公开(公告)号：JP2000321580A

公开(公告)日：2000-11-24

申请号：JP12292399

申请日：1999-04-28

Applicant: IBM

Inventor： KOSEKI TOSHIHIKO ,  YAMASHITA HIDEFUMI ,  HASUMI TARO ,  MOMOI YUICHI ,  SEIHIKARI YOSHINORI ,  SHIROUCHI TOMOHITO

IPC: G02F1/1333 ,  G02F1/1339

Abstract: PROBLEM TO BE SOLVED: To form a spherical spacer at a specified position, to suppress production of foams at a low temperature and to obtain a liquid crystal display device equipped with the spacer having resistance to local load, by controlling the hardness (DH) of the spacer consisting of a photosensitive resin for regulating the cell gap between substrates to a specified range. SOLUTION: The device comprises an array substrate 12 and a color filter substrate 14 disposed facing each other, a spacer 18 consisting of a photosensitive resin to regulate the cell gap 16 between the substrates, and a liquid crystal 20. As for the spacer 18, a photosensitive resin satisfying the conditions that the hardness (DH) obtained by the formula of DH=K×Pmax/hmax2 ranges 26 to 30 is used. In the formula, DH is the hardness (kgf/mm2), Pmax is the maximum load (kgf), hmax is the maximum displacement (mm) as the sum of the elastic deformation and plastic deformation, and K is a constant intrinsic to the device obtd. from the displacement of the indenter.

公开(公告)号：JP2004018662A

公开(公告)日：2004-01-22

申请号：JP2002175040

申请日：2002-06-14

Applicant: International Display Technology Kk ,  Internatl Business Mach Corp ,  インターナショナル ディスプレイ テクノロジー株式会社 ,  インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Maschines Corporation

Inventor： MOMOI YUICHI ,  YAMAMICHI JUNTA

IPC: G02F1/13 ,  C09K19/00 ,  C09K19/54

CPC classification number: C09K19/542 ,  C09K19/00 ,  Y10T428/10

Abstract: PROBLEM TO BE SOLVED: To provide a liquid crystal material having a high voltage holding capacity, in which an ion is controlled to move between electrodes when an electric field is applied to the liquid crystal material. SOLUTION: A conduction inhibitor comprising an epoxy type resin or the like is included in the liquid crystal material. Specifically, the inhibitor is formed from a bisphenol F type epoxy resin, and a proportion to be included is made to be 0.1-10 wt.%. By means of such inclusion of the inhibitor, electrical conduction caused by an ion created by an impurity or the like present in the material can be controlled. The high voltage holding capacity can be retained when a liquid crystal display cell and a liquid crystal display are formed by using the material. COPYRIGHT: (C)2004,JPO