| 摘要 |
A semiconductor device and an electronic device using the same are provided to detect light stably regardless of external conditions. A semiconductor device includes a first photodiode(101), a second photodiode(102), a light shielding film, a first circuit group(103), a second circuit group(104), and a correction circuit(105). The first photodiode detects light. The light shielding film protects the second photodiode from light. The first circuit group has a voltage follower circuit receiving the output from the first terminal of the first photodiode. The second circuit group regulates the output from the first terminal of the second photodiode to reference voltage under a predetermined temperature. The correction circuit(105) receives the outputs from the first and second circuit groups and performs addition or subtraction with respect to the outputs. The second terminal of the first photodiode receives reference voltage. The second terminal of the second photodiode receives voltage such that a forwarding bias is applied to the second photodiode.
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