Response characteristics of gray levels in the TN and IPS modes have been studied. The value of τt-max/τ-min of gray levels in the IPS mode was below 2.5. The value was extremely small compared with that of the TN mode, which was about 20. We also elucidated that these response characteristics could be explained qualitatively from elastic energy density. It was revealed that response characteristics depend on the LC switching mode. In order to improve the response characteristics of gray levels, the IPS mode is more advantageous than the conventional TN mode.
