Detection device and detection method for binding impedance of display screen

Abstract

The invention discloses a detection device and a detection method for binding impedance of a display screen. The device comprises test ports, an impedance test circuit and a signal processing module, wherein the test ports are preset at the binding end of a screen body; the number of the test ports is greater than or equal to three; the impedance test circuit is connected with the test ports and the signal processing module; impedance among the test ports is converted into an electrical signal, and the electrical signal is transmitted to the signal processing module; the signal processing module receives the electrical signal, and whether the binding impedance is uniform or not is judged according to the electrical signal. By using the device and the method disclosed by the invention, the impedances at all the positions can be automatically detected and compared, and further whether the binding impedance is uniform or not is judged. Compared with a method for manually testing the binding impedance in the prior art, the detection method disclosed by the invention has the advantages that a large amount of human and material resources are saved, and the binding output yield is also improved.

Description

technical field [0001] The present application relates to the field of electronic equipment, in particular to a binding impedance detection method and device for a display screen of an electronic equipment. Background technique [0002] With the development of the economy, various electronic devices are becoming more and more common in life. Most electronic devices will be equipped with display screens, such as mobile phone screens, monitors, electronic billboards, etc. In order to obtain a better display effect, the requirements for the performance and quality of the display screen are getting higher and higher. [0003] The material used for the display screen is an important factor that determines the performance and quality of the display screen. Commonly used display screen materials include liquid crystal and glass. In recent years, a display screen using an active-matrix organic light emitting diode (AMOLED for short) as a material has emerged, which is called an AM...

AI Technical Summary

Problems solved by technology

At present, the size of COG IC is constantly increasing, and the pressure of the bonding process is not easy to control, resulting in poor module bonding, which leads to uneven bonding impedance, which easily causes excessive bonding impedance, and further causes abnormal screen display

[0006] Experiments have found that if the bonding impedance is too large, it can cause abnormal phenomena such as slightly bright lines and bright lines on the AMOLED display screen, which seriously affects the display quality of the screen and the yield of the output module.

[0007] In the existing technology, the bonding impedance of the production line is tested manually, but the manual test is not only difficult and inefficient, but also has a large error in the test data. When a large amount of statistical data is required, more manpower and resources are required. equipment, resulting in severe cost pressures

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