• Title/Summary/Keyword: screen printing technique

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The Thickness Change of the Phosphor Ink Layer and the Dielectric Ink Layer of a Inorganic Powder EL Lamp That was produced by Screen Printing Technique (스크린 인쇄 기법에 의해 제작된 분산형 무기 EL 램프의 형광층 및 유전층의 두께 변화)

  • Moon, Kil-Hwan;Kang, Young-Reep
    • Journal of the Korean Graphic Arts Communication Society
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    • v.29 no.2
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    • pp.83-92
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    • 2011
  • A inorganic powder EL lamp was made by screen printing technique with phosphor ink and dielectric ink. The thickness change of a phosphor ink layer and a dielectric ink layer were not influenced on dielectric content, but rely on phosphor size and vehicle. Once finishing screen printing technique with phosphor ink and dielectric ink, and its surface has been printed again before not drying of phosphor ink and dielectric ink. Then phosphor ink and dielectric ink were not transferred. The electric capacity of inorganic powder EL lamp was more influenced on dielectric content than the thickness of dielectric ink layer, and it was more dependent on the thickness of phosphor ink layer than the thickness of dielectric ink layer.

Screen Printing Electrode Formation Process for Crystalline Silicon Solar Cell (결정질 실리콘 태양전지용 스크린 프린팅 전극 공정 개발)

  • Eom, Taewoo;Lee, Sang Hyeop;Song, Chan Moon;Park, Sang Yong;Lim, Donggun
    • Current Photovoltaic Research
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    • v.5 no.1
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    • pp.9-14
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    • 2017
  • The screen printing technique is one of process to form electrode for crystalline silicon solar cell and has been studied a lot, because it has many advantages such as low price, high efficiency and mass production due to simple and fast process. The reason why electrode formation is important is for influence of series resistance and amount of incident light in crystalline silicon solar cell. In this study, electrode was formed by screen printing method with various conditions like squeegee angle, printing speed, snap off, printing pressure. After optimizing various conditions, double printing method was applied to obtain low series resistance and high aspect ratio. As a result, we obtained electrode resistance 45.31 ohm, aspect ratio 4.38, shading loss 7.549% mono-crystalline silicon solar cell with optimal double screen printing condition.

High Power Characteristics of Amorphous $MnO_2$ Electrode by Variation of Electrode Thickness (비정질 $MnO_2$ 전극의 전극두께에 따른 고출력 특성 변화)

  • Seong W. K.;Kim E. S.;Lee H. Y.;Kim S. W.
    • Journal of the Korean Electrochemical Society
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    • v.3 no.4
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    • pp.235-240
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    • 2000
  • Screen-printing and doctor blade method were investigated and proposed as an electrode coating process for high power capacitor. CV measured from the amorphous $MnO_2$ electrode prepared by screen-printing shows closer to ideal capacitor characteristics. Specific capacitances calculated from CVs with potential scan rate of 50mV/s were 5.8, 81.8, and 172.0 F/g for electrode thickness of $140{\mu}m,\;24{\mu}m,\; 3{\mu}m$, respectively. Assumed that utilization of active $MnO_2$ in electrode of screen-printing is $100\%$, those were $3.4\%$ in one of paste method and $47.6\%$ in one of doctor blade method. The screen-printing can be good technique to coat thin film on current collector for high power application.

The Altering Ratio of the luminance of a Inorganic Powder EL Lamp That was made by Screen Printing Technique (스크린 인쇄 기법에 의해 제작된 분산형 무기 EL 램프의 휘도 변화율)

  • Kang, Young-Reep;Moon, Kil-Hwan
    • Journal of the Korean Graphic Arts Communication Society
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    • v.29 no.2
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    • pp.33-44
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    • 2011
  • The inorganic powder EL lamp was made by screen printing technique with a phosphor ink and a dielectric ink. The thickness of a phosphor ink layer and a dielectric ink layer is $35{\mu}m$ and $54{\mu}m$ respectively. A increasing ratio of the luminance of inorganic powder EL lamp to be a 1P1PD-phosphor ink layer in which increased voltage at constant frequency is higher 12% than when increased frequency at constant voltage. It is higher 57% than when increased frequency at constant voltage that the rate of increase of the luminance of inorganic powder EL lamp to be a 2PD-phosphor ink layer in which increased voltage at constant frequency. Finally, when increased voltage at constant frequency, a increasing ratio of the luminance of inorganic powder EL lamp to be a 2PD-phosphor ink layer is higher about 40% than that to be a 1P1PD-phosphor ink layer.

Effects of Advertising according to the Altering Color Coordinates of the Outdoor Billboards a Inorganic Powder EL Lamp That was made by Screen Printing Technique (스크린 인쇄 기법에 의해 제작된 옥외 광고용 분산형 무기 EL 램프의 색좌표 변화와 광고 효과)

  • Moon, Kil-Hwan;Lee, Kwang-Sook
    • Journal of the Korean Graphic Arts Communication Society
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    • v.30 no.1
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    • pp.47-58
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    • 2012
  • The inorganic powder EL lamp was made by screen printing technique with a phosphor ink and a dielectric ink. Value of color coordinates X and Y increased under the condition of supplying driving power to the inorganic powder EL lamp and changing voltage with constant frequency. When frequency was changed under the constant voltage, value of color coordinates X and Y were decreased with increasing frequency. However, level of change of color coordinates X was different from color coordinates Y. When voltage was increased under constant frequency, changing degree of color coordinates X and Y shows similarity. But under the constant voltage with changing frequency, color coordinates X and Y were differently changed that degree of change of color coordinates Y showed five times more than that of color coordinates X. As increasing thickness of phosphor ink and dielectric ink, level of voltage and frequency, color coordinates X and Y were slightly changed. According to the thickness of phosphor ink and dielectric ink, and level of voltage and frequency, color coordinate of color light was changed. Frequency was most important element influencing on the change of color coordinate.

A Study on Applying an Electrolytic Plating to a Screen Printing (스크린 인쇄와 전해 도금의 응용에 관한 연구)

  • 강봉근
    • Journal of the Korean Graphic Arts Communication Society
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    • v.18 no.2
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    • pp.133-141
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    • 2000
  • Enhanced the value of badge good with the gold plating of emblem, sports pictogram, mascot in 2002 Asian Game and World Cup, applying the plating and coating technique to screen printing. In addition, tourist and characteristic goods were of great value and image of visual communication displayed outside. After the screen printing in the surface of stainless steel, it obtained the plate coloring of beautiful a black glossy with a black Ru plating. At the identical surface, it did that the electrodeposition coating process in order to making a conductor state of image areas and a nonconductor state of nonimage areas. After the electrodeposition process, it removed the printing ink of image areas with solvent. A manufacturing process, it removed the printing ink of image areas with solvent. A manufacturing process completed with copper, nickel and gold plating at bared metal surface.

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Effect of Base Paper and Binder on the Printability of Coated Paper (코팅원지 및 바인더가 코팅지의 인쇄적성에 미치는 영향)

  • 이용규
    • Journal of the Korean Graphic Arts Communication Society
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    • v.15 no.2
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    • pp.57-76
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    • 1997
  • A color halftoning is the process of generating halftone images for the different color plans, for example, cyan, magenta, yellow, and black for a offset printing device. A conventional halftone technique, so called AM screening, is simple and easy to implement, but the halftoned dot patterns by using this method is not free for the moire` fringe. Moire` patterns are caused the power spectrum distribution on low spatial frequency domain. To avoid Moire` patterns, the conventional screen require the different screen angles for each color plans. Recently, Ultra-fine and 7 color printing methods are developed to expend the color gamut. In 7 color printing method must be used the halftone technique of random and blue noise characteristic to avoid Moire` fringe.

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The Analysis on the Effect of Improving Aspect Ratio and Electrode Spacing of the Crystalline Silicon Solar Cell (결정질 실리콘 태양전지의 전극 종횡비 개선과 전극 간 간격이 효율에 미치는 영향 분석)

  • Kim, Min Young;Park, Ju-Eok;Cho, Hae Sung;Kim, Dae Sung;Byeo, Seong Kyun;Lim, Donggun
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.27 no.4
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    • pp.209-216
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    • 2014
  • The screen printed technique is one of the electrode forming technologies for crystalline silicon solar cell. It has the advantage that can raise the production efficiency due to simple process. The electrode technology is the core process because the electrode feature is given a substantial factor (for solar cell efficiency). In this paper, we tried to change conditions such as squeegee angle $55{\sim}75^{\circ}$, snap off 0.5~1.75 mm, printing pressure 0.6~0.3 MPa and 1.6~2.0 mm finger spacing. As a result, the screen printing process showed an improved performance with an increased height higher finger height. Optimization of fabrication process has achieved 17.48% efficiency at screen mesh of 1.6 mm finger spacing.

A Study on a change of image in packing quantity (통꾸밈량에 대한 화선 변화에 관한 연구)

  • SonYeopKwak
    • Journal of the Korean Graphic Arts Communication Society
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    • v.9 no.1
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    • pp.45-51
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    • 1991
  • Commercially available paper stickers, electrostatic stickers, and metal sticker generally involve process of printing on the substrate and die-cutting to peel the sticker off the release paper. Using plastisol ink and multi-layer screen printing technique, a process of non die-cutting sticker with same image on both sides was developed. It was also possible to prevent color mixing phenomena at image edge part by printing narrow lines of black ink along the borderline.

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