First, consider the safety and energy efficiency of the luminaire. When selecting a luminaire, it is necessary to first look at the quality of the luminaire, check whether the luminaire warranty and the certificate are complete; and that is to focus on energy conservation and energy saving, high-efficiency energy-saving lamps or energy-saving light sources should be used.
Second, pay attention to the color and style of the lamps and the matching of the room. The color, shape and style of the lamp, in addition to matching with the color tone of the room, can also choose the type of lamp according to the function of the room. For example, the living room can choose the chandelier with luxurious ceiling lamp and the warm light source; the study can use more light. Soft, bright, avoiding glare, lamps and lamps with milky white shades should be added for local lighting for study and work; the bedroom should form a calm and gentle atmosphere, which gives people a sense of security, and can use more milky or lighter colors. Chandeliers and downlights. It is especially emphasized that the metal part of the luminaire should not have too strong reflection, and the lighting does not need to be too strong to create a calm atmosphere and reduce fatigue and tension.
Third, the size of the luminaire should be combined with the area of ​​the room, the number of furniture and the corresponding size. For example, a small living room of less than 12 square meters should be used with ceiling lamps or wall lamps with a diameter of 200 mm or less. The number and size of the lamps should be appropriate. So as not to appear too crowded. Many insiders believe that the rational choice of lamps must first make the lamps suitable for the size and shape of the indoor space, in accordance with the purpose and character of the room.
Fourth, use the color of the lamp to distinguish the quality of the lamp. When the light is on, the palm is close (the energy-saving lamp is not hot). If the palm is still the original ruddy color, it is a qualified lamp. If the palm becomes dark and gray, it is an unqualified lamp. Good lighting is not only energy efficient, but also healthy and comfortable, and it can protect your vision.
TFT LCD screens are characterized by good development, high screen, strong sense of layering, and bright colors, but there are also relatively power consumption and low cost. TFT screen technology legendary the development of mobile phone color screens. Many of them support 65536 color displays, and even have 160,000 color displays. With a very high screen TFT, the visual advantage is important.
Technical characteristics
TFT technology was developed in the 1990s. It uses new materials and new processes for fine semiconductor all-electronic manufacturing technology. It is the basis of liquid crystal (LC), inorganic and organic thin-film electroluminescence (EL and OEL) flat panel displays. It is a variety of films made on non-single materials such as glass or plastic products (of course also on the surface) through methods and chemical reaction forming processes, and a large number of micro-integrated circuits (LSIC) are produced through the processing of the films. Non-single crystal crystals can achieve cost reduction, which is an extension of traditional small integration to large area, function, and direction. Manufacturing TFTs that control the switching performance of pixels (LC or OLED) on large glass or plastic products has a higher technical content than manufacturing complete ICs on silicon wafers. The required production equipment and production technology surpass the production of large-scale integration of semiconductors, which is the luster of modern technology. The main features are:
(1) Large area: The first generation of large-area glass products (300mm×400mm) TFT-LCD-production line was put into production at the beginning of the nineties, and the area of eye glass has been expanded to 60mm×80mm in 2000), as well as 950mm×1200mm glass The design will also run.
(2) High integration: The size of the 1.3-inch TFT chip used for the projection of liquid crystal is one million for GA. The resolution is SXGA (1280×100×1280×1000×1280×1000×1280×1000×16.1 inch TFT screen amorphous film) 50nm, and TAB ON GLASS and SYSTEM ON GLASS technology, its IC integration, The technical requirements for equipment and supplier technology are more difficult than traditional LSI.
(3) Powerful function: TFT as a matrix selection solution provides the light valve characteristics of liquid crystal. TFT-LCD is the first Liquid Crystal Display in human history whose display quality exceeds that of CRT. The function will be more powerful, which is unmatched by traditional small integrated circuits.
(4) Design: Glass products and plastic products have fundamentally solved the problem of large semiconductors and opened up potential applications for the application of small semiconductors.
(5) Ingenious process: In addition to the use of vapor phase, chemical vapor deposition (chemical vapor deposition) MCVD (molecular chemical vapor deposition) and other processes to form films, laser flame technology has also begun to be applied traditionally, not only making amorphous films, polycrystalline films, but also Single crystal films can be manufactured. Can make silicon film, can also make other II-VI group and III-V group semiconductor thin film.
(6) Wide range of application fields. Liquid crystal display based on TFT technology is a rich industry in the information society, and the technology can also be applied to the rapid growth of thin-film organic electroluminescence (TFT-OLED) flat panel Display Screen shots. .
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