Novel polyimide polymer, method of preparing same, and organic insulation layer using same

The present invention relates to a novel polyimide polymer with good insulation property and heat resistance, a method of preparing same, and an organic insulation layer using same. The novel polyimide polymer according to the present invention has excellent emission of blue light at 496 nm, and has good thermal stability even at high temperature since the polyimide polymer has a high glass transition temperature of about 350 o C or more and a thermal decomposition temperature (5 wt%) of 500 o C. Furthermore, the novel polyimide polymer has a low dielectric constant of 3 or less at 1 to 1,000 kHz and thus has excellent electrical insulation properties. Therefore, the novel polyimide polymer according to the present invention can be used as a material for a blue organic light emitting device, and also used as a material for an organic insulation layer for an electronic device such as a light emitting diode (LED) and an organic thin film transistor (OTFT), or a material for a flexible metal clad laminate (FMCL).