Infrared emitting material using infrared wavelength manipulation

Abstract

Infrared (IR) display technology implements a display using IR radiation. Whereas ordinary visible displays that output digital data in the visible spectral range are detectable to human eyes, an IR display outputs data outside the visible spectral range. This study looks at the possibility of expanding the color-replication spectrum beyond the visible range by applying IR wavelength separation techniques. We developed a new display technology that uses the same driving method as general display technology but emits IR radiation that cannot be seen by humans. The IR wavelength region was separated into three regions, similar to the RGB regions of visible displays, and an IR display capable of outputting images and movies was produced by combining these IR emissions. The implementation of various characters, figures, and videos was demonstrated. The present method can be applied to the production of single displays based on IR radiation, as well as to the production of multi-displays whereby an IR display is mounted on top of a visible light display on a single device. This technology can be used to provide a smart digital information environment where humans can selectively visualize or conceal information.

논문 정보
Applied Materials Today  Volume 21, December 2020, 100811
Received 10 July 2020, Revised 6 August 2020, Accepted 24 August 2020, Available online 1 September 2020.

Authors: Taekyung Lim, Tae Kyung Lee, Sang-Mi Jeong, Jeong Hyeok Pak, Yong Kyu Choi, Sang Kyu Kwak, Sanghyun Ju

DOI : https://doi.org/10.1016/j.apmt.2020.100811