Patent ID: 7704647
Filing Date: 2010-04-27
Classification: G03F

Abstract:
1. A mask manufacturing method, comprising: providing a transparent substrate with a first region, a second region, and a third region; forming a non-transmitting layer in the first region of the transparent substrate; forming a first photoresist layer on the transparent substrate, and the first photoresist layer exposes the second and the third region of the transparent substrate; forming a first transmitting layer on the transparent substrate and the first photoresist layer; removing the first photoresist layer, wherein the first transmitting layer located on the first photoresist layer is removed at the same time and the first transmitting layer formed in the second and the third region of the transparent substrate is remained; forming a second photoresist layer on the transparent substrate to cover the non-transmitting layer and the first transmitting layer in the second region and expose the first transmitting layer in the third region; forming a second transmitting layer on the second photoresist layer to cover the exposed first transmitting layer; removing the second photoresist layer, wherein the second transmitting layer located on the second photoresist layer is removed at the same time and the second transmitting layer formed on the first transmitting layer in the third region is remained.