Abstract: The present invention relates to a screen, and more specifically to a screen, to which a content images are projected, comprising screen regions each having a mutually different reflectance. According to the present invention, with respect to implementing a screen having a non-flat surface, as the content images can be projected onto all screen regions while maintaining uniform brightness, an audience can be provided with a content viewing environment by means of screens having a variety of shapes, while satisfactorily maintaining the quality of the of the projected a content images.

Abstract: The present invention relates to a screen-holding structure, and more specifically to a screen-holding structure to withstand the weight of the screen by means of a screen holding apparatus for the entire region or a part of the screen to prevent the phenomenon in which a screen held by a frame sags downward due to the weight of the screen. According to the present invention, the curved surface of the screen can be smoothly maintained by minimizing the downward sagging phenomena of the curved screen, thereby allowing content image to be projected onto the screen without distortion, and consequently allowing a viewing environment having a high sense of immersion and enhanced stereoscopic effect to be provided to an audience.

Abstract: The present invention relates to a curved screen support comprising a plurality of vertical bars arranged vertically from the ground, and a plurality of horizontal bars attached to the vertical bars at one end in the horizontal direction with respect to the ground, wherein horizontal bars are characterized in that the line connecting the other ends of the horizontal bars arranged on the same vertical axis has a curved shape of a set curvature, and the line connecting the other ends of the horizontal bars arranged on the same horizontal axis has a curved shape of set curvature. Therefore, according to the present invention, a curved screen having a curvature along the horizontal axis as well as the vertical axis can be stably held, and by controlling the curvature and angle of the curved screen, enhanced life-like effects can be provided to an audience.

Abstract: A composition for solar cell electrodes, an electrode fabricated using the same, and a solar cell including the electrode, the composition including a conductive powder; a glass frit; and an organic vehicle, wherein the conductive powder includes silver powder and aluminum powder, the silver powder includes silver particles having an average particle size D50 of 1.5 ?m or more in an amount of 50 wt % or more, based on a total weight of the silver powder.

Abstract: Disclosed is an apparatus and a method for diagnosing lesions. More specifically, the present invention relates to an apparatus and a method for diagnosing lesions capable of precisely diagnosing lesions such as breast cancer by digital breast tomosynthesis (DBT). The present invention enables the improvement of lesion diagnosis accuracy and early diagnosis rates.

Abstract: A glass frit includes at least three metal oxides selected from the group of lead oxide, silicon oxide, tellurium oxide, bismuth oxide, zinc oxide, and tungsten oxide, wherein the glass frit exhibits a phase transition peak in the range of about 300° C. to about 600° C. on a cooling curve obtained via an TG-DTA analysis while a mixture of the glass frit and silver powder, obtained by mixing the glass frit with the silver powder in a weight ratio of 1:1, is cooled at a cooling rate of 10° C./min, after heating the mixture to 850° C. at a heating rate of 20° C./min and held there for a wait-time of 10 minutes.

Abstract: A composition for solar cell electrodes includes a conductive powder, a glass frit, an organic vehicle, and a thixotropic agent, the composition satisfying each of Formulae 1 to 7 described herein. A solar cell electrode is produced from the composition. A method of manufacturing a solar cell includes printing the composition in a predetermined pattern over a front surface of a wafer, and firing the printed composition pattern to form at least electrode.

Abstract: Disclosed herein is a composition for solar cell electrodes. The composition includes a silver powder; a bismuth oxide-tellurium oxide-tungsten oxide-based glass frit; and an organic vehicle, wherein the glass frit includes about 40% by weight (wt %) to about 60 wt % of bismuth oxide as a first metal oxide; about 0.25 wt % to about 15 wt % of tellurium oxide as a second metal oxide; about 10 wt % to about 20 wt % of tungsten oxide as a third metal oxide; and about 15 wt % to about 25 wt % of a fourth metal oxide different from the first, second, and third metal oxides. Solar cell electrodes formed of the composition have excellent adhesive strength with respect to a ribbon while minimizing serial resistance (Rs), thereby providing high conversion efficiency.

Abstract: The present invention relates to a composition for solar cell electrodes, comprising: a silver powder; a bismuth oxide-tellurium oxide-tungsten oxide-zinc oxide-based glass frit; and an organic vehicle, wherein the glass fit comprises about 40 wt % to about 60 wt % of bismuth oxide; about 0.25 wt % to about 15 wt % of tellurium oxide; about 10 wt % to about 20 wt % of tungsten oxide; and about 2 wt % to about 20 wt % of zinc oxide, and solar cell electrodes formed of the composition for solar cell electrodes have excellent adhesive strength with respect to a ribbon and minimized serial resistance (Rs), thus providing high conversion efficiency.

Abstract: A paste composition for solar cell electrodes includes conductive particles, a glass frit, an organic binder and a solvent. The conductive particles include at least two groups of conductive particle having different particle diameter distributions. The conductive particle may have an average particle diameter (D50?) of about 1.85 ?m or less and a particle diameter (D90?) at 90% of the cumulative particle diameter distribution of about 3.10 ?m or less.

Abstract: A composition for solar cell electrodes and electrodes fabricated using the same. The composition includes a silver (Ag) powder; a first glass frit containing PbO and a second glass frit containing V2O5 and TeO2; and an organic vehicle. The composition includes two types of glass frits on PbO and V2O5-TeO2, respectively, thereby minimizing contact resistance and adverse influence on a p-n junction of silicon solar cells.

Abstract: A paste composition for a solar cell electrode, a solar cell electrode fabricated using the same, and a solar cell including the electrode, the paste composition including a mixture of conductive powders, the mixture of conductive powders including about 30 wt % to about 55 wt % of a first spherical powder having an average particle diameter D50 of 1.5 ?m or less; about 3 wt % to about 8 wt % of a flake powder having an average particle diameter D50 of about 2 ?m to about 3.5 ?m; and a balance of a second spherical powder having an average particle diameter D50 of greater than 1.5 ?m; glass fit; and an organic vehicle.

Abstract: A composition for solar cell electrodes includes a conductive powder, a glass frit, an organic vehicle, and a thixotropic agent, the composition satisfying each of Formulae 1 to 7 described herein. A solar cell electrode is produced from the composition. A method of manufacturing a solar cell includes printing the composition in a predetermined pattern over a front surface of a wafer, and firing the printed composition pattern to form at least electrode.

Abstract: Disclosed herein are a glass frit and a composition for solar cell electrodes including the same. The glass frit includes lead oxide (PbO) and boron oxide (B2O3) in a weight ratio of lead oxide to boron oxide of about 1:0.075 to about 1:1, wherein a mixture of the glass frit and aluminum (Al) powder in a weight ratio of about 1:1 exhibits a phase transition peak in the range of about 400° C. to about 650° C. on a cooling curve obtained via TG-DTA analysis, measured after heating the mixture to 900° C. at a heating rate of 20° C./min, holding for ten minutes, followed by cooling the mixture at a cooling rate of 10° C. The composition can provide stable efficiency given varying surface resistance and minimize adverse influence on a p-n junction.

Abstract: A composition for solar cell electrodes, an electrode fabricated using the same, and a solar cell including the electrode, the composition including a conductive powder; a glass frit; and an organic vehicle, wherein the conductive powder includes silver powder and aluminum powder, the silver powder includes silver particles having an average particle size D50 of 1.5 ?m or more in an amount of 50 wt % or more, based on a total weight of the silver powder.

Abstract: A paste composition for solar cell electrodes includes a conductive powder, a glass frit, and an organic vehicle. The glass fit includes about 5 wt % to about 55 wt % of Bi2O3, about 10 wt % to about 40 wt % of TeO2, and a balance of PbO.

Abstract: A paste composition for a solar cell electrode includes including an organic vehicle, a conductive powder, and a glass frit, the glass frit including TeO2, and a transition metal oxide component, the transitional metal oxide component including one or more of a transition metal oxide having a melting point of about 1300° C. or more.