LCD manufacturers talk about LCD technology

   LCD screen manufacturers talk about LCD technology, in the display technology is to high-definition, low electromagnetic radiation, low power consumption and small size and other direction of development today. Although the CRT (cathode ray tube) display production technology more and more mature, the screen display quality is getting better and better, but its volume and radiation problems are still by its own physical characteristics are inevitable. Therefore, the LCD display on its small size, light weight, no radiation, and other characteristics to speed up the replacement of the traditional CRT monitor pace, but also many people as CRT terminator. Here we talk about the LCD monitor works.

LCD screen manufacturers of liquid crystal display is the most important material is the liquid crystal, it is a regular arrangement of organic compounds, is a kind of material between the solid and liquid, is generally used in the molecular arrangement is most suitable for manufacturing Liquid crystal display nematic fine column type liquid crystal. The physical characteristics of the liquid crystal is: when the power conduction, the order of the order of the molecules, so that light easily through; no power when the molecular arrangement of chaos, to prevent the passage of light. So that liquid crystal molecules such as the gate to block or let the light penetrate. Most of the liquid crystal is an organic complex material, composed of long rod-like molecules. In the natural state, the long axes of these rodlike molecules are substantially parallel. The liquid crystal into a well-machined slotted plane, liquid crystal molecules will be arranged along the slot, so if those slots are very parallel, then the molecules will be completely parallel. Technically, the LCD panel contains two very fine no sodium glass material, called Substrates, the middle sandwiched a layer of liquid crystal. When the light beam through this layer of liquid crystal, the liquid crystal itself will be arranged to stand or twisted irregularly, so the barrier or the smooth passage of light.

LCD panel manufacturers from the LCD monitor structure, whether it is a laptop or desktop system, the use of the LCD display is composed of different parts of the layered structure. The LCD of the LCD manufacturer is made of two glass plates, about 1mm thick, separated by a uniform interval of 5μm containing liquid crystal material. Since the liquid crystal material itself does not emit light, so on both sides of the display are provided as a light source of the lamp, and in the back of the LCD screen has a backlight (or light plate) and reflective film, the backlight is composed of fluorescent substances Can emit light, its role is to provide a uniform background light source. The light emitted by the backlight plate enters the liquid crystal layer containing thousands of liquid crystal droplets after passing through the first layer of the polarizing filter layer. The droplets in the liquid crystal layer are contained in a small cell structure, and one or more cells constitute a pixel on the screen. Between the glass plate and the liquid crystal material is a transparent electrode, the electrode is divided into rows and columns, at the intersection of rows and columns, by changing the voltage to change the liquid crystal rotation state, the role of liquid crystal material similar to a small light valve. The periphery of the liquid crystal material is the control circuit portion and the driving circuit portion. When the electrode in the LCD generates an electric field, the liquid crystal molecules are distorted, so that the light passing through them is regularly refracted, and then filtered through the filter of the second layer on the screen.

Liquid crystal display technology also has weaknesses and technical bottlenecks, and CRT monitors compared to brightness, picture uniformity, viewing angle and response time there are significant gaps. Which the reaction time and viewing angle depends on the quality of the LCD panel, screen uniformity and auxiliary optical module has a great relationship. The brightness of the LCD display depends mainly on the backlight.

For liquid crystal displays, the brightness is often related to his backplane light source. The brighter the backplane light source will also increase the brightness of the entire LCD display. In the early liquid crystal display, because only two cold light source lamp, often resulting in uneven brightness and other phenomena, while the brightness is also unsatisfactory. Until the later use of four cold light source lamp product launch, only no small improvement.

Signal response time is the LCD screen manufacturers LCD liquid crystal cell response delay. In fact refers to the time required for the liquid crystal cell to transition from one molecular permutation state to another molecular permutation state. The smaller the response time is, the more it reflects the speed at which each pixel of the liquid crystal display responds to the input signal The pixel is turned from dark to bright or dark. The smaller the response time, the user will not be able to see the feeling of silhouette dragging while watching the motion picture. Some manufacturers will reduce the concentration of conductive ions in the liquid crystal to achieve a rapid response to the signal, but its color saturation, brightness, contrast will produce a corresponding reduction, or even produce color cast phenomenon. This signal response time up, but at the expense of the LCD display. Some manufacturers such as "pure sector" is used in the display circuit by adding a piece of IC image output control chip, specifically for the display signal processing methods to achieve. LCD screen manufacturers IC chip can be based on VGA output graphics signal frequency, adjust the signal response time. Since there is no change in the physical properties of the liquid crystal, so its brightness, contrast, color saturation have no effect, this method of manufacturing costs are relatively high.

From the can be seen, the quality of liquid crystal panel does not fully represent the quality of liquid crystal display, no excellent display circuit with no matter how good the panel is not OK.