• 제목/요약/키워드: Physical Display

검색결과 541건 처리시간 0.03초

Cell thickness dependence of liquid crystal parameters

  • Sood, Nitin;Khosla, Samriti;Singh, Darshan;Bawa, S.S.
    • Journal of Information Display
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    • 제13권1호
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    • pp.31-36
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    • 2012
  • Ferroelectric liquid crystal parameters, spontaneous polarization, and transition temperature were studied as a function of cell thickness. These parameters were found to increase with increasing cell thickness, but an exception was observed for the transition temperature in the case of a thin cell. A simple Landau model is presented to interpret the theoretical and experimental observations. The anomalous behavior is attributed to the electroclinic effect and is explained using the Landau model.

웨이브렛 변환을 이용한 선형시스템 분석: 초음파 신호 해석의 응용 (Linear System Analysis Using Wavelets Transform: Application to Ultrasonic Signal Analysis)

  • 주영복
    • 반도체디스플레이기술학회지
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    • 제19권4호
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    • pp.77-83
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    • 2020
  • The Linear system analysis for physical system is very powerful tool for system diagnostic utilizing relationship between the input signal and output signal. This method utilized generally to investigate physical properties of system and the nondestructive test by ultrasonic signals. This method can be explained by linear system theory. In this paper the Continuous Wavelets Transform is utilized to search the relation between the linear system and continuous wavelets transform.

A Study on Virtual Studio Application using Microsoft Hololens

  • Lee, Jaehyun;Kim, Seunghyeon;Kim, Lyounghui;Kang, Jinwook;Lee, Seunghyun;Kwon, Soonchul
    • International journal of advanced smart convergence
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    • 제6권4호
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    • pp.80-87
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    • 2017
  • Mixed Reality (MR) shows a composite image of a virtual object in the real world. It has been applied to various fields by the introduction of head mounted display (HMD) such as Microsoft's Hololens [1-3]. The virtual studio in broadcasting combines the contents created by computer graphics with the actual set to reproduce the 3D image screen. This requires physical space such as a set of chroma keys. It also requires professional knowledge and manpower and costly equipment to post-process the graphics and information for long periods of time. Therefore, in this paper, we aim to study the implementation of virtual studio based on Mixed Reality using Microsoft Hololens. Through the implementation of 'Holo-studio' application, realistic and virtual objects of broadcasting camera viewpoint were acquired at the same time. Using Microsoft's spectator view library, the frame rate is degraded in objects with high polygons (100,000 polygons). The proposed method maintains 60 fps image transmission in high polygon objects. The results of this paper show the possibility of using virtual studio at low cost which does not need separate physical space.

사용자 경험을 위한 플렉시블 디스플레이 인터페이스 디자인 (Flexible display interface design for user experience)

  • 이영주;강재신
    • 디지털융복합연구
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    • 제16권1호
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    • pp.287-292
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    • 2018
  • ICT(Information and Communications Technologies)기술이 중심이 되는 디지털 멀티미디어 환경은 우리의 상상을 현실의 다양한 경험으로 바꾸어주었다. 고도의 정보화 사회에서 요구되는 인간과 기계의 커뮤니케이션 수단으로 탄생한 플렉시블 디스플레이(Flexible display)는 시장을 다변화시키고, 사물인터넷등과의 연계를 통해 새로운 시장을 창출해 내고 있다. 플렉시블 디스플레이의 인터페이스는 입력 또는 출력의 결과로 물리적 형태를 제공할 수 있기 때문에 사용자 중심의 인터페이스 디자인이 무엇보다 중요하다. 이에 본 논문의 연구자는 플렉시블 디스플레이의 사용자 조작에 따른 물리적 변형과 특성에 대해 문헌과 사례조사를 통해 연구했다. 연구 결과 사용자 경험을 위한 플렉시블 디스플레이 인터페이스 디자인 가이드라인을 다음과 같이 제시한다. 첫째, 다양한 형태의 디스플레이 환경에서 사용자에게 필요한 기능을 최대한 제공할 수 있도록 디자인되어야 한다. 둘째, 인터페이스를 활용함에 있어서 다중 사용자의 시야각에 방해 요소는 제거되어야 한다. 셋째 터치와 접촉 이외에 플렉시블 디스플레이에서 가능한 사용자의 모든 조작행위가 고려되어야 한다. 넷째 플렉시블 디스플레이의 가변적 상황에 따라 사용자 경험을 위한 인터페이스디자인도 달라져야 한다. 위 가이드라인은 향후 다양한 플렉시블 디스플레이가 출시된 후, 실증적인 사용자 경험에 대한 분석과 연구에 도움이 될 것으로 기대된다.

Low Power Consumption in Twisted Nematic Mode Using Novel Liquid Crystal Mixture

  • Jeon, Sang-Youn;Song, In-Bum;Hong, Sung-Ho;Lee, Dong-Jin;Choi, Hyun-Chul;Park, Man-Hyo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.337-339
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    • 2008
  • Recently, Note PCs have being widely used due to their features such as good mobility and low power consumption. In order to ensure the current market position, further improvement is required. Especially, the lower operating voltage is essential for the long operating time of Note PCs. For the achievement of lower operating voltage, possible contributions from LC materials side are to lower the viscosity and to increase the dielectric constant without sacrificing the reliability. In order to achieve lower driving voltage, new LC mixtures have been developed, optimizing theirs physical properties.

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The effect of 3-mercapto-5-nitro-benzimidazole (MNB) and poly (methyl methacrylate) (PMMA) treatment sequence organic thin film transistor

  • Park, Jin-Seong;Suh, Min-Chul;Jeong, Jong-Han;Kim, Su-Young;Mo, Yeon-Gon
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.1174-1177
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    • 2006
  • A bottom contact organic thin film transistor (OTFT) is fabricated with an organic double-layered gate insulator (GI) and pentacene. The PMMA and MNB layers are treated on gate insulator and source/drain (S/D, Au) before depositing pentacene to investigate device properties and pentacene growth. The sequence of surface treatment affects a device performance seriously. The ultra-thin PMMA (below 50A) was deposited on organic gate insulator and S/D metal by spin coating method, which showed no deterioration of on-state current (Ion) although bottom contact structure was exploited. We proposed that the reason of no contact resistance (Rc) increase may be due to a wettability difference in between PMMA / Au and PMMA / organic GI. As a result, the device treated by $PMMA\;{\rightarrow}\;MNB$ showed much better Ion behavior than those fabricated by $MNB\;{\rightarrow}\;PMMA$. We will report the important physical and electrical performance difference associated with surface treatment sequence.

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How to Enhance Perceived Usefulness, Ease of Use, and Fit of Wearables: An Exploratory Study about the Physical Attributes of Smart Wristbands and Smartwatches

  • Shim, Soo In;Yu, Heejeong
    • International Journal of Advanced Culture Technology
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    • 제11권4호
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    • pp.302-309
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    • 2023
  • Wearable devices, attached to the human body, track and enhance users' activities, health, and communication. Therefore, considering ergonomic factors in product design is crucial. However, previous research has somewhat overlooked the importance of integrating ergonomic design elements into a broad spectrum of design factors. This study aims to examine the impact of physical attributes inherent in smart wristbands and smartwatches on the perceived functional value, specifically, perceived usefulness, ease of use, and fit. A survey was conducted among 289 US adults who had experience using smart wristbands or smartwatches. The collected data were analyzed using descriptive statistics, factor analysis, Cronbach's alpha, t-test, MANOVA, and regression analysis in SPSS version 29. The results showed that the shape of the front display significantly influenced perceived ease of use, and the product's weight had a substantial impact on both perceived ease of use and fit. Furthermore, distinct technical features on the front display had varied effects on perceived usefulness, ease of use, and fit. Notably, the presence of activity tracking, alarm, and calendar functionalities led to distinct differences in ease of use and fit. Features such as distance tracking, phone call, social media notifications, text messaging, and time display functions showed significant influences on the perception of fit. These findings provide insights into the physical values of smart wristbands and smartwatches as perceived by users.

물리적 감각을 통한 디지털 정보의 조작을 위한 스마트 퍽 시스템 (Smart Puck System for Manipulating Digital Information via Physical Sensation)

  • 조현철;김래현;박세형;한만철
    • 한국HCI학회:학술대회논문집
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    • 한국HCI학회 2007년도 학술대회 1부
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    • pp.857-862
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    • 2007
  • 본 논문에서는 대형 화면의 tabletop display상에서 물리적인 감각을 통해 정보를 직관적으로 조작할 수 있는 스마트 퍽 시스템을 제시한다. 기존의 데스크 탑 PC 환경의 인터페이스는 물리적인 마우스와 디지털 정보의 공간적인 불일치가 생기고 마우스의 물리적인 움직임과 모니터 상 그래픽 커서의 이동을 맵핑하여 간접적으로 정보를 조작하므로, 사용자에게 직관적인 인터페이스를 제공해 주지 못하는 한계가 있다. 스마트 퍽은 물리적인 인터페이스 장치로써 tabletop display상의 디지털 정보를 직접 조작할 수 있고, 스마트 퍽을 끌거나 들어서 옮기거나 회전시키는 등의 물리적인 조작을 통해 사용자에게 디지털 정보와의 직관적인 인터페이스를 제공한다. 또한 대형 화면의 tabletop display는 여러 사용자가 함께 화면에 표시되는 정보를 공유하고 조작하는데 적합하다. 스마트 퍽 시스템은 인간의 아날로그적인 지각과 반응을 통한 물리적인 인터랙션과 가상의 디지털 정보와의 거리를 줄여주는 역할을 한다. 이 시스템은 PDP 기반의 tabletop display 장치와 스마트 퍽, 그리고 tabletop display상의 스마트 퍽의 위치를 추적하는 위치 추적 장치와 스마트 퍽의 입력을 전송 받아 정보를 처리하는 메인 PC로 구성된다. 마지막으로 스마트 퍽 시스템의 인터페이스를 적용한 몇 가지 예시를 보여주고자 한다.

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이동통신 단말기용 SLA(Scanned Linear Array) 적용에 관한 연구 (A study on SLA(Scanned Linear Array) Applications for Mobile Communication Units)

  • 김인회;안원석;문현찬
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1998년도 춘계학술대회 논문집
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    • pp.275-278
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    • 1998
  • In recent years, miniaturization has become the key factor in the development of mobile communication system. Portable communications and computing devices suffer from two conflicting requirements which are device size to be as small as possible and large, high resolution display. These problems can be solved by virtual display. Any display in which the user views an image through an optical system is a virtual display. It provides a display which is high resolution, appears large to the viewer and at the same time occupies little physical space. In this study, handhold units of mobile communication was investigated through use of the SLA(Scanned Linear Array). The basic SLA mechanism comprises a linear array of LED's, a magnifying lens, and a scan mirror. To optimize virtual image, we investigated optical system design and operating condition for each part.

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