In this paper, the general aspects of backlight unit design are considered as a whole. A new key parameter for BLU design, the FWHM to pitch ratio, is introduced and a reasonable value will be proposed. In addition, a new procedure for the uniformity analysis of direct-lit BLUs will be introduced, which is necessary due to the upcoming high-resolution matrix backlight. The aspects and challenges of local-dimming of high-resolution BLUs will be described and amended solutions for excellent results will be proposed. In the last section, new metrics for performance evaluation are introduced.

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This paper handles further development of a proposed combined PAM and PWM driving scheme for Micro‐LED displays. A prototype display which consists of 64x3x64 pixels is driven by a combined PAM and PWM scheme. The occurring non‐ uniformity of Micro‐LED displays is improved by two extensions in the driving scheme. First, an analog bit for high luminance compensation and second, a compensation method that uses the high gray scale of digital driving schemes.

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For displaying HDR images, an Edge-Lit LCD was amended and achieves 2400 nits brightness. A new adaptive EOTF combining the strength of Gamma function and Barten CSF is developed. Based on brilliance analysis, dull images are displayed at lower power without glaring viewers, while brilliant images appear vivid and naturalistic.