Research on gallium nitride, a material that showed promise for blue LEDs, began in the late 1960s at the Radio Corporation of America (RCA), which wanted to use LEDs to create flat-panel televisions.

• 对于氮化镓的研究由美国无线电公司（RCA）于20世纪60年代开始，他们想利用LED做平面电视机，这种材料给蓝色LED带来生机。