The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2009
Filed:
Mar. 15, 2005
Hirotsugu Kikuchi, Fukuoka, JP;
Tisato Kajiyama, Fukuoka, JP;
Toshihiko Nagamura, Fukuoka, JP;
Yoshiaki Hisakado, Minami-Ashigara, JP;
Hirotsugu Kikuchi, Fukuoka, JP;
Tisato Kajiyama, Fukuoka, JP;
Toshihiko Nagamura, Fukuoka, JP;
Yoshiaki Hisakado, Minami-Ashigara, JP;
Japan Science and Technology Agency, Saitama, JP;
Abstract
Presents a liquid crystal display device that does not require a surface orientation treatment, dramatically improves the response rate of dynamic image displays and does not experience light leaks when the display is black, which means to yield a dark field of vision. The liquid crystal display device comprises polymer-stabilized blue phase liquid crystals sandwiched between a pair of clear substrates. The liquid crystal display device obtained using polymer-stabilized blue phase liquid crystals exhibits large double refraction changes when an electrical field is applied in an in-plane direction to the cell substrates. The polymer-stabilized blue phases liquid crystals comprises a low molecular weight liquid crystal that allows a blue phase to appear between cholesteric and isotropic phases and polymer network formed in the low molecular weight liquid crystals. Furthermore, a liquid crystal display device that does not leak light when the display is black (yields a dark field of vision) can be obtained by optimizing the type and amount of a chiral dopant added to the liquid crystals.