The total available market size for high color gamut in display applications including TVs, smart phones, and tablets is rapidly growing and expected to exceed $1 billion by 2020. It is highly desirable to use quantum dots (QD), with narrow emission line widths, and narrow band red phosphors (e.g., SLA) materials to achieve high color gamut. An on-chip converter application is preferred over remote configurations because this provides lower cost and lower complexity for LED use in all sizes of displays. We discuss development of on-chip QD LEDs and narrow band phosphor LED solutions for display applications.