Photo detection circuit, method of controlling the same, electro-optical panel, electro-optical device, and electronic apparatus
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United States of America Patent
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May 24, 2011
Issued Date -
N/A
app pub date -
Aug 8, 2005
filing date -
Oct 12, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A photo detection circuit includes a photodiode whose cathode is connected to a high-potential-side power supply and whose anode is connected to a connection point; a capacitor element provided between the connection point and a low-potential-side power supply; and a switching element, provided between the connection point and the low-potential-side power supply, that switches on and off with a predetermined period. A voltage signal of the connection point is extracted as an output signal.
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