Power supply device and terminal
By setting up a power switching circuit at the output end of the power supply circuit, multiple screens share a power supply circuit, solving the problem of high space cost of power supply circuits in the prior art, reducing hardware costs and terminal thickness, and improving the battery life of the screen.
Patent Information
- Application Number
- CN202311862352.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-07-01
AI Technical Summary
The space required for power supply circuits used to power the screen in the prior art is high, resulting in an increase in the thickness of the folding screen phone and a shortened battery life time.
By setting a power switching circuit at the output end of the power supply circuit, the output channel of the power supply circuit is divided into independent channels of multiple screens, so that multiple screens can use one power supply circuit together.
It reduces the number and area of power supply circuits, reduces hardware cost and terminal thickness, and improves the battery life of the screen.
Smart Images
Figure CN120237744A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power supply technologies, and in particular, to a power supply device and a terminal. Background Art
[0002] With the continuous development of the form of mobile phones, the folding screen mobile phones have received increasing attention. The inner folding dual-screen mobile phones are deeply loved by consumers due to their practicability, durability, and reasonable architecture. To improve the display specifications of folding screen mobile phones, the voltage and current required by the screen are getting higher and higher, the battery is getting larger, and the whole machine is getting thinner. The occupied space of the power supply circuit coupled between the battery and the screen has become a bottleneck. Currently, the space cost required for the power supply circuit used to supply power to the screen is relatively large. Summary of the Invention
[0003] This application provides a power supply device and a terminal, which solve the problem that the space cost required for the power supply circuit used to supply power to the screen in the prior art is relatively large.
[0004] To achieve the above object, this application adopts the following technical solutions:
[0005] In a first aspect, a power supply device is provided. The power supply device is applied to a terminal. The terminal includes a first screen and a second screen. The power supply device includes a power supply circuit and a power supply switching circuit. The input end of the power supply switching circuit is coupled to the output end of the power supply circuit. The first output end of the power supply switching circuit is used to be coupled to the first screen, and the second output end of the power supply switching circuit is used to be coupled to the second screen. The power supply circuit is configured to send a first electrical signal through the input end and the first output end of the power supply switching circuit, or is configured to send a second electrical signal through the input end and the second output end of the power supply switching circuit. The first electrical signal is used to supply power to the first screen, and the second electrical signal is used to supply power to the second screen.
[0006] In the above technical solution, by providing a power supply switching circuit at the output end of the power supply circuit, the output channels of the power supply circuit are divided into independent channels for multiple screens (such as the first screen and the second screen), so that multiple screens can share one power supply circuit. On the one hand, at least one power supply circuit is reduced, and one power supply switching circuit is added. The structure of the power supply switching circuit is relatively simple compared with the power supply circuit, and the overall hardware cost is reduced. On the other hand, the area occupied by the power supply circuit and the thickness of the terminal are reduced. On the other hand, the control resources occupied by the power supply circuit are reduced.
[0007] In a possible implementation of the first aspect, the first screen is a foldable screen. The power supply circuit is specifically configured to send a first electrical signal through the input terminal and the first output terminal of the power supply switching circuit when the terminal is in the first state. The first state is used to indicate that when the first screen is unfolded, the first screen is in the working state and the second screen is in the off state. In the above possible implementation, the first screen in the terminal can be a foldable screen. When the terminal is in the first state, the first screen is in the unfolded state and in the working state, and the power supply circuit is used to supply power to the first screen. In this way, the power supply circuit can be applied to a foldable screen terminal to meet the thin and light requirements of the foldable screen terminal. And in the first state, the second screen is powered off, which can meet the long battery life requirements of the foldable screen terminal.
[0008] In a possible implementation of the first aspect, the power supply device further includes a control circuit. The control circuit is configured to send a first power-off signal, and the first power-off signal is used to instruct the power supply circuit to stop sending the second electrical signal. The control circuit is further configured to send a first control signal after sending the first power-off signal. The first control signal is used to instruct that the input terminal and the first output terminal of the power supply switching circuit are conducted, and the input terminal and the second output terminal of the power supply switching circuit are disconnected. The control circuit is further configured to send a first power-on signal after sending the first control signal. The first power-on signal is used to instruct the power supply circuit to send the first electrical signal. In the above possible implementation, when the terminal switches from the second state to the first state, the power-on and power-off timing of the screen is controlled by the control circuit. First, the second screen to be turned off is powered off, then the input terminal of the power supply switching circuit is switched to be conducted with the first output terminal, and then the first screen is powered on. The power supply circuit can timely know which screen needs to output the electrical signal required by the screen at this time, avoiding switching the input terminal of the power supply switching circuit to be conducted with the first output terminal first, resulting in the power supply circuit outputting the second electrical signal to the first screen. In this way, the first electrical signal required by the first screen can be accurately provided, and the power-on and power-off sequence of the screen can be ensured.
[0009] In a possible implementation of the first aspect, the power supply device further includes a data switching circuit. The first end of the data switching circuit is used to couple to the first screen, the first end of the data switching circuit is coupled to the data end of the power supply circuit, and the second end of the data switching circuit is used to couple to the second screen. The second screen is configured to receive the first power-down signal and send the first power-down signal to the power supply circuit through the first end and the second end of the data switching circuit. The control circuit is specifically configured to send a first control signal to the power switching circuit. The control circuit is further configured to send a second control signal to the data switching circuit after sending the first power-down signal, and the second control signal is used to indicate that the first end and the second end of the data switching circuit are turned on and the first end and the third end of the data switching circuit are turned off. The control circuit is specifically configured to send a first power-up signal to the power supply circuit. In the above possible implementation, the first power-down signal, the first control signal, and the second control signal are all control signals. Since the number of control channels from the control circuit to the data switching circuit, from the control circuit to the power switching circuit, and from the data switching circuit to the power supply circuit are all reduced, the control resources occupied by the power supply can be reduced.
[0010] In a possible implementation of the first aspect, the data switching circuit and the power switching circuit are integrally arranged. In the above possible implementation, only one control channel needs to be set to couple the control circuit and the first integrated device (the first integrated device is the integrated device where the data switching circuit and the power switching circuit are located), and there is no need to set multiple control channels between the control circuit and the data switching circuit and between the control circuit and the power switching circuit, which can save control resources. Moreover, the occupied space of the data switching switch and the power switching switch is further reduced.
[0011] In a possible implementation of the first aspect, the power supply device further includes a detection circuit, and the detection circuit is coupled to the control circuit. The detection circuit is configured to send a first notification signal to the control circuit when detecting that the terminal switches to the first state, and the first notification signal is used to indicate the sending of the first power-down signal. In the above possible implementation, the detection circuit detects the user behavior (such as the opening and closing operation of the folding screen terminal when the terminal is a folding screen terminal), determines the state switching of the terminal between the first state and the second state, and the control circuit can timely control the power supply circuit to supply power to the corresponding screen according to the user behavior, providing a basis for accurately providing the corresponding screen with the required electrical signal.
[0012] In a possible implementation of the first aspect, the first screen is a foldable screen. The power supply circuit is specifically configured to send a second electrical signal through the input terminal and the second output terminal of the power switch circuit when the terminal is in the second state, and the second state is used to indicate that when the first screen is folded, the first screen is in the off state and the second screen is in the working state. In the above possible implementation, the first screen in the terminal can be a foldable screen. When the terminal is in the second state, the first screen is folded and the second screen is in the working state, and the power supply circuit is used to supply power to the second screen. In this way, the power supply circuit can be applied to a foldable screen terminal to meet the thin and light requirements of the foldable screen terminal. And in the second state, the first screen is powered off, which can meet the long battery life requirements of the foldable screen terminal.
[0013] In a possible implementation of the first aspect, the power supply device further includes a control circuit. The control circuit is configured to send a second power-off signal, and the second power-off signal is used to instruct the power supply circuit to stop sending the first electrical signal. The control circuit is further configured to send a third control signal after sending the second power-off signal, and the third control signal is used to instruct conduction between the input terminal and the second output terminal of the power switch circuit and disconnection between the input terminal and the first output terminal of the power switch circuit. The control circuit is further configured to send a second power-on signal after sending the second control signal, and the second power-on signal is used to instruct the power supply circuit to send the second electrical signal. In the above possible implementation, when the terminal switches from the first state to the second state, the control circuit controls the power-on and power-off timing of the screen, first powers off the first screen to be turned off, then switches the input terminal of the power switch circuit to conduct with the second output terminal, and then powers on the second screen. The power supply circuit can timely know which screen needs to output the electrical signal required by the screen at this time, avoiding switching the input terminal of the power switch circuit to conduct with the second output terminal first, resulting in the power supply circuit outputting the first electrical signal to the second screen. In this way, the second electrical signal required by the second screen can be accurately provided, and the power-on and power-off sequence of the screen can also be ensured.
[0014] In a possible implementation of the first aspect, the power supply device further includes a data switching circuit. The first end of the data switching circuit is coupled to the data end of the power supply circuit. The third end of the data switching circuit is used to couple to the first screen, and the third end of the data switching circuit is coupled to the data end of the power supply circuit. The first screen is configured to receive a second power-down signal and send the second power-down signal to the power supply circuit through the first end and the third end of the data switching circuit. The control circuit is specifically configured to send a third control signal to the power switch circuit. The control circuit is further configured to send a fourth control signal to the data switching circuit after sending the second power-down signal. The fourth control signal is used to indicate that the first end and the third end of the data switching circuit are turned on and the first end and the second end of the data switching circuit are turned off. The control circuit specifically sends a second power-up signal to the power supply circuit. In the above possible implementation, the second power-down signal, the third control signal, and the fourth control signal are all control signals. Since the number of control channels from the control circuit to the data switching circuit, from the control circuit to the power switch circuit, and from the data switching circuit to the power supply circuit are all reduced, the control resources occupied by the power supply can be reduced.
[0015] In a possible implementation of the first aspect, the data switching circuit and the power switch circuit are integrally arranged. In the above possible implementation, only one control channel needs to be set to couple the control circuit and the first integrated device (the first integrated device is the integrated device where the data switching circuit and the power switch circuit are located), and there is no need to set multiple control channels between the control circuit and the data switching circuit and between the control circuit and the power switch circuit, which can save control resources. Moreover, the occupied space of the data switching switch and the power switch is further reduced.
[0016] In a possible implementation of the first aspect, the power supply device further includes a detection circuit, and the detection circuit is coupled to the control circuit. The detection circuit is configured to send a second notification signal to the control circuit when it detects that the terminal switches to the second state. The second notification signal is used to indicate the sending of the second power-down signal. In the above possible implementation, the detection circuit detects the user behavior (such as the opening and closing operation of the folding screen terminal when the terminal is a folding screen terminal), determines the state switch of the terminal between the first state and the second state, and the control circuit can timely control the power supply circuit to supply power to the corresponding screen according to the user behavior, providing a basis for accurately providing the required electrical signal for the corresponding screen.
[0017] In a possible implementation of the first aspect, the power switching circuit and the power supply circuit are integrally arranged. In the above possible implementation, only one control channel needs to be set to couple the control circuit and the second integrated device (the second integrated device is the integrated device where the power switching circuit and the power supply circuit are located), and there is no need to set multiple control channels between the control circuit and the data switching circuit, and between the control circuit and the power switching circuit. Moreover, the lines between the power supply circuit and the data switching circuit, and between the power supply circuit and the power switching circuit can also be reduced, thus saving control resources. In addition, the occupied space of the power supply circuit and the power switch is further reduced.
[0018] In a possible implementation of the first aspect, the input end of the power supply circuit is used to be coupled with a battery or an interface, and the power supply circuit obtains a first electrical signal or a second electrical signal through the input end. In the above possible implementation, this power supply device can be applied to various terminals.
[0019] In the second aspect, a terminal is provided, which includes a power supply device, a first screen and a second screen, and the power supply device is the power supply device provided in the first aspect or any possible implementation of the first aspect.
[0020] In a possible implementation of the first aspect, the power supply device includes a power switching circuit, and the power switching circuit and the first screen are integrally arranged, or the power supply device and the second screen are integrally arranged. In the above possible implementation, since the control circuit is originally coupled to the first screen through a bus, there is no need to set multiple control channels between the control circuit and the data switching circuit, and between the control circuit and the power switching circuit, which can save control resources. In addition, the occupied space of the first screen, the power switching circuit and the data switching circuit is further reduced.
[0021] It can be understood that any of the above-provided terminals can be applied to the corresponding power supply device provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding power supply device provided above, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 A schematic diagram of the screen of a terminal provided by an embodiment of the present application;
[0023] Figure 2 A schematic structural diagram of a terminal provided by an embodiment of the present application;
[0024] Figure 3 A schematic structural diagram of a first terminal provided by an embodiment of the present application;
[0025] Figure 4 A schematic structural diagram of a second terminal provided by an embodiment of the present application Figure 1 ;
[0026] Figure 5 Schematic diagram of a first state provided by an embodiment of the present application;
[0027] Figure 6 Schematic diagram of a second state provided by an embodiment of the present application;
[0028] Figure 7 Structural schematic of a second terminal provided by an embodiment of the present application Figure 2 ;
[0029] Figure 8 Structural schematic of a third power supply device provided by an embodiment of the present application Figure 1 ;
[0030] Figure 9 Structural schematic of a third power supply device provided by an embodiment of the present application Figure 2 ;
[0031] Figure 10 Structural schematic of a second terminal provided by an embodiment of the present application Figure 3 ;
[0032] Figure 11 Structural schematic of a second terminal provided by an embodiment of the present application Figure 4 ;
[0033] Figure 12 Structural schematic of a second terminal provided by an embodiment of the present application Figure 5 ;
[0034] Figure 13 Structural schematic of a second terminal provided by an embodiment of the present application Figure 6 ;
[0035] Figure 14 Schematic diagram of a power supply method provided by an embodiment of the present application. Detailed implementation manners
[0036] In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple. Additionally, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish identical or similar items with basically the same functions and roles. For example, the first threshold and the second threshold are merely used to distinguish different thresholds and do not limit their order. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific manner.
[0037] First, the application scenarios related to the embodiments of the present application are introduced. The technical solutions provided by the embodiments of the present application can be applied to terminals with multiple display screens, such as computers, tablets, laptops, mobile phones, netbooks, wearable devices, vehicle-mounted devices, or camera devices, etc. In actual applications, the electronic device may also include one or more of multiple modules such as a communication module, a sensor module, and an input / output module. Exemplarily, as Figure 1 shown, the terminal can be a folding-screen mobile phone, which has two display screens, such as an inner screen and an outer screen. When the folding-screen mobile phone is in the unfolded state, the user can use the folding-screen mobile phone through the inner screen; when the folding-screen mobile phone is in the folded state, the user can use the folding-screen mobile phone through the outer screen.
[0038] The embodiments of the present application provide a terminal, such as Figure 2As shown, the terminal 1000 includes a battery 100, a power supply device 200, and a display device 300. Both the battery 100 and the display device 300 are coupled to the power supply device 200. The battery 100 is used to supply power to the power supply device 200, and the power supply device 200 is used to convert the electrical signal provided by the battery 100 into the electrical signal required by the display device 300 and output the electrical signal required by the display device 300 to the display device 300. Exemplarily, the display device 300 may be a screen, such as an active-matrix organic light emitting diode (AMOLED) screen.
[0039] In some possible implementation manners, the terminal 1000 includes a plurality of display devices 300 and a plurality of power supply devices 200. Each display device 300 is coupled to one power supply device 200, and each power supply device 200 is used to supply power to the display device 300 coupled thereto.
[0040] In some examples, the terminal 1000 may be the Figure 3 first terminal 1000A as shown. The first terminal 1000A includes a first battery 100A, a first power supply device 210A, a second power supply device 220A, a first display device 310A, and a second display device 320A. Both the first power supply device 210A and the second power supply device 220A are coupled to the first battery 100A. The first power supply device 210A is coupled to the first display device 310A, and the second power supply device 220A is coupled to the second display device 320A. When the first display device 310A is in a working state, the first battery 100A is used to supply power to the first power supply device 210A, and the first power supply device 210A is used to provide a first voltage to the first display device 310A. The first voltage is used to supply power to the first display device 310A. Exemplarily, the first display device 310A may require multiple voltages to complete different operations, and there may be multiple first voltages in practice for supplying power to the first display device 310A. When the second display device 320A is in a working state, the first battery 100A is used to supply power to the second power supply device 220A, and the second power supply device 220A is used to provide a second voltage to the second display device 320A. The second voltage is used to supply power to the second display device 320A. Exemplarily, the second display device 320A may require multiple voltages to complete different operations, and there may be multiple second voltages in practice for supplying power to the second display device 320A.
[0041] In this embodiment, when the number of display devices is the same as the number of power supply devices, the following problems may occur: First, since each display device may require multiple voltages, the circuit structure of the power supply device is relatively complex, and the hardware cost of setting up multiple power supply devices is relatively high. Second, the area of the power supply device is relatively large. Taking a folding screen mobile phone as an example, the area of each power supply device may reach 100 square millimeters, which not only occupies a large amount of the plane space of the whole machine, but also results in a relatively high thickness of the first terminal 1000A. Third, if the processor in the first terminal 1000A controls multiple power supply devices, multiple control channels are required, and the control resources occupied by the multiple power supply devices are relatively many.
[0042] In some possible embodiments, the terminal 1000 includes a plurality of display devices 300 and a power supply device 200. The plurality of display devices 300 are all coupled to the power supply device 200, and the power supply device 200 is configured to supply power to at least one of the plurality of display devices 300 coupled thereto.
[0043] In some examples, the terminal 1000 may be the Figure 4 second terminal 1000B as shown. The second terminal 1000B includes a second battery 100B, a third power supply device 200B, a first screen 310B, and a second screen 320B. The third power supply device 200B includes a power supply circuit 210B and a power switching circuit 410B. The input end 411 of the power switching circuit 410B is coupled to the output end 201 of the power supply circuit 210B. The first output end 412 of the power switching circuit 410B is configured to be coupled to the first screen 310B, and the second output end 413 of the power switching circuit 410B is configured to be coupled to the second screen 320B. The input end 202 of the power supply circuit 210B may be configured to be coupled to the second battery 100B. Exemplarily, the power supply circuit 210B may be a power management integrated circuit (PMIC). Exemplarily, the power supply circuit 210B is configured to send a first electrical signal through the input end 411 and the first output end 412 of the power switching circuit 410B, or to send a second electrical signal through the input end 411 and the second output end 413 of the power switching circuit 410B. The first electrical signal is configured to supply power to the first screen 310B, and the second electrical signal is configured to supply power to the second screen 320B. Exemplarily, the first electrical signal and the second electrical signal may be voltage signals, and the voltage value of the first electrical signal and the voltage value of the second electrical signal may be equal or unequal.
[0044] In this embodiment, by providing the power switching circuit 410B at the output end 201 of the power supply circuit 210B, the output channels of the power supply circuit 210B are divided into independent channels for multiple screens (such as the first screen 310B and the second screen 320B), so that multiple screens can share one power supply circuit 210B. Compared withFigure 3 Compared with the embodiments shown, on the one hand, at least one power supply circuit 210B is reduced, and a power supply switching circuit 410B is added. The structure of the power supply switching circuit 410B is relatively simple compared with that of the power supply circuit 210B, and the overall hardware cost is reduced. On the other hand, the area occupied by the power supply circuit 210B and the thickness of the second terminal 1000B are reduced. On the further hand, the control resources occupied by the power supply circuit 210B are reduced.
[0045] In some possible embodiments, the first screen 310B in the second terminal 1000B may be a folding screen. When the first screen 310B is unfolded, the first screen 310B can work and the second screen 320B can be turned off. At this time, the power supply circuit 210B is used to supply power to the first screen 310B and does not need to supply power to the second screen 320B.
[0046] In some examples, the power supply circuit 210B is specifically configured to send a first electrical signal through the input terminal 411 and the first output terminal 412 of the power supply switching circuit 410B when the second terminal 1000B is in a first state. The first state is used to indicate that when the first screen 310B is unfolded, the first screen 310B is in a working state and the second screen 320B is in a closed state. Exemplarily, as Figure 5 shown, on the left is the first screen 310B as the inner screen, and on the right is the second screen 320B as the outer screen, and the first screen 310B is unfolded. In the first state, the first screen 310B is in a working state, such as displaying a user interface; the second screen 320B is in a closed state. The power supply circuit 210B sends a first electrical signal through the input terminal 411 and the first output terminal 412 of the power supply switching circuit 410B to supply power to the first screen 310B so that the first screen 310B can work properly.
[0047] In this embodiment, the first screen 310B in the second terminal 1000B may be a folding screen. When the second terminal 1000B is in the first state, the first screen 310B is in an unfolded state and in a working state, and the power supply circuit 210B is used to supply power to the first screen 310B. In this way, the power supply circuit 210B can be applied to a folding screen terminal to meet the thin and light requirements of the folding screen terminal. And in the first state, the second screen 320B is powered off, which can meet the long battery life requirements of the folding screen terminal.
[0048] In some other possible embodiments, when the first screen 310B is folded, the first screen 310B can be turned off and the second screen 320B can work. At this time, the power supply circuit 210B is used to supply power to the second screen 320B and does not need to supply power to the first screen 310B.
[0049] In some examples, the power supply circuit 210B is specifically configured to send a second electrical signal through the input terminal 411 and the second output terminal 413 of the power switch circuit 410B when the second terminal 1000B is in the second state. The second state is used to indicate that when the first screen 310B is folded, the first screen 310B is in the off state and the second screen 320B is in the working state. Exemplarily, as Figure 6 shown, the second screen 320B is the outer screen and the first screen 310B is folded. In the second state, the second screen 320B is in the working state, such as displaying a user interface; the first screen 310B is in the off state. The power supply circuit 210B supplies power to the second screen 320B by sending a second electrical signal through the input terminal 411 and the second output terminal 413 of the power switch circuit 410B, so that the second screen 320B can work properly.
[0050] In this embodiment, the first screen 310B in the second terminal 1000B can be a folding screen. When the second terminal 1000B is in the second state, the first screen 310B is folded and the second screen 320B is in the working state. The power supply circuit 210B is used to supply power to the second screen 320B. In this way, the power supply circuit 210B can be applied to a folding screen terminal to meet the thin and light requirements of the folding screen terminal. And in the second state, the first screen 310B is powered off, which can meet the long battery life requirements of the folding screen terminal.
[0051] In some other possible embodiments, the second terminal 1000B may not be a folding screen terminal either, and neither the first screen 310B nor the second screen 320B has a folding function.
[0052] In some possible embodiments, the third power supply device 200B further includes a control circuit. When the second terminal 1000B switches from the second state to the first state, the control circuit is used to control the power switch circuit 410B and the power supply circuit 210B, so as to enable the power supply circuit 210B to supply power to the first screen 310B.
[0053] In some examples, the control circuit is used to send a first power-off signal, and the first power-off signal is used to instruct the power supply circuit 210B to stop sending the second electrical signal. The control circuit is further used to send a first control signal after sending the first power-off signal, and the first control signal is used to instruct that the input terminal 411 and the first output terminal 412 of the power switch circuit 410B are conducted and the input terminal 411 and the second output terminal 413 of the power switch circuit 410B are disconnected. The control circuit is further used to send a first power-on signal after sending the first control signal, and the first power-on signal is used to instruct the power supply circuit 210B to send a first electrical signal.
[0054] In this embodiment, when the second terminal 1000B switches from the second state to the first state, the control circuit controls the power-on and power-off timing of the screen. First, the second screen 320B to be turned off is powered off, then the input end 411 of the power supply switching circuit 410B is switched to conduct with the first output end 412, and then the first screen 310B is powered on. The power supply circuit 210B can timely know which screen needs to output the electrical signal required by the screen at this time, avoiding switching the input end 411 of the power supply switching circuit 410B to conduct with the first output end 412 first, resulting in the power supply circuit 210B outputting the second electrical signal for the first screen 310B. In this way, the first electrical signal required by the first screen 310B can be accurately provided, and the power-on and power-off sequence of the screen can be ensured.
[0055] In some examples, the third power supply device 200B further specifically includes a data switching circuit, and the data switching circuit is used to transmit signals between the power supply circuit 210B and the first screen 310B, or between the power supply circuit 210B and the second screen 320B. For example, the above-mentioned first power-on signal and first power-off signal can be transmitted through the data switching circuit.
[0056] Exemplarily, as Figure 7 shown, the first end 421 of the data switching circuit 420B is coupled to the data end 203 of the power supply circuit 210B. The second end 422 of the data switching circuit 420B is used to couple to the second screen 320B, and the third end 423 of the data switching circuit 420B is used to couple to the first screen 310B. The control circuit 500B is coupled to the control end (not shown in the figure) of the power supply switching circuit 410B, the control end (not shown in the figure) of the data switching circuit 420B, the power supply circuit 210B, the first screen 310B, and the second screen 320B. Exemplarily, between the first end 421 of the data switching circuit 420B and the first screen 310B, and between the second end 422 of the data switching circuit 420B and the second screen 320B, they can be coupled through an inter integrated circuit (I2C) bus. Between the control circuit 500B and the power supply switching circuit 410B, and between the control circuit 500B and the data switching circuit 420B, they can be coupled through a general porpose intput output (GPIO). Between the control circuit 500B and the first screen 310B, and between the control circuit 500B and the second screen 320B, they can be coupled through a bus, so that the control circuit 500B can be used to transmit the display content and the corresponding control signals to the first screen 310B and the second screen 320B through the bus.
[0057] Exemplarily, as Figure 8As shown, the second screen 320B is used to receive the first power-off signal and send the first power-off signal to the power supply circuit 210B through the second end 422 and the first end 421 of the data switching circuit 420B. For example, when the second terminal 1000B is in the second state, the control circuit 500B is used to send the first power-off signal to the second screen 320B through the bus, starting the process of switching the second terminal 1000B from the first state to the second state. The second screen 320B is used to receive the first power-off signal from the control circuit 500B through the bus. At this time, the second end 422 and the first end 421 of the data switching circuit 420B are conducted. The power supply circuit 210B is used to receive the first power-off signal through the first end 421 and the second end 422 of the data switching circuit 420B, perform reset, stop power supply, so as to stop sending the second electrical signal, and clear the information stored in the register of the power supply circuit 210B indicating the second screen 320B is lit (this information is used to indicate the output of the second electrical signal). The power supply circuit 210B is also used to send a first power-off response through the first end 421 and the second end 422 of the data switching circuit 420B. The second screen 320B is used to confirm that the power supply circuit 210B has processed the first power-off signal according to the received first power-off response. The control circuit 500B is specifically used to send a first control signal to the power switching circuit 410B. For example, before the power switching circuit 410B receives the first control signal, the second terminal 1000B is in the second state, and the input end 411 and the second output end 413 of the power switching circuit 410B are conducted. The power switching circuit 410B can be used to respond to the first control signal, disconnect the input end 411 and the second output end 413 of the power switching circuit 410B, and conduct the input end 411 and the first output end 412 of the power switching circuit 410B. The control circuit 500B is also used to send a second control signal to the data switching circuit 420B after sending the first power-off signal. The second control signal is used to indicate that the first end 421 and the third end 423 of the data switching circuit 420B are conducted and the first end 421 and the second end 422 of the data switching circuit 420B are disconnected. The control circuit 500B is specifically used to send a first power-on signal to the power supply circuit 210B. The power supply circuit is used to store the information indicating the first screen 310B is lit (this information is used to indicate the output of the first electrical signal) in the register of the power supply circuit 210B according to the first power-on signal, perform de-reset, resume power supply, and send the first electrical signal.
[0058] Optionally, such as Figure 8As shown, the first power-on signal can indicate that the power supply circuit 210B outputs the basic operating voltage required for the first screen 310B, rather than indicating the output of the screen-on voltage required for the first screen 310B (for turning on the first screen 310B). Among them, the screen-on voltage required for the first screen 310B is greater than the basic operating voltage. The control circuit 500B is further configured to send a third power-on signal to the first screen 310B after sending the first power-on signal, and the third power-on signal is used to indicate that the power supply circuit 210B outputs the screen-on voltage required for the first screen 310B. The first screen 310B is configured to receive the third power-on signal from the control circuit 500B through the bus. At this time, the third terminal 423 and the first terminal 421 of the data switching circuit 420B are conducted, and the first screen 310B is configured to send the third power-on signal to the power supply circuit 210B through the third terminal 423 and the first terminal 421 of the data switching circuit. The power supply circuit 210B is configured to output the screen-on voltage required for the first screen 310B according to the third power-on signal. The power supply circuit 210B is further configured to send a first power-on response through the first terminal 421 and the third terminal 423 of the data switching circuit 420B, and the first screen 310B is configured to confirm that the power supply circuit 210B has processed the third power-on signal according to the received first power-on response. In this way, the process of the second terminal 1000B switching from the first state to the second state is completed.
[0059] In this embodiment, the third power-on signal, the first power-off signal, the first control signal, and the second control signal are all control signals. Since the number of control channels from the control circuit 500B to the data switching circuit 420B, the control channel from the control circuit 500B to the power switching circuit 410B, and the control channel from the data switching circuit 420B to the power supply circuit 210B are all less than Figure 3 the embodiment shown, it is possible to reduce the control resources occupied by the power supply.
[0060] In some other possible embodiments, when the second terminal 1000B switches from the first state to the second state, the control circuit 500B is further configured to control the power switching circuit 410B and the power supply circuit 210B, so as to enable the power supply circuit 210B to supply power to the second screen 320B.
[0061] In some examples, the control circuit 500B is configured to send a second power-down signal, and the second power-down signal is used to instruct the power supply circuit 210B to stop sending the first electrical signal. The control circuit 500B is further configured to send a third control signal after sending the second power-down signal, and the third control signal is used to instruct conduction between the input terminal 411 and the second output terminal 413 of the power supply switching circuit 410B, and disconnection between the input terminal 411 and the first output terminal 412 of the power supply switching circuit 410B. The control circuit 500B is further configured to send a second power-up signal after sending the third control signal, and the second power-up signal is used to instruct the power supply circuit 210B to send a second electrical signal.
[0062] In this embodiment, when the second terminal 1000B switches from the first state to the second state, the control circuit 500B controls the power-on and power-off timing of the screen. First, the first screen 310B to be turned off is powered down, then the input terminal 411 of the power supply switching circuit 410B is switched to conduct with the second output terminal 413, and then the second screen 320B is powered on. The power supply circuit 210B can timely know which screen needs to output the electrical signal required by the screen at this time, avoiding switching the input terminal 411 of the power supply switching circuit 410B to conduct with the second output terminal 413 first, resulting in the power supply circuit 210B outputting the first electrical signal for the second screen 320B. In this way, the second electrical signal required by the second screen 320B can be accurately provided, and the power-on and power-off sequence of the screen can be ensured.
[0063] In some examples, the above-mentioned second power-up signal and second power-down signal can be transmitted through the data switching circuit 420B.
[0064] Exemplarily, such as Figure 9As shown, the first screen 310B is used to receive the second power-off signal and send the second power-off signal to the power supply circuit 210B through the third terminal 423 and the first terminal 421 of the data switching circuit 420B. The power supply circuit 210B is also used to send a second power-off response through the first terminal 421 and the third terminal 423 of the data switching circuit 420B. The first screen 310B is used to confirm that the power supply circuit 210B has processed the second power-off signal according to the received second power-off response. The control circuit 500B is specifically used to send a third control signal to the power switching circuit 410B. The control circuit 500B is also used to send a fourth control signal to the data switching circuit 420B after sending the second power-off signal. The fourth control signal is used to indicate that the first terminal 421 and the third terminal 423 of the data switching circuit 420B are turned on and the first terminal 421 and the second terminal 422 of the data switching circuit 420B are turned off. The control circuit 500B specifically sends a second power-on signal to the power supply circuit 210B. The signal flow of the second terminal 1000B switching from the first state to the second state can refer to the signal flow of the second terminal 1000B switching from the second state to the first state, which will not be elaborated in this embodiment of the present application.
[0065] Optionally, as Figure 9 shown, the second power-on signal can instruct the power supply circuit 210B to output the basic operating voltage required for the second screen 320B, rather than instructing the output of the screen-on voltage required for the second screen 320B (for turning on the second screen 320B). Among them, the screen-on voltage required for the second screen 320B is greater than the basic operating voltage. The control circuit 500B is also used to send a fourth power-on signal to the second screen 320B after sending the second power-on signal. The fourth power-on signal is used to instruct the power supply circuit 210B to output the screen-on voltage required for the second screen 320B. The second screen 320B is used to receive the fourth power-on signal from the control circuit 500B through the bus. At this time, the first terminal 421 and the second terminal 422 of the data switching circuit 420B are turned on. The second screen 320B is used to send the fourth power-on signal to the power supply circuit 210B through the first terminal 421 and the second terminal 422 of the data switching circuit. The power supply circuit 210B is used to output the screen-on voltage required for the second screen 320B according to the fourth power-on signal. The power supply circuit 210B is also used to send a second power-on response through the first terminal 421 and the second terminal 422 of the data switching circuit 420B. The second screen 320B is used to confirm that the power supply circuit 210B has processed the fourth power-on signal according to the received second power-on response. In this way, the process of the second terminal 1000B switching from the second state to the first state is completed.
[0066] In this embodiment, the fourth power-on signal, the second power-off signal, the third control signal, and the fourth control signal are all control signals. Since the number of control channels from the control circuit 500B to the data switching circuit 420B, the control channel from the control circuit 500B to the power supply switching circuit 410B, and the control channel from the data switching circuit 420B to the power supply circuit 210B are all less than Figure 3 the embodiment shown, the control resources occupied by the power supply can be reduced.
[0067] In some possible embodiments, the third power supply device 200B further includes a detection circuit 600B. The detection circuit 600B is configured to detect that the state of the second terminal 1000B is a first state or a second state. Exemplarily, as Figure 7 shown, the detection circuit 600B is coupled to the control circuit 500B. The detection circuit 600B may include at least one of a Hall sensor, an acceleration sensor, and a gravity sensor. The detection circuit 600B and the control circuit 500B may be coupled through a data bus, such as an I2C bus or a serial peripheral interface bus. The detection circuit 600B is configured to send a first notification signal to the control circuit 500B when detecting that the terminal switches to the first state, and the first notification signal is used to indicate the sending of the first power-off signal. The detection circuit 600B is further configured to send a second notification signal to the control circuit 500B when detecting that the terminal switches to the second state, and the second notification signal is used to indicate the sending of the second power-off signal.
[0068] In this embodiment, the detection circuit 600B detects the user behavior (such as the opening and closing operation of the folding screen terminal), determines the state switch of the second terminal 1000B between the first state and the second state, and the control circuit 500B can timely control the power supply circuit 210B to supply power to the corresponding screen according to the user behavior, providing a basis for accurately providing the corresponding screen with the required electrical signals.
[0069] In some possible embodiments, the input terminal 202 of the power supply circuit 210B may not be coupled to the battery, but to an interface (such as a charging interface). The power supply circuit 210B obtains the first electrical signal or the second electrical signal through the input terminal 202. In this embodiment, the third power supply device 200B can be applied to multiple terminals.
[0070] In some possible embodiments, the first screen 310B and the second screen 320B may require multiple power supplies, such as at least two of an input / output supply power voltage (VDDIO), a driver analog power supply (VCI), a digital power signal (DVDD), a positive power supply (ELVDD), a negative power supply (ELVSS), an analog power signal (AVDD), and a gate-off voltage (VGL). Next, an example will be given with the second terminal 1000B including a first power switching circuit coupled to VGL, a second power switching circuit coupled to AVDD, a third power switching circuit coupled to DVDD, a fourth power switching circuit coupled to ELVSS, and a fifth power switching circuit coupled to ELVDD.
[0071] Exemplarily, the data switching channel may use a single-pole double-throw switch. Both the first power switching circuit (coupled to VGL) and the fourth power switching circuit (coupled to ELVSS) may use discrete negative voltage switches or integrated negative voltage switches. Both the second power switching circuit (coupled to AVDD), the third power switching circuit (coupled to DVDD), and the fifth power switching circuit (coupled to ELVDD) may use discrete positive voltage switches or integrated positive voltage switches.
[0072] Exemplarily, if the first power-on signal indicates that the power supply circuit 210B outputs the basic operating voltage required by the first screen 310B, but does not indicate the output of the bright screen voltage required by the first screen 310B, then: the first electrical signal as the basic operating voltage required by the first screen 310B may be provided by ELVDD, and the first electrical signal is specifically sent from ELVDD to the first screen 310B through the input terminal and the first output terminal of the fifth power switching circuit; the bright screen voltage required by the first screen 310B may be provided by AVDD, and the bright screen voltage required by the first screen 310B is specifically sent from AVDD to the first screen 310B through the input terminal and the first output terminal of the second power switching circuit.
[0073] Exemplarily, if the second power-on signal indicates that the power supply circuit 210B outputs the basic operating voltage required by the second screen 320B, but does not indicate the output of the bright screen voltage required by the second screen 320B, then: the second electrical signal as the basic operating voltage required by the second screen 320B may be provided by ELVDD, and the second electrical signal is specifically sent from ELVDD to the second screen 320B through the input terminal and the second output terminal of the fifth power switching circuit; the bright screen voltage required by the second screen 320B may be provided by AVDD, and the bright screen voltage required by the second screen 320B is specifically sent from AVDD to the second screen 320B through the input terminal and the second output terminal of the second power switching circuit.
[0074] After introducing the possible circuit modules of the embodiments of the present application, the possible setting methods of these circuit modules will be introduced.
[0075] In some examples, the data switching circuit 420B and the power supply switching circuit 410B are separately arranged. Exemplarily, these five power supply switching circuits (the first power supply switching circuit, the second power supply switching circuit, the third power supply switching circuit, the fourth power supply switching circuit, and the fifth power supply switching circuit) are integrally arranged, but the data switching circuit 420B is separately arranged from these five power supply switching circuits. Exemplarily, the data switching circuit 420B is separately arranged from all of these five power supply switching circuits. For example, as Figure 10 shown, the output terminal of the power supply circuit 210B is coupled to the input terminals of the first power supply switching circuit 410B1, the second power supply switching circuit 410B2, the third power supply switching circuit 410B3, the fourth power supply switching circuit 410B4, and the fifth power supply switching circuit 410B5. The first output terminals of these five power supply switching circuits are all used to be coupled to the first screen 310B, and the second output terminals of these five power supply switching circuits are all used to be coupled to the second screen 320B. The power supply circuit 210B is coupled to the control terminals of these five power supply switching circuits.
[0076] In other examples, the data switching circuit 420B and the power supply switching circuit 410B are integrally arranged. Exemplarily, the data switching circuit 420B is integrally arranged with one of these five power supply switching circuits. Exemplarily, the data switching circuit 420B is integrally arranged with all of these five power supply switching circuits. For example, as Figure 11 shown, the data switching circuit 420B and these five power supply switching circuits are integrated on the first integrated device 710B. In this example, only one control channel needs to be set to couple the control circuit 500B and the first integrated device 710B, and there is no need to set multiple control channels between the control circuit 500B and the data switching circuit 420B, and between the control circuit 500B and these five power supply switching circuits, which can save control resources. Moreover, the occupied space of the data switching switch and the power supply switching switch is further reduced.
[0077] In still other examples, the power supply switching circuit 410B and the power supply circuit 210B are integrally arranged. For example, as Figure 12As shown, the power supply circuit 210B, the data switching circuit 420B, and these five power switching circuits are all integrated on the second integrated device 720B. In this example, only one control channel needs to be set to couple the control circuit 500B and the second integrated device 720B. There is no need to set multiple control channels between the control circuit 500B and the data switching circuit 420B, and between the control circuit 500B and these five power switching circuits. Moreover, the lines between the power supply circuit 210B and the data switching circuit 420B, and between the power supply circuit 210B and these five power switching circuits can also be reduced, thus saving control resources. Additionally, the occupied space of the power supply circuit 210B and the power switching switch is further reduced.
[0078] In some other examples, the power switching circuit 410B and the first screen 310B are integrally arranged, or the power switching circuit 410B and the second screen 320B are integrally arranged. For example, as Figure 13 shown, the first screen 310B, the data switching circuit 420B, and these five power switching circuits are all integrated on the third integrated device 730B. In this example, since the control circuit 500B is already coupled to the first screen 310B through a bus, there is no need to set multiple control channels between the control circuit 500B and the data switching circuit 420B, and between the control circuit 500B and these five power switching circuits, which can save control resources. Additionally, the occupied space of the first screen 310B, the power switching circuit 410B, and the data switching circuit 420B is further reduced.
[0079] Next, the application process of the second terminal 1000B provided in the embodiments of the present application will be introduced. Taking the first screen 310B as a folding screen and the user switching from using the second screen 320B to using the first screen 310B as an example, as Figure 14 shown.
[0080] S110: The detection module sends a first notification signal to the control circuit.
[0081] Exemplarily, the detection module detects the opening and closing operation of the user when the second terminal 1000B is in the second state. When it detects that the user unfolds the folded first screen 310B, it determines that the second terminal 1000B switches from the second state to the first state and sends a first notification signal to the control circuit.
[0082] S120: The control circuit 500B responds to the first notification signal and sends a first power-down signal to the second screen 320B.
[0083] Exemplarily, the second screen 320B sends a first power-down signal to the power supply circuit 210B through the second end 422 and the first end 421 of the data switching circuit 420B, and the power supply circuit 210B stops outputting the second electrical signal in response to the first power-down signal.
[0084] S130: After the control circuit 500B sends the first power-off signal, it sends a first control signal to the power switching circuit 410B and a second control signal to the data switching circuit 420B.
[0085] Exemplarily, in response to the first control signal, the power switching circuit 410B disconnects between the input terminal 411 and the second output terminal 413 of the power switching circuit 410B and conducts between the input terminal 411 and the first output terminal 412 of the power switching circuit 410B. In response to the second control signal, the data switching circuit 420B disconnects between the second terminal 422 and the first terminal 421 of the data switching circuit 420B and conducts between the third terminal 423 and the first terminal 421 of the data switching circuit 420B.
[0086] S140: After the control circuit 500B sends the first control signal, it sends a first power-on signal to the power supply circuit 210B.
[0087] Exemplarily, the power supply circuit 210B outputs the basic operating voltage required for the first screen 310B in response to the first power-on.
[0088] S150: After the control circuit 500B sends the first power-on signal, it sends a third power-on signal to the first screen 310B.
[0089] Exemplarily, the first screen 310B sends a third power-on signal to the power supply circuit 210B through the third terminal 423 and the first terminal 421 of the data switching circuit 420B, and the power supply circuit 210B outputs the screen-on voltage required for the first screen 310B in response to the third power-on signal.
[0090] S160: The first screen 310B operates with the screen on.
[0091] Finally, it should be noted that the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A power supply device, characterized in that, The device is applied to a terminal, the terminal includes a first screen and a second screen, and the device includes a power supply circuit and a power switch circuit; The input end of the power switch circuit is coupled to the output end of the power supply circuit. The first output end of the power switch circuit is used to couple to the first screen, and the second output end of the power switch circuit is used to couple to the second screen; The power supply circuit is used to send a first electrical signal through the input end and the first output end of the power switch circuit, or is used to send a second electrical signal through the input end and the second output end of the power switch circuit. The first electrical signal is used to supply power to the first screen, and the second electrical signal is used to supply power to the second screen.
2. The device according to claim 1, characterized in that The first screen is a folding screen; Specifically, when the terminal is in a first state, the power supply circuit is used to send the first electrical signal through the input end and the first output end of the power switch circuit. The first state is used to indicate that when the first screen is unfolded, the first screen is in a working state and the second screen is in a closed state.
3. The device according to claim 1 or 2, characterized in that, The device further includes a control circuit; The control circuit is used to send a first power-down signal, and the first power-down signal is used to instruct the power supply circuit to stop sending the second electrical signal; The control circuit is further used to send a first control signal after sending the first power-down signal. The first control signal is used to indicate that the input end and the first output end of the power switch circuit are conducted, and the input end and the second output end of the power switch circuit are disconnected; The control circuit is further used to send a first power-up signal after sending the first control signal. The first power-up signal is used to instruct the power supply circuit to send the first electrical signal.
4. The device according to claim 3, wherein The device further includes a data switch circuit. The first end of the data switch circuit is used to couple to the first screen. The first end of the data switch circuit is coupled to the data end of the power supply circuit. The second end of the data switch circuit is used to couple to the second screen; The second screen is used to receive the first power-down signal and send the first power-down signal to the power supply circuit through the first end and the second end of the data switch circuit; Specifically, the control circuit is used to send the first control signal to the power switch circuit; The control circuit is further used to send a second control signal to the data switch circuit after sending the first power-down signal. The second control signal is used to indicate that the first end and the second end of the data switch circuit are conducted, and the first end and the third end of the data switch circuit are disconnected; Specifically, the control circuit is used to send the first power-up signal to the power supply circuit.
5. The device according to claim 4, wherein, The data switch circuit and the power switch circuit are integrally arranged.
6. The device according to any one of claims 3-5, characterized in that, The device further includes a detection circuit, and the detection circuit is coupled to the control circuit; The detection circuit is used to send a first notification signal to the control circuit when detecting that the terminal switches to the first state. The first notification signal is used to indicate sending the first power-down signal.
7. The device according to claim 1, characterized in that, The first screen is a folding screen; The power supply circuit is specifically configured to transmit the second electrical signal through the input end and the second output end of the power supply switching circuit when the terminal is in the second state, and the second state is used to indicate that when the first screen is folded, the first screen is in the off state and the second screen is in the working state.
8. The device according to claim 1 or 7, characterized in that, The device further includes a control circuit; The control circuit is configured to send a second power-down signal, and the second power-down signal is used to instruct the power supply circuit to stop transmitting the first electrical signal; The control circuit is further configured to send a third control signal after sending the second power-down signal, and the third control signal is used to instruct that the input end and the second output end of the power supply switching circuit are conducted, and the input end and the first output end of the power supply switching circuit are disconnected; The control circuit is further configured to send a second power-up signal after sending the third control signal, and the second power-up signal is used to instruct the power supply circuit to transmit the second electrical signal.
9. The device according to claim 8, characterized in that, The device further includes a data switching circuit, a first end of the data switching circuit is coupled to a data end of the power supply circuit, and a third end of the data switching circuit is configured to be coupled to the first screen, and the third end of the data switching circuit is coupled to the data end of the power supply circuit; The first screen is configured to receive the second power-down signal and transmit the second power-down signal to the power supply circuit through the first end and the third end of the data switching circuit; The control circuit is specifically configured to send the third control signal to the power supply switching circuit; The control circuit is further configured to send a fourth control signal to the data switching circuit after sending the second power-down signal, and the fourth control signal is used to instruct that the first end and the third end of the data switching circuit are conducted, and the first end and the second end of the data switching circuit are disconnected; The control circuit specifically sends the second power-up signal to the power supply circuit.
10. The device according to claim 9, characterized in that, The data switching circuit and the power supply switching circuit are integrally arranged.
11. The device according to any one of claims 7 to 10, characterized in that, The device further includes a detection circuit, and the detection circuit is coupled to the control circuit; The detection circuit is configured to send a second notification signal to the control circuit when detecting that the terminal switches to the second state, and the second notification signal is used to instruct to send the second power-down signal.
12. The device according to any one of claims 1-11, characterized in that, The power supply switching circuit and the power supply circuit are integrally arranged.
13. The device according to any one of claims 1-12, characterized in that, An input end of the power supply circuit is configured to be coupled to a battery or an interface, and the power supply circuit obtains the first electrical signal or the second electrical signal through the input end.
14. A terminal, characterized in that, The terminal includes a power supply device, a first screen and a second screen, and the power supply device is the power supply device according to any one of claims 1-13.
15. The terminal according to claim 14, wherein The power supply device includes a power supply switching circuit, the power supply switching circuit and the first screen are integrally arranged, or the power supply device and the second screen are integrally arranged.