Abstract: Provided is a method of manufacturing a light-emitting element, the method including positioning a substrate, forming a first separation layer, which includes a first sacrificial layer, an etching control layer on the first sacrificial layer, and a second sacrificial layer on the etching control layer, on the substrate, forming at least one first light-emitting element on the first separation layer, and separating the first light-emitting element from the substrate.

Abstract: A cooking apparatus performing cooking with a cooking container disposed at any desired position on a cooking plate, and a heating device thereof. The cooking apparatus includes a cooking plate to receive a cooking container thereon, and at least one working coil disposed under the cooking plate to heat the cooking container, the at least one working coil including a first portion and a second portion having a different winding structure of a conducting wire which forms the working coil so that a winding density of the conducting wire at one of the first portion and the second portion is relatively higher than the other of the first portion and the second portion.

Abstract: Disclosed herein are a heating device usable with a cooking appliance and a manufacturing method thereof to assure economical formation and arrangement of a working coil. The heating device usable with a cooking appliance includes a working coil formed by spirally winding a conducting wire, and a sheet member arranged to support the working coil and having a supporting plane facing the working coil. Individual windings of the conducting wire, which constitute individual turns of the working coil, are spaced apart from neighboring windings by a predetermined distance. Spaces are defined between the individual neighboring windings of the conducting wire without a structure to guide the working coil.

Abstract: A cooking apparatus performing cooking with a cooking container disposed at any desired position on a cooking plate, and a heating device thereof. The cooking apparatus includes a cooking plate to receive a cooking container thereon, and at least one working coil disposed under the cooking plate to heat the cooking container, the at least one working coil including a first portion and a second portion having a different winding structure of a conducting wire which forms the working coil so that a winding density of the conducting wire at one of the first portion and the second portion is relatively higher than the other of the first portion and the second portion.

Abstract: Disclosed are an electric range and an induction coil unit used therein. The electric range includes a plate, on which cooking containers are mounted; an induction coil unit provided under the plate, and including a plurality of induction coils; and a control unit to control the operation of the induction coil unit, wherein at least one of the induction coils includes at least one rectilinear part.

Abstract: An induction heating cooker and a control method thereof. The induction heating cooker includes a plurality of heating coil groups, each of the heating coil groups including a plurality of heating coils connected in series, a plurality of inverters to individually supply high-frequency voltages to the heating coil groups, respectively, and a controller to control operations of the inverters such that the high-frequency voltages are supplied to the heating coil groups, respectively, based on the numbers of heating coils upon which at least one cooking container is placed within the respective heating coil groups. Therefore, it is possible to effectively heat the cooking container even though the container is put on any position of a cooking plate irrespective of a specific position of the cooking plate. Also, it is possible to effectively heat the container regardless of the size of the container.

Abstract: Disclosed is an apparatus and method for induction heating. The induction heating cooker determines an existence of a vessel and determines material and a bottom size of the vessel by using resonance voltage, which is applied to a heating coil for heating the vessel, so that a proper control operation is performed corresponding to the existence of the vessel, the material and the bottom size of the vessel.

Abstract: A cooking shelf for a microwave oven allows food placed thereon to be equally close to its upper and lower heaters to evenly cook the food. The cooking shelf includes an upper shelf part having a certain area on which food is placed, a column part, which is downwardly extended from the upper shelf part by a certain length to support the upper shelf part, and a lower support part which is connected to a lower end of the column part and radially extended to support the column part.

Abstract: A cooking shelf for a microwave oven allows food placed thereon to be equally close to its upper and lower heaters to evenly cook the food. The cooking shelf includes an upper shelf part having a certain area on which food is placed, a column part, which is downwardly extended from the upper shelf part by a certain length to support the upper shelf part, and a lower support part which is connected to a lower end of the column part and radially extended to support the column part.

Abstract: Disclosed is a microwave oven having a cavity casing forming a cooking compartment, comprising a temperature sensor sensing a temperature of the cooking compartment; a duct member installed on the top face of the cavity casing, guiding a flow of air, having an opening toward the cavity casing at one side thereof, and a holder sensor provided on an inner wall of the duct member, holding the temperature sensor. With this configuration, an operational process for installing the temperature sensor in the microwave oven is simplified and the cost of production can be reduced.

Abstract: A device for spitting foodstuffs to be cooked in a cooking chamber of a microwave oven comprising a supporting member and many spit members supported by a fixing member. Each of the spit members has a fixing part engaged with the supporting member, a connection part extended outward in a radial direction from the fixing part, and many spit parts in parallel extended upward from the connection part. Thus, many a small foodstuff can be supported conveniently.

Abstract: Disclosed a roasting spit which is used for cooking meat such as chicken or turkey in a microwave oven. The roasting spit for a microwave oven comprises a ring-shaped support member disposed on a tray and including a horizontal coupling portion formed at one end thereof to be bent toward the center of the support member, and a vertical coupling portion formed at an other end of the support member to be multi-bent upward, and a pin member for stabbing a roasting material, the pin member being provided with an coupling hole formed at lower end thereof, thereby the pin member being selectively coupled with the horizontal coupling portion and the vertical coupling portion. When the roasting spit is not used, the pin member can be coupled with the horizontal coupling portion, so as to guarantee a safe packing with less expense and as well greatly reduce the package size.

Abstract: A microwave oven has an auxiliary cooking device disposed within a cooking chamber for fixing foodstuffs to be cooked. The auxiliary cooking device includes a supporting base placed on the cooking chamber, a coupling member coupled on the supporting base, a main fixing bar on which relatively large foodstuffs are fixed, and a plurality of auxiliary fixing bars on which relatively small foodstuffs are fixed. The main fixing bar is supported on the supporting base or the coupling member. The auxiliary fixing bars are removably mounted on the coupling member.

Abstract: An electromagnetic induction heating cooker includes a heating coil situated below a cooking plate and mounted on a mounting plate. An attachment assembly is connected to the mounting plate within the center of the coil. The attachment assembly includes a pair of horizontally projecting pieces which overlie the coil and press downwardly thereagainst. A temperature sensor carried by the holder is spring-biased upwardly into contact with the underside of the cooking plate. The holder carries a thermal fuse for shutting off the coil when a sensed temperature exceeds a reference temperature.