Organic electronics based on organic semiconductors as an active layer have been extensively researched as next-generation electronic devices. To develop the market for organic electronic devices such as integration circuits and sensors, the carrier mobility (hereinafter referred to as the mobility) is an important parameter for device performance and needs to be improved significantly. Additionally, considering applicable organic electronics, organic semiconductors must exhibit the following features: 1) chemical and thermal stabilities during the device fabrication process and in the operating environment, 2) device durability under ambient air and bias stress, and 3) solution-processability. To achieve these requirements, innovations in molecular design technologies are needed.