A smartphone's tiny screen relies on the strange properties of liquid crystals. Check out Groupon's study of LCDs to learn how they create the vivid pictures in your pocket.
Liquid Crystals and LCDs: How Cell Phones Resemble Carrots
The term liquid crystal seems a contradiction, but a liquid crystal is actually neither a liquid nor a solid?it's both, stuck in a sort of chemical limbo with its molecules somewhere between the liquid and solid phases. When an electrical current passes through a liquid crystal, its molecular orientation changes, and so does the direction of light that passes through it. By sandwiching these crystals between polarized glass and manipulating the current passing through them, your phone is able to control the light they channel, resulting in the high-contrast images that appear on screen. Although our brains only see each pixel as a single dot, each consists of red, blue, and green subpixels that, when lit at various intensities, can emit more than 16 million colors.
Despite their advanced applications, liquid crystals are not a recent discovery. They were first identified in the late 19th century by a scientist studying cholesterol extracted from carrots?a natural source of liquid crystals, as are human beings and most other living things, which tend to have them in their cell membranes. Liquid crystals and LCDs were the subject of research and patent applications throughout the early 20th century?including one filed by Marconi?s Wireless Telegraph Company in 1936?and finally hit consumer electronics in the early 1970s, when they were introduced in wristwatches.
Of all mankind's magnificent inventions, the touchscreen of a smartphone or tablet is perhaps the most important interface of the modern age. In just a swipe or tap of a finger, we can send messages across the globe, hurl agitated birds at pigs, make 6-second videos of breakdancing cats, and occasionally call parents. That's why when they break, it's more than a technological snafu. It's a moment of primal panic that sends us squinting through shards in maddened attempts to stay in touch.?
Like a doctor whistling in a delivery room, Cell-Tech's specialists dispel anxiety with speedy rehabilitations of dilapidated touch-screens. Operating on a range of the most popular models?including iPhone and Android phones, tablets, and phablets?the experts turn turmoil into triumph. They restore screens to their optimal shine and swipeability, and spare owners the agonizing wait (and agonizing costs) of replacing their devices. Cell-Tech's gizmologists can even restore faulty charging portals, saving folks the hassle of charging their phone by sending it up with a kite during electrical storms.
Dr. Cell Phone revives technological investments with original replacement parts and quick turnaround time (usually ranging between 30 minutes to one day). Cell-phone and computer specialists fluent in Apple, Samsung, and mobile products by many other major cell-phone manufacturers repair cracked screens, casing damage, and malfunctioning keys. They also install glass screens and LCD components as well as digitizer components for tablets. An array of accessories are also available. Technologically advanced in their own right, Dr. Cell Phone?s specialists bestow customers with a repair-order number to check in on their electronic pets, as well as a 90-day warranty on all labor, parts, and scratch-n-sniff upgrades.
When a screen cracks, a tablet gets wet, or a laptop turns back into a pumpkin, the technicians of Gadget MD swoop in to save the day. Backing all their work with a six-month guarantee, and often available for same-day service, the team is adept at returning doohickeys to their functioning, good-looking selves. Apple fans are especially enamored of the Gadget crew, who effortlessly renovate all manner of Mac devices.