This study explored various attributes and expressions based on the role and value of picture books based on appbooks that are widely used as digital contents in recent years. In particular, focused on pop-up format, one of several attempts to enhance the function of picture books, and tried to reveal the characteristics of modern digital media attributes by looking at how its attributes are embedded in digital contents such as multimedia titles and e-books.
Through the research, it was found that the pop-up form functions as a trigger in the clickable visual mechanisms of the existing screen to reveal the narrative, implicitly suggesting and revealing various stories, and naturally expanding the narrative. Also, it was found that the pop-up format mainly reveals extended relations that provide different contexts among the types of relations that correspond to texts, and also reveals various counter relationships that provide room for complementing what the text describes from different angles. In addition, the pop-up format frequently attempted to borrow the physical and cognitive context of reality as an attempt to produce a feeling to perceive it as a real experience. In addition, it was judged that various effects due to the intertextuality, such as an interpretative response, an associative response, and an evaluative response, would be exerted on the user by repeatedly using structural information presented by a pop-up form in terms of cognitive response in response.