â— LED-backlit LCD monitor will lead the audience
At the beginning of 2009, several mainstream brands showed that manufacturers led the test and launched their LED-backlit LCD products. Unexpectedly, consumers quickly accepted the LED backlight model. Therefore, in the second half of 2009, almost every major display brand introduced products with LED backlight design. Since then, the reputation of LED-backlit LCD monitors has continued to increase, and consumers' attention has remained high. Since you have tasted the sweetness, then the major manufacturers will certainly not give up on this, and will continue to exert their efforts in 2010. At that time, a large number of LED-backlit LCD monitors will flock to the market and become a new leader in the display market.
Basic structure analysis of liquid crystal panel
In the water test phase, consumers are able to generate interest in LED-backlit LCDs, which are bound to provide advantages that cannot be ignored. Both the LED backlight and the conventional CCFL backlight are part of the backlight module. Since the liquid crystal molecules themselves cannot emit light, an independent light source is required. At present, the traditional CCFL backlight tubes are very uneven in their distribution, whether they are strip, L or U. In particular, the design of the strip lamp makes the display always unsatisfactory in terms of light leakage control. The LED backlights are more evenly distributed and are not concentrated in specific locations, so there is a lot of trouble for consumers in terms of light leakage.
LED backlight distribution mode
If it is only the advantage of uniform backlight distribution and proper light leakage control, LED-backlit LCD displays will not have such high attention. Since the LED lifetime is generally greater than 100,000 hours, the brightness of the LED-backlit LCD display will be better than that of the CCFL backlight after a long period of use.
LED-backlit LCD display has obvious advantages
In terms of power consumption, LED backlights have significant advantages. Compared with CCFL backlight LCD monitors of the same specification, LED backlight design products can save 30% to 50% of power consumption, and even more, so this just caters to the current concept of energy saving, and has received widespread attention from consumers. In addition, LED backlights do not contain harmful elements such as “mercury†in manufacturing, so they have outstanding performance in environmental protection.
In addition to its own advantages, LCD monitors made with LED backlights can be made lighter and thinner, so this part of the product gives people a more fashionable and avant-garde feeling, and can attract consumers' attention and win consumers' love. However, most of the current LED backlight products use white LEDs as the light source. Compared with the three-color LEDs, the white LEDs do not have the essential effect on color. At present, most of these models are in a disadvantaged price. It is believed that when the high-volume LED-backlit LCD monitors are launched in 2010, the price will gradually decline with the competition, and the status of LED liquid crystal displays will continue to climb.
As for the implementation of the concept of energy conservation and environmental protection in the display industry, LED-backlit LCD displays can gain wide attention with their own significant advantages. At present, many display manufacturers, panel manufacturers and spare parts suppliers have increased their investment in LED modules. Therefore, it is undoubted that the mass production of LED backlights will be implemented in 2010. As display manufacturers increase the planning and manufacturing efforts of LED backlight products, LED backlight LCD monitors in 2010 will become popular products.
The ONU has two functions: it selectively receives the broadcast sent by the OLT, and responds to the OLT if the data needs to be received; collects and buffers the Ethernet data that the user needs to send, and sends it to the OLT according to the assigned sending window The end sends the buffered data.
The application of ONU can effectively improve the uplink bandwidth utilization of the entire system, and it can also configure the channel bandwidth according to the network application environment and applicable service characteristics to carry as many end users as possible without affecting the communication efficiency and communication quality, and improve the network utilization Rate and reduce user costs.
The concept of Passive Optical Network (PON) has a long history. It has the characteristics of saving optical fiber resources and being transparent to network protocols, and it plays an increasingly important role in optical access networks. At the same time, after 20 years of development, Ethernet technology has almost completely dominated the local area network with its simple, practical, and low-cost characteristics, and in fact has been proved to be the best carrier for carrying IP data packets. As the proportion of IP services in metro and trunk transmission continues to rise, Ethernet is also gradually penetrating access, metro and even backbone networks through improvements in transmission rate and manageability. The combination of Ethernet and PON resulted in the Ethernet Passive Optical Network (EPON). It has the advantages of Ethernet and PON at the same time, and is becoming a popular technology in the field of optical access networks.
EPON is a kind of emerging broadband access technology. It realizes integrated service access of data, voice and video through a single optical fiber access system, and has good economic efficiency. The industry generally believes that FTTH is the ultimate solution for broadband access, and EPON will also become a mainstream broadband access technology. Due to the characteristics of the EPON network structure, the special advantages of broadband access to the home, and the natural organic combination with computer networks, experts all over the world agree that passive optical network is the realization of "three networks in one" and the solution to the information highway The best transmission medium for the "last mile".
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