The rapid development of commercialization of LED lighting is expected to increase the market demand for white LED phosphors. Under the continuous research and development of phosphors, the three mainstream white LED phosphors that have been developed will be expected to respond. Different applications meet the diversity and stringency requirements of performance.
Light-emitting diodes (LEDs) have the advantages of low heat generation, low power consumption, long life, fast response, and small size. At present, the global white LED lighting industry continues to flourish, especially in the backlight of mobile phone panels, lighting and the automotive industry. Applications have more potential. In recent years, many panel manufacturers at home and abroad have introduced white LEDs as backlights for notebook LCDs, replacing traditional cold cathode fluorescent tubes using mercury. From the perspective of solving environmental protection and energy issues, incandescent bulbs have always had low energy efficiency and heat generation. As for mercury-containing fluorescent lamps, there is a disadvantage of mercury pollution. For this reason, LED lighting will undoubtedly become the goal of global lighting manufacturers. Although there are still many problems in the use of white LEDs for Minsheng Lighting, it is expected that in the foreseeable future, under the gradual reduction of manufacturing costs and the development of lighting applications, white LEDs are expected to become highly promising lighting products in the next 10 years.
Since 1993 , Nichia Corporation of Japan has successfully developed the world's first commercially commercial blue and violet LEDs based on InGaN, and has accelerated the arrival of white LEDs as a lighting generation. In 1996, Nichia also published single-grain white LEDs of InGaN/Y3Al5O12:Ce3+ (YAG:Ce) phosphors. Since then, the global competition for the development of white LED related technologies has been vigorously launched.
At present, the white LED production technology on the market is mainly divided into two major mainstreams. The first is to use the phosphor to convert the blue or ultraviolet light generated by the blue LED or the ultraviolet UV-LED into two-dimensional (Dichromatic) or three-wavelength (Trichromatic) white light. This technology is called Phosphor Converted-LED; the second type is multi-chip white LED, which combines two (or more) LEDs of different color to form white light. White LED products are most commonly used in blue LED chips with yellow phosphors. They are mainly used in automotive lighting and mobile phone panels. In the current market analysis of white LED products , phosphor-converted white LEDs can be described as mainstream.
Figure 1 summarizes and compares the principles and advantages and disadvantages of various white LEDs. Among them, (a) is the best in structure and color rendering, but the cost is the highest and has not been popularized. The construction method (b) has technology. The most mature and low-cost advantage, but the color shift, color rendering is not good, must be improved with appropriate red and yellow phosphors, in addition, the most serious is the Japanese patent restrictions are difficult to circumvent; and the construction method (c) The white LEDs produced by (d) both have good color rendering, small color, low cost and less serious patent limitations, so the future has great potential for development.
Figure 1 Principle and advantages and disadvantages of using white light to produce white light
The game keyboard requires a strong sense of key paragraphs,so as to produce a special feel suitable for game entertainment,and achieve a good experience for players in the game. The keyboard is one of the indispensable computer peripherals in our life. The previous keyboard has been used as an input device for office typing.With the emergence of computer games, the keyboard has gradually become a peripherals for games. Due to the relatively low performance of early computers,the way of computer games in this period is also relatively simple,ordinary office and home keyboard can completely meet the needs of players.However, with the continuous upgrading of hardware performance,the fun and complexity of games are also increasing, and the requirements for keyboard performance are also getting higher and higher,so the professional Gaming Keyboard was born.
As one of the most important peripherals for playing games,the tactile feel of the gaming keyboard is the most important reference.Tactile sensation is mainly determined by the strength of the key resistance degree.To judge the feel of a keyboard,it will be tested from whether the key elastic is moderate,whether the key force is uniform,whether the key cap is loose or shaken,and whether the key process is appropriate. Although different players have different requirements for the stretch and range of the keys,the most commonly accepted peripherals for playing games are the Black Axis Gaming Keyboard Mechanical.
The appearance includes the color and shape of the keyboard.A nice and stylish gaming keyboard will add a lot of color to your desktop,while a stuffy Wireless Gaming Keyboard will make you feel dull when playing games. Therefore,for the keyboard,as long as the player feels beautiful like, practical can be.
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