Patent ID: 8691481
Filing Date: 2014-04-08
Classification: G03F

Abstract:
1. A local exposure method of locally performing exposure processing by dividing an undeveloped photosensitive film formed on a substrate into a plurality of large blocks, relatively moving the substrate below a plurality of light emitting elements arranged in a line shape and in a direction intersecting with an arrangement direction of the light emitting elements, and selectively controlling a light emission of the plurality of light emitting elements based on a required large-block illuminance of irradiation obtained in the following steps for each of the large blocks, said local exposure method comprising the steps of: dividing a large block of the plurality of large blocks into a plurality of small blocks; setting small-block irradiation illuminances different in a stepwise fashion for the small blocks in the large block respectively; controlling the light emission of the light emitting elements based on the small-block irradiation illuminances respectively set for the small blocks for the undeveloped photosensitive film on the substrate moving with respect to the plurality of light emitting elements; developing the undeveloped photosensitive film which has been subjected to exposure processing by irradiation by the light emitting elements, to form a developed photosensitive film; measuring a residual film thickness of a photosensitive film pattern of the developed photosensitive film at each of the small blocks which have been subjected to the developing step to obtain correlation data between the small-block irradiation illuminances set for the small blocks and the measured residual film thickness at each of the small blocks; and obtaining the required large-block illuminance of irradiation for each of the large blocks from a target residual film thickness set in advance for each of the large blocks based on the correlation data.