Author
Özaydın, M. C., Arık, Mehmet
Publication Date
2017
Publication Place
-
IEEE
Subject
LED TV, Thermal management, Junction temperature, Electronics cooling, CFD model
Type
Document
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
978-1-5090-2994-5
Record ID
55584071-ebeb-43c1-b837-aedf5d0e58e3
Library Location
Mechanical Engineering
Date
2017
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
The market trend of global TV industry is nourished due to recent advancements in optical component technology and user expectations. Due to strong market requirement for slimmer mechanical designs (<;10mm) and increased luminance (700nit), higher color gamut (DCI: 120%); Decreasing Backlight Unit (BLU) thickness while increasing the image quality resulted in a factor of 3 increase in volumetric heat generation rates. Heat generated by LED packages is the primary cause of defects and deformations in the LED TV optical components. TV manufacturers have then faced challenging thermal design issues. Therefore, the thermal design for a BLU must be well understood to develop a novel optic-thermal design. In this study, an approach for the thermal management of an LED TV system is developed to determine local temperature distribution over BLU and electronics. A hybrid analytical and CFD modeling approach followed by an experimental validation has been developed. First, an idealized one dimensional resistance network is created. Then, 3D CFD models of the LED TV are developed by utilizing commercial software. CFD results are then validated with the experimental data performed in a controlled thermal chamber. The test data is compared with CFD findings. A variation of 6.3% is found between numerical and experimental findings.
DOI
10.1109/ITHERM.2017.7992600
