Functional element package and fabrication method therefor
First Claim
1. A functional element package comprising:
- a silicon substrate on which a functional element is formed, the functional element having one of a mobile portion and a sensor;
a seal member bonded with the silicon substrate to airtightly seal the functional element and form an airtightly sealed space therein, and including a step portion in its height direction;
a first wiring portion connected with the functional element and extending from the airtightly sealed space to an outside thereof;
a second wiring portion being different from the first wiring portion and extending from the step portion to an upper surface of the seal member; and
a bump on the second wiring portion on the upper surface of the seal member, whereinthe first wiring portion extending to the outside is bent towards the airtightly sealed space and connected via a conductive member with the second wiring portion on the step portion, and the conductive member is connected with the second wiring portion on a part of the step portion other than the upper surface of the seal member.
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Accused Products
Abstract
A functional element package includes a silicon substrate with a functional element having one of a mobile portion and a sensor thereon; a seal member being bonded with the silicon substrate to form an airtightly sealed space therein, and including a step portion in its height direction; a first wiring portion being connected with the functional element and extending from the airtightly sealed space to an outside thereof; a second wiring portion being different from the first wiring portion and extending from the step portion to an upper surface of the seal member; and a bump on the second wiring portion, in which the first wiring portion is bent towards the airtightly sealed space and connected via a photoconductive member with the second wiring portion on the step portion.
57 Citations
17 Claims
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1. A functional element package comprising:
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a silicon substrate on which a functional element is formed, the functional element having one of a mobile portion and a sensor; a seal member bonded with the silicon substrate to airtightly seal the functional element and form an airtightly sealed space therein, and including a step portion in its height direction; a first wiring portion connected with the functional element and extending from the airtightly sealed space to an outside thereof; a second wiring portion being different from the first wiring portion and extending from the step portion to an upper surface of the seal member; and a bump on the second wiring portion on the upper surface of the seal member, wherein the first wiring portion extending to the outside is bent towards the airtightly sealed space and connected via a conductive member with the second wiring portion on the step portion, and the conductive member is connected with the second wiring portion on a part of the step portion other than the upper surface of the seal member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17)
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14. A fabrication method for a functional element comprising:
- a silicon substrate on which a functional element is formed, the functional element having one of a mobile portion and a sensor;
a seal member bonded with the silicon substrate to airtightly seal the functional element and form an airtightly sealed space therein, and including a step portion in its height direction;
a first wiring portion connected with the functional element and extending from the airtightly sealed space to an outside thereof;
a second wiring portion being different from the first wiring portion and extending from the step portion to an upper surface of the seal member ; and
a bump on the second wiring portion on the upper surface of the seal member, wherein the first wiring portion extending in the outside is bent towards the airtightly sealed space and connected via a photoconductive member with the second wiring portion on the step portion, the method comprising the steps of;forming an inclined peripheral wall of the seal member from the upper surface to the step portion by anisotropic wet etching; and connecting the conductive member with the second wiring portion on a part of the step portion other than the upper surface of the seal member. - View Dependent Claims (15)
- a silicon substrate on which a functional element is formed, the functional element having one of a mobile portion and a sensor;
Specification