Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Effect of Poly(vinyl alcohol) Adhesives on the Dimensional Stability of LCD Polarizer

폴리(비닐 알코올) 접착제가 LCD 편광판의 치수안정성에 미치는 영향

  • Suh, Ju-Hee (Center for Photofunctional Energy Materials, Department of Polymer Science & Engineering, Dankook University) ;
  • Shin, Jung-Woo (Center for Photofunctional Energy Materials, Department of Polymer Science & Engineering, Dankook University) ;
  • Kim, Hyo-Kap (Center for Photofunctional Energy Materials, Department of Polymer Science & Engineering, Dankook University) ;
  • Kim, Han-Sung (Hyosung Corp.) ;
  • Kim, Yong-Won (Hyosung Corp.) ;
  • Kang, Ho-Jong (Center for Photofunctional Energy Materials, Department of Polymer Science & Engineering, Dankook University)
  • 서주희 (광 에너지 소재 연구센터 단국대학교 고분자시스템공학과) ;
  • 신정우 (광 에너지 소재 연구센터 단국대학교 고분자시스템공학과) ;
  • 김효갑 (광 에너지 소재 연구센터 단국대학교 고분자시스템공학과) ;
  • 김한성 ((주)효성) ;
  • 김용원 ((주)효성) ;
  • 강호종 (광 에너지 소재 연구센터 단국대학교 고분자시스템공학과)
  • Received : 2010.06.22
  • Accepted : 2010.08.04
  • Published : 2010.11.25
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Abstract

Dimensional stability of LCD polarization film consisted of triacetyl cellulose (TAC) and poly(vinyl alcohol) (PVA) film has been studied and especially, the effect of PVA adhesive on the dimensional stability has been considered as function of deacetylation and molecular weight of PVA adhesive. The maximum adhesion strength between TAC and PVA film was obtained in the laminate using PVA adhesive with 70% of OH content and the effect of molecular weight on the adhesion strength was only pronounced in the laminate using PVA adhesive with OH content above 70%. It was found that the optimum dimensional stability of TAC/PVA/TAC laminate (polarizing film) was obtained when applied PVA adhesive has low molecular weight and it was more dependent upon the OH content than the adhesion strength between TAC and PVA films.

LCD에 사용되는 편광판 제조 시, 치수안정성 및 내습성 향상을 위한 트리아세틸셀룰로오스(TAC) 필름 접착에 적용되는 폴리(비닐 알코올)(PVA) 접착제의 가수화도 및 분자량이 편광판 치수안정성에 미치는 영향을 살펴보았다. TAC 필름과 PVA 편광판의 접착력은 접착제의 탈아세틸화가 70%에서 최대가 되며 PVA 분자량은 가수화도가 70% 이하에서는 접착력에 영향을 미치지 않는 반면 70% 이상에서는 아세틸화에 의한 분자량 감소가 접착력에 영향을 줌을 알 수 있다. 편광판의 치수안정성은 분자량이 낮은 접착제를 사용할 경우 안정적이며 필름과 편광판의 접착력보다는 접착제의 가수화도에 더 의존적임을 확인할 수 있었다.

Keywords

References

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