LG Display continues to lead the way in large OLED technology by unveiling its fourth generation OLED TV panel. 33% brighter than the previous generation and optimized for the AI TV era, it is the industry’s first OLED display to achieve a peak brightness of 4,000 nits (1 nit is the brightness produced by a candle). Panels with both high brightness and high energy efficiency are essential for AI TVs, as they use upscaling that analyzes content in a timely manner to deliver ultra-high picture quality up to 8K.
The industry also considers higher brightness to be a key factor in image quality, as it provides more vivid images that resemble natural human vision. LG Display’s fourth-generation OLED TV panel meets the performance requirements of the most advanced AI TVs, interacting in a timely manner with the TV’s on-device AI to deliver a perfect picture in any environment. The new panel’s innovation centers around a tandem RGB primary structure, which is LG Display’s proprietary technology that uses independent stacks of RGB elements to produce light.
Previously, LG Display used a three-stage light source, with two layers of blue elements emitting relatively short wavelengths, as well as red, green and yellow elements in a single layer. The tandem RGB primary structure applied to the fourth generation OLED TV panel organizes the light source into four stacks by adding two layers of blue elements and independent layers of red and green elements. It improves maximum brightness by increasing the amount of light produced by each layer compared to the previous structure.
In addition to increasing the maximum brightness, LG Display has improved the color brightness of the latest generation of OLED panels. Color purity is improved by separating red, green and blue elements – the three primary colors of light – into separate layers, resulting in a color brightness of 2,100 nits, a 40% improvement over compared to the previous generation (1,500 nits). Additionally, energy efficiency has been maximized to account for the significantly higher power consumption expected for AI TVs.
By improving the structure and power supply system of the fourth generation OLED TV panel, LG Display reduced its temperature and achieved approximately 20% higher energy efficiency than the previous generation (in the case of a panel 65 inches). It also delivers a customer experience that pushes the boundaries of display with stunning image quality, perfect blacks and rich colors in any environment. In general, the color reproduction of a screen is affected by external light.
When the screen reflects ambient light in a bright room, blacks may appear gray or overlapping reflections from nearby objects may disrupt the viewing experience. For example, when watching content featuring a night sky in a living room during the day, any sense of immersion would be broken if the sky appeared hazy or reflections from furniture overlapped on the screen. To solve this problem, LG Display has developed a special film that compensates for both the light reflected from the screen surface and the light absorbed and reflected inside the panel.
With this ultra-low reflection technology, the company’s fourth-generation OLED TV panel blocks 99% of internal and external light reflections, achieving perfect black, like in a movie theater where the lights are turned off, even in a living room at midday (500 lux). The color gamut and accuracy of a display also decreases, dramatically, as the viewing environment becomes brighter. However, this TV panel sees virtually no change in color gamut and offers 100% color accuracy at 500 lux.
It is therefore the only screen to overcome the visual environment limitations of conventional screens. Furthermore, the fourth generation OLED TV panel offers differentiated value to the customer through human-friendly technologies, for example by emitting only 45% blue light, compared to 70-80% for an LCD screen. Blue light is known to have negative effects on users’ vision and circadian rhythm. The display further stands out for its sustainability by adopting environmentally friendly methods throughout the product life cycle, from development to mass production, including using more than 90% plastic raw materials in less than LCD screens and improving the recycling rate of end-of-life product parts to more than 92.7%.
LG Display will apply its fourth-generation OLED TV panel to its mass-produced high-end lineup this year, to consolidate its dominance in the high-end TV market. The company then plans to gradually apply its Primary RGB Tandem technology to its Gaming OLED range, targeting the high-end gaming market with a diverse range of panels. This range already includes the fastest monitor panel equipped with the highest response speed and refresh rate in the industry, which are important specifications for gaming monitors, as well as foldable panels that adjust their curvature depending on the content of the game.
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