I believe that everyone is familiar with the term OLED. Many of our mobile phones and TVs have OLED screens installed. German Spanish scientists have recently made breakthroughs in the field of OLED technology, only need to make some adjustments during manufacturing, OLED screens can become more energy-efficient and longer life.
SebasTIan Reineke, professor of organic semiconductors at the University of Technology in Dresden, Germany, said: “The screen will be more energy efficient and the service life will be extended.†The technology was invented by the Dresden University of Technology and the Autonomous University of Barcelona.
A few years ago, smartphones introduced OLED screens, and Apple iPhone X installed OLED screens. Compared to LCDs, OLED screens are thinner, lighter, and brighter. However, OLED also has shortcomings, and its life span is shorter. How do scientists improve OLED screens? They didn't make screens with new organic polymer materials, and they didn't redesign the screen structure, just changing the OLED manufacturing process.
It turns out that when the raw material is deposited on the substrate, it is only necessary to increase the temperature to improve the OLED screen. When the temperature reaches a certain condition, the material changes from a glassy state to a rubbery state. For many organic materials, this temperature is about 100 degrees Celsius. Researchers can create "ultra-stable glass" by heating the polymer to a temperature of 80-90% of the conversion temperature.
In general, polymers used in OLEDs are loose in combination and are not perfectly aligned, and may react with each other. If it is "ultra-stable glass", the molecular arrangement is more perfect and it is in the lowest energy consumption state, so it will be more stable.
If defects occur, the lifetime of the OLED screen will be shortened, and the probability of defects in the ultra-stable glass is much lower. Moreover, the vibration amplitude of this glass will be much smaller, so the OLED screen will generate fewer photons. These photons will fuse with the charge carriers, which will adversely affect the screen. Not only that, in the new screen, the excess energy will be heat. The form of non-light is scattered.
The researchers tested with four commonly used phosphorescent emitters and found that life was extended by 15% and energy savings by 15%. If you install it on your mobile phone, how much longer can you extend your battery life? There are many factors that determine the endurance. Different ways of using will also affect the battery life. Reineke said: "For each product, life is an important consideration, such as display, solid state lighting, if you can extend the life, the market will accept."
Next, researchers will test new technologies with more OLED materials. Then it depends on whether the heating technology can be used in the manufacturing process without adding too much cost. Reineke and German OLED manufacturer Cynora are testing new technologies.
AC power supply is a kind of power supply that converts the input mains or DC input into a pure sine wave output after AC-DC-AC or DC-AC conversion. The ideal AC power supply is characterized by stable frequency, stable voltage, zero internal resistance and pure sine wave output voltage wave (without distortion). Mainly used for power grid simulation tests conducted by various electrical appliance manufacturers on electrical appliances according to the voltage/frequency requirements of different countries, various AC motors, AC transformers, aircraft & mechanical equipment and other electronic devices that require pure, regulated and frequency-stabilized output.
Our AC power supply mainly includes three types
1. AC Power Supplies converting the input mains AC by AC-DC-AC, output voltage and frequency are stable and adjustable with pure sine wave output waveform, so called: Variable Frequency AC Power Supplies.
2. AC Power Supplies converting the DC output of the battery and other DC equipment by DC-AC, giving an AC sinusoidal output with stable output voltage and frequency. so called: Inversion AC Power Supplies.
3. AC Power Supplies converting the input mains AC by AC-DC-AC, giving a variable voltage AC output at constant 400Hz output frequency ultra-high output frequency stability. so called: Intermediate Frequency AC Power Supplies.
4. According to the difference in the number of output phases, the AC Power Supplies can be divided into single-phase output AC power supplies and three-phase output AC power supplies.
Different from Variac and AC voltage regulators, our AC power supplies support the setting of output voltage and frequency and has superior high precision, high stability, and high efficiency stable frequency AC output, not only for AC power conversion but also for AC high precision test purpose.
Through the friendly operation panel, you can read the output data such as output voltage, output current, output power, power factor, etc., providing accurate data records for your test, and can add RS485 interfaces as standard, following the MODBUS-RTU international communication protocol, which can realize remote control and operating status monitoring of the power supplies.
Our AC Power Supplies have comprehensive protection functions, such as: over voltage, over current, over temperature and short circuit protections, which can protect the AC power supplies and DUT from damages.
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Yangzhou IdealTek Electronics Co., Ltd. , https://www.idealtekpower.com