Research on a Novel GaN-Based Converted Mini-LED Backlight Module via a Spectrum-Decouple System

Huang, Che-Hsuan; Chang, Shu Hsiu; Liaw, Been-Yu; Liu, Cheng-Yi; Chou, Chia-Yueh; Zhou, Jia-Rou; Lin, Chien-Chung; Kuo, Hao‐Chung; Song, Lijun; Li, Feng; Liu, Xinke

doi:10.1109/access.2020.3010026

Cited by 9 publications

(3 citation statements)

References 20 publications

(26 reference statements)

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“…Local dimming technology can greatly reduce LCD power consumption compared to the normal global backlight. However, considering the Mini-LED energy loss [54] and chip driving [9,17], the overall power consumption of the Mini-LED local dimming system still has room for optimization. The power consumption of the dimming system is affected by various factors such as panel size, display image content and brightness, and backlight efficiency.…”

Section: Mini-led Backlight Evaluation Parametersmentioning

confidence: 99%

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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Section: Mini-led Backlight Evaluation Parametersmentioning

confidence: 99%

Mini-LED Backlight Technology Progress for Liquid Crystal Display

et al. 2022

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“…An emerging practice in the field of display technology is the application of a QLED coating to LEDs, which was started to be used in backlight modules [ 18 , 19 , 20 ]. In recent years, the demand for high dynamic range (HDR), low power consumption, and thinness at the application level of high-end displays has led to the use of mini-LEDs and micro-LEDs as backlight sources for LCDs [ 21 , 22 , 23 ]. Mini-LEDs and micro-LEDs have smaller package sizes than traditional LEDs.…”

Section: Introductionmentioning

confidence: 99%

Application of Mini-LEDs with Microlens Arrays and Quantum Dot Film as Extra-Thin, Large-Area, and High-Luminance Backlight

Chen

Lai

et al. 2022

Nanomaterials

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The demand for extra-thin, large-area, and high-luminance flat-panel displays continues to grow, especially for portable displays such as gaming laptops and automotive displays. In this paper, we propose a design that includes a light guide layer with a microstructure above the mini-light-emitting diode light board. The light control microstructure of concave parabel-surface microlens arrays on a light-emitting surface increases the likelihood of total internal reflection occurring and improved the uniformity merit function. We used a 17 in prototype with quantum-dot and optical films to conduct our experiments, which revealed that the thickness of the module was only 1.98 mm. When the input power was 28.34 watts, the uniformity, average luminance, and CIE 1931 color space NTSC of the prototype reached 85%, 17,574 cd/m2, and 105.37%, respectively. This module provided a flat light source that was extra thin and had high luminance and uniformity.

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“…Mini-LEDs, because of their smaller size and high current density injection drive, can achieve high-contrast HDR and high brightness. Mini-LEDs are thus considered a promising backlight source for next-generation high-end LCDs [ 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Mini-LEDs with Diffuse Reflection Cavity Arrays and Quantum Dot Film for Thin, Large-Area, High-Luminance Flat Light Source

Cheng

Liu³

et al. 2021

Nanomaterials

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Mini-light-emitting diodes (mini-LEDs) were combined with multiple three-dimensional (3D) diffuse reflection cavity arrays (DRCAs) to produce thin, large-area, high-brightness, flat light source modules. The curvature of the 3D free-form DRCA was optimized to control its light path; this increased the distance between light sources and reduced the number of light sources used. Experiments with a 12.3-inch prototype indicated that 216 mini-LEDs were required for a 6 mm optical mixing distance to achieve a thin, large-area surface with high brightness, uniformity, and color saturation of 23,044 cd/m2, 90.13%, and 119.2, respectively. This module can serve as the local dimming backlight in next generation automotive displays.

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Research on a Novel GaN-Based Converted Mini-LED Backlight Module via a Spectrum-Decouple System

Cited by 9 publications

References 20 publications

Mini-LED Backlight Technology Progress for Liquid Crystal Display

Mini-LED Backlight Technology Progress for Liquid Crystal Display

Application of Mini-LEDs with Microlens Arrays and Quantum Dot Film as Extra-Thin, Large-Area, and High-Luminance Backlight

Mini-LEDs with Diffuse Reflection Cavity Arrays and Quantum Dot Film for Thin, Large-Area, High-Luminance Flat Light Source

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