公开(公告)号：US4886717A

公开(公告)日：1989-12-12

申请号：US69440

申请日：1987-09-08

申请人： Masafumi Jinno ,  Ichiro Kake ,  Yuichiro Nishina ,  Tsuyoshi Masumoto

发明人： Masafumi Jinno ,  Ichiro Kake ,  Yuichiro Nishina ,  Tsuyoshi Masumoto

IPC分类号： G02F1/17 ,  B32B7/02 ,  C09K9/00 ,  C09K9/02 ,  G02F1/15 ,  G03C1/00 ,  G03C1/725 ,  G03C1/73 ,  G03C1/735 ,  G03C1/76 ,  G03C11/00 ,  G11B7/00 ,  G11B7/0055 ,  G11B7/243 ,  G11B7/249

CPC分类号： G11B7/257 ,  C09K9/02 ,  G02F1/15 ,  G03C1/735 ,  G11B7/243 ,  G11B7/249 ,  Y10S430/163

摘要： A photochromic material comprising a thin film of montmorillonite intercalation compound which has as a guest organic metal complex ions exhibiting a property of accepting electrons in a photo-excited state,a photochromic device comprising; (i) a transparent electrode layer 1, (ii) a transparent layer 2 of polycrystalline n-type semiconductor, (iii) the above-mentioned thin film 3 of montmorillonite intercalation compound, (iv) an electrolytic layer 6 containing an electron-donative reducing agent and (v) an opposed transparent electrode layer 4, anda method for recording and erasing information, comprising the steps of forming the above-mentioned thin film 3 of montmorillonite intercalation compound over the transparent layer 2 of polycrystalline n-type semiconductor, irradiating with light the thin film 3 in contact with the electrolyte 6 containing an electron-donative reducing agent to develop color on the irradiated site of the film and applying a bias voltage to the film being exposed to light to remove the color of the site due to the photosensitizing electrolyte action, whereby an optical memory material which withstands long-term use and repeated use can be obtained.