Digital signage with screen moistening function and screen moistening method thereof

Abstract

The invention discloses a digital signage with a screen moistening function and a screen moistening method thereof, the digital signage comprises a display panel and a controller, the display panel is configured to display content, and the controller is configured to perform screen moistening processing on the display panel based on a configured screen moistening trigger condition. The screen moistening processing is to play the set screen moistening display content on the display panel in a rolling manner for a specified duration. Starting and stopping of the screen moistening program are accurately controlled, it is ensured that the screen moistening program is automatically started in the non-high-frequency use time period of a client or when the screen is in a low load state, and therefore normal use of the client is prevented from being disturbed. According to the screen moistening method, pixel refreshing is carried out by displaying well-designed dynamic images, and the images cover different colors, brightness and animation effects. The refreshing strategy of the dynamic image aims at uniformly dispersing the pixel load and effectively reducing the liquid crystal molecule polarization risk caused by long-time display of the static image.

Description

Technical Field

[0001] The present invention relates to the technical field of digital signage display, and in particular to a digital signage with a screen moistening function and a screen moistening method thereof. Background Art

[0002] The anti-burn technology of LCD display products is mainly used to reduce the screen burn-in phenomenon caused by long-term display of static images. The main existing technologies are as follows: 1. Intelligent pixel refresh: Automatically adjust the brightness or color of pixels periodically or according to screen usage to disperse pixel aging and reduce the risk of screen burn-in. 2. Screen saver: Built-in multiple screen saver modes, regularly change the display content, and avoid displaying the same static image for a long time. 3. Brightness and contrast management: Reasonably set the brightness and contrast of the backlight module to avoid excessive brightness that accelerates pixel aging. 4. Automatic sleep function: Set a shorter automatic sleep time to reduce the static image display time when the screen is not in use.

[0003] The smart pixel shift function used in existing technologies has certain limitations when applied to digital signage: (1) When a large area of ​​the content being played is a dynamic image, and only a small area of ​​the screen is a static image, the smart pixel refresh function may not be able to effectively prevent screen burn-in in these local static areas. (2) The pixel shift is difficult to balance: if the shift is too small, it will not effectively prevent screen burn-in, and if the shift is too large, the image quality will be affected. (3) The particularity of customer usage requirements: Customers of digital signage need to use it continuously for a long time (7*18 hours), and are not allowed to enter sleep or screen saver mode during work. When playing content, the brightness needs to remain stable, which increases the difficulty of preventing screen burn-in. Summary of the invention

[0004] The purpose of the present invention is to provide a digital signage with a screen moistening function and a screen moistening method thereof for a liquid crystal public display screen, aiming to solve the liquid crystal molecule polarization phenomenon caused by long-term playback of content containing local small blocks of static images, so as to avoid the liquid crystal molecule polarization phenomenon seriously affecting the screen service life, display effect and user experience.

[0005] The technical solution adopted by the present invention is: A digital signage with a screen moistening function, comprising: a display panel, the display panel being configured to display content; Controller, the controller is configured as: The display panel is subjected to screen moistening processing based on the configured screen moistening triggering condition, and the screen moistening processing is to scroll and play the set screen moistening display content on the display panel for a specified time.

[0006] Furthermore, the screen moistening triggering conditions include one or more of the following: (1) When the LCD screen is turned on, the controller automatically detects the status of the display panel and finds that the display panel has not been lubricated for a long time; (2) Before the LCD screen shuts down, if the controller determines that the display panel needs to be moistened, it will perform the moistening process during the shutdown process before automatically shutting down; (3) When the display panel is in the screen-off state, the screen moistening process is performed at least once; (4) When the set timer start time for the screen moistening process is reached, the controller performs the screen moistening process, wherein the timer start time is set according to the customer's usage habits and the actual usage of the display panel.

[0007] Furthermore, the controller is configured to: time the display duration of the display panel by using a timer.

[0008] Furthermore, the controller is configured to: generate a screen moistening warning when the display time is longer than a first time threshold, and remind the user whether to manually control the screen moistening process, and clear the timer after the display panel is moistened when the user manually turns on the screen moistening process; generate a screen moistening warning when the user does not manually control to turn on the screen moistening process and the display time is longer than a second time threshold, and set the controller to issue a screen moistening warning when the machine enters standby, and the control system performs screen moistening with the backlight turned off. After the screen moistening is completed, the machine enters standby mode; the second time threshold is greater than the first time threshold.

[0009] Furthermore, the controller performs screen moistening processing through a screen moistening program loaded on the digital signage; the screen moistening program provides a user interface, through which the user sets the color, playback speed, and scrolling direction of the screen moistening display content of the screen moistening processing, as well as sets the time interval and duration for the scheduled start of the screen moistening program, to ensure that the display panel operates in the best condition.

[0010] Furthermore, the screen moistening display content is set to use horizontal or vertical bars in seven colors: red, orange, yellow, green, cyan, blue, and purple.

[0011] Furthermore, the scrolling playback mode of the content displayed on the moist screen includes one or more of from left to right, from right to left, from top to bottom and from bottom to top.

[0012] Furthermore, the controller is configured to remind the customer when the run-screen processing is about to start or is in progress; the reminder method includes screen prompt and sound prompt.

[0013] Furthermore, the present invention also discloses a screen moistening method for a digital signage with a screen moistening function, which is applied to the digital signage with a screen moistening function, and the method comprises the following steps: Step 1: After powering on, the controller controls the display panel to display the digital signage content, and at the same time, the display duration is measured by a timer; Step 2, determining whether the display duration is greater than the first time threshold; if so, the controller issues a screen moistening warning before entering standby mode to prompt the user to manually start the screen moistening process, and executes step 3; otherwise, executes step 2; Step 3, determine whether the user manually turns on the screen moistening process; if yes, execute step 4; otherwise, the timer continues to accumulate time and executes step 5; Step 4, after the controller performs screen moistening processing, the timer is reset to re-time the display duration and step 2 is executed; Step 5, determining whether the display duration is greater than a second time threshold; if so, the controller issues a screen moistening warning before entering standby mode to prompt the user to manually start the screen moistening process, and executing step 6; otherwise, executing step 5; Step 6, determining whether the device has the smart screen moistening function turned on; if so, the controller performs at least one screen moistening process; otherwise, the display panel directly enters the screen off state and executes step 7; Step 7, determine whether the timed power-on function is turned on; if so, the control system intelligently sets the screen moistening start time according to the peak and valley of power consumption based on the timed power-on and power-off time, the timer starts timing and executes step 8; otherwise, the control system immediately executes step 4 with the backlight turned off; Step 8: When the set screen moistening start time is reached, the device turns on with the backlight off and executes step 4.

[0014] Furthermore, the controller performs screen moistening processing through a screen moistening program loaded on the digital signage; the screen moistening program provides a user interface, and the user sets the color, playback speed, and scrolling direction of the screen moistening display content of the screen moistening processing through the user interface, as well as sets the time interval and duration of the timed start of the screen moistening program to ensure that the display panel operates in the best state; the screen moistening display content is set to horizontal or vertical bars in seven colors: red, orange, yellow, green, cyan, blue, and purple; the scrolling playback mode of the screen moistening display content includes one or more of from left to right, from right to left, from top to bottom, and from bottom to top.

[0015] The present invention adopts the above technical solution, which can accurately control the start and stop of the screen moistening program according to the customer's usage habits and running time requirements, and perform screen moistening processing on the device without affecting the normal use of the customer, so as to prevent screen afterimages and increase the service life of the product. The present invention has the ability to monitor the screen usage in real time, ensuring that the screen moistening program is automatically started during abnormal display time or abnormal operation of the customer, thereby avoiding interference with the normal use of the customer. The screen moistening method of the present invention performs pixel refresh by displaying carefully designed dynamic images, which cover different colors, brightness and animation effects. The dynamic image refresh strategy of the present invention is intended to evenly disperse the pixel load and effectively reduce the risk of liquid crystal molecule polarization caused by long-term display of static images. The present invention includes a user habit analysis module for collecting and analyzing customer usage data in order to more accurately schedule the operation of the screen moistening program. By analyzing the customer's usage habits, the screen moistening strategy can be further optimized to improve the anti-screen burn effect.

[0016] Compared with the prior art, the present invention has the following features: (1): It will significantly reduce the polarization of liquid crystal molecules caused by long-term playback, especially in areas containing local static images, and improve the polarization phenomenon of liquid crystal molecules. (2): It will extend the overall service life of the liquid crystal public display screen and reduce the cost of replacing the screen in advance due to screen burn-in. (3): Reducing the screen burn-in phenomenon means that the screen will be able to maintain a clear display effect for a longer time, thereby providing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments; Figure 1 A schematic diagram of a flow chart of a screen moistening method for a digital signage with a screen moistening function according to the present invention; Figure 2 It is a schematic diagram of the principle architecture of the screen moistening program of the present invention. Implementation

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0019] like Figure 1 As shown in or 2, the present invention discloses a digital signage with a screen moistening function and a screen moistening method thereof, which comprises: a display panel, the display panel being configured to display content; Controller, the controller is configured as: The display panel is subjected to screen moistening processing based on the configured screen moistening triggering condition, and the screen moistening processing is to scroll and play the set screen moistening display content on the display panel for a specified time.

[0020] Furthermore, the screen moistening triggering conditions include one or more of the following: (1) When the LCD screen is turned on, the controller automatically detects the status of the display panel and finds that the display panel has not been moistened for a long time, and then automatically starts the moistening program; (2) Before the LCD screen shuts down, if the controller determines that the display panel needs to be moistened, it will perform the moistening process during the shutdown process before automatically shutting down; (3) When the display panel is in the screen-off state, the screen moistening process is performed at least once; (4) When the display duration is greater than the second time threshold, the control system intelligently sets the screen lubrication start time based on the customer's scheduled power on and off times and the peak and trough periods of power consumption.

[0021] Furthermore, the controller is configured to: time the display duration of the display panel by using a timer.

[0022] Further, the controller is configured to: generate a screen moistening warning when the display time is greater than a first time threshold, and remind the user whether to manually control the screen moistening process, and clear the timer after performing the screen moistening process on the display panel when the user manually turns on the screen moistening process; generate a screen moistening warning when the user does not manually control to turn on the screen moistening process and the display time is greater than a second time threshold, and set the screen moistening process to be performed with the backlight turned off; the second time threshold is greater than the first time threshold.

[0023] Furthermore, the controller performs screen moistening processing through a screen moistening program loaded on the digital signage; the screen moistening program provides a user interface, through which the user sets the color, playback speed, and scrolling direction of the screen moistening display content of the screen moistening processing, as well as sets the time interval and duration for the scheduled start of the screen moistening program, to ensure that the display panel operates in the best condition.

[0024] Furthermore, the screen moistening display content is set to use horizontal or vertical bars in seven colors: red, orange, yellow, green, cyan, blue, and purple.

[0025] Furthermore, the scrolling playback mode of the content displayed on the moist screen includes one or more of from left to right, from right to left, from top to bottom and from bottom to top.

[0026] Furthermore, the controller is configured to remind the customer when the run-screen processing is about to start or is in progress; the reminder method includes screen prompt and sound prompt.

[0027] Furthermore, the present invention also discloses a screen moistening method for a digital signage with a screen moistening function, which is applied to the digital signage with a screen moistening function, and the method comprises the following steps: Step 1: After powering on, the controller controls the display panel to display the digital signage content, and at the same time, the display duration is measured by a timer; Step 2, determining whether the display duration is greater than the first time threshold; if so, the controller issues a screen moistening warning to prompt the user to manually start the screen moistening process, and executes step 3; otherwise, executes step 2; Step 3, determine whether the user manually turns on the screen moistening process; if yes, execute step 4; otherwise, the timer continues to accumulate time and executes step 5; Step 4, after the controller performs screen moistening processing, the timer is reset to re-time the display duration and step 2 is executed; Step 5, determining whether the display duration is greater than a second time threshold; if so, generating a screen moistening warning message and setting the controller to perform a screen moistening warning when the machine is turned on or off to prompt the user to manually start the screen moistening process, and then executing step 6; otherwise, executing step 5; Step 6, determining whether the device has the smart screen moistening function turned on; if so, the controller performs at least one screen moistening process; otherwise, the display panel directly enters the screen off state and executes step 7; Step 7, determine whether the timed power-on function is turned on; if so, the control system intelligently sets the screen moistening start time according to the peak and valley of power consumption based on the timed power-on and power-off time, the timer starts timing and executes step 8; otherwise, the control system immediately executes step 4 with the backlight turned off; Specifically, DC OFF means entering standby mode, the entire machine enters a low-power state (the control system works normally), and the invalid power supply is turned off to save energy and reduce consumption; DC on means starting up from standby mode, that is, exiting the low-power state and entering a normal working state.

[0028] AC off: The control system has no power and cannot perform any processing. The system can only intelligently determine the start time and duration of the screen moistening function after the AC is turned on next time.

[0029] AC on means power on, AC power is on, the whole system enters normal working state; AC off means power off, there is no AC power, the whole system has no power (the control system cannot work).

[0030] Specifically, "machine on @ backlight off" specifically means that the machine is fake shut down. Fake shutdown means that only the backlight is turned off, that is, the screen is off. The difference between fake shutdown and AC ON or DC ON is that the backlight is turned off. The control system works normally, and the display unit works normally. For the user, the machine looks like it is off, but the screen moisturizing function is actually still running in the background.

[0031] In both cases, when the machine is turned to DC OFF when the smart screen moistening authorization Y or the timed power on switch N is selected, the screen moistening function is implemented when the control unit enters the standby state. (1) Smart screen moistening authorization Y (yes): Execute immediately when DC is off, without turning off the backlight; Timed power on switch N: Smart screen moistening authorization N, and timed power on switch N, the control unit cannot determine the user's usage time. Therefore, in order not to affect the customer's use and the customer's screen management, the backlight can only be turned off and the screen moistening function can be started immediately when the user just turns DC OFF. (2) Timed power on switch Y: The control unit can determine the user's usage time. In order to achieve energy saving and consumption reduction, and at the same time improve the user's economic benefits without affecting the customer's use, the control unit will start the screen moistening function according to the timed power on and off time, during the off-peak period of electricity consumption, while turning off the backlight.

[0032] Step 8: When the set screen moistening start time is reached, the device turns on with the backlight off and executes step 4.

[0033] Furthermore, the controller performs screen moistening processing through a screen moistening program loaded on the digital signage; the screen moistening program provides a user interface, and the user sets the color, playback speed, and scrolling direction of the screen moistening display content of the screen moistening processing through the user interface, as well as sets the time interval and duration of the timed start of the screen moistening program to ensure that the display panel operates in the best state; the screen moistening display content is set to horizontal or vertical bars in seven colors: red, orange, yellow, green, cyan, blue, and purple; the scrolling playback mode of the screen moistening display content includes one or more of from left to right, from right to left, from top to bottom, and from bottom to top.

[0034] The term "digital signage" described in this specification can be used to collectively refer to display advertising boards that deliver information and advertisements by combining various IT technologies such as hardware, software, content, and networks. Such digital signage can be installed in large buildings or places with a large number of mobile populations, such as terminal buildings, public offices, bus stations, department stores, subways, airports, hotels, hospitals, or public places where people stay for a predetermined period of time, such as elevators, theaters, restaurants, shopping malls, or stores.

[0035] As a digital signage, a stand-alone digital signage may use a digital information display (e.g., a plasma display panel (PDP), a liquid crystal display (LCD), a light emitting diode (LED), etc.) to configure a signboard or billboard, store pre-created information and advertising content in a memory, and manually reproduce the information and advertising content. As another digital signage, a networked digital signage may send information and advertising content to a digital information display through a communication network, and perform content transmission and device status management at its center. This digital signage is an example of a display device. In some cases, digital signage and display devices may be used interchangeably.

[0036] As a feasible implementation, the digital signage may include an input unit, a memory, a display panel, and a controller. The input unit may receive image signals R, G, and B and perform digital image signal processing (digital R, G, and B) on the image signals R, G, and B. For example, the image input unit may receive content to be displayed on the screen. The display panel includes a display unit and a display driver, and the display driver may receive an image signal to output a drive signal that drives the display unit to display an image. The display unit may also display a corresponding image according to the drive signal of the display driver. The display unit may include an organic light emitting diode (OLED) panel. In addition, the display unit may be implemented as one of a double-sided sign, a rollable sign, a rotating sign, and a single-sided sign, and the type and driving method may change based on the type of the display unit. The display panel displays content.

[0037] The memory can store data associated with the overall operation of the digital signage, a screen moistening program, etc. The controller can generally control the digital signage. The controller can also control the content output operation of the display panel and the operation of preventing screen afterimages through the screen moistening program.

[0038] The present invention aims to effectively prevent the polarization phenomenon caused by the partial display of static images on the LCD screen for a long time by intelligently scheduling the screen moisturizing program and combining the customer's usage habits. The scheme of the present invention includes the functions of automatic startup, automatic shutdown, background startup of the screen off, and scheduled startup of the screen moisturizing program, and provides default scrolling playback colors and playback modes.

[0039] Automatic start at power-on: When the LCD screen is turned on, the intelligent scheduling system automatically detects the screen status. If the screen has not been moisturized for a long time, the moisturizing program will be automatically started.

[0040] Automatic startup at shutdown: Before the LCD screen shuts down, the intelligent scheduling system determines whether the screen needs to be moistened. If necessary, the moistening program will be automatically started during the shutdown process and the screen will be automatically shut down after completion.

[0041] Automatic start when the screen is off: a screen moisturizing function that automatically runs when the screen is off. It aims to prevent the polarization of liquid crystal molecules by displaying dynamic images, thereby extending the screen life and improving the display effect.

[0042] Scheduled start: According to the customer's usage habits and the actual use of the screen, the intelligent scheduling system sets the function of scheduled start of the screen moisturizing program. Customers can set the time interval and duration of the scheduled start through the user interface to ensure that the screen runs in the best condition.

[0043] Design of the screen runner program: (1) Default colors and playback mode: The screen runner program uses seven colors of red, orange, yellow, green, cyan, blue, and purple for scrolling playback by default. These colors are bright and have high contrast, which helps to effectively activate the liquid crystal molecules and prevent polarization. (2) Playback mode: The screen runner program can be played from left to right or from top to bottom. Customers can choose the appropriate playback mode based on their personal preferences and the actual situation of the screen. (3) Custom settings: In addition to the default settings, the screen runner program also provides a custom setting function. Customers can adjust parameters such as color, playback speed, scrolling direction, etc. as needed to meet different usage requirements.

[0044] The present invention adopts the above technical solution, which can accurately control the start and stop of the screen moistening program according to the customer's usage habits and running time requirements, and perform screen moistening processing on the device without affecting the normal use of the customer, so as to prevent screen afterimages and increase the service life of the product. The present invention has the ability to monitor the screen usage in real time, ensuring that the screen moistening program is automatically started during abnormal display time or abnormal operation of the customer, thereby avoiding interference with the normal use of the customer. The screen moistening method of the present invention performs pixel refresh by displaying carefully designed dynamic images, which cover different colors, brightness and animation effects. The dynamic image refresh strategy of the present invention is intended to evenly disperse the pixel load and effectively reduce the risk of liquid crystal molecule polarization caused by long-term display of static images. The present invention includes a user habit analysis module for collecting and analyzing customer usage data in order to more accurately schedule the operation of the screen moistening program. By analyzing the customer's usage habits, the screen moistening strategy can be further optimized to improve the anti-screen burn effect.

[0045] Compared with the prior art, the present invention has the following features: (1): It will significantly reduce the polarization of liquid crystal molecules caused by long-term playback, especially in areas containing local static images, and improve the polarization phenomenon of liquid crystal molecules. (2): It will extend the overall service life of the liquid crystal public display screen and reduce the cost of replacing the screen in advance due to screen burn-in. (3): Reducing the screen burn-in phenomenon means that the screen will be able to maintain a clear display effect for a longer time, thereby providing a better user experience.

[0046] Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present application is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians of the art without making creative work are within the scope of protection of the present application.

Claims

1. A digital signage with screen moistening function, characterized by: It includes: a display panel, the display panel being configured to display content; Controller, the controller is configured as: The display panel is subjected to screen moistening processing based on the configured screen moistening triggering condition, and the screen moistening processing is to scroll and play the set screen moistening display content on the display panel for a specified time.

2. According to claim 1, a digital signage with screen moistening function and a screen moistening method thereof are characterized in that: The screen run triggering conditions include one or more of the following: (1) When the LCD screen is turned on, the controller automatically detects the status of the display panel and automatically starts the screen moistening program if it finds that the display panel has not been moistened for a long time; (2) Before the LCD screen shuts down, if the controller determines that the display panel needs to be moistened, it will perform the moistening process during the shutdown process before automatically shutting down; (3) When the display panel is in the screen-off state, the screen moistening process is performed at least once; (4) When the set timer start time for the screen moistening process is reached, the controller performs the screen moistening process, wherein the timer start time is set according to the customer's usage habits and the actual usage of the display panel.

3. The digital signage with screen moistening function according to claim 2, characterized in that: The controller is configured to: time the display duration of the display panel through a timer.

4. The digital signage with screen moistening function according to claim 3, characterized in that: The controller is configured to: generate a screen moistening warning when the display duration is longer than a first time threshold, and remind the user whether to manually control the screen moistening process, and reset the timer after the display panel is moistened when the user manually turns on the screen moistening process; generate a screen moistening warning when the user does not manually control the screen moistening process and the display duration is longer than a second time threshold, and set the controller to perform the screen moistening warning before the machine enters the standby state, and perform the screen moistening process when the control system turns off the backlight, and after the screen moistening is completed, the machine enters the standby state; The second time threshold is greater than the first time threshold.

5. The digital signage with screen moistening function according to claim 1, characterized in that: The controller performs screen moistening through a screen moistening program loaded on the digital signage; the screen moistening program provides a user interface, through which the user sets the color, playback speed, scrolling direction of the screen moistening display content, as well as the time interval and duration for the scheduled start of the screen moistening program, to ensure that the display panel operates in the best condition.

6. The digital signage with screen moistening function according to claim 1, characterized in that: The screen display content is set to use horizontal or vertical bars in seven colors: red, orange, yellow, green, cyan, blue, and purple.

7. The digital signage with screen moistening function according to claim 1, characterized in that: The scrolling playback mode of the content displayed on the screen includes one or more of from left to right, from right to left, from top to bottom and from bottom to top.

8. The digital signage with screen moistening function according to claim 1, characterized in that: The controller is configured to remind the customer when the run-screen processing is about to start or is in progress; the reminder method includes screen prompt and sound prompt.

9. A screen moistening method for a digital signage with a screen moistening function, applied to a digital signage with a screen moistening function as claimed in any one of claims 1 to 8, characterized in that: The method comprises the following steps: Step 1: After powering on, the controller controls the display panel to display the digital signage content, and at the same time, the display duration is measured by a timer; Step 2, determining whether the display duration is greater than a first time threshold; if so, the controller issues a screen moistening warning to prompt the user to manually start the screen moistening process, and executing step 3; Otherwise, go to step 2; Step 3, determine whether the user manually turns on the screen moistening process; if yes, execute step 4; otherwise, the timer continues to accumulate time and executes step 5; Step 4, after the controller performs screen moistening processing, the timer is reset to re-time the display duration and step 2 is executed; Step 5, determining whether the display duration is greater than a second time threshold; if so, generating a screen moistening warning message and setting the controller to perform a screen moistening warning when the machine is turned on or off to prompt the user to manually start the screen moistening process, and then executing step 6; Otherwise, go to step 5; Step 6, determining whether the device has the intelligent screen moistening function turned on; if so, the controller performs at least one screen moistening process; Otherwise, go to step 7; Step 7, determine whether the scheduled power-on function is turned on; if so, the control system intelligently sets the screen moistening start time during the power consumption valley period when the customer is not using the device according to the scheduled power-on and power-off time, and the timer starts timing and executes step 8; otherwise, the device reminds the user to start the screen moistening function before entering standby; when the user does not actively enable the screen moistening function, the control system immediately executes step 4 with the backlight turned off; Step 8: When the set screen moistening start time is reached, the device turns on with the backlight off and executes step 4.

10. The screen moistening method of a digital signage with screen moistening function according to claim 9, characterized in that: The controller performs screen moistening through a screen moistening program loaded on the digital signage; the screen moistening program provides a user interface, through which the user sets the color, playback speed, and scrolling direction of the screen moistening display content, as well as the time interval and duration for the scheduled start of the screen moistening program, to ensure that the display panel operates in the best condition; the screen moistening display content is set to horizontal or vertical bars in seven colors: red, orange, yellow, green, cyan, blue, and purple; the scrolling playback mode of the screen moistening display content includes one or more of left to right, right to left, top to bottom, and bottom to top.

Images