Pixel-By-Pixel Local Dimming For High-Dynamic-Range Liquid Crystal Displays

Abstract

We propose a high dynamic range (HDR) liquid crystal display (LCD) with pixel-level local dimming. The device structure consists of a pixelated LCD dimming panel to control the backlight intensity entering the master LCD panel. According to our analysis and test cell experiment, this dual-panel display system possesses exceedingly high contrast ratio (> 1,000,000:1) and high bit-depth (> 14 bits) at merely 5 volts. Meanwhile, to mitigate the Moiré effect induced by the cascaded thin-film transistor (TFT) backplanes, we separate the two LCD panels with a polarization-dependent scattering film. The pros and cons of this HDR display are discussed.

Publication Date

2-6-2017

Publication Title

Optics Express

Volume

25

Issue

3

Number of Pages

1973-1984

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/OE.25.001973

Socpus ID

85011664908 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85011664908

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