Integrated circuit using photonic bandgap structure

    公开(公告)号:US10788367B2

    公开(公告)日:2020-09-29

    申请号:US16715531

    申请日:2019-12-16

    Abstract: On an integrated circuit (IC) die, sensors are configured to receive electromagnetic energy and to generate signals in response to the electromagnetic energy. An encapsulation material encapsulates the IC die and the sensors. A filter structure includes a diffusion of particles within the encapsulation material. The filter structure includes: a first region configured to pass a first band of the electromagnetic energy to the sensors or to block the first band of the electromagnetic energy from passing to the sensors; and a second region configured to pass a second band of the electromagnetic energy to the sensors or to block the second band of the electromagnetic energy from passing to the sensors. The encapsulation material has a first intrinsic property, and the particles have a second intrinsic property that is different from the first intrinsic property.

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