In the twinkling of an eye, 2015 is about to pass. When we look back at this year's mobile phone circle, it is not difficult to find two key words - metal body and fingerprint recognition. Although the fingerprint recognition function did not appear on smartphones until this year, 2015 is definitely a year of fingerprint identification mobile phones. In this year, major mobile phone manufacturers first adopted the same positive fingerprint identification scheme as the iPhone. However, it was not long before manufacturers suggested that the fingerprint recognition function was better used on the back of the fuselage (low cost is the truth); For a time, the debate about whether the underwear should be worn or reversed? has become one of the topics that must be discussed at major mobile phone conferences. Until the emergence of the side fingerprint identification scheme, the vast number of mobile phone users discovered that the original fingerprint recognition button can also be placed on the side, especially for models with a fully balanced design such as the Sony Z series. The side fingerprint identification scheme is like Tailor-made in general, it retains the original beauty of the mobile phone to the utmost extent, and can get an excellent experience. So why didn't anyone think of using a side fingerprinting scheme at first? No one thought that it was impossible, but all major mobile phone manufacturers will take the lead in adopting more mature technical solutions. However, because of the greater technical difficulty of the side fingerprint identification solution, the first-line fingerprint module supplier represented by FPC did not initially The introduction of the corresponding components; coupled with the side fingerprint identification has special requirements for the tight structure, ordinary mobile phone manufacturers would rather retreat, and do not want to spend too much energy in this direction. So, what technical difficulties will the side fingerprint identification scheme face? Below we will simply talk about the technical difficulties of side fingerprint recognition. In fact, whether it is positive fingerprint recognition, back fingerprint recognition, or side fingerprint recognition, ensuring user experience is the first thing that every responsible manufacturer must do. The user experience mentioned here includes two kinds of input experience and recognition experience of fingerprint recognition. The speed of identification (entry) and accuracy are important indicators that affect the related experience. However, since almost all fingerprint mobile phones use an independent fingerprint identification module (including an integrated algorithm chip and a semiconductor sensing original), the actual experience of fingerprint recognition of the module is determined before the installation. In the case of a certain algorithm, it is the best way to improve the recognition rate and recognition speed by reducing the gap between the long side and the short side of the semiconductor sensing area. This is why the original fingerprint identification module mostly uses a square semiconductor. Identify the original. Therefore, the fingerprint recognition button we first saw was either circular or square. However, it is well known that all major mobile phone manufacturers have their own family-style mobile phone appearance. We can't imagine how Samsung will use the round fingerprint recognition button. We can't imagine the Sony Z series with fully balanced design on the front of the fuselage or What kind of screen is the integrated fingerprint recognition button on the back. Therefore, the fingerprint original supplier represented by FPC began to consider making the fingerprint identification original into more shapes by improving the algorithm. Therefore, we have seen some manufacturers start to adopt elliptical fingerprint recognition buttons, and there is no significant reduction in recognition speed and accuracy. With the further upgrade of the fingerprint recognition algorithm, we began to hear the rumors of the side fingerprint recognition mobile phone. However, careful netizens found that the release of the earlier Huawei Glory 7i did not integrate the power button with the fingerprint identification button, but the latest release of the Sony Z5 did this. Why? This is to say that the other two technical difficulties of the side fingerprint identification scheme are. First of all, the manufacturer has to solve the problem of space occupation. Since the side of the fuselage involves problems such as teardown, the fingerprint recognition module and the power button all occupy a certain space. In order to integrate the two together, the fingerprint recognition mode must be adopted. The group is as thin as possible. In addition, the author guesses that after the fingerprint identification original is integrated into the power button, since the cable is still connected to the motherboard, and the power button is an active mechanical structure, the manufacturer must perform tens of thousands of endurance tests to ensure the The stability of the design. Second, mobile phone manufacturers need to face another process problem, because the power button integrated with fingerprint recognition has become much wider than the original. This has a great impact on the thickness of the fuselage. The power button width of the Sony Z5 is about 3.5mm, which is almost the limit of the current fingerprint recognition button. On the basis of integrated fingerprint recognition, mobile phone manufacturers should ensure the stability of the fuselage structure and the feel of the user's grip as much as possible, so they have to adjust the thickness of the fuselage slightly. This is why we see it. The Sony Z5 is a bit thicker than the previous generation flagship. This is also the trade-off we have to face while gaining the convenience of side fingerprint recognition. Of course, as fingerprint identification accessory manufacturers continue to optimize their own product algorithms, we will also see a “slimer†fingerprint recognition button, and the thickness of the corresponding model will be reduced accordingly. By then, the advantages of the side fingerprint identification scheme will be more obvious. 20A125V Hospital Grade Receptacles,Hospital Grade Receptacles,UL 498 Standards Hospital Grade Receptacles YESWITCH ELECTRONICS CO., LTD. , https://www.yeswitches.com