Meanwhile.

Richard took the sand and entered the Garden of Eden.

Walk into the main laboratory, pour the sand into a funnel-shaped container, and start cleaning, screening, filtering, and finally get qualified pure sand after a lot of processes.

The pure sand is transferred to another cylindrical container, mixed with a large amount of coke, placed in a special furnace and heated.

During the heating process, the sand made a sound, and Richard knew that it was the composition of the sand, silica (SiO2), which reacted with the composition of coke, carbon (C), and finally produced metallurgical grade crude silicon (Si) with a coarse thickness of about 98%.

After heating, Richard got enough crude silicon, and without hesitation, he quickly began the second step of processing. The specific operation is to chlorinate with hydrochloric acid, and then distill, step by step to produce high-purity polysilicon. According to the standard, the high-purity polysilicon produced has a purity of 99.9999999999% - a total of 11 nines - which is a hard requirement, if it is not met, the product produced afterwards is likely to have certain defects.

After this step was carried out, and after passing the test, Richard did not stop, and began to put the polysilicon into a special container, which melted into a high-temperature liquid under the effect of high temperatures.

After successful melting, a small grain of silicon crystal silicon is placed in the liquid, and this silicon crystal silicon seed is used as an attachment to let the liquid form little by little at the bottom. When the inserted and tied silicon crystal silicon seed is slowly pulled out, a round bar is formed under the silicon crystal silicon seed. This is a monocrystalline silicon rod, also known as a "long crystal", and you can see that the long crystal is a standard cylinder with the same radius as the silicon crystal silicon that was originally inserted.

At this point, the negative of the chip has completed the production stage, and the next stage is the processing stage.

Putting away the monocrystalline silicon rods he had made, Richard walked quickly out of the main laboratory, went to the machining sector, and then entered the research room.

In the laboratory, Richard put the monocrystalline silicon rod on the processing table, kept it upright, adjusted the robotic arm to move down, and began to make precise cuts.

"Brush!"

When the mechanical arm waved, I saw that the monocrystalline silicon rod was immediately cut off a layer, and the cut part was just a thin disc with a diameter of more than ten centimeters.

The disc is finely polished and polished, and the surface of the disc is extremely bright, like a mirror, and it has become a qualified wafer - silicon wafer, which is the most basic raw material in the integrated circuit industry.

After the wafer is cut according to a certain specification, it is the original state of the chip, which is the so-called negative.

At this point, the negative is finished.

......

Once the negatives are made, the photoresist and developer need to be addressed.

Photoresist is a liquid applied to the negative, which will produce special changes after being irradiated with special light, and then immersed in the developer and undergo a special reaction to obtain the pattern on the mask.

Generally speaking, there are two main types of photoresists – positive photoresists, and negative photoresists.

Positive photoresist is a photochemical reaction in which the exposed part is dissolved in the developer, and the unexposed part is insoluble in the developer, which is still retained on the substrate, and the final pattern formed on the substrate is the same as the pattern on the mask.

Negative photoresist is the exposed part is insoluble in the developer due to cross-linking curing, and the unexposed part is dissolved in the developer, and the final pattern formed on the substrate is exactly the opposite of the pattern on the mask.

After some consideration, Richard decided to use positive photoresist, which would be easier to make later.

In this way, Richard began the work of configuring chemical reagents.

After that, he was busy for several days, constantly going in and out of the three-story wooden building, and Maas, who was on guard, constantly reported what he observed to the wizard Wan An.

......

A few days later.

In a two-story wooden building.

After listening to Maas's report again, Wan An frowned deeply, and was very puzzled: "Before, he was looking for the blood of demonized creatures and the juice of plants, and he could barely understand, but what do you want to do today when he is looking for the ore called 'Montauk Stone'?"

Because Maas had been outside for a long time, he was grumbling with hunger at this time, standing in the corner and stuffing dried fish, pumpkin pie and other things into his mouth, while shaking his head and responding: "I don't know the teacher, let's chirp, anyway, from the beginning I thought that guy was weird, and I didn't know what to do at all, so I didn't know what to do, ......."

Wan An couldn't help but feel bad, and when he heard the sound of Mas eating and chirping, he was even more bored, and suddenly turned his head to look at Maas, and ordered: "Don't stay here, you go out for me and continue to keep an eye on it, and you must not let go of any of his actions." ”

"But......" Maas hesitated, "Teacher, can I finish my meal and go again, I haven't eaten anything in days." ”

"Huh?!" Wan An's eyebrows furrowed, and his expression became a little dangerous.

"I!" Mas grunted, swallowing his food, not daring to talk any more, kicking the dried fish, pumpkin pie and the like into his arms, and running out of the door in a bit of embarrassment.

After running out of the door, Maas took a pumpkin pie into his mouth and bit it hard, looking a little hideous, but after swallowing the pumpkin pie with a "coo", it returned to normal. He looked at the wooden building behind him, exhaled, and walked towards the corner of the gathering place.

......

Inside the Garden of Eden.

Main laboratory.

The two liquids of photoresist and developer were mixed in the container, and Richard carefully observed the reaction and nodded with satisfaction: "It seems that both liquids can play a corresponding role." Then, apart from the light source, there is only the mask that needs to be solved. However, masking can be a big job. ”

Well, big job.

The function of the mask is to block the light from the light source, so that a specific light hits the negative coated with photoresist, creating a specific shape.

The shape on the mask is the shape on the chip.

Therefore, it is necessary to depict all the magic patterns in the design of the "Gauntlet of the Destruction of the World" on the mask.

"Crackling!"

Richard moved his body, let out a series of bone noises, and then walked out the door and into the machining sector.

In the machining sector laboratory, Richard found the prepared metal sheet and cut it into 10 cm square specifications on the processing table. Then adjust the robotic arm, put on microscopic glasses, adjust the focal length, and trace the lines on the metal sheet.

Depicting for a long time, occasionally stopping, thinking for a while, and continuing to depict.

"Rustling ......"

In the research room of the machining sector, only the sound of metal cutting echoes, and it is extremely quiet......

Richard was in this quiet, meticulously and constantly working......

One minute, two minutes, three minutes......

Ten minutes, twenty minutes, thirty minutes......

One hour, two hours, three hours......