Alignment film and method of manufacturing the same, phase difference device and method of manufacturing the same, and display unit

A display unit comprising:

• a display panel driven based on an image signal;
• a backlight unit illuminating the display panel;
• and
• a phase difference device provided on the side opposite to the backlight unit with respect to the display panel,
• wherein the phase difference device includes
• an alignment film that has a substrate having a plurality of grooves extending in a specific direction on a surface and a non-alignment thin film formed along a surface of the plurality of grooves, and
• a phase difference layer that is provided being contacted with a surface of the non-alignment thin film, and includes a liquid crystal material that is aligned along an extending direction of a dent formed by the non-alignment thin film and is polymerized.

A method of manufacturing a phase difference device comprising:

• a first step of forming a plurality of grooves extending in a specific direction on a surface of a substrate;
• a second step of forming a non-alignment thin film formed along a surface of the plurality of grooves;
• and
• a third step of forming a phase difference layer in which a liquid crystal material is aligned along an extending direction of a dent formed by the non-alignment thin film by coating a surface of the non-alignment thin film with the liquid crystal material and polymerizing the liquid crystal material.