Method and apparatus for controlling image display of woled display apparatus and display apparatus

Patent metadata

Field	Value
Publication number	US-2016307493-A1
Application number	US-201515037797-A
Country	US
Kind code	A1
Filing date	Oct 21, 2015
Priority date	Oct 23, 2014
Publication date	Oct 20, 2016
Grant date	—

Abstract

The present disclosure provides a method and an apparatus for controlling image display of a WOLED display apparatus and a WOLED display apparatus. The method includes: converting gray scale data of respective lights with various colors inputted by a signal source into brightness data of the respective lights with various colors; acquiring brightness adjustment data of white sub-pixel lights and brightness adjustment data of the respective lights with various colors on the basis of the brightness data of the respective lights with various colors and proportions of the respective lights with various colors in the white sub-pixel lights; converting the brightness adjustment data of white sub-pixel lights and brightness adjustment data of the respective lights with various colors into gray scale data and outputting and displaying the gray scale data. The above method and apparatus provides a simple calculating method when adjusting the display data and may eliminate color cast.

First claim

1 . A method for controlling image display of a WOLED display apparatus, comprising:
converting gray scale data of respective lights with various colors inputted from a signal source into brightness data of the respective lights with various colors; acquiring brightness adjustment data of a white sub-pixel light and brightness adjustment data of the respective lights with various colors on the basis of the brightness data of the respective lights with various colors and proportions of the respective lights with various colors in the white sub-pixel light; converting the brightness adjustment data of white sub-pixel light and brightness adjustment data of the respective lights with various colors into gray scale data and outputting and displaying the gray scale data; wherein the brightness adjustment data of the white sub-pixel light acquired meet the following two conditions: the brightness data of a light with one color in the lights with various colors is a product of the brightness adjustment data of the white sub-pixel light and a proportion of the light with the one color in the white sub-pixel light; and the brightness data of each one of the lights with other colors in the lights with various colors is greater than a product of the brightness adjustment data of the white sub-pixel light and a proportion of the one of the lights with other colors in the white sub-pixel light.

2 . The method according to claim 1 , wherein the brightness adjustment data of the light with the one color are zero and the brightness adjustment data of each one of the lights with other colors are obtained by subtracting the product of the brightness adjustment data of the white sub-pixel light and the proportion of the one of the lights with other colors in the white sub-pixel light from the brightness data of the one of the lights with other colors.

3 . The method according to claim 1 , wherein acquiring brightness adjustment data of a white sub-pixel light and brightness adjustment data of the respective lights with various colors on the basis of the brightness data of the respective lights with various colors and proportions of the respective lights with various colors in the white sub-pixel light comprises:
selecting one of the respective lights with various colors as a present color light and calculating the brightness adjustment data of the white sub-pixel light when the brightness data of the present color light is a product of the brightness adjustment data of the white sub-pixel light and a proportion of the present color light in the white sub-pixel light; subtracting the product of the brightness adjustment data of the white sub-pixel light and the proportion of each one of the lights with various colors other than the present color light in the white sub-pixel light from the brightness data of the one of the lights with various colors other than the present color light, so as to obtain the brightness adjustment value of each one of the lights with various colors other than the present color light; determining whether or not the obtained brightness adjustment value of each one of the lights with various colors other than the present color light is greater than zero; outputting the brightness adjustment data of the white sub-pixel light and the brightness adjustment data of each one of the lights with various colors other than the present color light and outputting zero as the brightness adjustment data of the present color light in the respective lights with various colors if the brightness adjustment value of each one of the lights with various colors other than the present color light is greater than zero; otherwise, selecting another one of the respective lights with various colors as the present color light and repeating the above steps to recalculate the brightness adjustment data of the white sub-pixel light and the brightness adjustment data of the respective lights with various colors.

4 . The method according to claim 1 , wherein the proportions of the respective lights with various colors in the white sub-pixel light are obtained by measuring color coordinates of light emitted by a white sub-pixel and color coordinates of light emitted by respective sub-pixels of various colors.

5 . The method according to claim 1 , wherein converting gray scale data of respective lights with various colors inputted from a signal source into brightness data of the respective lights with various colors and converting the brightness adjustment data of the white sub-pixel light and brightness adjustment data of the respective lights with various colors into gray scale data are achieved by conversions based on gamma curves of the respective lights with various colors and the white sub-pixel light.

6 . The method according to claim 5 , further comprising: adjusting the gamma curves of the respective lights with various colors and the white sub-pixel light in advance before the conversions based on the gamma curves of the respective lights with various colors and the white sub-pixel light are performed.

7 . The method according to claim 6 , wherein adjusting the gamma curves of the respective lights with various colors in advance comprises:
measuring color coordinates of the respective lights with various colors in a test picture displayed on a display; calculating the proportion of each one of the respective lights with various colors in a target white light by using color coordinates of the target white light and measured color coordinates of the respective lights with various colors; determining the maximum gray scale brightness data of the respective lights with various colors by using the maximum gray scale brightness data of the target white light and the proportions of the respective lights with various colors in the target white light; and adjusting the gamma curves of the respective lights with various colors respectively by using the maximum gray scale brightness data of the respective lights with various colors.

8 . The method according to claim 6 , wherein adjusting the gamma curve of the white sub-pixel light in advance comprises:
measuring color coordinates of the respective lights with various colors and color coordinates of the white sub-pixel light in a test picture displayed on a display, and calculating the proportion of each one of the respective lights with various colors in the white sub-pixel light by using the color coordinates of the respective lights with various colors and the color coordinates of the white sub-pixel light; determining the maximum gray scale brightness data of the white sub-pixel light on the basis of the maximum gray scale brightness values of the respective lights with various colors and the proportion of each one of the respective lights with various colors in the white sub-pixel light; and adjusting the gamma curve of the white sub-pixel light by using the maximum gray scale brightness data of the white sub-pixel light.

9 . The method according to claim 8 , wherein the maximum gray scale brightness data of the white sub-pixel light meets the following two conditions:
the maximum gray scale brightness value of a light with one color in the lights with various colors is a product of the maximum gray scale brightness value of the white sub-pixel light and the proportion of the light with the one color in the white sub-pixel light; and the maximum gray scale brightness value of each one of the lights with other colors in the lights with various colors is greater than a product of the maximum gray scale brightness value of the white sub-pixel light and the proportion of the one of the lights with other colors in the white sub-pixel light.

10 . The method according to claim 9 , whe

Assignees

• Boe Technology Group Co Ltd

Inventors

• Song Danna
• Gai Cuili
• Tseng Szu Heng
• Meng Song
• Wu Zhongyuan

Classifications

• G09G2340/06

  Colour space transformation · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G09G2320/0673

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

• G09G3/2074 Primary

  using sub-pixels · CPC title

• G09G3/2003

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