| 摘要 |
A security keypad comprising a protective circuit relates to a security keypad (1) capable of sensing key logger type hacking caused by physical penetration. The security keypad comprises an upper keypad (10) of a pad shape in which a plurality of keys protrude from the upper surface; a security circuit substrate (20) which is arranged on the lower part of the upper keypad (10) and comprises a circuit of a predetermined signal pattern inside; and a lower keypad (30) which is arranged on the lower part of the protective circuit substrate (20) and is rolled with the upper keypad (10). The present invention is provided to comprise a security circuit substrate comprising a sub keypad and the security keypad, thereby improving assembly of a product in which the security keypad is applied. The present invention is provided to arrange the security circuit substrate between the upper keypad and the lower keypad; prevent the malfunction of the security circuit substrate in a weak environment of the security circuit substrate; and form a substrate mounting unit in which the security circuit substrate is mounted on the lower keypad, thereby preventing the separation of the security circuit substrate in a high-temperature and high-pressure rolling process. |
