Surface modification of liquid crystal on LCD panel by microwave plasma

Li Choung Chiang, Pai Haung Shih, Yi Kuo Chang, Shan Yuan Hsieh, Juu En Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A microwave plasma system was adopted for the treatment of liquid crystal on LCD panels. The elemental analysis and contact angle observation were performed to evaluate the modification of liquid crystal by plasma treatment. And different atmosphere and treatment time were varied during plasma operation to discuss their influences on the cleaning of liquid crystal on LCD panels. The experimental results indicated that microwave plasma is effective for the modification of characteristics of liquid crystal. The weight ratio of major element in liquid crystal was varied after plasma treatment. In addition, the change in contact angle between the surface of liquid crystal and water also revealed that the plasma process could improve the hydrophilicity of liquid crystal surface and make the water cleaning of liquid crystal on LCD panels to be possible. In this study, oxygen plasma demonstrated a good performance in surface modification of liquid crystal. And the LCD panel treated by oxygen plasma, a 40% cleaning efficiency of liquid crystal could be obtained by direct water cleaning of LCD panel. The plasma treatment is therefore concluded to be a feasible process for the cleaning and recycling of waste LCD panels.

Original languageEnglish
Title of host publication100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007
PublisherAir and Waste Management Association
Pages2251-2255
Number of pages5
ISBN (Electronic)9781604238464
Publication statusPublished - 2007 Jan 1
Event100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007 - Pittsburgh, United States
Duration: 2007 Jun 262007 Jun 29

Publication series

Name100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007
Volume4

Other

Other100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007
CountryUnited States
CityPittsburgh
Period07-06-2607-06-29

All Science Journal Classification (ASJC) codes

  • Pollution
  • Water Science and Technology
  • Waste Management and Disposal

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  • Cite this

    Chiang, L. C., Shih, P. H., Chang, Y. K., Hsieh, S. Y., & Chang, J. E. (2007). Surface modification of liquid crystal on LCD panel by microwave plasma. In 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007 (pp. 2251-2255). (100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007; Vol. 4). Air and Waste Management Association.