Electroluminescent display-panel manufacturing method

A method of manufacturing an electroluminescent (EL) display panel in which pixels of a first color, pixels of a second color, and pixels of a third color are disposed in matrix form, the EL display panel manufacturing method comprising:

• a step of forming a first light-emitting layer on pixels of at least any of said colors;
• a step of directing an ultraviolet laser beam into the first light-emitting layer over a given pixel,
• a step of in an optical amplifier circuit photoelectrically converting into a signal voltage fluorescence or phosphorescence emitted by the first light-emitting layer under excitation by being irradiated with the ultraviolet laser beam:
• a step of inputting the signal voltage into a laser control circuit for controlling the intensity of the ultraviolet laser beam, and with the laser control circuit detecting the relative strength of the fluorescence or phosphorescence emitted by the first light-emitting to detect whether the fluorescence or phosphorescence is a predetermined intensity setting or within a predetermined intensity range, to determine that the first light-emitting layer on the given pixel has become reformed;
• and
• a step of, upon determining that the first light-emitting layer on the given pixel has become reformed, shifting the ultraviolet laser beam to a position on the first-light-emitting layer over a next pixel.