As we all know, television is a durable consumer product. It is normal for a TV to use more than 5 years. However, in fact, there is a precondition for this “durabilityâ€, that is, not to be in the period of technological change, especially the rapid replacement period now. In the past, replacing LCD TVs with CRT TVs became mainstream. It took nearly a decade to complete them. If it is put into place now, it will certainly be greatly accelerated because 4K TVs will replace full HD TVs in just 3-4 years. Ovid Cloud Network Data Display The penetration rate of 4K TV in 2017 has already reached 60%, and the proportion of 4K TVs sold this year is already close to 70%. That is to say, 10 TVs are currently on the market and 7 are 4K TVs. Here it is, The author wanted to ask everyone, have you been out of that 30%? If your home TV is not yet a 4K TV, it really means that in the moment, your home TV is a laggard. In other words, you need to change TV. For most ordinary consumers, switching to a 4K TV may not be necessary. To choose a flagship product, it's like buying a full-screen phone doesn't have to be iPhone X. After all, the price is too expensive, and the price/performance ratio is the number one choice. Close to the double 12, the author introduced several high-performance 4K TVs for everyone, and it will cost you enough to make you catch up with the trend. 1. Sharp LCD-60TX7008A The first recommendation is Sharp LCD-60TX7008A, which is a 60-inch 4K ultra-high-definition smart TV, imported from Japan, the panel, the quality is guaranteed. Double 12 period, this TV in the official Tmall Sharp flagship store for only 4499 yuan, and if you receive 200 yuan coupons, the current price is only 4299 yuan, is a good price in the near future, in the 60-inch TV, the price of this TV Already a fighter, don't miss this last wave. Appearance, this TV uses champagne gold design, 60-inch size display area is about 18.6% than 55 inches, larger and more refreshing viewing area, the overall stable and stylish, narrow frame gives the TV a larger audio-visual area , visually even without borders, full of fashion sense. In terms of image quality, the Japanese original 10-generation line X super crystal panel is equipped with a unique light transfer alignment film technology to make the color more full and the picture brighter. 4K ultra-high resolution, 8.29 million pixels, details, edges, colors and other details have a more refined processing, the slightest finish. At the same time, equipped with Sharp's image quality adjustment technology, to reproduce the "fine color gradient" and "rich and accurate color reproduction", more near the natural color level. In addition, the brightness of up to 480nits, color gamut is as high as 88% NTSC, the color performance is more delicate, the quality of the effect is further enhanced. Hardware, equipped with a strong quad-core CPU + six-core GPU, dual-band dual-band WIFI, even large-scale games, but also smooth and fast operation. Supports H.265 hard decoding, even if it is 4K video, no need to wait, the transmission speed is faster, the basic point of view can be achieved. Sound effects, with fever-grade sound quality, embedded enthusiast Dolby Audio and DTS2.0 audio decoding, can clearly feel the aircraft's roaring past, large areas of exciting excitement, etc., allowing users to come to the scene as if to enjoy real surround in the living room Sound effects. Content, Sharp and Galaxy Kiwi content strong cooperation, with a large number of genuine resources, equipped with parental management capabilities, provide age-appropriate animation and rich educational content do not worry about children indulge in TV for a long time. It is worth mentioning that this TV supports intelligent voice, with intelligent somatosensory remote control, only need to be able to control the TV, it is very convenient. 2. Millet TV 4A 55 inches As an Internet brand, millet is not easy to get a place in such a fierce competition in the color TV market, which is inseparable from its high cost performance. Other Internet brands have not been so fortunate. LeTV’s breakage of the capital chain has caused a number of businesses to suffer, and television services have also faced a crash. Other brands such as storms, PPTV, and micro-whales are also inferior to those of Xiaomi. Millet TV is a little better in terms of design, configuration and sales. For example, the 55-inch millet TV 4A recommended for everyone today is a very good one. The performance aspect of the 4A55 inch video quality of Xiaomi TV is a medium-in-the-middle type. It adopts the original 4K screen and is upgraded to the 6th generation of the image quality engine. It also supports the leading standards HDR10 and HLG, and brings the visual effect of restoring the real environment. It also uses the direct type. The backlight improves the contrast of the picture through more precise backlight control, giving viewers a visual experience comparable to the cinematic effect. In addition, Xiaomi TV 4A has eye protection mode to reduce blue light and effectively relieve eye fatigue. Millet TV 4A55-inch 4 core 64-bit AmlogicT962 high-performance processor, the standard version of the storage combination of 2GB+8GB, not only brings faster processing speed, but also more to meet consumer storage needs, support Bluetooth 4.2, can Connect various Bluetooth devices such as headphones, mouse, and gamepad; support Dolby, dts dual decoding. In addition, Xiaomi TV launched the artificial intelligence television system, “PatchWall puzzle wallâ€, combined with the cutting-edge technology of the “MiBrain†team (MiBrain), which can provide accurate content recommendation and understand the content better. The Xiaomi 4A series TV released this time is even more powerful, not only achieving basic voice recognition, being able to listen to, but also being able to understand words. 3.TCL P6 55 inches TCL launched new P6 ultra-thin TVs for young consumers chasing fashion trends. P6 is competitive with similar products both in appearance and in the core. The TCLP6 is very slim, with no screws at all on the 4.8mm ultra-narrow frame and 7.9mm slim body. Whether it is a seat or a wall, it can bring a minimalist and fresh industrial aesthetic appeal to the living room; At the same time, TCLP6 achieves 4K UHD resolution, and the advanced Q-quality engine is a combination of sophisticated color gamut control technology, high-precision fine control technology, and intelligent local control light technology, providing color saturation, brightness, and clarity. With high-level performance, the high dynamic image quality of the whole ecological HDR greatly enhances the dynamic performance between the dark field and the bright field, and the details are more outstanding. P6 is equipped with a 64-bit processor MS838C, clocked at up to 1.6GHz, with a core count of up to 32 cores, and uses a rare DDR4 running memory in the color TV industry. The system is equipped with a depth-customized Android6.0 professional smart TV system; P6 is equipped with a Conchssound audio system. Dolby DTS dual authentication achieves dual decoding, perfect rendering without loss of sound quality. Under the virtual surround sound technology, the original sound can be reproduced under the blessing of the virtual surround sound technology, which brings an immersive feeling. 4. Skyworth Air Series Q8 Skyworth Q8 is equipped with the latest Coolopen 5.5 operating system, including the film and television center, application circle, as well as a new UI design, both in terms of visual and experience are refreshing, natural experience extraordinary. In operation, Coolopen System 5.5 will simplify the complex operation of traditional smart TVs and adapt them to all types of people in the home. The system is also specially designed for children to create a child mode. By presetting the viewing time, it prevents the Internet from indulging and allows you to give the remote control to children. Skyworth Q8 TV has introduced AR (Augmented Reality) technology to allow the virtual world to interact with the real world. The experience of Skyworth AR TV has begun to take shape, with children's education, AR somatosensory games, sports and fitness, and shopping and fitting. Application is very rich in content. Skyworth Q8 is equipped with 4-color 4K LCD panel, 4-color HDR and LAP high color gamut technology, which greatly improves the picture quality. 4-color HDR was jointly developed by Skyworth and LG Display. Based on ordinary HDR, the HDR algorithm for 4-color 4K screens was added, which surpassed ordinary HDR. LAP high color gamut technology is a new generation of color gamut enhancement technology developed by Skyworth and LG Display. It improves the purity of red and green by using rare color-blocking laser materials to enhance the color gamut, and the color gamut value is ≥136%; compared to other color gamut technologies. , LAP high color gamut technology has the advantages of more accurate colors and healthy materials (excluding cadmium and indium compounds). The utility model discloses a PCB antenna for 868MHz frequency band, including a PCB substrate, a first PCB antenna arranged in the PCB substrate, a ground, and an L-shaped second PCB antenna arranged between the first PCB antenna and the ground; The end part of the second PCB antenna is provided with a feed point, the ground surface is provided with a ground wire extending from the OUTSIDE of the PCB substrate to the surface, the core wire of the ground wire and the feed point is tinned. 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