CN115116337A

CN115116337A - Supporting assembly and display device

Info

Publication number: CN115116337A
Application number: CN202210876441.2A
Authority: CN
Inventors: 王亚玲; 张方; 李政阳; 张雷超
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-09-27

Abstract

The application provides a supporting component and a display device, the supporting component is provided with a flattening state, a first bending state and a second bending state, the supporting component comprises a supporting piece and first tooth parts, the first tooth parts are arranged on one side of the supporting piece in the thickness direction, in the flattening state, a plurality of first tooth parts extend in the first direction and are arranged in parallel in the second direction, the thickness direction, the first direction and the second direction are intersected in pairs, a first avoidance port is formed between every two adjacent first tooth parts, the supporting piece points to the direction of the first tooth parts, and the sectional area of each first avoidance port in the direction perpendicular to the thickness direction is increased progressively; in the first bending state, the distance between two adjacent side surfaces of at least two adjacent first tooth parts is smaller than that in the flattening state; in the second bending state, the first tooth is located on the side of the support element facing away from the second bending center. The application provides a supporting component and display device can reduce the risk that the supporting component produced fatigue damage because of in relapseing then with the inflection, improves life.

Description

Supporting assembly and display device

Technical Field

The application relates to the technical field of display, in particular to a supporting assembly and a display device.

Background

At present, the larger the size of a display screen of the mobile terminal is, the larger the size of the mobile terminal is, and the large-size mobile terminal is inconvenient to carry. With the increasing progress and innovation of science and technology, the flexible screen has been broken through and succeeded, electronic devices using the flexible screen will increasingly enter the living environment of people, and the demand and desire of people for large-screen portable electronic devices are increasingly strong.

With the development of flexible screen technology, bendable display devices such as mobile phones and flat panels have come into force. The bendable display device has two states of inward bending and outward bending. In the process that display device carries out the infolding respectively and rolls over outward, be used for supporting the supporting component of display panel can bear two-way bending load, receive tensile stress and compressive stress repeatedly, so, along with the increase of display device infolding and folding over the number of times, the easy fatigue damage of supporting component and inefficacy.

Disclosure of Invention

The application provides a supporting component and a display device, which aim to improve the problem of fatigue damage of the supporting component.

In a first aspect, an embodiment of the present application provides a support assembly, which has a flattening state, a first bending state, and a second bending state, and includes a support member and first tooth portions, where the first tooth portions are disposed on one side of the support member along a thickness direction, and in the flattening state, a plurality of first tooth portions extend along the first direction and are arranged side by side along the second direction, the thickness direction, the first direction, and the second direction intersect each other, a first avoidance port is disposed between two adjacent first tooth portions, and the support member points to the direction of the first tooth portions, and a sectional area of the first avoidance port increases progressively along a direction perpendicular to the thickness direction; in a first bending state, the first tooth parts are positioned on one side of the support part facing a first bending center, the first bending center is parallel to the first direction, and the distance between two adjacent side surfaces of at least two adjacent first tooth parts is smaller than that in a flattening state; in the second bending state, the first tooth part is positioned on one side of the support part, which faces away from a second bending center, and the second bending center is parallel to the first direction.

In some embodiments, the first tooth and the support are integrally provided.

In some embodiments, the first direction, the second direction, and the thickness direction are perpendicular two by two.

In some embodiments, the material of the support comprises at least one of stainless steel and a titanium alloy.

In some embodiments, the first tooth has a dimension h1 and the support has a dimension h2, 1/3 ≦ h1/h2 ≦ 5/3 in the thickness direction.

In some embodiments, in the first bending state, the support assembly has a first extension portion, a second extension portion, and a bending portion connecting the first extension portion and the second extension portion, and the bending portion is semicircular; the adjacent two side faces of every two adjacent first tooth parts of the bending part are mutually attached.

In some embodiments, in the flattened state, the first avoidance orifice is triangular in cross-section perpendicular to the first direction.

In some embodiments, a cross-section of the first avoidance opening along a direction perpendicular to the first direction is an isosceles triangle.

In some embodiments, in the flattened state, in a cross section perpendicular to the third direction, the plurality of first teeth are equal in size in the second direction and are arranged at equal intervals.

In some embodiments, the minimum radius of the bending part is R1, the number of the first teeth of the bending part is n, the plurality of first teeth have the same size along the bending direction, and n is a positive integer greater than or equal to 2; in the flattened state, the minimum dimension s1 of the first tooth part along the second direction satisfies: s1 is less than or equal to pi R1/n.

In some embodiments, s1 ═ R1/n.

In some embodiments, a dimension of the first tooth portion in the thickness direction is h1, and in the flattened state, a maximum dimension s2 of the first tooth portion in the second direction satisfies: s2 is less than or equal to pi (R1+ h 1)/n.

In some embodiments, it is preferred that s2 ═ pi (R1+ h 1)/n.

In some embodiments, in the flattened state, the side surface of the first tooth part on the side close to the first avoidance opening is planar, and the included angle α between the adjacent two side surfaces of two adjacent first tooth parts satisfies: alpha is more than or equal to arctan (2 n/pi).

In some embodiments, α ═ arctan (2n/π).

In some embodiments, the support assembly further comprises a second tooth portion, the second tooth portion being disposed on a side of the support member facing away from the first tooth portion; in a flattening state, the plurality of second tooth parts extend along the first direction and are arranged in parallel along the second direction, a second avoidance port is arranged between every two adjacent second tooth parts and points to the direction of the second tooth parts from the supporting part, and the sectional area of each second avoidance port along the direction vertical to the thickness direction is increased progressively; in the second bending state, the second tooth part is positioned on one side of the supporting part close to the second bending center, and the distance between two adjacent side surfaces of at least two adjacent second tooth parts is smaller than that in the flattening state.

In some embodiments, the orthographic projection of the first avoidance opening on the support and the orthographic projection of the second avoidance opening on the support are arranged in a staggered manner along the thickness direction.

In some embodiments, the support member has a dimension h2 and the second tooth has a dimension h3, 2/3 ≦ h3/h2 ≦ 10/3 in the thickness direction.

In some embodiments, the support and the second tooth are integrally formed.

In a second aspect, an embodiment of the present application provides a display device, including the support assembly and the flexible display panel provided in any of the above embodiments, where the flexible display panel is disposed on one side of the support assembly along a thickness direction.

The supporting component and the display device provided by the embodiment of the application, it has first tooth portion to set up the supporting component, and set up and have first dodge the mouth between two adjacent first tooth portions, and by the directional direction of first tooth portion of support piece, first dodge the mouth and increase progressively along the sectional area of perpendicular to thickness direction, then in the in-process that the supporting component converts the flattening state into first state of bending, can reduce the compressive stress that the position of the supporting component that first tooth portion corresponds bore, and in the in-process that the supporting component converts the flattening state into the second state of bending, can reduce the tensile stress that the position of the supporting component that first tooth portion corresponds bore. Therefore, the risk of fatigue damage caused by repeated inward folding and outward folding of the supporting component can be reduced, and the service life of the supporting component is prolonged.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

FIG. 1 is a front view of a support assembly provided by an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a support assembly in a first bending state according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of another support assembly provided in the embodiments of the present application in a flattened state;

fig. 5 is a schematic structural diagram of another support assembly provided in the embodiment of the present application in a first bending state;

fig. 6 is a schematic structural diagram of a support assembly in a second bending state according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present application.

Description of reference numerals:

100. a support assembly; 100a, a first extension; 100b a second extension; 100c, a bending part; 110. a support member; 120. a first tooth portion; 120a, a first avoidance port; 130. a second tooth portion; 130a, a second avoidance port;

AA1, first bend center; AA2, second center of curvature;

x, a first direction; y, a second direction; z, thickness direction;

200. a flexible display panel;

10. a display device.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof. In the drawings and the following description, at least some well-known structures and techniques have not been shown to avoid unnecessarily obscuring the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Further, the size and thickness of each configuration shown in the drawings are arbitrarily illustrated for understanding and ease of description, but the present inventive concept is not limited thereto. In the figures, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. In the drawings, the thickness of some of the layers and regions are exaggerated for better understanding and ease of description.

It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Further, throughout the specification, the word "on" a target element means being positioned above or below the target element, and does not necessarily mean being positioned "at the upper side" based on the direction of gravity.

Furthermore, unless explicitly described to the contrary, the word "comprising" will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

On a foldable display device such as a mobile phone and a tablet personal computer, a support component is arranged to be connected with a flexible display panel so as to realize inward folding and outward folding of the flexible display device. During the inward folding process of the flexible display device, one side of the support component facing the display panel and one side of the support component departing from the display panel are respectively subjected to compressive stress and tensile stress. And in the process of folding the flexible display device outwards, one side of the support component facing the display panel and the side of the support component departing from the display panel are respectively subjected to tensile stress and compressive stress. That is, during repeated folding in and folding out of the flexible display device, both sides of the support assembly are subjected to alternating tensile and compressive stresses, respectively. Therefore, along with the increase of the inward folding times and the outward folding times of the flexible display device, the supporting component is subjected to larger fatigue load, and the structural strength of the supporting component is seriously influenced.

Embodiments of the support assembly and the display device are described below with reference to the accompanying drawings. The display device provided in the embodiment of the present application may be an Organic Light Emitting Diode (OLED) display device.

Fig. 1 shows a schematic structural diagram of a support assembly 100 provided by an embodiment of the present application, fig. 2 shows a sectional structural diagram of fig. 1 along a-a, and fig. 3 shows a schematic structural diagram of the support assembly 100 provided by an embodiment of the present application in a first bending state.

As shown in fig. 1 to 3, a support assembly 100 provided according to an embodiment of the present application has a flattened state, a first bent state, and a second bent state. The supporting assembly 100 includes a supporting member 110 and a first tooth portion 120, the first tooth portion 120 is disposed on one side of the supporting member 110 along a thickness direction Z, and in a flattened state, a plurality of the first tooth portions 120 extend along a first direction X and are arranged in parallel along a second direction Y, and the thickness direction Z, the first direction X and the second direction Y intersect each other two by two. A first avoidance hole 120a is formed between two adjacent first teeth 120, and a cross-sectional area of the first avoidance hole 120a increases along a direction perpendicular to the thickness direction Z from the support 110 to the first teeth 120. In the first bending state, the first teeth 120 are located on one side of the support 110 facing the first bending center AA1, the first bending center AA1 is parallel to the first direction X, and a distance between two adjacent side surfaces of at least two adjacent first teeth 120 is smaller than a distance in the flattened state.

It will be appreciated that the first bend center AA1 is: in the first bending state, the arc region of the support member 100 corresponds to the center of curvature. The second bending center is: in the second bending state, the arc region of the support member 100 corresponds to the center of curvature.

The sectional area of the first avoiding opening 120a increases in a direction perpendicular to the thickness direction Z from the support 110 toward the first tooth portion 120, and the size of the first avoiding opening 120a increases in the second direction Y from the support 110 toward the first tooth portion 120.

When the support member 110 points to the first tooth portion 120, the sectional area of the first avoiding opening 120a increases along the direction perpendicular to the thickness direction Z, and then the support member 110 points to the first tooth portion 120, the size of the opening of the first avoiding opening 120a may gradually increase, so that the included angle between two adjacent side surfaces of two adjacent first tooth portions 120 gradually decreases in the process of converting the support assembly 100 from the flat state to the first bending state.

Optionally, any two of the first direction X, the second direction Y and the thickness direction Z may be perpendicular to each other, or two of the first direction X, the second direction Y and the thickness direction Z are perpendicular to each other, or none of the first direction X, the second direction Y and the thickness direction Z is perpendicular to each other, which is not limited herein.

Specifically, the first bending state and the second bending state are opposite in bending direction. Because the first avoiding opening 120a is formed between two adjacent first tooth portions 120 in the flat state, at least a part of the first avoiding opening 120a is reduced until the first bending state is reached in the process that the support assembly 100 is converted from the flat state to the first bending state, the position corresponding to the first avoiding opening 120a is reduced to the minimum, two adjacent side surfaces of two adjacent first tooth portions 120 are abutted, and thus, the existence of the first avoiding opening 120a can reduce the compressive stress between the first tooth portions 120 in the first bending state.

In the process of converting the support assembly 100 from the flat state to the second bent state, the distance between the first teeth 120 is gradually increased, and the first avoiding opening 120a is gradually increased, so that the tensile stress borne by the first teeth 120 in the second bent state is reduced by the presence of the first avoiding opening 120 a.

Alternatively, in the first bent state, the distance between two adjacent side surfaces of at least two adjacent first teeth 120 is smaller than the distance in the flat state, that is, the distance between two adjacent first teeth 120 in the first bent state is smaller than the distance between two adjacent side surfaces in the flat state. During the process from the flat state to the first bent state, at least two adjacent first teeth 120 approach each other until the first bent state. In the first bent state, adjacent two side surfaces of at least two adjacent first teeth 120 may or may not contact each other. In an embodiment where two adjacent side surfaces of two adjacent first teeth 120 contact each other, the side surfaces of two adjacent first teeth 120 may be in line contact or in surface contact, and two adjacent side surfaces may only partially abut against each other or two adjacent side surfaces may completely abut against each other.

Alternatively, two adjacent side surfaces of two adjacent first tooth portions 120 may be a plane surface or a curved surface, which may be selected according to actual requirements.

Alternatively, two adjacent first teeth 120 may be adjacent to each other or may be spaced apart from each other. The plurality of first teeth 120 may be arranged at equal intervals or may be arranged at unequal intervals.

In the support assembly 100 provided by the embodiment of the application, by providing the first tooth portions 120, and providing the first avoidance ports 120a between two adjacent first tooth portions 120, and pointing the support member 110 to the direction of the first tooth portions 120, the sectional areas of the first avoidance ports 120a along the direction perpendicular to the thickness direction Z are gradually increased, so that in the process of converting the support assembly 100 from the flat state to the first bending state, the compressive stress borne by the positions of the support assemblies 100 corresponding to the first tooth portions 120 can be reduced, and in the process of converting the support assembly 100 from the flat state to the second bending state, the tensile stress borne by the positions of the support assemblies 100 corresponding to the first tooth portions 120 can be reduced. Thus, the risk of fatigue damage to the support assembly 100 due to repeated inflections can be reduced.

Alternatively, the first tooth 120 and the support 110 may be separately provided, or the first tooth 120 and the support 110 may be integrally formed, and the first avoidance opening 120a may be formed by etching or electrodeposition.

In some embodiments, first tooth 120 and support 110 are integrally formed.

Specifically, a blank with a designated size and a designated thickness is selected, and the first avoiding opening 120a is formed by laser etching, wet etching, or electrodeposition, so that the supporting member 110 and the first tooth portion 120 can be formed.

In the wet etching process, the thickness of the blank is the sum of the thicknesses of the support member 110 and the first tooth portion 120, and the blank is subjected to surface treatment by spraying liquid medicine to realize the homogenization of the thickness and the surface roughness. Then, etching glue is coated on one side of the blank where the first avoiding opening 120a is to be formed, the area where the first avoiding opening 120a is to be formed is exposed through exposure and development, the area corresponding to the first tooth portion 120 is shielded by the etching glue, and then the blank is etched by adopting a chemical agent to form the first avoiding opening 120 a.

In the laser engraving process, the thickness of the blank is the sum of the thicknesses of the support member 110 and the first tooth portion 120. The surface treatment is carried out on the blank by spraying the liquid medicine, so that the uniformity of the thickness and the surface roughness is realized. Then, the depth and size of the laser etching are controlled by a computer program according to the size of the first avoidance hole 120a to form the first avoidance hole 120 a.

In the electrodeposition process, the thickness of the blank is the thickness of the support member 110, and the blank is subjected to surface treatment by spraying the liquid medicine to realize the uniformity of the thickness and the surface roughness. The blank is then placed in a solution with an electrolyte to form first teeth 120 on the surface of the blank by a chemical reaction.

It can be appreciated that providing the first teeth 120 and the support 110 as an integral structure can simplify the manufacturing process of the support assembly 100 and improve the accuracy of the first teeth 120 and the first escape opening 120 a.

Alternatively, the materials of the support 110 and the first teeth 120 are not limited as long as they have certain rigidity and bending property.

In some embodiments, the first direction X, the second direction Y, and the thickness direction Z are perpendicular two by two. In this manner, machining of the supporter 110 and the first teeth 120 is facilitated.

In some embodiments, the material of the support 110 comprises at least one of stainless steel and a titanium alloy.

Specifically, the material of the support 110 may include one or both of stainless steel and a titanium alloy.

It is understood that stainless steel or titanium alloy has a certain strength, and has a strong ability to bear compressive stress and tensile stress during repeated inward and outward folding of the support assembly 100, which is beneficial to further reduce the risk of fatigue damage to the support assembly 100.

The sizes of the first teeth 120 and the supporter 110 are not limited as long as they can be normally flattened and bent.

In some embodiments, in thickness direction Z, first tooth 120 has a dimension h1, and support 110 has a dimension h2, 1/3 ≦ h1/h2 ≦ 5/3.

Alternatively, h1/h2 may be 1/3, 2/3, 1, 4/3, 5/3, or the like.

The dimension h1 of the first tooth portion 120 and the dimension h2 of the supporting member 110 are set to satisfy the above relationship, which is beneficial to ensuring the overall structural strength of the supporting member 100 from the flat state to the first bent state, and simultaneously is beneficial to ensuring that the first avoiding opening 120a has a sufficient dimension along the thickness direction Z, so that in the process of bending the supporting member 100, the compressive stress between the first tooth portions 120 is reduced, and the risk of fatigue damage of the first tooth portions 120 is reduced.

In some embodiments, in the first bending state, the supporting component 100 has a first extending portion 100a, a second extending portion 100b and a bending portion 100c connecting the first extending portion 100a and the second extending portion 100b, and the bending portion 100c has a semicircular shape. Adjacent two side surfaces of every two adjacent first tooth portions 120 of the bent portion 100c are attached to each other.

Alternatively, adjacent two side surfaces of any two adjacent first tooth portions 120 of the bent portion 100c may be in plane contact, or may be in two curved surfaces in cooperation with each other.

That is, in the process of converting the support assembly 100 from the flat state to the first bending state, the first avoiding opening 120a is tapered until two adjacent side surfaces of the first avoiding opening 120a in the first bending state are attached to each other, and the support assembly 100 cannot be bent continuously. Thus, while reducing fatigue damage of the support assembly 100, self-locking of the support assembly 100 in the first bent state can be achieved, and the support assembly 100 can be maintained in the first bent state without providing a special locking mechanism.

In some embodiments, in the flattened state, the first avoidance port 120a has a triangular shape in a cross section perpendicular to the first direction X.

Alternatively, the cross section of the first avoidance port 120a along the direction perpendicular to the first direction X may be in the shape of an isosceles triangle, or in the shape of an irregularly shaped triangle, without limitation.

It can be understood that, the first avoidance opening 120a is triangular in cross section along a direction perpendicular to the first direction X, and then in a process that the supporting assembly 100 is converted from the flat state to the first bending state, an included angle between two adjacent side surfaces of two adjacent first tooth portions 120 is gradually reduced, which is beneficial to realizing mutual fitting between two adjacent side surfaces of two adjacent first tooth portions 120.

In some embodiments, a cross section of the first avoidance port 120a along a direction perpendicular to the first direction X is an isosceles triangle.

Specifically, the lengths of the cross sections of the adjacent two sides of the adjacent two first teeth 120 along the direction perpendicular to the first direction X are equal. Thus, in the process that the supporting assembly 100 is converted from the flat state to the first bending state, two adjacent side surfaces of two adjacent first tooth portions 120 are close to each other, and the extrusion forces applied to the two adjacent side surfaces of the two first tooth portions 120 are consistent, so that the two first tooth portions 120 are uniformly stressed, and the risk of fatigue damage of the part of the first tooth portions 120 due to large compression is favorably reduced.

In some embodiments, in the flattened state, the plurality of first teeth 120 are the same size in the second direction Y and are equally spaced.

Since the first teeth 120 may have a plurality of sizes in the second direction Y, the plurality of first teeth 120 having the same size in the second direction Y means that the plurality of first teeth 120 have the same size in the second direction Y at any identical cross section perpendicular to the thickness direction Z, and the plurality of first teeth 120 have an congruent polygon shape in cross section perpendicular to the first direction X.

In this way, the plurality of first teeth 120 are arranged at equal intervals and have the same size in the second direction Y. In the process of converting the support assembly 100 from the flat state to the first bent state, along with the gradual fitting of the adjacent two side surfaces of the two adjacent first tooth portions 120, the compressive stress borne by each first tooth portion 120 is relatively uniform, which is beneficial to further reducing the risk of fatigue damage of the first tooth portions 120.

In some embodiments, the minimum radius of the bent portion 100c is R1, the number of the first teeth 120 of the bent portion 100c is n, the sizes of the plurality of first teeth 120 in the bending direction are the same, and n is a positive integer greater than or equal to 2. In the flattened state, minimum dimension s1 of first tooth 120 in second direction Y satisfies: s1 is less than or equal to pi R1/n.

The first teeth 120 have the same size in the bending direction, and the cross section of the first teeth perpendicular to the first direction X is an congruent polygon.

Since the sectional area of first tooth 120 perpendicular to thickness direction Z decreases from support 110 to first tooth 120, the minimum dimension of first tooth 120 in second direction Y is the dimension of the end of first tooth 120 away from support 110.

It can be understood that, in the case of s1 ═ rr 1/n, in the first bending state, ends of two adjacent first teeth 120 corresponding to the bent portion 100c away from the support 110 contact each other, and the compressive stress is less. The smaller s1, the less compressive stress the end of first tooth 120 facing away from support 110 is subjected to.

Therefore, s1 ≦ π R1/n is advantageous for reducing the compressive stress of the first tooth 120 in the first bent state at the side facing away from the support 110.

In some alternative embodiments, s1 ═ R1/n.

Thus, in the first bending state, the ends of the two adjacent first tooth portions 120 corresponding to the bending portion 100c, which are away from the supporting member 110, are abutted against each other, so that the compressive stress borne by the first tooth portions 120 is reduced, and meanwhile, the self-locking of the supporting member 110 can be realized, and the supporting member 100 can be kept in the first bending state without arranging an independent locking component.

In some embodiments, a dimension h1 of first tooth 120 in thickness direction Z, in the flattened state, a maximum dimension s2 of first tooth 120 in second direction Y satisfies: s2 is less than or equal to pi (R1+ h 1)/n.

Since the sectional area of first tooth 120 perpendicular to thickness direction Z decreases from support 110 to first tooth 120, the maximum dimension of first tooth 120 in second direction Y is the dimension of first tooth 120 near one end of support 110.

It can be understood that, in the case where s2 is pi (R1+ h1)/n, in the first bending state, one ends of two adjacent first teeth 120 corresponding to the bent portion 100c close to the support 110 are in contact with each other, and the compressive stress is less. The smaller s2, the less compressive stress the end of first tooth 120 near support 110 is subjected to.

Therefore, s2 ≦ π (R1+ h1)/n is advantageous for reducing the compressive stress on the first tooth 120 in the first bent state near the support 110.

In some alternative embodiments, s2 ═ pi (R1+ h 1)/n.

Thus, in the first bending state, the ends of the two adjacent first teeth 120 corresponding to the bending portion 100c, which are close to the supporting member 110, are abutted against each other, so that the compressive stress borne by the first teeth 120 is reduced, and meanwhile, the self-locking of the supporting member 110 can be realized, and the supporting member 100 can be kept in the first bending state without providing an independent locking component.

In some embodiments, in the flattened state, the side surface of the first tooth portion 120 close to the first avoidance opening 120a is planar, and the included angle α between the two adjacent side surfaces of two adjacent first tooth portions 120 satisfies: alpha is more than or equal to arctan (2 n/pi).

It can be understood that, in the case of α ═ arctan (2 n/pi), in the first bent state, the adjacent two side surfaces of two adjacent first teeth 120 corresponding to the bent portion 100c completely contact with each other, and at this time, the compressive stress applied to the adjacent first teeth 120 by the first teeth 120 is almost zero. In case of α > arctan (2n/π), there is still a certain angle between two adjacent sides of two adjacent first teeth 120. At this time, there is no compressive stress between adjacent two first teeth 120.

Therefore, setting α ≧ arctan (2n/π) is advantageous for further reducing the compressive stress experienced by first tooth 120 in the first collapsed state.

In some embodiments, α ═ arctan (2n/π), at this time, in the first bending state, two adjacent first teeth 120 corresponding to the bending portion 100c are attached to each other, at this time, the first teeth 120 bear a smaller compressive stress, and a separate locking mechanism is not required to be disposed, so that the supporting assembly 100 can be maintained in the first bending state, which is beneficial to realizing self-locking of the supporting assembly 100.

Fig. 4 is a schematic structural diagram illustrating another support assembly 100 provided by the embodiment of the present application in a flattened state, and fig. 5 is a schematic structural diagram illustrating another support assembly 100 provided by the embodiment of the present application in a first folded state; fig. 6 is a schematic structural diagram of the support assembly 100 in the second bending state according to the embodiment of the present application.

As shown in fig. 4 and 6, in some embodiments, the support assembly 100 further includes a second tooth portion 130, and the second tooth portion 130 is disposed on a side of the support 110 facing away from the first tooth portion 120. In the flattened state, the plurality of second tooth portions 130 extend along the first direction X and are arranged in parallel along the second direction Y, a second avoiding opening 130a is formed between two adjacent second tooth portions 130, the support member 110 points to the direction of the second tooth portions 130, and the sectional area of the second avoiding opening 130a increases along the direction perpendicular to the thickness direction Z. In the second bending state, the second tooth portion 130 is located on a side of the supporting member 110 close to the second bending center AA2, and a distance between two adjacent side surfaces of at least two adjacent second tooth portions 130 is smaller than a distance in the flattened state.

In a direction from the support 110 to the second tooth 130, a sectional area of the second avoiding opening 130a increases along a direction perpendicular to the thickness direction Z, and a size of the second avoiding opening 130a increases along the second direction Y in the direction from the support 110 to the second tooth 130.

In the process that the supporting assembly 100 is converted from the flat state to the second bending state, an included angle between two adjacent side surfaces of two adjacent second tooth portions 130 is gradually reduced, at least a part of the second avoiding port 130a is reduced until the second bending state is reached, the position corresponding to the second avoiding port 130a is reduced to the minimum, and two adjacent side surfaces of two part of two adjacent second tooth portions 130 are abutted, so that due to the existence of the second avoiding port 130a, the compressive stress between the second tooth portions 130 in the second bending state can be reduced.

In the process of converting the supporting assembly 100 from the second bending state to the flat state, the distance between the second tooth portions 130 gradually increases, and the second avoiding opening 130a gradually increases, so that the tensile stress borne by the second tooth portions 130 in the first bending state is reduced by the existence of the second avoiding opening 130 a.

Alternatively, in the second bent state, two adjacent side surfaces of two at least partially adjacent second tooth portions 130 may at least partially abut against each other, or may be disposed at an interval. In the embodiment where the side surfaces of two adjacent second tooth portions 130 abut, the two adjacent side surfaces of two adjacent second tooth portions 130 may be in line contact or in surface contact, and only a portion of the two adjacent side surfaces may abut or the two adjacent side surfaces may completely abut.

Optionally, two adjacent side surfaces of two adjacent second tooth portions 130 may be a plane or a curved surface, and may be selected according to actual requirements.

Alternatively, two adjacent second tooth portions 130 may be adjacent to each other, or may be disposed at a distance in the second direction Y. The plurality of second teeth 130 may be equally spaced or unequally spaced.

Therefore, by providing the second tooth portions 130, providing the second avoiding opening 130a between two adjacent second tooth portions 130, and pointing the support member 110 to the direction of the second tooth portions 130, the sectional area of the second avoiding opening 130a increases along the direction perpendicular to the thickness direction, in the process of converting the support assembly 100 from the flat state to the second bent state, the compressive stress borne by the position corresponding to the second tooth portion 130 can be reduced, and in the process of converting the support assembly 100 from the flat state to the first bent state, the tensile stress borne by the position corresponding to the second tooth portion 130 of the support assembly 100 can be reduced, so that the risk of fatigue damage of the support assembly 100 due to repeated inward bending and outward bending can be reduced.

In some embodiments, along the thickness direction Z, an orthographic projection of the first avoidance opening 120a on the support 110 is offset from an orthographic projection of the second avoidance opening 130a on the support 110.

That is, the orthographic projection of the first avoidance hole 120a on the supporting member 110 and the orthographic projection of the second avoidance hole 130a on the supporting member 110 do not overlap, which is beneficial to improving the overall structural strength of the supporting assembly 100.

In some embodiments, in the thickness direction Z, the support 110 has a dimension h2, and the second tooth 130 has a dimension h3, 2/3 ≦ h3/h2 ≦ 10/3.

Alternatively, h3/h2 can be 2/3, 1, 4/3, 5/3, 2, 7/3, 8/3, 3, 10/3, or the like.

Under the condition that the size h1 of the first tooth part 120 and the size h2 of the support part 110 simultaneously satisfy 1/3 ≤ h1/h2 ≤ 5/3, the total thickness of the support assembly 100 can be set to be 70 μm-150 μm, the thickness of the first tooth part 120 accounts for 1/6-1/3 of the total thickness of the support assembly 100, the thickness of the support part 110 accounts for 1/5-1/2 of the total thickness of the support assembly 100, and the thickness of the second tooth part 130 accounts for 1/3-2/3 of the total thickness of the support assembly 100.

So set up, under the prerequisite of guaranteeing each part of supporting component 100, also be favorable to guaranteeing that second dodge mouth 130a has sufficient size along thickness direction Z to in-process that supporting component 100 bent is favorable to reducing the compressive stress between second tooth portion 130, with the risk that reduces second tooth portion 130 fatigue damage.

Alternatively, the second tooth portion 130 may be integrally formed with the supporting member 110, or may be separately formed and then connected together.

In some embodiments, the support 110 and the second tooth 130 are integrally formed.

Alternatively, the second tooth portion 130 and the second escape opening 130a may be formed by processing through wet etching, laser etching, or electrodeposition.

Alternatively, the supporter 110, the second tooth portion 130 and the first tooth portion 120 may be integrally formed, or the supporter 110 and the second tooth portion 130 may be integrally formed and then connected to the first tooth portion 120.

The supporting member 110 and the second tooth portion 130 are integrally formed, which is beneficial to reducing the overall process difficulty of the supporting assembly 100.

It should be noted that the relationship between the minimum dimension and the maximum dimension of the second tooth 130 along the second direction Y and the minimum radius of the bent portion 100c in the second bent state may be set to correspond to the relationship between the maximum dimension s2 and the minimum dimension s1 of the first tooth 120 along the second direction Y and the minimum radius R1 of the bent portion 100c in the first bent state, so as to achieve the corresponding technical effects.

Fig. 7 is a schematic structural diagram of a display device 10 according to an embodiment of the present application.

As shown in fig. 7, the display device 10 provided according to the embodiment of the present application includes the support assembly 100 provided in any of the above embodiments and the flexible display panel 200, and the flexible display panel 200 is disposed on one side of the support assembly 100 along the thickness direction Z.

Alternatively, the flexible display panel 200 may be disposed on a side of the support 110 facing away from the first tooth portion 120, or the flexible display panel 200 may be disposed on a side of the first tooth portion 120 facing away from the support 110.

In an embodiment where the support assembly 100 includes the second tooth portion 130, the flexible display panel 200 may be disposed on a side of the first tooth portion 120 facing away from the support 110, or on a side of the second tooth portion 130 facing away from the support 110.

The display device 10 provided in the embodiment of the present application has the same technical effects due to the adoption of the display device 10 provided in any one of the above embodiments, and details are not described herein.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims

1. A support assembly having a flattened state, a first bent state, and a second bent state, the support assembly comprising:

a support member;

the first tooth parts are arranged on one side of the supporting part in the thickness direction, in the flattening state, the first tooth parts extend in the first direction and are arranged in parallel in the second direction, the thickness direction, the first direction and the second direction are intersected pairwise, a first avoidance port is arranged between every two adjacent first tooth parts, the supporting part points to the direction of the first tooth parts, and the sectional area of each first avoidance port in the direction perpendicular to the thickness direction is increased progressively;

in the first bending state, the first tooth parts are positioned on one side of the support part facing a first bending center, the first bending center is parallel to the first direction, and the distance between two adjacent side surfaces of at least two part of adjacent first tooth parts is smaller than that in the flattening state;

in the second bending state, the first tooth portion is located on a side of the support member facing away from a second bending center, and the second bending center is parallel to the first direction.

2. The support assembly of claim 1, wherein the first tooth and the support are integrally provided;

preferably, the first direction, the second direction and the thickness direction are perpendicular to each other.

3. The support assembly of claim 1, wherein the material of the support comprises at least one of stainless steel and a titanium alloy;

preferably, the size of the first tooth part is h1, and the size of the supporting piece is h2, 1/3 ≦ h1/h2 ≦ 5/3 in the thickness direction.

4. A support assembly according to any one of claims 1 to 3, wherein in the first folded state, the support assembly has a first extension, a second extension and a fold connecting the first extension and the second extension, the fold being semi-circular;

and the adjacent two side surfaces of every two adjacent first tooth parts of the bending part are mutually attached.

5. The support assembly of claim 1, wherein in the flattened state, the first avoidance port is triangular in cross-section perpendicular to the first direction;

preferably, the first avoidance port is in an isosceles triangle shape along a section perpendicular to the first direction.

6. The support assembly of claim 1, wherein in the flattened state, in a cross section perpendicular to the third direction, the plurality of first teeth are equally sized in the second direction and equally spaced.

7. The support assembly according to claim 4, wherein the minimum radius of the bent portion is R1, the number of the first teeth of the bent portion is n, the first teeth have the same size along the bending direction, and n is a positive integer greater than or equal to 2;

in the flattened state, a minimum dimension s1 of the first tooth portion in the second direction satisfies: s1 is not more than pi R1/n;

preferably, s1 ═ π R1/n; and/or the presence of a gas in the gas,

a dimension of the first tooth portion in the thickness direction is h1, and in the flattened state, a maximum dimension s2 of the first tooth portion in the second direction satisfies: s2 is less than or equal to pi (R1+ h 1)/n;

preferably, s2 ═ pi (R1+ h 1)/n; and/or the presence of a gas in the gas,

in the flattening state, the side face of the first tooth part close to one side of the first avoidance opening is planar, and the included angle alpha between the adjacent two side faces of the two adjacent first tooth parts meets the following requirements: alpha is more than or equal to arctan (2 n/pi);

preferably, α ═ arctan (2 n/pi).

8. The support assembly of claim 1, further comprising a second tooth disposed on a side of the support facing away from the first tooth;

in the flattening state, the second tooth parts extend along the first direction and are arranged in parallel along the second direction, a second avoidance port is arranged between every two adjacent second tooth parts, the support piece points to the direction of the second tooth parts, and the sectional area of the second avoidance port increases progressively along the direction perpendicular to the thickness direction;

in the second bending state, the second tooth parts are positioned on one side of the supporting part close to a second bending center, and the distance between two adjacent side surfaces of at least two adjacent second tooth parts is smaller than that in the flattening state.

9. The support assembly of claim 8, wherein an orthographic projection of the first avoidance port on the support member is offset from an orthographic projection of the second avoidance port on the support member along the thickness direction;

preferably, in the thickness direction, the size of the support piece is h2, the size of the second tooth part is h3, 2/3 is less than or equal to h3/h2 is less than or equal to 10/3;

preferably, the supporting member and the second tooth portion are integrally formed.

10. A display device, comprising:

the support assembly of any one of claims 1 to 9;

and the flexible display panel is arranged on one side of the supporting component along the thickness direction.