Optical member having a plurality of layers with different refractive indices and display apparatus comprising the same

A display apparatus comprising:

• a display panel configured to display an image;
• and
• an optical panel coupled to an upper side or lower side of the display panel,
• wherein the optical panel includes an optical member,
• wherein the optical member includes:
• a first layer including a pattern portion;
• and
• a second layer covering the pattern portion,
• wherein at least one of the first layer or the second layer has a refractive index varied depending on different wavelength areas,
• wherein the different wavelength areas include a visible ray area and an infrared area having a wavelength longer than a wavelength of the visible ray area,
• wherein a difference in a refractive index between the first layer and the second layer is greater in the visible ray area than the infrared area,
• wherein the display panel includes:
• a substrate including a plurality of pixels having a plurality of subpixels;
• and
• an opposing substrate to face the substrate,
• wherein the opposing substrate includes an alignment mark in a non-display area,
• wherein the substrate includes a sub-alignment mark in the non-display area, and
• wherein the first layer and the second layer overlap the alignment mark and the sub-alignment mark.