Development of reverse dispersion liquid crystal film to improve “halo” of high‐dynamic‐range LCDs

Iwasaki, Tatsuya; Nakamura, Yuki; Sumi, Toshikazu; Ohmuro, Katsufumi; Suzuki, Masaaki; Ito, Yoji

doi:10.1002/jsid.1016

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Key Technology For Test Of Mini-led-backlit Lcd Display1

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2022

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“…However, due to the strong subjectivity of manual observation and the different degrees of visual sensitivity of different personnel, the judgment results cannot be quantitatively and objectively and cannot be compared horizontally. Therefore, it is necessary to use objective and quantitative test methods for testing [4,5].…”

Section: Key Technology For Test Of Mini-led-backlit Lcd Displaymentioning

confidence: 99%

16.5: Key Technologies and Algorithm of Measurement for Mini‐LED‐backlit LCDs

Tang¹,

Li²,

Pan³

et al. 2022

Symp Digest of Tech Papers

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Mini‐LED‐backlit LCD display has extremely high dynamic range and contrast ratio, but also brings halo effect. The halo phenomenon will make the original high‐definition, high‐contrast picture seems to be covered with a veil, which reduces the visibility and quality of the picture, and cannot reflect the superiority of HDR display. Based on the measurement and evaluation requirements of Mini‐LED‐backlit LCD displays, this paper proposes a test and evaluation scheme for halo phenomenon, and analyzes the key factors affecting the measurement, including the V(λ) mismatch, measurement lower limit and dynamic range, imaging quality of imaging luminance meter and halo evaluation algorithm based on Mura analysis, etc. .

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Section: Key Technology For Test Of Mini-led-backlit Lcd Displaymentioning

confidence: 99%