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    ELECTROMOTIVE DISPLAY DEVICE
    2.
    发明专利
    ELECTROMOTIVE DISPLAY DEVICE 失效

    公开(公告)号：JPH08221012A

    公开(公告)日：1996-08-30

    申请号：JP33075395

    申请日：1995-12-19

    Applicant: IBM

    Inventor： JIYOZEFU GUROOBAA GOODON SEKAN ,  MAAKU UITSUTONII HAATO ,  ANDORIYUU MARIAN HOMORA ,  DENISU RICHIYAADO MATSUKIIN ,  ROORENSU BURAIAN SHIEIN ,  BAATON AREN SUMISU ,  SARII AN SUWANSON

    IPC: G09F9/37 ,  G02F1/167

    Abstract: PROBLEM TO BE SOLVED: To provide an improved electromotive display device having a low power consumption quantity and a good image contrast by providing a counter electrode and a panel having a light reflecting or light absorbing surface on a light transmitting front window and a collective electrode, and providing a plurality of cells containing a light transmitting liquid suspension of charged pigment particles. SOLUTION: Multiple cells containing a light transmitting liquid suspension of charged pigment particles are provided. Each cell contains a front transmitting counter electrode 2 (serving as a front window), a horizontal back panel 4 having a light refrective or light absorptive surface 6 facing the electrode 2 and a collective electrode 8 arranged apart from the front electrode 2 in the cell and becoming no obstacle. A suspension 10 of a colloidal pigment is arranged in the space between the front electrode 2 and a back panel 4. The back panel 4 covers almost all the horizontal (lateral) region of the cell. Pigment electrons are collected on the non-obstructive collective electrode 8 in the preferable state, and the ambient light is reflected on the back panel 4 and can be returned to an observer. The cell is operated with no continuous artificial electric light source (e.g. a back-light).

    PHOTOSENSITIVE POLYAMIC ALKYL ESTER COMPOSITION AND USING METHOD THEREOF
    4.
    发明专利
    PHOTOSENSITIVE POLYAMIC ALKYL ESTER COMPOSITION AND USING METHOD THEREOF 失效

    公开(公告)号：JPH05197148A

    公开(公告)日：1993-08-06

    申请号：JP20638692

    申请日：1992-08-03

    Applicant: IBM

    Inventor： JIEFURII UIRIAMU RABADEII ,  DENISU RICHIYAADO MATSUKIIN ,  UIRII FUORUKUSEN ,  GUREGORII MAIKERU UOORAFU

    IPC: G03F7/004 ,  G03F7/038 ,  G03F7/039 ,  G03F7/38 ,  H01L21/027

    Abstract: PURPOSE: To form a polylmide image on a substrate by incorporating a polyamic alkyl ester compsn. into a photosensitive negative or positive gradation compsn. CONSTITUTION: When a photosensitive negative gradation compsn. containing a polyamic alkylester and photosensitive base-producing agent is exposed, the photosensitive base-producing agent in the exposed area produces radical base. This acts as a catalyst to imidize the polyamic alkylester into insoluble partially imidized polyimide. When a photosensitive positive gradation compsn. containing polyamlc alkylester base or base precursor and a photosensitive acid-producing agent is exposed, the photosensitive acid producing agent in the positive gradation compsn. produces acid, which traps base in the exposed area of the film. By successively heating the positive gradation compsn. at low temp., partial imidization in the nonexposed area of the film is caused by the base catalyst. The positive gradation compsn. is developed by using a proper solvent.

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