Development of a computational modeling and experimental validation approach for KSF LED packages in a 65” ultra thin LED TV system

Name: Development of a computational modeling and experimental validation approach for KSF LED packages in a 65” ultra thin LED TV system
Author: Elibol, M., Özaydın, M. Ç., Arık, Mehmet

İsim	Development of a computational modeling and experimental validation approach for KSF LED packages in a 65” ultra thin LED TV system
Yazar	Elibol, M., Özaydın, M. Ç., Arık, Mehmet
Basım Tarihi:	2018-07-24
Basım Yeri	- IEEE
Konu	LED, Chip scale, Thermal management, Junction temperature, CFD model, Analytical model
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-1-5386-1272-9
Kayıt Numarası	7f7c3a03-52a7-4aa1-b214-bf747811f5a7
Lokasyon	Mechanical Engineering
Tarih	2018-07-24
Notlar	Vestel
Örnek Metin	The customer expectations in global TV market have changed over the last decade significantly towards a thinner with a higher brightness and a wider color gamut (WCG) TV products. These requirements led to a drastic increase in the power consumption and constrained mechanical design affecting the optical components and reducing the volume for thermal management. The KSF (K2SiF6:Mn 4+ ) LED is one of the best solutions to reach a higher color gamut (gamut > 90% in CIE 1976). However, the brightness of a typical KSF LEDs is about 15% lower than the conventional LEDs. KSF LED is also a thermally sensitive chemical compound but it enhances the color gamut of a TV system. Therefore, the determination of the best suitable LEDs for ultra thin TVs (thickness <; 7.9 mm) is critical since they are the main heat source consuming over 70% of total TV power consumption. Identifying thermally sensitive optical and mechanical components is one of the most essential steps of combined thermal and optical designs in an LED TV. At the same time, it offers significant advantages in terms of cost and time. Design and implementation of LED light engines (i.e. LED bars) is critical to reach performance goals of a high-end TV system. In this study, various LED bars consisting of KSF LED arrays and KSF chip scale packages (CSP) LED arrays have been studied both theoretically and experimentally. Modeling is started with analytical models (1D resistance network) and expanded to CFD analysis providing more accurate results capturing 3D heat transfer behavior. CFD simulations have been performed with a commercial CFD package (ICEPAK), and an experimental validation study has been performed to understand the thermal and the optical performance comparing different type of KSF LEDs in a TV system.
DOI	10.1109/ITHERM.2018.8419548

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Development of a computational modeling and experimental validation approach for KSF LED packages in a 65” ultra thin LED TV system

Yazar Elibol, M., Özaydın, M. Ç., Arık, Mehmet

Basım Tarihi 2018-07-24

Basım Yeri - IEEE

Konu LED, Chip scale, Thermal management, Junction temperature, CFD model, Analytical model

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-1-5386-1272-9

Kayıt Numarası 7f7c3a03-52a7-4aa1-b214-bf747811f5a7

Lokasyon Mechanical Engineering

Tarih 2018-07-24

Notlar Vestel

Örnek Metin The customer expectations in global TV market have changed over the last decade significantly towards a thinner with a higher brightness and a wider color gamut (WCG) TV products. These requirements led to a drastic increase in the power consumption and constrained mechanical design affecting the optical components and reducing the volume for thermal management. The KSF (K2SiF6:Mn 4+ ) LED is one of the best solutions to reach a higher color gamut (gamut > 90% in CIE 1976). However, the brightness of a typical KSF LEDs is about 15% lower than the conventional LEDs. KSF LED is also a thermally sensitive chemical compound but it enhances the color gamut of a TV system. Therefore, the determination of the best suitable LEDs for ultra thin TVs (thickness <; 7.9 mm) is critical since they are the main heat source consuming over 70% of total TV power consumption. Identifying thermally sensitive optical and mechanical components is one of the most essential steps of combined thermal and optical designs in an LED TV. At the same time, it offers significant advantages in terms of cost and time. Design and implementation of LED light engines (i.e. LED bars) is critical to reach performance goals of a high-end TV system. In this study, various LED bars consisting of KSF LED arrays and KSF chip scale packages (CSP) LED arrays have been studied both theoretically and experimentally. Modeling is started with analytical models (1D resistance network) and expanded to CFD analysis providing more accurate results capturing 3D heat transfer behavior. CFD simulations have been performed with a commercial CFD package (ICEPAK), and an experimental validation study has been performed to understand the thermal and the optical performance comparing different type of KSF LEDs in a TV system.

DOI 10.1109/ITHERM.2018.8419548