Display device and method of manufacturing display device

A method of manufacturing a display device comprising the steps of:

• a) preparing a display panel with a plurality of pixel regions to emit light, the pixel regions including a defective pixel region where a bright point defect has occurred, the display panel including a first substrate, a display medium layer, and a second substrate, the second substrate facing the first substrate across the display medium layer, being transparent, including a part having a thickness of less than 0.3 mm, and having a main surface on the opposite side to the arrangement side of the first substrate;
• and
• b) forming a light-blocking film on the main surface and on the part, the light-blocking film overlapping the defective pixel region and projecting from the defective pixel region by a width W in a plan view taken from the thickness direction of the display panel, the width W being equal to or more than a width W1 that prevents visual recognition of light emitted from the defective pixel region when the display panel is observed from within a viewing angle.