source:Industry Trends release time:2023-08-09 Hits: Popular:led screen wholesaler
OLED is an abbreviation for Organic Light Emitting Diode in English, translated as organic light emitting diode or organic light emitting display. In fact, this luminescence principle was discovered as early as 1936, but it was not until Kodak introduced OLED double-layer devices in 1987 that OLED gained attention as a commercially viable and high-performance flat panel display technology. More than 100 research institutions and enterprises worldwide have invested in the research and production of OLEDs, including display giants such as Samsung, LG, Philips, Sony, and others in the market. Overall, the industrialization of OLED has begun, with monochrome, multicolor, and color devices reaching the level of mass production, while large-sized full color devices are still in the research and development stage.
Many netizens easily associate OLED with LED backlight, which is highly hyped by manufacturers. In fact, OLED and LED backlight are completely different display technologies. OLED emits light from organic thin films themselves driven by an electric current. The light emitted can be monochromatic, such as red, green, blue, and white, and can also achieve full color effects. So OLED is a brand new luminescence principle different from CRT, LED, and LCD technology. Its luminescence mechanism is: driven by the external voltage, the electrons and holes injected by the electrode compound in the organic material to release energy, and transfer the energy to the molecule of the organic light-emitting substance, which is excited and transitions from the ground state to the Excited state. When the excited molecule returns to the ground state, the radiation transitions to produce luminescence. (Tip: What is a hole? An electrically neutral atom has an equal number of positively charged protons and negatively charged electrons. Due to the absence of a negatively charged electron, there will be a positively charged vacancy, which is a hole.)
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