Shenhao Black Technology Network Developer

Chapter 168 170. CMOS photosensitive sensor backlight technology (below)

“Now rice?” Lisa is not too familiar with the language of China, not to mention that Lei Luo is talking about their native dialect in Chuzhou. Only if she can understand it, there will be ghosts!

“Cooking rice is our native dialect, it is the leftover rice that others have eaten. Fried rice is doing what others have already done,” Lei Luo explained with a smile.

“Oh? I would like to hear the details,” Lisa asked curiously.

The CMOS sensor chip is actually a very new technology. It hasn’t been long since it came out, but the technology is stable and there is no room for optimization. Lisa will not go to “fry rice”!

“CMOS image sensor includes photosensitive area array, timing control, analog signal processing and analog-to-digital conversion modules,” Lei Luo began to analyze the current CMOS image sensor.

“One of the most important is the photosensitive area array. Now all the photosensitive area arrays of CMOS image sensors adopt front-lighting technology.”

“The light enters the metal area after passing through the micro lens and the color filter, then reaches the light receiving surface, and is transmitted to the photodiode”

“The biggest problem with front-lighting technology is that the light will be affected by the metal wire, and the signal noise will naturally not be too low,” Lei Luo continued to explain.

“There is indeed such a problem,” Lisa tilted her head for a moment and said.

Front-lighting technology was a very advanced technology in 1999, but from the perspective of later generations, it was simply a design for mental retardation.

This mentally handicapped design was not discovered and corrected until 2003.

“Do you have a solution?” Lisa looked at Lei Luo with a smile, really wanted to go up and kick her, she always likes to stop in the middle, so upset!

“My solution is back-illumination technology”, Lei Luo stopped teasing this little blond beauty.

“Put the photodiode on the back of the metal so that the light will not be affected by the metal wire.” Seeing that Lisa was still a little confused, Lei Luo continued to explain.

“After using the backlight technology, the pixels will definitely go up. Then the mega-pixel limit of the current digital camera will be easily surpassed.” Lisa is also a mid-level expert and can see through.

Lei Luo raised his glass of red wine and touched the glass in front of Lisa. Lisa also raised the glass with pleasure and drank it in one gulp.

“But it’s just the pixels that go up without a matching high-speed reading and processing circuit, that won’t work?” Lisa thought for a long time, and said in confusion.

“Therefore, the sensor architecture has to be changed,” Lei Luo said admiringly. This Lisa is indeed the daughter of Qiao Busi. This IQ absolutely kills most people.

“Quickly talk about it, how to change?” Lisa’s interest has been completely aroused, and she asked eagerly.

“Now in all architectures in the world, there is only one ADC analog-to-digital converter, and the pixel processing speed is certainly not enough,” Lei Luo said with a smile.

“You mean, you want to match each pixel with its own ADC?” Lisa exclaimed for this genius’s idea.

“Why not?” Lei Luo raised his glass to Lisa again.

“You~” Lisa was overwhelmed by Lei Luo’s talents, but she was dissatisfied with his condescending teaching elementary school students. She loved and hated him, but she was helpless!

“Don’t grind, you have drunk this glass of wine for an hour, hurry up”, Lei Luo directly picked up Lisa’s glass and handed it to her mouth.

“Cheers”, Lei Luo raised his glass and drank it all in one go.

“Cheers”, Lisa was still immersed in the thoughts of Lei Luo’s genius, she had to toast and drank in one shot.

While drinking, Lei Luo hurriedly applied for a patent for the back-illumination technology of the CMOS sensor chip in the computer in the space warehouse, and used the accelerator of the system, which immediately took effect on the patent websites of countries around the world.

Then, Lei Luo asked the waiter for paper and pen. The two sat side by side and began to roughly draw the chip circuit diagram.

Just now Lei Luo just proposed a rough idea, and now the two of them are going to transform this idea into a rough design.

Of course, this design is very rough, just to ensure that Lei Luo’s ideas, Lisa will not be misunderstood.

The specific and detailed chip circuit design must be completed by Lisa with the help of EDA software.

Lei Luo has just started to focus entirely on design and explanation, and he hasn’t felt anything unusual yet.

When I was a little idle at this time, I felt extremely suffering.

As the two were close to each other, the fragrance on Lisa’s body came to her from time to time.

The ears and temples are rubbed together, the skin touches, what’s more, Lei Luo has already had several women now.

However, Lisa was completely immersed in technical discussions without realizing it, making Lei Luo even more uncomfortable!

After the design was finalized, the two began to determine the follow-up plan!

1. Chip architecture selection. This time I still use the RISC-V5 architecture of the last mp3 chip. This time you can save a lot of time, because Lisa is already very familiar with this architecture in the last project…

2. Chip design can be completed in EDA software…

3. The simulation test can be completed in the EDA software…

4. Tape out, this time I still choose Taiji Power, prepare at least 5 million meters of gold, if it fails, there may be more…

5. The actual chip test requires related test equipment, but there is already in the mp3 project before, this time it can be reused directly to save costs…

6. In the actual test on the digital camera, Lei Luo needs to coordinate the related equipment in advance…

7. Final completion time…

None of the above-mentioned processes can be accomplished overnight, nor is it possible to complete them all at once, so there may be multiple iterations.

But Lei Luo used a systematic accelerator for this matter, so that all the processes can definitely be done in one go.

After the project plan was determined, Lei Luo called Wu Ying on the spot to talk about the CMOS sensor chip back-illumination technology, and asked her to cooperate with Lisa in chip design, development and testing.

Of course Wu Ying promised, he already knew about the previous mp3 project, which was worth hundreds of billions of dollars, and it was counted in the UST company!

He is also very optimistic about this project, so he is more proactive and full of enthusiasm!

After Lisa and Lei Luo finished discussing, they eagerly started the development work.

“Lei Dong”, Zou Haimei saw Lisa leaving behind in excitement, and sat down at the right time.

“How about? How about the resources recently?” Lei Luo walked away in no hurry, and asked about Zou Haimei.

“Thanks to Lei Dong’s care, now it’s the second female who has taken a few films,” Zou Haimei said with a smile.

“That’s pretty good, take a good shot, I also have a few scripts in my hand, I can take you with me when that time comes”, Lei Luo is in a good mood today.

If mp3 is a 100-billion-meter gold market, then the CMOS image sensor back-illumination technology just now is also a 100-billion-meter gold market, and it is even worse.

Regardless of whether it is mp3 or CMOS image sensor back-illumination technology, it will eventually converge on one product: that is smart phones, which is a broader market, and hundreds of billions of meters are too small! ! !

However, this is the next step. The development of smart phones is not only a question of mobile phone chips, but also basic network construction.

Now that 3G China has not yet been launched, I just want to use smart phones. Does it make sense?

I can’t eat hot tofu if I am impatient.

~~Dear book friends, please recommend and give a reward. I would like to thank the old lion~~