Display panel, display apparatus and driving method thereof

Patent metadata

Field	Value
Publication number	US-10325545-B2
Application number	US-201815864199-A
Country	US
Kind code	B2
Filing date	Jan 8, 2018
Priority date	Sep 19, 2017
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

A display panel, a display apparatus, and a display panel driving method are provided. The display panel comprises a display region including a plurality of pixels arranged in both a first direction and a second direction. The first direction intersects the second direction, and a non-display region surrounding the display region. The display region includes at least one irregular edge intersecting both the first direction and the second direction. The plurality of pixels include a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge. A first pixel has an initial grayscale g. In a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G<g.

First claim

What is claimed is:

1. A display panel, comprising:
a display region including a plurality of pixels arranged in both a first direction and a second direction, wherein the first direction intersects the second direction; and
a non-display region surrounding the display region,
wherein:
the display region includes at least one irregular edge intersecting both the first direction and the second direction;
the plurality of pixels includes a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge;
a first pixel has an initial grayscale g;
in a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G<g;
the at least one irregular edge has a first side adjacent to the display region and a second side far away from the display region;
the first pixel is divided by the at least one irregular edge into a first region disposed on the first side of the at least one irregular edge and a second region disposed on the second side of the at least one irregular edge; and
S*g=G*SP, where SP is an area size of the first pixel, and S is an area size of the first region in the first pixel.

2. The display panel according to claim 1 , wherein:
the first pixel is a square having a side of a, and SP=a 2 , where SP is an area size of the first pixel.

3. The display panel according to claim 1 , wherein:
the at least one irregular edge is an arc having a radius of R.

4. The display panel according to claim 1 , wherein:
a pixel includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel.

5. The display panel according to claim 1 , wherein:
the display panel is a liquid crystal display panel or an organic light emitting diode display panel.

6. A display apparatus, comprising a display panel including:
a display region including a plurality of pixels arranged in both a first direction and a second direction, wherein the first direction intersects the second direction; and
a non-display region surrounding the display region,
wherein:
the display region includes at least one irregular edge intersecting both the first direction and the second direction;
the plurality of pixels includes a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge;
a first pixel has an initial grayscale g;
in a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G<g;
the at least one irregular edge has a first side adjacent to the display region and a second side far away from the display region;
the first pixel is divided by the at least one irregular edge into a first region disposed on the first side of the at least one irregular edge and a second region disposed on the second side of the at least one irregular edge; and
S*g=G*SP, where SP is an area size of the first pixel, and S is an area size of the first region in the first pixel.

7. The display apparatus according to claim 6 , further including:
a chip supplying a display voltage signal to the first pixel, such that the first pixel exhibits the display grayscale G.

8. The display apparatus according to claim 7 , wherein:
the chip includes a voltage conversion circuit, which converts the display grayscale G to a corresponding display voltage signal.

9. The display apparatus according to claim 8 , wherein:
the chip further includes a grayscale calculation circuit; and
based on the initial grayscale g of the first pixel, the area size SP of the first pixel, the area size S of the first region in the first pixel, and the equation S*g=G*SP, the grayscale calculation circuit calculates the display grayscale G for the first pixel.

10. The display apparatus according to claim 9 , wherein:
the chip further includes an image information retrieval circuit; and
the image information retrieval circuit retrieves image information for a current image frame.

11. The display apparatus according to claim 10 , wherein:
the chip further includes an image information processing circuit; and
the image information processing circuit analyzes the retrieved image information to obtain the initial grayscale g for the first pixel, the area size SP of the first pixel, and the area size S of the first region in the first pixel.

12. The display apparatus according to claim 11 , further comprising:
a first chip including the voltage conversion circuit and the grayscale calculation circuit; and
a second chip including the image information retrieval circuit and the image information processing circuit.

13. A driving method for a display panel, the display panel comprising:
a display region including a plurality of pixels arranged in both a first direction and a second direction, wherein the first direction intersects the second direction; and
a non-display region surrounding the display region,
wherein:
the display region includes at least one irregular edge intersecting both the first direction and the second direction;
the plurality of pixels includes a plurality of first pixels intersecting the at least one irregular edge and a plurality of second pixels without intersecting the at least one irregular edge;
a first pixel has an initial grayscale g;
in a display phase of the display panel, the initial grayscale g of the first pixel is adjusted to a display grayscale G, where G<g;
the at least one irregular edge has a first side adjacent to the display region and a second side far away from the display region;
the first pixel is divided by the at least one irregular edge into a first region disposed on the first side of the at least one irregular edge and a second region disposed on the second side of the at least one irregular edge; and
S*g=G*SP, where SP is an area size of the first pixel, and S is an area size of the first region in the first pixel, and
the driving method comprising:
in the display phase of the display panel, supplying a display voltage signal to the first pixel, such that the first pixel exhibits the display grayscale G, where G<g, and
based on the initial grayscale g for each first pixel, the area size SP of the first pixel, the area size S of the first region, and the equation S*g=G*SP, calculating the display grayscale G of the first pixel.

14. The driving method according to claim 13 , further including:
retrieving image information for a current image frame;
analyzing the image information to obtain the initial grayscale g for the first pixel, the area size SP of the first pixel, and the area size S of the first region in the first pixel; and
converting the display grayscale G to a corresponding display voltage signal.

Assignees

• Xiamen Tianma Micro Electronics Co Ltd

Inventors

• Zheng Binyi
• Yang Yan
• Zeng Yongping
• Wu Ling
• Shen Boping

Classifications

• G09G3/36 Primary

  using liquid crystals · CPC title

• G09G3/207 Primary

  by domain size control (G09G3/3637 takes precedence) · CPC title

• G09G2310/0232

  Special driving of display border areas · CPC title

• G09G2300/0452

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

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title