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CN110111732B - Brightness adjusting method of spliced screen, display sub-screen of spliced screen and spliced screen - Google Patents

Brightness adjusting method of spliced screen, display sub-screen of spliced screen and spliced screen Download PDF

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Publication number
CN110111732B
CN110111732B CN201910396001.5A CN201910396001A CN110111732B CN 110111732 B CN110111732 B CN 110111732B CN 201910396001 A CN201910396001 A CN 201910396001A CN 110111732 B CN110111732 B CN 110111732B
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brightness
screen
display sub
information
sub
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CN110111732A (en
Inventor
杨旭
单奇
丁立薇
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Yungu Guan Technology Co Ltd
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Yungu Guan Technology Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The application provides a brightness adjusting method of a spliced screen, a display sub-screen of the spliced screen and the spliced screen, and relates to the technical field of display. The brightness adjusting method of the spliced screen comprises the steps of controlling a display sub-screen to be lightened according to preset brightness information; collecting the brightness of the lighted display sub-screen to obtain collected brightness information; judging whether the acquired brightness information is within a preset range; and if the collected brightness information is not in the preset range, executing a reminding operation, wherein the reminding operation is used for reminding a user to replace the display sub-screens, so that the display brightness of the display sub-screens can be equivalent to the preset brightness, the brightness of the display sub-screens can be uniform, and the problem of brightness difference among the display sub-screens of the spliced screen is effectively solved.

Description

Brightness adjusting method of spliced screen, display sub-screen of spliced screen and spliced screen
Technical Field
The application relates to the technical field of display, in particular to a brightness adjusting method of a spliced screen, a display sub-screen of the spliced screen and the spliced screen.
Background
The spliced screen is formed by combining a plurality of display sub-screens into a whole according to a certain number and layout so as to meet the requirement of large-size display. However, in the use process of the spliced screen, the problem of brightness difference between different display sub-screens can be obviously found.
Therefore, how to improve the brightness difference between the display sub-screens of the tiled screen becomes an urgent problem to be solved.
Disclosure of Invention
In view of this, embodiments of the present application aim to provide a brightness adjustment method for a tiled screen, a display sub-screen of the tiled screen, and the tiled screen, so as to solve the problem in the prior art that brightness differences exist between the display sub-screens of the tiled screen.
The application provides a brightness adjusting method of a spliced screen on one hand, which comprises the steps of controlling a display sub-screen to be lightened according to preset brightness information; collecting the brightness of the lighted display sub-screen to obtain collected brightness information; judging whether the acquired brightness information is within a preset range; and if the acquired brightness information is not in the preset range, executing a reminding operation, wherein the reminding operation is used for reminding a user to replace the display sub-screen.
In an embodiment of the application, before the controlling the display sub-screen to light up according to the preset brightness information, the brightness adjusting method further includes determining the preset brightness information.
In an embodiment of the application, the controlling the display sub-screen to be turned on according to the preset brightness information includes receiving the preset brightness information; determining the AVEE voltage of the AVEE port of the brightness adjusting circuit according to the preset brightness information; and sending a power supply instruction to a power supply module based on the AVEE voltage, wherein the power supply module supplies power to the brightness adjusting circuit.
In an embodiment of the application, the acquiring the brightness of the lighted display sub-screen to obtain the acquired brightness information includes sending a brightness acquisition instruction to a brightness acquisition module; receiving the collected brightness information returned by the brightness collection module; and sending the collected brightness information and the identification information of the display sub-screen.
In an embodiment of the application, the performing of the reminding operation includes performing a reminding operation according to the identification information.
The application also provides a display sub-screen of the spliced screen, which comprises a sub-control module, a power supply module electrically connected with the sub-control module and a brightness adjusting circuit comprising an AVEE port; the power supply module supplies power to the brightness adjusting circuit, and the sub-control module is configured to receive preset brightness information; determining the AVEE voltage of the AVEE port according to the preset brightness information; and sending a power supply instruction to the power supply module based on the AVEE voltage.
In one embodiment of the present application, the display sub-screen further includes a driving module, and the driving module includes the brightness adjusting circuit.
In one embodiment of the present application, the power supply instruction includes the AVEE voltage, and the power supply module supplies power to the AVEE port of the brightness adjusting circuit according to the AVEE voltage.
In an embodiment of the present application, the display sub-screen further includes a brightness acquisition module electrically connected to the sub-control module, the brightness acquisition module is configured to acquire display brightness of the display sub-screen, and the sub-control module is further configured to send a brightness acquisition instruction to the brightness acquisition module after controlling the display sub-screen to be lighted; receiving collected brightness information returned by the brightness collection module; and sending the collected brightness information and the identification information of the display sub-screen.
In another aspect, the present application provides a tiled screen, including a main controller; and a plurality of display sub-screens according to any one of the second aspect, the display sub-screens being electrically connected to the main controller; the main controller is configured to receive collected brightness information and identification information sent by the display sub-screen; judging whether the acquired brightness information is within a preset range; and if the acquired brightness information is not in the preset range, executing a reminding operation according to the identification information, wherein the reminding operation is used for reminding a user to replace the display sub-screen corresponding to the identification information.
In an embodiment of the application, the main controller is further configured to perform a display operation if the collected luminance information is within the preset range.
In an embodiment of the application, the main controller is further configured to send preset brightness information to the plurality of display sub-screens before receiving the collected brightness information and the identification information sent by the display sub-screens.
In an embodiment of the application, after the tiled screen is turned on, the main controller executes the sending of the preset brightness information to the plurality of display sub-screens.
The embodiment of the application is through showing the sub-screen and brightening according to predetermineeing luminance information control, gather and light the back the luminance that shows the sub-screen obtains gathering luminance information, judges whether gather luminance information and predetermineeing the within range, and if gather luminance information and be in predetermineeing the within range, carry out and remind the operation, wherein, remind the operation and be used for reminding the user to change show the sub-screen to make the demonstration luminance that shows the sub-screen can match with predetermineeing luminance, and then make a plurality of demonstration sub-screens can the luminance homogeneity, effectively improved the problem of luminance difference between the demonstration sub-screen of concatenation screen.
Drawings
Fig. 1 is a schematic flow chart of a brightness adjustment method of a tiled screen according to an embodiment of the present application.
Fig. 2 is a schematic flow chart of a brightness adjustment process of a tiled screen according to one embodiment of the present application.
FIG. 3 is a schematic block diagram of a display sub-screen of a tiled screen according to one embodiment of the present application.
FIG. 4 is a schematic block diagram of a display sub-screen of a tiled screen according to another embodiment of the present application.
FIG. 5 is a schematic block diagram of a tiled screen according to one embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
As described in the background, tiled screens are increasingly being used in many applications because they can meet the requirements of large-size displays. For example, it may be used for exhibition display, military command, traffic control, etc. Currently, a commonly used display sub-screen in the tiled display screen includes an Organic Light-Emitting Diode (OLED) display sub-screen. However, due to the process difference of the OLED display sub-panel itself or the aging of the light emitting device, the luminance difference between different display sub-panels may occur. This problem is not much affected on a single screen terminal, but when applied in a tiled screen, a significant brightness difference is observed, thereby affecting the display quality.
Fig. 1 is a schematic flow chart of a brightness adjustment method of a tiled screen according to an embodiment of the present application.
Based on this, the embodiment of the application provides a brightness adjusting method of a spliced screen. As shown in fig. 1, the brightness adjusting method of the tiled screen may include the following steps. The execution subject of the method may be the mosaic screen.
And step 110, controlling the display sub-screen to light up according to preset brightness information.
Specifically, in an embodiment of the present application, before step 110, the brightness adjustment method may further include determining the preset brightness information, so as to control the display sub-screen to be turned on according to the determined preset brightness information. Here, the preset brightness information may be pre-stored, or may be set by the user after receiving the prompt message. The embodiment of the present application does not specifically limit the determination manner of the preset luminance information.
In one embodiment of the present application, the display sub-screen may include a brightness adjusting circuit and a power supply module, and the brightness adjusting circuit and the power supply module are electrically connected. The execution subject of step 110 may be a display sub-screen, and step 110 may include receiving preset brightness information; determining the AVEE voltage of the AVEE port of the brightness adjusting circuit according to the preset brightness information; and sending a power supply instruction to a power supply module based on the AVEE voltage, wherein the power supply module supplies power to the brightness adjusting circuit.
Here, the display sub-screen may exhibit different display brightness at different AVEE voltages. Specifically, one AVEE voltage may correspond to one display luminance.
And step 120, acquiring the brightness of the lighted display sub-screen to obtain acquired brightness information.
In particular, the acquisition process may be performed by a brightness sensor. When the display sub-screen is good, the display brightness after the display sub-screen is turned on should be substantially the same as the display brightness corresponding to the preset brightness information.
In one embodiment of the present application, the display sub-screen may further include a brightness acquisition module. The execution main body of step 120 may also be the display sub-screen, and step 120 may include sending a brightness acquisition instruction to a brightness acquisition module; receiving collected brightness information returned by the brightness collection module; and sending the collected brightness information and the identification information of the display sub-screen.
Step 130, judging whether the collected brightness information is in a preset range.
Specifically, the preset luminance information may be within the preset range. The preset range may be pre-stored, or may be generated according to preset luminance information. The embodiment of the present application does not specifically limit the setting manner of the preset range. This step 130 may be used to determine whether the display sub-screen is good.
And 140, if the collected brightness information is not in the preset range, executing a reminding operation, wherein the reminding operation is used for reminding a user to replace the display sub-screen.
Specifically, if the determination result in step 130 is negative, it indicates that the display sub-screen is in a non-good state and needs to be replaced. If the determination result in step 130 is yes, it indicates that the display sub-screen is in a good state and can be used for normal display. In other words, when the determination result of step 130 is yes, a display operation may be performed to display information to be displayed.
In one embodiment of the present application, the performing the reminder operation may include performing the reminder operation according to the identification information. Here, the reminding operation is to remind the user to replace the display sub-screen corresponding to the identification information.
The embodiment of the application is through showing the sub-screen and brightening according to predetermineeing luminance information control, gather and light the back the luminance that shows the sub-screen obtains gathering luminance information, judges whether gather luminance information and predetermineeing the within range, and if gather luminance information and be in predetermineeing the within range, carry out and remind the operation, wherein, remind the operation and be used for reminding the user to change show the sub-screen to make the demonstration luminance that shows the sub-screen can match with predetermineeing luminance, and then make a plurality of demonstration sub-screens can the luminance homogeneity, effectively improved the problem of luminance difference between the demonstration sub-screen of concatenation screen.
Embodiments of the present invention are described in more detail below with reference to specific examples.
Fig. 2 is a schematic flow chart of a brightness adjustment process of a tiled screen according to one embodiment of the present application. The embodiment of fig. 2 may be an example of the embodiment of fig. 1.
And step 210, after the spliced screen is started, the main controller sends preset brightness information to the plurality of display sub-screens.
Specifically, the spliced screen can be composed of a main controller and a plurality of display sub-screens. The plurality of display sub-screens can be electrically connected with the main controller respectively. Each display sub-screen can comprise a sub-control module, a driving module, a brightness acquisition module and a power supply module. The brightness acquisition module and the power supply module can be respectively and electrically connected with the sub-control module, and the power supply module can be electrically connected with the driving module. The driving module can drive the display sub-screen to display, and can comprise a brightness adjusting circuit, and the brightness adjusting circuit can control the display brightness of the display sub-screen.
In step 212, the sub-control module of the display sub-screen determines the AVEE voltage of the AVEE port of the brightness adjusting circuit of the driving module of the display sub-screen according to the preset brightness information.
Specifically, the sub-control module may be pre-stored with a correspondence between luminance information and an AVEE voltage, and one luminance information corresponds to one AVEE voltage. For example, the correspondence may be a relational expression or a two-dimensional table of luminance information and AVEE voltage. The embodiment of the present application does not specifically limit the correspondence relationship. The sub-control module may determine an AVEE voltage corresponding to the preset luminance information according to the received preset luminance information. The brightness adjusting circuit can control the brightness of the display sub-screen by controlling the voltage of the AVEE port.
In step 214, the sub-control module sends a power supply instruction to the power supply module of the display sub-screen based on the AVEE voltage.
Specifically, the power supply instruction includes an AVEE voltage corresponding to the preset luminance information.
In step 216, the power supply module supplies power to the AVEE port of the brightness adjusting circuit according to the AVEE voltage.
When power is supplied, the voltage of the AVEE port is the AVEE voltage. After power is supplied, the display sub-screen is lighted. When the display sub-screen is good, the display brightness after the display sub-screen is turned on should be substantially the same as the display brightness corresponding to the preset brightness information.
In step 218, the sub-control module sends a brightness acquisition command to the brightness acquisition module of the display sub-screen.
And after the display sub-screen is lightened, the sub-control module sends the brightness acquisition instruction.
And step 220, the brightness acquisition module acquires the display brightness of the display sub-screen according to the brightness acquisition instruction to obtain the acquired brightness information.
Specifically, the brightness acquisition module may include a brightness sensor, and the brightness acquisition module may acquire the acquired brightness information through the brightness sensor.
In step 222, the brightness collection module returns the collected brightness information to the sub-control module.
In step 224, the sub-control module returns the collected brightness information and the identification information of the display sub-screen to the main controller.
Specifically, the sub-control module returns collected brightness information and an identification code of the display sub-screen to the main controller. Or the sub-control module returns collected brightness information of the display sub-screen to the main controller, wherein the collected brightness information comprises identification information of the display sub-screen. Specifically, the identification information may be an ID number of the display sub-screen.
In step 226, the main controller determines whether the collected brightness information is within a predetermined range.
When the determination result is yes, step 230 is performed. When the determination result is negative, step 228 is performed.
And step 228, the main controller executes a reminding operation, wherein the reminding operation is used for reminding a user to replace the display sub-screen corresponding to the identification information.
Specifically, the reminding operation can be that the spliced screen broadcasts the ID number of the display sub-screen to be replaced, and the display sub-screen to be replaced can flash and send an alarm. The embodiment of the present application does not limit the specific content of the reminding operation.
In step 230, the main controller performs a display operation.
Specifically, the display operation may be to make the display sub-screen present information to be displayed.
It should be understood that steps 212 through 230 correspond to a display sub-screen. Since the tiled display has multiple display sub-displays, steps 212 through 230 are repeated until all display sub-displays have been executed.
The brightness adjustment method of the tiled screen according to the embodiment of the present application is described above, and the display sub-screen of the tiled screen according to the embodiment of the present application is described below with reference to fig. 3.
FIG. 3 is a schematic block diagram of a display sub-screen of a tiled screen according to one embodiment of the present application.
As shown in fig. 3, the display sub-screen of the tiled display screen may include a sub-control module 310, a power supply module 320 electrically connected to the sub-control module 310, and a brightness adjustment circuit 330 including an AVEE port. Here, the power supply module 320 supplies power to the brightness adjusting circuit 330, and the sub-control module 310 is configured to receive preset brightness information; determining the AVEE voltage of the AVEE port according to the preset brightness information; and sends a power command to the power module 320 based on the AVEE voltage.
FIG. 4 is a schematic block diagram of a display sub-screen of a tiled screen according to another embodiment of the present application.
In one embodiment of the present application, as shown in fig. 4, the display sub-screen may further include a driving module 340, and the driving module 340 may include the brightness adjusting circuit 330.
In one embodiment of the present application, the power supply instruction includes an AVEE voltage, and the power supply module 320 supplies power to the AVEE port of the brightness adjusting circuit 330 according to the AVEE voltage.
In an embodiment of the present application, the display sub-screen may further include a brightness acquisition module 350 electrically connected to the sub-control module 310, where the brightness acquisition module 350 is configured to acquire display brightness of the display sub-screen, and the sub-control module 310 is further configured to send a brightness acquisition instruction to the brightness acquisition module 350 after controlling the display sub-screen to light up; receiving collected brightness information returned by the brightness collection module 350; and sending the collected brightness information and the identification information of the display sub-screen.
The embodiment of the application is through showing the sub-screen and brightening according to predetermineeing luminance information control, gather and light the back the luminance that shows the sub-screen obtains gathering luminance information, judges whether gather luminance information and predetermineeing the within range, and if gather luminance information and be in predetermineeing the within range, carry out and remind the operation, wherein, remind the operation and be used for reminding the user to change show the sub-screen to make the demonstration luminance that shows the sub-screen can match with predetermineeing luminance, and then make a plurality of demonstration sub-screens can the luminance homogeneity, effectively improved the problem of luminance difference between the demonstration sub-screen of concatenation screen.
The operation and function of the sub-control module 310, the power supply module 320, the driving module 340, the brightness adjusting circuit 330, and the brightness acquiring module 350 of the sub-screen may refer to the brightness adjusting method of the tiled screen, and are not described herein again to avoid repetition.
A tiled screen according to an embodiment of the present application is described below in conjunction with fig. 5.
FIG. 5 is a schematic block diagram of a tiled screen according to one embodiment of the present application.
As shown in fig. 5, the tiled display can include a main controller 510, and a plurality of display sub-displays 520 as described in any of the above, the display sub-displays 520 being electrically connected to the main controller 510. Here, the main controller 510 is configured to receive the collected luminance information and the identification information transmitted from the display sub-screen 520; judging whether the acquired brightness information is within a preset range; and if the collected brightness information is not in the preset range, executing a reminding operation according to the identification information, wherein the reminding operation is used for reminding a user to replace the display sub-screen 520 corresponding to the identification information.
In an embodiment of the present application, the main controller 510 may be further configured to perform a display operation if the collected brightness information is within a preset range.
In one embodiment of the present application, the main controller 510 may be further configured to send preset brightness information to the plurality of display sub-screens 520 before receiving the collected brightness information and the identification information sent by the display sub-screens 520.
In one embodiment of the present application, the main controller 510 may execute sending the preset brightness information to the plurality of display sub-screens 520 after the tiled display is powered on.
The embodiment of the application acquires brightness information of the display sub-screen 520 after the brightness of the display sub-screen 520 is controlled according to the preset brightness information, judges whether the acquired brightness information is in the preset range, and if the acquired brightness information is not in the preset range, executes reminding operation, wherein the reminding operation is used for reminding a user to replace the display sub-screen 520, so that the display brightness of the display sub-screen 520 can be equivalent to the preset brightness, and further the display sub-screens 520 can be uniform in brightness, and the problem of brightness difference between the display sub-screens 520 of the spliced screen is effectively solved.
The operation and function of the main controller 510 and the plurality of display sub-screens 520 of the tiled screen may also refer to the above-mentioned brightness adjustment method of the tiled screen, and are not described herein again to avoid repetition.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modifications, equivalents and the like that are within the spirit and principle of the present application should be included in the scope of the present application.

Claims (7)

1. A brightness adjusting method of a spliced screen is characterized by comprising the following steps:
controlling the display sub-screen to light up according to preset brightness information;
collecting the brightness of the lighted display sub-screen to obtain collected brightness information;
judging whether the acquired brightness information is in a preset range or not, wherein the preset range is generated according to the preset brightness information; and
if the acquired brightness information is not in the preset range, executing a reminding operation, wherein the reminding operation is used for reminding a user to replace the display sub-screen;
wherein, the control of the display sub-screen to be lighted according to the preset brightness information comprises:
receiving the preset brightness information;
determining the AVEE voltage of the AVEE port of the brightness adjusting circuit according to the preset brightness information; and
and sending a power supply instruction to a power supply module based on the AVEE voltage, wherein the power supply module supplies power to the brightness adjusting circuit.
2. The brightness adjustment method according to claim 1, wherein the acquiring the brightness of the lighted display sub-screen to obtain the acquired brightness information comprises:
sending a brightness acquisition instruction to a brightness acquisition module;
receiving the collected brightness information returned by the brightness collection module; and
and sending the collected brightness information and the identification information of the display sub-screen.
3. The brightness adjustment method according to claim 2, wherein the performing of the alert operation includes:
and executing reminding operation according to the identification information.
4. A display sub-screen of a spliced screen is characterized by comprising a sub-control module, a power supply module electrically connected with the sub-control module and a brightness adjusting circuit comprising an AVEE port;
wherein the power supply module supplies power to the brightness adjusting circuit, and the sub-control module is configured to:
receiving preset brightness information;
determining the AVEE voltage of the AVEE port according to the preset brightness information; and
sending a power supply instruction to the power supply module based on the AVEE voltage;
the power supply instruction comprises the AVEE voltage, and the power supply module supplies power to the AVEE port of the brightness adjusting circuit according to the AVEE voltage.
5. The display sub-screen of claim 4, further comprising a brightness acquisition module electrically connected to the sub-control module, the brightness acquisition module configured to acquire the display brightness of the display sub-screen, the sub-control module further configured to:
after the display sub-screen is controlled to be lightened, a brightness acquisition instruction is sent to the brightness acquisition module;
receiving collected brightness information returned by the brightness collection module; and
and sending the collected brightness information and the identification information of the display sub-screen.
6. A tiled screen, comprising:
a main controller; and
a plurality of display sub-screens according to any one of claims 4 to 5, the display sub-screens being electrically connected to the main controller;
wherein the master controller is configured to:
receiving collected brightness information and identification information sent by the display sub-screen;
judging whether the acquired brightness information is in a preset range or not, wherein the preset range is generated according to the preset brightness information; and
if the acquired brightness information is not in the preset range, executing a reminding operation according to the identification information, wherein the reminding operation is used for reminding a user to replace the display sub-screen corresponding to the identification information;
the master controller is further configured to:
and sending preset brightness information to the plurality of display sub-screens before receiving the collected brightness information and the identification information sent by the display sub-screens.
7. The tiled screen of claim 6, wherein the master controller is further configured to:
and if the acquired brightness information is within the preset range, executing display operation.
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