â— Plasma screen
The screen (also called the panel) is the most important component of the plasma TV, accounting for 60 to 70% of the total cost of the machine. The quality of the screen directly determines the pros and cons of the flat-screen TV. At present, only a few manufacturers in the world such as LG, Samsung, and Panasonic in Japan have the production capacity of plasma screens. Among them, LG's A3 production line is recognized as the most advanced plasma production line. To a large extent, the choice of plasma TV is the choice of plasma screen.
The filter technology of different plasma screens is also different. The traditional filter technology uses a glass external screen, and the viewing effect is easily affected by the external environment. To this end, major manufacturers have introduced filter technologies to improve image quality, such as Panasonic's "new deep black filter layer", Samsung's "beautiful light technology" and so on. The latest filter technology is LG's breakthrough in hardware. It uses a very thin film made of special materials to replace the filter glass outside the ordinary plasma screen. Since the filter film can effectively prevent the ghosting and chaotic reflection phenomenon produced by the glass, the data shows that the brightness and contrast are improved by 5% and 20%, respectively, and the image quality effect is significantly better than the traditional filter glass.
At present, from the market point of view, although many manufacturers are also purchasing LG's plasma panels, unfortunately due to patents and other reasons, LG has not yet transferred the filter film technology. Fortunately, LG seems to have plans to promote the technology on a large scale this year, and there are already a variety of filter plasmas available on the market.
â— Resolution
Resolution is the main indicator that determines the clarity of the TV picture. Generally, the horizontal and vertical numbers of the smallest bright spots (pixels) on the screen are used to represent the resolution of the flat-screen TV screen. Generally, 852 & TImes; 480 is called VGA, which is "standard definition"; ; 768 is called XGA, which belongs to the internationally recognized "high-definition" standard.
In addition, some manufacturers have adopted a resolution of 1024 × 1024, known as "megapixels." This TV screen adopts a relatively special technology, which allows the dots in the singular and double lines in the longitudinal direction to emit light alternately, and may slightly flicker when viewed at close range.
â— Contrast and brightness
Contrast and brightness are important indicators for measuring the advantages and disadvantages of plasma TVs. The two complement each other and cannot be viewed in isolation. At present, the contrast of top plasma products should reach 5000: 1 and the brightness should reach 1500 lumens. In this way, when the brightness is sufficient, the colors are delicate and the layers are clear. Even if there are some court shadows during the football game, the picture is also natural and clear.
â— Chip technology
In addition to the above key indicators, TV chip technology (often referred to as the TV engine) is also important. Represented by Sony's "Guixiang Engine" in the era of CRT TV and LG's "XD engine" in the era of flat-panel TV, TV chip technology has played an important role in signal processing and image quality improvement. What is gratifying is that the domestic brand has also recently developed chip technology with independent intellectual property rights. If it continues to improve in terms of stability and maturity, I believe there is much to do.
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