Views: 233 Author: Reshine Display Publish Time: 2023-11-02 Origin: Site
TFT LCD is an established technology. OLED is a relatively new display technology that is being used in an increasing number of applications. Micro LED, on the other hand, is a new generation technology with a bright future. The following are the advantages and disadvantages of each display technology.
TFT Liquid Crystal Display is now widely used. Because LCD does not emit light. TFT LCD displays content using a white LED backlight. This is a description of how a TFT LCD works.
Pros
LCD is a mature technology with a low cost and a long lifespan. It has a longer lifespan when compared to OLED.
There is no stroboscopic effect because the LCD uses a DC power white LED backlight. This will not result in a stroboscopic effect.
Pixel density is high: TFT LCD produces sharper images than OLED at the same resolution.
Cons
TFT LCD requires a backlight, which consumes a lot of power. As a result, it is thicker and consumes more power.
Generally lower contrast: LCD glasses, liquid crystal layers, polarizers, and color filters must all be used to allow light to pass through. More than 90% is lost. Furthermore, LCD cannot display complete black.
An organic light-emitting diode (OLED) is constructed from an electroluminescent layer containing organic compounds that emit light in response to an electric current. OLED is classified into two types: passive matrix OLED (PMOLED) and active matrix OLED (AMOLED). These driving methods are similar to those used in LCD displays. PMOLED is controlled sequentially via a matrix addressing scheme, requiring m + n control signals to address a m x n display. AMOLED employs a TFT backplane that allows individual pixels to be turned on and off.
Pros
OLED is thinner and lighter than LCD due to its light-emitting property.
Low power consumption and flexibility: Because OLED does not use a backlight, it consumes less power. OLED is made primarily of plastic film. It is malleable and simple to work with.
High contrast and vibrant color: Because OLED emits light, it can produce very bright images with beautiful color. OLED can also produce true black because it can be turned off.
LED switching is faster than liquid crystal twisting, and OLED response time is faster than LCD.
Cons
OLED may suffer from image retention (burn-in). It is the gradual deterioration of pixels caused by displaying static images for an extended period of time.
The majority of OLED screens use PWM dimming technology, which produces a stroboscopic effect. Some people who are sensitive to stroboscopic frequency may experience sore eyes and tears.
Blue light emitting organic materials have a shorter lifetime. As a result, OLED color shifts and has a shorter lifespan.
Micro LED, also known as LED, is made up of tiny LEDs that are less than 100m in length. Another way to look at it is that MicroLEDs are simply traditional LEDs that have been shrunk down and arranged in an array.
Pros
Micro LED has a very fast response time, high brightness, a wide viewing angle, and a long lifespan when compared to TFT LCD and OLED.
By replacing organic material with inorganic GaN material, the need for polarizing and encapsulation layers, which are present in OLED, is eliminated. Micro LEDs are smaller, thinner, and use less power.
Cons
Expensive: Micro LED is a new technology that is costly to produce.
Difficult to manufacture: As with all new technologies, manufacturing Micro LED is currently fraught with difficulties.
There are a few questions to ask and factors to consider when selecting the right TFT LCD module for your application. From size and brightness to operating environment, technology, and interface, these are fundamentals.
For the vast majority of projects, size is the starting point. Outline dimension and active area are the two sizes to consider. The outline dimension specifies how much space the LCD module will occupy within a product. The active area is related to the finished product's display window.
Brightness, viewing angle, and contrast are also important considerations that are influenced by the environment in which your product will be used as well as how it will be used. There are numerous variations in these parameters, each with a different display technology. The fundamentals are governed by TN, STN, Reflective, and IPS, but optical enhancements such as circular polarizers, O-film, and anti-reflective coating, among others, also play a role.
Brightness levels are available in a variety of ranges and sizes. There are technical options available to extend product life and reduce power consumption. LED is used as a backlight in all of Topway's TFT LCD modules.
The viewing angle is determined by the type of LCD, but there are options available, such as contrast enhancement mechanisms with IPS technology that provide 180-degree viewing capability. A short video demonstrating Topway's 180-degree viewing angle TFT LCD modules is provided below.
Contrast Ratio - the most important factor in terms of optical performance, and where the majority of losses occur in high ambient light conditions. There are numerous mechanisms available to manage this parameter, ranging from internal timing control (TMR) to surface coatings such as AR (anti-reflection and optical bonding for outdoor conditions).
The three characteristics listed above are inextricably linked, and there are numerous enhancements available to suit various environments and applications.
TFT displays are available with a variety of interfaces, including HDMI, RGB, LVDS, MIPI, SPI, RS232, and Parallel MCU. The resources you have on your application will determine which of these you use, as they each place different demands on time and system requirements. Here's an overview of interfaces and their options.
Temperature - The temperature range of an LCD module is based on some basic science. Which necessitates meticulous management in order to achieve the best lifetime performance. Most Topway LCD panels have operating temperatures ranging from -20/-30 to +70/+80 degrees. There are also techniques and mechanisms for improving such performance.
Surface Coating, Touch Screen, Cover Len, and Optical Bonding - With more products being used outdoors, displacement enhancement has become a major factor in today's market. Intelligent user interfaces and touch functions are required for most new designs in the world of tablets and smartphones. As a result, the option and availability of these enhancements have become much easier and more cost-effective. Whatever the need, there is now a simple and cost-effective solution.
If you have any TFT LCD-related questions, please send us a message; we are happy to discuss any LCD topic with you.
