Color Variation Reduction of GaN-Based White Light-Emitting Diodes Via Peak-Wavelength Stabilization

Chen, Huan-Ting; Tan, Siew‐Chong; Hui, S. Y. Ron

doi:10.1109/tpel.2013.2281812

Cited by 42 publications

(25 citation statements)

References 18 publications

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“…Since the peak wavelength shift occurs in opposite directions under the influences of current and junction temperature, this study demonstrated that, for a given thermal design, the reduction in the CCT variation during light intensity change can be made with a combined adjustment of the current level and its duty cycle over the dimming operation [71]. An interesting modeling technique for LED arrays comprising nonidentical LED devices was proposed in [72].…”

Section: State Of the Art Of Solid-state Device Modelingmentioning

confidence: 91%

Solid-State Lighting: A Concise Review of the State of the Art on LED and OLED Modeling

Bender

Marchesan

Alonso

2015

EEE Ind. Electron. Mag.

106

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Section: State Of the Art Of Solid-state Device Modelingmentioning

confidence: 91%

Solid-State Lighting: A Concise Review of the State of the Art on LED and OLED Modeling

Bender

Marchesan

Alonso

2015

EEE Ind. Electron. Mag.

106

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“…Color control in RGB LED systems is a multidisciplinary subject involving electric power, circuit topology, thermal management, and optical performance [1], [2]. The RGB LED systems also face thermal challenges because of their usual requirements for high compactness [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Precise Color Control of Red-Green-Blue Light-Emitting Diode Systems

Chen

Tan

Lee

et al. 2017

IEEE Trans. Power Electron.

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The complex nature and differences of the luminous and thermal characteristics of red, green and blue (RGB) light-emitting diodes (LEDs) make precise color control of RGB LED systems a great technological challenge. This paper presents a nonlinear model that includes coupling effects among LED devices for predicting color in RGB LED systems. A control method is included to demonstrate that this model can be used for precise color control. The proposed model and control method have been successfully evaluated in practical tests. The measurements agree well with model predictions. They form a new design tool for precise color control of RGB LED systems. Index Terms-Lighting system, photo-electro-thermal (PET), Red-Green-Blue (RGB) light-emitting diodes (LED) system, Color control.I.

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“…For example, models of luminous flux, which decreases with junction temperature, were proposed in [3], [4]. The variation of peak wavelength with junction temperature was studied, and the sensitive factor between peak wavelength and junction temperature was identified in [5], [6]. The relationship between chromaticity coordinates and junction temperature was determined in [7], [8].…”

Section: Introductionmentioning

confidence: 99%

An Estimation Method for the Efficiency of Light-Emitting Diode (LED) Devices

Xue¹,

Yang²

2016

Journal of Power Electronics

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The efficiency of light-emitting diode (LED) devices is a significant factor that reflects the capability of these devices to convert electrical power into optical power. In this study, a method for estimating the efficiency of LED devices is proposed. An efficiency model and a heat power model are established as convenient tools for LED performance evaluation. Such models can aid in the design of LED drivers and in the reliability evaluation of LED devices. The proposed estimation method for the efficiency and heat power of LED devices is verified by experimentally testing two types of commercial LED devices.

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Color Variation Reduction of GaN-Based White Light-Emitting Diodes Via Peak-Wavelength Stabilization

Cited by 42 publications

References 18 publications

Solid-State Lighting: A Concise Review of the State of the Art on LED and OLED Modeling

Solid-State Lighting: A Concise Review of the State of the Art on LED and OLED Modeling

Precise Color Control of Red-Green-Blue Light-Emitting Diode Systems

An Estimation Method for the Efficiency of Light-Emitting Diode (LED) Devices

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