GU MOJIE LISTENED TO SEVERAL TECHNICAL BACKBONES OF HATSUNE INTELLIGENCE FOR A LONG TIME, AND FINALLY CONFIRMED THAT THE "CHUXIN 2" MOBILE PHONE CAN DEFINITELY SURPASS THE IPHONE THAT WILL ALSO BE LAUNCHED NEXT YEAR IN TERMS OF PICTURE QUALITY AND APPEARANCE. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

But with the confirmation of this positive confirmation, more problems and troubles have also been brought to the fore.

Zhang Tuohai cleared his throat, took out a set of loose machines with a screen display, a test motherboard and a test power supply, and demonstrated it to Gu Mojie.

"The indicator of a 5-inch, 367PPI screen was finalized in February this year - at that time, Samsung, LG and Sharp had not yet produced the 367PPI screen, and it only arrived for us in the middle of the year. Before that, we used the equivalent of low-resolution screens and dragged through other tests.

After this screen is set, the size of the whole machine with the 2nd generation machine is finalized. There is 5 inches of backplane space for fixed-size components such as CPU and baseband chips, cameras, and headsets, and the structural design is much more spacious than the first generation. Two-thirds of the space behind the whole machine can be vacated for batteries, and the thickness of the body is a little thinner than the first generation.

But at this time, we found a new problem: because the application of retina screens, the amount of data processing for pixel computing has skyrocketed several times, and the energy consumption of GPU video memory has also increased. In addition, the power consumption of the screen itself has also skyrocketed - when the screen is on at normal brightness, the current of the whole machine is 300mA, compared with only 140mA in the original 1st generation. ”

"The power consumption of the backlight of the 2nd generation machine is more than double that of the 1st generation? It's too high. Gu Mojie listened to it and felt that this parameter was a bit grim, "How big is the battery of the second generation now?" ”

"The top grid has been achieved to 2000mA, and if the attribute requirements of body thinning are abandoned, the battery can last up to 2400mA."

2400mA, it's just the end of "the new phone is fully charged with 100%, and the screen is on for 8 hours and there is no power", and it still can't escape the fate of "Android good men have to go home to charge every night".

"No! The energy consumption of the screen display is too high, and it is useless to rely on the stack of batteries alone. It is still necessary to treat the symptoms and cure the root cause, and reduce the energy consumption of the screen. Gu Mojie immediately made a judgment.

Zhang Tuohai signaled Gu Mojie not to be anxious: "This is what I want to say - in the past six months, our team has cooperated with Chen Gong to get a set of epoch-making new technologies to reduce the energy consumption of the screen backlight, and it is still in the patent secret period, and the submarine state is withdrawn every few months."

By the time the second generation of mobile phones is released, these patents will also enter the publication period, and then the joint registration of patent rights in various countries will be completed within the six-month priority period - except that the technologies I am talking about will be limited by some of the upper-level basic patents of LG, Samsung, or Sharp. ”

It turned out that I just talked about the meat.

"Go on." Gu Mojie is not talking nonsense.

"This is our exclusive invention, called 'LED and ambient light dual light guide side backlight', absolutely epoch-making." Zhang Tuohai said, took out a set of touch screen displays with strange transfer slots next to it, and put it in front of Gu Mojie.

"As we all know, IPS screen and touch screen, when they first appeared a few years ago, were the technology of Hitachi in Japan, using LCD LCD screen-LCD LCD screen backlight, which is placed behind the screen and irradiated upwards to light up the screen.

In recent years, the light efficiency of LEDs, a new light source, has been rising. In 08 years, the civilian light efficiency of LED reached 70lm/W, and this year it has been further improved to about 80lm/W, which has equaled the three primary color energy-saving lamps. In the field of lighting, many people in the industry say that this year is the first year of LED lighting technology, because its critical threshold of energy saving and high efficiency has been broken.

On the issue of display backlight, the maturity of LED technology has also brought two unexpected benefits.

First of all, it is natural that LEDs are more energy-efficient and have higher light efficiency than the traditional LCD screens.

Secondly, the LED light source can be used with a new panel material called 'light guide plate' for secondary light distribution, while the traditional LCD can only rely on the 'diffusion plate', which is a low-grade thing similar to organic plastics. ”

Zhang Tuohai said, took out samples of the two structures of LED screen and LCD screen, and demonstrated it for Gu Mojie to compare.

Obviously, the LCD screen is about 2 millimeters thicker than the LED screen - the thickness is on the light source that is laid behind the screen. The light source of the LED screen is irradiated along the screen profile from both sides to the middle.

Later generations of home TVs, LED era TVs are thinner than LCD era TVs, the former is only two or three centimeters thick, and the latter is at least four or five centimeters. The gap in this is mainly caused by the structural coupling of the backlight and the screen display.

Gu Mojie played with it for a while, and asked uncertainly: "However, it seems that this only makes the machine thinner, and the effect on energy saving is also obvious?" ”

"Obviously, the current use of LED screen can improve the light efficiency of about 15% compared with LCD screen, but considering that the loss of the first generation of light guide plate itself is lower than that of the already mature LCD diffusion plate, the comprehensive energy consumption is only reduced by 10%.

However, we should see the trend of the future - after the rise of LED lighting, the progress of light guide plate materials is changing with each passing day, today we get the light guide plate, transmission and soft light efficiency may be 5% lower than LCD diffusion plate, half a year later, when our 'Chuxin 2' finalized mass production, maybe there will be a new generation of materials can be used.

In fact, the same is true for the light source part, the light efficiency of LED has been rising by 10~20% every year in recent years, and it is estimated that the next three or four years will be a period of rapid growth. By 2012, the highest-end civilian backlight LED light efficiency may exceed 120lm, and by 2015, it may be 140lm. ”

Gu Mojie confirmed: "So, are you betting on the future?" ”

Zhang Tuohai made no secret of this: "Yes. A highly original mobile phone may require a year and a half of research and development cycle. In this regard, Apple actually has a conservative misunderstanding, that is, they only use the best materials they can buy when they are finalized. And we are more risky than them, willing to use materials that only exist in the laboratory when the project is established. ”

Don't bet on the future, how to overtake in corners?

Since it is to catch up with the international advanced level, of course, we must have the courage to take the ordinary road.

"Okay, I'm going to bet on you! Count it out for me. Gu Mojie generously chose to trust his technical talents.

"Thank you, and after using the LED screen, there is another benefit - because the position of the light source has been changed from the back of the screen to the upper and lower profile of the screen, we have come up with a measure to supplement the light with natural light and ambient light guides, specifically."

Zhang Tuohai said, taking out the last set of test samples, which is also the final test.

Compared with the second set of LED screen displays, this thing is even more funny.

The second set of LED screen displays, or there is an LED light source strip on both sides; In the last set of samples, only the bottom side has an LED light source strip, but it can be seen that the power per unit size has increased.

The edge that is vacated in the section of the screen is covered by some strange "curvature fiber" material.

"Since we use the side-lit light guide plate as the light diffusion medium, we can use our imagination even more: the light guide plate can not only guide the light of the LED, but also guide other lights, such as sunlight, such as indoor lights.

I know what you're trying to say -- if you want to ask me, 'Are you going to make this phone a solar-charging phone?' -- that's only half right. The exact answer is that we do intend to use solar energy, but not stupidly generate electricity from the sun and then use electricity to produce light.

The two conversions of optical-electrical and electrical-optical are directly omitted, and more than half of the additional losses are eliminated. We add a light guide about half a centimeter wide above the mobile phone screen, and use a curvature optical fiber to turn the incident light and shoot it sideways into the edge of the light guide plate. Then add a tiny illuminance sensor to the front camera position at the top of the phone, and use this illuminance sensor to sense the intensity of ambient light and adjust the overall brightness of the screen.

And if this system is finally perfected, we only need to let the mobile phone usually be in the 'night mode' backlight power, the light and darkness of the day mode are completely intelligently controlled, and the main part of the difference is borne by the light guide. ”

Very nice design.

Zhang Tuohai's demonstration made Gu Mojie's eyes shine.

The power consumption of the backlight has been greatly reduced, and the eye-protection technology of "intelligent backlight" has been made by mistake.

In the mobile phone market in 08~10 years, BREW machines and the first generation of Android and Apple machines have been widely complained about a problem: in the outdoor environment during the day, the mobile phone screen is too dark, and it is impossible to see the content on it clearly.

Of course, mobile phones in previous times also had these problems, but before entering the era of smart phones, there were not so many applications, and mobile phone users did not have to stare at the mobile phone screen for hours every day in different bright and dark environments.

To solve this problem, many high-end mobile phones choose to leave more margin on the hardware and increase the maximum power of the backlight. Ensure that the phone in its brightest state can be used clearly outdoors in all environments that are not exposed to direct sunlight.

(When the sun shines directly, God can't save it, it's incomprehensible.) Direct sunlight can reach hundreds of thousands of lux, while the lighting design of daily offices and classrooms is only 300~500lux. If you really design the backlight of the phone so that it can be seen in direct sunlight, not only will the phone burn out, but your eyes will also be blind quickly. ）

The cost of this not only increases redundant hardware, but also aggravates the problems of power consumption and heating.

With the use of light guide technology, everything is perfect.

The LED light strip first omits half of the side, and the empty upper half is changed to a light guide device, which directly moves the harmful light by 90 °, and then shines on the side of the light guide plate.

It's as gorgeous as Gusu Murong's "repaying the other with the other": the stronger the enemy, the stronger I am, the brighter the ambient light, and the brighter the supplementary backlight that comes with dry food and does not consume electricity.

Zhang Tuohai's comparative experiment report shows that after using the light guide and supplemental light technology and realizing the intelligent backlight, the peak current of the backlight is reduced to 200mA, and more importantly, most of the time, the 200mA will not be full, but in a low-power state. On average, it can even be slightly lower than the 4.2-inch non-retina screen of the year.

The number of pixels on the screen is 4 times that of the previous generation. The average energy consumption is lower than that of the previous generation.

Could there be a more fantastic outcome?

"Then why don't you hurry up and put all this series of patented technologies into production?"

"Mr. Gu, calm down a little - now, we are going to use the LED side light source technology, and even the next generation of OLED side light source technology, translucent matrix light guide plate material...... These patents are held by LG, Samsung and Sharp.

If we rashly announce our subordinate technology, how can we continue to develop if these three companies join forces and do not give us follow-up authorization in the future? Could it be that this kind of technology, just on the second generation of the original heart, with a round and a hammer deal, will not develop in the future? ”

Zhang Tuohai's words calmed Gu Mojie a little calmer.

The problem goes back to square one.

Hatsune Intelligence has made these subordinate invention patents today, and their upstream necks are still stuck.

Without at least one unimpeded technical route, no one dares to let go of this matter.

Which breakthrough should I choose? LG？ Samsung? Or Sharp? It seems that there are only three options on the planet right now. (To be continued.) )