Semiconductor device with micro electromechanical system die
First Claim
Patent Images
1. A semiconductor device, comprising:
- a die pad including a die pad aperture, the die pad having opposed first and second die pad major surfaces;
a plurality of leads disposed in spaced relation to the die pad;
a semiconductor die attached to the first die pad major surface and electrically connected to at least one of the leads;
a MEMS die attached to the first die pad major surface and electrically connected to at least the semiconductor die, the MEMS die including a diaphragm;
a body at least partially encapsulating the die pad and the leads such that at least portions of the leads are exposed therein, the body including a body aperture, the die pad and body apertures collectively defining a port hole exposing the diaphragm, the body partially undercut to expose portions of the second die pad major surface adjacent opposed sides of the body aperture; and
a lid attached to the body and at least one of the leads in a manner covering the semiconductor die and the MEMS die.
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Abstract
In one embodiment, a miniaturized, multi-function, highly integrated and high performance semiconductor device or package includes a microphone implemented using a MEMS (Micro Electro Mechanical System) die. The semiconductor device includes a leadframe and a body collectively defining a port hole. The port hole facilitates the exposure of a diaphragm of the MEMS die in the semiconductor device.
39 Citations
20 Claims
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1. A semiconductor device, comprising:
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a die pad including a die pad aperture, the die pad having opposed first and second die pad major surfaces; a plurality of leads disposed in spaced relation to the die pad; a semiconductor die attached to the first die pad major surface and electrically connected to at least one of the leads; a MEMS die attached to the first die pad major surface and electrically connected to at least the semiconductor die, the MEMS die including a diaphragm; a body at least partially encapsulating the die pad and the leads such that at least portions of the leads are exposed therein, the body including a body aperture, the die pad and body apertures collectively defining a port hole exposing the diaphragm, the body partially undercut to expose portions of the second die pad major surface adjacent opposed sides of the body aperture; and a lid attached to the body and at least one of the leads in a manner covering the semiconductor die and the MEMS die. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A semiconductor device, comprising:
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a leadframe having first and second leadframe major surfaces; a semiconductor die attached and electrically connected to the leadframe; a MEMS die attached to the leadframe and electrically connected to at least the semiconductor die, the MEMS die including a diaphragm; a body at least partially encapsulating the leadframe such that at least portions of the first leadframe major surface are exposed therein, the body and the leadframe collectively defining a port hole which exposes a first surface of the diaphragm; and a lid attached to at least one of the leadframe and the body in a manner covering the semiconductor die and the MEMS die, the lid having an acoustic hole generally aligned with a second surface of the diaphragm. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A semiconductor device, comprising:
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a die pad having opposed first and second die pad major surfaces; a plurality of leads which are disposed in spaced relation to the die pad; a semiconductor die attached to the first die pad major surface and electrically connected to at least one of the leads; a MEMS die attached to the die pad and electrically connected to at least the semiconductor die, the MEMS die including a diaphragm; a body at least partially encapsulating the die pad and the leads such that at least portions of the leads are exposed therein, the body and the die pad collectively defining a port hole exposing a first surface of the diaphragm, the body undercut to expose portions of the second die pad major surface adjacent opposed sides of the port hole; and a lid attached to the body and at least one of the leads in a manner covering the semiconductor die and the MEMS die, the lid including an opening generally aligned with a second surface of the diaphragm.
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Specification