Domenic Au, Xiuyun Wu, Nava Aghdasi, Yuta Asano, T. Scott Murdison
{"title":"Stereoscopic Brightness Roll-Off in Augmented Reality","authors":"Domenic Au, Xiuyun Wu, Nava Aghdasi, Yuta Asano, T. Scott Murdison","doi":"10.1002/jsid.70025","DOIUrl":"https://doi.org/10.1002/jsid.70025","url":null,"abstract":"<p>The increasing demand for power-efficient immersive displays has led to a growing need for effective power-saving strategies. Brightness roll-off (BRO), a technique that has shown promise in reducing power consumption with minimal impact on perception in desktop and virtual reality (VR) displays, remains largely unexplored in augmented reality (AR). We investigate the effectiveness of BRO as a power-saving approach in AR under stereoscopic viewing conditions, examining its perceptual impacts and modeled power savings for \u0000<span></span><math>\u0000 <mi>μ</mi></math>LED and LCoS displays. Our findings demonstrate that BRO has a negligible effect on perceptual sensitivity in most cases compared to computational metric predictions, highlighting its potential as a perceptually optimized brightness reduction technique in HMDs and the need for psychophysical validation of such metrics. The results provide valuable insights into the acceptable levels of roll-off in a range of images and additive contrasts, underscoring the potential of BRO as a power-saving solution in AR.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 3","pages":"85-98"},"PeriodicalIF":2.2,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sid.onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.70025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147562408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geon-Ho Park, Juhyun Bae, Jinah Kim, Changeui Hong, Seung-Won Jung
{"title":"DnSAD: Defocus and Spatially Adaptive Deblurring for Mura Compensation in Display Panels","authors":"Geon-Ho Park, Juhyun Bae, Jinah Kim, Changeui Hong, Seung-Won Jung","doi":"10.1002/jsid.70027","DOIUrl":"https://doi.org/10.1002/jsid.70027","url":null,"abstract":"<div>\u0000 \u0000 <p>Mura artifacts, characterized by spatially non-uniform brightness or color inconsistencies, are critical defects in high-resolution display panels. Although in-focus images are ideal for camera-based mura compensation, defocused images are commonly captured in practical inspection environments to suppress moiré artifacts. However, defocus blur combined with optical distortion introduces spatially varying blur, which complicates accurate compensation. In this paper, we propose a defocus and spatially adaptive deblurring (DnSAD) framework for mura compensation in display panels. DnSAD addresses this challenge by capturing an additional dot-pattern image that provides essential information about spatially varying point spread functions (PSFs). The proposed framework is built upon a deep Wiener deconvolution backbone, extended to support multiple PSFs. The spatial location of each PSF is encoded into the model via a spatial attention module, enabling localized restoration tailored to the spatial blur distribution. Furthermore, a multi-scale refinement strategy is employed to progressively reconstruct high-frequency details. Experimental results on both real and synthetic datasets demonstrate that DnSAD effectively restores fine-grained mura patterns while adapting to spatial blur variations, outperforming both conventional and recent learning-based approaches.</p>\u0000 </div>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 3","pages":"99-108"},"PeriodicalIF":2.2,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147562409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Artificial Intelligence in Multimedia Content Generation: A Review of Audio and Video Synthesis Techniques","authors":"Charles Ding, Rohan Bhowmik","doi":"10.1002/jsid.2111","DOIUrl":"https://doi.org/10.1002/jsid.2111","url":null,"abstract":"<p>Recent breakthroughs in generative AI have markedly elevated the realism and controllability of synthetic media. In the visual modality, long-context attention mechanisms and diffusion-style refinements now deliver videos with superior temporal consistency, spatial coherence, and high-resolution detail. These techniques underpin an expanding set of applications ranging from text-guided storyboarding and animation to engineering visualization and virtual prototyping. In the audio modality, token-based representations combined with hierarchical decoding enable the direct production of faithful speech, music, and ambient sound from textual prompts, powering rapid voice-over creation, personalized music, and immersive soundscapes. The frontier is shifting toward unified audio–visual pipelines that synchronize imagery with dialog, sound effects, and ambience, promising end-to-end tooling for a wide variety of applications such as education, simulation, entertainment, and accessible content production. This review surveys these advances across modalities and outlines future research directions focused on improving generation efficiency, coherence, and controllability across modalities.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 2","pages":"49-67"},"PeriodicalIF":2.2,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sid.onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146139231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of Volume Holographic Gratings With Statistical Distribution","authors":"Zhongwen Shen, Chao Ping Chen, Zhendong Wu, Yan Yang, Dawei Zhu","doi":"10.1002/jsid.2117","DOIUrl":"https://doi.org/10.1002/jsid.2117","url":null,"abstract":"<div>\u0000 \u0000 <p>For simulating the actual diffraction characteristics of the volume holographic grating (VHG), this paper incorporates multiple periodic gratings into the finite element method (FEM) analysis. The grating periods and refractive index modulation are modeled according to statistical distribution. Thus, the refractive index distribution within the gratings is reconstructed through the Fourier expansion. Utilizing the enhanced model, a quantitative analysis was performed to examine the relationships among model parameters, in relation to the diffraction characteristics. The results demonstrated that the optimized model achieves a correlation degree <i>R</i> <sup>2</sup> of 98% with experimental data. This model also provided a reliable theoretical basis for the precise design of optical systems based on VHGs.</p>\u0000 </div>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 2","pages":"39-48"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146147951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jaybum Kim, Kyeong-Soo Kang, Ji-Hwan Park, Chanjin Park, Minji Kim, Soo-Yeon Lee
{"title":"Oxide TFT-Based Micro-LED Pixel Circuit With Piecewise Linear Sweep Slope Signal for Improved Low Gray-Level Expression","authors":"Jaybum Kim, Kyeong-Soo Kang, Ji-Hwan Park, Chanjin Park, Minji Kim, Soo-Yeon Lee","doi":"10.1002/jsid.2110","DOIUrl":"https://doi.org/10.1002/jsid.2110","url":null,"abstract":"<p>In this paper, we present an amorphous indium-gallium-zinc-oxide (a-IGZO) based pulse width modulation (PWM) pixel circuit for micro light-emitting diode (micro-LED) displays, designed to enhance low gray-level expression. Conventional PWM circuits suffer from a long falling time, causing inaccurate gray-level representation. To address this, the proposed circuit employs a continuous piecewise linear sweep signal with two distinct slopes: a steeper slope for low gray levels and a shallower slope for mid-to-high gray levels. This approach reduces the falling time from 209 to 62 μs, enabling accurate gray-level expression down to 41 G without distortion. To prevent falling time distortion from sweep signal slope transitions, a newly proposed separation part divides the emission period into low and high gray phases. By maintaining a constant sweep signal slope within each phase, the circuit ensures stable emission and eliminates distortion. HSPICE simulation verifies the circuit operation and confirms that it maintains stable performance under threshold voltage variations.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 1","pages":"25-32"},"PeriodicalIF":2.2,"publicationDate":"2025-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sid.onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145987197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hamid Reza Tohidypour, Frank Seto, Panos Nasiopoulos
{"title":"A Comprehensive VRR Dataset of Luminance Signals and Their Perceived Flicker Levels: Insights for Display and GPU Manufacturers","authors":"Hamid Reza Tohidypour, Frank Seto, Panos Nasiopoulos","doi":"10.1002/jsid.2112","DOIUrl":"https://doi.org/10.1002/jsid.2112","url":null,"abstract":"<p>The adoption of variable refresh rate (VRR) technology in displays—aimed at reducing input lag, minimizing video stuttering, and improving power efficiency—has introduced an unforeseen challenge: flicker caused by minor changes in luminance due to the varying duration of each frame. Existing industry flicker measuring metrics are inadequate, often overly restrictive or reliant on impractical subjective evaluations. This highlights the need for an accurate, objective flicker metric specifically designed for VRR displays. Developing such a metric requires a comprehensive dataset that captures a wide range of flicker intensities across different display technologies and luminance conditions. To facilitate this, we compiled a unique VRR dataset consisting of 160 signals, ranging from 2 to 40 cd/m<sup>2</sup>, along with perceived flicker levels obtained through extensive subjective testing, following a standard protocol defined in ITU-R BT.500-15. This dataset serves as a critical resource for flicker assessment, providing valuable insights for display manufacturers, and it is instrumental in advancing VRR technology. Our analysis revealed that JEITA, the most widely used flicker metric for VRR displays, correlates with subjective flicker perception at only 71.43%. This finding underscores the limitations of current metrics and the pressing need for a more reliable standard tailored to VRR technology.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 1","pages":"12-24"},"PeriodicalIF":2.2,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sid.onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seyoung Yoon, Kyungmin Kim, Junho Kim, Zhaoning Yu, Donghee Nam, Seunghyup Yoo
{"title":"3D-Optical Simulation of MicroOLEDs With Multiple Dipoles Based on Finite Element Method","authors":"Seyoung Yoon, Kyungmin Kim, Junho Kim, Zhaoning Yu, Donghee Nam, Seunghyup Yoo","doi":"10.1002/jsid.2115","DOIUrl":"https://doi.org/10.1002/jsid.2115","url":null,"abstract":"<div>\u0000 \u0000 <p>Micro organic light-emitting diodes (microOLEDs) are gaining attention for next-generation augmented reality (AR) and virtual reality (VR) applications due to their compact form factors and high pixel density. However, traditional multilayer thin-film simulations—based on the assumption of dipole emitters embedded in infinite planar layers—fail to capture the three-dimensional optical effects of microOLEDs. This is primarily due to their micrometer-scale pixel size, which becomes comparable to the vertical dimensions of the device, and the presence of a pixel define layer (PDL). To address these limitations, finite element methods (FEM) and finite-difference time-domain (FDTD) methods are commonly employed. However, these methods typically demand substantial computational resources, limiting their uses to the illustration of specific optical characteristics and trends rather than enabling a full quantitative analysis. This study introduces an optimized FEM-based simulation method for micro-scale OLEDs embedded with multiple dipole sources. By incorporating randomly distributed dipole sources with varied positions, orientations, and relative phases, the proposed approach enables accurate far-field radiation pattern calculations while significantly reducing computational burden and simulation time, offering a promising pathway toward comprehensive optical analysis of microOLEDs and thus improving the understanding of light extraction and propagation at the micro-pixel level.</p>\u0000 </div>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"34 1","pages":"3-11"},"PeriodicalIF":2.2,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fabian Rol, Stéphane Altazin, Nicolas Michit, Bastien Miralles, Clément Ballot, Bernard Aventurier, Paolo De Martino, Patrick Le Maitre, Julia Simon
{"title":"Study of Far-Field Electroluminescence Emission to Enhance Micro-LED Performance","authors":"Fabian Rol, Stéphane Altazin, Nicolas Michit, Bastien Miralles, Clément Ballot, Bernard Aventurier, Paolo De Martino, Patrick Le Maitre, Julia Simon","doi":"10.1002/jsid.2114","DOIUrl":"https://doi.org/10.1002/jsid.2114","url":null,"abstract":"<p>This study investigates the angular dependence of far-field electroluminescence (EL) emission in InGaN/GaN LEDs and micro-LEDs to enhance their performance for micro-display and visible optical communication applications. We developed a measurement setup to analyze far-field EL emission across various wavelengths and compared the results with 1D optical simulations. This approach allowed us to observe the well-known dependence of emission directivity and light extraction efficiency (LEE) on the structural parameters of flip-chip LEDs, particularly the thicknesses of p-GaN and n-GaN layers, and to quantify the impact of total thickness variation resulting from wafer thinning processes. Using larger LEDs, the test vehicle offers a valuable tool for designing micro-LEDs with the desired directivity and for process monitoring. We also observed that the angular dependence of far-field emission varies with the applied bias and demonstrated how this could affect wafer-level micro-LED characterizations. Finally, we showed that the far-field EL emission of micro-LEDs progressively deviates from the description by a 1D optical cavity alone, suggesting an increasing influence of the limited size and necessitating 3D-FDTD simulations to accurately model both vertical cavity and sidewall effects. However, for sizes down to 5 μm, the directivity predicted by a 1D model seems roughly preserved.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 12","pages":"1123-1134"},"PeriodicalIF":2.2,"publicationDate":"2025-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sid.onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145698982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effective E-Paper Driving Waveform Design Based on Dynamic Programming","authors":"Danling Kang, Xiaoyan Zhao, Xiaojie Wei, Hongxin Wu, Honghui Zhang, Tiesong Zhao","doi":"10.1002/jsid.2113","DOIUrl":"https://doi.org/10.1002/jsid.2113","url":null,"abstract":"<div>\u0000 \u0000 <p>Electrophoretic display (EPD) driving involves controlling the electric field to drive the movement of charged particles in microcapsules, enabling image display and updates. The effectiveness of EPD technology relies on optimized driving waveform design to ensure display clarity and minimize response time. However, despite advancements, existing EPD techniques continue to face critical challenges such as ghost images, flicker, and long response times, all of which can detract from user experience. To address these issues, this paper proposes a novel EPD driving waveform design algorithm that integrates physical simulation and a dynamic programming approach. This algorithm is designed to identify the optimal driving path, thereby significantly reducing response time while effectively minimizing ghost images and flicker. Experimental results demonstrate that the proposed algorithm effectively mitigates ghost images and flicker, achieving shorter response time and higher display quality in 16-level grayscale print-style color EPD.</p>\u0000 </div>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 12","pages":"1114-1122"},"PeriodicalIF":2.2,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145699028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marco M. Dettling, Patrick Schalberger, Yannick Schellander, Norbert Fruehauf
{"title":"Large-Area Hydrogenated Amorphous Silicon Schottky Photosensor Arrays for Display Integration","authors":"Marco M. Dettling, Patrick Schalberger, Yannick Schellander, Norbert Fruehauf","doi":"10.1002/jsid.2116","DOIUrl":"https://doi.org/10.1002/jsid.2116","url":null,"abstract":"<p>In this work, a system for the real-time spatially resolved detection of visible light on a large area is realized on glass. Schottky photodiodes, consisting of hydrogenated amorphous silicon (a-Si:H) and molybdenum–tantalum (MoTa), are employed as detectors. The detectors exhibit an internal quantum efficiency of up to 70.96% and a response time smaller than 20 μs. The noise equivalent power was measured at 2.424e-10 W/√Hz. Process compatibility with commonly employed amorphous indium gallium zinc oxide (a-IGZO) and a-Si:H thin-film transistors (TFT) is shown. The driving and real-time readout of a photosensor array is demonstrated using a microcontroller and a current-input ADC.</p>","PeriodicalId":49979,"journal":{"name":"Journal of the Society for Information Display","volume":"33 12","pages":"1109-1113"},"PeriodicalIF":2.2,"publicationDate":"2025-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sid.onlinelibrary.wiley.com/doi/epdf/10.1002/jsid.2116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145699147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}