Title:
OXIDE COMPOSITE PARTICLE AND METHOD FOR ITS PRODUCTION, PHOSPHOR AND METHOD FOR ITS PRODUCTION, COLOR FILTER AND METHOD FOR ITS MANUFACTURE, AND COLOR DISPLAY
Document Type and Number:
WIPO Patent Application WO/2001/077233
Kind Code:
A1
Abstract:
An oxide composite particle, characterized in that it comprises an oxide particle matrix and, incorporated therein, at least one fine gold particle or comprises an oxide particle and, carried fixedly on the surface thereof, at least one fine gold particle, and absorbs a visible light having a specific wavelength; a phosphor such as the one emitting red color, characterized in that it have a thin film comprising above oxide composite particles on the surface of particles thereof; a method for producing the phosphor, which comprises incorporating phosphor particles into a dispersion of gold colloid/oxide composite particles, agitating the resultant mixture, and taking out the precipitated phosphor particles, followed by drying; a color filter, characterized in that at least one color filter layer formed inside a panel is a thin film comprising the above oxide composite particles. The above-mentioned phosphor and color filter are excellent in optical characteristics, heat resistance and non-toxicity, and is free from the adverse effect on the radiation of a photoresist with ultraviolet rays; and a color display manufactured by using the color filter exhibits good luminous chromaticity and is excellent in brightness and contrast.
Inventors:
Ito, Takeo (572-113, Magechi Kumagaya-shi, Saitama, 360-0161, JP)
Washiyama, Koji (1-5-3-601, Higashidai Honjo-shi, Saitama, 367-0021, JP)
Oyaizu, Tsuyoshi (3012-4-304, Uwanodai Fukaya-shi, Saitama, 366-0801, JP)
Makihara, Hiroshi (19-23-21-6-209, Nakayama-cho Sag, Ukyo-ku Kyoto-shi Kyoto, 616-8364, JP)
Fukui, Toshimi (4-15-39, Karasaki Otsu-shi, Shiga, 520-0106, JP)
Washiyama, Koji (1-5-3-601, Higashidai Honjo-shi, Saitama, 367-0021, JP)
Oyaizu, Tsuyoshi (3012-4-304, Uwanodai Fukaya-shi, Saitama, 366-0801, JP)
Makihara, Hiroshi (19-23-21-6-209, Nakayama-cho Sag, Ukyo-ku Kyoto-shi Kyoto, 616-8364, JP)
Fukui, Toshimi (4-15-39, Karasaki Otsu-shi, Shiga, 520-0106, JP)
Application Number:
PCT/JP2001/002975
Publication Date:
October 18, 2001
Filing Date:
April 06, 2001
Export Citation:
Assignee:
KABUSHIKI KAISHA TOSHIBA (1-1 Shibaura 1-chome Minato-ku Tokyo, 105-8001, JP)
Ito, Takeo (572-113, Magechi Kumagaya-shi, Saitama, 360-0161, JP)
Washiyama, Koji (1-5-3-601, Higashidai Honjo-shi, Saitama, 367-0021, JP)
Oyaizu, Tsuyoshi (3012-4-304, Uwanodai Fukaya-shi, Saitama, 366-0801, JP)
Makihara, Hiroshi (19-23-21-6-209, Nakayama-cho Sag, Ukyo-ku Kyoto-shi Kyoto, 616-8364, JP)
Fukui, Toshimi (4-15-39, Karasaki Otsu-shi, Shiga, 520-0106, JP)
Ito, Takeo (572-113, Magechi Kumagaya-shi, Saitama, 360-0161, JP)
Washiyama, Koji (1-5-3-601, Higashidai Honjo-shi, Saitama, 367-0021, JP)
Oyaizu, Tsuyoshi (3012-4-304, Uwanodai Fukaya-shi, Saitama, 366-0801, JP)
Makihara, Hiroshi (19-23-21-6-209, Nakayama-cho Sag, Ukyo-ku Kyoto-shi Kyoto, 616-8364, JP)
Fukui, Toshimi (4-15-39, Karasaki Otsu-shi, Shiga, 520-0106, JP)
International Classes:
C01B13/14; C01B33/12; C09C3/06; C09K11/00; C09K11/02; C09K11/08; C09K11/56; C09K11/84; G02B5/20; G02B5/22; H01J1/63; H01J1/74; H01J11/02; H01J29/18; H01J29/20; H01J29/32; H01J31/12; (IPC1-7): C09C3/06; C01G7/00; C09K11/08; G02F1/1335; H01J11/02
Attorney, Agent or Firm:
Suyama, Saichi (Kandahigashiyama Bldg, 1 Kandatacho 2-chome Chiyoda-ku, Tokyo, 101-0046, JP)