Patent Document ID: 9698347
Application ID: 14411708
Patent Status: 1

Claim One:
1. An organic electroluminescence (EL) display panel, comprising: a substrate; and a bank layer on the substrate, the bank layer defining a plurality of first sub-pixel regions that each have an elongated shape and a plurality of second sub-pixel regions that each have an elongated shape and a light-emission color different from a light-emission color of the first sub-pixel regions, the bank layer having an upper portion in which a plurality of concave portions is provided, wherein the concave portions are directly above contact holes, the contact holes providing electrical connections between light-emitting portions and a drive element for driving the light-emitting portions, the light-emitting portions being in the first sub-pixel regions and the second sub-pixel regions, and an electrical insulator being between the concave portions and the contact holes, and in a plan view of the substrate, the first sub-pixel regions are arranged in a first column, the second sub-pixel regions are arranged in a second column, the second column is adjacent to the first column in a direction other than a longitudinal direction of the first sub-pixel regions, each center point in a longitudinal direction of the second sub-pixel regions is not located on a straight line in a lateral direction from each center point in the longitudinal direction of the first sub-pixel regions, the lateral direction being perpendicular to the longitudinal direction of the first sub-pixel regions, the upper portion of the bank layer between the first column and the second column is flat, when an imaginary line is drawn in the lateral direction from a center point in the longitudinal direction of at least one of the first sub-pixel regions, and when, of two intersection points where the imaginary line and an edge of the at least one of the first sub-pixel regions intersect, an intersection point closest to one of the concave portions provided in the bank layer is defined as a reference point, a minimum distance between the reference point of the first sub-pixel regions and an edge of one of the concave portions between two of the second sub-pixel regions closest to the reference point is shorter than a minimum distance between the reference point and an edge of one of the second sub-pixel regions closest to the reference point, the one of the concave portions closest to the reference point is between two of the second sub-pixel regions in the longitudinal direction of the second sub-pixel regions, and another of the concave portions is between two of the first sub-pixel regions in the longitudinal direction of the first sub-pixel regions.