CN112996169A - LED module with resume information, screen display and correction system - Google Patents
LED module with resume information, screen display and correction system Download PDFInfo
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- CN112996169A CN112996169A CN201911197732.3A CN201911197732A CN112996169A CN 112996169 A CN112996169 A CN 112996169A CN 201911197732 A CN201911197732 A CN 201911197732A CN 112996169 A CN112996169 A CN 112996169A
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Abstract
The invention provides an LED module with resume information, a screen display and a correction system, wherein the LED module comprises: an interface circuit for transmitting a display data and a control signal between the LED screen display systems; a uniform standard conversion circuit coupled to the interface circuit for operating the display data and a calibration parameter pre-stored in the uniform standard conversion circuit to generate and output a gray data; a display memory for storing the gray data and outputting the gray data; a constant current driving circuit coupled to the display memory for outputting a constant current according to the gray data; and the LED lamp bead generates a light source according to the constant current so as to display an image.
Description
Technical Field
The invention relates to a light emitting diode (hereinafter referred to as LED) module with history information, a screen display and a correction system, in particular to a LED screen display system and a LED screen display and correction system, which are provided with a nonvolatile memory and pre-store correction parameters of the LED module, history information (such as module numbers, screen display system numbers, LED lamp bead production information, used time and the like) of the LED module.
Background
In the traditional LED module, due to the factors of uneven light emitting of the LED chip, uneven driving circuit capacity, uneven packaging optical characteristics and the like, the display of each luminous point of the LED module is uneven, so that the display problem is more complicated after the traditional LED module forms a large-scale screen display. The production data of the LED module is not systematically integrated and linked, such as the production data of the LED chip, the production data of the LED package test, the production data of the driver IC, the production data of the LED circuit board, and so on. The problem with resulting after-market repairs is also time consuming, labor intensive, and money consuming. With the popularization of small-spacing LED display screens and Micro LED display screens, the number of required LEDs is more and more, and when an LED module breaks down and needs to be maintained, the problem is more difficult.
The invention can overcome the problems, so that each LED module can keep consistent absolute light brightness or light color, record history data of the LED module in a nonvolatile memory in a wired or wireless mode by using the latest technology, record inquiry and analysis are carried out by using the Internet of things and Artificial Intelligence (AI) big data technology, and after-sale history authentication of the LED module can be carried out, thereby realizing health tracking maintenance management.
Disclosure of Invention
One of the objectives of the present invention is to provide each LED module with uniform absolute brightness or color.
One of the purposes of the invention is to enable each LED module to perform record query and analysis through the Internet of things and AI data, so as to predict the LED module which is about to fail.
One of the objectives of the present invention is to allow each LED module to be analyzed with AI data to predict new calibration parameters.
The present invention is an LED module, comprising: an interface circuit for transmitting a display data and a control signal between the LED module and the LED screen display system; a uniform standard conversion circuit coupled to the interface circuit for operating the display data and a calibration parameter pre-stored in the uniform standard conversion circuit to generate and output a gray data; a display memory for storing the gray data and outputting the gray data; a constant current driving circuit coupled to the display memory for outputting a constant current according to the gray data; and the LED lamp bead generates a light source according to the constant current so as to display an image.
The invention is a LED screen display system, comprising: an array of LED modules, the array of LED modules comprising a plurality of LED modules, each LED module comprising: the interface circuit transmits display data and control signals between the LED module and the LED screen display system; a uniform standard conversion circuit coupled to the interface circuit for operating the display data and a calibration parameter pre-stored in the uniform standard conversion circuit to generate and output a gray data; a display memory for storing the gray data and outputting the gray data; a constant current driving circuit coupled to the display memory for outputting a constant current according to the gray data; the LED lamp bead generates a light source according to the constant current to display an image; and an LED screen display controller for controlling the LED module array according to the display data and the control signal; the LED screen display controller controls each LED module to store history information (such as serial numbers, production parameters, operating states and the like) of an LED screen display system.
The invention relates to an LED screen display and correction system, comprising: an LED on-screen display system having an LED module for generating an image; a correction control module for storing a first correction parameter to be re-corrected and a history information of the LED module into a non-volatile memory in the LED module; and the Internet of things control module uploads the first correction parameter and the history information of the LED module to an Internet of things cloud system.
Drawings
FIG. 1 shows a schematic diagram of an LED module of the present invention;
FIG. 2 is a schematic diagram of an LED module of the present invention applied to an LED on-screen display system;
FIG. 3 is a schematic diagram of an LED module of the present invention applied to an LED screen display and calibration system.
Description of the symbols
10 LED module
11 interface circuit
12 uniform standard conversion circuit
13 display memory
14 constant current driving circuit
15 bulb
20 LED screen display system
21 LED module array
22 LED screen display controller
30 LED screen display and correction system
31 LED correction system
C Internet of things cloud system
Detailed Description
Referring to fig. 1, fig. 1 shows a schematic diagram of an LED module according to the present invention. The LED module 10 includes: interface circuit 11, even standard converting circuit 12, display memory 13, constant current drive circuit 14, LED lamp pearl 15.
The interface circuit 11 transmits a display data and a control signal between the LED module 10 and an LED screen display system (not shown); the uniform standard conversion circuit 12 is coupled to the interface circuit 11, receives the display data, and performs an operation on the display data and a calibration parameter pre-stored in the uniform standard conversion circuit 12 to generate gray data, and outputs the gray data to the display memory 13; the display memory 13 stores the gradation data and outputs the gradation data to the constant current driving circuit 14; the constant current driving circuit 14 is coupled to the display memory 13 and the LED lamp bead 15, and outputs a constant current according to the gray data, so that the LED lamp bead 15 generates a light source according to the constant current, and the LED module 10 displays an image.
Please note that, the uniform standard conversion circuit 12 further includes a nonvolatile memory 12a, the nonvolatile memory 12a is used to pre-store the calibration parameters corresponding to the LED module 10 or the history information of the LED module, and in one implementation, the history information may be implemented by the module number, the on-screen system number, the LED lamp bead production information, the used time, and other data.
In the present embodiment, the uniform standard conversion circuit 12 receives the display data and performs an operation on the display data and a calibration parameter pre-stored in the uniform standard conversion circuit 12 to generate gray data, and outputs the gray data to the display memory 13. The constant current output by the constant current driving circuit 14 can be controlled according to the X axis or the Y axis of the LED lamp bead 15; the constant current driving circuit 14 can be implemented by a Pulse Width Modulation (PWM) circuit. Since the non-volatile memory 12a of the present invention stores the calibration parameters of the LED module 10 when it leaves the factory, the calibration parameters generated by the automatic calibration method of absolute brightness or light color are substantially point-to-point calibrated, so that the displayed image of the LED lamp bead can maintain consistent absolute brightness or light color. In another embodiment, each group of LED light beads 15 includes a red light bead (R), a green light bead (G), and a blue light bead (B).
Please note that, the gray data stored in the display memory 13 of this embodiment is generated by the operation of the display data and a calibration parameter pre-stored in the uniform standard conversion circuit 12. Next, referring to fig. 2, fig. 2 shows a schematic diagram of an LED module applied to an LED screen display system according to the present invention. The LED on-screen display system 20 includes an array of LED modules 21, and an LED on-screen display controller 22.
Please note that the LED module array 21 is formed by combining a plurality of LED modules 10, and in this embodiment, the plurality of LED modules 10 are connected in series and horizontally combined to form the LED module array 21, and each LED module 10 includes an interface circuit 11, a uniform standard conversion circuit 12, a display memory 13, a constant current driving circuit 14, and LED lamp beads 15.
The LED screen controller 22 controls the LED module array 21 according to display data and control signals, wherein the display data and the control signals are from an internet of things cloud system (not shown) or an LED screen display calibration system (not shown). The LED screen display controller 22 is responsible for transmitting display data and control signals to each LED module 10 in the LED module array 21, or transmitting control signals to read out the history information of the LED modules in the nonvolatile memory 12a of the LED modules 10, and transmitting the history information of the LED modules to the LED screen display correction system or to the internet of things cloud system.
The uniform standard conversion circuit 12 of the present invention operates the display data with a calibration parameter pre-stored in the uniform standard conversion circuit 12 to generate and output a gray scale data, please note that this operation is still performed in each LED module 10, so that the load of the LED screen display controller 22 can be reduced.
Referring to fig. 3, fig. 3 is a schematic diagram of an LED module applied to an LED screen display and correction system according to the present invention. The LED display and correction system 30 includes an LED display system 20 and an LED correction system 31.
As described above, the LED on-screen display system 20 has the LED module array 21 formed by combining a plurality of LED modules 10 for generating an image, and the nonvolatile memory 12a in each LED module 10 stores the correction parameters or the LED module history information corresponding to each LED module 10 in advance.
The LED correction system 31 includes: the correction control module 31a is used for storing the re-correction parameters into the corresponding non-volatile memory 12a in the LED module 10; the internet of things control module 31b uploads the recalibration parameters and the history information of the LED modules to an internet of things cloud system C. It should be noted that, due to aging of the LED module 10 or replacement of the surrounding LED modules 10, the LED calibration system 31 needs to recalibrate the LED module 10 to generate a recalibration parameter to the corresponding LED module 10.
In one embodiment, the internet of things cloud system C generates a control signal to the LED module 10, and the LED module 10 performs a self-detection procedure according to the control signal, and the control signal controls the constant current driving circuit 14 to output a constant current to detect whether the LED lamp bead 15 is faulty or not; if the LED lamp bead 15 is faulty, the constant current driving circuit 14 obtains a coordinate data corresponding to the faulty LED lamp bead 15, and transmits the coordinate data to the interface circuit 12, the interface circuit 12 stores the coordinate data in the nonvolatile memory 12a, or the interface circuit 12 transmits the coordinate data to the on-screen display system 20, and then the coordinate data is transmitted to the LED calibration system 31 by the on-screen display system 20, or the coordinate data is directly transmitted back to the internet of things cloud system C by the on-screen display system 20.
Please note that, the existing LED screen display calibration method is not connected to the internet of things cloud system, but as the small-pitch LED screen display system and the Micro LED screen display system become more and more popular, the number of the required LED modules increases, and when the LED modules are about to fail or are aged, the LED screen display system and the LED modules need to be calibrated again, it becomes very important to use the internet of things cloud system and AI to manage the LED screen display system and the LED modules.
In addition, the LED module history information stored in the nonvolatile memory 12a can be read out in two ways; the correction control module 31a obtains the LED module history information through a conventional receiving card, and the internet of things cloud system C reads the LED module history information in the nonvolatile memory 12a through the internet of things control module 31b in a wired or wireless manner. When the history information of the LED modules is obtained by the internet of things cloud system C, the AI data analysis is performed to predict which LED module 10 will fail, and the repair and replacement before the failure is performed in advance. If the aged LED module can also obtain the current usage status from the usage data record of the nonvolatile memory 12a, and obtain a new correction parameter through AI data operation and analysis, the internet of things cloud system C can directly transmit the new correction parameter to the nonvolatile memory 12a in the aged LED module 10 of the LED on-screen display system, or transmit the new correction parameter through the internet of things control module 31b, and the correction control module 31a is used to store the new correction parameter into the nonvolatile memory 12a in the aged LED module 10 in a wired manner, and operate the display data and the new correction parameter stored in the uniform standard conversion circuit 12 to generate a new gray data, so that the absolute luminance or light color of the LED module 10 can be kept consistent with that of the adjacent LED module 10, and the conventional whole LED on-screen display system 20 is not required to perform correction, avoiding time and labor consumption and money consumption and achieving point-to-point correction.
Note that during the usage of the LED modules 10, the LED on-screen controller 22 controls the nonvolatile memory 12a in each LED module 10 to store the LED on-screen system history information of the LED on-screen system 20, and the nonvolatile memory 12a records the usage status of the LED modules 10 as data for AI analysis of the internet of things cloud system C. The method can effectively perform after-sale history authentication of the LED module 10, and further realize health tracking maintenance management. Each LED module 10 also has a QR code that can be directly connected to the internet of things cloud system C. Through the connection, the production history data of each LED module 10 can be known, and can be matched with the nonvolatile memory 12a in the LED module 10 for use, that is, when the nonvolatile memory 12a in the LED module 10 fails, the QR code can still be connected to the Internet of things cloud system C to search the history information of the LED module 10, so as to analyze and maintain the AI data.
The operating mode of the LED module 10 of the present invention can be divided into three phases; the first is the factory production manufacturing stage, the second is the customer use stage, and the third is the trouble shooting stage. In the factory production stage, the LED module 10 basically exists in a module type, and the correction parameters and history information of the LED module 10 are written or read out by directly transferring data with the non-volatile memory 12a in the LED module 10 through the production tool.
During the customer use phase, the LED module 10 is assembled to exist in an LED on-screen display system 20, such as the LED on-screen display system 20 shown in FIG. 2. In the working mode at this stage, the LED screen display controller 22 is required to write the history information of the LED screen display system into the LED modules 10 in each LED module array 21, so that the nonvolatile memory 12a stores the history information of the LED screen display system and stores the usage status of the LED modules 10. At this stage, the user can write or read the LED screen display system history information and the usage status of the LED module 10 in the non-volatile memory 12a through the LED screen display controller 22 for AI data analysis and health tracking management. If the usage of the LED module 10 is found to be abnormal, the corresponding LED module 10 can be found through the history information of the LED screen display system and the history information of the LED module, and the history information of the LED module 10 can be inquired and analyzed.
The fault maintenance stage can be divided into two conditions of uneven module display caused by aging and abnormal module fault display. If the correction parameter is the former, the usage status of each LED module 10 and the history information of the LED module can be used to predict a new correction parameter through AI (AI) data analysis. This can be accomplished by wired or wireless communication with the LED on-screen controller 22 without the need for field operation. If the current LED module 10 fails, the LED module 10 on the LED on-screen display system 20 is replaced with a new LED module 10, and then the new LED module 10 is analyzed and calculated to obtain new correction parameters through AI data analysis, so that the new LED module 10 has the same absolute brightness or color as the adjacent old module, and then the LED correction system 31 is used to confirm the new LED module 10. The damaged LED module 10 is sent back to the factory for maintenance, or the LED module history information in the non-volatile memory 12a of the LED module 10 can be used to assist diagnosis and maintenance, and the diagnosis result can be fed back to the AI data database as the basis for continuous improvement.
In summary, the present invention provides an architecture for LED module calibration, wherein calibration parameters and history information are stored in a non-volatile memory before the LED module leaves the factory, the calibration parameters being generated by an automatic calibration method for absolute brightness or light color. During the use period of the LED module, the LED screen display controller writes the screen display number into the module and records the use condition and the like which are equal to those of the nonvolatile memory, and the LED screen display controller can also be used for AI cloud data operation. The method can effectively perform the after-sale history authentication of the module, thereby realizing the health tracking maintenance management. The correction parameters in the LED modules and the input display image data are subjected to uniform standard conversion operation, so that each LED module can keep consistent absolute light brightness or light color and achieve point-to-point correction.
The present invention has been described in terms of the above embodiments, but the scope of the present invention is not limited thereto, and various modifications and changes can be made by those skilled in the art without departing from the gist of the present invention.
Claims (11)
1. An LED module adapted for use in an LED on-screen display system, the LED module comprising:
the interface circuit transmits display data and a control signal between the LED module and the LED screen display system;
a uniform standard conversion circuit coupled to the interface circuit for operating the display data and a calibration parameter pre-stored in the uniform standard conversion circuit to generate and output a gray data;
a display memory for storing the gray data and outputting the gray data;
a constant current driving circuit coupled to the display memory for outputting a constant current according to the gray data; and
and the LED lamp bead generates a light source according to the constant current so as to display an image.
2. The LED module of claim 1, wherein said uniform standard conversion circuit comprises:
a non-volatile memory for storing the calibration parameters corresponding to the LED module or a history of the LED module.
3. The LED module of claim 2, wherein the LED module performs a self-test procedure according to the control signal, and the control signal controls the constant current driving circuit to output the constant current to test whether the LED lamp bead is failed; the constant current driving circuit obtains corresponding coordinate data of the LED lamp bead with the fault, transmits the coordinate data to the interface circuit, and the interface circuit stores the coordinate data in the nonvolatile memory or transmits the coordinate data to the screen display system.
4. An LED on-screen display system, comprising:
an array of LED modules, the array of LED modules comprising a plurality of LED modules, each LED module comprising:
the interface circuit transmits display data and a control signal between the LED module and the LED screen display system;
a uniform standard conversion circuit coupled to the interface circuit for operating the display data and a calibration parameter pre-stored in the uniform standard conversion circuit to generate and output a gray data;
a display memory for storing the gray data and outputting the gray data;
a constant current driving circuit coupled to the display memory for outputting a constant current according to the gray data; and
the LED lamp bead generates a light source according to the constant current to display an image; and
the LED screen display controller controls the LED module array according to the display data and the control signal;
the LED screen display controller controls each LED module to store history information of an LED screen display system.
5. The LED on-screen display system of claim 4, wherein the uniform standard conversion circuit comprises:
a non-volatile memory for pre-storing the correction parameter corresponding to the LED module, or a history information of the LED on-screen display system corresponding to the LED on-screen display system.
6. The LED on-screen display system according to claim 5, wherein the LED module performs a self-detection procedure according to the control signal, and the control signal controls the constant current driving circuit to output the constant current to detect whether the LED lamp bead is failed; the constant current driving circuit obtains corresponding coordinate data of the LED lamp bead with the fault, transmits the coordinate data to the interface circuit, and the interface circuit stores the coordinate data in the nonvolatile memory or transmits the coordinate data to the screen display system.
7. The LED on-screen system of claim 6, wherein the LED on-screen controller also transmits the stored data of the non-volatile memory to an LED on-screen calibration system or an Internet of things cloud system.
8. An LED on-screen display and correction system, comprising:
an LED on-screen display system having an LED module for generating an image;
a correction control module for storing a first correction parameter into a non-volatile memory in the LED module; and
the Internet of things control module uploads the first correction parameter and the history information of the LED module to an Internet of things cloud system;
an array of LED modules, said array of LED modules comprising a plurality of said LED modules, each of said LED modules comprising:
the interface circuit transmits display data and control signals between the LED module and the LED screen display system;
a uniform standard conversion circuit coupled to the interface circuit for operating the display data with a second correction parameter or the first correction parameter pre-stored in the uniform standard conversion circuit to generate and output a gray data;
a display memory for storing the gray data and outputting the gray data;
a constant current driving circuit coupled to the display memory for outputting a constant current according to the gray data; and
the LED lamp bead generates a light source according to the constant current to display an image; and
the LED screen display controller controls the LED module array according to the display data and the control signal;
the LED screen display controller controls each LED module to store history information of an LED screen display system.
9. The LED on-screen display and correction system of claim 8, wherein the uniform standard conversion circuit has the non-volatile memory for pre-storing the second correction parameter, or the first correction parameter, or an LED module history information, or an LED on-screen display system history information corresponding to the LED module.
10. The LED on-screen display and correction system of claim 9, wherein the LED module performs a self-detection procedure according to the control signal, and the control signal controls the constant current driving circuit to detect whether the LED lamp bead is faulty; the constant current driving circuit obtains corresponding coordinate data of the LED lamp bead with the fault, transmits the coordinate data to the interface circuit, and the interface circuit stores the coordinate data in the nonvolatile memory or transmits the coordinate data to the screen display system.
11. The LED on-screen display and correction system of claim 10, wherein the LED module has a QR code by which the LED module can be directly coupled to the internet of things cloud system or to the LED correction system for AI data analysis and LED module maintenance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911197732.3A CN112996169A (en) | 2019-11-29 | 2019-11-29 | LED module with resume information, screen display and correction system |
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| CN201911197732.3A CN112996169A (en) | 2019-11-29 | 2019-11-29 | LED module with resume information, screen display and correction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113873726A (en) * | 2021-09-14 | 2021-12-31 | 深圳市航天泰瑞捷电子有限公司 | Control method and device of lighting lamp, terminal equipment and readable storage medium |
| CN116703367A (en) * | 2023-08-08 | 2023-09-05 | 深圳可视科技有限公司 | Maintenance method and system for LED liquid crystal display screen |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127191A (en) * | 2007-09-24 | 2008-02-20 | 杭州士兰微电子股份有限公司 | LED matrix screen parameter calibration system and method |
| CN101650914A (en) * | 2009-06-17 | 2010-02-17 | 北京巨数数字技术开发有限公司 | Point-to-point correction system |
| US20110309765A1 (en) * | 2010-06-22 | 2011-12-22 | Hon Hai Precision Industry Co., Ltd. | Led display device providing current correction and correction method thereof |
| CN103680411A (en) * | 2013-12-30 | 2014-03-26 | 深圳市大族元亨光电股份有限公司 | Single-wire transmission circuit and method of LED (Light-Emitting Diode) display module single-point correction data |
| CN104485068A (en) * | 2014-12-02 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Luminance-chrominance correction method and system of LED (Light Emitting Diode) display screen |
| JP2018109725A (en) * | 2017-01-06 | 2018-07-12 | 三菱電機株式会社 | Display device and display system |
| CN108538239A (en) * | 2018-04-02 | 2018-09-14 | 厦门强力巨彩光电科技有限公司 | A kind of LED display bearing calibration and system based on high in the clouds control |
| CN109887450A (en) * | 2019-03-01 | 2019-06-14 | 深圳市大像视讯科技有限公司 | A kind of LED display artificial intelligence detection |
| CN110223632A (en) * | 2019-07-26 | 2019-09-10 | 深圳市洲明科技股份有限公司 | Display screen correcting circuit and display screen |
-
2019
- 2019-11-29 CN CN201911197732.3A patent/CN112996169A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127191A (en) * | 2007-09-24 | 2008-02-20 | 杭州士兰微电子股份有限公司 | LED matrix screen parameter calibration system and method |
| CN101650914A (en) * | 2009-06-17 | 2010-02-17 | 北京巨数数字技术开发有限公司 | Point-to-point correction system |
| US20110309765A1 (en) * | 2010-06-22 | 2011-12-22 | Hon Hai Precision Industry Co., Ltd. | Led display device providing current correction and correction method thereof |
| CN103680411A (en) * | 2013-12-30 | 2014-03-26 | 深圳市大族元亨光电股份有限公司 | Single-wire transmission circuit and method of LED (Light-Emitting Diode) display module single-point correction data |
| CN104485068A (en) * | 2014-12-02 | 2015-04-01 | 西安诺瓦电子科技有限公司 | Luminance-chrominance correction method and system of LED (Light Emitting Diode) display screen |
| JP2018109725A (en) * | 2017-01-06 | 2018-07-12 | 三菱電機株式会社 | Display device and display system |
| CN108538239A (en) * | 2018-04-02 | 2018-09-14 | 厦门强力巨彩光电科技有限公司 | A kind of LED display bearing calibration and system based on high in the clouds control |
| CN109887450A (en) * | 2019-03-01 | 2019-06-14 | 深圳市大像视讯科技有限公司 | A kind of LED display artificial intelligence detection |
| CN110223632A (en) * | 2019-07-26 | 2019-09-10 | 深圳市洲明科技股份有限公司 | Display screen correcting circuit and display screen |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113873726A (en) * | 2021-09-14 | 2021-12-31 | 深圳市航天泰瑞捷电子有限公司 | Control method and device of lighting lamp, terminal equipment and readable storage medium |
| CN113873726B (en) * | 2021-09-14 | 2023-08-11 | 深圳市航天泰瑞捷电子有限公司 | Lighting lamp control method and device, terminal equipment and readable storage medium |
| CN116703367A (en) * | 2023-08-08 | 2023-09-05 | 深圳可视科技有限公司 | Maintenance method and system for LED liquid crystal display screen |
| CN116703367B (en) * | 2023-08-08 | 2024-01-23 | 深圳可视科技有限公司 | Maintenance method and system for LED liquid crystal display screen |
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