Huang Xiuyuan thought.

The unit storage capacity of Lilong 1 is 92G per square centimeter; Lilong 2 is 186G per square centimeter; Lilong 3 is still 184G per square centimeter, but there is an extra rewrite function.

If the storage capacity is reduced to 8G per square centimeter, it is necessary to apply it to the mobile phone to achieve ultra-large capacity storage, and the area required is quite large.

The size of Chengying mobile phone is 14 cm long, 6.8 cm wide, and an area of ​​95.2 square centimeters; while the size of Tai'a mobile phone is 15 cm long, 7 cm wide, and an area of ​​105 square centimeters.

If the entire area is made into a glass disc storage, 95.2 square centimeters can store 761.6G, and 105 square centimeters can store 840G.

It is just that the entire area is made into glass discs, which is obviously unrealistic.

Slow down

Huang Xiuyuan, who was about to say something, suddenly stopped because he remembered a piece of information in his future memory.

By 2035, human semiconductor storage technology, disk storage technology, and glass disc technology have entered a bottleneck period of development.

At this moment, a genius envisioned a nanodot storage technology that can achieve large-capacity storage, long-term storage, and low-cost production.

Logically speaking, Huang Xiuyuan should have a good understanding of this technology, but the fact is the opposite. Because this technology was born at the wrong time, it encountered another revolutionary data storage.

After that genius published the paper and conceptual products, two months later, another revolutionary product appeared directly on the market, instantly increasing the unit data storage capacity by thousands of times.

Therefore, the nanodot storage technology was evenly killed before it could be launched.

Huang Xiuyuan also met the genius at an internal symposium in 2052, and talked about this during a chat.

Afterwards, he also specifically checked those papers. If it weren't for the emergence of another revolutionary product, the nano-dot storage technology was indeed very powerful and could last a glass disc for a period of time.

Huang Xiuyuan calculated and found that this technology can also be done at this stage, that is, the storage capacity is not as powerful as the future.

"I have an idea, let's go to the design center and say it."

Hearing this sentence, Lu Xuedong, Zhang Weixin and Miao Guozhong were stunned at first, then Lu Xuedong asked with a smile: "Xiuyuan, what do you think?"

"You will know when you arrive at the design center."

"Then let's go!"

The group came to the design center of the semiconductor base.

Huang Xiuyuan found an industrial design computer and started operating it. Soon a three-dimensional graphic appeared on the industrial software platform.

Lu Xuedong was a little puzzled by the "multi-layer three-dimensional structure".

Miao Guozhong reminded: "Chairman, if this structure is adopted, there is no way to burn and read it."

Huang Xiuyuan, who was confident, turned the chair and smiled at everyone, saying, "You all know that the data points of glass discs are burned, read and erased through ultraviolet and infrared rays."

Lu Xuedong scratched his head and asked in confusion: "Well, is this related to the three-dimensional structure? The only relationship I can think of is that this situation will limit the development of glass discs to the three-dimensional structure."

"A little tip is our nanoscreen technology."

Nanoscreen technology

Light emitting diode

Nano-scale light emitting diodes! Lu Xuedong immediately reacted: "You plan to apply the light emitting diodes of nanoscreens to the storage technology of glass discs."

"Yes, this is my idea..." Huang Xiuyuan said, turning his chair and pointing to the three-dimensional structure on the industrial software platform to explain.

This design is to divide the glass memory into three layers, with a specially made data point glass layer in the middle; the upper layer is a deep ultraviolet diode, which is used to burn and erase data points in the glass layer; the lower layer is an infrared diode and a light wave sensor, which is used to excite infrared rays and allow the data points in the glass layer to reflect different light waves, achieving the purpose of data reading.

Since the data point glass layer, deep ultraviolet photodiode layer, infrared photodiode and light wave sensor are all nanometer-level thicknesses, plus the outer light shielding layer, the overall thickness will not exceed 300 nanometers.

In other words, this composite glass disc can be continuously stacked to increase the storage capacity.

Calculated from a layer of 300 nanometers, 3333 layers can be superimposed on a thickness of 1 mm. Even if the area per square centimeter can only be stored in 8G, with the support of 3333 layers, the storage capacity will be increased to more than 20 T. This is the advantage of the three-dimensional structure.

Miao Guozhong thought for a while and knew what the key to this technology was: "If this is the case, then there is a need for a diode that can emit ultraviolet and infrared light."

"There is no problem." Lu Xuedong is the head of the scientific research department. When he was developing nanoscreen technology before, the scientific research department tried a lot of materials and selected three light emitting diodes of three primary colors. In this process, other bands of light emitting diode materials were discovered.

Therefore, deep ultraviolet light and infrared light light light light have existing technologies.

Zhang Weixin said a concern: "Chairman, if this compound method is adopted, will it lead to too high costs?"

After all, high-precision nanoscreens can be very costly.

"The infrared photodiode does not require high precision, the cost is only a few dollars per square centimeter." Lu Xuedong continued: "The key point now is the cost of deep ultraviolet photodiodes."

The reason why infrared light diodes do not require too high accuracy is that the reader only needs to emit infrared light to irradiate the glass layer, and the light wave sensor does not require too high accuracy.

The burning of ultraviolet light requires high accuracy. Each ultraviolet light diode needs to correspond to a data point, which is not low.

Huang Xiuyuan smiled and said, "This problem is actually not impossible to solve. You have forgotten another feature of the data point."

Another feature Lu Xuedong was stunned: "Data points or what kind of feature"

"In infrared excitation state, since the data point is in an electronically active state, ultraviolet light will be suppressed from the modification of the data point state."

"This feature"

"It's interesting. If you change the irradiation lumens of each infrared light diode and combine the lumens of ultraviolet light, you can use low-precision ultraviolet light diodes to control data points within a certain range." Lu Xuedong said while turning on a computer and conducting preliminary simulation calculations on it.

Through simulation calculations, they obtained an optimal solution.

A single-layer composite storage layer of 24G per square centimeter is the best cost-effective, with a photo sensor of 3.7 yuan, an infrared diode layer of 5.4 yuan, a deep ultraviolet diode layer of 8.3 yuan, a data point glass layer of 2.2 yuan, and a light shielding layer of 0.1 yuan, totaling 19.7 yuan.

Compound 10 layers means 240G storage capacity and 197 yuan production cost.

This cost is already very low, and it can be used as a computer hard drive and mobile phone memory card. In fact, this design focuses on the market, namely laptops, tablets and mobile phones.

As for desktop computers, you can use this three-dimensional glass disc or old-fashioned glass discs. After all, the volume limits of desktop computers are not too strict.
Chapter completed!