41‐2: <i>Invited Paper:</i> An Advanced High‐Dynamic‐Range LCD for Smartphones

Zheng, Binyi; Zheng, J. P.; Wu, Lei; Yang, William; Lin, Zongwei; Wang, Hailiang; Shen, Poping; Li, Junyi

doi:10.1002/sdtp.12983

Cited by 11 publications

(6 citation statements)

References 2 publications

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“…14,15 Recently, with the rapid development of mini-LED technology, direct-lit backlights with local dimming functions can also be made quite thin. [16][17][18] As a result, both HDR and thin profile can be achieved simultaneously.…”

Section: Liquid Crystal Displaysmentioning

confidence: 99%

Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

et al. 2021

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Recently, "liquid crystal display (LCD), organic light-emitting diode (OLED), or micro-light-emitting diode (LED): who wins?" is a heated debatable question. In this review article, we provide a comprehensive overview of these three promising display technologies through nine display performance indicators, including ambient contrast ratio, motion picture response time, viewing angle and angular color shift, color gamut, resolution density, power consumption, cost, lifetime, and thin profile and panel flexibility. The advantages and disadvantages of each technology are analyzed, and their future perspectives are discussed.

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Section: Liquid Crystal Displaysmentioning

confidence: 99%

Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

et al. 2021

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“…There are many ways to obtain batwing-type radiation mode. Zheng et al added a specially designed micro structure film between the brightness enhancement film (BEF) and diffuser plate [14]. Shen et al used the lattice patterned micro lens array optical films above the Mini-LED dimming array [46].…”

Section: Innovative Design Of Optical Structurementioning

confidence: 99%

“…In the process of thinning the direct-lit backlight module, if the OD is too short to allow for sufficient light diffusion, regular hotspots would appear in the backlight, the appearance of which was basically the same as Mini-LED distribution [14]. Expanding the illumination range of a single Mini-LED can eliminate hotspots to a degree.…”

Section: Innovative Design Of Optical Structurementioning

confidence: 99%

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Mini-LED Backlight Technology Progress for Liquid Crystal Display

et al. 2022

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As consumers pursue higher display quality, Mini-LED backlight technology has become the focus of research in the current display field. With its size advantage (100–200 μm), it can achieve one-thousand-level divisional dimming, and it can also be combined with quantum dot technology to greatly improve the contrast, color gamut, dark state and other element of the display performance of LCD displays. Mini-LED backlight technology is undoubtedly the most ideal solution to realize a highly dynamic range display of LCD displays, and has been widely commercialized in many fields such as TVs, tablet computers, notebook computers, and car monitors. This review mainly introduces the efforts made by researchers to eliminate the halo effect, thinning of the backlight module and reducing the backlight power consumption. The application of quantum dot technology in backlight is also presented. We predict that the number of Mini-LED backlight partitions is expected to reach a level of more than 3000 in the future, further utilizing the advantages of the small size in local dimming, but it will also inevitably be challenged by some issues such as power consumption and heat dissipation.

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“…At the 2023 SID Automotive Displays conference, BOE demonstrated an 800-nit 42.2″ curved mLCD integrated infotainment display prototype, featuring 1439 local dimming zones. In addition, innovative approaches, such as advanced backlight driving algorithms, tailored mini-LED light spread function (LSF), and liquid crystal layer optimization, are able to further increase the backlight uniformity [15][16][17], reduce the power consumption [18], and mitigate the undesirable halo effect [19]. Despite these advancements, the LCD panel transmittance is often below 10% due to significant losses from polarizers, opaque thin-film transistors, and color filters, which in turn limit the peak brightness.…”

Section: Introductionmentioning

confidence: 99%

Enhancing a Display’s Sunlight Readability with Tone Mapping

Qian,

Chen,

Hsiang

et al. 2024

Photonics

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The sunlight readability of display devices, such as notebook computers, transparent displays, vehicle displays, and augmented reality, is a significant technical challenge due to degraded image quality. To mitigate this problem, by fitting the human eye function, we propose a tone mapping method on a mobile phone display panel to enhance low grayscale image readability under bright ambient light. Additionally, we adapt a mini-LED backlight model to simulate real images under different ambient lighting conditions. Both experimental and simulated results indicate that high luminance displays with an optimized gamma value significantly enhance sunlight readability and image quality. Moreover, global color rendering can alleviate color shift. Such a method is also valid for the optimization of optical see-through devices under diverse environmental conditions.

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41‐2: Invited Paper: An Advanced High‐Dynamic‐Range LCD for Smartphones

Cited by 11 publications

References 2 publications

Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

Prospects and challenges of mini‐LED, OLED, and micro‐LED displays

Mini-LED Backlight Technology Progress for Liquid Crystal Display

Enhancing a Display’s Sunlight Readability with Tone Mapping

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