Radar circuit board air chamber manufacturing process

Abstract

The invention discloses a radar circuit board air chamber manufacturing process. The process comprises the following specific steps of: a, preparing an up-down layer A, and drilling holes in the layerA as required, wherein the layer A comprises an upper layer L1 and a lower layer L2; b, preparing a layer B, pasting bonding sheets on the upper and lower surfaces of the layer B and drilling holes in the layer B and the bonding sheets, wherein the layer B comprises an upper layer L3 and a lower layer L4; and c, preparing a layer C and laminating the layers A, B and C from top to bottom, whereinthe layer C comprises an upper layer L5 and a lower layer L6. According to the process, an air chamber is designed in a circuit board in a semi-enclosed manner, so that the process is suitable for theapplication in the aspects of automobile reversing radar and the like. The laminated circuit board does allow any wet process, so that water and solution are prevented from flowing into the air cavity through the holes and remaining in the air chamber to cause scrap. The process is clear, efficient and long in service life.

Description

technical field [0001] The invention relates to the field of circuit board processing, in particular to a manufacturing process of an air cavity of a radar circuit board. Background technique [0002] At present, the use of cars is becoming more and more common. In order to avoid collisions during car reversing and improve driving safety, many cars will be designed with reversing radar as an auxiliary device for parking and reversing. Some high-end car reversing radar circuit boards will have an air cavity design. , has achieved more sensitive detection of obstacles behind the reversing vehicle and more accurate testing of the distance between the rear end of the car and obstacles in order to give timely warnings and avoid accidents, but if the air cavity of the radar circuit board is designed as a semi-closed Therefore, it is impossible to process the circuit board using ordinary manufacturing processes, and the solution or water of the wet process flows into the air cavity...

AI Technical Summary

Problems solved by technology

[0002] At present, the use of cars is becoming more and more common. In order to avoid collisions during car reversing and improve driving safety, many cars will be designed with reversing radar as an auxiliary device for parking and reversing. Some high-end car reversing radar circuit boards will have an air cavity design. , has achieved more sensitive detection of obstacles behind the reversing vehicle and more accurate testing of the distance between the rear end of the car and obstacles in order to give timely warnings and avoid accidents, but if the air cavity of the radar circuit board is designed as a semi-closed , it is impossible to process circuit boards using ordinary manufacturing processes, and a series of quality problems are caused by the solution or water of the wet process flowing into the air cavity and remaining in the air cavity