Chapter 765 TN-LCD
Just after Tang Shaohui came over and reported on polycrystalline silicon solar cells, Gao Zhendong himself began to think about his recent work focus.
He approached the National Defense Working Committee and asked for a schedule of projects he had participated in or suggested.
Coincidentally, not long after the National Defense Working Committee had made a relevant summary report, the leader of the National Defense Working Committee heard that Gao Zhendong was concerned about this matter and immediately sent someone over to give him a verbal speech in front of Gao Zhendong. Explaining, holding a list, explaining each item in detail.
The reason why I did not send an email directly is mainly because although these things do not go into details, they can comprehensively reveal the development direction and global combat capabilities of the army at present and even over a long period of time. Compared with a specific Project progress and technology, this kind of information is more sensitive.
Anyway, Gao Zhendong just wants to understand a general situation and be aware of it. He does not want to fully participate in the specific work of each equipment. He also cannot have that time. Gao Zhendong’s good steel must be used. Go up to the key node where the problem is encountered.
So the National Defense Working Committee simply sent someone over to communicate face to face.
Looking at the items on the list one by one, Gao Zhendong was very satisfied. Any piece of equipment here did not exist at this point in the previous life. As long as these things develop as planned , I believe it can change a lot of things. And now, he wants to make some efforts in people's livelihood.
Sending away the comrades from the National Defense Working Committee, Gao Zhendong once again took aim at the information sent by Lou Shouxing, which was the information on the LCD monitor he bought from Citigroup.
This thing has nothing to do with our people's livelihood, but it can make other people's money to improve our people's livelihood and save the country. Gao Zhendong, who didn't know where to start for a while, decided to solve the matters at hand first. More importantly, he went back to the Defense Working Committee and asked them to help him find some relevant statistical information before considering it.
After getting this set of things back, Gao Zhendong was busy with various matters during the New Year, and Lou Xiao'e was happy, so he didn't have much time to look at this thing. Anyway, this thing is not particularly urgent.
After carefully looking at the situation of the LCD monitor, Gao Zhendong finally understood why RCA got up early to catch a late show and sold the patent. After all, there were many senior technicians in RCA. Maybe all of them are stupid.
Because judging from the current state, this thing is simply unusable.
The viewing angle is small, it cannot self-illuminate, it can only display in black and white, and it inherently has poor support for grayscale display, and a dithering algorithm is needed to optimize the realization of grayscale. RCA is not aware of this at this stage. The contrast cannot support multi-line display, and the effect of dozens of lines is very poor.
Moreover, the properties of the liquid crystal material used are unstable, and the display screen is also unstable. Not to mention the color and high resolution in the future, even the simple display on the calculator is a bit awkward. Feeling too reliable.
Looking at this thing, Gao Zhendong shook his head. No wonder they didn't come up with the first serious LCD screen until 1968 in the previous life, and it was still unstable. It was already 1973 that it could really support formal mass production and shipment. As for what happened in the middle, Gao Zhendong roughly knows.
He will solve this problem now.
After searching in the system, he really didn’t remember this thing, but he saved the relevant information.
Looking at the searched information, Gao Zhendong picked up the phone and called Xiang Gong, who was engaged in chemistry, again.
Gong Xiang was a little happy when he received a call from Gao Zhendong. Not long after I sent this book, could Chief Engineer Gao have produced results? I have to say that there is already a bit of superstition on Mr. Xiang's part.
"General Engineer Gao, do you want to confirm whether 4,4'-dioxybiphenyl can be synthesized now?"
Gao Zhendong was very sure on the phone: "Yes, it does not necessarily require a mature process. , Just make sure it can be synthesized. "
"I'm not doing this. If you do this, I'll send an email to my classmates and colleagues to ask about the situation. "Tell Electronics. Thanks to email, communication is much more efficient now.
Mr. Xiang kept his promise and called back that afternoon.
“I have a classmate who has occasionally synthesized it as an intermediate product, but it seems useless now and I have not studied it in depth. If you need it, I can ask him to synthesize part of it for you. How much do you need?” Can you help? When Gao Zhendong arrived, Mr. Xiang was in a very happy mood.
However, Gao Zhendong's answer left him a little confused: "Has it been synthesized? Great! It's not needed now. I just want to confirm whether this thing can be synthesized! Thank you, Mr. Xiang, if you need me I'll trouble you again." For him, it's just a matter of confirming that the technology is currently available, and no actual materials are needed for the time being.
After Gao Zhendong thanked him, he hung up the phone angrily.
With the exact news, Gao Zhendong picked up a pen, crossed out all the original liquid crystal materials in the liquid crystal material section of the technical information, and wrote a few words again.
"Liquid crystal material, use [4,4'-dioxybiphenyl (DOB)]."
This is the problem Gao Zhendong wants to solve, the simplest kind of liquid crystal display The structure is simple, and there is not much difficulty in production. The liquid crystal box, conductive glass substrate, etc. are all relatively simple things. The only problem is that it has been mainly stuck on one thing for so many years.
——Liquid crystal material.
From 1968 to 1973, the biggest thing that happened in the LCD industry was that Professor Gray of John Bull discovered that biphenyl was very useful in LCD displays. However, there are many kinds of biphenyl. After Gao Zhendong read the searched information, he chose DOB. This thing has an advantage. It has a high melting point and can be used in high-temperature LCD displays. It can handle both normal and high temperatures at once. Save yourself the trouble.
After making the selection, what he had to solve was the problem of its origin. Can this thing be synthesized now?
For him, this thing does not require a mature synthesis process. It is enough to prove that it can be synthesized, and leave the rest to the system.
Now that there is clear news, Gao Zhendong directly modified the relevant technical data of the existing LCD display.
Then, he opened the product page of the system and came across a very rare thing. After thinking about it, he found that only this thing could meet the requirements of "black and white, gray scale, flat panel, array" display.
He also tried to extract a calculator. After all, it has an LCD screen, but the result was not very good. He got an LED digital tube display, and C6108 was used as the core "calculator". It was about the same size. It’s almost the same size as the keyboard in my previous life, hey!
It seems that display equipment is required, and the choice of technology and features must be very clever. Color display screens or TVs are not acceptable. It’s not like I haven’t mentioned that thing before. Just get it out. A flat-screen CRT large-head TV.
So Gao Zhendong finally found this thing in the system. If it were not near the school, no one would probably sell this thing, at least it would basically not be found in the computer city.
It is a 13.3-inch black and white ink screen monitor. The ink screen is also called electronic paper. It is a very strange and niche product. It is usually used in readers. It is also suitable for a small number of people who have eye problems or want to protect their eyes as much as possible. Said, there are also monitor products available for purchase.
Most people will not buy this thing at all. It has slow response, slow refresh, residual images, black and white, and it is too expensive! Among consumer-grade monitors, this is the most expensive one with the same display area.
But although this thing is very magical, it meets Gao Zhendong's requirements very well.
6◇9◇Book◇Bar
Tablet, display device, black and white, dot matrix, and even grayscale display.
Gao Zhendong took this thing out, as expected.
In front of him was a thin plastic box. A gray 13.3-inch screen occupied most of the space on the front of the box. Some cable interfaces were on the side. In terms of display interfaces, the system was lazy again. , it is the display interface of DJS series computers developed by Gao Zhendong.
It is said to be thin, but it is actually thicker than the original ink screen monitor, but compared to the current large-head CRT, it can be said to be extremely thin and light.
Gao Zhendong was very happy. Hey, this time he had a good grasp of the system.
Get the LCD patent first to avoid making wedding dresses for others.
Then determine the best liquid crystal material and its preparation technology in the current environment. Anyway, for the system, what is important is whether it is available, not whether it is good or not.
As long as you have this technology, it can manifest it for you, and at the same time, it can also optimize it for you, which is very considerate.
When I identified the liquid crystal material as DOB that could be synthesized in the liquid crystal technology materials, the system was set.
He happily opened the manual, 8 levels of grayscale, 80*60 resolution...
What? 80*60? This damn guy can fuck a lot! At 13.3 inches, this is not even called resolution, it is simply a mosaic display.
Gao Zhendong read the manual carefully and found the problem.
Up to now, the technology he has has only supports TN (Twisted Nematic) liquid crystals. A big problem with twisted nematic is that it does not support multi-rows very well, and it is not impossible to do it. , the cost just goes up, and the effect is hard to describe.
So what the system finally produced was a TN LCD display.
After understanding the reason, Gao Zhendong felt relieved. This was not a big problem. Just TN. It’s not that it couldn’t be used. Anyway, in the technical environment of that year, I wanted to support video. The playback is still unrealistic. If it is mainly used for instruments, then there will be no problem. This thing consumes low power. Think about how long a button battery in an electronic watch can last, and you will know how power-saving this thing is.
As for the more advanced ones, just wait, they can always be solved.
Gao Zhendong is full of confidence in this.
(End of this chapter)