Method for driving display using sub pixel rendering

摘要

A driving method for rendering subpixels of each pixel of a display is provided. The display has a plurality of first pixels and a plurality of second pixels. Each second pixel has a first color subpixel and a second color subpixel, but lacks a third color subpixel. Each first pixel has a second color subpixel and a third color subpixel, but lacks a first color subpixel. The first color subpixel, second color subpixel and third color subpixel are used to represent gray levels of a first color, a second color and a third color respectively. Processes of rendering the subpixels of each pixel are performed based on positions, saturations and brightness of neighboring pixels, such that quality of image displayed on the display could be ensured even though each first pixel lacks the first color subpixel and each second pixel lacks the third color subpixel.

主权项

1. A method for driving a display comprising:
transforming a first gray level value, a second gray level value, and a third gray level value of a first pixel into a first gamma value, a second gamma value, and a third gamma value of the first pixel respectively; transforming a first gray level value, a second gray level value, and a third gray level value of a plurality of second pixels into a first gamma value, a second gamma value, and a third gamma value of the plurality of second pixels respectively, wherein the plurality of second pixels are adjacent to the first pixel; deriving saturation and brightness of each of the plurality of second pixels; deriving a position weighting of each of the plurality of second pixels according to a distance between a first color subpixel of each of the plurality of second pixels and a second color subpixel of the first pixel; deriving a saturation weighting of each of the plurality of second pixels by calculating the difference between a first value and the saturation of each of the plurality of second pixels, wherein the first value is larger than 1 or equal to 1; deriving a brightness weighting of each of the plurality of second pixels by adding a second value to the brightness of each of the plurality of second pixels, wherein the second value is larger than 0 or equal to 0; calculating a weighting product of the position weighting, the saturation weighting and the brightness weighting of each of the plurality of second pixels; setting a priority order of each of the plurality of second pixels according to the weighting product of each of the plurality of second pixels, wherein a second pixel with larger weighting product has a higher priority order; dispatching the first gamma value of the first pixel to the plurality of second pixels to change at least one of the first gamma values of the plurality of second pixels according to the priority orders of the plurality of second pixels; updating the third gamma value of the first pixel according to a first rendering value of each of the plurality of second pixels, wherein the first rendering value of each of the plurality of second pixels is related to the third gamma value of each of the plurality of second pixels; driving the second color subpixel of the first pixel and a third color subpixel of the first pixel according to the second gamma value of the first pixel and the third gamma value of the first pixel after updating the third gamma value of the first pixel; and driving the first color subpixel of each of the plurality of second pixels and a second color subpixel of each of the plurality of second pixels according to the first gamma value of each of the plurality of second pixels and the second gamma value of the plurality of second pixels after dispatching the first gamma value of the first pixel to the plurality of second pixels.