摘要 |
A semiconductor device (100) is provided with a power supply circuit (104) having a function to generate a power supply voltage from a wireless signal and an A/D converter circuit (110) having a function to detect the strength of the wireless signal by an A/D conversion of a voltage generated from the wireless signal. This enables to provide a semiconductor device which does not require replacement of batteries, has few limitations on its physical shape and mass, and has a function to detect a physical position. By formation of the semiconductor device with use of a thin film transistor formed over a plastic substrate, a lightweight semiconductor device, which has flexibility in physical shape and a function to detect a physical location, can be provided at low cost.
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申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KUROKAWA, YOSHIYUKI;IKEDA, TAKAYUKI;ENDO, MASAMI;DEMBO, HIROKI;KAWAE, DAISUKE;INOUE, TAKAYUKI;KOZUMA, MUNEHIRO |