Reduction of phosphor lag artifacts on display panels
AssigneeThomson Licensing
InventorsCédric Thebault, Sébastien Weitbruch, Herbert Hoelzemann
Life of this patent
Estimating the term…
Abstract
Since the phosphor lag effect results from the slowness of the green and red phosphors and since it is not possible to make these phosphors faster, the blue one has to be made slower in order to reduce the color trail effect. Therefore, a part of the blue component is artificially delayed. Only a certain percentage of the blue component of the actual frame is transmitted during the actual frame, whereas the rest of the blue component will be transmitted during the next frames. The dynamic false contour effect introduced by this video processing may be compensated by subfield shifting.
Claims15
Method for processing video pictures for display on a display device having at least a first kind of luminous elements with a first time response and a second kind of luminous elements with a second time response being slower than the first time response by
- driving a luminous element of said first kind for one frame with a predetermined energy, and
- driving said luminous element of said first kind in one frame with a first part of said predetermined energy and in a following frame with a second part of said predetermined energy.
Device for processing video pictures for display on a display device having at least a first kind of luminous elements with a first time response and a second kind of luminous elements with a second time response being slower than the first time response and driving means for driving a luminous element of said first kind for one frame with a predetermined energy, wherein said driving means enables driving said luminous element of said first kind in one frame with a first part of said predetermined energy and in a following frame with a second part of said predetermined energy.
Dependencies are inferred from the claim text.