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IEEE Global History Network > Special Pages > Browse/Milestone-2DProposal:Sharp-2014-2Dinch-20thin-2Dfilm-2Dtransistor-20liquid-2Dcrystal-20display-20(TFT-2DLCD)-20for-20TV,-20which-20has-20ushered-20in-20TFT-20LCD-20industry
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| Milestone Buildings Exist
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Yes
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| Milestone Distinguishing Features
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At the very beginning of a-Si-TFT-LCD busi … At the very beginning of a-Si-TFT-LCD business startup, this work clearly showed a-Si-TFT-LCD have the potential to replace monster CRT in the coming information age by its superior characteristics: flatness, light-weight, small power consumption, high saturation full-color rendition, high readability in high ambient light, realized on the 14-in. display size, the most dominant size in the contemporary market by using the technology which was developed to mass-produce twenty 3-in. TFT-LCD TV panels laid out on the mother glass of 300mm x 320mm dimensions.
The high display quality was brought about by the fierce battle and cooperation between TFT-LCD research group and TV business group.
TV business group knew the market and joined the development project from the very beginning and gave a clear display quality target to TFT-LCD research group to achieve and make the TFT-LCD a viable display technology against CRT dominance.
TFT-LCD research group accepted the challenge and made it. group accepted the challenge and made it.
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| Milestone Obstacles Overcome
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Technology wise:
At the time when a mere s … Technology wise:
At the time when a mere small 3-in. a-Si-TFT-LCD production was just started with poor yield, unstable and far-from-being-matured production equipment, small output capacity drivers, engineers had to prepare line-defect free TFT-LCD panels with high display quality, meaning large contrast ratio, high color saturation with high uniformity, and they made a precise electrical and physical system analysis and designing and devised redundant pixel and bus line schemes, and employed normally-white LCD operation mode, which was first employed in 3-in. TFT-LCD panel, and developed the TFT-LCD panel and its driving scheme to achieve higher contrast ratio, better gray scale and full-color rendition, wider tolerance in temperature and cell-gap variations, leading higher display uniformity across the entire large display area, than normally-black mode could achieve.
Organization management wise:
Sharp's first application of TFT-LCD was television which is supposed to be exposed to "critical" consumers 3-5 hours everyday for more than 10 years.
So, from the very begging of development project, TV business group, who understand the market, located in Yaita-shi, Tochigi-ken, and TFT-LCD research group located in Tenri-shi, Nara-ken, worked closely; even though, two places are about 600km apart.
TV group, headed by Magohiro ARAMOTO, joined by Shuhji KOHZAI later on, showed the clear target specifications and evaluation methods to TFT-LCD research group; TFT-LCD research group, headed by Masataka MATUURA, achieved and acquired them.
In the production project, LCD business group, headed by Mitsuo ISHII, located in Yamato-Kohriyama-shi, Nara-ken, joined the project, bringing in panel production technology including large mother glass handing know-hows and the world-first TFT-LCD factory was build in the precinct of Research and Development group, near the TFT-LCD research group.
The 14-in. TFT-LCD panels were prepared by using the production line.
There were lot of fierce arguments and misunderstandings among three groups, but those were suppressed and solved by tightly sharing the common mission: Make TV displays for OUR TVs! mon mission: Make TV displays for OUR TVs!
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| Milestone Plaque Mounting Details
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The milestone plaque is to be kept in Shar … The milestone plaque is to be kept in Sharp Technology Innovation Museum, and shown to the public along with other milestones of Sharp business activities of a 100 year history.
Sharp Technology Innovation Museum is located in the premise of Sharp Technology Center where LCD research was started and culminated in mass-producing the woｒld-first mini-calculator mounted with LCD and C-MOS logic : the calculator is displayed at the British Science Museum. s displayed at the British Science Museum.
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| Milestone Present Site Owner
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Sharp Technology Innovation Museum,
R&D Group,
Sharp Corporation
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| Milestone References
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[113] “Sharp has developed a 14 TFT color … [113] “Sharp has developed a 14 TFT color LCD unit,” Sharp Corp. News Release, June 24, 1988.
[114] T. Nagayasu, T. Oketani, T. Hirobe, H. Kato, S. Mizushima, H. Take, K. Yano, M. Hijikigawa, and I. Washizuka, “A 14-in-diagonal full color a-Si TFT LCD,” in Proc. Int. Display Research Conf., San Diego, CA, Oct. 1988, pp. 56–58.
[9] G. H. Heilmeier, “Liquid crystal displays: An experiment in interdisciplinary research that worked,” IEEE Trans. Electron Devices, vol. ED-23, July 1976.
[17] “George Heilmeier. The liquid crystal display,” Wall Street J., May
24, 1993.
[1] H. Kawamoto, “The History of Liquid-Crystal Display and its Industry,” Proceedings of 2012 IEEE HISTELCON, Pavia, Italy, September 2012 EE HISTELCON, Pavia, Italy, September 2012
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| Milestone Site Access Details
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Public visitors have to go through security, have to wear ID cards in the museum.
Appointment has to be made to visit the site.
The appointment contact: +81-743-65-0011
http://www.sharp.co.jp/corporate/showroom/tenri/index.html
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| Milestone Site Description
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Sharp Technology Innovation Museum,
R&D Group,
Sharp Corporation
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| Milestone Site Owner Approval
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Yes +
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| Milestone proposal submitted
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true +
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| Proposed Milestone IEEE Section
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IEEE Kansai Section +
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| Proposed Milestone Location
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2613-1 Ichinomoto-cho, Tenri, Nara 632-8567 Japan
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| Proposed Milestone Name
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Sharp 14-inch thin-film-transistor liquid-crystal display (TFT-LCD) for TV, 1988 +
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| Proposed Milestone Plaque Citation
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Sharp demonstrated a 14-in. TFT-LCD for TV … Sharp demonstrated a 14-in. TFT-LCD for TV in 1988 when the display sizes of the mass-produced TFT-LCD and CRT TVs in the largest number were 3-in. and 14-in. respectively.
The breathtakingly high display quality in CRT-size convinced vacillating electronic companies to decide to join the burgeoning TFT-LCD industry, vaulting it to the major league status in emerging full-color portable PCs, and replaced CRTs in TVs about 2 decades later. eplaced CRTs in TVs about 2 decades later.
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| Proposed Milestone Year
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1987-1988 +
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| Modification dateThis property is a special property in this wiki.
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8 March 2013 18:49:15 +
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