Semiconductor device
Number of patents in Portfolio can not be more than 2000
United States of America
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Jan 7, 2020
Grant Date -
Feb 22, 2018
app pub date -
Oct 31, 2017
filing date -
Oct 31, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A low reflectance film with a second reflectance (50% or lower) lower than a first reflectance is formed between an optical directional coupler and a first-layer wiring with the first reflectance. Thus, even when the first-layer wiring is formed above the optical directional coupler, the influence of the light reflected by the first-layer wiring on the optical signal propagating through the first optical waveguide and the second optical waveguide of the optical directional coupler can be reduced. Accordingly, the first-layer wiring can be arranged above the optical directional coupler, and the restriction on the layout of the first-layer wiring is relaxed.
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