CN117809587A - Display control method, display module and computer readable storage medium - Google Patents

Abstract

The invention discloses a display control method, a display module and a computer readable storage medium, which relate to the technical field of display, and the invention relates to the technical field of display.

Description

Display control method, display module and computer readable storage medium

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display control method, a display module, and a computer readable storage medium.

Background

In the current LCD industry, VA display technology is vertical alignment, liquid crystal molecules are aligned perpendicular to a polarizer, and in order to deflect the liquid crystal molecules in the same direction under the action of an electric field, a pretilt angle is set for the liquid crystal molecules during production, and the larger the pretilt angle is, the smaller the angle of the liquid crystal molecules to deflect is, and the faster the response time is.

However, because the pretilt angle is generally set according to the normal temperature requirement and the set pretilt angle cannot be changed, when the liquid crystal molecules are driven in a high-temperature environment, the rotation speed of the liquid crystal molecules is increased at high temperature, the speed of the liquid crystal molecules for completing the angle required to deflect is increased, and the response time of the liquid crystal molecules is too short, so that the edge of a display picture is whitened; when the liquid crystal molecules are driven in a low-temperature environment, the rotation speed of the liquid crystal molecules is delayed at a low temperature, the angle of the liquid crystal molecules for completing the angle required to deflect is slowed down, the response time of the liquid crystal molecules is too long, and the defect of display picture smear is caused.

Disclosure of Invention

The invention mainly aims to provide a display control method, a display module and a computer readable storage medium, which aim to solve the technical problem of abnormal display defect caused by abnormal response time of liquid crystal molecules in a normal temperature environment.

In order to achieve the above object, the present invention provides a display control method, including the steps of:

when a preset temperature interval in which the current ambient temperature is located is detected, calling a voltage difference signal corresponding to the preset temperature interval;

and changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal so as to adjust the pretilt angle of the liquid crystal molecules before entering the display driving stage.

Optionally, before the step of detecting a preset temperature interval in which the current ambient temperature is located, the display control method further includes:

acquiring a temperature voltage value reflected by the current ambient temperature through a temperature compensation circuit, and determining an ambient temperature value according to the temperature voltage value;

the method comprises the steps of obtaining a magnitude relation between the environment temperature value and a first preset temperature value and/or a second preset temperature value, and determining the preset temperature interval in which the current environment temperature is located based on the magnitude relation, wherein the first preset temperature value is smaller than the second preset temperature value.

Optionally, the preset temperature interval includes a first temperature interval, a second temperature interval, and a third temperature interval, and the step of determining the preset temperature interval in which the current ambient temperature is located based on the magnitude relation includes:

if the magnitude relation is that the environmental temperature value is smaller than the first preset temperature value, determining that the current environmental temperature is in the first temperature interval; or alternatively, the first and second heat exchangers may be,

if the magnitude relation is that the environmental temperature value is larger than the first preset temperature value and smaller than the second preset temperature value, determining that the current environmental temperature is in the second temperature interval; or alternatively, the first and second heat exchangers may be,

And if the magnitude relation is that the environmental temperature value is larger than the second preset temperature value, determining that the current environmental temperature is in the third temperature interval.

Optionally, the step of calling a voltage difference signal corresponding to the preset temperature interval includes:

invoking a first voltage difference signal corresponding to the first temperature interval;

the step of adjusting the pretilt angle of the liquid crystal molecules before entering the display driving stage by changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal comprises the following steps:

and under the condition that the voltage difference signal is a first voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a first voltage volt value based on the first voltage difference signal, so as to adjust the pretilt angle to a first pretilt angle.

Optionally, the step of calling a voltage difference signal corresponding to the preset temperature interval includes:

invoking a second voltage difference signal corresponding to the second temperature interval;

the step of adjusting the pretilt angle of the liquid crystal molecules before entering the display driving stage by changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal comprises the following steps:

And under the condition that the voltage difference signal is a second voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a second voltage volt value based on the second voltage difference signal, so as to adjust the pretilt angle to a second pretilt angle.

Optionally, the step of calling a voltage difference signal corresponding to the preset temperature interval includes:

invoking a third voltage difference signal corresponding to the third temperature interval;

the step of adjusting the pretilt angle of the liquid crystal molecules before entering the display driving stage by changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal comprises the following steps:

and under the condition that the voltage difference signal is a third voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a third voltage volt value based on the third voltage difference signal, so as to adjust the pretilt angle to a third pretilt angle.

Optionally, before the step of calling the voltage difference signal corresponding to the preset temperature interval when the preset temperature interval where the current ambient temperature is detected, the display control method further includes:

determining the preset temperature interval, and debugging a first end voltage value and a second end voltage value of the liquid crystal molecules in the preset temperature interval until the pretilt angle corresponding to the voltage difference between the first end voltage value and the second end voltage value enables the response time of the liquid crystal molecules in the display driving stage to be in a preset response time interval.

The invention also provides a display module, the display module comprises a backlight module and a display panel, the backlight module comprises a logic control board, the logic control board is applied to the display control method, and the logic control board comprises:

the temperature detection module is connected to the logic control board based on communication connection and is used for detecting a preset temperature interval where the current environment temperature is;

the logic control board is used for calling a voltage difference signal corresponding to a preset temperature interval when detecting the preset temperature interval in which the current ambient temperature is located;

and the gamma chip is connected into the logic control board based on communication connection and is used for changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal so as to adjust the pretilt angle of the liquid crystal molecules before entering the display driving stage.

Optionally, the logic control board further comprises a temperature compensation circuit;

the voltage end of the temperature compensation circuit is connected with the voltage detection end of the temperature detection module and is used for changing the voltage value on the voltage end according to the current environment temperature so that the temperature detection module can acquire the temperature voltage value reflected by the current environment temperature based on the voltage value;

The temperature compensation circuit comprises a temperature sensitive resistor, a first resistor and a second resistor;

the temperature-sensitive resistor is connected with the first resistor in parallel, one end of the second resistor is connected to a connecting line of the temperature-sensitive resistor and the first resistor, and the other end of the second resistor is connected to the voltage end.

In addition, in order to achieve the above object, the present invention also provides a computer-readable storage medium having stored thereon a computer processing program which, when executed by a processor, implements the steps of the display control method as described above.

The invention provides a display control method, when detecting the preset temperature interval of the current environment temperature, a logic control board in a display module invokes a voltage difference signal corresponding to the preset temperature interval, changes the voltage difference value between two ends of liquid crystal molecules based on the voltage difference signal to adjust the pretilt angle of the liquid crystal molecules before entering a display driving stage, and detects the current environment temperature of the operation environment of the display module in real time under the operation state of the display module to judge whether the current environment temperature is a normal temperature environment or a non-normal temperature environment or not, so as to determine the voltage difference signal which needs to be invoked and corresponds to the environment temperature to adjust the voltage difference value between two ends of the liquid crystal molecules, wherein the pretilt angle corresponding to the voltage difference signal under the high temperature environment is smaller than the pretilt angle under the normal temperature environment, so that the deflection angle is larger when the liquid crystal molecules are driven, and the response time is prolonged; the pretilt angle corresponding to the voltage difference signal under the low-temperature environment is larger than that under the normal-temperature environment, so that the deflection angle is smaller when the voltage difference signal is driven, the response time is shortened, and the phenomenon of abnormal display under the abnormal-temperature environment is solved.

Drawings

FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a flowchart of a first embodiment of a display control method according to the present invention;

FIG. 3 is a schematic diagram showing a state where the liquid crystal molecules are not set with pretilt angles;

FIG. 4 is a schematic diagram showing the deflection of liquid crystal molecules under the action of an electric field;

fig. 4 (1) is a schematic diagram showing a state where the liquid crystal molecules are provided with a pretilt angle;

FIG. 4 (2) is a schematic diagram showing a state of liquid crystal molecules under the action of an electric field;

FIG. 5 is a flow chart illustrating a first adjustment procedure of a second embodiment of the control method according to the present invention;

FIG. 6 is a flow chart illustrating a second adjustment situation of a second embodiment of the display control method according to the present invention;

FIG. 7 is a flow chart illustrating a third adjustment procedure of the second embodiment of the control method according to the present invention;

FIG. 8 is a flowchart illustrating a third embodiment of a control method according to the present invention;

FIG. 9 is a schematic block diagram of a logic control board of the present invention;

fig. 10 is a schematic diagram of a temperature compensation circuit according to the present invention.

Reference numerals illustrate:

the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1, fig. 1 is a schematic diagram of a terminal structure of a hardware running environment according to an embodiment of the present invention.

The terminal of the present invention is a display module, as shown in fig. 1, where the display module may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., 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 also optionally be a storage device separate from the processor 1001 described above.

Optionally, the display module may further include an RF (Radio Frequency) circuit, a sensor, a WiFi module, and the like. Among them, sensors such as light sensor, motion sensor and others are not described herein.

It will be appreciated by those skilled in the art that the display module structure shown in fig. 1 is not limiting and may include more or fewer components than shown, or may be combined with certain components, or may be arranged in a different arrangement of components.

As shown in fig. 1, an operating system, a network communication module, a user interface module, and a computer processing program may be included in the memory 1005, which is a type of computer storage medium.

In the display module shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a computer processing program stored in the memory 1005 and perform the following operations:

when a preset temperature interval in which the current ambient temperature is located is detected, calling a voltage difference signal corresponding to the preset temperature interval;

and changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal so as to adjust the pretilt angle of the liquid crystal molecules before entering the display driving stage.

Further, the processor 1001 may call a computer processing program stored in the memory 1005, and further perform the following operations:

before the step of detecting a preset temperature interval in which the current ambient temperature is located, acquiring a temperature voltage value reflected by the current ambient temperature through a temperature compensation circuit, and determining an ambient temperature value according to the temperature voltage value;

The method comprises the steps of obtaining a magnitude relation between the environment temperature value and a first preset temperature value and/or a second preset temperature value, and determining the preset temperature interval in which the current environment temperature is located based on the magnitude relation, wherein the first preset temperature value is smaller than the second preset temperature value.

Further, the processor 1001 may call a computer processing program stored in the memory 1005, and further perform the following operations:

the step of determining the preset temperature interval in which the current ambient temperature is based on the magnitude relation comprises the following steps: if the magnitude relation is that the environmental temperature value is smaller than the first preset temperature value, determining that the current environmental temperature is in the first temperature interval; or if the magnitude relation is that the environmental temperature value is larger than the first preset temperature value and smaller than the second preset temperature value, determining that the current environmental temperature is in the second temperature interval; or if the magnitude relation is that the environmental temperature value is larger than the second preset temperature value, determining that the current environmental temperature is in the third temperature interval.

Further, the processor 1001 may call a computer processing program stored in the memory 1005, and further perform the following operations:

The step of calling the voltage difference signal corresponding to the preset temperature interval comprises the following steps: invoking a first voltage difference signal corresponding to the first temperature interval;

a step of adjusting a pretilt angle of the liquid crystal molecules before entering a display driving stage by varying a voltage difference between both ends of the liquid crystal molecules based on the voltage difference signal, comprising: and under the condition that the voltage difference signal is a first voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a first voltage volt value based on the first voltage difference signal, so as to adjust the pretilt angle to a first pretilt angle.

Further, the processor 1001 may call a computer processing program stored in the memory 1005, and further perform the following operations:

the step of calling the voltage difference signal corresponding to the preset temperature interval comprises the following steps: invoking a second voltage difference signal corresponding to the second temperature interval;

a step of adjusting a pretilt angle of the liquid crystal molecules before entering a display driving stage by varying a voltage difference between both ends of the liquid crystal molecules based on the voltage difference signal, comprising: and under the condition that the voltage difference signal is a second voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a second voltage volt value based on the second voltage difference signal, so as to adjust the pretilt angle to a second pretilt angle.

Further, the processor 1001 may call a computer processing program stored in the memory 1005, and further perform the following operations:

the step of calling the voltage difference signal corresponding to the preset temperature interval comprises the following steps: invoking a third voltage difference signal corresponding to the third temperature interval;

a step of adjusting a pretilt angle of the liquid crystal molecules before entering a display driving stage by varying a voltage difference between both ends of the liquid crystal molecules based on the voltage difference signal, comprising: and under the condition that the voltage difference signal is a third voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a third voltage volt value based on the third voltage difference signal, so as to adjust the pretilt angle to a third pretilt angle.

Further, the processor 1001 may call a computer processing program stored in the memory 1005, and further perform the following operations:

before the step of calling a voltage difference signal corresponding to a preset temperature interval when the preset temperature interval in which the current ambient temperature is located is detected, determining the preset temperature interval, and debugging a first end voltage value and a second end voltage value of the liquid crystal molecules on the preset temperature interval until the pretilt angle corresponding to a voltage difference value between the first end voltage value and the second end voltage value enables the response time of the liquid crystal molecules in the display driving stage to be within a preset response time interval.

Referring to fig. 2, in a first embodiment of the present invention, the display control includes the steps of:

step S10, when a preset temperature interval in which the current ambient temperature is located is detected, a voltage difference signal corresponding to the preset temperature interval is called.

Step S20, changing the voltage difference between the two ends of the liquid crystal molecule based on the voltage difference signal, so as to adjust the pretilt angle of the liquid crystal molecule before entering the display driving stage.

Referring to fig. 3, fig. 3 is a state in a VA-LC (Vertical Alignment-Liquid Crystal) layer in the case where a pretilt angle is not set for Liquid Crystal molecules. As can be seen from fig. 3, the VA (Vertical Alignment ) display technology is vertical alignment, the liquid crystal molecules (i.e. ellipses in fig. 3) are aligned perpendicular to the polarizer, the phase difference of the light in this state is 0, the light leakage is small, and the contrast ratio is high.

However, in practical applications, the pretilt angle of the liquid crystal molecules is shown in fig. 4 (1), so that the liquid crystal molecules deflect in the same direction under the action of an electric field. As can be taken from (2) in fig. 4, the liquid crystal molecules deflect under the action of the electric field (i.e., V in fig. 4), and the larger the pretilt angle of the liquid crystal molecules is, the smaller the angle difference between the liquid crystal molecules and the target deflection angle is, and the shorter the corresponding time period for reaching the target deflection angle, i.e., the response time period. Wherein 30 in fig. 3 and 4 is a glass substrate in which a polarizer is disposed.

The pretilt angle of the liquid crystal molecules cannot be changed after the production, so that in order to meet most of conventional use scenes, the pretilt angle of the liquid crystal molecules is generally set according to normal temperature requirements, and no consideration is given to the very normal temperature requirements, and the rotation speed of the liquid crystal molecules is affected by the ambient temperature. When the liquid crystal molecules run in a high-temperature environment, the high temperature accelerates the rotation speed of the liquid crystal molecules, the response time of the liquid crystal molecules is too long on the basis of the preset inclination angle, and the defect that the edge of a display picture is whitened exists; when the liquid crystal molecules run in a low-temperature environment, the low temperature can slow down the rotation speed of the liquid crystal molecules at the moment, so that the rotation speed of the liquid crystal molecules is slower than the rotation speed at normal temperature, the response time of the liquid crystal molecules can be too long, and the phenomenon that a display picture is smeared exists.

In order to solve the above problems, the embodiment proposes a solution that, based on the voltage difference between the voltage values respectively output by the gamma 7 pin and the gamma 8 pin on the gamma chip, the liquid crystal molecules are deflected, and after the display module is powered on, real-time detection of the current ambient temperature is performed, and in the preset temperature interval where the current ambient temperature is detected, the corresponding voltage difference signal is invoked according to the preset temperature interval, and the voltage difference signal is output to the gamma chip, so that the gamma chip dynamically adjusts the voltage values on the gamma 7 pin and the gamma 8 pin, and the voltage difference between the two ends of the liquid crystal molecules is changed, the liquid crystal molecules are deflected, namely, the pretilt angle is adjusted, so that the time when the adjusted pretilt angle reaches the target deflection angle can be prolonged, the response time is prolonged, the prolonged response time can be equivalent to the response time under the normal temperature environment, or the time when the liquid crystal molecules reach the target deflection angle under the low temperature environment is shortened, the response time is shortened, the shortened response time can be equivalent to the response time under the normal temperature environment, the abnormal display phenomenon of the display equipment under the normal temperature environment is avoided, which is caused by the fact that the response time under the normal temperature environment is excessively different from the response time under the normal temperature environment.

The reason for setting the pretilt angle adjustment before the liquid crystal molecules enter the display driving stage is to ensure the timeliness of the driving display of the liquid crystal molecules, and avoid the display defect of display delay caused by untimely adjustment of angle adjustment after the liquid crystal molecules are driven in the display driving stage.

Optionally, before the step of detecting a preset temperature interval in which the current ambient temperature is located in step S10, the display control method further includes:

step S101, obtaining a temperature voltage value reflected by the current ambient temperature through a temperature compensation circuit, and determining an ambient temperature value according to the temperature voltage value.

It should be noted that, in this embodiment, by adding a temperature compensation circuit to the logic control board of the display module, the logic control board can obtain the current environmental temperature of the operating environment where the display device is located through the temperature compensation circuit, so as to realize real-time detection of the current environmental temperature.

Specifically, the temperature-sensitive resistor on the temperature compensation circuit dynamically changes the resistance value according to the current ambient temperature, so that the temperature-sensitive resistor is correspondingly changed to be output to the logic control board, the temperature voltage value of the current ambient temperature can be reflected, and the logic control board directly determines the ambient temperature value of the current ambient temperature according to the temperature voltage value.

Step S102, obtaining a magnitude relation between the environmental temperature value and a first preset temperature value and/or a second preset temperature value, and determining the preset temperature interval in which the current environmental temperature is located based on the magnitude relation, wherein the first preset temperature value is smaller than the second preset temperature value.

In this embodiment, a first preset temperature value and a second preset temperature value are set for comparing with an ambient temperature value, where the first preset temperature value is used to determine whether the ambient temperature value is a low temperature, the second preset temperature value is used to determine whether the ambient temperature value is a high temperature, and a preset temperature interval where the current ambient temperature is located, that is, a low temperature interval, a normal temperature interval or a high temperature interval, can be determined by acquiring a magnitude relation between the ambient temperature value and the first preset temperature value and the second preset temperature value, so that the liquid crystal molecules are deflected according to a voltage difference signal corresponding to the corresponding preset temperature interval.

Optionally, after the step of detecting the preset temperature interval in which the current ambient temperature is located in step S10, the display control method further includes:

Step S103, generating the environmental temperature information of the preset temperature interval in which the current environmental temperature is located. The step of determining the preset temperature interval in which the current ambient temperature is based on the magnitude relation comprises the following steps:

step S104, if the magnitude relation is that the ambient temperature value is smaller than the first preset temperature value, determining that the current ambient temperature is in the first temperature interval.

When the logic control board obtains according to the magnitude relation between the ambient temperature value and the first preset temperature value and the second preset temperature value, the judgment result that the ambient temperature value is smaller than the first preset temperature value indicates that the current ambient temperature is the low-temperature ambient temperature (namely, the first temperature interval).

Step S105, if the magnitude relation is that the ambient temperature value is greater than the first preset temperature value and less than the second preset temperature value, determining that the current ambient temperature is in the second temperature interval.

When the logic control board obtains according to the magnitude relation between the ambient temperature value and the first preset temperature value and the second preset temperature value, the ambient temperature value is larger than the first preset temperature value and smaller than the judgment result of the second preset temperature value, which indicates that the current ambient temperature is between the low-temperature ambient temperature (i.e. the first temperature interval) and the high-temperature ambient temperature (i.e. the third temperature interval), the current ambient temperature is determined as the normal-temperature ambient temperature (i.e. the second temperature interval).

Step S106, if the magnitude relation is that the ambient temperature value is greater than the second preset temperature value, determining that the current ambient temperature is in the third temperature interval.

When the logic control board is obtained according to the magnitude relation between the ambient temperature value and the first preset temperature value and the second preset temperature value, the ambient temperature value is larger than the judgment result of the second preset temperature value, and the current ambient temperature is the high-temperature ambient temperature.

It should be noted that, in this example, the first temperature interval, the second temperature interval, and the third temperature interval may be set according to an actual application scenario, and each temperature interval is provided with a corresponding voltage difference signal when being set in an early stage, where the voltage difference signal may ensure that the liquid crystal molecules have response durations that differ slightly in different temperature intervals.

In this embodiment, when a logic control board in the display module detects a preset temperature interval in which a current environmental temperature is located, a voltage difference signal corresponding to the preset temperature interval is invoked, the voltage difference value between two ends of a liquid crystal molecule is changed based on the voltage difference signal, so as to adjust the pretilt angle of the liquid crystal molecule before the liquid crystal molecule enters a display driving stage, in the running state of the display module, the current environmental temperature of the running environment in which the display module is located is detected in real time, so as to determine whether the current environmental temperature in which the display module is located is a normal temperature environment or a non-normal temperature environment, and therefore, the voltage difference signal which needs to be invoked and corresponds to the environmental temperature is determined to adjust the voltage difference value between two ends of the liquid crystal molecule, and the pretilt angle corresponding to the voltage difference signal in the high temperature environment is smaller than the pretilt angle in the normal temperature environment, so that the deflection angle when the liquid crystal molecule is driven is larger, and the response time is prolonged; the pretilt angle corresponding to the voltage difference signal under the low-temperature environment is larger than that under the normal-temperature environment, so that the deflection angle is smaller when the voltage difference signal is driven, the response time is shortened, and the phenomenon of abnormal display under the abnormal-temperature environment is solved.

Further, based on the first embodiment of the display control method of the present invention described above, a second embodiment of the display control method of the present invention is proposed.

Referring to fig. 5, 6 and 7, in the second embodiment of the display control method of the present invention, three adjustment cases are provided for the pretilt angle of the liquid crystal molecules before entering the display driving stage.

Referring to fig. 5, the first adjustment case is:

step A1, calling a first voltage difference signal corresponding to the first temperature interval;

and step A2, adjusting the voltage difference between two ends of the liquid crystal molecules to a first voltage volt value based on the first voltage difference signal under the condition that the voltage difference signal is the first voltage difference signal, so as to adjust the pretilt angle to a first pretilt angle.

When the logic control board determines that the current ambient temperature is in a first temperature interval based on the magnitude relation, namely, the current ambient temperature is a low-temperature ambient temperature, a first voltage difference signal which is set corresponding to the first temperature interval is directly called at the moment.

The logic control board sets voltages on two ends of the liquid crystal molecules based on the first voltage difference signal, so that the voltage difference between the voltages on the two ends is equal to a first voltage volt value corresponding to the first voltage difference signal, and the liquid crystal molecules are deflected through the first voltage volt value, so that the pre-tilt angle after deflection is the first pre-tilt angle.

The first pretilt angle can ensure that the liquid crystal molecules keep a response time which is not different from that of the normal temperature environment temperature under the condition of low temperature environment temperature after entering the display driving stage.

Referring to fig. 6, the second adjustment case is:

step B1, calling a second voltage difference signal corresponding to the second temperature interval;

and B2, adjusting the voltage difference between two ends of the liquid crystal molecules to a second voltage volt value based on the second voltage difference signal under the condition that the voltage difference signal is the second voltage difference signal, so as to adjust the pretilt angle to a second pretilt angle.

When the logic control board determines that the current ambient temperature is in a second temperature interval based on the magnitude relation, namely, when the current ambient temperature is normal-temperature ambient temperature, a second voltage difference signal which is arranged corresponding to the second temperature interval is directly invoked at the moment.

The logic control board sets the voltages on the two ends of the liquid crystal molecules based on the second voltage difference signals, so that the voltage difference between the voltages on the two ends is equal to a second voltage volt value corresponding to the second voltage difference signals, and the liquid crystal molecules are deflected through the second voltage volt value, so that the pre-tilt angle after deflection is a second pre-tilt angle.

The second pretilt angle can ensure that the response time of the display picture is ensured to be normal under the condition of normal temperature environment after the liquid crystal molecules enter the display driving stage.

Referring to fig. 7, the third adjustment case is:

step C1, calling a third voltage difference signal corresponding to the third temperature interval;

and step C2, adjusting the pretilt angle to a third pretilt angle by adjusting a voltage difference between two ends of the liquid crystal molecules by a third voltage volt value based on the third voltage difference signal under the condition that the voltage difference signal is the third voltage difference signal.

When the logic control board determines that the current ambient temperature is in a third temperature interval based on the magnitude relation, namely, when the current ambient temperature is high-temperature ambient temperature, a third voltage difference signal which is arranged corresponding to the third temperature interval is directly called at the moment.

The logic control board sets voltages on two ends of the liquid crystal molecules based on the third voltage difference signal, so that the voltage difference between the voltages on the two ends is equal to a third voltage volt value corresponding to the third voltage difference signal, and the liquid crystal molecules are deflected through the third voltage volt value, so that the pre-tilt angle after deflection is a third pre-tilt angle.

The third pretilt angle can ensure that the liquid crystal molecules keep a response time which is not different from that of the normal temperature environment temperature at a high temperature environment temperature after entering the display driving stage.

In this embodiment, the pretilt angle is adjusted by calling the voltage difference signal corresponding to the temperature interval, so that the adjusted pretilt angle can ensure the display quality of the display screen.

Further, based on the above-described first embodiment of the display control method of the present invention, a third embodiment of the display control method of the present invention is proposed.

Referring to fig. 8, in a third embodiment of the display control method of the present invention, before the step of calling the voltage difference signal corresponding to the preset temperature interval when the preset temperature interval where the current ambient temperature is located is detected in the step S10, the display control method further includes:

step S107, determining the preset temperature interval, and debugging the first end voltage value and the second end voltage value of the liquid crystal molecule in the preset temperature interval until the pretilt angle corresponding to the voltage difference between the first end voltage value and the second end voltage value can enable the response duration of the liquid crystal molecule in the display driving stage to be within a preset response duration interval.

In the early setting stage, a plurality of different ambient temperature intervals are simulated, and the first end voltage value and the second end voltage value of the liquid crystal molecules are debugged in the simulated ambient temperature intervals, so that the liquid crystal molecules deflect on voltage difference values corresponding to the different first end voltage values and the different second end voltage values.

In this example, the ambient temperature intervals of three gears, i.e., the first temperature interval (- ≡5) corresponding to the low-temperature ambient temperature, a second temperature interval [5 ] corresponding to the ambient temperature, 30] and a third temperature interval corresponding to the high temperature ambient temperature (30, +++).

According to the historical environmental temperature values, the environmental temperature value with the highest numerical frequency of occurrence is selected from each temperature interval to serve as an analog temperature value, and the first terminal voltage value and the second terminal voltage value of the liquid crystal molecules are debugged on each analog temperature value.

Specifically, a target deflection angle and a response time interval in which a display picture is normal can be set, whether the response time of the liquid crystal molecules after the first end voltage value and the second end voltage value are debugged to reach the target deflection angle is in the response time interval or not is observed, and if the response time is in the response time interval, a voltage difference signal of a corresponding temperature interval is set according to a voltage difference value between the first end voltage value and the second end voltage value; if the response time is not in the response time interval, continuing to debug the first terminal voltage value and the second terminal voltage value according to the difference between the response time and the response time interval until the obtained response time is in the response time interval, so as to obtain voltage difference signals which can ensure the normal display picture in each environment temperature interval.

In this embodiment, the preset temperature interval is determined, and the first end voltage value and the second end voltage value of the liquid crystal molecules are debugged in the preset temperature interval until the pretilt angle corresponding to the voltage difference between the first end voltage value and the second end voltage value is reached, so that the response time of the liquid crystal molecules in the display driving stage is within the preset response time interval, and the normal voltage difference signal of the display picture can be ensured in each environment temperature interval.

Referring to fig. 9, the present invention further provides a display module including a backlight module and a display panel, the backlight module including a logic control board TCON applied to the display control method as described above, the logic control board TCON including:

the temperature detection module 10 is connected to the logic control board TCON based on communication connection, and is configured to detect a preset temperature interval where the current ambient temperature is located, where the temperature detection module 10 may be a PMIC (Power Management IC, power integrated management chip), and the PMIC is connected to the logic control board TCON manager through IIC (Inter-Integrated Circuit, integrated circuit bus) communication.

The logic control board TCON is configured to invoke a voltage difference signal corresponding to a preset temperature interval when detecting the preset temperature interval where the current ambient temperature is located.

The gamma chip 20 is connected to the logic control board TCON based on communication connection, such as IIC communication, and is configured to change a voltage difference between two ends of the liquid crystal molecule based on the voltage difference signal, so as to adjust a pretilt angle of the liquid crystal molecule before the liquid crystal molecule enters the display driving stage.

Referring to fig. 10, the logic control board TCON further includes a temperature compensation circuit, where a voltage end of the temperature compensation circuit is connected to a voltage detection end of the temperature detection module 10, and is configured to change a voltage value at the voltage end according to the current ambient temperature, so that the temperature detection module 10 obtains a temperature voltage value reflected by the current ambient temperature based on the voltage value.

Specifically, the voltage value at the voltage end of the temperature compensation circuit can reflect the temperature voltage value of the current ambient temperature, the rnic pin of the PMIC in this example is connected with the voltage end of the temperature compensation circuit, the voltage value at the voltage end is connected to perform temperature identification, after a preset temperature interval in which the ambient temperature value reflected by the voltage value is located is determined, temperature information of the preset temperature interval is sent to the logic control board TCON, the logic control board TCON calls a corresponding voltage difference signal according to the temperature information to the gamma chip 20, and the gamma chip 20 adjusts the voltage values at the gamma 7 pin and the gamma 8 pin according to the received voltage difference signal, so as to adjust the pretilt angle of the liquid crystal molecules.

The temperature compensation circuit comprises a temperature sensitive resistor Rt, a first resistor R1 and a second resistor R2;

the temperature-sensitive resistor Rt is connected with the first resistor R1 in parallel, one end of the second resistor R2 is connected to a connecting line of the temperature-sensitive resistor Rt and the first resistor R1, and the other end of the second resistor R2 is connected to the voltage end.

The current ambient temperature is obtained through the temperature sensitive resistor Rt, wherein the type of the temperature sensitive resistor Rt can be negative temperature coefficient resistor or positive temperature coefficient resistor. When the temperature-sensitive resistor is a negative temperature coefficient resistor, the resistance value of the temperature-sensitive resistor Rt is inversely proportional to the environmental temperature value, and the higher the environmental temperature value is, the lower the resistance value is, and the higher the voltage value on the voltage terminal is; when the temperature-sensitive resistor is a positive temperature coefficient resistor, the resistance value of the temperature-sensitive resistor Rt is in direct proportion to the ambient temperature value, and the higher the ambient temperature value is, the higher the resistance value is and the lower the voltage value on the voltage terminal is. The PMIC recognizes the ambient temperature value by the change of the received voltage value.

The specific identification process may be to set the voltage value received on the PMIC, to correspond to three temperature intervals, to set three different voltage value intervals, assuming a negative temperature coefficient resistor, to set the voltage value on the first voltage value interval (- ≡vt—l) to be identified as the current ambient temperature being in the first temperature interval, the voltage value over the second voltage value interval [ Vt_l, vt_h ] is identified as the current ambient temperature being in the second temperature interval, and the voltage value over the third voltage value interval (Vt_h, ++) is identified as the current ambient temperature being in the third temperature interval.

It should be noted that the first resistor R1 and the second resistor R2 are used to provide basic resistance protection.

Furthermore, the present invention also proposes a computer-readable storage medium having stored thereon a computer processing program which, when executed by a processor, implements the steps of the display control method as described above.

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 system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method of the embodiments of the present invention.

The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A display control method, characterized by comprising the steps of:

when a preset temperature interval in which the current ambient temperature is located is detected, calling a voltage difference signal corresponding to the preset temperature interval;

and changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal so as to adjust the pretilt angle of the liquid crystal molecules before entering the display driving stage.

2. The display control method according to claim 1, wherein, before the step of detecting a preset temperature interval in which the current ambient temperature is located, the display control method further comprises:

acquiring a temperature voltage value reflected by the current ambient temperature through a temperature compensation circuit, and determining an ambient temperature value according to the temperature voltage value;

the method comprises the steps of obtaining a magnitude relation between the environment temperature value and a first preset temperature value and/or a second preset temperature value, and determining the preset temperature interval in which the current environment temperature is located based on the magnitude relation, wherein the first preset temperature value is smaller than the second preset temperature value.

3. The display control method according to claim 2, wherein the preset temperature zone includes a first temperature zone, a second temperature zone, and a third temperature zone, and the step of determining the preset temperature zone in which the current ambient temperature is located based on the magnitude relation includes:

if the magnitude relation is that the environmental temperature value is smaller than the first preset temperature value, determining that the current environmental temperature is in the first temperature interval; or alternatively, the first and second heat exchangers may be,

if the magnitude relation is that the environmental temperature value is larger than the first preset temperature value and smaller than the second preset temperature value, determining that the current environmental temperature is in the second temperature interval; or alternatively, the first and second heat exchangers may be,

and if the magnitude relation is that the environmental temperature value is larger than the second preset temperature value, determining that the current environmental temperature is in the third temperature interval.

4. The display control method according to claim 3, wherein the step of calling a voltage difference signal corresponding to the preset temperature interval includes:

invoking a first voltage difference signal corresponding to the first temperature interval;

the step of adjusting the pretilt angle of the liquid crystal molecules before entering the display driving stage by changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal comprises the following steps:

And under the condition that the voltage difference signal is a first voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a first voltage volt value based on the first voltage difference signal, so as to adjust the pretilt angle to a first pretilt angle.

5. The display control method according to claim 3, wherein the step of calling a voltage difference signal corresponding to the preset temperature interval includes:

invoking a second voltage difference signal corresponding to the second temperature interval;

the step of adjusting the pretilt angle of the liquid crystal molecules before entering the display driving stage by changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal comprises the following steps:

and under the condition that the voltage difference signal is a second voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a second voltage volt value based on the second voltage difference signal, so as to adjust the pretilt angle to a second pretilt angle.

6. The display control method according to claim 3, wherein the step of calling a voltage difference signal corresponding to the preset temperature interval includes:

invoking a third voltage difference signal corresponding to the third temperature interval;

The step of adjusting the pretilt angle of the liquid crystal molecules before entering the display driving stage by changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal comprises the following steps:

and under the condition that the voltage difference signal is a third voltage difference signal, adjusting the voltage difference between two ends of the liquid crystal molecules to a third voltage volt value based on the third voltage difference signal, so as to adjust the pretilt angle to a third pretilt angle.

7. The display control method according to claim 1, wherein before the step of calling a voltage difference signal corresponding to a preset temperature interval when the preset temperature interval in which the current ambient temperature is located is detected, the display control method further comprises:

determining the preset temperature interval, and debugging a first end voltage value and a second end voltage value of the liquid crystal molecules in the preset temperature interval until the pretilt angle corresponding to the voltage difference between the first end voltage value and the second end voltage value enables the response time of the liquid crystal molecules in the display driving stage to be in a preset response time interval.

8. A display module, wherein the display module includes a backlight module and a display panel, the backlight module includes a logic control board, the logic control board is applied to the display control method according to any one of claims 1 to 7, and the logic control board includes:

The temperature detection module is connected to the logic control board based on communication connection and is used for detecting a preset temperature interval where the current environment temperature is;

the logic control board is used for calling a voltage difference signal corresponding to a preset temperature interval when detecting the preset temperature interval in which the current ambient temperature is located;

and the gamma chip is connected into the logic control board based on communication connection and is used for changing the voltage difference between two ends of the liquid crystal molecules based on the voltage difference signal so as to adjust the pretilt angle of the liquid crystal molecules before entering the display driving stage.

9. The display module of claim 8, wherein the logic control board further comprises a temperature compensation circuit;

the voltage end of the temperature compensation circuit is connected with the voltage detection end of the temperature detection module and is used for changing the voltage value on the voltage end according to the current environment temperature so that the temperature detection module can acquire the temperature voltage value reflected by the current environment temperature based on the voltage value;

the temperature compensation circuit comprises a temperature sensitive resistor, a first resistor and a second resistor;

the temperature-sensitive resistor is connected with the first resistor in parallel, one end of the second resistor is connected to a connecting line of the temperature-sensitive resistor and the first resistor, and the other end of the second resistor is connected to the voltage end.

10. A computer-readable storage medium, wherein a computer processing program is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the display control method according to any one of claims 1 to 7.