Method for producing reflector and liquid crystal display

By coating and drying a thin film transistor provided with a flat 18 on the organic insulating layer 14 of substrate 16. Next, a pulse-type laser beam is irradiated on the organic insulating layer 18, contact holes 18a and 18b corrugations on the organic insulating layer 18 by ablation. The corrugations 18b are formed having a height of at least four levels.