Led device having blue photoluminescent material and red/green quantum dots

A light-emitting device comprising:

• a plurality of light-emitting diodes;
• a first cured composition in contact with a surface through which radiation in a first wavelength band in the UV light range is emitted from a first subset of the light-emitting diodes of the plurality of the light-emitting diodes, wherein the first cured composition includes
• a blue photoluminescent material selected to emit blue light in response to absorption of the radiation in the first wavelength band from each of the light-emitting diodes in the first subset of the light-emitting diodes of the plurality of the light-emitting diodes, wherein the blue photoluminescent material is an organic, organometallic, or polymeric material, and
• a first photopolymer, wherein the organic, organometallic, or polymeric material is embedded in the first photopolymer;
• and
• a second cured composition in contact with a surface through which radiation in a second wavelength band in the UV or visible light range is emitted from a second subset of light-emitting diodes of the plurality of the light-emitting diodes, wherein the second cured composition includes
• first quantum dots selected to emit red or green light in response to absorption of the radiation in the second wavelength band from each of the light-emitting diodes of the second subset of light-emitting diodes of the plurality of the light-emitting diodes;
• and
• a second photopolymer, wherein the first quantum dots are embedded in the second photopolymer.

A method of fabricating a multi-color display, comprising:

• dispensing a first photo-curable fluid over a display having a backplane and an array of light emitting diodes electrically integrated with backplane circuitry of the backplane, the first photo-curable fluid including a blue photoluminescent material selected to absorb ultraviolet light, one or more first monomers, and a first photoinitiator that initiates polymerization of the one or more first monomers in response to absorption of the ultraviolet light;
• activating a first plurality of light emitting diodes in the array of light emitting diodes to illuminate and cure the first photo-curable fluid to form a first color conversion layer over each of the first plurality of light emitting diodes to convert light from the first plurality of light emitting diodes to blue light, the first color conversion layer having the blue photoluminescent material embedded in a first polymer matrix;
• removing an uncured remainder of the first photo-curable fluid;
• thereafter dispensing a second photo-curable fluid over the display, the second photo-curable fluid including a nanomaterial selected to emit red or green light in response to absorption of the ultraviolet light, one or more second monomers, and a second photoinitiator that initiates polymerization of the one or more second monomers in response to absorption of the ultraviolet light;
• activating a second plurality of light emitting diodes in the array of light emitting diodes to illuminate and cure the second photo-curable fluid to form a second color conversion layer over each of the second plurality of light emitting diodes to convert light from the second plurality of light emitting diodes to light of a different second color, the second color conversion layer having the nanostructures embedded in a second polymer matrix;
• and
• removing an uncured remainder of the second photo-curable fluid.