ACTIVE PIXEL SENSOR HAVING TWO WAFERS
First Claim
1. A method for fabricating an active pixel sensor comprising a sensor wafer and a support circuit wafer, the method including:
- attaching the sensor wafer to a handle wafer using a removable interface layer;
backside thinning the sensor wafer to a given thickness;
attaching the support circuit wafer to the sensor wafer; and
separating the handle wafer from the sensor wafer.
1 Assignment
0 Petitions
Accused Products
Abstract
A vertically-integrated active pixel sensor includes a sensor wafer connected to a support circuit wafer. Inter-wafer connectors or connector wires transfer signals between the sensor wafer and the support circuit wafer. The active pixel sensor can be fabricated by attaching the sensor wafer to a handle wafer using a removable interface layer. Once the sensor wafer is attached to the handle wafer, the sensor wafer is backside thinned to a given thickness. The support circuit wafer is then attached to the sensor wafer and the handle wafer separated from the sensor wafer.
58 Citations
7 Claims
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1. A method for fabricating an active pixel sensor comprising a sensor wafer and a support circuit wafer, the method including:
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attaching the sensor wafer to a handle wafer using a removable interface layer; backside thinning the sensor wafer to a given thickness; attaching the support circuit wafer to the sensor wafer; and separating the handle wafer from the sensor wafer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification