Theoretical analysis of water droplet drying on different substrates on liquid crystal display panels heated with infrared radiation

Changmin Lee, Jinhee Jang, Jae Won Hahn

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

To analyze the drying process of water droplets on glass panels in liquid crystal displays (LCDs), we calculated the evaporation time of water droplets under infrared radiation heating. Assuming that the water droplets mainly sit on either a glass substrate or copper circuit line in LCD panels, we theoretically analyzed the heat transfer mechanisms during the evaporation process of the water droplets on the different substrates by including substrate reflection. From the calculations, we found that heat conduction between the water droplets and the copper substrate plays an important role in the beginning of the evaporation, resulting in longer evaporation times due to heat loss. To confirm the mechanism, we calculated the drying time of 150 µm droplets in the substrates, comparing the conduction and radiation energy. Finally, we calculated the process parameters of water droplet drying in the LCD industry.

Original languageEnglish
Pages (from-to)557-562
Number of pages6
JournalDrying Technology
Volume34
Issue number5
DOIs
Publication statusPublished - 2016 Apr 3

Fingerprint

infrared radiation
Liquid crystal displays
drying
Drying
liquid crystals
Infrared radiation
Water
Substrates
evaporation
Evaporation
water
Copper
radiant heating
copper
glass
Glass
conductive heat transfer
Heat losses
Heat conduction
heat transfer

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

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abstract = "To analyze the drying process of water droplets on glass panels in liquid crystal displays (LCDs), we calculated the evaporation time of water droplets under infrared radiation heating. Assuming that the water droplets mainly sit on either a glass substrate or copper circuit line in LCD panels, we theoretically analyzed the heat transfer mechanisms during the evaporation process of the water droplets on the different substrates by including substrate reflection. From the calculations, we found that heat conduction between the water droplets and the copper substrate plays an important role in the beginning of the evaporation, resulting in longer evaporation times due to heat loss. To confirm the mechanism, we calculated the drying time of 150 µm droplets in the substrates, comparing the conduction and radiation energy. Finally, we calculated the process parameters of water droplet drying in the LCD industry.",
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Theoretical analysis of water droplet drying on different substrates on liquid crystal display panels heated with infrared radiation. / Lee, Changmin; Jang, Jinhee; Hahn, Jae Won.

In: Drying Technology, Vol. 34, No. 5, 03.04.2016, p. 557-562.

Research output: Contribution to journalArticle

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