Effects of scribing wheel dimensions on LCD glass cutting

Nowadays, LCD is present everywhere in man-machine interfaces. It is used on various kind of instrument, such as Personal Digital Assistant (PDA), mobile phone, digital clock due to the superiority of display quality, relatively lower power consumption, small size, low weight, and also to its dim...

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Main Authors:	Amin, A. K. M. Nurul, Chong , Chee, -, Sayedatul Akma
Format:	Book Chapter
Language:	English
Published:	IIUM Press 2011
Subjects:	TS Manufactures
Online Access:	http://irep.iium.edu.my/23614/ http://irep.iium.edu.my/23614/ http://irep.iium.edu.my/23614/4/chp35.pdf

id	iium-23614
recordtype	eprints
spelling	iium-236142012-09-14T01:11:38Z http://irep.iium.edu.my/23614/ Effects of scribing wheel dimensions on LCD glass cutting Amin, A. K. M. Nurul Chong , Chee -, Sayedatul Akma TS Manufactures Nowadays, LCD is present everywhere in man-machine interfaces. It is used on various kind of instrument, such as Personal Digital Assistant (PDA), mobile phone, digital clock due to the superiority of display quality, relatively lower power consumption, small size, low weight, and also to its dimensional flexibility from less than one inch to as large as forty inch diagonal in flat television screen currently, Funaki [1]. Glass cutting is one of the important processes in LCD manufacturing. It has significant impact on the manufacturing yield. In the actual glass cutting process in LCD manufacturing plant, faulty cutting, which is commonly called “misbreaking”, always happens. It is a serious problem that reduces LCD production yield. In 1947, Taylor [2] studied the crack mechanism of glass by point indentation through the making of first Vickers hardness measurement. He observed some cracks at corners of diagonals impression. Holland and Turner [3] investigated strength degradation by scratching with worn and new diamond chips. They found that scratching creates two types of cracks, median and lateral. However, they did not correlate these cracks to material strength. John and Blair [4] conducted similar experiments to investigate the influence of interval time between scratching and breaking on strength. They found that the required breaking load was increased when the interval time was long Muir [5] explained that there are 28 parameters in the scribing process that need to be considered in meeting the quality requirement of glass cutting. Laser splitting of glass has been demonstrated to be effective and economical. Swain [6] discovered that laser splitting of glass necessitates the development of a sub-microscopic crack within the body of the glass by controlling the generation of stress. Veldkamp et al [7] observed cracking during the scratching of several brittle materials including glass. They reported the creation of several types of cracks such as median crack, lateral crack and surface cracks as a function of scratching load or speed. This present work focus on the study of the crack creation and propagation mechanism when apply scribe/break method on ITO coated soda lime glass using Tungsten Carbide scribing wheel. Focus is put at improvement of LCD glass cutting quality and its economic value. IIUM Press Amin, A. K. M. Nurul Adesta, Erry Yulian Triblas Ali, Mohammad Yeakub 2011 Book Chapter PeerReviewed application/pdf en http://irep.iium.edu.my/23614/4/chp35.pdf Amin, A. K. M. Nurul and Chong , Chee and -, Sayedatul Akma (2011) Effects of scribing wheel dimensions on LCD glass cutting. In: Advanced Machining Towards Improved Machinability of Difficult-to-Cut Materials. IIUM Press, Kuala Lumpur, Malaysia, pp. 259-265. ISBN 9789674181758 http://rms.research.iium.edu.my/bookstore/default.aspx
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TS Manufactures
spellingShingle	TS Manufactures Amin, A. K. M. Nurul Chong , Chee -, Sayedatul Akma Effects of scribing wheel dimensions on LCD glass cutting
description	Nowadays, LCD is present everywhere in man-machine interfaces. It is used on various kind of instrument, such as Personal Digital Assistant (PDA), mobile phone, digital clock due to the superiority of display quality, relatively lower power consumption, small size, low weight, and also to its dimensional flexibility from less than one inch to as large as forty inch diagonal in flat television screen currently, Funaki [1]. Glass cutting is one of the important processes in LCD manufacturing. It has significant impact on the manufacturing yield. In the actual glass cutting process in LCD manufacturing plant, faulty cutting, which is commonly called “misbreaking”, always happens. It is a serious problem that reduces LCD production yield. In 1947, Taylor [2] studied the crack mechanism of glass by point indentation through the making of first Vickers hardness measurement. He observed some cracks at corners of diagonals impression. Holland and Turner [3] investigated strength degradation by scratching with worn and new diamond chips. They found that scratching creates two types of cracks, median and lateral. However, they did not correlate these cracks to material strength. John and Blair [4] conducted similar experiments to investigate the influence of interval time between scratching and breaking on strength. They found that the required breaking load was increased when the interval time was long Muir [5] explained that there are 28 parameters in the scribing process that need to be considered in meeting the quality requirement of glass cutting. Laser splitting of glass has been demonstrated to be effective and economical. Swain [6] discovered that laser splitting of glass necessitates the development of a sub-microscopic crack within the body of the glass by controlling the generation of stress. Veldkamp et al [7] observed cracking during the scratching of several brittle materials including glass. They reported the creation of several types of cracks such as median crack, lateral crack and surface cracks as a function of scratching load or speed. This present work focus on the study of the crack creation and propagation mechanism when apply scribe/break method on ITO coated soda lime glass using Tungsten Carbide scribing wheel. Focus is put at improvement of LCD glass cutting quality and its economic value.
author2	Amin, A. K. M. Nurul
author_facet	Amin, A. K. M. Nurul Amin, A. K. M. Nurul Chong , Chee -, Sayedatul Akma
format	Book Chapter
author	Amin, A. K. M. Nurul Chong , Chee -, Sayedatul Akma
author_sort	Amin, A. K. M. Nurul
title	Effects of scribing wheel dimensions on LCD glass cutting
title_short	Effects of scribing wheel dimensions on LCD glass cutting
title_full	Effects of scribing wheel dimensions on LCD glass cutting
title_fullStr	Effects of scribing wheel dimensions on LCD glass cutting
title_full_unstemmed	Effects of scribing wheel dimensions on LCD glass cutting
title_sort	effects of scribing wheel dimensions on lcd glass cutting
publisher	IIUM Press
publishDate	2011
url	http://irep.iium.edu.my/23614/ http://irep.iium.edu.my/23614/ http://irep.iium.edu.my/23614/4/chp35.pdf
first_indexed	2023-09-18T20:35:41Z
last_indexed	2023-09-18T20:35:41Z
_version_	1777409030199705600

Effects of scribing wheel dimensions on LCD glass cutting

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