1、At present, most of the commonly used LCDs are driven by 6bit for high speed (12ms or less) and 8bit for low speed (20ms or more). Because the processing speed of 6bit is much higher than 8bit (64 times). And the display marked with 16.2M or 16M color is 6bit. The one marked 16.7M is the real 8bit.
2, dithering is achieved by the principle that if the color to be displayed e79fa5e98193e78988e69d8331333365643536, not in the real can display the color, the two nearest colors, using scatter for mixing, and finally in the human eye to produce the desired color feeling. (Complete image processing of dithering principle, refer to the print enlargement pattern)
Each pixel of 8bit can display 16.7M colors, while 6bit only has 260,000. Dithering has a sophisticated algorithm to ensure the uniformity of the mixture of two color dots.
Using grayscale as an example, there are 256 levels of grayscale, 0, 1, 2, 255, and 8bit panels can show each level of grayscale completely. If you want to display a color block with a gray scale of 2, for example, you can only use 50% of the color points of 0 and 4 gray to mix them.
Note! A 6bit panel will never be able to display a single point of grayscale 2 color points! It can only use dithering to simulate the processing of large blocks of colors.
4, 8bit panel drive, the same can be used to dither to form a higher bit of color space depth.
LCD panel is the material that determines the brightness, contrast, color, viewing angle of the LCD monitor, the price trend of the LCD panel directly affects the price of the LCD monitor, the quality of the LCD panel, the quality of the technology is related to the overall performance of the LCD monitor.
Whether the LCD panel can achieve true color display of 16.7M colors, the meaning is that in R.G.B (red, green and blue) three color channels have the ability to physically display 256 levels of gray scale. A variety of factors such as production, merit and market environment are related to the quality, price and market direction of the LCD monitor itself, because an LCD monitor about 80% of its cost are concentrated in the panel.
An LCD monitor is good or bad first depends on its panel, because the panel is good or bad directly affects the picture of the viewing effect, and LCD TV panel accounts for more than half of the cost of the whole machine, is the main factor affecting the cost of LCD TV, so to choose a good LCD monitor, the first thing to do is to choose its panel. LCD panel can largely determine the brightness, contrast, color, viewing angle and other very important parameters of the LCD monitor. LCD panel development is fast, from the previous years of three generations, the rapid development to four generations, five generations, and then skip six generations to reach seven generations, and the newer eighth-generation panel is also in the planning. Production of liquid crystal panel manufacturers mainly for Samsung, LG-Philips, IVT, AUO, BOE, Huaxing photoelectric, etc., due to differences in the level of technology of each, the production of LCD panels are also broadly divided into several different types. Commonly there are TN panels, MVA and PVA and other VA-type panels, IPS panels and CPA panels.
