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Archive for March, 2010

LED TV – Technology with a Bright Future

31 Mar

How LED Works (The Technology behind Light Emitting Diodes)

led tvTelevision screens have come a long way from the standard box sets that first debuted in the 1920s. Since then, technological advancements have provided consumers with a variety of brighter, wider and clearer screen display choices— available in Light Emitting Diodes (LED), Liquid Crystal Display (LCD) and plasma. These screens differ in their longevity and color as well as their environmental effects. Plasmas, which have been the longest running product on the market, have been popular for resiliency and good contrast ratio, while LCDs have been well received for their energy efficiency. But the newest of the technology bunch, LED, is an improvement of LCDs; continual developments make these screens thinner, allowing for the greatest portability and a luminous look. Below is an explanation of LED technology and how it compares to other display types.

led-tv

led-tv

What are LED TVs?

Manufacturers describe LED TVs as an LCD set with a different backlighting system. LCDs use fluorescent lamps as backlighting, while LEDs are composed of light emitting diodes. In technological terms, LEDs radiate light when a current passes through its semiconductor diodes in a forward motion. This process involves electrons that are transmitted via a semi-conductor and are placed in various energy levels during transit. The electrons are illuminated after they reach a lower energy level, which produces television images. Experts say that the larger LED color displays use a three-LED pixel.

LED Look

Besides television, LED technology is also found in numerous applications, including traffic lights, digital clocks, watches, and microwave oven time displays. In TVs, LED screens are efficient because they are generally produced in very thin screen sizes, which is good for portability purposes. Advancements on the backlighting technology allow clear picture quality and low power consumption (in contrast to high-energy plasmas). LEDs can also be viewed from a wide angle, and backlighting produces a darker, black coloring. Companies claim that the lifespan of these televisions depends on the life of the backlighting, and can last over 100,000 hours. Because of their slim look and good color contrast, LEDs are generally most expensive of the screen options. LEDs are often used as computer monitors and are a popular screen choice for video game use.

LED vs. LCD and Plasma Compositions

Plasma screens were introduced to the market around the same time as LCDs (which arrived later). LCD screens are backlit with a fluorescent light, and operate by the same technology as a pocket calculator. Generally, LCDs are considered to be the least eco-friendly technology because mercury is involved in producing images. While traditional LCDs feature different styles of florescent lights, LED models have different backlighting styles.

Plasma television screens are usually thicker than LCD and LED sets. They work by using a gas that turns into plasma via an electronic current. The pictures produced on plasmas are usually highest quality (and are generally considered better than the two other mediums), and can be viewed from very wide angles, which is why these screens are a popular consumer choice. The drawback of plasmas (in comparison to LEDs) is that they are bulkier and use a high amount of energy consumption to light up, although they are generally cheaper. Plasmas are also prone to screen glare. Overall, plasmas are considered to have a better contrast picture than LEDs. Because these televisions use miniscule plasma cells that produce a picture with an electrical charge, they can deactivate the source of light off parts of the screen, according to manufacturers. This produces a high-quality contrast (darker blacks and brighter light colors).

Variations of LEDs

Manufacturers produce a few varieties of LEDs. These devices can be maneuvered to produce a dimming effect, which involves a LED light panel that may be controlled (individually or via banks) to improve the television contrast. LED edge lighting is another option, and this works by surrounding the edge of the panel with LED lights. Generally, the LED edge models are the slimmest screens available. The lights on these screens are equally distributed at the edges of the screen (or the panel) which allows for a very thin frame. The frame, in turn, is effective for applications such as portable touch screen devices.

One of the newest technologies, and perhaps the reason why LED screens are such distinguishable modern products, is the capability of Organic Light Emitting Diodes (OLED) technology. These devices are “emissive” as thin organic layers act as a source of light. An electro-luminescent light is produced from the organic carbon material used, creating a bright picture and the capability for an extremely thin screen, bright pictures and a low energy consumption.

Original:LED TV – Technology with a Bright Future

 

Remote RGB controller with speed

30 Mar

Remote RGB controller with speed

Key Features

Stores and plays 16 different pre-programmed color patterns Can manage the color pattern or speed over the remote or set the parameter on the controller by pressing button “MODE” or “SPEED

Features & Benefits

Widely used as a adjuster to control the color changing effects, it is suitable for LED Strips light, LED Module and so on. 
Deft™ FRC-V100 Remote Controller is an enhanced hardware controller to drive low-voltage RGB products, such as Signage™ blocks, Linear™ Ribbon, Cove™ neon and ropes.
Deft™ FRC-V100-L stores and plays 16 different pre-programmed color patterns.  It adopts PWM (pulse width modulation) technology, at 315KHZ frequency; it enables you to manage the color pattern or speed over the remote (in standard selling package). You can also set the parameter on the controller by pressing button “MODE” or “SPEED”.

Data | Specifications

Working voltage 12V DC (100W), 24V DC (200W)
Current:8A
Dimension:L130*W60*H35mm
Weight:190g

Applications

It is suitable for low-voltage RGB products such as LED Strips light& LED Module.

 

Brighten Up Your Yard With Outdoor Lighting

30 Mar

OK, so you have finally finished landscaping your yard and it is beautiful…as long as the sun is up. Wouldn’t you like to enjoy the beauty after the sun goes down as well? The easiest way is with low-voltage landscape lighting. You have put a lot of time and thought into planning the placement of your trees, flowers, deck and pond. Now it’s time to plan your outdoor lighting. Decorative outdoor lighting is easy to plan if you take it one step at a time.

· The first step in planning your project is to decide what you want to illuminate and the effect you want. These two things will determine the type of lights you need and their placement. There are many different lighting techniques that will create different effects.

Spot Lighting showcases interesting features such as trees, shrubs, architecture and statuaries.
Shadow Lighting highlights interesting shapes or branch structure by casting a shadow on the surface behind the object being highlighted.
Underwater Lighting enhances the beauty of a pond, swimming pool or fountain.
Grazing brings out the texture of fences, chimneys, walls or other masonry.
Moon Lighting creates the soft effect of moonlight filtering down through tree branches.
Walkway Lighting adds safety, visibility and security for walking and can also highlight plants and shrubs along the walkway.
Step Lighting adds beauty to your decks and landscaping while allowing guests to navigate steps safely.
Security or Motion Control Lighting will help deter against crime and unwanted pests by eliminating dark areas where intruders can hide.
Silhouetting highlights objects with interesting shapes or plants with interesting branch structure by silhouetting the object on the surface behind it.
Sign Lighting will keep your signs illuminated and useful when it is dark outside.
Down Lighting simulates natural light for entertaining as well as illuminating for safety and security.
Up Lighting dramatically highlights the beauty of flags, statuary, trees and architectural designs, especially ones that are large or flowering.
Spread Lighting illuminates flowerbeds, ground cover and low shrubs. It can also be used underwater to illuminate an ornamental pond.
Deck lighting will bring your deck to life at night while it enables guests to navigate your deck safely. Deck fixtures can be installed on posts, below benches and railings or in step risers.

· Test the placement of your lights by having a friend help you by shining a flashlight on objects you think you want to light. Make notes of what type of lighting is best in each location as well as the angle that best achieves the effect you want. Also, make sure the light isn’t going to shine in your neighbor’s window.

· Sketch a “bird’s eye view” of your yard on graph paper showing main features such as driveways, gardens, walkways, trees and walls. Then plot where each fixture will be placed.

· Decide if you want to use low-voltage or solar lighting. Solar outdoor lighting is good for aesthetic purposes and requires no wiring because they run off their own power. Low-voltage outdoor lighting is brighter than solar lighting and they don’t require sunlight for power.

· Once you decide how many and which types of lights you need, decide if you want to purchase lighting kits or a custom system. Kits are an easy way to get started and usually contain several types of lights, cable, connectors and controls. All of the necessary components can also be purchased separately so you can customize your landscape lighting project.

· Make sure you get the right size power pack for your project. A salesperson at your hardware store can help you determine which power pack you need. You’ll need to add up the total wattage of your lights and make sure the total wattage is less than 100% of the power pack rating. 80% is a good rule of thumb so you can add more lighting in the future.

Now that you’ve planned your outdoor lighting project, you just need to install it and fire up the barbeque.

Summary: There are many types of outdoor lighting that will compliment and illuminate your home and landscaping. Low-voltage landscape lighting is one of the easiest to install and most efficient to operate.

Original:Brighten Up Your Yard With Outdoor Lighting
Author: Dave Rongey

 
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Posted in Products

 

TV Industry Faces Drastic LED Shortage

30 Mar

According to a new report from the iSuppli research firm,  the television industry will soon experience “an acute undersupply” of LEDs, the solid-state lighting source used in LCD TVs to create superior video imagery compared to standard LCD TVs, which use fluorescent lamps.

The problem is particularly affecting the TV industry, which uses many more LED modules than in computer monitors. While notebook computer screens typically use 50 LEDs, an LCD TV needs between 300 and 500 per panel, all of which must create a uniform level of brightness.

The popularity of LED-backlit LCD TVs is creating the shortage. LED consumption rose from 57 billion units in 2008 to 63 billion units in 2009. Current industry capacity is 75 billion units, which means that new LED fabrication plants must be built if prices are not to rise. If that doesn’t occur, iSuppli predicts that there will be a “drastic undersupply” of LEDs this year.

The company expects LED shipments to move from 63 billion this year, to 104 billion in 2011, and then to 166 billion in 2013 or almost triple the shipments of last year.

To solve the supply problem, television manufacturers are looking for ways to reduce the number of LEDs used in each LCD TV, and to bring production in-house to better control availability.

But until they’re successful, don’t expect to see a rapid decline in retail prices for LED-backlit LCD TVs, at least in the short term.
Original:TV Industry Faces Drastic LED Shortage
Author: ERIC A. TAUB

 
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Posted in Products

 

The first 3D TV in Full LED technology by LG

30 Mar

LG Electronics Launches Full TV LED LG LX9500 displays the image in three dimensions. The LG LX9500 has just been unveiled in South Korea.

Full Screen TV LG LX9500 3D LED is lit entirely with LEDs located directly behind it (55-inch model has to 1.200), resulting in clear images with exceptional clarity. Dynamic Contrast Ratio of 000:1 and 10 000 TruMotion 400Hz ensure enjoyment of movies and programs in three dimensions.

“Since May this year the world premiere of Full LED TV in 3D will have its continuation on the Polish market. This year we will offer consumers a wide range of Polish products 3D entertainment offering so far known only from the cinema “- said Ireneusz Smaga, vice president of sales and marketing for LG Electronics Poland.
The LG LX9500 is the first TV set that supports 3D Multi Picture. It allows displaying the images captured with a 3D camera without the need to advance for them to convert to your computer.

Viewing content in 3D on your TV LG LX9500 requires the use of active shutter glasses (model AG-S100), which add depth image through the lens to block alternating synchronization and refresh the screen. These sunglasses, loaded via a USB port, allowing up to 40 hours of continuous TV viewing.

The company will also propose that both glasses with polarized lenses, and with an active shutter. The portfolio of LG Electronics in 2010 will also include new plasma TVs, Blu-ray and the world’s first 3D full HD projectors.

LG Televisions Infinia 3D will be available in versions with screen diagonal of 47 and 55 inches. First will be put on sale in Korea, and the beginning of May there will be also in North America, Europe, CIS countries and other key markets.

Since May 2010, Infinia 3D TVs LG LX9500 will be available on the market.

LG LX9500 Specifications:
• 3D TV (with an active shutter glasses)
• Full LED Technology featuring Slim local extinction Spot Control
• Full HD 1080p picture
• Dynamic Contrast 000:1 10 000
• Technology TruMotion 400 Hz
• Function of the Image Wizard II
• Layered gradations of color under varying light conditions
• Invisible speakers (10 W + 10 W + 5 W)
• Infinite Sound Technology
• Clear Voice Technology II
• System NetCast
• Skype function (function with optional video conferencing camera video)
• Wireless AV link technology
• DLNA Ready (with optional dongle DLNA)
• USB 2.0
• Support for DivX HD files, MP3, JPEG, MPO
• Supports HDMI 1.4
• Intelligent Sensor
• Energy Saving Smart Plus
• Certificate ECO Flower

The first 3D TV in Full LED technology by LG
By Anton

 
 
 
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