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Photo-Induced Dichroic Polarizers and Fabrication Methods Thereof

总结

The invention relates to field of devices and preparations of highly ordered organic molecular layers both on flexible and rigid substrates. In particular, the invention discloses the photo-chemically stable dichroic dye molecules and the device structures, which are suitable for the fabrication of superthin light polarizers for LCDs. Fabrication methods of multi-layers, -axes and -color polarizers, based on photo-aligning technology have also been disclosed.

技术优势

The photo-aligned internal polarizers are cost-effective and enable new LCDs with excellent electro-optical response, including good viewing angles and high brightness. The internal polarizers, based on photo-chemically stable azodye films can be 2 to 3 times cheaper and possess very attractive optical characteristics in comparison with common polarizers, based on plastic PVA-iodine sheets.
Also, existing polarizers for LCDs suffer from expensive and complicated implementation. They are very thick (150-400µ) and possess disadvantages such as light losses at additional reflections and parallax effect, and poor brightness, contrast and viewing angles. The newly developed photo-alignment methods allow fabricating of thin internal polarizers based on photo-chemically stable azodye films and resolved these problems.

技术应用

- Internal polarizers for liquid crystal displays (LCDs) with fine resolution and large information content, e.g. AM-LCDs and LCOS-LCDs

附加资料

Patent Number: US7070913B2
Application Number: US2001853648A
Inventor: Kozenkov, Vladimir Markovich | Yip, Wing Chiu | Chigrinov, Vladimir Grigorievich | Prudnikova, Elena Karlovna | Kwok, Hoi Sing
Priority Date: 14 May 2001
Priority Number: US7070913B2
Application Date: 14 May 2001
Publication Date: 4 Jul 2006
IPC Current: G02B000530
US Class: 430321 | 35948702 | 35948705 | 35948706 | 359491
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Photo-induced dichroic polarizers and fabrication methods thereof
Usefulness: Photo-induced dichroic polarizers and fabrication methods thereof
Summary: For thin light polarizers used in liquid crystal devices.
Novelty: Formation of polarizing material used for liquid crystal devices, comprises forming layer of dichroic material on substrate, and exposing layer to activating light illumination

主要类别

电子

细分类别

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申请日期

14 May 2001

申请号码

US 09/853648

专利信息

US 7070913

ID号码

TTC.PA.156

国家/地区

香港