Abstract: In an embodiment, a method includes: forming a first inter-metal dielectric (IMD) layer over a semiconductor substrate; forming a bottom electrode layer over the first IMD layer; forming a magnetic tunnel junction (MTJ) film stack over the bottom electrode layer; forming a first top electrode layer over the MTJ film stack; forming a protective mask covering a first region of the first top electrode layer, a second region of the first top electrode layer being uncovered by the protective mask; forming a second top electrode layer over the protective mask and the first top electrode layer; and patterning the second top electrode layer, the first top electrode layer, the MTJ film stack, the bottom electrode layer, and the first IMD layer with an ion beam etching (IBE) process to form a MRAM cell, where the protective mask is etched during the IBE process.

Abstract: A virtual reality positioning device including a casing, a plurality of lenses, and a plurality of optical positioning components is provided. The casing has a plurality of holes. The lenses are installed in the holes, respectively, where a field angle of each of the lenses is greater than or equal to 120 degrees and less than or equal to 160 degrees, and the lenses include convex lenses or Fresnel lenses. The optical positioning components are installed in the casing and aligned to the lenses, respectively. In addition, a virtual reality positioning system and manufacturing method of a virtual reality positioning device are provided.

Abstract: A virtual reality positioning device including a casing, a plurality of lenses, and a plurality of optical positioning components is provided. The casing has a plurality of holes. The lenses are installed in the holes, respectively, where a field angle of each of the lenses is greater than or equal to 120 degrees and less than or equal to 160 degrees, and the lenses include convex lenses or Fresnel lenses. The optical positioning components are installed in the casing and aligned to the lenses, respectively. In addition, a virtual reality positioning system and manufacturing method of a virtual reality positioning device are provided.

Abstract: This invention provides a software status configuration method and a mobile communication device using the same. The mobile communication device has a real-time operation mode and a real-time usage status, respectively representing the status of the user and the usage of the mobile communication device. The mobile communication device further includes a network communication software for performing real-time communication with other contacts online. The network communication software has a user status for indicating whether the user is available for real-time communication. The software status configuration method of the present invention will configure the user status based on combinations of the current real-time operation mode and the real-time usage status.

Abstract: The present invention relates to a toner cartridge, which contains the toner directly in a housing. The housing has an opening. A plug is disposed in the housing where the opening is. The plug has a small diameter portion that has a diameter smaller than the opening. A piston is disposed in the housing to be biased by an elastic member to the plug for sealing the opening. Such toner cartridge has a simple structure to reduce the cost of fabrication and use and has a function of preventing leaking toner.

Abstract: The present invention relates to a toner cartridge, which contain the toner directly in a housing. The housing has an opening. A plug is disposed in the housing at where the opening is. The plug has a small diameter portion that has a diameter smaller than the opening. A piston is disposed in the housing to be biased by an elastic member to the plug for sealing the opening. Such toner cartridge has a simple structure to reduce the cost of fabrication and use and has a function of preventing leaking toner.