Methods and apparatuses for driving display panel, and display devices

Patent metadata

Field	Value
Publication number	US-11615741-B2
Application number	US-202117327991-A
Country	US
Kind code	B2
Filing date	May 24, 2021
Priority date	Apr 4, 2019
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

A method and apparatus of driving a display panel, and a display device. The display panel includes a transparent display area and a non-transparent display area and a plurality of pixels formed on the display panel. In one or more embodiments, the method includes: determining a first type of picture data to be displayed in the non-transparent display area and a second type of picture data to be displayed in the transparent display area in picture data of a frame of picture; performing a sub-pixel rendering operation on the first type of picture data to obtain first rendered picture data; driving the non-transparent display area according to the first rendered picture data; and driving the transparent display area according to the second type of picture data.

First claim

The invention claimed is:

1. A method of driving a display panel, wherein the display panel comprises a transparent display area and a non-transparent display area and a plurality of pixels formed on the display panel,
the display panel further comprises a transition display area, and the transition display area is located between the transparent display area and the non-transparent display area,
the method comprising:
determining a first type of picture data to be displayed in the non-transparent display area and a second type of picture data to be displayed in the transparent display area, in a plurality of picture data of a frame of picture;
performing a sub-pixel rendering operation on the first type of picture data to obtain a plurality of first rendered picture data;
driving the non-transparent display area according to the first rendered picture data; and
driving the transparent display area according to the second type of picture data,
wherein the plurality of pixels comprises a plurality of first OLED pixels arranged in array formed on the non-transparent display area, and a plurality of second OLED pixels arranged in array and formed on the transition display area, and
an m th column of the second OLED pixels and a 2m−1 th column of the first OLED pixels share a same data line, wherein m is a natural number,
wherein a pixel area of each of the second OLED pixels is N times a pixel area of each of the first OLED pixels, wherein N is a real number greater than or equal to 4, so that a position of a pixel row where one row of the second OLED pixels is located is substantially opposite to positions of pixel rows where two adjacent rows of the first OLED pixels are located, and a position of a pixel column where one column of the second OLED pixels is located is substantially opposite to positions of pixel columns where two columns of the first OLED pixels are located,
a second pixel density of the plurality of second OLED pixels is less than a first pixel density of the plurality of first OLED pixels;
the second OLED pixels in a same row and one row of the first OLED pixels in adjacent M rows of the first OLED pixels share a same scanning line, two scanning lines of two adjacent rows of the second OLED pixels have at least one scanning line of the first OLED pixels disposed therebetween; the second OLED pixels in a same column and one column of the first OLED pixels in M columns of the first OLED pixels share a same data line, two data lines of two adjacent columns of the second OLED pixels have at least one data line of the first OLED pixels disposed therebetween, wherein M is a natural number.

2. The method of driving a display panel according to claim 1 , wherein
before driving the transparent display area according to the second type of picture data, the sub-pixel rendering operation is not performed on the second type of picture data.

3. The method of driving a display panel according to claim 1 , wherein
driving the transparent display area according to the second type of picture data comprises:
performing the sub-pixel rendering operation on the second type of picture data to obtain a plurality of second rendered picture data, and
driving the transparent display area according to the second rendered picture data.

4. The method of driving a display panel according to claim 1 , wherein
the method further comprises:
determining a third type of picture data to be displayed in the transition display area in the picture data; and
driving the transition display area according to the third type of picture data.

5. The method of driving a display panel according to claim 4 , wherein
before driving the transition display area according to the third type of picture data, the sub-pixel rendering operation is not performed on the third type of picture data.

6. The method of driving a display panel according to claim 4 , wherein
driving the transition display area according to the third type of picture data comprises:
performing the sub-pixel rendering operation on the third type of picture data to obtain a plurality of third rendered picture data;
driving the transition display area according to the third rendered picture data.

7. The method of driving a display panel according to claim 6 , wherein in the sub-pixel rendering operation of the third type of picture data, grayscale values of every P pixels in a same row of a frame of a picture data are rendered to brightness values of each pixel of a same row in a frame of a display data, wherein P is a natural number equal or greater than 3, and
there are no overlapped same pixels of the picture data for rendering different pixels of the display data.

8. The method of driving a display panel according to claim 1 , wherein
in the non-transparent display area, two adjacent rows of the first OLED pixels display corresponding two adjacent rows of the first rendered picture data, and two adjacent columns of the first OLED pixels display corresponding two adjacent columns of the first rendered picture data; and
in the transition display area, two adjacent rows of the second OLED pixels display corresponding two rows of the third rendered picture data, and at least one row of the third rendered picture data between the two rows of the third rendered picture data is not displayed; two adjacent columns of the second OLED pixels display corresponding two columns of the third rendered picture data, and at least one column of the third rendered picture data between the two columns of the third rendered picture data is not displayed.

9. The method of driving a display panel according to claim 1 , wherein
M is equal to 2, an n th row of the second OLED pixels and a 2n−1 th row of the first OLED pixels share a same scanning line, wherein n is a natural number; and
the transition display area display the third rendered picture data of alternate rows and columns, so that a position of a pixel row where one row of the second OLED pixels is located is substantially opposite to positions of pixel rows where two adjacent rows of the first OLED pixels are located, and a position of a pixel column where one column of the second OLED pixels is located is substantially opposite to positions of pixel columns where two adjacent columns of the first OLED pixels are located,
a pixel area of each of the second OLED pixels is larger than a pixel area of each of the first OLED pixels.

10. The method of driving a display panel according to claim 1 , wherein
each of the first OLED pixels comprises a plurality of sub-pixels of K colors, wherein K is a natural number;
each of the second OLED pixels comprises a plurality of sub-pixels of W colors, wherein W is a natural number;
when K is 3, each of the first OLED pixels comprises a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
when W is 3, each of the second OLED pixels comprises a red sub-pixel, a green sub-pixel, and a blue sub-pixel;
wherein, in each of the first OLED pixels, the red sub-pixel, the green sub-pixel, and the blue sub-pixel of the first OLED pixel are arranged side by side or distributed in a triangle;
in each of the second OLED pixels, the red sub-pixel, the green sub-pixel, and the blue sub-pixel of the second OLED pixel are arranged side by side or distributed in a triangle.

11. The method of driving a display panel according to claim 1 , wherein,
the transparent display area has any of the following shapes: rectangle, diamond, water drop, circle, ellipse, semicircle, or semiellipse; and
when the transparent display area has a rectangle shape, a length of the transparent display area is 3 mm, and a width of the transparent display area is 3 mm.

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Shen Zhihua
• Zhang Lu
• Wu Jianlong
• Hu Siming

Classifications

• H10K59/121

  characterised by the geometry or disposition of pixel elements · CPC title

• G09G3/3275

  Details of drivers for data electrodes · CPC title

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G2340/0457

  Improvement of perceived resolution by subpixel rendering · CPC title

• G09G3/3208 Primary

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title