Panasonic 55-inch 4K TV experience quality comparable to plasma
As a mainstream manufacturer in the plasma era, Panasonic flat-panel TVs have always had a superior picture quality performance. However, after completely withdrawing from the plasma market, Panasonic had to choose the mainstream LCD market and set sail again. The TX-55CX802 is Panasonic's flagship 4K TV in 2015. It is equipped with a wide color gamut panel, supports HDR mode, and uses the Firefox smart TV system. It is quite unique. So, is its overall effect impressive like a plasma? Take a look at the experience.
Design and function
Panasonic TX-55CX802 uses a popular ultra-narrow frame design, with a metal base, the overall texture is outstanding. It is also equipped with the current mainstream smart TV interface and connectivity, such as three HDMI, USB, support for DLAN and Bluetooth streaming media, access to Panasonic's online service content.
TX-55CX802 equipped with Firefox smart TV system, which is still relatively rare in current smart TV products. Firefox system has a simple interface design, a wide range of customization flexibility, while the application focuses on the TV interface experience, the overall use of the effect is still good.
Quality performance
In terms of picture quality, it has excellent overall picture quality performance thanks to its wide color gamut panel, support for HDR mode (via firmware upgrade), and Panasonic's 4K Pro image processing system. Trusted Reviews, after testing, said that its panel quality is very high, with each piece of color or stripes, and the color is focused on the delicate balance between authenticity and ornamental quality, comparable to the red-hot plasma.
Of course, with the development of 4K technology, Sony and Samsung's high-end TVs have excellent display effects in recent years, but Panasonic still has stunts. Through the combination of panel and display technology, the TX-55CX802 has outstanding performance in black performance. The dark scene has outstanding details. Compared with other brands of LCD TVs, it is very close to the OLED standard. However, the TX-55CX802 is not without its drawbacks. The turbidity of the backlight on both sides of the test sample screen is not known to be a common phenomenon or an individual problem.
In addition, TX-55CX802 also has a good 3D picture quality and audio performance. The unfortunate part is that the input lag speed reaches 40ms, which means it is not particularly suitable for playing high-speed images or playing games.
summary
In the 4K era, TV manufacturers have resorted to new technologies such as Quantum Dots, HDR, and OLED to enhance their picture quality. Panasonic, by virtue of its leading technology, has enabled LCD TVs to have comparable plasma and OLED image quality performance. Affordable and impressive.
High resolution
In order to realize a large-area high-resolution Liquid Crystal Display, it is usually necessary to use low-impedance metal materials, high-performance switching elements, and high-precision processing techniques. Aluminum is the most researched and used material for making TFT buses with low-impedance metals. By solving the problems of easy formation of hillocks, chemical corrosion and oxidation of aluminum, alloy methods (such as Al-Cu, Al-Si, Al-Nd and Al-Ti, etc.) and interlayer methods (such as Mo/Al/Mo) have been reported successively. , Cr/Al/Cr and Ti/Al/Ti, etc.), the alloy method is relatively simple in process, but the material has a higher resistivity. In May 1998, IBM developed a 16.3-inch ultra-high resolution (200ppi) a-Si TFT Display using Al-Nd alloy as the gate electrode, and mass production has been achieved. In April 1999, Toshiba introduced the 20.8-inch 16-SVGA (3, 200 × 2, 400) a-Si TFT-LCD, which can be said to represent the highest level of a-Si TFT-LCD in terms of high resolution and high capacity. .
According to Display Search in the third quarter of 2011, the global flat panel display research report "QuarterlyWorldw ide Flat Pane l Dis play Fore cas t Re port" pointed out that the average pixels per inch (ppi) in large-size LCD panels (>9.1 inches) ) Will grow from 88ppi in 2010 to 98ppi in 2015. The ppi of small and medium-sized LCD panels (<9.0 inches) will grow from 180ppi to 300ppi in the same period. With the rise of smart phones, mobile phones will be the most obvious application product for ppi's growth.
Another important way to realize high-resolution liquid crystal display is to develop LT p-Si TFT technology. The resolution of published p-SiTFT-LCD products is generally around 200ppi. Compared with a-Si TFT-LCD, LT p-Si TFT-LCD has a smaller volume of thin film transistors and storage capacitors. Therefore, it has a larger penetration area per inch, resulting in a brighter display. , And save more power. When the market demands higher ppi, low-temperature polysilicon (LTPS) technology becomes the best choice for manufacturing high-resolution thin-film transistor liquid crystal displays.
Contrast
The control ICs, filters and oriented films used in LCD manufacturing are related to the contrast of the panel. For general users, a contrast ratio of 350:1 is sufficient, but such contrast in the professional field does not satisfy users. Demand. Compared with CRT monitors easily reaching 500:1 or even higher contrast, only high-end LCD monitors can achieve this level. The first-tier LCD monitors on the market, such as Samsung, Asus, LG, etc., can reach a contrast ratio of 1000:1. However, because the contrast is difficult to accurately measure with instruments, you have to go and see it yourself when you pick it.
Tip: Contrast is very important. It can be said that the selection of LCD is a more important indicator than bright spots. When you understand that your customers buy LCDs for entertainment and watching DVDs, you can emphasize that contrast is more important than no dead pixels. We When watching streaming media, the brightness of the source is generally not large, but to see the contrast of light and dark in the scene of the character, the texture change from gray to black hair must be shown by the level of contrast. The 256-level grayscale in the test software In the test, more small gray grids can be seen clearly when looking up, which means that the contrast is better!a
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