Display driver chip and color deviation compensation method thereof
AssigneeNovatek Microelectronics Corp.
InventorHuan-Teng Cheng
Life of this patent
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Abstract
A display driver chip for a flexible display includes a display control circuit and a crease compensation circuit. The display control circuit is coupled to a display panel of the flexible display and configured to provide a driving signal to a corresponding pixel of the display panel. The crease compensation circuit is coupled to the display control circuit and configured to execute a color deviation compensation method. The color deviation compensation method includes obtaining a folding angle of a folding portion of the flexible display; determining a color deviation compensation value for a sub-pixel of the pixel according to the folding angle; and adjusting a sub-pixel value of the sub-pixel according to the color deviation compensation value.
Claims22
A display driver chip for a flexible display, comprising:
- a display control circuit, coupled to a display panel of the flexible display, configured to provide a driving signal to a corresponding pixel of the display panel;
- and
- a crease compensation circuit, coupled to the display control circuit, configured to execute a color deviation compensation method, wherein the color deviation compensation method comprises the following instructions:
- obtaining a folding angle of a folding portion of the flexible display;
- determining a color deviation compensation value for a sub-pixel of the pixel according to the folding angle;
- and
- adjusting a sub-pixel value of the sub-pixel according to the color deviation compensation value;
- wherein the instruction for determining the color deviation compensation value for the sub-pixel of the pixel according to the folding angle comprises:
- determining a first lookup table and a second lookup table according to the sub-pixel, the folding angle and a compensation area;
- obtaining a first compensation value and a second compensation value in the first lookup table and the second lookup table respectively according to the sub-pixel value and a display brightness value (DBV) of the flexible display;
- and
- calculating the color deviation compensation value through interpolation between the first compensation value and the second compensation value based on the folding angle.
A color deviation compensation method, for a display driver chip of a flexible display, comprising:
- obtaining a folding angle of a folding portion of the flexible display;
- determining a color deviation compensation value for a sub-pixel of a pixel according to the folding angle;
- and
- adjusting a sub-pixel value of the sub-pixel according to the color deviation compensation value;
- wherein the step of determining the color deviation compensation value for the sub-pixel of the pixel according to the folding angle comprises:
- determining a first lookup table and a second lookup table according to the sub-pixel, the folding angle and a compensation area;
- obtaining a first compensation value and a second compensation value in the first lookup table and the second lookup table respectively according to the sub-pixel value and a display brightness value (DBV) of the flexible display;
- and
- calculating the color deviation compensation value through interpolation between the first compensation value and the second compensation value based on the folding angle.
Dependencies are inferred from the claim text.