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led vs. lcd tvs explained: which is better, and why?
Although there are many types of TV, led TV and LCD TV are two terms that often appear.
But what\'s the difference?
It\'s a problem we hear a lot from the fledgling home theater shoppers, but it shouldn\'t.
Abbreviation of blame.
Here\'s a simple answer: The led TV is an LCD TV, but it can be a big surprise how the two are confused.
Once you have a better understanding of LED and LCD TVs, please check our list for suggestions on our favorite currently available TVs.
Although the led TV has different initials acronym words, it is just a different type of LCD TV.
The correct name is actually \"LED-
Backlight LCD TVs, \"but it\'s too hard for everyday conversations, so people usually call them LED TVs.
Both types of TVs use LCD monitors (LCD)
The panel that controls the position of the light display on the screen.
These panels are usually made up of two polarized materials, and there is a liquid crystal solution between them, so when the current passes through the liquid, it causes the crystal to align so that the light can (or can’t)pass through.
Use each crystal as a shutter to let the light pass through or block it.
Now, since both LED and LCD TVs use LCD technology, you might want to know what the difference is between the two.
In fact, what is the difference between it.
The LCD TV you think of now is no longer there.
The reason is: backlight.
Cold cathode fluorescent lamps for old LCD TVs (CCFLs)
Led TV uses a series of smaller, more efficient LEDs (LEDs)
This gives them some advantages.
Now all LCD TVs use LED lights and are generally considered LED TVs.
How this works.
There are three different forms of lighting used in LCD TVs: CCFL backlight, Full Array LED backlight, and LED lighting.
These lighting technologies are different in important aspects, each with advantages and disadvantages.
Let\'s go deep into each.
The CCFL backlight is an old form of technology and most of it has been abandoned, although some manufacturers do use the CCFL in lower-level LCD because of their low manufacturing costs.
A series of CCFLs sit on the inside of the TV behind the LCD screen.
These lights illuminate the crystals fairly evenly, meaning that all areas of the picture have similar levels of brightness.
This affects some aspects of the quality of the pictures we discuss on the next page.
Since the CCFL is larger than the LED array, the ccfl LCD tends to be thicker than the LCD.
Since this is an out-of-date technology, you won\'t find a lot of models using this way of lighting.
There will be some here and there, but they are almost always in a cheaper range.
The full array backlight changes outdated CCFLs to led.
A set of LEDs spans the back of the LCD screen, and the area of the LEDs can be lit or darkened during a process called local dimming (
We have a deep understanding of how local dimming works on the next page).
TVs with full-array LED backlight make up a large part
The end of the LCD TV market, there is a good reason
With more precise and even lighting, they can create better pictures than CCFLs LCD TVs can achieve.
In addition, they have lower power consumption compared to CCFL LCD.
Taking these benefits into account, it makes great sense to transform led as an industry standard.
Another form of LCD screen lighting is LED lighting.
As the name suggests, the screen edge of edgelit TV has LEDs.
There are several different configurations in this type of lighting, including: LEDsalong at the bottom;
Top and bottom; left and right;
Along four edges.
These different configurations lead to differences in image quality, but the overall brightness capability still exceeds what the ccfl LEDs can achieve.
While there are some drawbacks to electronic lighting compared to full array or direct backlight, the result is that electronic lighting allows manufacturers to make thinner TVs with lower manufacturing costs.
Local dimming is a function of the led LCD TV, where the LED light source behind the LCD is darkened and lit to meet the needs of the image.
Still, the LCD can\'t completely stop the light from passing through, even in a dark scene, so the dimming light source itself helps to create deeper black and more impressive contrast in the picture.
This is achieved by selectively dimming the LEDs when a specific part of the pictureor region —
Going to dark.
Local dimming of LCD
Based on the quality of the plasma TV and oled TV, the two TVs essentially have better contrast
What ccfl LCD display can\'t do.
However, the quality of the local dimming effect varies depending on the type of backlight used by the LCD and the quality of treatment in sue.
Here is an overview of effective local dimming for each LCD TV.
TVs with full array backlight have the most accurate local dimming and therefore the best contrast.
Since the led array spans the entire LCD screen, the area can be darkened in a finer way compared to the edgelit TV, and the brightness of the entire screen tends to be uniform.
\"Direct local dimming\" is basically the same as full array dimming, just less led scattered further in the array.
However, it is worth noting that many manufacturers do not distinguish \"direct local dimming\" from full array dimming, which is two separate forms of local dimming.
Vizio is currently the only manufacturer to distinguish between these two terms and direct local dimming in the market.
However, we still think it is important to note this difference because there are fewer and fewer
The spaced LED will not have the same precision and consistency as the full LED array.
Edge lighting is a process of projecting light from an led located at the edge or edge of the screen onto the back of the LCD display, rather than directly projecting to the back of the screen.
This works fine, but may produce very subtle blocks or light pixel bands within or around areas that should be dark.
Because of this, the local dimming of edgelit TV sometimes results in some blur in the dark area compared to the full array led TV.
It should also be noted that not all LED edgelit TVs provide dimming, which is why it is not uncommon to see glowing strips on the edge of the TV, with a slightly lower brightness in the center of the screen.
Since the eccfl backlight TV does not use led, the model of this lighting mode does not have dimming capability.
In contrast, the LCD panel of the ccfl LCD is constantly illuminated evenly, which is significantly different in image quality compared to the led LCD.
This is especially noticeable in scenes with high contrast, as the dark part of the picture may look too bright or washed away.
When you look at a well
The bright rooms easily ignore or miss the difference, but in the dark rooms it will be very obvious.
Like any technology, TV is constantly innovating and iterating into new and better things. The work of LCD TV has also changed a lot.
One of the biggest changes is electronic lighting technology.
In order to better narrow the local dimming quality gap between edgelit LCD and full array backlight LCD, manufacturers such as Sony and Samsung have prepared new edgelit LCD forms.
Sony\'s new technology is known as the \"ultra-thin Backlight Master Driver\", while Samsung has adopted an \"infinite array\" in the qled TV series \".
These new dimming forms promise to maintain an achievable ultra-thin profile through edgelit design, but the local dimming quality is higher than the full array backlight.
What\'s going on with QLED back there? Indeed!
QLED is a new advanced led LCD display from Samsung, not so-
It is called emission display technology such as OLED or plasma.
In addition to making some impressive changes in aesthetic design, qled TV will also bring some important changes in lighting technology.
The qled TV will use an LCD panel with electronic lighting, which is in some ways a technology to start showing its age.
However, Samsung has made some modifications and additions to its quantum dot material --
That is, the addition of metal elements, which will improve the overall efficiency.
This means a better, brighter grayscale and color and enhances HDR (
High Dynamic Range)
Samsung\'s HDR 1500 technology.
For a more detailed explanation of the QLED and the changes brought about by these new TVs, please check the above video and make sure to read our interpreter to detail many of the new features of QLED TVs.