Title:
面発光体
Document Type and Number:
Japanese Patent JP5536977
Kind Code:
B2
Abstract:
In a plane emission device comprising a transparent substrate (1), a light scattering layer (2) formed on a surface of the transparent substrate (1), and a luminescent body (3) of organic or inorganic 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 (2) contains binder (4) and two kinds of fillers (5, 6), and when a refraction index of the binder (4) is assumed as Nb, a refraction index of one of the two kinds of fillers (5, 6) is assumed as Nf 1 , and a refraction index of the other is assumed as Nf 2 , a relationship that Nf 2 >Nb> Nf 1 is satisfied. Since the light scattering layer (2) contains two kinds of fillers (5, 6), disorder occurs in critical angle when light exits from the light scattering layer (2) to the transparent substrate (1) incidence rate of light into the transparent substrate (1) rises, and efficiency to takeout the light to outside increases.
Inventors:
Yoshihiro Ito
Takeyuki Yamaki
Takeyuki Yamaki
Application Number:
JP2007095188A
Publication Date:
July 02, 2014
Filing Date:
March 30, 2007
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H05B33/02; H01L51/50; H05B33/14
Domestic Patent References:
| JP2005190931A | ||||
| JP2003216061A |
Attorney, Agent or Firm:
Keisei Nishikawa