• 제목/요약/키워드: LCD 디스플레이

검색결과 1,268건 처리시간 0.293초

Motion Blur Reduction in LCDs

  • Hong, Sun-Kwang;Oh, Jae-Ho;Park, Po-Yun;Park, Jin-Hyeok
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
    • /
    • pp.1108-1110
    • /
    • 2004
  • LCDs show motion image blur due to slow response time and a hold-type driving method. In this paper, we investigate motion blur phenomena and quantitatively show that the motion blur can be significantly reduced through a combination of dynamic capacitance compensation (DCC) and black data insertion.

  • PDF

Analysis of CCFL blackening in edge-lit LCD modules

  • Lee, Yong-Woo;Seo, Dong-Jin;Noh, Cheol-Yong;Choi, Seong-Sik
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
    • /
    • pp.803-805
    • /
    • 2008
  • For the life estimation of CCFLs in edge-lit LCD modules has been required CCFL blackening test, which is executed in the state of low current and long-time operation under the high temperature condition. We investigated the reason why CCFL blackening happened more easily in the above test conditions and the way how mechanical parts had influence upon CCFL blackening in the edge-lit LCD modules.

  • PDF

Dynamic Surface In-plane Switching Property using the Ferroelectric Liquid Crystal on the surface

  • Choi, Sang-Ho;Choi, Su-Seok;Shin, Hyun-Ho;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
    • /
    • pp.868-871
    • /
    • 2006
  • In-plane switching characteristics of PI rubbed ITO sandwich cell with low molecule FLC (ferroelectric liquid crystal) surface was investigated. FLC on the surface is governed by the applying frequency and surface condition. By controlling the Ps (spontaneous polarization) direction of dual FLC surfaces, switching characteristics are improved without change of cell structure.

  • PDF

Finite-element modeling and analysis of time-dependent thermomechanical distortion of optical sheets in a LCD module

  • Lee, Jae-Won;Hwang, Hak-Mo;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
    • /
    • pp.1436-1441
    • /
    • 2006
  • Each type of optical sheets in a LCD module experiences a characteristic behavior for thermal loading and unloading. During thermal cycling, a polymeric behavior is reversible and recyclable, depending on a material stiffness critically affected by temperature and time. Some critical issues on temperature- and time-dependent themomechanical deformation of the polymeric sheet are addressed by finite-element thermal results, followed by structural simulation results in this study.

  • PDF

Designing low cost liquid crystal mode for Transflective LCD

  • Baek, Heume-Il;Ham, Mi-Sook;Ha, Kyung-Su;Kim, Dong-Guk;Shin, Hyun-Ho
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
    • /
    • pp.556-559
    • /
    • 2002
  • We designed a low cost optical structure of transflective LCD that uses only a half number of retardation films compared to general active matrix transflective LCD. The prototype embodied by this design shows reasonable reflective and transmissive performance. This design would provide us thinner, lighter and cheaper product due to its reduced retardation film structure.

  • PDF

액정디스플레이 기술의 발전전망 (An outlook of liquid crystal display technology)

  • 장진
    • E2M - 전기 전자와 첨단 소재
    • /
    • 제9권7호
    • /
    • pp.745-754
    • /
    • 1996
  • 이글에서는 다음의 내용을 다루었다. 1. LCD의 기능 성능 향상, (1) CRT와 TFT-LCD의 기능, 성능 비교, (2) TFT-LCD의 기능, 성능향상을 위한 과제 2. TFT-LCD의 가격 및 수급현황 3. Poly-Si TFT-LCD전망 4. 투사형 TFT-LCD 5. 반사형 LCD 6. 필림형 LCD 7. 고분자 분산형 액정(PDLC)

  • PDF

TFT Technology for Flexible Display Applications

  • Kim, Chang-Dong;Kang, In-Byeong;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
    • /
    • pp.1767-1770
    • /
    • 2007
  • The key development issues in the flexible displays are TFT backplane technology for their various applications, which requires competitive device performance as well as its low temperature process. In this paper, with shortly reviewing recent flexible display development status, we describe technical trends of low-temperature a-Si TFTs. Our TFTs show good device characteristics enough to apply LCD and electrophoretic display.

  • PDF

High-visibility 2D/3D LCD with HDDP Arrangement and its Optical Characterization Methods

  • Uehara, Shin-Ichi;Hiroya, Tsutomu;Kusanagi, Hidenori;Shigemura, Kouji;Asada, Hideki
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
    • /
    • pp.147-150
    • /
    • 2008
  • We have developed a 3.1-inch diagonal 2D/3D LCD with a novel pixel arrangement, called HDDP (Horizontally Double-Density Pixels), for high-quality 3D images. We have improved 3D visibility by broadening the 3D viewing zone where high-quality images can be seen, and we propose optical characterization methods which can evaluate the high-visibility autostereoscopic displays correctly.

  • PDF

Modified Half-V Switching Ferroelectric Liquid Crystal Displays (FLCDs) for Quasi Impulsive Driving

  • Choi, Suk-Won;Kim, Hong-Chul;Yoon, Sung-Hoe
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
    • /
    • pp.571-574
    • /
    • 2002
  • We propose modified concept that enables LCDs quasi-impulsive operations, and demonstrated a prototype AM-LCD that is suitable for displaying moving pictures combined with '2-Domain Half-V shaped switching mode' FLCD.

  • PDF

Acceptable Luminance Levels of a LCD TV Based on Glare of Human Visual System

  • Kim, Ki-Duk;Ahn, Ji-Young;Yoon, Jae-Kyung;Shin, Hyun-Ho;Chung, In-Jae
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
    • /
    • pp.125-128
    • /
    • 2005
  • The visual perception tests were conducted to determine limits of luminance of a LCD TV from a viewpoint of glare. The results showed that people, who watch TV in their living room, perceive glare above $410\;cd/m^2$ at full window and $590\;cd/m^2$ at 1/25 window.

  • PDF