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A novel low reflectivity composite film using commonly used film materials in TFT technology for borderless LCD display applications was investigated and prepared in this paper, and the design of low reflectivity structure was also given. Experimental result shows that by depositing ITO/MoNb/ITO/Cu on glass with optimized film thickness, the reflectivity at 550nm can be reduced to 4.39%. It is also found that the total visible light reflectivity and performance in the long‐wavelength spectrum can be adjusted by varying the film thickness of ITO and MoNb. [ABSTRACT FROM AUTHOR]

In this Letter, the impact of non-Gaussian noise caused by a nonlinear equalizer on low-density parity-check code (LDPC) performance is investigated in a 25-km 50-Gb/s pulse amplitude modulation4 (PAM4) direct detection system. The lookup table (LUT)-based log-likelihood ratio (LLR) calculation method is proposed to enhance the LDPC performance for the non-Gaussian noise case. Compared to the conventional LLR calculation method based on Gaussian distribution, the proposed method can improve 0.6-dB sensitivity in artificial neural network (ANN) equalizer systems. In addition, the conventional generalized mutual information (GMI) is proven to be an imperfect predictor of LDPC performance after nonlinear equalizers, such as decision feedback equalization (DFE) and ANN equalizer.