Display device

A display device comprising:

• an array substrate;
• a counter substrate;
• a liquid crystal layer between the array substrate and the counter substrate;
• and
• a light source disposed so as to emit light to a side surface of the array substrate or a side surface of the counter substrate,
• wherein the array substrate comprises:
• a plurality of signal lines arranged with spaces in a first direction;
• a plurality of scanning lines arranged with spaces in a second direction;
• switching elements coupled to the scanning lines and the signal lines;
• an organic insulating layer that covers at least the switching elements;
• and
• a metal layer provided above the organic insulating layer so as to overlap the organic insulating layer,
• wherein each of regions surrounded by the scanning lines and the signal lines has a region having a thickness less than that of the organic insulating layer overlapping the scanning lines and the signal lines in a plan view,
• wherein the metal layer covers a first slant surface of the organic insulating layer, the firsts slant surface being located on a side of the organic insulating layer closer to the light source than the switching element is, and
• wherein the metal layer covers a second slant surface of the organic insulating layer, the second slant surface being located on a side of the organic insulating layer farther from the light source than the switching element is.