The　multiple　color-matching　schemes　that　could　improve　the　color　rendering　index　for　phosphor-free　white　LEDs　are　discussed.　Then　we　review　a　few　of　the　recent　research　directions　for　phosphor-free　white　LEDs,　which　include　the　development　of　monolithic　GaN-based　white　LEDs　and　hybrid　integrated　GaN-based　and　AlGaInP-based　white　LEDs.　These　development　paths　will　pave　the　way　toward　commercial　application　of　phosphor-free　white　LEDs　in　the　coming　years.