Nidek Co., Ltd.

Other

Matsushita Electric Industrial Co., Ltd.

Jun Katsuragawa

Akira Nakanishi

Toshiharu Fukui

Hiroshi Moroi

With objectives of providing a transparent board with conductive multi-layer antireflection, under condition of high transmissivity not only on a glass substrate but also on a non-glass transparent substrate with property of conductivity and demanded resistance at most exterior surface, laminating at least three layer thin films on a transparent substrate provides with an effect of high transmissivity by suppressing reflection from interference of optical waves, in which the transparent first dielectric layer thin film on the substrate that has a higher refractive index than the substrate has, the transparent second dielectric layer thin film next to the first-layer film that has a lower refractive index than the substrate has, and the most exterior transparent third conductive-layer thin film.

Transparent board with conductive multi-layer antireflection films, transparent touch panel using this transparent board with multi-layer antireflection films, and electronic equipment with this transparent touch panel

With objectives of providing with a transparent board with conductive multi-layer antireflection thin films, under condition of high transmissivity not only on a glass substrate but also on a non-glass transparent substrate with property of demanded electrical resistance at the most exterior surface, this invention laminates at least three layers of thin films on a transparent substrate, in which the transparent dielectric 1 -layer thin film on the substrate that has a higher refractive index than the substrate has, the transparent dielectric 2 -layer thin film next to the 1st layer that has a lower refractive index than the substrate has, and the most exterior transparent conductive transparent thin film that includes weight percentage no less than 20% of SnO .

TRANSPARENT SUBSTRATE WITH CONDUCTIVE MULTILAYER ANTI REFLECTION FILM, TRANSPARENT TOUCH PANEL USING THE TRANSPARENT SUBSTRATE WITH MULTILAYER ANTI REFLECTION FILM AND ELECTRONIC APPARATUS USING THE TOUCH PANEL

A transparent substrate with a multilayer antireflection film having electrical conductivity is disclosed. On a polycarbonate substrate (a refractive index of 1.58) with a hard coat, a first thin-film layer whose main component is SiO is formed with a thickness of 142.5 nm (approx. &lgr;/4 for a wavelength of 550 nm). A second thin-film layer whose main component is TiO is formed with a thickness of 124.0 nm on the first thin-film layer. Furthermore, a third thin-film layer whose main component is indium tin oxide (ITO) is formed with a thickness of 150.0 nm on the second thin-film layer.

Growing community of inventors

Okazaki, Japan

Jun Katsuragawa