Driving method, driving device and readable storage medium of display panel

Abstract

The application discloses a display panel driving method, a driving device and a readable storage medium, and relates to the technical field of display, which is characterized in that: an initial response square wave signal is converted based on a current display temperature to obtain a target response square wave signal; a target duty cycle in the target response square wave signal is used to determine a calling requirement, so as to determine a response duration corresponding to a normal output display picture of a liquid crystal display device at the current display temperature; a target response duration parameter table meeting the calling requirement is called; and the display panel at the current display temperature is driven according to the target response duration parameter table, so that the reaction speed of various pixel points to an input display signal at various temperatures is effectively accelerated, and the adverse situation that an animation picture is still blurred and ghosted due to the fact that different temperatures cannot be considered is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel driving method, driving device and readable storage medium. BACKGROUND

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

[0003] Among them, the display principle of liquid crystal display device is mainly realized by controlling the flip of liquid crystal molecules, and the response time of liquid crystal molecule flip 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 lighter the blur and ghosting of the dynamic picture displayed by the liquid crystal display device.

[0004] However, it is found in actual application that the response time of liquid crystal molecule flip is affected by the temperature of the liquid crystal display device. When the temperature is too high or too low, the response time of liquid crystal molecule flip will be lengthened, resulting in blurred and ghosted dynamic pictures. The existing adjustment of response time is generally to compensate the response time of liquid crystal molecule flip directly by a fixed compensation time to improve the blur and ghosting. However, the fixed compensation time can only effectively compensate the flip of liquid crystal molecules at a certain temperature. For liquid crystal molecules at other temperatures that are too different from the temperature, the compensation time cannot be considered, and thus the dynamic picture will still have obvious blur and ghosting. SUMMARY

[0005] The main purpose of the present application is to provide a display panel driving method, driving device and readable storage medium, which aims to solve the technical problem that the conventional response time adjustment scheme cannot consider the response time under different temperature conditions.

[0006] To achieve the above purpose, the present application provides a display panel driving method, which comprises the following steps:

[0007] Converting 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 the duty cycle of the response time in a predetermined driving period;

[0008] According to the target duty cycle in the target response square wave signal, a call requirement is determined;

[0009] A target response time parameter table meeting the call requirement is called, and the display panel at the current display temperature is driven 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 comprises:

[0011] obtaining a driving period for driving the display panel to work at the current time, an initial driving voltage output in the driving period, and an initial response duration 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 duration, and outputting the initial response square wave signal to a temperature detection module;

[0013] After the temperature detection module detects the current display temperature of the display panel at the current time, 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 a target response square wave signal comprises:

[0015] After the temperature detection module receives the initial response square wave signal, the initial driving voltage of the initial response square wave signal is taken as an input driving voltage of the temperature detection module, an output driving voltage output by the temperature detection module based on the input driving voltage is identified, and a voltage rising condition of the output driving voltage on the driving period is obtained;

[0016] In a case where the output driving voltage is equal to a preset driving voltage, a voltage when the output driving voltage is equal to the preset driving voltage is taken as a target driving voltage, and a voltage maintenance duration of the target driving voltage is determined according to the voltage rising condition;

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

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

[0019] The step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal is performed until a signal number of a plurality of target response square wave signals obtained is equal to a preset signal number, and a predicted response duration reflected by each target duty cycle is determined based on the target duty cycle in each of a plurality of target response square wave signals;

[0020] In a case where each predicted response duration is in a same display temperature interval, the step of determining the calling demand according to the target duty cycle in the target response square wave signal is performed.

[0021] In the case that the predicted response time length is not in the same display temperature interval, the step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal is performed; or,

[0022] After selecting a target response square wave signal meeting a preset response square wave signal condition from the target response square wave signals as a target response square wave signal in the process of judging whether the predicted response time length is in the same display temperature interval, the step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal is performed, wherein the preset response square wave signal condition is that a display temperature interval in which a predicted response time length reflected by a target duty cycle of a last obtained target response square wave is taken as a reference display temperature interval, and a display temperature interval in which a predicted response time length reflected by a target duty cycle is the reference display temperature interval and other target response square wave signals are continuous with the last target response square wave.

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

[0024] determining a predicted response time length of driving the display panel to work at the current display temperature according to the target duty cycle;

[0025] determining a response time length parameter table of a preset response time length capable of reflecting the predicted response time length according to the calling requirement.

[0026] Optionally, the step of calling a target response time length parameter table meeting the calling requirement and driving the display panel to work at the current display temperature according to the target response time length parameter table comprises:

[0027] filtering the response time length parameter table based on the calling requirement to obtain and call the target response time length parameter table meeting the calling requirement;

[0028] querying the target response time length 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 work according to the compensated target driving voltage.

[0029] The application further provides a display panel, which comprises 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 when executing the computer processing program, and the display panel driving device comprises:

[0030] The conversion module is configured 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 a duty cycle of a response time length within a preset driving period.

[0031] The determination module is configured to determine a calling requirement according to a target duty cycle in the target response square wave signal.

[0032] The calling module is configured to call a target response time length parameter table meeting the calling requirement and drive the display panel under the current display temperature according to the target response time length parameter table.

[0033] Optionally, the conversion module comprises a screen driving board and a temperature detection module, a signal output end of the screen driving board is connected with an input end of the temperature detection module, and the screen driving board is configured to transmit the initial square wave signal to the temperature detection module; and a signal input end of the screen driving board is connected with an output end of the temperature detection module, and the screen driving board is configured to receive an output driving voltage output by the temperature detection module.

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

[0035] Optionally, the temperature detection module comprises a thermistor and a capacitor.

[0036] One end of the thermistor is connected with the signal output end of the screen driving board, the other end of the thermistor is connected with the signal input end of the screen driving board, one end of the capacitor is connected with a 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 object, the application further provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the display panel driving method.

[0038] The application converts 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 time within a preset driving period, the target duty cycle in the target response square wave signal is used to determine the calling demand, so as to determine the response time corresponding to the normal output of the display picture of the liquid crystal display device at the current display temperature, the target response time parameter table meeting the calling demand is called, the display panel at the current display temperature is driven according to the target response time parameter table, the target response time parameter table capable of compensating the target driving voltage in the target response square wave signal is called according to the calling demand corresponding to the response time, 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 in the effective response time, effectively accelerating the reaction speed of each pixel point to the input display signal at various temperatures, and avoiding the adverse conditions of blurred and trailing animation pictures caused by the failure to consider different temperatures. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the terminal structure schematic diagram of the hardware running environment related to the embodiment scheme of the application.

[0040] Figure 2 It is the flowchart of the first embodiment of the driving method of the display panel of the application.

[0041] Figure 3 It is the square wave signal schematic diagram of the initial response square wave signal converted into the target response square wave signal.

[0042] Figure 4 It is the schematic diagram of calling different response time parameter tables based on different display temperatures in the application.

[0043] Figure 5 It is the flowchart of the second embodiment of the driving method of the display panel of the application.

[0044] Figure 6 It is the flowchart of the third embodiment of the driving method of the display panel of the application.

[0045] Figure 7 It is the module structure schematic diagram of the driving device of the display panel of the application.

[0046] Figure 8 It is the connection structure schematic diagram of the screen driving board and the temperature detection module.

[0047] Explanation of the drawings:

[0048] Reference Name TCON Screen driving board 10 Temperature detection module R1 Thermistor C1 Capacitor

[0049] The objectives, functional features and advantages of the present application will be further illustrated in conjunction with the embodiments, with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

[0051] As shown in Figure 1 , Figure 1 is a terminal structure schematic diagram of a hardware running environment involved in the embodiment scheme of the present application.

[0052] The driving method of the display panel in the embodiment of the present application applies a carrier as a display panel, as shown in Figure 1 , the display panel can include a processor 1001, for example, a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. The communication bus 1002 is used to realize the connection and communication between the components. The user interface 1003 can include a display area (Display) and an input unit such as a keyboard (Keyboard). The optional user interface 1003 can also include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a WI-FI interface). The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory) such as a magnetic disk memory. The memory 1005 can also be an independent storage device from the aforementioned processor 1001.

[0053] Optionally, the display panel can also include a camera, an RF (Radio Frequency, radio frequency) circuit, a sensor, an audio circuit, a WiFi module, and the like. Among them, the sensor can include a light sensor, a motion sensor, and other sensors. Specifically, the light sensor can include an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display screen according to the brightness of the ambient light, and the proximity sensor can turn off the display screen and / or the backlight when the mobile terminal is moved to the ear. As a kind of motion sensor, the gravity acceleration sensor can detect the size of acceleration in each direction (generally three axes), and can detect the size and direction of gravity when at rest, which can be used for identifying the posture of the mobile terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, knocking), and the like. Of course, the mobile terminal can also be configured with a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and other sensors, which will not be described here.

[0054] Those skilled in the art can understand that Figure 1The display panel structure shown in the figures does not constitute a limitation on the display panel, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

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

[0056] In the terminal shown in Figure 1 The network interface 1004 is mainly used to connect to the background server and communicate data with the background 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] Based on the initial response square wave signal converted according to the current display temperature, a target response square wave signal is obtained, wherein the response square wave signal represents the duty cycle of the response time within a preset driving period;

[0058] According to the target duty cycle in the target response square wave signal, a calling requirement is determined;

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

[0060] Further, the processor 1001 can call the computer program stored in the memory 1005 and further perform the following operations:

[0061] Before the step of converting the initial response square wave signal according to the current display temperature, a driving period for driving the display panel to work at the current time, an initial driving voltage output in the driving period, and an initial response time for outputting the initial driving voltage are obtained;

[0062] The initial response square wave signal is generated based on the driving period, the initial driving voltage and the initial response time, and is output to the temperature detection module;

[0063] After the temperature detection module detects the current display temperature of the display panel at the current time, the step of converting the initial response square wave signal according to the current display temperature is performed.

[0064] Further, the processor 1001 can call the computer program stored in the memory 1005 and further perform the following operations:

[0065] The step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal comprises: after receiving the initial response square wave signal by the temperature detection module, taking an initial driving voltage of the initial response square wave signal as an input driving voltage of the temperature detection module, identifying an output driving voltage output by the temperature detection module based on the input driving voltage, and obtaining a voltage rising condition of the output driving voltage in the driving period;

[0066] In a case where the output driving voltage is equal to the preset driving voltage, taking a voltage when the output driving voltage is equal to the preset driving voltage as a target driving voltage, and determining a voltage maintenance time length of the target driving voltage according to the voltage rising condition;

[0067] Generating the target response square wave signal based on the driving period, the target driving voltage, and the voltage maintenance time length.

[0068] Further, the processor 1001 can invoke the computer program stored in the memory 1005, and further perform the following operations:

[0069] Before the step of determining the invocation demand according to the target duty cycle in the target response square wave signal, returning to perform 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 signal number of the obtained several target response square wave signals is equal to a preset signal number, and then determining an expected response time length reflected by each target duty cycle based on the target duty cycle in the several target response square wave signals respectively;

[0070] In a case where each of the expected response time lengths is in the same display temperature interval, performing the step of determining the invocation demand according to the target duty cycle in the target response square wave signal;

[0071] In a case where each of the expected response time lengths is not in the same display temperature interval, performing 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,

[0072] After selecting a target response square wave signal meeting a preset response square wave signal condition from each of the target response square wave signals as a target response square wave signal in a process of judging whether each of the predicted response durations is in the same display temperature interval, 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 performed, wherein the preset response square wave signal condition is that a display temperature interval in which a predicted response duration reflected by a target duty cycle of a last obtained target response square wave is taken as a reference display temperature interval, and a display temperature interval in which a predicted response duration reflected by a target duty cycle is the reference display temperature interval and other target response square wave signals are continuous with the last target response square wave.

[0073] Further, the processor 1001 can invoke the computer program stored in the memory 1005, and further perform the following operations:

[0074] The step of determining the invocation requirement according to the target duty cycle in the target response square wave signal includes determining a predicted response duration of driving the display panel to work at the current display temperature according to the target duty cycle.

[0075] The invocation requirement is determined for a response duration parameter table in which a preset response duration can reflect the predicted response duration.

[0076] Further, the processor 1001 can invoke the computer program stored in the memory 1005, and further perform the following operations:

[0077] The step of invoking the target response duration parameter table meeting the invocation requirement and driving the display panel to work at the current display temperature according to the target response duration parameter table includes: screening the response duration parameter table based on the invocation requirement to obtain and invoke the target response duration parameter table meeting the invocation requirement.

[0078] The compensation voltage of the target driving voltage is obtained by querying the target response duration parameter table, the target driving voltage is compensated based on the compensation voltage, and the display panel is driven to work according to the compensated target driving voltage.

[0079] Referring to Figure 2 , Figure 2 is a flowchart of a first embodiment of a display panel driving method of the present application, and the display panel driving method includes the following steps:

[0080] In step S10, an initial response square wave signal is converted based on a current display temperature to obtain a target response square wave signal, wherein a response square wave signal represents a duty cycle of a response duration in a preset driving period.

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

[0082] In the embodiment, after detecting the current display temperature at the current time 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 in the normal temperature is determined again according to the current display temperature, the target response time of the liquid crystal molecules in the current display temperature is determined, and the initial response square wave signal is converted to the target response square wave signal. Figure 3 For example, assuming that SQW1 is an initial response square wave signal with a period of 3.2 microseconds, a high level (initial response time) maintained for 1.2 microseconds (37.5% of a single period), and a voltage of Vi / 0, after determining the current display temperature, the initial response square wave signal is converted based on the current display temperature, the driving voltage at the current display temperature that can enable the liquid crystal molecules to flip is determined, the time of maintaining the driving voltage is determined as the high level, and the initial response square wave signal is converted to the target response square wave signal according to the following formula: Figure 3 It can be known that the converted target response square wave signal is a target response square wave signal with a period of 3.2 microseconds, a high level (target response time) maintained for 0.8 microseconds (25% of a single period), and a voltage of Vo / 0, which realizes dynamic change of the target response time of the liquid crystal molecules based on the real-time display temperature, so as to realize optimal response time configuration in all temperature ranges.

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

[0084] In step S20, the calling demand is determined according to the target duty cycle in the target response square wave signal.

[0085] Still taking Figure 3 For example, after obtaining the target duty cycle 25% in the target response square wave signal, the expected response time of the liquid crystal molecules to normally flip at the current display temperature is determined according to the target duty cycle 25%, and the expected response time can ensure that the display screen of the liquid crystal molecules flipping has no phenomenon of blur and ghosting.

[0086] After determining the expected response duration of the liquid crystal molecules to normally flip at the current display temperature, a determination is made of a calling requirement of a response duration parameter table in which a preset response duration is consistent with the expected response duration, so as to directly acquire the response duration parameter table consistent with the calling requirement from a memory in which a plurality of response duration parameter tables are stored based on the calling requirement.

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

[0088] In step S201, the expected response duration of driving the display panel to work at the current display temperature is determined according to the target duty cycle.

[0089] In step S202, the calling requirement of the response duration parameter table in which the preset response duration can reflect the expected response duration is determined.

[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 acquired, that is, the target response duration required for the liquid crystal molecules to flip at the current display temperature, for example Figure 3 SQW2 in the target response square wave signal, the target duty cycle 25% of SQW2 is acquired, and the calling requirement of the related target response duration required for the current liquid crystal molecules to flip is determined to be the response duration parameter table 0 according to the 25%.

[0091] It should be noted that, taking Figure 4 for example, assuming that the display temperature in the case where the target duty cycle is 25% is detected to be 10℃-25℃, the calling requirement is determined according to the target duty cycle 25% at this time, and in this embodiment, the calling requirement determined according to the target duty cycle 25% is the response duration parameter table 0.

[0092] When the target duty cycle is detected to decrease from 25% to 20% when the display temperature decreases to the display temperature interval of -5℃-10℃ in the subsequent operation process of the display panel, the determination of the calling demand is performed according to the target duty cycle 20% at this time, and in the embodiment, the calling demand determined according to the target duty cycle 20% is the response time parameter table 2. Then, when the detection is continued in the operation process of the display panel, the target duty cycle is detected to decrease from 20% to 15% when the display temperature decreases to the display temperature interval of -20℃-5℃, the determination of the calling demand is performed according to the target duty cycle 15% at this time, and in the embodiment, the calling demand determined according to the target duty cycle 15% is the response time parameter table 1. In this way, when the display temperature decreases to another display temperature interval and the target duty cycle also decreases to the target duty cycle corresponding to another display temperature, the new calling demand is determined based on the target duty cycle corresponding to another display temperature interval, so as to ensure that the liquid crystal molecules can be quickly flipped in a low-temperature environment, and the phenomenon of blurred and trailing display screen caused by the liquid crystal molecules not being flipped in time due to low temperature is avoided.

[0093] Or, when the target duty cycle is detected to increase from 25% to 30% when the display temperature increases to the display temperature interval of 25℃-40℃ in the subsequent operation process of the display panel, the determination of the calling demand is performed according to the target duty cycle 30% at this time, and in the embodiment, the calling demand determined according to the target duty cycle 30% is the response time parameter table 3. Then, when the detection is continued in the operation process of the display panel, the target duty cycle is detected to increase from 30% to 35% when the display temperature increases to the display temperature interval of 40℃-55℃, the determination of the calling demand is performed according to the target duty cycle 35% at this time, and in the embodiment, the calling demand determined according to the target duty cycle 35% is the response time parameter table 4, and so on. The calling demand is dynamically determined according to the target duty cycle converted according to the current display temperature, so as to obtain the response time parameter table which can meet the normal flipping of the liquid crystal molecules in a high-temperature environment, and the targeted compensation is performed.

[0094] In step S30, the target response time parameter table meeting the calling demand is called, and the display panel at the current display temperature is driven according to the target response time parameter table.

[0095] Because the target driving voltage Vo in the target response wave signal is a preset driving voltage set based on the initial driving voltage Vi, the purpose is to determine the time length of reaching the preset driving voltage and maintaining the preset driving voltage at the current display temperature, that is, the predicted response time length, and in order to enable the liquid crystal molecules to flip in the predicted response time length, the initial driving voltage must be unable to reach, so the embodiment will call the target response time length parameter table meeting the calling demand of the predicted response time length based on the predicted response time length after determining the predicted response time length, so as to obtain the compensation voltage capable of driving the liquid crystal molecules to flip in the predicted response time length in the target response time length parameter table.

[0096] Specifically, after determining the calling demand, the target response time length parameter table meeting the calling demand is directly called from the storage having the response time length parameter table according to the calling demand, and the preset driving voltage, that is, the target driving voltage, is compensated according to the compensation voltage in the target response time length parameter table, so that the target driving voltage after compensation can drive the liquid crystal molecules to flip in the predicted response time length, and the display panel is driven to work based on the driving voltage after compensation, effectively accelerating the reaction speed of each pixel point to the input display signal at various temperatures, and avoiding the adverse situation that the blurred and trailing animation picture still exists due to the inability to consider different temperatures.

[0097] Optionally, the step of calling the target response time length parameter table meeting the calling demand and driving the display panel at the current display temperature to work according to the target response time length parameter table in step S30 comprises:

[0098] Step S301: filtering the response time length parameter table based on the calling demand to obtain and call the target response time length parameter table meeting the calling demand.

[0099] In the embodiment, after the screen driving board determines the calling demand, the screen driving board filters the response time length parameter table in the storage based on the calling demand, so as to filter and call the target response time length parameter table meeting the determined calling demand in the storage, and realize effective and high-accuracy flipping of the liquid crystal molecules.

[0100] Step S302: querying the target response time length parameter table to obtain the compensation voltage of the target driving voltage, compensating the target driving voltage based on the compensation voltage, and driving the display panel to work according to the target driving voltage after compensation.

[0101] The target response time parameter table is queried, and the compensation voltage required for the predicted response time of the liquid crystal molecules at the current display temperature is obtained. Then, the target driving voltage is compensated by the compensation voltage, so that the liquid crystal molecules can be driven by the compensated target driving voltage to flip within the predicted response time, and the display picture is clear and free of ghosting, avoiding the non-targeted compensation of the compensation voltage obtained based on the single response time parameter table, which cannot effectively ensure the liquid crystal molecules to flip within the predicted response time.

[0102] In the embodiment, the 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 a response time within a preset driving period. According to a target duty cycle in the target response square wave signal, a calling demand is determined to determine a response time corresponding to normal output of a display picture of the liquid crystal display device at the current display temperature. A target response time parameter table meeting the calling demand is called, and the display panel at the current display temperature is driven according to the target response time parameter table. According to the calling demand corresponding to the response time, a target response time parameter table capable of compensating a target driving voltage in the target response square wave signal is called. The target driving voltage is compensated according to a 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 an effective response time. The reaction speed of each pixel point to the input display signal at various temperatures is effectively accelerated, and the adverse conditions of blurred and ghosted animation pictures caused by different temperatures are avoided.

[0103] Reference Figure 5 , Figure 5 is a flowchart of the second embodiment of the display panel driving method of the present application. Before the step of converting the initial response square wave signal based on the current display temperature in step S10, the driving method further comprises:

[0104] In step A10, the driving period for driving the display panel to work, the initial driving voltage output in the driving period, and the initial response time of outputting the initial driving voltage at the current time are obtained.

[0105] The screen driving board in the embodiment dynamically obtains the driving period for driving the display panel to work, the driving voltage output in the driving period, and the response time of outputting the driving voltage at the current time. Based on the obtained driving period, driving voltage, and response time at the current time, the driving state of the liquid crystal molecules at the current time is determined, and it is determined that the liquid crystal molecules at the current time are driven by what driving voltage and what response time, which is beneficial to subsequent rapid determination.

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

[0107] After obtaining the driving state of the liquid crystal molecules at the current time, the corresponding initial response square wave signal is directly generated according to the driving state of the liquid crystal molecules. Specifically, in the embodiment, after obtaining the driving period of the driving liquid crystal molecules for flipping at the current time, the initial driving voltage output in the driving period and the initial response duration of the initial driving voltage output by 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 generation port. The driving period, the initial driving voltage and the initial response duration obtained generate a corresponding initial response square wave signal through the GPIO port. Because the GPIO port for generating the square wave signal in the embodiment is connected with the input port of the temperature detection module, the initial response square wave signal generated through the GPIO port is output to the temperature detection module. Because the initial driving voltage is included in the initial response square wave signal, the initial driving voltage in the initial response square wave signal is actually used as the input driving voltage of the input port of the temperature detection module when the initial response square wave signal is output to the input port of the temperature detection module.

[0108] The generated initial response square wave signal can facilitate technicians to conveniently observe the driving state of the driving liquid crystal molecules at the current time, and the degree of directness and visibility is higher.

[0109] Step A30, after detecting the current display temperature of the display panel at the current time by the temperature detection module, performing 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 detect the display temperature of the display panel in real time. In the embodiment, another GPIO port of the screen driving board is used to generate a target response square wave signal. The GPIO port for generating the target response square wave signal is connected with the output port of the temperature detection module.

[0111] When 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 an output driving voltage on the output port of the temperature detection module based on the detected current display temperature, and the screen driving board will detect the output driving voltage on the output port of the temperature detection module by using another GPIO port connected to the output port of the temperature detection module, detect the change state of the output driving voltage on the driving period, and determine whether the output driving voltage reaches the preset driving voltage and the voltage maintenance time length (i.e. the response time length) after reaching the preset driving voltage, so as to confirm the response time length that can ensure the normal flipping of the liquid crystal molecules under the current display temperature.

[0112] 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 in step S10 comprises:

[0113] In step S101, after the temperature detection module receives the initial response square wave signal, the initial driving voltage of the initial response square wave signal is taken 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 rising of the output driving voltage on the driving period is obtained.

[0114] After the screen driving board outputs the initial response square wave signal generated at the current time 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 take 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 greater the resistance value, the longer the transformation time length of the output driving voltage reaching the preset driving voltage. At this time, the screen driving board will detect and identify the output driving voltage in real time by using 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 rising of the output driving voltage on the driving period.

[0115] In 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 taken as the target driving voltage, and the voltage maintenance time length of the target driving voltage is determined according to the voltage rising.

[0116] It should be noted that the preset driving voltage is set according to the input driving voltage, and the preset driving voltage is set to be equal to or less than the input driving voltage according to the actual voltage rising state at each display temperature. When some display temperature is too low or too high, in order to avoid the transformation failure caused by the output driving voltage failing to reach the preset driving voltage due to being set to the input driving voltage, the preset driving voltage is set to a voltage value lower than the input driving voltage at this time, avoiding the situation that the liquid crystal molecules cannot be flipped due to the transformation failure.

[0117] When the screen driving board recognizes that the output driving voltage on the output port of the temperature detection module through the GPIO port connected with 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 taken as the target driving voltage at this time, and the target driving voltage, i.e. the voltage maintenance time length of the preset driving voltage, is determined according to 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, based on which the target response time length required for the liquid crystal molecules to flip at the current display temperature is determined.

[0118] For example, taking Figure 3 For example, the voltage rising situation SQW3 of the output driving voltage on the driving cycle obtained by the screen driving board is that the output driving voltage gradually rises to the preset driving voltage Vo in T1 time length, and then the preset driving voltage is maintained for T2 time length, then Vo is the target driving voltage, and T2 time length is the voltage maintenance time length, i.e. the target response time length.

[0119] In step S103, the target response square wave signal is generated based on the driving cycle, the target driving voltage and the voltage maintenance time length.

[0120] After obtaining the target driving voltage and the voltage maintenance time length at the current display temperature at the current time, the 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 length. Specifically, in this embodiment, after the screen driving board obtains the voltage information of the output driving voltage on the output port of the temperature detection module at the current display temperature, the target driving voltage, the voltage maintenance time length and the driving cycle of the input driving voltage in the voltage information are used to generate a target response square wave signal through another GPIO port of the screen driving board as a target response square wave signal generation port. The target driving voltage, the voltage maintenance time length and the driving cycle of the input driving voltage are generated into a corresponding target response square wave signal through the GPIO port.

[0121] The generated target response square wave signal can enable the technician to directly and visually obtain the response time length required for driving the liquid crystal molecules to normally flip at the current display temperature.

[0122] In the embodiment, the initial response square wave signal and the target response square wave signal generated by the screen driving board can facilitate the technician to conveniently observe the driving state of the liquid crystal molecules at the current time and the response time length required for the liquid crystal molecules to normally flip under the current display temperature, thereby improving the directness and visibility of the driving information of the liquid crystal molecules.

[0123] With reference to Figure 6 , Figure 6 is a flowchart of a third embodiment of a display panel driving method, and before the step of determining the calling demand according to the target duty cycle in the target response square wave signal in step S20, the driving method further comprises:

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

[0125] Considering that the display temperature conversion has a time difference, the current display temperature may be switched to another display temperature only after a short and negligible time period, and if the calling and compensation of the compensation voltage corresponding to the response time length of the display temperature lasting only a short and negligible time period are performed, the mis-calling condition may exist. Therefore, in order to avoid the compensation error caused by the mis-calling existing in the display temperature change process, the embodiment proposes to obtain the target response square wave signal of the display temperature at the continuous time, and a preset signal number of continuous acquisition can be set, for example, after the number of target response square wave signals of 10 preset signal numbers is continuously acquired, the expected response time length reflected by each target response square wave signal is determined based on the target duty cycle in the 10 target response square wave signals, respectively. Because the expected response time length corresponds to the display temperature, the display temperature interval of each target response square wave signal can be determined according to the determined expected response time length, so as to judge whether the several obtained target response square wave signals are in the same display temperature interval, and to identify the short-term display temperature conversion.

[0126] Step B20, in the case that the expected response time lengths are all in the same display temperature interval, perform the step of determining the calling demand according to the target duty cycle in the target response square wave signal.

[0127] When it is determined that the expected response time lengths corresponding to the obtained target response square wave signals are all in the same display temperature interval, it is determined that there is no sudden change of the display temperature, i.e. there is no mis-calling leading to compensation error. Therefore, the step of step S20 can be performed at this time.

[0128] Step B30, in the case that the expected response time length of each of the predicted response square wave signals is not in the same display temperature interval, performing 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 time length corresponding to each of the obtained target response square wave signals does not exist in the same display temperature interval, it indicates that the obtained target response square wave signal has one or more temperature jumps. In this case, the compensation of the compensation voltage may be incorrect due to the rapid change of the display temperature. Therefore, the time 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 the acquisition of the new target response square wave signal is re-performed.

[0130] Step B40, after selecting the target response square wave signal meeting the preset response square wave signal condition as the target response square wave signal in the next process of determining whether the expected response time length of each of the predicted response square wave signals is in the same display temperature interval, performing the step of converting the initial response square wave signal based on the current display temperature to obtain a target response square wave signal, wherein the preset response square wave signal condition is that the display temperature interval in which the expected response time length reflected by the target duty cycle of the last obtained target response square wave signal is the reference display temperature interval, the display temperature interval in which the expected response time length reflected by the target duty cycle is the reference display temperature interval, and other target response square wave signals continuous to the last target response square wave signal.

[0131] In another embodiment, when it is judged that the expected response duration corresponding to each of the acquired target response square wave signals does not exist in the same display temperature interval, the display temperature interval in which the expected response duration reflected by the target duty cycle of the last acquired target response square wave signal is located is taken as the reference display temperature interval, the display temperature interval in which the expected response duration reflected by the target duty cycle is located in the acquired 10 target response square wave signals is taken as the reference display temperature interval, and other target response square wave signals that can be continuous with the last target response square wave signal are taken as the target response square wave signals in the next process of judging whether each expected response duration is in the same display temperature interval, for example, in the acquired ①-⑩ target response square wave signals, the other target response square wave signals that are in the same display temperature interval as the ⑩ target response square wave signal and are continuous with the ⑩ target response square wave signal are the ⑦ target response square wave signal, the ⑧ target response square wave signal and the ⑨ target response square wave signal, then the ⑦ target response square wave signal, the ⑧ target response square wave signal, the ⑨ target response square wave signal and the ⑩ target response square wave signal are taken as the target response square wave signals in the next process of judging whether each expected response duration is in the same display temperature interval, so that the reacquisition of the next target response square wave signal only needs to acquire 6 new target response square wave signals.

[0132] In the embodiment, by setting a preset number of continuously acquired signals, after the number of target response square wave signals of the preset number of signals is continuously acquired, the expected response duration reflected by each target duty cycle in the acquired target response square wave signals is determined respectively, the display temperature interval in which each target response square wave signal is located is determined according to the determined expected response duration, and whether the acquired several target response square wave signals are in the same display temperature interval is judged, so as to identify the transient display temperature change and avoid the case that the compensation error is caused by the false calling due to the sudden change of the display temperature.

[0133] Reference Figure 7 , Figure 7 is a schematic diagram of a module of a driving device of a display panel, and the driving device of the display panel comprises:

[0134] A conversion module 10 is 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 in a preset driving period.

[0135] A determination module 20 is configured to determine a calling demand according to 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 meeting the calling requirement, and drive the display panel at the current display temperature according to the target response time parameter table.

[0137] Specifically, referring to Figure 8 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 with the input end of the temperature detection module 10, and is configured to transmit the initial square wave signal to the temperature detection module 10. The signal input end of the screen driving board TCON is connected with the output end of the temperature detection module 10, and is configured to receive 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 configured to convert the response square wave signal and convert the input driving voltage. The GPIO1 port of the screen driving board TCON is configured as an initial response square wave signal generation port. The driving period, the initial driving voltage and the initial response time are obtained, and an initial response square wave signal corresponding to the initial response square wave signal is generated via the GPIO1 port. Since the GPIO1 port configured as the square wave signal generation port is connected with the input end of the temperature detection module 10, the initial response square wave signal generated via the GPIO1 port is output to the temperature detection module 10. Since the initial driving voltage is included in the initial response square wave signal, the initial driving voltage in the initial response square wave signal is actually used as the input driving voltage Vi of the input end of the temperature detection module 10. The GPIO2 port of the screen driving board TCON is configured as a target response square wave signal generation port. The GPIO2 port is connected with the output end of the temperature detection module 10. The screen driving board TCON can detect the output driving voltage Vo on the output end of the temperature detection module 10 via the GPIO2 port, and generate a target response square wave signal corresponding to the output driving voltage Vo reaching the preset driving voltage, the voltage maintenance time of the output driving voltage Vo reaching the preset driving voltage and the driving period of the input driving voltage via the GPIO2 port, and return the target response square wave signal to the screen driving board TCON.

[0140] Further, the temperature detection module 10 includes a thermistor R1 and a capacitor C1.

[0141] One end of the thermistor R1 is connected with the signal output end of the screen driving board TCON. The other end of the thermistor R1 is connected with the signal input end of the screen driving board TCON. One end of the capacitor C1 is connected with the connection line between the thermistor R1 and the signal input end. The other end of the capacitor C1 is grounded.

[0142] Specifically, according to Figure 8 As can be seen, the temperature detection module 10 in this embodiment is an RC integrator circuit. The thermistor R1 in the RC integrator circuit reflects the display temperature of the display panel. When the input terminal of the RC integrator circuit receives the initial driving voltage of the initial response square wave signal, the capacitor C1 inside the RC integrator circuit starts to charge. At this time, the output driving voltage at the output terminal of the RC integrator circuit changes exponentially.

[0143] When the thermistor R1 is a negative characteristic thermistor, the formula for the RC integrator 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 displayed temperature, the larger the resistance of the thermistor R1, and the longer the time to reach the preset drive voltage.

[0146] When the thermistor R1 is a positive characteristic thermistor, the formula for the RC integrator 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. As can be seen from Formula 2, t' is proportional to RC. The lower the displayed temperature, the smaller the resistance of the thermistor R1, and the shorter the time to reach the preset drive voltage.

[0149] In this embodiment, the display temperature of the display panel is detected by an RC integral circuit, which can reduce the cost of accelerating the response speed of each pixel to the input display signal at various temperatures to a certain extent. By combining the RC integral 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 can be obtained, thereby realizing dynamic compensation of the driving voltage.

[0150] Furthermore, the present invention also proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-described display panel driving method.

[0151] It should be noted that, in this document, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0152] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0153] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and the necessary general hardware platform, of course, they can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a number of instructions for making a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device) execute the methods of the various embodiments of the present application.

[0154] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the specification and drawings of the present application, is also included in the patent protection scope of the present application.

Claims

1. A driving method for a display panel, characterized in that, The driving method for the display panel includes the following steps: Based on the current display temperature conversion initial response square wave signal, the target response square wave signal is obtained, where the response square wave signal represents the duty cycle of the response duration within a preset driving cycle; The call requirement is determined based on the target duty cycle in the target response square wave signal; Call the target response duration parameter table that meets the call requirements, and drive the display panel at the current display temperature to work according to the target response duration parameter table; Prior to the step of converting the initial response square wave signal based on the current displayed temperature, the driving method further includes: At the current moment, obtain the driving cycle that drives the display panel, the initial driving voltage output within the driving cycle, and the initial response time for outputting the initial driving voltage; The initial response square wave signal is generated based on the driving cycle, the initial driving voltage, and the initial response duration, and the initial response square wave signal is output to the temperature detection module. After the temperature detection module detects the current display temperature of the display panel at the current moment, it executes the step of converting the initial response square wave signal based on the current display temperature.

2. The driving method for the display panel as described in claim 1, characterized in that, The step of obtaining the target response square wave signal based on the initial response square wave signal of the current display temperature conversion includes: After receiving the initial response square wave signal through 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 during the driving cycle is obtained. When it is detected that the output drive voltage is equal to the preset drive voltage, the voltage at which the output drive voltage is equal to the preset drive voltage is taken as the target drive voltage, and the voltage maintenance duration of the target drive voltage is determined according to the voltage rise. The target response square wave signal is generated based on the driving cycle, the target driving voltage, and the voltage maintenance duration.

3. The driving method for the display panel as described in claim 1, characterized in that, Before the step of determining the call requirement based on the target duty cycle in the target response square wave signal, the driving method further includes: Return 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 signals of the acquired target response square wave signals is equal to the preset number of signals, and then determine the expected response time reflected by each target duty cycle based on the target duty cycle in the target response square wave signals respectively; If it is determined that all the expected response times are within the same display temperature range, the step of determining the call requirement based on the target duty cycle in the target response square wave signal is executed. If it is determined that the expected response times are not within 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 performed; or, Among the target response square wave signals, a target response square wave signal that meets the preset response square wave signal conditions is selected as the target response square wave signal in the next process of determining whether the expected response durations of each target response square wave are all within the same display temperature range. Then, 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. The preset response square wave signal conditions are: the display temperature range in which the expected response duration reflected by the target duty cycle of the last target response square wave is located is the reference display temperature range; the display temperature range in which the expected response duration reflected by the target duty cycle is located is the reference display temperature range; and other target response square wave signals that are continuous with the last target response square wave are also included.

4. The driving method for the display panel as described in claim 2, characterized in that, The step of determining the call requirement based on the target duty cycle in the target response square wave signal includes: The expected response time for driving the display panel to operate at the current display temperature is determined based on the target duty cycle. Determining the preset response duration can reflect the call requirements of the response duration parameter table that reflects the expected response duration.

5. The driving method for the display panel as described in claim 4, characterized in that, The step of calling the target response duration parameter table that meets the calling requirements, and driving the display panel to work at the current display temperature according to the target response duration parameter table, includes: Based on the call requirements, the response duration parameter table is filtered to obtain and call the target response duration parameter table that meets the call requirements; The compensation voltage of the target driving voltage is obtained by querying the target response time parameter table. The target driving voltage is compensated based on the compensation voltage, and the display panel is driven to work according to the compensated target driving voltage.

6. A display panel, characterized in that, The display panel includes a driving device for the display panel, 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, it implements the steps of the driving method for the display panel according to any one of claims 1 to 5. The driving device for the display panel includes: The conversion module is used to convert the initial response square wave signal based on the current displayed temperature to obtain the target response square wave signal, wherein the response square wave signal represents the duty cycle of the response duration within a preset driving cycle; The determination module is used to determine the call requirement based on the target duty cycle in the target response square wave signal; The calling module is used to call the target response duration parameter table that meets the calling requirements, and drive the display panel to work at the current display temperature according to the target response duration parameter table.

7. The display panel as described in claim 6, characterized in that, The conversion module consists of a screen driver board and a temperature detection module. The signal output terminal of the screen driver board is connected to the input terminal of the temperature detection module for transmitting the initial response square wave signal to the temperature detection module. The signal input terminal of the screen driver board is connected to the output terminal of the temperature detection module for receiving the output drive voltage output by the temperature detection module. The determining module and the calling module are included in the screen driver board.

8. The display panel as described in claim 7, characterized in that, The temperature detection module includes: a thermistor and a capacitor; One end of the thermistor is connected to the signal output terminal of the screen driver board, and the other end of the thermistor is connected to the signal input terminal of the screen driver board. One end of the capacitor is connected to the connection line between the thermistor and the signal input terminal, 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 that, when executed by a processor, implements the steps of the driving method for the display panel according to any one of claims 1 to 5.

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