US2015109814A1PendingUtilityA1

Light emitting diode (led) devices

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Assignee: NANOSYS INCPriority: Oct 17, 2013Filed: Oct 16, 2014Published: Apr 23, 2015
Est. expiryOct 17, 2033(~7.2 yrs left)· nominal 20-yr term from priority
Inventors:Jian ChenRobert S. DubrowSteven W. GenslerJason HartloveErnest LeeRobert Wilson
G02B 6/0073G02F 1/133615G02B 6/005H10H 20/8512G02B 6/0053F21K 2/00G02B 6/0055G02B 6/0051G02F 1/133614
56
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Claims

Abstract

Disclosed teem are display systems comprising light-emitting, diodes (LEDs), suitably blue light LEDs, which demonstrate increased optical power output. In embodiments, the display systems include compositions comprising phosphors, including luminescent nanocrystals.

Claims

exact text as granted — not AI-modified
What is claim is: 
     
         1 . A display system, comprising:
 a) one or more blue light emitting diode(s) (LED);   b) a light guide plate, optically coupled to the blue LED;   c) a display; and   d) a composition comprising a plurality of phosphors, the composition oriented between the light guide plate and the display,   
       wherein the display system exhibits increased optical power output as compared to a display system where the light guide plate is not optically coupled to the blue LED. 
     
     
         2 . The display system of  claim 1 , wherein the light guide plate is optically coupled to the blue LED with, a tape or an adhesive. 
     
     
         3 . The display system of  claim 1 , wherein the light guide plate is optically coupled to the blue LED via an ecapsulant protruding from the LED. 
     
     
         4 . The display system of  claim 1 , wherein, the phosphors are YAG phosphors, silicate phosphors, garnet phosphors, aluminate phosphors, nitride phosphors, NYAG phosphors, SiAlON phosphors and CASN phosphors. 
     
     
         5 . The display system of  claim 1 , wherein the phosphors are luminescent nanocrystals. 
     
     
         6 . The display system of  claim 5 , wherein the luminescent nanocrystals comprise CdSe or ZnS. 
     
     
         7 . The display system of  claim 5 , wherein the luminescent nanocrystals comprise CdSe/ZnS, InP/ZnS, InP/ZnSe, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS. 
     
     
         8 . The displays system of  claim 1 , wherein the composition is a film. 
     
     
         9 . The display system of  claim 1 , wherein the display is a liquid crystal module. 
     
     
         10 . The display system of  claim 1 , wherein the system further comprises one or more of a diffuser, one or more brightness enhancement films (BEFs) and a reflector. 
     
     
         11 . The display system of  claim 1 , wherein the display system exhibits at least a 10% increase in optical power output as compared to a display system where the light guide plate is not optically coupled to the blue LED. 
     
     
         12 . A display system, comprising:
 a) one or more blue light emitting diode(s) (LED);   b) a light guide plate, optically coupled to the blue LED;   c) a display; and   d) a film comprising a plurality of phosphors, the composition oriented between the light guide plate and die display,   
       wherein the display system exhibits at least a 10% increase In optical power output as compared to a display system where the light guide, plate is not optically coupled to the blue LED. 
     
     
         13 . The display system of  claim 12 , wherein the light guide plate is optically coupled to the blue LED with a tape or an adhesive. 
     
     
         14 . The display system of  claim 12 , wherein the light guide plate is optically coupled to the blue LED via an encapsulant protruding from the LED. 
     
     
         15 . The display system of  claim 12 , wherein the phosphors are YAG phosphors, silicate phosphors, garnet phosphors, aluminate phosphors, nitride phosphors, NYAG phosphors, SiAlON phosphors and CASN phosphors. 
     
     
         16 . The display system of  claim 12 , wherein the phosphors are luminescent nanocrystals. 
     
     
         17 . The display system of  claim 16 , wherein the luminescent nanocrystals comprise CdSe or ZnS. 
     
     
         18 . The display system of  claim 16 , wherein the luminescent nanocrystals comprise CdSe/ZnS, InP/ZnS, InP/ZnSe, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS. 
     
     
         19 . The displays system of  claim 12 , wherein the film is a polymeric film. 
     
     
         20 . The display system of  claim 12 , wherein the display is a liquid crystal module. 
     
     
         21 . The display system of  claim 12 , wherein the system further comprises one or more of a diffuser, one or more brightness enhancement films (BEFs) and a reflector. 
     
     
         22 . A display system, comprising:
 a) one or more blue light emitting diode(s) (LED);   b) a light guide plate, optically coupled to the blue LED;   c) a polymeric film comprising a plurality of phosphors, the polymeric film oriented above the light guide plate;   d) one or more brightness enhancement films (BEFs) oriented above the polymeric film;   e) a top diffuser oriented above the BEFs; and   f) a liquid crystal module oriented above the top diffuser,   
       wherein the display system exhibits at least a 10% increase in optical power output as compared to a display system where the light guide plate is not optically coupled to the blue LED. 
     
     
         23 . The display system of  claim 22 , wherein the light pride plate is optically coupled to the blue LED with a tape or an adhesive. 
     
     
         24 . The display system of  claim 22 , wherein the light guide plate is optically coupled, to the blue LED via an encapsulant protruding from the LED. 
     
     
         25 . The display system of  claim 22 , wherein the phosphors are YAG phosphors, silicate phosphors, garnet phosphors, aluminate phosphors, nitride phosphors, NYAG phosphors, SiAlGN phosphors and CASN phosphors. 
     
     
         26 . The display system of  claim 22 , wherein the phosphors are luminescent nanocrystals. 
     
     
         27 . The display system of  claim 26 , wherein the luminescent nanocrystals comprise CdSe or ZnS. 
     
     
         28 . The display system of  claim 26 , wherein the luminescent nanocrystals comprise CdSe/ZnS, InP/ZnS, InP/ZnSe, PbSe/PbS, CdSe/CdS, CdTe/CdS or CdTe/ZnS. 
     
     
         29 . The display system of  claim 22 , wherein the system further comprises a reflector oriented below the light guide plate. 
     
     
         30 . A method of increasing the optical power output of a blue LED in a display system, comprising optically coupling the blue LED to a light guide plate of the display system. 
     
     
         31 . The method of  claim 30 , wherein the optical coupling comprises coupling the blue LED to the light guide plate with tape or an adhesive. 
     
     
         32 . The method of  claim 30 , wherein the light guide plate is optically coupled to the blue LED via an encapsulant protruding from the LED. 
     
     
         33 . The method of  claim 30 , wherein the method Increases the optical power output of the blue LED by at least 10% as compared to a display system that does not comprise the blue LED optically coupled to the light guide.

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