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Optically Optimized Permanently Bistable Twisted Nematic Liquid Crystal Displays

总结
There are many types of bistable liquid crystal displays (LCDs). Among them, the bistable twisted nematic (BTN) LCD has one of the best optical properties with good contrast and brightness. This display relies on adjusting judiciously the cell thickness to liquid crystal pitch ratio to produce the metastable twist states.

The present invention deals with the design of a permanently bistable twisted nematic liquid crystal display (BTN LCD). Such a display has two stable twist states with no applied voltage. The display can be switched between these two stable states by the application of special voltage pulses. Due to this bistability, no power is needed to maintain the display, once it is formed.
技术优势
1. It is a permanent display that does not require power and is simple to implement
技术应用
- Low power liquid crystal displays (LCDs) such as e-book and e-paper
附加资料
Patent Number: US6784955B2
Application Number: US2001966968A
Inventor: Kwok, Hoi Sing | Guo, Jian Xin
Priority Date: 1 Oct 2001
Priority Number: US6784955B2
Application Date: 1 Oct 2001
Publication Date: 31 Aug 2004
IPC Current: G02F0001139
US Class: 349099 | 349179 | 349180 | 349186
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Optically optimized permanently bistable twisted nematic liquid crystal displays
Usefulness: Optically optimized permanently bistable twisted nematic liquid crystal displays
Summary: As BTN LCD.
Novelty: Bistable twisted nematic liquid crystal display includes liquid crystal cell, input and output polarizers, and chiral dopant added to liquid crystal
主要类别
电子
细分类别
显示
申请日期
1 Oct 2001
申请号码
US 09/966968
专利信息
US 6784955
ID号码
TTC.PA.148
国家/地区
香港

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