Abstract: Disclosed is a display module including an output unit configured to form an image to output the image forward, a lens unit configured to have a virtual central axis in front of the output unit and transmit the image so that an optical axis of the image transmitted from the output unit is parallel with the central axis to transmit the image forward, and a guide unit formed to be elongated to have at least a pair of total reflection surfaces facing each other and of which the image transmitted through the lens unit is incident on one side to move to the other side through total internal reflection at least one or more times and the image is reflected on the other side through a separate exit surface to be provided to the user's field of view.