In recent years, with the continuous development of liquid crystal display technology, the application fields of liquid crystal displays, especially color displays, are also expanding. Driven by the market of liquid crystal displays, the backlight industry has shown a booming scene.
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As the core component of LCD TV, in addition to the performance of the backlight directly affects the LCD image quality, the cost of the backlight also occupies 3-5% of the LCD module, and the power consumed accounts for 75% of the module. It is a very important component in the LCD module.
At present, the backlights mainly include EL, CCFL and LED backlight types, which are classified into side light type and direct type according to different light source distribution positions. As LCD modules continue to develop in brighter, lighter, and thinner directions, edge-lit CCFL backlights have become the mainstream of LCD TV backlight development.
The electroluminescent (EL) backlight body is light in weight and provides uniform light. Its power consumption is very low, the required operating voltage is 80 ~ 100Vac, the inverter that provides working voltage can convert 5/12/24Vdc input into AC output. However, the life of the EL backlight is limited (the average service life is 3,000 to 5,000 hours under 50% brightness conditions, and the service life will be greatly shortened at higher brightness levels). Therefore, the ideal backlight for EL backlighting is used. The output voltage and frequency are allowed to increase as the EL bulb ages, extending the useful life of the display using EL's backlight source.
LED backlights have a longer life than EL (more than 5000 hours) and use DC voltage, which is commonly used in small monochrome displays such as phones, remote controls, microwave ovens, air conditioners, instrumentation, stereo audio equipment, and more. The LED backlight is basically identical in structure to the CCFL backlight. The main difference is that the LED is a point source and the CCFL is a line source.
LED is the backlight of LCD TV, the main purpose is to improve the picture quality, especially in color saturation, the LED backlight technology display can obtain a wide enough color gamut to make up for the lack of display color of the liquid crystal display device, so that It can meet or exceed the requirements of Adobe RGB and NTSC color standards, and can reach NTSC ratio of more than 100%. Among them, Sony introduces LCD TV panel with LED backlight, especially emphasizing the performance of bright red and dark green, which can display more realistic than the past. s color.
At the same time, because of the planar light source characteristics of the LED, the LED backlight can also realize the color and chromaticity adjustment function of the sub-region that the CCFL cannot match, thereby achieving more accurate color reproduction to meet the needs of the graphic publishing and graphic design work. The dynamic adjustment of the picture allows the brightness and contrast to be dynamically corrected when displaying different pictures to achieve better picture quality.
At present, most LCD TVs use LED backlights, and consumers can also choose LED backlights when they are purchasing. From the actual picture, we can also see that the LCD TV with LED backlight is more light and thin in the design of the body, and it is more beautiful and more energy-saving in terms of picture quality. Many industry insiders predict that LED backlight LCD TV will be a core direction for the development of flat-panel TVs in the future.
What is an outdoor wireless access Point?
Outdoor Wireless Access Points (aps) are wireless networking devices designed to provide Wi-Fi coverage in outdoor environments and are often used in industrial and corporate environments that require outdoor Wi-Fi access, as well as in public Spaces such as parks, stadiums, campuses, and outdoor event venues.
Outdoor wireless access points are built with a variety of weather conditions and tolerance to high temperatures in mind, so they are often equipped with weatherproof enclosures to protect internal components from moisture, dust, and other environmental elements. In addition, outdoor wireless access points are equipped with high-gain antennas that enable long-range coverage while simultaneously supporting multiple devices. Some outdoor wireless access points also have grid networks that connect a large number of wireless access points to provide seamless Wi-Fi coverage over a wide area. To protect the security of the network, outdoor wireless access points are also equipped with advanced security features such as WPA3 encryption and guest access restriction. As an important component of outdoor Wi-Fi infrastructure, outdoor wireless access points provide a reliable and secure connection within a certain range of the external environment.
Why are outdoor wireless access points important?
Here's why:
In order to provide reliable and fast Wi-Fi coverage in outdoor environments, outdoor wireless access points must be equipped to cope with the increasing use of mobile devices and meet the wireless connectivity needs of public places. This will support individuals to stay connected, allowing them to use the Internet in public Spaces such as parks, stadiums and universities.
For many organizations and industries, outdoor Wi-Fi connectivity is essential for daily operations. For inventory management and control systems, wireless facilities and warehouses must use wireless communication. These systems must be supported by wireless access points.
Wireless access points can support new applications such as outdoor video surveillance, smart lighting and environmental monitoring. Without outdoor wireless access points, many applications that require wireless connectivity will be difficult to sustain.
Visitors expect Wi-Fi connectivity in public areas such as parks and stadiums. Businesses that provide outdoor Wi-Fi can significantly enhance guest interaction and improve the overall customer experience.
All in all, outdoor wireless access points are equally important to businesses and companies because they allow them to reach out far beyond their original physical premises, reaching out to potential audiences that would otherwise be out of reach.
What are the important characteristics of outdoor wireless access points?
The following characteristics of an outdoor wireless access point are important:
Weatherproof and durable design: Outdoor wireless access points must be able to withstand harsh weather conditions and extreme temperatures. In addition, a weatherproof case is required to protect internal components from moisture, dust, and other environmental elements.
High-speed connectivity: In order to provide service to a large number of users and devices, outdoor wireless access points should provide high-speed connectivity.
Advanced Features: To provide high performance and powerful support for a wide range of devices, outdoor wireless access points should have advanced features including beamforming, MU-MIMO technology, and grid networking.
Simple installation and management: Outdoor wireless access points should be built with centralized management and monitoring capabilities backed by a cloud-based platform for easy installation and management.
Power options: Depending on the deployment area and power availability, the outdoor wireless access point should accept multiple power sources, such as PoE (Power over Ethernet) or direct AC power.
Security: To protect the network and users' data, outdoor wireless access points should include security features such as WPA3 encryption and guest access restrictions.
Customization: To accommodate diverse deployment Settings and extend coverage, outdoor wireless access points should include retrofit options including installation kits and antennas.
Simply put, outdoor wireless access points should be built from the outset to ensure that they provide reliable, high-performance wireless connectivity in demanding outdoor environments, while ensuring that they are easy to install, manage, and provide advanced features and customization capabilities.
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