DOI QR코드

DOI QR Code

A Comparative Evaluation on Visual Performance of CRT and TFT-LCD as Desktop Computer Displays

데스크탑용 CRT와 TFT-LCD의 시각 작업수행도 비교·평가

  • 김상호 (금오공과대학교 신소재시스템공학부 산업시스템공학전공) ;
  • 최경임 (포항공과대학교 기계산업공학부)
  • Published : 2002.04.30

Abstract

Two experiments were carried out to compare the suitability in visual tasks between cathode-ray tube (CRT) and thin film transistor-liquid crystal display (TFT-LCD). In the first experiment, the subjects were requested to detect pre-assigned target words or icons among distracters presented under time-invariant (static) image mode. The subjects' visual performance and fatigue were assessed while carrying out search tasks with dim and bright ambient light conditions. Significant interaction effects were found among displays, task types, and ambient light conditions. Due to visual fatigue, the subjects' accommodative power decreased in the end of task and the degradation was more significant for the CRT users and under bright ambient light. IN the second experiment, the subjects performed information processing task with time-varying road signs at a driving simulator to assess interaction effects between display types and changing speed of dynamic image. The perception time using TFT-TCD was shorter under slow image change while that of CRT was shorter rapid image change. Findings from this study suggest that, to improve visual task performance, users should carefully select their visual display type depending on the task to be performed.

Keywords

References

  1. 이종덕 외,디스플레이 공학 I, 청범출판사: 서울,2000
  2. 이상훈,추성훈,'FPD에 대응한 CRT의 최근기술동향 및 전망',한국정보디스플레이학회지,2(5), 12-19, 2001
  3. 이이상,‘액정 TV의 현황 및 전망’,한국정보디스플레이학회지,2(1), 25-29, 2001
  4. 장진,‘TFT-LCD 산업 경쟁력 향상 방안’,한국정보디스플레이학회지,2(1), 9-16, 2001
  5. 한수덕,‘CRT 시장과 기술,그리고 향후 전망‘,한국정보디스플레이학회지,2(5), 6-11, 2001
  6. 松本iE一, 전자 디스플레이,성안당: 서울, 1998
  7. 中村芳知 등,‘高輝度マルチメディアブラウン管(17形 Diamondtron M12管) の開發',月刊ディスプレイ 01 7月号,23-28, 2001
  8. Bastien J.M.C, et. al., 'The Ergonomic Criteria and the ISO/DIS 9241-10 Dialogue Principles: A Pilot Comparison in an Evaluation Task', Interacting with Computers, 11, 299-322, 1999
  9. Besuijen, K. and Spenkelink G.P.J,'Standardizing Visual Display Quality', Displays, 19, 67-76, 1998
  10. Boschman M.e. and Roufs, J.A.J., 'TextQuality Metrics for Visual Display Units: II. An Experimental Survey', Displays, 18, 45-64, 1997
  11. Chi, C'F, and Lin, F.T., 'A Comparison of Seven Visual Fatigue Assessment Techniques in Three Data-Acquisition VDT Tasks', Human Factors, 40(4), 577-500, 1998
  12. Grandjean, E., Ergonomics in Computerized Offices, Taylor & Francis: London, 1987
  13. Lindfors, M., 'Accuracy and Repeatability of the ISO 9241-7 Test Methods', Displays, 19, 3-16, 1998
  14. MacKenzie, I.S. et. al., 'Effects of Output Display and Control-Display Gain on Human Performance m Interactive Systems', Behaviour and Infonnation Technology, 13(5), 328-337, 1994
  15. Menozzi, M et. al., 'CRT versus LCD: A Pilot Study on Visual Performance and Suitability of Two Display Technologies for Use in Office Work', Displays, 20, 3-10, 1999
  16. Menozzi, M et. al., 'CRT versus LCD: Effects of Refresh Rate, Display Technology and Background Luminance in Visual Performance', Displays, 22, 79-85, 2001
  17. Roufs, J,A.J, and Boschman M.C., 'Text Quality Metrics for Visual Display Units: I. Methodological Aspect', Displays, 18, 37-43, 1997
  18. Saito, S. et. al., 'Physiological Indices of Visual Fatigue due to VDT Operation: Pupillary Reflexes and Accommodative Responses', Industrial Health, 32, 57-66, 1994
  19. Saito, S. et. al., 'Visual Comfort using Different VDT Screens', International Journal of Human-Computer Interaction. 5(4), 313-323, 1993
  20. Sanders, MS. and McCormick, E.J., Human Factors in Engineering and Design, 7th Ed.. McGraw-Hill. 1993