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Uvled curing ink and embrittlement
CLASS: LG UVLED      DATE:2016-3-24    SOURCE:www.longstartech.com.cn

Uvled after decades of rapid development, not only in the technical maturity reached a very high level, the promotion in practice. In the process of gradually replace the traditional lamp, UVLED technology has been greatly developed.

Bare chip semiconductor components manufactured before packaging products, is normally present in wafer form or in the form of a single chip package, semiconductor devices, integrated circuits become more complex, or a part of the circuit.

The IC chip is directly bonded to the liquid crystal display of LCD glass on the bottom surface, flip chip technology has been the development of a number of bare chip is pasted on the glass. This assembly is the use of UV curing adhesive to complete the requirements of UVLED UV curable adhesive has excellent adhesion and low water absorption of glass and bare IC chips, especially the purity of UV UV curable adhesive should be very high and very low ion content.

At present, the industry has been replaced by LED curing lamp curing, high pressure mercury lamp type curing equipment LED curing machine is different from the traditional; traditional UV light curing machine looks very bright brightness, high calorie, in fact, its spectrum is very wide, it is a effective curing effect of ultraviolet spectrum is only a part of the energy, a large part is visible in the section and the heat, the operator of the serious eye damage and is easy to cause the workpiece deformation, using the LED point light source, a high purity 365nm monochromatic ultraviolet light, which belongs to the cold light source; the workpiece temperature rose by only 3 degrees, not deformation processing, the energy is highly concentrated in the effective curing effect of a UV spectrum, which is the UV-LED point light source although only UV light intensity of about 200MW, but its actual effect and intensity of 1000 The main reason for the curing effect of -2000mw high pressure mercury lamp be roughly the same, usually the curing time is shortened to 0.5 to 5 seconds.

General UV light solid ink requirements for 80-120w/cm power, light energy is too high will cause embrittlement ink, light energy is too low to reach the curing effect. UV curing machine in use at the same time, it will produce a lot of heat, so that the machine body temperature rising, light machine at the top of UV curing machine cabinet with ventilation device, and the ozone generated during the curing process exhausted to the outside through the exhaust pipe, so as to achieve the purpose of cooling.

The rapid development of the Uvled light curing machine technology also led to the development of many other peripheral products, such as UV curable ink. The raw materials supporting the use of this and got rapid development in the rise of UVLED curing technology.