DISPLAY DEVICE AND FOLDING DISPLAY MODULE THEREOF

The disclosure provides a display device and a folding display module thereof. The display device includes: a first frame and a second frame butted with the first frame; a hinge transmission mechanism; a first support plate slidably connected to the second frame and being capable to reciprocate relative to the second frame along a second direction; a flexible display screen, wherein an end of the flexible display screen is fixedly attached on the first support plate; and a first preload mechanism disposed on the second frame and being configured to exert a first preload force on the first support plate, wherein a direction of the first preload force is same as the second direction.

TECHNICAL FIELD

The disclosure relates to the technical field of display, in particular to a display device and a folding display module thereof.

BACKGROUND

Foldable electronic devices combine portability of ordinary electronic devices and ultimate experience of large-sized screen displays after flattening. Therefore, the foldable electronic devices have gradually become an important trend in development of mobile terminals, and have become an important field of competition for major terminal manufacturers.

However, in the prior art, after repeated folding of the folding display devices, due to fatigue plastic deformation of film materials and adhesive materials at bending areas of display screens, existing folding display devices are prone to crease at the bending areas.

SUMMARY

The disclosure provides a display device and a folding display module thereof to improve a technical problem that display screens are prone to crease after repeated folding.

The disclosure provides a display device, and the display device includes:

a first frame;

a second frame butted with the first frame;

a hinge transmission mechanism disposed at a butt joint of the first frame and the second frame, and rotationally connected to the first frame and the second frame, respectively, wherein a rotation shaft of the first frame and the second frame when rotating relative to the hinge transmission mechanism extends along a first direction;

a first support plate slidably connected to the second frame, wherein the first support plate is capable to reciprocate relative to the second frame along a second direction, the second direction points from an end of the first support plate close to the hinge transmission mechanism 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, wherein an end of the flexible display screen is fixed on the first frame, and another end of the flexible display screen is fixedly attached on a side of the first support plate away from the second frame; and

a first preload mechanism disposed on the second frame, wherein the first preload mechanism is configured to exert a first preload force on the first support plate, and a direction of the first preload force is same as the second direction.

The disclosure further provides a display device, and the display device includes:

a first frame;

a second frame butted with the first frame;

a hinge transmission mechanism disposed at a butt joint of the first frame and the second frame, and rotationally connected to the first frame and the second frame, respectively, wherein a rotation shaft of the first frame and the second frame when rotating relative to the hinge transmission mechanism extends along a first direction;

a first support plate slidably connected to the second frame, wherein the first support plate is capable to reciprocate relative to the second frame along a second direction, the second direction points from an end of the first support plate close to the hinge transmission mechanism 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 slidably connected to the first frame, wherein the second support plate is capable to reciprocate relative to the first frame in the second direction;

a flexible display screen, wherein an end of the flexible display screen is fixed on the second support plate away from the second frame, and another end of the flexible display screen is fixedly attached on a side of the first support plate away from the second frame;

a first preload mechanism disposed on the second frame, wherein the first preload mechanism is configured to exert a first preload force on the first support plate, and a direction of the first preload force is same as the second direction; and

a second preload mechanism disposed on the first frame, wherein the second preload mechanism is configured to exert a second preload force on the second support plate, and a direction of the second preload force is opposite to the second direction.

The disclosure further provides a folding display module configured to combine with a first frame and a second frame to constitute a display device, and the folding display module includes:

a hinge transmission mechanism disposed at a butt joint of the first frame and the second frame, and rotationally connected to the first frame and the second frame, respectively, wherein a rotation shaft of the first frame and the second frame when rotating relative to the hinge transmission mechanism extends along a first direction;

a first support plate slidably connected to the second frame, wherein the first support plate is capable to reciprocate relative to the second frame along a second direction, the second direction points from an end of the first support plate close to the hinge transmission mechanism 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, wherein an end of the flexible display screen is fixed on the first frame, and another end of the flexible display screen is fixedly attached on a side of the first support plate away from the second frame; and

a first preload mechanism disposed on the second frame, wherein the first preload mechanism is configured to exert a first preload force on the first support plate, and a direction of the first preload force is same as the second direction.

In the display device and the folding display module applied to the display device provided by the disclosure, a cooperation of the first frame, the second frame, and the hinge transmission mechanism can realize switching of the display device between the folded state and the flattened state. At s same time, a structural design of the first support plate and the first preload mechanism can be utilized to exert a preload force on the flexible display screen, so as to ensure that the flexible display screen always maintains a certain pretension force, so that a folding position of the flexible display screen is not easy to crease when the display device switches between the folded state and the flattened state.

flexible display screen10, first frame20, second frame30, hinge transmission mechanism40, first support plate50, first preload mechanism60, front frame70, slide block80, and screw90;

first connecting element111, second connecting element112, mounting base121, transmission gear122, linkage gear123, body part151, first hinge part152, sliding part161, second hinge part162, and guiding plate163; and

first part1211, first mounting hole12110, second part1212, second mounting hole12120, first floating plate1501, second floating plate1502, first sliding element1601, and second sliding element1602.

DETAILED DESCRIPTION OF EMBODIMENT

In combination with drawings in the embodiments of the disclosure, technical solutions in the embodiments of the disclosure will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the disclosure, not all of them. Based on the embodiments of the disclosure, all other embodiments obtained by those skilled in the art without creative effort belong to a scope of the disclosure. In addition, it should be understood that specific embodiments described herein are only used to explain and interpret the disclosure and are not used to limit the disclosure. In the disclosure, location terms used, such as “up” and “down”, generally refer to up and down in actual using or working state of devices, in particular drawing directions in the drawings, unless otherwise described; terms “inside” and “outside” refer to outlines of the devices.

Referring toFIG.1toFIG.4, the disclosure provides a display device100, and the display device100is operable in a flattened state (as shown inFIG.1) and a folded state (as shown inFIG.2). The display device100includes at least a flexible display screen10, a first frame20, a second frame30, a hinge transmission mechanism40, a first support plate50, and a first preload mechanism60. The first frame20is butted with the second frame30. The flexible display screen10is disposed on the first frame20and the second frame30. The hinge transmission mechanism40is disposed at a butt joint of the first frame20and the second frame30, and is rotatably connected to the first frame20and the second frame30, respectively. The first support plate50is slidably connected to the second frame30. An end of the flexible display screen10is fixed on the first frame20, and another end of the flexible display screen10is fixedly attached on a side of the first support plate50away from the second frame30. The first preload mechanism60is disposed on the second frame30and configured to exert a first preload force on the first support plate50. The first support plate50is configured to flatten the flexible display screen10under an action of the first preload force.

Specifically, the first frame20and the second frame30can rotate relative to the hinge transmission mechanism40to switch the display device100between the flattened state and the folded state. For convenience of explanation, it is defined that a rotation shaft of the first frame20and the second frame30when rotating relative to the hinge transmission mechanism40extends along a first direction. A direction in which the first support plate50can reciprocate relative to the second frame30is a second direction, and the second direction points from an end of the first support plate50close to the hinge transmission mechanism40to an end of the first support plate50away from the hinge transmission mechanism40. The second direction is perpendicular to the first direction. A direction of the first preload force is same as the second direction.

By using a cooperation of the first frame20, the second frame30, and the hinge transmission mechanism40, the disclosure can realize switching of the display device100between the folded state and the flattened state. At a same time, a structural design of the first support plate50and the first preload mechanism60can be utilized to exert the first preload on the flexible display screen10, so as to ensure that the flexible display screen10always maintains a certain pretension force, so that a folding position of the flexible display screen10is not easy to crease when the display device100switches between the folded state and the flattened state.

Preferably, during a process of structural assembly, the hinge transmission mechanism40, the first support plate50, the first preload mechanism60, and the flexible display screen10are first assembled to form a folded display module, as shown inFIG.5, then, the folded display module is assembled into the first frame20and the second frame30. The above-mentioned assembly method can reduce a risk of screen failure caused by mismatch of bending track caused by excessive assembly errors between the flexible display screen10and the hinge transmission mechanism40, and at a same time, assembly convenience and an assembly yield of the entire display device can be improved. It can be understood that an assembly sequence of the display device100may also be selected according to actual situations when the display device100is assembled in other embodiments.

The following describes structures of each part of the display device100, interconnection of the structures of each part, and actuation relationships between the structures of each part in detail.

The flexible display screen10is a flexible folding screen body, which can, but is not limited to, various flexible display bodies with corresponding functions such as conventional flexible display screens, flexible touch screens, etc. The first frame20and the second frame30are both middle frame structures of the display device100.

In some embodiments, the flexible display screen10can be attached to the first support plate50and the second frame30through an easy-to-pull adhesive or a mesh adhesive.

In some embodiments, when the display device100is in the flattened state, the first frame20may be abutted against the second frame30, and the hinge transmission mechanism40may be accommodated in the first frame20and the second frame30. When the display device100is operable in in the folded state, the first frame20and the second frame30may be separated from each other, and the hinge transmission mechanism40may be exposed at least in part. It can be understood that in other embodiments, when the display device100is in the flattened state, the first frame20and the second frame30may also be abutted against two sides of the hinge transmission mechanism40, respectively. When the display device100is operable in the folded state, a part of the hinge transmission mechanism40used to connect the first frame20with the second frame30is exposed. Preferably, in the folded state, the first frame20and the second frame30shut and are close to each other in a parallel state, and there is basically no gap between the first frame20and the second frame30after shutting, so as to prevent entry of external dust, foreign matters, particles, etc., thus protecting the screen body.

In some embodiments, in addition to the above-mentioned structures, other structures may be installed on a middle frame. For example, in the embodiment, the display device100also includes a front camera (not shown in the figures), and the front camera is installed on the first frame20.

It can be understood that in other embodiments, if there is no front camera or there are other installation methods for installing the front camera, the display device100may also include a second support plate and a second preload mechanism. The second support plate is slidably installed on the first frame20. Two opposite ends of the flexible display screen10are fixed on the first support plate50and the second support plate, respectively. The second preload mechanism is disposed on the first frame20and configured to exert a second preload force on the second support plate, and a direction of the second preload force is opposite to the second direction. A structure of the second support plate and a structure of the first support plate may be same. A structure of the second preload mechanism and a structure of the first preload mechanism may be same.

In some embodiments, the display device100also includes two front frames70, as shown inFIG.4. Two front frames70are respectively fixed on the first frame20and the second frame30, and are disposed on a side of the flexible display screen10away from the first frame20and the second frame30, so as to tightly press periphery of the flexible display screen10onto the first frame20and the second frame30, and to protect peripheral parts of the flexible display screen10to prevent external dust, foreign matters, sand, etc. from damaging the screen body.

Referring toFIG.6toFIG.12. In the embodiment, the hinge transmission mechanism40includes a transmission assembly401and a hinge assembly402. The transmission assembly401is disposed at the butt joint of the first frame20and the second frame30, and is rotatably connected to the first frame20and the second frame30. The hinge assembly402is hinged with the transmission assembly401and slidably disposed in the first frame20and the second frame30. It can be understood that in some embodiments, the hinge transmission mechanism40may also only include the transmission assembly401, that is, in some embodiments, only the transmission assembly401needs to be designed in the hinge transmission mechanism40to realize switching of the display device100between the folded state and the flattened state.

Preferably, the transmission assembly401uses a synchronous transmission assembly to realize joint rotation of the first frame20and the second frame30. It can be understood that the transmission assembly401may also use other transmission structures according to actual situations and requirements in other embodiments, as long as the switching of the display device100between the folded state and the flattened state can be realized.

Specifically, in the embodiment, the transmission assembly401uses the synchronous transmission assembly, the synchronous transmission assembly includes at least a base13, two gear transmission units12, and two connecting units11. The base13is disposed at the butt joint of the first frame20and the second frame30. The two gear transmission units12are accommodated in the base13and respectively disposed at positions close to two ends of the base13. The two connecting units11are respectively disposed at two opposite ends of the base13, so as to rotatably connect the transmission assembly401with the first frame20and the second frame30.

Specifically, in the embodiment, each gear transmission unit12includes a mounting base121, two transmission gears122, and two linkage gears123. The mounting base121is fixed in the base13. Rotation shafts of the two transmission gears122and rotation shafts of the two linkage gears123are rotatably disposed in the mounting base121. The two linkage gears123are meshed with each other and configured to rotate in opposite directions. Each linkage gear123is meshed with a corresponding transmission gear122, and each linkage gear123and the corresponding transmission gear122are configured to rotate in opposite directions.

Specifically, in the embodiment, the mounting base121includes a first part1211and a second part1212. The first part1211and the second part1212are detachably fixed in the base13. The first part1211is provided with four first mounting holes12110, and the second part1212is provided with four second mounting holes12120corresponding to the four first mounting holes12110. Two ends of the rotation shafts of the two transmission gears122and two ends of the rotation shafts of the two linkage gears123are correspondingly installed in the four first mounting hole12110and the four second mounting hole12120, respectively, so as to accommodate gear parts of the two transmission gears122and gear parts of the two linkage gears123between the first part121and the second part122.

Specifically, each connecting unit11includes a first connecting element111and a second connecting element112. The first connecting element111and the second connecting element112are connected to the rotation shafts of the two transmission gears122, respectively. The first connecting element111is fixedly connected to the first frame20, and the second connecting element112is fixedly connected to the second frame30.

When the folded state and the flattened state of the display device100needs to be switched, the first frame20, the first connecting element111, and the transmission gear122corresponding to the first connecting element111move synchronously, and the second frame30, the second connecting element112, and the transmission gear122corresponding to the first connecting element111move synchronously. At a same time, since the two linkage gears123are meshed with each other and configured to rotate in opposite directions, when the first frame20and/or the second frame30rotate relative to the base13under an action of an external force, transmission on two sides realizes linkage under an action of the two linkage gears123, thus effectively improving stability of rotation of the display device100when the states are switched.

In some embodiments, the transmission assembly401also includes a cover plate14, the cover plate14is fixed on a side of the base13towards the flexible display screen10, and the cover plate14covers the two gear transmission units12, so as to shut a cavity of the base13configured to accommodate the gear transmission unit12, and while protecting the gear transmission unit12, the cover plate14can effectively prevent dust and other debris from entering the base13. In addition, a surface of the cover plate14away from the base13is a plane, the plane is configured to support a middle part of the flexible display screen10(that is, a bending part) in the flattened state, thereby avoiding collapse of the flexible display screen10.

In the embodiment, the hinge assembly402includes two floating plates15and two groups of sliding elements16. The two floating plates15are hinged with two opposite sides of the transmission assembly401, respectively. The two groups of sliding elements16are respectively hinged with corresponding floating plate15, and are slidably disposed on the first frame20and the second frame30, respectively. It should be noted that “hinged” herein means that two hinged parts can relatively rotate at a certain angle.

Specifically, in the embodiment, the two floating plates15are hinged with two opposite sides of the base13, respectively. Each floating plate15includes a body part151and a first hinge part152disposed on two sides of the body part151. The body part151is a flat plate, and the first hinge part152is hinged with the base13and the sliding element16through a pin (not shown in the figures). In state switching of the display device100, each floating plate15can respectively rotate around hinge points hinged with the base13and hinge points hinged with the sliding element16to achieve actions of flattening and avoidance. Specifically, in the flattened state, the body part151of each floating plate15is flush with the cover plate14and abutted against each other, so as to jointly support the flexible display screen10, improve flatness and supportability of the flexible display screen10, and prevent the flexible display screen10from collapsing or concaving when users touch or clicks collapsing or concaving area. Preferably, in the embodiment, in the above-mentioned situations, each floating plate15is parallel to the first frame20and the second frame30. In the folded state, the two floating plates15and the cover plate14define a triangular space to accommodate bending parts of the flexible display screen10.

Specifically, the two floating plates15include or are respectively a first floating plate1501and a second floating plate1502.

Specifically, a number of sliding elements16in each group of the sliding element16is at least one. Each sliding element16includes a sliding part161and a second hinge part162connected to the sliding part161. The second hinge part162is hinged with corresponding first hinge part152by a pin, and the sliding part161is slidably disposed on the corresponding first frame20or the corresponding second frame30.

Specifically, the first frame20and the second frame30are both provided with a same number of sliding slots as the sliding element16, and the sliding part161is slidably disposed and accommodated in a corresponding sliding slot. In the embodiment, each sliding slot is fixed with a guiding plate163, the guiding plate163is provided with a slideway extending along the second direction, and the slide part161is slidably disposed on the guiding plate163and can reciprocate relative to the guiding plate163along the slideway. It can be understood that the guiding plate163may also be omitted and sliding may also be disposed in the sliding slot in other embodiments, as long as it can meet a sliding connection between the sliding part161and the first frame20or the second frame30.

Understandably, for convenience of explanation, it can be defined that the sliding element16connected to the first frame20is a first sliding element1601, and the sliding element16connected to the second frame30is a second sliding element1602. The floating plate15connected to the first sliding element1601is a first floating plate1501, and the floating plate15connected to the second sliding element1602is a second floating plate1502. The sliding slot disposed on the first frame20is a first sliding slot (not shown in the figures), and the sliding slot disposed on the second frame30is a second sliding slot301. Preferably, a number of the first sliding element1601is same as a number of the second sliding element1602. In the embodiment, a number of sliding elements16in each group of the sliding element16is two, that is, the display device100includes two first sliding elements1601and two second sliding elements1602. The two first sliding elements1601are spaced from each other, and the two second sliding elements1602are spaced from each other. Preferably, the two first sliding elements1601are evenly distributed on the first floating plate1501along the first direction to improve stability of rotation of the first floating plate1501. The two second sliding elements1602are evenly distributed on the first floating plate1501along the first direction to improve stability of rotation of the second floating plate1502.

Referring toFIG.13toFIG.16. In some embodiments, the first support plate50is a flat plate structure. In the flattened state, the first support plate50is flush with the cover plate14, so as to jointly support the flexible display screen10. In the folded state, the first support plate50is disposed vertically to the cover plate14, so as to support non-bending parts of the flexible display screen10. The first support plate50is slidably connected to the second frame30through at least one slide block80. The slide block80is fixed on a side of the first support plate50towards the second frame30. The second frame30is correspondingly provided with at least one slide slot302, and the slide block80is slidably accommodated in the slide slot302. Specifically, in the embodiment, both a number of the slide blocks80and a number of the slide slots302are two. The two slide blocks80are fixed on the first support plate50by screws90, and the two slide slots302are evenly distributed on the second frame30along the first direction, so as to improve stability of sliding of the first support plate50.

In some embodiments, two opposite sides of the first support plate50are also respectively provided with a lug501. The second frame30is correspondingly provided with two clamping slots303. A lug501is correspondingly accommodated in the clamping slot303, and the lug501can reciprocate in the corresponding clamping slot303along the second direction.

Preferably, a force source of the first preload force in the first preload mechanism60is an elastic object, and the first preload force is an elastic force. This design can make the first preload force exerted by the first preload mechanism60on the first support plate50have floatability when the display device switches between the folded state and the flattened state, and the floatability can enable the first preload force to make corresponding “self-adjustment” according to position relationships between relevant structures (such as the first support plate50and the hinge transmission mechanism40) and the force source, so as to avoid collision or pulling on relevant structures, thus prolonging service life of the device. It can be understood that the force source of the first preload force in the first preload mechanism60can also be not limited to the elastic object. Selection of the force source can be adjusted according to actual situations. When the display device switches between the folded state and the flattened state, the force source can also be an ordinary elastic object or a conventional transmission element, providing that positions of relevant structures do not interfere with the force source, as long as the force source can meet requirement of exerting two fixed forces on the first support plate50under two different states. In some preferred embodiments, the first preload mechanism60includes at least one spring assembly, and each spring assembly includes a spring61and a push pin62. The push pin62is installed on the first support plate50, and the spring61is sleeved on the push pin62and accommodated in the second frame30in a compressed state. That is, in some preferred embodiments, the force source of the first preload force in the first preload mechanism60is the spring61, and the first preload force is an elastic force generated by elastic deformation of the spring61. It can be understood that the force source of the first preload force in the first preload mechanism60can also be other elastic objects in other preferred embodiments, such as a coil spring.

Specifically, in the embodiment, the first support plate50is provided with a guiding slot502, and the push pin62drills through the guiding slot502. Preferably, a length of the guiding slot502is slightly greater than a diameter of the push pin62, so that the push pin62can reciprocate slightly in the guiding slot502along the second direction, so as to improve floatability of the first support plate50.

Specifically, in the embodiment, the second frame30is provided with at least one accommodating slot304, and the spring61is correspondingly accommodated in the accommodating slot304in a compressed state. Specifically, an end of the spring61is abutted against the push pin62, and another end of the spring61is abutted against an inner end surface of the accommodating slot304close to an end of the base13, so that a direction of the first preload force exerted by the spring61on the first support plate50is the second direction. It can be understood that because the first frame20and the second frame30are not directly rotationally connected, but are rotationally connected to the hinge transmission mechanism40, respectively, so as to realize a rotational connection between the two. Therefore, in the folded state, a folded shape similar to “water-drop” at a bending part of the flexible display screen10corresponding to the hinge transmission mechanism40used to connect the first frame20and the second frame30will be undoubtedly formed. The design of the folded shape “water-drop” makes a linear distance from an end part of the flexible display screen10to a bending center (along the second direction) of the flexible display screen10in the folded state less than a linear distance from the end part of the flexible display screen10to the bending center (along the second direction) of the flexible display screen10in the flattened state. Therefore, during a switching process of the display device100between the folded state and the flattened state, values of the first preload force can change with changes of states. Specifically, a value of the first preload force in the flattened state reaches a maximum, and a value of the first preload force in the folded state reaches a minimum.

Preferably, the first preload mechanism60includes two spring assemblies, and the two spring assemblies are symmetrically disposed at edges of the first support plate50close to two opposite sides of the first support plate50, so as to improve balance of the first support plate50under the first preload force.

Preferably, when the display device100is in the flattened state, a side of the first support plate50close to the base13is abutted against the floating plate15. When the display device100is operable in the folded state, the side of the first support plate50close to the base13is separated from the floating plate15. In this way, the preload force of the first support plate50can be further increased in the flattened state, so as to increase tension of the flexible display screen10. It can be understood that the side of the first support plate50close to the base13can also always be abutted against the floating plate15during a switching process of the display device100between the folded state and the flattened state in some embodiments. In some embodiments, the side of the first support plate50close to the base13can always be separated from the floating plate15during the switching process of the display device100between the folded state and the flattened state.

Specifically, the display device100in the embodiment is a preferred structure. In the embodiment, when the display device100switches between the folded state and the flattened state, motion and connection relationships of each structure are described as following.

When the display device100is in the flattened state, the first frame20can be abutted against the second frame30, the hinge transmission mechanism40can be accommodated in the first frame20and the second frame30, and the flexible display screen10is supported on the first support plate50, the floating plate15, and the cover plate14in a plane state. At this time, the spring61has a maximum compression and the first preload force is at a maximum value.

When the device100switches from the flattened state to the folded state, the first frame20and the second frame30rotate relative to the base13and move in opposite directions under an action of an external force until the first frame20and the second frame30shut and are close to each other in a parallel state, in this process:

the first frame20and the second frame30respectively drive the two transmission gears122to rotate, the two transmission gears122respectively drive the two linkage gears123to rotate, and the two linkage gears123are meshed with each other to achieve synchronization and stability of rotation of the first frame20and the second frame30; and

the first frame20and the second frame30respectively drive two ends of the flexible display screen10to move in opposite directions, and the two floating plates15respectively rotate relative to the cover plate14; at a same time, the first sliding element1601moves relative to the first frame20along a direction opposite to the second direction, the second sliding element1602moves relative to the second frame30along the second direction, and the two floating plates15drive a middle part of the flexible display screen10to gradually bend into a “water-drop”; at this time, when the two floating plates15and the cover plate14define a triangular space, the bending part “water-drop” of the flexible display screen10is accommodated in the triangular space; as the middle part of the flexible display screen10is gradually bent, the linear distance from the end part of the flexible display screen10to a center position (along the second direction) gradually decreases, a compression amount of the spring61gradually decreases, the spring61drives the first support plate50to gradually move relative to the first frame20along the second direction, and the first preload force gradually decreases and reaches a minimum when a folding is completed.

When the display device100is fully operable in the folded state, the first frame20and the second frame30shut and are close to each other in a parallel state. The two floating plates15and the cover plate14define a triangular space, the bending part “water-drop” of the flexible display screen10is accommodated in the triangular space, the compression amount of the spring61is at a minimum, and the first preload force is at a minimum.

Motion of each structure when the device100switching from the folded state to the flattened state is opposite to motion of each structure when the device100switching from the flattened state to the folded state, which is not repeated here.

The display device and the folding display module thereof provided by the embodiments of the present disclosure are described in detail. In this paper, specific embodiments are adopted to illustrate a principle and implementation modes of the present disclosure. The description of the above-mentioned embodiments is only used to help understand methods and a core idea of the present disclosure. At the same time, for those skilled in the art, according to the idea of the present disclosure, there will be changes in specific implementation modes and a scope of the present disclosure. In conclusion, contents of the specification should not be interpreted as a limitation of the present disclosure.