Galvanic Signal Path Isolation in an Encapsulated Package Using a Photonic Structure
First Claim
Patent Images
1. An encapsulated package comprising:
- a first integrated circuit (IC) die having an electromagnetic transmitter circuit to emit an electromagnetic signal having a frequency;
a second IC die having an electromagnetic receiver circuit to receive the electromagnetic signal having the frequency;
an encapsulation material encapsulating the first IC die together with the second IC die, the first IC die being spaced apart from the second IC die by a distance, and the encapsulation material including a photonic waveguide formed by a photonic structure to couple an output of the electromagnetic transmitter circuit to an input of the electromagnetic receiver circuit; and
a leadframe having a first die attach pad separated from a second die attach pad;
a portion of the photonic structure being located between the first IC die and the first die attach pad.
1 Assignment
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Accused Products
Abstract
An encapsulated package is provided that includes a pair integrated circuit (IC) die. A radio frequency (RF) circuit on one of the IC die is operable to transmit an RF signal having a selected frequency. An RF circuit on the other IC die is operable to receive the RF signal Encapsulation material encapsulates the IC die. A photonic waveguide couples between the RF transmitter and RF receiver to form galvanic path isolation between the two IC die. The photonic waveguide is formed by a photonic structure within the encapsulation material.
3 Citations
20 Claims
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1. An encapsulated package comprising:
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a first integrated circuit (IC) die having an electromagnetic transmitter circuit to emit an electromagnetic signal having a frequency; a second IC die having an electromagnetic receiver circuit to receive the electromagnetic signal having the frequency; an encapsulation material encapsulating the first IC die together with the second IC die, the first IC die being spaced apart from the second IC die by a distance, and the encapsulation material including a photonic waveguide formed by a photonic structure to couple an output of the electromagnetic transmitter circuit to an input of the electromagnetic receiver circuit; and a leadframe having a first die attach pad separated from a second die attach pad; a portion of the photonic structure being located between the first IC die and the first die attach pad. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15)
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8. (canceled)
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16. A method of encapsulating an integrated circuit, the method comprising:
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attaching a first integrated circuit (IC) die having an electromagnetic transmitter to a first die attach pad of a leadframe; attaching a second integrated circuit (IC) die having an electromagnetic receiver to a second die attach pad of the leadframe, in which the first die attach pad is separated from the second die attach pad, and the first IC die is spaced apart from the second IC die by a distance; forming a photonic structure within an encapsulation material, the encapsulation material encapsulating the first IC die together with the second IC die, and a portion of the photonic structure being located between the first IC die and the first die attach pad; and forming a photonic waveguide within the photonic structure to couple an output of the electromagnetic transmitter to an input of the electromagnetic receiver. - View Dependent Claims (17, 18, 19)
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20. (canceled)
Specification