"Today, let's disassemble Huawei's latest P40 Pro mobile phone;
First, we need to remove the SIM card. Because Huawei P40 Pro has IP68 waterproof and dustproof rubber ring, we found that there is a waterproof and dustproof rubber ring inside the SIM card.
After removing the SIM card holder, remove the bottom screw. Then heat it to 90 ℃ with a hot-air gun for 3 minutes, then suck the rear cover with a suction cup, and then slowly cut along the gap of the rear cover with a wire stripper to open the rear cover.
It should be noted that the machine supports IP68 waterproof and dustproof, and a large amount of glue is used inside, which requires great efforts in the process of removing the rear cover. The bottom right side of the back cover is a heat conducting graphite sheet, which corresponds to the position of the speaker in the mobile phone. In addition, there is a large buffer foam in the middle of the back cover.
In the upper right corner of the rear lid (i.e. the corresponding camera position), there is also a protective component for the rear camera module. After all, the composition of the rear camera module of P40 Pro is very high, and key protection is inevitable. Previously, Yu Chengdong disclosed that the cost of P40 rear camera module is more than $100. Obviously, the cost of P40 Pro rear camera module is higher. Then look at the internal layout of the fuselage. Compared with the previous generation of Huawei P30 pro, we can see that the internal layout of Huawei P40 Pro is similar to that of Huawei P40 pro, but the rear camera module occupies more space, and the motherboard, battery and lower daughter board space are further compressed.
Before removing the main board and camera module, remove the 11 fixing screws.
First, remove the front camera module. There is a layer of heat conducting graphite on the back of the front sensor and the infrared sensor, which is fixed with screws. After unscrewing the screws, the front camera and infrared can be taken out.
Then take out the periscope optical lens module. It can be seen that the volume of the periscope optical module is relatively large, and it is also equipped with a separate roll cage.
Next, take out three other rear cameras. You can see that the three cameras are fixed together.
In terms of specific parameters, the main camera is Sony's imx700 sensor, RYB photosensitive pixel arrangement, 50 million pixels, and the sensor area is 1 / 1.28 inch. It is the largest mobile phone lens sensor at present. It can obtain more than 40% optical input, the equivalent focal length is 27mm, and supports OIS optical anti jitter.
However, Huawei did not point out that in normal mode, the 50 megapixel main camera outputs 12.5 megapixel photos.
the other one. Ultra wide angle lens, 40 megapixels (four in one to 10 megapixels), Sony imx608 sensor, f / 1.8 aperture, equivalent focal length 18mm.
Huawei P40 Pro provides 12 megapixel periscope optical zoom lens. Sony imx351 sensor is used to realize 5x equivalent optical zoom, and the actual zoom is between 4.6x and 4.7x.
It should be noted that the previous industry chain news shows that the image sensors of Huawei P40 series telephoto lenses are provided by Howell technology acquired by will, but from the perspective of disassembly, at least Sony's P40 Pro telephoto CIS for disassembly.
Of course, this cannot be ruled out. Howell technology is also a supplier of P40 series telephoto CIS.
In addition, Sony imx316 sensor is used for front TOF camera and rear camera, and Sony imx616 sensor is used for front 32 megapixel camera, with F / 2.2 aperture and equivalent focal length of 26mm.
Obviously, judging from the P40 Pro disassembled by xyzone, Sony is undoubtedly the biggest winner in Huawei's P-Series image upgrade war.
In addition, after the motherboard is removed, we can see that the flashing light and color temperature sensor on the back are connected to the motherboard. It should be pointed out here that the sensor of the rear main camera adopts ryyb photosensitive pixel matrix, which may cause color deviation in photographing. For example, orange may turn red in photographing.
Therefore, Huawei has equipped P40 pro with an 8-channel color temperature sensor, which can theoretically make the captured color more accurate.
However, according to the latest photo evaluation of P40 Pro by foreign media, P40 Pro still has the problems of photographing and color deviation.
For example, by comparing the shooting effects of Huawei P40 pro and Samsung S20 ultra (shooting the night scene under street lights in 5x optical zoom and normal mode at the same time), we can see that the shooting of P40 Pro has serious color difference, and orange has completely turned red.
However, at present, Huawei P40 Pro has not been officially marketed. Therefore, Huawei may solve this serious color deviation problem by upgrading the algorithm in the near future.
Look at the motherboard. The main board of Huawei P40 Pro is the same as that of the previous generation P30 pro, which adopts a three-layer PCB stacking design. This can make full use of the internal space.
In the selection of internal components, the P40 Pro Series is actually similar to the previous P30 Pro Series.
As shown in the figure below, on the P40 Pro motherboard, the red is skynix h9hknnfbmau lpddr4x memory, which is superimposed on the top of Huawei Kirin 9905g SOC through the pop process. The green one is Samsung's klueg8uhdb-c2d1 ufs3.0 flash memory. The purple one is hishi1105 WiFi 6 chip.
In contrast, we can see that the previous P30 Pro motherboard in the figure below also uses the same model of skynix h9hknnfbmau lpddr4x memory (in the red box).
On another small board of Huawei P40 pro, we also see that the RF front-end chips of skyworks and qorvo also exist on P30 pro and hisilic's RF transceiver chip, but the specific models may be different.
In contrast, we can see in the figure below that Hisilicon hi6363 gfcv100 RF transceiver (green), skyworks 78191-11 front-end module (sky blue) for WCDMA / LTE and qorvo 77031 front-end module (dark blue) on Huawei P30 Pro motherboard.
The power management chip of Huawei P40 Pro motherboard basically adopts the chip developed by Huawei Hisilicon. The models are Hisilicon hi6421, Hisilicon hi6526 and Hisilicon hi6422.
Huawei P40 Pro motherboard power management chip
Front and rear microphones of Huawei P40 Pro motherboard
After talking about the motherboard, let's look at the other parts that haven't been disassembled. Like the previous Huawei P30 pro, the P40 series cancels the traditional front earpiece and adopts the screen sound technology. The small circular module in the figure below is the key to screen sound generation. It does not generate sound waves through the vibrating film, but through vibrating the rigid surface (glass screen). The driving part of the module includes a coil with a magnet in the middle, and the other part is connected to the screen.
Look at the auxiliary panel and speakers below. There are seven screws to fix them. In addition, the auxiliary board can only be removed after removing the connecting cable between the fingerprint identification FPC and the speaker.
After removing the auxiliary board, you can remove the USB type-C connector at the bottom. As you can see, the C-type connector is also protected by a waterproof and dustproof rubber ring and connected to the upper motherboard through a long FPC cable.
At the lower right corner of the daughter board is the vibration motor of P40 pro, which is the same size as the previous p30pro. It is also a Z-axis linear motor. Compared with other friends' X-axis linear motor, the experience is worse. However, the position is no longer in the upper left corner, but moves to the common lower right corner. Compared with P30 pro, the experience needs to be improved.
Comparison between z-axis linear motor of Huawei P40 pro and X-axis linear motor of other friends
Huawei P40 Pro still adopts single speaker design and supports Huawei historical sound effect.
After removing the battery, we can see that P40 Pro uses 4200mah battery produced by Huizhou Desai battery.
(note the last line, the manufacturer is Huizhou Desai)
After removing the battery, you can see the fingerprint module under the ultra-thin screen provided by huiding technology. However, to delete it, you need to delete the screen first.
Huawei P40 Pro adopts four bend flexible OLED screen and IP68 waterproof and dustproof design, so it needs to be disassembled very carefully. After heating, it needs to be used together with dishwashing degumming agent, and then drop degumming agent to separate the screen while taking out the parts.
When you unload the screen, you can see that there is a buffer foam in the middle of the mobile phone frame at the bottom of the screen. Under the buffer foam, there is a VC soaking plate, and the black part in the upper right corner is the heat dissipation film.
In contrast, the area of the cooling film VC soaking plate at the bottom of the P40 Pro motherboard and the battery is much smaller than that of the p30pro. It seems that Huawei has more confidence in the heat dissipation control of P40 pro. It should be noted that P30 Pro uses Kirin 990 external 5g baseband, while P40 Pro integrates Kirin 9905g and 5g baseband. Therefore, the area of the main board is small, and the power consumption and heat generation are small.
Then let's look at the fingerprint module under the ultra-thin screen. We can see that it no longer needs to cooperate with ultra short focal length lens, and its thickness is only 0.69mm, which also leaves more space for the interior of the mobile phone.
Next let's look at the P40 Pro screen. As mentioned in previous P40 series supply chain analysis articles, BOE is the main supplier of Huawei P40 and P40 Pro flexible OLED screens.
Yuan Feng, vice president of BOE, also said through his microblog that "P40 and P40 Pro use BOE's flexible screen", but he did not say that this is an exclusive supply.
Previously, Huawei disclosed the P40 series screen supplier in the nova6 source code on the Internet. According to the code, the screen supplier of P40 is BOE, while the P40 Pro is provided by BOE and LG.
However, according to the mobile error report message of P40 pro, the screen suppliers of P40 Pro are LG, BOE and Samsung.
So, which screen is the P40 Pro disassembled by xyzone? Through the marks on the screen cable, we can see that the supplier of the screen is LG display.
Under the microscope, the AMOLED screen of LG display used by Huawei P40 Pro is also the same diamond arrangement as Samsung.
However, it should be noted that the AMOLED BOE screen previously used by black shark 3 Pro is a diamond array. Therefore, it is unclear whether there are "Diamond arrangement" AMOLED screens in P40 and P40 pro.
Similarly, the LG screen of the rhombic P40 Pro is compared with the BOE screen of the black shark 3 Pro
Responsible editor: PJ, read the full text“
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