[17p-P07-1~23] 13.8 Optical properties and light-emitting devices

[17p-P07-1] Image Analysis for Evaluating the Luminescent Characteristics of Inorganic EL Devices

〇Taketo Sato¹, Tatsuya Kaku¹, Shuichi Sato¹ (1.Tokyo Denki Univ.)

Keywords:

Electroluminescence,Image Processing Techniques,Color Distribution

This study introduces a cost-effective, image processing-based method for evaluating the performance of electroluminescence (EL) devices, including inorganic EL. Traditional photometers, though accurate, are expensive and not widely accessible, particularly in budget-constrained settings. Our method uses general cameras to capture detailed brightness and chromaticity data, providing a comprehensive analysis of both brightness and color distribution at a lower cost. We tested various inorganic EL devices with different structural and phosphor layer configurations. While conventional photometry indicated higher luminance for devices with planar electrodes, our image analysis showed comparable brightness across different configurations by standardizing luminance within photographs. This approach allows for a broader assessment of the entire device, enhancing insights into uniformity and intensity, making it a viable alternative to traditional photometry for detailed luminance and color evaluation of inorganic EL devices.