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はじめに
The LED module is the core component of the LED display, it consists of LED circuit board and shell, the internal arrangement and encapsulation of LED lamp beads according to certain rules, and supplemented by the necessary waterproof treatment. As the main body of LED displays, is an important factor affecting the performance and application effect of the whole display. With the accelerating development of LED display industry and the diversification of application scenarios, LED module plays an increasingly important role.
In this article, we will go through eight basic parameters of LED module to help you further understand the functions and features of LED modules.
LED display module color
It is the most basic parameter in LED module, and different colors are applied in different occasions. According to the type of color can be divided into three types: single-color, dual-color and full color.
Single-color LED module
Single-color module can only display one fixed color, power can work, suitable for simple instructions or monochrome display needs. It is usually presented in one of the colors such as red, green, orange, etc. It is commonly used for scrolling information display, such as traffic display and front door advertisement.
Dual-color LED module
The LED chip of a dual color module generally consists of red and green LED diodes. Combining red and green LEDs, it can display red, green and yellow colors and 65,536 colors in 256 levels of grayscale. Dual-color LED displays are mostly used for traffic signs.
Full color LED module
Red, green, and blue tri-color, 256-level grayscale full-color display that can show up to 16,777,216 colors. This LED module enables color control of each pixel point and is suitable for displaying images and video content. A special control system is required to achieve the full color effect.
LED display module brightness
When we mention the brightness parameter, we think of the high brightness, this parameter is a parameter that everyone is more concerned about. The luminous intensity and the light transmittance are both important index to measure the display effect, they are usually used together to determine the brightness of the LED module. The brightness value is generally the sum of their own LED beads light.
So when selecting LED module, you need to estimate the application scene to make decisions on the brightness needed. For instance, outdoor LED display needs higher brightness outdoor LED module, while relatively low brightness requirements for indoor applications.
LED module light-emitting angle
The LED lamp beads determine the light-emitting angle of the LED module, without special lenses, the light-emitting angle of the lamp beads is the light-emitting angle of the module. According to the application of various occasions, the angle of light emitted by different LED edge lighting is also different, wide-angle is suitable for a wide range of visual scenes, and narrow angle of light emitted by the LED edge light more suitable for long distance projection display. Different angles are designed for the products based on the size of the installation position and viewing distance.
LED module operating temperature
Temperature is one of the parameters of the LED module that directly affects the service life and stability of the LED module, as most LED modules work within the temperature range of -18°C~58°C. In extreme environments like high temperature or severe cold, additional measures, such as putting on air conditioning or exhaust fan, etc., are needed to ensure the normal work of the module.
Voltage of LED modules
Voltage is the key parameter that determines whether the LED module can work properly. Currently, 12V low voltage module is the most common choice. When connecting the power supply or control system, be sure to check whether the voltage value matches, so as to avoid damage to the module due to abnormal voltage.
Size of LED module
LED module size refers to the length and width and height of the size, is the design and installation of a reference index. The choice of reasonable module size is related to the overall splicing effect of the display, prevention, and construction difficulty and cost of the project. Common LED module size: 250x250mm, 192x192mm, 320x160mm, 320x320mm and so on. In addition, when splicing attention to the module is the edge alignment and connection, so that the whole LED display screen flatness and picture integrity.
Resolution of LED modules
Resolution is an important parameter to measure the display effect of LED module, that is, we often say the density of LED beads arranged on the module, usually expressed in dot pitch and number of dots. The higher the resolution, the more detailed the image display, but the higher the cost. Low resolution is less costly and less time consuming, but has limitations in terms of detail.
LED module waterproof rating
Waterproof grade is the core index of outdoor LED module, which directly determines whether it can run stably for a long time. Usually, IP65 is the minimum requirement for all-open-air application scenarios. This means that the module can effectively prevent dust and resist low-pressure water spray in all directions. When choosing an outdoor module, the protection level needs to be evaluated according to the actual use environment.
結論
Understanding and mastering the above eight core parameters is the basis for the correct selection of LED modules. Whether single-color or full-color modules, have their unique application scenarios. Brightness, light-emitting angle, operating temperature and other parameters, further affecting the applicability of the module and the display effect. Especially in the outdoor environment, waterproof grade and voltage selection need extra attention. Combined with the actual needs, choose the right LED module, in order to realize the ideal display effect, help all kinds of scenes wonderful presentation.