Liquid crystal display panel and driving method thereof

Patent metadata

Field	Value
Publication number	US-2016343313-A1
Application number	US-201514433639-A
Country	US
Kind code	A1
Filing date	Jan 6, 2015
Priority date	Dec 29, 2014
Publication date	Nov 24, 2016
Grant date	—

Abstract

A liquid crystal display (LCD) panel and a driving method thereof are provided. The LCD panel includes display pixels each including RGBW display sub-pixels. The method includes: receiving an image data for representing a to-be-displayed image including image pixels; calculating RGBW image sub-pixel data corresponding to the image pixels according to the image data; using a first predetermined number of image pixels as a repeat unit and generating RGBW display sub-pixel data corresponding to a second predetermined number of display pixels by using each repeat unit in a pixel sharing manner, the first predetermined number being greater than the second predetermined number; and using the RGBW display sub-pixel data to drive RGBW display sub-pixels of corresponding display pixels. Accordingly, the edge blur phenomenon can be effectively improved by the image pixel sharing.

First claim

What is claimed is:

1 . A driving method of a liquid crystal display panel, wherein the liquid crystal display panel comprises a plurality of display pixels, each of the plurality of display pixels comprises a red display sub-pixel, a green display sub-pixel, a blue display sub-pixel and a white display sub-pixel; the driving method comprises:
receiving image data, wherein the image data are for representing a to-be-displayed image including a plurality of image pixels; calculating red image sub-pixel data, green image sub-pixel data, blue image sub-pixel data and white image sub-pixel data corresponding to the plurality of image pixels according to the image data; and concretely using grayscale values of a red image sub-pixel, a green image sub-pixel and a blue image sub-pixel of each of the plurality of image pixels as the red image sub-pixel data, the green image sub-pixel data and the blue image sub-pixel data corresponding to the image pixel and using the minimum one of the grayscale values as the white image sub-pixel data corresponding to the image pixel; using six image pixels in the plurality of image pixels as a repeat unit and generating red display sub-pixel data, green display sub-pixel data, blue display sub-pixel data and white display sub-pixel data corresponding to three display pixels in the plurality of display pixels by each repeat unit; using the red display sub-pixel data, the green display sub-pixel data, the blue display sub-pixel data and the white display sub-pixel data to drive the red display sub-pixels, the green display sub-pixels, the blue display sub-pixels and the white display sub-pixels of corresponding display pixels.

2 . The driving method as claimed in claim 1 , wherein the step of using six image pixels in the plurality of image pixels as a repeat unit and generating red display sub-pixel data, green display sub-pixel data, blue display sub-pixel data and white display sub-pixel data corresponding to three display pixels in the plurality of display pixels by each repeat unit comprises:
sharing the red image sub-pixel data and the green image sub-pixel data of a first image pixel and a second image pixel in the six image pixels to generate the red display sub-pixel data and the green display sub-pixel data of a first display pixel in the three display pixels; sharing the blue image sub-pixel data and the white image sub-pixel data of the second image pixel and a third image pixel in the six image pixels to generate the blue display sub-pixel data and the white display sub-pixel data of the first display pixel; sharing the red image sub-pixel data and the green image sub-pixel data of the third image pixel and a fourth image pixel in the six image pixels to generate the red display sub-pixel data and the green display sub-pixel data of a second display pixel in the three display pixels; sharing the blue image sub-pixel data and the white image sub-pixel data of the fourth image pixel and a fifth image pixel in the six image pixels to generate the blue display sub-pixel data and the white display sub-pixel data of the second display pixel; sharing the red image sub-pixel data and the green image sub-pixel data of the fifth image pixel and a sixth image pixel in the six image pixels to generate the red display sub-pixel data and the green display sub-pixel data of a third display pixel in the three display pixels; and sharing the blue image sub-pixel data and the white image sub-pixel data of the sixth image pixel in the six image pixels and a first image pixel in next repeat unit to generate the blue display sub-pixel data and the white display sub-pixel data of the third display pixel.

3 . The driving method as claimed in claim 2 , wherein the six image pixels are adjacently arranged along a row direction of the to-be-displayed image, and the three display pixels are adjacently arranged along a row direction of the liquid crystal display panel.

4 . A driving method of a liquid crystal display panel, wherein the liquid crystal display panel comprises a plurality of display pixels, each of the plurality of display pixels comprises a red display sub-pixel, a green display sub-pixel, a blue display sub-pixel and a white display sub-pixel; the driving method comprises:
receiving image data, wherein the image data are for representing a to-be-displayed image including a plurality of image pixels; calculating red image sub-pixel data, green image sub-pixel data, blue image sub-pixel data and white image sub-pixel data corresponding to the plurality of image pixels according to the image data; using a first predetermined number of image pixels in the plurality of image pixels as a repeat unit and generating red display sub-pixel data, green display sub-pixel data, blue display sub-pixel data and white display sub-pixel data corresponding to a second predetermined number of display pixels by using each repeat unit in a pixel sharing manner, wherein the first predetermined number is greater than the second predetermined number; using the red display sub-pixel data, the green display sub-pixel data, the blue display sub-pixel data and the white display sub-pixel data to drive the red display sub-pixels, the green display sub-pixels, the blue display sub-pixels and the white display sub-pixels of corresponding display pixels.

5 . The driving method as claimed in claim 4 , wherein the step of calculating red image sub-pixel data, green image sub-pixel data, blue image sub-pixel data and white image sub-pixel data corresponding to the plurality of image pixels according to the image data comprises:
using grayscale values of a red image sub-pixel, a green image sub-pixel, and a blue image sub-pixel of each of the image pixels as the red image sub-pixel data, the green image sub-pixel data and the blue image sub-pixel data corresponding to the image pixel, and using the minimum one of the grayscale values as the white image sub-pixel data corresponding to the image pixel.

6 . The driving method as claimed in claim 4 , wherein the step of using a first predetermined number of image pixels in the plurality of image pixels as a repeat unit and generating red display sub-pixel data, green display sub-pixel data, blue display sub-pixel data and white display sub-pixel data corresponding to a second predetermined number of display pixels by using each repeat unit in a pixel sharing manner comprises:
using six image pixels as the repeat unit and generating the red display sub-pixel data, the green display sub-pixel data, the blue display sub-pixel data and the white display sub-pixel data corresponding to three display pixels by using each repeat unit.

7 . The driving method as claimed in claim 6 , wherein the step of using six image pixels as the repeat unit and generating the red display sub-pixel data, the green display sub-pixel data, the blue display sub-pixel data and the white display sub-pixel data corresponding to three display pixels by using each repeat unit comprises:
sharing the red image sub-pixel data and the green image sub-pixel data of a first image pixel and a second image pixel in the six image pixels to generate the red display sub-pixel data and the green display sub-pixel data of a first display pixel in the three display pixels; sharing the blue image sub-pixel data and the white image sub-pixel data of the second image pixel and a third image pixel in the six image pixels to generate the blue display sub-pixel data and the white display sub-pixel data of the first display pixel; sharing the red image sub-pixel data and the green image sub-pixel data of the third image pixel and a fourth image pixel in the six image pixels to generate the red display sub-pixel data and the green display sub-pixel data of a second displa

Assignees

• Shenzhen China Star Optoelect

Inventors

• Ji Feilin
• Chen Wei
• Tan Xiaoping

Classifications

• G09G2300/0452

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

• G09G3/2074

  using sub-pixels · CPC title

• G09G3/36

  using liquid crystals · CPC title

• G09G3/2003

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

• G09G3/3607 Primary

  for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127) · CPC title