Intellectual Property India Publishes Patent Application for Retardation Film, Elliptically Polarizing Plate, And Organic El Display Device

MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202647088345 A) filed by Dai Nippon Printing Co. , Ltd. on July 20, 2026, for Retardation Film, Elliptically Polarizing Plate, And Organic El Display Device.

Inventors include Hiruma Yusuke; Ishii Norio; Yamakawa Toshiyuki; and Nakayama Kentaro.

The application for the patent was published on July 24, 2026, under issue no. 30/2026.

Abstract: This retardation film comprises: a first positive C-type retardation layer; a first positive A-type retardation layer; and a laminate including a second positive C-type retardation layer and a second positive A-type retardation layer, said retardation layers being laminated in this order. The first positive C-ty...