Patent ID: 7388653
Filing Date: 2008-06-17
Classification: G02F,G03F

Abstract:
1. A divisional exposure method, comprising: providing a masking panel including an arc-shaped slit for selectively transmitting light from a light source, the slit including taper portions such that an area proximate a taper portion transmits less than full light intensity onto a photoresist layer, wherein the end of each of the taper portions has a linear edge, and wherein the exposure mask has one single arc-shaped slit in one masking panel; providing a pattern mask below the exposure mask, the pattern mask selectively transmitting light corresponding to a thin film pattern; providing a substrate below the pattern mask, the substrate to be provided with the thin film pattern; dividing the substrate into a plurality of shots; exposing the photoresist layer in the area corresponding to a first shot of light; moving the pattern mask and the substrate relative to the masking panel and the light source; and exposing the photoresist layer in an area corresponding to a second shot of light; wherein the area corresponding to a boundary area of the first shot and the second shot is covered by an overlap of taper portions of the slit and the portion of the photoresist disposed at the boundary area of the first shot and the second shot are twice exposed to light, resulting in the twice exposed boundary areas being exposed with the same intensity as the other exposed areas.