What is an OLED display?

Discover the fascinating world of OLED displays - learn about their unique advantages over LED screens, the potential drawbacks, and the different types of OLED technology.

Aug 5, 2023 - 22:37
Aug 5, 2023 - 22:39
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What is an OLED display?
What is an OLED display?

OLED displays are electronic visual panels that harness organic light-emitting diodes (which, of course, is what the acronym OLED stands for) for their core illumination power. OLED is a type of electroluminescent display technology, in which an organic material layer generates light when molecules in the diode are agitated by an electric current. As with many other display types, an OLED array can be used to present images, text, video and more on a screen or panel of almost any size, and the technology has been especially prevalent on the high-end home entertainment market over the past few years. Thanks to the unique strengths they deliver in terms of power and performance, OLED screens are also in increasingly widespread use as performance display tools across all industries and sectors today. In this guide, we’ll look more closely at exactly how OLED panels function, what the main strengths of the technology are when compared with more entry-level alternatives, and some of the brands whose products are currently excelling in a range of professional and industrial display settings.

OLED vs LED - Advantages and Disadvantages

Due to the fundamental difference in how OLED technology works, it offers some striking and unique characteristics when compared to the standard LED displays we’ve seen in previous years. In this section, we’ll outline a few of the headline strengths and weaknesses of OLED displays as a newer, more cutting-edge update to the older (though still high-performing and very popular) LED standard.

Higher contrast ratio. Because OLEDs emit their light directly to screen, a given grouping of pixels can effectively be completely shut off when instructed to display dark areas. In this state they emit no light at all, resulting in a clear and obvious perception of very deep, rich blacks and tonal shades.

Most LCD types - including standard LED panels - can’t manage such impressive contrast ratios, as their version of ‘black’ has to be achieved by simply masking the LED display backlighting to whatever extent is possible.

Under these conditions, there’s almost always some degree of backlight bleed from LED displays, and as a result, their blacks are far less deep and crisp.
Wider viewing angles. Again, this is because OLEDs are located much closer to the surface and emit their light directly to the screen, without having to pass through a liquid crystal layer as you’d find on standard LED displays.

The LCD layer causes a degree of refraction that can have odd effects when viewing a standard LED panel from more acute angles.
Higher quality LED panels, such as those that use In-Plane Switching (IPS) technology, can mitigate this to an extent - but cheaper versions such as Twisted Nematic (TN) screens are still common, and do suffer greatly in this area.

Quicker response times. Display ‘response times’ refer to the length of time it takes a given pixel to switch between on and off states in response to an input signal.
As outlined above, current OLED displays are able to do this in a blink, and can, therefore, boast far better response times than LED/LCD panels - as low as 1 millisecond, in fact.
This makes OLEDs the clear winners when it comes to displaying images in rapid motion, with much less noticeable artifacting. LEDs struggle in this regard, due in part to every single diode having to illuminate multiple pixels behind an LCD layer.

Advantages of OLED displays include:

OLED technology, short for Organic Light-Emitting Diode, is a type of display technology that uses organic materials to generate light. When an electric current is applied, these organic molecules emit light, creating images and colors directly on the screen. OLED displays have become popular due to their unique characteristics and advantages compared to traditional LED displays.

Advantages of OLED displays include:

  1. Higher contrast ratio: OLEDs can completely turn off pixels to display true blacks, resulting in deep, rich black levels and excellent tonal shades. LED displays, on the other hand, rely on backlighting, which can cause backlight bleed and less impressive black levels.

  2. Wider viewing angles: OLEDs emit light directly to the screen, without passing through a liquid crystal layer like in LED displays. As a result, OLEDs offer wider viewing angles and avoid odd visual effects from acute angles that can occur in some LED panels.

  3. Quicker response times: OLED pixels can switch between on and off states rapidly, boasting response times as low as 1 millisecond. This makes OLED displays better at handling rapid motion images with minimal artifacting compared to LED/LCD panels.

Disadvantages of OLED displays include:

  1. Shorter lifespan: The organic materials used in OLEDs have a limited lifespan compared to LCD displays, which can affect the longevity of the screen.

  2. Lower brightness: While OLEDs have superior contrast ratios, their overall brightness level (measured in 'nits') can be lower due to the nature of organic molecules. In bright outdoor conditions, OLEDs might appear washed out and struggle with accurate color reproduction.

  3. Higher power consumption: OLED displays can consume more power than equivalent LCD displays, especially when showing bright images. This can lead to increased power consumption in certain usage scenarios.

  4. Possibility of burn-in: OLED displays may experience burn-in over time if certain pixels are overused, resulting in a ghost image permanently displayed on the screen.

Types of OLED: There are primarily two types of OLED displays based on their structure:

  1. AMOLED (Active Matrix OLED): This type of OLED incorporates a thin-film transistor (TFT) for each pixel, allowing precise control and faster response times. AMOLED displays are commonly used in smartphones and high-end televisions.

  2. PMOLED (Passive Matrix OLED): PMOLED displays use a simpler addressing scheme with no integrated transistors per pixel. They are often found in smaller devices like wearable gadgets and small electronic displays.

Both AMOLED and PMOLED technologies offer their own advantages and are suitable for different applications based on size, power requirements, and performance needs.

OLED Display Manufacturers: RG DISPLAY

Rajguru Electronics (I) Pvt Ltd, located on Lamington Road in Mumbai, is one of the prominent OLED display manufacturers. With a reputation for excellence in the industry, they specialize in producing high-quality OLED Displays for various applications. Their cutting-edge technology and dedication to innovation have made them a preferred choice for clients seeking reliable and advanced OLED displays. Rajguru Electronics caters to a diverse range of requirements. With a commitment to delivering top-notch products, they continue to play a vital role in shaping the OLED display market.

Buy OLED DISPLAY from: Rajguru Electronics (I) Pvt Ltd