News from Beijing, January 12 According to the “News Hyperlink” report of the Voice of China Central Radio and Television, there has been a good news in the field of liquid crystal display. G8.5+ (high-generation) liquid crystal glass has been officially realized in Anhui. Produce. This project has successively obtained more than 600 authorized patents, forming a complete intellectual property system, which not only fills the gap, but also reaches the international advanced level.
Liquid crystal displays are everywhere in our lives. How does the LCD monitor work? Behind a thin liquid crystal glass, what powerful technologies must be supported? Why when we buy TVs, we often find that TVs of a certain size are put on the market, and the price is still very cheap? Wang Dacheng, Dean of Rainbow Electronic Glass Research Institute, reveals the mystery.
How does the LCD monitor work?
The working principle of the liquid crystal display is actually very simple. It displays a variety of colors by exciting the three primary colors of red, green and blue, thus presenting a wonderful image. This is equivalent to a louver, which changes the amount of light passing through through the angle conversion. The passing light can excite the three primary colors of red, green and blue on the front panel, making them emit different colors and brightness.
In the liquid crystal display process, a liquid crystal material and a glass substrate are mainly used. There are generally two glass substrates, the front glass plate is used to make the three primary colors of red, green and blue, and the rear glass plate is used to make the diode control circuit. These two packages together form a basic display. If the quality of the glass plate is poor, the color will be misaligned when positioning, and the image will look unclear; in addition, the glass substrate will cause some pollution during the manufacturing process, and the angle of light projection will change. The color will be defective.
How to judge the quality of LCD monitors?
The quality of the liquid crystal display will be affected by the quality of the material, but how do we judge its quality? Wang Dacheng gave the following suggestions:
First of all, it is the most basic criterion, that is, the fineness of the displayed avatar, that is, whether the conversion response is dehydrated.
Second, the resolution of the monitor, the higher the resolution, the clearer it looks.
Third, color. There is a certain subjective preference in it. Some people will find it beautiful when they look at a type of color.
Fourth, the response speed. For example, if a car is speeding by in the picture, if the display response speed is slow, there will be a smear. The response speed is fast enough to see the smear, which makes people look more comfortable.
What does domestic mass production of G8.5+ high-generation substrate glass mean?
The first LCD in the world was in the 1970s. At that time, it was still monochrome display, and the same was true for electronic watches and computer displays in China.
The generation division standard for glass substrates is to cut the glass substrate as large as possible while cutting the finished product with higher utilization efficiency and less waste. Wang Dacheng said that if you just cut out the largest glass substrate directly, it will be scrapped. The most economical cutting of the current G8.5 is to make 6 slices at 55 inches or 8 slices at 50 inches.
G8.5 can be mass-produced in China, which means that China will further break through the international monopoly, which will reduce the price of products. For example, 10 years ago, the 5th generation glass plate sold for 600-800 yuan, now it is about 60-80 yuan. G8.5 was sold for 1,200 yuan at the beginning, and now it is probably less than 400 yuan. It is the rapid development of panel manufacturing technology that everyone can buy cheaper electronic products.
How will domestic LCD monitors continue to develop in the future?
At present, the mass production of key materials for liquid crystal displays is not a problem in China, and many key equipment can also be publicly purchased internationally. However, disputes over intellectual property rights still exist in some technologies and processes. Chinese companies are working hard to innovate independently and try to solve these problems.
Wang Dacheng said that glass substrate technology is monopolized by a few companies in the world, such as Corning in the United States and Asahi Glass in Japan. In the 1950s, they began to develop the technology rapidly. China only began to conduct research and development in 2005, and a large number of experiments have to gradually solve the problem of glass substrates.
But on the whole, domestic LCD panels have moved to the leading international ranks. At present, the largest liquid crystal display in China has achieved 11 generations, which is equivalent to a large board of more than 3 meters, but there are problems in transportation.
Only in the face of products above G8.5 that have been developed internationally for nearly 10 years, China must find new ways to develop in the future, such as improving efficiency, increasing the speed of pulling and improving flexible display materials, so that China can better Facing industry competition and international monopoly.