Patent ID: 8072580
Filing Date: 2011-12-06
Classification: G03F

Abstract:
1. A maskless exposure apparatus, comprising: an optical unit for generating light available for exposure; and a digital micro-mirror device (DMD) unit including a first row of DMDs and a second row of DMDs, each of the first row of DMDs and the second row of DMDs being configured to selectively reflect the light transferred from the optical unit to irradiate a substrate with the light, wherein each of the DMDs in the first row of DMDs is spaced apart from adjacent DMDs in the first row of DMDs by a predetermined distance and each of the DMDs in the second row of DMDs is spaced apart from adjacent DMDs in the second row of DMDs by a predetermined distance, and wherein each of the DMDs in the first row of DMDs only partially overlaps any one DMD of the second row of DMDs.