Display driving device, display driving method and display device

Abstract

The embodiment of the invention provides a display driving device, a display driving method and a display device.The display driving device is characterized by comprising a main control unit and a driving unit; the main control unit is configured to output display control signals to the driving unit, and the display control signals comprise control signals of a plurality of display frames; the detection module is further configured to continuously detect a display interval of the current display frame, and the display interval comprises a display active interval and a display blank interval; the detection unit is also configured to transmit a first instruction to the driving unit when detecting that the current display frame enters the display blank interval; and the driving unit is configured to output a display data signal corresponding to the display control signal to the display panel in the display active interval and close the signal receiving module and the output voltage stabilizing module after receiving the first instruction. According to the embodiment of the invention, the signal receiving module and the output voltage stabilizing module in the driving unit are closed in the display blank interval, so that the power consumption of the display driving device can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of display devices, and in particular, to a display driving device, a display driving method, and a display device. Background Art

[0002] The working energy efficiency of display devices has always been an important parameter that technicians have been committed to improving. Especially for display screens on mobile terminals, reducing their working power consumption without affecting the display effect can effectively improve the battery life of mobile terminals and alleviate the heating problem of mobile terminals to a certain extent. At present, in order to enhance consumers' terminal usage experience, the display screens of mobile terminals, including mobile phones, are getting larger and larger, and the display resolution and display brightness are getting higher and higher, which will also greatly increase the power consumption of display devices. Therefore, how to improve the working energy efficiency of display devices is an important problem that technicians need to solve urgently.

[0003] It should be noted that the information distinguishing the invention in the above background technology is only configured to enhance the understanding of the background of the invention, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0004] The embodiments of the present application provide a display driving device, a display driving method and a display device, which are intended to detect the display interval through a main control unit, control the signal receiving module and the output voltage stabilizing module in the driving unit to be turned off during the display blank interval, and reduce the working power consumption of the display driving device without affecting the working timing and display effect of the display frame of the display device, thereby helping to improve the working energy efficiency of the display device.

[0005] In one aspect, an embodiment of the present application provides a display driving device, comprising: a main control unit and a driving unit that establish a signal connection; the driving unit comprises: a signal receiving module and an output voltage stabilizing module;

[0006] The main control unit is configured to output a display control signal to the driving unit, wherein the display control signal includes control signals of multiple display frames;

[0007] The main control unit is further configured to continuously detect a display interval of a current display frame, wherein the display interval includes: a display active interval and a display blank interval;

[0008] The main control unit is further configured to transmit a first instruction to the driving unit when detecting that the current display frame enters the display blank interval;

[0009] The driving unit is configured to output a display data signal corresponding to the display control signal to the display panel in the display active interval, and after receiving the first instruction, turn off the signal receiving module and the output voltage stabilizing module;

[0010] The signal receiving module is configured to receive the display control signal, and the output voltage stabilizing module is configured to perform voltage stabilization processing on the display data signal.

[0011] Optionally, the main control unit includes: a first pin, and the driving unit includes: a second pin; the first pin and the second pin establish a signal connection;

[0012] The main control unit is further configured to output the display control signal to the second pin through the first pin.

[0013] Optionally, the main control unit includes: a third pin, and the driving unit includes: a fourth pin; the third pin establishes a signal connection with the fourth pin;

[0014] The main control unit is further configured to control the third pin to switch from a high level state to a low level state when detecting that the current display frame enters the display blank interval, and transmit the first instruction to the fourth pin through the third pin.

[0015] Optionally, the main control unit includes: a frame counter and an instruction transmission module; the instruction transmission module establishes a signal connection with the third pin;

[0016] The frame counter is configured to distinguish the display active interval from the display blank interval, generate a second instruction when the display active interval ends, and send the second instruction to the instruction transmission module when entering the display blank interval;

[0017] The instruction transmission module is configured to transmit the first instruction to the third pin after receiving the second instruction.

[0018] Optionally, the main control unit is further configured to shut down the instruction transmission module after the instruction transmission module transmits the first instruction to the third pin.

[0019] Optionally, the frame counter is further configured to detect a display refresh rate of a current display frame;

[0020] The main control unit is further configured to transmit the first instruction to the driving unit when the display refresh rate of the current display frame is lower than a preset display refresh rate threshold and it is detected that the current display frame enters the display blank interval.

[0021] Optionally, the preset display refresh rate threshold is equal to one quarter of a preset maximum display refresh rate of a display frame of the display driving device.

[0022] Optionally, it also includes: a power management unit and a GOA unit;

[0023] The main control unit is further configured to transmit a third instruction to the power management unit when detecting that the current display frame enters the display blank interval;

[0024] The power management unit is configured to output an operating voltage to the driving unit and the GOA unit, and after receiving the third instruction, reduce a switching frequency of the operating voltage from a first preset frequency to a second preset frequency.

[0025] The operating voltage may specifically include an AVDD voltage signal, an AVEE voltage signal, a VGH voltage signal and a VGL voltage signal.

[0026] Optionally, the second preset frequency is less than or equal to half of the first preset frequency.

[0027] Optionally, the main control unit is further configured to transmit a fourth instruction to the driving unit when detecting that the current display frame enters the display active interval;

[0028] The driving unit is further configured to turn on the signal receiving module and the output voltage stabilizing module after receiving the fourth instruction.

[0029] Optionally, the main control unit is further configured to ground the display control signal when detecting that the current display frame enters the display blank interval;

[0030] The driving unit is further configured to ground the display data signal after receiving the first instruction.

[0031] Compared with the prior art, the advantages of the embodiments of the present application are:

[0032] Through the above-mentioned embodiments, the display driving device provided by the present application utilizes the main control unit to detect the display interval, and controls the signal receiving module and the output voltage stabilizing module in the driving unit to be turned off during the display blank interval. Since the power on and off of the signal receiving module and the output voltage stabilizing module in the driving unit do not affect the working timing of the display data, the normal refresh of the display frame on the display panel can be guaranteed. Therefore, the embodiments of the present application reduce the working power consumption of the display driving device without affecting the working timing and display effect of the display frame of the display device, thereby helping to improve the working energy efficiency of the display device.

[0033] In another aspect, an embodiment of the present application further provides a display driving method, which is applied to the display driving device in the above embodiment, comprising:

[0034] The main control unit continuously detects the display interval of the current display frame, and transmits the first instruction to the driving unit when detecting that the current display frame enters the display blank interval;

[0035] After receiving the first instruction, the driving unit turns off the signal receiving module and the output voltage stabilizing module.

[0036] Compared with the prior art, the advantages of the embodiments of the present application are:

[0037] The display driving method provided in the embodiment of the present application is applied to the display driving device in the above embodiment, and also has all the advantages of the above display driving device.

[0038] On the other hand, an embodiment of the present application further provides a display device, including a display panel and the display driving device in the above embodiment.

[0039] Compared with the prior art, the advantages of the embodiments of the present application are:

[0040] The display device provided in the embodiment of the present application includes the display driving device in the above embodiment, and also has all the advantages of the above display driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are for reference and illustration only and are not intended to limit the scope of protection of this application. The technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] Figure 1 A structural block diagram of a display driving device in an embodiment provided by the present application is shown;

[0043] Figure 2 A structural block diagram of another display driving device in an embodiment provided by the present application is shown;

[0044] Figure 3 A structural block diagram of another display driving device in an embodiment provided by the present application is shown;

[0045] Figure 4 A structural block diagram of a main control unit in an embodiment provided by the present application is shown;

[0046] Figure 5 A flowchart of the steps of a display driving method in an embodiment provided by the present application is shown.

[0047] Reference numerals:

[0048] 100-display driving device; 110-main control unit; 120-driving unit; 140-power management unit; 150-GOA unit; 111-frame counter; 112-command transmission module; 121-signal receiving module; 122-output voltage stabilizing module; 131-first pin; 132-second pin; 133-third pin; 134-fourth pin. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0050] The inventors found that in the display device provided by the related art, a non-luminous display blank interval is provided in each display frame as a transition stage between adjacent display frames. In order to maintain the working timing of the display driver, it is often necessary to continuously output the display data signal in the display blank interval so that the display panel displays a non-luminous picture. Therefore, in the current display device, the display driver still continuously transmits the signal, and the display panel still remains powered in the display blank interval, which means that there is unnecessary charge load and power consumption.

[0051] At present, the relevant technology has introduced a display screen with a variable display refresh rate, so that the display screen can be manually switched by the user or automatically changed to a suitable display refresh rate according to the use scenario of the electronic device, so as to reduce the display refresh rate in a static display state, thereby reducing the power consumption of the display device. Taking the low-temperature polycrystalline oxide (LTPO) display as an example, it is possible to switch between multiple display refresh rates from 1Hz to 144Hz. The inventors also found that since the duration of the active display interval is relatively constant, the lower the display refresh rate, the fewer the number of display frames per second, and the longer the display blank interval. Therefore, under the low refresh rate state, the energy waste of the display blank interval is more significant.

[0052] In view of the analysis of the above-mentioned problems, the embodiments of the present application provide a display driving device, a display driving method and a display device, which are intended to detect the display interval through a main control unit, and control the signal receiving module and the output voltage stabilizing module in the driving unit to be turned off during the display blank interval. Since the power on and off of the signal receiving module and the output voltage stabilizing module in the driving unit do not affect the working timing of the display data, the normal refresh of the display frame on the display panel can be guaranteed. Therefore, the embodiments of the present application reduce the working power consumption of the display driving device without affecting the working timing and display effect of the display frame of the display device, thereby improving the working energy efficiency of the display device.

[0053] The embodiments of the present application are described below with reference to the accompanying drawings.

[0054] Reference Figure 1 , Figure 1 FIG. 1 is a block diagram showing a display driving device 100 in an embodiment provided by the present application. Figure 1 As shown, an embodiment of the present application provides a display driving device 100, including: a main control unit 110 and a driving unit 120 that establish a signal connection.

[0055] The driving unit 120 includes: a signal receiving module 121 and an output voltage stabilizing module 122 .

[0056] The main control unit 110 may include a Tcon board, and the driving unit 120 may include a driver chip (Driver).

[0057] The main control unit 110 may include: a control signal transmission module, a frame counter 111 and an instruction transmission module 112 .

[0058] The main control unit 110 is configured to output a display control signal to the driving unit 120, wherein the display control signal includes a plurality of display frame control signals, which can be specifically executed by a control signal transmission module.

[0059] The main control unit 110 may also transmit an STV signal to the gate of the display panel to implement progressive scanning.

[0060] The main control unit 110 is further configured to continuously detect the display interval of the current display frame, where the display interval includes: a display active interval and a display blank interval, which can be specifically performed by the frame counter 111 .

[0061] The main control unit 110 is further configured to transmit a first instruction to the driving unit 120 when detecting that the current display frame enters a display blank interval. The instruction transmission module 112 may perform the execution of the first instruction.

[0062] The driving unit 120 is configured to output a display data signal corresponding to the display control signal to the display panel in the display active interval, and turn off the signal receiving module 121 and the output voltage stabilizing module 122 after receiving the first instruction.

[0063] The driving unit 120 may further include:

[0064] The data signal output module is configured to output a display data signal corresponding to the display control signal to the display panel in a display active interval.

[0065] The instruction response module is configured to shut down the signal receiving module 121 and the output voltage stabilizing module 122 after receiving the first instruction.

[0066] The signal receiving module 121 is configured to receive a display control signal, and the output voltage stabilizing module 122 is configured to perform voltage stabilization processing on a display data signal.

[0067] Specifically, the signal receiving module 121, namely the RX module, and the output voltage regulating module 122, namely the OP module, both stop working in the display blank interval. On the one hand, they can be quickly started before the display active interval, and on the other hand, they operate independently of the timing of the display data signal. When they are shut down in the display blank interval, the working timing of the display data signal can be not affected.

[0068] Through the above embodiments, the display driving device 100 provided by the present application utilizes the main control unit 110 to detect the display interval, and controls the signal receiving module 121 and the output voltage stabilizing module 122 in the driving unit 120 to be turned off during the display blank interval. Since the power on and off of the signal receiving module 121 and the output voltage stabilizing module 122 in the driving unit 120 do not affect the working timing of the display data, the normal refresh of the display frame on the display panel can be guaranteed. Therefore, the embodiment of the present application reduces the working power consumption of the display driving device 100 without affecting the working timing and display effect of the display frame of the display device, thereby improving the working energy efficiency of the display device.

[0069] Reference Figure 2 , Figure 2 FIG. 2 shows a structural block diagram of another display driving device 100 in an embodiment provided by the present application. Figure 2 As shown, the display control signal can be transmitted based on a point-to-point differential protocol. Figure 2 , Figure 2 FIG. 2 shows a structural block diagram of another display driving device 100 in an embodiment provided by the present application. Figure 2As shown, for this purpose, in an optional implementation, the present application also provides a display driving device 100, wherein the main control unit 110 includes: a first pin 131, and the driving unit 120 includes: a second pin 132; the first pin 131 establishes a signal connection with the second pin 132.

[0070] The main control unit 110 is further configured to output a display control signal to the second pin 132 via the first pin 131 .

[0071] In some optional embodiments, the display control signal may be a point-to-point differential signal.

[0072] Specifically, the first pin 131 may be a general-purpose output pin (GPO), and the second pin 132 may be a general-purpose input pin (GPI).

[0073] The first instruction may also be transmitted based on a point-to-point differential protocol.

[0074] In an optional implementation, the display control signal and the first instruction can be transmitted based on the same group of signal-connected pins in the main control unit 110 and the driving unit 120. To this end, in an optional implementation, the main control unit 110 is further configured to control the first pin 131 to switch from a high level state to a low level state when detecting that the current display frame enters a display blank interval, and output the first instruction to the second pin 132 through the first pin 131.

[0075] In another optional embodiment, the display control signal and the first instruction can be transmitted based on different pins in the main control unit 110 and the driving unit 120. To this end, in another optional embodiment, the main control unit 110 includes: a third pin 133. The driving unit 120 includes: a fourth pin 134. The third pin 133 establishes a signal connection with the fourth pin 134.

[0076] The main control unit 110 is further configured to control the third pin 133 to switch from a high level state to a low level state when detecting that the current display frame enters a display blank interval, and transmit the first instruction to the fourth pin 134 through the third pin 133 .

[0077] In some optional embodiments, the first instruction may be a point-to-point differential signal.

[0078] Reference Figure 4 , Figure 4 FIG. 1 shows a structural block diagram of a main control unit 110 in an embodiment provided by the present application. Figure 4As shown, the embodiment of the present application can use the frame counter 111 to distinguish between the display active interval and the display blank interval, and the corresponding instruction transmission module 112 responds to the interval to realize the transmission of the first instruction. To this end, in an optional embodiment, the present application also provides a main control unit 110, including: a frame counter 111 and an instruction transmission module 112; the instruction transmission module 112 establishes a signal connection with the third pin 133.

[0079] The frame counter 111 is configured to distinguish between a display active interval and a display blank interval, and to generate a second instruction when the display active interval ends, and to send the second instruction to the instruction transmission module 112 when entering the display blank interval.

[0080] The instruction transmission module 112 is configured to transmit the first instruction to the third pin 133 after receiving the second instruction.

[0081] Specifically, by setting the level state of the first pin 131 or the second pin 132 to a high level or a low level, the transmission of a signal or an instruction can be achieved, and the turning on or off of a functional module can also be achieved.

[0082] Considering that the sending of the first instruction is newly added in the embodiment of the present application, which will also generate certain power consumption, it can be considered to turn off the corresponding instruction transmission module 112 after completing the sending of the first instruction, so as to further reduce the power consumption of the display driver 100. To this end, in an optional implementation, the main control unit 110 is further configured to turn off the instruction transmission module 112 after the instruction transmission module 112 transmits the first instruction to the third pin 133.

[0083] Specifically, the main control unit 110 may further include a start-stop module. After the instruction transmission module 112 transmits the first instruction to the third pin 133 , it may transmit the first shutdown instruction to the start-stop module.

[0084] The start-stop module is configured to close the instruction transmission module 112 after receiving the first shutdown instruction.

[0085] Since the duration of the display active interval is relatively constant, the lower the display refresh rate, the fewer the number of display frames per second, and the longer the display blank interval, the more significant the effect of turning off the signal receiving module 121 and the output voltage stabilizing module 122 and other components in the drive unit 120 during the display blank interval on saving power consumption. It can be considered to adjust for scenes with low display refresh rates to avoid the display effect of the display device being affected to a greater extent. To this end, in an optional embodiment, the present application also provides a main control unit 110, wherein the frame counter 111 is also configured to detect the display refresh rate of the current display frame.

[0086] The main control unit 110 is further configured to transmit a first instruction to the driving unit 120 when the display refresh rate of the current display frame is lower than a preset display refresh rate threshold and it is detected that the current display frame enters a display blank interval.

[0087] Specifically, the preset display refresh rate threshold may be set according to the preset maximum display refresh rate of the display frame of the display driver 100. In an optional implementation, the preset display refresh rate threshold is equal to one quarter of the preset maximum display refresh rate of the display frame of the display driver 100.

[0088] For example, when the preset maximum display refresh rate of the display frame of the display driver 100 is 120 Hz, the preset display refresh rate threshold may be 30 Hz. That is, when the display refresh rate of the current display frame is lower than 30 Hz, a low power consumption solution may be executed, and when it is detected that the current display frame enters a display blanking interval, a first instruction is transmitted to the driver unit 120 to shut down the signal receiving module 121 and the output voltage stabilizing module 122 in the driver unit 120.

[0089] Reference Figure 3 , Figure 3 FIG. 2 shows a structural block diagram of another display driving device 100 in an embodiment provided by the present application. Figure 3 As shown, the present application also considers reducing the power consumption of the power supply that provides the working voltage for the driving unit 120 and the GOA circuit. To this end, in an optional implementation, the present application also provides a display driving device 100, further comprising: a power management unit 140 and a GOA unit 150.

[0090] The power management unit 140 may include a power management chip PMIC. The GOA unit 150 may include a GOA circuit, that is, an integrated gate drive circuit.

[0091] The main control unit 110 is further configured to transmit a third instruction to the power management unit 140 when detecting that the current display frame enters a display blank interval. The third instruction may be specifically executed by the instruction transmission module 112 .

[0092] The power management unit 140 is configured to output the operating voltage to the driving unit 120 and the GOA unit 150, and after receiving the third instruction, reduce the switching frequency of the operating voltage from the first preset frequency to the second preset frequency.

[0093] Among them, the switching frequency of the working voltage is the voltage LX frequency.

[0094] In an optional implementation, the second preset frequency is less than or equal to half of the first preset frequency.

[0095] In yet another optional implementation, the second preset frequency may be a minimum voltage LX frequency of the power management unit 140 .

[0096] Specifically, the second preset frequency may be 600 KHz, and the first preset frequency may be 1200 KHz.

[0097] Through the above embodiments, considering that the power management unit 140 still needs to supply power to other units or modules that are not turned off during the display blank interval, the voltage cannot be easily changed, but considering that the LX frequency of the working voltage involves the power consumption of the high-frequency switch, the display panel can be used to display a blank screen, that is, a black screen during the display blank interval, and the output end of the driving unit 120 can be grounded, and powered by a lower voltage LX frequency, thereby reducing the power consumption of the voltage switch of the power management unit 140 itself during the display blank interval, and then reducing the power consumption of the display device.

[0098] As the display frame is continuously refreshed, the display interval also periodically alternates between the display active interval and the display blank interval, and the display device needs to restore the normal working state in the display active interval. To this end, in an optional embodiment, the present application also provides a display driver device 100, wherein the main control unit 110 is further configured to transmit a fourth instruction to the driver unit 120 when detecting that the current display frame enters the display active interval.

[0099] Specifically, the frame counter 111 may transmit the fourth instruction to the driving unit 120 when detecting that the current display frame enters the display active interval.

[0100] The driving unit 120 is further configured to turn on the signal receiving module 121 and the output voltage stabilizing module 122 after receiving the fourth instruction.

[0101] In the above embodiments, various measures for reducing power consumption are also proposed, and the embodiments of the present application can also perform recovery based on the above measures.

[0102] The embodiment of the present application may also transmit an instruction to the power management unit 140 before ending the display active interval to restore the switching frequency of the working voltage output by the power management unit 140 to the driving unit 120 and the GOA unit 150 to the first preset frequency.

[0103] In the embodiment of the present application, the instruction transmission module 112 may also be turned on before the display active interval ends.

[0104] The embodiment of the present application can also keep the signal receiving module 121 and the output voltage stabilizing module 122 turned on in the display interval when it is detected that the display refresh rate is higher than a preset display refresh rate threshold.

[0105] In the display interval, the display control signal and the data signal are continuously output. Even if the display panel displays a blank screen in the display blank interval, considering the loss of components such as capacitors in the circuit, an operating voltage will be generated. Even if the operating voltage is lower than that in the display active interval, a certain amount of power consumption is generated. In order to further reduce the power consumption of the display device, in an optional embodiment, the present application also provides a main control unit 110, which is also configured to ground the display control signal when it is detected that the current display frame enters the display blank interval.

[0106] The driving unit 120 is further configured to ground the display data signal after receiving the first instruction.

[0107] For example, in a display device provided by a related art, the display control signal and the data signal are continuously output during the display blank interval, and the working end still has a voltage of 0.3V, that is, power consumption is still generated during the display blank interval. In the display driving device 100 provided in the embodiment of the present application, the display control signal and the data signal are grounded to 0V, which further reduces the power consumption of the display device.

[0108] Reference Figure 5 , Figure 5 FIG. 1 is a flowchart showing a display driving method in an embodiment of the present application. Figure 5 As shown, based on the same inventive concept, the embodiment of the present application further provides a display driving method, which is applied to the display driving device 100 in the above embodiment, and the method includes:

[0109] In step S601 , the main control unit 110 continuously detects the display interval of the current display frame, and transmits a first instruction to the driving unit 120 when detecting that the current display frame enters a display blank interval.

[0110] Step S602 : after receiving the first instruction, the driving unit 120 turns off the signal receiving module 121 and the output voltage stabilizing module 122 .

[0111] Based on the same inventive concept, an embodiment of the present application further provides a display device, including a display panel and the display driving device in the above embodiment.

[0112] Preferably, the display panel may include an OLED display panel.

[0113] Specifically, the display device may include products such as display modules, smart watches, mobile phones, tablet computers, display screens of VR devices, or computer monitors.

[0114] Based on the same inventive concept, an embodiment of the present application further provides a display device, which includes the display apparatus in the above embodiment.

[0115] As for the method embodiments or product embodiments, since they are basically similar to the device embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the device embodiments.

[0116] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0117] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, devices, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0118] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0119] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0120] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable terminal device. Figure 1 A process or multiple processes and / or boxes Figure 1The steps for the functions specified in one or more boxes.

[0121] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0122] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0123] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

Claims

1. A display driving device, characterized in that: include: Establish signal connection between the main control unit and the drive unit; The driving unit comprises: a signal receiving module and an output voltage stabilizing module; The main control unit is configured to output a display control signal to the driving unit, wherein the display control signal includes control signals of multiple display frames; The main control unit is further configured to continuously detect a display interval of a current display frame, wherein the display interval includes: a display active interval and a display blank interval; The main control unit is further configured to transmit a first instruction to the driving unit when detecting that the current display frame enters the display blank interval; The driving unit is configured to output a display data signal corresponding to the display control signal to the display panel in the display active interval, and after receiving the first instruction, turn off the signal receiving module and the output voltage stabilizing module; The signal receiving module is configured to receive the display control signal, and the output voltage stabilizing module is configured to perform voltage stabilization processing on the display data signal.

2. The display driving device according to claim 1, characterized in that: The main control unit includes: a first pin, and the driving unit includes: a second pin; the first pin establishes a signal connection with the second pin; The main control unit is further configured to output the display control signal to the second pin through the first pin.

3. The display driving device according to claim 1, characterized in that: The main control unit includes: a third pin, and the driving unit includes: a fourth pin; the third pin establishes a signal connection with the fourth pin; The main control unit is further configured to control the third pin to switch from a high level state to a low level state when detecting that the current display frame enters the display blank interval, and transmit the first instruction to the fourth pin through the third pin.

4. The display driving device according to claim 3, characterized in that: The main control unit includes: a frame counter and an instruction transmission module; the instruction transmission module establishes a signal connection with the third pin; The frame counter is configured to distinguish the display active interval from the display blank interval, generate a second instruction when the display active interval ends, and send the second instruction to the instruction transmission module when entering the display blank interval; The instruction transmission module is configured to transmit the first instruction to the third pin after receiving the second instruction.

5. The display driving device according to claim 4, characterized in that: The main control unit is further configured to close the instruction transmission module after the instruction transmission module transmits the first instruction to the third pin.

6. The display driving device according to claim 1, characterized in that: The frame counter is further configured to detect a display refresh rate of a current display frame; The main control unit is further configured to transmit the first instruction to the driving unit when the display refresh rate of the current display frame is lower than a preset display refresh rate threshold and it is detected that the current display frame enters the display blank interval.

7. The display driving device according to claim 6, characterized in that: The preset display refresh rate threshold is equal to one quarter of a preset maximum display refresh rate of a display frame of the display driving device.

8. The display driving device according to claim 1, characterized in that: Also includes: Power management unit and GOA unit; The main control unit is further configured to transmit a third instruction to the power management unit when detecting that the current display frame enters the display blank interval; The power management unit is configured to output an operating voltage to the driving unit and the GOA unit, and after receiving the third instruction, reduce a switching frequency of the operating voltage from a first preset frequency to a second preset frequency.

9. The display driving device according to claim 8, characterized in that: The second preset frequency is less than or equal to half of the first preset frequency.

10. The display driving device according to claim 1, characterized in that: The main control unit is further configured to transmit a fourth instruction to the driving unit when detecting that the current display frame enters the display active interval; The driving unit is further configured to turn on the signal receiving module and the output voltage stabilizing module after receiving the fourth instruction.

11. The display driving device according to any one of claims 1 to 10, characterized in that: The main control unit is further configured to ground the display control signal when detecting that the current display frame enters the display blank interval; The driving unit is further configured to ground the display data signal after receiving the first instruction.

12. A display driving method, characterized in that: The display driving device according to any one of claims 1 to 11, comprising: The main control unit continuously detects the display interval of the current display frame, and transmits the first instruction to the driving unit when detecting that the current display frame enters the display blank interval; After receiving the first instruction, the driving unit turns off the signal receiving module and the output voltage stabilizing module.

13. A display device, comprising: A display panel and a display driving device as claimed in any one of claims 1 to 11.

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