Method for producing a flash discharge tube

摘要

A method for producing a flash discharge tube (10) comprising a trigger electrode (326) composed of a transparent conductive film (34) formed on a surface of a light-transmissive sealed tube (12), said method comprising the steps of coating said surface of said light-transmissive sealed tube (12) in accordance with an immersion method with a solution of an organic metal compound containing a major component metal of indium or tin as a transparent conductive material, drying said surface followed by allowing hot air to blow against only a portion for forming said transparent conductive film (34), of a coating layer (34a) of said transparent conductive material to perform local calcination by oxidizing indium or tin contained in said transparent conductive material, and then removing a non-calcinated portion of said transparent conductive material by means of etching with an acidic solution to form said transparent conductive film (34) in a band-shaped configuration on said surface of said light-transmissive sealed tube (12). <IMAGE>