指纹扫描功能已逐渐成为智能手机的必备配置，一般的指纹扫描都设在实体按键上，多设在 Home 按钮位置，又或设在机背的特定位置，但将来可能不再见到指纹扫描，因为 LG 有新的技术。
LG 旗下的 LG Innotek 公布他们已开发出新的指纹扫描感应，只有 0.3mm 厚度，并可置于屏幕玻璃下。用家只要将手指放在屏幕特定的位置就可作指纹扫描。
这个新技术可以让手机设计更多变化，机身不用特意为指纹扫描留位，由于指纹扫纹置于玻璃下，亦变相保护了指纹指纹感应，减少感应受损的机会。由于少了开口位，防水手机亦可获得改进。
不过，暂未清楚这个指纹新技术何时会推出至销售产品。
LG Innotek unveils innovative fingerprint sensor module without button
Seoul, Korea, May 2, 2016 – LG Innotek (CEO Jongseok Park) today announced an under glass fingerprint sensor module. It means you just placed your finger on the cover glass of the phone and then it identifies your fingerprint.
This module gives the freedom of the smartphone design and even enhances the user-friendly function, for example, waterproof or protection from any damage.
Previous ‘button type’ modules required you to press a finger on a raised square or circular button for your fingerprint to be read exactly, so the sensor was usually mounted on the front, rear or side buttons of a smartphone.
LG Innotek cut a shallow furrow of 0.01inches (0.3mm) thick on the lower backside of the cover glass and installed the fingerprint sensor inside of it with using their supreme precision and combination technology.
With this module, the sensor is not exposed to the outside of the device, so manufacturer can produce a sleek designed smartphone. Fingerprint recognition area also can be indicated by various patterns up to design of complete product.
High-strength cover glass protects the sensor and prevents it from coming in direct contact with water or damage from scratches.
At the same time, the new module secured the fingerprint recognition accuracy compared to the button type. The new module has a false acceptance rate (FAR) of 0.002%. The FAR is the probability that the system falsely recognizes someone else’s biometric information as that of the user.
LG Innotek developed a proprietary adhesive to be used to attach the sensor to the glass, securing the commercialization scale of the durability including high impact absorption.
The adherend side of the sensor and glass is only 0.0098inches (0.25mm) thick, but it endures impact of 4.6 oz (130grams) of the steel ball dropped from 7.9inch (20cm).
LG Innotek expects that demand for fingerprint recognition technology will dramatically increase due to the expansion of the mobile payment market, has a plan to secure the new customer.
Market research firm, IHS, reports approximately 499 million fingerprint sensors have been sold globally in 2015 and expects that number will increase to 1600 million units in 2020.
Changhwan Kim, Head of the company’s R&D Center said, “We are concentrating on all our resources to the development of the differentiated technology based on the creation of customer values.” “We will continue to provide convenient, safe, and pleasant user experiences by launching innovative product.”
