Summary
Local Dimming Technologies on TVs.. Regular LED-LCD televisions do not have the advantage of being able to turn off individual pixels like OLED televisions can. This is the case until you upgrade to a microLED, which can be purchased for tens of thousands of dollars. Unfortunately, as a consequence of this, LED televisions are unable to attain the same very deep and inky black depths that the greatest OLED televisions have to offer.
Local Dimming Technologies on TVs
However, there are techniques to circumvent this, to the point that some LED televisions are getting close to the dark levels of OLED televisions. How is it? by means of local dimming. Local dimming has made it possible for LED televisions to compete with and even surpass the visual quality of OLED televisions.
What are your thoughts on local dimming and how it affects the image quality of the television you want to purchase? Everything that you need to know is included here.
What does “local dimming” mean?
The purpose of local dimming is to achieve the goal of producing black levels that are more profound and darker, while at the same time preserving the high level of brightness that LED televisions are traditionally renowned for.
Through the use of local dimming, the single, huge backlight that is present in an LED is effectively eliminated. Local dimming, on the other hand, makes use of many backlights and turns them on and off based on the items that are included inside the picture. What is the end result? If a picture is gloomy and contains a lot of black, the television has the ability to turn off areas of the backlight in order to improve contrast.
However, there is a little bit more to it than that, and there are a variety of various local dimming methods that may result in an overall better picture.
What is the operation of edge-lit televisions?
As the name indicates, edge-lit televisions are created by placing LEDs along the edges of a television. These light-emitting diodes (LEDs) are illuminated by color filters and other technologies, and they are oriented inward toward the center of a television set.
It is possible for edge-lit televisions to provide a local dimming effect by turning on certain LEDs and turning off others. This effect is dependent on the number of LEDs that are located around the television. Nevertheless, the most significant drawback of edge-lit televisions is that the backlighting is not particularly consistent throughout the screen. The majority of the time, they are only capable of producing a dark gray color rather than the genuine color black. In addition to this, the backlighting of a display becomes less uniform as one moves closer to the center of the display. This is because less light is able to reach the pixels in the display.
Nevertheless, this is something that is only evident in settings that are gloomy. It is quite unlikely that you would detect a significant variation in the uniformity of the backlighting in scenarios that are lighter. Therefore, edge-lit televisions like the Samsung CU7000, Samsung CU8000, and LG UR9000 provide a reliable and affordable alternative to some of the other local dimming technologies that are more expensive.
With full-array local dimming, what are the advantages?
Full-array local dimming has been more popular over the last several years as a method to ensure that a picture is illuminated in a more consistent manner and to get greater control over the backlighting.
TVs that have full-array dot LEDs across the whole back of the TV are advantageous because they eliminate the need to place LEDs around the edge of a picture. Electronic light-emitting diodes (LEDs) are organized in a grid and may be regulated individually. Because of this, the final product is a picture that has much darker blacks. According to full-array local dimming, the television has the capability to turn off the LED or LEDs in that region, often known as those “zones,” whenever there is a black area in an image.
The number of zones that a television provides as part of its local dimming capacity is increasing at an ever-increasing rate, which enables the backlighting control to become ever more precise. Only a few years ago, it was more typical to acquire up to one hundred or so dimming zones; however, these days, it is common to find several thousand zones on most televisions that fall into the middle price range.
Televisions that are equipped with mini-LED and micro-LED displays are, of course, the logical progression of this technology. The backlights of mini-LED televisions are typically quite small, measuring between 0.004 and 0.008 inches in diameter. There are thousands of these backlights included inside a mini-LED TV, which enables the backlighting to be controlled with a high degree of precision.
On the other hand, micro-LED televisions are considered to be a little different beast. As a result of the fact that micro-LEDs generate light on their own, there is no need for a backlight. These micro-LEDs are regulated on a per-pixel basis, similar to how OLED displays are managed.
Numerous televisions in today’s market make use of the local dimming feature. There are a few examples of products that include mini-LED backlighting, such as the Hisense U8K and the more recent Hisense U8N, as well as the TCL QM8.
