Tech: How does your phone's touchscreen work? What's the truth about electronic visual display technology?

Mobile Display Technology: Smartphones are in everyone's hands these days. Everyone carries a large-screen touch phone, but have you ever wondered how a phone's touch screen works? What is it that activates the moment we touch it? Many people believe that the screen is filled with a liquid substance that activates as soon as we touch it. What is its technology, and how does your phone work? Let's find out.

Actually, a mobile touch screen has an electronic visual display. Beneath this screen is a liquid crystal display (LCD). Beneath this screen is an electrically conductive layer, which is touch-sensitive. Electric waves flow through it, creating a wave when we touch it. These waves indicate where the screen has been touched. This information is transmitted to the controller through the phone's processor, and you see a response on the screen. This process happens so fast that the result is displayed as soon as you touch it.

How does the screen work?
In addition to touch, mobile screens also use similar technology. The liquid crystals in the screen act as a base for videos or photos. Text, images, or videos are displayed electronically on this screen. Thin liquid crystal molecules are located beneath the screen, which display images or videos using electrical waves.

What liquid is filled in the screen?
All phones with touchscreens are filled with a type of liquid called "twisted nematic liquid crystal." The special thing is that this liquid can polarize and rotate light. This is why the quality of videos and photos displayed on this screen is so good.

What are the advantages and disadvantages of touchscreens?
The advantage of touchscreens in smartphones is that they don't require buttons. This means you have the option of a larger screen instead of buttons. But, the worst thing about it is that this screen is not able to produce black or dark grey properly, and its contrast is a bit low.

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