QFN Packaging Solves The Heat Dissipation Problem of LED Display
Currently, almost all LED display manufacturers face the problem of heat dissipation during PCB design, with the thermal effect of drivers disturbing the normal light emitting property of LED and further influencing the color uniformity of the overall display. This article will illustrate how headaches can [...]
LED luminous letter (or caption machine) adopts light emitting diode as lighting source. It is usually installed on the top of buildings or on wall surface in the shape of given letters or signs. LED luminous letter chooses high brightness LED chips and uses specific system to take control of the dynamic video of the [...]
1. Bad Color Rendering
Currently, a white LED produced from a blue LED covered with yellow phosphor generally has bad color rendering (below 80%), as the emitted light lacks red and does not restore this color correctly. But a TL tube or a compact fluorescent lamp may have color rendering indices from 80% to more than [...]