74‐5: <i>Late-News Paper:</i> High Dynamic Range Incell LCD with Excellent Performance

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

doi:10.1002/sdtp.12215

Cited by 22 publications

(13 citation statements)

References 2 publications

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“…The standard deviation ρ can be tuned to achieve good spatial uniformity. In our simulations, the system settings are based on the device configuration reported in [30]. The dimensions of mini-LED array are p = 1 mm and s = 0.5 mm.…”

Section: Simulation Model and Verificationmentioning

confidence: 99%

High dynamic range liquid crystal displays with a mini-LED backlight

et al. 2018

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We analyze the performance of high dynamic range liquid crystal displays (LCDs) using a two-dimensional local dimming mini-LED backlight. The halo effect of such a HDR display system is investigated by both numerical simulation and human visual perception experiment. The halo effect is mainly governed by two factors: intrinsic LCD contrast ratio (CR) and dimming zone number. Based on our results, to suppress the halo effect to indistinguishable level, a LCD with CR≈5000:1 requires about 200 local dimming zones, while for a LCD with CR≈2000:1 the required dimming zone number is over 3000. Our model provides useful guidelines to optimize the mini-LED backlit LCDs for achieving dynamic contrast ratio comparable to organic LED displays.

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Section: Simulation Model and Verificationmentioning

confidence: 99%

High dynamic range liquid crystal displays with a mini-LED backlight

et al. 2018

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“…Id(θ) ∝ cos(θ), for a strong diffuser. To validate our simulations, we study a 6.4-inch 2880×1440 LCD system reported in [5,6]. The backlight consists of 24×12 local dimming zones and each zone has 6×6 mini-LEDs, which can be modulated independently.…”

Section: Simulation Model and Verificationmentioning

confidence: 99%

“…The simplest method of halo effect reduction is to increase the number of local dimming zones. In Tianma's design, 1-mm LED pitch length and 6x6 LEDs per zone were adopted, corresponding to 288 zones [6]. Here, we keep the same LED distribution, but change the number of LEDs in each dimming zone.…”

Section: Number Of Local Dimming Zones and Lc Contrast Ratiomentioning

confidence: 99%

41‐3: Mini‐LED Enhanced LCD for High Dynamic Range Displays

Huang

Tan

et al. 2019

Symp Digest of Tech Papers

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We propose a high dynamic range (HDR) mini-LED enhanced liquid crystal display (LCD) system. Through both numerical simulations and human visual perception experiments, we find that the halo effect (light leakage between adjacent black and bright pixels) can be suppressed to unnoticeable level by optimizing the LCD contrast ratio, number of local dimming zones, LED light expansion and local light confinement. The benefits and problems of each solution are discussed in detail. Additionally, with the merits of low power consumption, freeform panel shape and thin profile, mini-LED backlit LCDs is emerging as a strong contender for next-generation HDR displays.Author Keywords liquid crystal displays; mini-LED; high dynamic range; local dimming; halo effect; high contrast ratio.

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“…µLED designs are widely classified into two types: chip‐based µLEDs (transferring packaged red‐green‐blue unit) and thin‐film µLEDs (having thickness less than 5 µm). A number of researches in the industry and at universities have developed the chip‐based µLED displays and biomedical devices . Although the assembly process for LED digital signage is well established based on the conventional LED technologies, chip‐based µLED display has a critical limitation in the mass production of low‐cost consumer TVs caused by handling millions of individual chip transfer .…”

Section: Introductionmentioning

confidence: 99%

Micro Light‐Emitting Diodes for Display and Flexible Biomedical Applications

Lee

Shin

Park

et al. 2019

Adv Funct Materials

152

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Inorganic-based micro light-emitting diodes (µLEDs) have witnessed significant improvements in terms of display and biomedical applications, which can shift the paradigm of future optoelectronic systems. In particular, µLED displays are on the verge of becoming the next big interface platform for visual communications, expanding to various internet of things and wearable/bioapplications. Novel µLED concepts need to be upgraded to be able to satisfy their potential optoelectric applications, such as virtual reality, smart watches, and medical sensors for individual computing in this hyperconnected society. Here, representative progresses in the field of flexible µLEDs are reviewed with regard to device structures, massive µLED transfers, methods for performance enhancement, and applications.

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74‐5: Late-News Paper: High Dynamic Range Incell LCD with Excellent Performance

Cited by 22 publications

References 2 publications

High dynamic range liquid crystal displays with a mini-LED backlight

High dynamic range liquid crystal displays with a mini-LED backlight

41‐3: Mini‐LED Enhanced LCD for High Dynamic Range Displays

Micro Light‐Emitting Diodes for Display and Flexible Biomedical Applications

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