Circuit board electroluminescence detection system and detection method

Abstract

The invention discloses a circuit board electroluminescence detection system, which comprises a transparent insulating adhesive layer containing inorganic electroluminescent powder, a transparent conductive paint layer, an adjustable power supply and a control module, and the bottom of the transparent conductive paint layer is bonded with The transparent insulating adhesive layer of electroluminescent powder, the ground terminal of the adjustable power supply and control module is used to connect the signal ground of the circuit board under test, and the excitation signal output terminal of the adjustable power supply and control module is used to connect the excitation signal of the circuit board under test The signal input terminal, the first power output terminal of the adjustable power supply and the control module are used to connect the power signal input terminal of the circuit board under test, and the transparent insulating adhesive layer containing inorganic electroluminescent powder is used for bonding on the surface of the circuit board under test The adjustable power supply and the second power supply signal output end of the control module are connected to the transparent conductive paint layer through electrodes, and the transparent conductive paint layer can form a controlled AC electric field with the circuit board under test. The invention improves the detection and maintenance efficiency of the circuit board.

Description

technical field [0001] The invention relates to the technical field of circuit detection, in particular to a circuit board electroluminescence detection system and detection method. Background technique [0002] Modern electronic equipment is becoming more and more advanced in function, and at the same time, its structure and scale are becoming more and more complex, and testing and maintenance are becoming more and more difficult. Therefore, research on the testability, maintainability and fault diagnosis of electronic equipment is important to ensure that electronic equipment remains It is of great significance to exert high performance and greatly reduce the maintenance and support costs of electronic equipment. [0003] After decades of development, the fault diagnosis of electronic circuits has made great progress, but for circuits with more discrete components and less complexity, the specific target testability method is still used, which mainly uses external testing....

AI Technical Summary

Problems solved by technology

[0008] The control and observation of the internal nodes of the measured object adopts the online test technology of multimeter, oscilloscope or test bed of needles, so the test of complex systems is difficult and the cycle is long. In addition, the cost of special needle beds and test instruments is high, and the test may be damaged components in the circuit

Images