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Subpixel rendering is a method used to increase the effective resolution of a color display device. It takes advantage of each pixel 's composition of individually addressable red, green, and blue components adjacent on the display matrix, called subpixels , and uses them as rendering units instead of pixels.
PenTile RGBW technology, used in LCD, adds an extra subpixel to the traditional red, green and blue subpixels that is a clear area without color filtering material and with the only purpose of letting backlight come through, [24] hence W for white. This makes it possible to produce a brighter image compared to an RGB-matrix while using the same ...
Photographs of various displays, showing various pixel geometries. Clockwise from top left, a standard definition CRT television, a CRT computer monitor, a laptop LCD, and the OLPC XO-1 LC display. The components of the pixels (primary colors red, green and blue) in an image sensor or display can be ordered in different patterns, called pixel ...
This, in the case of a stationary scene, can be measured from a time series of images. Appropriate pixel averaging, through both time (for stationary images) and space (for uniform regions of the image) is often used to prepare the image for sub-pixel resolution measurements. [citation needed]
The original colored ClearType subpixel rendering was tuned to work optimally with horizontal orientation LCD displays where RGB or BGR stripes run vertically. For these reasons, DirectWrite which is the next-generation text rendering API from Microsoft moved away from color-aware ClearType.
The first image is on the right, and was drawn explicitly to demonstrate LCD subpixel positioning, and it compares normal greyscale antialiasing with raw subpixel antialiasing (the ugly kind :-) ) and a sort of "filtered" subpixel antialiasing, along with some color scales to let the user see the way the filter works, how the subpixels are ...
For the majority of images it will consume 60–80% of the power of an LCD. OLED displays use 40% of the power of an LCD displaying an image that is primarily black as they lack the need for a backlight, [35] while OLED can use more than three times as much power to display a mostly white image compared to an LCD. [36] Environmental influences
This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g., red indicates a 4:3 ratio).