With the popularity of capacitive screen mobile phones for many years, the focus of the mobile phone industry chain is no longer just working on the front screen, but expanding to the mobile phone frame, back, and even providing users with a new way of space separation operation. Only two-dimensional touch smartphones are becoming fewer and fewer in flagship phones.

When jobs released the iPhone in 2007, with the characteristics of capacitive screen, he brought a new multi touch operation mode to the mobile phone screen. At the same time, most of the keys of the mobile phone have been eliminated, and the traditional nine palace key layout has gradually decreased in the mobile phone market, only retained in the function machine. In fact, it is rumored that jobs thought the ideal design was to remove all the keys of the mobile phone. Only because of the technical reasons at that time, the home, wake-up key and volume adjustment key were retained. This requires the further upgrading of mobile phone touch technology, including the upgrading of mobile phone frame and back technology, so as to make the two-dimensional touch more multidimensional.

In fact, the off-screen fingerprint identification using ultrasonic technology can also be regarded as the expansion of two-dimensional touch mode. In January 2018, vivo released the world’s first on-screen fingerprint identification mobile phone vivo x20plus on-screen fingerprint version. In the current Android mobile phone field, on-screen fingerprint identification has become a standard function of medium and high-end mobile phones.

On the other hand, mobile phone manufacturers are also increasing the touch dimension of mobile phones by adding screens on the back of the fuselage. For example, the dual screen versions of Nubia X and vivo nex, in addition to the traditional touch operation, the screen on the back can also be set as the corresponding virtual key in the game, so as to realize the player’s multi-dimensional touch during the game, which is no longer limited to the two-dimensional touch on the original front screen.

In addition to the touch screen, the mobile phone industry chain will also expand more interaction modes

The first way is to further bend and extend the mobile phone screen to the frame of the body. This design first appeared on the Samsung Galaxy note edge. This mobile phone released in September 2014 is equipped with a screen on the right side of the fuselage, which can prompt unread information. The next year, Samsung upgraded this design and provided two side screens for the phone on the galaxy S6 edge.

The design of curved screen also continues to this day. At the same time, some manufacturers have also developed targeted curved screen gestures. Therefore, on Huawei mate 30 pro, the 88 degree hypersurface screen can be used to make the dream of the disappearance of volume keys come true. Users can double-click the edge of the screen and slide up and down to adjust the volume.

On the other hand, even without curved screen, manufacturers began to use ultrasonic technology to add edge touch function to mobile phones. The Rog mobile phone, which is positioned in the mobile game player market, adds an ultrasonic sensor at the edge of the mobile phone, which brings the edge touch function to the mobile phone. In this way, it also brings users a control mode similar to the L1 / L2 and R1 / r2 keys in the handheld during the game, from the previous two finger control to four finger control, At the same time, the operation accuracy of touch control on the back screen of the fuselage is higher than that mentioned above.

In addition to the virtual key touch on both sides of the fuselage, the current ultrasonic technology can actually achieve all touch on both sides of the fuselage and the back of the fuselage. It is not even limited by the current user’s protection habits for mobile phones. For example, Xiantong technology, which provides edge touch technology for Rog mobile phones, said that the company’s ultrasonic technology can recognize operations even when users wear gloves and mobile phones use protective shells. In fact, the edge touch technology also has a lot of room to extend. For example, when taking pictures, it replaces the physical shutter key to help determine whether the user holds the mobile phone by hand, so as to intelligently adjust the key position.

In addition, mobile phone manufacturers have also begun to explore technologies that can achieve control without touching the body. Users can realize remote control or gesture control through pen and radar sensors to control the mobile phone in a new way. Then, the Huawei mate 30 series models released in September also added the AI space separation control function. Users can slide up and down, screen capture and other operations without touching the mobile phone, so that users can control the mobile phone with both hands when it is inconvenient to touch the mobile phone. For example, when cooking, they can look over the menu on the mobile phone while cooking ingredients.

Coincidentally, the pixel 4 mobile phone released by Google at the made by Google conference last week also added the soli radar sensor, and the recognition ability was upgraded from the previous infrared to millimeter wave signal, so as to realize the motion tracking with sub millimeter accuracy and the function of space separation operation. In the same way, it can slide the screen, switch songs and browse photos without touching the mobile phone.

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