Views: 127 Author: Site Editor Publish Time: 2021-09-12 Origin: Site
Uyanchem has a team of experts who have been engaged in the research and development of material molecules for a long time. At the same time, we has established contacts and cooperation with many domestic universities and scientific research institutes. We can provide custom synthesis from the laboratory scale to commercial production.
What is OLED？
In 1978, since a double-layer, high-efficiency organic electroluminescent device (OLED) was reported by Tang et al., compared with CRT, LCD, PDP and inorganic light-emitting diodes, OLED has many advantages, such as high brightness and high efficiency. , Wide viewing angle, autonomous light-emitting, all-solid-state, ultra-thin and ultra-light, simple production process, faster response speed, can achieve full-color display and good mechanical processing performance, can be made into displays of different shapes, etc., in the past Over the past 30 years, it has attracted widespread attention and research, so OLED is known as the most ideal and most promising next-generation flat panel display technology after LCD and PDP.
How do OLEDs work?
The main component in an OLED display is the OLED emitter - an organic (carbon-based) material that emits light when electricity is applied. The basic structure of an OLED is an emissive layer sandwiched between a cathode (which injects electrons) and an anode (which removes electrons).
Advantages of OLED
1) Active light emission, wide viewing angle: no viewing angle limit, viewing angle greater than 170°, no backlight source;
2) High resolution: Active matrix OLED provides solutions for the high information content of video and graphics;
(3) High brightness: no need for polarizer and diffuser;
(4) High luminous efficiency: high luminous efficiency makes it have high brightness and low power consumption;
(5) Fast response speed: 10 microseconds, 100-1000 times faster than 15-18 millisecond LCD, which can improve the image refresh speed, and has a good effect when displaying fast dynamic images;
(6) Wide operating temperature range: generally -40-75°C, with good temperature characteristics, and the luminous performance is not affected by temperature. It can work at a low temperature of -40°C and can meet many low-temperature conditions. Liquid crystal materials at lower temperatures, no deflection will occur.
(7) Low driving voltage and power loss: the driving voltage is generally 2-10 volts, and the power consumption is 350-400 milliwatts at a brightness of 150cd/m2;
(8) Ultra-light and ultra-thin: the volume is 1/3 of LCD, the thickness is half of LCD, and the weight is 20-50% lighter than LCD;
(9) Organic materials have good mechanical properties and are easy to process into various shapes; resins can be used as substrates to prepare foldable displays.
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