Do you know what are the two common technical parameters for high brightness display screens? Below, the editor will take everyone to understand.
1、 Contrast
The control IC, filter, and directional film used in the manufacturing of LCD display screens are related to the contrast of the panel. For ordinary users, a contrast of 350:1 is sufficient, but in professional fields, such contrast cannot meet the needs of users. Compared to CRT displays that can easily achieve a contrast ratio of 500:1 or even higher, only high-end LCD displays can achieve this level. First tier brands such as Samsung, Asus, and LG in the market now have LCD monitors that can achieve a 1000:1 contrast level. However, due to the difficulty of accurately measuring contrast with instruments, it is still necessary to personally inspect them when selecting.
Contrast is very important, which can be said to be a more important indicator for selecting LCD screens than highlights. When you understand that your customers buy LCD screens for entertainment and watching DVDs, you can emphasize that contrast is more important than no negative points. When watching streaming media, the brightness of the film source is generally not high, but to see the contrast between the brightness of the character scene and the texture change from gray to black hair, it depends on the level of contrast, In the 256 level grayscale test of the testing software, being able to see more small gray grids clearly when viewed at head up indicates good contrast.
2、 Brightness
LCD liquid crystal display screen is a substance between solid and liquid, which cannot emit light and requires the use of additional light sources. Therefore, the number of tubes is related to the brightness of LCD displays. The earliest LCD displays only had two light tubes on top and bottom, with the lowest being four lights for popular models and six lights for high-end ones. The four tube design can be divided into three placement forms: one is to have one tube on each of the four sides, but the disadvantage is that there will be black shadows in the middle. The solution is to arrange the four tubes horizontally from top to bottom, and the last one is a "U" - shaped placement form, which is actually the two tubes produced by two lamps in a disguised form. The six tube design actually uses three tubes, and the manufacturer bends all three tubes into a "U" shape and places them parallel to achieve the effect of six tubes.

Brightness is also a relatively important indicator. The brighter the LCD, the more it stands out from a row of LCD walls. The high brightness technology we often see in CRT is to increase the current of the cathode tube, bombard the fluorescent powder, and produce a brighter effect. Such technology is generally exchanged for sacrificing image quality and monitor lifespan. All products using this type of technology are generally bright by default, Always press a button to execute, press 3X to play the game; Press it again to turn it into a 5X highlight to watch the DVD, and upon closer inspection, it will become blurry. To read the text, you need to return to the normal text mode honestly. This design is actually to prevent people from frequently using highlights. The principle of brightness for LCD screens is different from that of CRTs, as they are achieved by the brightness of the backlight tubes behind the panel. So the light tubes need to be designed more in order to emit light evenly. But all bright panels will have a fatal flaw, as the screen will leak light. Leakage refers to the fact that under a completely black screen, the LCD is not black, but turns white and gray. Therefore, a good LCD should not only emphasize brightness, but also emphasize contrast more.
Ruxin Gaoliang is committed to creating long-term value for our customers. We are a high-quality domestic LCD display manufacturer with 13 years of experience in research, development, production, and sales, specializing in various types such as high brightness screens, bar screens, and small-sized LCD screens. We provide one-on-one professional services for you.