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Copy of FOLDING PHONES C.pptx.pdf

  1. 1. ‘Foldable SmartPhones’, a technology which was a dream for everybody. The whole concept of foldable screens was unrealistic until recently. The phones we use today are made of hard glass or gorilla glass as we call it which cannot bend at all. So to make the phone foldable, they had to come up with new material for the screen which will be flexible but it shouldn’t break in half. Abstract
  2. 2. The first-ever foldable phone was launched on the 31st October 2018. It was from a company called Royale and they called the phone the Royole Flexpai. This was the company that beat all the other smartphone companies in folding technology. Introduction
  3. 3. However, the phone had multiple malfunctions even though it ran the latest snapdragon processor at that time. The phone had a lot of false touches, wasn’t pocket-friendly, hardly practical and the user interface was terrible. A few months later, both Samsung and Huawei released their foldable phones named as the Galaxy Fold and the Mate X. Both these phones were better than the Flexpai in every aspect. However, none of them made it through alpha testing before they were released to the public.
  4. 4. Need for Foldable Phones to Evolve The Bigger screens mean that the mobile device itself must get bigger. That's why major players are working on a different way to make the display larger without jumbo-sizing the entire device. Basically, they have been working to create something that effortlessly folds open like a book.
  5. 5. How Do Foldable Smartphone Screens Work? The idea of a foldable screen is hard to believe because smartphone screens are typically made of multiple layers of—mostly inflexible— glass. However, foldable screens are now possible because of a not-so-new technology, often referred to as Flexible Display technology, built around Organic Light Emitting Diode (OLED) screens.
  6. 6. These screens do not require backlit lights for working, making screens more thin and flexible and also they generate more accurate colors and have a large color gamut, .
  7. 7. . Flexible displays can found in old smartphones like -- iphone X and the Samsung Galaxy Edge series. This technology has now evolved a lot and has grown from just allowing screens to have curved edges into making screens that can be actually folded.
  8. 8. What materials are used to make foldable displays?
  9. 9. On February 11th, 2020, Samsung made what it called “a leap from polymer screens to ultra-thin glass technology” when it released its Galaxy Z Flip, the first foldable smartphone that features an actual glass screen. The Samsung Galaxy Z Flip still has a soft, scratchable plastic layer on top. However, the main component, that is, the display, is made of glass.
  10. 10. A closer look at how folding screens work
  11. 11. Substrate layer — Also called the board, this is the very base of the screen, which supports all the other layers. On a flexible display, the substrate is made of plastic or, less commonly, metal. Most flexible screen devices today use a substrate made of a polymer plastic called polyimide (PI). In addition to being flexible and insulating, polyimide features h igh mechanical strength and thermal stability. TFT layer — Applied on top of the flexible substrate, the TFT (thin-film transistor) layer controls power delivery to each pixel. Think of it as a “power grid” that connects all the pixels in the display. On an OLED screen, unlike on LCD, each pixel can be controlled individually, allowing for high contrast rates and lower power consumption.
  12. 12. OLED layer — The light-emitting layer, made up of individual pixels, each of which comprises red, green, and blue subpixels. Each pixel can hit a certain color and luminosity by varying the amount of power its subpixels receive. In turn, pixels combine to form the image we see on the display. The OLED layer is made of several sub- layers, including a cathode, an anode, and a layer of organic light-emitting material sandwiched between them. Cover layer — Also called the encapsulation layer, this is the layer that seals and protects the other layers. It’s also the layer users touch when they interact with folding screens. In terms of materials, the cheaper option is polyimide (same as the substrate), while more recently, we’ve seen manufacturers adopt ultra-thin glass (UTG).
  13. 13. Advantages of Foldable Smartphone Screens Portable Large Screens
  14. 14. Multitasking Productivity .
  15. 15. Disadvantages of Foldable Smartphone Screens Cost Reliability Bulkiness
  16. 16. Conclusion: Is A Foldable Smartphone Worth It? Right now, the perks of owning a foldable phone don’t really outweigh the drawbacks, given the high price we need to pay for one. But that’s not going to be the case in just a few years. The proper utilisation of foldable technology is just getting started, and there are many reasons to be excited about its future. So while folding phones don’t currently fit in as the perfect device for most users, with enough improvements within the next few years, they hold the potential to be a stepping stone to something much better: a single device for all occasions and circumstances, while still fitting in our pockets.

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