Measuring element for a flow sensor
First Claim
Patent Images
1. A measuring element for a flow sensor, the measuring element attaching to a bonding wire, comprising:
- a membrane;
a platinum layer;
at least one heater arranged on the membrane;
at least one temperature sensor arranged on the membrane, the temperature sensor being patterned out of the platinum layer;
at least one printed circuit trace for contacting the heater and the temperature sensor, the printed circuit trace being patterned out of the platinum layer; and
an interconnection region for attaching to the bonding wire, the interconnection region including a metal layer composed of a metal other than platinum.
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Abstract
In a measuring element for a flow sensor and a method for manufacturing the measuring element, a heater, a temperature sensor, and a printed circuit trace are patterned out of a platinum layer. Furthermore, an interconnection region is used for contacting the measuring chip with bonding wires. An additional metal layer is provided for the interconnection region.
23 Citations
7 Claims
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1. A measuring element for a flow sensor, the measuring element attaching to a bonding wire, comprising:
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a membrane; a platinum layer; at least one heater arranged on the membrane; at least one temperature sensor arranged on the membrane, the temperature sensor being patterned out of the platinum layer; at least one printed circuit trace for contacting the heater and the temperature sensor, the printed circuit trace being patterned out of the platinum layer; and an interconnection region for attaching to the bonding wire, the interconnection region including a metal layer composed of a metal other than platinum. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification