Method for detecting exposure energy of circuit board

Abstract

The invention provides a method for detecting exposure energy of a circuit board. The method comprises a copper-clad plate manufacturing process, a process of manufacturing a separation blade of an exposure guide ruler, and an exposure process; and four groups of retaining walls are manufactured on a copper-clad plate, and respectively correspond to the upper part and the lower part of a lower frame of an exposure machine and the upper part and the lower part of an upper frame of the exposure machine. In an exposure test, the copper-clad plate is shielded by using the separation blade of the exposure guide rule at first, so that the two groups of the retaining walls at the lower part and the upper part of the lower frame of the exposure machine are exposed so as to obtain the intensity of exposure energy; and then the separation blade of the exposure guide ruler is overturned, so that the two groups of the retaining walls corresponding to the upper part and the lower part of the upper frame of the exposure machine can be exposed to obtain the intensity of the exposure energy. According to the method provided by the invention, the special copper-clad plate is used for detecting a value of the exposure energy without exposing the produced circuit board, so that the normal production of the circuit board can not be influenced. Meanwhile, the exposed circuit board can be effectively prevented from flowing into the next procedure. The operation process is simple and convenient; the special copper-clad plate can be circularly used only by washing after the detection is finished.

Description

technical field [0001] The invention relates to a method for detecting exposure energy of a circuit board. Background technique [0002] In today's circuit board industry, exposure machines are required for circuit soldering and other processes. The function of the exposure machine is to cure the dry film. The exposure energy is the intensity of the exposure. The exposure ruler is a transparent long strip of film, and the exposure energy setting value and the actual value are generally not completely consistent, and there will be a deviation of 1 to 2 grids. The exposure energy of the exposure machine directly affects the quality of the production board, and poor exposure directly leads to the scrapping of the production board. [0003] In the traditional circuit board production process, the exposure energy is generally measured by directly fixing the exposure ruler on the edge of the production board after the circuit board is laminated. The number of energy grids is dis...

AI Technical Summary

Problems solved by technology

But the disadvantage of this method of operation is that the boards that have been exposed have to be washed, washed back and redone, which wastes time and greatly affects the progress of the production board.

Moreover, because the exposure scale is relatively narrow, if you do not pay attention, it will cause improper operation, and the board will flow to the next process, which will directly lead to the scrapping of the production board.

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