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Posts Tagged ‘underdisplay’

Xiaomi introduces 3rd-gen under-display camera, promising unparalleled performance

29 Aug

As consumers demand increasingly sleeker smaller smartphones, manufacturers have been grappling with how to convincingly hide front-facing cameras. Solutions have included Apple’s now-ubiquitous notch design, a punch hole design and even cameras hidden underneath the phone’s display. Xiaomi hopes its newly announced third-generation under-display camera will be the best version of the lattermost approach yet.

Xiaomi’s first two generations of under-display camera tech never made their way into mass-produced devices. The latest generation, on the other hand, will be widely available in 2021.

Underpinning the new tech is a revised pixel arrangement solution. The screen allows light to pass through the gap between the sub pixels in the display. This allows each individual pixel to retain a complete red, green and blue (RGB) pixel layout. By utilizing the gap between sub pixels, the display doesn’t need to compromise with respect to pixel density.

The design of Xiaomi’s third generation under-display camera (left) shown against a typical display area (top right) and ‘normal’ under-display camera (bottom right). Image credit: Xiaomi

Xiaomi states that ‘Compared with other common solutions on the market, Xiaomi has doubled the number of horizontal and vertical pixels, achieving the same pixel density above the camera as on the rest of the display area.’ Xiaomi continues, promising that the area above the camera will match the rest of the display in terms of brightness, color accuracy and color gamut.

There’s no question that the more seamless a front display, the better. However, it’s a considerable engineering challenge to produce a display with a hidden camera without sacrificing the quality of either the display or the camera it conceals. Thus far, hidden camera technology has not completely convinced discerning viewers, as discussed by Engadget with respect to similar tech from Oppo.

To showcase its latest generation, Xiaomi released an overview video, which you can view below.

As first pointed out by The Verge, if you look closely at the 0’29” mark of the above video, there appears to be a slight square shadow. In earlier portions of the video, you can see a very faint circle where the camera is located. Xiaomi assures that the camera will be invisible, so it’ll be interesting to see the final product when it ships next year.

While we must wait until 2021 to see Xiaomi’s third-gen camera out in the wild, we won’t have to wait long for a new smartphone with an under-display camera. ZTE will launch its ZTE Axon 20 smartphone next month. It’s unclear if this device will be available outside of China. Nonetheless, as is often the case, a race between firms to develop better technology will benefit end-users.

Articles: Digital Photography Review (dpreview.com)

 
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ZTE to launch the first smartphone with under-display front camera on September 1st

19 Aug

The front of modern smartphones is almost entirely occupied by the display which makes integrating the selfie camera an ever more difficult task for designers and engineers. We’ve seen solutions using camera notches, hole-punch cameras and pop-up mechanisms but none look as elegant and inconspicuous as a camera that is hidden under the display.

Some under-display prototypes have already been making the rounds but now we’ll finally have a working production model to play with. Chinese manufacturer ZTE has just announced it will launch the world’s first smartphone with under-display front camera on September 1st. The company says the ZTE Axon 20 5G ‘will be the world’s first mass-produced 5G smartphone featuring under-display camera, marking another milestone in ZTE’s exploration of the true full display smartphone.’

Xiaomi prototype with under-display camera next to a device with front camera notch

Unfortunately no other specs or pricing information has been released at this point but XDA-Developers has discovered a recent database entry by Chinese regulator TENAA that lists the Axon 20 5G as a device with 32MP front camera and a quad-rear-camera setup with 64, 8 and a pair of 2MP modules. Other rumored specs include 6.92-inch HD OLED display and up to 12GB of RAM.

Previously manufacturers Xiaomi and Oppo were the first to demonstrate technology allowing for the front camera to be placed under and capture images information through the display. Prototype devices made an appearance but in January 2020 Xiaomi VP Lu Weibing said there were still too many technological challenged to overcome and a production devices should not be expected any time soon, mainly because the high pixel-density of modern smartphone displays blocked too much of the incoming light from the camera lens and sensor.

However, not too long after this statement was made OLED manufacturer Visionox announced it was ready to start mass production of displays with under-screen cameras. The company claimed it had been successful at increasing light transmission by using different organic and non-organic film materials that offer higher transparency. It also developed a new software for correcting brightness and color casts as well as viewing angle issues to work in conjunction with the new type of display.

In addition the pixel density on the portion of the display covering the camera lens has been modified to allow for better light transmission by reducing the display resolution in the specific area where the camera is located.

At this point it is unknown if the ZTE Axon 20 5G is using the VIsionox solution or a similar approach. However, we should know more and find out what kind of image quality the first under-display front camera can deliver on September 1st.

Articles: Digital Photography Review (dpreview.com)

 
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Visionox is ready to mass produce under-display front cameras

08 Jun

Chinese smartphone manufacturers Xiaomi and Oppo first showcased new technology that allows for the front camera in smartphones to be installed under, and capture images through the display in the middle of last year. The main benefit of this new technology is the eradication of unsightly large display bezels, notches or punch holes for housing the front camera.

The technology eventually made it into prototype devices but in January 2020 Xiaomi VP Lu Weibing said it should not be expected to arrive in a production device any time soon, as there were still a number of challenges to overcome.

The principal reason given at the time was the high pixel-density of modern smartphone displays which blocked too much of the incoming light. In combination with the small image sensors of most front cameras, this meant severely limited light gathering capabilities and ultimately sub-par image quality, especially in low light conditions. In addition diffraction from the protective glass could lead to color issues.

However, it appears it’s taken less time than expected to solve this issue. According to reports in Chinese media, Visionox, a major OLED manufacturer, is ready to start mass production of displays with under-screen cameras.

Visionox claims it has been able to increase light transmittance and reduce diffraction by using different organic and non-organic film materials that offer higher transparency. On the software side of things, a new algorithm is capable of correcting brightness and color casts as well as viewing angle issues. It also removes the glare that could be seen in sample images from early prototypes.

The pixel density on the portion of the display covering the camera lens has also been modified to allow for better light transmission. On a Full-HD display, the resolution in the specific area where the camera is located could be reduced to HD or even SD levels. We’ll have to wait for the first production devices to see if the change in resolution will be noticeable on the display and if image quality is comparable to more conventional front camera implementations.

Visionox says hundreds of new technologies have been applied in order to get to the mass production stage. Even with the company in a position to manufacture the new type of displays now it’ll still be a while before we can expect devices equipped with the technology. The first models with under-display cameras are expected to see the light of day in Q1 2021.

Articles: Digital Photography Review (dpreview.com)

 
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Xiaomi VP says under-display front camera tech is not ready yet

30 Jan

Over the last year or so we have seen some smartphone manufacturers, including Xiaomi and Oppo, experimenting with under-display front cameras. The technology could allow for the design of displays without a ‘notch’ or front camera ‘punch hole’ but also means that incoming light has to first travel through the display before it hits the camera lens.

The latter is a major challenges to overcome and a reason why, according to Xiaomi VP Lu Weibing, we should not expect the technology to arrive any time soon in a production device.

Currently the pixel-dense displays of modern smartphones block too much of the incoming light. Combined with the small image sensors deployed in most front cameras this means the imaging module’s light gathering capabilities are much more limited than on a more conventional camera, resulting in sub-par image quality.

Researchers and engineers are looking to develop technologies that allow for a combination of high pixel density and good light transmittance but are not quite there yet. Until the problem is solved there probably aren’t too many consumers willing to sacrifice front camera image quality for a more streamlined device design which is we’ll likely have to wait a little longer for the technology to make it into mass production.

Articles: Digital Photography Review (dpreview.com)

 
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Oppo demonstrates its under-display front camera in prototype devices

13 Dec

Back in June Chinese smartphone maker OPPO announced a device with an under-display front camera at MWC Shanghai. This allows for the design of display without a ‘notch’ or front camera ‘pinhole’ but also means that incoming light has to first travel through the display before it hits the camera lens.

To make this possible the display section above the camera is made of a highly-transparent material and comes with a redesigned pixel structure that is optimized for the transmittance of light. In addition, the camera comes with a bigger than usual sensor to further make up for any loss of light and white balance and HDR algorithms have been customized to reduce the transparent display’s impact.

This week, Oppo now finally shared prototypes of devices with the new in-display camera with press and media and thanks to a Twitter post by David Imel from Android Authority we can see the new design fully in action.

The new under-display camera system is hardly visible on the front of the device and only becomes slightly visible when viewing the phone at certain angles. Of course, it’s way too early to make any judgments on image quality but in terms of usability, the new system appears to work just like any other smartphone front camera.

Just like their rear counterparts, front cameras have taken huge steps forward in terms of image quality over the last couple of years or so. However, manufacturers have not only been focused on image output but also the integration into the device. We’ve seen notches and pinholes as well as motorized pop-up and flip-up front cameras. If Oppo’s concept catches on 2020 might well be the year of the under-display front camera.

Articles: Digital Photography Review (dpreview.com)

 
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Oppo reveals world’s first smartphone with under-display front camera

27 Jun

Earlier this months both OPPO and Xiaomi teased technology that allows the front camera on a smartphone to be located under the display, avoiding any notches, pinholes or other screen interruptions.

Today OPPO has shown a first device with the feature at MWC Shanghai and provided more information about the under-display technology. In order to make things work both customized displays and camera modules are required.

The display section covering the camera is made of a highly-transparent material and features a redesigned pixel structure that is optimized for the transmittance of light. Still, some light will be absorbed by the display, so the camera comes with a bigger sensor with bigger pixels and a larger aperture than you’d find in conventional front cameras.

There are also customized white balance and HDR algorithms to help boost camera performance and to further reduce the transparent display’s unavoidable detrimental impact on image quality OPPO has developed a haze removal algorithm for sharper and clearer image output.

In its announcement OPPO said it is developing a “futuristic, notchless, unibody and highly-recognizable smartphone,” but has not provided any detailed specs or information on pricing or availability.

Articles: Digital Photography Review (dpreview.com)

 
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OPPO and Xiaomi demo under-display front cameras

04 Jun
Xiaomi Mi 9 prototype with under-display front camera (left)

Front cameras are an essential component in mobile devices and used for a range of tasks, including selfie captures, video calls and face-unlocking. However, they can stand in the way of clean device design, taking up space on the front of the phone and requiring bulky top-bezels, display holes or a front camera ‘notch’.

Recently several manufacturers have come up with creative design solutions that ensure an uninterrupted almost bezel-less display. Pop-up and rotating cameras are mechanical solutions, however, that are subject to wear and tear. Now it looks like Chinese manufacturer OPPO has found a solution that does not require any moving parts: a camera that is hidden under the display.

OPPO VP Brian Shen shared a video clip on the social network Weibo, showing what appears to be a smartphone without any visible front camera holes or notches on a desk. When the camera app is launched a live preview of the room’s ceiling is displayed. The demonstrator also moves their finger over the area where the camera appears to hidden.

Rival Xiaomi did not take long to respond to the OPPO video, posting its own under-display camera demo. Company’s president Lin Bin shared a video clip in which an under-display camera was added to a Xiaomi Mi 9 prototype.

In contrast to mechanical solutions users of an under-display camera would not have to worry about wear and tear but in a follow-up post to the demo, Shen says that the technology is still in an early development phase. ‘At this stage, it’s difficult for under-display cameras to match the same results as normal cameras, there’s bound to be some loss in optical quality,’ Shen writes. ‘But, no new technology jumps to perfection right away.’ Neither OPPO nor Xiaomi have said when the new technology will be released.

Articles: Digital Photography Review (dpreview.com)

 
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