Shenzhen Xintian source Electronics Co., Ltd.
Address：Hongfa Industrial Park 1, 5th Floor, Shiyan Town, Baoan District, Shenzhen
The size indicated on the liquid crystal display screen is consistent with the range that can actually be used. For example, a 15.1 inches LCD is approximately equal to the visual range of 17 inches CRT screen.
Viewing angle LCD monitor symmetrical, and up and down is not necessarily symmetrical. When the incident light through the polarizing plate of the backlight, and a liquid crystal alignment film, the output light will have a certain directional characteristic, that is, most of the light emitted from the screen with a vertical direction. If from a very oblique angle to watch a full white screen, you may see a black or color distortion. In general, the upper and lower angle is less than or equal to about angles. If the viewing angle of about 80 degrees, said in a normal 80 degrees starting position of the screen you can clearly see the screen image. However, due to different human vision scope, if not the best viewing angle stand inside, see the color and brightness will have errors. On the market, most of the LCD viewing angles are 160 degrees. With the development of technology, some manufacturers to develop a variety of wide viewing angle technology, trying to improve the viewing angle characteristics of liquid crystal displays.
Display liquid crystal display manufacturers often asked is how much pitch, but most people do not know is how to get this value. Typically 14 inches LCD viewing area is 285.7mm × 214.3mm, its maximum resolution of 1024 × 768, then the pitch is equal to: visual width / horizontal pixels (or visual height / vertical pixels), that 285.7mm /1024=0.279mm (or 214.3mm / 768 = 0.279mm).
LCD is important, of course, the color performance degrees. We know the nature of any one color are red, green, and blue components of the three primary colors. On the LCD panel is 1024 × 768 pixels of imaging dots, each individual color pixel is composed of red, green and blue (R, G, B) to control the three basic colors. Most manufacturers out of the liquid crystal display, each of the basic colors (R, G, B) reaches 6, the performance of the 64 kinds, each individual pixel have 64 × 64 × 64 = 262144 colors. There are many manufacturers use the so-called FRC (Frame Rate Control) technology to simulate the way to show a full-color picture, that is, each basic color (R, G, B) can reach 8, ie 256 kinds of expressivity , then there is up to each individual pixel 256 × 256 × 256 = 16777216 colors of.
The ratio of the
The ratio of the maximum luminance value is defined (full white) divided by the minimum luminance value (black) ratio. The ratio of the CRT monitor is usually up to 500: 1, so that presents a real all-black screen on the CRT display is very easy. LCD but it is not very easy, and the backlight by a cold cathode ray tube is composed of a switching operation is difficult to do quickly and therefore the backlight is always lit state. In order to get a full black screen, the liquid crystal module must be completely come from the backlight light source is completely blocked, but the physical properties of these components and could not fully meet this requirement, there will always be some light leakage occurs. Generally, the ratio of acceptable to the human eye is about 250: 1.
The maximum brightness of the LCD display is usually determined by the cold cathode-ray tube (backlight) luminance values are generally in the 200 ~ 250 cd / m2 room. LCD brightness is slightly lower, will feel the screen dark. Through years of experience, and now the brightness of the LCD monitor on the market in general are 250cd / m2, more than 24 inches of the display will have a slightly higher, but basically maintained at 300 ~ 400 cd / m2 room, although it is technically possible to achieve higher brightness, but this does not mean brightness values higher the better, because the high brightness of the display is possible to make the viewer's eyes hurt.
Response time refers to the display of each pixel of the liquid crystal response speed to the input signal, this value, of course the smaller the better. If the response time is too long, it is possible to make the LCD monitor when displaying moving images, shadow boxes tailed feeling. LCD response time is generally between 5 ~ 10ms, while the brands of products, generally reached below 5ms response time, the basic tail shadow boxes to avoid problems.