Photocurable composition and liquid crystal display device

A photocurable composition comprising:

• component (A):
• epoxy compound;
• component (B):
• acrylic ester compound;
• component (C):
• isocyanate compound;
• component (D):
• photobase generator;
• and
• component (E):
• compound having a thiol group,
• wherein the component (A) has two or more epoxy groups in one molecule, the component (B) has two or more acryloyl groups in one molecule, the component (C) has two or more isocyanate groups in one molecule, and the component (E) has two or more thiol groups in one molecule,
• wherein when a total sum of the component (A), the component (B), the component (C), the component (D), and the component (E) is set to 100 parts by mass, the Component (B) is included in a range of 5 parts by mass or more and 10 parts by mass or less, the component (C) is included in a range of 5 parts by mass or more and 10 parts by mass or less, and the Component (D) is included in a range of 0.2 parts by mass or more and 0.5 parts by mass or less, and
• a ratio of a total mass of the component (A), the component (B), the component (C), and the component (D), to a mass of the component (E) is (the component (A)+the component (B)+the component (C)+the component (D)):
• the component (E)=54.3:45.7 to 45.3:54.7,
• and wherein the photocurable composition has a total light transmittance of 95% or more, a viscosity change rate of less than 10% after being stored at a low temperature of 5° C. for three days in a light-shielding container, and does not cure immediately after ultraviolet light irradiation having an integrated light amount of 3,000 mJ/cm2, but has a delayed heat-curing that, while initiated by the ultraviolet light irradiation, is controlled by temperature.