Flexible display device and electronic equipment

Abstract

The present application discloses a flexible display device and an electronic device, wherein the flexible display device comprises a display panel having a bending portion and a supporting structure having a rotating portion, and the flexible display device is realized by the cooperation between the rotating portion and the bending portion, thereby improving the convenience of carrying and storing the flexible display device. In addition, the rotating portion is provided with a limiting mechanism, which can form a bending arc surface when the bending portion of the display panel is bent, relatively increasing the bending area of ​​the bending portion, reducing the internal stress in the bending area, reducing the probability of the flexible display device forming obvious creases in the case of frequent bending, improving the display and use effects of the flexible display device, and enhancing the market competitiveness of the flexible display device.

Description

Technical Field

[0001] The present application relates to the field of display technology, and more specifically, to a flexible display device and an electronic device. Background Art

[0002] With the continuous improvement of living standards, users have higher and higher requirements for the size of display screens of various electronic products, and various electronic devices with large-size screens have also appeared (such as mobile phones, tablet computers, etc.).

[0003] However, as the screen size increases, the size of the electronic device will also increase accordingly, causing inconvenience to users in carrying and storing it. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a flexible display device and an electronic device to achieve the purpose of improving the convenience of carrying and storing the flexible display device.

[0005] To achieve the above technical objectives, the present application provides the following technical solutions:

[0006] A flexible display device, comprising:

[0007] A display panel, the display panel comprising a bent portion;

[0008] A support structure located on a non-display surface side of the display panel, the support structure comprising a rotating portion arranged corresponding to the bending portion, the rotating portion comprising a rotating mechanism and a limiting mechanism;

[0009] The rotating mechanism is used to adjust the support structure to a bent state or an unfolded state, so that the support structure drives the bending portion of the display panel to bend or unfold;

[0010] The limiting mechanism is used to enable the bending portion of the display panel to form a bending arc surface when the bending portion of the display panel is bent.

[0011] Optionally, the display panel further includes a first display portion and a second display portion located on both sides of the bending portion;

[0012] The bending state includes an inward folding state, and when the supporting structure is in the inward folding state, the display surfaces of the first display part and the second display part are arranged opposite to each other;

[0013] The limiting mechanism comprises a limiting groove, and the limiting groove is used to accommodate the bending portion, so that the bending portion forms the bending arc surface in the limiting groove;

[0014] Optionally, when the support structure is in the inwardly folded state, the limiting groove has a groove arc surface facing the bending portion, and the limiting groove is used to accommodate the bending portion so that the groove arc surface fits with the bending arc surface of the bending portion.

[0015] Optionally, the first display portion and the second display portion of the display panel are respectively located on two sides of the bending portion;

[0016] The bent state includes an outward folded state, and when the support structure is in the outward folded state, the non-display surfaces of the first display portion and the second display portion are opposite to each other;

[0017] The limiting mechanism comprises a supporting surface, and when the supporting structure is in the outward folding state, the supporting surface is used to support the bending portion so that the bending portion forms the bending arc surface;

[0018] Optionally, the supporting surface is a supporting arc surface, and the supporting arc surface is used to fit with the bending arc surface of the bending portion.

[0019] Optionally, it further comprises: an auxiliary support structure located between the bending portion and the rotating portion;

[0020] The auxiliary support structure comprises a plurality of auxiliary support plates, and the orthographic projections of the auxiliary support plates on the display panel cover a portion of the bending axis of the bending portion;

[0021] The plurality of auxiliary support plates are used to provide pressure to the display panel to assist the display panel in maintaining an unfolded or bent state.

[0022] Optionally, the auxiliary support plate comprises a first type of auxiliary support plate and a second type of auxiliary support plate, the first type of auxiliary support plate and the second type of auxiliary support plate are alternately arranged along a first direction, and the first direction is parallel to the bending axis of the bending portion;

[0023] Optionally, the first type of auxiliary support plate includes a first area and a second area adjacent to each other, the first area and the second area are respectively located on both sides of the bending axis of the bending portion, the second type of auxiliary support plate includes a third area and a fourth area adjacent to each other, the third area and the fourth area are respectively located on both sides of the bending axis of the bending portion, the first area of ​​the first type of auxiliary support plate and the fourth area of ​​the second type of auxiliary support plate are located on the same side of the bending axis of the bending portion, the second area of ​​the first type of auxiliary support plate and the third area of ​​the second type of auxiliary support plate are located on the same side of the bending axis of the bending portion, wherein, along the second direction, the size of the first area is smaller than the size of the fourth area, and / or the size of the third area is smaller than the size of the second area, and the second direction intersects with the first direction.

[0024] Optionally, the plurality of auxiliary support plates have the same size and shape; or, at least two of the auxiliary support plates have different sizes and / or shapes.

[0025] Optionally, the rotating part further includes: a rotating shaft;

[0026] The rotating mechanism is connected to the rotating shaft, and the rotating mechanism is used to drive the rotating shaft to rotate;

[0027] The plurality of auxiliary support plates are sleeved on the rotating shaft.

[0028] Optionally, the display panel further includes a first display portion and a second display portion located on both sides of the bending portion; the support structure further includes a support plate, and the support plate is used to support the first display portion and the second display portion; the rotating portion further includes: a connecting member; wherein,

[0029] The connecting member is connected to the rotating shaft;

[0030] The supporting plate is connected to the connecting member.

[0031] Optionally, the rotating mechanism includes at least one of a gear and a hinge.

[0032] An electronic device comprises the flexible display device as described in any one of the above items.

[0033] It can be seen from the above technical solution that the embodiments of the present application provide a flexible display device and an electronic device, wherein the flexible display device includes a display panel having a bending portion and a supporting structure having a rotating portion, and through the cooperation between the rotating portion and the bending portion, the bendable characteristics of the flexible display device are realized, thereby improving the convenience of carrying and storing the flexible display device.

[0034] In addition, the rotating part is provided with a limiting mechanism, which can make the bending portion of the display panel form a bending arc surface when the bending portion of the display panel is bent, thereby relatively increasing the bending area of ​​the bending portion, reducing the internal stress in the bending area, and reducing the probability of the flexible display device forming obvious creases when it is frequently bent, thereby improving the display and use effects of the flexible display device and enhancing the market competitiveness of the flexible display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0036] Figure 1 is a schematic diagram of the bending of a flexible display device;

[0037] Figure 2 A schematic top view of a flexible display device provided in one embodiment of the present application;

[0038] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along line AA';

[0039] Figure 4 A schematic diagram of a bent state of a flexible display device provided by an embodiment of the present application;

[0040] Figure 5 A schematic diagram of a bent state of a flexible display device provided in another embodiment of the present application;

[0041] Figure 6 A schematic top view of a flexible display device provided in another embodiment of the present application;

[0042] Figure 7 To assist in supporting the edge of the board Figure 6 The cross-sectional structure diagram of the BB' line shown;

[0043] Figure 8 A schematic top view of a flexible display device provided in yet another embodiment of the present application;

[0044] Fig. 9 A schematic diagram of a top view of a support structure provided in one embodiment of the present application;

[0045] Fig.10 A schematic diagram of the structure of an electronic device provided for one embodiment of the present application. DETAILED DESCRIPTION

[0046] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0047] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0048] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0049] With the emergence of flexible display technologies such as OLED (Organic Light-Emitting Diode), QLED (Quantum Dot Light Emitting Diodes), and Micro-LED, the preparation of flexible display devices has become possible. The display panel based on the above display technology has the characteristic of being bendable, and with the supporting structure designed to match it, the display device can be used in a bendable manner. In this way, when the display screen becomes larger and larger, the size of the display device itself can be changed by bending to meet the requirements of portability and easy storage.

[0050] However, due to the material characteristics of the display panel, obvious creases are likely to appear on the display surface of the display panel during repeated bending and use of the flexible display device, which has a negative impact on the high-quality texture and display effect of the flexible display panel and also has an adverse impact on the user experience.

[0051] The inventor has found through research that Figure 1 As shown, during the bending process of the flexible display device, the rotating mechanism 2 of the supporting structure needs to drive the supporting plate 1 to rotate, so that the supporting plate 1 applies pressure to the display panel 3 to change the bending state of the display panel 3. In addition to the limitation of the material of the display panel prepared based on the above display technology, the reasons for the creases during the use of the flexible display device also include the following: when the display panel is bent, the bending area will form a crease. Figure 1 The “dead fold” shown in the dotted box K (i.e., a 90° fold angle on the display panel) applies excessive stress to the folded position of the display panel, which can easily lead to the appearance of creases.

[0052] In order to solve this problem, an embodiment of the present application provides a flexible display device. By setting a limiting mechanism in the supporting structure, the bending radius of the display panel when bent is increased, so that the bending portion forms a bending arc surface in the bent state, thereby reducing the stress on the bending portion and reducing the probability of obvious creases forming on the display panel due to repeated bending.

[0053] The flexible display device provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

[0054] The present application provides a flexible display device. Figure 2 , Figure 3 and Figure 4 As shown, Figure 2 is a schematic top view of the flexible display device, Figure 3 for Figure 2 The cross-sectional structure diagram along the AA' line in the figure is as follows: Figure 4 Schematic diagram of the cross-sectional structure when the support structure is in a bent state, the flexible display device includes: a display panel 10, the display panel 10 includes a bent portion FL, a support structure 20 located on the non-display side of the display panel 10, the support structure 20 includes a rotating portion 21 arranged corresponding to the bent portion FL, the rotating portion 21 includes a rotating mechanism 211 and a limiting mechanism 212, the rotating mechanism 211 is used to adjust the support structure 20 to be in a bent state or an unfolded state, so that the support structure 20 drives the bent portion FL of the display panel 10 to bend or unfold. The limiting mechanism 212 is used to make the bent portion FL of the display panel 10 form a bent arc surface 11 when the bent portion FL of the display panel 10 is bent.

[0055] In this embodiment, the support structure 20 is mainly used to drive the display panel 10 to rotate, so as to adjust the bending or unfolding state of the bending portion FL of the display panel 10. Figure 2 The bending portion FL of the display panel 10 shown in the figure can be a fixed area of ​​the display panel 10, or it can be any display area of ​​the display panel 10, that is, the bending portion FL of the display panel 10 can be set according to actual needs. Whether the bending portion FL of the display panel 10 is adjustable mainly depends on the specific structural design of the support structure 20. When the rotating portion 21 of the support structure 20 can be adjusted in position by structures such as guide rails and pulleys, and the display panel 10 is a flexible display panel as a whole, the bending portion FL of the display panel 10 can be adjusted according to the position of the rotating portion 21 of the support structure 20 to meet the user's more diverse bending needs. Therefore, in this embodiment, the corresponding arrangement of the rotating portion 21 and the bending portion FL means that the position of the rotating portion 21 and the bending portion FL corresponds. And it is not difficult to understand that, under normal circumstances, when the support structure 20 is in the unfolded state, the bending portion FL of the display panel 10 is also used for display.

[0056] In addition to driving the display panel 10 to rotate, the support structure 20 can also support the display panel 10 to ensure that the flexible display panel 10 can be stably in a certain state (such as bending or unfolding). Figure 3 , a partial cross-sectional structural schematic diagram of the display panel 10 when it is in an unfolded state is shown. Figure 4 , a partial cross-sectional structural schematic diagram of the display panel 10 when it is in a bent state is shown.

[0057] Combination Figure 2 , Figure 3 and Figure 4 It can be found that due to the presence of the limiting mechanism 212 in the rotating part 21, the bending area of ​​the bending portion FL of the display panel 10 is relatively enlarged. When the bending portion FL of the display panel 10 is bent, the limiting mechanism 212 provides a accommodating space for the bending portion FL of the display panel 10, so that the bending portion FL of the display panel 10 can form a bending arc surface 11 in the accommodating space instead of a "dead fold", which reduces the probability of the bending portion FL being subjected to excessive stress during the bending process and causing creases, improves the display effect, and enhances the user experience and product maturity of the flexible display device.

[0058] In some embodiments, in addition to allowing the bending portion of the display panel to form a bending arc surface when the bending portion of the display panel is bent, the limiting mechanism can also provide a certain supporting force to the display panel when the bending portion of the display panel is unfolded, thereby playing a certain supporting role for the display panel.

[0059] In some embodiments, reference Figure 4 As shown, in addition to providing a space for the bending portion FL to form the bending arc surface 11 naturally, the limiting mechanism also includes a curved surface structure for guiding the bending arc surface 11 to be formed for the bending portion FL, so that the bending arc surface 11 can form a bending arc surface 11 similar to the shape of the curved surface structure under the appropriate pressure provided by the curved surface structure. The embodiment of the present application does not limit the specific method of how the limiting mechanism causes the bending portion FL to form the bending arc surface 11, which depends on the actual situation.

[0060] In some embodiments, the rotating part 21 can be rotated by a gear, and in other embodiments, the rotating part 21 can also be rotated by a hinge or other structure so that the rotating part 21 has a degree of freedom in the rotation direction. This application does not limit this.

[0061] Continue to refer Figure 3 and Figure 4In some embodiments, the support structure 20 may further include a support plate 22 that supports other regions of the display panel 10 (which may be display portions located on both sides of the bending portion FL) except the bending portion FL, and the connection between the rotating mechanism 211 and the support plate 22 may be achieved through a connecting member such as a connecting rod and a connecting spring. The present application does not limit the existence of the connecting member and the support plate 22, and the specific forms of the connecting member and the support plate 22, which will be determined according to the actual situation.

[0062] In some embodiments, reference Figure 3 and Figure 4 As shown, in order to guide the bending portion FL when bending so that the bending portion FL can better form a bending arc surface 11 when bending, the display panel 10 also includes a first display portion AA1 and a second display portion AA2 located on both sides of the bending portion FL. The bending state includes an inward folding state. When the support structure 20 is in the inward folding state, the display surfaces of the first display portion AA1 and the second display portion AA2 are arranged opposite to each other. The limiting mechanism 212 includes a limiting groove 212A, and the limiting groove 212A is used to accommodate the bending portion FL so that the bending portion FL forms a bending arc surface 11 in the limiting groove 212A.

[0063] In this embodiment, the inward folded state refers to the first display portion AA1 and the second display portion AA2 of the display panel 10 on both sides of the bending portion FL being bent inwardly, so that the display surfaces of the first display portion AA1 and the second display portion AA2 are arranged opposite to each other. The inward folded state can be as follows: Figure 4 The fully bent state shown may also be a partially bent state, such that the display surfaces of the first display portion AA1 and the second display portion AA2 are arranged partially opposite to each other, and the present application does not limit this.

[0064] The limiting groove 212A is designed to avoid the bending portion FL, so that the bending portion FL can have a certain accommodation space to naturally bend into the bending arc surface 11 in the bent state.

[0065] Optionally, refer to Figure 4 When the support structure 20 is in the inward folded state, the limiting groove 212A has a groove arc surface facing the bending portion, and the limiting groove 212A is used to accommodate the bending portion so that the groove arc surface fits with the bending arc surface 11 of the bending portion.

[0066] exist Figure 4 In the illustrated embodiment, in addition to providing a certain accommodation space for the bending portion, the limiting groove 212A also guides the bending portion FL to form a bending arc surface 11 through the arc surface in the limiting groove, thereby reducing the possibility of the bending portion FL forming a "dead bend" state during the bending process.

[0067] In some embodiments, the surface of the limiting groove 212A facing the bending portion may not be a curved surface, for example, it may be a flat surface. In this case, the limiting groove 212A is Figure 2 The cross-sectional shape of the AA' line may also be a rectangle. The rectangular groove does not need to be processed into a curved surface, which is beneficial to reducing the process complexity of the flexible display device.

[0068] In some embodiments, the support structure 20 can also fold the display panel 10 outward, so that the flexible display device can still display images in the bent state. Figure 5 The display panel 10 also includes a first display portion AA1 and a second display portion AA2 located on both sides of the bending portion FL; the bending state includes an outward folding state, when the supporting structure 20 is in the outward folding state, the non-display surfaces of the first display portion AA1 and the second display portion AA2 are arranged relatively to each other; the limiting mechanism 212 includes a supporting surface 212B, when the supporting structure 20 is in the outward folding state, the supporting surface 212B is used to support the bending portion FL so that the bending portion FL forms a bending arc surface 11.

[0069] In this embodiment, the support structure 20 is in an outward folded state, at which time the non-display surfaces of the first display portion AA1 and the second display portion AA2 are arranged opposite to each other, and the display surfaces are both facing outward, and the first display portion AA1 and / or the second display portion AA2 can be used to display images as needed, meeting the user's needs of using a small screen for display in certain application scenarios. Optionally, in some cases, in the folded state, the folded portion FL can also be displayed as needed.

[0070] In an optional embodiment, the support surface 212B is a support arc surface, and the support arc surface is used to fit with the bending arc surface 11 of the bending portion. Figure 5 In the outer folding state shown, the support surface 212B of the limiting mechanism 212 is formed by a block structure with a fan-shaped cross section. The arc surface of the structure serves as the support surface 212B to support the bending portion FL of the display panel 10 in the outer folding state, so that the bending portion FL forms a bending arc surface 11 under the action of the support surface 212B, reducing the probability of the bending portion FL being dead-folded during the bending process. In addition, when the support surface 212B is a supporting arc surface, the stress applied to the bending portion FL by the supporting arc surface can also be reduced, reducing the probability of the bending portion FL being damaged by the supporting arc surface.

[0071] Optionally, the support surface 212B of the limiting mechanism 212 may not be a support arc surface. Figure 5 In the cross section shown, the cross-sectional shape of the support surface 212B may also be a broken line. In this case, the limiting mechanism 212 does not need to be processed into an arc surface, which helps to reduce the difficulty of the manufacturing process.

[0072] In one embodiment, reference Figure 6 and Figure 7In order to optimize the supporting effect of the support structure 20 on the bending portion FL in the bent state and the unfolded state, the flexible display device also includes: an auxiliary support structure located between the bending portion FL and the rotating portion 21; the auxiliary support structure includes a plurality of auxiliary support plates 31, and the orthographic projection of the auxiliary support plates 31 on the display panel 10 covers the bending axis of the bending portion FL; the plurality of auxiliary support plates 31 are used to provide pressure to the display panel 10 to assist the display panel 10 in maintaining an unfolded or bent state. The bending axis refers to the bending center line of the bending portion FL during the bending process, that is, the bending portion FL rotates around the bending axis during the bending process. In this embodiment, auxiliary support plates 31 that can support pressure on the non-display surface of the display panel are formed on both sides from the bending axis, so that when the flexible display device is unfolded, it can use pressure on the bending axis and the surrounding area of ​​the bending portion of the display panel to maintain the flatness of the display panel. See. Figure 6 The Stitch structure formed by the auxiliary support plate 31 shown enables the flexible display device to maintain a stable crease when repeatedly bent or maintained in a bent state. When the display panel is unfolded, the Stitch structure formed by the auxiliary support plate 31 can also maintain flatness.

[0073] Figure 7 The auxiliary support plate 31 is Figure 6 As shown in the cross-sectional structural diagram of the BB' line in FIG, the auxiliary support plate 31 may be a support plate 22 with a certain bending shape, so that when the display panel 10 is in different states (bent or unfolded), the bending shape of the support plate 22 provides a certain pressure to the display panel 10, so as to assist the display panel 10 in better unfolding or bending. That is, the auxiliary support plate 31 can enable the display panel 10 to maintain a better and flatter state when unfolded, and can maintain a more stable bending state when the display panel 10 is bent.

[0074] Optional, reference Figure 6 The auxiliary support plates 31 include first-type auxiliary support plates 311 and second-type auxiliary support plates 312 . The first-type auxiliary support plates 311 and second-type auxiliary support plates 312 are alternately arranged along a first direction DR1 . The first direction DR1 is parallel to the bending axis AX of the bending portion FL.

[0075] In this embodiment, the auxiliary support plate 31 includes a first type of auxiliary support plate 311 and a second type of auxiliary support plate 312 alternately arranged along the first direction DR1. There is no need to cover both sides of the bending axis AX with auxiliary support plates. While ensuring that the auxiliary support plate 31 can realize the function of assisting the display panel to maintain an unfolded or bent state, the auxiliary support plate 31 can use pressure on the bending axis and the surrounding area of ​​the bending part of the display panel to maintain the flatness of the display panel when the flexible display device is unfolded. At the same time, the material required for the auxiliary support plate is reduced, the weight of the flexible display device is reduced, and it is easy to carry, which is beneficial to reduce the cost of the flexible display device.

[0076] Optionally, the first type of auxiliary support plate 311 includes a first area A1 and a second area A2 adjacent to each other, and the first area A1 and the second area A2 are respectively located on both sides of the bending axis AX of the bending portion FL, and the second type of auxiliary support plate 312 includes a third area A3 and a fourth area A4 adjacent to each other, and the third area A3 and the fourth area A4 are respectively located on both sides of the bending axis AX of the bending portion FL, the first area A1 of the first type of auxiliary support plate 311 and the fourth area A4 of the second type of auxiliary support plate 312 are located on the same side of the bending axis AX of the bending portion FL, and the second area A2 of the first type of auxiliary support plate 311 and the third area A3 of the second type of auxiliary support plate 312 are located on the same side of the bending axis AX of the bending portion FL, wherein, along the second direction DR2, the size of the first area A1 is smaller than the size of the fourth area A4, and / or the size of the third area A3 is smaller than the size of the second area A2, and the second direction DR2 intersects with the first direction DR1. Optionally, along the second direction DR2, the size of the first area A1 is smaller than the size of the second area A2, and the size of the third area A3 is smaller than the size of the fourth area A4. Optionally, the first direction DR1 is perpendicular to the second direction DR2. It can be understood that, along the second direction DR2, the size of the first area A1 can be the extension width of the first area A1 along the second direction DR2, the size of the second area A2 can be the extension width of the second area A2 along the second direction DR2, the size of the third area A3 can be the extension width of the third area A3 along the second direction DR2, and the size of the fourth area A4 can be the extension width of the fourth area A4 along the second direction DR2.

[0077] refer to Figure 6 The first type of auxiliary support plate 311 and the second type of auxiliary support plate 312 arranged in this way form a Stitch structure on both sides of the bending axis AX along the first direction DR1, so that when the flexible display device is unfolded, the auxiliary support plate 31 can use pressure on the bending axis and the surrounding area of ​​the bending part of the display panel to maintain the flatness of the display panel, support the bending axis of the bending part to prevent "dead fold" and make the force on the bending part uniform, so that the auxiliary support plate 31 can better maintain the bending or unfolding state of the display panel.

[0078] In some embodiments of the present application, reference Figure 6 As shown, the size and shape of the plurality of auxiliary support plates 31 are the same; the plurality of auxiliary support plates 31 are alternately arranged along the first direction DR1, and the first direction is parallel to the bending axis of the bending portion FL. In this embodiment, the size and shape of the plurality of auxiliary support plates 31 are the same, which can simplify the preparation process of the auxiliary support plates 31 and reduce the preparation difficulty. It can be understood that the size of the auxiliary support plate includes the size along the first direction and the size along the second direction.

[0079] In one embodiment of the present application, reference Figure 8 In order to reduce the probability that the edges of the multiple auxiliary support plates 31 may cause obvious support lines, at least two of the auxiliary support plates 31 have different sizes and / or shapes; the multiple auxiliary support plates 31 are alternately arranged on both sides of the bending axis AX along a first direction, and the first direction is parallel to the bending axis AX of the bending portion FL.

[0080] In this embodiment, at least two auxiliary support plates 31 have different sizes and / or shapes, which can weaken the shape of the support line formed by the auxiliary support plates 31 of the same size and shape, and improve the situation where the edges of multiple identical auxiliary support plates 31 jointly form an obvious support line.

[0081] from Figure 2 , Figure 6 and Figure 8 It can be seen from the XY coordinate system that Figure 6 and Figure 8 The placement of the display panel 10 is similar to Figure 2 The placement of the display panel 10 is different. Figure 6 and Figure 8 The auxiliary support plate 31 shown in the figure is in the shape of a square or a rectangle, but the shape of the auxiliary support plate 31 is not limited to the above square or rectangle, and other polygonal or honeycomb shapes can be used as shown in the figure. Figure 6 and Figure 8 The distribution patterns of the stitch structure shown can all be feasible shapes of the auxiliary support plate 31. That is, the auxiliary support plate 31 of any shape arranged in the stitch structure is within the protection scope of the present application.

[0082] In one embodiment of the present application, reference Fig. 9As shown, in order to reduce the influence of the setting of the auxiliary support plate 31 on the rotation of the rotating part 21, the rotating part 21 further includes: a rotating shaft 213, a rotating mechanism 211 connected to the rotating shaft 213, the rotating mechanism 211 is used to drive the rotating shaft 213 to rotate, and a plurality of auxiliary support plates 31 are sleeved on the rotating shaft 213. In this embodiment, the rotating mechanism 211 and the auxiliary support plate 31 are connected by the rotating shaft 213, so that the auxiliary support plate 31 can rotate with the rotating mechanism 211, and there is no need for the auxiliary support plate 31 to be directly connected to the rotating mechanism 211, thereby reducing the adverse influence that the auxiliary support plate may cause on the rotating mechanism 211.

[0083] In some embodiments, reference Fig. 9 As shown, the display panel further includes a first display portion and a second display portion located on both sides of the bending portion; the support structure further includes a support plate, and the support plate is used to support the first display portion and the second display portion; the rotating portion 21 further includes: a connecting member 214; wherein the connecting member 214 is connected to the rotating shaft 213. The support plate 22 is connected to the connecting member 214. In this embodiment, the rotating shaft 213 provides rotational power for the connecting member 214 and the support plate 22, thereby ensuring smooth rotation of the rotating mechanism 211 and reducing the influence of other structures on the rotation of the rotating mechanism 211.

[0084] In order to clearly illustrate the auxiliary support plate 31, Fig. 9 The limiting mechanism 212 is not shown in the figure. In some embodiments, the limiting mechanism 212 can also be set on the rotating shaft 213 and staggered with the auxiliary support plate 31.

[0085] Accordingly, reference Fig.10 , an embodiment of the present application further provides an electronic device 100, comprising the flexible display device as described in any of the above embodiments.

[0086] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The above-mentioned embodiments only express several implementation methods of this specification, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the solutions provided by the embodiments of this specification. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of this specification, which all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification shall be based on the attached claims.

Claims

1. A flexible display device, It is characterized in that The flexible display device comprises: A display panel, the display panel comprising a bent portion; A support structure located on a non-display surface side of the display panel, the support structure comprising a rotating portion arranged corresponding to the bending portion, the rotating portion comprising a rotating mechanism and a limiting mechanism; The rotating mechanism is used to adjust the support structure to a bent state or an unfolded state, so that the support structure drives the bending portion of the display panel to bend or unfold; The limiting mechanism is used to make the bending portion of the display panel form a bending arc surface when the bending portion of the display panel is bent; The flexible display device further includes: an auxiliary support structure located between the bending portion and the rotating portion; The auxiliary support structure comprises a plurality of auxiliary support plates, and the orthographic projections of the auxiliary support plates on the display panel cover the bending axis of the bending portion; The plurality of auxiliary support plates are used to provide pressure to the display panel to assist the display panel in maintaining an unfolded or bent state; The auxiliary support plates include a first type of auxiliary support plates and a second type of auxiliary support plates, the first type of auxiliary support plates and the second type of auxiliary support plates are alternately arranged along a first direction, and the first direction is parallel to the bending axis of the bending portion; The first type of auxiliary support plate comprises a first area and a second area adjacent to each other, the first area and the second area are respectively located on both sides of the bending axis of the bending portion, the second type of auxiliary support plate comprises a third area and a fourth area adjacent to each other, the third area and the fourth area are respectively located on both sides of the bending axis of the bending portion, the first area of ​​the first type of auxiliary support plate and the fourth area of ​​the second type of auxiliary support plate are located on the same side of the bending axis of the bending portion, the second area of ​​the first type of auxiliary support plate and the third area of ​​the second type of auxiliary support plate are located on the same side of the bending axis of the bending portion, wherein, along the second direction, the size of the first area is smaller than the size of the fourth area, and / or the size of the third area is smaller than the size of the second area, and the second direction intersects with the first direction; At least two of the auxiliary support plates have different sizes and / or shapes.

2. The flexible display device according to claim 1, It is characterized in that The display panel further includes a first display portion and a second display portion located on both sides of the bending portion; The bending state includes an inward folding state, and when the supporting structure is in the inward folding state, the display surfaces of the first display part and the second display part are arranged opposite to each other; The limiting mechanism comprises a limiting groove, and the limiting groove is used to accommodate the bending portion so that the bending portion forms the bending arc surface in the limiting groove.

3. The flexible display device according to claim 2, It is characterized in that When the support structure is in the inwardly folded state, the limiting groove has a groove arc surface facing the bending portion, and the limiting groove is used to accommodate the bending portion so that the groove arc surface fits with the bending arc surface of the bending portion.

4. The flexible display device according to claim 1, It is characterized in that The display panel further includes a first display portion and a second display portion located on both sides of the bending portion; The bending state includes an outward folding state, and when the supporting structure is in the outward folding state, the non-display surfaces of the first display portion and the second display portion are arranged opposite to each other; The limiting mechanism comprises a supporting surface, and when the supporting structure is in the outward folding state, the supporting surface is used to support the bending portion so that the bending portion forms the bending arc surface.

5. The flexible display device according to claim 4, It is characterized in that The supporting surface is a supporting arc surface, and the supporting arc surface is used to fit with the bending arc surface of the bending portion.

6. The flexible display device according to claim 1, It is characterized in that The rotating part further includes: a rotating shaft; The rotating mechanism is connected to the rotating shaft, and the rotating mechanism is used to drive the rotating shaft to rotate; The plurality of auxiliary support plates are sleeved on the rotating shaft.

7. The flexible display device according to claim 6, It is characterized in that The display panel further includes a first display portion and a second display portion located on both sides of the bending portion; The support structure further includes a support plate, and the support plate is used to support the first display part and the second display part; The rotating part further includes: a connecting member; wherein, The connecting member is connected to the rotating shaft; The supporting plate is connected to the connecting member.

8. The flexible display device according to any one of claims 1 to 7, It is characterized in that The rotating mechanism includes at least one of a gear and a hinge.

9. An electronic device, It is characterized in that include: The flexible display device according to any one of claims 1 to 8.

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