Polyimide Precursor, Polyimide Precursor Composition, Polyimide Film, Method for Preparing the Same, and Use Thereof
AssigneesSK Innovation Co., Ltd., SK ie technology Co., Ltd.
InventorsJong Chan Kim, So Young Lee
Life of this patent
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Abstract
Provided are a polyimide precursor, a polyimide precursor solution, a polyimide film, a method for preparing the same, and a use thereof. According to an exemplary embodiment of the present invention, a polyimide film having excellent thermal resistance and satisfying transparency and a low coefficient of linear thermal expansion may be provided, and thus, may be usefully applied in a flexible display field requiring high dimensional stability and the like.
Claims22
A polyimide precursor solution comprising:
- a polyimide precursor derived from a tetracarboxylic acid dianhydride represented by the following Chemical Formula 1:
- wherein
- Q1 is a single bond, —C(═O)—, —C(═O)O—, —C(═O)NH—, —NR′—, —S—, —SO2—, —CH2—, or a combination thereof, wherein R′ is hydrogen or C1-C10 alkyl;
- R1 and R2 are independently of each other a halogen, hydroxy, thiol, nitro, cyano, C1-C10 alkyl, C1-C10 alkoxy, C6-C20 aryl, or a combination thereof, or may be connected to an adjacent substituent to form a ring;
- and
- n and m are independently of each other an integer selected from 0 to 4, and when n and m are an integer of 2 or more, R1 and R2 may be the same as or different from each other.
A polyimide precursor derived from a tetracarboxylic acid dianhydride represented by the following Chemical Formula 1 and a diamine:
- wherein
- Q1 is a single bond, —C(═O)—, —C(═O)O—, —C(═O)NH—, —NR′—, —S—, —SO2—, —CH2—, or a combination thereof, wherein R′ is hydrogen or C1-C10 alkyl;
- R1 and R2 are independently of each other a halogen, hydroxy, thiol, nitro, cyano, C1-C10 alkyl, C1-C10 alkoxy, C6-C20 aryl, or a combination thereof, or may be connected to an adjacent substituent to form a ring;
- and
- n and m are independently of each other an integer selected from 0 to 4, and when n and m are an integer of 2 or more, R1 and R2 may be the same as or different from each other.
A polyimide film comprising a repeating unit represented by the following Chemical Formula b:
- wherein
- Q1 is a single bond, —C(═O)—, —C(═O)O—, —C(═O)NH—, —NR′—, —S—, —SO2—, —CH2—, or a combination thereof, wherein R′ is hydrogen or C1-C10 alkyl;
- R1 and R2 are independently of each other a halogen, hydroxy, thiol, nitro, cyano, C1-C10 alkyl, C1-C10 alkoxy, C6-C20 aryl, or a combination thereof, or may be connected to an adjacent substituent to form a ring;
- R3 is hydrogen, C1-C10 alkyl, or C1-C10 fluoroalkyl;
- p is an integer of 1 or 2;
- and
- n and m are independently of each other an integer selected from 0 to 4, and when n and m are an integer of 2 or more, R1 and R2 may be the same as or different from each other.
Dependencies are inferred from the claim text.