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Archive for January, 2012

Are LED Light Bulbs Worth The High Cost

10 Jan

The Republicans caved. In order to get the government spending bill passed, on Dec. 16, Republicans agreed to put on hold the implementation of a bill that would require more efficient light bulbs which, in the minds of many, meant the end of the much loved (and cheap) incandescent bulb. Proponents of the bill were quick to say that the incandescent bulb would still be available but in a more efficient form, and opponents argued that consumers should decide what kind of bulbs they buy instead of Congress.

TUTORIAL: Economics Basics

According to the U.S. Department of Energy, consumers did decide. Energy and Commerce Secretary Fred Upton said, “We heard the message loud and clear from Americans who don’t want government standards determining how they light their homes.”

Americans are clearly opposed to the bill, but is it time we unshackle ourselves from the old incandescent bulbs and embrace new technology, and will our wallets thank us?

Is the Light Still Weird?

If you remember when compact florescent light bulbs first hit the market, the light they emitted was, for a lack of a more elegant term, weird. It was kind of green but also kind of white. It wasn’t pleasing to the eye and as it warmed up, the light changed. This caused many to abandon the technology and go back to the incandescent bulb.

The new compact fluorescent bulbs are nearly indistinguishable from the old incandescent bulbs but once again, they’re being abandoned for the new LED light bulb. LEDs power the new traffic lights, flashlights and TVs but now they can power your home and the light is described as a soft white light similar to incandescent bulbs.

The Calculations

Unless there’s a good reason to purchase these bulbs, why pay the extra money? LED light bulbs are expensive. Prices start at $10 for a standard bulb and floodlights can cost as much as $100, but the cost of a bulb isn’t as important as the money you pay to operate it.

First, let’s assume that we’re looking for the best way to produce 50,000 hours of light equal to an incandescent 100 watt light bulb. One, 100 watt incandescent bulb costs about 40 cents and to produce 50,000 hours of light, you’ll need approximately 50 bulbs based on a life of 1,000 hours. That makes the cost of the bulbs about $20. Since an incandescent bulb requires 100 watts equal to 5,000 kilowatt hours of energy, that will cost more than $500 making the total approximate cost of our 50,000 hours of energy, $520.

Instead of 40 cents for the incandescent bulb, we had to pay $40 for the LED equivalent which, admittedly, is quite a case of sticker shock but to get 50,000 hours of light, we’re only going to need two bulbs that use no more than 11 watts of energy equaling 540 kilowatt hours. The cost to power those bulbs is only about $58. Although we paid $80 up front, we had a total cost of only $138 or a 73% savings over the incandescent equivalent.

The Bottom Line

The above calculations will vary largely depending on the cost of the electricity as well as the current prices of light bulbs, but the cost savings of LED bulbs is clear. There’s no doubt that the upfront cost of the more efficient bulbs is a stumbling block for some, if you can afford it, but the new LED bulbs offer a dramatic cost savings over the life of the bulb. How many light bulbs do you have in your home that could be replaced by LEDs?

 

LG Display Announces World’s Largest OLED TV Panel Measuring 55 Inches

10 Jan

LG Display [NYSE: LPL, KRX: 034220], a leading innovator of thin-film transistor liquid crystal display (TFT-LCD) technology, today announced that it has developed the world’s largest 55-inch OLED(Organic Light Emitting Diodes) TV panel. The 55-inch panel is a significant step forward in the popularization of OLED TVs and demonstrates the effective application of AM OLED technology to larger panel sizes at a more cost efficient level.

“Our objective has always been to actively define and lead emerging display technology markets,” said Dr. Sang Beom Han, CEO and Executive Vice President of LG Display. “Although OLED technology is seen as the future of TV display, the technology has been limited to smaller display sizes and by high costs, until now. LG Display’s 55-inch OLED TV panel has overcome these barriers.”

Superior Image Quality in an Ultra Thin Design

LG Display’s 55 inch OLED TV panel produces remarkable image quality with no after image due to its high reaction velocity, as well as high contrast ratio of over 100,000:1 and wider color gamut than that produced by LCD panels.

OLED, a medium that controls pixels is a departure from LCD panels which utilize liquid crystals. The new technology allows light emitting diodes to self-generate light and features a reaction velocity to electric signals over 1000 times faster than liquid crystal.

The environmentally conscious will also appreciate LG Display’s 55 inch OLED TV panel. While light sources in backlight units, like LCD panels, must always be kept on, the OLED panel allows diodes to be turned on or off which enables lower power consumption than conventional LCD panels.

With no need for a special light source, LG Display’s 55 inch OLED TV panel is also able to utilize a simplified structure thinner than that of a pen (5mm), and lighter than LCD panels. The panel’s minimalist structure also allows for the realization of unique design elements.

Advancing the Popularization of OLED TVs

Although industry watchers anticipate OLED as the future of TV display, to date, the technology has faced challenges due to limitations on the sizes of displays it can be applied to and a high level of investment required. LG Display has successfully addressed these issues with its 55 inch OLED TV panel.

The panel adopts an Oxide TFT technology for backplane which is different from a Low Temperature Poly Silicon (LTPS) type generally used in existing small-sized OLED panels. The Oxide TFT type that LG Display utilizes is similar to the existing TFT process, with the simple difference lying in replacing Amorphous Silicon with Oxide. Moreover, the Oxide TFT type produces identical image quality to high performance of LTPS base panels at significantly reduced investment levels.

Additionally, LG Display uses White OLED (WOLED). WOLED vertically accumulates red, green, and blue diodes. With white color light emitting from the diode, it displays screen information through color layers below the TFT base panel, which leads to a lower error rate, higher productivity, and a clearer Ultra Definition screen via the benefits of small pixels. Further, it is possible to realize identical colors in diverse angles via color information displayed through a thin layer. Lower electricity consumption in web browsing environments for smart TVs is another key strength of WOLED.

Showing at CES 2012

The world’s first 55 inch OLED TV panel from LG Display will be made available for showing to select media and customers at a private booth starting on January 9 in Las Vegas through the end of CES 2012.

 
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Posted in OLED

 

LED Light Bulbs Crafted for The Stage Performance Platform

03 Jan

Under no circumstances have LED lights been lower priced for stage and theater lighting effects. Although not without their constraints, LEDs are an important technology advancement for lighting developers. LEDs are high efficiency, modest, highly customizable and are the greener alternative to regular lighting products.

Power Consumption. LED lights implement about 1/10 of the electrical energy input employed by conventional lighting units. Because electrical consumption is small, you need to use a lot of LED light bulbs and plug it straight to a typical local socket. Most recent high-powered LED light bulbs are very shiny, considering the electrical energy input.

Heat production. High-powered LED lamps and bulbs do release heat, but the heat developed is still substantially less than what is manufactured by standard lighting. LED light bulbs use heat sinks to resolve the temperature and housing element that reduces the threat of burns for the technician.

Colors. Additive color mixing is the technique of blending different-colored lights to convert the stage performance into a rainbow of colors. Red, Green and Blue are the primary lighting colors.

Size. LED light bulbs are portable, and the housing used is also made of lightweight substances. Aggregates of light products can be turned out to be a custom lighting fixture, great for light shows and special effects.

Types. LED lights appear in long strips together with a multitude of the three prime lighting tints, which are often used for lighting up leveled surfaces like partitions. LEDs in minimal form create a beam of light the same as standard can or floodlights because they are used for regular stage lighting solutions. Custom made stage LED lights are for sale in all kinds and concepts. A moving monitor effect can be simulated by means of managed LED lights.

Control. DMX channels regulate the principal lighting colors Red, Green and Blue, through separate channels for maintaining effects and severity. All LED light bulbs are connected together as a program, but unrelated LED lights works extremely well with another controller for transforming colors or if you wish a particular lighting outcome.

Considerations. LED lighting fixtures for the stage have largest benefits, but what’s the catch? LED lamps are made up of many sources lights, so you simply cannot get a sharp spotlight. Good quality white light is also very hard to reach with LEDs. LEDs are brilliant in terms of strength for power input, but they’re still less intense as traditional PAR cans. Even though color mixes clearly, light spreading is a problem over long distances with LED lights, as they simply do not have reflectors or even lenses.

You can get inexpensive LED light bulbs for the stage all over the web, but you tackle the risk of elevating the down sides outlined above. Manufacturing setbacks like shortened life are ordinary with LED light bulbs made of poor quality. Before choosing, you must ask all the questions and do your research. Check the requirements and the certifications on the label. It’s important to buy from a respected source to be certain of flawless operation. It may run you a small investment, but your LED lights will invariably deliver.

 
 
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