Method of manufacturing liquid crystal display device

A method of manufacturing a liquid crystal display device, comprising the steps of:

• preparing a first substrate having a plurality of array regions arranged in a first direction and a second direction orthogonally crossing the first direction;
• forming a seal material having an injecting mouth in each of the array regions on the first substrate;
• forming a peripheral seal material arranged outside the array region and extending in the first and second directions, the peripheral seal material having an exhaust opening provided at a portion of the peripheral seal material extending in the second direction on the first substrate;
• forming a dummy seal material between the peripheral seal material extending in the first direction and the seal material formed in the array region;
• arranging a second substrate on a surface of the first substrate in which the seal material is formed on the surface, in a jig;
• decompressing the inside of the jig;
• exhausting atmosphere between the first and second substrates in the jig while applying a pressure to the first and second substrates;
• attaching the first and second substrates to form a substrate set by curing the seal material, the peripheral seal material and the dummy seal material;
• cutting the substrate set into display panel units each having a plurality of liquid crystal display panels;
• and
• injecting a liquid crystal material into the respective display panels through the injecting mouth.