Effect of UV intensity on the electro-optical properties of polymer dispersed liquid crystal lens for smart electronic glasses

Jaeyong Kim, Jeong In Han

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Polymer dispersed liquid crystal (PDLC) lenses were made from a mixture of prepolymer (NOA 65) and E7 liquid crystal (LC). The mixture of polymer dispersed in LC was polymerized by ultraviolet (UV) irradiation in the polymerization induced phase separation process. With varying UV curing intensity in this process, the electrooptical properties of PDLC lens device such as transmittance, driving voltage, response times, contrast ratio (C/R) and slope of the linear region of the transmittance-voltage were measured and optimized for application to smart electronic glasses with auto-shading and auto-focusing functions. The optimum UV intensity for the PDLC lenses was more than 580 μW/cm2. These results were improved compared to our previously reported data[1] for the application of these PDLC lenses to smart electronic glasses with auto-shading and/or auto-focusing functions.

Original languageEnglish
Pages (from-to)665-669
Number of pages5
JournalElectronic Materials Letters
Volume10
Issue number3
DOIs
StatePublished - May 2014

Keywords

  • auto-shading
  • autofocusing
  • PDLC
  • polymer dispersed liquid crystal
  • smart electronics glasses
  • UV intensity

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