Department of Industrial Engineering Da-Yeh University 112, Shan-Jiau Road, Da-Tsuen, Changhua, Taiwan, 51505, R.O.C.
Department of Industrial Engineering and Management Oriental Institute of Technology
Liquid Crystal Display (LCD) monitors have gradually replaced the Cathode Ray Tube (CRT) monitors as the major visual display terminals (VDT). The factors that may affect users' performance on LCD need investigation. This study investigated the effects of polarity (light Landolt-C on dark background and dark Landolt-C on light background) and luminance contrast (2:1, 3:1, 4:1, 6:1, and 8:1) on subjects' visual acuity and subjective preference by measuring the subjects' performance and preference on a discriminating task. Analysis of results showed that visual acuity was not significantly affected by polarity; however, polarity was a significant factor for subjective preference. When the polarity was dark-on-light, the subjects' subjective preferences were higher than when it was light-on-dark. Luminance contrast was a significant factor for both users' visual acuity and subjective preference. The subjects' visual acuity and subjective preference increased as luminance contrast increased.
Keywords:LCD, polarity, luminance contrast, visual acuity, subjective preference
Keywords:agent-based system, decision-making, chaos
Cite this article as: An-Hsiang Wang and Ming-Te Chen, "Effects of Polarity and Luminance Contrast of LCD on Users' Visual Acuity and Subjective Preference," Journal of the Chinese Institute of Industrial Engineers, 18, 95-101 (2001).