edge-lit lcd panel supplier

Lightboxes can be built to your specifications regarding size, color temperature, and frame color. Single and double-sided [illuminated on the front and rear face] light panels are also available. Edge-lit panels are 8mm or about 1/3-inch thick a light panel including a flip-open frame [now called a lightbox] has a thickness of 0.625 to 1.50-inches. Illumination across the LED light panel from edge-to-edge is within 10% so a dark center is not a concern. Read more

Light panels have many uses in retail environments such as lighted shelves, signs or as a lightbox for photographic transparencies, stained glass and faux windows. For interior lighting applications, the panel performs well as a ceiling troffer, lighted wall, under cabinet light and under stone such as Onyx, quartzite or translucent man-made countertops. Read more

In signage, edge-lit panels can be a substitute for fluorescent tubes. Panels are thin, evenly illuminated and last for years without maintenance. Several color temperatures are available and RGB.

When displaying stained glass or some other translucent material in a window, you can use our clear edge-lit panel to let natural light through during the day and illuminate your art at night.

LED-backlit LCD, which uses light-emitting diodes for backlighting is a common type of display on televisions and laptops. Unlike pure LED screens these LCDs are not self-illuminating and are reliant on the backlighting for illuminating the display. It is an advancement on the preceding cold cathode fluorescent technology and some manufacturers and retailers may advertise this type of screen as an LED TV.

Edge-lit is a type of screen backlighting that has LED lights lining either the top and bottom edges of the screen or the perimeter of the screen. This form of backlighting differs from others as the screen is not lit from behind, and often produces a more muted effect. An opaque piece of plastic called a diffuser light guide distributes the lighting across the rear of an LCD panel.

Edge-lit LEDs can be individually brightened or dimmed to provide the high degree of backlight control that screened content demands. Edge-lit screens can achieve this in one of two ways:

Direct-lit backlighting uses LED lighting across a television back panel. This form of backlighting initially used Cold Cathode Fluorescent Lamps (CCFLs) before transitioning to LED. The lighting is behind the LCD panel to provide consistent lighting across the entire screen.

Both types of backlighting provide the illumination LED screens required to produce a visible image. The main difference is that direct-lit backlights sit behind the LCD panel to provide the necessary lighting whereas edge-lit screens have LEDs sitting at the perimeter of the screen. Here are some other notable differences:

The first generation of LED backlighting was edge-lit. However, this early form of edge-lit technology caused the development of hotspots on the screen and the overall lighting was inadequate. As LED design became more efficient and effective, Samsung revisited this type of backlighting with a market-leading edge-lit LED television in 2009.

Direct-lit panels use a simple array of LEDs to provide uniform lighting across an entire LCD panel. The adoption of direct-lit screen technology in the 2000s was driven by the availability of white LEDs that could replace existing CCFL technology.

Do you ever need a cheap, quick way to make an impressive display? Do ever want to show more than a blinking LED but want something easier to use than a LCD? Do you want to make light appear to hover in mid-air? Then give some thought to edge lighting.

I love this instructable! I was inspired to do it myself from the first time I seen it and have made a few small business card sized panels with my friends businesses on them and gave them as gifts. Yesterday I did one a little more elaborate for a good friend of mine and I think it"s the best I"ve done. Normally I wouldn"t even bother to put up a post to anything but your inspiration brought out a new skill for me to master and I thank you for that!

When comparing different models of televisions, you might see the term "edge-lit LED." All LED TVs are a type of LCD TV; the "LED" refers only to the kind of lighting source used to illuminate the LCD pixels in the television. There is more than one way to light the pixels. The two primary technologies are edge-lit and full-array.

In an edge-lit television, the LEDs that illuminate the LCD pixels are located only along the edges of the set. These LEDs face inward toward the screen to illuminate it.

In some poorer-quality edge-lit LEDs, uniform picture quality can be a problem. Because the LEDs are along the edges of the panel, quality declines as you approach the middle of the screen because a uniform amount of illumination is not reaching the pixels further from the edges. Again, this is more noticeable during scenes of darkness; the black along the sides of the screen is more gray than black (and corners can appear to have a flashlight-like quality of illumination emanating from the edges).

Full-array LED televisions use a full panel of LEDs to illuminate the pixels. Most of these sets also have local dimming, which means the LEDs can be dimmed in different regions of the panel while other areas are not. It helps improve black levels, which appear closer to black than dark gray.

In general, full-array LED is a superior technology when it comes to picture quality, but edge-lit sets have one significant advantage: depth. Edge-lit LED TVs can be much thinner than those lit with either a full LED panel or traditional fluorescent (non-LED) backlight. For that reason, most of the super-thin sets you see in stores will be edge-lit.

If you"re looking for the best possible picture quality, you are most likely to find it in a full-array LED display with local dimming. If you are primarily concerned about the appearance of the television and want an extremely thin screen, edge-lit is the style that will fit your needs.

There are two types of LED TV - edge-lit and back-lit televisions. So what is the difference, and is it important? Find out everything you need to know.

Different parts of the screen can have the blocks of lights switched on or off at any time, which gives the TV a much better contrast ratio than a traditional LCD TV.

A downside is that the power consumption of these TVs can be greater than standard LCD or edge-lit televisions – especially those models which use RGB LEDs.

The advantage over an edge-lit TV is that the lighting will usually be more uniform across the screen – eliminating the light-pooling of edge-lit screens.

The lights in edge-lit LED televisions are placed around the perimeter of the LCD screen – and the light they emit spreads across the back of the panel using a series of ‘light guides.’

LCDs need to be supported by additional lights because they don’t produce their light. To create this light, you can either use edge-lit LEDs or backlit LEDs. The primary difference between edge-lit and backlit LEDs is in the lighting is arranged. The light sources of Edge-lit displays are placed on a diffuser (usually thin) behind the LCD to create light dispersion.

The significant advantage of using an Edge-lit flat panel lights LED display is the reduced thickness. As a result of this, the displays are placed on Edge and not directly behind the LCD. It leads to the thinness of the diffuser. Most thin diffusers are usually edge-lit and not backlit, and they transfer the majority of the components to a big stand.

Switching from fluorescent troffer lights to LED troffer lights has its benefits, but the process could prove to be daunting and not so easy. You could either use Edge-lit panels or Backlit panels. Here are the significant differences between these panels.

Concerning the location of the LEDs, Edge-lit light panels are placed on the Edge of the frame. The light that emits is guarded by a light guard panel that directs it sideways. The light board is designed for the smooth and evenly distribution of light in a given space. The sleek look of the diffusers is a result of the small depth of the panel. The installation of Edge-lit can be done in a standard grid ceiling. And the sleekness and thinness of the board make it possible to install Edge-lit LEDs on walls and ceilings using suspension box or cable installation kits.

Backlit, as the name implies, is placed at the back of the frame instead of at the Edge. This position causes the LED to shine directly out, straight through the diffuser. In backlit LED, there is no light guard. As a result of this, the light shines directly outward and does not need to be directed. The straight direct light does not cause a glare because the backlit LED also has a diffuser which smoothens the light. The risk of yellowing of light guard is absent because there is no need for one. The directness of the LED light makes backlit more efficient than edge-lit. Unlike in edge-lit, where the light travels through the diffuser panel, light only passes through the thickness of the material in backlit.

The disadvantage of Backlit is the thickness of its diffuser. You cannot install it just anywhere. It has to be installed in a drop grid ceiling. Although its panel is thicker than Edge-lit, it is still easy to operate due to its lightweight around its surface.

Modern LCD TVs rely on LED backlighting to produce the visuals you see on the screen. But their picture quality and price can differ based on their backlighting system. So, what are these backlighting systems, and how are they different?

LCD TVs can be grouped into three categories based on the type of LED backlighting system: Direct-lit, edge-lit, and full-array. As the name suggests, direct-lit TVs feature a panel of LEDs placed directly behind the display stack. Full-array TVs have a similar LED placement, but the number of LEDs is significantly more, and these LEDs are divided into different zones. But unlike both direct-lit and full-array TVs, edge-lit TVs have LEDs on the perimeter, and depending on the TV, these LEDs may or may not be grouped into multiple zones.

The LED backlight zones in full array and edge-lit TVs are significant as they enable the manufacturers to implement a feature called local dimming. It allows TVs to control the backlight on a scene-by-scene basis. So the TV can turn off LED backlighting in parts of the screen where it’s supposed to be darker while keeping other parts lit. As a result, LCD TVs with local dimming can produce deep, uniform blacks and have a better contrast ratio than the LCD TVs that don’t have this feature.

Direct lighting is the newest of the three types backlighting in LCD TVs. The first commercial direct-lit LCD TVs emerged around 2012 and are essentially an off-shoot of the full-array TVs.

But, the lower number of LEDs also means they have to be placed farther away from the screen to offer sufficient light coverage across the panel. As a result, direct-lit TVs are usually thicker than TVs with other backlighting systems.

Additionally, the lack of backlight control limits the contrast ratio of direct-lit LCD TVs to the native contrast ratio of the panel. So if a direct-lit TV uses a VA-type LCD panel, it will have a reasonable contrast ratio, but TVs with IPS-type panels have a poor contrast ratio.

Sony X85J is a direct-lit 4K LCD TV. It uses a VA-type panel and comes with features like HDMI 2.1 ports, VRR support, and Android TV operating system.

Edge LED backlighting first appeared in TVs in 2008, allowing for a thinner profile than LCD TVs with other backlighting solutions. But as the LEDs are placed on the rim of the screen, edge-lit TVs require a diffuser to light up the entire display adequately. This adds to their cost, making them slightly more expensive than direct-lit TVs. But given that backlighting is just one part of an LCD TV’s cost, you will find both cheap and costly edge-lit TVs on the market.

Some edge-lit TVs also come with local dimming support. But the number of backlight zones is typically far lower than in full-array TVs, and the individual LEDs are responsible for lighting up entire columns of the screen. So edge-lit local dimming is much less precise, and the benefit in terms of contrast ratio is minimal.

Full-array TVs have the best backlight implementation among LCD TVs. Not only do these TVs have a large number of LEDs, but the LEDs are also divided into multiple zones for dynamic backlight control. So, depending on the number of backlight zones and local dimming implementation, full-array TVs can have modest to excellent improvement over the native contrast ratio of the LCD panel.

Unfortunately, LCD TVs with full-array local dimming can also suffer from various screen artifacts, such as blooming and black crush, depending on the number of backlight zones and the overall local dimming implementation.

The Samsung QN90A is one of the best LCD TVs on the market and it uses full-array local dimming. The TV has 4K resolution, HDMI 2.1 port, and a 120Hz VA-type panel.

If you are shopping for a new TV and curious about its backlighting system, you can consult the TV’s specifications. Manufacturers generally mention whether an LCD TV is direct lit, edge lit, or full array. In the case of full-array TVs, the number of local dimming or backlight control zones is also listed in the TV’s specifications. This number is usually different for different sizes of a particular TV and can impact the amount of contrast ratio gain you can expect.

OLED TVs are self-emissive and don’t need a backlight, unlike LCD TVs. Instead, each pixel of an OLED panel can generate its own light and be switched off to display the perfect black color. So, OLED TVs essentially offer pixel-level local dimming. As a result, they have a near-infinite contrast ratio and are generally considered to have the best picture quality. But they are also typically more expensive than LCD TVs and can suffer from burn-in.

All-in-all, the backlight system of an LCD TV can impact its picture performance. And if you are shopping for a new TV, full-array TVs generally have the best picture quality. But if you are restricted by your budget, direct and edge-lit TVs can also deliver good visual performance. But make sure to read expert reviews to get a better idea about the overall quality of a particular television.

When it comes to LCD displays, one of the most critical components of any design is the LCD backlight system. The backlight enables transflective displays to be visible in low-light situations and enables transmissive displays to be visible, period.

There are three primary LCD variations used today to meet the technical challenges; LED array, mono edge lit design, and the color edge lit design. Each of these LCD backlight types can be used to suit specific applications based on the cost, performance, and mechanical and electrical considerations.

LED array backlight designs involve an array of backlight LED chips that are soldered directly to a PCB board and then epoxy encapsulated. The chip form LEDs shine directly toward the LCD display and through a diffuser on the front surface of the backlight to evenly distribute this direct light.

The advantages of the edge lit mono style are its thinner design and fewer LEDs, which require less power and can lower costs when dealing with more expensive white, blue, or red multichip LEDs. The edge lit backlight can also be a versatile mechanical component and can incorporate display mounting features directly into the backlight. The LED edge lit (mono) design is the lowest-cost and preferred solution for mono graphic LCD displays.

For color display applications, a whole new set of obstacles require a unique backlighting solution. Color filters for color displays block out two-thirds of all light, which means color displays require far brighter backlights to be effective. Additionally the range of color depth requires a much higher luminance to clearly distinguish the color grey shades to result in a vibrant color image to the end user. And when an LCD is competing with outdoor sunlit environments, this luminance requirement is even higher.

The design of edge lit backlights for color applications is similar to mono displays with the edge concept, but they use a separate light guide insert and light box to more efficiently contain and reflect light. Additionally, these systems use a high efficiency reflector and a crossed combination of two brightness enhancement films which act to redirect the light so it is focused more perpendicular to the LCD display and increase the intensity or brightness at the user. It requires two films, one in the X direction and one in the Y direction to focus the entire cone of light.

High-bright white LEDs are used to further maximize brightness and the final surface of this backlight system is a diffuser to evenly distribute the light into the LCD glass.

The combination of the enhancement films, separate light guide and frame, high bright LEDs, and specialty films are necessary to provide the 150 to 1,000 nits of brightness required at the surface of the color LCD display in order to be to be visible and vibrant.

The days of the Electroluminescent (EL), Cold Cathode Fluorescent Lamp (CCFL) and front lights, are over for LCD displays. The large TV application was the last to employ a CCFL, but now with the lower cost and improved light quality of LEDs even TV’s have adopted the edge lit LEDs.

An LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting.TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-backlit LCDs, but offer a variety of advantages over them.

While not an LED display, a television using such a combination of an LED backlight with an LCD panel is advertised as an LED TV by some manufacturers and suppliers.

A 2016 study by the University of California (Berkeley) suggests that the subjectively perceived visual enhancement with common contrast source material levels off at about 60 LCD local dimming zones.

LED-backlit LCDs are not self-illuminating (unlike pure-LED systems). There are several methods of backlighting an LCD panel using LEDs, including the use of either white or RGB (Red, Green, and Blue) LED arrays behind the panel and edge-LED lighting (which uses white LEDs around the inside frame of the TV and a light-diffusion panel to spread the light evenly behind the LCD panel). Variations in LED backlighting offer different benefits. The first commercial full-array LED-backlit LCD TV was the Sony Qualia 005 (introduced in 2004), which used RGB LED arrays to produce a color gamut about twice that of a conventional CCFL LCD television. This was possible because red, green and blue LEDs have sharp spectral peaks which (combined with the LCD panel filters) result in significantly less bleed-through to adjacent color channels. Unwanted bleed-through channels do not "whiten" the desired color as much, resulting in a larger gamut. RGB LED technology continues to be used on Sony BRAVIA LCD models. LED backlighting using white LEDs produces a broader spectrum source feeding the individual LCD panel filters (similar to CCFL sources), resulting in a more limited display gamut than RGB LEDs at lower cost.

A first dynamic "local dimming" LED backlight was public demonstrated by BrightSide Technologies in 2003,Sony in September 2008 on the 40-inch (1,000 mm) BRAVIA KLV-40ZX1M (known as the ZX1 in Europe). Edge-LED lighting for LCDs allows thinner housing; the Sony BRAVIA KLV-40ZX1M is 1 cm thick, and others are also extremely thin.

LED-backlit LCDs have longer life and better energy efficiency than plasma and CCFL LCD TVs.mercury, an environmental pollutant, in their manufacture. However, other elements (such as gallium and arsenic) are used in the manufacture of the LED emitters; there is debate over whether they are a better long-term solution to the problem of screen disposal.

Quantum dots are photoluminescent; they are useful in displays because they emit light in specific, narrow normal distributions of wavelengths. To generate white light best suited as an LCD backlight, parts of the light of a blue-emitting LED are transformed by quantum dots into small-bandwidth green and red light such that the combined white light allows a nearly ideal color gamut to be generated by the RGB color filters of the LCD panel. In addition, efficiency is improved, as intermediate colors are no longer present and do not have to be filtered out by the color filters of the LCD screen. This can result in a display that more accurately renders colors in the visible spectrum. Companies developing quantum dot solutions for displays include Nanosys, 3M as a licensee of Nanosys, QD Vision of Lexington, Massachusetts, US and Avantama of Switzerland.Consumer Electronics Show 2015.quantum dot displays at CES 2017 and later formed the "QLED Alliance" with Hisense and TCL to market the technology.

Mini LED displays are LED-backlit LCDs with mini-LED–based backlighting supporting over a thousand full array local dimming (FALD) zones, providing deeper blacks and a higher contrast ratio.

Novitsky, Tom; Abbott, Bill (12 November 2007). "Driving LEDs versus CCFLs for LCD backlighting". EE Times. Archived from the original on 28 November 2010. Retrieved 21 November 2020.

LCD Television Power Draw Trends from 2003 to 2015; B. Urban and K. Roth; Fraunhofer USA Center for Sustainable Energy Systems; Final Report to the Consumer Technology Association; May 2017; http://www.cta.tech/cta/media/policyImages/policyPDFs/Fraunhofer-LCD-TV-Power-Draw-Trends-FINAL.pdf Archived 1 August 2017 at the Wayback Machine

What"s a backlight? Well, it"s the light source that is situated directly behind the LCD panel of the majority of TVs. It"s what makes the screen glow, what gives bright colors their vibrancy, and increasingly, what gives dark shadows their depth.

There"s a little more to the glowing panel of an LCD TV than you might expect. The LCD panel offers the shape and color components of an image, but it doesn"t actually produce any light of its own. And without light to produce the colors we see and project the image outward to the viewer, an LCD TV wouldn"t be worth much. Enter the humble backlight.

Behind the LCD panel is a backlight, and between the backlight and the LCD panel are usually a few layers of polarized filters, backlight diffusers, and other optical layers designed to turn this collection of tech components into a sharper viewable image.

You"ll have an LCD panel to provide much of the image content, and a backlight behind it to provide the light that makes that LCD panel visible and the colors vivid. But that backlight has undergone a lot of changes over time — several just within recent years. And a lot of the improvements we"ve seen in modern TVs can be traced to the humble backlight.

But with the advent of LCD-based flat screen TVs, the need arose for illumination, and originally that meant cold cathode fluorescent lamps (CCFL), a technology that"s similar to fluorescent and neon lighting. But because these lamps generate heat that can damage a display and aren"t terrible energy-efficient, they"ve pretty much disappeared from today"s TVs.

Instead, they were replaced by one of the biggest innovations in modern TV technology: LED backlighting. With this change, TV manufacturers started calling LCD TVs with LED backlight "LED TVs" to differentiate them from the older CCFL-lit models. But with the last CCFL TVs going off the market a decade ago, it"s just as likely that TV makers have kept the LED nomenclature around to blur the distinction between LCD TVs and OLED panels, which use a very different (and largely superior) display technology.

Edge-lit displays illuminate the LCD panel by setting a row of LEDs along the top and bottom edges of a screen, or ringing the perimeter of the TV frame with LED lights. This light is then distributed across the back of the LCD panel with a special diffuser light guide, a semi-transparent sheet of plastic that allows the light from the LED in the TV bezel to illuminate a larger portion of the display.

It"s a very cost effective way to light a TV, since it uses the least amount of LEDs. It also offers some level of dynamic backlight control for HDR support. On sets that are equipped to do so, portions of the edge lighting strips can be darkened or dimmed to provide deeper blacks, or brightened to accentuate brighter portions of the screen. However, since they don"t directly light the LCD panel from behind, the effect is considerably muted when compared to other backlight technologies.

Direct lit LED backlighting uses LED lighting across the back of the TV, directly behind the LCD panel, providing a fairly uniform amount of light across the screen. It also allows for a brighter picture, since it uses more LEDs, and is able to utilize more of the light coming from those LEDs.

However, an all-white back light alone has its limitations. Because the entire LCD panel is lit uniformly, there"s little to no dynamic range offered by the display.

Toshiba C350 Fire TV (2021 model)The Toshiba C350(opens in new tab) is one of the better Amazon Fire smart TVs we"ve reviewed, but the direct LED backlight is something of a double-edged sword. It"s better and brighter than a basic edge-lit LED backlight, and picture is better as a result, but the lack of local dimming means that – despite the TV"s support for Dolby Vision and HDR10 formats – HDR content just doesn"t look very good.

Local dimming has been further refined with the introduction of mini-LEDs. By shrinking the LED size down to about one-fifth the size – mini-LEDs measure 0.008-inch (200 microns) across – more LEDs can be packed into the backlight panel, and much smaller dimming zones to be used.

Samsung QN90A Neo QLED TVWhen it comes to the several TVs on the market that have mini-LED backlight, the Samsung Neo QLED takes the top spot, holding the top position among the best TVs we"ve reviewed. It"s a great TV for many reasons, but the impeccable backlight and HDR performance of the Samsung QN90A Neo QLED TV(opens in new tab) makes it one of the best LCD TVs we"ve ever seen.

OLED displays have individual pixels that light up without the need for a separate illumination source, creating a self-emissive display panel that doesn"t need any sort of backlight.

Most television companies, as well as sellers, misguide consumers by saying that this particular TV is not LCD but LED. So, first of all, we need to understand that all TVs are basically only

LCDs. What we refer to as LED is simply an update to the existing LCD panels. The panel technology is the same, however, the backlight is entirely different. Those LCDs that use LEDs as a light source are generally termed as LEDs. In short, a LED-backlight is a replacement for the uniform CCFL (Cold Cathode Fluorescent Light) backlight that previously gave LCD TVs its brightness.

Initially, there were only CCFL-backlit LCDs, but with advancement in technology, these CCFL were replaced by LEDs, as not only they dramatically reduced power consumption by over 40 percent compared to conventional CCFL-backlit LCDs, we got more control over the image quality by modulating these individual LEDs.

In the LED-backlit LCDs, LED lights can switch on and off individually, which allows the image to have greater contrast, bright whites and deep black in the same image. Thus, producing a superior picture when compared to CCFL-backlit LCDs. LCD TVs with LEDs also offer better response time in comparison to CCFL-backlit LCDs.

In the traditional LCDs, the CCFL lights were spread all across the surface behind the display screen, but there was no control over them. It means that when we switched on our TV, the entire surface behind the screen used to get illuminated by these CCFL lights that were always ON, and we were unable to control their dimming in specific areas of the screen.

Because of this, even the dark part of the picture used to be illuminated like the rest and we were unable to achieve images with convincing blacks, as light passed through the dark part of the picture and made it appear grey. In other words, the contrast of CCFL-backlit LCD panels isn’t very good. However, a plasma TV doesn’t have this problem as each pixel can light up or switch-off according to the demand of the picture.

Now coming to LCDs that use LEDs as the source of illumination, there are basically three types. One is Full-array backlighting, another is Edge-lit backlighting (ELED) and third is direct-lit LED backlights (DLED).

The term full-array is used where LEDs cover the entire back-side of the LCD panel. Full-array TVs are high-ends TVs that are heavier and often thicker, but they provide better picture quality as all parts of the screen are evenly backlit. They offer the most effective local dimming, as the LEDs are more in number and are spread over the entire back surface of the panel. The independent dimming of each LED in these TV sets helps in achieving perfect blacks. But, as they are costlier to manufacture, they are rare.

This technology allows the designing and manufacturing of exceptionally thin TV sets. Edge-lit sets also have a cost-benefit over direct, local dimming versions (DLED) as fewer LEDs are used in them. Because of which, they are power efficient too.

Direct-lit LED backlights are an offshoot of full-array backlighting, though they use significantly fewer LEDs across the back of the panel. In this technology, several rows of LEDs are placed behind the entire surface of the screen.

As the LEDs are behind the LCD panel in DLED TVs, dual modulation works far more efficiently and the TVs can have better overall brightness and contrast. Using a feature called local dimming, the LEDs are divided into a number of zones that can be individually controlled, so some portions of the backlight can be dimmed while other remain illuminated.

Though different brand TVs might be using the same DLED or ELED backlighting, their image quality might differ considerably depending on how many lights are used and how they are aligned. In some budget Edge-lit TVs, LEDs are aligned on only one side, either upper or lower edge of the TV panel, while others might have LEDs on both upper and lower edges of the panel. The high end TVs might even have a row of LEDs on all four edges of the panel. Some manufacturers use both Edge and Direct LED systems for LCD TVs. The best professional monitors use direct LEDs.

Though bigger brands like Sony, Samsung and LG also prefer EDGE-lit LED backlighting in their TVs, they complement it with some of their indigenously formulated technology to enhance the picture quality.

TV manufacturers lay more stress on producing TVs with ELED technology as it not only cut down upon their expenditure but allows them the liberty of producing ultra-slim TV sets that can appeal the masses with their aesthetically designed panels.

LED backlighting is the most commonly used backlight for small, LCD panels. Light-emitting diodes, or LEDs, are practical components for a light source because of their small size. LED backlighting is popular due to its overall low cost, long life, variety of colors and high brightness.

LED backlights are housed in a light box that has a diffuser to evenly distribute the LED light. The light box is then mounted behind the LCD’s viewing area. The LED backlight comes in two configurations: array and edge lit. The array configuration has the LEDs mounted in a uniform, grid layout within the light box. This configuration gives off a very bright, even light. The disadvantage of an array configuration is that it requires a thick light box design to accommodate the number of LEDs required. The high number of LEDs in this configuration also means it consumes more power.

A third type of backlight option available uses an electroluminescent (EL) panel. The EL backlight is constructed of a series of different material layers that work together to create the light. The EL panel generates light when an electric current (AC power) is applied to its conductive surfaces. The advantage with EL backlighting is its low power consumption, no heat emission, and overall thin composition. EL backlighting is limiting in that it requires an invertor to generate the VAC needed to emit the light.

The last common backlight option available are cold cathode fluorescent lamps (CCFLs). CCFL backlights are a cost effective option typically found in graphic displays. The CCFL backlight for LCDs is usually configured with the lamp on the edge of a diffuser to distribute the light. An inverter is required to supply the voltage required by the fluorescent lamp. CCFLs offer a bright white light with low power consumption. This backlight option is not ideal for cold-temperature applications (less than 15°C) as the light output decreases with decreased ambient temperature.

There are many different backlight options available for your LCD. The most common types are LED, fiber optic, EL, and CCFL backlights. Cost and application of your product will have the highest influences on which backlight technology is best for your LCD.