Response time evaluation for LCD display modes and its relationship to moving image perception

Shunji Suzuki; Mikio Suzuki; Hideyuki Takizawa; Naoyuki Nakanishi

doi:10.1117/12.463794

26 April 2002 Response time evaluation for LCD display modes and its relationship to moving image perception

Shunji Suzuki, Mikio Suzuki, Hideyuki Takizawa, Naoyuki Nakanishi

Author Affiliations +

Proceedings Volume 4657, Projection Displays VIII; (2002) https://doi.org/10.1117/12.463794
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

The response time for each TFT-LCD display mode, such as twisted nematic (TN), multi-domain vertical align (MVA), and in-plane switching (IPS) mode, has been measured and analyzed especially in grayscale. The characterization of each display mode has clarified the panel design dependence, especially that of IPS mode LCD. Several display modes have also been subjectively evaluated in view of moving picture appearance by comparing each LCD display monitor to CRT monitor. For moving picture image, subjective evaluation performed by selecting three display test patterns with two moving speeds. Subjective evaluation result is related to the three response parameters, 1) bi-level response time between L255 (brightest) and L0 (darkest), which is conventional definition of response time, 2) sum of average and variance of all response times including gray-levels (calculated twenty response times), and 3) average response time between middle and gray-level and next levels (L127 (reversible reaction) L191 and L127 (reversible reaction) L63). Among above parameters, the average response time of middle grayscales (to and from L127) shows good relationship with subjective evaluation result. The perception speed of each LCD monitor has been also subjectively evaluated to verify the relation to each response parameter. The target for the appropriated response parameter will be discussed.

Citation Download Citation

Shunji Suzuki, Mikio Suzuki, Hideyuki Takizawa, and Naoyuki Nakanishi "Response time evaluation for LCD display modes and its relationship to moving image perception", Proc. SPIE 4657, Projection Displays VIII, (26 April 2002); https://doi.org/10.1117/12.463794

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