Data processing method and device, driving method, display panel and storage medium

Patent metadata

Field	Value
Publication number	US-10867579-B2
Application number	US-201916400597-A
Country	US
Kind code	B2
Filing date	May 1, 2019
Priority date	Jul 23, 2018
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A data processing method, an image display driving method, a data processing device, a display panel and a computer-readable storage medium are provided. The data processing method includes: based on input RGB grayscale values, calculating a chromaticity coordinate of the input RGB grayscale values on a chromaticity diagram, in which the chromaticity diagram includes a white basic point; calculating to obtain intermediate grayscale values containing a white component, based on the input RGB grayscale values and according to a position relationship between the chromaticity coordinate and the white basic point; and adjusting the intermediate grayscale values to obtain output RGBW grayscale values.

First claim

What is claimed is:

1. A data processing method, comprising :
based on input RGB grayscale values, calculating a chromaticity coordinate of the input RGB grayscale values on a chromaticity diagram, wherein the chromaticity diagram comprises a white basic point;
determining a calculation formula for calculating intermediate grayscale values containing a white component according to a position relationship between the chromaticity coordinate and the white basic point, calculating the input RGB grayscale values according to the calculation formula to obtain the calculating intermediate grayscale values containing the white component, wherein the white component represents a grayscale value corresponding to the white base point; and
adjusting the intermediate grayscale values to obtain output RGBW grayscale values,
wherein the input RGB grayscale values comprise an input R sub-grayscale value, an input G sub-grayscale value and an input B sub-grayscale value; and
calculating the chromaticity coordinate of the input RGB grayscale values on the chromaticity diagram based on the input RGB grayscale values, comprises:
calculating tri-stimulus values of the chromaticity coordinate according to the input RGB grayscale values; and
calculating the chromaticity coordinate according to the tri-stimulus values,

wherein a formula for calculating the tri-stimulus values is expressed as:

(

X
0

Y
0

Z
0

)

=

(

X
R

X
G

X
B

X
w

Y
R

Y
G

Y
B

Y
w

Z
R

Z
G

Z
B

Z
w

)

⁢

(

R
0

G
0

B
0

0

)

wherein X 0 , Y 0 and Z 0 represent the tri-stimulus values, and Y 0 represents an actual brightness value under the input RGB grayscale values, R 0 represents the input R sub-grayscale value, G 0 represents the input G sub-grayscale value, B 0 represents the input B sub-grayscale value, and X R , Y R , Z R , X G , Y G , Z G , X B , Y B , Z B , X W , Y W , and Z W are conversion coefficients and are constants;
formulas for calculating the chromaticity coordinate are expressed as follows:

x
0

=

X
0

X
0

+

Y
0

+

Z
0

,

⁢

y
0

=

Y
0

X
0

+

Y
0

+

Z
0

,

wherein the chromaticity coordinate comprises x 0 and y 0 ,
the chromaticity diagram further comprises a red basic point, a green basic point and a blue basic point; and
determining the calculation formula for calculating the intermediate grayscale values containing the white component according to the position relationship between the chromaticity coordinate and the white basic point, calculating the input RGB grayscale values according to the calculation formula to obtain the calculating intermediate grayscale values containing the white component comprises:
determining the position relationship between the chromaticity coordinate and the white basic point according to the red basic

Assignees

• Boe Technology Group Co Ltd

Inventors

• Sun Yan
• Zhang Xiaomang
• Xi Yanhui
• Shuai Chuan
• Dai Bin

Classifications

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G3/36 Primary

  using liquid crystals · CPC title

• G09G2300/0452

  Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components · CPC title

• G09G2340/06

  Colour space transformation · CPC title

• G09G5/04

  using circuits for interfacing with colour displays · CPC title