Patent application number | Description | Published |
20110067760 | AROMATIC POLYIMIDE FILM, LAMINATE AND SOLAR CELL - Disclosed is a polyimide film prepared from an aromatic tetracarboxylic acid component and an aromatic diamine component, which has a dimensional change from 25° C. to 500° C. within a range of from −0.3% to +0.6% based on the initial dimension at 25° C. The polyimide film may be used as a substrate for a CIS solar cell. | 03-24-2011 |
20110079277 | POLYIMIDE-METAL LAMINATE AND SOLAR CELL - A polyimide-metal laminate comprising a polyimide film and a metal layer for use as an electrode, which is formed on the side (Side B) of the polyimide film which was in contact with a support when producing a self-supporting film in the production of the polyimide film, is used to produce a CIS solar cell. | 04-07-2011 |
20110084419 | METHOD FOR PRODUCING AROMATIC POLYIMIDE FILM WHEREIN LINEAR EXPANSION COEFFICIENT IN TRANSVERSE DIRECTION IS LOWER THAN LINEAR EXPANSION COEFFICIENT IN MACHINE DIRECTION - An aromatic polyimide film having a TD linear expansion coefficient lower than that MD linear expansion coefficient is produced by an industrially advantageous process which is performed under such conditions that a self-supporting aromatic polyimide precursor film having a solvent content of 25-45 wt. % and an imidation ratio of 5-40% is prepared and stretched in the transverse direction under heating initially at 80-240° C. and the stretched self-supporting aromatic polyimide precursor film is subsequently converted to a self-supporting aromatic polyimide film by heating the precursor film at 350-580° C. | 04-14-2011 |
20120028061 | POLYIMIDE FILM FOR METALLIZING, METHOD FOR PRODUCING SAME, AND METAL-LAMINATED POLYIMIDE FILM - The present invention provides a polyimide film for metallizing, which has an anisotropic thermal expansion coefficient, and comprises a polyimide layer (b) and a polyimide layer (a) on one side or both sides of the polyimide layer (b); wherein
| 02-02-2012 |
20120034455 | POLYIMIDE FILM, METHOD FOR PRODUCING THE SAME, AND METAL-LAMINATED POLYIMIDE FILM - The present invention provides a polyimide film having an anisotropic thermal expansion coefficient, and comprising a polyimide layer (b) and a polyimide layer (a) on one side or both sides of the polyimide layer (b), wherein
| 02-09-2012 |
20120043691 | MULTILAYERED POLYIMIDE FILM - A multilayered polyimide film including a polyimide layer (b), and a pigment-containing polyimide layer (a) stacked on one surface or both surfaces of the polyimide layer (b), wherein the polyimide layer (b) is formed of a polyimide including an aromatic tetracarboxylic acid unit containing a 3,3′,4,4′-biphenyltetracarboxylic acid unit in an amount of 70 to 100 mol %, and an aromatic diamine unit containing a p-phenylenediamine unit in an amount of 70 to 100 mol %. | 02-23-2012 |
20150035199 | METHOD FOR PRODUCING AROMATIC POLYIMIDE FILM WHEREIN LINEAR EXPANSION COEFFICIENT IN TRANSVERSE DIRECTION IS LOWER THAN LINEAR EXPANSION COEFFICIENT IN MACHINE DIRECTION - An aromatic polyimide film having a TD linear expansion coefficient lower than that MD linear expansion coefficient is produced by an industrially advantageous process which is performed under such conditions that a self-supporting aromatic polyimide precursor film having a solvent content 25-45 wt % and an imidation ratio 5-40% is prepared and stretched in the transverse direction under heating initially at 80-240° C. and the stretched self-supporting aromatic polyimide precursor film is subsequently converted to a self-supporting aromatic polyimide film by heating the precursor film at 350-580° C. | 02-05-2015 |
20150091204 | METHOD FOR PRODUCING POLYIMIDE FILM, AND POLYIMIDE FILM - Provided is a method for producing a polyimide film on which a texture having an irregular profile is formed on the surface. | 04-02-2015 |