Dai Nippon Printing Co., Ltd.

Shinobu Sakurada

Masanori Akada

Jun-Ichi Hanna

Hiroki Maeda

Ken Tomino

An organic semiconductor material having high charge mobility characteristics and an organic semiconductor element is provided. The organic semiconductor material has rodlike low-molecular liquid crystallinity, including a skeleton structure comprising L 6 &#x3c0; electron aromatic rings, M 10 &#x3c0; electron aromatic rings, and N 14&#x3c0; electron aromatic rings, wherein L, M, and N are each an integer of 0 (zero) to 4 and L+M+N=1 to 4; and a terminal structure attached to both ends of the skeleton structure. The terminal structure can develop liquid crystallinity. The phase angle &#x3b8; of impedance of the organic semiconductor material is &#x2212;80&#xb0;&#x2266;&#x3b8;&#x2266;&#x2212;90&#xb0; as determined in the measurement of impedance in a frequency f range of 100 Hz&#x2266;f&#x2266;1 MHz in such a state that the organic semiconductor material in an isotropic phase state is held between a pair of opposed substrates with an interelectrode spacing of 9 &#x3bc;m.

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Gyoda, Japan

Shinobu Sakurada