Abstract: Disclosed are a photovoltaic module and a photovoltaic system including the same. The photovoltaic module includes a solar cell module, a converter to convert a DC voltage from the solar cell module, an inverter to convert the DC voltage from the converter into an AC voltage, and a plug to outwardly output the AC voltage from the inverter, the plug having a ground terminal. The ground terminal is electrically connected to a ground of the inverter, and the ground of the inverter is electrically connected to a ground of the solar cell module. Thereby, the AC voltage from the photovoltaic module is directly supplied to an outlet inside or outside a building.

Abstract: The present invention relates to a power supply device and a power supply system including the same. The power supply device includes a first connector to receive an input alternating current (AC) voltage, a second connector to output a first output AC voltage to a grid, a third connector connectable with a plug of an external electronic device, a voltage conversion unit to convert a first direct current (DC) voltage stored in a battery into an AC voltage, and a controller configured to control the first output AC voltage based on the input AC voltage not to be supplied to the grid when grid power outage occurs while the first AC voltage is output to the grid, and control the input AC voltage to be output to the third connector as a second output AC voltage, or control the input AC voltage to be converted into the first DC voltage and the first DC voltage to be supplied to the battery. Thereby, the input AC voltage generated by the solar module may be utilized when grid power outage occurs.

Abstract: A conductive silicone resin composition, and an electromagnetic wave-shielding gasket manufactured therefrom include conductive silicon carbide particles coated with a metal in a thermosetting silicone resin composition, thereby having very superior corrosion resistance, deformation resistance and thermal conductivity while maintaining electromagnetic wave-shielding efficiency.

Abstract: The present invention relates to a power supply device and a power supply system including the same. The power supply device includes a first connector to receive an input alternating current (AC) voltage, a second connector to output a first output AC voltage to a grid, a third connector connectable with a plug of an external electronic device, a voltage conversion unit to convert a first direct current (DC) voltage stored in a battery into an AC voltage, and a controller configured to control the first output AC voltage based on the input AC voltage not to be supplied to the grid when grid power outage occurs while the first AC voltage is output to the grid, and control the input AC voltage to be output to the third connector as a second output AC voltage, or control the input AC voltage to be converted into the first DC voltage and the first DC voltage to be supplied to the battery. Thereby, the input AC voltage generated by the solar module may be utilized when grid power outage occurs.

Abstract: Disclosed are a photovoltaic module and a photovoltaic system including the same. The photovoltaic module includes a solar cell module, a converter to convert a DC voltage from the solar cell module, an inverter to convert the DC voltage from the converter into an AC voltage, and a plug to outwardly output the AC voltage from the inverter, the plug having a ground terminal. The ground terminal is electrically connected to a ground of the inverter, and the ground of the inverter is electrically connected to a ground of the solar cell module. Thereby, the AC voltage from the photovoltaic module is directly supplied to an outlet inside or outside a building.

Abstract: A solar cell includes a substrate of a first conductive type; an emitter layer that is positioned on the substrate and is a second conductive type that is opposite to the first conductive type; first electrodes that are connected to the emitter layer; and a second electrode that is connected to the substrate, wherein the emitter layer includes a first emitter portion and a second emitter portion, the first electrodes include a finger electrode, and a bus electrode intersecting and connected to the finger electrode, and the first emitter portion and the second emitter portion are positioned under the bus electrode.

Abstract: A crystallization method using a mask includes providing a substrate having a semiconductor layer; positioning a mask over the substrate, the mask having first, second and third blocks, each block having a periodic pattern including a plurality of transmitting regions and a blocking region, the periodic pattern of the first block having a first position, the periodic pattern of the second block having a second position, the periodic pattern of the third block having a third position, the first, second and third positions being different from each other; and crystallizing the semiconductor layer by irradiating a laser beam through the mask.

Abstract: A crystallization method includes providing a substrate having a silicon thin film; positioning a laser mask having first to fourth blocks on the substrate, each block having a periodic pattern including a plurality of transmitting regions and a blocking region; and crystallizing the silicon thin film by irradiating a laser beam through the laser mask. A polycrystalline silicon film crystallized by this method is substantially free from a shot mark, and has uniform crystalline characteristics.

Abstract: A solar cell includes a substrate of a first conductive type; an emitter layer that is positioned on the substrate and is a second conductive type that is opposite to the first conductive type; first electrodes that are connected to the emitter layer; and a second electrode that is connected to the substrate, wherein the emitter layer includes a first emitter portion and a second emitter portion, the first electrodes include a finger electrode, and a bus electrode intersecting and connected to the finger electrode, and the first emitter portion and the second emitter portion are positioned under the bus electrode.

Abstract: A method for forming emitter layer of a solar cell includes preparing a substrate including a first impurity of a first conductive type, diffusing a second impurity of a second conductive type opposite to the first conductive type in the substrate to form a first emitter portion of the emitter layer in the substrate, and selectively heating a portion of the first emitter portion, which corresponds to a position for forming at least one electrode, to form a second emitter portion.

Abstract: A crystallization method includes providing a substrate having a silicon thin film; positioning a laser mask having first to fourth blocks on the substrate, each block having a periodic pattern including a plurality of transmitting regions and a blocking region; and crystallizing the silicon thin film by irradiating a laser beam through the laser mask. A polycrystalline silicon film crystallized by this method is substantially free from a shot mark, and has uniform crystalline characteristics.

Abstract: A method of crystallizing silicon including preparing a substrate having an amorphous silicon film formed thereon, aligning a mask having a first energy region and a second energy region over a first region of the amorphous silicon film formed on the substrate, irradiating a laser beam through the first and second energy regions of the mask onto the first region of the amorphous silicon film, crystallizing the first region of the amorphous silicon film by irradiating the laser beam through the first energy region of the mask, and activating the crystallized first region by irradiating the laser beam through the second energy region.

Abstract: A crystallization method using a mask includes providing a substrate having a semiconductor layer; positioning a mask over the substrate, the mask having first, second and third blocks, each block having a periodic pattern including a plurality of transmitting regions and a blocking region, the periodic pattern of the first block having a first position, the periodic pattern of the second block having a second position, the periodic pattern of the third block having a third position, the first, second and third positions being different from each other; and crystallizing the semiconductor layer by irradiating a laser beam through the mask.

Abstract: A crystallization method includes providing a substrate having a silicon thin film; positioning a laser mask having first to fourth blocks on the substrate, each block having a periodic pattern including a plurality of transmitting regions and a blocking region; and crystallizing the silicon thin film by irradiating a laser beam through the laser mask. A polycrystalline silicon film crystallized by this method is substantially free from a shot mark, and has uniform crystalline characteristics.

Abstract: A crystallization method using a mask includes providing a substrate having a semiconductor layer; positioning a mask over the substrate, the mask having first, second and third blocks, each block having a periodic pattern including a plurality of transmitting regions and a blocking region, the periodic pattern of the first block having a first position, the periodic pattern of the second block having a second position, the periodic pattern of the third block having a third position, the first, second and third positions being different from each other; and crystallizing the semiconductor layer by irradiating a laser beam through the mask.

Abstract: A crystallization method, includes: forming an amorphous silicon layer on a substrate; forming a first crystallization region by irradiating the amorphous silicon layer with a laser beam having a ramp shaped cross sectional profile that decreases in a scanning direction; and performing a second crystallization by moving a predetermined length in a scanning direction so as to be partially overlapped with the first crystallization region formed by the first crystallization.

Abstract: An embodiment of a laser crystallization method includes providing a substrate on which an amorphous silicon thin film is deposited, positioning a laser mask over the substrate, the laser mask including a mask pattern that contains transmitting regions and a blocking region, irradiating a first laser beam onto a surface of the substrate through the pattern of the laser mask to first crystallize a predetermined region of the silicon thin film, moving the laser mask or a stage on which the substrate is loaded in an X-axis direction to perform second crystallization using the laser mask, repeatedly performing the crystallization to an end of the substrate in the X-axis direction, moving the laser mask or the stage in a Y-axis direction, and repeatedly performing the crystallization in the Y-axis direction to complete crystallization.

Abstract: Provided is a method for crystallizing using a laser mask for selectively crystallizing active regions without a laser shot mark, including: providing an array substrate in which N×M active regions are defined; positioning a laser mask having first and second blocks over the substrate, wherein the first and second blocks have first and second mask patterns, respectively, and the second mask pattern is a reverse pattern of the first mask pattern; irradiating a first laser beam onto the active regions through the first block; and irradiating a second laser beam onto the active regions through the second block.

Abstract: A laser mask and method of crystallization using the same that can produce a polycrystalline silicon thin film having uniform crystallization characteristics. According to the present invention, a method of crystallization using a laser mask having a reference pattern in a first block and the reverse pattern of the reference pattern in a second block includes providing a substrate having a silicon thin film; positioning the first block of the laser mask over a portion of the silicon film and irradiating a first laser beam through the first block; and moving either the laser mask or the substrate to position the second block of the laser mask over the portion of the silicon film and irradiating a second laser beam through the second block.

Abstract: A crystallization method and system are provided which improve a crystallization process by deciding a best-fit focal plane for a laser beam using a test mask and then applying the decided best-fit focal plane to the crystallization process. The crystallization method includes loading a test mask on a mask stage; deciding a best-fit focal plane by performing a crystallization test using the test mask, checking the test result and deciding conditions of a best-fit focal plane from the test result; moving the mask stage to a position corresponding to the best-fit focal plane; loading a mask for crystallization process onto the moved mask stage; and performing the crystallization process using the mask for crystallization process.