Preparation method of printing plate for alignment film
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United States of America Patent
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Jul 5, 2016
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Jun 16, 2015
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Feb 3, 2015
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Abstract
The invention relates to the technical field of fabricating a display device, and specifically, to a preparation method of a printing plate for alignment film. The method comprises the following steps of: mixing 40-70 parts by mass of a resin for a printing plate for alignment film, 10-20 parts by mass of an epoxy acrylic resin, 10-20 parts by mass of a photoinitiator, and 20-30 parts by mass of a peroxide initiator, and then coating on a surface of a substrate; exposing with an ultraviolet ray and developing; and subjecting the exposed and developed substrate to a thermal curing process. According to the above technical solution, by adding a peroxide initiator, and adding a thermal curing process after the printing plate for alignment film is exposed during the process for preparing the printing plate for alignment film, the reaction rate of carbon-carbon double bonds is improved, and thereby the resistance of the printing plate for alignment film to a PI liquid having a high polarity is improved and the incidence rate of foreign substance is reduced.
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