Abstract: A method includes: sensing a first container on an electric range by using at least one loop coil; sensing removal of the first container by using at least one of working coils; sensing a second container on the electric range by using at least one of loop coils; and determining an identity of the first container and the second container. The determining the identity is on the basis of at least one of: a first similarity determined based on damping vibration in each of at least one loop coil having sensed the first container and damping vibration in each of at least one loop coil having sensed the second container; and a second similarity determined based on the number of loop coils having sensed the first container and the number of loop coils having sensed the second container.

Abstract: Disclosed are a power conversion device for an electric range, and a control method thereof. The control method according to one embodiment of the present invention comprises: receiving a user's selection of the number of outputs through an interface unit, and determining the resonance frequency from the number of outputs and an object to be heated; comparing a rectified voltage and the voltage at both ends of a switching element, and generating a switching timing reference signal; and determining a delay time according to the difference between the resonance frequency and the frequency of the switching timing reference signal, and outputting a switching control signal that turns on after the delay time has passed since the falling edge of the switching timing reference signal.

Abstract: The present invention provides an electric stove having a single free-zone burner, the electric stove comprising: a controller which outputs a first output signal comprising a first output level signal and a first synchronization signal, and a second output signal comprising a second output level signal and a second synchronization signal; a first inverter which successively receives the first output signal and second synchronization signal, and outputs first high-frequency power to a first working coil; and a second inverter which successively receives the first synchronization signal and second output signal, and outputs second high-frequency power to a second working coil, wherein the first inverter and second inverter simultaneously output first high-frequency power and second high-frequency power when the first synchronization signal and second synchronization signal are both received.

Abstract: Disclosed are a power conversion device, an electric range including same, and a control method therefor.

Abstract: An organic light emitting diode display includes a panel assembly for displaying an image and a first surface stress enhancing member arranged on a rear surface of the panel assembly. In one embodiment, the organic light emitting diode display includes a second surface stress enhancing member arranged on a front surface of the panel assembly. In anther embodiment, the organic light emitting diode display includes a lower bezel arranged on a rear surface of the first surface stress enhancing member and a shock absorption tape arranged between the first surface stress enhancing member and the lower bezel. The structure of the organic light emitting diode display efficiently prevents damages caused by an external impact.

Abstract: An organic light emitting diode display includes a panel assembly for displaying an image and a first surface stress enhancing member arranged on a rear surface of the panel assembly. In one embodiment, the organic light emitting diode display includes a second surface stress enhancing member arranged on a front surface of the panel assembly. In anther embodiment, the organic light emitting diode display includes a lower bezel arranged on a rear surface of the first surface stress enhancing member and a shock absorption tape arranged between the first surface stress enhancing member and the lower bezel. The structure of the organic light emitting diode display efficiently prevents damages caused by an external impact.