Abstract: Disclosed is a heterojunction semiconductor flexible substrate in which an epitaxial oxide thin film layer is hetero-bonded to a thinned silicon substrate using a metal layer, a manufacturing method thereof, and the heterojunction semiconductor flexible substrate can be applied to sensor, actuator, transducer, or micro electro mechanical systems (MEMS) device using high functionality of the epitaxial oxide thin film layer of high quality as well as an electronic and/or optical device.

Abstract: The present invention relates to a portable communication terminal for dynamic image service capable of abstracting and inserting background image, and method of separating the background image using the same. The present invention has an advantage in that the user's personal privacy could be effectively protected by transmitting the image data of which the background image is removed or other pseudo background image or pseudo dynamic image is inserted because the background image which needs to protect the user's privacy could be removed selectively according to the request of the user or a pseudo background image selected by the user or a pseudo dynamic image prepared beforehand instead of the image data of the user on communicating with dynamic image could be inserted and transmitted to the other user when communicating with dynamic image.