on related structures and extend the life of the device.
- the force source of the first pretension force in the first pretension mechanism 60 may not be limited to elastic objects, and the selection of the force source may be adjusted according to the actual situation.
- the force source can also be an ordinary elastic object or a conventional transmission part, as long as the force source meets its ability. It is sufficient to apply two fixing forces to the first support plate 50 in two different states.
- the first preloading mechanism 60 includes at least one set of spring assemblies, and each set of spring assemblies includes a spring 61 and a push pin 62 .
- the push button 62 is installed on the first support plate 50 .
- the spring 61 is sleeved on the push button 62 and is compressed and received in the second frame 30 . That is, in some preferred embodiments, the force source of the first preload force in the first preload mechanism 60 is a spring 61 , and the first preload force is the elastic force generated by the elastic deformation of the spring 61 . It can be understood that in some other preferred embodiments, the source of the first preload force in the first preload mechanism 60 may also be other elastic objects, such as coil springs.
- the first support plate 50 is provided with a guide groove 502 , and the push button 62 is inserted into the guide groove 502 .
- the length of the guide groove 502 is slightly larger than the diameter of the pusher 62 so that the pusher 62 can reciprocate slightly in the guide groove 502 along the second direction to lift the third pusher.
- a support plate 50 moves in a floating manner.
- the second frame 30 is provided with at least one receiving groove 304, and the spring 61 is compressed and received in the corresponding receiving groove 304.
- one end of the spring 61 resists the push button 62
- the other end of the spring 61 resists the inner end surface of one end of the receiving groove 304 close to the base 13 , so that the spring 61 presses against the base 13 .
- the direction of the first preload force exerted by the first support plate 50 is the second direction. It is understandable that the first frame 20 and the second frame 30 are not directly rotationally connected, but are rotationally connected through the hinge transmission mechanisms 40 respectively, thereby realizing the rotation between the two.
- the bending part of the flexible display screen 10 will undoubtedly be used in the hinge transmission mechanism 40 to connect the first frame 20 and the second frame 30
- the corresponding parts form a folded shape similar to a "water drop".
- the “water drop” folded shape here makes the straight-line distance (along the second direction) from the end of the flexible display screen 10 to the bending center in the folded state smaller than that of the flexible display screen 10 in the unfolded state.
- the straight-line distance from the end to the bending center (along the second direction) therefore during the switching process of the display device 100 between the folded state and the unfolded state, the magnitude of the first pre-tightening force can be Changes in size as the state changes. Specifically, in the unfolded state, the value of the first pre-tightening force is the largest, and in the folded state, the value of the first pre-tightening force is the smallest.
- the first preloading mechanism 60 includes two sets of spring assemblies, and the two sets of spring assemblies are symmetrically disposed near the edges of the first support plate 50 on opposite sides to enhance the first support. The balance of the plate 50 under the first preload force.
- the side of the first support plate 50 close to the base 13 resists the floating plate 15; when the display device 100 is in the folded state, The side of the first support plate 50 close to the base 13 is spaced apart from the floating plate 15 . In this way, the pre-tightening force on the first support plate 50 can be further increased in the unfolded state, and the tension of the flexible display screen 10 can be increased. It can be understood that in some embodiments, during the switching process of the display device 100 between the folded state and the unfolded state, the side of the first support plate 50 close to the base 13 may always be in contact with the base 13 . The floating plate 15 resists; in some embodiments, during the switching process of the display device 100 between the folded state and the unfolded state, the side of the first support plate 50 close to the base 13 can also be Always spaced apart from the floating plate 15.
- the display device 100 in this embodiment is a preferred solution.
- the display device 100 switches between the folded state and the flattened state, the movement of each structure and The connection relationship is described below.
- the first frame 20 and the second frame 30 can abut each other, and the hinge transmission mechanism 40 can be accommodated in the first frame 20 and the second frame 30 .
- the flexible display screen 10 is supported on the first support plate 50 , the floating plate 15 and the cover plate 14 in a flat form.
- the compression amount of the spring 61 is maximum, and the first The preload is at its maximum value.
- the first frame 20 and the second frame 30 rotate and move toward each other relative to the base 13 under the action of external force until the first The frame 20 and the second frame 30 are closed and close together in a parallel state.
- the first frame 20 and the second frame 30 respectively drive the two transmission gears 122 to rotate, and the two transmission gears 122 respectively drive the two linkage gears 123 to rotate.
- the two linkage gears 123 meshing realizes the synchronization and stability of the rotation of the first frame 20 and the second frame 30;
- the first frame 20 and the second frame 30 respectively drive the two ends of the flexible display screen 10 to move toward each other, and the two floating plates 15 rotate relative to the cover plate 14 respectively.
- the sliding member 1601 moves in the direction opposite to the second direction relative to the first frame 20, and the second sliding member 1602 moves in the second direction relative to the second frame 30.
- the two The floating plate 15 drives the middle part of the flexible display screen 10 to gradually bend into a "water drop".
- the flexible display screen 10 The bent part of the "water drop" is accommodated in the triangular space; at the same time, as the middle part of the flexible display screen 10 is gradually bent, the straight-line distance from the end of the flexible display screen 10 to the center position (along the second direction) gradually decreases, the compression amount of the spring 61 gradually decreases, the spring 61 drives the first support plate 50 to gradually move in the second direction relative to the first frame 20, the The first preload force gradually decreases and reaches a minimum value when folding is completed.
- the first frame 20 and the second frame 30 are closed and close together in a parallel state, and the two floating plates 15 and the cover plate 14 form a triangle.
- Space, the "water drop" bending part of the flexible display screen 10 is accommodated in this triangular space, the compression amount of the spring 61 is the smallest, and the first preload force is at the minimum value.
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Abstract
一种显示装置（100）及其折叠显示模组，显示装置（100）包括对接的第一框体（20）和第二框体（30）；铰链传动机构（40）；第一支撑板（50），与第二框体（30）滑动连接且能够相对第二框体（30）沿第二方向往复运动，第二方向由第一支撑板（50）靠近铰链传动机构（40）的一端指向第一支撑板（50）远离铰链传动机构（40）的一端；柔性显示屏（10），一端固定贴合于第一支撑板（50）上；第一预紧机构（60），设于第二框体（30）上且向第一支撑板（50）施加第一预紧力，第一预紧力的方向与第二方向相同。
Description
本申请涉及显示领域，具体涉及一种显示装置及其折叠显示模组。
折叠式电子设备兼具了普通电子设备便携性和展开后大屏显示的极致体验，因此，折叠式电子设备已逐渐成为移动终端发展的重要趋势，已经成为各大终端厂商竞争的重要领域。
然而，现阶段折叠显示装置经过多次反复折叠后，由于显示屏的弯折区部位的膜层材料和胶层材料发生了疲劳塑性变形等原因，导致现有的折叠显示装置在弯折处易出现折痕问题。
本申请提供了一种显示装置及其折叠显示模组，用以改善显示屏在多次反复折叠后易产生折痕的技术问题。
本申请一种显示装置，其中，所述显示装置包括：
第一框体；
第二框体，与所述第一框体对接；
铰链传动机构，设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体分别转动连接，所述第一框体和所述第二框体相对所述铰链传动机构转动时的转动轴沿第一方向；
第一支撑板，与所述第二框体滑动连接，所述第一支撑板能够相对所述第二框体沿第二方向往复运动，所述第二方向由所述第一支撑板靠近所述铰链传动机构的一端指向所述第一支撑板远离所述铰链传动机构的一端，且所述第二方向垂直所述第一方向；
柔性显示屏，一端固定于所述第一框体上，另一端固定贴合于所述第一支撑板背向所述第二框体的一侧；以及
第一预紧机构，设于所述第二框体上，且向所述第一支撑板施加一个第一预紧力，所述第一预紧力的方向与所述第二方向相同。
本申请还提供一种显示装置，所述显示装置包括：
第一框体；
第二框体，与所述第一框体对接；
铰链传动机构，设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体分别转动连接，所述第一框体和所述第二框体相对所述铰链传动机构转动时的转动轴沿第一方向；
第一支撑板，与所述第二框体滑动连接，所述第一支撑板能够相对所述第二框体沿第二方向往复运动，所述第二方向由所述第一支撑板靠近所述铰链传动机构的一端指向所述第一支撑板远离所述铰链传动机构的一端，且所述第二方向垂直所述第一方向；
第二支撑板，与所述第一框体滑动连接，所述第二支撑板能够相对所述第一框体沿所述第二方向往复运动；
柔性显示屏，一端固定于所述第二支撑板背向所述第二框体的一侧，另一端固定贴合于所述第一支撑板背向所述第二框体的一侧；
第一预紧机构，设于所述第二框体上，且向所述第一支撑板施加一个第一预紧力，所述第一预紧力的方向与所述第二方向相同；以及
第二预紧机构，设于所述第一框体上，且向所述第二支撑板施加一个第二预紧力，所述第二预紧力的方向与所述第二方向相反。
本申请还提供一种折叠显示模组，用以与相互对接的第一框体和第二框体组合以组成显示装置，所述折叠显示模组包括：
铰链传动机构，设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体分别转动连接，所述第一框体和所述第二框体相对所述铰链传动机构转动时的转动轴沿第一方向；
第一支撑板，与所述第二框体滑动连接，所述第一支撑板能够相对所述第二框体沿第二方向往复运动，所述第二方向由所述第一支撑板靠近所述铰链传动机构的一端指向所述第一支撑板远离所述铰链传动机构的一端，且所述第二方向垂直所述第一方向；
柔性显示屏，一端固定于所述第一框体上，另一端固定贴合于所述第一支撑板背向所述第二框体的一侧；以及
第一预紧机构，设于所述第二框体上，且向所述第一支撑板施加一个第一预紧力，所述第一预紧力的方向与所述第二方向相同。
在本申请提供的显示装置及其折叠显示模组中，利用所述第一框体、所述第二框体和所述铰链传动机构之间的配合实现所述显示装置在折叠状态和展开状态之间的切换，同时利用所述第一支撑板和所述第一预紧机构结构设计对所述柔性显示屏施加预紧力，以此保证所述柔性显示屏时刻保持一定的预张力，使得所述柔性显示屏在伴随所述显示装置在折叠状态和展开状态进行切换时，其折叠处不易产生折痕。
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的显示装置在展平状态下的立体结构示意图。
图2为图1所示显示装置在折叠状态下的立体结构示意图。
图3为图2所示显示装置沿X-X的剖面结构示意图。
图4为图1所示显示装置的分解示意图。
图5为图1所示显示装置的折叠显示模组的立体结构示意图。
图6为图5中所示折叠显示模组隐藏柔性显示屏后在另一角度下的立体结构示意图。
图7为图6所示结构与第一框体和第二框体的装配示意图。
图8为图6所示结构的在半折叠状态下的立体结构示意图。
图9为图6所示结构的在折叠状态下的立体结构示意图。
图10为图6中所示结构的分解示意图。
图11为图10中所示铰链传动机构的部分结构在另一角度下的分解示意图。
图12为图11中所示铰链传动机构的齿轮传动单元的分解示意图。
图13为图4中所示第二框体、第一预紧机构和第一支撑板在另一角度下的分解示意图。
图14为图13中所示第一预紧机构和第一支撑板的装配示意图。
图15为图13中所示第一预紧机构和第二框体的装配示意图。
图16为图15中所示结构的分解示意图。
附图标记说明：
显示装置100；
柔性显示屏10、第一框体20、第二框体30、铰链传动机构40、第一支撑板50、第一预紧机构60、前框70、滑块80、螺钉90；
第二滑动槽301、滑槽302、卡槽303、收容槽304、凸耳501、导槽502、传动组件401、铰链组件402；
连接单元11、齿轮传动单元12、基座13、盖板14、浮动板15、滑动件16、弹簧61、推销62；
第一连接件111、第二连接件112、安装座121、传动齿轮122、联动齿轮123、本体部151、第一铰接部152、滑动部161、第二铰接部162、导向板163；
第一部分1211、第一安装孔12110、第二部分1212、第二安装孔12120、第一浮动板1501、第二浮动板1502、第一滑动件1601、第二滑动件1602。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的。
请参阅图1至图4，本申请提供一种显示装置100，所述显示装置100包括展平状态（如图1所示）和折叠状态（如图2所示）。所述显示装置100至少包括柔性显示屏10、第一框体20、第二框体30、铰链传动机构40、第一支撑板50和第一预紧机构60。所述第一框体20和所述第二框体30对接设置。所述柔性显示屏10设于所述第一框体20和所述第二框体30上。所述铰链传动机构40设于所述第一框体20和所述第二框体30的对接处，且与所述第一框体20和所述第二框体30分别转动连接。所述第一支撑板50与所述第二框体30滑动连接。所述柔性显示屏10的一端固定于所述第一框体20上，所述柔性显示屏10的另一端固定贴合于所述第一支撑板50背向所述第二框体30的一侧。所述第一预紧机构60设于所述第二框体30上，且向所述第一支撑板50施加一个第一预紧力，所述第一支撑板50在所述第一预紧力的作用下拉平所述柔性显示屏10。
具体地，所述第一框体20和所述第二框体30能够相对所述铰链传动机构40转动以使所述显示装置100在展平状态折叠状态之间切换。为方便说明，定义所述第一框体20和所述第二框体30相对所述铰链传动机构40转动时的转动轴沿第一方向延伸，所述第一支撑板50能够相对所述第二框体30往复运动的方向为第二方向，所述第二方向由所述第一支撑板50靠近所述铰链传动机构40的一端指向所述第一支撑板50远离所述铰链传动机构40的一端，且所述第二方向垂直所述第一方向，所述第一预紧力的方向与所述第二方向相同。
本申请利用所述第一框体20、所述第二框体30和所述铰链传动机构40之间的配合实现所述显示装置100在折叠状态和展开状态之间的切换，同时利用所述第一支撑板50和所述第一预紧机构60结构设计对所述柔性显示屏10施加第一预紧力，以此保证所述柔性显示屏10时刻保持一定的预张力，使得所述柔性显示屏10在伴随所述显示装置100在折叠状态和展开状态进行切换时，其折叠处不易产生折痕。
优选地，在进行结构装配时，先将所述铰链传动机构40、所述第一支撑板50、第一预紧机构60和所述柔性显示屏10进行整装形成折叠显示模组，如图5所示，然后将该折叠显示模组组装至第一框体20和第二框体30中。此种装配方式可以降低所述柔性显示屏10与所述铰链传动机构40之间装配误差过大导致弯折轨迹不匹配从而引发屏幕失效的风险，同时可以提升整个显示装置的装配便利性和组装良率。可以理解地，在其它实施方式中，所述显示装置100在组装时也可根据实际情况进行组装顺序的选择。
下面对所述显示装置100的各部分结构、各部分结构之间的相互连接和作动关系进行详细说明。
所述柔性显示屏10为柔性折叠屏体，其可以但不限于常规柔性显示屏、柔性触摸显示屏等各种具备相应功能的柔性显示体。所述第一框体20和所述第二框体30均为所述显示装置100的中框结构。
在一些实施例中，所述柔性显示屏10可通过易拉胶或网格胶贴合于所述第一支撑板50和所述第二框体30上。
在一些实施例中，当所述显示装置100处于展平状态时，所述第一框体20和所述第二框体30可以相互抵接，所述铰链传动机构40可以容设在所述第一框体20和所述第二框体30中；当所述显示装置100处于折叠状态时，所述第一框体20和所述第二框体30可以相互分离，所述铰链传动机构40可以外露至少部分。可以理解地，在其它实施例中，当所述显示装置100处于展平状态时，所述第一框体20和所述第二框体30也可以分别抵接所述铰链传动机构40的两侧；当所述显示装置100处于折叠状态时，所述铰链传动机构40中用以连接所述第一框体20和所述第二框体30的部分外露。优选地，在折叠状态下，所述第一框体20和所述第二框体30呈平行状态闭合贴近，且闭合后两者之间基本无缝隙，如此可防止外界灰尘及异物、颗粒物等进入，从而起到保护屏体的作用与效果。
在一些实施例中，除上述结构之外，中框结构上还可以安装其它结构，如在本实施例中，所述显示装置100还包括前置摄像头（图未示），所述前置摄像头安装于所述第一框体20上。
可以理解地，其它实施方式中，若无前置摄像头或前置摄像头有其它安装方式，所述显示装置100还可以包括第二支撑板和第二预紧机构，第二支撑板可滑动安装于所述第一框体20上，所述柔性显示屏10的相对两端分别固定于所述第一支撑板50和该第二支撑板上，所述第二预紧机构设于所述第一框体20上，且向第二支撑板施加一个第二预紧力，该第二预紧力的方向与所述第二方向相反。第二支撑板可以与第一支撑板的结构相同，第二预紧机构可以与第一预紧机构的结构相同。
在一些实施例中，所述显示装置100还包括两个前框70，如图4所示。两个前框70分别固定于第一框体20和所述第二框体30上，且设于所述柔性显示屏10背向所述第一框体20和所述第二框体30的一侧，用以将所述柔性显示屏10的周边压紧至所述第一框体20和所述第二框体30上，并保护所述柔性显示屏10的周边部分，防止外界灰尘异物、沙粒等损伤屏体。
请参见图6至图12，在本实施例中，所述铰链传动机构40包括传动组件401和铰链组件402。所述传动组件401设于所述第一框体20和所述第二框体30的对接处，且与所述第一框体20和所述第二框体30转动连接。所述铰链组件402与所述传动组件401铰接，且滑动设置于所述第一框体20和所述第二框体30中。可以理解地，在一些实施例中，所述铰链传动机构40也可以只包括所述传动组件401，即在一些实施例中，所述铰链传动机构40只需设置所述传动组件401以实现所述显示装置100在折叠状态和展开状态之间的切换即可。
优选地，所述传动组件401采用同步传动组件，以实现所述第一框体20和所述第二框体30的联合转动。可以理解地，在其它实施方式中，根据实际情况和要求，所述传动组件401也可采用其它传动结构，只要能够实现所述显示装置100在折叠状态和展开状态之间的切换即可。
具体地，在本实施例中，所述传动组件401采用同步传动组件，其至少包括基座13、两组齿轮传动单元12和两组连接单元11。所述基座13设于所述第一框体20和所述第二框体30的对接处。两组所述齿轮传动单元12收容于所述基座13内且分别设于所述基座13靠近两端的位置。两组所述连接单元11分别设于所述基座13的相对两端，用以将所述传动组件401与所述第一框体20和所述第二框体30转动连接。
具体地，在本实施例中，每组所述齿轮传动单元12包括安装座121、两个传动齿轮122和两个联动齿轮123。所述安装座121固定于所述基座13中，两个所述传动齿轮122和两个所述联动齿轮123的转轴可转动地设于所述安装座121中，两个所述联动齿轮123相互啮合且二者反向转动，且每一所述联动齿轮123与对应的一个所述传动齿轮122啮合且二者反向转动。
具体地，在本实施例中，所述安装座121包括第一部分1211和第二部分1212，所述第一部分1211和所述第二部分1212可拆卸地固定于所述基座13内。所述第一部分1211上设有四个第一安装孔12110，所述第二部分1212设有四个与所述第一安装孔12110对应的第二安装孔12120。两个所述传动齿轮122和两个所述联动齿轮123的所述转轴的两端分别对应安装于所述第一安装孔12110和所述第二安装孔12120内，以将两个所述传动齿轮122和两个所述联动齿轮123的齿轮部收容于所述第一部分121和所述第二部分122之间。
具体地，每组所述连接单元11包括第一连接件111和第二连接件112，所述第一连接件111和所述第二连接件112分别与两个所述传动齿轮122的所述转轴止转连接，所述第一连接件111与所述第一框体20固定连接，所述第二连接件112与所述第二框体30固定连接。
当所述显示装置100需要在折叠状态和展开状态之间切换时，所述第一框体20、所述第一连接件111和与所述第一连接件111对应的其中一个所述传动齿轮122三者同步运动，所述第二框体30、所述第二连接件112和与所述第一连接件111对应的其中一个所述传动齿轮122三者同步运动。同时，因两个所述联动齿轮123相互啮合且二者反向转动，因此，当所述第一框体20和/或所述第二框体30在外力作用下相对所述基座13转动时，两边的传动在两个所述联动齿轮123的作用下实现联动，有效提升了所述显示装置100在状态切换时转动的平稳性。
在一些实施方式中，所述传动组件401还包括盖板14，所述盖板14固定于所述基座13朝向所述柔性显示屏10的一侧，所述盖板14覆盖两组所述齿轮传动单元12，以闭合所述基座13上用以***述齿轮传动单元12的腔体，在起到保护所述齿轮传动单元12的目的的同时，可以有效防止灰尘等杂物进入至所述基座13内。另外，所述盖板14背向所述基座13的表面为平面，用以在展平状态时支撑所述柔性显示屏10的中间部位（也即，弯折部位），从未避免所述柔性显示屏10的塌陷。
在本实施例中，所述铰链组件402包括两个浮动板15和两组滑动件16，两个所述浮动板15分别与所述传动组件401的相对两侧铰接，两组所述滑动件16分别与对应的所述浮动板15铰接，且分别滑动设置于所述第一框体20和所述第二框体30上。需要说明的是，此处的“铰接”是指铰接的二者可以以一定的角度相对转动。
具体地，在本实施例中，两个浮动板15分别与所述基座13的相对两侧铰接。每一所述浮动板15包括本体部151和设于所述本体部151两侧的第一铰接部152。所述本体部151为平面板，所述第一铰接部152通过销（图未示）与所述基座13和所述滑动件16铰接。在所述显示装置100的状态切换中，每一所述浮动板15可绕与所述基座13的铰接点和与所述滑动件16的铰接点分别转动，以实现自身的展平和避让动作。具体地，在所述展平状态下，每一所述浮动板15的所述本体部151与所述盖板14齐平且相互抵持，以共同支撑所述柔性显示屏10，提升所述柔性显示屏10的平整性和支撑性，防止使用者在触摸或点击该区域时，屏幕产生塌陷/内凹，优先地，在本实施例中，此时每一所述浮动板15与所述第一框体20和所述第二框体30平行。在所述折叠状态下，两个所述浮动板15和所述盖板14三者构成三角空间，以容纳所述柔性显示屏10的弯折部分。
具体地，两个浮动板15包括或分别为第一浮动板1501和第二浮动板1502。
具体地，每组所述滑动件16中滑动件16的数量为至少一个。每个所述滑动件16包括滑动部161和与所述滑动部161连接的第二铰接部162。所述第二铰接部162与对应的所述第一铰接部152通过销铰接，所述滑动部161滑动设于对应的所述第一框体20或所述第二框体30上。
具体地，所述第一框体20和所述第二框体30上设有与所述滑动件16相同数量的滑动槽，所述滑动部161滑动并收容于对应的所述滑动槽中。在本实施例中，每一所述滑动槽内固定有一个导向板163，所述导向板163上设有沿所述第二方向延伸的滑道，所述滑动部161滑动设于所述导向板163上，并能够沿着所述滑道相对所述导向板163往复运动。可以理解地，在其它实施例中，所述导向板163也可以省略，滑动也可以设于所述滑动槽内，只要能够满足所述滑动部161与对应所述第一框体20或所述第二框体30的滑动连接即可。
可以理解的，为了方便说明，可以定义：与所述第一框体20连接的所述滑动件16为第一滑动件1601，与所述第二框体30连接的所述滑动件16为第二滑动件1602；与所述第一滑动件1601连接的浮动板15为第一浮动板1501，与所述第二滑动件1602连接的浮动板15为第二浮动板1502，设于所述第一框体20上的滑动槽为第一滑动槽（图未示），设于所述第二框体30上的滑动槽为第二滑动槽301。优选地，所述第一滑动件1601的数量与所述第二滑动件1602的数量相同。在本实施例中，每组所述滑动件16中滑动件16的数量为两个，即，所述显示装置100包括两个所述第一滑动件1601和两个所述第二滑动件1602。两个所述第一滑动件1601间隔设置，两个所述第二滑动件1602间隔设置。优选地，两个所述第一滑动件1601在所述第一浮动板1501上沿所述第一方向均匀分布，以提升所述第一浮动板1501转动的稳定性；两个所述第二滑动件1602在所述第一浮动板1501上沿所述第一方向均匀分布，以提升所述第二浮动板1502转动的稳定性。
请参见图13至图16，在一些实施方式中，所述第一支撑板50为平面板结构，在所述展平状态下，所述第一支撑板50与所述盖板14齐平设置，以共同支撑所述柔性显示屏10；在所述折叠状态下，所述第一支撑板50垂直所述盖板14设置，以支撑所述柔性显示屏10的非弯折部分。所述第一支撑板50通过至少一个滑块80与所述第二框体30滑动连接。所述滑块80固定于所述第一支撑板50朝向所述第二框体30的一侧，所述第二框体30上对应设有至少一个滑槽302，所述滑块80可滑动地收容于所述滑槽302内。具体地，在本实施例中，所述滑块80和所述滑槽302的数量均为两个。两个所述滑块80通过螺钉90固定于所述第一支撑板50上，两个所述滑槽302在所述第二框体30上沿所述第一方向均匀分布，以提升所述第一支撑板50滑动的稳定性。
在一些实施方式中，所述第一支撑板50的相对两侧还分别设有凸耳501，所述第二框体30上对应设有两个卡槽303，所述凸耳501对应收容于所述卡槽303内，且所述凸耳501能够沿第二方向在对应所述卡槽303内往复运动。
优选地，所述第一预紧机构60中的所述第一预紧力的施力源采用弹性物体，所述第一预紧力为弹性力。如此设计可以使得所述显示装置在所述折叠状态和所述展开状态之间切换时，所述第一预紧机构60对所述第一支撑板50施加的所述第一预紧力具有浮动性，该浮动性可以使得所述第一预紧力能够根据相关结构（如所述第一支撑板50和所述铰链传动机构40）与该施力源之间的位置关系作出对应的“自我调整”，而避免对相关结构发生碰撞或拉扯，延长装置寿命。可以理解地，所述第一预紧机构60中的所述第一预紧力的施力源也可以不局限于弹力物体，该施力源的选择可以根据实际情况进行调整，当所述显示装置在所述折叠状态和所述展开状态之间切换时，在相关结构的位置不会对该施力源产生干扰的情况下，该施力源也可以是普通具有弹性的物体或常规传动件，只需该施力源满足其能够在两种不同状态下对所述第一支撑板50施加两种固定力即可。在一些优选实施方式中，所述第一预紧机构60包括至少一组弹簧组件，每组弹簧组件包括弹簧61和推销62。所述推销62安装于所述第一支撑板50上，所述弹簧61套接于所述推销62上且呈压缩状收容于所述第二框体30中。即，在一些优选实施方式中，所述第一预紧机构60中的所述第一预紧力的施力源采用弹簧61，所述第一预紧力为所述弹簧61弹性形变产生的弹性力。可以理解地，在一些其它的优选实施例中，所述第一预紧机构60中的所述第一预紧力的施力源也可以是其它弹性物体，如卷簧等。
具体地，在本实施例中，所述第一支撑板50上设有导槽502，所述推销62穿设于所述导槽502内。优选地，所述导槽502的长度略大于所述推销62的直径，以使所述推销62能够沿所述第二方向在所述导槽502内小幅度地往复运动，以提升所述第一支撑板50运动的浮动性。
具体地，在本实施例中，所述第二框体30上设有至少一个收容槽304，所述弹簧61呈压缩状收容于对应所述收容槽304内。具体地，所述弹簧61的一端抵持所述推销62，所述弹簧61的另一端抵持所述收容槽304靠近所述基座13的一端的内端面，从而使得所述弹簧61对所述第一支撑板50施加的第一预紧力的方向为所述第二方向。可以理解地，因为所述第一框体20和所述第二框体30二者之间并非直接转动连接，而是通过分别所述铰链传动机构40转动连接，从而实现二者之间的转动连接，因此，在所述折叠状态下，所述柔性显示屏10的弯折部位毫无疑义会在所述铰链传动机构40用于连接所述第一框体20和所述第二框体30的对应部位形成类似“水滴”的折叠形状。此处“水滴”折叠形状使得在折叠状态下所述柔性显示屏10的端部至弯折中心的直线距离（沿所述第二方向上）小于在在展开状态下所述柔性显示屏10的端部至弯折中心的直线距离（沿所述第二方向上），因此在所述显示装置100在折叠状态和所述展开状态的切换过程中，所述第一预紧力的大小是可以随状态的改变而变化大小的。具体地，在所述展开状态下，所述第一预紧力的值最大，在所述折叠状态下，所述第一预紧力的值最小。
优选地，所述第一预紧机构60包括两组弹簧组件，两组所述弹簧组件对称性地设于所述第一支撑板50靠近相对两侧的边缘位置，以提升所述第一支撑板50在所述第一预紧力下的平衡性。
优选地，在所述显示装置100在展开状态下，所述第一支撑板50靠近所述基座13的一侧与所述浮动板15抵持；在所述显示装置100在折叠状态下，所述第一支撑板50靠近所述基座13的一侧与所述浮动板15间隔。如此可在展开状态下进一步增大对所述第一支撑板50的预紧力，提升所述柔性显示屏10的张力。可以理解地，在一些实施方式中，在所述显示装置100在折叠状态和所述展开状态的切换过程中，所述第一支撑板50靠近所述基座13的一侧也可以始终与所述浮动板15抵持；在一些实施方式中，在所述显示装置100在折叠状态和所述展开状态的切换过程中，所述第一支撑板50靠近所述基座13的一侧也可以始终与所述浮动板15间隔。
具体地，本实施例中的所述显示装置100为优选方案，在本实施例中，当所述显示装置100在所述折叠状态和所述展平状态之间切换时，各结构的运动和连接关系说明如下。
当所述显示装置100处于展平状态时，所述第一框体20和所述第二框体30可以相互抵接，所述铰链传动机构40可以容设在所述第一框体20和所述第二框体30中，所述柔性显示屏10呈平面支撑于所述第一支撑板50、浮动板15和盖板14上，此时所述弹簧61压缩量最大，所述第一预紧力处于最大值。
当所述装置100由展平状态向折叠状态切换时，所述第一框体20和所述第二框体30在外力作用下相对所述基座13转动且相向运动，直至所述第一框体20和所述第二框体30呈平行状态闭合贴近，在此过程中：
所述第一框体20和所述第二框体30分别带动两个所述传动齿轮122转动，两个所述传动齿轮122分别带动两个所述联动齿轮123转动，两个所述联动齿轮123啮合实现所述第一框体20和所述第二框体30转动的同步性和稳定性；
所述第一框体20和所述第二框体30分别带动所述柔性显示屏10的两端相向运动，两个所述浮动板15分别相对所述盖板14转动，同时所述第一滑动件1601相对所述第一框体20沿与所述第二方向相反的方向运动，所述第二滑动件1602相对所述第二框体30沿所述第二方向运动，两个所述浮动板15带动所述柔性显示屏10的中间部位逐渐弯折成“水滴”，此时，直至两个所述浮动板15和所述盖板14三者构成三角空间，所述柔性显示屏10的“水滴”弯折部分容纳与该三角空间内；同时，随着所述柔性显示屏10的中间部位逐渐弯折，所述柔性显示屏10的端部至中心位置的直线距离（沿所述第二方向）逐渐减小，所述弹簧61的压缩量逐渐减小，所述弹簧61驱动所述第一支撑板50相对所述第一框体20逐步沿所述第二方向运动，所述第一预紧力逐渐减小并在折叠完成时达到最小值。
当所述显示装置100完全处于折叠状态时，所述第一框体20和所述第二框体30呈平行状态闭合贴近，两个所述浮动板15和所述盖板14三者构成三角空间，所述柔性显示屏10的“水滴”弯折部分容纳与该三角空间内，所述弹簧61的压缩量最小，所述第一预紧力处于最小值。
当所述装置100由折叠状态向展平状态切换时，各结构的运动与其在所述装置100由展平状态向折叠状态切换过程中的运动相反，此处不再赘述。
以上对本申请实施例所提供的显示装置及其折叠显示模组进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本申请的限制。
Claims (24)
- 一种显示装置，其中，所述显示装置包括：第一框体；第二框体，与所述第一框体对接；铰链传动机构，设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体分别转动连接，所述第一框体和所述第二框体相对所述铰链传动机构转动时的转动轴沿第一方向；第一支撑板，与所述第二框体滑动连接，所述第一支撑板能够相对所述第二框体沿第二方向往复运动，所述第二方向由所述第一支撑板靠近所述铰链传动机构的一端指向所述第一支撑板远离所述铰链传动机构的一端，且所述第二方向垂直所述第一方向；柔性显示屏，一端固定于所述第一框体上，另一端固定贴合于所述第一支撑板背向所述第二框体的一侧；以及第一预紧机构，设于所述第二框体上，且向所述第一支撑板施加一个第一预紧力，所述第一预紧力的方向与所述第二方向相同。
- 如权利要求1所述的显示装置，其中，所述第一预紧力的施力源为弹性物体，所述第一预紧力为弹性力。
- 如权利要求2所述的显示装置，其中，所述第一预紧机构包括至少一组弹簧组件，所述弹簧组件包括弹簧和推销，所述推销安装于所述第一支撑板上，所述弹簧套接于所述推销上且呈压缩状收容于所述第二框体中，所述弹簧向所述第一支撑板施加所述第一预紧力。
- 如权利要求3所述的显示装置，其中，所述第一支撑板上设有至少一个导槽，所述推销穿设于所述导槽内。
- 如权利要求4所述的显示装置，其中，所述导槽的长度大于所述推销的直径，所述推销能够沿所述第二方向在所述导槽内往复运动。
- 如权利要求3所述的显示装置，其中，所述第二框体上设有至少一个收容槽，所述弹簧呈压缩状收容于对应所述收容槽内，所述弹簧的一端抵持所述推销，所述弹簧的另一端抵持所述收容槽靠近所述铰链传动机构的一端的内端面。
- 如权利要求3所述的显示装置，其中，所述第一预紧机构包括两组弹簧组件，两组所述弹簧组件对称性地设于所述第一支撑板靠近相对两侧的边缘位置。
- 如权利要求3所述的显示装置，其中，所述显示装置包括折叠状态和展开状态，所述第一预紧力的值在所述展开状态下大于在所述折叠状态下。
- 如权利要求1所述的显示装置，其中，所述显示装置还包括至少一个滑块，所述滑块固定于所述第一支撑板朝向所述第二框体的一侧，所述第二框体设有至少一个滑槽，所述滑块可滑动地收容于所述滑槽内，所述滑块和所述滑槽的配合实现所述第二框体与所述第一支撑板的滑动连接。
- 如权利要求9所述的显示装置，其中，所述显示装置包括两个滑块，每一所述滑块固定于所述第一支撑板朝向所述第二框体的一侧，两个所述滑槽在所述第二框体上沿所述第一方向均匀分布，所述第二框体设有两个滑槽，每一所述滑块可滑动地收容于对应的所述滑槽内。
- 如权利要求1所述的显示装置，其中，所述第一支撑板的相对两侧还分别设有凸耳，所述第二框体上设有两个卡槽，两个所述凸耳对应收容于两个所述卡槽内，且每一所述凸耳可在对应所述卡槽内沿所述第二方向往复运动。
- 如权利要求1所述的显示装置，其中，所述铰链传动机构包括传动组件和铰链组件，所述传动组件设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体转动连接，所述铰链组件与所述传动组件铰接。
- 如权利要求12所述的显示装置，其中，所述铰链传动机构包括传动组件，所述传动组件设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体转动连接；所述传动组件包括：基座，设于所述第一框体和所述第二框体的对接处，所述铰链组件与所述基座铰接；两组齿轮传动单元，收容于所述基座内且分别设于所述基座靠近两端的位置；其中，每组所述齿轮传动单元包括安装座、两个传动齿轮和两个联动齿轮，所述安装座固定于所述基座中，两个所述传动齿轮和两个所述联动齿轮的转轴可转动地设于所述安装座中，两个所述联动齿轮相互啮合且二者反向转动，且每一所述联动齿轮与对应的一个所述传动齿轮啮合且二者同向转动；以及两组连接单元，分别设于所述基座的相对两端；其中，每组所述连接单元包括第一连接件和第二连接件，所述第一连接件和所述第二连接件分别与两个所述传动齿轮的所述转轴止转连接，所述第一连接件与所述第一框体固定连接，所述第二连接件与所述第二框体固定连接。
- 如权利要求13所述的显示装置，其中，所述安装座包括第一部分和第二部分，所述第一部分和所述第二部分可拆卸地固定于所述基座内，所述第一部分上设有四个第一安装孔，所述第二部分设有四个与所述第一安装孔对应的第二安装孔，两个所述传动齿轮和两个所述联动齿轮的所述转轴的两端分别对应安装于所述第一安装孔和所述第二安装孔内，以将两个所述传动齿轮和两个所述联动齿轮的齿轮部收容于所述第一部分和所述第二部分之间。
- 如权利要求13所述的显示装置，其中，所述传动组件还包括盖板，所述盖板固定于所述基座朝向所述柔性显示屏的一侧，所述盖板覆盖两组所述齿轮传动单元。
- 如权利要求15所述的显示装置，其中，所述显示装置包括折叠状态和展开状态，在所述折叠状态下，所述盖板垂直于所述第一支撑板，在所述展开状态下，所述盖板与所述第一支撑板齐平。
- 如权利要求12所述的显示装置，其中，所述铰链组件包括两个浮动板、至少一个第一滑动件和至少一个第二滑动件，两个所述浮动板分别与所述传动组件的相对两侧铰接，所述第一滑动件和所述第二滑动件分别与对应的所述浮动板铰接，所述第一滑动件滑动设置于所述第一框体上，所述第二滑动件滑动设置于所述第二框体上。
- 如权利要求17所述的显示装置，其中，每一所述浮动板包括本体部和设于所述本体部两侧的第一铰接部，所述本体部为平面板，所述铰接部与所述传动组件和所述滑动件或所述第二滑动件铰接。
- 如权利要求18所述的显示装置，其中，所述显示装置包括折叠状态和展开状态，在所述展开状态下，所述本体部与所述第一支撑板齐平。
- 如权利要求18所述的显示装置，其中，所述第一滑动件和所述第二滑动件的结构相同，所述第一滑动件和所述第二滑动件中的每一个包括相互连接的第二铰接部和滑动部，所述第一滑动件的所述第二铰接部与第一浮动板铰接，所述第二滑动件的所述第二铰接部与第二浮动板铰接，所述第一框体上设有至少一个第一滑动槽，所述第二框体上设有至少一个第二滑动槽，所述第一滑动件的所述滑动部的可滑动地收容于所述第一滑动槽内，所述第二滑动件的所述滑动部可滑动地收容于所述第二滑动槽内。
- 如权利要求1所述的显示装置，其中，所述显示装置还包括两个前框，两个所述前框分别固定于第一框体和所述第二框体上且设于所述柔性显示屏背向所述第一框体和所述第二框体的一侧。
- 如权利要求1所述的显示装置，其中，所述显示装置还包括前置摄像头，所述前置摄像头设于所述第一框体。
- 一种显示装置，其中，所述显示装置包括：第一框体；第二框体，与所述第一框体对接；铰链传动机构，设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体分别转动连接，所述第一框体和所述第二框体相对所述铰链传动机构转动时的转动轴沿第一方向；第一支撑板，与所述第二框体滑动连接，所述第一支撑板能够相对所述第二框体沿第二方向往复运动，所述第二方向由所述第一支撑板靠近所述铰链传动机构的一端指向所述第一支撑板远离所述铰链传动机构的一端，且所述第二方向垂直所述第一方向；第二支撑板，与所述第一框体滑动连接，所述第二支撑板能够相对所述第一框体沿所述第二方向往复运动；柔性显示屏，一端固定于所述第二支撑板背向所述第二框体的一侧，另一端固定贴合于所述第一支撑板背向所述第二框体的一侧；第一预紧机构，设于所述第二框体上，且向所述第一支撑板施加一个第一预紧力，所述第一预紧力的方向与所述第二方向相同；以及第二预紧机构，设于所述第一框体上，且向所述第二支撑板施加一个第二预紧力，所述第二预紧力的方向与所述第二方向相反。
- 一种折叠显示模组，用以与相互对接的第一框体和第二框体组合以组成显示装置，其中，所述折叠显示模组包括：铰链传动机构，设于所述第一框体和所述第二框体的对接处，且与所述第一框体和所述第二框体分别转动连接，所述第一框体和所述第二框体相对所述铰链传动机构转动时的转动轴沿第一方向；第一支撑板，与所述第二框体滑动连接，所述第一支撑板能够相对所述第二框体沿第二方向往复运动，所述第二方向由所述第一支撑板靠近所述铰链传动机构的一端指向所述第一支撑板远离所述铰链传动机构的一端，且所述第二方向垂直所述第一方向；柔性显示屏，一端固定于所述第一框体上，另一端固定贴合于所述第一支撑板背向所述第二框体的一侧；以及第一预紧机构，设于所述第二框体上，且向所述第一支撑板施加一个第一预紧力，所述第一预紧力的方向与所述第二方向相同。
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