Method of manufacturing display device

A method of manufacturing a display device, comprising:

• preparing a first substrate in which a first display element part including a first display element, a first extension part including a first mounting portion, a second display element part including a second display element, and a second extension part including a second mounting portion are formed, the first display element part and the first extension part being located in a first region above a first support substrate, and the second display element part and the second extension part being located in a second region neighboring the first region above the first support substrate;
• preparing a second substrate in which a first peeling auxiliary layer opposed to the first display element part, a second peeling auxiliary layer opposed to the second display element part and spaced apart from the first peeling auxiliary layer, a sacrifice layer opposed to the first extension part and the second extension part, a first color filter layer located above the first peeling auxiliary layer, and a second color filter layer located above the second peeling auxiliary layer, are formed, the first peeling auxiliary layer, the second peeling auxiliary layer, the sacrifice layer, the first color filter layer, and the second color filter layer being located above a second support substrate;
• attaching the first substrate and the second substrate in a state in which the first extension part and the second extension part are opposed to the sacrifice layer, the first display element part being attached to the first color filter layer, and the second display element part being attached to the second color filter layer;
• and
• radiating a laser beam on the second substrate, and peeling the second support substrate from the first peeling auxiliary layer and the second peeling auxiliary layer while blocking the laser beam by the sacrifice layer.