electronic devices

Abstract

The present application discloses an electronic device, comprising: a frame assembly, comprising a first frame and a second frame, the first frame and the second frame being rotatably connected to enable the electronic device to switch between an unfolded state and a folded state; a first display screen and a back cover, respectively arranged on both sides of the frame assembly; wherein the back cover is provided with an opening, the opening being provided with a second display screen, the back cover comprising a base and a leather layer, the base being provided in the frame assembly, the leather layer covering the base, the second display screen being bonded to the base and exposed from the leather layer.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic devices, and specifically relates to an electronic device. Background Art

[0002] In the related art, foldable phones have a back cover with a display screen. The back cover is made of glass, which has a poor texture and increases the weight of the foldable phone. If the leather battery cover is designed similarly to the glass battery cover, with the display screen attached to the back of the battery cover, the following problems will arise:

[0003] 1. The material of the leather battery cover is opaque, and the display screen is attached to the inner surface of the leather battery cover, so the display function cannot be realized;

[0004] 2. The leather battery cover is made of a soft material and cannot provide the same support and protection for the display screen as the glass battery cover.

[0005] Therefore, a new structural form needs to be designed to achieve stable cooperation between the leather battery cover and the display screen. Summary of the Invention

[0006] The present application aims to provide an electronic device that at least solves the technical problem in the related art that a leather battery cover and a display screen cannot be stably matched.

[0007] In order to solve the above technical problems, this application is implemented as follows:

[0008] In a first aspect, an embodiment of the present application proposes an electronic device, comprising: a frame assembly, comprising a first frame and a second frame, the first frame and the second frame being rotatably connected to enable the electronic device to switch between an unfolded state and a folded state; a first display screen and a back cover, respectively arranged on both sides of the frame assembly; wherein the back cover is provided with an opening, the opening is provided with a second display screen, the back cover comprises a base and a leather layer, the base is provided in the frame assembly, the leather layer covers the base, the second display screen is bonded to the base and the second display screen is exposed on the leather layer.

[0009] In an embodiment of the present application, an electronic device includes a frame assembly, a first display screen, a second display screen, and a back cover.

[0010] The back cover includes a base and a leather layer. The leather layer covers the base, and the second display is bonded to the base, with the second display visible through the leather layer. In other words, the leather layer does not obstruct the second display, allowing the second display to be exposed from the base, while the leather layer avoids the second display's mounting position. This satisfies the need for a back cover with a display function, resolving the issue in related art where foldable phones with leather battery covers cannot achieve display functionality.

[0011] Furthermore, the leather layer covers the base, and the opening of the back cover is provided with a second display screen. In other words, the base supports and secures the leather layer and the second display screen. Compared to the leather layer, the base is made of a stronger material. This enhances the structural strength of the back cover and effectively supports the second display screen, reducing the likelihood of deformation and protecting it. This solves the problem in related art where foldable phones with leather battery covers are unable to effectively support the display screen. This ensures a stable fit between the leather-covered back cover and the second display screen.

[0012] In addition, the leather back cover is lighter than the glass back cover. This configuration not only enhances the texture of the back cover, but also helps reduce the weight of the electronic device, which helps to enhance the product's appearance and refinement.

[0013] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 is an exploded view of a portion of the structure of an electronic device according to an embodiment of the present application;

[0016] Figure 2 is a structural schematic diagram of a second display screen according to an embodiment of the present application;

[0017] Figure 3 is an exploded view of a back cover of an embodiment of the present application;

[0018] Figure 4 is a schematic structural diagram of a back cover according to an embodiment of the present application;

[0019] Figure 5 for Figure 4 A partial enlarged view of point A of the back cover shown;

[0020] Figure 6 This is a schematic structural diagram of a back cover and a glue layer according to an embodiment of the present application;

[0021] Figure 7 This is a schematic structural diagram of a flexible circuit board of a second display screen in an embodiment of the present application when in an unfolded state;

[0022] Figure 8 This is a schematic structural diagram of a flexible circuit board of a second display screen in an embodiment of the present application when in a folded state;

[0023] Figure 9 is a structural diagram of the first part of an electronic device according to an embodiment of the present application;

[0024] Figure 10 is a structural diagram of the second part of the electronic device according to an embodiment of the present application;

[0025] Figure 11 This is a partial structural diagram of a second display screen according to an embodiment of the present application;

[0026] Figure 12 This is a schematic structural diagram of a back cover, a second display screen, and a camera according to an embodiment of the present application;

[0027] Figure 13 is a schematic structural diagram of the third part of the electronic device according to an embodiment of the present application;

[0028] Figure 14 This is a schematic structural diagram of a back cover, a second display screen, and a camera according to an embodiment of the present application;

[0029] Figure 15 This is a schematic structural diagram of the fourth part of an electronic device according to an embodiment of the present application.

[0030] Reference numerals:

[0031] Figures 1 to 15 The corresponding relationship between the reference numerals and component names is as follows:

[0032] 100 electronic device, 110 frame assembly, 112 first frame, 114 second frame, 116 mounting groove, 1162 first inclined surface, 120 first display screen, 130 back cover, 132 opening, 134 base, 1342 groove, 1344 support boss, 1346 overflow glue groove, 1348 second inclined surface, 136 leather layer, 150 second display screen, 152 translucent cover plate, 1522 translucent body, 1524 film layer, 154 display part, 156 flexible circuit board, 158 driver chip, 159 display surface, 160 connector, 170 adhesive part, 180 glue layer, 190 camera. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or connection; they can refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] The following combination Figures 1 to 15 An electronic device 100 according to an embodiment of the present application is described.

[0037] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 8 、 Figure 11 、 Figure 13 and Figure 14 As shown, according to some embodiments of the present application, the electronic device 100 includes: a frame assembly 110, including a first frame 112 and a second frame 114, the first frame 112 and the second frame 114 are rotatably connected to enable the electronic device 100 to switch between an unfolded state and a folded state; a first display screen 120 and a back cover 130, respectively arranged on both sides of the frame assembly 110; wherein the back cover 130 is provided with an opening 132, and the opening 132 is provided with a second display screen 150, the back cover 130 includes a base 134 and a leather layer 136, the base 134 is provided in the frame assembly 110, the leather layer 136 covers the base 134, the second display screen 150 is bonded to the base 134 and the second display screen 150 is exposed on the leather layer 136.

[0038] In this embodiment, the electronic device 100 includes a frame assembly 110 , a first display screen 120 , a second display screen 150 and a back cover 130 .

[0039] The first display screen 120 and the back cover 130 are respectively disposed on both sides of the frame assembly 110, that is, the first display screen 120 is disposed on a first side of the frame assembly 110, and the back cover 130 is disposed on a second side of the frame assembly 110. In other words, the first display screen 120 and the back cover 130 are located on different sides of the frame assembly 110.

[0040] The back cover 130 includes a base 134 and a leather layer 136 .

[0041] The back cover 130 is provided with an opening 132, and the second display screen 150 is provided in the opening 132. That is, the base 134 serves as a mounting carrier for the second display screen 150, and has the function of mounting and fixing the second display screen 150. The second display screen 150 covers the opening 132, and the positions of the second display screen 150 and the opening 132 are correspondingly arranged.

[0042] The leather layer 136 covers the base 134, and the second display 150 is bonded to the base 134, with the second display 150 visible through the leather layer 136. In other words, the leather layer 136 does not obstruct the second display 150, allowing the second display 150 to be exposed outside the base 134, while the leather layer 136 avoids the mounting area for the second display 150. This satisfies the requirement for the back cover 130 to have a display function, resolving the problem in related art foldable phones that lack a display function when using a leather battery cover.

[0043] Furthermore, the leather layer 136 covers the base 134, and the second display screen 150 is positioned at the opening 132 of the back cover 130. In other words, the base 134 supports and secures the leather layer 136 and the second display screen 150. Compared to the leather layer 136, the base 134 is made of a stronger material. This enhances the structural strength of the back cover 130, effectively supports the second display screen 150, reduces deformation of the back cover 130, and effectively protects the second display screen 150. This solves the problem in related art where foldable phones using leather battery covers are unable to effectively support the display screen. The back cover with the leather layer 136 and the second display screen 150 are now stably mated.

[0044] In addition, the leather layer 136 is lighter than the glass cover, which not only improves the texture of the back cover 130 but also helps reduce the weight of the electronic device 100, thereby improving the product's appearance and refinement.

[0045] It is understood that the first frame 112 and the second frame 114 are rotatably connected, that is, the first frame 112 can rotate relative to the second frame 114, and similarly, the second frame 114 can rotate relative to the first frame 112. Rotating at least one of the first frame 112 and the second frame 114 can switch the electronic device 100 between the unfolded state and the folded state.

[0046] It can be understood that the leather layer 136 covers the base 134 , that is, the leather layer 136 is located on the exterior surface of the base 134 , and the user can touch and see the leather layer 136 .

[0047] Optionally, the electronic device 100 may be a mobile terminal such as a mobile phone, a wearable device, a tablet computer, a laptop computer, a mobile computer, an augmented reality device (also known as an AR device), a virtual reality device (also known as a VR device), a handheld game console, etc. When the electronic device 100 is a mobile phone, optionally, the electronic device 100 is a foldable mobile phone.

[0048] Optionally, the substrate 134 comprises a polycarbonate substrate.

[0049] In some embodiments, as Figure 12 As shown, the base 134 is provided with a groove 1342, the opening 132 passes through the bottom of the groove 1342, and the second display screen 150 is provided in the groove 1342; along the groove mouth of the groove 1342 to the bottom of the groove 1342, the gap between the groove side wall of the groove 1342 and the side wall of the second display screen 150 gradually increases.

[0050] In this embodiment, the matching structure of the base 134 and the second display screen 150 is further defined, wherein the base 134 is provided with a groove 1342 , and the opening 132 passes through the bottom of the groove 1342 .

[0051] The gap between the sidewalls of the groove 1342 and the sidewalls of the second display screen 150 gradually increases from the opening of the groove 1342 to the bottom of the groove 1342. Alternatively, the gap between the sidewalls of the groove 1342 and the sidewalls of the second display screen 150 gradually decreases from the bottom of the groove 1342 to the opening of the groove 1342. In other words, the gap between the sidewalls of the groove 1342 and the sidewalls of the second display screen 150 is formed into an inner trumpet-shaped opening, which is smaller on the outside and larger on the inside. This arrangement effectively reduces the gap between the back cover 130 and the second display screen 150, thereby improving the streamlined appearance and aesthetics of the electronic device 100. Furthermore, the gap between the sidewalls of the groove 1342 and the sidewalls of the second display screen 150 is formed into an inner trumpet-shaped opening, which is smaller on the outside and larger on the inside. This arrangement can help contain glue and reduce the probability of glue overflow.

[0052] Furthermore, the second display screen 150 is disposed in the groove 1342, which accommodates the second display screen 150. This arrangement increases the contact area between the base 134 and the second display screen 150, and allows for a variety of contact angles between the base 134 and the second display screen 150, thereby improving the effectiveness and feasibility of assembling the base 134 and the second display screen 150. This arrangement also helps reduce the thickness of the electronic device 100, thereby making the electronic device 100 thinner and lighter.

[0053] In some embodiments, as Figure 11 and Figure 13As shown, a first angle is formed between the sidewall of the groove 1342 and the plane where the display surface 159 of the second display screen 150 is located, and the first angle is an acute angle.

[0054] In this embodiment, the structure of groove 1342 is further defined. Optionally, second display screen 150 includes a display surface 159, the plane on which display surface 159 lies serving as a reference plane, and a first angle B formed between the sidewalls of groove 1342 and the reference plane is an acute angle. In other words, the sidewalls of groove 1342 are inclined relative to the reference plane. This provides effective and reliable structural support for the inner, flared gap between the sidewalls of groove 1342 and the sidewalls of second display screen 150, which is narrow on the outside and wide on the inside.

[0055] It can be understood that due to the requirements for demolding the base 134, the tail of the back cover 130 requires a certain angle of demolding slope (that is, the side walls of the groove 1342 need to be tilted). Therefore, the first angle B formed between the side walls of the groove 1342 and the reference surface is an acute angle, which can meet the use requirements of demolding the base 134.

[0056] In some embodiments, as Figure 11 and Figure 13 As shown, the second display screen 150 includes a transparent cover plate 152, which is exposed on the leather layer 136. A second angle is formed between the side wall of the transparent cover plate 152 and the plane where the end surface of the transparent cover plate 152 is exposed from the leather layer 136, and the second angle is an acute angle.

[0057] In this embodiment, the structure of the second display screen 150 is further defined, such that the second display screen 150 includes a translucent cover plate 152, which is exposed from the leather layer 136. The plane where the end surface of the translucent cover plate 152 is exposed from the leather layer 136 serves as a reference plane, and the second angle C formed between the sidewalls of the translucent cover plate 152 and the reference plane is an acute angle. In other words, the sidewalls of the translucent cover plate 152 are inclined relative to the reference plane, thereby providing effective and reliable structural support for the inner, flared gap formed between the sidewalls of the groove 1342 and the sidewalls of the translucent cover plate 152, which is narrow on the outside and wide on the inside.

[0058] In addition, a portion of the side wall of the light-transmitting cover plate 152 of the second display screen 150 is tilted to meet the requirement that the gap between the groove side wall of the groove 1342 and the side wall of the second display screen 150 forms an inner trumpet mouth with a small outside and a large inside.

[0059] In some embodiments, as Figure 4 、 Figure 5 and Figure 13As shown, the second display screen 150 also includes a display portion 154, which is arranged on the side of the transparent cover plate 152 facing the bottom of the groove 1342; the bottom of the groove 1342 is provided with a supporting boss 1344, the supporting boss 1344 is in contact with the transparent cover plate 152, and the supporting boss 1344 and the display portion 154 are arranged side by side on the same side of the transparent cover plate 152.

[0060] In this embodiment, the mating structure of the second display screen 150 and the base 134 is further defined, such that a supporting boss 1344 is provided at the bottom of the groove 1342. The second display screen 150 also includes a display portion 154, which is disposed on the side of the transparent cover plate 152 facing the bottom of the groove 1342. The supporting boss 1344 and the display portion 154 are disposed side by side on the same side of the transparent cover plate 152. Specifically, a portion of the transparent cover plate 152 protrudes beyond the outer peripheral wall of the display portion 154, and the portion of the transparent cover plate 152 that protrudes beyond the outer peripheral wall of the display portion 154 abuts against the supporting boss 1344. In other words, the transparent cover plate 152 completely covers the display portion 154, protecting it and preventing damage to it from being directly acted upon by external forces.

[0061] In addition, the support boss 1344 is in direct contact with the translucent cover plate 152. The support boss 1344 has the function of supporting and fixing the translucent cover plate 152. In this way, the second display screen 150 can be effectively prevented from sinking when under pressure, and the problem of scratching the user caused by the height difference between the second display screen 150 and the back cover 130 can be avoided. The thickness of the adhesive portion 170 can be guaranteed, and the bonding strength of the adhesive portion 170 can be guaranteed.

[0062] Among them, such as Figure 13 As shown, the back cover 130 further includes an adhesive portion 170, which is used to connect the groove wall of the groove 1342 and the second display screen 150. In other words, the groove wall of the groove 1342 and the second display screen 150 are connected via the adhesive portion 170. This arrangement allows the base 134 and the second display screen 150 to be adhesively connected.

[0063] In some embodiments, as Figure 13 As shown, a glue overflow groove 1346 is defined in the groove 1342 , and the glue overflow groove 1346 is disposed close to the supporting boss 1344 .

[0064] In this embodiment, the matching structure of the groove 1342 and the supporting boss 1344 is further defined, so that a glue overflow groove 1346 is provided in the groove 1342, and the glue overflow groove 1346 is located at the supporting boss 1344 and is disposed close to the supporting boss 1344. The glue overflow groove 1346 has the function of accommodating glue, thereby preventing the glue from overflowing onto the display surface 159 of the rear cover 130.

[0065] In some embodiments, there are multiple support bosses 1344 and multiple glue overflow grooves 1346 , and each support boss 1344 is provided with at least one glue overflow groove 1346 ; wherein the multiple support bosses 1344 are arranged at intervals along the circumference of the opening 132 .

[0066] In this embodiment, there are multiple support bosses 1344 and multiple glue overflow grooves 1346, that is, there are multiple support bosses 1344 and multiple glue overflow grooves 1346, and each support boss 1344 is provided with at least one glue overflow groove 1346. In other words, each support boss 1344 has a corresponding glue overflow groove 1346, which serves to contain glue, thereby preventing glue from overflowing at various locations.

[0067] In some other embodiments, the number of the supporting boss 1344 and the number of the glue overflow groove 1346 are both one, and the glue overflow groove 1346 is arranged close to the supporting boss 1344 .

[0068] Optionally, there are multiple support bosses 1344, which are spaced apart along the circumference of the display portion 154. This arrangement increases the contact area between the support bosses 1344 and the light-transmitting cover plate 152, enriches the contact angles between the support bosses 1344 and the light-transmitting cover plate 152, and helps improve the stability and reliability of the assembly of the back cover 130 and the second display screen 150.

[0069] In some embodiments, as Figure 2 、 Figure 7 and Figure 8 As shown, the second display screen 150 also includes: a flexible circuit board 156, which is electrically connected to the display unit 154; a driver chip 158, which is provided on the flexible circuit board 156, and the driver chip 158 and the display unit 154 are provided on the same side of the transparent cover 152; a connector 160, through which the flexible circuit board 156 and the mainboard of the electronic device 100 are electrically connected.

[0070] In this embodiment, the second display screen 150 further includes a flexible circuit board 156 , a driving chip 158 and a connector 160 .

[0071] The flexible circuit board 156 is electrically connected to the display portion 154. A driver chip 158 is disposed on the flexible circuit board 156. The flexible circuit board 156 serves as a mounting carrier for the driver chip 158, securing and securing the driver chip 158. During assembly of the second display screen 150, the flexible circuit board 156 has an unfolded state and a folded state. Therefore, the driver chip 158 can be driven by the flexible circuit board 156 to switch between the unfolded and folded states.

[0072] Optionally, when assembling the back cover 130 and the second display screen 150, glue is first applied to the opening 132 of the base 134 to form an annular adhesive layer. The flexible circuit board 156, equipped with the driver chip 158, is then flipped over to a folded position and secured to the opening 132 of the base 134, such that the driver chip 158 is located on the side of the display 154 facing away from the transparent cover 152. In other words, the display 154 is positioned between the driver chip 158 and the transparent cover 152. The flexible circuit board 156 is then placed in a pressure-holding fixture for a predetermined period of time. Once the annular adhesive layer solidifies, the fixture is removed. Finally, the flexible circuit board 156 is flipped over to an unfolded position and attached to the corresponding fixing groove in the back cover 130.

[0073] That is, when the flexible circuit board 156 and the display unit 154 are assembled, the driver chip 158 and the display unit 154 are located on the same side of the light-transmitting cover plate 152. In the related art, the display unit of the assembled back cover assembly is located between the driver chip and the light-transmitting cover plate. This application rationally arranges the matching structure of the light-transmitting cover plate 152, the display unit 154, the flexible circuit board 156, and the driver chip 158. Compared to the back cover and display structure in the related art, this arrangement helps reduce the overall thickness of the electronic device 100.

[0074] In some embodiments, as Figure 1 and Figure 15 As shown, a mounting groove 116 is provided on one side of the frame assembly 110, and the back cover 130 is provided in the mounting groove 116. Along the thickness direction of the electronic device 100, the distance from the end surface of the second display screen 150 away from the bottom of the groove 1342 to the open end of the mounting groove 116 is greater than 0 mm and less than or equal to 2 mm.

[0075] In this embodiment, the structure of the electronic device 100 is further defined. A mounting groove 116 is provided on one side of the frame assembly 110 . The back cover 130 is provided in the mounting groove 116 . The back cover 130 is assembled with the frame assembly 110 .

[0076] The mounting groove 116 of the frame assembly 110 has an open end. Along the thickness direction of the electronic device 100, the end surface of the second display screen 150 facing away from the bottom of the groove 1342 can be located below the open end of the mounting groove 116, and the end surface of the second display screen 150 facing away from the bottom of the groove 1342 can also be located above the open end of the mounting groove 116.

[0077] The positional relationship between the end surface of the second display screen 150 facing away from the bottom of the groove 1342 and the open end of the mounting groove 116 is further defined, such that, along the thickness direction of the electronic device 100, the distance between the end surface of the second display screen 150 facing away from the bottom of the groove 1342 and the open end of the mounting groove 116 is greater than 0 mm and less than or equal to 2 mm. This arrangement shortens the distance between the open end of the mounting groove 116 of the frame assembly 110 and the end surface of the second display screen 150 facing away from the bottom of the groove 1342. When the electronic device 100 falls, the back cover 130 contacts the ground first. However, since the open end of the frame assembly 110 is closer to the end face of the second display screen 150 that faces away from the bottom of the groove 1342, on the one hand, the frame assembly 110 can share the external force acting on the back cover 130 to effectively reduce the degree of sinking of the back cover 130. On the other hand, the deformation of the back cover 130 under the action of external force will drive the second display screen 150 connected to the back cover 130 to sink. In this way, the open end of the frame assembly 110 will be higher than the second display screen 150, and the frame assembly 110 will contact the ground before the second display screen 150. Since the material of the frame assembly 110 is relatively hard, it will not deform further. Therefore, it can effectively withstand the impact of the ground, protect the second display screen 150, and reduce the probability of the second display screen 150 being broken.

[0078] Optionally, along the thickness direction of the electronic device 100, the open end of the groove 1342 of the back cover 130 is located above the end surface of the second display screen 150 away from the bottom of the groove 1342, or the open end of the groove 1342 of the back cover 130 and the end surface of the second display screen 150 away from the bottom of the groove 1342 are located in the same plane.

[0079] Optionally, along the thickness direction of the electronic device 100, the distance from the end surface of the second display screen 150 away from the bottom of the groove 1342 to the open end of the mounting groove 116 includes 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm and 1.8 mm, etc., which are not listed here one by one.

[0080] In some embodiments, as Figure 15 As shown, a portion of the side wall of the mounting groove 116 is tilted to form a first tilted surface 1162, and a portion of the base 134 corresponding to the first tilted surface 1162 forms a second tilted surface 1348. The first tilted surface 1162 and the second tilted surface 1348 have the same tilting direction, and a third angle is formed between the first tilted surface 1162 and the plane where the display surface 159 of the second display screen 150 is located, and the third angle is an acute angle.

[0081] In this embodiment, the mating structure of the frame assembly 110 and the base 134 is further defined. Optionally, the frame assembly 110 is provided with a mounting groove 116, a portion of the groove sidewall of the mounting groove 116 being inclined to form a first inclined surface 1162, and the base 134 is formed with a second inclined surface 1348. The first inclined surface 1162 and the second inclined surface 1348 are arranged opposite and spaced apart. The first inclined surface 1162 and the second inclined surface 1348 have the same inclination direction, and a third angle D is formed between the first inclined surface 1162 and the plane of the display surface 159 of the second display screen 150. The third angle D is an acute angle. In other words, the mounting groove 116 has a flared structure. This arrangement enables the gap between the first inclined surface 1162 and the second inclined surface 1348 to form an inner trumpet mouth that is small on the outside and large on the inside, or the spacing of the gaps between the first inclined surface 1162 and the second inclined surface 1348 is equal. In this way, the fitting gap between the frame assembly 110 and the back cover 130 can be effectively reduced, which is beneficial to improving the streamlined appearance and aesthetics of the electronic device 100.

[0082] Optionally, a third angle D formed between the first inclined surface 1162 and the plane where the display surface 159 of the second display screen 150 is located is greater than 0° and less than or equal to 45°. For example, the third angle D includes 5°, 10°, 15°, 20°, 25°, 30°, and 35°, etc., which are not listed here one by one.

[0083] Optionally, the electronic device 100 includes a frame assembly 110, a first display screen 120, a second display screen 150, and a back cover 130. The back cover 130 includes a base 134 and a leather layer 136. The second display screen 150 is a secondary screen.

[0084] Glue is applied to the secondary screen and bonded to the base 134 under pressure. The flexible circuit board 156 of the second display screen 150 is attached to the back of the back cover 130. The back cover 130 and the secondary screen are combined to form the back cover 130 part of the upper body of the up-down folding phone.

[0085] The back cover 130 of the present application can meet the user's demand for a leather back cover 130 while optimizing the layout of the electronic device 100, thereby reducing the thickness of the electronic device 100. It also meets the requirements of manufacturability, structural reliability, and exquisite and refined appearance.

[0086] The sub-screen includes a light-transmitting cover plate 152 (eg, the light-transmitting cover plate 152 includes a glass cover plate), a display portion 154 , a driving chip 158 and a connector 160 .

[0087] like Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10As shown, glue is first applied to the lower half of the back cover 130 to form a circular glue layer 180. The secondary screen's flexible circuit board 156 is then pre-folded and secured within the secondary screen. The secondary screen is then vertically assembled onto the back cover 130 and placed in a pressure-holding fixture for a specified period of time. Once the glue has completely cured, the secondary screen is removed from the fixture. After removal, the folded flexible circuit board 156 is folded back and attached to the corresponding fixing groove in the back cover 130. The camera 190 decorative ring and the double-sided tape on the back cover 130 are then assembled.

[0088] Finally, the connector 160 is fastened to the connector 160 on the mainboard of the electronic device 100 to realize the electrical connection between the secondary screen and the entire device, and the entire back cover 130 and the second display screen 150 are bonded together with the frame assembly 110 by double-sided tape.

[0089] The second display screen 150 includes a light-transmitting cover plate 152 , a display portion 154 , a flexible circuit board 156 , and a driving chip 158 .

[0090] In the second display screen 150, the driver chip 158 is the thickest, and the position of the driver chip 158 determines the thickness bottleneck of the back cover 130. In this application, Figure 9 and Figure 10 As shown, the driver chip 158 is located on the flexible circuit board 156 of the secondary screen. The driver chip 158 and the display unit 154 are arranged side by side on one side of the light-transmitting cover 152. This arrangement effectively reduces the thickness of the back cover 130. Because the driver chip 158 is located on the flexible circuit board 156, it can be placed anywhere within the device, depending on the stacking requirements.

[0091] like Figure 13 As shown, the rear cover 130 cooperates with the secondary screen in the X direction (horizontal direction) and the Y direction (vertical direction). Due to the requirement of the base 134 to be ejected from the mold, the tail position requires a certain draft angle B (that is, the sidewalls of the groove 1342 need to be tilted), for example, the angle B is 88.5°. In this application, Figure 13 As shown, when cutting the transparent cover plate 152, the cutter is tilted at a certain angle so that the second angle C formed between the sidewall of the transparent cover plate 152 and the plane where the end surface of the transparent cover plate 152 that exposes the leather layer 136 is not a right angle. For example, the second angle C is 86.5°. Thus, after the base 134 and the second display screen 150 are assembled, an inner flared gap, smaller on the outside and larger on the inside, is formed between the sidewalls of the groove 1342 and the sidewalls of the transparent cover plate 152. This arrangement effectively reduces the gap between the back cover 130 and the secondary screen. It also helps contain glue and reduce overflow.

[0092] In addition, if Figure 4 and Figure 5As shown, the back cover 130 and the sub-screen cooperate in the Z direction, and multiple support bosses 1344 are evenly arranged around the entire circle of the back cover 130. The support bosses 1344 are in direct contact with the light-transmitting cover plate 152 of the sub-screen. This can effectively prevent the sub-screen from sinking during pressure maintenance and avoid the scratching problem caused by the height difference between the sub-screen and the back cover 130. At the same time, it can also ensure sufficient glue height and bonding strength. And when the glue path coincides with the support boss 1344, a glue overflow groove 1346 is provided near the support boss 1344 to prevent glue from overflowing to the exterior surface.

[0093] In the drop reliability test of the whole machine, when the whole machine is in a folded state and lands at the left or right lower corner of the sub-screen, it is very easy to cause the transparent cover plate 152 of the sub-screen to crack.

[0094] In the present application, the electronic device 100 includes a frame assembly 110, the frame assembly 110 is provided with a mounting groove 116, a portion of the groove side wall of the mounting groove 116 is inclined to form a first inclined surface 1162, and the portion of the base 134 corresponding to the first inclined surface 1162 forms a second inclined surface 1348. The first inclined surface 1162 and the second inclined surface 1348 have the same inclination direction, and a third angle D is formed between the first inclined surface 1162 and the plane where the display surface 159 of the second display screen 150 is located. The third angle D is greater than 0° and less than or equal to 45°.

[0095] The frame assembly 110 is simultaneously raised to a position close to the outer surface of the back cover 130. Thus, when the electronic device 100 falls, although the back cover 130 still contacts the ground first, the frame assembly 110 is substantially flush with the back cover 130, effectively reducing the extent of the back cover 130's sinking. Furthermore, after the back cover 130 deforms and sinks, the frame assembly 110 touches the ground before the secondary screen. The frame assembly 110 is made of a relatively hard material and will not deform further, effectively withstanding the impact of the ground and protecting the secondary screen.

[0096] In the related art, the frame assembly is located below the back cover. Optionally, the surface stress of the secondary screen is reduced from 1943 MPa to 814 MPa. Experimental testing has shown that when a folded mobile phone in the related art is placed in a 1-meter-deep iron barrel for a rolling test, the secondary screen will crack within five drops.

[0097] The mobile phone of the present application was placed in a 1-meter-deep iron barrel in a folded state for a rolling test. After the drop test, the secondary screen still did not crack. The back cover 130 of the present application and the secondary screen are assembled together by glue, and other forms can also be used, such as double-sided tape, buckle, interference fit, etc. Figure 13As shown, the transparent cover 152 includes a transparent body 1522 and a film layer 1524 . The transparent body 1522 is exposed from the leather layer 136 . The film layer 1524 is disposed on the side of the transparent body 1522 facing the bottom of the groove 1342 . The support boss 1344 abuts against the film layer 1524 .

[0098] Specifically, Figure 7 The arrow in the figure indicates the folding direction of the flexible circuit board.

[0099] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0100] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that: include: A frame assembly includes a first frame and a second frame, wherein the first frame and the second frame are rotatably connected to enable the electronic device to switch between an unfolded state and a folded state; A first display screen and a back cover are respectively arranged on two sides of the frame assembly; The back cover is provided with an opening, the opening is provided with a second display screen, the back cover comprises a base and a leather layer, the base is provided on the frame assembly, the leather layer covers the base, the second display screen is bonded to the base and exposed on the leather layer; The base body is provided with a groove, the opening passes through the bottom of the groove, and the second display screen is provided in the groove; A mounting groove is provided on one side of the frame assembly, and the back cover is provided in the mounting groove. Along the thickness direction of the electronic device, a distance from an end surface of the second display screen facing away from the bottom of the groove to an open end of the mounting groove is greater than 0 mm and less than or equal to 2 mm, and the frame assembly is flush with the back cover. A portion of the side wall of the mounting groove is tilted to form a first inclined surface, and a portion of the base corresponding to the first inclined surface forms a second inclined surface. The first inclined surface and the second inclined surface have the same inclination direction. A third angle is formed between the first inclined surface and the plane where the display surface of the second display screen is located, and the third angle is an acute angle.

2. The electronic device according to claim 1, wherein From the groove opening to the groove bottom of the groove, the gap between the groove sidewall of the groove and the sidewall of the second display screen gradually increases.

3. The electronic device according to claim 2, wherein: A first angle is formed between the groove sidewall of the groove and the plane where the display surface of the second display screen is located, and the first angle is an acute angle.

4. The electronic device according to claim 2, wherein: The second display screen includes a transparent cover plate, which is exposed on the leather layer. A second angle is formed between the side wall of the transparent cover plate and the plane where the end surface of the transparent cover plate exposed on the leather layer is located. The second angle is an acute angle.

5. The electronic device according to claim 4, characterized in that The second display screen further includes a display portion, which is provided on a side of the light-transmitting cover plate facing the bottom of the groove; A supporting boss is provided at the bottom of the groove, the supporting boss abuts against the light-transmitting cover plate, and the supporting boss and the display portion are arranged side by side on the same side of the light-transmitting cover plate.

6. The electronic device according to claim 5, characterized in that A glue overflow groove is provided in the groove, and the glue overflow groove is arranged close to the supporting boss.

7. The electronic device according to claim 6, wherein: There are multiple supporting bosses and multiple glue overflow grooves, and each supporting boss is provided with at least one glue overflow groove; Wherein, the plurality of support bosses are distributed at intervals along the circumference of the opening.

8. The electronic device according to claim 5, wherein: The second display screen further includes: a flexible circuit board, electrically connected to the display portion; A driver chip is provided on the flexible circuit board, and the driver chip and the display portion are provided on the same side of the light-transmitting cover plate; A connector is provided, through which the flexible printed circuit board and the mainboard of the electronic device are electrically connected.

Images