LIGHT EMITTING DIODE (LED) DEVICES
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.
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.