Charge recovery circuit, method and display device

Abstract

This application provides a charge recovery circuit, method, and display device. The circuit includes: a driving module; a parasitic capacitance module electrically connected to the driving module; an energy storage module electrically connected to the driving module; and a low-voltage circuit module electrically connected to the energy storage module. The driving module is configured to output charge to the parasitic capacitance module and control the connection between the parasitic capacitance module and the energy storage module. The parasitic capacitance module is configured to receive the charge output by the driving module. In response to the driving module activating the electrical connection between the parasitic capacitance module and the energy storage module, the driving module outputs charge to the energy storage module. The energy storage module is configured to store the charge output by the parasitic capacitance module and supply power to the low-voltage circuit module. Therefore, the circuit of this application realizes the recovery and utilization of residual charge.

Description

Technical Field

[0001] Embodiments of this application relate to the technical field of circuit control, and more particularly to a charge recovery circuit, method, and display device. Background Technology

[0002] In the circuitry of a display panel, there are parasitic capacitors that store excess charge. This excess charge is often released directly through the ground terminal without being utilized, thus resulting in wasted power consumption.

[0003] Therefore, a solution is needed that can recover and utilize the charge in parasitic capacitance. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a charge recovery circuit, method and display device.

[0005] For the purposes described above, this application provides a charge recovery circuit, comprising:

[0006] Driver module;

[0007] The parasitic capacitance module is electrically connected to the drive module;

[0008] The energy storage module is electrically connected to the drive module;

[0009] And a low-voltage circuit module, which is electrically connected to the energy storage module;

[0010] The driving module is configured to output charge to the parasitic capacitance module and control the connection or disconnection between the parasitic capacitance module and the energy storage module.

[0011] The parasitic capacitance module is configured to receive the charge output by the driving module; and to output charge to the energy storage module in response to the driving module activating the electrical connection between the parasitic capacitance module and the energy storage module.

[0012] The energy storage module is configured to store the charge output by the parasitic capacitor and to supply power to the low-voltage circuit module.

[0013] Furthermore, the energy storage module includes a first switching unit and a storage capacitor; the low-voltage circuit module includes a second switching unit and a low-voltage circuit unit.

[0014] The first switching unit is electrically connected to the storage capacitor and also electrically connected to the driving module;

[0015] The second switching unit is electrically connected to the low-voltage circuit unit and to the storage capacitor;

[0016] The first switching unit is configured to control the connection or disconnection between the storage capacitor and the driving module;

[0017] The second switching unit is configured to control the connection or disconnection between the low-voltage circuit unit and the energy storage module.

[0018] Furthermore, the charge recovery circuit also includes:

[0019] The loop control module is electrically connected to both the first switching unit and the second switching unit.

[0020] The loop control module is configured to set a first threshold, which is less than the minimum output voltage of the drive module; and set a second threshold, which is greater than the rated voltage of the low-voltage circuit unit, wherein the first threshold is greater than the second threshold.

[0021] In response to determining that the voltage of the storage capacitor is less than the first threshold and greater than the second threshold, the first switching unit is controlled to connect the electrical connection between the storage capacitor and the driving module, and the second switching unit is controlled to connect the electrical connection between the low-voltage circuit unit and the energy storage module.

[0022] Furthermore, the energy storage module also includes:

[0023] The grounding terminal is electrically connected to the first switching unit.

[0024] The first switching unit is also configured to control the connection or disconnection between the grounding terminal and the driving module;

[0025] The loop control module is also configured to, in response to determining that the voltage of the storage capacitor is greater than or equal to the first threshold, control the first switching unit to conduct the electrical connection between the ground terminal and the drive module.

[0026] The grounding terminal is configured to release the charge in the parasitic capacitance module.

[0027] Furthermore, the low-voltage circuit module also includes:

[0028] The low-voltage power supply terminal is electrically connected to the second switching unit.

[0029] The second switching unit is also configured to control the connection or disconnection between the low-voltage power supply terminal and the low-voltage circuit unit;

[0030] The loop control module is also configured to, in response to determining that the voltage of the storage capacitor is less than or equal to the second threshold, control the second switching unit to conduct the electrical connection between the low-voltage power supply terminal and the low-voltage circuit unit.

[0031] The low-voltage power supply terminal is configured to supply power to the low-voltage circuit unit.

[0032] Furthermore, the charge recovery circuit also includes:

[0033] The voltage detection module is electrically connected to both the circuit control module and the storage capacitor.

[0034] The voltage detection module is configured to acquire the real-time voltage of the storage capacitor and report the real-time voltage to the loop control module.

[0035] Furthermore, the charge recovery circuit also includes:

[0036] The voltage regulator module, the energy storage module, and the low-voltage circuit module are sequentially electrically connected;

[0037] The voltage regulator module is configured to regulate the voltage output by the energy storage module and provide a stable voltage to the low-voltage circuit module.

[0038] Furthermore, the charge recovery circuit also includes:

[0039] A high-voltage power supply is electrically connected to the drive module;

[0040] The drive module is also configured to, when the output voltage is greater than a preset low voltage threshold, connect the high voltage power supply to the parasitic capacitor module and disconnect the energy storage module from the parasitic capacitor module.

[0041] When the output voltage is less than or equal to the preset low voltage threshold, disconnect the electrical connection between the high voltage power supply and the parasitic capacitor module, and connect the electrical connection between the energy storage module and the parasitic capacitor module.

[0042] Based on the same inventive concept, this application also provides a charge recovery method applied to the charge recovery circuit described above, the method comprising:

[0043] The driving module outputs charge to the parasitic capacitor module and controls the connection or disconnection between the parasitic capacitor module and the energy storage module.

[0044] The parasitic capacitance module receives the charge output by the driving module;

[0045] In response to establishing an electrical connection between the parasitic capacitance module and the energy storage module, the parasitic capacitance module outputs charge to the energy storage module;

[0046] The energy storage module stores the charge output by the parasitic capacitor and supplies power to the low-voltage circuit module.

[0047] Based on the same inventive concept, this application also provides a display device, which includes the motor control circuit described in any of the above claims.

[0048] As can be seen from the above, the charge recovery circuit, method, and display device provided in this application recover the residual charge in the parasitic capacitance module based on the set energy storage module, and use the recovered residual charge for the low-voltage circuit module based on the set low-voltage circuit module. The voltage during charge recovery is comprehensively considered, and the recovered charge is used only for power supply to the low-voltage circuit module through the drive module. Furthermore, the set loop control module, first switching unit, and second switching unit realize the control of the energy storage module under different voltage conditions, so that when the voltage of the energy storage module is too low, it is only charged, and when the voltage of the energy storage module is too high, it is only discharged. Only when the voltage of the energy storage module is within the threshold voltage range, charging and discharging are carried out simultaneously, so as to ensure the normal operation of the drive module and the low-voltage circuit module when recovering and utilizing the residual charge. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a first circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0051] Figure 2 This is a second circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0052] Figure 3 This is a third circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0053] Figure 4 This is a fourth circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0054] Figure 5 This is the fifth circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0055] Figure 6 This is the sixth circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0056] Figure 7 This is the seventh circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0057] Figure 8This is the eighth circuit diagram of the charge recovery circuit according to an embodiment of this application;

[0058] Figure 9 This is a flowchart of a charge recovery method according to an embodiment of this application. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0060] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0061] As described in the background section, the relevant charge recovery circuits are still difficult to meet the needs of practical work.

[0062] In the process of developing this application, the applicant discovered that the main problem with the relevant charge recovery circuit is:

[0063] In the circuitry of a display panel, due to parasitic capacitance in or between various electronic components, excess charge that is not used to maintain the operation of the electronic components will be stored in the parasitic capacitance during circuit operation.

[0064] In actual use of display panels, excess charge in these parasitic capacitors is often released directly through the ground terminal instead of being utilized, thus resulting in wasted power consumption.

[0065] Based on this, one or more embodiments of this application provide a charge recovery circuit that recovers charge based on a set storage capacitor and applies it to a low-voltage circuit.

[0066] The embodiments of this application are described in detail below with reference to the accompanying drawings.

[0067] refer to Figure 1 One embodiment of the charge recovery circuit 1 of this application includes:

[0068] Driver module 100;

[0069] Parasitic capacitance module 200 is electrically connected to the drive module 100;

[0070] The energy storage module 300300 is electrically connected to the drive module 100;

[0071] The low-voltage circuit module 400 is electrically connected to the energy storage module 300;

[0072] The driving module 100 is configured to output charge to the parasitic capacitor module 200 and control the connection or disconnection between the parasitic capacitor module 200 and the energy storage module 300.

[0073] The parasitic capacitor module 200 is configured to receive the charge output by the driving module 100; and to output charge to the energy storage module 300 in response to the driving module 100 establishing an electrical connection between the parasitic capacitor module 200 and the energy storage module 300.

[0074] The energy storage module 300 is configured to store the charge output by the parasitic capacitor and to supply power to the low-voltage circuit module 400.

[0075] In this embodiment, with Figure 1 The charge recovery circuit 1 shown is a specific example, wherein the drive module 100 can be as follows: Figure 1 The diagram shows the source driver for the operational amplifier.

[0076] in, Figure 1 In this context, Class AB represents a Class AB power amplifier circuit and serves as a specific example of an operational amplifier. The terminal of this operational amplifier is a push-pull circuit. Based on this, it can be assumed that the drive module 100 has two terminals, each of which can be connected to different circuit modules, circuit units, circuit ports, or electronic components. It can also turn on or off any terminal to enable or disable the circuit module, circuit unit, circuit port, or electronic component connected to that terminal.

[0077] In a specific example, the voltage that the source driver can provide may be, for example, a minimum output voltage of 2V and a maximum output voltage of 6.4V. That is, the driver module 100 can provide an output voltage in the range of 2V-6.4V to the circuit module or circuit unit connected to it.

[0078] Furthermore, such as Figure 1 As shown, the charge recovery circuit 1 also includes a parasitic capacitance module 200, and the aforementioned drive module 100 is electrically connected to the parasitic capacitance module 200.

[0079] Based on this, the drive module 100 can output charge to the parasitic capacitance module 200, and each electronic component in the parasitic capacitance module 200 will receive the charge output by the drive module 100.

[0080] The parasitic capacitance module 200 can be, for example, a parasitic capacitance present in the circuitry of a display panel, or a parasitic capacitance present in other electronic devices.

[0081] Furthermore, it includes electronic devices or components for storing electrical charge, which can store remaining charge after the circuitry driving the display panel is completed. In this embodiment, for example... Figure 1 As shown, the capacitor storing charge in the parasitic capacitor module 200 is represented as C. The parasitic capacitor module 200 may also include other resistors such as R.

[0082] Furthermore, such as Figure 1 As shown, the charge recovery circuit 1 also includes an energy storage module 300. Any end of the aforementioned drive module 100 is electrically connected to the energy storage module 300. The energy storage module 300 contains electronic components or devices for storing charge, such as... Figure 1 The storage capacitor 302C1 shown in the figure, or Figure 1 Batteries, etc., not shown in the image.

[0083] Based on this, the drive module 100 achieves electrical connection with the energy storage module 300 by connecting the end connected to the energy storage module 300.

[0084] Furthermore, based on the parasitic capacitor module 200 which is directly electrically connected to the drive module 100, when the drive module 100 conducts the electrical connection between itself and the energy storage module 300, it can be considered that the drive module 100 conducts the electrical connection between the parasitic capacitor module 200 and the energy storage module 300. Therefore, the parasitic capacitor module 200 will output the stored charge to the energy storage module 300, and the energy storage module 300 will receive and store the charge output to it by the parasitic capacitor module 200.

[0085] Furthermore, the charge recovery circuit 1 also includes a low-voltage circuit module 400, which is electrically connected to the energy storage module 300.

[0086] Based on this, the energy storage module 300 can output the stored charge to the low-voltage circuit module 400 and power the low-voltage circuit module 400.

[0087] Furthermore, the low-voltage circuit module 400 includes circuits with a lower rated voltage. Specifically, a lower rated voltage can be defined as: the required supply voltage should be lower than the lowest voltage that the source driver can output.

[0088] For example, if the output voltage of the source driver is 2V-6.4V, then the rated voltage required for the low-voltage circuit module 400 should be less than 2V.

[0089] In some embodiments, in order to enable the low-voltage circuit module 400 to work properly, the rated voltage can be designed with a certain margin. For example, if the minimum output voltage of the source driver is 2V, a margin of 0.5V can be designed, and the circuit with a rated voltage of less than 1.5V can be used as the low-voltage circuit module 400 connected to the energy storage module 300.

[0090] As can be seen, after the source driver outputs voltage to the circuit driving the display panel, the remaining charge is stored in the parasitic capacitance module 200. The stored charge is then transferred to the energy storage module 300, which is electrically connected to the parasitic capacitance module 200, for storage. Therefore, the charge stored in the energy storage module 300 is the recovered residual charge, not the charge directly output by the source driver or other power sources. Furthermore, even if the residual charge continues to accumulate in the energy storage module 300, the residual charge accumulated in the energy storage module 300 is still difficult to stably support circuits with higher rated voltages because the output voltage of the source driver has a certain upper and lower limit. However, it can be used to power low-voltage circuits with lower rated voltages to achieve the recovery and utilization of residual charge.

[0091] In another embodiment of this application, the energy storage module 300 includes a first switching unit 301 and a storage capacitor 302; the low-voltage circuit module 400 includes a second switching unit 401 and a low-voltage circuit unit 402.

[0092] The first opening / closing unit 301 is electrically connected to the storage capacitor 302 and to the driving module 100;

[0093] The second switching unit 401 is electrically connected to the low-voltage circuit unit 402 and to the storage capacitor 302;

[0094] The first switching unit 301 is configured to control the connection or disconnection between the storage capacitor 302 and the driving module 100;

[0095] The second switching unit 401 is configured to control the connection or disconnection between the low-voltage circuit unit 402 and the energy storage module 300.

[0096] In this embodiment, as Figure 2 As shown, the energy storage module 300 includes a first switching unit 301 and a storage capacitor 302, wherein the storage capacitor 302 is in Figure 2 C1 is used to store the remaining charge output by the parasitic capacitance module 200.

[0097] The first opening / closing unit 301 can be, for example... Figure 2 The single-pole single-throw switch shown can also be Figure 2 The single-pole double-throw switch is not shown in the diagram, or it could be a multi-pin switch with pins, etc.

[0098] Furthermore, with Figure 2 The single-pole single-throw switch shown is a specific example of the first switching unit 301. One end of the first switching unit 301 is electrically connected to the storage capacitor 302, and the other end is electrically connected to the drive module 100, specifically to one end of the drive module 100.

[0099] Among them, the single-pole single-throw switch can be opened and closed. When opened, it conducts the electrical connection between the two ends, and when closed, it disconnects the electrical connection between the two ends.

[0100] Based on this, after the drive module 100 turns on the end connected to the first switching unit 301, the electrical connection between the storage capacitor 302 and the drive module 100 can be turned on by closing the first switching unit 301, and the electrical connection between the storage capacitor 302 and the drive module 100 can be turned off by opening the first switching unit 301.

[0101] In this embodiment, as Figure 2 As shown, the low-voltage circuit module 400 includes a second switching unit 401 and a low-voltage circuit unit 402. The low-voltage circuit unit 402 may include the circuit with a lower rated voltage as described in the previous embodiment.

[0102] Wherein, the second opening and closing unit 401 can be, for example Figure 2 The single-pole single-throw switch shown can also be Figure 2 The single-pole double-throw switch is not shown in the diagram, or it could be a multi-pin switch with pins, etc.

[0103] Furthermore, with Figure 2 The single-pole single-throw switch shown is a specific example of the second switching unit 401. One end of the second switching unit 401 is electrically connected to the low-voltage circuit unit 402, and the other end is electrically connected to the energy storage module 300, specifically to a storage capacitor 302 in the energy storage module 300.

[0104] Based on this, closing the second switching unit 401 can connect the low-voltage circuit unit 402 and the storage capacitor 302, and opening the second switching unit 401 can disconnect the electrical connection between the low-voltage circuit unit 402 and the storage capacitor 302.

[0105] As can be seen, based on the first switching unit 301 and the second switching unit 401, the storage capacitor 302 storing the remaining charge can be controlled. By closing the first switching unit 301 and the second switching unit 401, the storage capacitor 302 can be charged and power can be supplied to the low-voltage circuit unit 402. When the charge stored in the storage capacitor 302 is too much, or when the storage capacitor 302 needs to stop charging, the first switching unit 301 can be opened to disconnect the electrical connection between the energy storage module 300 and the drive module 100, so as to prevent the input of charge to the energy storage module 300. By opening the second switching unit, the electrical connection between the energy storage module 300 and the low-voltage circuit unit 402 can be disconnected, so as to prevent the supply of power to the low-voltage circuit unit 402.

[0106] In another embodiment of the application, the charge recovery circuit 1 further includes:

[0107] The loop control module 500 is electrically connected to both the first switching unit 301 and the second switching unit 401.

[0108] The loop control module 500 is configured to set a first threshold, which is less than the minimum output voltage of the drive module 100; and set a second threshold, which is greater than the rated voltage of the low-voltage circuit unit 402, wherein the first threshold is greater than the second threshold.

[0109] In response to determining that the voltage of the storage capacitor 302 is less than the first threshold and greater than the second threshold, the first switching unit 301 is controlled to conduct the electrical connection between the storage capacitor 302 and the driving module 100, and the second switching unit 401 is controlled to conduct the electrical connection between the low-voltage circuit unit 402 and the energy storage module 300.

[0110] In this embodiment, as Figure 3 As shown, the charge recovery circuit 1 is also equipped with a loop control module 500.

[0111] The loop control module 500 can be a circuit with a chip, which can have both computing and control functions.

[0112] Furthermore, such as Figure 3 As shown, the loop control module 500 is electrically connected to both the first opening and closing unit 301 and the second opening and closing unit 401. Based on this, the loop control module 500 can control the opening and closing of the first opening and closing unit 301 and the second opening and closing unit 401 respectively.

[0113] It should be noted that, Figure 3The two lines and arrows in the middle connection loop control module 500 only indicate the objects controlled by the loop control unit and the direction of the electrical connection, and do not indicate the specific connection points that are electrically connected to the first switching unit 301 and the second switching unit 401.

[0114] Furthermore, in the loop control unit, a threshold voltage range can be set. Specifically, a first threshold and a second threshold of voltage can be set, and the range between the first threshold and the second threshold is used as the threshold voltage range.

[0115] In this context, based on the output voltage range that the drive module 100 can provide as determined in the aforementioned embodiments, a voltage value less than the minimum output voltage can be selected as the first threshold; based on the rated voltage required by the low-voltage circuit module 400 as determined in the aforementioned embodiments, a voltage value greater than the rated voltage can be selected as the second threshold. It can be seen that the first threshold is greater than the second threshold.

[0116] Furthermore, the range of voltages less than the first threshold and greater than the second threshold is defined as the threshold voltage range.

[0117] In a specific example, when the drive module 100 is able to provide an output voltage in the range of 2V-6.4V, 2V can be used as the first threshold and denoted as V. min When the rated voltage required by the low-voltage circuit module 400 is 1.5V, 1.5V is used as the second threshold and denoted as VDD.

[0118] Furthermore, denoting the first threshold as V1 and the second threshold as V2, it can be determined that V min Since V1>V2>VDD, and the rated voltage required by the low-voltage circuit module 400 must be greater than 0, we can obtain V min >V1>V2>VDD>0.

[0119] Based on this, when the voltage of the storage capacitor 302 is within the threshold voltage range, that is, less than the first threshold and greater than the second threshold, the loop control module 500 can control the first switching unit 301 to be in a closed state, thereby connecting the electrical connection between the storage capacitor 302 and the drive module 100 to charge the storage capacitor 302, and control the second switching unit 401 to be in a closed state, thereby connecting the electrical connection between the low-voltage circuit unit 402 and the storage capacitor 302 to supply power to the low-voltage circuit unit 402.

[0120] As can be seen, the loop control module 500 can control the closed or open state of the first switching unit 301 and the second switching unit 401 according to the set threshold voltage range, thereby controlling the charging and discharging state of the storage capacitor 302.

[0121] In other embodiments, the charge recovery circuit 1 further includes:

[0122] The voltage detection module 600 is electrically connected to both the circuit control module 500 and the storage capacitor 302;

[0123] The voltage detection module 600 is configured to collect the real-time voltage of the storage capacitor 302 and report the real-time voltage to the loop control module 500.

[0124] In this embodiment, as Figure 4 As shown, a voltage detection module 600 can also be set in the charge recovery circuit 1.

[0125] Specifically, the voltage detection module 600 can be a voltmeter, multimeter, or other device that can detect real-time voltage.

[0126] Furthermore, such as Figure 4 As shown, the voltage detection module 600 is electrically connected to the storage capacitor 302. Based on this, the voltage detection module 600 can collect the real-time voltage of the storage capacitor 302.

[0127] Furthermore, the voltage detection module 600 is also electrically connected to the loop control module 500. Based on this, the voltage detection module 600 can send the collected real-time voltage to the loop control module 500.

[0128] Based on this, the loop control module 500 can make real-time judgments on the voltage of the storage capacitor 302, and specifically determine whether the current voltage of the storage capacitor 302 is within the threshold voltage range, higher than the first threshold, or lower than the second threshold.

[0129] In another embodiment of this application, the energy storage module 300 further includes:

[0130] Grounding terminal 303 is electrically connected to the first switching unit 301;

[0131] The first switching unit 301 is also configured to control the connection or disconnection between the grounding terminal 303 and the driving module 100;

[0132] The loop control module 500 is further configured to, in response to determining that the voltage of the storage capacitor 302 is greater than or equal to the first threshold, control the first switching unit 301 to conduct the electrical connection between the ground terminal 303 and the drive module 100.

[0133] The grounding terminal 303 is configured to release the charge in the parasitic capacitance module 200.

[0134] In this embodiment, as Figure 5As shown, the first opening / closing unit 301 can be as follows: Figure 5 The single-pole double-throw switch shown in the figure has three ends and is denoted as S1.

[0135] In this embodiment, as Figure 5 As shown, the energy storage module 300 is provided with a grounding terminal 303, which is represented by GND.

[0136] Among them, the grounding terminal 303 is electrically connected to the first switching unit 301, and specifically to one end of the single-pole double-throw switch S1, such as... Figure 5 As shown, the other two ends of S1 are electrically connected to the drive module 100 and the storage capacitor 302, respectively.

[0137] Based on this, the first switching unit 301 can form two different connection methods by connecting different ends.

[0138] Specifically, as shown in the aforementioned embodiments, on the one hand, the first switching unit 301 can connect the electrical connection between the driving module 100 and the storage capacitor 302, and disconnect the electrical connection between the driving module 100 and the ground terminal 303 at this time; on the other hand, the first switching unit 301 can disconnect the electrical connection between the driving module 100 and the storage capacitor 302, and connect the electrical connection between the driving module 100 and the ground terminal 303 at this time.

[0139] Furthermore, the loop control module 500 controls the first switching unit 301 based on the threshold voltage set in the aforementioned embodiment and the real-time voltage of the storage capacitor 302.

[0140] Specifically, when it is determined that the voltage of the storage capacitor 302 is greater than the first threshold, it is considered that the voltage of the storage capacitor 302 is too high, which will cause the voltage output by the drive module 100, taking the source driver as an example, to fail to reach the minimum output voltage.

[0141] Based on this, the loop control module 500 will control the first switching unit 301 to disconnect the electrical connection between the drive module 100 and the storage capacitor 302, so that the parasitic capacitor module 200 will no longer charge the storage capacitor 302, and will connect the electrical connection between the drive module 100 and the ground terminal 303, so that the remaining charge in the parasitic capacitor module 200 will be output to the ground terminal 303.

[0142] Furthermore, after the storage capacitor 302 is disconnected from the drive module 100, since the storage capacitor 302 is always electrically connected to the low-voltage circuit module 400, the low-voltage circuit module 400 can continuously consume the charge of the storage capacitor 302. That is, the storage capacitor 302 will continue to discharge until the voltage of the storage capacitor 302 reaches the threshold voltage range. At this time, the loop control module 500 will control the first switching unit 301 to reconnect the electrical connection between the storage capacitor 302 and the drive module 100.

[0143] It can be seen that after receiving the residual charge, the ground terminal 303 will release the residual charge to ensure that the drive module 100 can work normally and reach the minimum output voltage, and to enable the circuit of the display panel containing the parasitic capacitance module 200 to work normally.

[0144] In another embodiment of this application, the low-voltage circuit module 400 further includes:

[0145] The low-voltage power supply terminal 403 is electrically connected to the second switching unit 401;

[0146] The second switching unit 401 is also configured to control the connection or disconnection between the low-voltage power supply terminal 403 and the low-voltage circuit unit 402;

[0147] The loop control module 500 is further configured to, in response to determining that the voltage of the storage capacitor 302 is less than or equal to the second threshold, control the second switching unit 401 to conduct the electrical connection between the low-voltage power supply terminal 403 and the low-voltage circuit unit 402.

[0148] The low-voltage power supply terminal 403 is configured to supply power to the low-voltage circuit unit 402.

[0149] In this embodiment, as Figure 6 As shown, the second opening / closing unit 401 can be as follows: Figure 6 The single-pole double-throw switch shown in the figure has three ends and is denoted as S2.

[0150] In this embodiment, as Figure 6 As shown, the low-voltage circuit module 400 is provided with a low-voltage power supply terminal 403.

[0151] The low-voltage power supply terminal 403 is electrically connected to the second switching unit 401, and specifically to one end of the single-pole double-throw switch S2, such as... Figure 6 As shown, the other two ends of S2 are electrically connected to the low-voltage circuit unit 402 and the energy storage module 300, respectively.

[0152] Based on this, the second switching unit 401 can form two different connection methods by connecting different ends.

[0153] Specifically, as shown in the aforementioned embodiments, on the one hand, the second switching unit 401 can connect the energy storage module 300 and the low-voltage circuit unit 402, and disconnect the electrical connection between the low-voltage power supply terminal 403 and the low-voltage circuit unit 402 at this time; on the other hand, the second switching unit 401 can disconnect the electrical connection between the energy storage module 300 and the low-voltage circuit unit 402, and connect the electrical connection between the low-voltage power supply terminal 403 and the low-voltage circuit unit 402 at this time.

[0154] Furthermore, the loop control module 500 controls the second switching unit 401 based on the threshold voltage set in the aforementioned embodiment and the real-time voltage of the storage capacitor 302.

[0155] Specifically, when it is determined that the voltage of the storage capacitor 302 is less than the second threshold, it is considered that the voltage of the storage capacitor 302 is too low, which will make it difficult to provide stable power to the low-voltage circuit unit 402. Even if the current voltage of the storage capacitor 302 is still higher than the rated voltage of the low-voltage circuit unit 402, it is still considered that it is difficult to continuously and stably power the low-voltage circuit unit 402.

[0156] Based on this, the loop control module 500 will control the second switching unit 401 to disconnect the electrical connection between the energy storage module 300 and the low-voltage circuit unit 402, so that the storage capacitor 302 no longer supplies power to the low-voltage circuit unit 402, and connect the electrical connection between the low-voltage circuit unit 402 and the low-voltage power supply terminal 403, so that the low-voltage power supply terminal 403 can provide a stable and continuous voltage to the low-voltage circuit unit 402.

[0157] The voltage provided by the low-voltage power supply terminal 403 can reach at least the second threshold to ensure that the low-voltage circuit unit 402 can work normally; that is, in the aforementioned specific embodiment, when the second threshold is 1.5V, the low-voltage power supply terminal 403 can provide at least 1.5V.

[0158] Furthermore, after the storage capacitor 302 is disconnected from the low-voltage circuit module 400, since the storage capacitor 302 is always electrically connected to the drive module 100, the parasitic capacitor module 200 can continuously charge the storage capacitor 302 until the voltage of the storage capacitor 302 reaches the threshold voltage range. At this point, the loop control module 500 will control the second switching unit 401 to reconnect the energy storage module 300 and the low-voltage circuit unit 402.

[0159] As can be seen, based on the set threshold voltage range, when the voltage of the storage capacitor 302 is too low, the ground terminal 303 of the loop control module 500 can stop the discharge of the storage capacitor 302 in time and adjust the power supply of the low-voltage circuit unit 402 to avoid the low-voltage circuit unit 402 from having unstable voltage and being unable to work normally when it is using the remaining charge.

[0160] In another embodiment of this application, the charge recovery circuit 1 further includes:

[0161] The voltage regulator module 700, the energy storage module 300, and the low-voltage circuit module 400 are sequentially electrically connected.

[0162] The voltage regulator module 700 is configured to regulate the voltage output by the energy storage module 300 and provide a stable voltage to the low-voltage circuit module 400.

[0163] In this embodiment, as Figure 7 As shown, the charge recovery circuit 1 is equipped with a voltage regulator module 700.

[0164] The voltage regulator module 700 may be, for example, a circuit containing a linear regulator.

[0165] Furthermore, the voltage regulator module 700 is disposed between the low-voltage circuit module 400 and the energy storage module 300, and is electrically connected to both the low-voltage circuit module 400 and the energy storage module 300.

[0166] Based on this, the energy storage module 300 outputs voltage to the voltage regulator module 700, which then provides voltage to the low-voltage circuit module 400. The voltage regulator module 700 regulates the output voltage of the energy storage module 300 to ensure that the low-voltage circuit module 400 receives a stable voltage.

[0167] In another embodiment of this application, the charge recovery circuit 1 further includes:

[0168] A high-voltage power supply 800 is electrically connected to the drive module 100;

[0169] The drive module 100 is also configured to, when the output voltage is greater than a preset low voltage threshold, connect the high voltage power supply 800 and the parasitic capacitor module 200, and disconnect the energy storage module 300 and the parasitic capacitor module 200.

[0170] When the output voltage is less than or equal to the preset low voltage threshold, the electrical connection between the high voltage power supply 800 and the parasitic capacitor module 200 is disconnected, and the electrical connection between the energy storage module 300 and the parasitic capacitor module 200 is connected.

[0171] In this embodiment, as Figure 7 As shown, a high-voltage power supply 800 is provided in the charge recovery circuit 1. It can be seen that the high-voltage power supply 800 is electrically connected to the drive module 100.

[0172] Specifically, taking a source-level driver containing Class AB as an example, the high-voltage power supply 800 and the energy storage module 300 can be connected to the two ends of Class AB respectively, so that the drive module 100 can switch between the energy storage module 300 and the high-voltage power supply 800 by turning on or off the corresponding ends.

[0173] Furthermore, based on the output voltage range of the drive module 100, a low-voltage threshold can be set for the drive module 100 within the output voltage range.

[0174] In a specific example, when the output voltage of the driving module 100 is 2-6.4V, the low voltage threshold can be 4V. That is, when the driving module 100 provides a low voltage to the circuit of the display panel, it will output a voltage between 2V and 4V, while when the driving module 100 provides a high voltage to the circuit of the display panel, it will output a voltage of up to 4V.

[0175] Therefore, when the output voltage of the drive module 100 is greater than the low voltage threshold, the end of the high voltage power supply 800 is connected to establish an electrical connection between the high voltage power supply 800 and the parasitic capacitor module 200, so that the high voltage power supply 800 supplies power to the circuit of the display panel. The voltage output by the high voltage power supply 800 is higher than the low voltage threshold of 4V. At this time, the end of the drive module 100 is disconnected from the energy storage module 300 to disconnect the electrical connection between the parasitic capacitor module 200 and the energy storage module 300.

[0176] Furthermore, when the output voltage of the drive module 100 is less than or equal to the low voltage threshold, the end of the high voltage power supply 800 is disconnected to disconnect the electrical connection between the high voltage power supply 800 and the parasitic capacitor module 200, so that the drive module 100 provides a low voltage of 2V-4V to the display panel; at this time, the end of the drive module 100 is connected to the energy storage module 300 to connect the electrical connection between the parasitic capacitor module 200 and the energy storage module 300.

[0177] It can be seen that, based on the Push-Pull circuit at the Class AB end of the drive module 100, the energy storage module 300 can be used to recover the residual charge in the parasitic capacitance module 200 by turning on different ends of the Class AB circuit according to the output requirements. This allows the drive module 100 to turn off the charge recovery function when the power supply demand is not suitable for charge recovery, i.e., when the power supply is high, and to start the charge recovery function when the power supply demand is suitable for charge recovery, i.e., when the power supply is low.

[0178] In another embodiment of this application, the circuits included in all the foregoing embodiments can be combined together to obtain the following: Figure 8 The charge recovery circuit 1 shown is shown.

[0179] It includes a drive module 100, a parasitic capacitance module 200, a low-voltage circuit module 400, an energy storage module 300, a voltage regulator module 700, a loop control module 500, a voltage detection module 600, and a high-voltage power supply 800.

[0180] Furthermore, the energy storage module 300 includes a first switching unit 301 with a single-pole double-throw, a grounding terminal 303, and a storage capacitor 302.

[0181] Furthermore, the low-voltage circuit module 400 includes a second switching unit 401 with a single-pole double-throw switch, a low-voltage power supply terminal 403, and a low-voltage circuit unit 402.

[0182] Each module and unit, as well as each electronic component, is connected and configured in accordance with the manner described in the aforementioned embodiments.

[0183] Based on this, when the drive module 100 needs to output a high voltage higher than the low voltage threshold, the Class AB connection to the end of the high voltage power supply 800 is turned on and the connection to the end of the energy storage module 300 is turned off, so that the high voltage power supply 800 supplies high voltage to the circuit of the display panel containing the parasitic capacitor module 200.

[0184] When the drive module 100 needs to output a low voltage less than or equal to the low voltage threshold, the Class AB is disconnected from the end of the high voltage power supply 800 and connected to the end of the energy storage module 300, so that the energy storage module 300 can recover and utilize the residual charge of the parasitic capacitor module 200.

[0185] Specifically, when recovering and utilizing residual charge, the loop control module 500 judges the real-time voltage of the storage capacitor 302 sent by the voltage detection module 600. When it is determined that the voltage of the storage capacitor 302 is within the threshold voltage range, the first switching unit 301 is controlled to conduct the electrical connection between the storage capacitor 302 and the drive module 100, and the second switching unit 401 is controlled to conduct the electrical connection between the energy storage module 300 and the low-voltage circuit unit 402. The voltage is stabilized by the voltage regulator module 700.

[0186] Furthermore, when the loop control module 500 determines that the voltage of the storage capacitor 302 is higher than the first threshold voltage range, it controls the first switching unit 301 to disconnect the electrical connection between the storage capacitor 302 and the drive module 100, and controls the second switching unit 401 to maintain the conduction state between the energy storage module 300 and the low-voltage circuit unit 402, and uses the voltage regulator module 700 to maintain the voltage output of the storage capacitor 302 stable, so that the storage capacitor 302 continues to discharge until its voltage drops to the threshold voltage range. Then, the loop control module 500 will control the first switching unit 301 to reconnect the electrical connection between the storage capacitor 302 and the drive module 100.

[0187] Furthermore, when the loop control module 500 determines that the voltage of the storage capacitor 302 is lower than the second threshold of the threshold voltage range, it controls the second switching unit 401 to disconnect the electrical connection between the energy storage module 300 and the low-voltage circuit unit 402, and controls the first switching unit 301 to maintain the conduction state between the storage capacitor 302 and the drive module 100, so that the storage capacitor 302 continues to charge until its voltage rises to the threshold voltage range. Then, the loop control module 500 will control the second switching unit 401 to reconnect the electrical connection between the energy storage module 300 and the low-voltage circuit unit 402.

[0188] As can be seen, the charge recovery circuit 1 of this application recovers the residual charge in the parasitic capacitance module 200 based on the provided energy storage module 300, and uses the recovered residual charge in the provided low-voltage circuit module 400. It comprehensively considers the voltage when recovering the charge, and uses the drive module 100 to ensure that the recovered charge is used only to power the low-voltage circuit module 400. Furthermore, through the provided loop control module 500, the first switching unit 301 and the second switching unit 401, the energy storage module 300 under different voltage conditions is controlled, so that when the voltage of the energy storage module 300 is too low, it is only charged, and when the voltage of the energy storage module 300 is too high, it is only discharged. Only when the voltage of the energy storage module 300 is within the threshold voltage range, charging and discharging are performed simultaneously, so as to ensure the normal operation of the drive module 100 and the low-voltage circuit module 400 when recovering and utilizing the residual charge.

[0189] For ease of description, the circuits described above are divided into various modules and / or units based on their functions. Of course, in implementing the embodiments of this application, the functions of each module and / or unit can be implemented in one or more software and / or hardware.

[0190] Based on the same inventive concept, and corresponding to the circuits of any of the above embodiments, embodiments of this application also provide a charge recovery method.

[0191] refer to Figure 9 The charge recovery method, applied to the charge recovery circuit in any of the foregoing embodiments, specifically includes the following steps:

[0192] Step S901: The driving module outputs charge to the parasitic capacitor module and controls the connection or disconnection between the parasitic capacitor module and the energy storage module.

[0193] Step S902: Make the parasitic capacitance module receive the charge output by the driving module;

[0194] Step S903: In response to establishing the electrical connection between the parasitic capacitance module and the energy storage module, the parasitic capacitance module outputs charge to the energy storage module;

[0195] Step S904: The energy storage module stores the charge output by the parasitic capacitor and supplies power to the low-voltage circuit module.

[0196] It should be noted that the charge recovery method of this application can be executed by a single device, such as a computer or server. The method of this embodiment can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method of this application, and the multiple devices will interact with each other to complete the method described.

[0197] It should be noted that the above description describes some embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0198] Based on the same inventive concept, corresponding to the circuits of any of the above embodiments, this application also provides a display device, the display device including the charge recovery circuit as described in any of the above embodiments, the charge recovery circuit performing the charge recovery method as described in any of the above embodiments.

[0199] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0200] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0201] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0202] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A charge recovery circuit, characterized by, The application relates to a charge recovery circuit. The charge recovery circuit comprises: a driving module; a parasitic capacitance module electrically connected to the driving module; an energy storage module electrically connected to the driving module; a high-voltage power supply electrically connected to the driving module; and a low-voltage circuit module electrically connected to the energy storage module. The driving module is configured to output electric charges to the parasitic capacitance module and control the on or off of the electric connection between the parasitic capacitance module and the energy storage module. The parasitic capacitance module is configured to receive the electric charges output by the driving module. In response to the electric connection between the parasitic capacitance module and the energy storage module being turned on by the driving module, the parasitic capacitance module outputs electric charges to the energy storage module. The energy storage module is configured to store the electric charges output by the parasitic capacitance module and supply power to the low-voltage circuit module. The driving module is further configured to, when the output voltage is greater than a preset low-voltage threshold, turn on the electric connection between the high-voltage power supply and the parasitic capacitance module and turn off the electric connection between the energy storage module and the parasitic capacitance module.

2. The circuit of claim 1, wherein, When the output voltage is less than or equal to the preset low-voltage threshold, the electric connection between the high-voltage power supply and the parasitic capacitance module is turned off and the electric connection between the energy storage module and the parasitic capacitance module is turned on. The energy storage module comprises a first on-off unit and a storage capacitor. The first on-off unit is electrically connected to the storage capacitor and the driving module. The second on-off unit is electrically connected to the low-voltage circuit unit and the storage capacitor. The first on-off unit is configured to control the on or off of the electric connection between the storage capacitor and the driving module.

3. The circuit of claim 2, wherein, The second on-off unit is configured to control the on or off of the electric connection between the low-voltage circuit unit and the energy storage module. The charge recovery circuit further comprises: a loop control module electrically connected to the first on-off unit and the second on-off unit. The loop control module is configured to set a first threshold value, which is less than the minimum output voltage of the driving module; set a second threshold value, which is greater than the rated voltage of the low-voltage circuit unit, and the first threshold value is greater than the second threshold value.

4. The circuit of claim 3, wherein, In response to judging that the voltage of the storage capacitor is less than the first threshold value and greater than the second threshold value, the loop control module controls the first on-off unit to turn on the electric connection between the storage capacitor and the driving module and controls the second on-off unit to turn on the electric connection between the low-voltage circuit unit and the energy storage module. The energy storage module further comprises: a grounding end electrically connected to the first on-off unit. The first on-off unit is further configured to control the on or off of the electric connection between the grounding end and the driving module. The loop control module is further configured to, in response to judging that the voltage of the storage capacitor is greater than or equal to the first threshold value, control the first on-off unit to turn on the electric connection between the grounding end and the driving module.

5. The circuit of claim 3, wherein, The grounding end is configured to release the electric charges in the parasitic capacitance module. The low-voltage circuit module further comprises: a low-voltage power supply end electrically connected to the second on-off unit. The second opening and closing unit is further configured to control the conduction or disconnection between the low-voltage power supply end and the low-voltage circuit unit. The loop control module is further configured to, in response to judging that the voltage of the storage capacitor is less than or equal to the second threshold value, control the second opening and closing unit to conduct the electrical connection between the low-voltage power supply end and the low-voltage circuit unit. The low-voltage power supply end is configured to supply power to the low-voltage circuit unit.

6. The circuit of claim 3, wherein, The charge recovery circuit further comprises: A voltage detection module, which is electrically connected to the loop control module and the storage capacitor; The voltage detection module is configured to collect the real-time voltage of the storage capacitor and report the real-time voltage to the loop control module.

7. The circuit of claim 1, wherein, The charge recovery circuit further comprises: A voltage stabilizing module, which is sequentially electrically connected between the energy storage module, the voltage stabilizing module and the low-voltage circuit module; The voltage stabilizing module is configured to stabilize the voltage output by the energy storage module and provide stable voltage to the low-voltage circuit module.

8. A charge recovery method characterized by, The method is applied to the charge recovery circuit as claimed in any one of claims 1 to 7, and the method comprises: Causing the driving module to output charges to the parasitic capacitor module and to control the conduction or disconnection between the parasitic capacitor module and the energy storage module; Causing the parasitic capacitor module to receive the charges output by the driving module; In response to conducting the electrical connection between the parasitic capacitor module and the energy storage module, causing the parasitic capacitor module to output charges to the energy storage module; Causing the energy storage module to store the charges output by the parasitic capacitor and to supply power to the low-voltage circuit module.

9. A display device comprising the circuit as claimed in any one of claims 1 to 7.

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