• 제목/요약/키워드: Transflective LCDs

검색결과 16건 처리시간 0.026초

Development of the advanced transflective LCDs with high optical performance

  • Lee, Jong-Hwae;Park, Ku-Hyun;Kim, Hyun-Ho;Yoon, Jae-Kyung;Park, Ki-Bok;Shin, Hyun-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1330-1332
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    • 2007
  • We have newly developed transflective LCDs with a specific sub-pixel and the single cell gap structure. In our structure, the overall transmittance and reflectance has become higher than typical transflective LCDs. Furthermore, it can simplify the fabrication process of the transflective LCDs.

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Novel Optical Design of Light-Guide Plates for Transflective Liquid Crystal Displays.

  • Park, Won-Sang;Park, Kwang-Il;Han, Kwan-Young;Yoon, Tae-Hoon;Kim, Jae-Chang
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.880-882
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    • 2002
  • We have proposed a novel optical design technique of light-guide plates(LGPs) which can able to improve the optical efficiency of transflective LCDs. The basic concepts of our design technique are that we make the groove-pattern of LGP pixels resemble the pixel-array-pattern of transflective LCDs in shape and size and make the surface of the groove scatter (front scattering). In simulated and measured results, we ensure that our design of LGP in backlight unit for transflective LCDs can improve the optical efficiency of LCDs.

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Fringe-Field Switching Transflective Liquid Crystal Displays

  • Lim, Young-Jin;Choi, Min-Oh;Lee, Seung-Hee;Song, Jae-Hoon;Jeong, Youn-Hak;Kim, Hyang-Yul;Kim, Seo-Yoon;Lim, Young-Jin
    • Journal of Information Display
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    • 제6권2호
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    • pp.7-11
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    • 2005
  • This paper investgates the transflective liquid crystal displays (LCDs) associated with fringe-field switching (FFS) mode to achieve high image quality. In the past, several cell structures were used to fabricate transflective FFS LCDs. Their structures and characteristics are carefully examined to find their merits and demerits. In addition, we attempt to optimize cell parameters to achieve a single driving circuit.

AFLC Cell을 이용한 반투과 LCD 모드이 새로운 광학적 구조 (A new optical configuration for a transflective display mode using an antiferroelectric liquid crystal cell)

  • 최덕운;김성철;강진우;박원상;심사용
    • 한국광학회지
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    • 제13권2호
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    • pp.162-165
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    • 2002
  • 본 논문에서는 반투과 반사판과 22.5$^{\circ}$의 in-plane tilt각을 가지며 λ/2로 설계된 반강유전성 액정 셀을 이용하여 새로운 형태의 반투과형 LCD모드의 구조를 제시하였다. 제안된 구조에서, 투과형 모드뿐만 아니라 광대역 λ/4 필름을 사용한 반사형 모드에서도 높은 밝기와 명암대비비를 구현해 낼 수 있었다.

Fabrication of Multimode Transflective Liquid Crystal Display using the Photoalignment Technique with a Self-Masking Process

  • Yu, Chang-Jae;Kim, Jin-Yool;Kim, Dong-Woo;Lee, Sin-Doo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.834-838
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    • 2004
  • We report on a simple method of fabricating multimode transflective liquid crystal displays (LCDs) using the photoalignment technique. Using a self-masking process of ultraviolet light by the reflector as a photomask as well as a reflective mirror, the periodic multimode is obtained with no additional fabrication processes. Moreover, variations of the cell gap are not required for such trasflective LCDs

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Novel In-cell Retarder Materials for Transflective IPS-LCDs

  • Sekiguchi, S.;Kishioka, A.;Tanaka, J.;Teramoto, M.;Hamamoto, T.;Tanno, J.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.773-775
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    • 2008
  • We have developed new in-cell retarder materials that provide good transmittance and resolution with the goal of enhancing the properties of transflective IPS-LCDs. We explored various additive surfactants to optimize the applicability of the materials. Moreover, we selected photopolymerization initiators and liquid crystal diacrylate monomers as negative-type photo-patternable retarder materials, seeking to improve resolution and transmittance.

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The optical design method for dual-mode transflective LCD

  • Hsieh, C.H.;Sha, Y.A.;Su, P.J.;Chang, K.H.;Chen, C.H.;Hsiao, C.C.;Shiu, J.W.;Fuh, S.Y.;Cheng, W.Y.;Liao, Y.C.;Yang, J.C.;Lo, K.L.;Lee, D.W.;Lee, K.C.;Chang, Y.P.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.1529-1532
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    • 2006
  • Depending on the optical design method, a novel dual-mode transflective LCD with proper LC material and optical films was developed. The design increased the optical transmittance and the reflectivity of dual-mode transflective LCDs with the proper parameters of cell gap, alignment layer and optical films. These parameters were evaluated by computer simulation. The simulation results also revealed that the transmissive and reflective states presented similar performance in the transflective LCDs.

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수직 배향된 액정 셀과 원 편광판을 이용한 단일 갭 반투과형 액정 디스플레이 연구 (Study on Single Gap Transflective Liquid Crystal Display using the Vertical Alignment Mode and circular polarizer)

  • 김진호;진미형;정은;임영진;이승희
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
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    • pp.401-402
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    • 2008
  • We proposed a single gap transflective liquid crystal display (LCD) using a vertically aligned (VA) liquid crystal cell and circular polarizer. The conventional VA transflective LCDs have problems that there required several compensation films and voltage-dependent transmittance and reflectance curves do not match each other. To solve these problems, we used circular polarizer and optimized the condition of insulator thickness in the transmissive part and reflective part. Also, we used the patterned vertical alignment (PVA) mode for wide viewing angle in transmissive part. Consequently, this device realized transflective LCD with a single cell gap and single gamma curve.

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Novel transflective liquid crystal displays having a single cell gap and a single LC mode combined with an inner-patterned retarder

  • Lee, Sin-Doo;Lim, Yong-Woon;Kim, Jin-Yool;Kim, Dong-Woo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.1519-1524
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    • 2006
  • We report on new transflective liquid crystal displays (LCDs) having a single cell gap and a single LC mode combined with an inner-patterned retarder. In a vertically or planarly aligned configuration the brightness is greatly improved and a single driving scheme can be employed.

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Fringe-Field Switching Transflective Displays

  • Lim, Y.J.;Choi, M.O.;Lee, S.H.;Song, J.H.;Jeong, Y.H.;Kim, H.Y.;Kim, S.Y.;Lim, Y.J.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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    • pp.419-422
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    • 2005
  • We have studied transflective liquid crystal displays (LCDs) associated with fringe-field switching (FFS) mode to achieve high image quality. In the past, several cell structures were used to fabricate transflective FFS liquid crystal display s. Their structures and characteristics are carefully examined to find their merits and cons. Further, optimization of cell parameters to achieve a single driving circuit is performed.

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