| 摘要 |
PROBLEM TO BE SOLVED: To provide a nozzle having high accuracy of coating and minified influence in time degradation, in which hole processing having no defect such as a crack is carried out at a hole outlet of the nozzle in the hole processing of the nozzle having high aspect ratio by laser.SOLUTION: When a concave portion is observed in a hole inner wall in preliminarily performed test processing, adjustment increasing laser strength is carried out until no concave portion becomes observed to obtain a nozzle unit 5 having high hardness, which has a defect-free hole in a hole outlet, by using laser in the adjusted laser strength. Phosphor paste of a paste holder 7 is discharged from a hole of the nozzle unit 5 and the phosphor paste is applied to a display panel 4 with good accuracy. |
