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The Shandong Semiconductor Lighting Industry Development Plan (2008-2010) has recently arrived. The "Planning" proposes to take advantage of the rapid development of the global semiconductor lighting industry during the "Eleventh Five-Year Plan" period, to give play to the comparative advantages of Shandong Province in the research and development and production of semiconductor lighting industry, and to build four bases in Jinan, Weifang, Qingdao and Binzhou. Breaking through three key technologies, such as silicon carbide substrate materials and industrialization of blue-light diodes, large-scale production of high-brightness LED epitaxial wafers, high-power LED tube core manufacturing and packaging, and the development of substrates and epitaxial materials. Four industrial clusters, such as chip manufacturing, high-power light-emitting device packaging, and semiconductor lighting application products, form an internationally competitive green lighting industry with high technology level, large production scale, strong supporting capability and obvious regional characteristics.
The "Plan" proposes to provide strong guarantees and measures to strengthen the government guidance, improve the risk investment mechanism, improve the ability of innovation and industrialization, strengthen the construction of talent team, strengthen the standardization of semiconductor lighting and accelerate the development of related supporting industries. The lighting industry developed rapidly during the 11th Five-Year Plan period.
Semiconductor lighting technology is a brand-new lighting technology that uses semiconductor materials for photoelectric conversion. The products are non-polluting, energy efficient, and have significant safety and energy saving effects. Shandong semiconductor lighting technology research and industrial development started earlier. It has the State Key Laboratory of Crystal Materials of Shandong University, and has many scientific research achievements in the fields of crystal materials, semiconductor light-emitting devices, solid-state lasers, etc., Jinan, Weifang, Qingdao, Binzhou, Weihai, Jining. Yantai and other places have a good industrial clustering advantage.
Editor: China Lighting Network Wasteland
brightness
LCD is a substance between solid and liquid. It can't emit light by itself, so it needs additional light source. Therefore, the number of lamps is related to the brightness of the Liquid Crystal Display. The earliest liquid crystal displays had only two upper and lower tubes, the lowest of the popular type was four lamps, and the high-end one was six lamps. The four-lamp design is divided into three types of placement: one is that there is a lamp on each of the four sides, but the disadvantage is that there will be dark shadows in the middle. The solution is to arrange the four lamps from top to bottom. The last one is the "U"-shaped placement form, which is actually two lamp tubes produced by two lamps in disguise. The six-lamp design actually uses three lamps. The manufacturer bends all three lamps into a "U" shape, and then places them in parallel to achieve the effect of six lamps.
Tip: Brightness is also a more important indicator. The brighter the LCD, the brighter the LCD, it will stand out from a row of LCD walls. The highlight technology we often see in CRT (ViewSonic is called highlight, Philips is called display Bright, BenQ is called Rui Cai) is to increase the current of the shadow mask tube to bombard the phosphor to produce a brighter effect. Such a technology is generally traded at the expense of image quality and the life of the display. All use this The products of this kind of technology are all bright in the default state, you always have to press a button to implement, press 3X bright to play the game; press again to turn to 5X bright to watch the video disc, a closer look is blurred, you need to watch The text has to be honestly returned to the normal text mode. This design actually prevents you from frequently highlighting. The principle of LCD display brightness is different from that of CRT. They are realized by the brightness of the backlight tube behind the panel. Therefore, the lamp has to be designed more so that the light will be uniform. In the early days when selling LCDs, it was a great thing to tell others that there were three LCDs. But at that time, Chi Mei CRV came up with a six-lamp technology. In fact, the three tubes were bent into a "U" shape. The so-called six; such a six-lamp design, plus the strong luminescence of the lamp itself, the panel is very bright, such a representative work is represented by VA712 in ViewSonic; but all bright panels will have a fatal injury , The screen will leak light, this term is rarely mentioned by ordinary people, the editor personally thinks it is very important, light leakage means that under a completely black screen, the liquid crystal is not black, but whitish and gray. Therefore, a good LCD should not emphasize brightness blindly, but more emphasis on contrast. ViewSonic's VP and VG series are products that do not emphasize brightness but contrast!
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