LED production of the organic layer coating to the grass-roots level are three ways TFT Display Module

OLED production process, the most important one ring The organic layer coating in accordance with the requirements of the driving matrix to primary key to the formation of the light emitting display unit. OLED is a solid material, the development of high-precision coating technology is the key constraints OLED products of. To complete this work in general, there are three ways:
1, vacuum deposition or vacuum thermal evaporation (VTE)
Organic molecules in the vacuum chamber body will be a slight heating (evaporation) in the form of a thin film, then these molecules condense on the lower temperature on the grass. This approach for a wide range, can grow almost all compound and alloy semiconductors is very suitable for the growth of a variety of heterostructure materials, ultra-thin epitaxial layer can be grown and can get very steep interfacial transition, growth is easy to control, can grow purity high material, good uniformity of epitaxial layer of a large area can be carried out large-scale production, but for the low efficiency of OLED products.
2, an organic vapor phase deposition (OVPD)TFT LCD Module
The OVPD (Organic vapor deposition) is a research and development, the process design by the German AIXTRON improving manufacturability can reduce manufacturing costs relative to the evaporation technique. The technology to open a seen as the upgrade of VTE. Has excellent repeatability and process stability and significant film uniformity and precise control of doping for the mass production of high-yield laid the foundation, while reducing maintenance and cleaning requirements, which downgraded material consumption, improve material utilization rate of enormous potential.
The OVPD in a low-pressure hot-wall reaction chamber, the carrier gas evaporation of organic molecules transported to the low-temperature grassroots, organic molecules will then be condensed into a film-like. Use the carrier gas can improve the efficiency and reduce the cost of OLED. However, this technique also can not break a large area glass substrate and the color OLED prepared in many bottlenecks.I2C Lcd Module
3, the ink-jet printing, cited in emerging technologies such as
The OLED layer coating, traditional vapor deposition technology-based, emerging transfer and printing technology based. For example, using inkjet technology OLED can be sprayed on to the grass-roots level, like printing ink is sprayed onto the paper as.
In short, as the main new the OLED layer coating technology to a variety of printing technology is becoming the industry growing power and equipment line. These technologies greatly reduce the the OLED production costs, is also the OLED print to a very large surface area of ​​the film, for the production of large-sized display, for example, 80-inch large-screen TVs. These technology breakthroughs, will become a large-scale OLED products practical basis.