Patent ID: 7898715
Filing Date: 2011-03-01
Classification: G02B

Abstract:
1. An optical element comprising a substrate, partition walls on the substrate, an opening surrounded by the partition walls, and a pixel of dried ink in the opening, wherein each of the partition walls is inclined with an inclination angle of 50° to 80°, the ink has a receding contact angle not larger than 28° relative to the partition walls, and the pixel has an outer edge in contact with the partition walls, the outer edge having a thickness of at least 35% of a maximum height of the partition walls, a difference between a maximum thickness 1 and an average thickness and a difference between a minimum thickness and the average thickness are not larger than 35% of the average thickness in an effective pixel area contributing to display of the pixel, and a thickness of an outer periphery in the effective pixel area is thinner than a thickness of an area inside the outer periphery in the effective pixel area.