Journal of Information Display最新文献_第7页

Highly efficient electroluminescence devices with a mixed layer of SnO2 and colloidal quantum dots SnO2和胶体量子点混合层的高效电致发光器件

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2022-03-08 DOI: 10.1080/15980316.2022.2039790

C. Yoon, Aram Moon, Heesun Yang, Jiwan Kim

引用次数: 0

Investigation on operation robustness of p-type low-temperature polycrystalline silicon thin-film transistor-based micro light-emitting diode pixel circuit using pulse width modulation under component fluctuation 基于脉冲宽度调制的p型低温多晶硅薄膜晶体管微发光二极管像素电路在元件波动下的稳健性研究

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2022-02-10 DOI: 10.1080/15980316.2022.2029778

Jongsu Oh, Jin-Ho Kim, Eun Kyo Jung, Jongsul Min, Hwarim Im, Yong-Sang Kim

{"title":"Investigation on operation robustness of p-type low-temperature polycrystalline silicon thin-film transistor-based micro light-emitting diode pixel circuit using pulse width modulation under component fluctuation","authors":"Jongsu Oh, Jin-Ho Kim, Eun Kyo Jung, Jongsul Min, Hwarim Im, Yong-Sang Kim","doi":"10.1080/15980316.2022.2029778","DOIUrl":"https://doi.org/10.1080/15980316.2022.2029778","url":null,"abstract":"In this study, we have investigated the operation robustness of a p-type low-temperature polycrystalline silicon (LTPS) thin-film transistor (TFT)-based micro light-emitting diode (µLED) pixel circuit adopting pulse width modulation (PWM) under circuit component fluctuations. The wavelength shift of µLEDs, depending on the current density, was suppressed by implementing PWM. The PWM pixel circuit controlled the emission time with constant µLED current in the simulated and measured results. In addition, the wavelength shift was suppressed below 0.48% within the 10-bit grayscale range. Furthermore, the component tolerance of the pixel circuit was investigated by simulating the error rate of µLED emission time with varying threshold voltage, mobility, subthreshold swing, and capacitance. The pixel circuit exhibited a robust operation with a maximum error rate of 4.0% under a component fluctuation of ±10%. Consequently, the µLED pixel circuit adopting PWM suppressed the wavelength shift of µLEDs and demonstrated robust circuit operation under component fluctuation.","PeriodicalId":16257,"journal":{"name":"Journal of Information Display","volume":"23 1","pages":"185 - 192"},"PeriodicalIF":3.7,"publicationDate":"2022-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41770344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Efficient deep blue (CIE ∼0.08) fluorophore-based benzimidazole with hybridized local and charge transfer (HLCT) excited state for OLEDs 高效深蓝(CIE ~ 0.08)荧光团基苯并咪唑与杂化的局部和电荷转移(HLCT)激发态的oled

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2022-02-06 DOI: 10.1080/15980316.2022.2029592

Jaipal Devesing Girase, Jairam Tagare, S. Mukherjee, Tanwistha Chakrabrati, A. Perumal, S. Vaidyanathan

{"title":"Efficient deep blue (CIE ∼0.08) fluorophore-based benzimidazole with hybridized local and charge transfer (HLCT) excited state for OLEDs","authors":"Jaipal Devesing Girase, Jairam Tagare, S. Mukherjee, Tanwistha Chakrabrati, A. Perumal, S. Vaidyanathan","doi":"10.1080/15980316.2022.2029592","DOIUrl":"https://doi.org/10.1080/15980316.2022.2029592","url":null,"abstract":"Development of efficient deep blue fluorophore with Commission Internationale de l’Eclairage (CIE)y value <0.1 is of great importance for display technology. Herein, we designed and synthesized a thermally stable deep blue emissive material 3-(2-(4′′-(1-phenyl-1H-benzo[d]imidazol-2-yl)-[1,1′:4′,1″-terphenyl]-4-yl)-1H-phenanthro[9,10-d]imidazol-1-yl)benzonitrile (MCNPIBI) by integrating moderate donor and acceptor, namely, phenanthroimidazole (PI) and benzimidazole with cyanophenyl (-CN) group at N1 position of the PI to tune the CT component in the excited states. The systematic theoretical and photophysical study reveals the MCNPIBI with hybridized local and charge transfer (HLCT) excited states. Time-dependent density functional theory (TD-DFT) calculation suggests that the reverse intersystem crossing (RISC) process in MCNPIBI occurs from high-lying triplet states to a singlet state. Furthermore, the synthesized deep blue emissive materials were employed as dopants in multilayer organic light emitting diode (OLED) devices, thus resulting in deep-blue electroluminescence (EL) with an emission wavelength of 447 nm and CIE coordinates of (0.15, 0.08), which are close to the standard values for blue emitters, as suggested by NTSC (0.14, 0.08). The OLED device displays a maximum current efficiency of 2.78 cd A−1, a maximum power efficiency of 1.94 lm W−1, and a maximum external quantum efficiency of 3.69%, respectively. In addition, the OLED device has a low turn in voltage of 3.8 V.","PeriodicalId":16257,"journal":{"name":"Journal of Information Display","volume":"23 1","pages":"151 - 162"},"PeriodicalIF":3.7,"publicationDate":"2022-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45846755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Three-dimensional interactive cursor based on voxel patterns for autostereoscopic displays 基于体素模式的自立体显示三维交互光标

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2022-02-06 DOI: 10.1080/15980316.2022.2029591

V. Saveljev, J. Son, Choonsik Yim, Gwanghee Heo

引用次数: 0

Novel channel edge doping for hump reduction in LTPS TFTs 用于LTPS TFTs峰峰还原的新型通道边缘掺杂

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2022-02-06 DOI: 10.1080/15980316.2022.2029590

Ki Woo Kim, Heesook Lee, Hyun Jae Kim

引用次数: 0

Progress in the development of the display performance of AR, VR, QLED and OLED devices in recent years 近年来AR、VR、QLED和OLED器件显示性能的发展进展

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2022-01-02 DOI: 10.1080/15980316.2022.2035835

H. Jang, Jun Yeob Lee, G. Baek, Jeonghun Kwak, Jaehyeung Park

引用次数: 55

Optical see-through head-mounted display including transmittance-variable display for high visibility 光学透明头戴式显示器，包括透光率可变显示，高能见度

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2021-12-31 DOI: 10.1080/15980316.2021.2018058

Jihyung Kim, Seung-Won Oh, Jin-Young Choi, Sungeun Park, Wooksung Kim

{"title":"Optical see-through head-mounted display including transmittance-variable display for high visibility","authors":"Jihyung Kim, Seung-Won Oh, Jin-Young Choi, Sungeun Park, Wooksung Kim","doi":"10.1080/15980316.2021.2018058","DOIUrl":"https://doi.org/10.1080/15980316.2021.2018058","url":null,"abstract":"This paper presents an optical see-through head-mounted display (OST-HMD) that can provide a highly immersive augmented reality (AR) environment. Because visibility of objects is degraded by external light and because projection optics cannot represent black color, the reality of AR content is reduced. To solve this problem, we adopted an additional transparent display to adjust the transmittance of exterior light. This adjustment is achieved using a guest–host liquid crystal (GHLC) to provide transparency in the initial state and opacity when voltage is applied. To verify the display’s usefulness, we measured ambient contrast ratio (ACR) and color gamut under various ambient light conditions after attaching the GHLC panel to the existing OST-HMD (Microsoft HoloLens). Under typical office illumination, use of the GHLC panel increased the ACR by 4.67 times, and the color gamut by 2.87 times compared to the OST-HMD without it. Under high illumination the panel increased the ACR by 1.54 times and the color gamut by 16.16 times. The proposed method significantly improved the ambient contrast ratio and color expression, and yielded a flexible way to customize existing OST-HMDs by adding a detachable display.","PeriodicalId":16257,"journal":{"name":"Journal of Information Display","volume":"23 1","pages":"121 - 127"},"PeriodicalIF":3.7,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41401323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Image-brightness prediction model for wide-color-gamut displays based on Helmholtz–Kohlrausch (H–K) effect 基于Helmholtz–Kohlrausch（H–K）效应的宽色域显示器图像亮度预测模型

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2021-12-28 DOI: 10.1080/15980316.2021.2018059

Hyeyoung Ha, Hayoung Lee, Inhye Heo, Young-Jun Seo, Hyosun Kim, Yongwoo Yi, Jaejoong Kwon, Changhee Lee

{"title":"Image-brightness prediction model for wide-color-gamut displays based on Helmholtz–Kohlrausch (H–K) effect","authors":"Hyeyoung Ha, Hayoung Lee, Inhye Heo, Young-Jun Seo, Hyosun Kim, Yongwoo Yi, Jaejoong Kwon, Changhee Lee","doi":"10.1080/15980316.2021.2018059","DOIUrl":"https://doi.org/10.1080/15980316.2021.2018059","url":null,"abstract":"A wider array of color gamut and higher luminance are increasingly offered by displays to provide users with immersive content. However, in the latest displays available, it is difficult to predict image brightness because the extensively used color appearance model is made based on a color patch whose color appearance is not the same as that of an image on the display. Therefore, in this study, a method of predicting image brightness on a display depending on its color gamut by quantifying the Helmholtz–Kohlrausch (H–K) effect is proposed. A method for accurately measuring image luminance is also presented. To verify the performance of the proposed model, a brightness matching experiment is performed under two different color gamut sizes. The experimental results confirm that the image appears brighter with the increase in color gamut due to the H–K effect, demonstrating that the proposed prediction model exhibits desirable performance. The proposed brightness prediction model, which includes the image experience in the color range, delivers better image quality to users.","PeriodicalId":16257,"journal":{"name":"Journal of Information Display","volume":"23 1","pages":"115 - 120"},"PeriodicalIF":3.7,"publicationDate":"2021-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46906746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improved electrical performance of solution-processed zinc oxide-based thin-film transistors with bilayer structures 提高溶液法制备双层结构氧化锌薄膜晶体管的电性能

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2021-12-21 DOI: 10.1080/15980316.2021.2011443

Kazuyori Oura, H. Wada, Masatoshi Koyama, T. Maemoto, S. Sasa

{"title":"Improved electrical performance of solution-processed zinc oxide-based thin-film transistors with bilayer structures","authors":"Kazuyori Oura, H. Wada, Masatoshi Koyama, T. Maemoto, S. Sasa","doi":"10.1080/15980316.2021.2011443","DOIUrl":"https://doi.org/10.1080/15980316.2021.2011443","url":null,"abstract":"A bilayer thin-film transistor (TFT) structure with ZnO and Al-doped ZnO (AZO) was fabricated using a solution process. The film thickness and sintering atmosphere of ZnO and AZO were controlled and then evaluated by measuring their electrical characteristics. By changing the sintering atmosphere, carriers attributed to oxygen vacancies in the thin film increased. Moreover, the ZnO single-layer TFT sintered in N2 exhibited good electrical characteristics. In the ZnO/AZO bilayer TFT laminated with the ZnO sintered in N2 and high-resistance AZO thin films, electrical characteristics, such as the On/Off ratio and subthreshold swing, improved compared to those of the ZnO-TFT. The On/Off ratio of the ZnO/AZO-TFT using the AZO thin film sintered in an O2 atmosphere notably improved to 3.7 × 105 compared to that of the ZnO-TFT (1.7 × 104). In addition, the subthreshold swing in the ZnO/AZO-TFT was 0.36 V/dec, while the field-effect mobility was 2.2 × 10−1 cm2/Vs, thereby exhibiting the best electrical characteristics among the fabricated samples. According to the grazing-incidence X-ray diffraction measurement, the ZnO particle size and crystallinity of the ZnO/AZO bilayer were higher than those of the ZnO single layer. Therefore, improvement of the electrical characteristics was confirmed.","PeriodicalId":16257,"journal":{"name":"Journal of Information Display","volume":"23 1","pages":"105 - 113"},"PeriodicalIF":3.7,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48513522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Optimization of the display viewing angle for automotive application 汽车应用中显示器视角的优化

IF 3.7 3区工程技术

Journal of Information Display Pub Date : 2021-12-09 DOI: 10.1080/15980316.2021.1999338

Jongyoon Kim, Dae Hueng Lee, Jounho Lee, Jihyeon Janel Lee

引用次数: 3