LED digital tube unsealing process

Abstract

An embodiment of the invention discloses an LED digital tube unsealing process and solves the technical problems of the prior art that a digital tube display part that is unlike other parts in terms of sealant reacts with an acid at a different speed, an internal lead that is an aluminum wire corrodes more easily than a gold wire, the use of common acid boiling process or an automated chemical corrosion unsealer easily results in extra corrosion to aluminum wires or welding spots during unsealing, and finally analytical accuracy is low. The LED digital tube unsealing process according to the embodiment comprises the steps of I, using a grinder to grind an aluminum wire marker pre-determined in an internal structure of an LED digital tube; II, placing the ground LED digital tube obliquely at 43 to 47 degrees in air; III, using a burette to spray heated concentrated sulfuric acid to the LED digital tube placed obliquely at 43-47 degrees in air; IV, repeating the steps of II to III until the internal structure of the LED digital tube is clear.

Description

technical field [0001] The invention relates to the technical field of electronic detection, in particular to an LED digital tube unsealing process. Background technique [0002] LED digital tubes (LED Segment Displays) are packaged together by multiple light-emitting diodes to form an "8"-shaped device. The leads have been connected internally, and it is only necessary to lead out their individual strokes and common electrodes. The digital tube is actually composed of seven light-emitting tubes in a figure-eight shape, and adding a decimal point is eight. These segments are represented by the letters a, b, c, d, e, f, g, dp, respectively. [0003] In the process of LED digital tube failure analysis, it is usually necessary to unpack the sample and check whether there is any abnormality inside to determine the cause of failure. Since the packaging glue of the display part of the digital tube is different from that of other parts, the reaction speed with acid is different, ...

AI Technical Summary

Problems solved by technology

[0004] An LED digital tube unsealing process provided by the embodiment of the present invention solves the current problem that the packaging glue of the display part of the digital tube is different from that of other parts, and the reaction speed with acid is different, and the internal lead wire is an aluminum wire, which is compared with a gold wire. , easy to be corroded, if the commonly used acid boiling method or automatic chemical corrosion unsealing machine is used, it is easy to cause additional corrosion to the aluminum wire and solder joints during the unsealing process, resulting in technical problems of low analysis accuracy

Images