NDLI: Study on path-optimization by grade for sorting dies

Content Provider	IEEE Xplore Digital Library
Author	Tao Wu Bin Li Longwen Wang Yu Huang
Copyright Year	2010
Description	Author affiliation: National Numerical Control System Engineering Research Center of Huazhong University of Science and Technology, Wuhan, 430074, China (Tao Wu; Bin Li; Longwen Wang; Yu Huang)
Abstract	Semiconductor light-emitting die (LED) has now become one of the most popular lighting devices. Before dies are put into process of package, they need be inspected and sorted strictly, so following waste will be saved. Cost of inspection and sort is relatively high, it is urgently needed to improve sort efficiency and reduce sort time. To get efficient solution, detailed view of working flow is presented to make analysis on performance and its influenced factors. It can be revealed that positioning of recycle bins is the major influence factor. Performance may decrease by 3.2 to 0.9 dies per second. Because of this, a path optimization method according grade priority is put forward. In this way, the dies with same grade should get priority to be sorted first. Techniques about die search and merge by grade, traversal of forward and backtrack with cross priority are described in detail. With results of reasonable simulations and a case experiment, this optimization is proved highly effective to reduce sort time and improve dies production rate.
Starting Page	876
Ending Page	880
File Size	250799
Page Count	5
File Format	PDF
ISBN	9781424451401
ISSN	2152744X
DOI	10.1109/ICMA.2010.5589000
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-04
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Recycling Sorting Light emitting diodes Production Optimization Lenses Machine vision auto-path planning light emitting dies die sorter performance evaluation merge by grade
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Study on auto-path planning according to grade priority for sorting dies

Study on automatic angle correction directed by machine vision in power LED dies sorting

Automatic measurement and grading of LED dies on wafer by machine vision

Automatic detectand match of LED dies basing on position relations betweenadjacent dies

Light optimal design for machine vision based on reflection

Developing a fast inspection path generation method for an automatic spinneret inspection system

Study on pre-correction method for LED chip declination in sorting system

Analysis on mechanisms and performance of on-line angle correction in LED die sorting

Design optimization of light emitting diode module «chip-on-board» for light extraction increase

Study on path-optimization by grade for sorting dies

Similar Documents

Study on auto-path planning according to grade priority for sorting dies

Study on automatic angle correction directed by machine vision in power LED dies sorting

Automatic measurement and grading of LED dies on wafer by machine vision

Automatic detectand match of LED dies basing on position relations betweenadjacent dies

Light optimal design for machine vision based on reflection

Developing a fast inspection path generation method for an automatic spinneret inspection system

Study on pre-correction method for LED chip declination in sorting system

Analysis on mechanisms and performance of on-line angle correction in LED die sorting

Design optimization of light emitting diode module «chip-on-board» for light extraction increase

Study on path-optimization by grade for sorting dies