Display driving system, method, apparatus and storage medium

Abstract

Embodiments of the present disclosure provide a display driving system, method, device and storage medium, relating to the technical field of display, and are used for solving the problem that screen flashing may occur in a display panel. The display driving system comprises a signal compensation module, and a signal receiving module and a signal output module connected with the signal compensation module. The signal compensation module comprises a first compensation unit and a second compensation unit; the signal receiving module receives a driving signal used for driving the display panel to display an image; the signal compensation module generates a first ESTV compensation signal through the first compensation unit and generates an ESTV period signal through the second compensation unit based on the driving signal, and synthesizes the ESTV period signal and the first ESTV compensation signal into an ESTV signal, and a display interval of the first ESTV compensation signal is consistent with a display interval of the ESTV period signal; and the signal output module outputs the ESTV signal to the display panel to drive the display panel to display the image.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display driving system, method, device and storage medium. Background Art

[0002] Organic light emitting diode (OLED) displays present different grayscale levels by controlling the light intensity of pixels. When displaying low grayscale, uneven brightness may occur, affecting display quality.

[0003] In related technologies, a solution has been proposed to address uneven display brightness at low grayscale levels by performing special processing on the electronic source timing voltage (ESTV) signal. This solution sets a voltage pre-processing period at the beginning of each frame. During this period, voltage compensation is performed based on the characteristics of each pixel circuit, minimizing differences between different pixel circuits and achieving more precise grayscale control and more uniform display brightness.

[0004] However, since the set pre-processing time period is inconsistent with the cycle length of other ESTV signals in a frame, the pixel circuit's response time to the ESTV signal becomes longer, which in turn causes the ESTV signal to fail to match the display frequency in time when the display content changes frequency, causing the display panel to flicker. Summary of the Invention

[0005] The purpose of the embodiments of the present disclosure is to provide a display driving system, method, device and storage medium for solving the problem of screen flickering of a display panel when the display content changes frequency.

[0006] To achieve the above objectives, the embodiments of the present disclosure provide the following technical solutions:

[0007] In one aspect, a display driving system is provided. The display driving system includes: a signal receiving module, a signal compensation module, and a signal output module. The signal receiving module is connected to the signal output module via the signal compensation module, and the signal compensation module includes a first compensation unit and a second compensation unit. The signal receiving module is configured to receive a driving signal, where the driving signal is used to drive a display panel to display an image. The signal compensation module is configured to generate a first ESTV compensation signal via the first compensation unit and an ESTV periodic signal via the second compensation unit based on the driving signal, and to combine the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal, where the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal. The signal output module is configured to output the ESTV signal to the display panel to drive the display panel to display an image.

[0008] In view of this, the screen flicker phenomenon of the display panel is caused by the inconsistency between the pre-processing time period of the voltage and the cycle length of other ESTV signals within a frame. Therefore, the display drive system in the present application accurately processes the drive signal by introducing a signal compensation module including a first compensation unit and a second compensation unit, so as to generate a first ESTV compensation signal through the first compensation unit and an ESTV periodic signal through the second compensation unit, so that the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, thereby ensuring the periodic consistency of the ESTV signal within a frame and reducing the screen flicker phenomenon caused by signal mutation and mismatch; further, by synthesizing the first ESTV compensation signal and the ESTV periodic signal into an overall ESTV signal output, the output ESTV signal is smoother and more stable, thereby reducing the screen flicker phenomenon caused by signal fluctuations.

[0009] In some embodiments, the signal compensation module in the display drive system provided in the embodiment of the present application is specifically configured to: when the duration of the driving signal received by the signal receiving module is greater than or equal to the minimum cycle duration of the ESTV signal, based on the driving signal, generate a first ESTV compensation signal through the first compensation unit, and generate an ESTV periodic signal through the second compensation unit. The ESTV signal includes multiple cycles, the first ESTV compensation signal is a signal before the ESTV periodic signal, and the first ESTV compensation signal and the ESTV periodic signal are signals within the same frame.

[0010] Based on the above technical solution, since it is necessary to ensure that the display interval of the first ESTV compensation signal within a frame is consistent with the display interval of the ESTV periodic signal, before generating the first ESTV compensation signal and the ESTV periodic signal, it is necessary to ensure that the data of the received driving signal contains the data of a complete cycle of the ESTV signal, so that the first ESTV compensation signal and the ESTV periodic signal with consistent display intervals can be generated in combination with the cycle of the ESTV signal.

[0011] In some embodiments, the signal compensation module in the display driving system provided in the embodiments of the present application is specifically configured to: control the first compensation unit to generate a first ESTV compensation signal based on the driving signal; and control the second compensation unit to generate an ESTV periodic signal based on the display interval of the first ESTV compensation signal.

[0012] Based on the above technical solution, the embodiment of the present application first generates a first ESTV compensation signal for adjusting the display period of the driving signal according to the period duration in the driving signal, and further generates an ESTV period signal with consistent display interval according to the duration to achieve the purpose of completely consistent periods, thereby ensuring that the display interval when displaying the image is consistent with the display interval when the compensation signal is used, thereby avoiding screen flickering.

[0013] In certain embodiments, the signal compensation module in the display drive system that the embodiment of the present application provides, is specifically configured to: when driving signal is inconsistent with desired signal, based on driving signal and desired signal, determine the second ESTV compensation signal, and ESTV periodic signal, the first ESTV compensation signal and the second ESTV compensation signal are synthesized into ESTV signal.Desired signal is required driving signal when display panel normally displays.The display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, and the second ESTV compensation signal is the signal after the ESTV periodic signal.The second ESTV compensation signal and the ESTV periodic signal are the signals in the same frame.

[0014] Based on the above technical solution, since the driving signal that drives the display panel to display an image may have errors, resulting in screen flickering, the present application can also obtain a frequency difference by comparing the driving signal with the expected signal actually required by the display panel, and generate a second ESTV compensation signal based on the frequency difference, and add it to the end of the ESTV periodic signal, thereby ensuring that the output ESTV signal is consistent with the actually required ESTV signal, thereby avoiding the occurrence of screen flickering on the display panel.

[0015] In some embodiments, the signal compensation module in the display drive system provided by the embodiments of the present application is specifically configured to: determine a frequency difference between the drive signal and the desired signal; and determine a second ESTV compensation signal consistent with the frequency difference from a signal buffer. The signal buffer is a buffer in the display drive system that stores at least one frame of ESTV signal.

[0016] Based on the above technical solution, the embodiment of the present application sets up a signal buffer that stores the expected signal actually required by the display panel, so that when the driving signal needs to be compensated later, it can be directly determined from the signal buffer, thereby improving the compensation efficiency of the driving signal and indirectly reducing the screen flicker of the display panel.

[0017] On the other hand, a display driving method is provided, which includes: receiving a driving signal, the driving signal being used to drive a display panel to display an image, generating a first ESTV compensation signal through a first compensation unit based on the driving signal, and generating an ESTV periodic signal through a second compensation unit, and synthesizing the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal, the display interval of the first ESTV compensation signal being consistent with the display interval of the ESTV periodic signal, and outputting the ESTV signal to the display panel to drive the display panel to display an image.

[0018] In some embodiments, the above-mentioned generating a first ESTV compensation signal by the first compensation unit based on the driving signal and generating an ESTV periodic signal by the second compensation unit includes: when the duration of the driving signal received by the signal receiving module is greater than or equal to the minimum period duration of the ESTV signal, generating the first ESTV compensation signal by the first compensation unit based on the driving signal, and generating the ESTV periodic signal by the second compensation unit. The ESTV signal includes multiple cycles, the first ESTV compensation signal is a signal before the ESTV periodic signal, and the first ESTV compensation signal and the ESTV periodic signal are signals within the same frame.

[0019] In some embodiments, the above-mentioned generation of a first ESTV compensation signal by a first compensation unit based on a driving signal, and generation of an ESTV periodic signal by a second compensation unit include: controlling the first compensation unit to generate a first ESTV compensation signal based on the driving signal; controlling the second compensation unit to generate an ESTV periodic signal based on a display interval of the first ESTV compensation signal.

[0020] In certain embodiments, the ESTV periodic signal and the first ESTV compensation signal are synthesized into the ESTV signal, including: when the driving signal is inconsistent with the expected signal, based on the driving signal and the expected signal, determining the second ESTV compensation signal, and synthesizing the ESTV periodic signal, the first ESTV compensation signal and the second ESTV compensation signal into the ESTV signal. The expected signal is the driving signal required when the display panel is normally displayed. The display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, the second ESTV compensation signal is the signal after the ESTV periodic signal, and the second ESTV compensation signal and the ESTV periodic signal are signals in the same frame.

[0021] In some embodiments, determining the second ESTV compensation signal based on the drive signal and the expected signal includes determining a frequency difference between the drive signal and the expected signal, and determining a second ESTV compensation signal consistent with the frequency difference from a signal buffer. The signal buffer is a buffer in the display drive system, and the signal buffer stores at least one frame of the ESTV signal.

[0022] The above display driving method has the same beneficial technical effects as the display driving system provided in the above system embodiment, and will not be described in detail here.

[0023] On the other hand, a display driving device is provided, which includes: a receiving unit, a processing unit and a sending unit; wherein the receiving unit is used to receive a driving signal, and the driving signal is used to drive the display panel to display an image; the processing unit is used to generate a first ESTV compensation signal through a first compensation unit based on the driving signal, and generate an ESTV periodic signal through a second compensation unit, and synthesize the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal, and the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal; the sending unit is used to output the ESTV signal to the display panel to drive the display panel to display an image.

[0024] In some embodiments, the processing unit is specifically configured to generate a first ESTV compensation signal based on the driving signal by the first compensation unit, and generate an ESTV periodic signal by the second compensation unit, when the duration of the driving signal received by the receiving unit is greater than or equal to the minimum period of the ESTV signal. The ESTV signal includes multiple periods, the first ESTV compensation signal is a signal before the ESTV periodic signal, and the first ESTV compensation signal and the ESTV periodic signal are signals within the same frame.

[0025] In some embodiments, the processing unit is specifically configured to: based on the driving signal, control the first compensation unit to generate a first ESTV compensation signal; and control the second compensation unit to generate an ESTV period signal based on a display interval of the first ESTV compensation signal.

[0026] In some embodiments, the processing unit is specifically configured to: in a case where the driving signal is inconsistent with an expected signal, determine a second ESTV compensation signal based on the driving signal and the expected signal, and combine the ESTV period signal, the first ESTV compensation signal and the second ESTV compensation signal into an ESTV signal. The expected signal is a driving signal required when the display panel is normally displayed. The display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV period signal, the second ESTV compensation signal is a signal after the ESTV period signal, and the second ESTV compensation signal and the ESTV period signal are signals in the same frame.

[0027] In some embodiments, the processing unit is specifically configured to: determine a frequency difference between the driving signal and the expected signal, and determine the second ESTV compensation signal consistent with the frequency difference from a signal buffer. The signal buffer is a buffer in the display driving system, and the signal buffer stores at least one frame of ESTV signal.

[0028] In another aspect, a display driving apparatus is provided. The display driving apparatus includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is configured to execute computer programs or instructions to implement the display driving method of any of the above method embodiments.

[0029] In another aspect, a computer readable storage medium is provided. The computer readable storage medium stores computer program instructions. When the computer program instructions are executed on a computer (e.g., a receiving node), the computer program instructions cause the computer to perform the display driving method of any of the above embodiments.

[0030] In another aspect, a computer program product is provided. The computer program product includes computer program instructions. When the computer program instructions are executed on a computer (e.g., a receiving node), the computer program instructions cause the computer to perform the display driving method of any of the above embodiments.

[0031] In another aspect, a computer program is provided. When the computer program is executed on a computer (e.g., a receiving node), the computer program causes the computer to perform the display driving method of any of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0032] To more clearly illustrate the technical solutions of the present disclosure, the following briefly introduces the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure, and those skilled in the art can also derive other drawings based on these drawings. Furthermore, the drawings described below are schematic diagrams and do not limit the actual dimensions of the products, actual processes of the methods, actual timing of signals, etc. involved in the embodiments of the present disclosure.

[0033] Figure 1 A schematic diagram illustrating inconsistent periodicity of an ESTV signal according to some embodiments;

[0034] Figure 2 A schematic diagram of separately generating an ESTV signal according to some embodiments;

[0035] Figure 3 A schematic diagram of a display panel screen flicker mechanism provided according to some embodiments;

[0036] Figure 4 A schematic diagram of another display panel screen flicker mechanism provided according to some embodiments;

[0037] Figure 5 is an architectural diagram of a display driving system provided according to some embodiments;

[0038] Figure 6 is a structural diagram of a display device provided according to some embodiments;

[0039] Figure 7 is a flowchart of a display driving method provided according to some embodiments;

[0040] Figure 8 A schematic diagram of a display interval of an ESTV signal generated by a display driving method according to some embodiments;

[0041] Figure 9 A schematic diagram of generating an ESTV signal applied in a display driving method according to some embodiments;

[0042] Figure 10 A schematic diagram of an ESTV signal generated by a display driving method according to some embodiments;

[0043] Figure 11 is a flow chart of a display driving method provided according to some other embodiments;

[0044] Figure 12 A schematic diagram of an ESTV signal generated by a display driving method according to some other embodiments;

[0045] Figure 13 A structural diagram of a display driving apparatus according to some embodiments;

[0046] Figure 14 A structural diagram of a display driving apparatus according to some embodiments. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present disclosure.

[0048] Unless otherwise required by context, the term "comprise" and other forms of the term "comprise", such as "comprises" and "comprising", and the like, are used in an open, inclusive and non-limiting sense, that is, as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to mean that a specific feature or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. The illustrative representation of the above terms does not necessarily mean the same embodiment or example. In addition, the specific features or characteristics can be included in any one or more embodiments or examples in any appropriate manner.

[0049] Hereinafter, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0050] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", and includes the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0051] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0052] The use of "adapted to" or "configured to" herein means open and inclusive language that does not exclude additional devices or steps not explicitly described.

[0053] In addition, the use of "based on" means open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values can be based on additional conditions or values beyond those stated in practice.

[0054] In the field of OLED display technology, the periodic change of the ESTV signal, which is a key factor for regulating the luminous intensity of pixels, is crucial for ensuring the continuity and stability of the image within a frame display period. The traditional ESTV signal regulation method (such as the Dynamic Mura Reduction (DMR) algorithm) adjusts the pixel brightness in real time to compensate for display unevenness, but this cannot completely eliminate the problem when displaying low gray scale, and there is still a problem of uneven brightness.

[0055] In the related art, a separate time solution is provided, which introduces a preprocessing time at the beginning of each frame display period using firmware (FW) to solve the problem of low gray scale display unevenness and the short-term residual phenomenon that occurs when the screen displays rapidly changing images.

[0056] However, due to the periodicity of the preprocessing time being different from that of other ESTV signals within the frame, for screens with variable refresh rate (VRR), when the display refresh rate changes (i.e. variable frequency operation), the screen may appear a short-term flashing phenomenon.

[0057] Figure 1 The ESTV signal period inconsistency diagram according to some embodiments is provided. Wherein a+b+c is the preprocessing time (a and c are the time corresponding to the low-level signal in the preprocessing time, and b is the time corresponding to the high-level signal in the preprocessing time), e is the emission time, and f is the emission interval time. In the case of a+b+c≠f, the length of a+b+c+e (i.e. X corresponds to the ESTV signal) and the length of e+f (i.e. Y corresponds to the ESTV signal) are inconsistent, i.e. the periodicity of the ESTV signal is not the same, which further leads to a flashing phenomenon at the beginning of each frame.

[0058] Exemplarily, as Figure 2FIG2 is a schematic diagram of a separate ESTV signal generation method according to some embodiments. The separate ESTV signal is generated by using FW1, and the periodic ESTV signal is generated by using FW2. The ESTV signal is then synthesized into an ESTV signal within the timing controller (TCON) and output to the display panel via a general-purpose input output (GPIO).

[0059] The split ESTV signal generated by FW1 includes an ESTV compensation signal corresponding to a+b+c, and the periodic ESTV signal generated by FW2 includes multiple ESTV periodic signals corresponding to e+f.

[0060] In some embodiments, when receiving the pixel clock (PG) signal from the front-end device, TCON needs to receive at least one ESTV pulse signal to perform ESTV adjustment. When performing signal adjustment, whether using the separated ESTV signal generated by FW1 as the adjustment reference or the periodic ESTV signal generated by FW2 as the adjustment reference, due to the slow response speed of FW, it cannot respond immediately to generate the ESTV signal after receiving the PG signal, resulting in inconsistent ESTV periods, and ESTV adjustment cannot be achieved, so that screen flickering will still occur at the beginning of each frame.

[0061] It can be understood that the PG signal includes a vertical synchronization signal (VS), a vertical blanking interval (VB), a vertical active pixel (VA), and a vertical frequency (VF).

[0062] VS marks the beginning of each frame, ensuring vertical scanning synchronization of the image signal. VB refers to the interval between the completion of one frame scan and the start of the next. VA refers to the number of vertical pixels used to display image information in each frame. VF refers to the number of screen refreshes per second.

[0063] For example, in combination Figure 2 , take the periodic ESTV signal generated by FW2 as the adjustment benchmark as an example. Figure 3 As shown, since the periodic ESTV signal generated by FW2 is used as the adjustment reference, the duration of the luminous time e at the end of the frame of the ESTV signal in the second frame (such as the ESTV signal corresponding to Z) is different from the duration of other luminous times e in the second frame, which leads to screen flickering at the end of the second frame.

[0064] In other embodiments, when a PG signal is received from a front-end device, since the embedded clock of the embedded display port (EDP) of the front-end device fluctuates with the tolerance of the external active crystal oscillator, after the TCON receives the driving signal from the front-end device, the signal restored by the internal clock and data recovery (CDR) circuit is inconsistent with the TCON VF, resulting in an incomplete ESTV signal at the end of each frame at a refresh rate that is an integer multiple of the ESTV pulse, which in turn causes a sudden change in brightness in each frame, i.e., screen flicker.

[0065] For example, Figure 4 As shown in the figure, in the case of high refresh rate (such as above 120 Hz), even if the PG clock CLK is unstable in each cycle, because the fluctuation of the clock CLK in each frame accumulates less, the Vtotal counted by the clock CLK fluctuates less, resulting in less fluctuation of the ESTV signal at the end of the frame (such as 1 time), smaller changes in brightness of each frame, and unobvious screen flickering. In the case of low refresh rate (such as below 30 Hz), since one frame time is longer, the Vtotal counted by the clock CLK fluctuates greatly, resulting in more fluctuations of the EM signal at the end of the frame (such as 3 times), larger changes in brightness of each frame, and obvious screen flickering.

[0066] In view of this, an embodiment of the present application provides a display driving system. Figure 5 As shown, the display driving system 500 includes a signal receiving module 510, a signal compensation module 520 and a signal output module 530. The signal receiving module 510 is connected to the signal output module 530 through the signal compensation module 520. The signal compensation module 520 includes a first compensation unit 521 and a second compensation unit 522.

[0067] In some embodiments, the signal receiving module 510 can receive a driving signal for driving the panel to display an image and send it to the signal compensation module 520. Based on the received driving signal, the signal compensation module 520 can generate a first ESTV compensation signal through the first compensation unit 521 and an ESTV periodic signal through the second compensation unit 522, respectively, and synthesize the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal, and send it to the signal output module 530. The signal output module 530 can output the received ESTV signal to the display panel to drive the display panel to display an image.

[0068] The display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal. The first ESTV compensation signal is a signal before the ESTV periodic signal. The first ESTV compensation signal and the ESTV periodic signal are signals in the same frame.

[0069] Based on this, the screen flicker phenomenon of the display panel is caused by the inconsistency between the pre-processing time period of the voltage and the cycle length of other ESTV signals within a frame. Therefore, the display drive system in the present application accurately processes the drive signal by introducing a signal compensation module including a first compensation unit and a second compensation unit, so as to generate a first ESTV compensation signal through the first compensation unit and an ESTV periodic signal through the second compensation unit, so that the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, ensuring the period consistency of the ESTV signal within a frame, and reducing the screen flicker phenomenon caused by signal mutation and mismatch; further, by synthesizing the first ESTV compensation signal and the ESTV periodic signal into an overall ESTV signal output, the output ESTV signal is smoother and more stable, thereby reducing the screen flicker phenomenon caused by signal fluctuations.

[0070] In an embodiment of the present application, the display drive system may be a system carried by an electronic device, which may be a terminal or other device other than a terminal. For example, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., and the embodiment of the present application does not specifically limit it.

[0071] The following will describe in detail the implementation of the embodiment of the present application in conjunction with the accompanying drawings.

[0072] like Figure 6 As shown, Figure 6 This is a structural diagram of a display device provided in an embodiment of the present application. Display device 600 may be a terminal device with a display panel, such as a television. Display device 600 may include a display panel 601, at least one processor 602, a transceiver 603, and may also include memory 604. Processor 602, memory 604, and transceiver 603 may be connected via a communication line.

[0073] In the embodiment of the present application, the display panel 601 is used to display the image to be displayed. The display panel can be in normal brightness mode or low brightness mode.

[0074] Normal brightness mode refers to the brightness level of the display panel under standard or default settings. In normal brightness mode, the brightness of the display panel ensures that users can clearly see the content under different lighting conditions.

[0075] Low brightness mode refers to the display state of the display panel after the brightness is reduced. In low brightness mode, the brightness of the display panel is significantly reduced. It is usually used in low-light environments to reduce the interference of the light emitted by the screen on the surrounding environment.

[0076] In the embodiment of the present application, the processor 602 can be a chip. The chips can include five categories: logic chips, memory chips, sensor chips, power chips and communication chips. Among them, the processor class mainly undertakes chips for specific calculation and control tasks in the system, such as microcontroller unit (MCU), central processing unit (CPU), graphics processing unit (GPU), neural processing unit (NPU), etc. The storage class mainly undertakes chips for data storage in the system, as well as some storage controller chips, such as dynamic random access memory (DRAM), static random access memory (SRAM), flash memory (EEPROM memory, Flash), etc. The sensor class mainly undertakes chips for information collection, presentation and interaction in the system, such as input and output devices, some signal processing chips, etc. Communications chips (wired and wireless) mainly undertake communication functions in the system, such as some Ethernet chips, switching chips, wide area and local area network, point-to-point and ad hoc network chips, as well as filtering, amplification, power and other devices that assist in communication. Commonly known products include wireless fidelity (WiFi), Bluetooth, fifth-generation mobile communication technology (5G) baseband, global positioning system (GPS), narrowband internet of things (NB-IoT), network cards, switches, etc.

[0077] The communication line may include a channel for transmitting information between the above components.

[0078] The memory 604 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to contain or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0079] In one possible design, the memory 604 can exist independently of the processor 602, that is, the memory 604 can be a memory external to the processor 602. In this case, the memory 604 can be connected to the processor 602 via a communication line to store execution instructions or application code, and the processor 602 controls execution to implement the network quality determination method provided in the following embodiments of this application. In another possible design, the memory 604 can also be integrated with the processor 602, that is, the memory 604 can be an internal memory of the processor 602. For example, the memory 604 is a cache that can be used to temporarily store some data and instruction information.

[0080] As an implementation, the processor 602 may include one or more CPUs.

[0081] It should be noted that the display device described in the embodiment of the present application is intended to more clearly illustrate the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution provided in the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of display devices and the emergence of other display devices, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

[0082] The following combination Figure 5 The display drive system shown and Figure 6 The display device shown illustrates the display driving method provided in the embodiment of the present application.

[0083] Figure 7A flow chart of a display driving method according to some embodiments is provided, which can be applied to Figure 5 Of course, the subject that performs the steps of the method may be a display driving system, or a device / module in the display driving system, such as an integrated circuit or a chip, and the present application does not specifically limit this.

[0084] For example, Figure 7 As shown, the display driving method provided in the embodiment of the present application may include S701 to S704.

[0085] S701: Receive a driving signal.

[0086] The driving signal is used to drive the display panel to display an image.

[0087] The embodiments of the present application do not limit the type or specifications of the display panel. For example, the type of the display panel may be an OLED screen, and the specifications of the display panel may be 23 inches, 24 inches, or 27 inches.

[0088] In some embodiments, the driving signal may be a signal sent by a front-end device. The front-end device is a device that provides a voltage signal. For example, the front-end device may be a power supply device, a CPU device, a server, etc.

[0089] For example, taking the display driving system as a display driving system in a notebook computer as an example, the signal receiving module can receive a driving signal sent from the CPU in the notebook computer to drive the display panel to display an image.

[0090] S702 : Based on the driving signal, generate a first ESTV compensation signal through a first compensation unit, and generate an ESTV period signal through a second compensation unit.

[0091] The display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal. The first ESTV compensation signal is a signal before the ESTV periodic signal. The first ESTV compensation signal and the ESTV periodic signal are signals in the same frame.

[0092] In some embodiments, the first ESTV compensation signal is a signal at the beginning of each frame signal, and the ESTV periodic signal is a periodic signal after the first ESTV compensation signal.

[0093] For example, Figure 8 As shown, the first ESTV compensation signal is a+b+c+e, and the ESTV periodic signal is e+f, then a+b+c is the display interval of the first ESTV compensation signal, f is the display interval of the ESTV periodic signal, and a+b+c=f.

[0094] In some embodiments, when the duration of the driving signal received by the signal receiving module is greater than or equal to the minimum period duration of the ESTV signal, the first ESTV compensation signal is generated based on the driving signal by the first compensation unit, and the ESTV period signal is generated based on the second compensation unit.

[0095] The minimum period duration of the ESTV signal refers to the duration corresponding to the data of one pulse of the ESTV signal. For example, in combination with Figure 8 The ESTV signal includes a plurality of periods, and the minimum period duration is the signal duration corresponding to one e+f.

[0096] Optionally, the first compensation unit can be controlled to generate the first ESTV compensation signal based on the driving signal, and then the second compensation unit can be controlled to generate the ESTV period signal based on the display interval of the first ESTV compensation signal, so that the display interval of the ESTV period signal is consistent with the display interval of the first ESTV compensation signal.

[0097] In the embodiments of the present application, the first compensation unit and the second compensation unit are both used to generate the ESTV signal. The first compensation unit can be an FW unit, and the second compensation unit can be a hardware circuit unit. It can be understood that the first compensation unit and the second compensation unit can also be other forms of ESTV signal generation units, which are not limited in the present application.

[0098] Exemplarily, taking the first compensation unit as an FW unit and the second compensation unit as a hardware circuit unit as an example. As shown in Figure 9 After the signal receiving module receives the driving signal, the FW unit can generate the corresponding first ESTV compensation signal (such as the ESTV signal corresponding to a+b+c+e) according to the preset preprocessing period, and then the hardware circuit unit generates the ESTV period signal (such as the ESTV signal corresponding to f+e) according to the duration corresponding to a+b+c, at this time a+b+c=f.

[0099] S703, combine the ESTV period signal and the first ESTV compensation signal into the ESTV signal.

[0100] Further, after generating the first ESTV compensation signal and the ESTV period signal, the first ESTV compensation signal and the ESTV period signal can be combined to obtain the ESTV signal.

[0101] Exemplarily, in combination with Figure 9 The ESTV signal corresponding to b+c+e and the ESTV signal corresponding to f+e can be combined into Figure 10As shown in the ESTV signal, the duration of each frame of the front-end PG signal (ie, the driving signal) received at this time is equal to the duration of each frame of the synthesized ESTV signal, and the frame tail of each frame of the ESTV signal is complete.

[0102] S704 , outputting an ESTV signal to the display panel to drive the display panel to display an image.

[0103] In some embodiments, after generating the ESTV signal, the signal compensation module may send the ESTV signal to the signal output module, and then the signal output module outputs the ESTV signal to the display panel to drive the display panel to display an image.

[0104] Exemplarily, after obtaining the ESTV signal, the signal output module may output the ESTV signal to the display panel through the GPIO.

[0105] Based on this, the screen flicker phenomenon of the display panel is caused by the inconsistency between the pre-processing time period of the voltage and the cycle length of other ESTV signals within a frame. Therefore, the display drive system in the present application accurately processes the drive signal by introducing a signal compensation module including a first compensation unit and a second compensation unit, so as to generate a first ESTV compensation signal through the first compensation unit and an ESTV periodic signal through the second compensation unit, so that the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, ensuring the period consistency of the ESTV signal within a frame, and reducing the screen flicker phenomenon caused by signal mutation and mismatch; further, by synthesizing the first ESTV compensation signal and the ESTV periodic signal into an overall ESTV signal output, the output ESTV signal is smoother and more stable, thereby reducing the screen flicker phenomenon caused by signal fluctuations.

[0106] Optionally, when the driving signal received by the signal receiving module is inconsistent with the expected signal, the signal compensation module needs to adjust the driving signal so that the driving signal is consistent with the expected signal.

[0107] The following combination Figure 11 , describes the process of the signal compensation module adjusting the driving signal.

[0108] For example, Figure 11 As shown, the display driving method provided in the embodiment of the present application may further include:

[0109] S1101 : Determine a second ESTV compensation signal based on a driving signal and an expected signal.

[0110] The expected signal refers to a driving signal required for the display panel to display normally. When the expected signal is used to drive the display panel to display an image, the display panel will not experience screen flickering.

[0111] In the embodiments of the present application, the display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV period signal, the second ESTV compensation signal is a signal after the ESTV period signal, and the second ESTV compensation signal and the ESTV period signal are signals in the same frame.

[0112] In some embodiments, the second ESTV compensation signal is a signal at the end of each frame, and the ESTV period signal is a periodic ESTV signal before the second ESTV compensation signal.

[0113] For example, as shown in FIG. 6, the second ESTV compensation signal is an ESTV signal corresponding to the dashed portion, the first ESTV compensation signal and the ESTV period signal are ESTV signals corresponding to the solid portion, and the signal duration of the ESTV signal composed of the solid portion and the dashed portion after signal compensation is consistent with the signal duration of the received driving signal (such as VS). Figure 12

[0114] In the embodiments of the present application, the inconsistency between the driving signal and the expected signal means that the frequency of the driving signal is inconsistent with the frequency of the expected signal. The frequency of the expected signal can be flexibly adjusted according to the actual display panel parameters, for example, the frequency of the expected signal can be 60 Hz, 90 Hz, 120 Hz, etc.

[0115] For example, taking the frequency of the expected signal as 120 Hz as an example. If the frequency of the received driving signal is greater than 120 Hz (120.1 Hz) or less than 120 Hz (such as 119.9 Hz), it indicates that the driving signal is inconsistent with the expected signal.

[0116] In some embodiments, in the case where the driving signal is inconsistent with the expected signal, the frequency difference between the driving signal and the expected signal can be determined first, and then the second ESTV compensation signal consistent with the frequency difference can be determined from the signal buffer.

[0117] In the embodiments of the present application, the signal buffer is a buffer in the display driving system 500 as shown in FIG. 5, and the signal buffer stores at least one frame of ESTV signal. For example, the signal buffer can be a TCON line buffer. Figure 5

[0118] For example, taking the frequency of the expected signal as 120 Hz. If the frequency of the received driving signal is 119.9 Hz, the frequency difference between the expected signal and the driving signal can be determined as 0.1 Hz first, and then the ESTV signal corresponding to the 0.1 Hz signal can be searched from the signal buffer and used as the second ESTV compensation signal.

[0119] ​​It is understandable that before the above S1101 , the display driving system may also execute the above S701 and S702 .

[0120] S1102 , synthesize the ESTV period signal, the first ESTV compensation signal, and the second ESTV compensation signal into an ESTV signal.

[0121] It can be understood that the detailed description of the first ESTV compensation signal and the ESTV periodic signal can refer to the relevant description of the first ESTV compensation signal and the ESTV periodic signal in the above S702 part, which will not be repeated here.

[0122] Further, after the first ESTV compensation signal, the ESTV periodic signal, and the second ESTV compensation signal are generated, the first ESTV compensation signal, the ESTV periodic signal, and the second ESTV compensation signal may be synthesized to obtain an ESTV signal.

[0123] For example, the second ESTV compensation signal can be added to the end of the frame of the ESTV periodic signal by TCON, as shown in FIG. Figure 12 The ESTV signal is shown. Figure 12 The dotted line portion is the second ESTV compensation signal. The duration of the received front-end PG signal (ie, the driving signal) is equal to the duration of the synthesized ESTV signal, and the frame tail of each frame of the ESTV signal is complete.

[0124] It is understandable that after the above S1102 , the display driving system may further execute the above S704 .

[0125] In this way, since the driving signal that drives the display panel to display the image may have errors, resulting in screen flickering, the present application can also obtain the frequency difference by comparing the driving signal with the expected signal actually required by the display panel, and generate a second ESTV compensation signal based on the frequency difference, and add it to the end of the ESTV periodic signal, thereby ensuring that the output ESTV signal is consistent with the actually required ESTV signal, avoiding the occurrence of screen flickering on the display panel.

[0126] It should be pointed out that the various embodiments of the present application can refer to each other, for example, the same or similar steps, method embodiments, system embodiments and device embodiments can refer to each other without limitation.

[0127] In the embodiment of the present application, the signal control device can be divided into functional modules or functional units according to the above method example. For example, each functional module or functional unit can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of software functional modules or functional units. Among them, the division of modules or units in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0128] like Figure 13 , which is a structural diagram of a display driver apparatus 1300 provided according to some embodiments. The display driver apparatus 1300 includes: a receiving unit 1301 , a processing unit 1302 and a sending unit 1303 .

[0129] Among them, the receiving unit 1301 is used to receive a driving signal, which is used to drive the display panel to display an image; the processing unit 1302 is used to generate a first ESTV compensation signal through a first compensation unit based on the driving signal, and to generate an ESTV periodic signal through a second compensation unit, and to synthesize the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal, and the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal; the sending unit 1303 is used to output the ESTV signal to the display panel to drive the display panel to display an image.

[0130] In one possible implementation, the processing unit 1302 is specifically configured to generate, based on the driving signal, a first ESTV compensation signal by a first compensation unit, and generate an ESTV periodic signal by a second compensation unit when the duration of the driving signal received by the receiving unit is greater than or equal to the minimum period of the ESTV signal. The ESTV signal includes multiple periods, the first ESTV compensation signal is a signal before the ESTV periodic signal, and the first ESTV compensation signal and the ESTV periodic signal are signals within the same frame.

[0131] In a possible implementation, the processing unit 1302 is specifically configured to: control the first compensation unit to generate a first ESTV compensation signal based on the driving signal; and control the second compensation unit to generate an ESTV periodic signal based on a display interval of the first ESTV compensation signal.

[0132] In a possible implementation, above-mentioned processing unit 1302, is specifically used for: when driving signal is inconsistent with the desired signal of display drive system, based on driving signal and desired signal, determine the second ESTV compensation signal, and ESTV periodic signal, the first ESTV compensation signal and the second ESTV compensation signal are synthesized into ESTV signal.Desired signal is required driving signal when display panel normally displays.The display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, and the second ESTV compensation signal is the signal after the ESTV periodic signal, and the second ESTV compensation signal and the ESTV periodic signal are signals in the same frame.

[0133] In one possible implementation, the processing unit 1302 is specifically configured to determine a frequency difference between the drive signal and the desired signal, and determine a second ESTV compensation signal consistent with the frequency difference from a signal buffer. The signal buffer is a buffer in the display drive system, and the signal buffer stores at least one frame of the ESTV signal.

[0134] Based on the above technical solution, the screen flicker phenomenon of the display panel is caused by the inconsistency between the pre-processing time period of the voltage and the cycle length of other ESTV signals within a frame. Therefore, the display drive system in the present application accurately processes the drive signal by introducing a signal compensation module including a first compensation unit and a second compensation unit, so as to generate a first ESTV compensation signal through the first compensation unit and an ESTV periodic signal through the second compensation unit, so that the display interval of the first ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, ensuring the periodic consistency of the ESTV signal within a frame, and reducing the screen flicker phenomenon caused by signal mutation and mismatch; further, by synthesizing the first ESTV compensation signal and the ESTV periodic signal into an overall ESTV signal output, the output ESTV signal is smoother and more stable, thereby reducing the screen flicker phenomenon caused by signal fluctuations.

[0135] When implemented by hardware, the receiving unit 1301, the processing unit 1302 and the sending unit 1303 in the embodiment of the present application can be integrated on a processor. Figure 14 shown.

[0136] Figure 14Another possible structural diagram of the display driver device involved in the above embodiment is shown. The communication device includes: a processor 1402 and a communication interface 1403. The processor 1402 is used to control and manage the actions of the device, for example, to execute the steps performed by the above processing unit 1302, and / or to execute other processes of the technology described herein. The communication interface 1403 is used to support communication between the device and other network entities, for example, to execute the steps performed by the above receiving unit 1301 and the sending unit 1303, and / or to execute other processes of the technology described herein. The device may also include a memory 1401 and a bus 1404, and the memory 1401 is used to store program code and data of the device.

[0137] Among them, the memory 1401 can be a memory in the device, etc., and the memory can include a volatile memory, such as a random access memory; the memory can also include a non-volatile memory, such as a read-only memory, a flash memory, a hard disk or a solid-state drive; the memory can also include a combination of the above types of memory.

[0138] The processor 1402 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The processor may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing (DSP) and a microprocessor, and the like.

[0139] The bus 1404 may be an extended industry standard architecture (EISA) bus, etc. The bus 1404 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 14 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0140] Figure 14 The device in the embodiment may also be a chip. The chip includes one or more (including two) processors 1402 and a communication interface 1403.

[0141] Optionally, the chip further includes a memory 1405, which may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1402. A portion of the memory 1405 may also include a non-volatile random access memory (NVRAM).

[0142] In some embodiments, the memory 1405 stores the following elements, execution modules or data structures, or a subset thereof, or an extended set thereof.

[0143] In the embodiment of the present application, the corresponding operation is performed by calling the operation instruction stored in the memory 1405 (the operation instruction may be stored in the operating system).

[0144] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer (e.g., a receiving node), the computer executes a synchronization method as in any of the above embodiments.

[0145] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0146] Some embodiments of the present disclosure further provide a computer program product, for example, stored on a non-transitory computer-readable storage medium. The computer program product includes computer program instructions that, when executed on a computer (e.g., a receiving node), cause the computer to perform the synchronization method described in the above embodiments.

[0147] Some embodiments of the present disclosure further provide a computer program. When the computer program is executed on a computer (eg, a receiving node), the computer program enables the computer to execute the synchronization method of the above embodiments.

[0148] The beneficial effects of the above-mentioned computer-readable storage medium, computer program product and computer program are the same as the beneficial effects of the synchronization method of some of the above-mentioned embodiments, and will not be repeated here.

[0149] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0150] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0151] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0152] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present disclosure should be included within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display driving system, characterized in that: The display driving system includes: a signal receiving module, a signal compensation module and a signal output module, wherein the signal receiving module is connected to the signal output module through the signal compensation module, and the signal compensation module includes a first compensation unit and a second compensation unit; The signal receiving module is configured to: receive a driving signal, where the driving signal is used to drive the display panel to display an image; The signal compensation module is configured to: generate a first ESTV compensation signal through the first compensation unit based on the driving signal, and generate an ESTV periodic signal through the second compensation unit, and synthesize the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal, wherein a display interval of the first ESTV compensation signal is consistent with a display interval of the ESTV periodic signal; The signal output module is configured to output the ESTV signal to the display panel to drive the display panel to display an image.

2. The display driving system according to claim 1, wherein: The signal compensation module is specifically configured to: generate the first ESTV compensation signal through the first compensation unit based on the driving signal, and generate the ESTV period signal through the second compensation unit, when the duration of the driving signal received by the signal receiving module is greater than or equal to the minimum cycle duration of the ESTV signal; The ESTV signal includes multiple cycles, the first ESTV compensation signal is a signal before the ESTV cycle signal, and the first ESTV compensation signal and the ESTV cycle signal are signals in the same frame.

3. The display driving system according to claim 1 or 2, characterized in that: The signal compensation module is specifically configured as follows: Based on the driving signal, controlling the first compensation unit to generate the first ESTV compensation signal; The second compensation unit is controlled to generate the ESTV period signal based on a display interval of the first ESTV compensation signal.

4. The display driving system according to claim 1, wherein: The signal compensation module is specifically configured as follows: In the case where the driving signal is inconsistent with the expected signal, determining a second ESTV compensation signal based on the driving signal and the expected signal, wherein the expected signal is a driving signal required for normal display of the display panel; synthesizing the ESTV periodic signal, the first ESTV compensation signal, and the second ESTV compensation signal into the ESTV signal; The display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, the second ESTV compensation signal is a signal after the ESTV periodic signal, and the second ESTV compensation signal and the ESTV periodic signal are signals in the same frame.

5. The display driving system according to claim 4, wherein: The signal compensation module is specifically configured as follows: determining a frequency difference between the drive signal and the desired signal; A second ESTV compensation signal consistent with the frequency difference is determined from a signal buffer, wherein the signal buffer is a buffer in the display driving system and stores at least one frame of ESTV signal.

6. A display driving method, characterized in that: Applied to a display driving system, the method includes: receiving a driving signal, wherein the driving signal is used to drive the display panel to display an image; Based on the driving signal, a first compensation unit generates a first ESTV compensation signal, and a second compensation unit generates an ESTV periodic signal, and the ESTV periodic signal and the first ESTV compensation signal are combined into an ESTV signal, wherein a display interval of the first ESTV compensation signal is consistent with a display interval of the ESTV periodic signal; The ESTV signal is output to the display panel to drive the display panel to display an image.

7. The method according to claim 6, characterized in that The synthesizing the ESTV periodic signal and the first ESTV compensation signal into an ESTV signal includes: In the case where the driving signal is inconsistent with the expected signal, determining a second ESTV compensation signal based on the driving signal and the expected signal, wherein the expected signal is a driving signal required for normal display of the display panel; synthesizing the ESTV periodic signal, the first ESTV compensation signal, and the second ESTV compensation signal into the ESTV signal; The display interval of the second ESTV compensation signal is consistent with the display interval of the ESTV periodic signal, the second ESTV compensation signal is a signal after the ESTV periodic signal, and the second ESTV compensation signal and the ESTV periodic signal are signals in the same frame.

8. A display driving device, characterized in that: The display driving device includes: a processor and a communication interface; the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the display driving method according to claim 6 or 7.

9. A computer-readable storage medium storing instructions, characterized in that: When a computer executes the instructions, the computer executes the display driving method according to claim 6 or 7.

10. A computer program product comprising instructions, characterized in that: When the instructions are executed on a computer, the computer executes the display driving method according to claim 6 or 7.

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