363 Chapter 355 LCD Sample

September 1991

Leningrad decided to revert to the old name St. Petersburg through a vote in the city.

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8 pm

Photoelectric laboratory on the fourth floor of the electronics building

Since the LED laboratory and production line moved away, this once noisy laboratory has gradually quieted down.

But these days, the laboratory is lively again, and even at night, it is still brightly lit.Especially today, the room is full of laughter.

"This is the LCD monitor you are talking about? Is it so easy to make?"

A young man with pimples fiddled with a row of small switches on the desktop from time to time.With his fingers, a small glass plate on the table kept changing colors, red, green, blue, blue, yellow, and white.

"What's easy, you didn't look at us, you have been busy for more than two months!"

Yan Liang took the control switch and snatched it back from You Tian.This is a sample of TFT-LCD, made by hand, small size, low resolution.But although the sparrow is small and has all five internal organs, all the processes that should be passed have been walked through in the laboratory.

"What's two months? You don't know, my last project took a semester before it was finished."

In the past year, Youtian has been spinning around in fiber inspection.He has a specialization in the field of art, and in the past year, he has published two more papers, which is also quite rewarding.

With the passage of time, with the joint participation of scientific researchers from all over the world, optical fiber inspection has made rapid progress. Both theoretical models and ideological systems have quickly matured.

From the perspective of a discipline, this is certainly a good thing.But for scientific researchers, it's another matter.

The subject matter related to optical fiber inspection has been exhausted, and the chance of meeting a good subject and writing a good paper is getting slimmer.

Even Youtian, who is famous for his tense character, has the mind to give up.There is really nothing you can do.No matter what you think about it now, when you check the information, either someone is doing it, or someone has done it.

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"How? This thing is interesting, there is nothing on your side anyway, come over and help if you have time."

On a test bench next to him, Cheng Yongxing put down the soldering iron in his hand and turned his body around.You Tian was called by him.

"Really? How can I help?"

"There's a lot of help, as you can see, there is a shortage of manpower here. Right now, the two of us are working on it."

Yan Liang also persuaded again.Cheng Yongxing still has company affairs.Most of the time, he and Ye Jing are the only people here.This laboratory often appears extremely empty.

"By the way, when I came in, it was strange. Why are there so few people? Didn't your Boy Scouts expand their enrollment?"

Boy Scouts are now well-known.As a scientific research organization with undergraduate students as the main body, it has become a banner for students to engage in scientific research.Journalists from different sources often come to interview.

In this group, not only students from the 89-level testing department are participating.Some foreign departments, as well as students in lower grades, are also slowly flooding them.

Although this group of students can't actually do much, they can only do some statistical work, but it is a very good news material that is very popular with organizations at all levels.Whenever a leader comes to visit, the Boy Scouts is a key project to introduce.

"This is another thing I want to tell you. This is a confidential project. Don't talk about everything you see here. If you can't do this, then I dare not keep you."

Cheng Yongxing simply put down his work and walked over.The LCD project is short of manpower, but it is not ordinary people, but credible people.

"This is no problem. Besides, no one asked me!"

You Tian is a relatively lonely person. Because he ran with the optical fiber laboratory, he was alienated from his classmates.

"By the way, why is the project called Project Zero?"

"Isn't zero the starting point for everything?"

"How is 0 the starting point? 1 is it!"

Several people retorted in unison.Zero is the starting point, and there is only one kind of person who sees that.Such people do not yet exist.

But this reminds Cheng Yongxing.Need a name that everyone can understand.

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Several people talked and laughed for a while, and then returned to the current experiment.

"What's next?"

Ye Jing hadn't spoken just now, she and You Tian were not very familiar.Most of the boys in the Boy Scouts are boys, and as the only remaining girl, she is the only alternative.

"That's it for this stage. The next step is to turn to technology and equipment. Principle verification, these tasks are sufficient."

Cheng Yongxing expressed satisfaction with the current results.

"Really? That's the end? Is it all just showing monochrome?"

Several people in the room were surprised by the result.Everyone is a person who has experienced large LED screens.Although this small sample is small and has low resolution, how can it be connected to a signal generator to display a pattern or something?

"If the LCD wants to display patterns, it needs an external dedicated drive chip and drive circuit. I don't have this kind of chip, so I had to do this."

Cheng Yongxing explained to several companions.LCD and LED large screen are different.The driving chip and circuit of the large LED screen can be connected in a traditional way.It has no size limit, just drop in with money.

The driver chip provided by Beauty Corps can drive module-level LEDs, which is a great improvement.

Each LED module has a few chips and the circuit is much simplified compared to the previous separate circuit.But as many LED modules as there are, at least as many chips are needed.For example, a large LED screen with standard resolution requires 40x30, a total of 1200 modules.

More than a thousand chips cannot be squeezed into the LCD module by any means.LCD dedicated driver chip has become a hurdle that cannot be bypassed.

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"The driving circuit? Isn't this the problem of Senior Sister Luo? Go find him!"

The cafeteria itself is a public place, and many people have seen that special scene.Everyone is waiting to see the excitement.Especially the young people of the Boy Scouts, one is to join in the fun, the other is optimistic.

"No, this stage is just to verify the concept, no drive circuit is needed."

Luo Ningwei is a very strong person, and he has a kind of unstoppable energy to do things.

Cheng Yongxing did not know how to deal with this situation.Every time he encountered such a situation, he had no choice but to hide.He doesn't even dare to go to the cafeteria now.He picked up the cooking skills he hadn't practiced for a long time.

But whether it is a large LED screen or LCD, the auxiliary drive circuit is a barrier that cannot be bypassed.

"Then we are all right?"

Ye Jing was a little surprised.Last semester, Cheng Yongxing said a lot of things when summoning two people.What can’t be published anymore, what’s kept secret, and the result is over so soon.

"This is also our luck, and I did not expect that this stage will be so smooth."

In fact, this is normal. The difficulty of LCD lies in industrial production.Its concept was verified thirty years ago.

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"Why do I feel strange, as if you have done these experiments before?"

Yan Liang's feeling has long been there.The experimental steps involved in LCD, how can I say, are very strange steps.For example, orientation film coating, rubbing orientation, etc.

But Cheng Yongxing led the two people and did it step by step.

Although there have been repetitions during the experiment, everyone just keeps redoing, and these designed experimental steps have not been changed from beginning to end!

"Really? Then I know. You must have done something secretly again, just don't take it out. It's the same as a blue LED, right!"

Youtian is a big-hearted lord, dare to say anything.In the eyes of outsiders, the blue LED was made in the last few days.But among these familiar friends, they don't think so.

After such a long period of experience, everyone has long understood what LED is all about.The brightness of the LED may be increased slowly, but there is absolutely no reason to appear suddenly.Cheng Yongxing’s sample is 40mdb when he sells it.how can that be.It's just that his classmates gave him face and were unwilling to expose lies.

"Keep your voice down! Then you can't just talk nonsense."

Ye Jing quickly stopped the babble of acne.As the only remaining girl in the first generation of Boy Scouts, she has a high status in a small team.

"What do you look at me for?"

Cheng Yongxing found several people staring at him.

"Just pretend to us!"

Yan Liang has no intention of continuing this topic, but irony is indispensable.

The LCD sample in his hand is mainly the result of his battle with Ye Jing, so he also has a certain say.

Practice makes perfect. In the past six months, Cheng Yongxing has gradually lost his experience when he conducts experiments himself.Therefore, his test method is still weaker than Yan Liang and others who have not been distracted.

"That's it for today. We will take a two-day break. We will wait for my news for the next stage of work.

"Okay! I can finally rest!"

Ye Jing cheered a little.After entering the junior year, the pressure on the course eased a lot.The contents of the professional courses are completely a piece of cake for a student who has done experiments and projects for two years.

So she can devote more time to participate in the project.

But for several weeks, working until 10 o'clock every day, she was also a little tired.