3528LED lamp beads (light emitting diodes) are widely used in our lives. Today we will talk about the application of 3528LED lamp beads on LED displays. First of all, you need to know the size, material and luminous color of the 3528 SMD LED lamp bead. The 3528 LED lamp bead is made of high-definition environmentally friendly silica gel and wafer chip packaging. Its regular size is 3.2*2.8*1.9mm. White, red, yellow, green, orange, blue, purple, pink and other colors can be customized, and the application fields are quite wide, such as various home appliances, digital, communications, automotive electronics, lighting, electronic toys, electronic clocks, transportation Instructions, medical beauty equipment, electronic teaching equipment, urban lighting, etc., and of course the LED display that we are going to talk about today.

After a brief introduction, let's get to the point, the impact of 3528 SMD LED lamp beads on the LED display. The viewing angle of the LED display depends on the viewing angle of the LED lamp beads. At present, most outdoor displays use oval LEDs with a horizontal viewing angle of 100° and a vertical viewing angle of 50°, while indoor displays use 120° horizontal and vertical viewing angles. SMD LED. Because of its uniqueness, the display screen on the highway generally adopts a ring LED with a viewing angle of 30°. Some displays on tall buildings have higher vertical viewing angles. The viewing angle and brightness are different from each other, and a large viewing angle will definitely reduce the brightness. The choice of perspective must be based on the actual role.

LED brightness is a key factor affecting the brightness of the display. The higher the brightness of the LED, the greater the capacity of the applied AC power, which is beneficial to saving power consumption and maintaining the stability of the LED. LEDs have different angle values. When the brightness of the integrated IC is fixed, the smaller the angle, the brighter the LED, but the smaller the viewing angle of the display. Generally, one hundred degrees of LED should be selected to ensure sufficient viewing angle of the display. For displays with different intervals and different viewing angles, a balance point should be found in brightness, angle and price. Because the brilliant display is composed of more than ten thousand or even hundreds of thousands of pixels composed of three types of red, green and blue LEDs, the failure of any color LED will harm the overall visual impact of the display. Generally speaking, according to the work experience in the field, the failure rate after the LED display is gradually installed to embrittlement three days before delivery should not be greater than 3/10,000 (refers to the invalidity caused by the LED lamp bead itself).

LED is a semiconductor material device, which is sensitive to electrostatic induction, which is very easy to cause static electricity to be ineffective. Therefore, the anti-static ability of esd is particularly important for the service life of the display screen. Generally speaking, the electrostatic discharge strategy of LED detection scrap working voltage should not be less than 2000V. The basic theoretical service life of the LED device is 100,000 hours, which is much higher than the service life of other components of the LED display. Therefore, only the quality of the LED device needs to be guaranteed. The current amount during operation is suitable. The PCB heat dissipation design scheme is effective. The process flow is meticulous and meticulous, and the LED device will be one of the most durable components in the entire machinery of the display. LED devices account for 70% of the price of LED displays, so LED devices can determine the quality of LED displays. In my country, it is a powerful country in the manufacture of LED devices, and it is also a concentrated place for the production of LED displays. The high-tech regulation of LED display is the future development trend. The high-quality regulation of LED display is not only related to the direction of LED display manufacturers, but also involves the development trend of LED display device manufacturers. From the strict control of LED devices, to promote the change of my country from a large LED display manufacturing country to a powerful LED display manufacturing country.

After a long-term operation of the LED display, the brightness reduction and the inconsistency of the color tone of the display will occur, mainly due to the brightness attenuation coefficient of the LED device. The loss of LED brightness will cause the display screen brightness to decrease. The inconsistency of the intensity of the red, green and blue LED brightness attenuation coefficient will lead to the inconsistency of the color tone of the LED display, which is often referred to as the situation of the display screen. High-quality LED devices can effectively manipulate the intensity of the luminance attenuation coefficient. According to the 20mA specification for 1000 hours of fresh-keeping lighting, the attenuation coefficient of bright red should be greater than 2%, and the attenuation coefficient of blue and emerald green should be less than 10%, so blue and emerald green LEDs do not need to use 20mA current as much as possible in the display design scheme. It is best to use only 70% to 80% of the rated voltage. In addition to the characteristics of the attenuation coefficient, which are related to the characteristics of the red, green and blue LEDs, the amount of applied current, the heat dissipation design scheme of the PCB board, and the application temperature of the display screen will all cause harm to the attenuation coefficient.