Title:
DISPERSION FOR PREVENTING ELECTRIFICATION AND ANTISTATIC FILM, AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2002/022757
Kind Code:
A1
Abstract:
A dispersion for preventing electrification, characterized in that it contains, as a primary component, high-resistance particles having a resistivity of 10?6¿ to 10?9¿ $g(V).cm. The application of the dispersion by a simple and easy method such as spray coating or brushing followed by firing can provide an antistatic film having stable antistatic properties, since the resultant antistatic film exhibits a reduced dependency of electric resistance on the sickness of a film and on environmental conditions. Such high-resistance particles include antimony pentoxide (Sb¿2?O¿5?) particles having a pyrochlore crystal structure, and particles having a core layer of at least one semiconductive substance selected from among SnO¿2?, In¿2?O¿3?, and Sb¿2?O¿5? and ZnO¿2? and a covering layer of at least one insulating substance selected from SiO¿2?, TiO¿2?, Al¿2?O¿3? and ZrO¿2?. An image display device which has insulating members, arranged in a vacuum envelope, having the above antistatic film formed on the surface thereof is free from the deterioration of display characteristics caused by the change of the track of electrons emitted by the application of voltage, or by a spark in a tube or a leakage current, and accordingly exhibits stable and good display characteristics.
Inventors:
ITO TAKEO (JP)
OYAIZU TSUYOSHI (JP)
MIKAMI AKIRA (JP)
TABATA HITOSHI (JP)
OYAIZU TSUYOSHI (JP)
MIKAMI AKIRA (JP)
TABATA HITOSHI (JP)
Application Number:
PCT/JP2001/007863
Publication Date:
March 21, 2002
Filing Date:
September 11, 2001
Export Citation:
Assignee:
TOSHIBA KK (JP)
ITO TAKEO (JP)
OYAIZU TSUYOSHI (JP)
MIKAMI AKIRA (JP)
TABATA HITOSHI (JP)
ITO TAKEO (JP)
OYAIZU TSUYOSHI (JP)
MIKAMI AKIRA (JP)
TABATA HITOSHI (JP)
International Classes:
C09D7/61; C09K3/16; H01B1/08; H01J29/86; H01J29/87; H01J31/12; (IPC1-7): C09K3/16; C09D201/00; C09D5/00; H01J29/88; G09F9/00
Foreign References:
| JPH08114803A | 1996-05-07 | |||
| US5785892A | 1998-07-28 | |||
| EP0301104A1 | 1989-02-01 | |||
| US5189337A | 1993-02-23 |
Other References:
See also references of EP 1323804A4
Attorney, Agent or Firm:
Suyama, Saichi (1 Kandata-cho 2-chome Chiyoda-ku, Tokyo, JP)
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