폴리(비닐 알코올) 접착제가 LCD 편광판의 치수안정성에 미치는 영향

서주희; 신정우; 김효갑; 김한성; 김용원; 강호종; Juhee Suh,; Jungwoo Shin; Hyokap Kim; Hansung Kim; Yongwon Kim; Ho-Jong Kang

Polymer(Korea), Vol.34, No.6, 560-564, November, 2010

Export Citation

폴리(비닐 알코올) 접착제가 LCD 편광판의 치수안정성에 미치는 영향

Effect of Poly(vinyl alcohol) Adhesives on the Dimensional Stability of LCD Polarizer

서주희, 신정우, 김효갑, 김한성¹, 김용원¹, 강호종 ^†

단국대학교 고분자시스템공학과 광 에너지 소재 연구센터
¹(주)효성

Juhee Suh,, Jungwoo Shin, Hyokap Kim, Hansung Kim¹, Yongwon Kim¹, and Ho-Jong Kang^†

Center for Photofunctional Energy Materials, Department of Polymer Science & Engineering, Dankook University, #26, Jukjeon-dong Sugi-ku, Yongin-si, Gyeonggi-do 448-160, Korea
¹Hyosung Corp., 183 Hoge-dong, Dongan-ku, Anyang-si, Gyeonggi-do 431-080, Korea

E-mail:

초록

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.

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.

Keywords:dimensional stability;LCD polarizer;adhesives;triacetyl cellulose;poly(vinyl alcohol)

[References]

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Mizoguchi R, Kobayashi K, Shimomura T, Kobayashi S, Display, 20, 3 (1990)
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de Gennes PG, J. Chem. Phys., 55, 572 (1971)

[Related Articles]

[1] Quintella CM, Lima AMV, Goncalves CC, Watanabe YN, Mammana AP, Schreiner MA, Pepe I, Pizzo AA, J. Colloid Interface Sci., 262(1), 221 (2003)

[2] Kawski A, Kubicki A, Kuklinski B, Gryczynski I, J. Photoch. Photobio. A, 71, 2 (1993)

[3] Morozumi S, Advances in Electronics and Electron Physics, 77, 1 (1990)

[4] Sabnis RW, Display, 20, 3 (1999)

[5] Mizoguchi R, Kobayashi K, Shimomura T, Kobayashi S, Display, 20, 3 (1990)

[6] Granqvist CG, Azens A, Hjelm A, Kullman L, Niklasson GA, Roonnow D, Strøømme Mattsson M, Veszelei M, Vaivars G, Sol. Energy, 63, 4 (1998)

[7] Wu P, Rao N, Opt. Mater., 21, 1 (2003)

[8] Ryuichi T, Shoichi M, Naoyuki T, Int. J. Appl. Radiat. Isot., 3, 5 (1984)

[9] Nakajama H, Fukagawa N, Nishiura Y, Yasuda T, Ito T, Mihayashi K, J. Photopolym. Sci. Technol., 19, 2 (2006)

[10] Tagaya A, Ohkita H, Mukaoh M, Sakaguchi R, Koike Y, Science, 301, 812 (2003)

[11] Shimamoto S, Gray DG, Cellulose, 6, 15 (1999)

[12] Zakuradaeva NP, Ivanova TA, Fibre Chem., 7, 5 (1986)

[13] Demerlis CC, Schoneker DR, Food Chem. Toxicol., 41, 3 (2003)

[14] Haag AP, Geesey GG, Mittleman MW, Inter. J. Adhes. Adhes., 26, 3 (2006)

[15] Schmedlen RH, Masters KS, West JL, Biomaterials, 23, 2 (2002)

[16] Gallego S, Neipp C, Ortuno M, Fernandez E, Belendez A, Pascual I, Opt. Commun., 281, 6 (2008)

[17] Nakano K, Tozuka Y, Takeuchi H, Int. J. Pharm., 354, 1 (2008)

[18] Li W, Zheng Y, Cheng R, Polymer, 49, 21 (2008)

[19] Brandrup J, Edmund HI, Eric AG, Akihiro A, Bloch DR, Polymer Handbook, John Wiley &Sons (2005)

[20] Wool RP, O'Connor KM, J. Appl. Phys., 52, 5953 (1981)

[21] Connor KMO, Wool RP, Bull. APS, 30, 389 (1985)

[22] de Gennes PG, J. Chem. Phys., 55, 572 (1971)