With the continuous innovation and improvement of LED technology, more and more outdoor advertising screens are changing from large to small, and from small to clear. In the LED display industry, outdoor high-definition outdoor advertising screens are surface-mounted products. Outdoor surface-mounted LED displays use high-quality light-emitting chips as the core material, and high-quality driver ICs are full-color LED displays. High density, viewing angle, stability, color uniformity, color saturation, fineness of image edges, smooth video effects, etc. have given full play to the ultimate advantages of outdoor led advertising screens. Shenzhen Xinyiguang uses lamp beads as a medium to analyze several surface-mounted lamp beads that are commonly used outdoors in the market.
▲ Outdoor surface mount glue filling process diagram
The first lamp bead is SMD2828, and the models it can use in the led display are outdoor surface mount P5, P6, P6.25 and other outdoor models. The outdoor products are not limited to these three models. There are also outdoor rental screens P6.67 and floor tile screens P7.8125 and P8.928, which are representative products for outdoor applications and stage applications. The appearance size of SMD2828 is 3.0×3.0×2.4mm, and the special waterproof structure design effectively improves the moisture-proof function. In the waterproof glue filling process, special silica gel for outdoor surface stickers is used. The thickness of the glue is 1.5mm, which effectively isolates rainwater from eroding the PCB board, preventing adverse factors such as short circuits.
The second type is SMD3535. The size of the 3535 lamp bead is relatively larger than that of the 2828, and the appearance size is 3.5×3.5×2.8mm in thickness. Commonly used outdoor displays include outdoor surface-mounted P8 full-color display and outdoor P10 full-color display. Because of the larger lamp beads, the application in the outdoor high-definition field is much smaller than that of 2828. The 3535 adopts the design of white inside and black outside, which significantly improves the contrast effect. The waterproof glue filling process also uses special silicone for outdoor surface stickers, and the thickness of the glue is 1.5mm.
▲ Glue-filled module diagram
Outdoor surface-mounted P8led display and P10led display have a relatively large distance between them. Using 3535 lamp beads and high-foot lamp beads, a normal glue filling machine can solve the problem. However, P5, P6, and P6.25 have very high precision requirements in the process. If you do not master the glue filling technology well, it will affect the appearance and consistency of the entire screen. Shenzhen Xinyiguang has done a lot of work in this regard, completely solving the problem of blurred screen caused by the outdoor surface mount glue filling process.
Post time: May-20-2014
