Apparatus and method for compensating regional nonuniformity of a display panel

• US 20060187182A1
• Filed: 02/16/2006
• Published: 08/24/2006
• Est. Priority Date: 02/18/2005
• Status: Abandoned Application

• Current Assignee: Asmedia Technology Incorporated (ASUSTek Computer, Inc.)
• Original Assignee: Asmedia Technology Incorporated (ASUSTek Computer, Inc.)
• Inventors: Yu, Chia-Lei, Hsu, Chih-Hsiung, Chuang, Ming-Chang
• Application Number:
  US11/355,101
• Publication Number:
  US 20060187182A1
• Time in Patent Office: Days
• US Class Current: 345/102
• CPC Class Codes: G09G 2320/0233 Improving the luminance or brightness uniformity across the screen
• CPC Class Codes: G09G 2320/0285 using tables for spatial correction of display data
• CPC Class Codes: G09G 2360/147 the originated light output being determined for each pixel
• CPC Class Codes: G09G 5/10 Intensity circuits

Abstract

Several display regions are defined on a display panel, and each display region has its panel characteristic data. A pixel data is received and the determined display region of the pixel data is determined. The pixel data is calibrated according to the panel characteristic data of the determined display region, and then the calibrated pixel data is transmitted to the display panel.

Claims

1. A method for compensating regional nonuniformity of a display panel, the method comprising:

defining a plurality of display regions on the display panel, wherein each display region has panel characteristic data;

receiving a pixel data;

determining to which display region the pixel data corresponds for a determined display region;

calibrating the pixel data according to the panel characteristic data of the determined display region for a calibrated pixel data; and

correcting the display panel with the calibrated pixel data.

2. The method of claim 1, further comprising:

measuring optical characteristics of each of the display regions; and

establishing the panel characteristic data of each of the display regions according to the optical characteristics of the display regions, wherein the panel characteristic data unify display results of an identical pixel data displayed in the display regions.

3. The method of claim 2, wherein the optical characteristics of the display regions are measured with a colorimeter or a spectrum analyzer.

4. The method of claim 2, wherein the optical characteristics comprise brightness, saturation and hue.

5. The method of claim 2, wherein the panel characteristic data are established based on a maximum or a minimum of the optical characteristics of the display regions.

6. The method of claim 1, wherein a maximum quantity of the display regions is equal to a quantity of pixels of the display panel, and a minimum quantity of the display regions is equal to 2.

7. A method for compensating a pixel data, the method comprising:

receiving the pixel data and determining to which display region on a display panel the pixel data corresponds by a display region interpreter;

calibrating the pixel data by a panel characteristic corrector according to a panel characteristic data of the determined display region stored in a panel characteristic recorder; and

adjusting the display panel according to the calibrated pixel data.

8. The method of claim 7, further comprising:

defining a plurality of display regions on the display panel; and

establishing panel characteristic data of each of the display regions.

9. The method of claim 8, further comprising:

measuring optical characteristics of each of the display regions by an optical characteristic measuring unit; and

establishing the panel characteristic data of each of the display regions according to the optical characteristics of the display regions, and storing the panel characteristic data of the display regions in the panel characteristic recorder, wherein the panel characteristic data unify display results of an identical pixel data displayed in the display regions.

10. The method of claim 9, wherein the optical characteristics comprise brightness, saturation and hue.

11. The method of claim 9, wherein the panel characteristic data are established based on a maximum or a minimum of the optical characteristics of the display regions.

12. The method of claim 7, wherein a maximum quantity of the display regions is equal to a quantity of pixels of the display panel, and a minimum quantity of the display regions is equal to 2.

13. An apparatus for compensating regional nonuniformity of a display panel, the apparatus comprising:

a display region interpreter arranged to determine to which display region a pixel data corresponds, wherein the display panel has a plurality of display regions;

a panel characteristic recorder having panel characteristic data of the display regions, the panel characteristic recorder electrically connected to the display region interpreter and arranged to select the panel characteristic data of the determined display region; and

a panel characteristic corrector electrically connected to the panel characteristic recorder and arranged to calibrate the pixel data according to the corresponding panel characteristic data.

14. The apparatus of claim 13, wherein the panel characteristic corrector is arranged to generate a calibrating data according to the corresponding panel characteristic data and to calibrate the pixel data with the calibrating data.

15. The apparatus of claim 13, wherein a maximum quantity of the display regions is equal to a quantity of pixels of the display panel, and a minimum quantity of the display regions is equal to 2.

16. The apparatus of claim 13, further comprising:

an optical characteristic measuring unit arranged to measure optical characteristics of each of the display regions, wherein the panel characteristic data are established according to the optical characteristics of the display regions, and the panel characteristic data unify display results of an identical pixel data displayed in the display regions.

17. The apparatus of claim 16, wherein the optical characteristic measuring unit is a calorimeter or a spectrum analyzer.

18. The apparatus of claim 16, wherein the optical characteristics comprise brightness, saturation and hue.

19. The apparatus of claim 16, wherein the panel characteristic data are established based on a maximum or a minimum of the optical characteristics of the display regions.

20. The apparatus of claim 13, wherein the display region interpreter, the panel characteristic recorder and the panel characteristic corrector are integrated in an integrated circuit chip.