Rotating display device

Abstract

The present application provides a rotating display device, which belongs to the field of display technology. The stationary part of the rotating display device includes an electric signal transmitting circuit, and the rotating part includes an electric signal receiving circuit. Since the electric signal transmitting circuit transmits electric energy to the electric signal receiving circuit by means of magnetic coupling resonance, so that the electric signal receiving circuit powers the display module based on the electric energy, it can be determined that there is no contact between the two circuits that power the display module. In this way, there is no problem of poor contact, the stability of power supply to the display module is better, and thus, the working stability of the rotating display device will be better.

Description

Technical Field

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

[0002] The rotating display device is a new type of stereoscopic display device, whose display module can rotate at high speed driven by a motor. The display module can rotate to different positions to display different parts of a three-dimensional entity. In this way, the principle of visual persistence can be used to achieve a naked-eye 3D stereoscopic display effect.

[0003] In the related art, in order to control the normal operation of the rotating display device, a conductive slip ring can be used as a power supply circuit to power the rotating display device. However, the power supply stability in this manner is poor, and thus the working stability of the rotating display device is poor. Summary of the invention

[0004] The present application provides a rotating display device, which can solve the problem of poor working stability of the rotating display device in the related art. The technical solution is as follows:

[0005] In one aspect, a rotating display device is provided, the rotating display device comprising: a rotating portion and a stationary portion, the rotating portion being capable of rotating relative to the stationary portion;

[0006] The stationary part includes: an electrical signal transmitting circuit;

[0007] The rotating part includes: a display module and an electrical signal receiving circuit connected to the display module;

[0008] The electrical signal transmitting circuit is used to transmit electrical energy to the electrical signal receiving circuit by means of magnetic coupling resonance; and the electrical signal receiving circuit is used to supply power to the display module based on the electrical energy.

[0009] Optionally, the electrical signal transmitting circuit includes: a first electrical signal conversion subcircuit and a transmitting coil;

[0010] The input end of the first electrical signal conversion subcircuit is used to be connected to the power supply end, the output end of the first electrical signal conversion subcircuit is connected to the transmitting coil, and the first electrical signal conversion subcircuit is used to convert the power signal provided by the power supply end into a high-frequency alternating current signal, and transmit the high-frequency alternating current signal to the transmitting coil;

[0011] The transmitting coil is used to transmit the electric energy to the electric signal receiving circuit under the drive of the high-frequency alternating current signal.

[0012] Optionally, the first electrical signal conversion subcircuit includes: a first conversion module and a second conversion module;

[0013] The input end of the first conversion module is used to be connected to the power end, the output end of the first conversion module is connected to the input end of the second conversion module, and the first conversion module is used to convert the power signal into an initial DC signal and transmit the initial DC signal to the second conversion module;

[0014] The output end of the second conversion module is connected to the transmitting coil, and the second conversion module is used to convert the initial DC signal into the high-frequency AC signal, and transmit the high-frequency AC signal to the transmitting coil.

[0015] Optionally, the first conversion module is a direct current (DC)-DC power converter; and the second conversion module is a high-frequency inverter.

[0016] Optionally, the electrical signal receiving circuit includes: a receiving coil and a second electrical signal conversion subcircuit, the receiving coil is arranged opposite to the transmitting coil and the distance between them is less than a distance threshold;

[0017] The receiving coil is connected to an input end of the second electrical signal conversion subcircuit, and the receiving coil is used to transmit a driving AC signal to the second electrical signal conversion subcircuit based on the electrical energy;

[0018] The output end of the second electrical signal conversion subcircuit is connected to the display module, and the second electrical signal conversion subcircuit is used to convert the driving AC signal into a target DC signal adapted to the display module, and transmit the target DC signal to the display module.

[0019] Optionally, the second electrical signal conversion subcircuit includes: a third conversion module and a fourth conversion module;

[0020] The input end of the third conversion module is connected to the receiving coil, the output end of the third conversion module is connected to the input end of the fourth conversion module, and the third conversion module is used to convert the driving AC signal into an alternative DC signal, and transmit the alternative DC signal to the fourth conversion module;

[0021] The output end of the fourth conversion module is connected to the display module. The fourth conversion module is used to convert the alternative DC signal into the target DC signal and transmit the target DC signal to the display module. The voltage of the target DC signal is lower than the voltage of the alternative DC signal.

[0022] Optionally, the third conversion module is a rectifier circuit; and the fourth conversion module is a DC-DC power converter.

[0023] Optionally, the electrical signal receiving circuit further includes: an electrical signal processing subcircuit;

[0024] The input end of the electrical signal processing subcircuit is connected to the output end of the second electrical signal conversion subcircuit, and the output end of the electrical signal processing subcircuit is connected to the display module. The electrical signal processing subcircuit is used to process the target DC signal and transmit the processed target DC signal to the display module; wherein the processing includes at least one of voltage stabilization and filtering.

[0025] Optionally, the electrical signal processing subcircuit is a voltage stabilization and filtering circuit, and the processing includes voltage stabilization and filtering.

[0026] Optionally, the electrical signal receiving circuit further includes: a soft start subcircuit;

[0027] The input end of the soft start subcircuit is connected to the output end of the second electrical signal conversion subcircuit, and the output end of the soft start subcircuit is connected to the display module. The soft start subcircuit is used to control the surge current generated when the target DC signal is transmitted to the display module to be within the target current range.

[0028] Optionally, the soft start subcircuit includes: a switch control module and a switch module;

[0029] The input end of the switch control module is connected to the output end of the second electrical signal conversion sub-circuit, the control end of the switch control module is connected to the switch module, and the switch control module is used to transmit a drive signal to the switch module based on the target DC signal;

[0030] The switch module is also connected to the display module, and is used for transmitting the target direct current signal to the display module in response to the driving signal.

[0031] Optionally, the stationary part further includes: a base, and the electrical signal transmitting circuit is located in the base.

[0032] Optionally, the display module includes: a plurality of micro organic light emitting diodes.

[0033] Optionally, the rotating display device is a three-dimensional display device.

[0034] The beneficial effects brought by the technical solution provided by this application may at least include:

[0035] The embodiment of the present application provides a rotating display device. The stationary part of the rotating display device includes an electric signal transmitting circuit, and the rotating part includes an electric signal receiving circuit. Since the electric signal transmitting circuit transmits electric energy to the electric signal receiving circuit by means of magnetic coupling resonance, so that the electric signal receiving circuit powers the display module based on the electric energy, it can be determined that there is no contact between the two circuits that power the display module. In this way, there is no problem of poor contact, the stability of power supply to the display module is better, and thus, the working stability of the rotating display device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 is a structural schematic diagram of a rotating display device provided in an embodiment of the present application;

[0038] Figure 2 is a structural schematic diagram of another rotating display device provided in an embodiment of the present application;

[0039] Figure 3 is a structural schematic diagram of another rotating display device provided in an embodiment of the present application;

[0040] Figure 4 is a structural schematic diagram of another rotating display device provided in an embodiment of the present application;

[0041] Figure 5 is a structural schematic diagram of another rotating display device provided in an embodiment of the present application;

[0042] Figure 6 is a structural schematic diagram of another rotating display device provided in an embodiment of the present application;

[0043] Figure 7 is a structural schematic diagram of another rotating display device provided in an embodiment of the present application;

[0044] Figure 8 This is a schematic diagram of a surge current provided in an embodiment of the present application;

[0045] Fig. 9 It is a structural schematic diagram of another rotating display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0047] Figure 1 is a schematic diagram of the structure of a rotating display device provided in an embodiment of the present application. Figure 1 As shown, the rotating display device may include: a rotating part A1 and a stationary part A2.

[0048] The rotating part A1 can rotate relative to the stationary part A2. In other words, the stationary part A2 can be stationary relative to the rotating part A1. In order to ensure normal display, the display module used for display in the rotating display device generally needs to be arranged in the rotating part A1. Figure 1 The rotating part A1 may include a display module 00. In addition, a power supply circuit for supplying power to the rotating display device is also required.

[0049] It should be noted that because rotating display devices need to process a large amount of data, have a high refresh rate (can reach thousands to tens of thousands of hertz), complex control, high power consumption, and are more sensitive to power supply voltage, rotating display devices also have high requirements for power supply circuits and power supply methods, and generally require wireless power supply.

[0050] The related art proposes a power supply method: a brush is set in the stationary part A2, and a conductive ring connected to the display module 00 is set in the rotating part A1. The contact between the brush and the conductive ring can generate an electrical signal, and the electrical signal can be further provided to the display module 00 to realize the power supply of the display module 00. However, this method has problems such as poor contact and wear due to long-term use. In this way, the power supply stability will be poor, and accordingly, the working stability of the rotating display device will be poor. In addition, the later maintenance cost of the brushes and conductive rings used in this power supply method is also high.

[0051] In order to ensure the working stability of the rotating display device, the embodiment of the present application abandons the power supply method of the above related technologies and proposes a contactless power supply method using magnetic coupling resonance power supply. To implement this power supply method, it is necessary to set a power supply circuit that can implement this power supply method in the rotating display device:

[0052] Optional, combined Figure 2 It can be seen from the another rotating display device shown that the stationary part A2 of the rotating display device described in the embodiment of the present application may include: an electric signal transmitting circuit 10 . The rotating part A1 may include: an electric signal receiving circuit 20 connected to the display module 00 .

[0053] The electric signal transmitting circuit 10 can be used to transmit electric energy to the electric signal receiving circuit 20 by means of magnetic coupling resonance, and the electric signal receiving circuit 20 can be used to power the display module 00 based on the received electric energy. That is, the electric signal transmitting circuit 10 and the electric signal receiving circuit 20 together constitute the power supply circuit of the rotating display device. Moreover, since the electric signal transmitting circuit 10 belongs to the stationary part A2, the electric signal transmitting circuit 10 can also be called the stationary part of the power supply circuit. Since the electric signal receiving circuit 20 belongs to the rotating part A1, the electric signal receiving circuit 20 can also be called the rotating part of the power supply circuit.

[0054] Among them, transmitting electric energy by means of magnetic coupling resonance means: using the principle of electromagnetic coupling and coil resonance induction to transfer electric energy without contact. In this way, there is no problem of poor contact during power supply, and the power supply stability is better. In addition, the subsequent maintenance cost of the power supply circuit that implements this power supply method is also low, and it also enriches the application scenarios of magnetic coupling resonance wireless power supply.

[0055] In summary, the embodiment of the present application provides a rotating display device, the stationary part of which includes an electric signal transmitting circuit, and the rotating part includes an electric signal receiving circuit. Since the electric signal transmitting circuit transmits electric energy to the electric signal receiving circuit by means of magnetic coupling resonance, so that the electric signal receiving circuit powers the display module based on the electric energy, it can be determined that there is no contact between the two circuits that power the display module. In this way, there is no problem of poor contact, the stability of power supply to the display module is better, and thus, the working stability of the rotating display device will be better.

[0056] Optionally, the electric signal transmitting circuit 10 and the electric signal receiving circuit 20 interact with each other through magnetic coupling resonance. Figure 3 It can be seen from the illustrated rotating display device that the electric signal transmitting circuit 10 in the power supply circuit 01 described in the present application may include: a first electric signal conversion subcircuit 101 and a transmitting coil 102. The electric signal receiving circuit 20 may include: a receiving coil 201 and a second electric signal conversion subcircuit 202.

[0057] Furthermore, the receiving coil 201 and the transmitting coil 102 are arranged opposite to each other and the distance between them is less than the distance threshold. By setting the distance less than the distance threshold, the interference of other media (such as air) on the electric energy when it is transmitted between the two coils can be reduced, thereby ensuring the reliable and effective transmission of the electric energy. It can also be determined that the resonance in the magnetic coupling resonance recorded above refers to the coil resonance between the radiating coil 102 and the receiving coil 201. It can also be determined that there is no contact between the electric signal transmitting circuit 10 and the electric signal receiving circuit 20.

[0058] The input end of the first electric signal conversion subcircuit 101 can be used to connect to the power supply end (not shown in the figure), and the output end of the first electric signal conversion subcircuit 101 can be connected to the transmitting coil 102. The first electric signal conversion subcircuit 101 can be used to convert the power signal provided by the power supply end into a high-frequency alternating current signal, and transmit the high-frequency alternating current signal to the transmitting coil 102.

[0059] Optionally, the power signal provided by the power supply end may be a direct circuit (DC) power signal. Since the transmitting coil 102 generally needs to respond to a high-frequency alternating current signal to transmit electric energy normally, the first electric signal conversion subcircuit 101 is provided to convert the power signal provided by the power supply end into a high-frequency alternating current signal before transmitting it to the transmitting coil 102, thereby ensuring that the transmitting coil 102 works reliably.

[0060] The transmitting coil 102 can be used to transmit electric energy to the electric signal receiving circuit 20 under the drive of the received high-frequency alternating current signal. That is, the transmitting coil 102 can transmit energy outward. And because the receiving coil 201 and the transmitting coil 102 are arranged opposite to each other, energy is also transmitted to the receiving coil 201.

[0061] The receiving coil 201 can be connected to the input end of the second electric signal conversion sub-circuit 202. The receiving coil 201 can be used to transmit a driving AC signal to the second electric signal conversion sub-circuit 202 based on the received electric energy. That is, the receiving coil 201 can generate a driving AC signal based on the received electric energy induction, and then transmit the generated driving AC signal to the connected second electric signal conversion sub-circuit 202.

[0062] Optionally, the embodiment of the present application does not limit the number of turns of the transmitting coil 102 and the receiving coil 201 .

[0063] The output end of the second electric signal conversion subcircuit 202 can be connected to the display module 00. The second electric signal conversion subcircuit 202 can be used to convert the driving AC signal into a target DC signal adapted to the display module 00, and transmit the target DC signal to the display module 00.

[0064] Optionally, the target DC signal adapted to the display module 00 may refer to a target DC signal of a potential level required by the display module 00. The display module 00 may operate reliably in response to the received target DC signal, for example, the display module 00 rotates under the drive of the target DC signal to display normally.

[0065] As described in the above embodiment, since the display module generally needs to respond to a DC signal to work, and the electrical signals generated based on the electrical energy directly transmitted from the coil (including the transmitting coil 102 and the receiving coil 201) are generally AC signals, the second electrical signal conversion sub-circuit 202 is set to convert the driving AC signal into a target DC signal adapted to the display module 00, thereby ensuring that the display module 00 can work reliably.

[0066] Optional, Figure 4 is a schematic diagram of the structure of another rotating display device provided in an embodiment of the present application. Figure 4 As shown, the first electrical signal conversion sub-circuit 101 may include: a first conversion module 1011 and a second conversion module 1012 .

[0067] The input end of the first conversion module 1011 can be used to connect to the power supply end, and the output end of the first conversion module 1011 can be connected to the input end of the second conversion module 1012. The first conversion module 1011 can be used to convert the power supply signal into an initial DC signal, and transmit the initial DC signal to the second conversion module 1012.

[0068] Optionally, the first conversion module 1011 can be a direct current DC-DC power converter. Based on the working principle of the DC-DC power converter, it can be known that the signal after conversion by the DC-DC power converter is of better quality and more stable than the signal before conversion. In this way, it can be determined that the initial DC signal is of better quality and more stable than the power signal. Furthermore, compared with directly transmitting the power signal to the second conversion module 1012, by setting the first conversion module 1011 to convert the power signal into a better quality and more stable electrical signal and then transmitting it to the second conversion module 1012, the working reliability and stability of the second conversion module 1012 can be ensured, and the stability of subsequent operations such as power transmission can be ensured.

[0069] The output end of the second conversion module 1012 may be connected to the transmitting coil 102 . The second conversion module 1012 may be used to convert the received initial direct current signal into a high-frequency alternating current signal, and transmit the high-frequency alternating current signal to the transmitting coil 102 .

[0070] Combining the working principles of the first conversion module 1011 and the second conversion module 1012, it can be seen that the first electrical signal conversion sub-circuit 101 recorded in the embodiment of the present application can first convert the power signal provided by the power supply end into an initial DC signal with better quality and more stability, and then further convert the initial DC signal into a high-frequency AC signal required for the operation of the transmitting coil 102 and transmit it to the transmitting coil 102.

[0071] Optionally, the second conversion module 1012 may be a high-frequency inverter. A high-frequency inverter is a circuit that can convert low-voltage direct current into high-frequency low-voltage alternating current (AC) through high-frequency DC / alternating current (AC) conversion technology.

[0072] Continue to refer to Figure 4 , the second electrical signal conversion sub-circuit 202 may include: a third conversion module 2021 and a fourth conversion module 2022 .

[0073] The input end of the third conversion module 2021 can be connected to the receiving coil 201, and the output end of the third conversion module 2021 can be connected to the input end of the fourth conversion module 2022. The third conversion module 2021 can be used to convert the driving AC signal into an alternative DC signal, and transmit the alternative DC signal to the fourth conversion module 2022.

[0074] Optionally, the third conversion module 2021 may be a rectifier circuit capable of converting alternating current into direct current.

[0075] The output end of the fourth conversion module 2022 can be connected to the display module 00. The fourth conversion module 2022 can be used to convert the candidate DC signal into a target DC signal, and transmit the target DC signal to the display module 00.

[0076] Optionally, the voltage of the target DC signal may be lower than the voltage of the candidate DC signal. The fourth conversion module 2022 may be a DC-DC power converter.

[0077] Based on the above introduction to the DC-DC power converter, it can be seen that, compared with directly transmitting the candidate DC power signal to the display module 00, by further providing the fourth conversion module 2022 to convert the candidate DC power signal into the target DC power signal before transmitting it to the display module 00, the stability and reliability of power supply to the display module 00 can be further ensured. In addition, the working stability and reliability of the display module 00 can be further ensured.

[0078] Optional, Figure 5 is a schematic diagram of the structure of another rotating display device provided in an embodiment of the present application. Figure 5 As shown, the electrical signal receiving circuit 20 may further include: an electrical signal processing subcircuit 203 .

[0079] The input end of the electric signal processing subcircuit 203 can be connected to the output end of the second electric signal conversion subcircuit 202, and the output end of the electric signal processing subcircuit 203 can be connected to the display module 00. The electric signal processing subcircuit 203 can be used to process the target DC signal and transmit the processed target DC signal to the display module 00. The processing preferably includes at least one of voltage stabilization and filtering.

[0080] For example, the input end of the electric signal processing subcircuit 203 can be connected to the output end of the fourth conversion module 2022 in the second electric signal conversion subcircuit 202. The electric signal processing subcircuit 203 can be a voltage stabilization and filtering circuit, and accordingly, the processing of the target DC signal by the electric signal processing subcircuit 203 can include: voltage stabilization and filtering.

[0081] Among them, the voltage stabilization and filtering processing can filter out the low-frequency and high-frequency noise of the target DC signal, reduce the fluctuation of the target DC signal, so that the target DC signal received by the final display module 00 has smaller ripple, better quality, and higher stability.

[0082] Optional, Figure 6 is a schematic diagram of the structure of another rotating display device provided in an embodiment of the present application. Figure 6 As shown, the electrical signal receiving circuit 20 may further include: a soft start subcircuit 204 .

[0083] The input end of the soft start subcircuit 204 can be connected to the output end of the second electrical signal conversion subcircuit 202, and the output end of the soft start subcircuit 204 can be connected to the display module 00. The soft start subcircuit 204 can be used to control the surge current generated when the target DC signal is transmitted to the display module 00 to be within the target current range. Optionally, the target current range can refer to: the output capacity range of the power supply circuit 01. Therefore, that is, the soft start subcircuit 204 can be used to control the surge current generated when the target DC signal is transmitted to the display module 00 to be within the output capacity range of the power supply circuit 01.

[0084] For example, refer to Figure 7 It can be seen from the structural diagram of another rotating display device that the soft start subcircuit 204 may include: a switch control module 2041 and a switch module 2042 .

[0085] The input end of the switch control module 2041 can be connected to the output end of the second electrical signal conversion sub-circuit 202 , the control end of the switch control module 2041 can be connected to the switch module 2042 , and the switch module 2042 can also be connected to the display module 00 .

[0086] Among them, the switch control module 2041 can be used to transmit a driving signal to the switch module 2042 based on the target DC signal, and the switch module 2042 can be used to transmit the target DC signal to the display module 00 in response to the received driving signal. The display module 00 can be slowly lit at a certain rate based on the target DC signal. In this way, the surge current generated at the moment of startup can be effectively reduced, so that the surge current is maintained within the output capacity range of the power supply circuit 01, and the power supply stability of the power supply circuit is further improved.

[0087] For example, Figure 8 The schematic diagram of the surge current generated when the soft start subcircuit 204 is not set and when the soft start subcircuit 204 is set is shown. The horizontal axis refers to time, and the unit may be milliseconds (ms); the vertical axis refers to surge current, and the unit may be amperes (A).

[0088] refer to Figure 8 It can be seen that after the soft start subcircuit 204 is set, the maximum peak value of the surge current is about 0.01A, while without the soft start subcircuit 204, the maximum peak value of the surge current reaches about 0.02A. Moreover, after the soft start subcircuit 204 is set, the surge current reaches the peak value in about 0.025 seconds, while without the soft start subcircuit 204, the surge current reaches the peak value in about 0.012 seconds. It can be further determined that the soft start subcircuit 204 can effectively reduce the surge current and further improve the power supply stability.

[0089] It should be noted that, combined with Figure 6 and Figure 7 , the input end of the soft start sub-circuit 204 can be directly connected to the output end of the second electric signal conversion sub-circuit 202. That is, the electric signal receiving circuit 20 does not include the electric signal processing sub-circuit 203. Or, in combination Figure 5 and Fig. 9 The electric signal receiving circuit 20 may further include an electric signal processing subcircuit 203, and accordingly, the input end of the soft start subcircuit 204 may be directly connected to the output end of the electric signal processing subcircuit 203. That is, the soft start subcircuit 204 may be indirectly connected to the output end of the second electric signal conversion subcircuit 202 through the electric signal processing subcircuit 203.

[0090] Optional, reference Fig. 9 It can also be seen that the first conversion module 1011 (ie, the first electrical signal conversion sub-circuit 101) can be connected to the power supply terminal via the power supply interface DCIN. Fig. 9 In the rotating display device shown, the first conversion module 1011 and the fourth conversion module 2022 are DC-DC power converters, the second conversion module 1012 is a high-frequency inverter, the third conversion module 2021 is a rectifier circuit, and the electrical signal processing subcircuit 203 is a voltage stabilizing filter circuit.

[0091] Optional, combined Figure 1 It can be seen that the stationary part A2 of the rotating display device may further include: a base Z1 , and the electric signal transmitting circuit 10 may be located in the base Z1 .

[0092] Optionally, the display module 00 may include: a plurality of mini organic light emitting diodes (mini LED), that is, the rotating display device may be a mini LED display device. Of course, the display module 00 may include a plurality of organic light emitting diodes (OLED), that is, the rotating linear display device may be an OLED display device. The embodiment of the present application does not limit the type of light emitting element included in the display module in the display device.

[0093] Optionally, the rotating display device may be a three-dimensional (3D) display device. Of course, the rotating display device may also be a 2D display device, which is not limited in the embodiments of the present application.

[0094] The electric signal transmitting circuit 10 recorded in the above embodiment can be called a wireless power transmitting module, and the electric signal receiving circuit 20 can be called a wireless power receiving module. The entire power supply principle of the embodiment of the present application is: the wireless power transmitting module transmits electric energy to the wireless power receiving module through magnetic coupling resonance based on the power signal input from the external power supply end, and then the wireless power receiving module supplies power to the connected display module 00 based on the received electric energy. Compared with the traditional solution, this power supply method has better stability, and the ripple of the electric signal received by the display module 00 is smaller, which can fully meet the power demand of the rotating display device.

[0095] In summary, the embodiment of the present application provides a rotating display device, the stationary part of which includes an electric signal transmitting circuit, and the rotating part includes an electric signal receiving circuit. Since the electric signal transmitting circuit transmits electric energy to the electric signal receiving circuit by means of magnetic coupling resonance, so that the electric signal receiving circuit powers the display module based on the electric energy, it can be determined that there is no contact between the two circuits that power the display module. In this way, there is no problem of poor contact, the stability of power supply to the display module is better, and thus, the working stability of the rotating display device will be better.

[0096] In the embodiments of the present application, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0097] The term "plurality" in the embodiments of the present application means two or more.

[0098] In the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist at the same time, and B exists alone.

[0099] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating display device, characterized in that: The rotating display device comprises: a rotating part and a stationary part, wherein the rotating part can rotate relative to the stationary part; The stationary part includes: an electrical signal transmitting circuit; The rotating part includes: a display module and an electrical signal receiving circuit connected to the display module; The electric signal transmitting circuit is used to transmit electric energy to the electric signal receiving circuit by means of magnetic coupling resonance; the electric signal receiving circuit is used to power the display module based on the electric energy; and the electric signal transmitting circuit includes: a first electric signal conversion subcircuit and a transmitting coil; the electric signal receiving circuit includes: a receiving coil, a second electric signal conversion subcircuit, an electric signal processing subcircuit and a soft start subcircuit, and the receiving coil is arranged opposite to the transmitting coil and the distance between them is less than the distance threshold; The input end of the first electrical signal conversion subcircuit is used to be connected to the power supply end, the output end of the first electrical signal conversion subcircuit is connected to the transmitting coil, and the first electrical signal conversion subcircuit is used to convert the power signal provided by the power supply end into a high-frequency alternating current signal, and transmit the high-frequency alternating current signal to the transmitting coil; The transmitting coil is used to transmit the electric energy to the electric signal receiving circuit under the drive of the high-frequency alternating current signal; The receiving coil is connected to an input end of the second electrical signal conversion subcircuit, and the receiving coil is used to transmit a driving AC signal to the second electrical signal conversion subcircuit based on the electrical energy; The output end of the second electric signal conversion subcircuit is connected to the input end of the electric signal processing subcircuit, the output end of the electric signal processing subcircuit is connected to the input end of the soft start subcircuit, the output end of the soft start subcircuit is connected to the display module, the second electric signal conversion subcircuit is used to convert the driving AC signal into a target DC signal adapted to the display module; the electric signal processing subcircuit is used to process the target DC signal, wherein the processing includes at least one of voltage stabilization and filtering; the soft start subcircuit is used to control the processed target DC signal to be transmitted to the display module, and is used to control the surge current generated when the processed target DC signal is transmitted to the display module to be within a target current range, and the target current range refers to the output capacity range of the power supply circuit including the electric signal transmitting circuit and the electric signal receiving circuit; Furthermore, the soft start subcircuit includes: a switch control module and a switch module; The input end of the switch control module is connected to the output end of the electrical signal processing sub-circuit, the control end of the switch control module is connected to the switch module, and the switch control module is used to transmit a driving signal to the switch module based on the processed target DC signal; The switch module is also connected to the display module, and is used for transmitting the processed target direct current signal to the display module in response to the driving signal.

2. The rotating display device according to claim 1, characterized in that: The first electrical signal conversion subcircuit comprises: a first conversion module and a second conversion module; The input end of the first conversion module is used to be connected to the power end, the output end of the first conversion module is connected to the input end of the second conversion module, and the first conversion module is used to convert the power signal into an initial DC signal and transmit the initial DC signal to the second conversion module; The output end of the second conversion module is connected to the transmitting coil, and the second conversion module is used to convert the initial DC signal into the high-frequency AC signal, and transmit the high-frequency AC signal to the transmitting coil.

3. The rotating display device according to claim 2, characterized in that: The first conversion module is a direct current (DC)-DC power converter; the second conversion module is a high-frequency inverter.

4. The rotating display device according to any one of claims 1 to 3, characterized in that: The second electrical signal conversion subcircuit includes: a third conversion module and a fourth conversion module; The input end of the third conversion module is connected to the receiving coil, the output end of the third conversion module is connected to the input end of the fourth conversion module, and the third conversion module is used to convert the driving AC signal into an alternative DC signal, and transmit the alternative DC signal to the fourth conversion module; The output end of the fourth conversion module is connected to the display module through the electrical signal processing sub-circuit and the soft start sub-circuit connected in sequence. The fourth conversion module is used to convert the alternative DC signal into the target DC signal, and transmit the target DC signal to the display module through the electrical signal processing sub-circuit and the soft start sub-circuit connected in sequence. The voltage of the target DC signal is lower than the voltage of the alternative DC signal.

5. The rotating display device according to claim 4, characterized in that: The third conversion module is a rectifier circuit; the fourth conversion module is a DC-DC power converter.

6. The rotating display device according to any one of claims 1 to 3, characterized in that: The electrical signal processing subcircuit is a voltage stabilizing and filtering circuit, and the processing includes voltage stabilization and filtering.

7. The rotating display device according to any one of claims 1 to 3, characterized in that: The stationary part further includes a base, and the electric signal transmitting circuit is located in the base.

8. The rotating display device according to any one of claims 1 to 3, characterized in that: The display module includes: a plurality of micro organic light emitting diodes.

9. The rotating display device according to any one of claims 1 to 3, characterized in that: The rotating display device is a three-dimensional display device.

10. The rotating display device according to claim 5, characterized in that: The electrical signal processing subcircuit is a voltage stabilizing and filtering circuit, and the processing includes voltage stabilization and filtering; The stationary part further comprises: a base, and the electric signal transmitting circuit is located inside the base; the display module comprises: a plurality of micro organic light emitting diodes; and the rotating display device is a three-dimensional display device.

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