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Patent Searching and Data


Title:
CATHODE RAY TUBE AND MANUFACTURE THEREOF
Document Type and Number:
Japanese Patent JPH04218247
Kind Code:
A
Abstract:

PURPOSE: To manufacture a CRT having excellent photoelectric characteristic and electric characteristic by arranging a laminated body containing organic dye, electrically conductive metallic oxide and/or the like on the outer surface of a face plate, and drying up the alcoholic solution applied surface while exposing to heating steam after alcoholic solution is applied thereon.

CONSTITUTION: After purifying the front surface of a face plate 2 by means of abrasive such as CeO2 and alkaline detergent, organic dye is added to solution consisting of Sn+Sb2O3, ethyl silicate mixing solvent, water and acid catalyst, and it is applied uniformly thereon so as to form a film like CTE area 8. Next, NGP area forming solution having a prescribed composition is applied (by the use of airless spray gun for low viscosity sold at a market, and the amount of solution to be used is, for example, 20ml, and for about 30 minutes) on this film like CTE area 8 by means of a spraying method so as to form a film like NGP area 9. Further, by carrying out drying by heating, for example, at 150°C for 30 minutes, strong film like CTE area 8 and film like NGP area 9 can be obtained. This CRT has a wide and stable optical characteristic and high contrast, and prevents panel electrification caused by electrostatic induction, and prevents reflection.


Inventors:
KAWAMURA HIROMITSU
OBARA KATSUMI
KAWAMURA TAKAO
MIURA SEIJI
HIRAI KAZUMASA
ASAKURA SHUNICHI
Application Number:
JP8811191A
Publication Date:
August 07, 1992
Filing Date:
April 19, 1991
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H01J9/20; H01J29/88; H01J29/89; (IPC1-7): H01J9/20; H01J29/88; H01J29/89
Attorney, Agent or Firm:
Yasuo Sakuta