The traditional mercury lamp exposure machine has the following disadvantages:

1. The reflector in use has a luminous angle of more than 45 degrees, and the reflector reflects and diffuses irregularly; As a result, the image resolution of resistance welding is not high, and the yield of precision BGA, resistance welding bridge and other products is reduced.

2. The light intensity distribution is uneven, the overall uniformity of the table top is about 85%, the uniformity of the table top edge is lower, and the utilization rate of the entire table top is less than 80%; As a result, the production efficiency is reduced, the quality consistency is poor, some products are normal in the middle, and the four corners are poorly exposed.

3. The stability of the light source is poor, the service life is about 1000 hours, and the light intensity changes obviously in such a short time; Cause periodic replacement of light source and related accessories, and high maintenance cost.

4. The exposure range is strictly controlled at 80% of the mesa. The energy around and in the middle of the mesa is uneven, and the quality consistency is poor. Because of astigmatism, the exposure qualification rate of precision BGA and solder bridge is low, and there will also be side corrosion of development, solder bridge wire swing and other defects; This increases the difficulty of production control, and the operation must maintain a difficult balance between the precision of resistance welding and the deep curing. The quality stability and consistency are poor, and the yield is reduced.

5. The traditional exposure machine uses high-pressure mercury lamp for luminous imaging and is equipped with air conditioner for cooling. The whole machine exceeds 30KW,; This leads to high energy consumption costs and reduced profit margins.

6. The maintenance is complex, mercury lamp, water jacket, high sub tank, sealing ring, etc., and the maintenance cost is high, resulting in the annual consumption and maintenance cost of about 30000.

7. Due to the limitation of the resolution, it is difficult to develop more precise products. The market limitations appear, and it is difficult to keep up with the development requirements of lighter, thinner, denser and more functional electronic products. This has become a technical bottleneck that restricts the development of the company and affects the development of the company.