Optical thin film is a film product with optical properties in a broad sense. It is mainly divided into two kinds of optical films in polarizing and backlight module (BLU). The main application field is TFT-LCD liquid crystal panel, and the polarizer can also be used in the OLED panel. On the one hand, the growth of LCD LCD panels, especially large size products, increases the demand for optical film, on the other hand, it also brings great opportunities to the localization of polarizing film.
Thin film materials can be divided into functional thin films (film) and selective separation membranes (membrane). Polymer based functional film products are becoming more and more popular in various fields, especially those with optical function. Selective separation membranes have attracted much attention in the field of water treatment.
Structure composition of LCD
1. classification of optical films: optical films for polarizer and backlight module
An optical film is coated or plated on an optical element or an independent substrate by coating or plating a layer or multilayer dielectric film or metal film or a composite film to change the transmission characteristics of light, including the projection, reflection, absorption, scattering, polarization and phase change of light. Changing the transmittance and reflectivity makes the light of different polarized planes have different characteristics.
Optical thin films can be broadly divided into two groups: polarizer and backlight module optical film. The main application area is TFT-LCD LCD panel. LCD is mainly composed of LCD, backlight module, glass substrate, polarizer and TFT electrode. The liquid crystal display device belongs to a flat panel display device, and its basic structure is multilayer flat. The typical liquid crystal display consists of liquid crystal layer, glass substrate, polarizer and TFT electrode. Of course, different types.....
Optical thin film can improve optical efficiency and reduce stray light in optical system. Such as high efficiency antireflection film and high reflective film, to achieve adjustment or redistribution of light beam. For example, the beam splitter, the color separation film and the polarizing beam splitter are the optical elements for energy redistribution according to different needs. The signal to noise ratio of the system is improved by selective transmission of wavelengths. Such as narrow band and bandpass filter, long wave pass, short wave pass filter. The implementation of certain specific functions. Such as ITO transparent conductive film, protective film and so on. What lens is there in the film and television? There are two fingers, one is the optical component of the movie camera and the projector, which is used to produce the image. It consists of many lenses. A variety of different lenses, each have different modeling features, their application in photographic modeling, form an optical means of expression; two refers to a continuous picture taken from the starting to the shutdown, or the fragments between the two splice points, also called a ytterbium head. One finger and two fingers are two completely different concepts. In order to distinguish the difference between them, one often refers to an optical lens, and two refers to the lens. The lens referred to in film and television is not a physical meaning or an optical lens, but a lens that carries images and forms images. The lens is the basic unit of the whole movie. A number of lenses form a paragraph or scene, and a number of paragraphs or scenes form a film. Therefore, lens is also the basic unit of visual language. It is the basis of narration and ideographic. In the early filming of film and television, the lens refers to the sum of an uninterrupted picture taken from the start to the rest; in the later editing, the lens is a set of pictures between the two clips; in the finished film, a lens .....
With the development of science and technology and economic globalization, mankind has entered the knowledge economy society and information society. With the development of "made in China", optical manufacturing is on the rise in the mainland of China. China's optical manufacturing has begun to play an important role in the international economic arena. China's optical glass production and optical components output is near number one. Optical thin film is a layer or multilayer coating on the surface of optical parts that changes the surface characteristics of optical parts. It can be a combination of metal film, dielectric film or these two kinds of membranes. Optical thin film is an indispensable part of advanced optoelectronic technology. It can not only improve the performance of the system, but also be a necessary means to meet the design goal. The application field of optical film and all aspects of optical system, including laser system, optical communication, light display, light storage and so on, the main optical thin film devices They include reflective film, antireflection film, polarizing film, interference filter and spectroscope. They have been widely applied in the national economy and national defense construction, and have gained increasing attention from scientists and technologists.
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At present, there are more than 60 kinds of commonly used optical coating materials, and their varieties and application functions are still being developed. In recent years, the metal film system has been developed. When the thickness of gold, silver, copper and aluminum is 7 to 20um, the transmittance to visible light is 50% and the transmittance of infrared light is less than 10%. This film has been successfully applied to the panel of Apollo spaceship, which is used to reflect almost all infrared light through visible light. Heat control. The following .....
With the popularity of digital products such as computers, mobile phones, GPS, games, cameras and other digital products, more and more consumers have thought of protecting their core devices (LCD) with protective films, but 95% of the consumers may not know how to choose a protective film suitable for their own. . The following introduction may be helpful to you.
In terms of function, the protective film can be divided into:
Bright surface protective film (also has anti scratch and non scratch points, ordinary type);
AG sand grinding protection film (anti glare protection film);
AR/LR anti reflection / low reflection protective film (eye protection film);
Mirror surface protection membrane;
Anti fingerprint protection membrane;
Other personal protective films (such as bacteria protection film, color back stickers, colored ribbon side sticking, thunder carving or diamond flash protective stickers).
There are differences in the characteristics of these protective films, some of which are mutual existence and different applications, depending on your application and characteristic requirements.
1, the bright surface protection film is bright from the visual surface, with the best optical level (> 92%) and low fog (less than 1%) protection film analysis, its advantage is that it does not affect the clarity of the screen, the industry is called the invisible film. However, the disadvantage is that whether the screen is lit or not, there will always be more obvious reflexes (physically called parallel reflection), which will have some adverse effects on vision. This protective film is a universal protective film which can be applied to all screen surface protection. Besides, the surface can be made into two kinds: scratch resistant or scratch free.
As to the structure, it is also noted that the current market, the use of the main thickness of the total thickness of th.....