MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202527120712 A) filed by Dispelix Oy on December 02, 2025, for Display Structure.
Inventors include Ventola, Kalle; and Olkkonen, Juuso.
The application for the patent was published on September 25, 2026, under issue no. 39/2026.
Abstract: According to an embodiment, a display structure comprises: a waveguide (101); an in-coupling structure (102) on a first side (110) of the waveguide (101), comprising diffractive grating features and sub-wavelength grating features, and configured to receive light (104) com- prising a first polarization and a second polarization, wherein the diffractive grating features are configured to couple at least part of the first polarization into the waveguide as in-coupled light (105), and wherein the sub- wavelength grating features are configured to make the diffractive grating features at least partially transparent to the second polarization; and a polarization manipulat- ing grating (103) on a second side (111) of the waveguide (101) configured to receive at least a part of the in-coupled light (105), and to rotate the polarization of the in- coupled light (105), resulting in polarization-rotated in-coupled light (106), when the in-coupled light (105) is reflected from the second side (111) of the waveguide (101) back towards the first side (110) of the wave- guide (101).
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