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[Company Information]Nitto Denko Wins Prestigious Award for LCD Film Invention
7.1.2005
Japan’s leading liquid crystal display (LCD)-related products manufacturer Nitto Denko Corporation has been awarded the Prime Minister Prize for its invention of the method of manufacturing wide-view-angle birefringent film for LCDs, the company announced today.
The prestigious award was presented to Nitto Denko on the occasion of National Commendation for Invention 2005 hosted by Japan Institute of Invention and Innovation (JIII) on July 1, 2005. The award is given to inventions which are recognized to show superior scientific and technical inventive step as well as significant operational effect, and which have contributed to scientific and technical progress as well as industrial development.
At the ceremony held at Prince Hotel in Tokyo, the Prime Minister Prize was presented to four inventors of the technology at Nitto Denko: Mr. Hiroyuki Yoshimi, Mr. Tatsuki Nagatsuka, Mr. Yasuo Fujimura and Mr. Tatsuya Osuka.
Name of Award
The Prime Minister Prize
Name of Invention
An Invention on the Method of Manufacturing Wide-View-Angle Birefringent Film for LCD (Japanese Patent No. 2818983,US Patent No. 5245456, Korean Patent No. 313049, Belgian, French and UK Patent No. 0482620, German Patent No. 69124911.3)
Outline of the Invention
The basic structure of a typical LCD device is such that a polarizing film and an optical compensation film (birefringent film) are located on the backlight side as well as the viewing side of the liquid crystal cells. In order to obtain vivid image characteristics of display, it is necessary to have a better contrast between black and white and to raise color reproducibility. Conventional LCDs, however, were marked by a phenomenon such that a whitish display image appears when the screen is viewed from an oblique angle. In addition, when the display in black color is viewed obliquely, the image is seen to be colored blue or yellow, so that the viewing angle becomes necessarily narrow. In order to resolve such a shortcoming and to raise the display quality in terms of contrast and vividness of the colors, it became important to introduce optical compensation. Such an optical compensation is now successfully secured in LCDs by using the birefringent film which is the subject of the award-winning invention this time. The characteristic of the invention is such that the refractive index of the film is controlled three-dimensionally with high precision, leading to the elimination of such shortcoming in the conventional LCDs.
Nitto Denko’s wide-view-angle birefringent film has now become an indispensable LCD material, finding use in a broad range of applications such as personal computer monitors, cellular phones and TVs. The demand for this film is expected to continue expanding in step with a further development expected for the global LCD market from now on.
Enhanced Display Quality with Wide-view-angle Birefringent Film
About Nitto Denko
Nitto Denko, situated in Ibaraki, Osaka Pref., is a specialties manufacturer well known for its electronics, industrial and functional products including LCD-related products, for which the company has a leading share in the world market. Nitto Denko achieved sales of roughly $4.9 billion and operating income of $670 million in Fiscal 2004 ending March 31, 2005.
About JIII
Japan Institute of Invention and Innovation (JIII) is a non-profit organization designed to encourage invention, enhance original ideas, promote their practical use, and propagate and develop the industrial property system, thus advancing science and technology and contributing to the development of the Japanese economy. It has an Observer status in WIPO, or World Intellectual Property Organization. The website of JIII is http://www.jiii.or.jp/
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