Abstract: An antiferroelectric and a method for manufacturing an antiferroelectric are disclosed herein. The antiferroelectric may have high permittivity and breakdown voltage by having a PbxLa1-x([Zr1-YSnY]ZTi1-Z) composition. The manufacturing of the antiferroelectric may be performed through appropriate mixing and dysprosium addition.

Abstract: A portable electronic device having a rollable display structure is proposed. When the rollable display panel is unrolled from the display drum inside the housing and drawn out of the housing, a self-standing guide unit guides the rollable display panel to be curved in an arc shape so that the rollable display panel stands upright on its own, whereby the rollable display panel may be maintained in an unrolled state without an additional structure. In this way, the size and weight of a product may be reduced, so that portability of the portable electronic device may be improved.

Abstract: A portable electronic device having a rollable display structure is proposed. When the rollable display panel is unrolled from the display drum inside the housing and drawn out of the housing, a self-standing guide unit guides the rollable display panel to be curved in an arc shape so that the rollable display panel stands upright on its own, whereby the rollable display panel may be maintained in an unrolled state without an additional structure. In this way, the size and weight of a product may be reduced, so that portability of the portable electronic device may be improved.

Abstract: A digital broadcasting transmitter-receiver and method for a portable computer are provided, which can be detachably operated. The digital broadcasting transmitter-receiver for a portable computer can include a case configured to be attached in a bay of a main body, a main substrate installed in the case and mounted with at least one chip that receives a digital broadcasting signal and an antenna partially within the case. An antenna body can reciprocally move to extend outside of the case or the portable computer. With this structure, the digital broadcast can be watched on a conventional portable computer, and expansibility of the portable computer can be increased because users can selectively mount the transmitter-receiver.

Abstract: A swivel hinge assembly is provided for use in an electronic device, such as a portable electronic device. The swivel hinge assembly includes a first rotary shaft configured to be rotatable about a substantially vertically extending axis, a base configured to be rotatable in a substantially horizontal plane by the first rotary shaft, and a second rotary shaft, which is installed on the base, at least a portion of which is configured to be rotatable about a substantially horizontally extending axis which intersects with the first rotary shaft. The swivel hinge assembly may further comprise a cover plate configured to cover an opening formed on a top surface of a main body of the electronic device, and in which the base rotates.

Abstract: Embodiments of a device swapping apparatus and method for a portable computer have advantages in that the detachable device detachably mounted to the portable computer can be easily detached from the portable computer or that the installation space can be reduced. An embodiment of a device swapping apparatus can include a seating space at a side of a detachable device, a driving rod with a rod body where at least a part of which is always positioned within the seating space, and a front handle selectively protruding forwardly from the housing. A cam and cam follower can selectively operate so that the rod body can be either fastened in or protrudes from the seating space whenever the driving rod is pushed into the seating space. An elastic member can provide an elastic force against the driving rod.

Abstract: A multi-band antenna and a notebook computer with a built-in multi-band antenna are disclosed. Since the multi-band antenna is installed at the inner side of a upper and a lower case, it is much favored for a radio communication when a computer is in use by standing up a display device. The multi-band antenna includes at least two transmitting and receiving parts formed with different lengths to fit frequency bands, so that a remote communication of at least two or more bands can be made. The multi-band antenna is positioned between liquid crystal and a side wall of the lower case, and a grounding unit is installed to contact a liquid crystal frame. That is, since the grounding unit is grounded to the liquid crystal frame and the bracket, substantially, the liquid crystal frame and the bracket are wholly grounded to ensure a stable radio frequency communication.

Abstract: Embodiments of a device swapping apparatus and method for a portable computer have advantages in that the detachable device detachably mounted to the portable computer can be easily detached from the portable computer or that the installation space can be reduced. An embodiment of a device swapping apparatus can include a seating space at a side of a detachable device, a driving rod with a rod body where at least a part of which is always positioned within the seating space, and a front handle selectively protruding forwardly from the housing. A cam and cam follower can selectively operate so that the rod body can be either fastened in or protrudes from the seating space whenever the driving rod is pushed into the seating space. An elastic member can provide an elastic force against the driving rod.

Abstract: A mobile electronic equipment with an internal antenna includes a case with a opened portion, a display panel exposed through the opened portion of the case for displaying a character or image information, a panel frame made of metal to support the edges of the display panel and being positioned within the case, and an antenna for enabling a data transmission and reception for a radio communication. The antenna is grounded to the panel frame in a state of being positioned within the case. The antenna is fixed to the panel frame with a bracket for fixing the display panel to the case. The antenna of the mobile electronic equipment is positioned in the portable electronic equipment such as the PDA or the portable computer and data transmission and reception is possibly performed for a radio communication without being exposed outwardly. Thus, the problem that a user should handle the antenna directly can be solved, and the antenna can be prevented from damage possibly caused due to a wrong use.

Abstract: A swivel hinge assembly is provided for use in an electronic device, such as a portable electronic device. The swivel hinge assembly includes a first rotary shaft configured to be rotatable about a substantially vertically extending axis, a base configured to be rotatable in a substantially horizontal plane by the first rotary shaft, and a second rotary shaft, which is installed on the base, at least a portion of which is configured to be rotatable about a substantially horizontally extending axis which intersects with the first rotary shaft. The swivel hinge assembly may further comprise a cover plate configured to cover an opening formed on a top surface of a main body of the electronic device, and in which the base rotates.

Abstract: A multi-band antenna and a notebook computer with a built-in multi-band antenna are disclosed. Since the multi-band antenna is installed at the inner side of a upper and a lower case, it is much favored for a radio communication when a computer is in use by standing up a display device. The multi-band antenna includes at least two transmitting and receiving parts formed with different lengths to fit frequency bands, so that a remote communication of at least two or more bands can be made. The multi-band antenna is positioned between liquid crystal and a side wall of the lower case, and a grounding unit is installed to contact a liquid crystal frame. That is, since the grounding unit is grounded to the liquid crystal frame and the bracket, substantially, the liquid crystal frame and the bracket are wholly grounded to ensure a stable radio frequency communication.

Abstract: A mobile electronic equipment with an internal antenna includes a case with a opened portion, a display panel exposed through the opened portion of the case for displaying a character or image information, a panel frame made of metal to support the edges of the display panel and being positioned within the case, and an antenna for enabling a data transmission and reception for a radio communication. The antenna is grounded to the panel frame in a state of being positioned within the case. The antenna is fixed to the panel frame with a bracket for fixing the display panel to the case. The antenna of the mobile electronic equipment is positioned in the portable electronic equipment such as the PDA or the portable computer and data transmission and reception is possibly performed for a radio communication without being exposed outwardly. Thus, the problem that a user should handle the antenna directly can be solved, and the antenna can be prevented from damage possibly caused due to a wrong use.