Sequential joint behavior sheet using photo deformation and method of controlling folding and unfolding thereof

A sequential joint sheet using photo deformation, comprising:

• at least three rigid parts that are of a rigid state;
• a first joint part joining two of the rigid parts that are adjacent to each other;
• and
• a second joint part joining two of the rigid parts that are adjacent to each other and spaced apart from the first joint part,
• wherein the first and second joint parts have a first state in which the adjacent rigid parts joined by the first and second joint parts are parallel to each other, and a second state in which a folding behavior occurs along the first and second joint parts wherein one rigid part performs a folding behavior with respect to the other rigid part of the two adjacent rigid parts between the first and second joint parts, the second state being reached when light is absorbed, and
• print patterns having different degrees of transparency are formed on a transparent high-molecular-weight polymer in the first and second joint parts, and thus a folding behavior is sequentially performed at the first and second joint parts due to different times taken to reach the second state through radiation of light according to the degrees of transparency of the first and second joint parts when the transparent high-molecular-weight polymer is exposed to uniform light distribution.