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How To Choose LCD Display?

There are many brands TFT LCD display on market, are you curious about how to choose? You refer to follow parameters:

1. Brightness: Brightness is an important indicator of the LCD display. The low brightness caused by technical reasons will directly affect the visual experience of the LCD display, let alone the experience. The indicator of brightness is usually expressed in cd/m2. The image performance that can be obtained by a liquid crystal display reaching 200cd/m2 may already surpass that of a traditional CRT display. Of course, the higher the brightness indicator, the higher the display contrast, and the color of the picture. The brighter and brighter it is, the brightness of the current mainstream 15-inch LCD monitors is mostly 200~350cd/m2. Technically speaking, LCD brightness and its uniformity are related to the number, brightness and arrangement of backlight tubes.

2. Contrast: because the contrast is difficult to measure accurately by the instrument, it often becomes one of the more controversial indicators. But one thing is the consensus of the industry - greater contrast is not better, and it must be matched with brightness to create beautiful colors. Only a suitable contrast ratio can make the liquid crystal display the ideal gray scale and color scale, so as to realize the full and rich image effect.

3. View angle: This indicator defines the range of the picture that can be viewed. If the viewing angle is relatively small and the user's line of sight is slightly off (that is to say, it is not facing the screen), because the brightness of the picture outside the viewing angle area is weak, the display picture cannot be seen clearly or even at all.

4. Response time: This indicator determines the performance of the LCD display for fast moving pictures. The short response time will result in a clean picture, and the long response time may lead to afterimages, tailing and other phenomena, especially when playing fast pictures. When the time is too long, a delay will inevitably occur, which has become a major obstacle to enjoying DVDs and playing games. The indicator unit of this technology is ms, and 25ms has become the standard response time of most LCD monitors. While still incomparable to CRT monitors, there is no longer any noticeable smearing when watching DVDs and playing most games. For this indicator, it should be noted that many manufacturers use the half-time response time instead of the full-time method.

5. Appearance: the reason why the LCD screen has attracted the attention and favor of consumers is that in addition to its own characteristics such as no radiation, the novel shape design and the fact that it does not take up too much space are its highlights. When choosing a style you like.

What is the Principle Structure of LCD Screen?

Many things rely on the LCD screen, in our life, work, entertainment, etc., but few people know the working principle and internal structure of the LCD screen.

LCD display principle

The working principle of LCD display  is simple, the screen can realize the display between the two parallel plates filled with liquid crystal material, and then change the arrangement of the molecules inside the liquid crystal material by voltage, so as to achieve the purpose of shading and light transmission To display images of different shades and staggered patterns, and as long as a three-color filter layer is added between the two flat plates, a color image can be displayed.

LCD display structure

In fact, the LCD screens we see every day have glass substrates. This kind of glass substrate has extremely high requirements and must be produced by float glass, and the flatness of the surface must be very good, and at the same time, it must be very thin. The surface of the glass substrate must be coated with a conductive layer of indium oxide or tin oxide and must be transparent, which is the ITO film layer in the lcd liquid crystal display. The outer leads of the glass substrate should be welded by a special welding method, using conductive rubber strips or conductive tapes for welding, which is significantly different from the tin welding in our perception. The glass substrate is a very precise component. As long as a little damage is caused, the glass substrate will be scrapped. So his internal structure is complex and delicate.

How to Clean LCD Screen?

No matter indoor or outdoor LCD screen, there will be dust on the LCD screen. After turned off the device, it will be more obvious, and sometimes it is sticked with all kinds of water stains and fingerprints, which affects the visual effect. How to clean the LCD screen?

1. First, turn off the power of the LCD screen, and remove the plug of the power cord and the connector of the graphics card.

2. Second, move the LCD screen to a place with better natural light, so that the dust can be seen clearly, so as to achieve a better cleaning effect.

3. Then, use clean water and a soft lint-free cloth or pure cotton lint-free cloth as a cleaning tool for the LCD screen (a lint-free paper towel will also work). When cleaning, you can use a pure cotton lint-free cloth dipped in water and then slightly wrung out, and then gently wipe the dust on the display with a slightly damp soft lint-free cloth (do not squeeze the display too hard). Wipe one side of the screen to the other side until it's all wiped clean, don't wave it randomly.

Remember not to wipe with hard cloth or paper. At the same time, do not use cleaning liquids containing alcohol or acetone or cleaning agents containing chemical ingredients, and do not spray liquids directly on the surface of the LCD screen to prevent liquids from penetrating into the protective film.

4. Finally, after cleaning the LCD screen with a damp soft cloth, you can clean it again with a damp cloth that has been twisted dry. Finally, let the moisture on the LCD screen dry naturally in a ventilated place.