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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 蔡永傑 | zh_TW |
dc.contributor.advisor | Wing-Kit Choi | en |
dc.contributor.author | 王子權 | zh_TW |
dc.contributor.author | Tzu-Chuan Wang | en |
dc.date.accessioned | 2023-10-03T17:24:02Z | - |
dc.date.available | 2023-11-09 | - |
dc.date.copyright | 2023-10-03 | - |
dc.date.issued | 2023 | - |
dc.date.submitted | 2023-08-09 | - |
dc.identifier.citation | Yeh, Pochi, and Claire. Gu. Optics of Liquid Crystal Displays / Pochi Yeh, Claire Gu. New York: Wiley, 1999.
Bhowmik, Achintya K., Zili. Li, and Philip J. Bos. Mobile Displays : Technology and Applications / Edited by Achintya K. Bhowmik, Zili Li, Philip J. Bos. Chichester, England ;: J. Wiley & Sons, 2008. Chigrinov, V. G. (Vladimir G.). Liquid Crystal Devices : Physics and Applications / Vladimir G. Chigrinov. Boston: Artech House, 1999. Takatoh, Kohki. Alignment Technologies and Applications of Liquid Crystal Devices / Kohki Takatoh ... [et Al.]. London ;: Taylor & Francis, 2005. Pasechnik, Sergey V. et al. Liquid Crystals : Viscous and Elastic Properties / Sergey V. Pasechnik, Vladimir G. Chigrinov, and Dina V. Shmeliova. Weinheim: Wiley-VCH, 2009. Wu, Shin-Tson., and Deng-Ke. Yang. Reflective Liquid Crystal Displays / Shin-Tson Wu, Deng-Ke Yang. Chichester ;: Wiley, 2001. WU, Shin-Tson. “Birefringence dispersions of liquid crystals.” Physical Review A, 33.2: 1270, 1986. SCHADT, Martin; HELFRICH, Wolfgang. “Voltage‐dependent optical activity of a twisted nematic liquid crystal.” Applied Physics Letters, 18.4: 127-128, 1971. CHOI, Wing K.; WU, Shin-Tson. “Fast Response Liquid Crystal Mode.” UNIVERSITY OF CENTRAL FLORIDA ORLANDO, No. 7369204, 2011. CHOI, Wing-Kit, et al. “Effects of electrode structure and dielectric anisotropy on the performance of VA-FFS LC mode.” Optics express, 27.23: 34343-34358, 1990. KIM, Sang Gyun, et al. “Stabilization of the liquid crystal director in the patterned vertical alignment mode through formation of pretilt angle by reactive mesogen.” Applied physics letters, 90.26: 261910, 2007. LEE, You-Jin, et al. “Surface-controlled patterned vertical alignment mode with reactive mesogen.” Optics express, 17.12: 10298-10303, 2009. Tae-Hoon Choi, Yeongyu Choi, Jae-Hyeon Woo, Seung-Won Oh, and Tae-Hoon Yoon, Electro-optical characteristics of an in-plane-switching liquid crystal cell with zero rubbing angle: dependence on the electrode structure, Opt. Express 24, pp.15987-15996, 2016. OH‐E, Masahito; KONDO, Katsumi. “Response mechanism of nematic liquid crystals using the in‐plane switching mode.” Applied physics letters, 69.5: 623-625, 1996. OH‐E, Masahito; KONDO, Katsumi. “Electro‐optical characteristics and switching behavior of the in‐plane switching mode.” Applied physics letters, 67.26: 3895-3897, 1995. LEE, S. H.; LEE, S. L.; KIM, H. Y. “Electro-optic characteristics and switching principle of a nematic liquid crystal cell controlled by fringe-field switching.” Applied physics letters, 73.20: 2881-2883, 1998. Y. Chen, Z. Luo, F. Peng, and S.T. Wu, Fringe-Field Switching with a Negative Dielectric Anisotropy Liquid Crystal, J. Display Technol. 9, pp.74-77, 2013. JIAO, Meizi, et al. “Submillisecond response nematic liquid crystal modulators using dual fringe field switching in a vertically aligned cell.” Applied Physics Letters, 92.11: 111101, 2008. HONG, Seung Ho, et al. “Electro-optic characteristic of fringe-field switching mode depending on rubbing direction.” Japanese Journal of Applied Physics, 39.6A: L527, 2000. 朱崴豪。改善垂直配向邊緣場效驅動液晶顯示器的虛擬牆穩定性之研究。國立台灣大學光電工程學研究所。2021。 楊承祐。垂直配向邊緣場效驅動液晶顯示器的反應時間之研究。國立台灣大學光電工程學研究所。2022。 | - |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/90737 | - |
dc.description.abstract | 液晶顯示器作為現今廣泛使用及成熟的產品,具有多元的應用領域,而FFS(fringe-field switching)驅動方式有著廣視角、高亮度等多項優勢。因此先前研究中針對正型液晶驅動之2D VAFFS、負型液晶驅動之3D VAFFS有過深入的探討,同時也發現FFS中向錯(disclination)也就是虛擬牆對於加快反應時間的影響,故嘗試以電極結構設計方式使虛擬牆於長時間信號輸入下仍然存在,並已有成效。
本論文中結合先前研究之結論,針對孔洞結構進行分析,探討孔洞數量與形狀對於反應時間、穩定度之關係。後續討論中因對稱電極自身具有高穩定性,因此提出對稱電極結構概念,並分析對稱圖案之形狀優劣,同時以多種液晶進行模擬,來了解此結構之泛用性。 為改善液晶之水平連續橫向力,我們結合過去結論提出含有孔洞、旋轉45度之十字型對程圖案電極結構,發現此結構在不同尺寸面積下都具有良好的穩定度、高穿透率以及快速的反應時間,且同時針對多種液晶進行模擬以獲得更全面之結論。 | zh_TW |
dc.description.abstract | As a widely used and mature product nowadays, liquid crystal displays have multiple application fields. The traditional FFS (Fringe-Field Switching) driving method has many advantages, such as wide viewing angle and high brightness. In recent years, research has delved deeply into studies on e.g. 2D VAFFS which employs positive liquid crystals and 3D VAFFS that employs positive or negative liquid crystals. It has been found that disclination, also known as virtual wall, in VAFFS is a key factor that helps speed up the response time. It has also been found that new designs of the VAFFS electrode structure may help make virtual wall exist more continuously (i.e. more stable) under long-term signal input. This approach has been quite effective so far.
In this thesis, based on the conclusions of previous studies, we aim to focus on analyzing hole-pattern structure. We also discuss the effects of different shapes of hole and number of holes on the effects of response time and stability. We also found that high stability of virtual wall tends to exist around symmetrical electrode patterns. We thus proposed the concept of using symmetrical electrode structure to stabilize the virtual walls. We analyzed the advantages and disadvantages of different shapes of symmetrical electrode pattern. In order to cancel the horizontal continuous lateral force of the liquid crystal, we combined the previous results and conclusions and proposed a new cross-shaped symmetrical electrode structure that contained holes and the structure was rotated by 45 degrees. It is found that this new structure can have good stability, high transmittance and fast response time under different sizes and pixel areas. We analyzed the results using different kinds of negative-type liquid crystals in order to make sure that the conclusion can be consistent even in different conditions. | en |
dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2023-10-03T17:24:02Z No. of bitstreams: 0 | en |
dc.description.provenance | Made available in DSpace on 2023-10-03T17:24:02Z (GMT). No. of bitstreams: 0 | en |
dc.description.tableofcontents | 口試委員審定書 I
誌謝 II 中文摘要 III ABSTRACT IV 目 錄 VI 圖目錄 IX 表目錄 XII 第一章 簡介 1 1.1 液晶簡介 1 1.1.1 液晶相態及彈性參數 1 1.1.2 液晶的介電異向性與雙折射性 2 1.2 液晶顯示器技術簡介 5 第二章 文獻回顧與研究動機 8 2.1 二維垂直配向邊緣場效驅動 8 2.2 三維垂直配向邊緣場效驅動 9 2.3 研究動機 13 2.4 孔洞電極設計與菱形電極設計之操作機制 14 2.4.1 孔洞電極設計 14 2.4.2 菱形電極設計 16 第三章 模擬軟體介紹與參數設定 17 3.1 TECHWIZ LCD 3D軟體介紹 17 3.2 參數設定 18 3.3 TECHWIZ LAYOUT 20 3.4 網格設定 21 3.5 電壓設定 22 3.5.1 V-T圖 22 3.5.2 t-T圖 23 3.6 液晶配向參數 24 3.7光學分析設定 25 第四章 結果與討論 26 4.1 孔洞電極數量與樣式 26 4.1.1 圓形孔洞電極設計與數量探討 27 4.1.2 對角虛擬牆電極形狀探討 31 4.1.3 比較 36 4.2 新式電極結構--對稱型電極結構 43 4.2.1 原理與機制 43 4.2.2 不同電極間隔、電極寬度組合之穩定度與穿透率分析 44 4.2.3 操作電壓與反應時間 51 4.2.4 對稱型電極結構優劣比較 55 4.2.5 MLC-6608與UCF-N6應用於Cross pattern 56 4.3 45。十字型對稱圖案井字電極 62 4.3.1 原理與機制 62 4.3.2 應用於多種尺寸大小與液晶之穩定度與穿透率分析 65 4.3.3 應用於多種尺寸大小與液晶之操作電壓與反應時間 68 4.3.4 添加孔洞結構 70 第五章 結論與未來展望 73 參考資料 75 附錄A 78 附錄B 80 附錄C 81 附錄D 82 附錄E 83 | - |
dc.language.iso | zh_TW | - |
dc.title | 運用新型電極結構提升負型垂直配向邊緣場效驅動液晶之虛擬牆穩定度 | zh_TW |
dc.title | Enhancing Stability Of Virtual Wall For Negative Vertically-Aligned Fringe Field Switching Mode Liquid Crystal By Using Novel Electrode Pattern | en |
dc.type | Thesis | - |
dc.date.schoolyear | 111-2 | - |
dc.description.degree | 碩士 | - |
dc.contributor.oralexamcommittee | 林晃巖;黃定洧;黃念祖 | zh_TW |
dc.contributor.oralexamcommittee | Hoang-Yan Lin;Ding-Wei Huang;Nien-Tsu Huang | en |
dc.subject.keyword | 虛擬牆,三維電極結構,快速反應時間,穩定度,垂直配向邊緣場效驅動, | zh_TW |
dc.subject.keyword | virtual walls,three-dimensional electrode structure,fast response time,stability,vertically aligned fringe field switching, | en |
dc.relation.page | 83 | - |
dc.identifier.doi | 10.6342/NTU202303547 | - |
dc.rights.note | 未授權 | - |
dc.date.accepted | 2023-08-10 | - |
dc.contributor.author-college | 電機資訊學院 | - |
dc.contributor.author-dept | 光電工程學研究所 | - |
顯示於系所單位: | 光電工程學研究所 |
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