Processing technology of thermistor-buried semiconductor circuit board

Abstract

The invention discloses a processing technology of a thermistor-buried semiconductor circuit board. A thermistor semiconductor is welded on a core plate with a prepared pattern according to the neededposition, and next, an optical core plate milled with a groove position in advance, PP and a copper foil stacked structure are stacked to be subjected to lamination for the first time; a substrate which is laminated for the first time is subjected to laser HDI hole puncturing and electroless plating copper and electroplating for the first time; manufacturing of a second layer circuit and lamination of the second time are performed on the substrate after electroless plating copper and electroplating are completed; and next, manufacturing of the first layer and the four layer of circuits and the subsequent procedures are carried out. The circuit board obtained by the processing technology of the thermistor-buried semiconductor circuit board has the electrical performance of the circuit board as well as the functions of the high-reliability and high-stability thermistor, which has a good reputation from clients on the market; and particularly, the processing technology has very high modern smart phone market demand and quite high economic and social benefits.

Description

technical field [0001] The invention relates to a processing technology of a semiconductor circuit board for embedding a thermistor. Background technique [0002] Thermistor, that is, polymer positive temperature coefficient device (referred to as PTC device, PolymericPositive Temperature Coefficient abbreviation), this device can protect the circuit when the current surge is too large and the temperature is too high. When in use, it is connected in series in the circuit. Under normal circumstances, its resistance value is very small, and its loss is also very small, which does not affect the normal operation of the circuit; but if an overcurrent (such as a short circuit) occurs and its temperature rises, it will The resistance value of the circuit rises sharply to achieve the effect of limiting the current and avoid damaging the components in the circuit. When the fault is eliminated, the temperature of the PPTC device drops automatically and returns to a low-resistance st...

AI Technical Summary

Problems solved by technology

So now it has been widely used in various electrical appliances, especially the successive explosions of Samsung mobile phones and Iphon mobile phones some time ago have triggered the explosive growth of this product. How to better use thermistors to protect various electrical appliances The primary consideration of electrical designers, but the current processing technology of buried thermistor semiconductor circuit boards, due to the difference in the thickness of the circuit board and thermistor, and the impedance of the circuit board itself, there are defects such as difficult production, low efficiency, and high cost.

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