Realization of 95% of the Rec. 2020 color gamut in a highly efficient LCD using a patterned quantum dot film

Hyo Jun Kim, Min Ho Shin, Jae Yong Lee, Ji Hoon Kim, Young Joo Kim

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

An optically efficient liquid-crystal display (LCD) structure using a patterned quantum dot (QD) film and a short-pass filter (SPF) was proposed and fabricated. The patterned QD film contributed to the generation of 95% in the area ratio (or 90% in the coverage ratio) of the Rec. 2020 color gamut. This was achieved by avoiding the problem of interaction between white backlight and broad transmittance spectra of color filters (CFs) as seen in a conventional LCD with a mixed QD film as a reference. The patterned QD film can maintain the narrow bandwidth of the green and the red QD colors before passing through the CFs. Additionally, the optical intensities of the red, green, and blue spectra were enhanced to 1.63, 1.72, and 2.16 times the reference LCD values, respectively. This was a result of separated emission of the red and green patterned QD film and reflection of the red and green light to the forward direction by the SPF.

Original languageEnglish
Pages (from-to)10724-10734
Number of pages11
JournalOptics Express
Volume25
Issue number10
DOIs
Publication statusPublished - 2017 May 15

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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