I've done whatever I want

Chapter 28
It was already November, and the cold air from the north had its first round of harassment to the south. There was a hint of coolness in the city of Shanghai, leaving little time for the young man to strive for the top spot on the hero list.

If there is no counterattack in November to knock Wu Lei off the top spot, then we will have to wait until next year.

The teenager wants to make the last effort. Although he will represent the first team of the engineering department in the basketball game next, it will undoubtedly take up a certain amount of time for him, but he will not give up.

On that day, according to the Plato analysis results, the Top 1 Issue was NSOP. NSOP is the abbreviation of English Non Stick On Pad, which means that the solder point on the chip pad is not sticky. This solder point is also the first solder point, also called the first solder point. If a solder joint is not sticky, it actually means a weak solder.

As far as the semiconductor packaging industry is concerned, NSOP in the bonding process is also the most difficult problem.

The teenager decided to do the fishbone diagram analysis of NSOP first, which is more specific and easier to operate than raising the yield rate of the entire process to a higher level.

The gap between the top five is not an insurmountable gap. If the NSOP problem can be improved by 50.00%, there is no doubt that the champion of this year's hero list will belong to a young man.

He has already done Man's factor analysis, and there is very little correlation and little room for improvement.

As for the material material, logically speaking, if gold wire is used for bonding, the possibility of this kind of false soldering is extremely rare, because the gold wire is relatively soft, the boy thought.

Unless the gold wire is oxidized, Kanmingyueguang currently controls the gold wire very strictly and keeps it in a nitrogen cabinet. The use date is strictly in accordance with the process requirements.

Besides, the occurrence of NSOP alarms is random, not a certain batch. If certain batches of products occur frequently, it can be suspected that the material is abnormal.

The boy frowned while thinking.

After some analysis and reasoning, the boy finally denied the material factor.

Equipment, equipment, definitely equipment!
Thinking of the equipment, the young man came to the bonding machine again and carefully studied every movement of the machine.

His serious attitude was the same as that of an old farmer observing the growth of crops. He was completely motionless, not even blinking his eyes, just like a granite sculpture.

While the boy was looking carefully, the sound and light alarm of the machine sounded, indicating NSOP!
Dizzy!I didn't find any signs of anything unusual.The young man scratched his brain, full of questions.

He soon realized that this abnormal change was subtle and could not be captured with his eyes.

Despite this, throughout the morning, whenever the boy had free time, he stared at the machine in a daze.

Under the eyes of the young man, the equipment was working in an orderly manner. The transfer mechanism loaded the lead frame between the continuously heated heating block and the pressure plate. When the position of the lead frame was aligned, the pressure plate pressed down to fix the lead frame on the heating block. At this time, the riving knife moves downward, clamping the gold ball and contacting the liner. In a very short time, the chamfer of the riving knife clamps the gold ball and generates pressure and ultrasonic vibration. The third welding is completed through ultrasonic hot pressure welding. Welding of one solder joint.

When a strand of welding spatter flew up, it also ignited the boy's thoughts. After thinking about the whole process, the boy felt that the subtle movement of the chopping knife and the chip was the key to the problem.

The damage to the riving knife was a middle bone of the big bone of the Machine.

The chip vacuum fixing device is an abnormality and is a middle bone of the big bone of the Machine.

From the analysis of the micro-movement of the chip, the boy found that the Environment is also a very important factor.

The dirt on the surface of the chip is a middle bone of the big bone called the Environment ring.

The silicon debris under the lead frame is a middle bone of the big bone of the Environment ring.

……

After some thought, the boy completed a fishbone diagram analysis of NSOP improvements.

When he got off work, he hurried past the basketball court, and he heard people's voices from afar. It turned out that the opening game of the basketball league had already kicked off!
The boy remembers that day was November 2002, 11. The Rockets challenged the Nuggets away from home, and Yao Ming ushered in his second game since joining the NBA.

At 10 minutes and 41 seconds before the end of the second quarter, Yao Ming turned around and made a jumper outside the left 3-second zone. The ball hit the net and scored the first 2 points of his NBA career.

It was specially arranged by the Personnel Administration Department to choose to start the game on the day when Yao Ming scored his first NBA league goal.

The two teams that debuted in the opening game were the first team of the production department and the personnel administration department of the seed team.

The girls in the day shift in the production department of FOL formed a huge cheerleading squad. They cheered hoarsely for the first team in the production department, which became a beautiful landscape.

The young man walked over quickly. The scene on the basketball court almost became a one-sided situation. The disparity in strength was too great. The Personnel and Administration Department was worthy of being the seeded team. The strength was indeed much higher. The basketball team was always in the half of the first team of the Production Department. Flying.

Pass, shoot, score!
However, the first team of the production department occasionally had a highlight moment. The fat manager Han charged forward alone and stayed in the enemy's half, coldly watching the basketball fly around in his own half. Once the production department When the players of the first team grab the basketball, no matter how far away it is, everyone will throw it towards Director Han.

Unfortunately, the ball lost its precise guidance and passed a little wide!
The girls at FOL covered their eyes and screamed!

Unfortunately, this pass was a textbook level, but Director Han made a fatal mistake and failed to catch the basketball!
The girls at FOL covered their eyes again and screamed!

A rather dramatic scene happened. This time, Manager Han caught the basketball steadily. Under the premise of being unattended, he made a three-step layup by accident and accidentally took four steps. The referee called it a violation. whistle.

The girls at FOL once again screamed in disappointment!
The fourth pass, this time Director Han was no longer disappointed. He finally seized the opportunity and threw a hollow basket with a bang!

The girls at FOL immediately started singing and dancing, just like the ethnic minorities celebrating a festival.

The young man stopped and watched for a few minutes. This kind of ravaging game was not entertaining at all. He looked at the electronic scoreboard and saw that the score was 80:32. There was no suspense about the result.

The young man was about to leave, when he looked up, he saw the beautiful girl Lin Daiyu waving her slender hands and shouting loudly: "Director Han, you have already scored 32 points, you are tonight's MVP!"

The first team of the production department scored a pitiful 32 points in total, and Director Han scored 32 points by himself. So Director Han scored all the shots for the team by himself!
It's amazing!

The boy had never seen such a score before. Later, he heard someone say that Han Huhu gave an order before the game that no one except him could shoot.

While the boy was amazed, the referee blew the final whistle!

Lin Daiyu had long legs, and was the first to rush into the court, trembling all over, jumping into the arms of Director Han who was sweating profusely.

After a while, the boy saw the girls from the FOL production department forming a tight circle, surrounding Director Han in the center.

There is no suspense. With his outstanding performance of 32 points, Manager Han won the MVP of that game. The girls were very excited. They lifted Manager Han high and threw it into the night sky, and let out an overwhelming sound. of cheers.

　Distorted power has made a wonderful MVP!
　　
　
(End of this chapter)