Display device and electronic apparatus

Abstract

The invention provides a display device and electronic equipment, and the device comprises a flexible screen which is provided with a display surface; the rotating shaft assembly is arranged on the side, away from the display face, of the flexible screen, a gap is formed between the rotating shaft assembly and the flexible screen, and the flexible screen can rotate with the rotating shaft assembly as the axis to be in a folded state or an unfolded state; and a protective sheet provided in the gap. The rotating shaft assembly is arranged on one side of the flexible screen, so that the flexible screen can rotate with the rotating shaft assembly as the axis to be in a folded state or an unfolded state. Moreover, the protective sheet is arranged in the gap between the rotating shaft assembly and the flexible screen, so that foreign matters such as dust can be effectively prevented from entering the gap, the foreign matters such as dust are prevented from puncturing or hurting the flexible screen, the effect of protecting the flexible screen is achieved, and the folding reliability of a user for using the mobile phone is improved.

Description

Technical Field

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

[0002] With the continuous development of technology, foldable mobile terminals (such as foldable mobile phones, foldable tablet computers, etc.) have increasingly appeared in people's work and life. As an important component of foldable mobile terminals, the flexible screen has two states during use: folded and unfolded.

[0003] In the related art, the flexible screen of the electronic device realizes the functions of folding and unfolding by cooperating with the folding hinge. However, the cooperation between the flexible screen and the folding hinge will cause many problems. For example, foreign objects such as dust will enter from the matching area between the flexible screen and the folding hinge. Foreign objects will pierce or scratch the screen, causing problems such as colored spots and black spots on the screen. Summary of the invention

[0004] The present application provides a display device and an electronic device, which can solve the problem of foreign objects damaging the flexible screen.

[0005] In a first aspect, the present application provides a display device, comprising:

[0006] A flexible screen having a display surface;

[0007] A hinge assembly is arranged on a side of the flexible screen away from the display surface, with a gap between the hinge assembly and the flexible screen, wherein the flexible screen can rotate around the hinge assembly as an axis to present a folded state or an unfolded state; and

[0008] A protective sheet is arranged in the gap.

[0009] In a second aspect, the present application provides a display device, including:

[0010] A flexible screen having a display surface, wherein a side of the flexible screen facing away from the display surface is used to be connected to a rotating shaft assembly, and the flexible screen can rotate around the rotating shaft assembly to present a folded state or an unfolded state; and

[0011] A protective sheet is attached to the flexible screen. When the rotating shaft assembly is connected to the flexible screen, there is a gap between the flexible screen and the rotating shaft assembly, and the protective sheet is located in the gap.

[0012] In a third aspect, the present application provides an electronic device, comprising a housing and a display device, wherein the display device is assembled in the housing, and the display device is the display device as described above.

[0013] The present application provides a display device and an electronic device, wherein a rotating shaft assembly is arranged on one side of a flexible screen, so that the flexible screen can rotate with the rotating shaft assembly as an axis to present a folded state or an unfolded state. In addition, a protective sheet is arranged in the gap between the rotating shaft assembly and the flexible screen, so that dust and other foreign objects can be effectively prevented from entering the gap, and dust and other foreign objects can be prevented from piercing or piercing the flexible screen, thereby protecting the flexible screen and increasing the folding reliability of the mobile phone for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0015] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0016] Figure 1 A schematic diagram of the structure of an electronic device in a folded state provided in an embodiment of the present application.

[0017] Figure 2 A schematic diagram of the structure of an electronic device in an unfolded state provided in an embodiment of the present application.

[0018] Figure 3 A schematic diagram of the structure of a display device in an unfolded state provided in an embodiment of the present application.

[0019] Figure 4 This is a schematic diagram of the first structure of the display device provided in an embodiment of the present application when in a folded state.

[0020] Figure 5 A second structural schematic diagram of the display device provided in an embodiment of the present application in a folded state.

[0021] Figure 6 An exploded view of a display device provided in an embodiment of the present application.

[0022] Figure 7 An exploded diagram of the flexible screen provided in an embodiment of the present application.

[0023] Figure 8 A schematic diagram of the structure of the flexible screen and protective sheet provided in an embodiment of the present application.

[0024] Fig. 9 Another schematic diagram of the structure of the protective sheet provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0026] The embodiments of the present application provide a display device and an electronic device, which can solve the problem of foreign matter damaging a flexible screen. This will be described below with reference to the accompanying drawings.

[0027] It is understood that the "electronic device" (or simply "terminal") used herein includes but is not limited to a device configured to receive / send communication signals via a wired connection and / or via a wireless communication network such as a cellular network, a wireless local area network, etc. Examples of mobile terminals include but are not limited to cellular phones and conventional laptop and / or palmtop receivers or other electronic devices including a radio telephone transceiver. A mobile phone is an electronic device configured with a cellular communication module.

[0028] For example, the electronic device provided in the embodiment of the present application may be a portable device such as a mobile phone, a tablet computer, a laptop computer, and a wearable device. The wearable device may be a smart watch, a smart bracelet, etc. Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of an electronic device in a folded state provided by an embodiment of the present application, Figure 2 The electronic device 100 may include a housing 10 and a display device 20. The display device 20 is disposed on the housing 10 and may be used to display a picture. The display device 20 is a foldable display device, that is, the display device 20 may be in two states, folded and unfolded, during use.

[0029] The housing 10 is a main protection and support component of the display device 20. The housing 10 may include a middle frame (not shown) and a rear housing (not shown). The display device 20 may be covered on one side of the middle frame, and the rear housing may be provided on the other side of the middle frame. For example, the display device 20 and the rear housing may be covered on two opposite sides of the middle frame by bonding, welding, or clamping.

[0030] Exemplarily, the middle frame may include a middle plate of an integral structure and a frame surrounding at least a portion of the outer periphery of the middle plate, and the two may be integrally formed by injection molding, stamping molding, heat absorption molding, and the like. Among them, the frame may be formed by extending the side wall of the middle plate in the thickness direction of the middle plate, so that the two sides of the middle frame that are relatively arranged may form corresponding open structures. The display device 20 and the back shell may respectively cover the open structures on the opposite sides of the middle frame. In some embodiments, the middle plate and the frame may also be two independent structural members, and the two may be connected by one of the assembly methods such as snap-on, bonding, and welding, and a combination thereof. Alternatively, the middle frame may also include only a frame.

[0031] The material of the back shell can be glass, metal, hard plastic, etc., or it can be made of other electrochromic materials. Among them, the back shell has a certain structural strength, and is mainly used to protect the electronic device 100. Correspondingly, the material of the middle frame can also be glass, metal, hard plastic, etc. The middle frame also has a certain structural strength, and is mainly used to support and fix the functional components installed between the middle frame and the back shell. For example, the battery, mainboard and antenna of the electronic device 100. It can be understood that the mainboard can be the main control circuit board of the electronic device 100. A processor can be integrated on the mainboard, and one or more of the functional components such as the headphone jack, acceleration sensor, gyroscope, motor, etc. can also be integrated. The processor on the mainboard can control the display device, etc.

[0032] A battery (not shown) may be disposed in the housing, and the battery may be electrically connected to the mainboard so that the battery can power the electronic device 100. A battery management circuit may be disposed on the mainboard (not shown). The battery management circuit is used to distribute the voltage provided by the battery to various electronic devices in the electronic device 100.

[0033] Furthermore, the material of the middle frame and the back shell can preferably have certain properties such as wear resistance, corrosion resistance and scratch resistance, or a layer of functional material for wear resistance, corrosion resistance and scratch resistance can be coated on the outer surface of the middle frame and the back shell (that is, the outer surface of the electronic device 100).

[0034] Understandable, see Figure 3 and Figure 4 Combined with Figure 1 and Figure 2 , Figure 3 This is a schematic diagram of the structure of the display device provided in an embodiment of the present application in an unfolded state. Figure 4A first structural schematic diagram of a display device in a folded state provided in an embodiment of the present application. The display device 20 is a foldable display device, which may include a flexible screen 21 and a hinge assembly 22, wherein the flexible screen 21 has a display surface 21a, and the display surface 21a is used to display a picture. The hinge assembly 22 is arranged on the side of the flexible screen 21 away from the display surface 21a, wherein, since the flexible screen 21 has a certain flexibility, the flexible screen 21 can rotate with the hinge assembly 22 as the axis to present a folded state or an unfolded state. It can be understood that there is a gap 23 between the hinge assembly 22 and the flexible screen 21 to facilitate the unfolding or folding of the flexible screen 21.

[0035] It should be noted that since there is a gap 23 between the hinge assembly 22 and the flexible screen 21, foreign matter such as dust outside the display device 20 will enter the gap 23. As the display device 20 is unfolded and folded during use by the user, the accumulation of foreign matter will gradually increase. Excessive foreign matter will pierce or damage the flexible screen 21, causing problems such as colored spots and black spots to appear on the flexible screen 21.

[0036] Based on this, see Figure 5 Combined with Figure 4 , Figure 5 The second structural diagram of the display device provided in the embodiment of the present application in the folded state. The display device 20 provided in the embodiment of the present application also includes a protective sheet 24, which is arranged in the gap 23 between the hinge assembly 22 and the flexible screen 21, so as to effectively prevent foreign objects such as dust from entering the gap 23, and prevent foreign objects such as dust from piercing or piercing the flexible screen 21, thereby protecting the flexible screen 21 and increasing the folding reliability of the mobile phone for users.

[0037] It should also be noted that in the related art, in order to prevent foreign objects from piercing or stabbing the flexible screen, the overall thickness of the flexible screen is usually directly increased. In this way, although the strength of the flexible screen can be improved, the increase in the overall thickness of the flexible screen will lead to an increase in the weight of the flexible screen, which in turn leads to the weight of the entire display device being too heavy and unable to be thin and light. In addition, the increase in the overall thickness of the flexible screen will also increase the rebound force of the flexible screen, which in turn affects the opening and closing feel of the entire display device. However, the present application provides a protective sheet 24 in the gap 23 between the hinge assembly 22 and the flexible screen 21, thereby effectively preventing foreign objects such as dust from entering the gap 23, preventing foreign objects such as dust from piercing or stabbing the flexible screen 21, and playing a role in protecting the flexible screen 21. There is no need to change the overall thickness of the flexible screen 21, and thus the flexible screen 21 can be protected without affecting the thickness, weight and opening and closing feel of the display device 20, thereby ensuring the integrity of the function of the flexible screen 21.

[0038] In order to more clearly illustrate the structure of the flexible screen 21, the specific structure of the flexible screen 21 will be described in detail below with reference to the accompanying drawings.

[0039] See also Figures 3 to 5 , the flexible screen 21 may include a first portion 211, a second portion 212 and a bending portion 213, the bending portion 213 is connected between the first portion 211 and the second portion 212, and the bending portion 213 can be deformed when the flexible screen 21 rotates. In other words, the first portion 211 and the second portion 212 are arranged side by side, and the first portion 211 and the second portion 212 are arranged at intervals, the bending portion 213 has a first side edge and a second side edge opposite to each other, the first side edge of the bending portion 213 is connected to the first portion 211, and the second side edge of the bending portion 213 is connected to the second portion 212. It can be understood that the first portion 211 and the second portion 212 can be used to display images, and the bending portion 213 plays a role in connecting the first portion 211 and the second portion 212. When the first portion 211 and the second portion 212 are close to each other, the flexible screen 21 is in a folding process, and when the first portion 211 and the second portion 212 are away from each other, the flexible screen 21 is in an unfolding process. When the first part 211 and the second part 212 are stacked on each other, the flexible screen 21 is in a folded state, which may be one of the first part 211 and the second part 212 displaying a picture, such as the display surface of the first part 211 displaying a picture. When the first part 211 and the second part 212 are in the same plane, the flexible screen 21 is in an unfolded state, and the first part 211 and the second part 212 together form a display surface for displaying a picture. It can also be understood that the first part 211 and the second part 212 may also have an angle, such as the flexible screen 21 may be in a state where the first part 211 and the second part 212 form an obtuse angle, in which case, it may be one of the first part 211 and the second part 212 displaying a picture, or the first part 211 and the second part 212 together form a display surface for displaying a picture.

[0040] Among them, there is a gap 23 between the hinge assembly 22 and the bent part 213 of the flexible screen 21, and a protective sheet 24 is arranged in the gap 23 to prevent foreign matter such as dust from entering the gap 23, to prevent foreign matter such as dust from piercing or damaging the first part 211 and the second part 212 of the flexible screen 21, thereby protecting the flexible screen 21 and increasing the folding reliability of the mobile phone for users.

[0041] Among them, Figure 3As shown, the hinge assembly 22 serves as a component to ensure the stable rotation of the flexible screen 21. It can be understood that the hinge assembly 22 includes a hinge body 221, a first rotating end 222 and a second rotating end 223. The hinge body 221 is located on the side where the bending part 213 of the flexible screen 21 is located, the first rotating end 222 is rotatably connected to one end of the hinge body 221 and connected to the first part 211 of the flexible screen 21, and the second rotating end 223 is rotatably connected to the other end of the hinge body 221 and connected to the second part 212 of the flexible screen 21. In this way, the flexible screen 21 can be stably folded and unfolded through the hinge assembly 22.

[0042] Understandable, such as Figure 2 As shown, the housing 10 at least includes a first structure 11 and a second structure 12 that rotate relative to each other. The first structure 11 carries a first portion 211 , and the second structure 12 carries a second portion 212 .

[0043] It can also be understood that when the flexible screen 20 is in a folded state, the housing 10 is also in a folded state, and when the flexible screen 20 is in an unfolded state, the housing 10 is also in an unfolded state. Figure 1 , that is, the state finally formed by the relative movement of the first structure 11 and the second structure 12 in the direction of approaching each other. Figure 2 , that is, a state formed by relative movement of the first structure 11 and the second structure 12 in directions away from each other.

[0044] When the electronic device 100 is in the unfolded state, the first structure 11 and the second structure 12 are away from each other, and this state of the first structure 11 and the second structure 12 can be understood as being in the unfolded state. When the electronic device 100 is in the folded state, the first structure 11 and the second structure 12 are stacked together, and this state of the first structure 11 and the second structure 12 can be understood as being in the folded state.

[0045] For example, the electronic device 100 is a rectangular parallelepiped in the folded state. Figure 1 , when the electronic device 100 is in a folded state, the width direction is the first direction (or X direction), the length direction is the second direction (or Y direction), and the X direction and the Y direction are parallel to the display surface. Among them, when the electronic device 100 is in an unfolded state, the first part and the second part are arranged side by side in the first direction (or X direction). The axis of the hinge assembly is parallel to the second direction (or Y direction). In other words, the rotation axis of the flexible screen when folded or unfolded is parallel to the second direction (or Y direction).

[0046] It can be understood that the bending portion 213 of the flexible screen 21 has a certain elasticity, or in other words, the bending portion 213 of the flexible screen 21 has a certain stretchability to facilitate the folding or unfolding of the flexible screen 21 .

[0047] Among them, see Figure 6 , Figure 6 An exploded view of a display device provided in an embodiment of the present application. The bent portion 213 is provided with a second mesh structure 2131, which can reduce the internal stress of the bent portion 213 when folded or unfolded, thereby making the flexible screen 21 more labor-saving when folded or unfolded. It can be understood that there are a number of holes in the grid-like structure. When the flexible screen 21 changes from an unfolded state to a folded state, the bent portion 213 of the flexible screen 21 is subjected to lateral tension, and the holes can expand to both sides, thereby stretching the grid-like structure area. When the lateral tension on the flexible screen 21 is removed, that is, when the flexible screen 21 returns to the unfolded state, the holes return to their original state, and the grid-like structure area shrinks to its original state. Among them, the mesh shape, size and number of the second mesh structure 2131 can be designed according to the bending radius and mechanical distribution of the whole machine.

[0048] It can also be understood that the flexible screen 21 is a multi-layer structure, such as, see Figure 7 , Figure 7 An exploded view of a flexible screen provided in an embodiment of the present application. The flexible screen 21 includes a display layer 214 and a support layer 215. The display layer 214 includes a display surface and a non-display surface that are arranged opposite to each other, and the support layer 215 is attached to the non-display surface of the display layer 214. The support layer 215 can be attached to the display layer 214 by gluing, for example, the support layer 215 can be attached to the display layer 214 by one or more of silica gel and foam glue.

[0049] The support layer 215 includes a first sub-portion 2151, a second sub-portion 2152 and a bending sub-portion 2153, wherein the bending sub-portion 2153 is connected between the first sub-portion 2151 and the second sub-portion 2152, and the bending sub-portion 2153 can be deformed when the flexible screen 21 rotates. In other words, the first sub-portion 2151 and the second sub-portion 2152 are arranged side by side, and the first sub-portion 2151 and the second sub-portion 2152 are arranged at intervals, and the bending sub-portion 2153 has a first side edge and a second side edge opposite to each other, and the first side edge of the bending sub-portion 2153 is connected to the first sub-portion 2151, and the second side edge of the bending sub-portion 2153 is connected to the second sub-portion 2152. It can be understood that the bending sub-portion 2153 plays a role in connecting the first sub-portion 2151 and the second sub-portion 2152, and the first sub-portion 2151, the second sub-portion 2152 and the bending sub-portion 2153 are used to support the display layer 214. When the first sub-portion 2151 and the second sub-portion 2152 are close to each other, the flexible screen 21 is in the folding process, and when the first sub-portion 2151 and the second sub-portion 2152 are away from each other, the flexible screen 21 is in the unfolding process. It can also be understood that the first sub-portion 2151 and the second sub-portion 2152 can also have an angle, such as the flexible screen 21 can be in a state where the first sub-portion 2151 and the second sub-portion 2152 form an obtuse angle.

[0050] It can also be understood that the gap 23 between the hinge assembly 22 and the bending portion 213 of the flexible screen 21 is the gap between the hinge assembly 22 and the bending sub-portion 2153 of the flexible screen 21, and the protective sheet 24 is arranged in the gap between the hinge assembly 22 and the bending sub-portion 2153 of the flexible screen 21.

[0051] Among them, the bending sub-portion 2153 is provided with a second mesh structure 2131, and the bending sub-portion 2153 has a certain elasticity, or the bending sub-portion 2153 has a certain elasticity. Through the stretching of the grid structure area, the flexible display layer 214 can be more softly covered to avoid severe squeezing of the display layer 214, thereby ensuring the structural integrity and normal use function of the flexible screen 21 and improving the service life of the flexible screen 21.

[0052] The above is an introduction to the specific structure of the flexible screen 21. In order to more clearly illustrate the coordination relationship between the protective sheet and the flexible screen 21, the protective sheet and its related components will be specifically described below with reference to the accompanying drawings.

[0053] See also Figure 8 , Figure 8 This is a schematic diagram of the structure of the flexible screen and protective sheet provided in the embodiment of the present application. It can be understood that Figure 8The dotted line in is not an actual structure, but a boundary line made to facilitate understanding of the structural distribution of the flexible screen 21. The flexible screen 21 includes a first section 216, a middle section 217, and a second section 218 connected in sequence along a direction parallel to the axis, that is, the flexible screen 21 includes a first section 216, a middle section 217, and a second section 218 connected in sequence along the Y direction. Among them, the protective sheet 24 is provided in at least one section of the first section 216 and the second section 218. In this way, foreign matter such as dust can be prevented from entering from the end of the flexible screen 21 in the Y direction, so as to prevent foreign matter such as dust from piercing or stabbing the flexible screen 21, thereby protecting the flexible screen 21.

[0054] It can be understood that the protective sheet 24 at least covers the bending portion 213 of the flexible screen 21, that is, the protective sheet 24 may only cover the bending portion 213, or may extend laterally to the area outside the bending portion 213, such as one end of the protective sheet 24 extends to the first portion 211 of the flexible screen 21 and is connected to the first portion 211, and the other end of the protective sheet 24 extends to the second portion 212 of the flexible screen 21 and is connected to the second portion 212.

[0055] Preferably, the first section 216 and the second section 218 of the flexible screen 21 are both provided with a protective sheet 24. In this way, dust and other foreign objects can be effectively prevented from entering from the end of the flexible screen 21 in the Y direction, so as to prevent dust and other foreign objects from piercing or piercing the flexible screen 21, thereby protecting the flexible screen 21.

[0056] It should be noted that if a whole layer of protective sheet 24 is provided on the side of the flexible screen 21 away from the display surface, it is equivalent to increasing the overall thickness of the flexible screen 21. In this way, although the strength of the flexible screen 21 can be improved, the weight of the entire display device 20 will be too heavy and cannot be made thin and light, and the rebound force of the flexible screen 21 will be increased, thereby affecting the opening and closing feel of the entire display device 20. Moreover, providing a whole layer of protective sheet 24 is prone to uneven stress distribution during the folding process.

[0057] Based on this, in some embodiments, the length of the protective sheet 24 in the direction parallel to the axis of the rotating shaft assembly 22 is 15% to 20% of the length of the flexible screen 21 in the direction parallel to the axis. In other words, the length of the protective sheet 24 in the Y direction is 15% to 20% of the length of the flexible screen 21 in the Y direction. For example, the length of the protective sheet 24 in the Y direction is 15%, 16%, 17%, 18%, 19% or 20% of the length of the flexible screen 21 in the Y direction. It can be understood that in the embodiment of the present application, a whole layer of protective sheet 24 is not set in the length direction of the flexible screen 21, but a small section of protective sheet 24 is set, such as a section of protective sheet 24 is set in the first section 216 and the second section 218 of the flexible screen 21, and the protective sheet is located in the gap 23 between the hinge assembly 22 and the flexible screen 21, so as to effectively prevent foreign objects such as dust from entering the gap 23, and avoid foreign objects such as dust from piercing or stabbing the flexible screen 21, thereby playing a role in protecting the flexible screen 21, and there is no need to change the overall thickness of the flexible screen 21, thereby being able to protect the flexible screen 21 without affecting the thickness, weight and opening and closing feel of the display device 20, thereby ensuring the integrity of the function of the flexible screen 21.

[0058] The protective sheet 24 is attached to the flexible screen 21. When the flexible screen 21 is folded or unfolded, the protective sheet 24 is closely attached to the flexible screen 21. In this way, the protective sheet 24 can isolate foreign matter such as dust, thereby effectively preventing foreign matter such as dust from contacting the flexible screen 21 and piercing or stabbing the flexible screen 21. The protective sheet 24 can be attached to the flexible screen 21 by gluing.

[0059] It can be understood that when the flexible screen 21 is a multi-layer structure, that is, the flexible screen 21 includes a display layer 214 and a support layer 215, the protective sheet 24 is attached to the support layer 215. The protective sheet 24 at least covers the bending sub-portion 2153 of the support layer 215, that is, the protective sheet 24 can only cover the bending sub-portion 2153, and can also extend laterally to the area outside the bending sub-portion 2153, such as one end of the protective sheet 24 extends to the first sub-portion 2151 of the support layer 215 and is connected to the first sub-portion 2151, and the other end of the protective sheet 24 extends to the second sub-portion 2152 of the support layer 215 and is connected to the second sub-portion 2152.

[0060] It should be noted that when the flexible screen 21 is a multi-layer structure, that is, the flexible screen 21 includes a display layer 214 and a support layer 215, the bonding process of the protective sheet 24 is: first bond the protective sheet 24 to the support layer 215, and then bond the support layer 215 bonded with the protective sheet 24 to the display layer 214. In this way, damage to the display layer 214 can be prevented when bonding the protective sheet 24.

[0061] The thickness of the protective sheet 24 can be between 0.09 mm and 0.15 mm, for example, the thickness of the protective sheet 24 can be 0.09 mm, 0.10 mm, 0.12 mm or 0.15 mm. The protective sheet 24 with this thickness can not only isolate foreign matter such as dust, but also strengthen the strength of the flexible screen 21, and will not occupy too much space, so that the display device 20 can be made as light and thin as possible.

[0062] Among them, the protective sheet 24 can also be attached to the hinge assembly 22, that is, the protective sheet 24 is attached to both the flexible screen 21 and the hinge assembly 22. In this way, the protective sheet 24 can effectively prevent foreign matter such as dust from entering the gap 23 between the flexible screen 21 and the hinge assembly 22.

[0063] It is understandable that the protective sheet 24 has a certain elasticity, or in other words, the protective sheet 24 has a certain elasticity, so that the protective sheet 24 does not hinder the folding or unfolding of the flexible screen 21. Exemplarily, the protective sheet 24 can be a thermoplastic polyurethane elastomer (Thermoplastic Urethane, referred to as TPU). For example, the protective sheet 24 can be made of TPU material. Among them, TPU is a polymer material formed by the joint reaction of diphenylmethane diisocyanate (MDI), toluene diisocyanate (TDI) and macromolecular polyols and chain extenders. Of course, the protective sheet 24 can also be made of other materials with a certain elasticity and strength.

[0064] Among them, Figure 6 As shown, the protective sheet 24 is provided with a first mesh structure 241, and the mesh structure can reduce the internal stress of the protective sheet 24 when folding or unfolding, thereby making the flexible screen 21 more labor-saving when folding or unfolding. It can be understood that there are a number of holes in the grid-like structure. When the flexible screen 21 changes from an unfolded state to a folded state, the protective sheet 24 of the flexible screen 21 is subjected to lateral tension, and the holes can expand to both sides, so that the grid-like structure area is stretched. When the lateral tension on the flexible screen 21 is removed, that is, when the flexible screen 21 returns to the unfolded state, the holes in the protective sheet 24 return to their original state, and the grid-like structure area shrinks to its original state. Among them, the mesh shape, size and number of the first mesh structure 241 can be designed according to the bending radius and mechanical distribution of the whole machine.

[0065] Exemplarily, the mesh shape of the first mesh structure 241 may be a regular shape such as a rectangle, a diamond, or a circle. Of course, the mesh shape of the first mesh structure 241 may also be an irregular shape, which is not limited in the present application.

[0066] The shape of the first mesh structure 241 of the protective sheet 24 may be the same as the shape of the second mesh structure 2131 of the bent portion 213. In this way, the uniformity of the force applied to the flexible screen 21 during folding or unfolding can be ensured.

[0067] It can be understood that the protective sheet 24 is provided with a first mesh structure 241, and the protective sheet 24 has a certain elasticity, or in other words, the protective sheet 24 has a certain elasticity. Through the stretching of the grid structure area, the flexible screen 21 can be more softly covered, thereby avoiding severe squeezing of the flexible screen 21, ensuring the structural integrity and normal use function of the flexible screen 21, and improving the service life of the flexible screen 21.

[0068] In some embodiments, see Fig. 9 , Fig. 9 Another structural schematic diagram of a protective sheet provided in an embodiment of the present application. The protective sheet 24 may include a first side portion 242, a second side portion 243 and a plurality of connecting ribs 244, the first side portion 242 and the second side portion 243 are arranged at intervals, the first side portion 242 and the second side portion 243 are connected to the flexible screen 21, a plurality of connecting ribs 244 are connected between the first side portion 242 and the second side portion 243, and a plurality of connecting ribs 244 are arranged at intervals. In this way, a hole-like structure is formed between the plurality of connecting ribs 244, which can reduce the internal stress of the protective sheet 24 when folding or unfolding, thereby making the flexible screen 21 more labor-saving when folding or unfolding. It can be understood that when the flexible screen 21 changes from an unfolded state to a folded state, the protective sheet 24 of the flexible screen 21 is subjected to lateral tension, and the cavity can expand to both sides, thereby stretching the hole-like structure area. When the lateral tension on the flexible screen 21 is removed, that is, when the flexible screen 21 returns to the unfolded state, the hole structure of the protective sheet 24 returns to its original state, and the hole structure area shrinks to its original state.

[0069] It can be understood that the multiple connecting ribs 244 can be arranged at intervals in a direction parallel to the axis of the rotating shaft assembly 22. In other words, the multiple connecting ribs 244 can be arranged at intervals in the Y direction of the flexible screen 21. Of course, the multiple connecting ribs 244 can also be arranged at intervals in a direction perpendicular to the axis of the rotating shaft assembly 22. In other words, the multiple connecting ribs 244 can be arranged at intervals in the X direction of the flexible screen 21, and the present application does not limit this.

[0070] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0072] The display device and electronic device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display device, characterized in that: include: A flexible screen having a display surface; A hinge assembly is arranged on a side of the flexible screen away from the display surface, with a gap between the hinge assembly and the flexible screen, wherein the flexible screen can rotate around the hinge assembly as an axis to present a folded state or an unfolded state; and A protective sheet is arranged in the gap.

2. The display device according to claim 1, characterized in that The flexible screen includes a first part, a second part and a bending part, the bending part is connected between the first part and the second part, and the bending part can be deformed when the flexible screen rotates; there is the gap between the rotating shaft assembly and the bending part.

3. The display device according to claim 1, characterized in that The flexible screen includes a first section, a middle section, and a second section which are sequentially connected along a direction parallel to the axis, and the protective sheet is arranged on at least one of the first section and the second section.

4. The display device according to claim 3, characterized in that: The length of the protection sheet in the direction parallel to the axis is 15% to 20% of the length of the flexible screen in the direction parallel to the axis.

5. The display device according to any one of claims 1 to 4, characterized in that: The protective sheet is attached to the flexible screen; and / or the protective sheet is attached to the rotating shaft assembly.

6. The display device according to claim 2, characterized in that: The protective sheet is provided with a first mesh structure; and / or the bent portion is provided with a second mesh structure.

7. The display device according to claim 6, characterized in that: When the protection sheet is provided with the first mesh structure and the bent portion is provided with the second mesh structure, the first mesh structure and the second mesh structure have the same shape.

8. The display device according to claim 1, characterized in that: The protective sheet includes a first side portion, a second side portion and a plurality of connecting ribs, the first side portion and the second side portion are arranged at intervals, the plurality of connecting ribs are connected between the first side portion and the second side portion, and the plurality of connecting ribs are arranged at intervals.

9. A display device, characterized in that: include: A flexible screen having a display surface, wherein a side of the flexible screen facing away from the display surface is used to be connected to a rotating shaft assembly, and the flexible screen can rotate around the rotating shaft assembly to present a folded state or an unfolded state; and A protective sheet is attached to the flexible screen. When the rotating shaft assembly is connected to the flexible screen, there is a gap between the flexible screen and the rotating shaft assembly, and the protective sheet is located in the gap.

10. An electronic device, characterized in that: It comprises a shell and a display device, wherein the display device is assembled on the shell, and the display device is the display device according to any one of claims 1 to 9.

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