Patent ID: 9188909
Filing Date: 2015-11-17
Classification: G03F,G03G

Abstract:
1. A developing apparatus, comprising a dipper for accommodating a developer solution and a substrate supporter located in the dipper for placing a substrate to be developed thereon, the substrate supporter allowing light to pass through; wherein, the substrate to be developed is coated thereon with a photoresist of a first color; wherein the developing apparatus further comprises a photodetection unit and a processing unit electrically coupled to the photodetection unit; wherein the photodetection unit comprises: wherein the processing unit is configured to obtain and determine a first time point when the light-emitting module emits detecting light of the second color and a second time point when the light-receiving module receives said detecting light, and to calculate a development time interval, as a difference between the first time point and the second time point, and further to determine that the developer solution has failed if the development time interval is determined to be out of a preset time range.