Impact of high-resolution matrix backlight on local-dimming performance and its characterization

Abstract

In this paper, the general aspects of backlight unit design are considered as a whole. A new key parameter for BLU design, the FWHM to pitch ratio, is introduced and a reasonable value will be proposed. In addition, a new procedure for the uniformity analysis of direct-lit BLUs will be introduced, which is necessary due to the upcoming high-resolution matrix backlight. The aspects and challenges of local-dimming of high-resolution BLUs will be described and amended solutions for excellent results will be proposed. In the last section, new metrics for performance evaluation are introduced.

Physically Detachable and Operationally Stable Cs2SnI6 Photodetector Arrays Integrated with µ‐LEDs for Broadband Flexible Optical Systems

“…In principle, the cross‐talk can be technically improved by adopting standard technologies in flat panel displays (FPDs) such as black matrix or electrical local‐dimming technologies during operation of the backlight. [ 83 ] For practical impacts, the detachable perovskite PD‐arrays with the compatibility of a modular assembly approach can be practically extended toward monolithic optical wireless interconnection in the advanced Si‐based system hybridized with the PDs electronics.…”

Physically Detachable and Operationally Stable Cs2SnI6 Photodetector Arrays Integrated with µ‐LEDs for Broadband Flexible Optical Systems

“…In principle, the cross‐talk can be technically improved by adopting standard technologies in flat panel displays (FPDs) such as black matrix or electrical local‐dimming technologies during operation of the backlight. [ 83 ] For practical impacts, the detachable perovskite PD‐arrays with the compatibility of a modular assembly approach can be practically extended toward monolithic optical wireless interconnection in the advanced Si‐based system hybridized with the PDs electronics.…”

61‐2: Invited Paper: ShyTech Displays High resolution Displays Hidden Behind Decorative Surfaces

“…In addition, the next generation of matrix local dimming backlight with a higher resolution of LED matrix will offer an even better power saving rate because the increased number of LEDs will better match the image and illuminate fewer surrounding pixels. Consequently, high resolution BLU would positively influence both, the contrast and the power saving rate [5,6].…”

42‐3: Impact of resolution of image condensation and of matrix BLU on power saving, contrast enhancement and local dimming processor complexity dedicated to automotive applications

“…Beside deeper black, the size of black spots gets larger, so that the visual quality overall is significantly better. A further leverage is customized HMI design for local dimming which may reduce power consumption without causing any further cost [5]. These methods, algorithm with higher resolution of image condensation and HMI design, alone or combined may lift the trade-off between local dimming performance and local dimming cost and accelerate the penetration of local dimming technology in automotive industry.…”

Physically Detachable and Operationally Stable Cs2SnI6 Photodetector Arrays Integrated with µ‐LEDs for Broadband Flexible Optical Systems

“…In principle, the cross‐talk can be technically improved by adopting standard technologies in flat panel displays (FPDs) such as black matrix or electrical local‐dimming technologies during operation of the backlight. [ 83 ] For practical impacts, the detachable perovskite PD‐arrays with the compatibility of a modular assembly approach can be practically extended toward monolithic optical wireless interconnection in the advanced Si‐based system hybridized with the PDs electronics.…”

61‐2: Invited Paper: ShyTech Displays High resolution Displays Hidden Behind Decorative Surfaces

“…In addition, the next generation of matrix local dimming backlight with a higher resolution of LED matrix will offer an even better power saving rate because the increased number of LEDs will better match the image and illuminate fewer surrounding pixels. Consequently, high resolution BLU would positively influence both, the contrast and the power saving rate [5,6].…”

42‐3: Impact of resolution of image condensation and of matrix BLU on power saving, contrast enhancement and local dimming processor complexity dedicated to automotive applications

“…Beside deeper black, the size of black spots gets larger, so that the visual quality overall is significantly better. A further leverage is customized HMI design for local dimming which may reduce power consumption without causing any further cost [5]. These methods, algorithm with higher resolution of image condensation and HMI design, alone or combined may lift the trade-off between local dimming performance and local dimming cost and accelerate the penetration of local dimming technology in automotive industry.…”

Physically Detachable and Operationally Stable Cs2SnI6 Photodetector Arrays Integrated with µ‐LEDs for Broadband Flexible Optical Systems

“…In principle, the cross‐talk can be technically improved by adopting standard technologies in flat panel displays (FPDs) such as black matrix or electrical local‐dimming technologies during operation of the backlight. [ 83 ] For practical impacts, the detachable perovskite PD‐arrays with the compatibility of a modular assembly approach can be practically extended toward monolithic optical wireless interconnection in the advanced Si‐based system hybridized with the PDs electronics.…”

61‐2: Invited Paper: ShyTech Displays High resolution Displays Hidden Behind Decorative Surfaces

“…In addition, the next generation of matrix local dimming backlight with a higher resolution of LED matrix will offer an even better power saving rate because the increased number of LEDs will better match the image and illuminate fewer surrounding pixels. Consequently, high resolution BLU would positively influence both, the contrast and the power saving rate [5,6].…”

42‐3: Impact of resolution of image condensation and of matrix BLU on power saving, contrast enhancement and local dimming processor complexity dedicated to automotive applications

“…Beside deeper black, the size of black spots gets larger, so that the visual quality overall is significantly better. A further leverage is customized HMI design for local dimming which may reduce power consumption without causing any further cost [5]. These methods, algorithm with higher resolution of image condensation and HMI design, alone or combined may lift the trade-off between local dimming performance and local dimming cost and accelerate the penetration of local dimming technology in automotive industry.…”