What needs to be tested for the acceptance of the LED display project? _Shenzhen Full Color LED Display Manufacturer|Huaze Optoelectronics
What needs to be tested for the acceptance of LED display screens? Today, Huaze Optoelectronics will give you a brief introduction: At present, domestic LED display screens have been widely used in various industries, but because the core technology is in the hands of other countries, it is lost. The right to customize industry standards also makes the domestic LED display project appraisal 'unable to relyLet me share with you 6 inspection methods. 1. Product design. There are many types of full-color LED displays, including indoor and outdoor energy-saving, high-brightness, high-refresh and portable products, and various industries have different requirements for LED displays. Therefore, buyers should distinguish between the quality of LED displays and when choosing LED displays. , To gather their own needs, whether the manufacturer's LED display products can meet their needs to the greatest extent. 2. White balance effect. The white balance effect is one of the most important indicators of the LED display. In color science, pure white will only be displayed when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16. If the actual ratio is a little different, there will be a deviation of white balance. Generally, pay attention to whether the white is blue or yellow. Green phenomenon. The quality of the white balance is mainly determined by the control system of the LED display, and the lamp beads also have an impact on the color reproduction. 3. Brightness and viewing angle. The brightness of the indoor full-color screen must be above 800cd/m2, and the brightness of the outdoor full-color screen must be above 1500cd/m2 to ensure the normal operation of the display, otherwise the displayed image will not be clear because the brightness is too low. The brightness is mainly determined by the quality of the LED lamp beads. The size of the viewing angle directly determines the audience of the LED display, so the larger the better. The size of the viewing angle is mainly determined by the packaging method of the die. Fourth, the reducibility of colors. Color reproducibility refers to the reproducibility of the color of the LED display screen, that is, the color displayed on the LED display screen must be highly consistent with the color of the playback source, so as to ensure the realism of the image. 5. Flatness. The flatness, if it is too obvious, can be seen by the naked eye. The surface flatness of the LED display should be within ±1mm to ensure that the displayed image is not distorted, and local protrusions or recesses will cause a blind spot in the viewing angle of the display. The quality of flatness is mainly determined by the production process. 6. Material control. The selection of materials plays a decisive role in the quality of the LED display. Choose high-quality raw materials at the source to control the quality of the LED display. Therefore, it is the focus of investigation for buyers. 1. The high-end LED lamp represents Nichia Cree (chip packaging) and the mid-range Epistar Opto Lei Silan (chip). LED lights are related to the LED industry chain, especially the domestic packaging industry that involves more, the same Epistar Silan The quality of the LEDs produced by the chip due to the different packaging manufacturers is uneven. The representative of the LED lamp packaging tube of the medium and high products is EVERLIGHT (Taiwan) National Star Lehman. 2. Pin header (with simple horns): The pin header is the main component that connects the control system and the PCB board control circuit through the cable. The pin header with the horn is preferred to prevent the rework caused by the reverse insertion of the cable when installing the screen, but also It can effectively prevent the pin headers from being exposed to damage the screen and maintenance personnel. 3. LED display module mask and bottom shell: the main material is plastic. Imported high-quality materials, anti-deformation, strong environmental resistance. 4. Resistors, capacitors and other components: as the saying goes, there are no big or small things. Since the LED display is often turned on and off, the quality of the capacitor also affects the protection of the display screen when it is turned on and off. The resistance is the main control for the current of the display. Components, there are preferred brands of major manufacturers. 5. LED driver IC: Macroblock Technology, as a leading manufacturer of LED drivers in the world, has been ranked first in the field of LED display drivers for many years, and has achieved over 60% of domestic LED display drivers and over 50% of the global market share. 5024 is the choice for most mid-to-high-end LED display products. 6. Power socket (reinforced): The power socket is the main component that connects the power cord and the PCB board. Although it is not the main aspect that determines the quality of the LED display, its sturdiness, durability and conductivity also affect the display screen. The longevity and protection level. After the LED display project is completed, it must be tested strictly according to the requirements, and the problems will be found and solved early, so as not to bring unnecessary trouble to yourself in the future use.