OFFLINE VISION ASSIST METHOD AND APPARATUS FOR INTEGRATED CIRCUIT DEVICE VISION ALIGNMENT
First Claim
1. An offline vision assisted calibration system comprising:
- a bottom side socket assembly that is mountable in an integrated circuit device handler and comprises;
a socket plate that comprises a hole grid array; and
a top contactor assembly that is mountable in an integrated circuit device handler and comprises;
a guide plate,a plurality of fiducials located on a lower side surface of the guide plate,a contact holder plate comprising a top contactor contact array, anda plurality of adjustment actuators configured to move the contact holder plate with respect to the guide plate;
a calibration jig comprising an array of contacts on a bottom side thereof, wherein the calibration jig is configured to be placed in the socket plate such that the contacts engage with the hole grid array of the socket plate;
a bottom side socket assembly holder configured to hold the bottom side socket assembly; and
a top contactor assembly holder configured to hold the top contactor assembly.
3 Assignments
0 Petitions
Accused Products
Abstract
An offline vision assisted calibration system includes: a bottom side socket assembly that is mountable in an integrated circuit device handler and comprises: a socket plate that comprises a hole grid array; and a top contactor assembly that is mountable in an integrated circuit device handler and comprises: a guide plate, a plurality of fiducials located on a lower side surface of the guide plate, a contact holder plate comprising a top contactor contact array, and a plurality of adjustment actuators configured to move the contact holder plate with respect to the guide plate; and a calibration jig comprising an array of contacts on a bottom side thereof, wherein the calibration jig is configured to be placed in the socket plate such that the contacts engage with the hole grid array of the socket plate.
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Citations
16 Claims
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1. An offline vision assisted calibration system comprising:
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a bottom side socket assembly that is mountable in an integrated circuit device handler and comprises; a socket plate that comprises a hole grid array; and a top contactor assembly that is mountable in an integrated circuit device handler and comprises; a guide plate, a plurality of fiducials located on a lower side surface of the guide plate, a contact holder plate comprising a top contactor contact array, and a plurality of adjustment actuators configured to move the contact holder plate with respect to the guide plate; a calibration jig comprising an array of contacts on a bottom side thereof, wherein the calibration jig is configured to be placed in the socket plate such that the contacts engage with the hole grid array of the socket plate; a bottom side socket assembly holder configured to hold the bottom side socket assembly; and a top contactor assembly holder configured to hold the top contactor assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of performing offline vision assisted calibration, the method comprising:
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providing an offline vision assisted calibration system comprising; a bottom side socket assembly that is mountable in an integrated circuit device handler and comprises; a socket plate that comprises a hole grid array. a top contactor assembly that is mountable in an integrated circuit device handler and comprises; a guide plate, a plurality of fiducials located on the lower side surface of the guide plate, a contact holder plate comprising a top contactor contact array, and a plurality of adjustment actuators configured to move the contact holder plate with respect to the guide plate, a calibration jig comprising an array of contacts on a bottom side thereof, wherein the calibration jig is configured to be placed in the socket plate such that the contacts engage with the hole grid array of the socket plate, a bottom side socket assembly holder configured to hold the bottom side socket assembly, a top contactor assembly holder configured to hold the top contactor assembly, and an upward-facing camera, wherein one of the bottom side socket assembly or the top contactor assembly comprises a plurality of alignment pins, and the other of the bottom side socket assembly or the top contactor assembly comprises a plurality of bushings configured to engage with the alignment pins of the bottom side socket assembly; while the calibration jig is in the socket plate, causing the top contactor assembly holder to move the top contactor assembly to a position at which the alignment pins are engaged with the bushings; while the alignment pins are engaged with the bushings, causing the top contactor assembly holder to pick up the calibration jig from the bottom side socket assembly and move the calibration jig to a location above the upward-facing camera; receiving, from the upward-facing camera, an image of a bottom side of the top contactor assembly and calibration jig; and determining, based on the received image;
a first offset between the array of contacts of the calibration jig and the fiducials of the top contactor assembly, the first offset being representative of an offset between the hole grid array of the bottom side socket assembly and the fiducials of the top contactor assembly. - View Dependent Claims (14, 15)
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16. A system for performing offline vision alignment between a socket and a contactor, the system comprising:
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a bottom side socket assembly holder configured to hold a bottom side sock assembly having a hole grid array; a calibration jig comprising an array of jig contacts at its bottom surface, the jig contacts being configured to engage with holes of the hole grid array; a top contactor assembly holder configured to hold a top contactor assembly having an array of contactor contacts and a plurality of fiducials, and configured to cause the top contactor assembly to pick up the calibration jig from the bottom side socket assembly; an upward-looking camera; and a controller configured to; receive data from the upward-looking camera, determine a locational offset between the hole grid array and the contactor fiducials based on an image taken by the upward-looking camera of the top contactor assembly holding the calibration jig, determine a locational offset between the contactor contacts and the contactor fiducials based on an image taken by the upward-looking camera of the top contactor assembly without the calibration jig, and determine a locational offset between the contactor contacts and the socket hole grid array based on a difference between (i) the determined locational offset between the hole grid array and the contactor fiducials and (ii) the determined locational offset between the contactor contacts and the contactor fiducials.
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Specification