1. LED light bead is the most used component of micro small pitch LED electronic screen walls, take P1.6 micro spacing LED electronic screens, for example, use up to 360000 pieces per square meter.
2. The performance indexes of LED beads directly affect the performance of micro spacing LED electronic screen and the audience’s evaluation of the display screen.
3. Led beads account for the largest proportion in the overall cost of micro spacing LED electronic screen, up to 30% ~ 70%.
3、 Influence of LED beads on micro spacing LED electronic screen
1. The brightness of micro spacing LED electronic screen depends on the current flowing into led beads and the brightness performance of LED beads. The greater the use current of LED lamp beads, the greater the luminous brightness of micro spacing LED electronic screen. High quality LED lamp beads have good light conversion rate, and very small use current can emit high brightness light, which is good for saving power consumption and maintaining the stability of micro spacing LED electronic screen.
2. Impact on runaway rate because the micro spacing LED electronic screen is composed of tens of thousands or even hundreds of thousands of pixels composed of red, green and blue LEDs, the failure of any color LED will affect the overall visual effect of the electronic screen. Generally speaking, according to industry experience, the failure rate of the LED electronic screen 72 hours before shipment shall not be higher than 3 / 10000 (referring to the failure caused by the LED beads themselves). The failure efficiency of high-quality LED beads is very low. The loss of control rate of the whole screen of the micro pitch LED electronic screen with high-quality LED beads can be controlled below 1 / 100000.
3. Impact on service life the theoretical life of LED lamp beads is 100000 hours, which is much longer than the working life of other components of micro spacing LED electronic screen. Therefore, as long as the quality of LED lamp beads is guaranteed, the working current is appropriate, the PCB heat dissipation design is reasonable and the production process of electronic screen is rigorous, LED lamp beads will be one of the most durable components in the whole electronic screen, The micro spacing LED electronic screen with high-quality LED light beads has a service life of 100000 hours and an average time between failures (MTBF) of 50000 hours.
4. The angle of view of micro pitch LED electronic screen depends on the angle of view of LED beads. At present, most indoor electronic screens use LED beads with ultra wide horizontal / vertical viewing angle, so that the horizontal / vertical viewing angle of micro spacing LED electronic screen can reach 160 degrees.
5. The size of LED beads affects the pixel spacing of LED electronic screen and the resolution of the whole screen. Smd0707 led beads are mainly used in P1 LED electronic screen with micro spacing below 5. Smd1010 led beads are mainly used for P1 6、P1. 9、P2. 0 micro pitch LED electronic screen, smd2121 led beads are mainly used for P2 5. P3 micro pitch LED electronic screen. On the premise of constant point spacing, the LED bead size increases, which can increase the display area and reduce the sense of particles. However, due to the reduction of black area, the contrast will be reduced; On the contrary, the LED bead size decreases, the display area decreases, the particle sense increases, the black area increases, and the contrast increases.
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