Patent ID: 7092068
Filing Date: 2006-08-15
Classification: G03F

Abstract:
1. A reticle, comprising: a first mask portion including a first opaque portion, a first exposure monitor pattern provided within a first window portion in the first opaque portion and configured to increase optical transmittances in a first direction, and a second exposure monitor pattern provided within a second window portion in the first opaque portion and configured to increase optical transmittances in a direction reverse to the first direction; and a second mask portion including a second opaque portion, a third exposure monitor pattern provided within a third window portion in the second opaque portion in a position corresponding to the first opaque portion upon alignment with a transferred image by the first mask portion and configured to increase optical transmittances in the first direction, and a fourth exposure monitor pattern provided within a fourth window portion in the second opaque portion in a position corresponding to the first opaque portion and configured to increase optical transmittances in the reverse direction.