液晶テレビは画面の電極にＩＴＯというインジウムとスズの酸化物を使う。インジウムは中国が主に産出し、将来の安定調達に不安が残る。酸化亜鉛の電極で代替する研究もあるが、湿度に弱い欠点があった。
新技術は２種類の添加元素を使って酸化亜鉛の薄膜に水をはじく機能を持たせた。試作した電極をセ氏60度、湿度95％で連続500時間動作させたところ、実用水準であることを確認した。光の透過率はＩＴＯ電極より高く、省エネで製品寿命が長くなるとみている。
液晶テレビは各社がインジウムの代替を模索する一方で、薄くて軽い製品にするためにガラス基板からプラスチックフィルム基板への切り替えも目指している。新開発の酸化亜鉛電極はフィルム基板がわずかに含む水にも強い。
これまでにインジウムを半分以上減らすことに成功しており、韓国や台湾、中国などの企業や研究機関が注目していた。
山本教授は「インジウムを含む電極の代替が可能になった。タッチパネルやゲーム機器、カメラなど液晶表示装置を使っている様々な製品に活用できる」と話している。
ぜひ、実用化に向けて更なる研究を進めて、レアメタルに頼らない基礎技術を確立してほしいですね。
Prof. Yamamoto of Kochi University of Technology has developed a technology for LCD panels do not use the rare metal indium is (rare). Devised a new bright screen is used to replace the zinc oxide electrode, rather than using indium. Easy to make a thin and light screen, aim the basic technology of world standard.
LCD TVs use an oxide of indium and tin that the ITO electrode of the screen. Indium is produced mainly in China, remains concerned about the stability of future procurement. Some research in a substitute of zinc oxide electrode, there was a drawback to weak humidity.
The new technology was to have a water-shedding function of the zinc oxide thin film by using two types of additive elements. Was made to 500 continuous hours of operation of 60 degrees Celsius, with humidity of 95% was fabricated electrodes, it was confirmed that this is a practical level. Have seen the light transmittance is higher than the electrode ITO, and a longer life energy saving products.
On the other hand LCD TV companies to seek an alternative to indium, which also aims to switch to the plastic film substrate from the glass substrate in order to thin and light product. The newly developed zinc oxide electrode film substrate is resistant to water containing slightly.
Has been successful in reducing more than half of the indium in the past, companies and research institutes in South Korea and Taiwan, and China had been noted.
That said, "can be utilized in a variety of products you are using a liquid crystal display device and game equipment. Touch panel, such as alternative camera containing indium electrode has become possible to" Professor Yamamoto.
Means, and promoting further research for practical application, I want to establish a basic technology that does not rely on rare metals.
ぜひ、実用化に向けて更なる研究を進めて、レアメタルに頼らない基礎技術を確立してほしいですね。
Prof. Yamamoto of Kochi University of Technology has developed a technology for LCD panels do not use the rare metal indium is (rare). Devised a new bright screen is used to replace the zinc oxide electrode, rather than using indium. Easy to make a thin and light screen, aim the basic technology of world standard.
LCD TVs use an oxide of indium and tin that the ITO electrode of the screen. Indium is produced mainly in China, remains concerned about the stability of future procurement. Some research in a substitute of zinc oxide electrode, there was a drawback to weak humidity.
The new technology was to have a water-shedding function of the zinc oxide thin film by using two types of additive elements. Was made to 500 continuous hours of operation of 60 degrees Celsius, with humidity of 95% was fabricated electrodes, it was confirmed that this is a practical level. Have seen the light transmittance is higher than the electrode ITO, and a longer life energy saving products.
On the other hand LCD TV companies to seek an alternative to indium, which also aims to switch to the plastic film substrate from the glass substrate in order to thin and light product. The newly developed zinc oxide electrode film substrate is resistant to water containing slightly.
Has been successful in reducing more than half of the indium in the past, companies and research institutes in South Korea and Taiwan, and China had been noted.
That said, "can be utilized in a variety of products you are using a liquid crystal display device and game equipment. Touch panel, such as alternative camera containing indium electrode has become possible to" Professor Yamamoto.
Means, and promoting further research for practical application, I want to establish a basic technology that does not rely on rare metals.
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