Light & Engineering 31 (6)

Volume 31
Date of publication 12/13/2023
Pages 113–117

Spectrum Modelling as a Method for Temperature Correction of Organic Light Emitting Diodes Based on Three-Component Structures L&E, Vol.31, No.6, 2023

Articles authors:

Ilya V. Surkov, Maxim A. Fenik, Victoria A. Rybina, Andrey N. Turkin

Ilya V. Surkov, is studying for a master’s degree in semiconductors science at the National Research University Moscow Power Engineering Institute, Russia. His area of interest is semiconductor physics

Maxim A. Fenik is a master’s student majoring in light and engineering science at National Research University Moscow Power Engineering Institute, Russia. He is interested in research in the field of colorimetry

Victoria A. Rybina is an assistant-teacher of the courses devoted to fundamentals of light and engineering and mathematical modelling of the threshold colour vision at Moscow Power Engineering Institute, and also she is in staff of the Russian Lighting Research Institute named after Sergey I. Vavilov (VNISI)

Andrey N. Turkin, Ph. D. in Phys.-Math. He graduated from the Physics Department of Lomonosov Moscow State University in 1995. Now he is an Associate Professor of the Department of Optics, Spectroscopy and Physics of Nano-systems, Faculty of Physics at Lomonosov Moscow State University and Associate Professor of Light and Engineering Sub-department at NRU MPEI

Abstract:

OLED technology is widely used in various displays, which operate in a wide range of temperatures. For such devices, it is necessary to maintain the luminance and chromaticity coordinates at the given level when the external temperature changes. In this work, a program was developed that, based on the electro-physical characteristics and electroluminescence spectra of a white OLED sample at different temperatures and currents, as well as the spectral characteristics of the coloured filters, allows for selection of currents in the range of (1–25) mA, applied to each subpixel in such a way as to converge the chromaticity coordinates to the specified values. Various chromaticity coordinates were tested in the process of program execution, including CIE sources of type A, type B, type C, and type D65. In each of these cases, the program significantly reduced the difference in chromaticity coordinate changes with temperature. The obtained results will be used for gamma correction of micro-displays produced at the Cyclone Research Institute during their operation at a wide range of temperatures.

References:

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Keywords

DOI: https://doi.org/10.33383/2023-062

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