The replacement of mainstream display technology from cathode ray tubes to liquid crystal panels took about 50 years. With the support of technologies such as Mini LED backlighting, LCD panels will be able to meet consumers' new demands for high-definition and medium to large screen displays. Considering that issues such as yield and cost of emerging technologies are difficult to solve in the short term,It is expected that LCD panels will remain the mainstream technology in the display field in the next 5-10 years.
With the development of material technology, display technology has also evolved from the initial cathode ray tube display technology (CRT) to flat panel display technology (FPD), and flat panel display has extended to technology routes such as plasma display panel (PDP), liquid crystal display (LCD), organic light-emitting diode display (OLED), etc.
LCD， The full name is Liquid Crystal Display, which stands for Liquid Crystal Display, also known as LCD screen.The general LCD display structure consists of two parallel glass substrates combined with polarizing materials, with a liquid crystal cell in the middle. The rotation direction of liquid crystal molecules is controlled by voltage to control the polarization of each pixel, thereby achieving the purpose of imaging.
An LCD screen is composed of several tiny pixels, each of which is further divided into three sub pixels of RGB: red, green, and blue. However, these pixels cannot emit light on their own and require an independent backlight layer to provide a light source for presenting content.
Simply put, an LCD screen is equipped with both vertical and horizontal polarizers. By applying voltage to them and controlling the RGB sub-pixel ratio brightness, you can mix all the colors you want to see.
▲ LCD panel structure
LCD display is a type of flat panel display technology, based on the special physicochemical and optoelectronic properties of liquid crystal materials. It is currently the most mature and widely used display device in flat panel display technology. LCD display technology is mainly applied in fields such as televisions, monitors, laptops, tablets, and smartphones. It has the advantages of right angle display, low power consumption, small size and zero radiation, mature eye protection and transparency technology, and is one of the core foundations of the electronic information industry.
TFT-LCD (Thin Film Transistor LCD) technology is widely used in the market, which adds thin film transistors to make each liquid crystal molecule switch independently, achieving a more stable thin film transistor liquid crystal display. Due to the passive light emission of LCD screens, a light source is required,Therefore, TFT-LCD display modules are mainly composed of two major parts: liquid crystal panels and backlight modules.
▲ General structure of side lit LCD panel
Since the liquid crystal itself does not emit light, a stable and uniform background light source is provided by the backlight module, and natural light polarized light conversion is achieved through polarizing film. Thin film transistors control signal transmission through switches, regulate the refraction of polarized light, and finally transmit light through color filters to change color, achieving the final imaging.
In terms of the panel itself, the two parts with the highest cost proportion are polarizing film and color filter, and the sum of the cost proportion of these two parts alone is about 50%. This material may sound familiar to us, but the technical barriers to actual production are very high.
Looking at the entire LCD screen industry chain, it can be roughly divided into three categories: raw materials and equipment, production and manufacturing, and end products.
Most Chinese screen manufacturers are in the middle tier, which is the assembly and production of panels. The products that come out of the Chinese screen factory production line are basically packaged screen modules that can be directly sent to the end manufacturer's product factory.
▲ LCD screen industry chain situation
Generally speaking, the closer a company is to the middle and lower reaches, the larger its size and the stronger its voice in the supply chain. In fact, although upstream companies hold core technologies, without Chinese screen factories, their technology cannot be efficiently transformed into products.
The ability to implement LCD technology on a large scale, with high efficiency, high yield, and low cost, into visible and tangible panel modules that can be used in terminal products is itself a capability.
Without Chinese screen manufacturers, upstream material companies in the United States, Japan, and South Korea have only one set of skills, but they are unable to transform technology into products. This is also one of the reasons why Chinese screen manufacturers have an increasingly strong voice in the LCD field.
He has needs, you have skills, I will help you achieve them. This is what Chinese screen manufacturers are good at.
The position of Chinese screen manufacturers as the "manufacturing center" in the LCD market cannot be replaced by other countries in the short term.
The LCD screen market may continue to maintain stable development in the next two years, and the leading advantage of domestic screen manufacturers will further expand. In the future, from being 'large' in terms of quantity to being 'strong' in terms of technology, the LCD industry will have a golden period of about 10 years.
As an established LCD display module manufacturer, Saishida Technology is well-known in the industry. By the way, let's take a look at the production of China's screen factory, Saishida Display Factory.
Achieve a hundred level dust-free workshop during the competition
Multiple automated production lines every few seconds
A LCD screen has been produced
These screen panels have passed through
Multi channel testing process
Just packaged and shipped to the customer
Saishida Technology Automatic Production Line
Every day, it flows continuously
Produce high-quality LCD displays
Production capacity continues to climb
Product supply exceeds demand
……
Enhanced production capacity
In 2022, various departments of Saishida Technology have achieved remarkable results in their respective job positions, with continuous product research and development innovation, sustained sales growth, and increasing shipment volume, all of which have enhanced the company's influence.
Future Saishida Technology leads the large-size LCD screen raceWe will continue to improve our innovative technology and manufacturing capabilities, accelerate service response speed, and continue to provide users with better technology and services.