Field emission display device with minimal color cross-talk between two adjacent phosphor elements

A field emission display device comprising:

• an upper substrate and a lower substrate, each of which has an inner surface facing the other inner surface in a substantially parallel manner;
• cathode assemblies being formed on the inner surface of the lower substrate, wherein a space exists between two adjacent cathode assemblies;
• anodes being formed on the inner surface of the upper substrate;
• black matrices extending between the anodes and the inner surface of the lower substrate and having a space between two black matrices, wherein each of the cathode assemblies is positioned on the inner surface of the lower substrate in the space between two black matrices;
• and
• R, G and B phosphor elements being formed on the anodes in spaces between the black matrices and on the sidewalls of the black matrices near the anodes, the R, G, and B phosphor elements being disposed so as to respectively correspond to the cathode assemblies,
• wherein one pair of one phosphor element and the corresponding cathode assembly are separated from another pair of one phosphor element and the corresponding cathode assembly by one black matrix that extends between the anode and the inner surface of the lower substrate.

A field emission display device comprising:

• an upper substrate and a lower substrate, each of which has an inner surface facing the other inner surface in a substantially parallel manner;
• cathode assemblies being formed on the inner surface of the lower substrate, wherein a space exists between two adjacent cathode assemblies;
• black matrices, each having sidewalls and each being formed on the inner surface of the upper substrate at a location on the upper substrate inner surface correspondingly above the space between two adjacent cathode assemblies;
• anodes, each of which is being formed on a portion of the inner surface of the upper substrate between two adjacent black matrices;
• and
• R, G, and B phosphor elements formed on the anodes and on the sidewalls of the black matrices near the anodes without a layer therebetween,
• wherein each phosphor element is coated on the surface of the anode and on the surfaces of the sidewalls to create the surface area of each phosphor element on the surface of the anode and on the surfaces of the sidewalls and
• wherein each phosphor element is correspondingly above one of the cathode assemblies formed on the inner surface of the lower substrate and
• further wherein the sidewalls adjacent the phosphor element prevent the electrons emitted from the non-corresponding cathode assemblies from illuminating the phosphor element.

A field emission display device comprising:

• a lower substrate having a lower substrate inner surface;
• an upper substrate having an upper substrate inner surface facing the lower substrate inner surface in a substantially parallel manner;
• an anodes being formed on the upper substrate inner surface;
• a cathode assembly being formed on a portion of the lower substrate inner surface;
• two black matrices having sidewalls being formed on the anodes with a space between the two black matrices, wherein the space between the two black matrices is positioned correspondingly above the cathode ray assembly formed on the lower substrate inner surface;
• and
• a phosphor element being formed on a portion of the sidewalls of the black matrices near the anodes, wherein a phosphor material of R, G, or B phosphor element is thinly coated substantially on the surfaces of the sidewalls without a layer therebetween.