Lighting device and display device

A lighting device comprising:

• light sources arranged in a row direction and a column direction;
• and
• an optical substrate including
• unit light source regions disposed at an interval from light sources and disposed in the row direction and the column direction,
• the unit light source regions including a first unit light source region and a second unit light source region that are adjacent to each other with respect to one of the row direction and the column direction,
• each of the unit light source regions comprising light reflecting portions and light transmitting portions,
• the light reflecting portions reflecting a part of light rays emitted by the light sources and including a first light reflecting portion in the first unit light source region and a second light reflecting portion in the second unit light source region,
• the light transmitting portions transmitting another part of the light rays, the light transmitting portions in the first unit light source region being first light transmitting portions that are arranged with a first pattern and the light transmitting portions in the second unit light source region being second light transmitting portions that are arranged with a second pattern,
• each of the first and second patterns comprising rotationally asymmetric distribution of light transmitting holes, and
• the first light transmitting portions and the second light transmitting portions that are two adjacent light transmitting portions differ in mutual position relations of the first light transmitting portions in the first unit light source region and mutual position relations of the second light transmitting portions in the second unit light source region, wherein
• an area ratio of an area of the first light reflecting portions and a total area of the first light transmitting portions in the first unit light source region is equal to an area ratio of an area of the second light reflecting portions and a total area of the second light transmitting portions in the second unit light source region.