Panasonic Corporation

Panasonic Electric Works Co., Ltd.

Norihiro Itou

Takeyuki Yamaki

Nobuhiro Ide

Kenji Kawano

Hiroshi Yokogawa

Koichi Takahama

Masaru Yokoyama

Akira Tsujimoto

Yasuhisa Kishigami

In a plane emission device comprising a transparent substrate, a light scattering layer formed on a surface of the transparent substrate, and a luminescent body of organic or inorganic material which is formed on a surface of the light scattering layer and emits light by light or electric energy, efficiency to takeout light to outside is improved. The light scattering layer contains binder and two kinds of fillers, and when a refraction index of the binder is assumed as Nb, a refraction index of one of the two kinds of fillers is assumed as Nf, and a refraction index of the other is assumed as Nf, a relationship that Nf&#x3e;Nb&#x3e;Nfis satisfied. Since the light scattering layer contains two kinds of fillers, disorder occurs in critical angle when light exits from the light scattering layer to the transparent substrate, incidence rate of light into the transparent substrate rises, and efficiency to takeout the light to outside increases.

Plane emission device

There is provided a composite thin film-holding substrate in which a composite thin film () comprising a filler () having a refractive index lower than that of a substrate () and a binder () having a refractive index higher than that of the filler () is formed on a surface of the substrate (). Light is efficiently scattered when passing through the composite thin film () which comprises the filler () and the binder () having different refractive indexes from each other. In addition, the refractive index of a composite thin film () comprising a filler () having a low refractive index is low. As a result, the discharge efficiency of light which passes through the composite thin film () from the substrate () to the external is improved.

Composite thin film holding substrate, transparent conductive film holding substrate, and panel light emitting body

Growing community of inventors

Suita, Japan

Norihiro Itou