Multi-dof moving stage and display apparatus using the same

A display apparatus comprising:

• a light source configured to provide image light;
• a multi-degree of freedom (DOF) moving stage configured to adjust a position of the light source;
• and
• an optical system configured to provide the image light to a pupil,
• wherein the multi-DOF moving stage comprises:
• an end-effector on which the light source is mounted;
• a plurality of driving links;
• a plurality of actuators configured to drive the plurality of driving links;
• and
• a plurality of driven links each including a first joint portion connected to the end-effector and a second joint portion connected to a respective one of the plurality of driving links,
• wherein for each of the plurality of driven links, at least one of the first joint portion and the second joint portion comprises a joint structure comprising a first flexible member, a first rigid member, and a second rigid member,
• wherein the first rigid member and the second rigid member are arranged apart from each other such that a first gap between the first rigid member and the second rigid member exposes a first surface of the first flexible member, and
• wherein castellated patterns having shapes complementary to each other are respectively provided at a first end portion of the first rigid member adjacent to the first gap and a second end portion of the second rigid member adjacent to the first gap.