Display control method and device for N-primary-color display panel, and display device

Patent metadata

Field	Value
Publication number	US-11328645-B2
Application number	US-201816323931-A
Country	US
Kind code	B2
Filing date	May 31, 2018
Priority date	Aug 28, 2017
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

The display control method according to some embodiments of the present disclosure includes: acquiring an M-primary-color input signal from each pixel in an original image, the original image including a plurality of pixels corresponding to the plurality of pixel units respectively, each pixel being configured to display a colored image in M primary colors, M being an integer greater than 1 and smaller than N; and calculating an N-primary-color input signal for a corresponding pixel unit of the N-primary-color display panel in accordance with color coordinates of each primary color for the N-primary-color display panel and the M-primary-color input signal.

First claim

What is claimed is:

1. A display control method for an N-primary-color display panel, wherein the N-primary-color display panel comprises a plurality of pixel units, and each pixel unit comprises subpixels in N primary colors, where N is an integer greater than or equal to 4,
the display control method comprising:
acquiring an M-primary-color input signal from each pixel in an original image, the original image comprising a plurality of pixels corresponding to the plurality of pixel units respectively, each pixel being configured to display a colored image in M primary colors, M being an integer greater than 1 and smaller than N; and
calculating an N-primary-color input signal for a corresponding pixel unit of the N-primary-color display panel in accordance with color coordinates of each primary color for the N-primary-color display panel and the M-primary-color input signal,
wherein the M primary colors in the M-primary-color input signal comprise red (R), green (G) and blue (B),
wherein the N primary colors in the N-primary-color input signal comprise the M primary colors, and at least one primary color X other than the M primary colors,
wherein X out in the N-primary-color input signal for the corresponding pixel unit of the N-primary-color display panel acquired in accordance with the M-primary-color input signal for each pixel in the original image is calculated through the following equation: X out =∂τ ij ×j in +(1−∂)τ ij ×i in , where at least one coordinate value of color coordinates of the primary color X in one direction is located between corresponding coordinate values of color coordinates of primary colors i, j in a chromacity diagram, a primary color k is a primary color other than the primary colors i, j in the primary colors R, G and B, X out represents an input signal for the primary color X of the corresponding pixel unit of the N-primary-color display panel, τ=

L
xi

L
xi

+

L
xj

,

τ
ij

=

min
⁢

⁢

(

i
in

,

j
in

)

max
⁢

⁢

(

l
in

,

j
in

)

,

min (i in ,j in ) represents a minimum value of grayscale values for i and j in the M-primary-color input signal, max (i in ,j in ) represents a maximum value of the grayscale values for i and j in the M-primary-color input signal, L xi represents a distance between a position corresponding to the color coordinates of x and a position corresponding to the color coordinates of i in the chromacity diagram, and L xj represents a distance between the position corresponding to the color coordinates of x and a position corresponding to the color coordinates of j in the chromacity diagram.

2. The display control method according to claim 1 , wherein the calculating the N-primary-color input signal for the corresponding pixel unit of the N-primary-color display panel in accordance with the color coordinates of each primary color for the N-primary-color display panel and the M-primary-color input signal comprises:
calculating a conversion matrix from the M-primary-color input signal to the N-primary-color input signal in accordance with the color coordinates of each primary color for the N-primary-color display panel and the M-primary-color input signal; and
multiplying the M-primary-color input signal with the conversion matrix to acquire the N-primary-color input signal.

3. The display control method according to claim 1 , wherein each pixel unit of the N-primary-color display panel comprises an R subpixel, a G subpixel, a B subpixel, a cyan (C) subpixel and a yellow (Y) subpixel, and each pixel in the original image is configured to display the colored image in R, G and B.

4. The display control method according to claim 3 , wherein the calculating the conversion matrix from the M-primary-color input signal to the N-primary-color input signal in accordance with the color coordinates of each primary color for the N-primary-color display panel and the M-primary-color input signal comprises calculating the conversion matrix T from a three-primary-color input signal for each pixel in the original image to a five-primary-color input signal for the corresponding pixel unit of the N-primary-color display panel through the following equation:

T
=

[

1

0

0

0

1

0

0

0

1

∂

τ

G
⁢
R

(

1
-
∂

)

⁢

τ

G
⁢
R

Assignees

• Boe Technology Group Co Ltd

Inventors

• Dai Bin
• Dong Xue
• Zhang Xiaomang
• Lv Jing
• Chen Dong
• Bi Yuxin
• Xi Yanhui
• Li Xiaolong
• Niu Haijun

Classifications

• G09G5/02

  characterised by the way in which colour is displayed {(details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607)} · CPC title

• G09G3/2003 Primary

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

• G09G2340/06

  Colour space transformation · CPC title

• G09G3/2074 Primary

  using sub-pixels · CPC title

• G09G2300/0452

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