Built-screen design two major problems oled module

1. Display Mode
Display mode refers to the orientation of the substrate surface treatment, the LCD screen of the liquid crystal director within the arrangement of the different structural deformation occurs. TFT-LCD display modes using long twist angle of 90 degrees twisted arrangement (TN) mode. In recent years, with the progress of wide viewing angle, plane control (IPS) mode, a vertical alignment (VA) mode, optically compensated bend from (OCB) mode have been widely adopted. TN mode is characterized by high yield, mature technology and low cost. It can improve the viewing angle characteristics of phase difference plate, suitable for computer monitors. IPS mode, VA mode, COB mode are all wide viewing angle technology, response speed, aperture ratio, yield, cost its own characteristics. One of the IPS mode, the VA mode in particular, suitable for LCD TV, but the cost is higher. OLED modules
2. Key raw materials
Key alignment film material, a liquid crystal and a polarizing plate three. Alignment film material (PI) is currently entirely by the Japanese monopoly, there are major manufacturers such as Nissan Chemical and JSR 5. Nissan Chemical and JSR various display modes which are applicable to the alignment film material. Wherein the material used in the IPS mode Nissan Chemical based, VA mode, the materials used in the JSR-based. Liquid crystal material is now largely from Japan and Germany meruku chi-so production and supply market. In addition to Sharp LCD TV development of the latest LCD ASV. The liquid crystal material has two main selection criteria. A low-voltage drive, requiring a range of 3 to 5 volts, and preferably driven by the same voltage and chip. Another is to reduce viscosity and improve the response speed to fit the needs of the LCD TV. In addition, the current fifth-generation LCD production line using pre-drops (ODF) technology also requires the viscosity of the liquid crystal can be relatively low. Graphic LCD Module
Polarizer of the major manufacturers a total of six. Japan 4 Korea Taiwan each one. Nitto Denko which in large size (desktop monitors and LCD TVs) in relatively strong, Sumitomo Chemical in small and medium size (car, mobile phone) has an advantage. Mainly through the polarizer and reflective / semi-transmissive type two kinds. Usually after anti-glare surface (AG) or anti-reflection (AR) process.