The pixel pitch of LCD TV refers to the pixel pitch, that is, the distance between two adjacent pixel points on the display screen. The display screen we see is actually formed by many dots, and the fineness of the image quality is determined by the dot pitch. The dot pitch is calculated by dividing the panel size by the pixel value.
The most important component of an LCD TV is the LCD Panel, which is also the LCD screen. The level of LCD panel technology and quality are related to the functional parameters, display effect and service life of the entire product. The type of panel determines the level of most parameters of the panel, such as resolution, contrast, response time, viewing angle, etc. At present, the main types of LCD TV panels include TN, VA, IPS, etc.
TN (Twisted Nematic) panel is mainly derived from the development of LCD monitors. It is a mid-to-low-end panel. It does not have the ability to display 16.7M colors, which is a 6-bit pseudo-color panel in the usual sense. , rather than an 8-bit true color panel, and the viewing angle of the TN panel is usually within 160°.
VA (Vertical Alignment) panel is a widely used type at present. It is divided into two types, one is the MVA (Multi-domain Vertical Alignment) type led by Fujitsu, and the other is the MVA (Multi-domain Vertical Alignment) type dominated by Fujitsu. The first is the PVA (Patterned Vertical Alignment) type launched by Samsung. The biggest feature of this kind of panel is that it has 16.7M true color and wide viewing angle, which is more suitable for LCD TVs for home entertainment.
IPS (In-Plane Switching) panel is a panel launched by Hitachi in 2001. Technically, it uses the plane switching of liquid crystal molecules to improve the viewing angle. Since the upper panel is manufactured without additional compensation film , the screen is more transparent and the colors are more delicate. However, slow response time and difficulty in improving contrast are major issues that restrict the popularity of this type of panel. The second-generation IPS panel, the S-IPS panel, introduces new technology to improve the grayscale reversal phenomenon at certain angles. At present, in addition to the IPS Alpha company established by the three major companies Hitachi, Mitsubishi and Panasonic, which uses this type of panel, LG-Philips also uses panels with IPS technology as its main feature.
In addition, Sharp independently developed and manufactured ASV (Advanced Super-V) panels and NEC's unique ExtraView panels, both of which are unique technology products of the two companies. In fact, ASV is strictly an image enhancement technology, not a panel type. However, the LCD screen manufactured by Sharp is a patented product using this technology. At present, this technology has gradually been opened to Taiwan Chi Mei under authorization.