| 摘要 |
A method and apparatus for testing a capacitive touch screen or a touch panel (110) as commonly implemented on mobile and other electronic devices (100) (or another touch-sensing device) are disclosed herein. In at least some embodiments, the method involves placing the touch screen (108) in relation to a photoconductive panel (102), for example, a panel made from Cadmium Sulfide, so that the device and panel are adjacent to one another. Then, the panel (102) is illuminated (122) in a known manner, for example, by way of an image displayed on a display (112) of the touch screen (108). Further, upon illumination of the panel (102), the panel conducts in a manner correlated to the illumination. Due to this conducting, capacitance change(s) occur that should actuate the touch screen (110) in a corresponding manner. The capacitance change(s) detected at the touch screen (110) can be compared with the known illumination pattern to determine whether the touch screen is operating properly. |
