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Title:
FLUORESCENT LAYER AND DISPLAY DEVICE HAVING THE LAYER
Document Type and Number:
Japanese Patent JP11131059
Kind Code:
A
Abstract:

To obtain a fluorescent layer capable of absorbing light excluding the wavelength range of the light emitted by the fluorescent material and developing high contrast and useful for a plasma display, etc., by using a specific light-emitting particle in combination with a specific light-absorbing material.

This fluorescent layer contains (A) a fluorescent particle emitting visible light by the excitation with ultraviolet rays having a wavelength of ≤200 nm and (B) a material having a light-absorbing power in a wavelength range other than the wavelength of the visible light emitted by the component A (e.g. Fe2O3 absorbing green and blue light, ZnO/TiO2/NiO/CoO absorbing red and blue light or CoO/Al2O3 absorbing red and green light). The fluorescent layer preferably contains ≤5 wt.% of the component B based on the component A. The fluorescent layer is formed in a state containing the fine particles of the component B attached to the surface of the component A or mixed in the space between the particles of the component A e.g. by mixing the component A, the component B and a vehicle to obtain a paste, applying the paste to a desired part by screen printing and drying and baking the applied paste.


Inventors:
Shiiki, Masatoshi
Okazaki, Choichiro
Furukawa, Tadashi
Application Number:
JP1997000298151
Publication Date:
May 18, 1999
Filing Date:
October 30, 1997
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
C09K11/08; C09K11/54; C09K11/55; C09K11/77; H01J9/227; H01J11/02; H01J17/04; C09K11/08; C09K11/54; C09K11/55; C09K11/77; H01J9/227; H01J11/02; H01J17/04; (IPC1-7): C09K11/08; C09K11/54; C09K11/55; C09K11/77; H01J9/227; H01J11/02; H01J17/04