모모The academic unit of brightness in LCD is cd/m2 (Candeira/m2), and the nominal brightness we usually see in LCD indicates the maximum brightness it can achieve when displaying a full white picture. A simpler definition of contrast is the ratio of white brightness to black brightness of the display. For example, when a monitor displays a full white picture (255), the measured brightness value is 200cd/뻺, and the measured brightness of a full black picture is 0.5cd/뻺, so its contrast ratio is 400: 1.From the demand side, lcd display More in line with the psychological expectations of consumers, willing to pay for the things they like. https://www.betopview.com/
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모모0909_LD
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모모Dynamic contrast
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모모At present, the brightness parameters of almost all 22-inch widescreen liquid crystal displays have reached the value of 300cd/m2, which can reach the level of about 250cd/m2 in practical application, and the technology has entered a relatively mature and stable period. Dynamic contrast is mainly to ensure the brightness of bright scenes, and it is dark enough when dark scenes. Therefore, dynamic contrast has obvious practical significance for those applications that need to switch between bright and dark scenes frequently. For computer applications, text processing, surfing the Internet, office work and programming all basically have no big changes in light and shade; The brightness of most games is in a fixed range, and the switching between bright and dim pictures is rare, although it can’t be said that there is no such thing. On the whole, it is the film and television that needs to switch between light and dark scenes frequently in computer applications, so it is necessary to pay attention to the contrast when purchasing entertainment LCD.
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모모0909_LD
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모모Dynamic contrast
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모모From the practical application of dynamic contrast, all the current “dynamic contrast” technologies need to face an important issue: the speed of backlight change. The appearance of LED backlight makes the dynamic contrast of display reach a new height. Because the brightness of the LED backlight changes faster, the LED backlight can brightness level the backlight to a nearly closed state in a very short time. At this time, the black brightness is close to 0, defined by the ratio of white brightness divided by black brightness, and the contrast at this time should be infinite: 1. Limited by the current manufacturer’s test equipment can not test the weaker brightness, it can only be nominally one million: 1. Next, the editor brings you the BenQ V2400 Eco, which is famous for its LED backlight.