Patent ID: 8288081

Claim:
A method, comprising: providing a substrate having a first attenuating layer on the substrate and a first imaging layer on the first attenuating layer; patterning the first imaging layer, including performing a first exposure to the first imaging layer using a first radiation energy in writing mode and performing a first development process; performing a first etching to pattern the first attenuating layer using the patterned first imaging layer as a mask; performing a second etching to the substrate; forming a second imaging layer on the patterned first attenuating layer and the etched substrate; positioning a mask between a light source and the second imaging layer, the mask being spaced from the second imaging layer; patterning the second imaging layer, including performing a second exposure to the second imaging layer using a light energy from the light source and the mask and performing a second development process; and after the patterning the second imaging layer, performing a third etching to the patterned first attenuating layer, wherein the patterned first attenuating layer is patterned via the third etching such that a portion of the patterned first attenuating layer substantially covers a frame region to achieve a black out.