PHOTOSENSITIVE POLYIMIDE PRECURSOR COMPOSITION

    公开(公告)号:JPH0643640A

    公开(公告)日:1994-02-18

    申请号:JP25254792

    申请日:1992-09-22

    Applicant: IBM

    Abstract: PURPOSE: To obtain a compsn. increasing resolution and sensitivity while reducing the lass of thickness at the time of development by using a polyimide precursor and a complex cation of a polymerizable functional carboxylic acid compd. having a tert. amino functional group as a reactivity modifier. CONSTITUTION: An unmodified polyimide precursor such as a precursor of polyester imide, polyamide-imide-ester, polyamide-imide or polysiloxane-imide as well as other mixed polyimides is included in a polyimide precursor (polyamic acid) used. A required reactivity modifier is a complex cation of a polymerizable functional carboxylic acid compd. having a tert. amino functional group. This tert. amino functional substance preferably contains a polymerizable part such as an ethylenic unsatd. part and/or plural tert. amino positions.

    CHARGE-TRANSFER SALT AND THESE USAGE

    公开(公告)号:JPH03242626A

    公开(公告)日:1991-10-29

    申请号:JP33085790

    申请日:1990-11-30

    Applicant: IBM

    Abstract: PURPOSE: To obtain a display which changes in colors in a wide range and is bright with small consumption of electric power without any limit of the observation angle by using an electrochemical color-changing cell having a specified inner-molecule charge transfer salt as a color-changing agent for a display panel. CONSTITUTION: This electrochemical color-changing cell consists of a cell 2 at least a part of which is transparent and is filled with a color-changing agent 4 comprising an inner-molecule charge transfer salt of a soln. in a liquid, gel or solid phase. The cell has an indicating electrode 6 and a counter electrode 8 which face each other with a separation zone 12 between these and are connected to a variable DC power supply 10. The material 4 consists of a covalent compd. having at least one radical cationic part which makes a covalent bond with at least one radical anionic part or a material containing carbonyl groups which make conjugates with violene or cyanine part or aromatic part. In the obtd. color-changing cell, changes in colors in a wide range can be obtd. by changing the voltage applied on electrodes 6, 8.

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