CN113140156A

CN113140156A - Electronic device

Info

Publication number: CN113140156A
Application number: CN202010191182.0A
Authority: CN
Inventors: 陈博
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-01-20
Filing date: 2020-03-18
Publication date: 2021-07-20
Also published as: CN212061687U

Abstract

The application discloses an electronic device. The electronic equipment comprises a flexible display screen, a shell assembly and a glue line assembly fixed between the flexible display screen and the shell assembly. The glue layer assembly comprises a strong glue layer and a weak glue layer, and the rigidity of the strong glue layer is greater than that of the weak glue layer. Through setting up the position of arranging of strong glue film and weak glue film for the water droplet form can be bent into to the portion of bending of flexible display screen, and flexible display screen is folding and the in-process that expandes along with electronic equipment, and the risk that takes place the rete separation or the problem of coming unstuck is less, and flexible display screen's reliability preferred is favorable to prolonging electronic equipment's life, improves user's use and experiences.

Description

Electronic device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an electronic device.

Background

In recent years, flexible display screens are widely used in various foldable electronic devices due to their characteristics of being light, thin, and not fragile. When the foldable electronic equipment is unfolded, the flexible display screen is unfolded and has a larger display area, and the large-screen viewing experience of a user can be met; when folding electronic equipment was folded, flexible display screen was folding, and electronic equipment overall dimension is less, easily accomodates and carries. However, in the process of repeatedly folding and unfolding the flexible display screen along with the electronic device, the problem of film separation or degumming easily occurs, and the reliability is poor.

Disclosure of Invention

The application provides an electronic device, and the flexible display screen of the electronic device is good in reliability.

The application provides an electronic equipment, electronic equipment is including the first casing, pivot subassembly and the second casing that connect gradually. The pivot subassembly includes pivot main part, first backup pad and second backup pad. The two ends of the rotating shaft main body are fixedly connected with the first shell and the second shell respectively, the rotating shaft main body can deform so that the first shell and the second shell can be unfolded or folded relatively, and the first supporting plate and the second supporting plate are movably connected with the rotating shaft main body and are spaced from each other.

The electronic equipment further comprises a flexible display screen, two strong adhesive layers and two weak adhesive layers. The flexible display screen comprises a first non-bending part, a first bending part, a second bending part, a third bending part and a second non-bending part which are sequentially arranged. The bending part of the flexible display screen comprises a first bending part, a second bending part and a third bending part. The two weak glue layers are respectively bonded between the first non-bending part and the first shell and between the second non-bending part and the second shell, and the two strong glue layers are respectively bonded between the first bending part and the first supporting plate and between the third bending part and the second supporting plate.

When the first shell and the second shell are relatively folded to a closed state, the second supporting plate and the first supporting plate are far away from each other in the direction close to the middle of the rotating shaft main body, so that the first bending portion, the second bending portion and the third bending portion are bent into a water drop shape together, and the rigidity of the strong glue layer is greater than that of the weak glue layer.

In this application, electronic equipment passes through first backup pad, second backup pad and two strong glue layers, make the portion of bending of flexible display screen can bend into the water droplet form when first casing and second casing are folding relatively to the closure state, thereby dispersed the stress that the portion of bending of flexible display screen received, make flexible display screen stress state at the in-process of bending comparatively even, so flexible display screen is along with the in-process that electronic equipment folds and expandes, the risk that takes place the rete separation or the problem of coming unstuck is less, the reliability of flexible display screen has been improved, be favorable to prolonging electronic equipment's life, user experience is improved.

In addition, because the portion of bending of flexible display screen is the water droplet form, consequently the first non-portion of bending and the second non-portion of bending of flexible display screen can be close to each other, distance between the two is less, both can be roughly parallel, when making electronic equipment be in the closure state, the gap between two parts structure of folding each other is less, thereby realize the design of folding back appearance seamless (or little gap), make electronic equipment's whole size less, it accomodates and carries to change, and the outward appearance is experienced better.

In addition, in the process that the first shell and the second shell are relatively folded and the flexible display screen is driven to be folded, the bent flexible display screen generates dislocation movement relative to the shell component due to stress generated by deformation of the bent flexible display screen. The flexible display screen can move relative to the housing assembly in a direction close to the outer ends of the first housing and the second housing away from the rotating shaft assembly, or in a direction close to the middle of the rotating shaft main body. At the moment, because the first bending part is bonded with the first supporting plate through the strong adhesive layer, the third bending part is bonded with the second supporting plate through the strong adhesive layer, the first non-bending part is bonded with the first shell through the weak adhesive layer, the second non-bending part is bonded with the second shell through the weak adhesive layer, the rigidity of the strong adhesive layer is greater than that of the weak adhesive layer, therefore, the flexible display screen has smaller dislocation relative to the first supporting plate and the second supporting plate, and has larger dislocation relative to the first shell and the second shell. Therefore, the length change of the bending part of the flexible display screen in the unfolding and folding processes is small, the risk of arching, layering or degumming of the bending part of the flexible display screen due to incomplete restoration in the unfolding process of the electronic equipment can be reduced, and the reliability of the flexible display screen is improved; meanwhile, the stress at the joint of the first bending part and the first non-bending part of the flexible display screen can be smoothly released through the dislocation between the first non-bending part and the first shell, and the stress at the joint of the third bending part and the second non-bending part can be smoothly released through the dislocation between the second non-bending part and the second shell, so that the joint of the bending part and the non-bending part of the flexible display screen can be reduced in the process of unfolding the electronic equipment, and the risks of arching, layering or degumming can be caused due to the incomplete restoration, so that the reliability of the flexible display screen is improved, and the reliability of the flexible display screen is better.

In a possible implementation mode, the second bending portion of the flexible display screen is connected with the end portion of the first bending portion to form a first arc section, the second bending portion is connected with the end portion of the third bending portion to form a second arc section, and the middle portion of the second bending portion forms a third arc section. The first arc section, the third arc section and the second arc section are in smooth transition.

In one possible implementation, the strong adhesive layer and the weak adhesive layer are arranged at intervals. That is, the weak glue layer that bonds the first casing and the strong glue layer that bonds the first backup pad separate the setting, and the weak glue layer that bonds the second casing and the strong glue layer that bonds the second backup pad separate the setting. When the first shell and the second shell are folded relatively to a closed state, the distance between the two weak glue layers is smaller than the distance between the two strong glue layers.

In this implementation, the first portion of bending of flexible display screen can form the fourth circular arc section in the position department of being close to first non-portion of bending, do not have the adhesive relation between fourth circular arc section and the strong glue layer, the third portion of bending can form the fifth circular arc section in the position department of being close to second non-portion of bending, the adhesive relation between fifth circular arc section and the strong glue layer, thereby make the water droplet shape transition that the portion of bending formed more gentle, be favorable to improving the reliability of flexible display screen.

In addition, because the portion of bending of flexible display screen is bent into the water droplet form, the portion of bending includes the centre of a circle at the inboard first circular arc section of flexible display screen, the second circular arc section, the third circular arc section, still include fourth circular arc section and the fifth circular arc section of the centre of a circle in the display screen outside, and the water droplet shape makes the radius of fourth circular arc section and fifth circular arc section great, thereby can bend the bending radius difference between an inside layer structure and an outside layer structure, be favorable to reducing the required dislocation distance that realizes of flexible display screen, make flexible display screen change and bend, the reliability is higher.

In a possible implementation mode, the flexible display screen comprises a supporting piece and a display panel which are arranged in a stacked mode, the supporting piece is used for bonding a strong glue layer and a weak glue layer, the supporting piece comprises a first metal plate piece, a second metal plate piece and a third metal plate piece which are arranged in sequence, the first metal plate piece is located at a first non-bending portion, the second metal plate piece is located at a first bending portion, a second bending portion and a third bending portion, the third metal plate piece is located at a second non-bending portion, and the second metal plate piece can be bent.

In this implementation, the support member is a continuous metal plate member, so that the support can be provided for the display panel, and the structural strength of the flexible display screen is high. The second metal plate can be bent, so that the flexible display screen can be smoothly bent.

In addition, can take place the dislocation between support piece and the display panel to reduce the dislocation demand between the display panel inner layer structure, make display panel change and bend, the reliability is higher, and flexible display screen's reliability is better.

In one possible implementation, the thickness of the second metal plate is smaller than the thickness of the first metal plate and smaller than the thickness of the third metal plate. At this moment, the structural strength of the second metal plate is reduced, so that the bending difficulty is reduced, the flexible display screen is easy to bend, and the user experience is improved.

In a possible implementation, the second sheet metal part is provided with one or more hollowed-out holes. At this moment, the structural strength of the second metal plate is reduced, so that the bending difficulty is reduced, the flexible display screen is easy to bend, and the user experience is improved.

In a possible implementation manner, the flexible display screen further includes a fixing adhesive layer adhered between the display panel and the supporting member. The fixing adhesive layer is partially filled in the one or more hollow holes of the second metal plate, so that the part of the flexible display panel, which is located at the bending part, has better flatness.

In one possible implementation, the modulus of the strong glue layer is greater than the modulus of the weak glue layer. In this implementation, the strong glue layer adopts the material with the larger modulus, and the weak glue layer adopts the material with the smaller modulus, so that the rigidity of the strong glue layer is larger than that of the weak glue layer, and the bonding requirement between the flexible display screen and the shell assembly is met.

In one possible implementation manner, the base material of the strong adhesive layer is a double-sided adhesive material or a hot melt adhesive material of polyethylene terephthalate.

In one possible implementation manner, the weak adhesive layer is made of a double-faced adhesive material or a silica gel material with a base material of foam.

In one possible implementation, the weak adhesive layer is made of a double-sided adhesive material without a base material and with a relatively low modulus.

In a possible implementation manner, the weak adhesive layer is made of acrylic adhesive material or rubber adhesive material with a lower modulus.

In one possible implementation, the bead bond layer is a continuous strip. At the moment, the area of the strong adhesive layer is larger, so that the realization of larger rigidity is facilitated, and the bonding requirement is met.

In one possible implementation, the weak adhesive layer includes one or more hollow-out regions to form a patterned structure. At the moment, the rigidity of the weak glue layer is lower so as to be smaller than that of the strong glue layer, and the bonding requirement is met.

In one possible implementation, the weak adhesive layer is a frame-shaped structure. The weak glue layer comprises a hollow area positioned in the middle. The shape of the frame shape of the weak adhesive layer is changed along with the shapes of the first non-bending part and the second non-bending part of the flexible display screen.

In one possible implementation, the weak adhesive layer is of a grid structure. The weak glue layer comprises a plurality of hollow areas which are arranged at intervals. Wherein, a plurality of fretwork areas are the array and arrange. The plurality of hollow-out areas can also be arranged in other arrangement rules or randomly. The shape of the hollow-out area can be a rectangle, and can also be a circle, an ellipse, a triangle, a diamond or other regular or irregular figures.

In one possible implementation, the weak adhesive layer includes a plurality of long adhesive strips spaced apart from each other. A hollow area is formed between two adjacent long adhesive tapes. The long side of the long adhesive tape can be a straight line or a wavy line.

In one possible implementation, the weak adhesive layer includes a plurality of adhesive blocks spaced apart from each other. A hollow area is formed between two adjacent rubber blocks. In this implementation, the number of the hollow areas of the weak glue layer is one, and the hollow areas are roughly in a grid shape and separate all the glue blocks.

The shape of the rubber block can be rectangular, or can be circular, oval, triangular, rhombic or other regular or irregular figures. Wherein, a plurality of gluey pieces can be arranged in array, perhaps, a plurality of gluey pieces also can have other laws of arranging or arrange at random.

In one possible implementation, the weak adhesive layer includes a plurality of first adhesive blocks and a plurality of second adhesive blocks, the area of the second adhesive blocks is different from the area of the first adhesive blocks, and all the first adhesive blocks and the second adhesive blocks are distributed at intervals. A hollow area is formed between two adjacent rubber blocks. In this implementation, the number of the hollow areas of the weak glue layer is one, and the hollow areas are roughly in a grid shape and separate all the glue blocks.

The first rubber block and the second rubber block can be in structures with the same shape and different sizes, and can also be in structures with different shapes. The first rubber block and the second rubber block can be rectangular, or can be circular, oval, triangular, rhombic or other regular or irregular figures.

In one possible implementation, the weak adhesive layer is of a continuous and full-face structure, and the shape of the weak adhesive layer changes with the shapes of the supporting surface of the first shell and the supporting surface of the second shell. In this case, the weak adhesive layer may be made of a material having a smaller modulus so that the stiffness thereof is smaller than that of the strong adhesive layer.

In one possible implementation, the modulus of the strong adhesive layer is equal to the modulus of the weak adhesive layer, and the arrangement area of the strong adhesive layer is larger than that of the weak adhesive layer. At this time, the rigidity of the strong adhesive layer is greater than that of the weak adhesive layer. The weak glue layer can be provided with a hollow area with a larger area so as to enable the area of the hollow area to be smaller than that of the strong glue layer.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device in an open state according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the electronic device shown in FIG. 1 in a closed state;

FIG. 3 is a partially exploded view I of the electronic device of FIG. 1;

FIG. 4 is a partially exploded view of the electronic device of FIG. 1;

FIG. 5 is a schematic view of a portion of the electronic device shown in FIG. 2 taken along line A-A;

FIG. 6 is a schematic diagram of the internal structure of the flexible display of the electronic device shown in FIG. 5;

FIG. 7 is a schematic view of another internal structure of the flexible display shown in FIG. 6 in another use state;

FIG. 8 is a structure of the layer of weakness of FIG. 3 in other embodiments;

FIG. 9 is a structure of the layer of weakness of FIG. 3 in still other embodiments;

FIG. 10 is a structure of the layer of weakness of FIG. 3 in still other embodiments;

FIG. 11 is a structure of the layer of weakness of FIG. 3 in still other embodiments;

FIG. 12 is a structure of the layer of weakness of FIG. 3 in still other embodiments;

figure 13 is a structure of the layer of weakness of figure 3 in still other embodiments.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

The embodiment of the application provides a foldable electronic device. The electronic equipment comprises a flexible display screen, a shell assembly and a glue line assembly fixed between the flexible display screen and the shell assembly. The glue film subassembly includes strong glue film and weak glue film, and the rigidity of strong glue film is greater than the rigidity of weak glue film, through setting up the position of arranging of strong glue film and weak glue film for flexible display screen is folding and the in-process that expandes along with electronic equipment, and the risk that takes place the rete separation or the problem of coming unstuck is less, and flexible display screen's reliability preferred is favorable to prolonging electronic equipment's life, improves user's use and experiences.

Referring to fig. 1 and fig. 2 together, fig. 1 is a schematic structural diagram of an electronic device 100 provided in an embodiment of the present application in an open state; fig. 2 is a schematic structural diagram of the electronic device 100 shown in fig. 1 in a closed state.

The electronic device 100 is a foldable electronic product. The electronic device 100 may be a mobile phone, a tablet computer, a vehicle-mounted device, a wearable device, and the like. The electronic device 100 of the embodiment shown in fig. 1 is illustrated as a mobile phone. For convenience of description, as shown in fig. 1, the width direction of the electronic apparatus 100 is defined as an X axis, the length direction of the electronic apparatus 100 is defined as a Y axis, the thickness direction of the electronic apparatus 100 is defined as a Z axis, and the width direction X of the electronic apparatus 100, the length direction Y of the electronic apparatus 100, and the thickness direction Z of the electronic apparatus 100 are perpendicular to each other.

The electronic device 100 includes a flexible display screen 1 and a housing assembly 2, the flexible display screen 1 being fixed to the housing assembly 2.

The flexible display screen 1 is used for displaying images. As an example, the flexible display panel 1 may be an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini-organic light-emitting diode (mini-OLED) display panel, a micro-organic light-emitting diode (micro-OLED) display panel, a quantum dot light-emitting diode (QLED) display panel.

The housing assembly 2 includes a first housing 21, a rotary shaft assembly 22, and a second housing 23 connected in sequence. The rotating shaft assembly 22 can be deformed to make the first shell 21 and the second shell 23 relatively unfolded or relatively folded. As shown in fig. 1, the first casing 21 and the second casing 23 can be relatively unfolded to be fully opened, so that the electronic device 100 is in an opened state. Illustratively, the first housing 21 and the second housing 23 may be substantially 180 ° (with some tolerance, e.g., 165 °, 177 °, or 185 °, also permitted) when both are fully open. As shown in fig. 2, the first casing 21 and the second casing 23 can be folded relatively to be closed, so that the electronic device 100 is in a closed state. Illustratively, the first housing 21 and the second housing 23 are parallel (allowing for some misalignment) when the two are closed. In other words, the electronic apparatus 100 can be switched between the open state and the closed state by the deformation of the hinge assembly 22. In some embodiments, the electronic device 100 may further expand/fold the first casing 21 and the second casing 23 relative to each other through deformation of the rotating shaft assembly 22 to a state that the electronic device 100 is partially opened, that is, an intermediate state between the fully opened state and the closed state of the first casing 21 and the second casing 23. In other embodiments, when the first casing 21 and the second casing 23 are completely opened, they may also form obtuse angles such as 120 °, 135 °, 150 °, and the like, which is not strictly limited in this embodiment of the present application.

Illustratively, as shown in fig. 1, the electronic device 100 is bent around the rotation axis 20, that is, the first housing 21 and the second housing 23 are relatively unfolded or folded around the rotation axis 20, and the rotation axis 20 is parallel to the width direction X of the electronic device 100. In other embodiments, the rotation axis 20 may also be parallel to the length direction Y of the electronic apparatus 100, which is not strictly limited in this embodiment.

In this embodiment, the flexible display screen 1 can be bent along with the housing component 2, and when the electronic device 100 is in an open state, the flexible display screen 1 is flattened and can display in a full screen manner, so that the electronic device 100 has a large display area to improve the viewing experience of a user; when the electronic device 100 is in the closed state, the flexible display screen 1 is folded inside the housing assembly 2, and the electronic device 100 has a small planar size and is convenient for a user to carry and store.

As shown in fig. 2, when the electronic device 100 is in the closed state, the rotating shaft assembly 22 of the electronic device 100 is exposed and has a complete appearance without any obvious broken hole or protruding structure, which not only can improve the integrity of the appearance of the electronic device 100, but also is beneficial to improving the hand feeling of holding of a user.

In some embodiments, the electronic device 100 further comprises a processor (not shown) mounted in the housing assembly 2, the flexible display screen 1 being coupled to the processor, and the processor being configured to control the display action of the flexible display screen 1. The electronic device 100 further comprises one or more functional modules mounted within the housing assembly 2 and coupled to the processor, which is also used to control the actions of the one or more functional modules. The functional modules may include, but are not limited to, a camera module, a speaker module, a microphone module, a sensor module, a wireless communication module, and the like. The functions of the processor of the electronic device 100, the number of functional modules, the types of functional modules, and the like are not strictly limited in this application.

Referring to fig. 3 and 4 together, fig. 3 is a first partially exploded schematic view of the electronic device 100 shown in fig. 1, and fig. 4 is a second partially exploded schematic view of the electronic device 100 shown in fig. 1. The glue line assembly is filled in fig. 3 and 4 to show the structure more prominently.

The spindle assembly 22 includes a spindle body 221, a first support plate 222, and a second support plate 223. The two ends of the main body 221 are fixedly connected to the first casing 21 and the second casing 23 respectively to connect the first casing 21 and the second casing 23. The main body 221 can be deformed to expand or fold the first casing 21 and the second casing 23, and the first support plate 222 and the second support plate 223 are movably connected to the main body 221 and spaced apart from each other. The first support plate 222 and the second support plate 223 move with the rotation shaft body 221. In some embodiments, the rotating shaft assembly 22 may further include a third supporting plate 224, the third supporting plate 224 is fixedly or movably connected to the rotating shaft main body 221, and the third supporting plate 224 is located between the first supporting plate 222 and the second supporting plate 223.

Wherein, the connection relationship between the first support plate 222 and the main body 221 of the rotation shaft may include a rotational connection and/or a sliding connection, and the connection relationship between the second support plate 223 and the main body 221 of the rotation shaft may include a rotational connection and/or a sliding connection. In the embodiment of the present application, the rotating shaft main body 221, the first support plate 222, and the second support plate 223 may have various implementations. For example, the pivot assembly 22 may include, but is not limited to, one or more of a hinge, a slider, a slide, a pin, a link, and a swing link. Alternatively, the rotating shaft assembly 22 may be made of an elastic material, a memory alloy material, or the like. The specific implementation of the spindle assembly 22 is not strictly limited in this application. In the embodiment of the application, "a and/or B" includes "a", "B", and "a and B".

The flexible display screen 1 includes a first non-bending portion 11, a first bending portion 12, a second bending portion 13, a third bending portion 14, and a second non-bending portion 15, which are sequentially arranged. The first non-bending portion 11 can be correspondingly installed on the first housing 21, the second non-bending portion 15 can be correspondingly installed on the second housing 23, the first bending portion 12, the second bending portion 13 and the third bending portion 14 together form the bending portion 10 of the flexible display screen 1, and the bending portion 10 can be correspondingly installed on the rotating shaft assembly 22. The flexible display screen 1 may be a continuous and integrated display screen structure, and the first non-bending portion 11, the first bending portion 12, the second bending portion 13, the third bending portion 14, and the second non-bending portion 15 are all part of the flexible display screen 1.

The electronic device 100 further comprises a glue layer assembly 3, and the glue layer assembly 3 is used for adhering and fixing the flexible display screen 1 to the housing assembly 2. For example, the adhesive layer of the adhesive layer assembly 3 may adopt one or more of a double-sided adhesive, an acrylic adhesive, a rubber adhesive, and a silicone adhesive. The fixing process of the glue layer assembly 3 may be an Ultraviolet (UV) curing process, a moisture curing process, a thermal curing process, an infrared curing process, or the like. The application does not strictly limit the specific material and the specific forming process of the adhesive layer in the adhesive layer assembly 3.

The glue line assembly 3 comprises two layers of glue 31 and two layers of glue 32. The stiffness of the reinforcement layers 31 is greater than the stiffness of the reinforcement layers 32. In the present embodiment, "stiffness" is used to mean the ability of the glue layer to resist elastic deformation when subjected to a force. In other words, the strong adhesive layer 31 is less likely to deform than the weak adhesive layer 32 when subjected to an external force. It should be understood that in the embodiment of the present application, the weak adhesive layer 32 is relatively weak to the strong adhesive layer 31, and is not limited to the weak adhesive layer 32 itself. Similarly, the layer of strong adhesive 31 is relatively rigid with respect to the layer of weak adhesive 32, and is not limited to the layer of strong adhesive 31 itself being very rigid.

One of the two weak adhesive layers 32 is fixed to the first housing 21 and used for adhering the first non-bent portion 11, and the other weak adhesive layer 32 is fixed to the second housing 23 and used for adhering the second non-bent portion 15. One of the two layers of glue 31 is fixed to the first support plate 222 for adhering the first bent portion 12, and the other layer of glue 31 is fixed to the second support plate 223 for adhering the second bent portion 13. In other words, the two weak adhesive layers 32 are respectively bonded between the first non-bent portion 11 and the first case 21 and between the second non-bent portion 15 and the second case 23, and the two strong adhesive layers 31 are respectively bonded between the first bent portion 12 and the first support plate 222 and between the third bent portion 14 and the second support plate 223.

In some embodiments, when the electronic device 100 is in the open state, the rotating shaft main body 221 is substantially flattened, and the supporting surfaces of the first supporting plate 222, the second supporting plate 223, the third supporting plate 224, the first housing 21, and the second housing 23 for fixing the flexible display screen 1 are substantially flush, so as to better support the flexible display screen 1, so that the flexible display screen 1 has flat display and touch planes, which is beneficial to improving the viewing experience and the touch operation experience of a user. In some other embodiments, the hinge assembly 22 may not be provided with the third support plate 224, and when the electronic device 100 is in the open state, the second bending portion 13 of the flexible display screen 1 is supported by a partial structure of the hinge main body 221, so that the hinge assembly 22 sufficiently supports the bending portion 10 of the flexible display screen 1.

Referring to fig. 5, fig. 5 is a partial schematic structural diagram of the electronic device 100 shown in fig. 2 taken along a-a.

When the first casing 21 and the second casing 23 are folded relatively to a closed state, the second support plate 223 and the first support plate 222 are away from each other in a direction close to the middle of the rotating shaft main body 221 (i.e., in a direction close to the third support plate 224), so that the first bent portion 12, the second bent portion 13, and the third bent portion 14 are bent together into a droplet shape. That is, when the electronic device 100 is in the closed state, the bending portion 10 of the flexible display screen 1 is in a droplet shape.

In this embodiment, electronic device 100 is through first backup pad 222, second backup pad 223 and two hose 31, make the portion 10 of bending of flexible display screen 1 can bend into the water droplet form when first casing 21 and second casing 23 are relatively folded to the closure state, thereby dispersed the stress that the portion 10 of bending of flexible display screen 1 received, make flexible display screen 1 stress state at the in-process of bending comparatively even, so flexible display screen 1 is folding along with electronic device 100 and the in-process that expandes, the risk of taking place the rete separation or the problem of coming unstuck is less, the reliability of flexible display screen 1 has been improved, be favorable to prolonging electronic device 100's life, user's use experience is improved.

In addition, because the portion 10 of bending of flexible display screen 1 is the water droplet form, consequently flexible display screen 1's first non-portion 11 and the non-portion 15 of bending of second can be close to each other, distance between the two is less, both can be roughly parallel, when making electronic equipment 100 be in the closure state, the gap between the two parts structure of folding each other is less, thereby realize the design of folding back appearance seamless (or little gap), make electronic equipment 100's whole size less, it accomodates and carries more easily, and the outward appearance experience is better.

In addition, in the process that the first shell 21 and the second shell 23 are folded relatively and the flexible display screen 1 is driven to be folded, the bent flexible display screen 1 generates dislocation movement relative to the shell assembly 2 due to stress generated by deformation of the bent flexible display screen 1. For example, the flexible display screen 1 may move toward the housing assembly 2 in a direction toward the outer ends of the first and

second housings

21 and 23 away from the hinge assembly 22, or in a direction toward the middle of the hinge main body 221. At this time, the first bending portion 12 is bonded to the first support plate 222 through the sealant layer 31, the third bending portion 14 is bonded to the second support plate 223 through the sealant layer 31, the first non-bending portion 11 is bonded to the first case 21 through the sealant layer 32, the second non-bending portion 15 is bonded to the second case 23 through the sealant layer 32, and the sealant layer 31 has a rigidity higher than that of the sealant layer 32, so that the flexible display panel 1 has a smaller misalignment relative to the first support plate 222 and the second support plate 223 and a larger misalignment relative to the first case 21 and the second case 23. Therefore, the length change of the bending part 10 of the flexible display screen 1 in the unfolding and folding processes is small, and the risk of arching, layering or degumming of the bending part 10 of the flexible display screen 1 due to incomplete restoration in the unfolding process of the electronic device 100 can be reduced, so that the reliability of the flexible display screen 1 is improved; meanwhile, the stress at the joint of the first bending part 12 and the first non-bending part 11 of the flexible display screen 1 can be smoothly released through the dislocation between the first non-bending part 11 and the first housing 21, and the stress at the joint of the third bending part 14 and the second non-bending part 15 can be smoothly released through the dislocation between the second non-bending part 15 and the second housing 23, so that the risk of arching, layering or degumming caused by incomplete restoration in the process that the joint of the bending part 10 and the non-bending parts (11, 15) of the flexible display screen 1 is unfolded in the electronic device 100 can be reduced, and the reliability of the flexible display screen 1 is improved.

It will be appreciated that when the flexible display screen 1 is folded or unfolded with the housing assembly 2, the displacement of the flexible display screen 1 relative to the housing assembly 2 is slight, and the displacement direction is related to the specific design (e.g. structure, size, position, etc.) of the flexible display screen 1, the glue line assembly 3 and the housing assembly 2. Illustratively, the first bending portion 12 of the flexible display 1 moves toward the outer end of the first housing 21 relative to the first support plate 222, the third bending portion 14 moves toward the outer end of the second housing 23 relative to the second support plate 223, the first non-bending portion 11 moves toward the outer end of the first housing 21 relative to the first housing 21, and the second non-bending portion 15 moves toward the outer end of the second housing 23 relative to the second housing 23.

Illustratively, the end of the second bending portion 13 of the flexible display screen 1 connected to the first bending portion 12 forms a first arc segment R1, the end of the second bending portion 13 connected to the third bending portion 14 forms a second arc segment R2, and the middle of the second bending portion 13 forms a third arc segment R3. The first circular arc section R1, the third circular arc section R3 and the second circular arc section R2 are in smooth transition. Illustratively, the support surface of the first support plate 222 is planar and the support surface of the second support plate 223 is planar.

In some embodiments, the layer of strong glue 31 is spaced apart from the layer of weak glue 32. That is, the weak adhesive layer 32 adhered to the first case 21 is spaced apart from the strong adhesive layer 31 adhered to the first support plate 222, and the weak adhesive layer 32 adhered to the second case 23 is spaced apart from the strong adhesive layer 31 adhered to the second support plate 223. When the first casing 21 and the second casing 23 are folded relatively to each other to the closed state, the distance between the two weak adhesive layers 32 is smaller than the distance between the two strong adhesive layers 31. At this moment, first bending portion 12 of flexible display screen 1 can form fourth circular arc section R4 in the position department that is close to first non-bending portion 11, fourth circular arc section R4 and the strong adhesive layer 31 between no adhesive relation, third bending portion 14 can form fifth circular arc section R5 in the position department that is close to second non-bending portion 15, no adhesive relation between fifth circular arc section R5 and the strong adhesive layer 31, thereby make the water droplet shape transition that bending portion 10 formed more gentle, be favorable to improving flexible display screen 1's reliability.

Referring to fig. 6, fig. 6 is a schematic view of an internal structure of the flexible display screen 1 of the electronic device 100 shown in fig. 5.

When the electronic device 100 is in the closed state, the bent flexible display screen 1 may be slightly misaligned with respect to the housing assembly 2, and a plurality of layer structures of the flexible display screen 1 may also be slightly misaligned with each other.

In some embodiments, the flexible display screen 1 comprises a support 16 and a display panel 17 arranged in a stack. The support member 16 is located on the non-display side of the display panel 17, and when the flexible display panel 1 is turned, the support member 16 is located on the outer side of the display panel 17. The support member 16 serves to bond the strong adhesive layer 31 and the weak adhesive layer 32. The support member 16 and the display panel 17 are fixed by adhesive layer 18.

The display panel 17 includes a plurality of stacked film layers, and a glue layer located between any adjacent two side film layers for realizing bonding fixation. For example, the embodiment of fig. 6 simplifies the multiple film layers and the multiple adhesive layers into a first film layer 171, a first adhesive layer 172, a second film layer 173, a second adhesive layer 174, and a third film layer 175, which are sequentially stacked. The third film layer 175 is bonded to the support member 16.

When the flexible display screen 1 is bent, due to different bending radii, relative dislocation occurs between the structures of the flexible display screen 1 to maintain the length of the structures constant, and dislocation deformation between the materials is mainly absorbed by the material (such as an adhesive layer) with a lower modulus, so that separation or degumming failure between the film layers due to the fact that the flexible display screen 1 cannot meet the requirement of corresponding dislocation movement or stress strain is reduced.

In the embodiment of fig. 6, for example, at the end of the flexible display screen 1, the first film 171 protrudes relative to the second film 172, the second film 172 protrudes relative to the third film 173, the third film 173 protrudes relative to the support 16, and the first adhesive layer 172, the second adhesive layer 174, and the fixing adhesive layer 18 are deformed. That is, the layer structure of the flexible display panel 1 located on the inner side is displaced from the layer structure located on the outer side in the direction toward the end of the flexible display panel 1. The modulus of the first adhesive layer 172, the second adhesive layer 174 and the fixing adhesive layer 18 is smaller than the modulus of the first film layer 171, the second film layer 173, the third film layer 175 and the supporting member 16, that is, the rigidity of the adhesive layers is smaller than the rigidity of the film layers and the rigidity of the supporting member 16, and through the deformation of the adhesive layers, the misalignment between the film layers and the supporting member 16 is successfully realized, so that the risk of film layer separation or degumming of the flexible display screen 1 is reduced, and the reliability of the flexible display screen 1 is improved. In addition, because the support 16 and the display panel 17 can be dislocated, the requirement for dislocation between the inner layer structures of the display panel 17 can be reduced, so that the display panel 17 is easier to bend, and the reliability is higher.

Furthermore, in this application embodiment, because the portion 10 of bending of flexible display screen 1 bends into the water droplet form, the portion 10 of bending includes the centre of a circle at the inboard first circular arc section R1 of flexible display screen 1, second circular arc section R2, third circular arc section R3, still include fourth circular arc section R4 and fifth circular arc section R5 of the centre of a circle in the display screen outside, and the water droplet form makes fourth circular arc section R4 and fifth circular arc section R5's radius great, thereby can bend the bending radius difference between 10 medial layer structure and the outside layer structure, be favorable to reducing the dislocation distance that flexible display screen 1 needs to realize, make flexible display screen 1 change and bend, the reliability is higher.

It is understood that, in some other embodiments, the bending portion 10 of the flexible display screen 1 may be bent into other irregular shapes when the electronic device 100 is in the closed state by designing the positions and the shapes of the first support plate 222 and the second support plate 223, which is not limited in this embodiment.

Referring to fig. 7, fig. 7 is another schematic internal structure diagram of the flexible display screen 1 shown in fig. 6 in another use state.

In some embodiments, the supporting member 16 includes a first metal plate 161, a second metal plate 162 and a third metal plate 163 arranged in sequence, the first metal plate 161 is located at the first non-bending portion 11, the second metal plate 162 is located at the first bending portion 12, the second bending portion 13 and the third bending portion 14, the third metal plate 163 is located at the second non-bending portion 15, and the second metal plate 162 can be bent.

In this embodiment, the supporting member 16 is a continuous metal plate, and the first metal plate 161, the second metal plate 162 and the third metal plate 163 are all part of the supporting plate 16, so as to provide support for the display panel 17, and make the structural strength of the flexible display screen 1 higher. The second metal plate 162 can be bent, so that the flexible display screen 1 can be smoothly bent.

In some embodiments, the second metal plate 162 is provided with one or more holes 1621. At this moment, the structural strength of the second metal plate 162 is reduced, which is beneficial to reducing the bending difficulty, so that the flexible display screen 1 is easily bent, thereby improving the user experience.

For example, the fixing adhesive layer 18 adhered between the display panel 17 and the support 16 can be partially filled in the one or more hollow holes 1621 of the second metal plate 162, so that the portion of the flexible display panel 17 located at the bending portion 10 has a better flatness.

In other embodiments, the thickness of the second metal plate 162 is smaller than the thickness of the first metal plate 161 and smaller than the thickness of the third metal plate 163. At this moment, the structural strength of the second metal plate 162 is reduced, which is beneficial to reducing the bending difficulty, so that the flexible display screen 1 is easily bent, thereby improving the user experience.

It can be understood that, the structural strength of the portion of the supporting member 16 located at the bending portion 10 of the flexible display screen 1 is lower, the structural strength of the non-bending portion 10 located at the flexible display screen 1 is higher, and the supporting member 16 may have various design structures, which is not strictly limited in this application.

In other embodiments, the flexible display 1 may not be provided with the supporting member 16 and the adhesive layer 18, and the display panel 17 of the flexible display 1 is fixed to the adhesive layer assembly 3.

In some embodiments, the flexible display screen 1 may also integrate a touch function, and the flexible display screen 1 is capable of generating a touch signal according to a touch action of a user. Illustratively, a touch layer is integrated within the display panel 17 to integrate the display function and the touch function. Or, the flexible display screen 1 further includes a touch panel, the touch panel is stacked with the display panel 17, and the touch panel may be located on the light exit side of the display panel 17.

In the embodiment of the present application, the strong adhesive layer 31 and the weak adhesive layer 32 in the adhesive layer assembly 3 may have various embodiments, and the stiffness requirement may be realized through material design and/or shape design, etc. The following examples are given.

In some embodiments, the modulus of the strong glue layer 31 is greater than the modulus of the weak glue layer 32. In the present embodiment, "modulus" is used to indicate the ability of a material to resist elastic deformation when subjected to a force. In this embodiment, the strong adhesive layer 31 is made of a material with a larger modulus, and the weak adhesive layer 32 is made of a material with a smaller modulus, so that the rigidity of the strong adhesive layer 31 is greater than that of the weak adhesive layer 32, and the bonding requirement between the flexible display screen 1 and the housing assembly 2 is met.

For example, the strong adhesive layer 31 may be a double-sided adhesive material with a substrate with a larger modulus being polyethylene terephthalate; alternatively, the strong adhesive layer 31 may be made of a hot-melt adhesive material having a relatively high modulus. In other embodiments, other materials with higher modulus can be used for the strong adhesive layer 31.

For example, the weak adhesive layer 32 may be a double-sided adhesive material with a lower modulus substrate of foam; alternatively, the layer of weak glue 32 may be a silicone material. In other embodiments, a relatively low modulus, substrate-less two-sided adhesive material may be used for the light adhesive layer 32. In other embodiments, the light-weight adhesive layer 32 may be made of acrylic or rubber-based adhesive with a lower modulus. In other embodiments, other lower modulus materials may be used for the layer of light adhesive 32.

In some embodiments, as shown in fig. 3, the reinforcement adhesive layer 31 is in the shape of a continuous strip. At this time, the area of the strong adhesive layer 31 is large, which is beneficial to realizing large rigidity so as to meet the bonding requirement.

In some embodiments, as shown in fig. 3, the layer of weak adhesive 32 may also be a continuous, full-face structure, and the shape of the layer of weak adhesive 32 varies with the shape of the support surface of the first housing 21 and the support surface of the second housing 23. At this time, the weak adhesive layer 32 may be made of a material having a smaller modulus so that its rigidity is smaller than that of the strong adhesive layer 31.

In other embodiments, the layer of weak glue 32 includes one or more hollowed-out regions to form a patterned structure. At this time, the stiffness of the weak adhesive layer 32 is lower than that of the strong adhesive layer 31, so as to meet the bonding requirement.

For example, referring to fig. 8, fig. 8 illustrates the structure of the weak adhesive layer 32 shown in fig. 3 in other embodiments.

The layer of weak glue 32 comprises a plurality of long glue strips 322 spaced apart from each other. A hollow area 321 is formed between two adjacent long adhesive tapes 322. The plurality of long adhesive tapes 322 may be arranged along the width direction X of the electronic device 100, and each long adhesive tape 322 extends along the length direction Y of the electronic device 100. In other embodiments, the plurality of long adhesive tapes 322 may also be arranged in other directions (for example, the length direction Y of the electronic device 100), and each long adhesive tape 322 may also extend in other directions (for example, the width direction X of the electronic device 100), which is not limited in this application.

Wherein, the long side 3221 of the long adhesive tape 322 is a straight line to reduce the manufacturing difficulty and the manufacturing cost of the long adhesive tape 322.

For example, referring to fig. 9, fig. 9 illustrates the structure of the weak adhesive layer 32 shown in fig. 3 in further embodiments. The weak adhesive layer 32 of this embodiment includes most of the features of the weak adhesive layer 32 of the previous embodiment, and the differences between the two are mainly described below, and most of the same contents are not repeated.

The layer of weak adhesive 32 includes a plurality of elongated adhesive strips (323a/323b) spaced apart from one another. A hollow area 321 is formed between two adjacent long adhesive tapes (323a/323 b). The long sides 3231 of the two long adhesive tapes 323a in the middle are triangular wavy lines, and the long sides 3232 of the two long adhesive tapes 323b in the two sides are triangular wavy lines. In other embodiments, one or more of the four sides of the long strip of adhesive 323a/323b may be provided as a wavy line. The edges of some of the long strips (323a/323b) may be wavy lines, or the edges of all the long strips may be wavy lines. In other embodiments, the long side of the long adhesive tape strip (323a/323b) can also be in a circular arc wave shape, a rectangular wave shape, or the like.

For example, referring to fig. 10, fig. 10 illustrates the structure of the layer of weakness 32 of fig. 3 in still other embodiments. The weak adhesive layer 32 of this embodiment includes most of the features of the weak adhesive layer 32 of the previous embodiment, and the differences between the two are mainly described below, and most of the same contents are not repeated.

The layer of weak glue 32 includes a plurality of glue blocks 324 spaced apart from one another. A hollow area 321 is formed between two adjacent rubber blocks 324. In this embodiment, the number of the hollow areas 321 of the weak adhesive layer 32 is one, and the hollow areas 321 separate all the adhesive blocks 324.

The shape of the rubber block 324 may be a rectangle as shown in fig. 10, or may be a circle, an ellipse, a triangle, a diamond, or other regular or irregular figure, which is not strictly limited in this application.

The plurality of rubber blocks 324 may be arranged in an array. In other embodiments, the plurality of rubber blocks 324 may be arranged regularly or randomly.

For example, referring to fig. 11, fig. 11 illustrates the structure of the weak adhesive layer 32 shown in fig. 3 in still other embodiments. The weak adhesive layer 32 of this embodiment includes most of the features of the weak adhesive layer 32 of the previous embodiment, and the differences between the two are mainly described below, and most of the same contents are not repeated.

The weak adhesive layer 32 includes a plurality of first adhesive blocks 325 and a plurality of second adhesive blocks 326, the area of the second adhesive blocks 326 is different from the area of the first adhesive blocks 325, and all the first adhesive blocks 325 and the second adhesive blocks 326 are distributed at intervals. A hollow-out area 321 is formed between two adjacent rubber blocks (325, 326). In this embodiment, the number of the hollow areas 321 of the weak adhesive layer 32 is one, and the hollow areas 321 separate all the adhesive blocks (325, 326).

The first rubber block 325 and the second rubber block 326 may be structures with the same shape and different sizes, or structures with different shapes, which is not strictly limited in the embodiment of the present application. The first rubber block 325 and the second rubber block 326 may be rectangular as shown in fig. 11, or may be circular, oval, triangular, diamond, or other regular or irregular patterns, which is not limited in this embodiment of the present invention.

For example, referring to fig. 12, fig. 12 illustrates the structure of the weak adhesive layer 32 shown in fig. 3 in still other embodiments. The weak adhesive layer 32 of this embodiment includes most of the features of the weak adhesive layer 32 of the previous embodiment, and the differences between the two are mainly described below, and most of the same contents are not repeated.

The weak adhesive layer 32 has a lattice structure. The weak adhesive layer 32 includes a plurality of hollowed-out regions 321 disposed at intervals. The plurality of hollow areas 321 are arranged in an array. The shape of the hollow area 321 may be a rectangle as shown in fig. 12, or may also be a circle, an ellipse, a triangle, a diamond, or other regular or irregular figure, which is not strictly limited in this embodiment of the present application.

In other embodiments, the plurality of hollow areas 321 of the weak adhesive layer 32 may be arranged in other regular patterns or randomly.

For example, referring to fig. 13, fig. 13 illustrates the structure of the weak adhesive layer 32 shown in fig. 3 in further embodiments. The weak adhesive layer 32 of this embodiment includes most of the features of the weak adhesive layer 32 of the previous embodiment, and the differences between the two are mainly described below, and most of the same contents are not repeated.

The layer of weak glue 32 is a frame-shaped structure. The layer of weakness 32 includes a hollowed-out area 321 in the middle. The shape of the frame of the weak adhesive layer 32 is changed according to the shapes of the first non-bending portion 11 and the second non-bending portion 15 (see fig. 3) of the flexible display panel 1. Illustratively, the first non-bending portion 11 is rectangular, and the weak adhesive layer 32 is a rectangular frame.

In still other embodiments, the modulus of the strong glue layer 31 is equal to the modulus of the weak glue layer 32, and the arrangement area of the strong glue layer 31 is larger than that of the weak glue layer 32. At this time, the stiffness of the strong glue layer 31 is greater than that of the weak glue layer 32. The area of the hollow area 321 of the weak adhesive layer 32 may be larger than that of the strong adhesive layer 31.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and shall be covered by the scope of the present invention; the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An electronic device is characterized by comprising a first shell, a rotating shaft assembly and a second shell which are sequentially connected, wherein the rotating shaft assembly comprises a rotating shaft main body, a first supporting plate and a second supporting plate, two ends of the rotating shaft main body are fixedly connected with the first shell and the second shell respectively, the rotating shaft main body can deform so that the first shell and the second shell are unfolded or folded relatively, and the first supporting plate and the second supporting plate are movably connected with the rotating shaft main body and are spaced from each other;

the electronic equipment further comprises a flexible display screen, two strong adhesive layers and two weak adhesive layers;

the flexible display screen comprises a first non-bending part, a first bending part, a second bending part, a third bending part and a second non-bending part which are sequentially arranged, the two weak glue layers are respectively bonded between the first non-bending part and the first shell and between the second non-bending part and the second shell, and the two strong glue layers are respectively bonded between the first bending part and the first supporting plate and between the third bending part and the second supporting plate;

first casing with when the second casing is folding to the closure state relatively, the second backup pad with first backup pad is being close to keep away from each other in the direction at the middle part of pivot main part, so that first portion of bending, the second portion of bending reach the third portion of bending is bent into the drop form jointly, the rigidity of strong glue layer is greater than the rigidity of weak glue layer.

2. The electronic device of claim 1, wherein the layer of strong glue is spaced apart from the layer of weak glue;

when the first shell and the second shell are folded relatively to a closed state, the distance between the two weak glue layers is smaller than the distance between the two strong glue layers.

3. The electronic device of claim 1, wherein the flexible display screen comprises a support member and a display panel, the support member is stacked and bonds the strong adhesive layer and the weak adhesive layer, the support member comprises a first metal plate, a second metal plate and a third metal plate, the first metal plate is located at the first non-bending portion, the second metal plate is located at the first bending portion, the second bending portion and the third bending portion, the third metal plate is located at the second non-bending portion, and the second metal plate can be bent;

the thickness of the second metal plate is smaller than that of the first metal plate and smaller than that of the third metal plate; or one or more hollow holes are formed in the second metal plate.

4. The electronic device of any of claims 1-3, wherein a modulus of the strong glue layer is greater than a modulus of the weak glue layer.

5. The electronic device of claim 4, wherein the super glue layer is made of a double-sided adhesive material with a polyethylene terephthalate substrate or a hot melt adhesive material.

6. The electronic device of claim 4, wherein the light-weight adhesive layer is made of a double-sided adhesive material with a foam base material or a silica gel material.

7. The electronic device of any one of claims 1-3, wherein the layer of gelatin is in the shape of a continuous strip.

8. The electronic device of any one of claims 1-3, wherein the layer of weakness includes one or more hollowed-out regions to form a patterned structure.

9. The electronic device of claim 8, wherein the layer of weak glue is a frame-shaped structure; alternatively, the first and second electrodes may be,

the weak adhesive layer is of a grid structure; alternatively, the first and second electrodes may be,

the weak glue layer comprises a plurality of long glue strips which are distributed at intervals; alternatively, the first and second electrodes may be,

the weak glue layer comprises a plurality of glue blocks which are distributed at intervals; alternatively, the first and second electrodes may be,

the weak glue layer comprises a plurality of first glue blocks and a plurality of second glue blocks, the area of the second glue blocks is different from that of the first glue blocks, and all the first glue blocks and the second glue blocks are distributed at intervals.

10. The electronic device according to any one of claims 1 to 3, wherein a modulus of the strong adhesive layer is equal to a modulus of the weak adhesive layer, and an arrangement area of the strong adhesive layer is larger than an arrangement area of the weak adhesive layer.