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The advantages of LED backlight ultra-long life.
LED (Light Emitting Diode) light-emitting diode (LED) was recognized as the end of fluorescent tubes, light bulbs and other lighting equipment after its birth in the 60s of the 20th century. LED lamps, also known as light-emitting diodes, have the smallest power consumption for a single LED lamp compared to other light sources.
The LED light source is composed of many grid-like semiconductors, and each "grid" has an LED semiconductor, so that the LED backlight successfully achieves the planarization of the light source. The planar light source not only has excellent brightness uniformity, but also does not require complex optical path design, so that the thickness of the LCD can be thinner, and at the same time, it has higher reliability and stability.
Secondly, in terms of luminous life, LED backlight technology surpasses CCFL and is an improvement of CCFL technology. The lifespan of ordinary CCFL backlights is basically about 30,000-40,000 hours, and the lifespan of some top CCFL backlights (WCG-CCFL) is about 60,000 hours. This longevity can last for several years, even for frequent users.
The life of the LED backlight is longer, the life of the white LED backlight at this stage has been as high as 100,000 hours, even if it is used 24 hours a day, its life can be enough for 5 years.
Energy saving and environmental protection are outstanding, and it is a truly green TV.
An important factor in the rise of LED backlighting is the RoHS directive implemented by the European Union. The Directive provides for the elimination of substances such as lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers from electronic devices sold in EU Member States from 1 July 2006. While mercury is the main ingredient in CCFL tubes and other types of fluorescent lighting, LED lamps do not use mercury at all.
In terms of power consumption,Compared with ordinary CRT TVs,Flat-panel TVs consume a lot of power,Many consumers are quite concerned about the energy consumption of TVs。 It is understood that the 12 million flat-screen TVs sold in 2008, if each TV works 4 hours a day, it will consume an additional 2.4 billion kilowatt-hours of electricity every year, which is equivalent to the total annual power generation of several large thermal power plants.
The brightness of LED can be actively adjusted with the brightness of the picture, and the effective energy saving can reach more than 30% compared with LCD TV. In this way, when representing some dark scenes, you only need to adjust the local light in the necessary backlight area (the black or darker part of the picture) to show you a high-quality image with natural contrast between light and dark.
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LEDs have large pixels and cannot be made into home display devices.
Now there is no home LED TV Samsung Hisense that is all LED backlight LCD TVs Sell a concept Confuse the audio-visual The LED TV defined by others is LED backlight TV After all, the final interpretation is in the hands of others.
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Samsung is the first to lead the technology, not bad.
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At present, the market is led by Samsung, and the LED launched is essentially nothing more than treating LCD TV as LED TV, but it is just a change of name It still belongs to LCD TV Samsung's purpose of their propaganda is nothing more than hype.
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The real LED TV has not yet been listed,And the LED TV sold by Samsung is fake,It is just an LCD TV with LED backlight,The real LED TV will be on the market next year,It will be reasonable for us to buy ** when the time comes。
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LZ is completely right, as a three-star person in charge, it is completely a fool of confusing concepts, or a deception.
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LCD panels are mainly divided into 2 categories: TN and wide-angle panels, TN panels have mature production technology, high yield rate, ** cheap, the disadvantage is that the angle of view is small, and the color can only reach color, which is not conducive to the restoration of color. Wide-angle panels are divided into IPS panels, MVA panels, and PVA panels.
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People ask how many kinds of Samsung LCD panels there are, why are everyone's answers off topic? Samsung LCD panel is one kind, using TN screen, LG, Philips, AOC are all TN screens. PVA screen is used on Samsung LCD TVs,The display is not used,MVA is Fujifilm's LCD screen,It has nothing to do with Samsung,IPS is currently mainly used for TV,LG,Philips all use IPS,At present, the only display that uses IPS screen is Apple,20Inch sold to more than 5000 yuan,So the answer to this question is one,One,TN screen。
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There are several common ones:
Type: VA-type LCD panel is widely used in the current display products, used in high-end products, color (8bit panel) and large viewing angle is its most obvious technical characteristics, the current VA-type panel is divided into two kinds: MVA, PVA.
Multi-domain vertical alignment is a multi-quadrant vertical alignment technique. It is the use of protrusions to make the liquid crystal stationary, not the traditional upright, but biased to a certain angle of stationation; When a voltage is applied to change the liquid crystal molecules to a level so that the backlight can pass through, the display time can be greatly reduced, and the angle of view is wider because the protrusions change the alignment of the liquid crystal molecules.
The angle of view can be increased by more than 160 degrees, and the reaction time is shortened to less than 20 ms.
Type: It is a type of panel launched by Samsung, which is an image vertical adjustment technology, which directly changes the structure of the liquid crystal unit, so that the display performance can be greatly improved, and the light output and contrast ratio can be better than MVA. In addition, on the basis of these two types, the improved S-PVA and P-MVA panel types are extended, which are more advanced in terms of technical development, with a viewing angle of up to 170 degrees, a response time of less than 20 milliseconds (8ms GTG with OverDrive acceleration), and a contrast ratio of more than 700:
1. At a high level, most of Samsung's own products are PVA LCD panels.
Type: IPS LCD panel has the advantages of large viewing angle, delicate color, etc., and looks more transparent, which is also a way to identify IPS LCD panel, and many Philips LCD monitors use IPS panels. S-IPS is the second generation of IPS technology, which introduces some new techniques to improve the grayscale reversal phenomenon of IPS mode at certain angles.
LG and Philips' own panel manufacturers are also LCD panels launched with IPS as the technical feature.
Type: This type of LCD panel is used in entry-level and mid-range products, which is affordable and inexpensive, and is chosen by many manufacturers. Technically, it is slightly inferior in technical performance compared to the first two types of LCD panels, it cannot show bright colors, it can only reach color (6bit panel) but the response time is easy to improve.
The viewing angle is also somewhat limited, and the viewing angle does not exceed 160 degrees. At present, most of the products on the market with a response time of less than 8ms use TN LCD panels.
Look at the slogan, "Welcome to a whole new world." There is Samsung's LED technology that brings you crisp images and deep dark and bright colors. Ultra-slim Samsung LED TV". >>>More
Don't listen to their nonsense.
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I'm a professional TV,The color of this TV image is very good,The clarity is very good in similar products,The sound quality can only be said to be average,After all, the speaker power of the flat-panel TV is limited,And the design is not conducive to the best effect,If you want to have good sound quality, you still have to buy audio。
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