Lg Electronics Inc.

Kyujin Choi

Changho Hong

Youngjoon Lee

Sooho Bang

Taemin Kwon

Baekbong Pyo

Sangmo Kim

Geunsu Lee

Hyoungseok Kim

A mobile terminal can include a terminal body having a display unit disposed on one surface thereof; a frame supporting the display unit; a metal member spaced apart from the frame and exposed to an outside of the mobile terminal; a plurality of connecting members connecting the metal member to the frame and grounding the metal member; and an antenna unit disposed adjacent to the frame and including a radiator configured to radiate wireless signals in a first frequency band, in which the metal member is divided into specific areas by the plurality of connecting members, and one area located adjacent to the radiator, is configured to generate a parasitic resonance at a second frequency band different from the first frequency band, and the plurality of connecting members connected to the metal member are spaced apart from one another at different intervals.

Mobile terminal

A mobile terminal including a terminal body having a display unit disposed on one surface thereof; a frame supporting the display unit; a metal member spaced apart from the frame and exposed to an outside of the mobile terminal; a plurality of connecting members connecting the metal member to the frame and grounding the metal member; and an antenna unit disposed adjacent to the frame and including a radiator radiating wireless signals in a first frequency band. Further, the metal member is divided into specific areas by the connecting members, and one area located adjacent to the radiator, generates a parasitic resonance at a second frequency band different from the first frequency band, and a frequency band of the antenna unit is shifted to a third frequency band including the first frequency band by the metal member and the radiator when a dielectric is placed adjacent to the metal member.

A 3-dimensional (3D) printer is disclosed. The 3D printer includes an extruder to extrude a filament into a cavity, a carriage to support the extruder, a moving unit to move the carriage, and a processor to control the extruder and the moving unit. The extruder includes a filament feeder to downwardly feed the filament, a heating unit to heat the filament fed by the filament feeder, a nozzle to output the heated filament into the cavity, a cooling unit to cool the filament feeder, to decrease heat transferred from the heating unit to the filament feeder, a first temperature sensor to sense a temperature of the heating unit, and a second temperature sensor to sense a temperature of the cooling unit. The processor controls the heating unit and the cooling unit, based on the first temperature sensor and the second temperature sensor, to enhance output speed of the filament.

3-dimensional printer

Growing community of inventors

Seoul, South Korea

Kyujin Choi