Due to technical shortcomings, outdoor LED displays are prone to dead pixels. Generally, the dead-light rate of outdoor outdoor LED displays is generally 1 in 10,000 to 3 in 10,000, but for small-pitch LEDs, it is extremely difficult. The third bad light rate can hardly meet the needs of daily use. Take the small-pitch outdoor LED display of P2.5 specification as an example, there are 160,000 lamp beads per square meter; if the distance is increased to 1 mm, per square meter There are 1 million lamp beads. At this time, if the standard of "no more than 3 dead pixels" is used, the number of bad lights on the small-pitch outdoor LED display is uncountable; when the number of dead pixels on the large screen reaches 1 At millimeters, the viewing is extremely poor.
For indoor display devices, especially products that are positioned as display platforms for small and medium-sized conference rooms, audiences generally watch and use the screen at close range. Taking a typical conference display scene as an example, the screen is about 1.5 from the conference host and attendees. -5m.
