Interface development for cost effective automated IC orientation checking systems

Nowshad Amin, Mohammad Shajib Khadem

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

IC packages, in semiconductor industries, are being marked through certain sequence by either laser marker or ink markers. A critical step in the final visual inspection is the orientation check of ICs that can be determined by detecting images of Pin-1 notch or Pin-1 dimple, which are molded/marked on the IC packages. This study accomplishes a software interface for a simple costeffective approach to develop an automated low cost vision system that is capable of detecting the IC orientation on a JEDEC tray for a Laser/Ink Marker System used in the IC industries. The algorithm has the competence and flexibility to distinguish correct orientation for various types of IC packages (QFP, PGA, BGA, Flip chip etc.). The workable prototype possesses input variables, control system and output variables along with software implementation using the pattern recognition template based on RGB (red-greenblue) color method for every pixel of the images. Images of Pin-1 dimple or Pin-1 Notch of the IC packages are considered to perform image matching with the software development. The accuracy level has been achieved to a threshold value of above 80% of the total pixels scanned between the matched images. With this threshold value, matching efficiency between two similar images has been attained near about 100%, based on the proposed algorithmic results. Illumination variation, vibration of the machine on conveyors and handlers, computer's timing gap with the web camera and low resolution (320x240 or 277x245 pixels) of the taken images have made the image matching a complicated one. However, all the constraints are taken into account for setting the threshold value and obtaining the matching accuracy and have been achieved the appropriate matching algorithm to implement the cost effective automated IC orientation checking system.

Original languageEnglish
Title of host publication2007 10th International Conference on Computer and Information Technology, ICCIT
DOIs
Publication statusPublished - 2007
Event2007 10th International Conference on Computer and Information Technology, ICCIT - Dhaka
Duration: 27 Dec 200729 Dec 2007

Other

Other2007 10th International Conference on Computer and Information Technology, ICCIT
CityDhaka
Period27/12/0729/12/07

Fingerprint

Crystal orientation
Image matching
Pixels
Ink
Costs
Conveyors
Lasers
Pattern recognition
Software engineering
Industry
Lighting
Inspection
Cameras
Semiconductor materials
Color
Control systems

Keywords

  • IC orientation
  • Machine vision
  • Pattern recognition
  • RGB color method
  • Web camera

ASJC Scopus subject areas

  • Computer Science Applications
  • Software

Cite this

Amin, N., & Khadem, M. S. (2007). Interface development for cost effective automated IC orientation checking systems. In 2007 10th International Conference on Computer and Information Technology, ICCIT [4579429] https://doi.org/10.1109/ICCITECHN.2007.4579429

Interface development for cost effective automated IC orientation checking systems. / Amin, Nowshad; Khadem, Mohammad Shajib.

2007 10th International Conference on Computer and Information Technology, ICCIT. 2007. 4579429.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Amin, N & Khadem, MS 2007, Interface development for cost effective automated IC orientation checking systems. in 2007 10th International Conference on Computer and Information Technology, ICCIT., 4579429, 2007 10th International Conference on Computer and Information Technology, ICCIT, Dhaka, 27/12/07. https://doi.org/10.1109/ICCITECHN.2007.4579429
Amin N, Khadem MS. Interface development for cost effective automated IC orientation checking systems. In 2007 10th International Conference on Computer and Information Technology, ICCIT. 2007. 4579429 https://doi.org/10.1109/ICCITECHN.2007.4579429
Amin, Nowshad ; Khadem, Mohammad Shajib. / Interface development for cost effective automated IC orientation checking systems. 2007 10th International Conference on Computer and Information Technology, ICCIT. 2007.
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