60s researcher

"Okay, let's rest for a while!" Seeing that he was still talking, Lu Jian quickly said: "I will start the experiment now, don't worry, the circuit diagram has been drawn, I checked it, and there is no problem."

Hearing his words, Lan Mingda was relieved and sat down with peace of mind.

Lu Jian returned to his position, dripped photoresist on the single crystal silicon wafer, and evenly coated it with spin coating technology, so that a layer of photoresist film was formed on the surface of the wafer.The masked circuit is then projected onto the wafer using an optical lens, and the light used here is ultraviolet light.

Lu Jian's hands were steady, and the circuit diagram was perfectly projected on the wafer.

After that, put the photoetched wafer into the developer solution, and then rinse it, put it into the etching solution, and fill it with silicon dioxide for insulation after rinsing...

This process has many steps and is very complicated, but Lu Jian went on smoothly. It was already very late when Lu Jian finished all the steps. Jian Mingyuan and Xu Yan took turns to help in the middle. It was already past four o'clock in the morning when the connection of various components was completed.

Lu Jian rubbed his tired eyes, the magnification of this optical lens is still not enough, if it can be higher, they can generate more transistors, we must know that after the future technology reaches a certain level, tens of thousands of transistors can be divided into one wafer. It's a pity that everything is a dream now.

Lu Jian looked at the people in the laboratory, most of them had already fallen asleep lying on the table, and Jian Mingyuan and Lan Mingda, who kept saying that they would accompany him to wait for the results, were also holding their hands in a daze.Because the last step of chip production is to connect the components, and to fill the metal copper between the transistors, the processes are many and complicated, and many layers need to be repeated. The whole process is almost hundreds of steps, and they have all been completed. I can't stand it anymore.

Lu Jian put the chip in the box, stood up and stretched, and yawned a few times silently, without any intention of waking them up. It's past four o'clock now, so let them rest for a while. Its daybreak.

Thinking so in my heart, Landing Jian picked up the box containing the chip, walked back to his office lightly, then took a sip of water from the water glass, and prepared to lie down for a while, fortunately, it is already May, and the weather is almost [-] Don't worry about them catching a cold.

Thinking of this in his heart, he closed his eyes and fell asleep on his stomach. His mind was so tired that the door was suddenly opened from the outside before he fell asleep.

"Lu Gong, are you here?"

The sound of footsteps came to Lu Jian's table. Lu Jian had no choice but to forcefully open his eyes and get up too fast. It was Lan Mingda who came in. Jian Mingyuan, Zhao Lei and Xu Yan were standing outside the door. He must have woken up suddenly and found that he was not there. .

"The chip is ready, here it is." Knowing what they were thinking, Lu Jian directly took out the box containing the chip from the desk drawer.

Lan Mingda couldn't wait to pick it up, opened it and read it, and asked, "How long has it been since you finished it? Are there any problems? Why didn't you call us? Now you can do the test directly."

Xu Yan who was outside the door also ran in and looked around Lan Mingda.

Lu Jian said helplessly: "Just after four o'clock, you were lying on the table to rest for a while, and you came in."

Lan Mingda nodded, "Then you continue to rest, we're going to do the test." Several people were about to go out after talking.

Lu Jian: "Wait a minute, wait until dawn, many people outside are asleep, you should also rest for a while?" It's already this time, doing the test will definitely wake up everyone else.

Several people were quiet for a while, and at this moment someone ran over again, and the voice had already passed before the person arrived, "Lan Gong, is Lu Gong in the office? Is there no one else?"

Lu Jian: "..." It seems that everyone is awake.

The man came in and saw them like this, he was a little strange, "Gong Lu?"

Lu Jian knew that it was time to sleep, so he could only say: "Let's go, let's go, go to the test now, and get off work early after finishing today."

"Okay." Hearing what he said, Lan Mingda responded and led everyone out. Lu Jian had no choice but to follow behind them.

After a chip is completed, it needs to go through multiple process inspections, and the chances that fail to meet the requirements are discarded.

During the test, Lu Jian didn't get started, just watched. They had done many tests before, and the whole process went smoothly. Lu Jian just watched and gradually became confused, but he still Hold on, after all, this chip is related to their future research.

The tests included contact tests, functional tests, and DC and AC parametric tests.

By the time the sky was bright, the test was finally done.

The test report was in Lan Mingda's hands, and Lu Jian didn't plan to go over to grab it, and sat in his seat waiting for him to announce the answer.

Lan Mingda looked at it carefully, and said happily: "This chip test is very successful and completely meets the requirements. The voltage values ​​obtained in the contact test exceed a specific voltage range, and the branches are above 3V, so they are all open circuits. Circuit logic Functions correctly..."

He reported the numbers one by one, and all the people present were smiling. There was no progress for so long before, and they almost lost confidence. Unexpectedly, the whole experiment was reversed in just one day.

By the time he finished speaking, many people had already cheered.

"My God, it's really a chip with 4000 transistors!"

"We finally did it."

"It's still Lu Gong who has a good brain and figured out a way at once."

"Yes, yes, we've been stuck here for two months."

"Then do you want to start making storage or something?"

"..."

The laboratory is very lively, full of cheers. This is a big difficulty. If only 2002 can be used, there must be many places that are not easy to design because of the relationship between performance. Now it can be regarded as saving a lot of trouble, and the numerical control The volume and weight of the device will also be smaller.

Seeing them like this, Lu Jian was also very happy in his heart, and the mental excitement seemed to have completely suppressed the physical exhaustion.

Just when Lu Jian was about to speak, a voice suddenly came from outside the door, "Hey, what happened to this? So happy? Aren't you still frowning a few days ago?"

But it turned out that Lu Xianfeng had come over. He was standing at the door, looking at them with a half-smile, and Zhai Zhiyuan was standing beside him.

"It's been a busy night, you all go to the cafeteria to have breakfast first! By the way, bring a copy for Lan Gong and me."

Lu Jian said something to the researcher in the laboratory and hurried over, "Mr. Lu, Mr. Zhai, are you here for something?"

The researchers in the laboratory were also tired all night, and they all left obediently. There were only four of them left in the laboratory, Lu Jian and Lan Mingda.

Lu Xianfeng put his hands behind his back, and Man looked around in the laboratory with a very leisurely look, "It's nothing, I just heard that you are very lively downstairs, so come and have a look, see if it is Did something good happen?"

Before Lu Jian could speak, Lan Mingda quickly walked over with the report in his hand, and said with great excitement: "Mr. Lu, Mr. Zhai, take a look at this test report. Our project team has successfully developed Transistor chips."

"Really?" Both of them were surprised when they heard the news, and Lu Xianfeng even grabbed the test report and looked at it.

"Of course, the data from the chip test are all qualified, and there is no problem with the whole circuit." Lan Mingda looked very proud.

Zhai Zhiyuan looked at him in disbelief, looked at him and said, "Didn't you complain yesterday morning, saying that the project is not going well and there is nothing you can do? Why did the test report come out after a day? Didn't you do it on purpose yesterday?" You lied to me." Zhai Zhiyuan still clearly remembered Lan Mingda's loveless look yesterday, the change was too fast, it was hard for people to believe it.

Lan Mingda looked at him pretending to be mysterious and said, "You don't know that, do you? Who let us have Lugong here! Our two-month problem was solved by him at once. Let me tell you, We all wanted to give up yesterday morning, but Lu Gong suddenly ran to the experimental bench to start an experiment. After a day and a night, the second-generation chip was produced, that is, the optical lens is not strong enough. , otherwise we can make better chips.”

After listening to it, Lu Jian always felt that although what Lan Mingda said was close to the truth, it felt like he used an exaggerated technique. It's strange, it should be his tone of voice, right?

Zhai Zhiyuan was also taken aback, "Optical lenses, why do you use this? Do you use photolithography to generate transistors?" He looked at Lu Jian very curiously.

Lu Jian nodded, "That's right, using an optical lens to directly lithographically engrave the entire circuit diagram, but unfortunately the magnification of the current optical lens is not good..." Lu Jian didn't finish the rest of the sentence, many studies are like this, not just a single An independent technology requires the cooperation of various places.

Just when Lu saw regret, Lu Xianfeng, who was still reading the report, suddenly raised his head, frowned and thought about something, and then said hesitantly: "I remember that there is an optical and fine mechanics research institute in S city, maybe there will be Optical lenses with higher magnification. There is also the Institute of Optoelectronic Technology of the Chinese Academy of Sciences in the capital, and there is also an optical research institute in City A. You can try to find it. Maybe those institutes of optics can set up a special lens research project, and it will be convenient in the future.”

Lu Xianfeng was right all of a sudden, and it was quite reasonable. Lan Mingda immediately agreed and said: "That's right, that's right, you must ask, maybe we can produce 6000 and 8000 transistor chips to .”

Lu Jian also thinks it is feasible, but it is better to ask the person in charge of the CNC machine tool project team to report. He still has to go to Mr. Zhou and just tell him the latest progress.