POLYAMIC ACID SOLUTION, IMIDIZATION FILM, AND DISPLAY DEVICE
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United States of America Patent
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Oct 8, 2015
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Dec 17, 2013
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Dec 26, 2012
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Abstract
The present invention relates to a polyamic acid solution, an imidization film, and a display device, and discloses a polyamic acid solution which is a reaction product of dianhydrides and aromatic diamines and has a thermal expansion coefficient of 10 ppm/° C. or less in a temperature range of 50 to 540° C., after forming an imidization film, an imidization film thereof, and a display device including the same. The present invention may provide a display having excellent thermal stability, proper flexibility, and mechanical strength by applying the polyamic acid solution.
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