Light-Emitting Diode (LED) Devices Comprising Nanocrystals

Abstract

The present invention provides light-emitting diode (LED) devices comprises compositions and containers of hermetically sealed luminescent nanocrystals. The present invention also provides displays comprising the LED devices. Suitably, the LED devices are white light LED devices.

What is claimed is: 
     
         1 . A display system comprising:
 a. a display;   b. a plurality of light emitting diodes (LEDs);   c. a light guide optically coupled to the LEDs; and   d. a composition comprising a plurality of phosphors placed between the display and the light guide.   
     
     
         2 . The display system of  claim 1 , wherein the phosphors are luminescent nanocrystals. 
     
     
         3 . The display system of  claim 2 , wherein the luminescent nanocrystals comprise CdSe or ZnS 
     
     
         4 . The display system of  claim 2 , wherein the luminescent nanocrystals are core/shell luminescent nanocrystals comprising CdSe/ZnS, InP/ZnS, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS. 
     
     
         5 . The display system of  claim 1 , wherein the phosphors are YAG phosphors. 
     
     
         6 . The display system of  claim 1 , wherein the LEDs are blue LEDs. 
     
     
         7 . The display system of  claim 1 , wherein the light guide further comprises one or more features that aid in the transmission of light from the light guide. 
     
     
         8 . The display system of  claim 1 , wherein the composition is a film. 
     
     
         9 . The display system of  claim 8 , wherein the film comprises a polymeric matrix in which the phosphors are dispersed. 
     
     
         10 . The display system of  claim 9 , wherein the polymeric matrix comprising a first polymeric material that is an epoxy or a polycarbonate and a second polymeric material that is an aminosilicone. 
     
     
         11 . The display system of  claim 1 , wherein the light guide is optically coupled to the LEDs with glue. 
     
     
         12 . The display system of  claim 1 , wherein the light guide is optically coupled to the LEDs with tape. 
     
     
         13 . The display system of  claim 1 , wherein the light guide is optically coupled to the LEDs with mechanical alignment. 
     
     
         14 . The display system of  claim 1 , wherein the light guide is physically coupled to the LEDs. 
     
     
         15 . A display system comprising:
 a. a display;   b. a plurality of blue light emitting diodes (LEDs);   c. a light guide optically coupled to the LEDs; and   d. a composition comprising a plurality of luminescent nanocrystals placed between the display and the light guide.   
     
     
         16 . The display system of  claim 15 , wherein the luminescent nanocrystals comprise CdSe or ZnS 
     
     
         17 . The display system of  claim 15 , wherein the luminescent nanocrystals are core/shell luminescent nanocrystals comprising CdSe/ZnS, InP/ZnS, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS. 
     
     
         18 . The display system of  claim 15 , wherein the light guide further comprises one or more features that aid in the transmission of light from the light guide. 
     
     
         19 . The display system of  claim 15 , wherein the composition is a film. 
     
     
         20 . The display system of  claim 19 , wherein the film comprises a polymeric matrix in which the luminescent nanocrystals are dispersed. 
     
     
         21 . The display system of  claim 20 , wherein the polymeric matrix comprising a first polymeric material that is an epoxy or a polycarbonate and a second polymeric material that is an aminosilicone. 
     
     
         22 . The display system of  claim 15 , wherein the light guide is optically coupled to the LEDs by mechanical alignment. 
     
     
         23 . The display system of  claim 15 , wherein the light guide is optically coupled to the LEDs with tape. 
     
     
         24 . The display system of  claim 15 , wherein the light guide is optically coupled to the LEDs with mechanical alignment. 
     
     
         25 . The display system of  claim 15 , wherein the light guide is optically coupled to the LEDs with glue.