Emissive display device

Abstract

To obtain a paste for electron sources which can enhance heat resistance of carbon nanotubes, which can suppress burn-out of the carbon nanotubes even during heating at a high temperature, and can exhibit a high electron emission performance, boron (B) is added to the paste formed of the carbon nanotubes and metal. Due to the addition of boron, the oxidation of the carbon nanotubes can be suppressed, and the degradation of the electron emission characteristics and the degradation of the uniformity of the emission of electrons during the heating process such as baking can be prevented.

1 - 14 . (canceled)  
     
     
         15 . A display device comprising: 
 cathode lines having an electron source film, control electrodes and an anode having phosphors, wherein the electron source film includes a metal particle or a particle of an alloy thereof, inorganic carbon material which is an electron source, and boron (B), and    the boron is contained in at least one form selected from the group consisting of boron in a single form, a solid solution of boron and another metal, an inter-metallic compound of boron and another metal and a compound containing boron.    
     
     
         16 . A display device according to  claim 15 , wherein the inorganic carbon material includes carbon nanotubes or carbon nanofibers.  
     
     
         17 . A display device according to  claim 15 , wherein the inter-metallic compound includes silver boride (AgB 2 ) or nickel boride (Ni 3 B or Ni 2 B).  
     
     
         18 . A display device according to  claim 16 , wherein the inter-metallic compound includes silver boride (AgB 2 ) or nickel boride (Ni 3 B or Ni 2 B).  
     
     
         19 . A display device according to  claim 16 , wherein a content of the carbon nanotubes or the carbon nanofibers is approximately not less than 1% by weight with respect to a total quantity of the inorganic carbon material.  
     
     
         20 . A display device according to  claim 15 , wherein the metal or the alloy includes at least one element selected from a group consisting of Ag, Ni, Au, Al, Fe, Cu, Zn, Pd, W, Mo, Ta, Ti, Cr and Ir.  
     
     
         21 . A display device according to  claim 16 , wherein the metal or the alloy includes at least one element selected from a group consisting of Ag, Ni, Au, Al, Fe, Cu, Zn, Pd, W, Mo, Ta, Ti, Cr and Ir.  
     
     
         22 . A display device according to  claim 15 , wherein the metal or the alloy contains at least one of Ag or Ni as a main component.  
     
     
         23 . A display device according to  claim 16 , wherein the metal or the alloy contains at least one of Ag or Ni as a main component.