Chapter 467 Progress in Lubyanka

For each chip, there is a set of four photolithography drawings. The PMOS process that Gao Zhendong is temporarily going to use is the simplest one. He even put aside the last step of passivation for the time being. In short, the priority is to get it done.

4 drawings are used to form the P region, gate, external contact holes, and internal wiring of the chip. Finally, the wires are led out through the bonding block, and it is done.

Moreover, the process this time is extremely extensive, with a line width of 80μm. The reason for using this line width is the success rate. The first few chips are mainly used to demonstrate the principle and process feasibility, so it is better to be more extensive.

At the same time, it is also convenient for making masks, etc. 80μm can be directly processed with the help of auxiliary tools.

Moreover, although the line width is larger, it has higher reliability. As for power consumption, haha, there are many things in the circuit that consume more power than integrated circuits, so it is not meaningful for integrated circuits to save this little bit.

Even with such a large line width, the area occupied by 14 pins is still too large to be fully occupied, not to mention NAND gates and NOR gate chips. Even for the much more complex D flip-flop, it is still a bit too large and impossible to fully arrange them.

Gao Zhendong finally understood why C8008 had to use that weird 18 pins. The physical space on the chip was completely unusable, so why use more pins? Isn't it better to save costs? However, it eventually led to the interface pins of C8008 being stretched to the limit and had to be reused in large quantities. Not only C8008, but also C1103, which is also Intel's stubbornness.

In the early days of information technology, many major companies made foolish moves similar to Intel's.

Although the omnidirectionally adjustable mask stage has not been developed on the basis of the workbench, in the first generation of the process, Gao Zhendong does not plan to make the mask stage omnidirectionally adjustable. It is enough to be able to adjust the height and tilt. To put it bluntly, it can be adjusted with screws. There is no difference between this and the finished product. It is just a rack for holding masks.

The mask stage and optical system are semi-fixed, which reduces the difficulty of the lithography machine to a minimum without affecting its usability.

After arranging this matter, Gao Zhendong told Lou Xiaoe about his business trip when he got home from get off work. Lou Xiaoe was quite understanding: "Ten days? Then I will go home and stay during that time."

After saying that, she hugged Gao Zhendong's neck and said, "But, you have to go out and play with me on the weekend, haha."

It’s just compensation, Gao Zhendong understood and nodded repeatedly.

But Gao Zhendong perfectly adhered to the virtues of his previous life: You can go wherever you want, you make the strategy, and I will follow you to provide manpower and money.

Fortunately, Lou Xiao'e is now a person with her own ideas. There are still a few days left, which is enough time for her to think about where to go.

The next day, as soon as Gao Zhendong arrived at the office, he started editing documents on the computer.

He wants to separate the design part from "Integrated Circuit Design and Manufacturing". It's time for Beijing University of Technology to start a new course.

In fact, there is no other way. With the progress of various sub-processes of integrated circuits, the opening of this course has become urgent.

Apart from anything else, even large-scale advanced ICs such as CPUs, he has the channels and his own methods to make them, and does not need too many people to get involved. However, this matter cannot be done by him alone, and he has to leave seeds behind.

The entire CD4000 series or 74/54 series involves hundreds or even thousands of chips. These chips are all useful in the circuit. There is no way now, but once the application of digital circuits becomes popular, it will be too complicated to rely on NAND gates and NOR gates to build digital circuits bit by bit. It will be a huge waste of resources, manpower and cost.

Taking the three chips he is preparing to make as an example, although the D flip-flop is many times more complicated than the four-2-input NAND gate, the difference in mass production cost is not that big if you put aside the design. The importance of finished functional digital chips is that they can effectively reduce costs, improve design efficiency, and improve work reliability.

It is impossible for him to devote himself to this matter for a long time, so the simplest way is for him to train a group of people and then have these people directly devote themselves to this matter.

In Gao Zhendong's opinion, the third and fourth year students in relevant majors at Beijing University of Technology are the best. They have sufficient professional background knowledge, are smart and motivated, and can even start working at the school.

As for the leaders of these works, he planned to start with the three people sent by the Defense Work Committee.
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At about the same time, in a building next to Lubyanka Square, several Russians were communicating with each other.

"I think you have to give me something new, my dear Davari. Both the military and civilian sectors are now complaining that there has been no improvement in our work with our comrades in the south."

An old Russian sitting opposite him disagreed: "Comrade, the southern comrades only have social and economic value, not technical value. Our main focus should still be on the west."

"Davri, but the department that complained to me obviously has different ideas from you. They have to waste precious rubles to import steel, computers, and software from the south. Even in the military field that we have always been proud of, we have to start using high-value technology to exchange for something with them."

"But." "No buts. I didn't call you here today to listen to your explanations, my dear Davari. What I want is results." The comrade who complained emphasized his tone.

"Well, my comrade, we are trying. You know, unlike in the west where we can almost blend into the sea like rain, we are too conspicuous in the south. We must find enough 'bridges' first, otherwise we can't do anything concrete."

"My dear Davari, you can't use the same reason too many times!"

"There is good news, comrade. We are not without results."

"Well, tell me about it. I hope your 'results' can at least satisfy me in front of others." The person who complained softened his tone.

He was under a lot of pressure. In fact, even within the Russians, the people in Lubyanka were far from being as all-powerful as the legend said. They had a lot to fear and consider.

"Thanks to the efforts of our comrades over there, we finally determined the source and scope of the things they were interested in. You know, we over there are mainly technical personnel, and there are not many technical personnel willing to cooperate with us. They have their own pride, and our work is very difficult." An old Russian talked about his gains and, by the way, found enough excuses for the slow pace of his work.

"Ha, ahaha! Listen, my Davari, listen, what a significant achievement this is! It really surprises me. Is this the so-called progress you have made after spending so much time on it? Ah, Davari, you remind me of our colleagues in the Middle East. They would even be proud of having obtained a civilian injection for large-scale use among the people!"

Perhaps it was because this "progress" was too perfunctory, which caused the Russians who kept urging the work to make merciless ridicule. The sarcastic attitude was so obvious that it was as obvious as John Bull's attitude when he mentioned the Gallic S2's rapid slide to its knees.

"No, comrade, I think you are smarter than me. If you listen to me, you will know whether our progress is meaningful. There are signs that most of their technology, whether for military or civilian use, comes from a steel company in the southern capital."

Hearing his words, the sarcasm intensified: "My dear Davari, tell me, how much Vodka did you drink this morning before going to work? Those are several completely unrelated fields from a steel company? Your words are as ridiculous as the bread I ate this morning came from a slaughterhouse full of blood."

"No, I'm sober. I'll definitely go drink some later, but right now, I haven't touched that stuff for 8 hours. You have to believe me."

This sentence made the comrade who had been complaining sit up straight: "Are you sure?"

"Sure!"

This answer, which was not tinged with alcohol, made the complaining comrades realize that even if they only got this little bit of information, it might be a remarkable progress.

"Well, I admit that if you are telling the truth, then this information may be very valuable. Do you have any further news, Mr. Davari?"

"No, we have only come this far, but as long as the bird emerges from the clouds, there will always be a chance for us to catch it, won't there, my dear comrade?"

The comrade who complained didn't know whether what the other party said about no further action was true or not, but at least he had an excuse to report.

"Well, I expect you to get something as soon as possible. Please give me a report on the current situation, Davari."

After watching several Davari people in charge of southern affairs leave, the expression on his face relaxed a little. If only there was a university called Cambridge there, he couldn't help feeling a little resentful.

At the same time, the leaders of the Defense Work Committee were listening to the report.

"Tell me, Gao Zhendong is paying out of his own pocket to ask Factory 1274 through the Research Institute to process a batch of special infrared components?" The leader asked with a smile and interest.

"Yes, but Comrade Zhendong didn't say what it was used for. It seems that he used it himself."

"Haha, what is this kid doing secretly again? It's really exciting." The leader was not worried that Gao Zhendong was going to do anything bad. He was just very curious. What special thing was Gao Zhendong going to do by paying out of his own pocket in such a mysterious way?
The last time this happened, it was with the laser, and the time before that, it was with the DJS-59. Oh, by the way, the same thing happened with those software and the DJS-60D.

However, the leader is not going to intervene. This kid is very steady. When the time comes, he will naturally come up with good things.

(End of this chapter)