Lighting,font style,and polarity on visual performance and visual fatigue with electronic paper displays |
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| Authors: | I-Hsuan Shen Kong-King Shieh Chih-Yu Chao Der-Song Lee |
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| Affiliation: | 1. Department of Occupational Therapy, Chang Gung University, Tao-Yuan, Taiwan;2. Department of Health Care Administration, Oriental Institute of Technology, Taipei, Taiwan;3. Department of Industrial Management, National Taiwan University of Science and Technology, Taipei, Taiwan;4. Department of Industrial Management, Oriental Institute of Technology, 58, Sec. 2, Sihchuan Rd., Pan-Chiao City, Taipei 220, Taiwan |
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| Abstract: | Visual performance and visual fatigue of electronic paper displays (electrophoretic display and cholesteric liquid crystal display) under ambient illuminances and light sources were studied and compared with paper. Forty-eight participants participated in a character-search task in the experiment. The results showed that search speed depends on the illuminance but not light source. Search speed increased as illumination increased from 300 lx (45.6 sec), 700 lx (44.18 sec) to 1500 lx (43.24 sec). The effect of medium display and polarity on accuracy was also significant. Accuracy was greater for electrophoretic display and positive polarity. However, the effect of illuminance and light source on visual fatigue was not statistically significant. Based on the results of this study, it seems that E-paper displays may need greater illumination (700 lx or higher). |
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