We have been publishing a series to assist people comprehend the specs as well as different elements of smartphones. Today, we’ll be discussing all the elements of smartphone screen as well as touchscreen. The smart phone screen has evolved much over the years. though the very first touchscreen mobile, IBM Simon, was released method back in 1992, the innovation stayed largely unnoticed up until 2007, when Apple released the iPhone.

Rapid gain in popularity as well as decrease in producing costs resulted in fantastic advancements in technology, making smartphone screen as well as touchscreens thin, durable, precise as well as fast. likewise improving in parallel is the screen quality. Today’s smartphones render stunning life-like pictures by packing in tinier as well as tinier pixels in the screen as well as coupling it with quicker GPUs.

Typical screen description of a smartphone will contain the complying with information. Let’s inspect out all the kinds of smartphone screen as well as touchscreen:

Display type

Touchscreen Type

Display size

Screen resolution

Protective coverings

For example, let us take the Huawei mate 8:

Type: IPS-NEO LCD capacitive touchscreen, 16M colors

Size: 6.0 inches (~78.0% screen-to-body ratio)

Resolution: 1080 x 1920 pixels (~368 PPI pixel density)

Multi-touch: Yes

Protection: Corning Gorilla Glass 4

Let us think about these terms one at a time:

Touchscreen type

There are two major kinds of touchscreens-

Resistive

This type is extensively utilized in ATMs, restaurants, factories, etc. A major advantage is that since these screens respond only to pressure, they can be operated by a stylus or a gloved hand. However, this innovation is not prominent in the cellphone industry, as the glass utilized is as well thick to offer a great screen contrast. Also, since the outer layer of glass is made to touch the inner layer, cracks as well as dead areas are common. only a handful of dated phones have resistive screens. These include the Sony Ericsson Xperia x1 & x2, Nokia 5800 XpressMusic, as well as Samsung Jet.

Must Read: Understanding Smartphone Specs: The SoC (System on a chip)

Projected Capacitive (Pro-Cap)

Almost all contemporary smartphones utilize capacitive touchscreens. This innovation uses the natural electrical conductance of the human body. It can even be programmed to spot several touches. These screens are more durable; as well as is thin sufficient to enable most of the light from the screen to pass through. Some manufacturers reduce the screen thickness even further by doing either of the following:

Incorporating the touchscreen in the screen panel itself (super AMOLED), or

Incorporating the touchscreen on the protective glass covering.

One major drawback of capacitive screens is its inability to spot touches from insulated material, like a gloved hand.

Smartphone screen type

There are two major screen types offered in the market: LCD as well as AMOLED.

LCD (Liquid Crystal Display)

A fundamental structure of LCD is shown below. It suffices to understand that there are two kinds of LCDs in the market:

Twisted Nematic thin film Transistor (TN TFT) LCD: This type has lost popularity throughout the years because of bad viewing angles as well as less contrast. Samsung Galaxy J5 Prime, introduced last September, features a TFT display.

In-Plane changing (IPS) LCD: This is the most prominent LCD screen, with much better contrast, wider viewing angles (compared to TFT) as well as increased power efficiency.

AMOLED screen (Active Matrix organic Light Emitting Diode)

Unlike LCD screen, each pixel is a combination of three to five LEDs (subpixels), which illuminate individually to create different colors. As there is no back-light, these screens create deeper blacks as well as offer much better contrast. The screen likewise includes fewer layers, reducing the ‘depth’ of the display.

A comparison between the two screen types is provided below:

Feature

LCD

AMOLED

Color production (gamut)
less
more

Colour reproduction
more
less

Lifespan
more
less

Battery efficiency
less
more

Viewing angle
narrow
wide

Contrast
less
more

Cost
cheaper
expensive

Smartphone screen quality

Image high quality depends upon different factors, including the screen type, the GPU, brightness as well as contrast offered, the glass covering the display, glare filters as well as even the screen protector you pasted over the screen. However, smartphone business have decided to promote on only one factor: screen resolution. The reason behind it is simple, the resolution is an objective quantity, as well as is easier to explain than glass types, polarized filters, hardware modifications, etc. Nevertheless, the resolution is the most important factor determining screen quality.

So what is a screen resolution? It is the number of pixels on the screen in both axes, provided in this format: the numbernull