SMD patch and LED lamp beads belong to the LED light source. The angle of the LED lamp beads is very small, the light is relatively concentrated, the range is long, and the irradiation range is small, while the angle of the LED patch is very large, the light is scattered, and the light is scattered. The range is wide, but the range is short. The LED lamp bead uses discharge light, while the SMD LED uses cold light.
SMD LEDs are also a kind of LED lamp beads. Common LEDs have two legs and four legs. Some do not have pin-shaped legs. They are directly welded to the copper foil of the circuit. The method of use is the same. When choosing LED lamp beads, the color temperature, color rendering index, luminous efficiency, and luminous decay need to be considered.
