公开(公告)号：EP1279705A4

公开(公告)日：2009-01-21

申请号：EP01919800

申请日：2001-04-06

Applicant: TOSHIBA KK

Inventor： ITO TAKEO ,  WASHIYAMA KOJI ,  OYAIZU TSUYOSHI ,  MAKIHARA HIROSHI ,  FUKUI TOSHIMI

IPC: C09K11/08 ,  B82Y20/00 ,  B82Y30/00 ,  B82Y99/00 ,  C01B13/14 ,  C01B33/12 ,  C01G7/00 ,  C09C3/06 ,  C09K11/00 ,  C09K11/02 ,  C09K11/56 ,  C09K11/84 ,  G02B5/20 ,  G02B5/22 ,  G02F1/1335 ,  H01J1/63 ,  H01J1/74 ,  H01J11/12 ,  H01J11/24 ,  H01J11/26 ,  H01J11/42 ,  H01J11/44 ,  H01J29/18 ,  H01J29/20 ,  H01J29/32 ,  H01J31/12

CPC classification number: H01J29/327 ,  B82Y30/00 ,  C01P2002/84 ,  C01P2004/64 ,  C01P2006/60 ,  C01P2006/65 ,  C09C3/06 ,  C09K11/025 ,  C09K11/642 ,  C09K11/7787 ,  C09K11/7789 ,  C09K11/7797 ,  G02B5/20 ,  G02B5/22 ,  H01J29/185 ,  H01J29/20

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.