TELKOMNIKA Telecommunication, Computing, Electronics and Control
TiO2/silicone encapsulation film for achieving optical performance improvement of chip-on-board packaging LEDs
Dublin Core
Title
TELKOMNIKA Telecommunication, Computing, Electronics and Control
TiO2/silicone encapsulation film for achieving optical performance improvement of chip-on-board packaging LEDs
TiO2/silicone encapsulation film for achieving optical performance improvement of chip-on-board packaging LEDs
Subject
Color uniformity
Luminous flux
Mie-scattering theory
TiO2
Luminous flux
Mie-scattering theory
TiO2
Description
TiO2 nanoparticle and silicon composite has powerful effect of scattering, thus
it is famous in enhancing the scattered light in light-emitting diode (LED)
packages. To accomplish higher lighting performance in LED devices, a thin
encapsulation layer of TiO2 with high concentration and silicon glue is
introduced to complement the main encapsulation one. After conducting
experiments, the results present that in the case of the main encapsulation
including only silicone, the light extraction efficiency (LEE) of COB LEDs
increases to 65%. On the other hand, when there is the additional layer of TiO2
and silicone, the improvement of LEE depends on the concentration of TiO2.
As this nanoparticle concentration decreases from 0.12 to 0.035 g/cm3
, the
LEE can be enhanced from 6% to 24%. Moreover, at the average correlated
color temperature (CCT) of approximately 8500 K, the layer of TiO2/silicone
composite can help to accomplish the reduction of the angular correlated color
temperature (CCT) deviation, from 900 to 470 K, within −90° to 90° viewing
angle range.
it is famous in enhancing the scattered light in light-emitting diode (LED)
packages. To accomplish higher lighting performance in LED devices, a thin
encapsulation layer of TiO2 with high concentration and silicon glue is
introduced to complement the main encapsulation one. After conducting
experiments, the results present that in the case of the main encapsulation
including only silicone, the light extraction efficiency (LEE) of COB LEDs
increases to 65%. On the other hand, when there is the additional layer of TiO2
and silicone, the improvement of LEE depends on the concentration of TiO2.
As this nanoparticle concentration decreases from 0.12 to 0.035 g/cm3
, the
LEE can be enhanced from 6% to 24%. Moreover, at the average correlated
color temperature (CCT) of approximately 8500 K, the layer of TiO2/silicone
composite can help to accomplish the reduction of the angular correlated color
temperature (CCT) deviation, from 900 to 470 K, within −90° to 90° viewing
angle range.
Creator
My Hanh Nguyen Thi, Phung Ton That
Source
http://journal.uad.ac.id/index.php/TELKOMNIKA
Date
Oct 7, 2020
Contributor
peri irawan
Format
pdf
Language
english
Type
text
Files
Collection
Citation
My Hanh Nguyen Thi, Phung Ton That, “TELKOMNIKA Telecommunication, Computing, Electronics and Control
TiO2/silicone encapsulation film for achieving optical performance improvement of chip-on-board packaging LEDs,” Repository Horizon University Indonesia, accessed March 13, 2025, https://repository.horizon.ac.id/items/show/3701.
TiO2/silicone encapsulation film for achieving optical performance improvement of chip-on-board packaging LEDs,” Repository Horizon University Indonesia, accessed March 13, 2025, https://repository.horizon.ac.id/items/show/3701.