| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a touch position from being accurately detected by deviating a sensor characteristic of a load sensor provided in a touch panel display from a desired characteristic based on fastening force acting on a touch pad. <P>SOLUTION: A relation between load Fi applied to the load sensor and output voltage Vi is indicated by a primary function having inclination ai and an intercept bi. A relation between a temperature and the inclination ai is indicated based on the inclination ai at a room temperature (25°C) time and at a high temperature (85°C) time, and a relation between the temperature and the intercept bi is indicated based on the intercept bi at the room temperature time and the high temperature time. The inclination ai and the intercept bi corresponding to a temperature detected in a temperature detecting part are calculated by the relation between the temperature and the inclination ai and the relation between the temperature and the intercept bi. By substituting the calculated inclination ai and the intercept bi, and the output voltage Vi for an expression in which the primary function is converted into an expression of the load Fi, the load Fi of each of the load sensors is calculated. Based on the load Fi, the touch position is detected. <P>COPYRIGHT: (C)2012,JPO&INPIT |
