High on behalf of the domestic LCD glass substrate lines have been launched highlighting

High on behalf of the domestic LCD glass substrate lines have been launched highlighting

Guangzhou LG eighth-BOE invest 28 billion in Beijing build LCD panel 8 on behalf of the line, Nanjing Sharp 30 billion yuan of 8 on behalf of the line ... ... with our high-generation LCD panel production line put into operation, the LCD panel the upper glass substrate capacity as a focus.

The current optical display thin film transistor liquid crystal display (TFT-LCD) flat panel display technology has become mainstream. China has 400 million domestic large screen flat-panel TV market, large-screen flat-panel TV manufacturing core components, constructing the complete TFT-LCD industrial chain manufacturing is based on China's economic development is of great strategic significance.

TFT-LCD glass panel substrate is an important component, accounting for LCD TV 7% of raw material costs, accounting for the proportion of LCD panels cost about 17% in the TFT-LCD industry, the role of silicon in the semiconductor industry's position as important. And it is a thin piece of glass, and has become the soft underbelly of LCD TV industry.

TFT-LCD panel technology is the difference in the two E-glass surface of the substrate and IC packaging color filter drive circuit. Glass substrate surface after etching, the red, green, and blue and black with fine structure built on the glass surface, a color filter. IC drive circuit through the semiconductor process will build CMOS circuits on glass. A color filter glass substrate with a carrier IC drive circuit.

For TFT-LCD glass substrate and the semiconductor vacuum deposition and etching as needed, so the glass substrates and silicon performance requirements similar to the should be able to withstand acid and alkali corrosion and high temperature operating environment, but also must have more sophisticated than the silicon surface accuracy, because the LCD panel on the surface accuracy requirement is almost perfect.

Another glass substrate must be very thin, especially large size LCD-TV. Currently the minimum thickness of the glass substrate may be 0.4 mm thick. Also require high light transmittance of glass substrate, or affect the picture quality because of the need to clean room production, but also high temperature, the glass substrate passing rate is very difficult to control.

Glass substrate of the global market monopolized by four companies, their combined market share of more than 90%. Are the United States Corning (CORNING), Japan, Asahi Glass (AGC), Nippon Electric Glass (NEG) and the Japan board Glass (NSG), of which the United States accounted for 60% of Corning, more than 30% the other three combined. Japan's Asahi Glass also monopolized the PDP Plasma TV with the glass substrate market, the market share of 90%. PDP TV with the glass substrate than the TFT-LCD glass substrates with higher temperature requirements.

The status of our flat glass industry is excess capacity on the one hand ordinary plate glass, special glass design on the other hand, process, technology, equipment and flat panel display industry chain of China's development and construction is not complete.

According to China's flat glass industry access, new development is limited to specific varieties of high quality float glass production line. Special varieties of high-quality float glass production line is able to produce the electronics industry with ultra-thin (1.3mm or less), the solar industry with ultra-white (equivalent to 5mm thick visible light transmittance> 90%), energy-saving construction of three-line Low-E and other high-quality float glass production line.

Items on the glass substrate of domestic enterprises rainbow, On color, the building materials, including optical and Rainbow last year worked in the construction of Chengdu and Zhangjiagang, including such items as glass substrates, they still can not supply the required high-generation line of LCD glass substrate . This is the current flat-panel industry, restricting the construction of the upstream industry chain key.

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