Display panel driving method, driving device and readable storage medium

Abstract

The present invention discloses a driving method, a driving device and a readable storage medium for a display panel, and relates to the field of display technology. An initial response square wave signal is converted based on the current display temperature to obtain a target response square wave signal. According to a target duty cycle in the target response square wave signal, a calling requirement is determined to determine the response time corresponding to the normal output of a display image by a liquid crystal display device at the current display temperature. A target response time parameter table that meets the calling requirement is called, and the display panel is driven to operate at the current display temperature according to the target response time parameter table, thereby effectively accelerating the response speed of each pixel point to the input display signal at various temperatures, and avoiding the undesirable situation that the animation image still has blurring and ghosting due to the inability to take into account different temperatures.

Description

Technical Field

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

[0002] In the current display device market, liquid crystal display devices occupy a dominant position due to their advantages such as high display quality, low electromagnetic radiation, and large viewing area.

[0003] Among them, the display principle of the liquid crystal display device is mainly achieved by controlling the flipping of liquid crystal molecules. The response time of the liquid crystal molecule flipping is the reaction speed of each pixel point in the liquid crystal display device to the input display signal. The faster the reaction speed, the less blur and ghosting of the dynamic picture displayed by the liquid crystal display device.

[0004] However, it has been found in actual applications that the response time of the liquid crystal molecule flipping is affected by the temperature of the liquid crystal display device. Too high or too low a temperature will prolong the response time of the liquid crystal molecule flipping, resulting in blurring and ghosting in the dynamic picture. The existing adjustment of the response time generally directly compensates the response time of the liquid crystal molecule flipping through a fixed compensation time to improve the blurring and ghosting. However, the fixed compensation time can only effectively compensate for the flipping of liquid crystal molecules at a certain temperature. For liquid crystal molecules at other temperatures that are too different from this temperature, the compensation time at this time cannot take into account both, and as a result, the dynamic picture will still have obvious blurring and ghosting. Summary of the Invention

[0005] The main purpose of the present invention is to provide a display panel driving method, a driving device and a readable storage medium, aiming to solve the technical problem that conventional response time adjustment solutions cannot take into account the response time under different temperature conditions.

[0006] To achieve the above object, the present invention provides a method for driving a display panel, the method comprising the following steps:

[0007] Converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of the response duration within a preset driving period;

[0008] Determining a call requirement according to a target duty cycle in the target response square wave signal;

[0009] A target response time parameter table that meets the calling requirement is called, and the display panel is driven to operate at the current display temperature according to the target response time parameter table.

[0010] Optionally, before the step of converting the initial response square wave signal based on the current display temperature, the driving method further includes:

[0011] Acquiring a driving cycle for driving the display panel at a current moment, an initial driving voltage output during the driving cycle, and an initial response time for outputting the initial driving voltage;

[0012] generating the initial response square wave signal based on the driving period, the initial driving voltage, and the initial response time, and outputting the initial response square wave signal to a temperature detection module;

[0013] After the current display temperature of the display panel at the current moment is detected by the temperature detection module, the step of converting the initial response square wave signal based on the current display temperature is performed.

[0014] Optionally, the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal includes:

[0015] After the temperature detection module receives the initial response square wave signal, using the initial driving voltage of the initial response square wave signal as the input driving voltage of the temperature detection module, identifying the output driving voltage output by the temperature detection module based on the input driving voltage, and obtaining a voltage rise of the output driving voltage during the driving cycle;

[0016] When it is recognized that the output driving voltage is equal to the preset driving voltage, the voltage at which the output driving voltage is equal to the preset driving voltage is used as the target driving voltage, and a voltage maintenance time of the target driving voltage is determined according to the voltage rise condition;

[0017] The target response square wave signal is generated based on the driving period, the target driving voltage, and the voltage maintaining time.

[0018] Optionally, before the step of determining the call requirement according to the target duty cycle in the target response square wave signal, the driving method further includes:

[0019] Returning to the step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, until the number of the obtained target response square wave signals equals a preset number of signals, and determining the expected response time reflected by each target duty cycle based on the target duty cycles in the target response square wave signals;

[0020] In the case where it is determined that the estimated response times are all within the same display temperature range, performing the step of determining the call demand according to the target duty cycle in the target response square wave signal;

[0021] If it is determined that the predicted response times are not within the same display temperature range, performing the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal; or

[0022] After selecting a target response square wave signal that meets the preset response square wave signal condition from each of the target response square wave signals as the target response direction signal in the next process of determining whether each of the expected response times is in the same display temperature range, the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal is executed, wherein the preset response square wave signal condition is that the display temperature range in which the expected response time reflected by the target duty cycle of the last target response square wave obtained is the benchmark display temperature range, the display temperature range in which the expected response time reflected by the target duty cycle is the benchmark display temperature range, and there are other target response square wave signals that are continuous with the last target response square wave.

[0023] Optionally, the step of determining the call requirement according to the target duty cycle in the target response square wave signal includes:

[0024] determining an expected response time for driving the display panel to operate at the current display temperature according to the target duty cycle;

[0025] Determining a preset response time can reflect the calling requirement of the response time parameter table of the expected response time.

[0026] Optionally, the step of calling a target response time parameter table that meets the calling requirement and driving the display panel to operate at the current display temperature according to the target response time parameter table includes:

[0027] Filtering the response time parameter table based on the calling requirement to obtain and call the target response time parameter table that meets the calling requirement;

[0028] The target response time parameter table is queried to obtain a compensation voltage of the target driving voltage, the target driving voltage is compensated based on the compensation voltage, and the display panel is driven to operate according to the compensated target driving voltage.

[0029] The present invention further provides a display panel, comprising a display panel driving device, a memory, a processor, and a computer processing program stored in the memory and executable on the processor, wherein the processor implements the steps of the display panel driving method described above when executing the computer processing program. The display panel driving device comprises:

[0030] a conversion module, configured to convert an initial response square wave signal based on a current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of a response duration within a preset driving period;

[0031] a determination module, configured to determine a call requirement based on a target duty cycle in the target response square wave signal;

[0032] The calling module is used to call a target response time parameter table that meets the calling requirement, and drive the display panel at the current display temperature to operate according to the target response time parameter table.

[0033] Optionally, the conversion module is composed of a screen driver board and a temperature detection module, the signal output end of the screen driver board is connected to the input end of the temperature detection module, and is used to transmit the initial square wave signal to the temperature detection module, and the signal input end of the screen driver board is connected to the output end of the temperature detection module, and is used to receive the output driving voltage output by the temperature detection module;

[0034] The determining module and the calling module are included in the screen driving board.

[0035] Optionally, the temperature detection module includes: a thermistor and a capacitor;

[0036] One end of the thermistor is connected to the signal output end of the screen driver board, the other end of the thermistor is connected to the signal input end of the screen driver board, one end of the capacitor is connected to the connecting line between the thermistor and the signal input end, and the other end of the capacitor is grounded.

[0037] In addition, to achieve the above-mentioned purpose, the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned display panel driving method are implemented.

[0038] The present invention converts an initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of a response time within a preset driving cycle. Based on the target duty cycle in the target response square wave signal, a call requirement is determined to determine the response time corresponding to the normal output of the display image by the liquid crystal display device at the current display temperature. A target response time parameter table that meets the call requirement is called, and the display panel at the current display temperature is driven to operate according to the target response time parameter table. Based on the call requirement corresponding to the response time, a target response time parameter table that can compensate for the target driving voltage in the target response square wave signal is called, and the target driving voltage is compensated according to the compensation driving voltage in the target response time parameter table, so that the compensated target driving voltage can drive the liquid crystal molecules to flip within the effective response time, thereby effectively accelerating the response speed of each pixel point to the input display signal at various temperatures, and avoiding the undesirable situation that the animation image still has blurring and ghosting due to the inability to take into account different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present invention;

[0040] Figure 2 1 is a flow chart of a first embodiment of a method for driving a display panel according to the present invention;

[0041] Figure 3 A schematic diagram of a square wave signal for converting an initial response square wave signal into a target response square wave signal;

[0042] Figure 4 Schematic diagram of calling different response time parameter tables based on different display temperatures in the present invention;

[0043] Figure 5 is a flow chart of a second embodiment of a method for driving a display panel according to the present invention;

[0044] Figure 6 is a schematic flow chart of a third embodiment of a method for driving a display panel according to the present invention;

[0045] Figure 7 Schematic diagram of the module structure of the driving device of the display panel of the present invention;

[0046] Figure 8 This is a schematic diagram of the connection structure between the screen driver board and the temperature detection module.

[0047] Description of Figure Numbers:

[0048] Label name TCON Screen driver board 10 Temperature detection module R1 Thermistor C1 capacitance

[0049] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0051] like Figure 1 As shown, Figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present invention.

[0052] The driving method of the display panel according to the embodiment of the present invention uses the display panel as the carrier, such as Figure 1 As shown, the display panel may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display area (Display), an input unit such as a keyboard (Keyboard), and the user interface 1003 may optionally include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001.

[0053] Optionally, the display panel may also include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among them, the sensors include light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor may turn off the display screen and / or backlight when the mobile terminal is moved to the ear. As a type of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; of course, the mobile terminal can also be equipped with other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which will not be repeated here.

[0054] Those skilled in the art will understand that Figure 1The display panel structure shown in the figure does not constitute a limitation on the display panel, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0055] like Figure 1 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a computer processing program.

[0056] exist Figure 1 In the terminal shown, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to the client (user end) and communicate data with the client; and the processor 1001 can be used to call the computer processing program stored in the memory 1005 and perform the following operations:

[0057] Converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of the response duration within a preset driving period;

[0058] Determining a call requirement according to a target duty cycle in the target response square wave signal;

[0059] A target response time parameter table that meets the calling requirement is called, and the display panel is driven to operate at the current display temperature according to the target response time parameter table.

[0060] Furthermore, the processor 1001 may call a computer program stored in the memory 1005 and perform the following operations:

[0061] Before the step of converting the initial response square wave signal based on the current display temperature, obtaining a driving cycle for driving the display panel, an initial driving voltage output within the driving cycle, and an initial response time for outputting the initial driving voltage at a current moment;

[0062] generating the initial response square wave signal based on the driving period, the initial driving voltage, and the initial response time, and outputting the initial response square wave signal to a temperature detection module;

[0063] After the current display temperature of the display panel at the current moment is detected by the temperature detection module, the step of converting the initial response square wave signal based on the current display temperature is performed.

[0064] Furthermore, the processor 1001 may call a computer program stored in the memory 1005 and perform the following operations:

[0065] The step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal includes: after receiving the initial response square wave signal through the temperature detection module, using the initial driving voltage of the initial response square wave signal as the input driving voltage of the temperature detection module, identifying the output driving voltage output by the temperature detection module based on the input driving voltage, and obtaining the voltage rise of the output driving voltage during the driving cycle;

[0066] When it is recognized that the output driving voltage is equal to the preset driving voltage, the voltage at which the output driving voltage is equal to the preset driving voltage is used as the target driving voltage, and a voltage maintenance time of the target driving voltage is determined according to the voltage rise condition;

[0067] The target response square wave signal is generated based on the driving period, the target driving voltage, and the voltage maintaining time.

[0068] Furthermore, the processor 1001 may call a computer program stored in the memory 1005 and perform the following operations:

[0069] Before the step of determining the call requirement based on the target duty cycle in the target response square wave signal, returning to the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal, until the number of the obtained target response square wave signals equals the preset number of signals, and then determining the expected response time reflected by each target duty cycle based on the target duty cycles in the target response square wave signals;

[0070] In the case where it is determined that the estimated response times are all within the same display temperature range, performing the step of determining the call demand according to the target duty cycle in the target response square wave signal;

[0071] If it is determined that the predicted response times are not within the same display temperature range, performing the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal; or

[0072] After selecting a target response square wave signal that meets the preset response square wave signal condition from each of the target response square wave signals as the target response direction signal in the next process of determining whether each of the expected response times is in the same display temperature range, the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal is executed, wherein the preset response square wave signal condition is that the display temperature range in which the expected response time reflected by the target duty cycle of the last target response square wave obtained is the benchmark display temperature range, the display temperature range in which the expected response time reflected by the target duty cycle is the benchmark display temperature range, and there are other target response square wave signals that are continuous with the last target response square wave.

[0073] Furthermore, the processor 1001 may call a computer program stored in the memory 1005 and perform the following operations:

[0074] The step of determining the call requirement according to the target duty cycle in the target response square wave signal includes: determining an expected response time for driving the display panel to operate at the current display temperature according to the target duty cycle;

[0075] Determining a preset response time can reflect the calling requirement of the response time parameter table of the expected response time.

[0076] Furthermore, the processor 1001 may call a computer program stored in the memory 1005 and perform the following operations:

[0077] The step of calling a target response time parameter table that meets the calling requirement and driving the display panel to operate at the current display temperature according to the target response time parameter table includes: filtering the response time parameter table based on the calling requirement to obtain and call the target response time parameter table that meets the calling requirement;

[0078] The target response time parameter table is queried to obtain a compensation voltage of the target driving voltage, the target driving voltage is compensated based on the compensation voltage, and the display panel is driven to operate according to the compensated target driving voltage.

[0079] Reference Figure 2 , Figure 2 FIG1 is a flow chart of a first embodiment of a method for driving a display panel according to the present invention. The method for driving a display panel includes the following steps:

[0080] Step S10 , converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of the response duration within a preset driving cycle.

[0081] It should be noted that the current display temperature is the temperature of the display panel at the current moment detected by the temperature detection module, the initial response square wave signal represents the initial response duration of the flipping of the liquid crystal molecules in a driving cycle at the current moment, and the target response square wave signal represents the target response duration of the flipping of the liquid crystal molecules in a driving cycle at the temperature of the display panel at the current moment, wherein the driving cycle of the target response square wave signal is consistent with the driving cycle of the initial response square wave signal before the target response square wave signal is converted.

[0082] In this embodiment, after the current display temperature at the current moment is detected by the temperature detection module, the initial response square wave signal is converted according to the current display temperature. Specifically, the initial response time of the liquid crystal molecules flipping at a normal temperature is re-determined according to the current display temperature, and the target response time required for the liquid crystal molecules to flip when they are transformed to the current display temperature is determined. Figure 3 For example, assuming that SQW1 has a cycle of 3.2 microseconds, the high level (initial response duration) is maintained for 1.2 microseconds (37.5% of a single cycle), and the voltage is an initial response square wave signal of Vi / 0, after determining the current display temperature, the initial response square wave signal is converted based on the current display temperature, and after determining that the driving voltage that can cause the liquid crystal molecules to flip is reached at the current display temperature, the time for which the driving voltage is maintained is determined to be a high level, according to Figure 3 It can be seen that the converted target response square wave signal has a cycle of 3.2 microseconds, the high level (target response time) is maintained at 0.8 microseconds (accounting for 25% of a single cycle), and the voltage is Vo / 0. The target response square wave signal realizes the target response time of the liquid crystal molecules based on the real-time display temperature dynamic change, thereby achieving the optimal response time configuration for all temperature ranges.

[0083] By obtaining the response square wave signal at the current display temperature, the expected response time required to achieve normal flipping of liquid crystal molecules at various display temperatures is determined in real time based on the response square wave signal, and then the driving voltage required to achieve normal flipping of liquid crystal molecules is determined based on the expected response time, thereby improving the accuracy of the determined driving voltage.

[0084] Step S20: determining the calling requirement according to the target duty cycle in the target response square wave signal.

[0085] Still Figure 3 For example, after obtaining the target duty cycle of 25% in the target response square wave signal, the expected response time for the normal flipping of the liquid crystal molecules at the current display temperature is determined based on the target duty cycle of 25%. The expected response time can ensure that the display image of the liquid crystal molecules flipping is free of blur and ghosting.

[0086] After determining the expected response time for the liquid crystal molecules to flip normally at the current display temperature, the call requirement of the response time parameter table whose preset response time is consistent with the expected response time is determined, so that the response time parameter table consistent with the call requirement can be directly obtained in the memory storing multiple response time parameter tables based on the call requirement.

[0087] Optionally, the step of determining the call requirement according to the target duty cycle in the target response square wave signal in step S20 includes:

[0088] Step S201, determining an expected response time for driving the display panel to operate at the current display temperature according to the target duty cycle;

[0089] Step S202: Determine whether the preset response time can reflect the calling requirement of the response time parameter table of the expected response time.

[0090] After determining the target response square wave signal of the liquid crystal molecules at the current display temperature based on step S10, the target duty cycle in the target response square wave signal is obtained, that is, the target response time required for the liquid crystal molecules to flip at the current display temperature in the target response square wave signal, for example Figure 3 SQW2 in the example is obtained, and a target duty cycle of 25% of SQW2 is obtained. Based on the 25%, the call requirement for the target response time required for the current liquid crystal molecule flipping is determined as the response time parameter table 0.

[0091] It should be noted that Figure 4 For example, assuming that the display temperature is 10℃~25℃ when the target duty cycle is 25%, the calling requirement is determined based on the target duty cycle of 25%. In this embodiment, the calling requirement determined based on the target duty cycle of 25% is the response time parameter table 0.

[0092] When, during the subsequent operation of the display panel, it is detected that the target duty cycle drops from 25% to 20% when the display temperature drops to the display temperature range of -5°C to 10°C, the call requirement is determined based on the target duty cycle of 20%. In this embodiment, the call requirement determined based on the target duty cycle of 20% is the response time parameter table 2. Then, when the display panel is continued to be tested during operation, it is detected that the target duty cycle drops from 20% to 15% when the display temperature drops to the display temperature range of -20°C to -5°C, then At this time, the calling demand is determined based on the target duty cycle of 15%. In this embodiment, the calling demand determined based on the target duty cycle of 15% is the response duration parameter table 1. Similarly, when the display temperature drops to another display temperature range and the target duty cycle also drops to the target duty cycle corresponding to the other display temperature, a new calling demand is determined based on the target duty cycle corresponding to the other display temperature range, so as to ensure that the liquid crystal molecules can be quickly flipped in a low temperature environment, avoiding the blurred display image and ghosting caused by the untimely flipping of the liquid crystal molecules due to the low temperature.

[0093] Alternatively, when, during the subsequent operation of the display panel, it is detected that the target duty cycle increases from 25% to 30% when the display temperature rises to the display temperature range of 25°C to 40°C, the call requirement is determined based on the target duty cycle of 30%. In this embodiment, the call requirement determined based on the target duty cycle of 30% is the response time parameter table 3. Then, when further detection is performed during the operation of the display panel, it is detected that the target duty cycle increases from 30% to 35% when the display temperature rises to the display temperature range of 40°C to 55°C, the call requirement is determined based on the target duty cycle of 35%. In this embodiment, the call requirement determined based on the target duty cycle of 35% is the response time parameter table 4, and so on. The call requirement is dynamically determined based on the target duty cycle after conversion according to the current display temperature, so as to obtain the response time parameter table that can meet the normal flipping of liquid crystal molecules in a high temperature environment for targeted compensation.

[0094] Step S30 , calling a target response time parameter table that meets the calling requirement, and driving the display panel at the current display temperature to operate according to the target response time parameter table.

[0095] Because the target driving voltage Vo in the target response square wave signal is a preset driving voltage set based on the initial driving voltage Vi, the purpose is to determine the time to reach and maintain the preset driving voltage at the current display temperature, that is, the expected response time. In order to enable the liquid crystal molecules to flip within the expected response time, it is necessarily impossible to achieve it according to the initial driving voltage. Therefore, after determining the expected response time, this embodiment will call the target response time parameter table that meets the calling requirements of the expected response time based on the expected response time, so as to obtain the compensation voltage that can drive the liquid crystal molecules to flip within the expected response time in the target response time parameter table.

[0096] Specifically, after determining the calling requirement, the target response time parameter table that matches the calling requirement is directly called from the memory storing the response time parameter table according to the calling requirement, and the preset driving voltage, that is, the target driving voltage, is compensated according to the compensation voltage in the target response time parameter table, so that the compensated target driving voltage can drive the liquid crystal molecules to flip at the expected response time, and the display panel is driven to work based on the compensated driving voltage, thereby effectively speeding up the response speed of each pixel to the input display signal at various temperatures, and avoiding the undesirable situation that the animation picture still has blurring and ghosting due to the inability to take into account different temperatures.

[0097] Optionally, in step S30, calling a target response time parameter table that meets the calling requirement, and driving the display panel at the current display temperature to operate according to the target response time parameter table includes:

[0098] Step S301: Filter the response time parameter table based on the calling requirement to obtain and call the target response time parameter table that meets the calling requirement.

[0099] In this embodiment, after the screen driver board determines the calling requirement, the screen driver board filters the response time parameter table in the memory based on the calling requirement, thereby filtering and calling the target response time parameter table in the memory that matches the determined calling requirement, thereby realizing effective and accurate flipping of the liquid crystal molecules.

[0100] Step S302 , querying the target response time parameter table to obtain a compensation voltage of the target driving voltage, compensating the target driving voltage based on the compensation voltage, and driving the display panel to operate according to the compensated target driving voltage.

[0101] The called target response time parameter table is queried to obtain the compensation voltage required for the expected response time to achieve the flipping of the liquid crystal molecules at the current display temperature. The target driving voltage is directly compensated by the compensation voltage, so that when the compensated target driving voltage drives the liquid crystal molecules, the liquid crystal molecules can flip within the expected response time, thereby achieving a blur-free and ghost-free display image, avoiding the disadvantage of the conventional compensation voltage obtained based on a single response time parameter table, which has non-targeted compensation and cannot effectively ensure that the liquid crystal molecules flip within the expected response time.

[0102] In this embodiment, an initial response square wave signal is converted based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of the response time within a preset driving cycle. A call requirement is determined based on the target duty cycle in the target response square wave signal to determine the response time corresponding to normal output of a display image by the liquid crystal display device at the current display temperature. A target response time parameter table that meets the call requirement is called, and the display panel is driven at the current display temperature according to the target response time parameter table. Based on the call requirement corresponding to the response time, a target response time parameter table that can compensate for a target driving voltage in the target response square wave signal is called. The target driving voltage is compensated according to the compensation driving voltage in the target response time parameter table, so that the compensated target driving voltage can drive the liquid crystal molecules to flip within the effective response time, effectively accelerating the response speed of each pixel to an input display signal at various temperatures, and avoiding undesirable problems such as blurring and ghosting of animated images due to the inability to take into account different temperatures.

[0103] Reference Figure 5 , Figure 5 2 is a flow chart of a second embodiment of a method for driving a display panel according to the present invention. Before converting an initial response square wave signal based on the current display temperature in step S10, the driving method further includes:

[0104] Step A10 , obtaining a driving cycle for driving the display panel at a current moment, an initial driving voltage output during the driving cycle, and an initial response time for outputting the initial driving voltage.

[0105] The screen driver board in this embodiment will dynamically obtain the driving cycle of the display panel at the current moment, the driving voltage output during the driving cycle, and the response time of outputting the driving voltage. Based on the obtained driving cycle, driving voltage, and response time at the current moment, the driving state of the liquid crystal molecules at the current moment is determined, and it is determined at what driving voltage and response time the liquid crystal molecules at the current moment are driven, which is conducive to subsequent rapid judgment.

[0106] Step A20 : generating the initial response square wave signal based on the driving cycle, the initial driving voltage, and the initial response time, and outputting the initial response square wave signal to a temperature detection module.

[0107] After obtaining the driving state of the liquid crystal molecules at the current moment, a corresponding initial response square wave signal is directly generated according to the driving state of the liquid crystal molecules. Specifically, in this embodiment, after obtaining the driving cycle for driving the liquid crystal molecules to flip at the current moment, the initial driving voltage output during the driving cycle, and the initial response time of outputting the initial driving voltage through the screen driving board, a GPIO (General-purpose input / output) port of the screen driving board is used as an initial response square wave signal generating port. The obtained driving cycle, initial driving voltage, and initial response time are passed through the GPIO port to generate a corresponding initial response square wave signal. Because the GPIO port serving as the square wave signal generating port in this embodiment is connected to the input port of the temperature detection module, the initial response square wave signal generated through the GPIO port will be output to the temperature detection module. Because the initial response square wave signal includes the initial driving voltage, when the initial response square wave signal is output to the input port of the temperature detection module, the initial driving voltage in the initial response square wave signal will be used as the input driving voltage of the input port of the temperature detection module.

[0108] The generated initial response square wave signal enables technicians to conveniently observe the driving state of the liquid crystal molecules at the current moment, with a higher degree of directness and visibility.

[0109] Step A30 : after the temperature detection module detects the current display temperature of the display panel at the current moment, executing the step of converting the initial response square wave signal based on the current display temperature.

[0110] It should be noted that the temperature detection module can perform real-time detection of the display temperature of the display panel. This embodiment uses another GPIO port of the screen driver board to generate a target response square wave signal. The GPIO port that generates the target response square wave signal is connected to the output port of the temperature detection module.

[0111] After the initial response square wave signal is output to the temperature detection module, the temperature detection module will output the initial driving voltage in the initial response square wave signal as the output driving voltage on the output port of the temperature detection module based on the detected current display temperature. The screen driver board will use another GPIO port connected to the output port of the temperature detection module to detect the output driving voltage on the output port of the temperature detection module, detect the change state of the output driving voltage in the driving cycle, and whether the output driving voltage reaches the preset driving voltage and the voltage maintenance time after reaching the preset driving voltage (i.e., the response time), so as to confirm the response time that can ensure the normal flipping of the liquid crystal molecules at the current display temperature.

[0112] Optionally, in step S10, the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal includes:

[0113] Step S101, after the initial response square wave signal is received by the temperature detection module, the initial driving voltage of the initial response square wave signal is used as the input driving voltage of the temperature detection module, the output driving voltage output by the temperature detection module based on the input driving voltage is identified, and the voltage rise of the output driving voltage in the driving cycle is obtained.

[0114] After the screen driver board outputs the initial response square wave signal generated at the current moment to the input port of the temperature detection module, because the temperature detection module in this embodiment is an RC integration circuit, the temperature detection module will use the initial driving voltage in the initial response square wave signal as the input driving voltage of the temperature detection module. The input driving voltage passes through the RC integration circuit, and the output driving voltage generated by the input driving voltage will be transformed according to the resistance value in the RC integration circuit. The larger the resistance value, the longer the transformation time for the output driving voltage to reach the preset driving voltage. At this time, the screen driver board will perform real-time detection and identification of the output driving voltage through the GPIO port connected to the output port of the temperature detection module, identify whether the output driving voltage based on the input driving voltage reaches the preset driving voltage, and obtain the voltage rise of the output driving voltage during the driving cycle.

[0115] Step S102 , when it is identified that the output driving voltage is equal to the preset driving voltage, the voltage when the output driving voltage is equal to the preset driving voltage is used as the target driving voltage, and the voltage maintenance time of the target driving voltage is determined according to the voltage rise.

[0116] It should be noted that the preset driving voltage is set according to the input driving voltage. The preset driving voltage is set to be equal to or less than the input driving voltage according to the actual voltage rise state at each display temperature. When some display temperatures are too low or too high, in order to avoid the conversion failure caused by the output driving voltage being unable to reach the preset driving voltage due to the setting of the input driving voltage, the preset driving voltage will be set to a voltage value lower than the input driving voltage to avoid the situation where the liquid crystal molecules cannot be flipped due to the conversion failure.

[0117] When the screen driver board identifies through the GPIO port connected to the output port of the temperature detection module that the output driving voltage on the output port of the temperature detection module is equal to the preset driving voltage, the output driving voltage equal to the preset driving voltage is used as the target driving voltage, and the target driving voltage is determined based on the voltage rising process of the obtained output driving voltage rising to the preset driving voltage in the driving cycle corresponding to the input driving voltage, that is, the voltage maintenance time of the preset driving voltage, and the target response time required for the liquid crystal molecules to flip at the current display temperature is determined based on the voltage maintenance time.

[0118] For example, Figure 3 For example, the voltage rise situation SQW3 of the output driving voltage obtained by the screen driver board during the driving cycle is that the output driving voltage gradually rises to the preset driving voltage Vo during the duration T1, and maintains the preset driving voltage for the duration T2. ​​Then Vo is the target driving voltage, and the duration T2 is the voltage maintenance duration, that is, the target response duration.

[0119] Step S103 : generating the target response square wave signal based on the driving cycle, the target driving voltage, and the voltage maintaining time.

[0120] After obtaining the target driving voltage and voltage maintenance time at the current display temperature at the current moment, a corresponding target response square wave signal is directly generated according to the driving cycle of the input driving voltage, the target driving voltage and the voltage maintenance time. Specifically, in this embodiment, after obtaining the voltage information of the output driving voltage on the output port of the temperature detection module at the current display temperature through the screen driving board, based on the target driving voltage, voltage maintenance time and driving cycle of the input driving voltage in the voltage information, another GPIO port of the screen driving board is used as the target response square wave signal generating port, and the obtained target driving voltage, voltage maintenance time and driving cycle of the input driving voltage are passed through the GPIO port to generate a corresponding target response square wave signal.

[0121] The generated target response square wave signal enables technicians to directly and visually determine the response time required to drive the liquid crystal molecules to perform normal flipping at the current display temperature.

[0122] In this embodiment, the initial response square wave signal and the target response square wave signal generated by the screen driver board enable technicians to easily observe the driving status of the liquid crystal molecules at the current moment and the response time required to drive the liquid crystal molecules for normal flipping at the current display temperature, thereby improving the directness and visibility of obtaining the driving information of the liquid crystal molecules.

[0123] Reference Figure 6 , Figure 6 2 is a flow chart of a third embodiment of a method for driving a display panel according to the present invention. Before determining the call requirement according to the target duty cycle in the target response square wave signal in step S20, the driving method further includes:

[0124] Step B10, returning to the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal, until the number of the target response square wave signals obtained is equal to the preset number of signals, and then determining the expected response time reflected by each target duty cycle based on the target duty cycle in the target response square wave signals.

[0125] Considering that there is a time difference between high and low changes in the displayed temperature, the current displayed temperature may only last for a negligible short period of time before switching to another displayed temperature. If the compensation voltage corresponding to the response time is called and compensated for the displayed temperature that only lasts for a negligible short period of time, erroneous calls may occur. Therefore, to avoid erroneous calls that may cause compensation errors during the display temperature change process, this embodiment proposes acquiring target response square wave signals of the displayed temperature at consecutive moments. A preset number of signals may be set to be acquired continuously. For example, after acquiring a preset number of target response square wave signals, the target duty cycle of each of the ten acquired target response square wave signals is then determined to reflect the expected response time of each target response square wave signal. Because the expected response time corresponds to the displayed temperature, the display temperature range within which each target response square wave signal lies can be determined based on the determined expected response time. This allows determination of whether the acquired target response square wave signals are all within the same display temperature range, thereby identifying transient display temperature changes.

[0126] Step B20 , when it is determined that all the estimated response times are within the same display temperature range, executing the step of determining the call requirement based on the target duty cycle in the target response square wave signal.

[0127] When it is determined that the expected response times corresponding to the obtained target response square wave signals are all in the same display temperature range, it is determined that there is no sudden change in display temperature, that is, there is no compensation error caused by miscall, so step S20 can be executed at this time.

[0128] Step B30, when it is determined that the estimated response times are not within the same display temperature range, executing the step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal; or

[0129] When it is determined that the expected response times corresponding to the various target response square wave signals obtained do not exist in the same display temperature range, it means that there are one or more temperature sudden changes in the obtained target response square wave signal. In this case, the compensation voltage may be compensated incorrectly because the display temperature changes too quickly. At this time, the moment corresponding to the obtained target response square wave signal is directly driven according to the target driving voltage in the target response square wave signal, and a new target response square wave signal is obtained again.

[0130] Step B40, after selecting a target response square wave signal that meets the preset response square wave signal condition from each of the target response square wave signals as the target response direction signal in the next process of determining whether each of the expected response times is in the same display temperature range, execute the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal, wherein the preset response square wave signal condition is that the display temperature range in which the expected response time reflected by the target duty cycle of the last target response square wave obtained is the benchmark display temperature range, the display temperature range in which the expected response time reflected by the target duty cycle is the benchmark display temperature range, and there are other target response square wave signals that are continuous with the last target response square wave.

[0131] In another embodiment, when it is determined that the expected response times corresponding to the obtained target response square wave signals do not exist in the same display temperature interval, the display temperature interval in which the expected response time reflected by the target duty cycle of the last target response square wave can be obtained is used as the reference display temperature interval, and the display temperature interval in which the expected response time reflected by the target duty cycle is obtained in the 10 obtained target response square wave signals is used as the reference display temperature interval, and other target response square wave signals that are continuous with the last target response direction signal are used as the next time to determine whether the expected response times are all in the same display temperature interval. The target response direction signal in the process of displaying the temperature range, for example, among the acquired target response square wave signals ① to ⑩, the other target response square wave signals that are in the same display temperature range and continuous with the target response square wave signal ⑩ are the target response square wave signal ⑦, the target response square wave signal ⑧, the target response square wave signal ⑨ and the target response square wave signal ⑩, then the target response square wave signal ⑦, the target response square wave signal ⑧, the target response square wave signal ⑨ and the target response square wave signal ⑩ are used as the target response square wave signals in the process of determining whether each expected response time is in the same display temperature range for the next time, so the next re-acquisition of the target response square wave signal only requires obtaining 6 new target response square wave signals.

[0132] In this embodiment, by setting a preset number of signals to be obtained continuously, after the number of target response square wave signals of the preset number of signals is obtained continuously, the expected response time reflected by each target response square wave signal is determined for each target duty cycle in the obtained target response square wave signal, and the display temperature range of each target response square wave signal is determined according to the determined expected response time, so as to judge whether the several target response square wave signals obtained are all in the same display temperature range, thereby identifying short-term display temperature changes, and avoiding the situation where erroneous calls caused by sudden changes in display temperature lead to compensation errors.

[0133] Reference Figure 7 , Figure 7 1 is a schematic diagram of a module of a driving device for a display panel according to the present invention, wherein the driving device for a display panel comprises:

[0134] The conversion module 10 is used to convert the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents the duty cycle of the response duration within a preset driving period;

[0135] a determination module 20, configured to determine a call requirement based on a target duty cycle in the target response square wave signal;

[0136] The calling module 30 is configured to call a target response time parameter table that meets the calling requirement, and drive the display panel to operate at the current display temperature according to the target response time parameter table.

[0137] Specifically, refer to Figure 8 As shown, the conversion module is composed of a screen driving board TCON and a temperature detection module 10. The signal output end of the screen driving board TCON is connected to the input end of the temperature detection module 10 for transmitting the initial square wave signal to the temperature detection module 10. The signal input end of the screen driving board TCON is connected to the output end of the temperature detection module 10 for receiving the output driving voltage output by the temperature detection module 10.

[0138] The determining module and the calling module are included in the screen driving board TCON.

[0139] The conversion module is used to convert the response square wave signal and the input drive voltage, and uses the GPIO1 port of the screen driver board TCON as the initial response square wave signal generating port. The acquired drive cycle, initial drive voltage and initial response time are passed through the GPIO1 port to generate a corresponding initial response square wave signal. Because the GPIO1 port used as the square wave signal generating port in this embodiment is connected to the input end of the temperature detection module 10, the initial response square wave signal generated by the GPIO1 port will be output to the temperature detection module 10. Since the initial response square wave signal includes the initial drive voltage, it is actually the initial drive voltage in the initial response square wave signal. The input driving voltage Vi will be used as the input end of the temperature detection module 10, and the GPIO2 port of the screen driver board TCON will be used as the target response square wave signal generating port, and the GPIO2 port is connected to the output end of the temperature detection module 10. The screen driver board TCON can detect the output driving voltage Vo on the output end of the temperature detection module 10 through the GPIO2 port, and generate a corresponding target response square wave signal through the GPIO2 port according to the output driving voltage Vo detected to reach the preset driving voltage, the voltage maintenance time of the output driving voltage Vo reaching the preset driving voltage, and the driving cycle of the input driving voltage, and return it to the screen driver board TCON.

[0140] Furthermore, the temperature detection module 10 includes: a thermistor R1 and a capacitor C1;

[0141] One end of the thermistor R1 is connected to the signal output end of the screen driving board TCON, the other end of the thermistor R1 is connected to the signal input end of the screen driving board TCON, one end of the capacitor C1 is connected to the connecting line between the thermistor R1 and the signal input end, and the other end of the capacitor C1 is grounded.

[0142] Specifically, according to Figure 8 It can be seen that the temperature detection module 10 in this embodiment is an RC integration circuit, which uses the thermistor R1 in the RC integration circuit to reflect the display temperature of the display panel. When the input end of the RC integration circuit receives the initial driving voltage of the initial response square wave signal, the capacitor C1 inside the RC integration circuit begins to charge. At this time, the output driving voltage at the output end of the RC integration circuit changes exponentially.

[0143] When thermistor R1 is a negative characteristic thermistor, the formula of the RC integration circuit is Formula 1:

[0144]

[0145] Where Vo is the output drive voltage, Vi is the input drive voltage, RC is the resistance of the RC integrator circuit, and t' represents the time required for the output drive voltage to reach the preset drive voltage. As can be seen from Formula 1, t' is inversely proportional to RC. The lower the display temperature, the greater the resistance of thermistor R1, and the longer it takes to reach the preset drive voltage.

[0146] When thermistor R1 is a positive characteristic thermistor, the formula of the RC integration circuit is formula 2:

[0147] Vo=Vi(RC)*t'————Formula 2

[0148] Where Vo is the output drive voltage, Vi is the input drive voltage, RC is the resistance of the RC integrator circuit, and t' represents the time required for the output drive voltage to reach the preset drive voltage. From Formula 2, we can see that t' is proportional to RC. The lower the display temperature, the smaller the resistance of thermistor R1, and the shorter the time it takes to reach the preset drive voltage.

[0149] In this embodiment, the display temperature of the display panel is detected by an RC integration circuit, which can reduce the cost of speeding up the response speed of each pixel to the input display signal at various temperatures to a certain extent. By combining the RC integration circuit with the screen driver board TCON, the target response square wave signal at each display temperature can be dynamically acquired. Based on the acquired target response square wave signal, the dynamic response time parameter table is acquired, thereby realizing dynamic driving voltage compensation.

[0150] In addition, the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned display panel driving method are implemented.

[0151] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0152] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0153] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods of various embodiments of the present invention.

[0154] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for driving a display panel, characterized in that: The driving method of the display panel comprises the following steps: Converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of the response duration within a preset driving period; Determining a call requirement according to a target duty cycle in the target response square wave signal; calling a target response time parameter table that meets the calling requirement, and driving the display panel at the current display temperature to operate according to the target response time parameter table; Before the step of converting the initial response square wave signal based on the current display temperature, the driving method further includes: Acquiring a driving cycle for driving the display panel at a current moment, an initial driving voltage output during the driving cycle, and an initial response time for outputting the initial driving voltage; generating the initial response square wave signal based on the driving period, the initial driving voltage, and the initial response time, and outputting the initial response square wave signal to a temperature detection module; After the current display temperature of the display panel at the current moment is detected by the temperature detection module, the step of converting the initial response square wave signal based on the current display temperature is performed.

2. The method for driving a display panel according to claim 1, wherein: The step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal includes: After the temperature detection module receives the initial response square wave signal, using the initial driving voltage of the initial response square wave signal as the input driving voltage of the temperature detection module, identifying the output driving voltage output by the temperature detection module based on the input driving voltage, and obtaining a voltage rise of the output driving voltage during the driving cycle; When it is recognized that the output driving voltage is equal to the preset driving voltage, the voltage at which the output driving voltage is equal to the preset driving voltage is used as the target driving voltage, and a voltage maintenance time of the target driving voltage is determined according to the voltage rise condition; The target response square wave signal is generated based on the driving period, the target driving voltage, and the voltage maintaining time.

3. The method for driving a display panel according to claim 1, wherein: Before the step of determining the call requirement according to the target duty cycle in the target response square wave signal, the driving method further includes: Returning to the step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, until the number of the obtained target response square wave signals equals a preset number of signals, and determining the expected response time reflected by each target duty cycle based on the target duty cycles in the target response square wave signals; In the case where it is determined that the estimated response times are all within the same display temperature range, performing the step of determining the call demand according to the target duty cycle in the target response square wave signal; If it is determined that the predicted response times are not within the same display temperature range, performing the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal; or After selecting a target response square wave signal that meets the preset response square wave signal condition from each of the target response square wave signals as the target response direction signal in the next process of determining whether each of the expected response times is in the same display temperature range, the step of converting the initial response square wave signal based on the current display temperature to obtain the target response square wave signal is executed, wherein the preset response square wave signal condition is that the display temperature range in which the expected response time reflected by the target duty cycle of the last target response square wave obtained is the benchmark display temperature range, the display temperature range in which the expected response time reflected by the target duty cycle is the benchmark display temperature range, and there are other target response square wave signals that are continuous with the last target response square wave.

4. The method for driving a display panel according to claim 2, wherein: The step of determining the call requirement according to the target duty cycle in the target response square wave signal includes: determining an expected response time for driving the display panel to operate at the current display temperature according to the target duty cycle; Determining a preset response time can reflect the calling requirement of the response time parameter table of the expected response time.

5. The method for driving a display panel according to claim 4, wherein: The step of calling a target response time parameter table that meets the calling requirement and driving the display panel at the current display temperature to operate according to the target response time parameter table includes: Filtering the response time parameter table based on the calling requirement to obtain and call the target response time parameter table that meets the calling requirement; The target response time parameter table is queried to obtain a compensation voltage of the target driving voltage, the target driving voltage is compensated based on the compensation voltage, and the display panel is driven to operate according to the compensated target driving voltage.

6. A display panel, characterized in that: The display panel includes a display panel driving device, a memory, a processor, and a computer processing program stored in the memory and executable on the processor. When the processor executes the computer processing program, the steps of the display panel driving method according to any one of claims 1 to 5 are implemented. The display panel driving device includes: a conversion module, configured to convert an initial response square wave signal based on a current display temperature to obtain a target response square wave signal, wherein the response square wave signal represents a duty cycle of a response duration within a preset driving period; a determination module, configured to determine a call requirement based on a target duty cycle in the target response square wave signal; The calling module is used to call a target response time parameter table that meets the calling requirement, and drive the display panel at the current display temperature to operate according to the target response time parameter table.

7. The display panel according to claim 6, wherein: The conversion module is composed of a screen driving board and a temperature detection module. The signal output end of the screen driving board is connected to the input end of the temperature detection module, and is used to transmit the initial response square wave signal to the temperature detection module. The signal input end of the screen driving board is connected to the output end of the temperature detection module, and is used to receive the output driving voltage output by the temperature detection module. The determining module and the calling module are included in the screen driving board.

8. The display panel according to claim 7, wherein: The temperature detection module includes: a thermistor and a capacitor; One end of the thermistor is connected to the signal output end of the screen driver board, the other end of the thermistor is connected to the signal input end of the screen driver board, one end of the capacitor is connected to the connecting line between the thermistor and the signal input end, and the other end of the capacitor is grounded.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for driving a display panel according to any one of claims 1 to 5 are implemented.

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