Display device

Abstract

This application relates to a display device. The display device has a bending axis and includes a display panel, a support layer, and two cushioning assemblies. The two cushioning assemblies are arranged along the extension direction of the bending axis. Each cushioning assembly includes a first sub-component, a second sub-component, and a connecting strip connecting the first and second sub-components. The connecting strip is located in the edge region of the support layer. The first and second sub-components are configured such that the tension of the connecting strip in a second state is greater than the tension in a first state. By providing two cushioning assemblies on the side of the support layer away from the display panel, corresponding to the edge of the support layer, when the display device is dropped, the connecting strip in the edge region of the support layer is stretched under the impact force. The tension on the connecting strip is greater than the tension of the display device under normal use. The connecting strip can absorb the impact force and prevent the portions of the support layer located on both sides of the bending axis from tearing under opposite forces, thereby improving the drop resistance of the display device.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display device. Background Technology

[0002] Foldable displays meet users' needs for large-screen displays, portability, and split-screen functionality, making them popular with consumers. However, compared to non-foldable displays, foldable displays are more susceptible to damage from drops. This is because when a foldable display lands in its unfolded state, the end that first touches the ground experiences an upward instantaneous velocity, while the other end continues to descend. This creates a pulling force on both sides of the display. Typically, to meet the requirements of folding, the film layers in foldable displays are thinner, resulting in lower tensile strength. The instantaneous force during a drop far exceeds the tensile strength threshold of the foldable display. Therefore, foldable displays are prone to tearing during drops.

[0003] Therefore, there is an urgent need to improve the drop resistance of foldable display products. Summary of the Invention

[0004] This application provides a display device to improve the technical problem of poor drop resistance of foldable display products.

[0005] To achieve the above objectives, this application provides a display device having a bending shaft, the display device comprising:

[0006] Display panel;

[0007] A support layer is disposed on the non-light-emitting side of the display panel;

[0008] Two buffer components are disposed on the side of the support layer away from the display panel and arranged along the extension direction of the bending axis. The buffer components include a first sub-component and a second sub-component located on both sides of the bending axis, and a connecting strip connecting the first sub-component and the second sub-component. The connecting strip is located in the edge region of the support layer. The first sub-component and the second sub-component are configured such that the tension of the connecting strip in the second state is greater than the tension in the first state.

[0009] Optionally, the support layer includes a first support portion and a second support portion disposed on both sides of the first support portion. In a direction parallel to the bending axis, the width of the first support portion is smaller than the width of the second support portion, and the width of the display panel is smaller than or equal to the width of the first support portion.

[0010] The first sub-component is connected to a second support portion, the second sub-component is connected to another second support portion, and the connecting strip is located on the periphery of the first support portion.

[0011] Optionally, the first sub-component includes a boss, and one end of the connecting strip is fixed to the boss;

[0012] The second sub-component includes a pivot shaft configured to drive the connecting belt to wind or release. In the first state, the pivot shaft is configured to be rotatable, and in the second state, the pivot shaft is configured to be non-rotatable.

[0013] Optionally, one end of the rotating shaft is provided with a spring, which is configured to tension the connecting band in the first state and the second state; the other end of the rotating shaft is provided with a locking structure, which is configured to allow the rotating shaft to rotate forward and backward in the first state, and to prevent the rotating shaft from rotating forward or backward in the second state.

[0014] Optionally, the locking structure includes a housing, a blade disposed within the housing, and a non-Newtonian fluid disposed within the housing. The blade is coaxially disposed and fixedly connected to the rotating shaft. The non-Newtonian fluid fills the space within the housing. The blade is in contact with the non-Newtonian fluid. The housing is fixedly connected to the second support portion.

[0015] Optionally, the locking structure includes a cam and a ratchet. The ratchet is sleeved around the periphery of the cam and is fixedly connected to the second support portion. The cam is coaxially arranged with the rotating shaft, and the end of the rotating shaft is provided with a sliding groove for the cam to slide. The sliding groove extends radially along the rotating shaft. The edge of the cam is provided with a protrusion, which engages with the ratchet in either the forward or reverse direction.

[0016] Optionally, the second support portion has a recessed groove on the side surface away from the display panel, and both the first sub-component and the second sub-component are accommodated in the recessed groove, and both ends of the connecting strip are accommodated in the recessed groove.

[0017] Optionally, the surface of the boss away from the display panel does not extend beyond the surface of the second support portion away from the display panel.

[0018] Optionally, the end face area of ​​the boss away from the display panel is greater than the end face area of ​​the boss near the display panel.

[0019] Optionally, the axis of the rotating shaft is parallel to the thickness direction of the second support.

[0020] In the display device of this application embodiment, two buffer components are provided on the side of the support layer away from the display panel, and the buffer components are provided corresponding to the edge of the support layer. When the display device is dropped, the connecting strip in the edge area of ​​the support layer is stretched by the impact force. The tension on the connecting strip is greater than the tension of the display device under normal use. The connecting strip can absorb the impact force and prevent the parts of the support layer located on both sides of the bending axis from tearing after being subjected to opposite forces, thereby improving the drop resistance of the display device.

[0021] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0024] Figure 1 This is a diagram illustrating the damage to a foldable display product when it is dropped while in its unfolded state.

[0025] Figure 2 This is a front view structural diagram of a display device in a flattened state provided in an exemplary embodiment of this disclosure;

[0026] Figure 3 yes Figure 2 A rear view diagram of the display device in the diagram;

[0027] Figure 4 yes Figure 2 A schematic diagram of the folded state of the display device in the image;

[0028] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure at point CC;

[0029] Figure 6 yes Figure 3 Schematic diagram of the cross-sectional structure at point DD;

[0030] Figure 7 yes Figure 6 A top view of the mainspring's structure;

[0031] Figure 8 yes Figure 6A top view schematic diagram of a locking structure;

[0032] Figure 9 yes Figure 6 A top view schematic diagram of another type of locking structure;

[0033] Figure 10 yes Figure 9 A schematic diagram showing the connection between the locking structure and the rotating shaft.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Display device; 1a-Bending shaft; BA-Bending area; NA-Non-bending area;

[0036] 10-Display panel;

[0037] 20 - Support layer; 21 - First support section; 22 - Second support section; 22a - Settling tank;

[0038] 30-Buffer assembly; 31-First sub-component; 311-Boss; 32-Second sub-component; 321-Shaft; 321a-Groove; 322-Spring; 323-Locking structure; 3231-Housing; 3232-Blade; 3233-Non-Newtonian fluid; 3235-Cam; 32351-Thrust; 32352-Connecting end; 3236-Ratchet; 33-Connecting belt. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0040] This application provides a display device 1, such as... Figures 2 to 4 As shown, the display device 1 has a bending shaft 1a. The display device 1 includes a display panel 10, a support layer 20, and two buffer components 30. The support layer 20 is disposed on the non-light-emitting side of the display panel 10. The buffer components 30 are disposed on the side of the support layer 20 away from the display panel 10 and arranged along the extension direction of the bending shaft 1a. The buffer components 30 include a first sub-component 31 and a second sub-component 32 located on both sides of the bending shaft 1a, and a connecting strip 33 connecting the first sub-component 31 and the second sub-component 32. The connecting strip 33 is located in the edge region of the support layer 20. The first sub-component 31 and the second sub-component 32 are configured such that the tension of the connecting strip 33 in the second state is greater than the tension in the first state.

[0041] Display device 1 is a foldable display product. Foldable display products can be inward-folding, outward-folding, or other forms of foldable products. Inward folding means that the display surface folds inward like a book, while outward folding means that the display surface folds outward.

[0042] like Figure 2 and Figure 3 As shown, the bending axis 1a refers to a virtual axis that the display device 1 has when folded, and the bending axis 1a provides a rotation axis for the display panel 10. Both ends of the display panel 10 can rotate around the bending axis 1a, thereby realizing a folded state and a flattened state. In the folded state, the display device 1 is easy to carry; in the flattened state, the display device 1 can provide a larger display surface.

[0043] In some embodiments, the folded and flattened states of the display panel 10 can be achieved through a precise hinge structure, including teardrop hinges, U-shaped hinges, etc. Figure 4 As shown, Figure 4 The image shows the display panel 10 in a teardrop-shaped fold.

[0044] The display panel 10 is a flexible panel. The display panel 10 includes stacked film layers such as a substrate layer, a driving circuit layer, a light-emitting layer, an encapsulation layer, and a touch layer.

[0045] The substrate material can be one of polyimide (PI), polycarbonate (PC), polynorbornene (PNB), and polyethylene terephthalate (PET).

[0046] The driving circuit layer is used to control the display state of the light-emitting units in the light-emitting layer. The driving circuit layer includes gate driving circuitry, etc. It also includes structures such as thin-film transistors, capacitors, and wiring.

[0047] The light-emitting layer is used to emit light. It consists of a stacked anode, a layer of light-emitting material, and a cathode. Holes are injected into the anode, and electrons are injected into the cathode. The holes and electrons recombine in the light-emitting material layer to emit light.

[0048] An encapsulation layer is disposed on the side of the cathode away from the substrate layer. The encapsulation layer can be formed by alternating layers of one or more organic layers and one or more inorganic layers. For example, the organic layer can be a single layer or multiple layers formed from any of polyethylene terephthalate, polyimide, polycarbonate, epoxy resin, polyethylene, and polyacrylate. The inorganic layer can be a single layer or multiple layers of metal oxides or metal nitrides, such as silicon nitride, aluminum oxide, and silicon dioxide.

[0049] The touch layer includes multiple touch electrodes, which are used to acquire the touch position of a finger or other object to enable touch functionality. The touch layer can be self-capacitive touch, mutual-capacitive touch, etc.

[0050] like Figures 2 to 4As shown, the support layer 20 is disposed on the non-light-emitting side of the display panel 10. The light-emitting side of the display panel 10 refers to the side of the display panel 10 used for viewing, while the non-light-emitting side is the back side of the light-emitting side. The support layer 20 has a certain rigidity, which can provide back support and protection for the display panel 10, making the back of the display panel 10 less susceptible to impact damage.

[0051] In some embodiments, the support layer 20 is made of a metallic material, such as stainless steel or titanium alloy. Metallic materials have high strength and rigidity, providing a stable support structure for the foldable display product. Simultaneously, the support layer 20 helps disperse stress generated during folding, preventing stress concentration on the display panel 10 or other vulnerable areas, reducing the risk of creases and damage to the display panel 10, and extending the product's lifespan.

[0052] like Figures 2 to 4 As shown, the buffer assembly 30 is disposed on the side of the support layer 20 away from the display panel 10. By disposing of the buffer assembly 30 on the back of the support layer 20, the support layer 20 can effectively maintain the relative position of the display panel 10 and the buffer assembly 30 during folding and unfolding, preventing the display panel 10 from deforming, bending excessively, or the buffer assembly 30 from shifting due to external forces.

[0053] like Figure 3 As shown, there are at least two buffer components 30, which are arranged along the extension direction of the bending shaft 1a. The first sub-component 31 and the second sub-component 32 are respectively located on both sides of the bending shaft 1a, and the connecting strip 33 connects the first sub-component 31 and the second sub-component 32. That is to say, the connecting strip 33 extends in a direction perpendicular to the bending shaft 1a, and the two ends of the connecting strip 33 are respectively located on both sides of the bending shaft 1a.

[0054] In some embodiments, the first sub-component 31 and the second sub-component 32 are arranged in a direction perpendicular to the bending axis 1a, thereby reducing the space occupied by the first sub-component 31 and the second sub-component 32.

[0055] The connecting belt 33 is made of a high-tensile-strength material, such as carbon fiber or aramid fiber. When the connecting belt 33 is subjected to tension, the high-tensile-strength material is less prone to breakage. The first sub-component 31 and the second sub-component 32 are respectively connected to one end of the connecting belt 33. Tension in the connecting belt 33 is generated by controlling the first sub-component 31 and the second sub-component 32.

[0056] In some embodiments, one end of the connecting strip 33 can be fixedly connected to the first sub-component 31, which is fixed to the support layer 20; the second sub-component 32 can be a movable end, which can realize the winding and unwinding of the connecting strip 33. When the number of turns of the connecting strip 33 increases, the connecting strip 33 is tightened, thereby generating greater tension.

[0057] like Figure 1 As shown, Figure 1 This is a diagram illustrating the damage to a foldable display product when it is dropped from its unfolded state. When a foldable display product falls, the end in contact with the ground experiences an instantaneous upward velocity V, while the other end, not in contact with the ground, maintains a downward velocity V. Because the velocities of the two ends are not in the same direction, the foldable display product is subjected to pulling forces in different directions, resulting in tearing.

[0058] In the embodiments of this application, since the connecting strap 33 is located at the edge of the support layer 20, when the display device 1 falls in a flattened state, the edge of the support layer 20 is impacted. The portion of the support layer 20 in contact with the ground experiences an instantaneous upward velocity, while the end of the support layer 20 located away from the ground along the bending axis 1a experiences a downward velocity, and the support layer 20 is subjected to forces in opposite directions. At this time, the connecting strap 33 located at the edge of the support layer 20 is tightened by this force, generating greater tension, thereby preventing the force from acting on the support layer 20 or the display panel 10 and causing damage. In other words, the connecting strap 33 can balance the impact force on the support layer 20 by stretching and tightening, thereby preventing the impact force from acting directly on the support layer 20 or the display panel 10.

[0059] The first state can be the normal operating state of the display device 1, which includes the folded state and the flattened state of the display device 1. In the normal operating state, the connecting strap 33 is taut, and at this time the connecting strap 33 is subjected to a small tension. The second state can be the abnormal operating state of the display device 1, such as the drop state. When the display device 1 is dropped in the flattened state, the connecting strap 33 is stretched instantaneously, generating a larger tension to counteract the impact force on the display device 1.

[0060] It should be noted that the connecting belt 33 is always taut in both states. In the first state, the tension of the connecting belt 33 is relatively low, while in the second state, the tension is relatively high. Since the connecting belt 33 is already taut in the first state, when the display device 1 falls, the connecting belt 33 can be stretched further instantaneously, thereby providing greater tension instantly. This prevents the connecting belt 33 from needing to reach a taut state for too long, which could damage the support layer 20.

[0061] Optionally, such as Figure 3 and Figure 4As shown, the support layer 20 includes a first support portion 21 and a second support portion 22 disposed on both sides of the first support portion 21. In the direction parallel to the bending axis 1a, the width of the first support portion 21 is smaller than the width of the second support portion 22, and the width of the display panel 10 is smaller than or equal to the width of the first support portion 21. The first sub-component 31 is connected to one second support portion 22, the second sub-component 32 is connected to another second support portion 22, and the connecting strip 33 is located on the periphery of the first support portion 21.

[0062] The support layer 20 includes a first support portion 21 and second support portions 22 disposed on both sides of the first support portion 21, and the first support portion 21 and the second support portion 22 are connected together. It should be noted that the first support portion 21 and the second support portion 22 are integrally formed, meaning that the first support portion 21 and the second support portion 22 can be made of the same material. In the direction parallel to the bending axis 1a, the width of the first support portion 21 is smaller than the width of the second support portion 22, meaning that the edge of the first support portion 21 is concave relative to the edge of the second support portion 22.

[0063] In some embodiments, the distance between the edge of the first support portion 21 and the edge of the second support portion 22 is 0.2 mm to 0.5 mm, that is, the distance between the recess of the edge of the first support portion 21 and the edge of the second support portion 22 is 0.2 mm to 0.5 mm. For example, the distance between the edge of the first support portion 21 and the edge of the second support portion 22 is 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, etc.

[0064] like Figure 4 As shown, the first support portion 21 can correspond to the bending area BA of the display device 1, and the second support portion 22 can correspond to the non-bending area NA of the display device 1. To improve the bending performance of the display device 1, the first support portion 21 can be provided with a pattern. The pattern includes perforations, blind holes, etc. By forming perforations and / or blind holes in the first support portion 21, the elastic modulus of the support layer 20 can be reduced, making the first support portion 21 easier to bend and reducing the stress on the first support portion 21 during bending.

[0065] In some embodiments, such as Figure 4As shown, the first support portion 21 may have perforated holes and blind holes located on both sides of the perforated holes. The perforated holes and blind holes are arranged in a direction perpendicular to the bending axis 1a. A perforated hole is a through hole that penetrates the first support portion 21, that is, the depth of the perforated hole is equal to the thickness of the first support portion 21. A blind hole is a hole that does not penetrate the first support portion 21, that is, the depth of the blind hole is less than the thickness of the first support portion 21. Through the above arrangement, the elastic modulus near the bending axis 1a can be made smaller than the elastic modulus far from the bending axis 1a, and the mechanical strength of the bending region BA far from the bending axis 1a is greater than the mechanical strength of the bending region BA near the bending axis 1a, thereby giving the support layer 20 better bending performance and higher mechanical strength.

[0066] like Figure 2 and Figure 3 As shown, in the direction parallel to the bending axis 1a, the width of the display panel 10 is equal to the width of the first support portion 21. That is to say, the edge of the display panel 10 is concave relative to the edge of the second support portion 22, and the edge of the display panel 10 is flush with the edge of the first support portion 21.

[0067] In other embodiments, the width of the display panel 10 is smaller than the width of the first support portion 21, and the orthographic projection of the display panel 10 onto the support layer 20 is located within the support layer 20. With this arrangement, the first support portion 21 can extend beyond the edge of the display panel 10, thus better protecting the edge area of ​​the display panel 10.

[0068] The edge of the support layer 20 protrudes beyond the edge of the display panel 10. When the display device 1 falls, the support layer 20 contacts the ground before the display panel 10, thereby protecting the display panel 10 from the direct impact of the force.

[0069] The first sub-component 31 is connected to a second support portion 22, and the second sub-component 32 is connected to another second support portion 22. The connecting strip 33 is located around the periphery of the first support portion 21. This means that one end of the connecting strip 33 can be connected to the edge of the second support portion 22 on one side of the bending shaft 1a, and the other end of the connecting strip 33 can be connected to the edge of the second support portion 22 on the other side of the bending shaft 1a. The edge of the second support portion 22 is the portion of the second support portion 22 that extends beyond the first support portion 21. The connecting strip 33 can be located outside the edge of the first support portion 21, but the connecting strip 33 does not extend beyond the edge of the second support portion 22.

[0070] When the display device 1 falls in a flattened state, the forces acting on both sides of the bending shaft 1a are directed in opposite directions, making the support layer 20 prone to tearing. By providing a connecting strap 33 around the first support portion 21, the impact force on the display device 1 can be directly applied to the connecting strap 33, and the tension generated by the connecting strap 33 can offset the impact force, thereby preventing the display device 1 from being damaged by impact.

[0071] Optionally, such as Figure 3 , Figure 5 and Figure 6 As shown, the first sub-component 31 includes a boss 311, and one end of the connecting belt 33 is fixed to the boss 311; the second sub-component 32 includes a rotating shaft 321, which is configured to drive the connecting belt 33 to wind or release; in the first state, the rotating shaft 321 is configured to be rotatable; in the second state, the rotating shaft 321 is configured to be non-rotatable.

[0072] like Figure 5 As shown, the first sub-component 31 includes a boss 311, which can be connected to the second support portion 22. One end of the connecting strap 33 is fixed to the boss 311, that is, one end of the connecting strap 33 is fastened to the boss 311.

[0073] In some embodiments, the boss 311 may be integrally formed with the second support portion 22, that is, the boss 311 may be made of the same material as the second support portion 22, and the boss 311 may be formed by etching the second support portion 22.

[0074] like Figure 6 As shown, the second component 32 includes a rotating shaft 321, which is rotatable about its axis. A connecting belt 33 can be wound around the rotating shaft 321. When the rotating shaft 321 rotates in one direction, the connecting belt 33 is wound around the rotating shaft 321, and the tension of the connecting belt 33 increases; when the rotating shaft 321 rotates in the opposite direction, the connecting belt 33 is released, and the tension of the connecting belt 33 decreases.

[0075] In the first state, the transition is configured to be rotatable. For example, when the display device 1 is folded, the connecting strip 33 is wound around the pivot 321, and the tension of the connecting strip 33 increases; when the display device 1 is unfolded, the connecting strip 33 is released, and the tension of the connecting strip 33 decreases.

[0076] In the second state, the pivot 321 is configured to be non-rotatable. For example, when the display device 1 falls in its flattened state, the support layer 20 is momentarily subjected to force, tending to pull on the support layer 20. Since the pivot 321 is configured to be non-rotatable, the connecting strap 33 is tightened, and the tension of the connecting strap 33 counteracts the impact force, thereby protecting the support layer 20 from being pulled by the impact. After the impact ends, the connecting strap 33 is released, returning the device to the first state from the second state.

[0077] Optionally, such as Figures 6 to 9As shown, one end of the rotating shaft 321 is provided with a spring 322, which is configured to tension the connecting belt 33 in a first state and a second state; the other end of the rotating shaft 321 is provided with a locking structure 323, which is configured to allow the rotating shaft 321 to rotate in both forward and reverse directions in the first state, and to prevent the rotating shaft 321 from rotating in either the forward or reverse direction in the second state.

[0078] like Figure 7 As shown, the mainspring 322 can be a helical spring made of metal. As an elastic element, the mainspring 322 can store and release elastic potential energy. Specifically, when the shaft 321 rotates, the mainspring 322 is driven to twist by the shaft 321, causing elastic deformation. The work done by the external force is converted into and stored as elastic potential energy in the mainspring 322. When the external force is removed, the mainspring 322 gradually releases the stored elastic potential energy as it returns to its original state, causing the shaft 321 to rotate in the opposite direction. Through this configuration, on the one hand, the mainspring 322 can keep the connecting belt 33 taut in both the first and second states, meaning the connecting belt 33 has tension; on the other hand, after the impact, the mainspring 322 can release the stored elastic potential energy as mechanical energy, causing the shaft 321 to rotate and the connecting belt 33 to release, returning from the second state to the first state.

[0079] like Figure 6 As shown, the pivot 321 can be fixedly connected to one end of the spring 322, and the fixed connection can be made by welding or the like. A locking structure 323 is provided at the other end of the pivot 321. The locking structure 323 is configured to allow the pivot 321 to rotate forward and backward in a first state; and to prevent the pivot 321 from rotating forward or backward in a second state. That is, in the first state, when the display device 1 is folded, the locking structure 323 allows the pivot 321 to rotate forward and backward; when the display device 1 is unfolded, the locking structure 323 allows the pivot 321 to rotate forward and backward. In the second state, when the display device 1 falls in its unfolded state, the locking structure 323 locks, preventing the connecting strap 33 from being released, thereby maintaining greater tension on the connecting strap 33 to counteract the impact force during the fall.

[0080] Optionally, such as Figure 8 As shown, in some embodiments, the locking structure 323 includes a housing 3231, a blade 3232 disposed within the housing 3231, and a non-Newtonian fluid 3233 disposed within the housing 3231. The blade 3232 is coaxially disposed and fixedly connected to the rotating shaft 321. The non-Newtonian fluid 3233 fills the space within the housing 3231. The blade 3232 is in contact with the non-Newtonian fluid 3233. The housing 3231 is fixedly connected to the second support portion 22.

[0081] like Figure 8 As shown, the housing 3231 has an internal cavity containing a blade 3232 and a non-Newtonian fluid 3233. The housing 3231 is located at the end of a rotating shaft 321, and the blade 3232 is located at the end of the rotating shaft 321. The blade 3232 is coaxially arranged with the rotating shaft 321, and the rotating shaft 321 can drive the blade 3232 to rotate.

[0082] like Figure 6 As shown, the housing 3231 is fixedly connected to the second support 22, that is, the housing 3231 does not rotate with the shaft 321. When the blade 3232 rotates, the blade 3232 shears the non-Newtonian fluid 3233 inside the housing 3231.

[0083] Non-Newtonian fluid 3233 can be a shear-thickening fluid. When subjected to an instantaneous external force, the viscosity of non-Newtonian fluid 3233 increases rapidly, becoming more viscous, and may even exhibit solid-like properties. When an external force is applied slowly, the particles in non-Newtonian fluid 3233 have sufficient time to adjust their positions, resulting in relatively small structural changes. Therefore, the increase in fluid viscosity is not significant, and it can basically maintain its original fluidity, unlike when subjected to instantaneous force, it does not become hard rapidly.

[0084] In some embodiments, the non-Newtonian fluid 3233 can be a mixture, wherein the solute can be starch particles or nano-silica, etc., and the solvent can be water or polyethylene glycol, etc., but is not limited thereto.

[0085] like Figure 8 As shown, the blade 3232 has a plate-like structure. One end of the blade 3232 is mounted on the rotating shaft 321, while the other end extends outward, forming a certain length and width to achieve effective contact with the non-Newtonian fluid 3233. When the blade 3232 rotates with the rotating shaft 321, it pushes or stirs the non-Newtonian fluid 3233.

[0086] In the first state, the blade 3232 rotates slowly, stirring the non-Newtonian fluid 3233. In the second state, the display device 1 falls from its flattened state. Under the impact force, the connecting belt 33 tightens instantly, causing the rotating shaft 321 to rotate. The blade 3232 is suddenly accelerated by the rotating shaft 321, shearing the non-Newtonian fluid 3233 within the housing 3231. The non-Newtonian fluid 3233 experiences instantaneous force, causing its viscosity to increase rapidly, becoming more viscous, and even exhibiting solid-like properties. This hinders the rotation of the blade 3232, locking the rotating shaft 321. The connecting belt 33 remains taut to counteract the instantaneous impact force, thus protecting the support layer 20 and the display panel 10 from impact damage. After the impact, the viscosity of the non-Newtonian fluid 3233 decreases, reducing the resistance experienced by the blade 3232. The spring 322 drives the rotating shaft 321 to rotate, releasing the connecting belt 33 and returning to the first state.

[0087] Alternatively, in other embodiments, such as Figure 9 and Figure 10 As shown, the locking structure 323 includes a cam 3235 and a ratchet 3236. The ratchet 3236 is sleeved on the periphery of the cam 3235 and is fixedly connected to the second support part 22. The cam 3235 is coaxially arranged with the rotating shaft 321, and the end of the rotating shaft 321 is provided with a slide groove 321a for the cam 3235 to slide. The slide groove 321a extends radially along the rotating shaft 321. The edge of the cam 3235 is provided with a protrusion 32351. In one of the forward or reverse directions, the protrusion 32351 engages with the ratchet 3236.

[0088] Figure 9 (a) shows the structure of cam 3235 and ratchet 3236 in the first state; (b) shows the structure of cam 3235 and ratchet 3236 in the second state. Cam 3235 is coaxially arranged with rotating shaft 321, and rotating shaft 321 can drive cam 3235 to rotate.

[0089] like Figure 10 As shown, the end of the rotating shaft 321 is provided with a radially extending slide groove 321a, and the cam 3235 includes a connecting end 32352, which is fitted into the slide groove 321a and can slide along the slide groove 321a.

[0090] When the display device 1 falls in its flattened state, the connecting belt 33 is tightened, causing the rotating shaft 321 to rotate instantaneously. Due to centrifugal force, the cam 3235 slides along the slide groove 321a. As shown in (b), at this time, the axis of the cam 3235 deviates from the axis of the rotating shaft 321, and the protrusion 32351 of the cam 3235 engages in the ratchet 3236, locking the cam 3235. The tension of the connecting belt 33 increases, counteracting the kinetic energy transmitted by the support layer 20. The support layer 20 and the display panel 10 are not subjected to impact force. After the impact, the spring 322 is released, and the display device 1 returns to its first state.

[0091] Optionally, such as Figures 3 to 6 As shown, the second support 22 has a recessed groove 22a on the side surface away from the display panel 10. The first sub-component 31 and the second sub-component 32 are both accommodated in the recessed groove 22a, and both ends of the connecting strap 33 are accommodated in the recessed groove 22a.

[0092] like Figure 5 and Figure 6 As shown, in order to avoid the first sub-component 31 and the second sub-component 32 occupying additional space, a groove 22a can be provided on the surface of the second support 22. The depth of the groove 22a is less than the thickness of the second support 22, and the first sub-component 31 and the second sub-component 32 are accommodated in the groove 22a.

[0093] In some embodiments, the thickness of the support layer 20 may be greater than or equal to 0.15 mm. The depth of the settling tank 22a may be from 0.06 mm to 0.075 mm. The depth of the settling tank 22a may be set as needed.

[0094] like Figure 3 , Figure 5 and Figure 6 As shown, the two ends of the connecting belt 33 are connected to the first sub-component 31 and the second sub-component 32 respectively, and the two ends of the connecting belt 33 are housed within the sink 22a. That is to say, the sink 22a has an opening facing the bending shaft 1a, and the connecting belt 33 passes through the opening and connects to the first sub-component 31 and the second sub-component 32 within the sink 22a.

[0095] Optionally, such as Figure 5 As shown, the surface of the boss 311 away from the display panel 10 does not extend beyond the surface of the second support portion 22 away from the display panel 10. In other words, the surface of the boss 311 does not extend beyond the surface of the second support portion 22. Through the above arrangement, interference between the boss 311 and other structures can be avoided.

[0096] Optionally, such as Figure 5 As shown, the end face area of ​​the boss 311 furthest from the display panel 10 is larger than the end face area of ​​the boss 311 closest to the display panel 10. This means that the boss 311 can be bolt-shaped, with a larger end face area at the top of the boss 311 near the top of the recess 22a and a smaller end face area at the bottom of the recess 22a. This design makes it easier for the connecting strap 33 to be fitted onto the boss 311 and prevents the connecting strap 33 from detaching from the boss 311.

[0097] Optionally, such as Figure 6 As shown, the axis of the rotating shaft 321 is parallel to the thickness direction of the second support portion 22. This arrangement makes it easier to fix the second sub-component 32.

[0098] In this embodiment, the display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0099] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0100] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0101] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0102] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display device, characterized in that, The display device has a bending shaft, and the display device includes: Display panel; A support layer is disposed on the non-light-emitting side of the display panel; Two buffer components are disposed on the side of the support layer away from the display panel and arranged along the extension direction of the bending axis. The buffer components include a first sub-component and a second sub-component located on both sides of the bending axis, and a connecting strip connecting the first sub-component and the second sub-component. The connecting strip is located in the edge region of the support layer. The first sub-component and the second sub-component are configured such that the tension of the connecting strip in the second state is greater than the tension in the first state.

2. The display device according to claim 1, characterized in that, The support layer includes a first support portion and a second support portion disposed on both sides of the first support portion. In a direction parallel to the bending axis, the width of the first support portion is smaller than the width of the second support portion, and the width of the display panel is smaller than or equal to the width of the first support portion. The first sub-component is connected to a second support portion, the second sub-component is connected to another second support portion, and the connecting strip is located on the periphery of the first support portion.

3. The display device according to claim 2, characterized in that, The first sub-component includes a boss, and one end of the connecting strip is fixed to the boss; The second sub-component includes a pivot shaft configured to drive the connecting belt to wind or release. In the first state, the pivot shaft is configured to be rotatable, and in the second state, the pivot shaft is configured to be non-rotatable.

4. The display device according to claim 3, characterized in that, One end of the rotating shaft is provided with a spring, which is configured to tension the connecting band in the first state and the second state. The other end of the rotating shaft is provided with a locking structure, which is configured to allow the rotating shaft to rotate forward and backward in the first state, and to prevent the rotating shaft from rotating forward or backward in the second state.

5. The display device according to claim 4, characterized in that, The locking structure includes a housing, a blade disposed within the housing, and a non-Newtonian fluid disposed within the housing. The blade is coaxially disposed and fixedly connected to the rotating shaft. The non-Newtonian fluid fills the space within the housing. The blade is in contact with the non-Newtonian fluid. The housing is fixedly connected to the second support portion.

6. The display device according to claim 4, characterized in that, The locking structure includes a cam and a ratchet. The ratchet is sleeved around the periphery of the cam and is fixedly connected to the second support. The cam is coaxially arranged with the rotating shaft, and the end of the rotating shaft is provided with a sliding groove for the cam to slide. The sliding groove extends radially along the rotating shaft. The edge of the cam is provided with a protrusion, which engages with the ratchet in either the forward or reverse direction.

7. The display device according to any one of claims 3 to 6, characterized in that, The second support portion has a recessed groove on the side surface away from the display panel, and both the first sub-component and the second sub-component are accommodated in the recessed groove, and both ends of the connecting strip are accommodated in the recessed groove.

8. The display device according to claim 7, characterized in that, The surface of the boss away from the display panel does not extend beyond the surface of the second support portion away from the display panel.

9. The display device according to claim 8, characterized in that, The end face area of ​​the protrusion furthest from the display panel is greater than the end face area of ​​the protrusion closest to the display panel.

10. The display device according to claim 7, characterized in that, The axis of the rotating shaft is parallel to the thickness direction of the second support.

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