Journal of Display Technology最新文献

{"title":"Design of a Touch Controller for Multitouch Screen System With Touch Prediction and Window Sensing (TPWS) Strategy","authors":"Xiaomin Wei;Bo Li;Tingcun Wei;Jia Wang;Ran Zheng","doi":"10.1109/JDT.2016.2612698","DOIUrl":"https://doi.org/10.1109/JDT.2016.2612698","url":null,"abstract":"The touch prediction and window sensing (TPWS) strategy is an effective approach to realize low-cost and low-power multitouch screen systems, especially for large-sized touch screen panels. The structures of traditional touch controller using charge integrating amplifier is not suitable for the TPWS touch screen systems. This paper presents a new touch controller, which is designed for the TPWS touch screen systems and is emphasized to improve the SNR and reporting rate of system. The differential measurement scheme with a full driving method is proposed to eliminate the influences on the SNR and the reporting rate of system caused by the LCD noise, the charger noise and the signal transmission delay on Indium-Tin Oxide (ITO) electrodes. The designed touch controller is realized in a 0.13 μm 1.8 V/5 V embedded flash CMOS process with the chip size of 2.5 × 2.8 mm\u0000²\u0000. The test results demonstrate that this touch controller supports the TPWS strategy very well and its performances are improved significantly. Comparing with the previous design, the SNR is improved from 25 to 36 dB, and the reporting rate is increased from 83 to 120 Hz.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1638-1646"},"PeriodicalIF":0.0,"publicationDate":"2016-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2612698","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"VLSI Implementation of an Adaptive Block Partition Decision Object-Detection Design for Real-Time 4K2K Video Display","authors":"Shih-Lun Chen;Min-Chun Tuan","doi":"10.1109/JDT.2016.2611617","DOIUrl":"https://doi.org/10.1109/JDT.2016.2611617","url":null,"abstract":"In this paper, an adaptive block partition decision methodology is presented for very large-scale integration (VLSI) implementation of object-detection for real-time ultrahigh-definition (4K2K) resolution video displaying. The proposed adaptive block partition decision algorithm includes a data controller, a gray-level generator, a subblock difference module, and an edge detector. The edge detector is designed for discovering edges in images using an efficient edge-catching technique. An adaptive block partition decision technique was added to enhance the shapes of objects and to decrease the edge distortion effects. Furthermore, a threshold constraint is used to set parameters for different sizes of blocks. A statistic methodology of object detection is also used to determine whether it is necessary to trigger an alert signal or not. The VLSI architecture of the proposed design contains 6.99-K gate counts. Its power consumption is 1.63 mW and its operating frequency is to 374.5 MHz by using a 90-nm CMOS technology. Compared with previous designs, the proposed design not only achieves reduction of more silicon area, but also increases the processing throughput, and accuracy of object-detection for real-time video display.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1570-1580"},"PeriodicalIF":0.0,"publicationDate":"2016-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2611617","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50409446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IEEE Journal of Electron Devices Society","authors":"","doi":"10.1109/JDT.2016.2610058","DOIUrl":"https://doi.org/10.1109/JDT.2016.2610058","url":null,"abstract":"Advertisement, IEEE.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1805-1805"},"PeriodicalIF":0.0,"publicationDate":"2016-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2610058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50305763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interleave Reset Scheme for DMD Projection Display","authors":"Yiqing Liu;Jianle Yang;Xiaoli Gu;Li Sun","doi":"10.1109/JDT.2016.2611243","DOIUrl":"https://doi.org/10.1109/JDT.2016.2611243","url":null,"abstract":"Digital micromirror device projection display is a leading technology in the market, but it is being challenged on 4 k×2 k and 8 k×4 k display in the aspect of a higher maximum transfer data rate (124 G by the global reset method) or more block visual artifacts (by the phase reset method). A new method named interleaved reset scheme is proposed to meet this kind of demand. The interleaved reset scheme divides the video frame into several individual groups and reorders all the line sequences in a proper way, the needed maximum transferring data rate is reduced significantly, and the block visual artifact is also reduced.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1752-1756"},"PeriodicalIF":0.0,"publicationDate":"2016-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2611243","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50305997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comfort Evaluation of 3D Movies Based on Parallax and Motion","authors":"Feng Tian;Haojun Xu;Xiang Feng;J. Alfredo Sánchez;Pan Wang;Shawn Tilling","doi":"10.1109/JDT.2016.2610976","DOIUrl":"https://doi.org/10.1109/JDT.2016.2610976","url":null,"abstract":"The intensity of feeling and comfort are two contrasting aspects of 3D movies. This paper studies 3D comfort according to crosstalk, basic parallax, space motion, and depth of field based on pixels. A method for calculating 3D motion based on the XYZ axes is presented, and a pixel-based evaluation model of 3D comfort is established with parallax, motion, and other indexes. In order to support the production and evaluation process of 3D films, a 3D comfort evaluation tool is designed according to time series. As demonstrated experimentally, basic parallax, depth of field, and average crosstalk have certain impact on the entire 3D comfort, while space motion has a relatively salient effect. When applying our method, a steady control on 3D comfort is found in high-quality 3D films: About 92% of comfort is within the range of 1-3.5 points for Transformers: Age of Extinction (USA), whereas about 74% of comfort is within the range of 1-3.5 points for The Monkey King (China). Large depth of field for slow moving lens and small depth of field for fast moving lens were used in Avatar and Transformers, and these 3D art rules are not followed closely in The Monkey King. As a basic tool for 3D film production, our proposed method can be applied in creating, shooting, producing, and monitoring for a 3D film.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1695-1705"},"PeriodicalIF":0.0,"publicationDate":"2016-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2610976","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental Thermal Cycle Analysis and Testing of Elastomeric Mounted Objective Lens Cell for Head-Up Display System","authors":"Shravan Kumar RR;Rakesh Kumar;T. K. Jindal","doi":"10.1109/JDT.2016.2609890","DOIUrl":"https://doi.org/10.1109/JDT.2016.2609890","url":null,"abstract":"This paper presents the determination of principal stresses, strains, and shear stresses due to thermal cycle load experimentally as well as using Finite Element Analysis (FEA) in the objective lens cell of Head-Up Display for aircraft application. The principal stresses and strains in the objective cell are obtained by adopting two methods namely a highly correlated FEA and strain gauge technique. The stress and strains results obtained from aforesaid both the methods were analyzed and found satisfactory. The results obtained were validated with allowable stress tolerance limits of the glass laid down by some researchers and rule of thumb in optics.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1764-1769"},"PeriodicalIF":0.0,"publicationDate":"2016-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2609890","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50305759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Adaptive Local Dimming Backlight Control Chip Design Based on Gaussian Distribution for Liquid Crystal Displays","authors":"Shih-Lun Chen;Hsin-Ju Tsai","doi":"10.1109/JDT.2016.2609499","DOIUrl":"https://doi.org/10.1109/JDT.2016.2609499","url":null,"abstract":"In this paper, a novel hardware-oriented adaptive local dimming backlight control algorithm is proposed for very large-scale integration implementation. The proposed algorithm includes a novel dimming algorithm to save energy of the liquid crystal display (LCD) backlight module and a novel contrast enhancement algorithm to compensate the dimming of brightness in displaying images. In order to improve the power-saving rates and image quality, a block-based model and a Gaussian distribution model were added. After obtaining a clipped point by the Gaussian distribution model, a pixel compensator was used to compensate the brightness value of each pixel to satisfy the human vision. In the meantime, a power width modulation module produced power control signal for the LCD backlight module. To meet the performance standards for displaying video in real time, the proposed algorithm was implemented by an eight-stage pipelined architecture. In addition, a new color-space YEF transform composed of integer adders and shifters was used to realize the grayscale converter to replace floating point multipliers. Moreover, the high-complexity operations, such as square root, multiplication, and division, required for the Gaussian distribution model were simplified by using a lookup table technique, which could reduce the hardware cost of the proposed design efficiently. This design was fabricated by a TSMC 0.18-μm CMOS process, and the chip area is 630 105 μm\u0000²\u0000. Compared with previous local dimming backlight control algorithms, this work improved the average peak signal to noise ratio by 6.89 dB and saved 7.61% more backlight power consumption than previous studies.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1494-1505"},"PeriodicalIF":0.0,"publicationDate":"2016-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2609499","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50306579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Directional Backlight 3D Display System With Wide-Dynamic-Range View Zone, High Brightness and Switchable 2D/3D","authors":"Lingli Zhan;Minggao Li;Bin Xu;Jingjing Hu;Yuanqing Wang;Liqun Cao;Lei Han;Biye Zhou","doi":"10.1109/JDT.2016.2609198","DOIUrl":"https://doi.org/10.1109/JDT.2016.2609198","url":null,"abstract":"In this paper, we present an autostereoscopic display system with wide-dynamic-range view zone, high brightness and switchable 2D/3D. For this purpose, we propose a novel directional backlight system inspired by an optical splitter. Combined with eye tracking technique and LED-lit matrix, we expand the viewing zone and achieve 2D/3D switchable properties. And the design of direct illumination-type LED backlight improves the brightness significantly. The mathematical analysis and logic principle of the system is provided in this paper. And also, we build an autostereoscopic display prototype by the directional backlight system, and demonstrate experimentally that our system gives the viewer freedom both of viewing position and viewing environment with images of high quality.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 12","pages":"1710-1714"},"PeriodicalIF":0.0,"publicationDate":"2016-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2609198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50305764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dysprosium-Doped Strontium Magnesium Silicate White Light Emitting Phosphor Prepared by Solid State Reaction Method","authors":"Ishwar Prasad Sahu;D. P. Bisen;Raunak Kumar Tamrakar","doi":"10.1109/JDT.2016.2608382","DOIUrl":"https://doi.org/10.1109/JDT.2016.2608382","url":null,"abstract":"In this paper, we report the dysprosium-doped strontium magnesium silicate, namely, SrMgSi\u0000₂\u0000O\u0000₆\u0000:xDy\u0000³⁺\u0000 (x = 1.0, 1.5, 2.0, 2.5, and 3.0 mol%) phosphors prepared by the traditional high temperature solid state reaction method. The prepared phosphors were characterized by X-ray diffraction, field emission scanning electron microscope coupled with the energy dispersive X-ray spectroscopy (EDS) and Fourier transform infrared technique. The crystal structures of sintered phosphors were an akermanite type which belongs to the tetragonal crystallography with space group P4̅2\u0000₁\u0000 m. The chemical composition of the sintered phosphor SrMgSi\u0000₂\u0000O\u0000₆\u0000 :Dy\u0000³⁺\u0000 (2%) was confirmed by the EDS. Under the ultraviolet excitation, the emission spectra of SrMgSi\u0000₂\u0000O\u0000₆\u0000 :xDy\u0000³⁺\u0000 (x = 1.0, 1.5, 2.0, 2.5, and 3.0 mol%) phosphors were composed of broadband with the characteristic emission of Dy\u0000³⁺\u0000 ions peaking at 475 nm (blue) and 574 nm (yellow), originating from the transitions of \u0000⁴\u0000F\u0000_9/2\u0000 → \u0000⁶\u0000H\u0000_j\u0000 state (where j = 15/2 and 13/2). The combination of these two emissions constituted white light emission as indicated on the Commission Internationale de l'Eclairage chromaticity diagram. The possible mechanism of the prepared white light emitting SrMgSi\u0000₂\u0000O\u0000₆\u0000 :xDy\u0000³⁺\u0000 (x = 1.0, 1.5, 2.0, 2.5, and 3.0 mol%) phosphors were also investigated. Investigation on decay property show that the prepared phosphor held fast and slow decay process. In order to investigate the suitability of the samples as white color light sources for industrial uses, correlated color temperature (CCT) and color rendering index (CRI) were calculated. Values of CCT and CRI were found, well within the defined acceptable range.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 11","pages":"1478-1487"},"PeriodicalIF":0.0,"publicationDate":"2016-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2608382","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50281342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electric Hum Signal Readout Circuit for Touch Screen Panel Applications","authors":"Pei-Yi Lai Lee;Chih-Wen Lu;Chih-Cheng Hsieh;Tsin-Yuan Chang;Jenny Yi-Chun Liu;Hsin-Chin Liang;Hsiang-Ning Wu","doi":"10.1109/JDT.2016.2607340","DOIUrl":"https://doi.org/10.1109/JDT.2016.2607340","url":null,"abstract":"This paper presents a new touch sensing mechanism that detects different signals on a touch panel generated by an electric field formed from household power. Without requiring complicated transmitter and receiver circuits, a 16-channel front-end sensor and shared readout circuits are proposed to realize the new touch-sensing mechanism. This touch-sensing technique can be applied on the appliance control panel to detect the operation control. The signal readout circuit is implemented in a 0.18-μm CMOS process, which occupied an area of 2.64 mm\u0000²\u0000. The proposed sensing technique achieves 46.5-dB signal-to-noise ratios with finger touch. With battery power supply of 1.8 V and 2.5 V, total power consumption of the proposed readout circuit is measured as just 2 mW.","PeriodicalId":15588,"journal":{"name":"Journal of Display Technology","volume":"12 11","pages":"1444-1450"},"PeriodicalIF":0.0,"publicationDate":"2016-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/JDT.2016.2607340","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50399948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}