Share Email Print

Proceedings Paper

Cost modeling of low-temperature large-area polysilicon thin film transistor liquid crystal display manufacturing
Author(s): Steven Jurichich; Samuel C. Wood; Krishna C. Saraswat
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The potential to integrate the scan and data driver circuitry and thereby reduce the cost of active-matrix liquid-crystal displays (AM-LCDs) has been one of the major reasons for pursuing a low-temperature poly-Si thin-film transistor (TFT) technology. Improvements in low-temperature large-area processing technologies have made poly-Si TFT technology compatible with conventional amorphous-Si substrates. We examine the cost of manufacturing poly-Si TFT LCDs for 10-in. SVGA resolution color displays. We present a detailed cost analysis of manufacturing a low-temperature poly-Si TFT LCD with integrated drivers including the operating costs of manufacturing. The cost per display for manufacturing plants running amorphous-Si and poly-Si TFT processes at their minimum efficient scale are compared. A cumulative Poisson yield model is presented which takes into account the additional area and process steps requirements for a poly-Si TFT process with integrated drivers. The overall poly-Si AM-LCD manufacturing cost is lower despite having a higher front-end TFT array manufacturing cost due to the additional complexity of fabricating CMOS drivers as well as the lower TFT yield. Our results indicate that low- temperature poly-Si AM-LCDs with integrated drivers will be cost competitive with a-Si AM-LCDs.

Paper Details

Date Published: 10 April 1997
PDF: 6 pages
Proc. SPIE 3014, Active Matrix Liquid Crystal Displays Technology and Applications, (10 April 1997); doi: 10.1117/12.270291
Show Author Affiliations
Steven Jurichich, Stanford Univ. (United States)
Samuel C. Wood, Stanford Univ. (United States)
Krishna C. Saraswat, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 3014:
Active Matrix Liquid Crystal Displays Technology and Applications
Tolis Voutsas; Tsu-Jae King, Editor(s)

© SPIE. Terms of Use
Back to Top