| 摘要 |
Disclosed is an information input device which includes a film to remove a pattern after preset time elapses, wherein the pattern is formed by light. Also, disclosed is a method for forming and removing the pattern which comprises the steps of: (a) forming the pattern by irradiating the upper surface of the information input device with ultraviolet rays; and (b) removing the pattern by irradiating the upper surface of the information input device with visible rays. [Reference numerals] (AA) Ultraviolet radiation |
