International Journal of Advances in Electrical Engineering
2024, Vol. 5, Issue 2, Part B
Thermal-responsive gamma adjustment for mitigating luminance non-uniformity in AMOLED technology
Author(s): Adi Merewai Naisilisili
Abstract: Luminance non-uniformity remains a significant challenge in AMOLED (Active Matrix Organic Light Emitting Diode) displays, primarily caused by thermal gradients and OLED material degradation under varying temperature conditions. This study aimed to develop and validate a thermal-responsive gamma adjustment technique to mitigate luminance inconsistencies and improve image fidelity across a temperature range of 10°C to 80°C. A custom-designed AMOLED display module was employed, integrated with multiple embedded thermal sensors and controlled via a microcontroller unit for real-time data acquisition. The dynamic gamma correction algorithm was implemented using MATLAB R2022a and Python 3.9, while luminance uniformity and image fidelity scores were measured with a Konica Minolta CS-2000 luminance meter. Thermal behavior was monitored using a FLIR T540 thermal camera. Results indicated significant improvements in both luminance uniformity and image fidelity post-adjustment, with uniformity indices increasing from 0.65-0.82 to 0.88-0.95, and image fidelity scores improving from 70-80 to 85-92 (p<0.05). Furthermore, power consumption showed a strong positive correlation with temperature (r = 0.998, p<0.05), highlighting the trade-off between thermal management and energy efficiency. The dynamic gamma adjustment technique demonstrated superior adaptability and responsiveness compared to traditional static correction methods, effectively stabilizing luminance and preserving image quality across fluctuating thermal conditions. Practical recommendations include integrating higher-resolution thermal sensors, optimizing gamma correction algorithms using machine learning, and adopting intelligent power management strategies to balance performance and efficiency. These findings provide a robust foundation for enhancing AMOLED display reliability, visual quality, and operational lifespan in both portable and large-scale applications.
DOI: 10.22271/27084574.2024.v5.i2b.78
Pages: 109-114 | Views: 41 | Downloads: 12
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How to cite this article:
Adi Merewai Naisilisili. Thermal-responsive gamma adjustment for mitigating luminance non-uniformity in AMOLED technology. Int J Adv Electr Eng 2024;5(2):109-114. DOI: 10.22271/27084574.2024.v5.i2b.78
