Invention Grant
- Patent Title: Liquid crystal composition and liquid crystal display device
- Patent Title (中): 液晶组成和液晶显示装置
-
Application No.: US13677636Application Date: 2012-11-15
-
Publication No.: US09057017B2Publication Date: 2015-06-16
- Inventor: Manabu Kobayashi , Tetsuji Ishitani , Yuko Kawata , Tomohiro Tamura
- Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Applicant Address: JP Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-ken
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2011-255621 20111123
- Main IPC: C09K19/20
- IPC: C09K19/20 ; C09K19/12 ; C09K19/34 ; C09K19/54 ; C09K19/30 ; C09K19/02 ; C09K19/58

Abstract:
A liquid crystal composition exhibiting a blue phase, which enables higher contrast, and a liquid crystal display device including the liquid crystal composition. The liquid crystal composition contains a chiral agent and liquid crystal containing a compound having three electron-withdrawing groups as end groups of a structure where a plurality of rings including at least one aromatic ring is linked to each other directly or with a linking group laid therebetween. At least one of the three electron-withdrawing groups includes a trifluoromethyl group. The peak of the diffracted wavelength on the longest wavelength side in the reflectance spectrum of the liquid crystal composition is less than or equal to 450 nm, preferably less than or equal to 420 nm. Furthermore, a liquid crystal display device can be provided with the use of the liquid crystal composition.
Public/Granted literature
- US20130126782A1 LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2013-05-23
Information query