Method of forming pattern

A method of forming a pattern, comprising:

• forming a guide pattern including a first region having a first surface energy and a second region having a second surface energy which is different from the first surface energy on a to-be-processed film, the first and second regions alternately arranged in one direction
• forming a block copolymer layer on the guide pattern, the block copolymer comprising of a first polymer block and a second polymer block;
• and
• causing microphase separation in the block copolymer layer to arrange the first and the second polymer block according to the guide pattern, the microphase-separated structure is a lamellar block copolymer pattern in which the first polymer block and the second polymer block are arranged alternately in the direction of the alternative arrangement of the first and second regions and the interface of the first polymer block and the second polymer block are perpendicular to the surface of the to-be-processed film;
• where the first surface energy is almost the same as a surface energy of the first polymer block,
• the second surface energy is almost the same as a surface energy of the second polymer block,
• a pitch of the guide pattern is n times a pitch of the block copolymer pattern, wherein n means an integral number of three or more, and
• each width of the first and second regions in the direction of arrangement of the first and second regions is m times of a half pitch of the block copolymer pattern, wherein m means odd number of three or more.