Abstract: A display is provided. The display device includes a display area and a non-display area located around the display area; a base layer; an organic light-emitting diode (OLED) that is located on the base layer in the display area; and a first crack detection line that is located on the base layer in the non-display area; wherein the first crack detection line comprises a first line that extends substantially in a first direction along a first edge of the display area, a second line that is separated from the first line and extends substantially in the first direction, and a third line that is connected to an end of the first line and an end of the second line, wherein a cross-sectional shape of the first line in a second direction crossing the first direction is inversely tapered.

Abstract: Provided are medical imaging apparatuses that comprising an optical connector, a coupler configured to releasably couple to a first portion of the optical connector and a camera configured to releasably couple to a second portion of the optical connector, wherein the coupler comprises a first portion to which light is incident from the optical connector, and a second portion in which the light passes through an inside of the coupler and is emitted, wherein the first portion is tilted with a predetermined angle with respect to the second portion.