What Are Some Pros and Cons of TFT Displays?

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LCD (liquid crystal displays) monitors are available in a variety of modern configurations. Perhaps the most high-tech version of LCDs to rise to prominence in recent decades is the TFT display. Read about the pros and cons of TFT display technology in this article, so that you can make an informed decision about whether or not this is a suitable option for your specific application and project needs.

Features of TFT Displays

TFT stands for thin-film transistor, which means that each pixel in the device has a thin-film transistor attached to it. Transistors are activated by electrical currents that make contact with the pixels to produce impeccable image quality on the screen. Here are some important features of TFT displays.

• Excellent Colour Display.Top notch colour contrast, clarity, and brightness settings that can be adjusted to accommodate specific application requirements.

• Extended Half-Life. TFT displays boast a much higher half-life than their LED counterparts and they also come in a variety of size configurations that can impact the device&#;s half-life depending on usage and other factors.

• TFT displays can have either resistive or capacitive touch panels.Resistive is usually the standard because it comes at a lower price point, but you can also opt for capacitive which is compatible with most modern smartphones and other devices.
  

• TFT displays offer exceptional aspect ratio control.Aspect ratio control contributes to better image clarity and quality by mapping out the number of pixels that are in the source image compared to the resolution pixels on the screen.

• Monitor ghosting doesn&#;t occur on TFT displays.This is when a moving image or object has blurry pixels following it across the screen, resembling a ghost.
• TFT displays are incredibly versatile.The offer a number of different interface options that are compatible with various devices and accommodate the technical capabilities of all users.

Types of TFT LCD Technology

There are two main types of TFT LCD displays:

• · Twisted nematic TFT LCDs are an older model. They have limited colour options and use 6 bits per each blue, red, and green channel.
• In-plane switching TFT LCDs are a newer model. Originally introduced in the s by Hitachi, in-plane switching TFT LCDs consist of moving liquid pixels that move in contrast or opposite the plane of the display, rather than alongside it.

Pros of TFT Displays

• Minimal energy consumption
• Sharp visibility
• Excellent physical design
• Fast and accurate response time
• Minimizes eye strain
• Space efficient design (can be placed anywhere in your workspace on a rotational mount so you can turn it in all directions)

Cons of TFT Displays

• Higher price point than other displays
• Disproportionate viewing angles
• Restricted utility due to glass paneling (e.g., ineffective for outdoor use where glass can showcase glares from natural lighting)
• Relies on backlighting to provide brightness rather than producing its own light, hence, they need built-in light emitting diodes (LEDs) in their backlighting structure

Factors to Consider when Selecting a TFT Display

The type of TFT LCD monitor or industrial display you choose to purchase will depend on the specifications of your application or project. Here are a few important factors to consider when selecting an appropriate TFT LCD display technology:

• Life expectancy/battery life.Depending on the length of ongoing use and the duration of your project, you&#;re going to want to choose a device that can last a long time while maintaining quality usage.
• Touch type and accuracy.What type of activities are you planning on using your device for? If it&#;s for extended outdoor use, then you should go with projected capacitive touch as this is more precise and accurate. Touch accuracy is important for industrial and commercial applications.
• Response times.TFT displays typically have faster and more accurate touch response times and performance.
• Image clarity.Some TFT displays feature infrared touchscreens, while others are layered. The former is preferable, especially in poor lighting conditions or for outdoor and industrial applications, because there&#;s no overlay and therefore no obstructions to light emittance.
• The environmental conditions make a difference in operation and image clarity. When choosing a TFT for outdoor or industrial applications, be sure to choose one that can withstand various environmental elements like dust, wind, moisture, dirt, and even sunlight.

As a leading manufacturer and distributor of high-quality digital displays in North America, Nauticomp Inc. can provide custom TFT LCD monitor solutions that are suitable for a multitude of industrial and commercial indoor and outdoor applications. Contact us today to learn more.

In this article, we explore the crucial parameters of LCD screens that you should know before approaching a manufacturer with your application idea &#; or even before an LDC TFT display as a component for your application.

But what are the parameters you can choose from when ordering an LCD-TFT display from a manufacturer?

An LCD-TFT display is among the most popular choices for visualizing information in a wide range of applications today. One reason behind the display&#;s popularity is the broad range of customization options that allow customers to choose an optimal mix of key parameters.

How does LCD-TFT display work?

LCD is an acronym for Liquid-crystal display. The name LCD refers to the liquid crystals that provide the core functionality of LCD screens. How do these crystals work exactly? It&#;s all down to the changes in light polarization achieved by manipulating the electric field to orient the liquid crystal particles the way we want.

And if we&#;re talking about LCD TFT displays, we need to explain TFT as well. TFT stands for the thin-film transistor, a type of transistor created by depositing thin films of semiconductors over a supporting substrate (which is nonconductive &#; in this case, it&#;s glass).

This technology offers a better quality of displayed content compared to passive-matrix solutions like STN (Super-Twisted Nematic). The images on the TFT-LCD display change swiftly thanks to the reduced response time achieved by the active matrix that maintains the liquid crystal state of matter between refreshing cycles.

5 key parameters of LCD-TFT screens you should know

1. Brightness

Also called luminance, brightness measures the luminous intensity of the screen when displaying a pure white image. Usually, brightness is given in the SI unit which is candela per square meter (cd/m2). However, you can also access brightness in nits (nt, 1nt = 1cd/m2).

The brightness of a typical monitor you use in your daily life is usually around 140-150 cd/m2. This offers optimal work comfort as long as you&#;re surrounded by proper ambient lighting. A brightness of 250 to 300 cd/m2 might cause eye strain and impact work efficiency.

Did you know that some best-in-class smartphones come with brightness estimated as high as 700 cd/m2? This is necessary because brightness provides better readability of the content presented on a smartphone screen in intensely lit spaces. The same goes for applications such as passenger information systems or displays used in public service vehicles or shopping malls. Such applications require around 700 cd/m2 brightness.

And what about displays used in outdoor devices? For example, glass storefronts on the street? In this case, applications may require even cd/m2. Litemax is an acclaimed producer of high-brightness.

For more tft meter displayinformation, please contact us. We will provide professional answers.

2. Resolution

It&#;s impossible to talk about display resolution without knowing what a pixel is. The pixel is the smallest controllable element of a picture that is displayed on the screen. It consists of three subpixels that carry the colors red, green, and blue. Together, they represent the RGB color model.

By manipulating the light transmitted through subpixels properly, we can generate the pixel&#;s color tones. And every pixel color can be easily adjusted independently.

In applications of the highest quality, it&#;s essential that users don&#;t see pixels with their own eyes. If you can see them, it means that the display has too few pixels.

And this is what resolution is all about. It defines the number of pixels visible on the screen. Usually, the resolution is expressed as a number of horizontal and vertical pixels. For example, take the popular resolution of ×720 pixels. This means that there are horizontal pixels and 720 vertical pixels.

Some other common resolutions are:

• Full HD &#; × pixels
• 4K &#; × pixels
• 8K &#; × pixels (the highest resolution available to the general public).

High resolution is a crucial parameter for retail applications &#; for example, displays used in storefronts like video walls. Information carriers used in public utility buildings like government offices often require high-resolution displays as well.

3. Contrast

Contrast is a parameter that defines the ratio of light intensity between the brightest and the darkest points on the display. The content presented on the display with high contrast and optimal brightness will be readable and clear.

We can achieve high contrast by deepening the black color, for example. Increasing the display&#;s brightness isn&#;t going to have any impact on the contrast ratio. Furthermore, display manufacturers improve contrast by developing some other LCD-TFT functionalities such as local dimming (selective backlighting).

4. Operating temperature

This parameter is crucial for outdoor applications. Note that displays in solutions used in outdoor environments can be exposed to both high temperatures and frost. If a device is located in a sunny spot and in conditions where a surface might heat up to even 100°C, the proper functioning of the displays might be disturbed. That&#;s because the liquid crystals that make the LCD-TFT might boil.

However, if your application will be used in such contexts, there are solutions on the market that make it work. They extend the operating temperature range and use the hiTni technology to prevent the liquid crystals from boiling.

5. Viewing direction

The final aspect to consider is the accessibility and readability of displayed content. This is particularly true in transportation applications and information carriers used in digital signage applications. Choose solutions offering the fullest viewing angles for such devices. The optimal option here is 89°/89°/89°/89°.

However, not every project will require a display with such high viewing parameters. For example, if your design will have a screen located below the line of sight (for example, in home appliances), you can use the matrix with a 12 o&#;clock viewing angle. And if the users of your application will be looking at the screen from below, a matrix with a 6 o&#;clock viewing angle will be enough.

Choosing a slightly more narrow viewing direction is an excellent measure for optimizing the final cost of your application.

Get high-quality LCD-TFT displays with parameters that match your needs

It&#;s essential that you consider these parameters while looking for a display for your application. By analyzing your application&#;s requirements, you can analyze these parameters and equip your device with a display that offers perfect readability in its environment.

If you have any further questions about LCD-TFT displays, don&#;t hesitate to get in touch with us.

At Melrose, we have delivered countless LCD-TFT displays matching even the strictest environments and know how to cherry-pick parameters to deliver a product that suits your unique requirements.

If you want to learn more, please visit our website tft display vs ips.