Method for testing electrical characteristics of digital type touch screen

Abstract

The digital type touch screen to be tested is positioned on the test stage. The hold down strip presses and connects each contact point o the outupt end of the touch screen, transferring the signals to the computer. The touch unit platform is located above the touch screen. The pneumatic indentor points of the touch unit are corresponding to the positions of the press buttons on the touch screen.When the pneumatic switches are turned on, the pneumatic indentor points press each buttons on the touch screen. Thus, whether the press button is qualified can be judged on the computer screen. The invention increases the efficiency and speed for testing the electrical specification of the digital type touch screen greatly. Comparing with hand testing, the invention saves half manpower.

Description

technical field [0001] The invention relates to a method for testing electrical characteristics of a digital touch screen, in particular to a method for testing the electrical characteristics of a digital touch screen that uses a pneumatic needle to press each button on the touch screen. Background technique [0002] Digital Touch Panel is often used in occasions where there are few related keys and a Key Encoder is required in the circuit design, or in some devices that allow a larger key area and are input by fingers is also very common. [0003] The operating principle of the digital touch screen is mainly to set corresponding tiny electrodes (Electrodes) on the opposite surfaces of a flexible film (Film) and a glass substrate (Glass), and set electrodes on the flexible film and glass substrate. There is a circuit device that connects the electrodes to an output terminal (Terminal). When the finger presses the button on the soft film, the two e...

AI Technical Summary

Problems solved by technology

[0006] However, the existing electrical characteristic test method of the digital touch screen needs to use two manpower at the same time to carry out the test, and for all the buttons and output terminals on the digital touch screen, it is necessary to press and contact the measurement one by one, and record Numerical results to judge whether the product is good or bad

Since it is necessary to use the ammeter probe to contact each pair of output terminals one by one, the resistance value must be recorded after the measurement, which makes the test method quite labor-intensive and time-consuming

If it is a product with a large number of buttons, the time and manpower spent on testing alone will be considerable, which will affect the overall production efficiency

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