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OLED instead of incandescent bulbs

12.06.2005

The Dutch company Philips and the German company Novaled have developed a white OLED with a brightness of 1000 cd/m2 and a record efficiency of 25 lm/W.

Scientists from the Philips Lighting Division selected the materials, developed the optical matching technology and OLED topology, and Novaled developed the doping technology. According to Klaas Vegter, chief technologist at Philips Lighting, this development showed the possibilities of OLED in terms of their use in lighting applications.

The results of the research will be applied in future developments, ongoing projects and the recently launched European project OLLA (Organic LEDs for Lighting Applications - organic light emitting diodes in lighting applications), in which both companies participate.

<< Back: ARCHOS launches ultra-compact audio player with 3 GB hard drive 13.06.2005

>> Forward: 40" OLED panel for ultra-thin displays and TVs 12.06.2005

Latest news of science and technology, new electronics:

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Major risk factor for gambling addiction 07.05.2024

Computer games are becoming an increasingly popular form of entertainment among teenagers, but the associated risk of gaming addiction remains a significant problem. American scientists conducted a study to determine the main factors contributing to this addiction and offer recommendations for its prevention. Over the course of six years, 385 teenagers were followed to find out what factors may predispose them to gambling addiction. The results showed that 90% of study participants were not at risk of addiction, while 10% became gambling addicts. It turned out that the key factor in the onset of gambling addiction is a low level of prosocial behavior. Teenagers with a low level of prosocial behavior do not show interest in the help and support of others, which can lead to a loss of contact with the real world and a deepening dependence on virtual reality offered by computer games. Based on these results, scientists ... >>

Traffic noise delays the growth of chicks 06.05.2024

The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>

Wireless speaker Samsung Music Frame HW-LS60D 06.05.2024

In the world of modern audio technology, manufacturers strive not only for impeccable sound quality, but also for combining functionality with aesthetics. One of the latest innovative steps in this direction is the new Samsung Music Frame HW-LS60D wireless speaker system, presented at the 2024 World of Samsung event. The Samsung HW-LS60D is more than just a speaker system, it's the art of frame-style sound. The combination of a 6-speaker system with Dolby Atmos support and a stylish photo frame design makes this product the perfect addition to any interior. The new Samsung Music Frame features advanced technologies including Adaptive Audio that delivers clear dialogue at any volume level, and automatic room optimization for rich audio reproduction. With support for Spotify, Tidal Hi-Fi and Bluetooth 5.2 connections, as well as smart assistant integration, this speaker is ready to satisfy your ... >>

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Random news from the Archive

New DC/DC converter from Texas Instruments 18.07.2007

Texas Instruments introduced the TPS40K, a universal synchronous buck converter that greatly simplifies the power supply of LCD TVs and authorized broadcast set-top boxes that use digital signal processors (DSPs) and programmable FPGA logic. The TPS40195 supports a number of features to improve power performance in systems requiring 4,5V to 20V supply voltages. For example, an integrated circuit uses a converted input voltage for its own power supply, eliminating the need for additional voltages to power the IC.

The TPS40195 controller, which is housed in a 16-pin TSSOP package, has a bi-directional clock pin that allows anti-phase operation with another buck controller. This configuration reduces the capacitance of large capacitors and saves board size and cost when operating with 5V and 12V supplies.

Also, if this pin is connected to the main clock source, then the TPS40195 emits less electromagnetic signal. The controller has excellent current detection capabilities when operating with low duty cycles and limits the power delivered to the load by detecting overcurrent in each high and low MOSFET.

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