Coquettish Rebirth

"By the way, Le has been mass-produced in Japan now? I heard that Huaxia Hi-Tech has acquired many Japanese production lines? How about it, have you acquired Le's production line?" Olson asked curiously.

"I bought one, but I don't know if I don't buy it. I really don't think it's worth it after buying it..." Who knows that Jia Hongjian sighed and shook his head at this time. "What's wrong?" the old man asked curiously. "Le, we originally purchased it for the white le developed by Nichia in 96, but we thought they had invented some kind of magical compound that would emit white light after electrification, but we didn't know until we bought it. , They f*ckingly moved their hands and feet - they covered the blu-ray le-emitting gallium nitride with a layer of light yellow phosphor coating, that is, cerium-doped yttrium aluminum garnet powder, dog day little Japan It is not a pure white le, but a pair of complementary colors of blue and yellow to complete the three primary colors, and then synthesize white! Because in the color spectrum, yellow is composed of red, green and blue, The combination of red and green can produce yellow, so if yellow and blue are mixed together, as long as they are properly mixed, it is white..." Speaking of this, Jia Hongjian was really full of tears!

Sincere!Originally, he listened to Ni Guangnan's science popularization, saying that it was in the light-emitting diodes, which were all kinds of strange chemical substances were put in for testing. Different things emit different lights after being energized. It's like different things. The colors of the flames that burn in the east are different.Before that, no white light was found anywhere in the world, what compound was used to produce white light, and even the blue-emitting compound was discovered very late-it was not until the 90s that potassium oxide, that is, gn, came out. stuff.At that time, people were very excited, because they had already found the lights of the three primary colors of rgb, and theoretically, they could make colored backlight le!But the more appropriate method is obviously to use a single white LE light as the backlight!

After all, no matter how small the LED light is, it is still visible to the human eye, and the RGB three-color lights are mixed together to form white.This is not a small difficulty. Although the display effect may be better, the cost will also increase-even if you don’t talk about the complicated method of mixing the lights of three lights into one white light, in terms of manufacturing cost alone, a white light It's cheaper than three colored lights!

And in 96, after the Japanese announced the invention of white le, the whole world was very excited!Because this shows that the le product is theoretically ready to be used as a backlight for a liquid crystal display!Next, we only need to wait for the production volume of white le to increase and the price will drop.Then you can enter the large-scale industrial production, and then enter thousands of households! [

So after listening to what Old Ni said, Jia Hongjian would of course think that the Japanese were very good at discovering a single compound that had never been tested in the world and it was electrified to emit white light. It turned out to be lazy and synthesized with blue and yellow!Nima knew this a long time ago, then the Chinese can also develop it!The great thing is to apply all three compounds of red, green and blue together!this method.That's really like the practice of domestic local turtle cottage manufacturers - there is no technical content, just to cut costs and take shortcuts!

"Then, for our second-generation product, why not make it with LE backlight?" The old man Olsen, a technical madman, became interested when he heard that Jia Hongjian and the others had the production capacity of white LE. "Forget it, the production cost is still relatively high now..." Who knew that Jia Hongjian shook his head and said, "It will take another ten years before we can really reduce the cost and enter thousands of households. Now it’s just spending money to support the production line and buy technical materials for follow-up research. This thing can’t make much money. And if le is used as a backlight, it’s too blind..."

"Le blind?" The old man was puzzled for a moment, but soon he understood Jia Hongjian's meaning, "Oh, you mean that Le has no afterglow, right? That's true, if Le doesn't have a decisive low cost, otherwise It’s better to use fl, the performance is good and the price is low, and it’s really uneconomical to use le.”

"Well, that's what it means." Jia Hongjian nodded.He is now discussing with the old man how to design the second-generation all-in-one product.Although it is said that the first generation of products has not yet started to appear on the market.It seems a bit early to start thinking about the second generation, so why not use it to modify the first generation.However, this first-generation product has already been put into production after all.If it is revised now, it is certain that the capital invested before will be basically wasted. No matter how much face Guo Taiming gives, he will not suffer losses because of Jia Hongjian and his own reasons, right?Those circuit boards, shells and so on that have been manufactured have to be returned to the furnace and remade. All of this requires money, time and manpower!Moreover, after Guo Taiming and the others re-soldered the circuit board, it is estimated that the all-in-one machine of ms has a high temperature, but it should not break down. At least it should be safe and stable for 3 years without large-scale quality problems. No problem.

Therefore, under such circumstances, it is better to start thinking about what the next generation of products will be.At this time, Olson thought the same way, "By the way, the temperature of our all-in-one product is a bit high. According to the progress of Intel and m, it is estimated that their new pu will generate a little more heat in a year. According to my experience in the industry According to the gossip from acquaintances, the two sides are already trying their best to hit 1g Hz, let’s see who gets there first. In this case, the heat generation of PU will obviously increase all the way in the future. And the Nvidia you bought, look It looks like I’m going to pile up materials on the display card. It’s estimated that this thing will also be a heat source in the future. The heat dissipation inside this all-in-one machine is really a big problem... Noise, heat dissipation, and even the accompanying dust are really contradictory. ..."

Yes, what the old man said is a big problem in the computer world.Whether it is a desktop or a notebook of later generations, there is this problem-do you need to dissipate heat?Then it's better to have holes, that is, make the case all holes, and then install as many fans as you can, and then make it into an air duct, so that as much air can be circulated as possible to remove heat.But such a hole flow and multiple fans will bring two problems, one is noise, and the other is dust!

It is easy to understand that the tunnel flow brings dust, especially in the environment of Tianchao, but what about the noise?For example, a 12 cm long and wide cooling fan, if there is a certain manufacturing cost.For example, it is about 5 dollars, that is, the price of a high-end fan in the market is about 10 dollars, 7080 RMB. This fan usually has a noise of about 10-15 decibels, and it is still one!Of course, 15 decibels may be the sound at full speed, what if there are four?Is this about to become 60 decibels?You must know that on the streets of Tianchao, the noise of cars coming and going in the afternoon is about 60 decibels!

Although it is possible that the fan is placed in the case.But the sound insulation is not much better - sound insulation is good unless it is wrapped!Wrapped and not good for heat dissipation!Therefore, if you want to have a good heat dissipation effect, you may have to face the sound of fans in your ears like cars coming and going, and you will have to clean the chassis once a month!But this all-in-one machine can't let consumers move the machine to a professional repair shop for cleaning within a month, right?This is too cheating!But it is impossible for Jia Hongjian and the others to allow consumers to disassemble and sweep it by themselves!Otherwise, what is the warranty if it is broken?

If it is put into later generations, what PU is 3G fast 4G, then Jia Hongjian thinks that it should be water-cooled.That is, through the water flow to directly cool the pu or something.This is common in high-end machines in later generations, and if it is water-cooled, it must be much quieter than the fan, and it can also be very dust-proof—anyway, the water pump and the like do not need ventilation, and most of the chassis is directly wrapped with sound-absorbing cotton. Living is not a problem!

But in this day and age, the pu speed is not enough, and the heat is not terrible. It is just a bunch of things mixed together to make the temperature rise, and the rise is not as horrible as in the later generations-the high-end pu of the later generations is always fully loaded at 90 degrees.This is still 90 degrees in the case of wind and cold!These days, the temperature inside the whole machine is [-] to [-] degrees, which is amazing!In later generations, this temperature is what Stone is used to, but this era is even more terrifying!

After much deliberation, Jia Hongjian still needs to design the air duct properly, or adopt air cooling.But try to pass through some relatively curved or messy air inlets, so as to keep the noise as low as possible and reduce dust—even, you can cover the air inlets with a layer of dust-proof cotton!But in this way, the requirements for the fan can be high!after all.It's like a cheaper fan in later generations.Those are those with relatively large air volume and relatively low wind pressure...

What is the difference between wind volume and wind pressure?In simple terms.It is equivalent to an electric fan. If an electric fan stands in front of the fan, the wind will be extremely strong, but standing two meters away will not feel any wind. This means that the air volume is large but the wind pressure is low!The fan with high wind pressure can make the wind "stressed" and then spread to farther places, that is to say, it can blow farther, or it can overcome obstacles better!

Therefore, if there is a relatively dense gauze blocking the air inlet, if it is placed on an electric fan, the gauze covers the entire back of the fan, then the fan with a large air volume but low air pressure will not be able to suck any wind!So there is no wind coming out!A fan with a high wind pressure can absorb a relatively large amount of wind through the gauze at this time, and then blow it out!

However, these days, because the heat generated by components such as pus is not large, so overclocking three, what is the cold master, and other computer cooling equipment manufacturers have not yet been established. Manufacturers of industrial blowers or manufacturers of exhaust fans and electric fans have hired some technical talents to form their own professional heat dissipation research team.

Just when Jia Hongjian thought of this, he suddenly heard a knock on the door of the old man's house. The old man stopped eating and was about to open the door, but his old lady waved her hand and asked the old man to continue to follow. Jia Hongjian chatted, and she went to open the door.Then, after a while, I heard the voice of the old lady talking to an old man at the gate, and then the old lady laughed... Well, it seems that an acquaintance came to visit? (To be continued. If you like this work, you are welcome to vote, monthly pass, your support is my biggest motivation. Mobile phone users, please go to m to read.)