After Samsung Electronics and Apple released their new mobile phones with 18.5:9 and 19.5:9 aspect ratios last year, most smartphone brands followed suit, keeping up with product differences by applying a wider screen to their 2018 product lineup. Sexual rhythm. Advances in display technology add to the popularity of higher aspect ratios in smartphones. Initially, flexible active matrix organic light emitting diode (AMOLED) technology was needed to achieve full screen display, so originally expected 18:9 or higher aspect ratio Mainly used in top and high-end smartphones in 2018. However, with the rapid advancement of liquid crystal display (LCD) Cell structures, thin film transistor (TFT) arrays and light-emitting diode (LED) backlights, TFT-LCDs can now also be used. For full-screen smartphones. 'With the advancement of TFT-LCD technology, smartphone manufacturers are now actively applying 18:9 aspect ratio TFT-LCDs to 2018 mid-range and even entry-level smartphones. Not using expensive flexible AMOLED panels. 'IHS Markit Senior Director Hiroshi Hayase said. Hayase further explained that 'smartphone displays are entering a fast-changing period, turning to the base