Abstract: Disclosed are a three-dimensional flash memory for improving contact resistance of IGZO channel layer and a method for manufacturing same. According to one embodiment, the three-dimensional flash memory may comprise: multiple word lines sequentially stacked and extending in a horizontal direction on a substrate; and at least one string extending in a vertical direction on the substrate through the multiple word lines, the at least one string comprising a channel layer extending in the vertical direction and a charge storage layer formed to surround the channel layer, wherein the at least one string comprises a drain junction formed in a dual structure and comprising an N+ doped first area on the channel layer and an N+ doped second area with a material having lower contact resistance than the channel layer.

Abstract: The present invention relates to a counterfeit prevention paper and manufacturing method thereof, and more particularly to currency, securities, official document and several certificates, etc. The counterfeit prevention paper according to the present invention comprises a paper and a thermopaint layer which is formed on a paper and is discolored according to a temperature. The counterfeit prevention paper according to the present invention can detect easily a counterfeit by an unaided eye. Also, a function for preventing a counterfeit is not copied by a counterfeit device, thus the counterfeit prevent paper according to the present invention can improve a reliability of various official documents and several certificates, etc.

Abstract: The present invention relates to a counterfeit prevention paper and manufacturing method thereof, and more particularly to currency, securities, official document and several certificates, etc. The counterfeit prevention paper according to the present invention comprises a paper and a thermopaint layer which is formed on a paper and is discolored according to a temperature. The counterfeit prevention paper according to the present invention can detect easily a counterfeit by an unaided eye. Also, a function for preventing a counterfeit is not copied by a counterfeit device, thus the counterfeit prevent paper according to the present invention can improve a reliability of various official documents and several certificates, etc.

Abstract: The present invention relates to a wireless camera with a code division multiple access (CDMA) module and a motion picture transmission system using the wireless camera, and more particularly, a motion picture processor, a communication processor comprising a ringing detector and the CDMA module; a control part comprising a microprocessor and a memory storing a system operation program; and a power controller comprising a battery for supply operation power and a power switch controlled by the microprocessor to switch power supply.