Method for displaying image and display device

Patent metadata

Field	Value
Publication number	US-2017193875-A1
Application number	US-201514769085-A
Country	US
Kind code	A1
Filing date	Jan 8, 2015
Priority date	Sep 26, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

Embodiments of the invention disclose a method for displaying image and a display device. In the display panel, 2*2 pixels constitute one repeating group, each repeating group contains two pixels composed of a B sub-pixel and a Y sub-pixel and two pixels composed of a R sub-pixel and a G sub-pixel, and sub-pixels included in neighboring pixels in the horizontal or vertical direction within the repeating group are different, thus compared to the existing arrangement in which three or more sub-pixels constitute one pixel, the number of sub-pixels in each pixel is reduced, enabling the resolution of image displayed to be enhanced under the same fabrication precision. And after converting the received RGB image signal of each pixel of the frame to be displayed into corresponding RG/BY image signal respectively, depending on arrangement of sub-pixels in each pixel of the display panel, image signal corresponding to sub-pixels of each pixel in the display panel is determined based on the RG/BY image signal corresponding to each pixel of the frame to be displayed, then the image is displayed, therefore, normal display can be ensured, image of the frame to be displayed can be rendered better.

First claim

1 . A method for displaying image, comprising:
converting a received RGB image signal of each pixel of a frame to be displayed into corresponding RG/BY image signal respectively; determining image signal corresponding to sub-pixels in each pixel of a display panel based on the RG/BY image signal corresponding to each pixel of the frame to be displayed, depending on an arrangement of sub-pixels in each pixel of the display panel; wherein in the display panel, 2*2 pixels constitute a repeating group, each repeating group comprises two pixels composed of a B sub-pixel and a Y sub-pixel as well as two pixels composed of a R sub-pixel and a G sub-pixel, and sub-pixels included in neighboring pixels in a horizontal or vertical direction are different; is sending the determined image signal corresponding to sub-pixels in each pixel of the display panel to the display panel for displaying.

2 . The method according to claim 1 , wherein the step of converting a received RGB image signal of each pixel of a frame to be displayed into corresponding RG/BY image signal respectively comprises:
computing the RG/BY image signal by the following formulas:
R _ O=R, G _ O=G, B _ O=B, Y _ O =min( R, G );

wherein R represents a value of the received R image signal of each pixel of the frame to be displayed; G represents a value of the received G image signal of each pixel of the frame to be displayed; B represents a value of the received B image signal of each pixel of the frame to be displayed; R_O represents a value of the converted R image signal of each pixel, G_O represents a value of the converted G image signal of each pixel, B_O represents a value of the converted B image signal of each pixel, Y_O represents a value of the converted Y image signal of each pixel.

3 . The method according to claim 1 , wherein the two sub-pixels in each pixel of the display panel are arranged in the horizontal direction or diagonal direction.

4 . The method according to claim 3 , wherein when the two sub-pixels in each pixel of the display panel are arranged in the horizontal direction, the step of determining image signal corresponding to sub-pixels in each pixel of a display panel based on the RG/BY image signal corresponding to each pixel of the frame to be displayed comprises:
in the pixel composed of a R sub-pixel and a G sub-pixel of each repeating group, image signal corresponding to the R sub-pixel equals to corresponding converted R image signal of the pixel in the frame to be displayed, image signal corresponding to the G sub-pixel equals to corresponding converted G image signal of the pixel in the frame to be displayed; in the pixel composed of a B sub-pixel and a Y sub-pixel of each repeating group, image signal corresponding to the Y sub-pixel equals to corresponding converted Y image signal of the pixel in the frame to be displayed, image signal corresponding to the B sub-pixel equals to a mixing value of corresponding converted B image signal of the pixel in the frame to be displayed and B image signal in the RGB image signal of the original pixel in the frame to be displayed corresponding to a pixel adjacent to that pixel comprising the B sub-pixel in the repeating group.

5 . The method according to claim 3 , wherein when the two sub-pixels in each pixel of the display panel are arranged in the diagonal direction, the step of determining image signal corresponding to sub-pixels in each pixel of a display panel based on the RG/BY image signal corresponding to each pixel of the frame to be displayed comprises:
in the pixel composed of a R sub-pixel and a G sub-pixel of each repeating group, image signal corresponding to the G sub-pixel equals to corresponding converted G image signal of the pixel in the frame to be displayed, image signal corresponding to the R sub-pixel equals to a mixing value of corresponding converted R image signal of the pixel in the frame to be displayed and R image signal in the RGB image signal of the original pixel in the frame to be displayed corresponding to a pixel adjacent to that pixel comprising the R sub-pixel in the repeating group; in the pixel composed of a B sub-pixel and a Y sub-pixel of each repeating group, image signal corresponding to the Y sub-pixel equals to corresponding converted Y image signal of the pixel in the frame to be displayed, image signal corresponding to the B sub-pixel equals to a mixing value of corresponding converted B image signal of the pixel in the frame to be displayed and B image signal in the RGB image signal of the original pixel in the frame to be displayed corresponding to a pixel adjacent to that pixel comprising the B sub-pixel in the repeating group.

6 . A display device comprising a display panel and a driving device, wherein in the display panel, 2*2 pixels constitute a repeating group, each repeating group comprises two pixels composed of a B sub-pixel and a Y sub-pixel as well as two pixels composed of a R sub-pixel and a G sub-pixel, and sub-pixels included in neighboring pixels in the horizontal or vertical direction are different; the driving device comprises:
is a receiving unit configured to receive a RGB image signal of each pixel of a frame to be displayed; a converting unit configured to convert the received RGB image signal of each pixel of the frame to be displayed into corresponding RG/BY image signal respectively; a determining unit configured to determine image signal corresponding to sub-pixels in each pixel of the display panel based on the RG/BY image signal corresponding to each pixel of the frame to be displayed, depending on the arrangement of sub-pixels in each pixel of the display panel; a sending unit configured to send the determined image signal corresponding to sub-pixels in each pixel of the display panel to the display panel for displaying.

7 . The display device according to claim 6 , wherein the converting unit is configured to compute the RG/BY image signal by the following formulas:
R _ O=R, G _ O=G, B _ O=B, Y _ O =min( R, G );
wherein R represents a value of the received R image signal of each pixel of the frame to be displayed; G represents a value of the received G image signal of each pixel of the frame to be displayed; B represents a value of the received B image signal of each pixel of the frame to be displayed; R_O represents a value of the converted R image signal of each pixel, G_O represents a value of the converted G image signal of each pixel, B_O represents a value of the converted B image signal of each pixel, Y_O represents a value of the converted Y image signal of each pixel.

8 . The display device according to claim 6 , wherein the two sub-pixels in each pixel of the display panel are arranged in the horizontal direction or diagonal direction.

9 . The display device according to claim 8 , wherein when the two sub-pixels in each pixel of the display panel are arranged in the horizontal direction, the determining unit determines the image signal corresponding to sub-pixels in each pixel of the display panel as follows:
in the pixel composed of a R sub-pixel and a G sub-pixel of each repeating group, image signal corresponding to the R sub-pixel equals to corresponding converted R image signal of the pixel in the frame to be displayed, image signal corresponding to the G sub-pixel equals to corresponding converted G image signal of the pixel in the frame to be displayed; in the pixel composed of a B sub-pixel and a Y sub-pixel of each repeating group, image signal corresponding to the Y sub-pixel equals to corresponding converted Y image signal of the pixel in the frame to be displayed, image signal corresponding to the B sub-pixel equals to a mixing value of corresponding converted B image signal of the

Assignees

• Boe Technology Group Co Ltd

Inventors

• Jin Xiaodan

Classifications

• G09G2340/06

  Colour space transformation · 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

• G09G2300/0452

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

• H04N1/6008

  with primary colour signals, e.g. RGB or CMY(K) · CPC title

• G09G2300/0443

  with several sub-pixels for the same colour in a pixel, not specifically used to display gradations (G09G3/364 takes precedence) · CPC title