MEMS probe fabrication on a reusable substrate for probe card application
First Claim
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1. A method comprising:
- forming a probe on a substrate using Micro-Electro-Mechanical Systems (MEMS) processing techniques, the probe having a bonding surface to be attached to an application platform of a probe card, the bonding surface formed on a plane perpendicular to a surface of the substrate;
forming an undercut beneath the probe for detachment of the probe from the substrate;
detaching the probe from the substrate by breaking a joint located between a base portion of probe and an anchoring structure on the substrate, wherein detaching the probe from the substrate further comprises;
forming a sacrificial layer on the substrate;
forming the probe and the anchoring structure on the sacrificial layer; and
removing the sacrificial layer beneath the probe without completely removing the sacrificial layer beneath the anchoring structure.
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Abstract
A Micro-Electro-Mechanical-Systems (MEMS) probe is fabricated on a substrate for use in a probe card. The probe has a bonding surface to be attached to an application platform of the probe card. The bonding surface is formed on a plane perpendicular to a surface of the substrate. An undercut is formed beneath the probe for detachment of the probe from the substrate.
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Citations
20 Claims
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1. A method comprising:
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forming a probe on a substrate using Micro-Electro-Mechanical Systems (MEMS) processing techniques, the probe having a bonding surface to be attached to an application platform of a probe card, the bonding surface formed on a plane perpendicular to a surface of the substrate; forming an undercut beneath the probe for detachment of the probe from the substrate; detaching the probe from the substrate by breaking a joint located between a base portion of probe and an anchoring structure on the substrate, wherein detaching the probe from the substrate further comprises; forming a sacrificial layer on the substrate; forming the probe and the anchoring structure on the sacrificial layer; and removing the sacrificial layer beneath the probe without completely removing the sacrificial layer beneath the anchoring structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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forming a probe on a substrate using Micro-Electro-Mechanical Systems (MEMS) processing techniques, the probe having a bonding surface to be attached to an application platform of a probe card, the bonding surface formed on a plane perpendicular to a surface of the substrate; forming an undercut beneath the probe for detachment of the probe from the substrate; detaching the probe from the substrate by breaking a joint located between a base portion of probe and an anchoring structure on the substrate, wherein detaching the probe from the substrate further comprises; forming a conductive layer on the substrate; forming a sacrificial layer on the conductive layer, the sacrificial layer having an opening to expose the conductive layer; forming the probe and the anchoring structure on the sacrificial layer, the anchoring structure having contact to the conductive layer through the opening; and removing the sacrificial layer beneath the probe. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification