Patent ID: 9671700
Date: 2017-06-06
CPC Classifications: G02B,G03F

Claim:
1. A digital exposure device comprising: a stage configured to support a substrate; a grating light valve (GLV) comprising a first ribbon and a second ribbon that are spaced apart from the stage in a first direction and extend in a scan direction, the first ribbon and the second ribbon together as a pair are configured to diffract light; an optical system disposed between the stage and the GLV in the first direction, and configured to filter and focus the diffracted light, so as to form a pattern on the substrate; and a control unit configured to: wherein: the second direction width of the pattern is associated with a sum of a width of the first ribbon and the second ribbon in the second direction; the second direction width of the pattern and the scan direction width of the pattern are determined by an exposure amount of the diffracted light during a first time, the first time is constant in each of the bright state and the gradation state, and the first time is determined by dividing an operating period of the GLV by i and delaying an operating timing of the GLV; and the diffracted light diffracted by the first ribbon and the second ribbon is configured to be incident onto a first lens of the optical system in the bright state, the gradation state, and the dark state.