Power supply driving device, display module and control method of display module

Abstract

The invention discloses a power supply driving device, a display module and a control method of the display module. The power supply driving device comprises at least one internal power supply and at least one functional module, the power supply driving device is used for supplying power to the functional module by utilizing an internal power supply in a first driving mode of a load of the power supply driving device, so that the power supply driving device supplies power to the load under the driving of a control time sequence signal; and the power supply driving device is also used for supplying power to the functional module by using the external power supply in the second driving mode of the load, so that the power supply driving device supplies power to the load under the driving of the control time sequence signal. The power supply driving device adjusts the power supply voltage of the internal function module based on the driving mode of the load, so that the voltage drop caused by overlarge internal wire resistance of the device is avoided through the power supply of the internal power supply in the high driving mode of the load; in the low driving mode of the load, the loss of conversion efficiency is avoided through the power supply of the external power supply, and the power consumption of a driving device is reduced.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of circuit design, and more particularly to a power driving device, a display module, and a control method for a display module. Background Art

[0002] With the rapid development of display technology, a driving chip (Driver IC, DIC), as the core electronic component for controlling a display device, is responsible for converting digital signals into electrical signals recognizable by the display device, thereby precisely controlling the display effect of each pixel.

[0003] However, when the display device displays different load contents, the existing display driving chips still have the problem of unstable driving effects. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a power driving device, a display module, and a control method for a display module. When the power driving device drives the display device to display different contents, the stability of the driving effect is ensured by adjusting the supply voltage.

[0005] The power driving device is as follows: According to a first aspect of the present application, there is provided a power driving device, including at least one internal power supply and at least one functional module; the functional module is used to output a control timing signal; The power driving device is configured to, in a first driving mode of a load of the power driving device, supply power to the functional module by using the internal power supply, so that the power driving device supplies power to the load under the drive of the control timing signal; The power driving device is further configured to, in a second driving mode of the load, supply power to the functional module by using an external power supply, so that the power driving device supplies power to the load under the drive of the control timing signal; the output voltage of the power driving device to the load in the first driving mode is greater than the output voltage of the power driving device to the load in the second driving mode.

[0006] In addition, the power driving device of the present application may further have the following additional technical features: Preferably, the power driving device further includes a voltage regulation module, and the voltage regulation module is respectively connected to an output end of the internal power supply and the functional module, The voltage regulation module is configured to adjust the voltage value input from the output end of the internal power supply to the functional module based on the output voltage value of the external power supply.

[0007] Preferably, when the load of the power driving device is in the first driving mode, powering the functional module with the internal power supply includes: In the first driving mode, the voltage regulation module adjusts the voltage value output by the internal power supply to a target voltage value greater than the voltage output by the external power supply.

[0008] Preferably, when the load is in the second driving mode, powering the functional module with the external power supply includes: In the second driving mode, the voltage regulation module adjusts the voltage value output by the internal power supply to a target voltage value less than the voltage output by the external power supply.

[0009] Preferably, the voltage regulation module includes a register; The power driving device is further configured to write a target voltage value to the register based on the output voltage value of the external power supply; The power driving device is further configured to read the target voltage value from the register and adjust the output voltage of the internal power supply to the target voltage value.

[0010] Preferably, the functional module includes a logic sub-module and a storage sub-module, and the input ends of the logic sub-module and the storage sub-module are respectively connected to the output end of the internal power supply and the output end of the external power supply; The logic sub-module is configured to generate a control timing signal of the power driving device; The storage sub-module is configured to cache the output data of the power driving device and read the output data based on the control timing signal.

[0011] Preferably, the input voltage value of the logic sub-module is less than the input voltage value of the storage sub-module.

[0012] Preferably, the load is a display device, and the refresh frequency of the display device in the first driving mode is greater than the refresh frequency of the display device in the second driving mode.

[0013] According to a second aspect of the present application, there is provided a display module, which includes the power driving device described in the first aspect and a display device, and the power driving device is configured to supply power to the display device.

[0014] According to a third aspect of the present application, there is provided a control method for a display module, and the method includes: Determine the display mode of the display module, determine the driving mode of the display module based on the display mode, and determine the driving mode of the power driving device based on the driving mode of the display module; the driving mode of the power driving device includes internal power supply driving based on the internal power supply of the power driving device, or external voltage driving based on the power driving device. Adjust the driving voltage of the power driving device to the display module based on the driving mode of the power driving device.

[0015] For the power driving device, display module and control method of the display module provided by the embodiments of the present application, on the one hand, compared with the prior art where the external power supply of the power driving device supplies power to the functional module under high-load driving, it is easy to generate voltage drops, resulting in unstable output voltage of the power driving device. The present application uses the internal power supply of the power driving device to supply power to the functional module, thus avoiding the voltage drop caused by large line resistance consumption and ensuring the stability of the output of the power driving device. On the other hand, compared with the prior art where the external power supply of the power driving device has large internal power consumption when supplying power under low-load driving, the present application uses the external power supply of the power driving device to supply power to the functional module, thus avoiding the power loss during voltage conversion of the existing voltage regulation module and reducing the internal power consumption of the power driving device.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0017] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present application will become more apparent: Figure 1 is one of the schematic diagrams of the power driving device 10 provided by the embodiments of the present application; Figure 2 is another schematic diagram of the power driving device 10 provided by the embodiments of the present application; Figure 3 is the third schematic diagram of the power driving device 10 provided by the embodiments of the present application; Figure 4 is the power supply selection schematic diagram of the functional module 102 provided by the embodiments of the present application; Figure 5 is the flow schematic diagram of the control method of the display module 20 provided by the embodiments of the present application; Figure 6 is the driving timing schematic diagram of the power driving device 10 provided by the embodiments of the present application; Figure 7It is a schematic structural diagram of a computer device provided by an embodiment of the present application; In the above figure: AVDD - Supply voltage for analog devices; VCI - Analog power supply voltage for the driver; VDDI - Supply voltage for I / O; DVDD - Supply voltage for digital signals; VDD_LDO - The first regulation sub-module 1041; VDDM_LDO - The second regulation sub-module 1042; 700 - Computer device; 701 - Central processing unit (CPU); 702 - Read-only memory (ROM); 703 - Random access memory (RAM); 704 - Bus; 705 - Input / output (I / O) interface; 706 - Input part; 707 - Output part; 708 - Storage part; 709 - Communication part; 710 - Driver; 711 - Removable medium. Detailed implementation manners

[0018] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. Additionally, it should be noted that for the convenience of description, only the parts related to the invention are shown in the drawings.

[0019] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments. Additionally, the term "and / or" in this document is only a description of 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. The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects, rather than to describe the specific order of the objects.

[0020] The following terms related to the present application are explained: (1) 3 - way voltage power supply mode (3 Power mode): One of the power supply modes for driving devices, specifically including the analog power supply voltage VCI for the driver, the supply voltage AVDD for analog devices, and the supply voltage VDDI for I / O; (2) 4 - way voltage power supply mode (4 Power mode): One of the power supply modes for driving devices, specifically including the analog power supply voltage VCI for the driver, the supply voltage VDDI for I / O, the supply voltage AVDD for analog devices, and the supply voltage DVDD for digital signals; (3) Always On Display Mode (abbreviated as AOD): A function that allows the display device to display useful thumbnail information.

[0021] In the prior art, a 3-voltage power supply mode or a 4-voltage power supply mode is usually adopted to supply power to a driving device. Specifically, when the 4-voltage power supply mode is adopted to supply power to the driving device, the digital signal power supply voltage DVDD among the 4 voltages is the external power supply voltage of the driving device.

[0022] Based on this, in one case, when DVDD directly supplies power to the functional modules inside the driving device, in the case of high-load driving, due to large line resistance consumption of the main board and the like inside the driving device, it is easy to cause high power consumption of the driving device. To this end, the loss can be reduced by widening the internal traces of the driving device; however, wider traces are likely to affect the internal circuit layout and are also likely to generate voltage drops due to large line resistance, affecting the normal driving effect of the driving device.

[0023] In another case, since the output voltage of DVDD is large, it is usually necessary to supply power to the functional modules inside the driving device after adjusting the voltage through a voltage regulator inside the driving device. Therefore, when DVDD directly supplies power to the voltage regulator inside the driving device, due to the loss of the conversion efficiency of the voltage regulator, it will also cause large power consumption of the driving device.

[0024] Based on this, the present application proposes a power driving device 10. The power driving device 10 can adjust the power supply voltage of the internal functional modules based on the driving mode of the load, thereby avoiding voltage drops caused by excessive internal line resistance of the device through the power supply of the internal power supply in the high driving mode of the load; in the low driving mode of the load, the loss of conversion efficiency is avoided through the power supply of the external power supply, reducing the power consumption of the driving device.

[0025] Figure 1 is one of the schematic diagrams of the power driving device 10 provided by the embodiments of the present application, as Figure 1 shown, the power driving device 10 includes at least one internal power supply 101 and at least one functional module 102.

[0026] Exemplarily, when the power supply mode of the power driving device 10 is the 4-voltage power supply mode, referring to Figure 1 , the internal power supply 101 of the power driving device 10 may include a driver analog power supply voltage VCI, an I / O power supply voltage VDDI, and an analog device power supply voltage AVDD, and the external power supply 103 of the power driving device 10 may be a digital signal power supply voltage DVDD.

[0027] Exemplarily, the functional module 102, as the core functional module of the power driving device 10, can be used to output control timing signals.

[0028] In a possible implementation, based on different driving modes of the load of the power driving device 10, the power driving device 10 supplies power to the functional module 102 using different power sources, so that the power driving device 10 supplies power to the load under the drive of the control timing signal output by the functional module 102.

[0029] Exemplarily, in the first driving mode of the load of the power driving device 10, the internal power source 101 is used to supply power to the functional module 102. Among them, the internal power source 101 supplying power to the functional module 102 can be the I / O supply voltage VDDI.

[0030] Exemplarily, in the second driving mode of the load of the power driving device 10, the external power source 103 is used to supply power to the functional module 102. Among them, the external power source 103 supplying power to the functional module 102 can be the digital signal supply voltage DVDD.

[0031] Specifically, the output voltage of the power driving device 10 to the load in the first driving mode is greater than the output voltage of the power driving device 10 to the load in the second driving mode.

[0032] It should be noted that based on the fact that the output voltage of the power driving device 10 to the load in the first driving mode is greater than that in the second driving mode, the first driving mode can correspond to the high-load driving mode. In this driving mode, supplying power to the functional module 102 through the internal power source 101 can avoid the voltage drop caused by line loss, thus ensuring the normal driving function of the power driving device 10; among them, the high load means that the display device has a high power consumption, a relatively fluctuating refresh rate, and a high delay when displaying a picture. For example, it can be the load in scenarios such as running 3A games, playing high-frame-rate videos, and multi-screen high-resolution output.

[0033] The second driving mode can correspond to the low-load driving mode. In this driving mode, without converting the voltage through the voltage regulation module, directly supplying power to the functional module 102 using the external power source 103 can avoid the loss of conversion efficiency, thus achieving the purpose of reducing power consumption; among them, the low load means that the display device has a low power consumption, a relatively stable refresh rate, and a low delay when displaying a picture. For example, it can be the load in scenarios such as displaying static images, running basic office software, playing low-resolution videos or simple animations.

[0034] For the power driving device 10 provided by the embodiment of the present application, on the one hand, compared with the external power supply of the power driving device in the prior art, when supplying power to the functional module under high-load driving, voltage drop is likely to occur, resulting in unstable output voltage of the power driving device. In the present application, the internal power supply 101 of the power driving device 10 is used to supply power to the functional module 102, thus avoiding the voltage drop caused by large line resistance consumption and ensuring the stability of the output of the power driving device 10. On the other hand, compared with the large internal power consumption of the power driving device when the external power supply supplies power under low-load driving in the prior art, in the present application, the external power supply 103 of the power driving device 10 is used to supply power to the functional module 102, thus avoiding the power loss during voltage conversion of the existing voltage regulation module and reducing the internal power consumption of the power driving device 10.

[0035] In another embodiment of the present application, other components of the power driving device 10 are also provided. Exemplarily, the power driving device 10 further includes a voltage regulation module 104. Figure 2 This is the second schematic diagram of the power driving device 10 provided by the embodiment of the present application. As Figure 2 shown, the voltage regulation module 104 is respectively connected to the output end of the internal power supply 101 and the functional module 102. In a possible implementation manner, the voltage regulation module 104 can adjust the voltage value input from the output end of the internal power supply 101 to the functional module 102 based on the output voltage value of the external power supply 103.

[0036] In the embodiment of the present application, when the internal power supply 101 and the external power supply 103 are connected in parallel to the functional module 102, usually the power supply with a higher voltage dominates the load power supply (that is, supplies power to the functional module 102). Therefore, the voltage regulation module 104 can be used to change the power supply voltage of the functional module 102, specifically the output voltage of the internal power supply 101 or the output voltage of the external power supply 103, by adjusting the output voltage value of the internal power supply 101.

[0037] Exemplarily, in the first driving mode of the load of the power driving device 10, the voltage regulation module 104 adjusts the output voltage value of the internal power supply 101 to a target voltage value greater than the output voltage of the external power supply 103, so as to supply power to the functional module 102 using the internal power supply 101.

[0038] Exemplarily, in the second driving mode of the load of the power driving device 10, the voltage regulation module 104 adjusts the output voltage value of the internal power supply 101 to a target voltage value less than the output voltage of the external power supply 103, so as to supply power to the functional module 102 using the external power supply 103.

[0039] Specifically, the voltage regulation module 104 can be a Low Dropout Regulator (LDO for short). For example, the voltage regulation module 104 can include a register.

[0040] In this case, the power supply driving device 10 can be used to write a target voltage value to the register based on the output voltage value of the external power supply 103, and read the target voltage value from the register, so as to adjust the output voltage of the internal power supply 101 to the target voltage value.

[0041] In another embodiment of the present application, the specific composition of the functional module 102 is also provided. Exemplarily, the functional module 102 includes a logic sub-module 1021 and a storage sub-module 1022. Figure 3 is the third schematic diagram of the power supply driving device 10 provided by the embodiment of the present application. As Figure 3 shown, the input ends of the logic sub-module 1021 and the storage sub-module 1022 are respectively connected to the output end of the internal power supply 101 and the output end of the external power supply 103.

[0042] Exemplarily, the logic sub-module 1021 is also called the Logic module, and can be used to generate the control timing signal of the power supply driving device 10; the storage sub-module 1022 is also called the SRAM module, and can be used to cache the output data of the power supply driving device 10 and read the output data based on the control timing signal.

[0043] Based on this, referring to Figure 3 , the voltage regulation module 104 includes a first regulation sub-module 1041 and a second regulation sub-module 1042; wherein, when the voltage regulation module 104 is an LDO, the first regulation sub-module 1041 can be called the VDD_LDO module, and the second regulation sub-module 1042 can be called the VDDM_LDO module.

[0044] Correspondingly, the first output end of the I / O supply voltage VDDI in the internal power supply 101 is connected to the logic sub-module 1021 through the first regulation sub-module 1041, and the second output end of the I / O supply voltage VDDI in the internal power supply 101 is connected to the storage sub-module 1022 through the second regulation sub-module 1042; the first output end VDD and the second output end VDDM of the external power supply 103 are connected on a Flexible Printed Circuit (FPC for short), and are respectively connected to the logic sub-module 1021 and the storage sub-module 1022.

[0045] Specifically, the first output terminal of the I / O supply voltage VDDI can be VDDI_LP generated based on VDDI, where the voltage value of VDDI_LP is less than that of VDDI; for example, the output voltage value of VDDI is 1.8V, and the output voltage value of VDDI_LP is 1.25V.

[0046] For example, Figure 4 is a schematic diagram of the power supply selection of the functional module 102 provided by the embodiment of the present application. As Figure 4 shown, the functional module 102 includes a logic sub-module 1021 and a storage sub-module 1022. When the voltage regulation module 104 acts as an LDO, Figure 3 the first regulation sub-module 1041 involved in it can be the VDD_LDO module, and the second regulation sub-module 1042 can be the VDDM_LDO module; among them, VDDI_LP is connected to the VDD_LDO module, and the voltage at point A is generated through the VDD_LDO module; VDDI is connected to the VDDM_LDO module, and the voltage at point B is generated through the VDDM_LDO module.

[0047] For example, the output voltage value of VDDI is 1.8V, the output voltage value of VDDI_LP is 1.25V, and the output voltage value of the external power supply 103External DVDD is 0.85V.

[0048] Correspondingly, when the power supply driving device 10 is used to drive the display device to display a picture with a higher refresh rate (that is, the driving mode is the first driving mode), the output voltage of VDDI_LP (that is, 1.25V) is adjusted to 0.9V through the VDD_LDO module (that is, the voltage at point A is 0.9V), and the output voltage of VDDI (that is, 1.8V) is adjusted to 0.9V through the VDDM_LDO module (the voltage at point B is 0.9V). In this case, the output voltage values of the internal power supply 101 at points A and B (that is, 0.9V) are higher than the output voltage value of the external power supply 103DVDD (that is, 0.85V), so the internal power supply 101 is used to supply power to the functional module 102. That is, Internal VDD = 0.9V, Internal VDDM = 0.9V.

[0049] Optionally, when the power supply driving device 10 is used to drive the display device to display a picture with a relatively low refresh rate (i.e., the driving mode is the second driving mode), the output voltage of VDDI_LP (i.e., 1.25V) is adjusted to 0.75V through the VDD_LDO module (i.e., the voltage at point A is 0.75V), and the output voltage of VDDI (i.e., 1.8V) is adjusted to 0.75V through the VDDM_LDO module (the voltage at point B is 0.75V). In this case, the output voltage values of the internal power supply 101 at points A and B (i.e., 0.75V) are lower than the output voltage value of the external power supply 103 DVDD (i.e., 0.85V), and the output voltage values of the internal power supply 101 at points A and B are too low to drive the functional module 102. Therefore, the external power supply 103 is used to supply power to the functional module 102. That is, Internal VDD = 0.85V, Internal VDDM = 0.85V.

[0050] It should be noted that the reason why the input voltage value of the above-mentioned logic sub-module 1021 is less than the input voltage value of the storage sub-module 1022 (for example, the voltage value of VDDI_LP is less than the voltage value of VDDI) is that the logic sub-module 1021 can reduce the frequency and voltage during idle time by adopting a low voltage, thereby reducing the dynamic power consumption; while maintaining a higher voltage for the storage sub-module 1022 can ensure the stability of the static current of the storage unit, thereby avoiding data loss due to leakage.

[0051] Exemplarily, the functional module 102 may further include an MIPI sub-module to receive and transmit the original driving data of the power supply driving device 10 by using the MIPI sub-module.

[0052] In another embodiment of the present application, a form of manifestation of the load of the power supply driving device 10 is also provided. Exemplarily, the load of the power supply driving device 10 is a display device, and the refresh frequency of the display device in the first driving mode is greater than the refresh frequency of the display device in the second driving mode.

[0053] Exemplarily, when the load of the power supply driving device 10 is a display device and the above-mentioned functional module 102 includes a logic sub-module 1021, a storage sub-module 1022, and an MIPI sub-module, the working process of the functional module 102 is, for example, as follows: (1) Receive the display image data and instructions through the MIPI sub-module, convert the serial data into a parallel format by the MIPI sub-module, and transmit it to the logic sub-module 1021; Exemplarily, the instructions received by the MIPI sub-module may include pre-configured display resolution, refresh rate, etc.; (2) The logic sub-module 1021 receives and parses the instructions sent by the MIPI sub-module, thereby generating a control timing signal, and temporarily stores the image data in the storage sub-module 1022; Exemplarily, the storage sub-module 1022 can be used to cache a complete display frame or a partial display update area; (3) The logic sub-module 1021 controls the storage sub-module 1022 to read data according to the control timing signal, and forms a driving voltage through a digital-to-analog conversion method or a PWM modulation method, so as to output the driving voltage to the source / gate driving circuit.

[0054] In another embodiment of the present application, a display module 20 is further introduced. The display module 20 may include the power driving device 10 and the display device described in the foregoing embodiments.

[0055] In a possible implementation, the display module 20 can be used to output image information. Exemplarily, the display module 20 can display text images by controlling semiconductor light-emitting diodes; for example, the display module 20 can be an OLED display screen.

[0056] In another embodiment of the present application, a control method for a display module 20 is further provided. Figure 5 It is a schematic flowchart of the control method for the display module 20 provided by the embodiments of the present application, as Figure 5 shown, the method includes the following steps: S501, determine the display mode of the display module 20, determine the driving mode of the display module 20 based on the display mode, and determine the driving mode of the power driving device 10 based on the driving mode of the display module 20.

[0057] Exemplarily, the display mode of the display module 20 can be determined based on the received instruction of the display module 20. For example, when the received instruction of the display module 20 is the Enter AOD mode instruction 39h, the display mode of the display module 20 can be determined to be a low refresh rate display mode; when the received instruction of the display module 20 is the Exit AOD mode instruction 38h, the display mode of the display module 20 can be determined to be a high refresh rate display mode.

[0058] Correspondingly, when the display mode of the display module 20 is a low refresh rate display mode, the driving mode of the display module 20 is a low load driving mode. At this time, the driving mode of the power driving device 10 can be determined to be the above-mentioned second driving mode; when the display mode of the display module 20 is a high refresh rate display mode, the driving mode of the display module 20 is a high load driving mode. At this time, the driving mode of the power driving device 10 can be determined to be the above-mentioned first driving mode.

[0059] S502, adjust the driving voltage of the power driving device 10 to the display module 20 based on the driving mode of the power driving device 10.

[0060] Exemplarily, when the driving mode of the power supply driving device 10 is the first driving mode, the internal power supply is used to supply power to the functional module 102; when the driving mode of the power supply driving device 10 is the second driving mode, the external power supply 103 is used to supply power to the functional module 102.

[0061] Specifically, Figure 6 is the driving timing schematic diagram of the power supply driving device 10 provided by the embodiment of the present application. As Figure 6 shown, when the received instruction of the display module 20 is the Enter AOD mode instruction 39h, it indicates that the driving mode of the display module 20 needs to be changed from the high-load driving mode (i.e., Normal mode) to the low-load driving mode (i.e., AOD mode). At this time, 2 display frames are required for the mode conversion. Based on this, within 2 display frames after receiving the conversion instruction, the power supply for the functional module 102 remains the internal power supply 101 of the power supply driving device 10 (for example, the supply voltage of the functional module 102 of the power supply driving device 10 remains 0.9V within these 2 display frames); after the driving mode of the display module 20 is stabilized in the low-load driving mode, referring to Figure 4 , the output voltages of points A and B can be adjusted respectively by the first adjustment sub-module 1041 and the second adjustment sub-module 1042 until the output voltages of points A and B are so small that they cannot drive the functional module 102 (for example, 0.75V), so as to use the external power supply 103 to supply power to the functional module 102.

[0062] Secondly, as Figure 6 shown, when the received instruction of the display module 20 is the Exit AOD mode instruction 38h, it indicates that the driving mode of the display module 20 needs to be changed from the low-load driving mode to the high-load driving mode. At this time, 1 display frame is required for the mode conversion. Based on this, within 1 display frame after receiving the conversion instruction, the power supply for the functional module 102 remains the external power supply 103 of the power supply driving device 10 (for example, the supply voltage of the functional module 102 of the power supply driving device 10 remains 0.85V within this 1 display frame); after the driving mode of the display module 20 is stabilized in the high-load driving mode, referring to Figure 4 , the output voltages of points A and B can be adjusted respectively by the first adjustment sub-module 1041 and the second adjustment sub-module 1042 until the output voltages of points A and B are greater than the output voltage of the external power supply 103 (for example, 0.9V), so as to use the internal power supply 101 to supply power to the functional module 102.

[0063] It should be noted that during the process of converting the driving mode of the display module 10, it is necessary to go through one or two display frames for mode conversion in order to ensure the voltage stability during the mode switching process, thereby avoiding abnormal display problems of the display module 20 caused by the synchronous switching of voltage and mode.

[0064] For the control method of the display module 20 provided in the embodiments of the present application, on the one hand, in the low-load driving mode of the display module 20, the external power supply 103 of the power driving device 10 supplies power to the functional module 102, reducing the load inside the driving device, thereby avoiding the voltage drop caused by line loss. At the same time, there is no need to go through the LDO efficiency loss, achieving the purpose of reducing power consumption. On the other hand, in the high-load driving mode of the display module 20, the internal power supply 101 of the power driving device 10 supplies power to the functional module 102, which can effectively compensate for the voltage drop caused by the line under high-load conditions, ensuring the normal operation of the circuit under high-load conditions.

[0065] In another embodiment of the present application, a computer device 700 is further provided. The computer device 700 includes a central processing unit (CPU) 701, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 702 or the program loaded from the storage section 708 into the random access memory (RAM) 703. In the random access memory (RAM) 703, various programs and data required for the operation instructions of the system are also stored. The central processing unit (CPU) 701, the read-only memory (ROM) 702, and the random access memory (RAM) 703 are connected to each other through a bus 704. The input / output (I / O) interface 705 is also connected to the bus 704.

[0066] The following components are connected to the input / output (I / O) interface 705: an input section 706 including a keyboard, a mouse, etc.; an output section 707 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 708 including a hard disk, etc.; and a communication section 709 including a network interface card such as a LAN card, a modem, etc. The communication section 709 performs communication processing via a network such as the Internet. The driver 710 is also connected to the input / output (I / O) interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the driver 710 as needed, so that the computer program read from it can be installed into the storage section 708 as needed.

[0067] Specifically, according to the embodiments of the present application, with reference to the above flowchart Figure 5The described process can be implemented as a computer software program. For example, embodiments of the present application include a computer program product that includes a computer program carried on a computer-readable medium, and the computer program includes program code for performing the method shown in the flowchart. In such an embodiment, the computer program includes program code for performing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 709, and / or installed from a removable medium 711. When the computer program is executed by a central processing unit (CPU) 701, the above-described functions defined in the system of the present application are performed.

[0068] It should be noted that the computer-readable medium shown in the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of a computer-readable storage medium can include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. And in the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium that matches a computer-readable storage medium and can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0069] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operation instructions of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a portion of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two connected blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operation instructions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0070] The units or modules involved in the embodiments described in the present application can be implemented in software or in hardware. The described units or modules can also be provided in a processor. For example, it can be described as: a processor includes a semantic extraction unit, a weight assignment unit, and a determination unit. Among them, the names of these units or modules do not constitute a limitation to the units or modules themselves in some cases.

[0071] On the other hand, the present application also provides a computer-readable storage medium, which can be included in the computer device described in the above embodiments, or can exist separately without being assembled into the computer device. The above computer-readable storage medium stores one or more programs, and when the above programs are executed by one or more processors, the methods described in the present application are performed. For example, it can execute Figure 5 each step of the method shown.

[0072] The embodiments of the present application provide a computer program product, which includes instructions that, when run, cause the methods described in the embodiments of the present application to be executed. For example, it can execute Figure 5 each step of the method shown.

[0073] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by mutually replacing the above features with technical features having similar functions (but not limited to) disclosed in the present application.

Claims

1. A power driving device, characterized in that, Comprising at least one built-in power supply and at least one functional module; the functional module is used for outputting a control timing signal; The power driving device is configured to, in a first driving mode of the load of the power driving device, supply power to the functional module by using the built-in power supply, so that the power driving device supplies power to the load under the drive of the control timing signal; The power driving device is further configured to, in a second driving mode of the load, supply power to the functional module by using an external power supply, so that the power driving device supplies power to the load under the drive of the control timing signal; the output voltage of the power driving device to the load in the first driving mode is greater than the output voltage of the power driving device to the load in the second driving mode.

2. The power driving device according to claim 1, wherein, The power driving device further includes a voltage regulation module, and the voltage regulation module is respectively connected to the output end of the built-in power supply and the functional module, The voltage regulation module is configured to adjust the voltage value input from the output end of the built-in power supply to the functional module based on the output voltage value of the external power supply.

3. The power driving device according to claim 2, wherein The step of supplying power to the functional module by using the built-in power supply in the first driving mode of the load of the power driving device includes: In the first driving mode, the voltage regulation module adjusts the voltage value output by the built-in power supply to a target voltage value greater than the output voltage of the external power supply.

4. The power driving device according to claim 2, characterized in that, The step of supplying power to the functional module by using an external power supply in the second driving mode of the load includes: In the second driving mode, the voltage regulation module adjusts the voltage value output by the built-in power supply to a target voltage value less than the output voltage of the external power supply.

5. The power driving device according to claim 3 or 4, characterized in that, The voltage regulation module includes a register; The power driving device is further configured to write a target voltage value to the register based on the output voltage value of the external power supply; The power driving device is further configured to read the target voltage value from the register and adjust the output voltage of the built-in power supply to the target voltage value.

6. The power driving device according to any one of claims 1-5, characterized in that, The functional module includes a logic sub-module and a storage sub-module, and the input ends of the logic sub-module and the storage sub-module are respectively connected to the output end of the built-in power supply and the output end of the external power supply; The logic sub-module is configured to generate a control timing signal of the power driving device; The storage sub-module is configured to cache the output data of the power driving device and read the output data based on the control timing signal.

7. The power driving device according to claim 6, characterized in that, The input voltage value of the logic sub-module is less than the input voltage value of the storage sub-module.

8. The power driving device according to any one of claims 1-7, characterized in that, The load is a display device, and the refresh frequency of the display device in the first driving mode is greater than the refresh frequency of the display device in the second driving mode.

9. A display module, characterized in that, Comprising the power driving device according to any one of claims 1-8 and a display device, and the power driving device is configured to supply power to the display device.

10. A control method for a display module, characterized in that, The method includes: Determine the display mode of the display module, determine the driving mode of the display module based on the display mode, and determine the driving mode of the power driving device based on the driving mode of the display module; the driving mode of the power driving device includes internal power driving based on the power driving device or external voltage driving based on the power driving device; Adjust the driving voltage of the power driving device to the display module based on the driving mode of the power driving device.

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