When purchasing a new smartphone, the display is the first thing a consumer notices. This is due to the fact that the display screen interacts with the program and performs different tasks. The display screen, on the other hand, has progressed to the point that humans can now create flexible displays.
In cell phones, there are a variety of display models to choose from.
1) TFT LCD – (Thin Film Transistor technology)
TFT LCDs are the most common type of display unit found in mobile devices, according to reports. As compared to earlier generation LCD displays, TFT LCD displays have better image quality and higher resolutions; however, visibility is low at narrow viewing angles and in direct light or sunlight.
2) IPS-LCD – (In-Place Switching)
IPS LCD displays are the next generation of TFT LCD displays, offering wider viewing angles and lower power consumption, resulting in significantly longer battery life. Since IPS-LCDs are more expensive than standard TFT LCDs, they are only found on higher-end smartphones. The Apple iPhone 4 has a higher resolution IPS LCD (640 x 960 pixels), which is known as Retina Display due to its excellent picture quality.
3) Capacitive Touchscreen LCD
A sheet of glass laced with a transparent conductor is used in capacitive touchscreen technology (like indium tin oxide). When a human body (finger) touches the screen, an interruption in the electrostatic field is produced (which is measurable as a shift in capacitance), which is identified by the phone's processor or chip, which then instructs the phone's operating system to cause an event or action.
4) OLED – (Organic Light Emitting Diode)
This is the most recent technology for cell phones and computer displays. In the case of OLED technology, organic material is sandwiched between two conducting sheets (anode and cathode), which are sandwiched between a glass top plate (seal) and a glass-bottom plate (substrate). Electro-luminescent light is emitted directly from the organic material sandwiched between the two conducting sheets when an electric pulse passes or is applied between them.
5) AMOLED – (Active-Matrix Organic Light-Emitting Diode)
AMOLED is a form of OLED display for mobile phones that is rapidly gaining popularity in the high-end smartphone market. AMOLED screens will show us a lot of things that we can't see on an OLED monitor, such as brilliant color reproduction, lightweight, long battery life, proper brightness, etc.
6) Super AMOLED displays
Samsung is the primary developer of Super AMOLED displays, which take over from AMOLED displays. Rather than having a separate touch-sensitive layer, Super AMOLED displays have touch sensors built into the display itself (as in capacitive touch screen). This makes it the world's thinnest display technology. Super AMOLED displays are currently only used in Samsung products, but the technology could be adopted by other manufacturers in the future.
7) Retina Display
Apple's high resolution (640 x 960 pixels) IPS LCD (with backlit LED) used in the iPhone4 is referred to as a Retina Display. It's called a Retina display because the pixels can't be recognized separately by the human eye, rendering it super bright and brilliant.
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