Brightness refers to the brightness of the picture, the unit is candelas per square meter (cd/m2) or nits, that is, the candle light per square meter. At present, there are two ways to increase the brightness, one is to increase the light passing rate of the LCD panel; the other is to increase the brightness of the background light, that is, to increase the number of tubes.
It should be noted that brighter products are not necessarily the better products. Excessive display screens often make people feel uncomfortable. On the one hand, they can easily cause visual fatigue. At the same time, they also reduce the contrast between pure black and pure white and affect the color scale. And grayscale performance. Therefore, while increasing the brightness of the display, it is also necessary to increase the contrast, otherwise the entire display will appear whitish. In addition, the brightness uniformity is also very important, but usually not marked in the LCD product specification. The brightness is even or not, and the number of backlight sources and mirrors is closely related to the configuration mode. The display with better quality has uniform brightness, soft and unobtrusive, and no obvious dark areas.
Now in the technical research of LCD brightness, it has reached 800 or even higher, and it is already close to the standard of CRT display. In addition, the brightness of the liquid crystal display has a different nominal mode, such as a typical brightness of 350, and the maximum brightness may be 400. Specifically, the manufacturers generally do not specify. Therefore, in a certain range, the quality of the display cannot be distinguished only by parameters. When purchasing a liquid crystal display, factors such as contrast must be comprehensively taken into consideration. It is preferable to actually watch the display effect.
It should be noted that brighter products are not necessarily the better products. Excessive display screens often make people feel uncomfortable. On the one hand, they can easily cause visual fatigue. At the same time, they also reduce the contrast between pure black and pure white and affect the color scale. And grayscale performance. Therefore, while increasing the brightness of the display, it is also necessary to increase the contrast, otherwise the entire display will appear whitish. In addition, the brightness uniformity is also very important, but usually not marked in the LCD product specification. The brightness is even or not, and the number of backlight sources and mirrors is closely related to the configuration mode. The display with better quality has uniform brightness, soft and unobtrusive, and no obvious dark areas.
Now in the technical research of LCD brightness, it has reached 800 or even higher, and it is already close to the standard of CRT display. In addition, the brightness of the liquid crystal display has a different nominal mode, such as a typical brightness of 350, and the maximum brightness may be 400. Specifically, the manufacturers generally do not specify. Therefore, in a certain range, the quality of the display cannot be distinguished only by parameters. When purchasing a liquid crystal display, factors such as contrast must be comprehensively taken into consideration. It is preferable to actually watch the display effect.
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