Mobile terminal protection shell

Abstract

The embodiment of the utility model discloses a mobile terminal protection shell. The mobile terminal protection shell comprises a shell body, the shell body comprises a containing cavity used for containing a mobile terminal and a bottom plate, the bottom plate is arranged at the bottom of the containing cavity, and the bottom plate comprises a first opening; the display screen is embedded in the first opening, and the thickness of the bottom plate is larger than or equal to that of the display screen. The display screen is embedded into the bottom plate of the protective shell, and the thickness of the bottom plate is larger than or equal to that of the display screen, so that stress generated by elastic deformation of the protective shell is prevented from being transmitted to the display screen, and the display screen is protected from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of protective case technology, and in particular to a mobile terminal protective case. Background Technology

[0002] With the increasing intelligence of mobile devices such as tablets and smartphones, people are using them more and more frequently, and they have now become an indispensable part of people's lives. During use, people often use protective cases on their mobile devices, and now smart protective cases that can light up or even display patterns are gradually appearing on the market.

[0003] Existing smart protective cases are usually made of a single piece of elastic material. During installation or use, the display screen inside the case is easily damaged by bending forces. Utility Model Content

[0004] This utility model provides a mobile terminal protective case to solve the problem that the inside of existing protective cases is easily damaged.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model embodiment provides a mobile terminal protective case, including:

[0007] The housing includes a receiving cavity for accommodating a mobile terminal and a bottom plate, the bottom plate being disposed at the bottom of the receiving cavity and including a first opening;

[0008] The display screen is embedded in the first opening, and the thickness of the base plate is greater than or equal to the thickness of the display screen.

[0009] Optionally, it also includes a circuit board, which includes: a sensing component, a control circuit board, and a first flexible circuit board;

[0010] The base plate also includes a second opening communicating with the first opening, and the sensing component, control circuit board and first flexible circuit board are embedded in the second opening;

[0011] The first flexible circuit board is stacked with the display screen. One end of the first flexible circuit board is fixedly connected to the control circuit board, and the other end is fixedly connected to the side of the display screen away from the control circuit board.

[0012] Optionally, the base plate further includes a third opening disposed on the side of the first opening away from the second opening, the third opening communicating with the first opening;

[0013] A second flexible circuit board is provided on the side of the display screen away from the control circuit board, and the second flexible circuit board is fixedly connected to the first flexible circuit board within the third opening.

[0014] Optionally, the base plate further includes a camera hole, and the second opening is located on the same side as the camera hole.

[0015] Optionally, it may also include: a bracket or a magnetic ring, wherein the side of the base plate away from the receiving cavity further includes a groove surrounding the first opening, and the bracket is disposed in the groove.

[0016] Optionally, the bracket or magnetic ring includes a light-transmitting area, the area of ​​which is less than or equal to the area of ​​the display area of ​​the display screen.

[0017] Optionally, a cover plate may also be included, the cover plate including a through hole that allows the bracket or magnetic ring to pass through, the area of ​​the through hole being smaller than the area of ​​the first opening.

[0018] Optionally, the bracket includes a support part, a rotating part, and a fixing part, wherein the support part is connected to the rotating part via a rotating shaft;

[0019] The fixing part is sleeved around the rotating part, and the rotating part and the fixing part can rotate relative to each other in the same plane.

[0020] Optionally, both the support portion and the rotating portion are opaque annular plates, and the fixing portion includes a transparent circular plate, a side plate surrounding the transparent circular plate, and a limiting plate, wherein the limiting plate is disposed on the side plate away from the transparent circular plate;

[0021] The inner ring area of ​​the support part and the rotating part is equal to the light-transmitting area of ​​the bracket.

[0022] Optionally, it also includes a graphene heat sink, which is disposed on the side of the base plate near the receiving cavity;

[0023] The base plate and the shell are integrally formed or bonded together.

[0024] Preferably, the display screen includes an electrophoretic display screen, an electronic powder fluid display screen, a cholesterol liquid crystal display screen, a bistable nematic liquid crystal display screen, an interferometer regulator display screen, or an electrowetting display screen.

[0025] This utility model provides a mobile terminal protective case including a housing, the housing including a receiving cavity for accommodating the mobile terminal; a base plate disposed at the bottom of the receiving cavity, the base plate including a first opening; and a display screen embedded in the first opening, the thickness of the base plate being greater than or equal to the thickness of the display screen. By embedding the display screen inside the base plate of the protective case while simultaneously ensuring that the thickness of the base plate is greater than or equal to the thickness of the display screen, stress generated by the elastic deformation of the protective case is prevented from being transmitted to the display screen, thereby protecting the display screen from damage. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a mobile terminal protective case provided in an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the mobile terminal protective case provided in this embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the base plate of the mobile terminal protective case provided in this embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the bracket provided in an embodiment of the present utility model;

[0031] Figure 5 This is provided by the embodiment of the present utility model. Figure 4 Enlarged structural diagram of section A in the middle;

[0032] Reference numerals: 00 housing, 1 receiving cavity, 2 bottom plate, 21 second opening, 22 first opening, 23 third opening, 24 groove, 25 camera hole, 3 display screen, 31 display area, 32 second flexible circuit board, 4 circuit board, 41 sensing component, 42 control circuit board, 43 first flexible circuit board, 5 cover plate, 6 bracket, 61 support part, 62 rotating part, 63 fixing part, 631 transparent circular plate, 632 side plate, 633 limiting plate, 64 rotating shaft, 65 magnetic plate, 7 graphene heat sink, 8 decorative part. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] Mobile terminals can be tablets, mobile phones, or other mobile terminal devices. To protect mobile terminals, users are used to putting protective cases on the outside of the mobile terminals before use, in order to reduce the probability of damage in the event of bumps or drops. For the convenience of installation and comfort during use, protective cases are generally made of elastic materials, but this can easily damage the display screen inside the protective case.

[0035] Based on the above-mentioned technical problems, this embodiment proposes the following solutions:

[0036] Figure 1 This is a structural schematic diagram of a mobile terminal protective case provided in an embodiment of this utility model. See also... Figure 1 The mobile terminal protective shell provided in this embodiment of the utility model includes a shell 00, the shell 00 includes a receiving cavity 1 for accommodating the mobile terminal and a bottom plate 2, the bottom plate 2 is disposed at the bottom of the receiving cavity 1, the bottom plate 2 includes a first opening 21; a display screen 3, the display screen 3 is embedded in the first opening 21, and the thickness of the bottom plate 2 is greater than or equal to the thickness of the display screen 3.

[0037] Specifically, the base plate 2 includes a first opening 21, in which the display screen 3 is embedded. This can isolate the stress generated when the base plate 2 undergoes elastic deformation, preventing the stress from being transmitted to the display screen 3 and damaging the display screen.

[0038] Specifically, when the thickness of the base plate 2 is greater than the thickness of the display screen 3, the first opening 21 can penetrate the base plate 2, or the side of the first opening 21 near the receiving cavity 1 can be a closed plane. When the first opening 21 penetrates the base plate 2, since the display screen 3 is embedded in the first opening 21 and the thickness of the base plate 2 is greater than the thickness of the display screen 3, the edge of the first opening 21 is higher than the outer edge of the display screen 3. When the base plate 2 deforms, the edge of the first opening 2 can serve as a stress-relieving part, thereby isolating most of the deformation stress on the outer periphery of the display screen 3, thus better protecting the display screen 3. When the side of the first opening 21 near the receiving cavity 1 is a closed plane, the display screen 3 can be isolated from the back of the mobile terminal, preventing the heat generated by the mobile terminal during operation from being transferred to the back of the display screen 3, thereby affecting the normal operation of the display screen 3. When the thickness of the base plate 2 is equal to the thickness of the display screen 3, the first opening 21 penetrates the base plate 2, which can not only reduce the thickness of the base plate 2 and thus reduce the thickness of the protective shell, but also reduce the probability of the display screen 3 being bent and damaged. On the other hand, when the first opening 21 penetrates the base plate 2, the housing cavity can be a cavity with a closed bottom. When the first opening 21 does not penetrate the base plate 2, the housing cavity can be a cavity with an open bottom.

[0039] This embodiment provides a mobile terminal protective case including a housing 00, which includes a receiving cavity 1 for accommodating the mobile terminal and a base plate 2. The base plate 2 is disposed at the bottom of the receiving cavity 1 and includes a first opening 21. A display screen 3 is embedded in the first opening 21, and the thickness of the base plate 2 is greater than or equal to the thickness of the display screen 3. By embedding the display screen 3 into the base plate 2 of the protective case and simultaneously ensuring that the thickness of the base plate 2 is greater than or equal to the thickness of the display screen, stress generated by the elastic deformation of the protective case is prevented from being transmitted to the display screen 3, thereby protecting the display screen from damage.

[0040] Figure 2 This is a schematic diagram of the internal structure of a mobile terminal protective case according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of the base plate of a mobile terminal protective case according to an embodiment of the present invention. (Refer to...) Figure 2 and Figure 3 The mobile terminal protective case provided in this embodiment also includes a circuit board 4, which includes a sensing component 41, a control circuit board 42, and a first flexible circuit board 43. The base plate 2 also includes a second opening 22 communicating with the first opening 21. The sensing component 41, the control circuit board 42, and the first flexible circuit board 43 are embedded in the second opening 22. The first flexible circuit board 43 is stacked with the display screen 3. One end of the first flexible circuit board 43 is fixedly connected to the control circuit board 42, and the other end is fixedly connected to the side of the display screen 3 away from the control circuit board 42.

[0041] Specifically, circuit board 4 includes a sensing component 41, a control circuit board 42, and a first flexible circuit board 43. The sensing component 41 can be an induction coil. The induction coil communicates with a mobile terminal with NFC functionality using Near Field Communication (NFC) technology. It also obtains power from the radio frequency field generated by the mobile terminal to power the control circuit board 42 and the display screen 3. When the user changes the content displayed on the display screen, the mobile terminal uses its built-in NFC function to transmit control and power signals to the induction coil. The induction coil first transmits the power signal to the control circuit board, and then the control circuit board 42 transmits the power signal to the display screen 3. The induction coil 41 then transmits the received control signal to the control circuit board 42. After parsing the control signal, the control circuit board 42 controls the display screen 3 to display the corresponding content, thus completing the change of the display screen content. Using NFC technology for inter-device communication and power supply is a relatively mature technology in the prior art, and the applicant will not elaborate further here.

[0042] Specifically, the base plate 2 also includes a second opening 22 that communicates with the first opening 21. The second opening 22 can be formed by two openings connected together, or it can be a single opening, such as... Figure 2 The second opening 22 shown is formed by two openings connected together. The sensing component 41 and the control circuit board 42 are respectively disposed in one opening. The second opening 22 can be able to penetrate the bottom plate 2, or the side of the second opening 22 near the receiving cavity 1 can be a closed plane. Preferably, the second opening 22 penetrating the bottom plate 2 can shorten the distance between the sensing coil and the mobile terminal and reduce losses.

[0043] Specifically, the first flexible circuit board 43 and the display screen 3 are stacked together. One end of the first flexible circuit board 43 is fixedly connected to the control circuit board 42, and the other end is fixedly connected to the side of the display screen 3 away from the control circuit board 42. The display screen 3 and the first flexible circuit board 43 are generally bonded together with conductive adhesive. Since the width of the non-display area on the bonded side of the display screen 3 is greater than the width of the non-display area on the unbonded side, in order to make the display area of ​​the display screen 3 closer to the center of the base plate 2, in this embodiment, the connection end of the display screen 3 and the first flexible circuit board 43 is placed on the side of the display screen 3 away from the control circuit board 42. Through the above arrangement, the distance between the display area of ​​the display screen 3 and the control circuit board 42 can be reduced, making it easier to bring the display area of ​​the display screen 3 closer to the center of the base plate 2. More preferably, the geometric center of the display area of ​​the display screen 3 coincides with the geometric center of the base plate.

[0044] Furthermore, based on the above embodiments, refer to... Figure 3In another embodiment of the present invention, the bottom plate 2 of the mobile terminal protective shell further includes a third opening 23 disposed on the side of the first opening 21 away from the second opening 22, the third opening 23 being connected to the first opening 21; a second flexible circuit board 32 is disposed on the side of the display screen 3 away from the control circuit board 42, the second flexible circuit board 32 being fixedly connected to the first flexible circuit board 43 within the third opening 23.

[0045] Specifically, to reduce the thickness of the mobile terminal protective case, the display screen 3 also includes a second flexible circuit board 32 disposed on the side away from the control circuit board 42. The second flexible circuit board 32 is fixedly connected to the first flexible circuit board 43. The first flexible circuit board 43 transmits the parsed control signals and power supply signals to the display screen 3 through the second flexible circuit board 32. On the other hand, a third opening 23 is opened on the side of the first opening 21 away from the second opening 22 on the base plate 2. The third opening 23 is used to place the connection end of the first flexible circuit board 43 and the second flexible circuit board 32. With the above settings, the maximum thickness of the base plate 2 is the thickness of the display screen 3 plus the thickness of one layer of the first flexible circuit board 43, or the thickness of one layer of the first flexible circuit board 43 and the thickness of one layer of the second flexible circuit board 32. In the prior art, the connection usually requires bending the first flexible circuit board and bonding it to the bonding area of ​​the display screen. At this time, the thickness of the area where the display screen is placed on the base plate is the thickness of two layers of the first flexible circuit board plus the thickness of the display screen. This embodiment reduces the thickness of the base plate by the equivalent of one layer of the first flexible circuit board, thereby reducing the thickness of the mobile terminal protective case.

[0046] Furthermore, based on the above embodiments, continue to refer to... Figure 3 In another embodiment of the present invention, the bottom plate 2 of the mobile terminal protective shell also includes a camera hole 25, and the second opening 22 and the camera hole 25 are disposed on the same side as the first opening 21.

[0047] Specifically, the base plate 2 also includes a camera hole 25, which is a through hole for the rear camera on the mobile terminal to pass through. In the prior art, the NFC function chip is generally placed on the side of the rear camera in the mobile terminal. By setting the second opening 22 and the camera hole 25 on the same side as the first opening 21, the induction coil 41 can be set to correspond with the NFC function chip on the mobile terminal, thereby improving the transmission efficiency of control signal and power supply signal.

[0048] Furthermore, based on the above embodiments, another embodiment of the present invention provides a mobile terminal protective shell that further includes: a bracket 6 or a magnetic ring (not shown in the figure), and the bottom plate 2 further includes a groove 24 surrounding the first opening 21 on the side away from the receiving cavity 1, and the bracket 6 or the magnetic ring is disposed in the groove 24.

[0049] For details, please refer to Figure 1 For mobile terminal protective cases including stands, combined with Figure 3 The bracket 6 is preferably circular, and the base plate 2 further includes a groove 24 surrounding the first opening 21. The groove 24 can be respectively located on the outer edge of the first opening 21 away from the third opening 23. To accommodate the shape of the bracket 6, the shape of the groove 24 can be arc-shaped, and the number of grooves 24 can be three. In this embodiment, by opening a groove surrounding the first opening 21 on the base plate, not only can the light-transmitting area of ​​the bracket 6 be accurately aligned with the display area of ​​the display screen 3 when assembling the bracket 6, but the thickness of the mobile terminal protective shell can also be further reduced.

[0050] Furthermore, the bracket 6 or magnetic ring includes a light-transmitting area, the area of ​​which is less than or equal to the display area of ​​the display screen 3.

[0051] Specifically, in order to ensure that the light-transmitting area of ​​the bracket 6 or magnetic ring is completely filled with the display content during the use of the mobile terminal protective case, thereby improving the display effect, in this embodiment, the area of ​​the light-transmitting area is set to be less than or equal to the area of ​​the display area of ​​the display screen 3. That is, when an image is displayed in the display area of ​​the display screen 3, the image in the display area can completely fill the light-transmitting area, avoiding the situation where the image is not fully displayed or fails to completely fill the light-transmitting area, thus improving the display effect of the mobile terminal protective case.

[0052] Optionally, the shapes of the light-transmitting area and the display area of ​​the display screen 3 can be the same or different. For example, the light-transmitting area is circular and the display area of ​​the display screen 3 is quadrilateral. When the area of ​​the light-transmitting area is smaller than the area of ​​the display area of ​​the display screen, in order to increase the area of ​​the image displayed on the back of the mobile terminal protective case, the edge of the light-transmitting area can be tangent to three sides of the display area of ​​the display screen 3. This is the installation method with the largest area when the light-transmitting area is circular, that is, when the light-transmitting area is circular, the area of ​​the light-transmitting area is smaller than the area of ​​the display area of ​​the display screen. In another case, when the shapes of the light-transmitting area and the display area of ​​the display screen 3 are the same, such as both being quadrilateral or circular, in order to ensure that the image of the display area can completely fill the light-transmitting area, the area of ​​the light-transmitting area can be equal to or smaller than the area of ​​the display area of ​​the display screen 3.

[0053] Furthermore, based on the above embodiments, continue to refer to... Figure 1 Another embodiment of the present invention provides a mobile terminal protective case that also includes a cover plate 5, the cover plate having a through hole that allows the bracket 6 or magnetic ring to pass through, the area of ​​the through hole being smaller than the area of ​​the first opening 21.

[0054] Specifically, in order to better protect the display screen 3 and the circuit board from working normally inside the base plate 2, the mobile terminal protective case provided in this embodiment also includes a cover plate 5. The cover plate 5 includes a through hole that allows the bracket 6 or the magnetic ring to pass through. The area of ​​the through hole can be slightly larger than the area of ​​the outer edge of the bracket 6, so that the bracket 6 can pass smoothly through the through hole when the mobile terminal protective case is assembled. On the other hand, the area of ​​the through hole can also be equal to the area of ​​the outer edge of the bracket 6, so that the cover plate 5 and the bracket 6 can completely cover the display screen 3 after being installed on the base plate 2, preventing the user from seeing the display screen 3 or circuit board and other components inside the mobile terminal protective case from the back of the mobile terminal protective case during use, thus affecting the aesthetics.

[0055] Optionally, the cover plate 5 also includes a clearance that is completely consistent with the camera hole 25 on the base plate, which is also for the rear camera of the mobile terminal to pass through. In order to make the clearance on the cover plate 5 and the camera hole on the base plate 2 look integrated in appearance, a decorative piece 8 is also provided in this embodiment. The shape of the decorative piece is the same as that of the camera hole, for example, a rounded rectangle.

[0056] Based on the above embodiments, Figure 4 This is a structural schematic diagram of the bracket provided in an embodiment of the present invention, for reference. Figure 4 Another embodiment of the present invention provides a bracket 6 including a support part 61, a rotating part 62 and a fixing part 63. The support part 61 is connected to the rotating part 62 through a rotating shaft 64. The fixing part 63 is sleeved on the periphery of the rotating part 62. The rotating part 62 and the fixing part 63 can rotate relative to each other in the same plane.

[0057] Specifically, the rotating shaft 64 can be a flat hinge, including a first leaf piece riveted to the support portion and a second leaf piece riveted to the rotating portion. The first and second leaf pieces are connected by a central cylindrical hinge shaft, that is, a metal shaft is wrapped around the intersection of the first and second leaf pieces to form a rotatable cylindrical joint, thereby facilitating relative rotation between the support portion and the rotating portion. For example, when a user uses a mobile terminal protective case with this embodiment, the support portion can be rotated to the open state, such as... Figure 1 As shown, this is how support for mobile terminals is achieved.

[0058] Specifically, in this embodiment, not only can the support part 61 and the rotating part 62 rotate relative to each other, but the rotating part 62 and the fixed part 63 can also rotate relative to each other in the same plane. By sleeved on the periphery of the rotating part 62, the rotating part 62 and the fixed part 63 can rotate relative to each other in the same plane. The combination of the two rotation methods greatly enhances the flexibility of using the bracket 6.

[0059] Furthermore, based on the above embodiments, Figure 5 This is provided by the embodiment of the present utility model. Figure 4 Please refer to the enlarged structural diagram of section A. Figure 4 Both the support portion 61 and the rotating portion 62 are opaque annular plates. The fixing portion 63 includes a transparent circular plate 631, a side plate 632 surrounding the transparent circular plate, and a limiting plate 633. The limiting plate 633 is located on the side of the side plate 632 away from the transparent circular plate 631. The inner ring area of ​​the support portion 61 and the rotating portion 62 is equal to the light-transmitting area of ​​the bracket 6.

[0060] Specifically, both the support part 61 and the rotating part 62 are opaque annular plates, which can better cover the internal components of the mobile terminal protective case and prevent users from seeing the internal display screen 3 and other components when using the mobile terminal protective case, thus affecting the aesthetics. Optionally, a magnetic piece is also provided on the side of the support part 61 near the rotating part 62, so that the support part 61 fits tightly with the rotating part when it is stored.

[0061] Specifically, in order to better realize the relative rotation of the rotating part 62 and the fixed part 63 in the same plane, the fixed part 63 includes a transparent circular plate 631, a side plate 632 surrounding the transparent circular plate, and a limiting plate 633. The limiting plate 633 is located on the side of the side plate 632 away from the transparent circular plate 631. The fixed part 63 is sleeved around the rotating part 62, that is, the rotating part 62 is located in the limiting space formed by the transparent circular plate 631, the side plate 632 and the limiting plate 633, thereby forming a rotating structure in which the rotating part 62 and the fixed part 63 rotate relative to each other in the same plane.

[0062] Furthermore, based on the above embodiments, see below. Figure 1 The mobile terminal protective case provided in this embodiment also includes a graphene heat sink 7, which is disposed on the side of the base plate 2 near the receiving cavity 1; the base plate and the housing are integrally formed or bonded together.

[0063] Preferably, the display screen 3 includes an electrophoretic display screen, an electronic powder fluid display screen, a cholesterol liquid crystal display screen, a bistable nematic liquid crystal display screen, an interferometer regulator display screen, or an electrowetting display screen.

[0064] Specifically, the displays used in this embodiment can switch images using relatively little power and continue to maintain the current image after a power outage, thereby achieving low-power image switching and zero-power image display.

[0065] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A protective case for a mobile terminal, characterized in that, include: The housing includes a receiving cavity and a base plate for accommodating a mobile terminal; The base plate is disposed at the bottom of the receiving cavity, and the base plate includes a first opening; The display screen is embedded in the first opening, and the thickness of the base plate is greater than or equal to the thickness of the display screen.

2. The mobile terminal protective case according to claim 1, characterized in that, It also includes a circuit board, the circuit board comprising: Sensing components, control circuit board, and first flexible circuit board; The base plate also includes a second opening communicating with the first opening, and the sensing component, control circuit board and first flexible circuit board are embedded in the second opening; The first flexible circuit board is stacked with the display screen. One end of the first flexible circuit board is fixedly connected to the control circuit board, and the other end is fixedly connected to the side of the display screen away from the control circuit board.

3. The mobile terminal protective case according to claim 2, characterized in that, The base plate also includes a third opening disposed on the side of the first opening away from the second opening, and the third opening communicates with the first opening; A second flexible circuit board is provided on the side of the display screen away from the control circuit board, and the second flexible circuit board is fixedly connected to the first flexible circuit board within the third opening.

4. The mobile terminal protective case according to claim 3, characterized in that, The base plate also includes a camera hole, and the second opening is located on the same side as the camera hole.

5. The mobile terminal protective case according to claim 2, characterized in that, Also includes: The base plate, on the side away from the receiving cavity, also includes a groove surrounding the first opening, and the bracket or magnetic ring is disposed within the groove.

6. The mobile terminal protective case according to claim 5, characterized in that, The bracket or magnetic ring includes a light-transmitting area, the area of ​​which is less than or equal to the area of ​​the display area of ​​the screen.

7. The mobile terminal protective case according to claim 5, characterized in that, It also includes a cover plate, which has a through hole that allows the bracket or magnetic ring to pass through, the area of ​​which is smaller than the area of ​​the first opening.

8. The mobile terminal protective case according to claim 5, characterized in that, The bracket includes a support part, a rotating part, and a fixing part, and the support part is connected to the rotating part via a rotating shaft; The fixing part is sleeved around the rotating part, and the rotating part and the fixing part can rotate relative to each other in the same plane.

9. The mobile terminal protective case according to claim 8, characterized in that, Both the supporting part and the rotating part are opaque annular plates. The fixing part includes a transparent circular plate, a side plate surrounding the transparent circular plate, and a limiting plate. The limiting plate is located on the side plate away from the transparent circular plate. The inner ring area of ​​the support part and the rotating part is equal to the light-transmitting area of ​​the bracket.

10. The mobile terminal protective case according to claim 1, characterized in that, It also includes a graphene heat sink, which is disposed on the bottom plate near the receiving cavity; The base plate and the shell are integrally formed or bonded together.

11. The mobile terminal protective case according to claim 1, characterized in that, The display screen includes an electrophoretic display screen, an electronic powder fluid display screen, a cholesterol liquid crystal display screen, a bistable nematic liquid crystal display screen, an interferometer regulator display screen, or an electrowetting display screen.

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