Black matrix with conductive coating

Details Black matrix with conductive coating Black matrix with conductive coating

1997-03-31

1999-06-15

Padgett, Marianne

Coating processes

Direct application of electrical, magnetic, wave, or...

Polymerization of coating utilizing direct application of...

427553, 427 75, 427 77, 430312, 430313, 430319, 430 25, B05D 512, G03C 500, C08J 704

Patent

active

059120568

ABSTRACT:
A method for forming a conductively coated matrix structure for separating rows and columns of sub-pixels on the faceplate of a flat panel display device. In one embodiment, the present invention deposits a photoresistive material over the interior surface of a faceplate having a non-conductive matrix structure formed thereon. The photoresistive material is deposited into sub-pixel regions separated by the matrix structure. The photoresistive material is dried and exposed in the sub-pixel regions. After unexposed photoresistive material is removed, a layer of aluminum is evaporated over the interior surface of the faceplate such that the matrix structure and the exposed layer of photoresistive material in the sub-pixel regions is coated with a conductive layer of aluminum. Next, the present invention applies an etchant to the exposed photoresistive material disposed in the sub-pixel regions. The etchant removes the exposed photoresistive material and the overlying conductive layer of aluminum from the sub-pixel regions such that the conductive layer of aluminum remains only on the matrix structure, and does not cover the sub-pixel regions.

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"High Resolution Black Matrix Coating"; Acheson Colloids Company; Electrodag CB-800A, Sep. 1997 (printed, R.V. date).

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