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실버 나노분말을 이용한 메탈메쉬용 페이스트의 충전 및 와이핑 특성 KCI 등재

Filling and Wiping Properties of Silver Nano Paste in Trench Layer of Metal Mesh Type Transparent Conducting Electrode Films for Touch Screen Panel Application

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한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

A metal mesh TCE film is fabricated using a series of processes such as UV imprinting of a transparent trench pattern (with a width of 2-5 μm) onto a PET film, filling it with silver paste, wiping of the surface, and heatcuring the silver paste. In this work nanosized (40-50 nm) silver particles are synthesized and mixed with submicron (250-300 nm)-sized silver particles to prepare silver paste for the fabrication of metal mesh-type TCE films. The filling of these silver pastes into the patterned trench layer is examined using a specially designed filling machine and the rheological testing of the silver pastes. The wiping of the trench layer surface to remove any residual silver paste or particles is tested with various mixture solvents, and ethyl cellosolve acetate (ECA):DI water = 90:10 wt% is found to give the best result. The silver paste with 40-50 nm Ag:250-300 nm Ag in a 10:90 wt% mixture gives the highest electrical conductance. The metal mesh TCE film obtained with this silver paste in an optimized process exhibits a light transmittance of 90.4% and haze at 1.2%, which is suitable for TSP application.

목차
1. 서 론
 2. 실 험
  2.1. 나노 실버 분말 합성
  2.2. 나노 실버 페이스트용 바인더
  2.3. 나노 실버 페이스트 제조
  2.4. 나노 실버 페이스트의 유변학적 특성 및 TGA측정
  2.5. 나노 실버 페이스트 충진
  2.6. 와이핑 특성 평가 및 전도성 측정
  2.7. 광학적 특성 측정
 3. 결과 및 고찰
  3.1. 나노 실버 분말의 합성 결과
  3.2. 나노 실버 페이스트의 점도 및 점탄성 결과
  3.3. 용제에 따른 와이핑 특성
  3.4. 3종류의 나노 실버 페이스트 충진 및 전도성 결과
  3.5. 최적화된 패턴(베젤 및 센서) 및 광학적 특성 결과
 4. 결 론
 감사의 글
 References
저자
  • 김기동(부경대학교 인쇄공학과) | Gi-Dong Kim
  • 남현민(부경대학교 인쇄공학과) | Hyun-Min Nam
  • 양상선(한국기계연구원 부설 재료연구소 분말, 세라믹 연구본부) | Sangsun Yang
  • 박이순(울산과학기술원 신소재공학부) | Lee-Soon Park
  • 남수용(부경대학교 인쇄공학과) | Su-Yong Nam Corresponding Author