No, UV LEDs are far too costly, fragile and unpolished for this.

Remember how BlueRay still has so many problems because they can not produce UV LEDs to sufficient quantities ?

In fact, many white LEDs use BLUE LED as a foundation, covered with small amount of phosphorus.

Phosphorus then converts some part of incoming blue light to higher wawelentgths and the result is more or less "white"...

...from previous meager 40.something percents to 40.8 current percent.

Scary stuff, man...