The emergence of the mouse touchpad, while less versatile than the traditional mouse, still serves as a full-function alternative for users on the go. Even the third-generation touchpads can handle finger writing functions. However, it alone cannot satisfy people's desire to "return to simplicity."
Touchscreen is the foundation of the rotating screen notebook.
Friends who frequently read review articles may have noticed that around the end of 2006 and the beginning of 2007, many manufacturers began to promote laptops with a rotatable screen, which could lay the screen flat on the keyboard base to form what is commonly known as a tablet PC. In fact, the rotatable screen laptop is not a new thing. Remember when this unique concept of laptop manufacturing was proposed, it was enthusiastically endorsed by many manufacturers and symbolized the peak of technology and industrial design at the time. Even Bill Gates confidently predicted that "tablet PCs will replace traditional laptops within two years."
Input can be done as easily as writing on paper.
Despite earlier setbacks for the tablet due to various reasons, this design concept has led to the emergence of a superior product: the rotating screen laptop. It's worth noting that it's the adoption of touch technology that has actually brought both the original tablet and the current rotating screen laptop to their辉煌.
Principle of Single-Point Touch Screen Operation
The touch screen can be likened to a transparent mouse touchpad, yet, although it shares similarities with the previously mentioned mouse touchpad, there are certain differences in the technical implementation. Currently, touch LCD screens widely used in laptops are divided into two types: pressure-sensitive and electromagnetic induction.
Schematic Diagram of Capacitive Touch Screen
Pressure-sensitive touch screens, as the name implies, require a certain amount of pressure to be applied to the screen surface during use. The advantage of such screens is that they have minimal requirements for input devices. While using the included stylus offers better accuracy, the screen can still be used effectively with fingers or other devices.
Electromagnetic Induction Screen Schematic Diagram
A more advanced electromagnetic induction screen is technologically superior. Its operation requires pairing with the original stylus, which, due to its internal electromagnetic coil, can generate electrical signals by cutting through magnetic lines to drive the cursor movement. This drive can be completely contactless, meaning the stylus can hover over the screen. Of course, in practical applications, the stylus will still touch the screen at the contact point. However, unlike pressure-sensitive screens, handwriting on electromagnetic induction screens is smoother and more aesthetically pleasing, as it doesn't require pressing on the screen.