What does the plug LED1 and LED1 mean in LCD TV?

The plugs of LCD TVs are all two-wire plugs.

At present, some household appliances are directly started with alternating current (such as welding machines, air conditioners, refrigerators, washing machines, etc.), and some household appliances are started with direct current after rectification (such as televisions, computers, stereos, radios, etc.). The most important electrical appliance started by AC is because it is 220V or 380V, which is seriously harmful to the human body, so it is necessary to connect a ground wire in the electrical case, so the plug configured has one more wire, that is, three plugs, when the electrical leakage, it directly and quickly flows into the earth to ensure personal safety; The direct current started electrical appliances, although their leakage is only about +12V (computer) to about +120V (TV), the threat to the human body is not so serious compared to alternating current, so two-wire plugs are generally used.

1.In the two-wire socket, according to the requirements, the left side should be the zero line and the right side is the live wire, but some are not installed strictly according to this requirement, so if you want to know exactly which side is the zero line or live wire, it is best to use a test electric pen (also referred to as the electric pen) to try, the neutral line that does not shine is the zero line, and the light is the live wire. When using the pen, be careful not to touch the metal part in front of you with your hand to avoid electric shock.

2.The two-wire socket is only suitable for electrical appliances with plastic or other non-conductive materials as the shell, which is safe for human contact and does not require a ground wire. Do not use this kind of socket when using metal or other conductive material shells, although the electrical appliances will not be electrocuted when they are completely normal, but if the electrical appliances have leakage faults, the shell will be electrified, and the human body may be electrocuted when it touches the electrical appliances, which is very unsafe.

Therefore, the power plug of any electrical appliance with metal shell is generally three-wire, and the longer one in the middle is the grounding wire to prevent the shell from being electrified.

Generally refers to the plug of the LED backlight.

Are these two plugs on the internal circuit board after opening the TV's case? If so, this means that an LED can be plugged in as an indicator (what signal is to be determined).

LCD TV plug, these two symbols should represent the positive and negative voltage of the LED light.

This is the terminal of the two types of wiring of the LCD TV.

LCD TV internal plug These two models refer to its size.

What do you mean by the plug today? LCD TVs don't have plugs, they can be directly collared.

LCD TV, the plug inside it has a unique meaning.

1. LED TV.

LED TVs are TVs that use LEDs for direct imaging. In principle, the light source behind the liquid crystal display device is evenly irradiated on the transparent film with the picture after a certain diffusion, so as to transmit the picture, and the liquid crystal panel is like that layer of film.

Traditional liquid crystal display devices use CCFLS (cold cathode fluorescent lamp) as the light source, and the lamp tube is very thin. A lot of objects have weird colors under fluorescent lamps because the light it emits is not true daylight.

One of the reasons why it has been difficult for professional users to truly satisfy the image display of liquid crystal displays is that the color of the light source is not accurate enough, and the image generated after passing through the liquid crystal panel is congenitally insufficient, resulting in color reproduction deviation.

2. LCD movies.

Liquid crystal display (LCD) is a liquid crystal display (LCD) that uses a substance between a solid state and a liquid state, an organic compound with a regular molecular arrangement, which is heated to present a transparent liquid state, and a cloudy solid state of crystalline particles after cooling.

The molecular structure of the liquid crystal used for liquid crystal displays is similar to that of a thin matchstick, and it is called Nematic liquid crystal, and liquid crystal displays made of this type of liquid crystal are also called liquid crystal displays (LCDs).

The LCD TV is in the liquid crystal between two glasses, add voltage, through the molecular arrangement changes and zigzag changes to reproduce the picture, the screen through the collision of electrons, create a picture, and form a picture through the perspective reflection of external light.

Pro,For night TV,LCD and LED are two different display technologies,LCD is a display composed of liquid crystals,And LED is a display composed of light-emitting diodes。

Compared with LCD displays, LED displays have more advantages in terms of brightness, power consumption, viewing angles, and refresh rate. With LED technology, it is possible to create displays that are thinner, brighter, and clearer than LCDs.

1. The power consumption ratio of LED to LCD is about 1:10, and LED is more energy-saving.

4. The reaction speed of a single element of the LED display is 1000 times that of the LCD screen, which can also be taken care of under strong light, and can adapt to the low temperature of minus 40 degrees.

5. Contrast ratio, the currently known LCD display with higher contrast ratio is 350:1, but in many cases, it cannot meet various needs, but the LED display can reach higher and be used more widely.

At present, the LED display on the market is not a real LED display, to be precise, it is an LED backlight liquid crystal display, and the LCD panel is still a traditional LCD display, in a sense, this contains a somewhat fraudulent nature! South Korea's Samsung has been convicted by the British Advertising Association of violating the country's advertising law because its "LEDTV" LCD TV is suspected of misleading consumers. For LCD displays, the most important key is its LCD panel and backlight type, while the LCD panel of the display on the market generally uses TFT panel, which is the same, and the difference between LED and LCD is only that their backlight type is different:

LED backlight and CCFL backlight (i.e., fluorescent lamps) are diode and cold cathode tubes, respectively.

LED refers to the backlight of light-emitting diode The benefits of LED are high brightness, low working voltage, low power consumption, miniaturization, long life, impact resistance and stable performance.

The TV color of the LED backlight will be clearer and more realistic, and the three-dimensional sense is strong Of course, it is only theoretically The material used in the TV screen is still the dominant factor.

There are 3 types of backlit TVs on the market.

CCFL backlight LCD (also known as "traditional LCD TV", "LCD"), LED backlight LCD (also known as "LED TV"), HCFL backlight LCD (suitable for larger size TVs, can be applied to 66-inch products, less on the market).

And all three of these belong to LCD TVs, but they are different backlights, and toxic materials are used in the manufacture of CCFL backlights, while LED backlights do not form toxic substances.

LEDs are light-emitting diodes, and LCDs are liquid crystal displays.

The current LED TV is an LCD TV with LED backlight,Ordinary LCD TV is CCFL cold fluorescent tube backlight,The difference is who is betterLED or CCFL backlight。

In terms of color performance and brightness, the two are about the same.

In fact, the recent LED technology breakthrough has caught up with CCFL) In terms of luminous efficiency, in a certain size, the efficiency of LED is higher, and the power consumption may be less, so at present, businesses are bragging about what is green and environmentally friendly. In this way, it can be sold more expensively.

In terms of life, the life of a single LED is longer than that of CCFL, but the LED for backlight is a group of many LEDs, and as long as one of them is broken, the display effect will be affected, and the actual performance is also tied with CCFL estimates.

So it is not recommended to chase LED TVs at this time. However, if you have sufficient funds, you can still buy and use it.

The so-called LCD and LED are the most useful backlights, which are the parts that provide bright light to the panel! Generally, the LED will be thinner! The uniformity, brightness and life will be better!

Another consumer ...... who has been fooled by shopping guides

LCD is the English abbreviation of liquid crystal display, and all LCD TVs in the mall can be called LCD TVs.

The so-called LED TV should be called an LED backlight LCD TV.

The so-called LCD TV should be called CCFL backlit LCD TV.

The LCD screen used in LED TVs is the same thing as the so-called LCD screen. It's just that there is a difference in the backlight technology used. If you buy a TV, it is not recommended to buy an LED backlight ......Because the technology of LED itself is not very mature, the technology of CCFL is very mature.

The function is that LED is now a new type of screen, better than the previous LCD screen, bright, colorful, ** effect is good, and LED TV brightness reaches the highest as soon as it is turned on, and LCD is slowly bright is the tube. The shockproof effect LED is better than LCD, and the screen brands are almost the same, and there are only a few companies in the world that make screens, so most of the brands are produced by screen companies, and there is not much difference.

There is basically no difference, just a different brand. Ordinary LCD TV and LED LCD TV, but the backlight is different, ordinary LCD TV uses a cold cathode backlight, LED TV is also an LCD TV, it uses a light-emitting diode (LED) as the backlight.

At present, there have been a number of products called LED TVs in the domestic market, such as Samsung, Sony, Hisense, etc. Compared with ordinary LCD TVs of the same size, LED TVs are staggeringly expensive - two or even five times higher. In this regard,Industry insiders said,At present, the TV with the name of LED TV on the market is not a real LED TV,It's just an LCD TV with LED backlight,In essence, it's still an LCD TV。

According to industry insiders, the use of LED as the backlight of LCD TVs has improved some of the performance of existing LCD TVs to a certain extent. However, all the LED TVs seen on the market are implemented through this improvement, which is more suitable to be called LED-lit LCD. The imaging principle, working status and most of the parts used in LED-LIT LCD are no different from ordinary LCD TVs.

Liquid crystal display uses the principle of passive light emitting technology, so liquid crystal needs a backlight system to provide a light source. At present, the backlight used in LCD TVs is mainly divided into three types: CCFL (cold cathode fluorescence), LED (light-emitting diode) and HCFL (hot cathode fluorescence). Among them, CCFL is the most widely used, HCFL has just started, and the technology is still quite immature.

Due to the lack of congenital technology, CCFL backlights have shortcomings such as narrow color gamut, low energy utilization, high power consumption and short lifespan. And the use of LED as the backlight of LCD TV,The main purpose is to improve the picture quality,Especially in color saturation,LED backlight display can obtain a wide enough color gamut,Make up for the defect of insufficient color number of LCD TV display,Make it can meet or even exceed the requirements of Adobe RGB and NTSC color standards,Can reach NTSC color gamut coverage rate of more than 100%. As an alternative to CCFL backlight, LED backlight is an important R&D direction of major manufacturers in the future, and the CCFL backlight is basically the same in structure, the main difference is that LED is a point light source, and CCFL is a line light source.

The so-called LED refers to light emitting diode, which is what we often call light-emitting diode. At present, LED backlight materials are mainly divided into two types: white LED backlight and RGB-LED backlight. Because white is a mixed color, there is no identifiable wavelength value, so white LED will have the problem of color deviation, and RGB-LED with red, green, blue LED composition of light-emitting unit, can independently control the light source, to achieve the effect of full color, so as to achieve more accurate color reproduction, show better picture quality effect.

LED backlight TV is regarded as an upgraded product of a new generation of LCD TV, due to the advantages of light and thin texture, bright color, energy saving and power saving, or it will become a TV product that can effectively extend the vitality of the LCD era and lead the new generation of flat panel TV market; Due to the high cost of OLED TV products and the inability to produce large sizes, LED backlight LCD TVs have more advantages. In addition, due to the particularity of the luminous principle of LED LCD TV products, the standby power and power consumption of the whole machine are greatly reduced compared with LCD TV products of the same size, which is more energy-saving.

Since 2003, Sony launched the first LED backlight LCD TV product - QUALIA has attracted strong attention in the field of flat-panel TV manufacturing, and has also stimulated many flat-panel TV manufacturers to develop enthusiasm for LED LCD TV products. In the following years, Sharp, Samsung and other companies have promoted their LED LCD TV products in various exhibitions, and the LED LCD TV market has initially germinated. And China's own brand Hisense in July 2008, launched the first domestic LED backlight LCD TV, becoming the first enterprise to mass-produce LED LCD TV products.