tft lcd fingerprint on display manufacturer

OSLO, NORWAY--(Marketwired - Jul 21, 2016) - NEXT Biometrics Group ASA (Oslo Bors: NEXT) and Innolux, one of the world"s largest manufacturers of TFT-LCD-panels and NEXT Biometrics Group ASA today jointly announced that they are investing in establishing mass production capacity for the previously showcased NEXT flexible fingerprint sensor technology.

Innolux and NEXT Biometrics has worked together for many years and NEXT Biometrics is manufacturing volumes of rigid fingerprint sensors at Innolux plants in Taiwan. With NEXT Biometrics` recent introduction of the world´s first flexible fingerprint sensor, the companies have agreed to do joint investments to enable mass production of these new fingerprint sensors. NEXT Biometrics has previously communicated a production capacity target of 2 million flexible sensors per month in 2017, growing to 10 million per month in 2018.

NEXT Biometrics" CEO Tore Etholm-Idsøe said, "We experience major interest in the world´s first smart card industry compatible flexible sensor. The upcoming transition to mass production is not trivial and we are very happy for Innolux active support in this process. They are a $10 billion annual sales TFT-LCD displays manufacturer and are, of course, highly experienced in solving issues when ramping-up for mass production of new product formats."

The NEXT Biometrics CEO added, "We have made significant progress during the recent months, and we are proud to announce that Innolux will now invest money, time and knowledge along with NEXT Biometrics to bring the flexible sensors to the world market."

Innolux Vice President James Yang commented, "There is a massive opportunity in the market for flexible fingerprint sensors, and we strongly believe in the NEXT Biometrics technology. The company is unique in the sense that they are bringing to market a truly flexible sensor, which meet the smart card industry requirements while it can be mass produced at cost levels that are compatible with smart card market value propositions. We have therefore decided to help bring the project forward as quickly as possible, investing Innolux knowledge as well as capital resources."

About Innolux: Innolux is a global company with more than 68,000 employees, headquartered in Taipei. Innolux customers include many of the world´s leading information and consumer electronics manufacturers. Its all-inclusive product lines span the full range of TFT LCD panel modules and touch panels, including TV panels, desktop monitors, notebook computer panels, small and medium-sized panels, and medical and automotive panels.

About NEXT Biometrics: Enabled by its patented NEXT Active Thermal principle, NEXT Biometrics (www.NextBiometrics.com) offers high quality area fingerprint sensors at a fraction of the prices of comparable competitors. A wide range of product formats including Smart Cards, Smartphones, Tablets, PC"s, Doors, Time registration systems, Wearables, Payment terminals, Flashdrives, USB-tokens, Key fobs and many more are targeted.

NEXT BIOMETRICS GROUP ASA is a publicly listed company headquartered in Oslo, Norway and with sales, support and development subsidiaries in Seattle, Silicon Valley, Taipei, Prague and Shanghai. Media and Investor contacts for NEXT Biometrics: Tore Etholm-Idsøe, CEO, Tore.Idsoe@NEXTbiometrics.com and Knut Stalen, CFO, Knut.Stalen@NEXTbiometrics.com.

New sensor technologies are being developed specifically for the integration of fingerprint scanning functionalities with OLED displays. The recent announcements indicate that the industry is moving away from capacitive sensors to focus their efforts on optical or ultrasonic detection. For display manufacturers, this could even present opportunities to innovate and offer their own solutions.

Once a premium feature, fingerprint sensors have become almost standard on smartphones. However, the latest design trend is to remove the bezels around the display, leaving no room for the fingerprint sensor. Some OEMs made the choice to move the sensor to the back of the device, which is not always convenient (for instance when mounted on a car dash).

The more ambitious option is to integrate the fingerprint sensor with the display. For the iPhone X, Apple considered this option but decided in the end to rely only on their new FaceID technology which uses an infrared camera for face recognition. The exact reasons are unclear, but it is safe to say that introducing a fingerprint sensor would have pushed the manufacturing cost of the phone even higher. It is also possible that the technology was simply not up to the standard of Apple at the time.

The industry is progressing fast however. At CES this year, Vivo introduced the first smartphone with an under-display fingerprint scanner. The sensor inside is the new Clear ID FS9500 by Synaptics. What makes it so different? It is an optical sensor.

Although Synaptics had built a strong expertise in capacitive sensors, they had to switch to an optical system for the FS9500. You can think of it like the image sensor inside a camera but without a lens. Conventional capacitive fingerprint sensors are difficult to integrate with a display because the distance between the sensor and the finger must be very short (300 microns). With optical sensing, it is possible for the sensor to be further away from the surface and still produce a high resolution scan.

There is however another challenge: an optical sensor is not transparent so it has to sit behind the display. This solution does not work well with LCD panels which are transmissive displays with a backlight. Fortunately, many new smartphones now use OLED displays instead of LCD, making it much easier to integrate an optical fingerprint sensor. With OLED, the display is used as the illumination light and the sensor captures the reflected light that travels back through the display. According to the presentations from Synaptics the distance between the finger and the optical sensor can be as high as 1.5 mm. This is well within the thickness range of an OLED panel with a standard cover glass.

Image sensors like the one used by Synaptics are usually made with CMOS technology. CMOS sensors can achieve resolutions over 2,000 dpi and can be mass produced in existing semiconductor foundries. Synaptics is not the only one taking advantage of this mature industry. For example, Vkansee is another company that has developed a CMOS optical sensor for fingerprint scanning. However, large CMOS sensors are expensive and the cost increase exponentially when scaling up to even larger sensing areas. In other words, it is not an economically viable option to turn the whole display into a fingerprint scanner. You are more likely to get a scanning area the same size of a small button.

For the display industry, there is an opportunity to offer an alternative to CMOS sensors. Some companies are now trying to leverage their expertise in manufacturing thin-film transistors (TFT) to make their own fingerprint sensors. For example, Japan Display Inc. (JDI) are now developing a sensor on glass that is based on the same polysilicon TFTs used in their LCD panels. The sensor is capacitive so is not designed to be placed behind a display. Since TFTs are used to make the active matrix in LCD or OLED displays they are ideal for making large sensor arrays.

The most interesting new development was shown by BOE at the Display Week exhibition this year. The Chinese manufacturer demonstrated the first under-display fingerprint sensor made in-house with TFTs. The optical sensor had a resolution of 500 dpi and was placed directly under an OLED display. They said they could make the sensor on conventional glass substrates or on plastic to match the sensor with flexible OLED displays.

BOE was also showing another prototype featuring an 800 dpi CMOS fingerprint scanner manufactured by Vkansee. This clearly demonstrated the strengths of each approach: higher imaging resolution with CMOS, larger sensing area with TFT. Although the sensor in the TFT demo was smaller than the display, it will be possible in the future to make larger ones to cover the whole. BOE also said they use new materials which will make it cheaper to scale up.

Making fingerprint sensors with TFT is not completely new. Already back in 2016, FlexEnable and Isorg demonstrated a flexible fingerprint and vein sensors with an 86 × 86 mm active area. The device combined FlexEnable’s organic TFT backplane with Isorg’s organic photodetector. Since then, they have been able to achieve a resolution of 500 dpi, which is the level usually required for secure biometric applications. It would be fascinating to see this sensor integrated with an OLED display, as it would result in a Trinity of organic electronics (OLED, OTFT, OPD) combined into a single device.

The Holst Centre has also been developing organic photodetector arrays, but they used metal-oxide TFT for the backplane. The prototype they demonstrated at Display Week is relatively large (60 × 80 mm) but can only produce images at 200 dpi [UPDATE: they also made a smaller sensor with a 500 dpi resolution]. The Holst Centre says the technology will be transferred to industry for commercialisation.

Is optical detection going to be the dominant technology for fingerprint sensors? It seems that most of the industry is betting on it. However, one big player wants to offer an alternative. Qualcomm has been developing an ultrasonic sensor for several years and the company says it can also be placed behind a display. There are limitations though. Unlike optical sensors, ultrasonic sensors do not see through air gaps, so they will be better suited for flexible OLED displays that are bonded to the front glass of the device.

The rapid adoption of OLED displays in smartphones has enabled new possibilities. First it was the transition to flexible displays and now the integration of fingerprint sensors. It is going to be a very exciting time for the sensor and display community and I believe we are going to see a lot of innovations in the coming years.

Dr Guillaume Chansinis the founder and principal consultant atIrimitech Consulting. He has been following emerging materials and devices since 2012 and has spoken at major industry events on printed/flexible electronics, wearables, displays, and sensors.

Hikvision’s DS-K1T201MF 1 Series optical IP-based fingerprint access control terminals feature multiple advanced technologies, including fingerprint recognition, face detection, Wi-Fi, smart card recognition, LCD display screen, and picture capturing technology.

As the security control of money flows becomes increasingly strict, identity authentication relying on a single fingerprint reader is no longer sufficient. This time, AUO will present the unique ultra-thin LTPS TFT optical fingerprint sensing module, with a sensing area of up to 2.9-inch, integrated under OLED panel and a 6.4-inch LCD panel incorporating finger recognition, touch and display functions. Besides the application of in-cell touch technology and a three-in-one integrated IC, the 6.4-inch LCD panel breaks through the limits when integrating CMOS image sensor structure to existing panels to offer a large customized sensing area of up to 50mm x 50mm. Both technologies support multi-finger authentication and are exceptionally ideal for financial transactions, as they can substantially improve the security of biometric recognition. In the meantime, AUO will also demonstrate a TFT optical fingerprint sensor with the world’s highest pixel density(*) up to 1000PPI, which can not only clearly recognize the fingerprints of delicate newborn baby fingers, but also detect the heartbeat through the slightest grayscale change of fingertip pulse to achieve a more accurate identity authentication and significantly improved security and anti-counterfeiting level.

Strengthening its strategy of medical applications, AUO incorporates the TFT manufacturing advantages to the investment of X-ray sensor. This time, AUO will demonstrate the flexible X-ray sensor featuring lightweight and unbreakable properties, which can substantially enhance product durability and is perfect for portable X-ray machine. This sensor is expected to replace the market dominance position of glass sensors and drive curved X-ray applications used for CT scan and industrial pipe/tube detection. AUO’s 17x17-inch X-ray display applies a-Si process and possesses an extremely small pixel size of 100μm and 4302 x 4302 ultra-high resolution image to provide a larger display area with better image quality as well as assist a more accurate diagnosis of signs. Besides the traditional static X-ray used on chest and orthopedic diagnoses, the demands of dynamic and 3D imaging including blood and oral applications are increasing. To meet these demands, AUO releases a 6x6-inch X-ray display achieved by LTPS TFT process to deliver a higher refresh rate and lower image noise and provide a low-dose X-ray solution when it is necessary to take multiple dynamic images.

In addition to demonstrating various applications of innovative technologies, AUO Senior Associate Vice President Mr. Ivan Wu will deliver a speech entitled “Sensing Technology and Application” during 2021 Touch Taiwan to share AUO’s experiences of utilizing its display technologies to create a tighter connection of human-machine interface through introducing next-generation sensing technology into application field.

AUO is committed to facilitating industry-academia cooperation and bridging learning and field for years. This time, AUO co-organizes I-Zone, national innovative display zone, in Touch Taiwan and invites domestic industrial, academic and research organizations to present projects including smart display material, component and system full of originality. Besides the cash prize of Invention Award sponsored by AUO, the awardee also has the opportunity to win a summer internship at the company to be engaged in the industrial ecosystem as early as possible, realizing all the new and innovative ideas.

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The advent of optical fingerprint scanners revolutionized the market of smartphones. With an under-glass scanner, companies achieved truly bezel-free smartphones. However, there are some limitations delaying this technology. That’s why the technology is still away from leaving the flagship spectrum. However, BOE, the reputed display manufacturer, has a solution to bring the technology into the midrange segment.

The leading Chinese display manufacturer, BOE Display Technology has announced that it has successfully developed an optical fingerprint technology-supporting LCD display. According to the company, the technology is ready to be produced in large scale. Therefore, mass production is already set to start late this year.

The current UD fingerprint technology in use is either optical or ultra-sonic. Both these technologies are only achievable on OLED displays. This is due to the fact that OLED panels are thinner than LCD ones. Thus, it is easier for penetration to take place between the finger on the screen and the sensor placed beneath. BOE’s technology is much important since it will allow manufacturers to employ these sensors on cost-effective smartphones that use LCD panels.

A month ago, Taiwan-based Display Manufacturer, AU Optronics announced a 6-inch full-screen optical embedded fingerprint scanning LTPS display. This was the world’s first technology that supports optical sensors embedded in LCD screens. The panels come with FHD+ resolution with 403 pixels-per-inch.

It’s really good to see companies going around the past limitation of this technology. The possibility of employing a fingerprint scanner on an LCD equipped smartphone will make this new tech more accessible. While users love OLED displays, LCD is still much more accessible.

Low-end and Mid-range users, embrace your dreams. Now that these fingerprint scanners are possible on cheaper models, it’s just a matter of time to see BOE developing cheaper solutions for the foldable display segment.

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Smartphones are always progressing. Years ago, it was crazy to think that a budget smartphone could have a fingerprint scanner. Since then, the proliferation of the fingerprint scanner has made it so that it is ubiquitous even in the sub-$200 market. The next evolution of it is the in-display fingerprint scanner, which removes the need for a dedicated hardware sensor taking up space on the body of the device. That technology has been limited to OLED panels so far, though, because their thinness allows light to pass through easier. That"s set to change as both BOE and AUO Optronics announced an LCD displays that support an optical in-display fingerprint scanner.

For those unfamiliar, BOE is one of the lesser-known display manufacturers in the business. Even still, they"re no stranger to both the flagship and the budget markets. For example, the Huawei Mate 20 Pro used panels made by both BOE and LG (though they were seemingly not high quality). AMOLED panels are still more expensive than LCD, so this particular advancement will allow for budget phones to have an in-display fingerprint scanner.

Just last month, Taiwanese manufacturer AU Optronics launched a 6-inch full-screen optical embedded fingerprint scanning LTPS display. This is the world"s first fingerprint scanning technology that supports optical sensors embedded in an LCD screen. At the moment, it comes in FHD+ resolution, 2304x1080. We don"t really know when these panels will begin to ship, though Wang Teng, product director at Xiaomi, says that he expects to see them arrive early next year or by the end of this year.

These fingerprint scanners will definitely not be contenders for their flagship counterparts, but they"re yet another example of a hardware advancement trickling down to lower-cost phones. It could well be possible that their performance is actually worse than first-generation in-display fingerprint scanners on AMOLED panels.

Fingerprint sensors will still be the first choice for most Andriod phones in 2018, since other biometric authentication methods available for Andriod phone makers cannot completely replace fingerprint identification yet, says TrendForce. Meanwhile, in-display fingerprint sensors are expected to make breakthrough this year, and vendors like Samsung, LG, OPPO, Vivo, Xiaomi, Huawei are likely to embed this technology, bringing the global fingerprint sensor penetration rate in smartphones to 60%.

Apple acquired Authentic in 2013 and have embedded fingerprint scanning in iPhones and iPads since then. In the past years, Android camp has also adopted fingerprint scanning to unlock phone and make mobile payment. However, as full-screen becomes the trend and Apple replaces Touch ID with Face ID in 2017, Android camp has to adjust their strategies, says TrendForce.

The mainstream fingerprint recognition solutions are based on capacitive sensing technology. On other hand, designs of smartphone displays are shifting towards higher screen-to-body ratio and full frontal screen. Phone makers recognize that there is insufficient space for the front side of the smartphone for a standard capacitive fingerprint sensor, and thus put their focus of development on in-display fingerprint sensor in recent years. At the end of 2016, Synaptics released UnderGlass, an optical solution of fingerprint sensing, which overcomes the limitation that capacitive solutions cannot sense through the glass panel of phones. Recently, Synaptics also released new in-display fingerprint sensing solutions for AMOLED panels. After more than a year of development, Synaptics’ optical solutions of in-display fingerprint sensing have chance to enter mass production due to the increasing yield rate of Synaptics and other related companies.

Capacitive fingerprint sensing chips and TDDI chips used to be the key product lines of Synaptics from 2016 to 2017. But as the competition becomes intense, Synaptics has started to actively develop in-display fingerprint sensing technology. Its competitor Goodix, for instance, has recently sent sample products to major mobile phone vendors for testing; Qualcomm has cooperated with Vivo in developing ultrasonic fingerprint sensing in 2017; FPC, the Swedish biometric authentication solutions provider, also released its ultrasonic fingerprint sensing technology at the end of 2017. The active engagements of these companies indicate that in-display fingerprint sensing will bring about a new trend for smart phones.

In addition to Korean brands Samsung and LGE which make AMOLED panels by their own, Chinese smartphone brands such as OPPO, Vivo, Meizu, Gionee, Xiaomi and Huawei will also have chance to embed in-display fingerprint sensor for AMOLED panel in their new models to release in 2018. However, Samsung still dominates global production capacity of AMOLED panels, which will limit the scale of Android camp’s adoption of in-display fingerprint sensing in their flagship models. As the result, a large number of middle and low end smartphones will continues to use traditional capacitive fingerprint sensing that has costs less. TrendForce estimates that global smartphone shipments for this year will total around 1.53 billion units, in which the penetration rate of fingerprint recognition technologies will reach 60%, an increase of five percentage points up from 55% of 2017.

In this section we will go through the several ways of connecting MCU / MPU / CPU with LCD – MCU/Parallel | Serial |SPI | IIC (I²C) | RGB | LVDS | MIPI DSI | eDP | URAT | USB | HDMI | RS232. Learn more.

Tuning capacitive touch panels (CTP) needs tiny capacitance differences for its operation. Dirty power supplies and stainless-steel table can affect CTP performance.

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