Abstract: A method for authentication, a user terminal and an authentication server for executing the same are disclosed. An authentication server according to an embodiment disclosed includes a number receiver that receives a number of a user terminal from a callee who has received a call originated from the user terminal, a device authenticator that determines whether to generate an authentication key based on the number of the user terminal received from the callee and a caller number received from the user terminal, and generates the authentication key when it is determined to generate the authentication key, and an authentication key transmitter that transmits the authentication key to the user terminal.

Abstract: A display device includes a substrate, a plurality of electrode pads including a first electrode pad and a common electrode pad on the substrate, a light emitting element including a first contact electrode on the first electrode pad and a second contact electrode on the common electrode pad, a conductive adhesive member including a plurality of conductive balls connecting the first electrode pad and the first contact electrode and connecting the common electrode pad and the second contact electrode, and a plurality of protrusions on the substrate and protruding in a thickness direction of the substrate. First protrusions from among the plurality of protrusions overlap the electrode pads in the thickness direction of the substrate.

Abstract: Methods and systems are described for adjusting an optical signal. An example device can comprise a plurality of waveguides. The device can comprise an interference structure optically coupled to the plurality of waveguides and configured to receive an optical signal and distribute the optical signal to the plurality of waveguides as a plurality of optical signals. The device can comprise a plurality of phase shifters coupled to corresponding waveguides of the plurality of waveguides and configured to adjust the phase of one or more of the plurality of optical signals. The device can comprise a plurality of emitters optically coupled to corresponding outputs of the plurality of phase shifters and configured to output the adjusted plurality of optical signals. The adjusted plurality of optical signals can be output as light patterns reconfigurable in at least one dimension.

Abstract: Methods and systems are described for emission and/or sensing of optical signals. An example method may comprise supplying an optical signal an optical signal to a first waveguide extending in a first direction and supplying, based on controlling at least one of a first plurality of optical elements, the optical signal to at least one of a plurality of second waveguides extending in a second direction different from the first direction. The method may comprise supplying, based on controlling at least one of a second plurality of optical elements, the optical signal to at least one emitter. Each of the second plurality of optical elements may be separately selectable to control a corresponding emitter. The method may comprise causing, via the at least one emitter, emission of one or more optical signals.

Abstract: A nonvolatile memory apparatus includes a memory cell array and a memory control circuit. The memory cell array includes a plurality of sub arrays each including a plurality of memory cells coupled to a plurality of bit lines. The memory control circuit sequentially couples thereto, based on a single read command signal, at least a single bit line disposed on the respective sub arrays to sequentially access a memory cell coupled to the at least single bit line.

Abstract: A variable resistive memory device includes a memory cell, a first current-applying block, a second current-applying block and a mode setting circuit. The memory cell includes a first electrode, a second electrode, and a memory layer, the memory layer interposed between the first electrode and the second electrode. The first current-applying block is configured to flow a first current to the first electrode that flows from the first electrode to the second electrode. The second current-applying block is configured to flow a second current to the second electrode that flows from the second electrode to the first electrode. The mode setting circuit is configured to selectively provide any one of the first electrode of the first current-applying block and the second electrode of the second current-applying block with a first voltage. When the memory cell is selected, the selected current-applying block, among the first current-applying block and the second current-applying block, is driven.

Abstract: A display device a includes: a transistor disposed on a first substrate; an insulating layer disposed on the transistor; a first electrode disposed on the insulating layer; a partition disposed on the first electrode and the insulating layer, an opening is defined through the partition; a light-emitting element layer disposed in the opening; and a second electrode disposed on the light-emitting element layer and the partition. The insulating layer includes a first region and a third region having different heights from each other and a second region having an inclined surface connecting the first region and the third region, the first region has a lower height than the third region, and the first electrode overlaps the first region in a direction perpendicular to the first substrate.

Abstract: A display device is provided. A display device according to an embodiment of the present invention comprises a body, a moving plate, a bracket, a rack, an actuator and a driving gear. The bracket, rack, actuator and driving gear are coupled to one another to form a driving module, and the bracket comprises a moving guide, an upper cover and a heat dissipation fin. According to an embodiment of the present invention, the display device can be manufactured in which the moving plate can move reciprocatively in a stable manner with respect to the body, the heat dissipation of the actuator can be effectively performed, and the thickness and size of the driving module can be minimized.

Abstract: A flexible display device is disclosed. The flexible display device includes a first body, a second body, a flexible display, a first rack, a second rack, a first gear, and a second gear. The first gear and the second gear rotate in conjunction with each other. The flexible display is divided into a first region and a second region, and the second rack forms a continuous loop together with the second region of the flexible display. Accordingly, when the second body slides with respect to the first body, tension can be stably applied to the flexible display, and the flexible display is prevented from being loosened.

Abstract: A display device includes a substrate that includes a display area and a non-display area; a mask support that is disposed in the non-display area of the substrate; a sealant that is disposed in the non-display area of the substrate and is disposed between the mask support and the display area; an insulating layer that is disposed between the sealant and the mask support; and a plurality of grooves that are formed by removing at least a part of the insulating layer.

Abstract: A flexible display device is provided. A flexible display device according to one embodiment of the present invention comprises a body, a moving plate, a first pulley, a second pulley, a driving track and a flexible display. The flexible display is coupled to outer surfaces of the moving plate and the driving track, and the driving track forms a continuous track shape by itself or together with the moving plate. Therefore, provided is the flexible display device in which a constant tension can be maintained over the entire section of the driving track while the moving plate and the driving track support the flexible display, the occurrence of spring back in the flexible display can be minimized, and damage caused by unevenness of the flexible display, and the like, can be prevented.

Abstract: An authentication server according to an embodiment disclosed includes a number receiver that receives a number of a user terminal from a callee who has received a call originated from the user terminal, an device authenticator that determines whether to generate an authentication key based on the number of the user terminal received from the callee and a caller number received from the user terminal, and generates the authentication key when it is determined to generate the authentication key, and an authentication key transmitter that transmits the authentication key to the user terminal.

Abstract: A semiconductor package and a method of manufacturing a semiconductor package. As a non-limiting example, various aspects of this disclosure provide a semiconductor package, and method of manufacturing thereof, that comprises a substrate having a first surface and a second surface opposite to the first surface, and comprising at least one first recess portion formed in a direction ranging from the first surface toward the second surface, a plurality of first recess conductive patterns formed in the first recess portion, and a first passive element inserted into the first recess portion of the substrate and having a first electrode and a second electrode electrically connected to the plurality of first recess conductive patterns.

Abstract: A nonvolatile memory apparatus includes a memory cell array and a memory control circuit. The memory cell array includes a plurality of sub arrays each including a plurality of memory cells coupled to a plurality of bit lines. The memory control circuit sequentially couples thereto, based on a single read command signal, at least a single bit line disposed on the respective sub arrays to sequentially access a memory cell coupled to the at least single bit line.

Abstract: A semiconductor package and a method of manufacturing a semiconductor package. As a non-limiting example, various aspects of this disclosure provide a semiconductor package, and method of manufacturing thereof, that comprises a substrate having a first surface and a second surface opposite to the first surface, and comprising at least one first recess portion formed in a direction ranging from the first surface toward the second surface, a plurality of first recess conductive patterns formed in the first recess portion, and a first passive element inserted into the first recess portion of the substrate and having a first electrode and a second electrode electrically connected to the plurality of first recess conductive patterns.

Abstract: A display device includes a substrate which includes a display area and a non-display area, a transistor disposed in the display area, a pad disposed in the non-display area, and an insulating layer which is disposed on the transistor and defines an opening which overlaps the pad in a plan view. The pad includes a main layer, a first auxiliary layer on the main layer, and a second auxiliary layer on the first auxiliary layer, and the second auxiliary layer defines the opening.

Abstract: A display device a includes: a transistor disposed on a first substrate; an insulating layer disposed on the transistor; a first electrode disposed on the insulating layer; a partition disposed on the first electrode and the insulating layer, an opening is defined through the partition; a light-emitting element layer disposed in the opening; and a second electrode disposed on the light-emitting element layer and the partition. The insulating layer includes a first region and a third region having different heights from each other and a second region having an inclined surface connecting the first region and the third region, the first region has a lower height than the third region, and the first electrode overlaps the first region in a direction perpendicular to the first substrate.

Abstract: Methods and systems are described for adjusting an optical signal. An example device can comprise a plurality of waveguides. The device can comprise an interference structure optically coupled to the plurality of waveguides and configured to receive an optical signal and distribute the optical signal to the plurality of waveguides as a plurality of optical signals. The device can comprise a plurality of phase shifters coupled to corresponding waveguides of the plurality of waveguides and configured to adjust the phase of one or more of the plurality of optical signals. The device can comprise a plurality of emitters optically coupled to corresponding outputs of the plurality of phase shifters and configured to output the adjusted plurality of optical signals. The adjusted plurality of optical signals can be output as light patterns reconfigurable in at least one dimension.

Abstract: A flexible display device is provided. The flexible display device according to an embodiment of the present disclosure may include a first body, a second body, a first link, and a second link. According to an embodiment of the present disclosure, in an unfolding state, the first link and the second link may not protrude out of the first body and the second body, and the first link and the second link may be changed in a form that may protect the flexible display during folding.

Abstract: A flexible display device is provided. The flexible display device according to an embodiment of the present disclosure may include a first body, a second body, a first link, and a second link. According to an embodiment of the present disclosure, in an unfolding state, the first link and the second link may not protrude out of the first body and the second body, and the first link and the second link may be changed in a form that may protect the flexible display during folding.