Is LCD TV OK? Key look panel and imaging technology

The once-a-year 315 is coming soon, and we have to say something about consumer rights. Over the years, consumers have increasingly attached importance to the protection of their own rights and interests, and more and more means have been used to safeguard their rights and interests. Relying on a number of fake products with low technological content and price speculation, it is difficult to flicker to consumers. However, in today's ever-changing product technology, consumer awareness of the product is always limited, if the business with a completely easy-to-use product to conduct fraud and consumer fraud, consumers will often be difficult to detect.

Especially for "black box" household appliances such as TVs, consumers can only understand the internal chip and panel information by simply looking at their appearance. They only look at a few segments of the processed video, and they can't judge whether the display performance can be achieved. Take the 4K TV, which is currently the hottest, and it's out of the 4K controversy. How can consumers ensure that they are genuine products? Whether or not we can win the 315 war under the "high-tech conditions" has become a new issue that needs to be solved urgently. Today's editors start with the panel to talk about how consumers should protect their rights when choosing TV.

Popular flat-panel TVs are mainly divided into OLED TVs, plasma TVs and LCD TVs. The former two have little market share at present and LCD TVs are still the mainstream. Next, let's talk about mainstream LCD TVs. For LCD TVs, one of the two most critical factors in determining picture quality is the LCD panel and the image processing technology. The panel is the cornerstone of everything. It is difficult for a clever woman to be without a meter, and no good image processing technology is used for a good panel. The image quality will not be good.

The current manufacturers of LCD panels are mainly Samsung, LGD, AUO and other Taiwanese manufacturers, as well as mainland companies such as BOE and Huaxing Optoelectronics. At present, the panel is in a state of oversupply, competition is fierce, and the generation of profits is generally avoided. However, the marketing caliber of merchants is not uniform. In the LCD TV panel, consumers are often exposed to various types of advertising such as “A+ screen, A++ screen, X super crystal panel, IPS hard screen”. Some are at a loss.

For many consumers, the IPS hard screen should not be unfamiliar. This type of screen has long been used in flat-panel televisions, high-end displays, and smart phones. The friends who play art must know that Dell and LG's many professional-grade monitors use IPS screens, which has caused IPS= professional impressions for many consumers. Compared with general LCD screens, IPS hard screen liquid crystal molecules are arranged horizontally and the structure is more stable, and colors can be accurately and more accurately restored, revealing a richer sense of depth. In addition, IPS hard screen also has the advantages of high response speed, large viewing angle, and no distortion.

IPS panel contrast

However, the IPS screen is used in the TV field, and it is not a hero of a tall and complete style, but there are some weaknesses: Due to the horizontal arrangement of the IPS hard-screen liquid crystal molecules, the panel light transmittance is low, and it is necessary to increase the backlight brightness in order to achieve sufficient brightness. The problem has also arisen. High backlighting has exacerbated the light leakage at the edge of the screen, making the purity of black in the picture insufficient, and poor contrast performance. In addition, the bright backlight also increases the power consumption of the TV to some extent. However, in general, although IPS hard screens have defects in contrast, they have excellent performance in terms of color, response speed, image stabilization, and viewing angle. (On the martial arts film is the young man qualification is very good, is a good piece of martial arts ah!)

So, how can we determine if a TV uses an IPS panel? The method and the simplicity are as compared with other types of panels. The screen of the IPS panel is relatively “hard”, and it is not easy to appear water-like deformation by hand-scratching, so it is also called a hard-screen. When you look at the screen carefully, if you see the fish scale-like pixels pointing to the left, plus a hard screen, then you can determine the IPS panel.

On the LCD panel, there is also a concept of the first generation of the line, many consumers believe that the eighth generation of LCD panels than the seventh generation line of advanced, "generation" the higher the number of panels the better. And many businesses will use this concept to flick consumers. In fact, the current TV applications are the sixth generation to the tenth generation LCD panel lines. The difference between them is that the motherboard produced by the new generation of panel lines is more suitable for cutting new-size TVs and reducing waste. For example, the sixth-generation LCD panel line is still in existence. Taiwan’s Chi Mei and AUO are all major manufacturers of the sixth-generation line. The most suitable size for cutting is the 32-inch TV set with larger shipments, and the The utilization of the board is quite high. The large-scale popularization of the most popular 50- and 55-inch TVs is inextricably linked with the large-scale application of the eighth-generation line.

The above are all about the content of the LCD panel itself, but a TV uses a good panel, but it has laid a good foundation. In the end, it is necessary to present the user with exquisite image quality, or it is inseparable from other excellent components such as chips and superb television display technology. Take the current industry's hottest topic, 4K TV, for example. A true 4K TV is not just about the screen itself! Although the industry currently does not have a highly uniform standard for 4K certification, whether it is a national-level testing or certification, or the company's newly-declared “true 4K” and “full 4K” corporate autonomy standards, the definition of 4K is not a simple one. The simplicity of the resolution of a simple one reaches 4K level (3840×2160).

For example, the China Electronics Chamber of Commerce, the State Radio and TV Product Quality Supervision and Inspection Center (formerly the Third Institute of the Ministry of Information Industry, the abbreviation of the three institutes) united in the development of 4K ultra-high-definition TV industry leader in color TV companies, combined with the previous product authority evaluation, the market Research, technical exchange seminars, and the launch of the "4K Ultra High Definition TV Selection Standard" (hereinafter referred to as "Standard").

One is equipped with professional UHD Ultra HD display

4K Ultra High Definition TVs must be equipped with a professional-grade UHD Ultra HD display with a physical resolution of 38,402,160 (4K2K) and pixels of 8,294,400. Its display screen body 4K pixels are arranged closely, distributed evenly, the display image is clearer, and the actual sense of presence is also stronger. Some manufacturers will also use pixel points, the so-called RGBW (Green UHD) 4K panel, to add a white (W) sub-pixel point to the normal RGB pixels. By changing the pixel arrangement, two adjacent pixels can be used. Share one subpixel. Although this approach saves costs, the actual definition will be slightly worse.

Two or four-core or above processor and built-in 4K decoder chip, equipped with Android4.2 and above operating system

Due to the multiple enhancement of 4K source image quality and higher processor requirements, the quad-core processor has a powerful TV computing core and control center and graphics processing capabilities, enabling smooth display and application of the game. The advanced 4K decoder chip can independently handle multiple tasks to achieve single-task efficient, multi-tasking and non-destructive effects, to ensure ultra-high-definition signal from the input, decoding, to display the full-channel ultra-high-definition no attenuation processing, truly ultra-high definition The picture is completely visible, such as the current industry's highest-end 4K processing chip MSTAR 901K.

Three application of mature 2K to 4K image quality improvement technology

4K Ultra High Definition TVs must use mature 2K to 4K quality enhancement techniques, such as 2K to 4K correlation compensation. This technology is the most mature 2K to 4K technology in the industry. It is completely different from the common single compensation technology. Through real-time analysis of FHD signals, the signal is divided into 2 million two-dimensional sections. The adjacent sections are vertically and horizontally four dimensions. The color operation improves the FHD signal data to the true UHD level, and the image authenticity reaches over 90%.

Four with high-speed transmission port of USB3.0, HDMI1.4 and above

The 4K Ultra High Definition TV must have a high speed transmission port of USB3.0, HDMI1.4 and above. 4K source information is very large (the size of the uncompressed version of the 18 minutes is 3.5TB, with an average of 194GB per minute). Now only the USB3.0 high-speed transmission interface and the HDMI1.4 or higher version of the high-speed port can quickly transfer the 4K information source, and Streamline playback through TV to build a true Ultra HD transmission system.

The fifth is equipped with rich smart cloud applications to realize the interconnection of multiple home terminals and has a stylish design

As a high-end representative product of the color TV industry, 4K ultra-high definition TVs must meet industry-leading standards in terms of product hardware, software, and appearance technology. Through the use of rich and practical smart cloud function applications, such as jump bar, K song, large game, high-intelligence interactive system, etc., to bring exciting smart cloud life, the ultimate human-computer interaction experience. The one-stop smart cloud service platform can wirelessly connect home multi-terminals to achieve interconnection between TVs, mobile phones, computers, refrigerators, air conditioners, and washing machines. At the same time, the stylish design with global pop elements leads the industry product design trend, perfect match with modern home, and fully matches its high-end image.

So for ordinary consumers, how can we pick a good 4K TV? Relying on personal observation is not reliable. Manufacturers are playing a promotional video that can best reflect the advantages of their products. It is difficult to find the difference by comparison with the naked eye. The more reliable approach is to choose a certified brand. Products that pass the 4K testing and certification will be issued with a certificate and a “certification mark” on the outer packaging of the product, becoming the most important reference for consumers to purchase.