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Proceedings Paper

Measurement of MTFs for monochrome and color liquid crystal displays
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Paper Abstract

We measured modulation transfer functions (MTFs) of liquid crystal displays (LCDs) by rectangular waveform analysis. This method is taking a picture of the bar pattern on the monitor surface with a digital camera, and analyzing the picture with a personal computer. The monitors used are the monochrome LCDs of 1M(about 1 million of the number of pixels), 2M, 3M, and 5M, and the color LCDs of 1M, 2M, 3M. The display of 2M used IPS system and VA system. 3M and 5M of the monochrome LCDs were examined when there was a protective filter or not. Two or three displays are used for each system. In both the monochrome and the color LCDs, MTFs became high as the matrix size increased. In the monochrome LCDs, MTF in horizontal direction was higher than MTF in vertical direction. And there was no difference when a protective filter was used or not. MTFs of the color LCDs had little difference in horizontal direction and the vertical direction. MTFs of the LCDs are influenced on the form and the fill factor of a pixel, and composition of sub-pixels.

Paper Details

Date Published: 10 March 2006
PDF: 8 pages
Proc. SPIE 6141, Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display, 61411P (10 March 2006); doi: 10.1117/12.651634
Show Author Affiliations
Akiko Horii, Nagoya Univ. (Japan)
Miho Takamura, Nagoya Univ. (Japan)
Katsuhiro Ichikawa, Nagoya Univ. (Japan)
Yoshie Kodera, Nagoya Univ. (Japan)
Mitsuru Ikeda, Nagoya Univ. (Japan)
Takeo Ishigaki, Nagoya Univ. (Japan)

Published in SPIE Proceedings Vol. 6141:
Medical Imaging 2006: Visualization, Image-Guided Procedures, and Display
Kevin R. Cleary; Robert L. Galloway, Jr., Editor(s)

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