From simple black and white digital displays, to color TFT screens, and then to touch screens, the trend of disposable e-cigarettes is becoming increasingly fierce. It is reported that recently, the e-cigarette brand Rebbeats has launched its first disposable touchscreen e-cigarette in the United States.
This product has gained attention because it is the first publicly reported disposable electronic cigarette with a touch screen. The application of touch screens in electronic cigarettes can be traced back to a large cigarette product launched in 2015. To this day, touch screens for large cigarettes are also very common. As for Xiaoyan, touch screens are used for battery swapping products, and related products were launched around 2019.
The recently popular LED display product, EPE AP15000, has become very popular since its launch. Another ELF BOX Digital 12000 has also received high praise in multiple European countries.Especially the taste is good and the cost-effectiveness is very high.
Introduction and working principle of touch screen
At present, most touch screens used in consumer electronics products are capacitive, while the resistive screens used in early mobile phones have been phased out for a long time due to scratches and other issues.
The concept of touch technology has been proposed since the 1940s, and the first true touch screen was manufactured by Eric Arthur Johnson, an engineer from the Royal Radar Company in the UK, in 1965.
Johnson initially described his achievement in an article published in Electronics Letters, which is now known as a capacitive touch screen.
A capacitive touch screen works by utilizing the human body's current induction. A simple capacitive screen is a four layer composite glass panel with layers of ITO material. ITO is an indium tin oxide material that is transparent and conductive, suitable for manufacturing touch screens.
Its working principle is that when a finger contacts a certain part of the screen, it will form a coupling capacitance with ITO material, changing the capacitance size at the contact point. The four corners of the screen will have wires, and since AC power can pass through capacitors, the current from the four wires will flow towards the contacts, and the magnitude of the current depends on the distance to the contacts. The chip inside the phone can analyze the current at the four corners and calculate the position of the contacts.
In terms of applications, capacitive touch screens are still mainly used in the smartphone market. But in applications other than mobile phones, such as automotive electronics, retail, healthcare, public facilities, leisure and entertainment, the market share of capacitive touch screens is gradually increasing.