Do you know how many “screens” are actually in a touchscreen monitor or device? Depending on the device, the answer is likely two, with an additional layer of glass on top. In this article, we’ll explain the differences between a touch screen monitor and an LCD screen. But first, a brief history of touchscreen technology.
Touchscreen technology dates back to 1977 when the first prototype was developed by Ben Stumpe, a Danish electronics engineer. In 1982, multi-touch technology began to evolve thanks to the University of Toronto’s Input Research group. The university’s device used a glass panel with a camera behind the glass to record human-input. A few years later, in 1985, the University of Toronto continued their work, developing a multi-touch tablet that relied on capacitance rather than a bulky camera’s optical sensing systems.
Thanks to this early technology, touchscreens have become a staple in today’s world. Most smartphones, tablets and a large percentage of laptops rely on touchscreen technology. Most households will have at least one device that is equipped with a touchscreen, as users have grown to expect and rely upon the technology.
While touchscreens are increasingly becoming more common, one thing that many users don’t realize is that the screen you touch and the screen you see are not one-in-the-same.
Touchscreen: This is a thin, transparent layer of plastic, which is able to read and therefore, respond to touch. After reading the touch, it then transports the signal to the processing unit.
LCD Screen: This is the part of the device that lays inside the device and cannot be accessed without taking the device apart. The LCD screen is responsible for actually displaying the image.
A common occurrence among touch screen monitors and devices is a broken screen. When only the touchscreen breaks, you’ll still be able to see the displays on the screen and the phone should still function normally.
When the LCD screen breaks, you’ll still be able to touch the device, but the image will have dark spots or web-looking cracks across it. Sometimes both.
When both the LCD screen and the touchscreen are broken, you may still be able to use portions of the screen, and be able to see parts of the image. While you might still be able to use your device, it won’t work as it normally would and will present you with some difficulties during operation.