| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a touch panel device with high operability which is provided with a large operation screen at low costs. SOLUTION: A valid operation area AR1 equivalent to the whole size of a touch panel 2 is formed of an operation area (variable display area AR2) for performing an operation to an operation key group whose display is changed by a liquid crystal display device according to the switching of a function and an operation area (fixed display area AR3) for performing an operation to an operation key group fixedly displayed by a fixed display sheet 3. Thus, the screen size of a display device as the variable display area AR2 can be made smaller than the size of the touch panel 2.</p> |
