Black matrix and preparing method thereof, and a display device employing the black matrix

A method of preparing a black matrix comprising:

• injecting into a deposition boat a mixture consisting of 20 to 50 wt % of SiO which is a dielectric material and 50 to 80 wt % of at least one metal selected from the group consisting of Fe, Co, V and Ti, the mixture components having different melting points;
• mounting a panel of a display device on a vacuum deposition device and depositing the SiO and the at least one metal while varying the temperature of the deposition boat;
• and
• patterning the resultant structure by a photolithography process.

A display device comprising:

• a substrate;
• a black matrix formed on the substrate, the black matrix comprising:
• SiO which is a dielectric, and
• at least one metal selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V) and titanium (Ti);
• wherein a content of the SiO decreases and a content of the at least one metal increases, along an incident direction of external light to the display device.

A display device having a black matrix produced according to the method of:

• injecting into a deposition boat a mixture consisting of 20 to 50 wt % of SiO which is a dielectric material and 50 to 80 wt % of at least one metal selected from the group consisting of Fe, Co, V and Ti, the mixture components having different melting points;
• mounting a panel of the display device on a vacuum deposition device and depositing the SiO and at least one metal while varying the temperature of the deposition boat;
• and
• patterning the resultant structure by a photolithography process.

A display device comprising:

• a substrate;
• a black matrix formed on the substrate, the black matrix consisting of:
• a dielectric material comprising SiO, and
• at least one metal selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V) and titanium (Ti).

A display device comprising:

• a substrate;
• a black matrix formed on the substrate, the black matrix comprising:
• a dielectric material comprising SiO, and
• at least one metal selected from the group consisting of iron (Fe) and vanadium (V).