Tutorial on applying the VM technology for TFT-LCD manufacturing

Fan-Tien Cheng, Chi An Kao, Chun Fang Chen, Wen Huang Tsai

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

In the high-tech industries, on-line quality monitoring on each workpiece under processing is required to ensure process stability and improve yield rate. However, conducting workpiece-by-workpiece actual metrology is very expensive and time-consuming. In this case, a novel idea is to use "virtual metrology" (VM) that conjectures workpiece quality based on process data collected from production equipment with a slight supplement of actual metrology data. The purpose of this tutorial paper is to select the thin film transistor-liquid crystal display (TFT-LCD) manufacturing processes as the illustrative examples for demonstrating the methodology of fab-wide implementation of the VM technology systematically. To begin with, a survey of VM-related literature is performed. Then, the features of an effective and refined VM system are presented with the automatic VM (AVM) system developed by the authors as a case study, followed by introduction of the TFT-LCD production tools and manufacturing processes. After that, the generic deployment schemes of the VM technology for the TFT-LCD tools are proposed. Finally, illustrative examples with the AVM system as a case study are presented to show how the VM technology applies to TFT-LCD manufacturing.

Original languageEnglish
Article number6983605
Pages (from-to)55-69
Number of pages15
JournalIEEE Transactions on Semiconductor Manufacturing
Volume28
Issue number1
DOIs
Publication statusPublished - 2015 Feb 1

Fingerprint

Thin film transistors
Liquid crystal displays
metrology
transistors
manufacturing
liquid crystals
thin films
supplements
industries
methodology
conduction
Monitoring
Processing

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Cheng, Fan-Tien ; Kao, Chi An ; Chen, Chun Fang ; Tsai, Wen Huang. / Tutorial on applying the VM technology for TFT-LCD manufacturing. In: IEEE Transactions on Semiconductor Manufacturing. 2015 ; Vol. 28, No. 1. pp. 55-69.
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Tutorial on applying the VM technology for TFT-LCD manufacturing. / Cheng, Fan-Tien; Kao, Chi An; Chen, Chun Fang; Tsai, Wen Huang.

In: IEEE Transactions on Semiconductor Manufacturing, Vol. 28, No. 1, 6983605, 01.02.2015, p. 55-69.

Research output: Contribution to journalArticle

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