Abstract: A refrigerator comprises: a case having a cooling chamber; a machine room disposed on one side of the case, and configured to accommodate a compressor therein; a condenser disposed on an outer surface of the case; and a heat emission unit configured to guide external air of the case for heat emission of the compressor and the condenser. In the refrigerator, heat emission of the machine room and the condenser is sufficiently performed, and a compact configuration of the machine room is implemented.

Abstract: By means of the front panel structure having the insulating layer according to the embodiment of the present invention, the phenomenon that frost is formed on a structure in a freezing chamber is preferably reduced even though outside air is introduced while opening/closing a freezing chamber door.

Abstract: Method for controlling operation of a refrigerator including the steps of turning on a compressor when a temperature of a food storage chamber reaches to an upper limit of upper/lower temperature deviations ?T from an optimal setting temperature T, turning off the compressor when the temperature of the food storage chamber reaches to a lower limit of upper/lower temperature deviations ?T from the optimal setting temperature T, and varying the upper/lower temperature deviations ?T with an outside temperature.

Abstract: A method for controlling operation of a refrigerator having two evaporators is provided which allows food to be effectively stored in refrigerating and freezing chambers of the refrigerator. A Refrigerating-Freezing (RF) cycle and/or a Freezing (F) cycle of the refrigerator and compressor operation are controlled based on temperatures of various chambers within the refrigerator. This may be further enhanced by also controlling operation of the evaporators and their respective evaporator fans to further optimize cooling output and efficiency. In this manner, the various refrigerating and freezing chambers of the refrigerator can be maintained at an appropriate temperature, power consumption is minimized, and load on the compressor can be adequately managed so as to provide for effective food storage.

Abstract: A method for reducing power consumption of a refrigerator and improving a refrigerating efficiency is provided. This method controls a power saving operation of a refrigerator with two evaporators by either extending or delaying operation of at least one of, or a combination of, a freezer chamber evaporator fan, a refrigerating chamber evaporator fan, or a condenser fan.

Abstract: Method for controlling operation of a refrigerator including the steps of turning on a compressor when a temperature of a food storage chamber reaches to an upper limit of upper/lower temperature deviations &Dgr;T from an optimal setting temperature T, turning off the compressor when the temperature of the food storage chamber reaches to a lower limit of upper/lower temperature deviations &Dgr;T from the optimal setting temperature T, and varying the upper/lower temperature deviations &Dgr;T with an outside temperature.

Abstract: Device for adjusting a mounting angle of an LCD for a refrigerator including an LCD rotatably mounted on a front surface of a door of a refrigerator by a hinge, and mounting angle adjusting means in rear of the LCD for rotating the LCD to an angle centered on the hinge shaft, thereby permitting the user to watch the most clear image, and improving a freedom of design.

Abstract: Method for controlling operation of a refrigerator including the steps of turning on a compressor when a temperature of a food storage chamber reaches to an upper limit of upper/lower temperature deviations &Dgr;T from an optimal setting temperature T, turning off the compressor when the temperature of the food storage chamber reaches to a lower limit of upper/lower temperature deviations &Dgr;T from the optimal setting temperature T, and varying the upper/lower temperature deviations &Dgr;T with an outside temperature.

Abstract: A method for controlling operation of a refrigerator having two evaporators is disclosed, in which food can be effectively stored with a frozen state or a refrigerated state. To this end, the method for controlling operation of a refrigerator having two evaporators includes the steps of (a) starting a compressor in which a drive of the compressor starts; (b) continuous operation in which the RF cycle or the F cycle is operated according to a temperature of the freezing chamber or the refrigerating chamber after the compressor is operated; and (c) stopping a operation of the compressor if a temperature of the freezing chamber or the refrigerating chamber corresponds to each preset temperature range, thereby making a cycle and repeatedly processing.

Abstract: A direct cooling type refrigerator includes: a main body with a certain space for keeping food items; a freezing chamber formed at an upper portion of the main body and keeping frozen food items; a refrigerating chamber sectioned by a barrier with the freezing chamber, formed at a lower portion of the main body and keeping refrigerated food items; a freezing chamber evaporator buried in a side wall of the freezing chamber and directly heat-exchanged with air inside the freezing chamber; and a refrigerating chamber evaporator buried in a side wall of the refrigerating chamber and directly heat-exchanged with air inside the refrigerating chamber.

Abstract: The present invention relates to a method for defrosting a refrigerator with two evaporators, and more particularly, to a method for defrosting a refrigerator with two evaporators, in which the two evaporators are operated on the same time when defrosting time points of the two evaporators are close. Moreover, when it is intended that the freezing chamber evaporator is defrosted, after the freezing chamber temperature and the storage chamber temperature are dropped to lower limits of temperature ranges, the freezing chamber evaporator is defrosted, and when the storage chamber is operative in a kimchi fermenting mode for fermenting kimchi, it is made that the storage chamber evaporator is not defrosted even if the storage chamber evaporator reaches to the defrosting period.

Abstract: An apparatus and a method for controlling operation of a linear motor compressor, by which a linear motor compressor can operate always in an optimum condition by coping with the load variation due to changes in a refrigerator and the circumstances. In more detail, a current peak value at TDC=0 is detected by comparing a current applied to the linear motor compressor with a formerly detected current, and accordingly the linear motor compressor is operated by a switching control signal generated according to a duty-ratio corresponding to the current peak value.

Abstract: Provided is an apparatus and method for cleaning and drying a semiconductor wafer. Isopropyl alcohol and deionized water are premixed in a desired ratio before a cleaning solution containing isopropyl alcohol and deionized water is supplied into a treating bath. Accordingly, a chemical compound remaining due to deionized water can be effectively removed and the creation of water marks due to isopropyl alcohol can be effectively prevented. As a result, cleaning and drying effects can be increased and a cleaning solution can be reused.

Abstract: A direct cooling type refrigerator includes: a main body with a certain space for keeping food items; a freezing chamber formed at an upper portion of the main body and keeping frozen food items; a refrigerating chamber sectioned by a barrier with the freezing chamber, formed at a lower portion of the main body and keeping refrigerated food items; a freezing chamber evaporator buried in a side wall of the freezing chamber and directly heat-exchanged with air inside the freezing chamber; and a refrigerating chamber evaporator buried in a side wall of the refrigerating chamber and directly heat-exchanged with air inside the refrigerating chamber.

Abstract: An apparatus and a method for controlling operation of a linear compressor uses a pattern recognition for operating a compressor at an optimum efficiency by recognizing a trace in a graph about relation between a current and a displacement as a pattern and sensing variation of the pattern.

Abstract: An apparatus for controlling an operation of a linear compressor includes: a sensorless circuit unit for detecting a current and a voltage applied to a linear compressor and outputting a work operation value corresponding to them; a stroke controller for receiving the work operation value and outputting a switching control signal corresponding to a variation amount of the work operation value; and an electric circuit unit for receiving the switching control signal from the stroke controller and outputting a certain voltage to the linear compressor, accordingly, a TDC of the piston in consideration of an error due to the nonlinear characteristic can be controlled, and thus, an operation efficiency of the linear compressor can be improved.

Abstract: In an apparatus and a method for controlling a linear compressor, an apparatus for controlling a linear compressor includes a linear compressor adjusting a refrigerating capacity by a stroke voltage according to a stroke reference value, a current detecting unit detecting a current applied to the linear compressor, a work operation unit generating a work operation signal by integrating a current detected from the current detecting unit, a suction/discharge pressure difference storing unit storing a suction/discharge pressure difference according to the work operation signal, a microcomputer outputting a switching control signal according to the work operation signal and displaying the suction/discharge pressure difference according to the work operation signal, and an electric circuit unit controlling the linear compressor in accordance with the switching control signal.

Abstract: In an apparatus and a method for controlling operation of a linear compressor, operation of a linear compressor is controlled by finding each inflection point as a TDC (top dead center) is 0 by using a current and a displacement vector generated in the linear compressor, determining a duty ratio on the basis of the inflection point and generating a switching control signal according to the determined duty ratio.

Abstract: The present invention relates to a method for defrosting a refrigerator with two evaporators, and more particularly, to a method for defrosting a refrigerator with two evaporators, in which the two evaporators are operated on the same time when defrosting time points of the two evaporators are close.

Abstract: An organic light emitting display device having high transmittance with respect to external light and a method of manufacturing the same. The organic light emitting display device includes a substrate; a plurality of pixels formed on the substrate, each of the pixels including a first region that emits light and a second region that transmits external light; a plurality of thin film transistors disposed in the first region of each pixel; a plurality of first electrodes disposed in the first region of each pixel and electrically connected to the thin film transistors, respectively; a second electrode formed opposite to the plurality of first electrodes and comprising a plurality of transmission windows corresponding to the second regions; and an organic layer formed between the first electrodes and the second electrode. The transmission windows can be formed in the second electrode, that is, a cathode.