Capacitive touch screen automatic test method

Abstract

The invention provides a capacitive touch screen automatic testing method. The capacitive touch screen automatic testing method is used for testing assembly tolerance between a display panel and an inductive panel of a capacitive touch screen. The method comprises the following steps that: the capacitive touch screen is loaded; a transparent substrate is made to move to a position above the capacitive touch screen, a conductive element is made to contact with touch test points of the capacitive touch screen; assembly corners of the display panel and the inductive panel and the images of the touch test points are obtained respectively; the capacitive touch screen and the conductive element are made to form a current loop, and the capacitive touch screen is made to display inductive points of corresponding touch test points, and the obtained images of the touch test points comprise the images of the inductive points; and whether the value of a distance that the edge of the inductive panel deviates from the edge of the display panel is in an allowed range is judged, and whether the values of distances that the inductive points deviate from the touch test points are in an allowed range is judged, and if the value of the distance that the edge of the inductive panel deviates from the edge of the display panel is in the allowed range, and the values of the distances that the inductive points deviate from the touch test points are in the allowed range, the capacitive touch screen is tested as qualified. With the capacitive touch screen automatic testing method of the invention adopted, automatic testing can be realized, and testing precision can be improved.

Description

technical field [0001] The invention relates to a testing method, in particular to an automatic testing method for a capacitive touch screen. Background technique [0002] With the development and progress of electronic technology, in order to enhance the convenience of operation of electronic products, capacitive touch screens are widely used. When manufacturing a capacitive touch screen, it is usually necessary to manually align the display panel and the sensing panel and paste them together, and the assembly quality directly affects the sensing accuracy of the capacitive touch screen. [0003] Traditionally, when testing capacitive touch screens, manual testing methods are used, that is, personnel manually measure the error of the assembly corner of the display panel and the sensing panel, and then judge whether the distance between the edge of the sensing panel and the edge of the display panel is within the allowable range. within range. [0004] However, the above-me...

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Problems solved by technology

[0004] However, the above-mentioned manual testing method requires a long testing time and is prone to large errors

In addition, only the error of the assembly corner of the display panel and the sensing panel is measured. Even if the judgment is qualified, the problem that the sensing accuracy of the capacitive touch screen does not meet the requirements will still occur in practice.

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