Display apparatus, method of driving the same and vision inspection apparatus for the same

Patent metadata

Field	Value
Publication number	US-10096290-B2
Application number	US-201715839023-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Dec 10, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A method of driving a display apparatus including generating first gamma correction data of input data using a first gamma look-up table (“LUT”), determining a Mura correction value of the first gamma correction data, adding the Mura correction value to the input data to generate added input data, generating second gamma correction data of the added input data using the first gamma LUT, and driving a pixel in the display panel using the second gamma correction data of the added input data. The Mura correction value is determined after the gamma correction data is generated, and the generating of the added input data is performed prior to any gamma correction being performed on the input data.

First claim

What is claimed is:

1. A method of driving a display apparatus comprising:
generating first gamma correction data of input data using a first gamma look-up table (“LUT”);
determining a Mura correction value of the first gamma correction data;
adding the Mura correction value to the input data to generate added input data;
generating second gamma correction data of the added input data using the first gamma LUT; and
driving a pixel in the display panel using the second gamma correction data of the added input data,
wherein:
the Mura correction value is determined after the gamma correction data is generated; and
the generating of the added input data is performed prior to any gamma correction being performed on the input data.

2. The method of claim 1 , further comprising:
generating third gamma correction data of the second gamma correction data using a second gamma LUT,
wherein:
the gamma correction data generated by the first image corrector is only used as input into the Mura corrector and is not used to perform gamma correction on the input data; and
the gamma correction data generated by the second image corrector is used to perform gamma correction on the added input data.

3. The method of claim 2 , wherein gamma correction data stored in the first gamma LUT corresponds to a first target gamma and gamma correction data stored in the second gamma LUT corresponds to a second target gamma different from the first target gamma.

4. The method of claim 1 , wherein no gamma correction to the input data is performed prior to the generating of the added input data.

5. The method of claim 4 , wherein:
each of the plurality of pixels comprises red, green, and blue sub pixels, the input data comprising red, green, and blue input data;
the Mura correction value is determined using a Mura correction LUT which stores red, green, and blue Mura correction values respectively corresponding to the red, green, and blue gamma correction data; and
the display apparatus is an LCD display device.

Assignees

• Samsung Display Co Ltd

Inventors

• Na Jong-Hee
• Moon Hoi-Sik
• Kim Kang-Hyun
• Jung Woo-Jin
• Chung Jae-Seob
• Han Jung-Suk

Classifications

• G09G2360/145

  the light originating from the display screen · CPC title

• G09G2320/041

  Temperature compensation · CPC title

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2320/0673

  for control of gamma adjustment, e.g. selecting another gamma curve · CPC title

• G09G2320/0693

  Calibration of display systems · CPC title