WO2022178674A1

WO2022178674A1 - Led display screen and display control method therefor

Info

Publication number: WO2022178674A1
Application number: PCT/CN2021/077500
Authority: WO
Inventors: 欧阳琴
Original assignee: 深圳市艾比森光电股份有限公司
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2022-09-01

Abstract

Provided are an LED display screen and a display control method therefor. The method comprises: acquiring display data of LED modules, wherein the display data comprises a first uniformity and a first brightness value; when the first uniformity is greater than a first threshold value, assembling the LED modules to a first LED box according to the first brightness value; and when the first uniformity is not greater than the first threshold value, assembling the LED modules to a second LED box according to the first uniformity and the first brightness value. According to the method provided in the present application, multi-angle brightness measurement is performed on LED modules, classification and grading are then performed according to the brightness difference between the LED modules, the LED modules of the same type are assembled into boxes according to the classification and grading result, and the boxes are then corrected respectively, such that brightness loss caused by correction can be effectively reduced, and the display effect and the display efficiency of a LED display screen can be greatly enhanced.

Description

A kind of LED display screen and display control method thereof

technical field

The present application relates to the technical field of display screen control, and in particular, to a light emitting diode (LED) display screen and a display control method thereof.

Background technique

With the rapid development of modern industrial technology, LED displays have gradually been widely used in people's lives and industrial production processes. The LED display can maintain normal work in various environments, and the LED display has the characteristics of high resolution, wide viewing range, long viewing distance, and large area. LED display is usually used in outdoor advertising, commercial display, stage rental, data visualization and other fields. In the LED display control system, the LED display is a flat panel display composed of small LED modules or LED boxes, which is used to display various information such as text, images, and videos. And each LED box body includes a receiving card and a plurality of LED light boards electrically connected to the receiving card, and the receiving card is used for driving the LED light board to display. The LED box of some LED displays is also equipped with an adapter card (Hub card) to connect multiple LED light boards to the receiving card. The adapter card here plays the role of interface expansion and signal transfer. Since LED displays can be widely used in various scenarios such as traffic lights, theatrical performances, news releases, etc., people's demand for LED displays is getting higher and higher. However, limited by the consistency of LED lamp beads and the processing technology of LED modules, the initial brightness value of each LED module will be quite different when it is just produced, and the calibration process can only guarantee the same LED box. Several LED modules in the body look the same brightness on the front. In the above application scenarios of the LED display, the LED display is composed of different LED cabinets. When using different batches of LED modules, or the same batch of LED modules with uneven brightness , the LED display will have the phenomenon of bright and dark blocks, and the display effect is poor.

At present, the more commonly used display control method of LED display screen is to perform die-bonding, wire bonding and LED module packaging on the LED wafers according to the sorting information of the LED wafers of each primary color, and then sort the LED modules in an orderly manner. This improves the display effect of the LED display.

However, in the actual production process, the processing of LED lamp beads and LED modules is separated. Even if the batches of LED lamp beads are screened, the processing of LED modules will still be limited by the size of LED lamp beads. Problems such as pin deviation and surface coating lead to a large deviation of the brightness of the LED module, and the LED display screen has the phenomenon of bright and dark blocks, and the display effect is not good.

SUMMARY OF THE INVENTION

The embodiment of the present application discloses an LED display screen and a display control method thereof. By measuring the luminous brightness of LED modules from multiple angles, classifying and grading the LED modules according to the brightness difference between them, and classifying the same type of LED modules according to the classification and classification results. The LED modules are assembled into LED cabinets, and then the LED cabinets are calibrated separately, which can effectively reduce the brightness loss caused by the calibration, and can also gradually arrange the sorted LED cabinets when the LED cabinets are screened. It can greatly improve the display effect and display efficiency of the LED display.

In a first aspect, an embodiment of the present application discloses a display control method for an LED display screen, including:

Obtain the display data of the LED module; the display data includes a first uniformity and a first brightness value, the first uniformity represents the brightness display uniformity obtained by measuring the LED module from the side, and the first brightness value represents from the front Measure the brightness value obtained by the above LED module;

In the case that the above-mentioned first uniformity is greater than the first threshold value, according to the above-mentioned first brightness value, the above-mentioned LED module is assembled into the first LED box;

In the case where the first uniformity is not greater than the first threshold, the LED module is assembled into the second LED box, the second LED box and the The first LED boxes are different LED boxes.

In the embodiment of the present application, the display data of the LED module is obtained first, and a light sensor can be used as a device for measuring the LED module to measure the front luminous brightness and the side multi-angle luminous brightness of the LED module. By changing the front and rear of the measuring device The luminous brightness value or illuminance value of the LED module at different angles is obtained from the left and right positions. The above display data mainly includes the first uniformity and the first brightness value. The first uniformity represents the brightness display uniformity obtained by measuring the above LED module from the side, The larger the value of the first uniformity, the higher the uniformity of the brightness display on the side of the LED module. The first brightness value represents the brightness value obtained by measuring the above-mentioned LED module from the front. The larger the first brightness value, the higher the brightness of the LED module. The higher the brightness. Then, according to the first uniformity and the first brightness value, it is jointly determined in which LED box the LED module should be assembled, that is, the assembling method of the LED box. Specifically, a first threshold value is used as a standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. In the case where the first uniformity is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display. At this time, the LED modules are graded and classified according to the first brightness value, and assembled to the first LED If the first uniformity is not greater than the first threshold, it is considered that the LED module has a problem of uneven side brightness display. At this time, according to the first uniformity and the first brightness value, the above LED module is The groups are classified and graded, and assembled into a second LED box, wherein the second LED box and the first LED box are LED boxes with different luminous brightness. In the embodiment of the present application, according to the pre-measured brightness distribution of the LED modules, the LED modules are first classified and screened according to the measurement results, and then assembled into an LED box with similar luminous brightness according to their luminous brightness, so that the LED box can be improved. It can effectively reduce the brightness loss caused by the calibration of the LED module and improve the display uniformity of the whole screen.

In a possible implementation manner of the first aspect, after the above-mentioned assembling the above-mentioned LED module to the first LED box, the above-mentioned method further includes:

Correct the above-mentioned first LED box;

After the above-mentioned LED module is assembled into the second LED box, the above-mentioned method further includes:

Correct the above-mentioned second LED box.

In the embodiment of the present application, after the LED module is assembled to the first LED box, the first LED box is calibrated, or, after the LED module is assembled to the second LED box, the second LED box is calibrated. Calibration of the cabinet can effectively reduce the brightness loss of LED modules due to calibration, and improve the display uniformity and display efficiency of the entire screen.

In a possible implementation manner of the first aspect, the above-mentioned assembling the above-mentioned LED module to the first LED box according to the above-mentioned first brightness value includes:

In the case that the first brightness value belongs to the first interval, the LED module is assembled into the first LED box, and the first interval is the brightness value interval in which the first LED box emits light.

In the embodiment of the present application, a method for assembling the LED module into the first LED box according to the first brightness value is provided when the first uniformity is greater than the first threshold. Specifically, at the first brightness value In the case of belonging to the first interval, the LED module is assembled into the first LED box, and the brightness value interval of the first LED box is the above-mentioned first interval, in other words, the LED module is assembled to emit light. In the LED box whose brightness corresponds to the first brightness value, through the embodiment of the present application, the LED modules can be classified and screened according to the front brightness, and then assembled into the LED box with similar luminous brightness. Improve the uniformity of LED cabinet calibration, so that subsequent calibration of the LED cabinet can effectively reduce the brightness loss of the LED module due to calibration, and greatly improve the display uniformity of the entire screen.

In a possible implementation manner of the first aspect, the above-mentioned assembling the above-mentioned LED module to the second LED box according to the above-mentioned first uniformity and the above-mentioned first brightness value includes:

In the case that the above-mentioned first uniformity belongs to the second interval, the above-mentioned LED module is assembled to the above-mentioned second LED box, and the above-mentioned second interval is the value interval of the side display uniformity of the light-emitting brightness of the above-mentioned second LED box. .

In the embodiment of the present application, a method for assembling the LED module to the second LED box according to the first uniformity and the first brightness value is provided under the condition that the first uniformity is not greater than the first threshold. Specifically, In the case that the first uniformity belongs to the second interval, the LED module is assembled into the second LED box, and the brightness value interval of the light emitted by the second LED box is the above-mentioned second interval, in other words, the The LED modules are assembled into the LED boxes whose luminous brightness display uniformity is corresponding to the first uniformity. Through the embodiments of the present application, the LED modules can be classified and screened according to the side brightness display uniformity, and then assembled into the LED modules. In the LED cabinet with similar brightness display uniformity on its side, the uniformity of the LED cabinet calibration can be improved, so that the subsequent calibration of the LED cabinet can effectively reduce the brightness loss of the LED module caused by the calibration, and greatly improve the The display uniformity of the whole screen.

In a possible implementation manner of the first aspect, the above-mentioned assembling the above-mentioned LED module to the above-mentioned second LED box body includes:

In the case where the number of the above-mentioned LED modules is greater than the number of the above-mentioned second LED box assembly modules, the above-mentioned LED modules whose first brightness value belongs to the third interval are assembled into the above-mentioned second LED box, the above-mentioned The third interval is the luminance value interval of the light emitted by the second LED box.

In the embodiment of the present application, a method for assembling the LED module to the second LED box according to the first uniformity and the first brightness value is provided under the condition that the first uniformity is not greater than the first threshold. Specifically, In the case that the first uniformity belongs to the second interval, the LED module is assembled into the second LED box, and the brightness value interval of the light emitted by the second LED box is the above-mentioned second interval. In the case where the number of LED modules with the above-mentioned uniformity of side brightness display belonging to the second interval is greater than the number of modules assembled in the second LED box, the LED modules that meet the conditions can be determined according to the first brightness value of the LED modules. The group is further classified and screened, that is, the LED modules whose first uniformity belongs to the second interval and the first brightness value belongs to the third interval are assembled into the second LED box, and the side brightness of the second LED box shows the uniformity. The value interval of , is the second interval, and the frontal brightness value interval of the second LED box is the third interval. In other words, the LED modules are assembled until the uniformity of the luminous brightness display corresponds to the first uniformity, And in the LED box with the front brightness corresponding to the first brightness value, through the embodiment of the present application, the LED modules can be classified and screened according to the uniformity of the side brightness display, and then the LED modules can be sorted according to the front brightness. The group is classified and screened for secondary classification, and then assembled into LED cabinets with similar brightness display uniformity on the side and similar brightness on the front side, which can improve the uniformity of LED cabinet calibration, so that the LED cabinet can be calibrated later , which can effectively reduce the brightness loss of LED modules due to calibration, and greatly improve the display uniformity of the entire screen.

In a second aspect, an embodiment of the present application discloses a display control device for an LED display screen, including:

The acquisition unit is used to acquire the display data of the LED module; the display data includes a first uniformity and a first brightness value, the first uniformity represents the brightness display uniformity obtained by measuring the LED module from the side, the first uniformity The brightness value represents the brightness value obtained by measuring the above LED module from the front;

an assembling unit, configured to assemble the LED module to the first LED box according to the first brightness value when the first uniformity is greater than the first threshold;

The above-mentioned assembling unit is also used for assembling the above-mentioned LED module into the second LED box according to the above-mentioned first uniformity degree and the above-mentioned first brightness value under the condition that the above-mentioned first uniformity is not greater than the above-mentioned first threshold, the above-mentioned The second LED box and the above-mentioned first LED box are different LED boxes.

In a possible implementation manner of the second aspect, the above-mentioned device further includes:

a calibration unit for calibrating the above-mentioned first LED box;

The above-mentioned calibration unit is also used for calibrating the above-mentioned second LED box.

In a possible implementation manner of the second aspect, the assembling unit is specifically configured to assemble the LED module to the first LED box when the first luminance value belongs to the first interval, and the first LED box An interval is the luminance value interval of the first LED box to emit light.

In a possible implementation manner of the second aspect, the assembling unit is further configured to assemble the LED module to the second LED box when the first uniformity belongs to the second interval, and the above The second interval is a value interval for the uniformity of the lateral display of the light-emitting brightness of the second LED box.

In a possible implementation manner of the second aspect, the above-mentioned assembling unit is further configured to assemble the above-mentioned first LED box assembly module when the number of the above-mentioned LED modules is greater than the number of the above-mentioned second LED box assembly modules. The LED modules whose brightness values belong to a third interval are assembled into the second LED box, and the third interval is the brightness value interval in which the second LED box emits light.

In a third aspect, an embodiment of the present application discloses an electronic device for display control of an LED display screen, the electronic device includes a memory and a processor, wherein the memory stores program instructions; when the program instructions are executed by the processor, The processor is caused to perform the method as in the first aspect or in any possible implementation manner of the first aspect.

In a fourth aspect, an embodiment of the present application discloses a computer-readable storage medium, in which a computer program or instruction is stored; when the computer program or instruction is run on one or more processors, the The method in an aspect or any one of the possible implementations of the first aspect.

In a fifth aspect, an embodiment of the present application discloses a computer program product, where the computer program product includes program instructions, and when executed by a processor, the program instructions cause the processor to execute any one of the first aspect or the first aspect Methods in possible implementations.

In the embodiment of the present application, the multi-angle luminous brightness measurement is performed on the LED modules, and then the LED modules are classified and graded according to the brightness difference between the LED modules, and the LED modules of the same type are assembled into LED boxes according to the classification and classification results. The cabinets are calibrated separately, which can effectively reduce the brightness loss caused by the calibration. When the LED cabinets are placed on the screen, the LED cabinets stored in different categories can be gradually arranged, which greatly improves the display effect of the LED display. Show efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the following briefly introduces the accompanying drawings that are required in the embodiments or the background technology of the present application.

FIG. 1 is a schematic structural diagram of a display control of an LED display screen provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of display control of another LED display screen provided by an embodiment of the present application;

3 is a schematic structural diagram of an LED module provided by an embodiment of the present application;

4 is a schematic flowchart of a display control method for an LED display screen provided by an embodiment of the present application;

FIG. 5a is a schematic structural diagram of a luminance measurement of an LED module provided by an embodiment of the present application;

FIG. 5b is a schematic structural diagram of another LED module brightness measurement provided by an embodiment of the present application;

FIG. 5c is a schematic structural diagram of another LED module brightness measurement provided by an embodiment of the present application;

6 is a schematic flowchart of another display control method for an LED display screen provided by an embodiment of the present application;

7 is a schematic structural diagram of a display control device for an LED display screen provided by an embodiment of the application;

FIG. 8 is a schematic structural diagram of a display control device for an LED display screen provided by an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described below with reference to the accompanying drawings.

The terms "first" and "second" in the description, claims and drawings of the present application are only used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device, etc. that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, etc., or optional It also includes other steps or units inherent to these processes, methods, products or devices, etc.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In this application, "at least one (item)" means one or more, "plurality" means two or more, "at least two (item)" means two or three and three In the above, "and/or" is used to describe the relationship of related objects, indicating that there can be three kinds of relationships, for example, "A and/or B" can mean: only A exists, only B exists, and both A and B exist three A case where A and B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one of the following" or similar expressions, refers to any combination of these items. For example, at least one (a) of a, b or c, can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ".

The embodiments of the present application provide an LED display screen and a display control method thereof. In order to describe the solution of the present application more clearly, some knowledge related to the LED display screen is first introduced below.

LED display box: The LED display box is simply a screen composed of several display units (unit display panels or unit display boxes) that can be combined and spliced. In order to meet different environments, plus a set of appropriate controllers (main control board or control system), various specifications of display boards (or unit boxes) can be combined with controllers of different control technologies to form many kinds of LED displays. screen to meet different display needs.

LED display module: LED display module (light board) is one of the main components that make up the finished LED display. It mainly consists of LED lights, printed circuit boards (PCBs), drive chips, resistors, Consists of capacitors and plastic kits.

The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a display control of an LED display screen provided by an embodiment of the present application. As shown in Figure 1, the architecture diagram includes an LED display screen, a control card, an LED screen control computer, a power supply and a switch. Among them, the power supply is used to supply power to the control card and the LED display screen, and the user can control the power on and off through the switch, thereby controlling the startup of the control card and the LED display screen. The LED screen control computer will output a video signal to the LED display screen, and the video signal is used to present the corresponding image information through the LED display module or light board in the LED display screen. The LED screen control computer is connected to the control card network, and data transmission can be performed between the two through a high definition multimedia interface (HDMI) or a digital visual interface (DVI). The internal structure of the control card mainly includes a microcontroller unit (MCU) and a field programmable gate array (FPGA). Among them, the MCU is used to process the test parameters and monitor the working condition of the entire LED display box, and the FPGA is used to receive the video signal sent by the LED screen control computer, and drive the light board of the LED display screen to display the image corresponding to the video signal. . After the control card is powered on by the power supply, it can forward the video signal of the LED screen control computer to the receiving card of the LED display screen, and the video signal forwarded by the control card is a parallel video signal. After the LED display is powered by the power supply, it can start the drive module in the LED display, and then start the LED display module or light board in the LED display. The drive module in the LED display receives the parallel video signal sent by the control card. Then, convert it into a serial video signal that can be recognized by the LED display screen, and transmit the serial video signal to the LED display screen. After the LED display screen receives the serial video signal, it lights up the LED lamp beads and displays the same The image information corresponding to the serial video signal.

Optionally, the architecture diagram may further include a power management module and a switch corresponding thereto, wherein the control card and the LED display screen respectively include a power supply for supplying power to themselves. The user can control the control signal sent by the power management module through the switch, and the control signal can be used to control the power supply of the control card and the LED display itself to turn on and off, so as to achieve the effect of indirectly controlling the start of the control card and the LED display. Specifically, the control signal sent by the power management module can also be used to control the turn-on sequence of the power supply provided by the control card and the LED display itself, that is, the control card and the LED display can be controlled to start in different sequences.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of display control of another LED display screen provided by an embodiment of the present application. As shown in Figure 2, the structure diagram is a general component of an LED display screen. The LED display screen is spliced one by one display unit, and M*N display units are spliced into an LED display screen. The splicing method Including but not limited to the splicing method in Figure 2. Each display unit represents an LED display module, and each LED display module is composed of several LED lamp beads. In the architecture shown in FIG. 2 , the host computer sends a display command, and after receiving the display command, the display module 1 communicatively connected to the host computer lights up the LED lamp beads and displays the image information corresponding to the display command; and At the same time, the above-mentioned display module 1 also acts as a transfer interface to transfer the received display command to the other display modules respectively. After the other display modules receive the display command, the LED lamp beads are correspondingly lit to display the Image information corresponding to the display command. It can be used to display different texts, images, and video information, and can be widely used in various scenarios such as traffic lights, theatrical performances, and news releases.

Specifically, in addition to the above-mentioned several LED lamp beads, the LED display module is also composed of various components and equipment. Please refer to FIG. 3 , which is a schematic structural diagram of an LED module according to an embodiment of the present application. The LED display module can be any one of the display modules 1 to (M+N) in the LED display in the above-mentioned FIG. 2 , and its interior mainly includes a power supply, a power management module, a driving display system, storage system and control system. Among them, the power supply is used to convert alternating current into direct current for use by other functional modules (such as a power management module, a driving display system, a control system, and a storage system). The power management module is used to manage the power supply and realize the time-sharing power-on function, that is, to control the power-on sequence of different functional modules (such as the drive display system, the storage system, and the control system). The control system receives the display instruction sent by the host computer, parses the display instruction, and then obtains the display data corresponding to the display instruction from the storage system, and transmits it to the drive display system. The drive display system can be an FPGA drive display system, using for displaying the image information corresponding to the above display data.

At present, limited by the consistency of LED lamp beads and the processing technology of LED modules, the initial brightness value of each LED module will be quite different when it is just produced. Through the commonly used calibration process, only the same LED box can be guaranteed. Several LED modules in the body seem to have the same brightness on the front, but the LED display is composed of different LED cabinets. When using different batches of LED modules, or the same batch but with uneven brightness When the LED modules are spliced together, the LED display screen will have bright and dark blocks, and the display effect will be poor, which will affect the viewer's experience. In this regard, the more commonly used display control method of LED display screen is to sort the LED wafers of the three primary colors of red, green and blue according to the optical characteristic parameters. The LED wafers of the three primary colors of blue and blue are subjected to die bonding, wire bonding and LED module packaging, and then the LED modules are sorted in an orderly manner to improve the display effect of the LED display. However, in the actual production process, the processing of LED lamp beads and LED modules is separated. Even if the batches of LED lamp beads are screened, the processing of LED modules will still be limited by the size of LED lamp beads. Problems such as pin deviation and surface coating lead to a large deviation of the brightness of the LED module, and the LED display screen has the phenomenon of bright and dark blocks, and the display effect is not good.

In view of the above-mentioned problem that the display effect of the LED display screen is not good, the present application is based on the structure of the display control of the LED display screen provided in the above-mentioned FIG. 1 and FIG. 2, and the structure of the LED module provided in the above-mentioned FIG. A display control method of an LED display screen. Compared with the more commonly used display control methods at present, this method measures the luminous brightness of LED modules from multiple angles, and then classifies and grades according to the brightness difference between LED modules, and assembles similar LED modules according to the classification and classification results. It can effectively reduce the brightness loss caused by the correction, and greatly improve the display effect and display efficiency of the LED display.

Please refer to FIG. 4. FIG. 4 is a schematic flowchart of a display control method for an LED display screen provided by an embodiment of the present application. The method includes but is not limited to the following steps:

Step 401: Acquire display data of the LED module, where the display data includes a first uniformity and a first brightness value.

The embodiment of the present application first acquires display data of the LED module, where the display data includes a first uniformity and a first brightness value. The first uniformity indicates the uniformity of the brightness display obtained by measuring the above-mentioned LED module from the side. The larger the value of the first uniformity is, the higher the uniformity of the brightness display on the side of the LED module is, and the first brightness value indicates that the above-mentioned LED is measured from the front. The brightness value obtained by the module, the larger the first brightness value, the higher the front brightness of the LED module.

The above-mentioned display data of the LED module including the first uniformity and the first brightness value can be used as a device for measuring the LED module, such as a light sensor, to measure the front luminous brightness and the side multi-angle luminous brightness of the LED module. Obtained, by changing the front, rear, left and right positions of the measuring device, the luminous brightness values or illuminance values of the LED modules at different angles are obtained.

For details, please refer to FIG. 5a. FIG. 5a is a schematic structural diagram of an LED module brightness measurement provided by an embodiment of the present application. As can be seen from FIG. 5a, the LED module in the embodiment of the present application uses an optical sensor as a measuring device to measure the The front brightness of the LED lamp beads arranged on the module is measured, and the measurement can obtain a series of display data representing the brightness value or illuminance value of the LED module. a brightness value.

Please refer to FIG. 5b. FIG. 5b is a schematic structural diagram of another LED module brightness measurement provided by the embodiment of the application. It can be seen from FIG. 5b that the LED module in the embodiment of the application uses an optical sensor as a measuring device to measure the LED The side brightness of the LED lamp beads arranged on the module is measured, either from the left side in the direction of θ angle, or from the right side in the direction of θ angle; for the same reason, please Referring to FIG. 5c, FIG. 5c is a schematic structural diagram of another LED module brightness measurement provided by the embodiment of the present application. Using an optical sensor as a measurement device, the side brightness of the LED lamp beads arranged on the LED module is measured, which can be The brightness is measured from the left side in a direction different from the angle θ, and it can also be measured from the right side in a direction different from the angle θ; through the above multi-angle side brightness measurement, a series of indicators representing the LED module can be obtained. The display data of the brightness value or the illuminance value of the LED module can be obtained from the display data, and the first uniformity indicating the uniformity of the brightness display on the side of the LED module can be obtained.

Step 402: In the case that the first uniformity is greater than the first threshold, assemble the LED module into the first LED box according to the first brightness value.

From the above-mentioned step 401, the first uniformity indicating the uniformity of the brightness display on the side of the LED module, and the first brightness value indicating the brightness of the front of the LED module can be obtained. Then, according to the first uniformity and the first brightness value, it is jointly determined in which LED box the LED module should be assembled, that is, the assembly method of the LED module.

Specifically, it can be determined whether the LED module has the problem of uneven side brightness display according to the measured display data. The first threshold value is used as a standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. In the case where the first uniformity is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display. At this time, the LED modules are graded and classified according to the first brightness value, and assembled to the first LED box. The method of assembling the LED module to the first LED box according to the first brightness value may be to assemble the LED module to the first LED box when the first brightness value belongs to the first interval, and the first LED box The brightness value interval of the light emitted by an LED box is the above-mentioned first interval, in other words, the LED module is assembled into the LED box whose luminous brightness corresponds to the first brightness value. Further, after the LED module is assembled to the first LED box, the first LED box is calibrated, which can effectively reduce the brightness loss of the LED module due to calibration. Through the embodiment of the present application, the LED modules can be classified and screened according to the brightness of the front surface, and then assembled into the LED box with similar luminous brightness, which can improve the uniformity of the calibration of the LED box, so that the LED module can be adjusted later. Calibration of the cabinet can effectively reduce the brightness loss of LED modules due to calibration, and greatly improve the display uniformity of the entire screen.

Step 403: Under the condition that the first uniformity is not greater than the first threshold, based on the first uniformity and the first brightness value, assemble the LED module into the second LED box.

Similar to the above step 402, after obtaining the display data including the first uniformity and the first brightness value, the embodiment of the present application can determine whether the LED module has the problem of uneven side brightness display according to the measured display data. The first threshold value is still used as the standard value of the uniformity of the side brightness display of the LED module. The first threshold value is not a fixed value and may vary according to different application scenarios. When the first uniformity is not greater than the first threshold, it is considered that the LED module has a problem of uneven side brightness display. At this time, the LED modules should be classified according to the first uniformity and the first brightness value. Classified and assembled into a second LED box, wherein the second LED box and the first LED box are LED boxes with different luminous brightness. Specifically, the method of assembling the LED module to the second LED box according to the first uniformity and the first brightness value may be to assemble the LED module to the second LED box when the first uniformity belongs to the second interval. The second LED box, the interval of the brightness value of the second LED box is the above-mentioned second interval, in other words, the LED module is assembled into the LED box with the brightness display uniformity corresponding to the first uniformity. middle. Further, after the LED module is assembled into the second LED box, the second LED box is calibrated, which can effectively reduce the brightness loss of the LED module caused by the calibration. Through the embodiment of the present application, the LED modules can be classified and screened according to the uniformity of the side brightness display, and then assembled into an LED box with a similar degree of uniformity of the side brightness display, which can improve the uniformity of the LED box calibration. , so that the subsequent calibration of the LED box can effectively reduce the brightness loss of the LED module due to calibration, and greatly improve the display uniformity of the entire screen.

In addition, in the case that the first uniformity belongs to the second interval, the LED module is assembled into the second LED box, and the brightness value interval of the light emitted by the second LED box is the above-mentioned second interval, and at the same time , in the case that the number of LED modules whose side brightness display uniformity belongs to the second interval is greater than the number of the second LED box assembly modules, the first brightness value of the LED modules can also be used to determine the number of LED modules that meet the conditions. The LED modules are further classified and screened, that is, the LED modules with the first uniformity belonging to the second interval and the first brightness value belonging to the third interval are assembled into the second LED box, and the side brightness of the second LED box is illuminated. The value interval of the display uniformity is the second interval, and the front luminance value interval of the second LED box is the third interval. In other words, the LED modules are assembled to the luminance display uniformity and the first uniformity. In the corresponding LED box, and the front brightness of the light emission corresponds to the first brightness value, according to the embodiment of the present application, the LED modules can be classified and screened according to the uniformity of the side brightness display, and then the LED modules can be classified and screened according to the brightness of the front side. The LED modules are classified and screened for secondary classification, and then assembled into LED boxes with similar brightness display uniformity on the side and similar brightness on the front. It can effectively reduce the brightness loss of LED modules due to calibration, and greatly improve the display uniformity of the whole screen.

The embodiment of the present application is used to improve the problem of inconsistent brightness and poor display effect of the LED display screen when the screen is mounted. For example, for an LED display screen composed of 864 LED modules with different brightness Each LED box is composed of 8 LED modules arranged in a 2*4 manner. In the case of random arrangement, the human eye can see obvious differences in the brightness of the LED display. For LED modules with calibration, the calibration is generally carried out in units of LED cabinets. After calibration, the brightness difference in the LED cabinet will be reduced, but at the same time, the brightness of a part of the LED modules will also be lost, and the difference between the LED cabinet and the cabinet will be reduced. There are still obvious brightness differences, and the LED display still has brightness differences visible to the human eye; if the LED display is calibrated in units of the entire screen, the brightness uniformity of the entire screen will be improved, but a large part of the LED mode will be lost. Group brightness. In addition to the front display effect, when the LED module has the problem of uneven brightness display on the side, even if the front brightness of the LED display is the same, when the human eye looks at a large angle from the side, the brightness between different LED modules will also be different. The difference is larger, and the larger the side viewing angle, the larger the difference in brightness. In order to reduce the brightness loss of the LED display screen and ensure the display effect when viewed from a large angle on the front and side, the embodiment of the present application measures the luminous brightness of the LED modules from multiple angles, and then classifies and grades them according to the brightness difference between the LED modules. And according to the classification and grading results, similar LED modules are assembled into LED cabinets, and then the LED cabinets are calibrated separately, which can effectively reduce the brightness loss caused by the calibration, and can also classify the LED cabinets when they are screened. The stored LED boxes are arranged gradually, which greatly improves the display effect and display efficiency of the LED display.

Please refer to FIG. 6 , which is a schematic flowchart of another display control method of an LED display screen provided by an embodiment of the present application. FIG. 6 can be understood as a refinement of the implementation process steps of the display control method of the LED display screen provided in the above-mentioned FIG. 4 .

First, the multi-angle luminous brightness measurement of the LED module (see step 601) includes measuring the front brightness value of the LED module from the front, and measuring the side brightness display uniformity of the LED module from the side multi-angle. Then, according to the measured brightness difference, it is judged whether the LED module has the problem of uneven side brightness display (refer to step 602), and the first threshold can be used as the standard value of the uniformity of the side brightness display of the LED module, and the first threshold is not a The fixed value can vary depending on the application scenario. When the uniformity of the side brightness display of the LED module is greater than the first threshold, it is considered that the LED module does not have the problem of uneven side brightness display; If the uniformity of the side brightness display of the module is not greater than the first threshold, it is considered that the LED module has a problem of uneven side brightness display.

Specifically, in the case that the LED module does not have the problem of uneven side brightness display, according to the front brightness value obtained by measuring the LED module, the LED module is classified and classified (see step 603), and according to the classification result, the The first LED box is assembled, the first LED box is calibrated after assembly, and the calibrated first LED box is classified again (refer to step 604 ). Wherein, the method of classifying the LED modules according to the front brightness value obtained by measuring the LED modules and assembling them into the first LED box may be that when the front brightness value belongs to the first interval, the LED module The group is assembled to the first LED box. The first interval can be classified with the maximum value of the front brightness value as the standard value and the front brightness difference of 3% as an interval level. The brightness value interval of the first LED box emits light. That is, the above-mentioned first interval, in other words, the LED module is assembled into the LED box whose light emission brightness corresponds to the front brightness value. The calibration of the first LED box after assembly can effectively reduce the brightness loss of the LED module caused by calibration. Through the embodiment of the present application, the LED modules can be classified and screened according to the brightness of the front surface, and then assembled into the LED box with similar luminous brightness, which can improve the uniformity of the calibration of the LED box, so that the LED module can be adjusted later. Calibration of the cabinet can effectively reduce the brightness loss of LED modules due to calibration, and greatly improve the display uniformity of the entire screen.

On the other hand, in the case that the LED module has the problem of uneven side brightness display, according to the side brightness display uniformity obtained by measuring the LED module, the LED module is first graded and classified (see step 605), and according to Based on the results of the first classification and classification, the LED modules are classified according to the front brightness (see step 606), and then the second LED box is assembled according to the results of the second classification and classification, and the second LED box is assembled after the assembly. After calibration, classify the calibrated second LED cabinets again (see step 607). Among them, according to the uniformity of the side brightness display obtained by measuring the LED module, the method of first grading and classifying the LED module may be that when the uniformity of the side brightness display belongs to the second interval, the LED module Assembled to the second LED box, the second interval can be the same category as the side brightness display uniformity is less than or equal to 0.5%, and the brightness value interval of the second LED box is the above-mentioned second interval, in other words, it is The LED modules are assembled into an LED box whose luminous brightness display uniformity corresponds to the above-mentioned side brightness display uniformity. According to the results of the first classification and classification, the method of classifying the LED modules according to the front brightness may be that the above-mentioned side brightness display uniformity belongs to the second interval, and the above-mentioned side brightness display uniformity belongs to the second interval. LED modules When the number of LED modules is greater than the number of modules assembled in the second LED box, according to the front brightness of the LED modules, the LED modules whose side brightness display uniformity meets the conditions are further classified and screened, that is, the above-mentioned side brightness display uniformity is further classified and screened. The LED module whose level belongs to the second interval and whose front luminance value belongs to the third interval is assembled into the second LED box. The frontal brightness value interval of the two LED boxes is the third interval. In other words, the LED modules are assembled to the point where the uniformity of the luminous brightness display corresponds to the first uniformity, and the frontal brightness corresponds to the first brightness value. in the LED box. The calibration of the second LED box after assembly can effectively reduce the brightness loss of the LED module due to calibration. According to the embodiment of the present application, the LED modules can be classified and screened according to the uniformity of the side brightness display, and then the LED modules can be classified and screened according to the front brightness, and then assembled to the uniformity of the side brightness display. In the LED cabinets that are similar and have similar front brightness, the uniformity of the LED cabinet calibration can be improved, so that the subsequent calibration of the LED cabinet can effectively reduce the brightness loss of the LED module caused by the calibration, and greatly improve the The display uniformity of the whole screen.

The methods of the embodiments of the present application are described in detail above, and the apparatuses of the embodiments of the present application are provided below.

Please refer to FIG. 7 , which is a schematic structural diagram of a display control device for an LED display screen provided by an embodiment of the present application. The display control device 70 of the LED display screen may include an acquisition unit 701 and an assembly unit 702, wherein the description of each unit is as follows:

The obtaining unit 701 is used to obtain the display data of the LED module; the above-mentioned display data includes a first uniformity and a first brightness value, the above-mentioned first uniformity represents the brightness display uniformity obtained by measuring the above-mentioned LED module from the side, and the above-mentioned first uniformity A brightness value represents the brightness value obtained by measuring the above-mentioned LED module from the front;

The assembling unit 702 is used for assembling the LED module to the first LED box according to the first brightness value when the first uniformity is greater than the first threshold;

The assembling unit 702 is further configured to assemble the LED module into the second LED box according to the first uniformity and the first brightness value when the first uniformity is not greater than the first threshold, The second LED box and the first LED box are different LED boxes.

In a possible implementation manner, the above-mentioned apparatus 70 further includes:

The calibration unit 703 is used for calibrating the above-mentioned first LED box;

The above-mentioned calibration unit 703 is also used for calibrating the above-mentioned second LED box.

In a possible implementation, the assembling unit 702 is specifically configured to assemble the LED module into the first LED box when the first luminance value belongs to the first interval, and the first interval is The luminance value interval of the light emitted by the first LED box.

In a possible implementation manner, the assembling unit 702 is further configured to assemble the LED module into the second LED box when the first uniformity belongs to the second interval, and the second interval It is the value range of the uniformity degree displayed on the side of the luminous brightness of the second LED box.

In a possible implementation manner, the above-mentioned assembly unit 702 is further configured to assign the above-mentioned first brightness value to the above-mentioned first brightness value when the number of the above-mentioned LED modules is greater than the above-mentioned number of the above-mentioned second LED box assembly modules. The LED modules in the third section are assembled to the second LED box, and the third section is the brightness value section of the light emitted by the second LED box.

According to the embodiment of the present application, each unit in the apparatus shown in FIG. 7 may be merged into one or several other units, respectively or all, or some unit(s) may be further divided into smaller functional units. It is composed of multiple units, which can realize the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above-mentioned units are divided based on logical functions. In practical applications, the function of one unit may also be implemented by multiple units, or the functions of multiple units may be implemented by one unit. In other embodiments of the present application, the terminal-based terminal may also include other units. In practical applications, these functions may also be implemented with the assistance of other units, and may be implemented by cooperation of multiple units.

It should be noted that, the implementation of each unit may also correspond to the corresponding description with reference to the method embodiments shown in FIG. 4 and FIG. 6 .

In the display control device of the LED display screen described in FIG. 7, the multi-angle luminous brightness measurement is performed on the LED modules, and then the LED modules are classified and graded according to the brightness difference between the LED modules, and the LED modules of the same type are classified according to the classification and classification results. The LED cabinets are assembled into LED cabinets, and then the LED cabinets are calibrated separately, which can effectively reduce the brightness loss caused by the calibration. When the LED cabinets are screened, the LED cabinets stored in different categories can be arranged gradually. The display effect and display efficiency of the LED display screen are greatly improved.

Please refer to FIG. 8 . FIG. 8 is a schematic structural diagram of a display control device 80 of an LED display screen provided by an embodiment of the present application. The display control device 80 of the LED display screen may include a memory 801 and a processor 802 . Further optionally, a bus 803 may also be included, wherein the memory 801 and the processor 802 are connected through the bus 803 .

Among them, the memory 801 is used to provide a storage space, and data such as an operating system and a computer program can be stored in the storage space. The memory 801 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read only memory (EPROM), or Portable read-only memory (compact disc read-only memory, CD-ROM).

The processor 802 is a module that performs arithmetic operations and logical operations, and can be a processing module such as a central processing unit (CPU), a graphics processing unit (GPU), or a microprocessor (microprocessor unit, MPU). of one or more combinations.

A computer program is stored in the memory 801, and the processor 802 calls the computer program stored in the memory 801 to perform the following operations:

In a possible implementation manner, after the above-mentioned assembling of the above-mentioned LED module into the first LED box, the above-mentioned processor 802 is further configured to execute:

Correct the above-mentioned first LED box;

After the above-mentioned LED module is assembled into the second LED box, the above-mentioned processor 802 is further configured to execute:

Correct the above-mentioned second LED box.

In a possible implementation manner, in terms of assembling the above-mentioned LED module into the first LED box according to the above-mentioned first brightness value, the above-mentioned processor 802 is further configured to execute:

In a possible implementation manner, in terms of assembling the LED module into the second LED box according to the first uniformity and the first brightness value, the processor 802 is further configured to execute:

In a possible implementation manner, in the above-mentioned assembling of the above-mentioned LED module to the above-mentioned second LED box, the above-mentioned processor 802 is further configured to execute:

In the embodiment of the present application, a method for assembling the LED module to the second LED box according to the first uniformity and the first brightness value is provided under the condition that the first uniformity is not greater than the first threshold. Specifically, In the case that the first uniformity belongs to the second interval, the LED module is assembled into the second LED box, and the brightness value interval of the light emitted by the second LED box is the above-mentioned second interval. At the same time, in the In the case where the number of LED modules with the above-mentioned uniformity of side brightness display belonging to the second interval is greater than the number of modules assembled in the second LED box, the LED modules that meet the conditions can be determined according to the first brightness value of the LED modules. The group is further classified and screened, that is, the LED modules whose first uniformity belongs to the second interval and the first brightness value belongs to the third interval are assembled into the second LED box, and the side brightness of the second LED box shows the uniformity. The value interval of , is the second interval, and the frontal brightness value interval of the second LED box is the third interval. In other words, the LED modules are assembled until the uniformity of the luminous brightness display corresponds to the first uniformity, And in the LED box with the front brightness corresponding to the first brightness value, through the embodiment of the present application, the LED modules can be classified and screened according to the uniformity of the side brightness display, and then the LED modules can be sorted according to the front brightness. The group is classified and screened for secondary classification, and then assembled into LED cabinets with similar brightness display uniformity on the side and similar brightness on the front side, which can improve the uniformity of LED cabinet calibration, so that the LED cabinet can be calibrated later. , which can effectively reduce the brightness loss of LED modules due to calibration, and greatly improve the display uniformity of the entire screen.

It should be noted that, the specific implementation of the display control device 80 of the LED display screen may also correspond to the corresponding descriptions of the method embodiments shown in FIG. 4 and FIG. 6 .

In the display control device 80 of the LED display screen described in FIG. 8 , by measuring the luminous brightness of the LED modules from multiple angles, and then classifying and grading according to the brightness difference between the LED modules, and classifying the same LED modules according to the classification and classification results. The LED cabinets are assembled into LED cabinets, and then the LED cabinets are calibrated separately, which can effectively reduce the brightness loss caused by the calibration. When the LED cabinets are screened, the LED cabinets stored in different categories can be arranged gradually. The display effect and display efficiency of the LED display screen are greatly improved.

Embodiments of the present application also provide a computer-readable storage medium, in which computer programs or instructions are stored; when the computer programs or instructions are executed on one or more processors, FIG. 4 and FIG. 4 can be implemented. 6 shows the display control method of the LED display screen.

The embodiment of the present application also provides a computer program product, when the computer program product runs on the processor, the display control method of the LED display screen shown in FIG. 4 and FIG. 6 can be implemented.

To sum up, through the multi-angle luminous brightness measurement of LED modules, classification and classification are performed according to the brightness difference between LED modules, and similar LED modules are assembled into LED boxes according to the classification and classification results. The cabinets are calibrated separately, which can effectively reduce the brightness loss caused by the calibration. When the LED cabinets are placed on the screen, the LED cabinets stored in different categories can be gradually arranged, which greatly improves the display effect of the LED display. Show efficiency.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented, and the processes can be completed by hardware related to a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed , which may include the processes of the foregoing method embodiments. The aforementioned storage medium includes: read-only memory ROM or random-access storage memory RAM, magnetic disk or optical disk and other media that can store computer program codes.

Claims

A display control method for an LED display screen, comprising:

Obtain the display data of the LED module; the display data includes a first uniformity and a first brightness value, the first uniformity represents the brightness display uniformity obtained by measuring the LED module from the side, and the first brightness The value represents the brightness value obtained by measuring the LED module from the front;

In the case that the first uniformity is greater than the first threshold, assembling the LED module to the first LED box according to the first brightness value;

Under the condition that the first uniformity is not greater than the first threshold, the LED module is assembled to the second LED box according to the first uniformity and the first brightness value, and the first The two LED boxes and the first LED box are different LED boxes.
The method according to claim 1, wherein after assembling the LED module to the first LED box, the method further comprises:

calibrating the first LED box;

After assembling the LED module to the second LED box, the method further includes:

The second LED box is calibrated.
The method according to claim 1 or 2, wherein the assembling the LED module to the first LED box according to the first brightness value comprises:

In the case that the first brightness value belongs to a first interval, the LED module is assembled to the first LED box, and the first interval is the brightness value interval of the light of the first LED box.
The method according to claim 1 or 2, wherein the assembling the LED module to the second LED box according to the first uniformity and the first brightness value comprises:

In the case that the first uniformity belongs to the second interval, the LED module is assembled to the second LED box, and the second interval is that the side surface of the second LED box shows uniform luminous brightness. range of values.
The method according to claim 4, wherein the assembling the LED module to the second LED box comprises:

When the number of the LED modules is greater than the number of the second LED box assembly modules, the LED modules with the first brightness value belonging to the third interval are assembled to the second LED module For the LED box, the third interval is the brightness value interval of the light emitted by the second LED box.
A display control device for an LED display screen, characterized in that it includes:

an acquisition unit for acquiring display data of the LED module; the display data includes a first uniformity and a first brightness value, and the first uniformity represents the brightness display uniformity obtained by measuring the LED module from the side, The first brightness value represents the brightness value obtained by measuring the LED module from the front; the assembling unit is used for, when the first uniformity is greater than the first threshold, according to the first brightness value, The LED module is assembled to the first LED box;

The assembling unit is further configured to assemble the LED module to the first level according to the first uniformity and the first brightness value under the condition that the first uniformity is not greater than the first threshold. Two LED boxes, the second LED box and the first LED box are different LED boxes.
The device according to claim 6, wherein the device further comprises:

a calibration unit for calibrating the first LED box;

The calibration unit is also used for calibrating the second LED box.
The device according to claim 6 or 7, wherein the assembling unit is specifically configured to assemble the LED module to the first interval when the first luminance value belongs to the first interval LED box, the first interval is the brightness value interval of the light emitted by the first LED box.
The device according to claim 6 or 7, wherein the assembling unit is further configured to assemble the LED module to the first uniformity when the first uniformity belongs to the second interval. Two LED cabinets, the second interval is a value interval of the uniformity of the side display of the luminous brightness of the second LED cabinet.
The device according to claim 9, wherein the assembling unit is further configured to, in the case that the number of the LED modules is greater than the number of the second LED box assembly modules, to assemble the The LED module with the first brightness value belonging to the third interval is assembled to the second LED box, and the third interval is the brightness value interval of the light of the second LED box.
An electronic device, characterized in that it comprises: a processor and a memory, wherein the memory stores program instructions; when the program instructions are executed by the processor, the processor is made to execute the instructions in claims 1 to 5 The method of any one.
A computer-readable storage medium, characterized in that a computer program or an instruction is stored in the computer-readable storage medium; when the computer program or the instruction is run on one or more processors, the The method of any one of claims 1 to 5.