A new class of very efficient algorithms for local dimming

Krause, Michael; Riplinger, Martin; Louis, Alfred K.; Xu, Chihao

doi:10.1007/s11081-017-9350-9

Cited by 3 publications

(3 citation statements)

References 9 publications

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“…HDR images offer a greater dynamic range and resolution, better reproducing natural scenes [4,5]. Achieving HDR typically requires high peak brightness, excellent dark state control, accurate grayscale, wide color gamut, and more [6]. Local dimming technology has been effective in suppressing dark states and enhancing contrast to achieve HDR.…”

Section: Introductionmentioning

confidence: 99%

Advancing LED Technology: The FDCSP Element's Breakthrough in Mini and Micro-LED Packaging and Backlight Module Enhancement

Chen,

Huang,

Lee

et al. 2024

Preprint

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In this research, we introduce an advanced methodology for the calculation of bulk light sources tailored for free-form surface design, focusing on the principle of energy conservation. This method is especially relevant for the evolving needs of micro-LED packaging, highlighting its potential in this burgeoning field. Our work includes the development of an algorithm for creating Freeform-Designed Chip-Scale Package (FDCSP) components. These components seamlessly integrate LEDs and lenses, underscoring our commitment to advancing free-form surface design in chip-level packaging. By adhering to the principle of energy conservation, our approach facilitates a meticulous comparison of simulation outcomes with predefined target functions. This enables the iterative correction of discrepancies, employing layering techniques to refine the design until the simulated results closely align with our goals, as demonstrated by an appropriate difference curve. The practical application of these simulations leads to the innovative design of FDCSP devices. Notably, these devices are not just suitable for traditional applications in backlight modules but are explicitly optimized for the emerging sector of micro-LED packaging. Our successful demonstration of these FDCSP devices within backlight modules represents a significant achievement. It underscores the effectiveness of our design strategy and its expansive potential to transform micro-LED packaging solutions. This research not only contributes to the theoretical understanding of energy conservation in lighting design but also paves the way for groundbreaking applications in micro-LED and backlight module technologies.

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Section: Introductionmentioning

confidence: 99%

Advancing LED Technology: The FDCSP Element's Breakthrough in Mini and Micro-LED Packaging and Backlight Module Enhancement

Chen,

Huang,

Lee

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…HDR images offer a greater dynamic range and resolution, better reproducing natural scenes [ 8 , 9 ]. Achieving HDR typically requires high peak brightness, excellent dark state control, accurate grayscale, wide color gamut, and more [ 10 ]. Local dimming technology has been effective in suppressing dark states and enhancing contrast to achieve HDR.…”

Section: Introductionmentioning

confidence: 99%

Advancing LED technology: the FDCSP element’s breakthrough in mini and micro-LED packaging and backlight module enhancement

Chen,

Huang,

Lee

et al. 2024

Discover Nano

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In this research, we introduce an advanced methodology for the calculation of bulk light sources tailored for free-form surface design, focusing on the principle of energy conservation. This method is especially relevant for the evolving needs of micro-LED packaging, highlighting its potential in this burgeoning field. Our work includes the development of an algorithm for creating freeform-designed chip-scale package (FDCSP) components. These components seamlessly integrate LEDs and lenses, underscoring our commitment to advancing free-form surface design in chip-level packaging. By adhering to the principle of energy conservation, our approach facilitates a meticulous comparison of simulation outcomes with predefined target functions. This enables the iterative correction of discrepancies, employing layering techniques to refine the design until the simulated results closely align with our goals, as demonstrated by an appropriate difference curve. The practical application of these simulations leads to the innovative design of FDCSP devices. Notably, these devices are not just suitable for traditional applications in backlight modules but are explicitly optimized for the emerging sector of micro-LED packaging. Our successful demonstration of these FDCSP devices within backlight modules represents a significant achievement. It underscores the effectiveness of our design strategy and its expansive potential to transform micro-LED packaging solutions. This research not only contributes to the theoretical understanding of energy conservation in lighting design but also paves the way for groundbreaking applications in micro-LED and backlight module technologies.

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“…For next generation liquid crystal display (LCD) displays, high dynamic range (HDR) is an important feature [1]. To achieve HDR, local dimming is a technique, which can effectively suppress the dark state and greatly enhance the contrast ratio [2][3][4]. For local dimming technique, segmented light emitting diodes (LEDs) are adopted in the LCD backlight unit, where the local zones can be independently dimmed to match the displayed image contents.…”

Section: Introductionmentioning

confidence: 99%

Ultra-High Light Extraction Efficiency and Ultra-Thin Mini-LED Solution by Freeform Surface Chip Scale Package Array

et al. 2019

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In this study, we present a novel type of package, freeform-designed chip scale package (FDCSP), which has ultra-high light extraction efficiency and bat-wing light field. For the backlight application, mainstream solutions are chip-scale package (CSP) and surface-mount device package (SMD). Comparing with these two mainstream types of package, the light extraction efficiency of CSP, SMD, and FDCSP are 88%, 60%, and 96%, respectively. In addition to ultra-high light extraction efficiency, because of the 160-degree bat-wing light field, FDCSP could provide a thinner and low power consumption mini-LED solution with a smaller number of LEDs than CSP and SMD light source array.

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A new class of very efficient algorithms for local dimming

Cited by 3 publications

References 9 publications

Advancing LED Technology: The FDCSP Element's Breakthrough in Mini and Micro-LED Packaging and Backlight Module Enhancement

Advancing LED Technology: The FDCSP Element's Breakthrough in Mini and Micro-LED Packaging and Backlight Module Enhancement

Advancing LED technology: the FDCSP element’s breakthrough in mini and micro-LED packaging and backlight module enhancement

Ultra-High Light Extraction Efficiency and Ultra-Thin Mini-LED Solution by Freeform Surface Chip Scale Package Array

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