The origin of LED and oled materials

With the continuous advancement of technology, new breakthroughs have been made in the materials used to make screens. There are two main types of mobile phone screens on the market today: OLED screens and LCD screens. Let's take a look at the origin of these two materials!

OLED research actually originated from an accidental discovery. One night in 1979, Dr. CW Tang, a Chinese scientist who was engaged in scientific research at Kodak in the United States, suddenly remembered something he had forgotten in the laboratory on his way home. After returning, he found a bright light in the dark. s things. When I turned on the light, I found that it was an organic storage battery that was experimenting. OLED research began, Dr. Deng is also known as the father of OLED. OLED was officially commercialized in 1987, when Kodak introduced an OLED double-layer device, which showed the excellent performance of OLED: thinner, darker, and more responsive. Subsequently, more and more international giants joined the research and development of OLED.

LCD may be a new term for many users, but the history of this technology may be far beyond our imagination. As early as the end of the 19th century, Austrian botanists discovered liquid crystals, that is, liquid crystals, which means that a substance has both the fluidity of liquids and a certain arrangement characteristics similar to crystals. Under the action of the electric field, the arrangement of the liquid crystal molecules will change, thus affecting its optical properties. This phenomenon is called the electro-optic effect. Using the electro-optical effect of liquid crystals, British scientists created the first liquid crystal display (LCD) in the last century.

 At this stage, OLED screens occupy the market trend. OLED screens have many advantages over traditional LCD screens. Because of this, many mobile phone manufacturers have shifted their focus from LCD screens to OLED screens. Therefore, many mobile phones now use OLED screens.