IP Library › Granted Patent US 11,250,770
Granted Patent B1
US 11,250,770 · App. 17/025,406 · Granted Feb 15, 2022

De-jaggy processing system and method for OLED display with curved space

Inventor: Tung Ying Wu (Tainan, TW)
Assignee: Himax Technologies Limited
G09G3/3208G09G3/04G09G2310/0221G09G2320/0233G09G2320/0242G09G2360/16
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Quick Facts
Patent No.
US 11,250,770
App. No.
17/025,406
Granted
Feb 15, 2022
Kind
B1
Abstract

A de-jaggy processing method includes dividing a display area of a display into a plurality of sub-areas; providing a first table composed of gray-level weights associated with corresponding luminances of each primary color for each said sub-area; providing a second table composed of distance-gain weights each correspondingly associated with a distance between a sub-pixel and a reference point; and obtaining a corrected luminance of a sub-pixel of a pixel by multiplying an original luminance of the sub-pixel by a corresponding gray-level weight and a corresponding distance-gain weight.

Claims (30)

1. A de jaggy processing system, comprising:

a gray-level weight device that divides a display area of a display into a plurality of sub-areas, and provides a first table composed of gray-level weights associated with corresponding luminances of only a current frame of each primary color for each said sub-area;

a distance-gain weight device that provides a second table composed of distance-gain weights each correspondingly associated with a distance between a sub-pixel and a reference point; and

a pixel correcting device that obtains a corrected luminance of a sub-pixel of a pixel by multiplying an original luminance of the sub-pixel by a corresponding gray-level weight and a corresponding distance-gain weight.

2. The system of claim 1 , wherein the display comprises an organic light-emitting diode display.

3. The system of claim 1 , wherein distance-gain weights near four corners of the display area have a value less than distance-gain weights at locations other than the four corner.

4. The system of claim 1 , wherein the sub-pixel is located at curved bezel of the display.

5. A de jaggy processing method, comprising:

dividing a display area of a display into a plurality of sub-areas;

providing a first table composed of gray-level weights associated with corresponding luminances of only a current frame of each primary color for each said sub-area;

providing a second table composed of distance-gain weights each correspondingly associated with a distance between a sub-pixel and a reference point; and

obtaining a corrected luminance of a sub-pixel of a pixel by multiplying an original luminance of the sub-pixel by a corresponding gray-level weight and a corresponding distance-gain weight.

6. The method of claim 5 , wherein the display comprises an organic light-emitting diode display.

7. The method of claim 5 , wherein distance-gain weights near four corners of the display area have a value less than distance-gain weights at locations other than the four corner.

8. The method of claim 5 , wherein the sub-pixel is located at curved bezel of the display.

9. A de jaggy processing system, comprising:

an edge level device that provides a table composed of edge-gain weights for each primary color, and determines adjacent sub-pixels for a current sub-pixel of a display; and

a sub-pixel correcting device that obtains a corrected luminance of the current sub-pixel by subtracting or adding weighted luminances of the adjacent sub-pixels from or to an original luminance of the current sub-pixel;

wherein the weighted luminance is obtained by multiplying a luminance of the adjacent sub-pixel by a corresponding edge-gain weight;

wherein the edge-gain weights are associated with corresponding luminance differences between the current sub-pixel and neighboring sub-pixels, the luminance differences being determined by the edge level device.

10. The system of claim 9 , wherein the display comprises an organic light-emitting diode display.

11. The system of claim 9 , wherein the current sub-pixel is located at a straight line of a gray display or a diagonal line of a color display.

12. A de jaggy processing method, comprising:

providing a table composed of edge-gain weights for each primary color;

determining adjacent sub-pixels for a current sub-pixel of a display; and

obtaining a corrected luminance of the current sub-pixel by subtracting or adding weighted luminances of the adjacent sub-pixels from or to an original luminance of the current sub-pixel;

wherein the weighted luminance is obtained by multiplying a luminance of the adjacent sub-pixel by a corresponding edge-gain weight;

wherein the edge-gain weights are associated with corresponding luminance differences between the current sub-pixel and neighboring sub-pixels.

13. The method of claim 12 , wherein the display comprises an organic light-emitting diode display.

14. The method of claim 12 , wherein the current sub-pixel is located at a straight line of a gray display or a diagonal line of a color display.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 18, 2020
From: WU, TUNG YING
To: HIMAX TECHNOLOGIES LIMITED
Reel/Frame 053818/0490 →
Cited By (2)
US 12,315,449 US 12,425,557