GE Lighting has licensed its patented PFS (potassium-fluorosilicate)-based phosphor to Taiwan-based LED packaging firms Everlight Electronics and Lextar Electronics, according to a Digitimes article. PFS (potassium-fluorosilicate)-based phosphor is known as a red phosphor. PFS can improve red color rendering known as R9.
A conventional blue converted white LED uses a yellow phosphor. However, this produces a white light that has a lower red color rendering index than sunlight. The addition of a PFS phosphor can significantly improve the red color rendering.
Everlight and Lextar reportedly intend to use the red phosphor to produce backlighting units for high-end LED displays. According to the article, Everlight and Lextar plan to ship LED backlighting packaging using PFS-based phosphor technology in the third quarter of 2015.