Display device and mobile terminal

Abstract

The application belongs to the technical field of display, and particularly relates to a display device and a mobile terminal. The application discloses a display device, which comprises a flexible display panel and a first supporting piece. The flexible display panel comprises a first subpart, a second subpart and a third subpart which are sequentially arranged and connected. The third subpart is bent to the backlight side of the first subpart through the second subpart. The first supporting piece comprises a first surface and a second surface which are oppositely arranged. The first surface and the second surface support the first subpart and the third subpart respectively. According to the application, the flexible display panel comprises the first subpart and the third subpart. The first subpart and the third subpart are connected through the second subpart. The first subpart and the third subpart are located on the first surface and the second surface of the first supporting piece respectively. The third subpart is folded to the back of the first subpart and can be used as a secondary screen. The display device does not need to additionally set an independent secondary screen, thereby reducing the production cost.

Description

Technical Field

[0001] This application belongs to the field of display technology, and in particular relates to display devices and mobile terminals. Background Technology

[0002] As consumers increasingly find themselves at odds with the screen size and portability of mobile devices, mobile devices with foldable displays have emerged.

[0003] Currently, inward-folding displays have become the mainstream market trend. However, for ease of daily use, mobile terminals equipped with inward-folding displays often need to be paired with a secondary screen on the outside, which increases the overall cost. Furthermore, the secondary screen requires a separate wiring harness, affecting the overall thickness of the device. Summary of the Invention

[0004] This application provides a display device and a mobile terminal, aiming to reduce production costs and decrease the thickness of the display device.

[0005] This application provides a display device including a flexible display panel and a first support member. The flexible display panel includes a first portion, a second portion, and a third portion arranged and connected in sequence. The third portion is bent to the backlight side of the first portion through the second portion. The first support member includes a first surface and a second surface disposed opposite to each other, and the first surface and the second surface respectively support the first portion and the third portion.

[0006] According to an embodiment of the first aspect of this application, the first support member further includes a third surface, which connects the first surface and the second surface and supports the second portion; optionally, the third surface is a side surface of the first support member.

[0007] According to an embodiment of the first aspect of this application, the third surface includes a first sub-surface, which is an arc surface, and the second portion includes a first sub-part, with the first sub-surface supporting the first sub-part. Optionally, the first surface and the second surface are connected by two sequentially arranged first sub-surfaces, and the first portion and the third portion are connected by two sequentially arranged first sub-parts. Optionally, the third surface also includes a second sub-surface, which connects the two first sub-surfaces, and the second portion also includes a second sub-part, which connects the two first sub-parts, with the second sub-surface supporting the second sub-part. Optionally, the second sub-surface is an arc surface or a plane. Optionally, the first sub-surface abuts against the first sub-part, and the second sub-surface abuts against the second sub-part.

[0008] According to an embodiment of the first aspect of this application, a first filler adhesive is provided between the third surface and the second portion; optionally, at least a portion of the first filler adhesive is located between the first sub-surface and the first sub-portion; optionally, the third surface further includes a second sub-surface, the second sub-surface connecting two first sub-surfaces, the second portion further includes a second sub-portion, the second sub-portion connecting two first sub-portions, and at least a portion of the first filler adhesive is located between the second sub-surface and the second sub-portion.

[0009] According to an embodiment of the first aspect of this application, a receiving hole is provided on the first support member, which extends through the first support member along the line connecting the first surface and the second surface. At least a second portion passes through the receiving hole and connects the first portion and the third portion. The third surface is the side of the first support member facing the receiving hole.

[0010] According to an embodiment of the first aspect of this application, the flexible display panel includes a flexible screen body and a protective layer located on at least one side of the flexible screen body; the protective layer has a groove on the side facing the first support member, at least part of the groove is located in the second portion, and the depth of the groove gradually increases and then gradually decreases along the direction away from the first portion; or, the protective layer includes two sub-support portions disposed at intervals, a gap is formed between the two sub-support portions, and at least part of the gap is located in the second portion.

[0011] According to the first aspect of this application, a protective layer is provided on both sides of the flexible screen. The material of the protective layer on the side of the flexible screen away from the first support member includes flexible glass, colorless polyimide or polyethylene terephthalate, and the material of the protective layer on the side of the flexible screen facing the first support member includes metal or metal oxide.

[0012] According to an embodiment of the first aspect of this application, the protective layer located on the side of the flexible screen away from the first support member includes two sub-support portions spaced apart. The material of the sub-support portion located in the third portion includes flexible glass, and the material of the sub-support portion located in the first portion includes plastic colorless polyimide or polyethylene terephthalate.

[0013] According to an embodiment of the first aspect of this application, the flexible display panel further includes a fourth portion and a fifth portion connected to each other, the fourth portion being connected to the side of the first portion opposite to the second portion, and the fifth portion being located on the side of the fourth portion opposite to the first portion; the display device further includes a second support member rotatably connected to the first support member, the second support member supporting the fifth portion; optionally, the display device further includes a rotating member, the first support member and the second support member being rotatably connected to the rotating member; optionally, the second portion is located on the side of the first support member opposite to the rotating member.

[0014] On the other hand, this application also provides a mobile terminal, including the display device of any of the above embodiments.

[0015] The display device of this application embodiment includes a flexible display panel and a first support member. The flexible display panel includes a first portion, a second portion, and a third portion arranged and connected in sequence. The third portion is bent to the backlight side of the first portion through the second portion. The first support member includes a first surface and a second surface disposed opposite to each other, and the first surface and the second surface respectively support the first portion and the third portion. By making the flexible display panel include a first portion and a third portion, and the first portion and the third portion are connected through the second portion, with the first portion and the third portion located on the first surface and the second surface of the first support member respectively, the third portion is folded to the back of the first portion and can be used as a sub-screen. The display device does not need to set up an additional independent sub-screen, thereby reducing production costs. At the same time, the display device does not need to set up an additional sub-screen wiring harness, thereby reducing the thickness of the display device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural schematic diagram of a display device according to some embodiments of this application;

[0018] Figure 2 An example is shown. Figure 1 A magnified schematic diagram of the display device at position A;

[0019] Figure 3 A cross-sectional view of another example display device in a folded state is shown.

[0020] Figure 4 An example is shown. Figure 3 A cross-sectional view of the display device in its unfolded state;

[0021] Figure 5 An example is shown. Figure 3 A magnified schematic diagram of the display device at position B;

[0022] Figure 6 An example is shown. Figure 5 A magnified structural diagram of the display device at position C;

[0023] Figure 7 Another example is shown Figure 5 A magnified structural diagram of the display device at position C;

[0024] Figure 8 This shows yet another example. Figure 5A magnified structural diagram of the display device at position C;

[0025] Figure 9 Another example is shown. Figure 5 A magnified structural diagram of the display device at position C;

[0026] Figure 10 Another example is shown. Figure 5 A magnified structural diagram of the display device at position C;

[0027] Figure 11 Another example is shown. Figure 5 A magnified structural diagram of the display device at position C;

[0028] Figure 12 A partial cross-sectional view of an example flexible display panel is shown.

[0029] Figure 13 A partial cross-sectional view of another example of a flexible display panel is shown in the schematic diagram.

[0030] Figure 14 A schematic diagram of a partial cross-sectional structure of an example flexible display panel after it has been flattened is shown.

[0031] Figure 15 A schematic diagram showing a partial cross-sectional view of another example of a flexible display panel after it has been flattened.

[0032] Figure 16 A partial cross-sectional view of another example of a flexible display panel is shown.

[0033] Figure 17 A partial cross-sectional view of another example of a flexible display panel is shown.

[0034] Figure label:

[0035] 10. Display device;

[0036] 100. Flexible display panel; 110. First section; 120. Second section; 121. First sub-section; 122. Second sub-section; 130. Third section; 140. Fourth section; 150. Fifth section;

[0037] 160. Flexible screen body; 170. Protective layer; 171. Groove; 172. Sub-support; 173. Notch;

[0038] 210. First support member; 211. First surface; 212. Second surface; 213. Third surface; 214. First sub-surface; 215. Second sub-surface; 216. Receiving hole; 220. Second support member;

[0039] 300. Rotating parts;

[0040] 400. First filler adhesive;

[0041] 500, Second filler adhesive;

[0042] z, the thickness direction of the first support member. Detailed Implementation

[0043] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0045] In the process of realizing this invention, the applicant discovered the following problems in the related technology: mobile terminals equipped with inward-folding displays often need to be equipped with a secondary screen on the outside, which increases the overall cost; and the secondary screen requires a separate wiring harness connection, which affects the thickness of the whole device.

[0046] In view of the above problems, the applicant proposes a display device, a flexible display panel and a first support member. The flexible display panel includes a first portion, a second portion and a third portion arranged and connected in sequence, and the third portion is bent to the backlight side of the first portion through the second portion. The first support member includes a first surface and a second surface disposed opposite to each other, and the first surface and the second surface respectively support the first portion and the third portion.

[0047] In the display device provided in this application, by making the flexible display panel include a first portion and a third portion, and the first portion and the third portion are connected by a second portion, and the first portion and the third portion are respectively located on the first surface and the second surface of the first support member, the third portion is folded to the back of the first portion and can be used as a sub-screen. The display device does not need to set up an additional independent sub-screen, thereby reducing production costs. At the same time, the display device does not need to set up an additional wiring harness for the sub-screen, thereby reducing the thickness of the display device.

[0048] To better understand this application, the display device and mobile terminal of the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that the z-direction in the drawings represents the thickness direction of the first support member. In the drawings, for ease of drawing, the dimensions are not necessarily proportional to the actual dimensions, and some hierarchical structures in the display device are not shown.

[0049] Please refer to Figure 1 and Figure 2 , Figure 1 This is a cross-sectional structural schematic diagram of a display device according to some embodiments of this application; Figure 2 An example is shown. Figure 1 A magnified schematic diagram of the display device at position A.

[0050] like Figure 1 and Figure 2 As shown, an embodiment of the first aspect of this application provides a display device 10, including a flexible display panel 100 and a first support member 210. The flexible display panel 100 includes a first portion 110, a second portion 120, and a third portion 130 arranged sequentially and connected together. The third portion 130 is bent to the backlight side of the first portion 110 through the second portion 120. The first support member 210 includes a first surface 211 and a second surface 212 disposed opposite to each other, and the first surface 211 and the second surface 212 respectively support the first portion 110 and the third portion 130.

[0051] In the display device 10 provided in this application embodiment, by making the flexible display panel 100 include a first portion 110 and a third portion 130, and the first portion 110 and the third portion 130 are connected by a second portion 120, the first portion 110 and the third portion 130 are respectively located on the first surface 211 and the second surface 212 of the first support member 210, so that the third portion 130 is folded to the back of the first portion 110 and can be used as a sub-screen. The display device 10 does not need to set up an independent sub-screen, thereby reducing production costs. At the same time, the display device 10 does not need to set up a sub-screen wiring harness, thereby reducing the thickness of the display device 10.

[0052] Please refer to Figures 3 to 5 , Figure 3 A cross-sectional view of another example display device in a folded state is shown. Figure 4 An example is shown. Figure 3 A cross-sectional view of the display device in its unfolded state; Figure 5 An example is shown. Figure 3 A magnified schematic diagram of the display device at position B.

[0053] like Figures 3 to 5 As shown, in some optional embodiments, the flexible display panel 100 further includes a fourth portion 140 and a fifth portion 150 connected to each other. The fourth portion 140 is connected to the side of the first portion 110 opposite to the second portion 120, and the fifth portion 150 is located on the side of the fourth portion 140 opposite to the first portion 110. The display device 10 also includes a second support member 220 rotatably connected to the first support member 210, which supports the fifth portion 150.

[0054] Optionally, the display device 10 further includes a rotating member 300, to which the first support member 210 and the second support member 220 are rotatably connected. The rotating member 300 can be a pivot and / or a hinge; in this embodiment, the pivot is used as an example.

[0055] Optionally, the second portion 120 is located on the side of the first support member 210 opposite to the rotating member 300, and the rotating member 300 is located between the second support member 220 and the first support member 210 and is disposed corresponding to the fourth portion 140. The second support member 220 and the first support member can rotate relative to the rotating member 300, so that the display device 10 has a folded state and an unfolded state. In the unfolded state, the display surfaces of the fifth portion 150 and the first portion 110 are flush, and the fifth portion 150, the fourth portion 140 and the first portion 110 together constitute a large display area, which can be used as the main display area. In the folded state, the fifth portion 150 and the first portion 110 are bent relative to each other through the fourth portion 140, such that the first surface 211 of the first support member 210 faces the second support member 220, and the fifth portion 150 and the first portion 110 are located between the second support member 220 and the first support member 210, with the light-emitting side of the fifth portion 150 facing the light-emitting side of the first portion 110. At this time, the third portion 130 can serve as the main display area. By enabling the display device 10 to have a folded state and an unfolded state, the display device 10 has a larger display area in the unfolded state, and is more convenient to carry or store in the folded state.

[0056] The type of display device 10 is not limited. For example, the display device 10 can be a display screen for a foldable mobile phone or a display screen for a foldable tablet computer. The first support member 210 and the second support member 220 can serve as a base for supporting the flexible display panel 100. The materials of the first support member 210 and the second support member 220 include metals, metal oxides, organic compounds, etc., such as aluminum, stainless steel, tempered glass, and hard ceramics. In the display device 10 provided in this application embodiment, by making both the second support member 220 and the first support member 210 rotatably connected to the rotating member 300, and by making the second support member 220 and the first support member 210 respectively support the fifth part 150 and the first part 110, the display device 10 can switch between a folded state and an unfolded state.

[0057] Please refer to Figure 6 , Figure 6 An example is shown. Figure 5 The diagram shows an enlarged view of the display device at position C. Dashed lines indicate the boundaries between sections, subsections, and sub-sections. These dashed lines do not define the structure of the flexible display panel 100; sections, subsections, and sub-sections can be integrated.

[0058] like Figure 6 As shown, in some optional embodiments, the first support 210 further includes a third surface 213, which connects the first surface 211 and the second surface 212, and supports the second portion 120.

[0059] Optionally, the third surface 213 is the side surface of the first support member 210. It can also be understood as the surface of the frame of the first support member 210.

[0060] In the display device 10 provided in this application embodiment, by making the third surface 213 the side surface of the first support member 210 and exposing the second portion 120, the second portion 120 located at the frame of the first support member 210 can also serve as an additional display area, thereby improving the screen ratio and functionality of the display device 10.

[0061] In some alternative embodiments, the third surface 213 may include a first sub-surface 214, which is an arc surface, and the second portion 120 may include a first sub-portion 121, with the first sub-surface 214 supporting the first sub-portion 121.

[0062] Optionally, the first surface 211 and the second surface 212 are connected by two sequentially arranged first sub-surfaces 214, and the first portion 110 and the third portion 130 are connected by two sequentially arranged first sub-parts 121. The two first sub-surfaces 214 have equal radii, and the two first sub-parts 121 are also arc-shaped with equal radii. The first sub-surfaces 214 and the first sub-parts 121 are arranged in a one-to-one correspondence.

[0063] Optionally, the two first sub-surfaces 214 are directly connected. The radius of the first sub-surface 214 (dimension r in the figure) is equal to half the distance between the first surface 211 and the second surface 212 (dimension L in the figure), and the radius of the first sub-part 121 (dimension R in the figure) is greater than the radius r of the first sub-surface 214. The third surface 213 can be understood as the arc-shaped border on the first support member 210. It should be noted that since the first sub-part 121 has thickness, its radius R represents the radius of the thickness position in the middle of the first sub-part 121.

[0064] Please refer to Figure 7 and Figure 8 , Figure 7 Another example is shown Figure 5 A magnified structural diagram of the display device at position C; Figure 8 This shows yet another example. Figure 5 The enlarged structural diagram of the display device at position C is shown in the image.

[0065] In some alternative embodiments, the third surface 213 may further include a second sub-surface 215, which connects the two first sub-surfaces 214. The second portion 120 may further include a second sub-portion 122, which connects the two first sub-portions 121, and the second sub-surface 215 supports the second sub-portion 122.

[0066] Optionally, the second sub-surface 215 is a plane (e.g., Figure 7 (as shown) or an arc surface (such as) Figure 8 As shown). Figure 7 As shown, when the second sub-surface 215 is planar, the second sub-part 122 is also flat, and the third surface 213 can be a vertical frame on the first support member 210. At this time, the radius of the first sub-surface 214 (dimension r in the figure) is less than half of the distance between the first surface 211 and the second surface 212 (dimension L in the figure), and the radius of the first sub-part 121 (dimension R in the figure) is greater than the radius of the first sub-surface 214 and less than half of the distance between the first surface 211 and the second surface 212 (dimension L in the figure).

[0067] like Figure 8As shown, when the second sub-surface 215 is an arc surface, the second sub-part 122 is also arc-shaped. The radius of the first sub-surface 214 (dimension r in the figure) is smaller than the radius of the second sub-surface 215 (dimension r2 in the figure), and the radius of the first sub-surface 214 (dimension r in the figure) is smaller than half the distance between the first surface 211 and the second surface 212 (dimension L in the figure). The radius of the second sub-surface 215 (dimension r2 in the figure) is smaller than the radius of the second sub-part 122 (dimension R2 in the figure). It should be noted that since the second sub-part 122 has thickness, its radius R represents the radius at the middle thickness position of the second sub-part 122.

[0068] Optionally, the first sub-surface 214 is provided and abuts against the first sub-part 121 in a one-to-one correspondence, and the second sub-surface 215 abuts against the second sub-part 122.

[0069] Please refer to Figure 9 , Figure 9 Another example is shown. Figure 5 The enlarged structural diagram of the display device at position C is shown in the image.

[0070] like Figure 9 As shown, in some optional embodiments, a first filler adhesive 400 is provided between the third surface 213 and the second portion 120.

[0071] Optionally, at least a portion of the first filler 400 is located between the first sub-surface 214 and the first sub-part 121.

[0072] Optionally, the third surface 213 includes two first sub-surfaces 214 and a second sub-surface 215 connecting the two first sub-surfaces 214. The second sub-surface 215 is a planar or arc-shaped surface. The second portion 120 includes only two first sub-parts 121. Since a first filler adhesive 400 is provided between the third surface 213 and the second portion 120, the second portion 120 does not need to be tightly attached to the third surface 213, and the second portion 120 may not require a second sub-part 122 corresponding to the second sub-surface 215. The radius of the first sub-surface 214 (dimension r in the figure) is less than half the distance between the first surface 211 and the second surface 212 (dimension L in the figure), and the radius of the first sub-part 121 (dimension R in the figure) is greater than half the distance between the first surface 211 and the second surface 212 (dimension L in the figure).

[0073] In the display device 10 provided in this application embodiment, since a first filler adhesive 400 is provided between the third surface 213 and the second portion 120, the second portion 120 does not need to be tightly attached to the third surface 213. It can be directly applied to the existing first support member 210 without customizing the third surface 213 of the first support member 210. The first filler adhesive 400 is simply filled into the gap between the third surface 213 and the second portion 120 to support the second portion 120, significantly reducing design costs. Furthermore, by providing the first filler adhesive 400 between the third surface 213 and the second portion 120, the stress distribution at the second portion 120 can be adjusted by changing the thickness and material of the first filler adhesive 400, thereby increasing the design freedom of the display device 10.

[0074] Please refer to Figure 10 , Figure 10 Another example is shown. Figure 5 The enlarged structural diagram of the display device at position C is shown in the image.

[0075] like Figure 10 As shown, in some alternative embodiments, the third surface 213 may further include a second sub-surface 215, which connects the two first sub-surfaces 214. The second portion 120 may further include a second sub-portion 122, which connects the two first sub-portions 121. At least a portion of the first filler 400 is located between the second sub-surface 215 and the second sub-portion 122.

[0076] The radius of the first sub-surface 214 (dimension r in the figure) and the radius of the first sub-part 121 (dimension R in the figure) are both less than half the distance between the first surface 211 and the second surface 212 (dimension L in the figure), and the radius of the first sub-part 121 (dimension R in the figure) is greater than the radius of the first sub-surface 214 (dimension r in the figure).

[0077] Optionally, at least a portion of the first filler 400 is located between the first sub-surface 214 and the first sub-part 121.

[0078] Optionally, the shape of the second sub-surface 215 may be the same as or different from the shape of the second sub-part 122.

[0079] Please refer to Figure 11 , Figure 11 Another example is shown. Figure 5 The enlarged structural diagram of the display device at position C is shown in the image.

[0080] like Figure 11As shown, in some optional embodiments, the first support member 210 is provided with a receiving hole 216 that extends through the first support member 210 along the line connecting the first surface 211 and the second surface 212 (the z direction in the figure). At least a portion of the second portion 120 passes through the receiving hole 216 and connects the first portion 110 and the third portion 130. The third surface 213 is the side of the first support member 210 facing the receiving hole 216.

[0081] In the display device 10 provided in this application embodiment, by providing a receiving hole 216 on the first support member 210, the second portion 120 is folded to the back of the first support member 210 through the receiving hole 216, so that at least part of the first support member 210 is located on the periphery of the second portion 120. When the display device 10 is dropped or bumped, the first support member 210 can serve as the impact force point and protect the second portion 120 of the receiving hole 216, thereby improving the drop resistance of the flexible display panel 100 and the display device 10.

[0082] Please refer to Figure 12 and Figure 13 , Figure 12 A partial cross-sectional view of an example flexible display panel is shown. Figure 13 A partial cross-sectional view of another example of a flexible display panel is shown.

[0083] In some optional embodiments, the flexible display panel 100 includes a flexible screen body 160 and a protective layer 170 located on at least one side of the flexible screen body 160. The protective layer 170 has a groove 171 on the side facing the first support member 210, at least a portion of the groove 171 is located in the second portion 120, and the depth of the groove 171 gradually increases and then gradually decreases along the direction away from the first portion 110 (e.g., ...). Figure 12 (As shown). Alternatively, the protective layer 170 includes two spaced-apart sub-support portions 172, with a notch 173 formed between the two sub-support portions 172, at least a portion of the notch 173 being located in the second portion 120 (as shown). Figure 13 (As shown).

[0084] Optionally, the depth of the groove 171 is deepest at the center line of the second portion 120, and gradually decreases towards the first portion 110 and the third portion 130. Alternatively, the thickness of the protective layer 170 can be understood as being thinnest at the center line of the second portion 120, and gradually increasing towards the first portion 110 and the third portion 130.

[0085] Optionally, the groove 171 is filled with a second filler adhesive 500, the material of which can be the same as that of the first filler adhesive 400. The hardness of the second filler adhesive 500 is less than that of the protective layer 170. Preferably, the second filler adhesive 500 is made of an elastic material, such as optical adhesive or liquid optical adhesive.

[0086] Optionally, the notch 173 is filled with a second filler adhesive 500, the material of which can be the same as that of the first filler adhesive 400. The hardness of the second filler adhesive 500 is less than that of the protective layer 170. Preferably, the second filler adhesive 500 is made of an elastic material, such as optical adhesive or liquid optical adhesive.

[0087] By providing a second filler 500 in the groove 171 or notch 173, the second filler 500 is used to absorb bending stress when the protective layer 170 is bent, thereby reducing the probability of defects occurring when the flexible display panel 100 is bent, and thus improving the yield of the display device 10.

[0088] In the display device 10 provided in this application embodiment, the protective layers 170 located on both sides of the flexible screen 160 can be used to support the flexible screen. By placing the groove 171 or the notch 173 in the second part 120, the supporting force of the protective layer 170 on the flexible screen 160 at the second part 120 is reduced, the rebound force is reduced, the stress concentration at the second part 120 is reduced, and the risk of breakage at the second part 120 is reduced, thereby improving the reliability of the flexible display panel. The flexible screen 160 experiences the greatest stress at the centerline of the second section 120. By making the depth of the groove 171 the deepest at the centerline of the second section 120 and gradually decreasing towards the first section 110 and the third section 130, the supporting force of the protective layer 170 on the flexible screen 160 matches the stress of the flexible screen 160. In areas with high bending stress, the groove 171 is deeper, and in areas with low bending stress, the groove 171 is shallower, further reducing the risk of breakage at the second section 120 and improving the fit between the protective layer 170 and the flexible screen 160.

[0089] Please refer to Figures 14 to 17 , Figure 14 A schematic diagram of a partial cross-sectional structure of an example flexible display panel after it has been flattened is shown. Figure 15 A schematic diagram showing a partial cross-sectional view of another example of a flexible display panel after it has been flattened. Figure 16 A partial cross-sectional view of another example of a flexible display panel is shown. Figure 17 A partial cross-sectional view of another example of a flexible display panel is shown.

[0090] In some optional embodiments, protective layers 170 are provided on both sides of the flexible screen 160. The protective layer 170 on the side of the flexible screen 160 facing away from the first support member 210 is a cover plate, and the material of the cover plate includes flexible glass, colorless polyimide (CPI) or polyethylene terephthalate (PET). The protective layer 170 on the side of the flexible screen 160 facing the first support member 210 is a bracket, and the material of the bracket includes metal or metal oxide, such as rigid materials like aluminum alloy.

[0091] Optionally, the cover plate and the bracket are located on opposite sides of the flexible screen 160. When the cover plate has a groove 171, the opening of the groove 171 is located on the side of the cover plate facing the flexible screen 160. When the bracket has a groove 171, the opening of the groove 171 is located on the side of the bracket away from the flexible screen 160, that is, on the side facing the first support member 210. Since the flexible display panel 100 bends towards the first support member 210 at the second portion 120, the bendability of the bracket and cover plate is improved by providing the groove 171 on the side of the bracket and cover plate facing the first support member 210.

[0092] Optionally, the rigidity of the bracket is greater than that of the cover plate, and the rigidity of the cover plate is greater than that of the second filler adhesive 500. During the bending process of the flexible display panel 100, the bracket, as a component with fixed curvature, determines the final bending radius of the flexible display panel 100. Specifically, the flattened flexible screen 160 and the cover plate are attached to the surface of the bracket by a mechanism such as pressing rollers, and are bent along the surface of the bracket by pressing pressure. After bending, the cover plate protects the light-emitting side of the flexible screen 160, reducing the probability of damage to the flexible screen 160 due to external forces, thereby improving the service life of the flexible screen 160.

[0093] Optional, such as Figure 14 and Figure 15 As shown, both sides of the protective layer 170 are provided with grooves 171. The grooves 171 can be arc-shaped grooves (such as...). Figure 14 (as shown) or conical groove (such as) Figure 15 (As shown).

[0094] Optional, such as Figure 16 As shown, there are notches 173 on both sides of the protective layer 170.

[0095] Optional, such as Figure 17 As shown, one of the protective layers 170 has a groove 171, and the other protective layer 170 has a notch 173.

[0096] Please continue to refer to this. Figure 13In some optional embodiments, the protective layer 170 located on the side of the flexible screen 160 away from the first support member 210 includes two sub-support portions 172 spaced apart. The material of the sub-support portion 172 located on the side of the third section 130 includes flexible glass, such as ultra-thin glass (UTG) or unequal-thickness flexible glass (UFG). The material of the sub-support portion 172 located on the side of the first section 110 includes plastic colorless polyimide CPI or polyethylene terephthalate PET, or flexible glass.

[0097] In the display device 10 provided in this application embodiment, the first part 110 is used as an inner screen and the third part 130 is used as an outer screen. By making the material of the sub-support part 172 located in the third part 130 include flexible glass, the flexible glass has higher strength and can reduce the probability of damage to the outer screen when used as an outer screen. The material of the sub-support part 172 located in the first part 110 includes colorless polyimide CPI or polyethylene terephthalate PET. CPI and PET have a better tactile feel and can significantly improve the user experience when applied to the inner screen.

[0098] The second aspect of this application also provides a mobile terminal, including the display device of any of the first aspect embodiments described above. Since the mobile terminal provided in the second aspect of this application includes the display device of any of the first aspect embodiments described above, it has the beneficial effects of the display device of any of the first aspect embodiments described above, which will not be elaborated further here.

[0099] The mobile terminals in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-readers, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0100] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A display device, characterized in that, include: A flexible display panel includes a first section, a second section, and a third section arranged and connected in sequence, wherein the third section is bent to the backlight side of the first section through the second section; The first support member includes a first surface and a second surface disposed opposite to each other, and a third surface connecting the first surface and the second surface. The first surface and the second surface respectively support the first portion and the third portion, and the third surface supports the second portion. The first support member has a receiving hole that extends through the first support member along the line connecting the first surface and the second surface. At least a portion of the second portion passes through the receiving hole and connects the first portion and the third portion. The third surface is the side of the first support member facing the receiving hole.

2. The display device according to claim 1, characterized in that, The third surface includes a first sub-surface, which is an arc surface, and the second portion includes a first sub-portion, which is supported by the first sub-surface.

3. The display device according to claim 2, characterized in that, The first surface and the second surface are connected by two sequentially arranged first sub-surfaces, and the first portion and the third portion are connected by two sequentially arranged first sub-portions.

4. The display device according to claim 2, characterized in that, The third surface further includes a second sub-surface, which connects two first sub-surfaces. The second portion further includes a second sub-part, which connects two first sub-parts. The second sub-surface supports the second sub-part.

5. The display device according to claim 4, characterized in that, The second sub-surface is an arc surface or a plane.

6. The display device according to claim 4, characterized in that, The first sub-surface abuts against the first sub-part, and the second sub-surface abuts against the second sub-part.

7. The display device according to claim 2, characterized in that, A first filler adhesive is provided between the third surface and the second portion.

8. The display device according to claim 7, characterized in that, At least a portion of the first filler adhesive is located between the first sub-surface and the first sub-part.

9. The display device according to claim 7, characterized in that, The third surface further includes a second sub-surface, which connects two first sub-surfaces. The second portion further includes a second sub-part, which connects two first sub-parts. At least a portion of the first filler adhesive is located between the second sub-surface and the second sub-part.

10. The display device according to claim 1, characterized in that, The flexible display panel includes a flexible screen body and a protective layer located on at least one side of the flexible screen body; The protective layer has a groove on the side facing the first support member, and at least part of the groove is located in the second portion. The depth of the groove gradually increases and then gradually decreases along the direction away from the first portion. Alternatively, the protective layer includes two spaced-apart sub-supports with a gap between them, at least part of which is located in the second portion.

11. The display device according to claim 10, characterized in that, The flexible screen has protective layers on both sides. The material of the protective layer on the side of the flexible screen away from the first support member includes flexible glass, colorless polyimide or polyethylene terephthalate, and the material of the protective layer on the side of the flexible screen facing the first support member includes metal or metal oxide.

12. The display device according to claim 11, characterized in that, The protective layer located on the side of the flexible screen away from the first support member includes two spaced-apart sub-supports. The material of the sub-support in the third part includes flexible glass, and the material of the sub-support in the first part includes colorless polyimide or polyethylene terephthalate.

13. The display device according to claim 1, characterized in that, The flexible display panel further includes a fourth portion and a fifth portion that are connected to each other. The fourth portion is connected to the side of the first portion opposite to the second portion, and the fifth portion is located on the side of the fourth portion opposite to the first portion. The display device further includes a second support member rotatably connected to the first support member, the second support member supporting the fifth portion.

14. The display device according to claim 13, characterized in that, The display device further includes a rotating component, to which the first support component and the second support component are rotatably connected.

15. The display device according to claim 14, characterized in that, The second portion is located on the side of the first support member opposite to the rotating member.

16. A mobile terminal, characterized in that, Includes the display device as described in any one of claims 1-15.

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