OLED cathode process and packaging of the critical process Character LCD Modules

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High-resolution OLED panels, subtle between the cathode and the cathode isolation, generally used for mushroom configuration method (Mushroomstructureapproach), this process is similar to negative photoresist development of printing technology. In negative photoresist developing process, the number of process variation on factors can affect the quality and yield of the cathode. For example, the volume resistivity, dielectric constant, high-resolution, high Tg, low critical dimension (CD) loss and with ITO or other organic layer Mount interface.Character LCD Modules

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⑴ absorbent material: the life cycle of ships OLED vulnerable to ambient moisture and oxygen is reduced. The source of water vapor is mainly divided into two types: one through the external environment to penetrate into the inner component, and the other is a water vapor absorption of each layer material in the OLED technology. In order to reduce the water vapor to enter the component or eliminate adsorbed water from the process gas, ships most commonly used material for the absorbent material (Desiccant). Desiccant use of chemical adsorption or physical adsorption of the way to capture the water molecules move freely, in order to achieve the object of the assembly for removing water vapor.
(2) process and equipment development: the process of the packaging process as shown below, Desiccant on the cover and smooth the cover and the substrate bonding, to be in a vacuum environment or cavity filled is not carried out under inert gas, such as nitrogen . It is noteworthy that, how to make the cover and the substrate both part of the process of convergence more efficient, reduce the cost of the packaging process, and reduce packaging time in order to achieve an optimal level of production rate, and packaging process and equipment technology development has become a major target .graphic lcd display module