A reflective thermochromic display fabricated by a very simple method using three kinds of thermochromic pigments is produced and its thermo-optical characteristics are investigated. The display exhibits maximum red, green, and blue reflectances of 38%, 30%, and 35%, respectively. The reflective display cell shows continuous gray color with changing temperature, which is crucial for multicolor displays. It also shows an excellent viewing angle above 80° without any of the additional optical components that are required in liquid crystal displays. We expect that this display technology will be used for outdoor billboard information display applications.
© 2012 Optical Society of America
Original Manuscript: March 6, 2012
Revised Manuscript: April 30, 2012
Manuscript Accepted: May 6, 2012
Published: June 20, 2012
Kyong Chan Heo, Youngku Sohn, Jonghoon Yi, Jin Hyuk Kwon, Phil Kook Son, and Jin Seog Gwag, "Reflective color display using thermochromic pigments," Appl. Opt. 51, 4246-4249 (2012)