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Is there a perfect display?


An absolutely flawless apparatus for the purpose of reproducing visual information has not yet been invented. In the meantime, the most suitable medium for depicting static and moving pictures is a flat rectangle, about twenty inches in diagonal, placed fifty centimeters from human eyes. The image on this plane (let’s call it a screen) consists of about one, two million discrete points (we should call them pixels). The correct aspect ratio of the displayed graphic information is 4:3, therefore, the height of the image will be 0.75 of its width. To a large extent, to this day, resolutions from 1024×768 to 1600×1200 pixels are used.

Most likely, there is a perfect flat screen, and if we looked at it with a 40x magnifying glass, we would notice, in fact, the following: square pixels of every color, with which the image is built. But, as everyone knows, to build pixels so perfect, so that they have absolutely no edges, is extremely difficult, and most likely not feasible. Each pixel of a perfect flat screen must be a tiny square that can acquire an arbitrary color – white, blue, green – according to the installation of the control board. And yet, screens with similar pixels still do not exist.

According to this technique, a picture is built, for the most part, and on all possible types of displays: liquid crystal, CRT and plasma. Any subpixel must take on the specified color – red, green or blue (RGB). When each subpixel is lit at full power, they glow white, and when the green and blue subpixels are removed, the red subpixel remains saturated – this is how red is formed, while the rest of the colors are formed in the same way. The distances between the middle pixels are very small (about two, three tenths of a millimeter, depending on the type of display), but, let alone the subpixels, they are completely microscopic, because from a distance we cannot see all this multi-colored chaos and three brightly glowing subpixels. We perceive this trio as the only, pale point.

Conclusion, have a liquid crystal display even a championship cup for color reproduction, contrast and reaction speed – the concept of an ideal is still alien to it. Since the subpixels are broken up over a large area, annoying artifacts are not uncommon, in particular, colored edging on black letters if they are on a white background. The white background, in turn, does not look completely uniform, because the subpixels and pixels are separated from each other by a black grid (BM – Black Matrix – it is needed so that neighboring subpixels do not light up from each other). But, alas, you can’t do anything with this – after all, a perfect screen, even if flat, will not be invented soon.

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