Patent ID: 7192334

Claim:
A method for making a light-emitting display device having a substrate with light-emitting layers on a surface of the substrate and constituting pixels, light emission from the pixels being electrically controlled, and having barriers delimiting at least one side of each respective pixel, comprising: forming a mask pattern on a surface of the substrate, the mask pattern corresponding to the pattern of the barriers to be formed; spraying first sandblasting particles onto the surface of the substrate to chip off exposed regions of corresponding pixels, not covered by the mask pattern, to form grooves having a depth corresponding to a height of the barriers; and spraying second sandblasting particles, smaller than the first sandblasting particles, onto the surface of the substrate to form irregularities producing light scattering on the side walls and bottoms of the grooves, a difference between a maximum height and a minimum height of the irregularities being at least 0.4 mm and, on the surface of the substrate, at least part of each region corresponding to a pixel having irregularities producing light scattering.