The main parameters of the LCD display module

1, resolution resolution is a very important performance indicators. It refers to the number of points on the screen that can be displayed horizontally and vertically (the lines and faces on the screen are made up of points), the higher the resolution, the more information that can be accommodated in the same screen. For a CRT capable of supporting 1280x1024 resolution, both 320x240 and 1280x1024 resolution can be shown more perfectly (because the electron beam can be flexibly adjusted). But its maximum resolution may not be the most appropriate resolution, because if the 17-inch display to 1280x1024 resolution, then, WINDOWS fonts will be very small, over time it is easy to eye fatigue, so the optimum resolution 17-inch monitor Should be 1024x768. 

2, contrast LCD screen LCD panel manufacturing selection of the control IC, filters and directional film and other accessories, and the contrast of the panel, the average user, the contrast can reach 350: 1 is enough, but in the professional field The contrast level can not meet the needs of users. Relative to the CRT monitor easily reach 500: 1 or even higher contrast ratio. Only high-end LCD monitor to achieve this level, because the contrast is difficult to accurately measure through the instrument, so pick the time or to personally go to their own job. 

3, brightness LCD is a solid between the liquid and the liquid between the material itself is not glowing, with the need for additional light source Caixing. Therefore, the number of tubes is related to the brightness of the liquid crystal display. The earliest LCD display module LCD monitor only two lights up and down, the development of the current, universal is the lowest four lights, high-end is six lights. Four lamp design is divided into three kinds of display: one is the four sides have a lamp, but the disadvantage is that there will be shadows in the middle, the solution is from top to bottom four lamps flat arrangement of the way, The last one is "U" type of display, in fact, two lights produced in disguise two lamps. Six lamp design is the actual use of three lamp, the manufacturers will be bent into three "U" type, and then placed in parallel to achieve the effect of six lamps.

4, the signal response time Response time refers to the liquid crystal display module LCD display for the input signal response speed, that is, the liquid crystal from dark to light or bright turn from the dark reaction time, usually in milliseconds (ms) as a unit. To clarify this point we have to talk about the perception of dynamic images from the human eye. The presence of "visual remnants" in the human eye, high-speed movement of the picture in the human mind will form a short impression. Cartoons, movies, etc. Until now the latest game is the application of the principle of visual residuals, so that a series of gradient images in front of people quickly display, they form a dynamic image. People can accept the screen display speed is generally 24 per second, which is the film 24 frames per second playback speed of the origin, if the display speed is lower than this standard, people will obviously feel the screen pause and discomfort. According to this indicator, each screen shows the time required less than 40ms. In this way, for the liquid crystal display, the response time of 40ms has become a homeless, less than 40ms of the display will be obvious "trailing" or "blur" phenomenon, people have a sense of chaos. If you want the image to reach the level of smooth, you need to reach 60 frames per second speed. 5, viewing angle LCD viewing angle is a headache problem, when the backlight through the polar film, LCD and orientation layer, the output of light will have a direction. That is, most of the light is shot out from the screen in the vertical, so from a larger point of view of the LCD monitor, they can not see the original color, or even only see the whole white or all black. In order to solve this problem, manufacturers have also started to develop wide-angle technology, so far there are three more popular technologies, namely: TN + FILM, IPS (IN-PLANE -SWITCHING) and MVA (MULTI-DOMAIN VERTICAL alignMENT).