Method and System for Performance Testing Touch-Sensitive Devices
First Claim
1. A method of testing a capacitive touch-sensing component, the method comprising:
- positioning a first surface of the capacitive touch-sensing component adjacent to a photoconductive material;
illuminating at least one portion of the photoconductive material;
detecting a status of at least one part of the capacitive touch-sensing component; and
determining whether the status or a characteristic relating to the status satisfies a requirement relative to the illuminating.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for testing a capacitive touch screen of a touch panel as commonly implemented on mobile and other electronic devices (or another touch-sensing device) are disclosed herein. In at least some embodiments, the method involves placing the touch screen in relation to a photoconductive panel (for example, a panel made from Cadmium Sulfide) so that the device and panel are adjacent to one another. Then, the panel is illuminated in a known manner, for example, by way of an image displayed on a display of the touch panel. Further, upon illumination of the panel, the panel conducts in a manner correlated to the illumination. Due to this conducting, capacitance change(s) occur that should actuate the touch screen in a corresponding manner. The capacitance change(s) detected at the touch screen can be compared with the known illumination pattern to determine whether the touch screen is operating properly.
36 Citations
20 Claims
-
1. A method of testing a capacitive touch-sensing component, the method comprising:
-
positioning a first surface of the capacitive touch-sensing component adjacent to a photoconductive material; illuminating at least one portion of the photoconductive material; detecting a status of at least one part of the capacitive touch-sensing component; and determining whether the status or a characteristic relating to the status satisfies a requirement relative to the illuminating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An apparatus for testing a capacitive touch screen, the apparatus comprising:
-
a photoconductive structure having a first surface that is configured to be positioned adjacent to a complementary surface of the capacitive touch screen, wherein the photoconductive structure is operable to receive light from a light source and to experience a conductance change along at least one portion of the first surface at which the light is received. - View Dependent Claims (16, 17, 18)
-
-
19. A capacitive touch screen testing apparatus comprising:
-
a capacitive touch sensing component; an optical display component; at least one memory component configured to store test image information; and at least one processing component coupled at least indirectly to each of the capacitive touch sensing component, the optical display component, and the at least one memory component, wherein the at least one processing component is configured to (1) make a determination, based upon first signals communicated between the at least one processing component and the capacitive touch sensing component and second signals communicated between the at least one processing component and the optical display component, of an extent to which one or more changes in capacitance sensed by the capacitive touch sensing component correspond to one or more images displayed by the optical display component based upon the test image information, and (2) control a calibration of one or more of the capacitive touch sensing component and the optical display component based upon the determination. - View Dependent Claims (20)
-
Specification