Display screen heating circuit and heating method thereof, display panel and display device

Abstract

The application relates to the technical field of electronic device display, and discloses a display screen heating circuit and a heating method thereof, a display panel and a display device. The display screen heating circuit comprises a liquid crystal screen module, a heating film with the same size as the display area of the liquid crystal screen module arranged on the back of the screen of the liquid crystal screen module, a control module electrically connected with the liquid crystal screen module, the control module being used for acquiring the current ambient temperature of the liquid crystal screen module, determining a heating start signal of the heating film according to the current ambient temperature, a backlight driving module electrically connected with the control module and the heating film, the backlight driving module being used for receiving the heating start signal sent by the control module and driving the heating film to heat the liquid crystal screen module according to the heating start signal. The application aims to ensure the economic benefits of the liquid crystal screen and improve the working performance of the liquid crystal screen in a low-temperature environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic device display, in particular to a display screen heating circuit and a heating method thereof, a display panel and a display device. BACKGROUND

[0002] With the continuous development of electronic device display technology, users have higher requirements for the working performance of display screens (such as liquid crystal screens) in low-temperature environments.

[0003] As the main display component of modern electronic devices, the working performance of liquid crystal screens is significantly affected by environmental temperature. In a low-temperature environment, the liquid crystal screen may not work normally due to excessively low temperature, resulting in display abnormalities, color distortion, or even failure to light up, which seriously affects user experience. Traditional solutions such as increasing temperature control systems or increasing backlight power can effectively increase the working temperature of the liquid crystal screen, but often come with high costs and additional energy consumption, which is not conducive to the lightweight, long battery life, and cost control of the device.

[0004] In summary, when ensuring the economic benefits of the liquid crystal screen, how to improve the working performance of the liquid crystal screen in a low-temperature environment is a technical problem to be solved at present.

[0005] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art.

[0006] APPLICATION CONTENT

[0007] The main purpose of the present application is to provide a display screen heating circuit and a heating method thereof, a display panel and a display device, which aims to ensure the economic benefits of the liquid crystal screen and improve the working performance of the liquid crystal screen in a low-temperature environment.

[0008] To achieve the above purpose, the present application provides a display screen heating circuit, which comprises:

[0009] A liquid crystal screen module, the back of the screen of the liquid crystal screen module is provided with a heating film with the same size as the display area of the liquid crystal screen module;

[0010] A control module, the control module is electrically connected with the liquid crystal screen module, and the control module is used to acquire the current environmental temperature of the liquid crystal screen module and determine the heating start signal of the heating film according to the current environmental temperature;

[0011] A backlight driving module, the backlight driving module is electrically connected with the control module and the heating film respectively, and the backlight driving module is used to access the heating start signal sent by the control module and drive the heating film to heat the liquid crystal screen module according to the heating start signal.

[0012] In an embodiment, the control module comprises a temperature detection unit, a display driving unit and a control chip unit;

[0013] The temperature detection unit is arranged between the back of the screen and the heating film, the control chip unit is electrically connected with the temperature detection unit and the display driving unit respectively, and the display driving unit is electrically connected with the liquid crystal screen module;

[0014] The temperature detection unit is configured to acquire the current ambient temperature of the liquid crystal screen module when the display driving unit drives the liquid crystal screen module to display by accessing the display driving signal sent by the control chip unit, and send the current ambient temperature to the control chip unit;

[0015] The control chip unit is configured to receive the current ambient temperature sent by the temperature detection unit, and determine the heating start signal of the heating film according to the current ambient temperature.

[0016] In an embodiment, the backlight driving module comprises a power supply switching unit and a switch control unit;

[0017] The signal input end of the power supply switching unit is electrically connected with the control module, the signal output end of the power supply switching unit is connected with the signal control end of the switch control unit, the first passage end of the switch control unit is electrically connected with the liquid crystal screen module, and the second passage end of the switch control unit is electrically connected with the heating film.

[0018] In an embodiment, the power supply switching unit comprises a P-type MOS tube and an N-type MOS tube;

[0019] The gate end of the P-type MOS tube is electrically connected with the gate end of the N-type MOS tube;

[0020] The gate end of the P-type MOS tube is electrically connected with the connection intersection of the gate end of the N-type MOS tube to form the signal input end of the power supply switching unit, which is electrically connected with the control module;

[0021] The source end of the P-type MOS tube is electrically connected with the positive power supply end, the source end of the N-type MOS tube is electrically connected with the negative power supply end, and the drain end of the P-type MOS tube is electrically connected with the drain end of the N-type MOS tube;

[0022] The drain end of the P-type MOS tube is electrically connected with the connection node of the drain end of the N-type MOS tube to form the signal output end of the power supply switching unit, which is electrically connected with the signal control end of the switch control unit.

[0023] In an embodiment, the liquid crystal screen module comprises a liquid crystal driving circuit, a backlight lamp bead module and a liquid crystal display screen;

[0024] The liquid crystal driving circuit is arranged in a non-display area of the liquid crystal screen module, the liquid crystal display screen is arranged in a display area, and the non-display area is arranged around the edge boundary of the display area;

[0025] The backlight lamp bead module is arranged in an area on the back of the screen and overlapping the display area.

[0026] In addition, to achieve the above-mentioned purpose, the application provides a heating method of a display screen heating circuit, which is applied to the above-mentioned display screen heating circuit, and the heating method of the display screen heating circuit comprises the following steps:

[0027] The control module acquires the current ambient temperature of the liquid crystal screen module, and determines the heating start signal of the heating film according to the current ambient temperature;

[0028] When the backlight driving module inputs the heating start signal sent by the control module, the heating film arranged on the back of the screen of the liquid crystal screen module is driven to heat the liquid crystal screen module according to the heating start signal.

[0029] In an embodiment, the step of determining the heating start signal of the heating film according to the current ambient temperature comprises the following steps:

[0030] It is judged whether the current ambient temperature is lower than the minimum ambient temperature in the normal display of the liquid crystal screen module;

[0031] If the current ambient temperature is greater than or equal to the minimum ambient temperature, the temperature detection unit continuously acquires the current ambient temperature of the liquid crystal screen module until the current ambient temperature is lower than the minimum ambient temperature, and the control module sends the heating start signal of the heating film to the backlight driving module.

[0032] In an embodiment, after the step of driving the heating film arranged on the back of the screen of the liquid crystal screen module to heat the liquid crystal screen module according to the heating start signal, the heating method further comprises the following steps:

[0033] The temperature detection unit continuously acquires the screen heating temperature of the liquid crystal screen module when the heating film is heated until the screen heating temperature rises to the minimum ambient temperature in the normal display of the liquid crystal screen module, and the heating film is enabled to continuously maintain the screen heating temperature to be the same as the minimum ambient temperature.

[0034] When the average working temperature of the liquid crystal driving circuit reaches the minimum ambient temperature, the heating film is enabled to stop heating the liquid crystal screen module under the driving of the heating stop signal of the control module.

[0035] In addition, to achieve the above-mentioned object, the present application provides a display panel, which comprises the display screen heating circuit.

[0036] In addition, to achieve the above-mentioned object, the present application provides a display device, which comprises the display panel; or,

[0037] The display device comprises a processor, a memory, and a display screen heating circuit heating program stored in the memory and executable by the processor, wherein when the display screen heating circuit heating program is executed by the processor, the steps of the display screen heating circuit heating method are implemented.

[0038] In summary, in view of the technical problem that the working performance of the liquid crystal screen is affected by the excessively low temperature in the low-temperature environment, the present application provides a display screen heating circuit and a heating method thereof, a display panel, and a display device, aiming to ensure the economic benefits of the liquid crystal screen and improve the working performance of the liquid crystal screen in the low-temperature environment. Specifically, the display screen heating circuit is provided with a low-cost heating film with the same size as the display area on the back of the liquid crystal screen module, which not only saves the heating cost of the liquid crystal screen in the low-temperature environment, but also realizes the thinning of the liquid crystal screen. In addition, the present application is provided with a control module capable of monitoring the current environmental temperature of the liquid crystal screen module in real time and sending a heating start signal to the backlight driving module according to the current environmental temperature, so that the backlight driving module drives the heating film to heat the liquid crystal screen module in the low-temperature environment according to the heating start signal. Not only does it avoid the high cost and additional energy consumption caused by the traditional temperature control system and high backlight power, but it also effectively solves the problems of display abnormalities, color distortion, and the like caused by low temperature, thereby significantly improving the working performance of the liquid crystal screen in the low-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the display screen heating circuit of the present application;

[0040] Figure 2 It is a schematic diagram of the circuit connection of the display screen heating circuit of the present application;

[0041] Figure 3 It is a schematic diagram of the backlight driving module circuit involved in the display screen heating circuit of the present application;

[0042] Figure 4 It is a flowchart of the heating method embodiment of the display screen heating circuit of the present application;

[0043] Figure 5 It is a schematic diagram of the device structure of the hardware running environment involved in the device of the present application.

[0044] BRIEF DESCRIPTION OF DRAWINGS

[0045] 10, liquid crystal screen module; 20, control module; 30, backlight driving module; 21, temperature detecting unit; 22, display driving unit; 23, control chip unit; 31, power supply switching unit; 32, switch control unit; Q1, P-type MOS tube; Q2, N-type MOS tube.

[0046] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0047] It should be understood that the specific embodiments described herein merely set forth preferred combinations of components and / or other features, and that the scope of the application is not limited to these specific embodiments. Rather, many modifications, variations, and alternatives are possible to one skilled in the art within the scope of the application as defined by the claims.

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by one of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0049] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In addition, the description such as "first", "second", etc. in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that the technical solutions can be realized by one of ordinary skill in the art, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0052] With the continuous development of electronic device display technology, users have higher requirements for the working performance of display screens (such as liquid crystal screens and the like) in low-temperature environments.

[0053] As a main display component of modern electronic devices, the working performance of a liquid crystal screen is significantly affected by the ambient temperature. In a low-temperature environment, the liquid crystal screen may not work normally due to excessively low temperature, resulting in display abnormalities, color distortion, or even failure to light up, which seriously affects the user experience. Traditional solutions such as increasing a temperature control system or increasing backlight power, although can effectively improve the working temperature of the liquid crystal screen, are often accompanied by high costs and additional energy consumption, which is not conducive to the lightness, long battery life, and cost control of the device.

[0054] To sum up, in order to ensure the economic benefits of the liquid crystal screen and improve the working performance of the liquid crystal screen in a low-temperature environment, the present application provides a display screen heating circuit and a heating method thereof, a display panel, and a display device.

[0055] The present application provides a display screen heating circuit. In an embodiment of the present application, referring to Figure 1 Figure 1 FIG. 1 is a schematic diagram of the overall structure of the display screen heating circuit of the present application. The display screen heating circuit comprises a liquid crystal screen module 10, a control module 20, and a backlight driving module 30. The screen back of the liquid crystal screen module 10 is provided with a heating film with the same size as the display area of the liquid crystal screen module 10. The control module 20 is electrically connected with the liquid crystal screen module 10, and is used to acquire the current ambient temperature of the liquid crystal screen module 10 and determine the heating start signal of the heating film according to the current ambient temperature. The backlight driving module 30 is electrically connected with the control module 20 and the heating film, respectively. The backlight driving module 30 is used to access the heating start signal sent by the control module 20, and drive the heating film to heat the liquid crystal screen module 10 according to the heating start signal.

[0056] ​In the embodiment, the application is provided with a heating film covering the back of the screen of the liquid crystal screen module 10, which is the same size as the display area of the liquid crystal screen module 10, so that the heating film can uniformly cover the back of the screen of the liquid crystal screen module 10, thereby ensuring that the entire screen of the liquid crystal screen module 10 can be uniformly heated when the screen needs to be heated, avoiding display performance degradation or damage caused by local temperature being too high or too low. Next, when the display device using the display screen heating circuit is in the powered-on state, according to the electrical connection between the control module 20 and the liquid crystal screen module 10, the control module 20 can obtain the current ambient temperature of the liquid crystal screen module 10 in real time, and intelligently determine whether the heating film needs to be started to heat according to the current ambient temperature. Once it is determined that the screen of the liquid crystal screen module 10 needs to be heated, a heating start signal is immediately output to the backlight driving module 30 to ensure that the liquid crystal screen module 10 can maintain the best working state under various ambient temperatures. Subsequently, according to the electrical connection between the backlight driving module 30 and the control module 20, the backlight driving module 30 can immediately receive the heating start signal sent by the control module 20, and in response to the heating start signal, the constant current voltage source provided by the backlight driving module 30 is switched from the backlight module path to the heating path; Next, according to the electrical connection between the heating path and the heating film, the constant current voltage source provided by the backlight driving module 30 flows into the heating film through the heating path to provide a stable and reliable constant current voltage source for the heating film to power, thereby ensuring that the heating film maintains a constant power output during the heating process. Not only avoids the problem of unstable heating effect caused by voltage fluctuation, but also avoids the high cost and additional energy consumption brought by traditional temperature control system and high backlight power, effectively solves the problems of display abnormalities, color distortion and other problems caused by low temperature, and further significantly improves the working performance of the liquid crystal screen in low temperature environment.

[0057] Further, in some possible embodiments, with reference to Figure 2 , Figure 2 is a circuit connection schematic diagram of the display screen heating circuit of the application. The control module 20 includes a temperature detection unit 21, a display driving unit 22 and a control chip unit 23; the temperature detection unit 21 is arranged between the back of the screen and the heating film, the control chip unit 23 is electrically connected with the temperature detection unit 21 and the display driving unit 22 respectively, and the display driving unit 22 is electrically connected with the liquid crystal screen module 10.

[0058] In the embodiment, the temperature detection unit 21 is arranged between the back of the screen and the heating film, so that the temperature detection unit 21 can accurately obtain the current ambient temperature of the liquid crystal screen module 10 during display.

[0059] The temperature detection unit 21 is configured to acquire the current ambient temperature of the liquid crystal screen module 10 when the display driving unit 22 drives the liquid crystal screen module 10 to display under the action of the display driving signal sent by the control chip unit 23, and send the current ambient temperature to the control chip unit 23.

[0060] In the embodiment, when the display driving unit 22 drives the liquid crystal screen module 10 to display under the action of the display driving signal provided by the control chip unit 23, the temperature detection unit 21 starts to work and monitors and records the temperature change of the liquid crystal screen module 10 in real time according to the electrical connection between the display driving unit 22 and the control chip unit 23, so that the control chip unit 23 electrically connected with the temperature detection unit 21 can acquire the most real and accurate current ambient temperature, thereby providing accurate and reliable data support for the subsequent temperature intelligent control of the control chip unit 23.

[0061] The control chip unit 23 is configured to receive the current ambient temperature sent by the temperature detection unit 21, and determine the heating start signal of the heating film according to the current ambient temperature.

[0062] In the embodiment, after the control chip unit 23 receives the current ambient temperature sent by the temperature detection unit 21, it is detected whether the current ambient temperature is less than the minimum ambient temperature of the liquid crystal screen module 10 during normal display according to the electrical connection between the control chip unit 23 and the temperature detection unit 21, and if it is detected that the current ambient temperature is less than the minimum ambient temperature of the liquid crystal screen module 10 during normal display, the control chip unit 23 is intelligently triggered to immediately send the heating start signal of the heating film to the backlight driving module 30, which not only significantly improves the intelligent level of the control module 20, but also ensures that the liquid crystal screen module 10 can maintain the best working state under various ambient temperatures, effectively avoiding the display performance degradation or damage caused by low temperature problems.

[0063] Further, in other possible embodiments, with reference to Figure 3 , Figure 3 is a circuit schematic diagram of the backlight driving module 30 involved in the display screen heating circuit of the present application. The backlight driving module 30 comprises a power supply switching unit 31 and a switch control unit 32; the signal input end of the power supply switching unit 31 is electrically connected with the control module 20, the signal output end of the power supply switching unit 31 is connected with the signal control end of the switch control unit 32, the first passage end of the switch control unit 32 is electrically connected with the liquid crystal screen module 10, and the second passage end of the switch control unit 32 is electrically connected with the heating film.

[0064] In the embodiment, the backlight driving module 30 realizes the intelligent power management of the liquid crystal screen module 10 and the heating film by integrating the power supply switching unit 31 and the switch control unit 32. Specifically, when the control module 20 sends the heating start signal to the power supply switching unit 31, the power supply switching unit 31 quickly responds and switches the constant current voltage source provided by the backlight driving module 30 from the backlight module path to the heating path. Next, according to the electrical connection of the heating path and the heating film, the constant current voltage source provided by the backlight driving module 30 flows into the heating film through the heating path, so as to provide a stable and reliable constant current voltage source for the heating film to supply power, thereby ensuring that the heating film maintains a constant power output during the heating process. Not only the problem of unstable heating effect caused by voltage fluctuation is avoided, but also the high cost and additional energy consumption caused by the traditional temperature control system and high backlight power are avoided, the problems of display abnormality and color distortion caused by low temperature are effectively solved, and the working performance of the liquid crystal screen in the low temperature environment is significantly improved.

[0065] It should be noted that the switch control unit 32 includes Figure 3 The backlight module path can be understood as a connection link in which the signal output end of the power supply switching unit 31 is electrically connected to the closed low-level on switch S1 to electrically connect the backlight lamp bead module in the liquid crystal screen module 10. The heating path can be understood as a connection link in which the signal output end of the power supply switching unit 31 is electrically connected to the closed high-level on switch S2 to electrically connect the heating film. The heating start signal provided by the application can be understood as a low-level signal.

[0066] Further, in some possible embodiments, referring to Figure 3 The power supply switching unit 31 includes a P-type MOS tube Q1 and an N-type MOS tube Q2; the gate end of the P-type MOS tube Q1 is electrically connected to the gate end of the N-type MOS tube Q2; the gate end of the P-type MOS tube Q1 is electrically connected to the connection intersection of the gate end of the N-type MOS tube Q2 to form the signal input end of the power supply switching unit 31, which is electrically connected to the control module 20; the source end of the P-type MOS tube Q1 is electrically connected to the positive power supply end, the source end of the N-type MOS tube Q2 is electrically connected to the negative power supply end, and the drain end of the P-type MOS tube Q1 is electrically connected to the drain end of the N-type MOS tube Q2; the connection junction of the drain end of the P-type MOS tube Q1 and the drain end of the N-type MOS tube Q2 forms the signal output end of the power supply switching unit 31, which is electrically connected to the signal control end of the switch control unit 32.

[0067] In the embodiment, referring to Figure 3When the control module 20 sends a heating start signal to the power supply switching unit 31, the P-type MOS tube Q1 in the power supply switching unit 31 is switched from the off state to the on state under the drive of the low-level signal, so that the signal output end of the power supply switching unit 31 is pulled up to the positive power supply end electrically connected to the source end of the P-type MOS tube Q1, so that the signal output end of the power supply switching unit 31 outputs a high-level signal; next, Figure 3 The high-level on switch S2 shown is closed under the drive of the high-level signal to connect the signal output end of the power supply switching unit 31 to the heating path of the heating film, so that the constant current voltage source provided by the backlight driving module 30 flows into the heating film via the heating path to provide a stable and reliable constant current voltage source for the heating film to be powered, thereby ensuring that the heating film maintains a constant power output during the heating process, not only avoiding the problem of unstable heating effect caused by voltage fluctuation, but also avoiding the high cost and additional energy consumption brought by the traditional temperature control system and high backlight power, effectively solving the problems of display abnormalities, color distortion and other problems caused by low temperature, and thereby significantly improving the working performance of the liquid crystal screen in a low temperature environment.

[0068] Further, the liquid crystal screen module 10 comprises a liquid crystal driving circuit, a backlight lamp bead module and a liquid crystal display screen; the liquid crystal driving circuit is arranged in the non-display area of the liquid crystal screen module 10, the liquid crystal display screen is arranged in the display area, and the non-display area is arranged around the edge boundary of the display area; the backlight lamp bead module is arranged in the area overlapping the display area on the back of the screen.

[0069] In this example, the liquid crystal screen module 10 is composed of a liquid crystal driving circuit, a backlight lamp bead module and a liquid crystal display screen, which together realize high-quality display function. The liquid crystal driving circuit is ingeniously arranged in the non-display area of the liquid crystal screen module 10, which not only saves space but also ensures the effective layout of the circuit. In addition, the liquid crystal display screen occupies the display area and is responsible for directly presenting images or text. The backlight lamp bead module is located on the back of the screen and overlaps the display area, providing uniform and sufficient backlight for the liquid crystal display screen to ensure the clarity and brightness of the display picture.

[0070] In a specific embodiment, the liquid crystal driving circuit provided by the present application is electrically connected to the display driving unit 22 in the control module 20, and the display driving unit 22 sends the display driving signal provided by the control chip unit 23 to the liquid crystal driving circuit, so that the liquid crystal driving circuit provides a liquid crystal display voltage to the liquid crystal screen module 10 under the action of the display driving signal to realize the display of the liquid crystal screen module 10.

[0071] In another embodiment, the backlight lamp bead module provided by the present application is electrically connected to the display driving unit 22 in the control module 20, and the display driving unit 22 sends the display driving signal provided by the control chip unit 23 to the backlight lamp bead module, so that the backlight lamp bead module provides a constant current voltage source for the liquid crystal display screen under the action of the display driving signal to realize the display of the liquid crystal screen module 10. Figure 3The low-level on / off switch S1 shown is electrically connected. When the control module 20 sends a high-level heating stop signal to the power supply switching unit 31, the N-type MOSFET Q2 in the power supply switching unit 31 switches from the off state to the on state under the drive of the high-level signal, thereby pulling down the signal output terminal of the power supply switching unit 31 to the negative power supply terminal electrically connected to the source terminal of the N-type MOSFET Q2, thus causing the signal output terminal of the power supply switching unit 31 to output a low-level signal; Next... Figure 3 The low-level conducting switch S1 shown is closed under the drive of a low-level signal, connecting the signal output terminal of the power supply switching unit 31 to the backlight module path of the backlight lamp bead module, thereby enabling the constant current voltage source provided by the backlight driving module 30 to power the backlight lamp bead module, so that the backlight lamp bead module turns on the backlight.

[0072] Based on the above embodiments of the display screen heating circuit, a first embodiment of the heating method for the display screen heating circuit of this application is proposed. The heating method for the display screen heating circuit is applied to the above-described display screen heating circuit, with reference to... Figure 4 , Figure 4 This is a schematic flowchart of an embodiment of the heating method for the display screen heating circuit of this application. The heating method for the display screen heating circuit includes steps S10 to S20.

[0073] Step S10: Obtain the current ambient temperature of the LCD module 10 through the control module 20, and determine the heating start signal of the heating film based on the current ambient temperature.

[0074] In this embodiment, a heating film of the same size as the display area of ​​the LCD module 10 is provided to cover the back of the LCD module 10 screen. This ensures that the heating film can evenly cover the back of the LCD module 10 screen, thereby ensuring that the entire LCD module 10 screen can be heated evenly when heating is required, avoiding display performance degradation or damage caused by excessively high or low local temperatures. Next, when the display device using this display heating circuit is powered on, based on the electrical connection between the control module 20 and the LCD module 10, the control module 20 can obtain the current ambient temperature of the LCD module 10 in real time and intelligently determine whether to activate the heating film based on the current ambient temperature. Once it is determined that the LCD module 10 screen needs heating, a heating start signal is immediately output to the backlight driver module 30 to ensure that the LCD module 10 can maintain optimal operating conditions under various ambient temperatures.

[0075] Step S20: When the backlight driving module 30 receives the heating start signal sent by the control module 20, the heating film disposed on the back of the LCD module 10 is driven to heat the LCD module 10 according to the heating start signal.

[0076] In the embodiment, according to the electrical connection between the backlight driving module 30 and the control module 20, the backlight driving module 30 can immediately receive the heating start signal sent by the control module 20, and switch the constant current voltage source provided by the backlight driving module 30 from the backlight module path to the heating path in response to the heating start signal; next, according to the electrical connection between the heating path and the heating film, the constant current voltage source provided by the backlight driving module 30 flows into the heating film through the heating path to provide a stable and reliable constant current voltage source for the heating film to power, thereby ensuring that the heating film maintains a constant power output during the heating process, not only avoiding the problem of unstable heating effect caused by voltage fluctuation, but also avoiding the high cost and additional energy consumption caused by the traditional temperature control system and high backlight power, effectively solving the problems of display abnormalities, color distortion and other problems caused by low temperature, and thereby significantly improving the working performance of the liquid crystal screen in low temperature environment.

[0077] Further, in some possible embodiments, the above step S20: driving the heating film arranged on the back of the liquid crystal screen module 10 to heat the liquid crystal screen module 10 according to the heating start signal, can further include the following implementation steps S201 to S202.

[0078] Step S201: judging whether the current environmental temperature is less than the minimum environmental temperature when the liquid crystal screen module 10 normally displays.

[0079] In the embodiment, by judging whether the current environmental temperature is lower than the minimum environmental temperature when the liquid crystal screen module 10 normally displays, real-time monitoring and comparative analysis of the environmental temperature are realized, thereby providing an important basis for the subsequent operation of driving the heating film to heat.

[0080] Step S202: if the current environmental temperature is greater than or equal to the minimum environmental temperature, the temperature detection unit 21 continuously acquires the current environmental temperature of the liquid crystal screen module 10 until the current environmental temperature is less than the minimum environmental temperature, and triggers the control module 20 to send the heating start signal of the heating film to the backlight driving module 30.

[0081] In the present embodiment, if the result of the determination in step S201 is that the current ambient temperature is greater than or equal to the minimum ambient temperature at which the liquid crystal screen module 10 normally displays, the temperature detection unit 21 continuously acquires the current ambient temperature of the liquid crystal screen module 10, and real-time monitoring of the ambient temperature is maintained. Until the ambient temperature drops below the minimum ambient temperature, the display screen heating circuit provided in the present application triggers the control module 20 to send a heating start signal to the backlight driving module 30 to drive the heating film to start heating, so as to ensure that the heating film can start quickly in a low-temperature environment, and provide timely heating protection for the liquid crystal screen module 10, thereby effectively avoiding the display performance from being degraded or damaged due to the excessively low ambient temperature.

[0082] Further, in another possible embodiment, after the step S20 of driving the heating film provided on the back of the screen of the liquid crystal screen module 10 to heat the liquid crystal screen module 10 according to the heating start signal, the heating method of the display screen heating circuit further includes the following implementation steps A10 to A20.

[0083] Step A10: continuously acquire the screen heating temperature of the liquid crystal screen module 10 when the heating film is heating by the temperature detection unit 21, until the screen heating temperature rises to the minimum ambient temperature at which the liquid crystal screen module 10 normally displays, so that the heating film can continuously maintain the screen heating temperature to be the same as the minimum ambient temperature.

[0084] In the present embodiment, the temperature detection unit 21 continuously monitors the screen heating temperature of the liquid crystal screen module 10 during the heating process of the heating film, so as to ensure that the heating film can accurately heat the screen to the minimum ambient temperature at which the liquid crystal screen module 10 normally displays. When the screen heating temperature reaches the minimum ambient temperature, the display screen heating circuit provided in the present application enables the heating film to continuously maintain the screen heating temperature to be the same as the minimum ambient temperature, which not only ensures that the liquid crystal screen module 10 can work stably in a suitable temperature range, but also avoids energy waste and potential damage caused by excessive heating.

[0085] Step A20: when the average working temperature of the liquid crystal driving circuit reaches the minimum ambient temperature, enable the heating film to stop heating the liquid crystal screen module 10 under the heating stop signal of the control module 20.

[0086] In the embodiment, when the heating film is continuously maintained at the screen heating temperature same as the minimum ambient temperature, the working driving temperature of the liquid crystal driving circuit is obtained according to the preset sampling frequency, and the working temperature mean value of the liquid crystal driving circuit is calculated according to the plurality of working driving temperatures, until the working temperature mean value reaches the minimum ambient temperature when the liquid crystal screen module 10 normally displays, so that the heating film is stopped to heat the liquid crystal screen module 10 under the driving of the heating stop signal of the control module 20, that is, the working performance of the liquid crystal screen in the low-temperature environment is realized by the working temperature mean value of the liquid crystal driving circuit.

[0087] In summary, in the low-temperature environment, the terminal equipment (for example, the display equipment) can maintain the normal display temperature of the liquid crystal screen by relying on the weak heating of the backlight circuit, the driving circuit and other circuits of the liquid crystal screen, but after experiencing low-temperature storage, the temperature of the liquid crystal screen drops suddenly, and it is difficult to quickly restore the display function only by the heating of these circuits, resulting in a long heating process and display abnormalities of the liquid crystal screen during the period, which affects the normal operation of the equipment. The present application only sets a low-cost heating film on the back of the screen of the liquid crystal screen module 10, and uses the original backlight driving module 30 to drive the heating film to heat the liquid crystal screen module 10, which not only avoids the high cost and additional energy consumption caused by the traditional temperature control system and high backlight power, but also effectively solves the display abnormalities, color distortion and other problems caused by low temperature, and further significantly improves the working performance of the liquid crystal screen in the low-temperature environment.

[0088] It should be noted that the above examples are only used for understanding the present application and do not constitute a limitation on the heating method of the display screen heating circuit of the present application. More forms of simple transformation based on this technical concept are within the protection scope of the present application.

[0089] In addition, the present application also provides a display panel, which comprises the display screen heating circuit of any one of the above.

[0090] In addition, the present application also provides a display device. Please refer to Figure 5 , Figure 5 The present application relates to the structure of the display device. The display device of the present application can be a device running the heating program of the display screen heating circuit locally.

[0091] The present application provides a display device, which comprises at least one processor and a memory in communication connection with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the heating method of the display screen heating circuit in the above embodiment I.

[0092] The following will be described with reference to Figure 5The diagram illustrates a structural schematic of a display device suitable for implementing embodiments of this application. The display device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The display device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0093] like Figure 5 As shown, the display device may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the display device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: an input system 1007 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; a storage device 1003 including, for example, magnetic tape, hard disk, etc.; and a communication device 1009. Communication device 1009 allows the display device to communicate wirelessly or wiredly with other devices to exchange data. Although the figures show display devices with various systems, it should be understood that it is not required to implement or possess all of the systems shown. More or fewer systems may be implemented alternatively.

[0094] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program codes for executing the method shown in the flowchart. In such embodiments, the computer program can be downloaded and installed from a network through a communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiments disclosed in the present application are executed.

[0095] The display device provided by the present application adopts the heating method of the display screen heating circuit in the above-mentioned embodiments, which can solve the problem of performance degradation of the liquid crystal screen caused by low temperature in cold environments while ensuring the economic efficiency of the liquid crystal screen. Compared with the prior art, the display device provided by the present application has the same beneficial effects as the heating method of the display screen heating circuit provided by the above-mentioned embodiments, and other technical features in the display device are the same as those disclosed in the previous embodiment method, which will not be repeated here.

[0096] It should be understood that various parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the description of the above-mentioned embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0097] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0098] The present application provides a computer readable storage medium having stored thereon computer readable program instructions (i.e. computer program) for executing the heating method of the display screen heating circuit in the above-mentioned embodiments.

[0099] The computer readable storage medium provided in the application may be, for example, a U disk, but is not limited to an electric, magnetic, optical, electromagnetic, infrared, or semiconductor system, system, or device, or any combination of the above. More specific examples of the computer readable storage medium may include, but are not limited to, an electric connection with one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the embodiment, the computer readable storage medium may be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, system, or device. The program code contained on the computer readable storage medium can be transmitted by any suitable medium, including but not limited to an electric wire, an optical cable, an RF (Radio Frequency), and the like, or any suitable combination of the above.

[0100] The above computer readable storage medium may be contained in a display device, or may exist separately without being assembled into the display device.

[0101] The above computer readable storage medium carries one or more programs, which, when executed by the display device, cause the display device to:

[0102] The control module acquires the current ambient temperature of the liquid crystal screen module, and determines the heating start signal of the heating film according to the current ambient temperature;

[0103] When the backlight driving module inputs the heating start signal sent by the control module, the heating film arranged on the back of the screen of the liquid crystal screen module is driven to heat the liquid crystal screen module according to the heating start signal.

[0104] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0105] The flow diagrams and the block diagrams in the drawings are meant as methodological and functional description of implementations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may

[0106] The modules involved in the embodiments of the present application can be implemented in software or hardware. In some cases, the names of the modules do not limit the modules themselves.

[0107] The readable storage medium provided by the present application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer programs) for executing the heating method of the display screen heating circuit, and can solve the technical problem of low intelligence of computer on-off control. Compared with the prior art, the computer readable storage medium provided by the present application has the same beneficial effects as the heating method of the display screen heating circuit provided by the above-mentioned embodiments, which will not be described here.

[0108] The application further provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the heating method of the display screen heating circuit as described above.

[0109] The computer program product provided by the application can solve the technical problem of low intelligence of computer startup and shutdown control. Compared with the prior art, the beneficial effects of the computer program product provided by the application are the same as those of the display screen heating circuit heating method provided by the above-mentioned embodiments, and are not described here.

[0110] The above-mentioned is only part of the embodiments of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the application, and the contents of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A display screen heating circuit, characterized in that, The display screen heating circuit includes: A liquid crystal display module, wherein a heating film of the same size as the display area of ​​the liquid crystal display module is provided on the back of the screen; A control module is electrically connected to the LCD module. The control module is used to obtain the current ambient temperature of the LCD module and determine the heating start signal of the heating film based on the current ambient temperature. A backlight driving module is electrically connected to the control module and the heating film respectively. The backlight driving module is used to receive the heating start signal sent by the control module and drive the heating film to heat the liquid crystal screen module according to the heating start signal. The backlight driving module includes a power supply switching unit and a switch control unit; The signal input terminal of the power supply switching unit is electrically connected to the control module, the signal output terminal of the power supply switching unit is connected to the signal control terminal of the switch control unit, the first path terminal of the switch control unit is electrically connected to the LCD module, and the second path terminal of the switch control unit is electrically connected to the heating film. The power supply switching unit includes a P-type MOSFET and an N-type MOSFET; The gate terminal of the P-type MOS transistor is electrically connected to the gate terminal of the N-type MOS transistor. The junction of the gate terminal of the P-type MOS transistor and the gate terminal of the N-type MOS transistor forms the signal input terminal of the power supply switching unit, which is electrically connected to the control module. The source terminal of the P-type MOS transistor is electrically connected to the positive power supply terminal, the source terminal of the N-type MOS transistor is electrically connected to the negative power supply terminal, and the drain terminal of the P-type MOS transistor is electrically connected to the drain terminal of the N-type MOS transistor. The connection point where the drain terminal of the P-type MOS transistor is electrically connected to the drain terminal of the N-type MOS transistor constitutes the signal output terminal of the power supply switching unit, which is electrically connected to the signal control terminal of the switch control unit.

2. The display screen heating circuit as described in claim 1, characterized in that, The control module includes a temperature detection unit, a display driver unit, and a control chip unit; The temperature detection unit is disposed between the back of the screen and the heating film. The control chip unit is electrically connected to the temperature detection unit and the display driving unit respectively. The display driving unit is electrically connected to the liquid crystal screen module. The temperature detection unit is used to obtain the current ambient temperature of the LCD module when the display driver unit receives the display driver signal sent by the control chip unit to drive the LCD module to display, and send the current ambient temperature to the control chip unit. The control chip unit is used to receive the current ambient temperature sent by the temperature detection unit, and determine the heating start signal of the heating film based on the current ambient temperature.

3. The display screen heating circuit as described in claim 1, characterized in that, The LCD module includes: an LCD driving circuit, a backlight lamp module, and an LCD display screen; The liquid crystal driving circuit is disposed in the non-display area of ​​the liquid crystal screen module, the liquid crystal display screen is disposed in the display area, and the non-display area is disposed around the edge boundary of the display area; The backlight LED module is located on the back of the screen in an area that overlaps with the display area.

4. A heating method for a display screen heating circuit, characterized in that, The heating method of the display screen heating circuit is applied to the display screen heating circuit of claim 1, and the heating method of the display screen heating circuit includes: The current ambient temperature of the LCD module is obtained through the control module, and the heating start signal of the heating film is determined based on the current ambient temperature. When the backlight driving module receives the heating start signal sent by the control module, the heating film disposed on the back of the LCD module is driven to heat the LCD module according to the heating start signal.

5. The heating method for the display screen heating circuit as described in claim 4, characterized in that, The step of determining the heating start signal of the heating film based on the current ambient temperature includes: Determine whether the current ambient temperature is lower than the minimum ambient temperature at which the LCD module is normally displaying; If the current ambient temperature is greater than or equal to the minimum ambient temperature, the temperature detection unit continuously acquires the current ambient temperature of the LCD module until the current ambient temperature is less than the minimum ambient temperature, at which point the control module is triggered to send a heating start signal for the heating film to the backlight driving module.

6. The heating method for the display screen heating circuit as described in claim 5, characterized in that, After the step of heating the LCD module by driving the heating film disposed on the back of the LCD module screen according to the heating start signal, the heating method further includes: The temperature detection unit continuously acquires the screen heating temperature of the LCD module when the heating film is heated, until the screen heating temperature rises to the lowest ambient temperature when the LCD module is normally displayed, and then the heating film is enabled to continuously maintain the screen heating temperature at the same level as the lowest ambient temperature. When the average operating temperature of the liquid crystal driving circuit reaches the minimum ambient temperature, the heating film is enabled to stop heating the liquid crystal module under the driving signal of the heating stop signal of the control module.

7. A display panel, characterized in that, The display panel includes the display heating circuit according to any one of claims 1 to 3.

8. A display device, characterized in that, The display device includes the display panel as described in claim 7; or... The display device includes a processor, a memory, and a heating program for a display heating circuit stored in the memory and executable by the processor, wherein when the heating program for the display heating circuit is executed by the processor, it implements the steps of the heating method for the display heating circuit as described in any one of claims 4 to 6.

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