Two-Dimensional Pixel-Level Photometric and Colorimetric Mass-Distribution Measurement of Micro-Displays
IEEE Electron Device Letters(2021)
Abstract
Based on Microscopic hyperspectral imaging (mu-HSI) technique, a measurement technique is proposed to precisely determine two-dimensional (2D) pixel- level photometric and colorimetric mass-distributions of micro-displays (mu-displays). Light from halogen lamp coupled into a 1"-integrating cube is used as calibration light source for spectral radiant distribution (SRD). Therefore, optical and colorimetric parameters of each pixel on mu-displays can be easily obtained. Active-matrix organic light-emitting diode (AMOLED) and Micro-LED samples are tested by the proposed method and conventional spectroradiometer with satisfactory consistency. Besides, detailed differences between pixels are accessible for further evaluation from the 2D pixel-level luminance and color distributions of mu-displays.
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Key words
mu-display,hyperspectral imaging,pixel level
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