Pixel structure having common sub-pixels and OLED display panel incorporating the pixel structure

• US 10,446,618 B2
• Filed: 09/01/2016
• Issued: 10/15/2019
• Est. Priority Date: 08/31/2015
• Status: Active Grant

• Current Assignee: Kunshan Govisionox Optoelectronics Co., Ltd (Visionox Technology, Inc.)
• Original Assignee: Kunshan Govisionox Optoelectronics Co., Ltd (Visionox Technology, Inc.)
• Inventors: Wang, Xuliang, Zhu, Xiaozhao, Li, Weili, Gan, Shuaiyan, Zhu, Xiujian
• Primary Examiner(s): Whalen, Daniel
• Application Number:
  US15/756,344
• Publication Number:
  US 20180247984A1
• Time in Patent Office: 1,139 Days
• Field of Search: None
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: H01L 27/12 the substrate being other than a semiconductor body, e.g. an insulating body
• CPC Class Codes: H10K 59/352 the areas of the RGB subpixels being different
• CPC Class Codes: H10K 59/353 characterised by the geometrical arrangement of the RGB subpixels

Abstract

A pixel structure and an organic light-emitting diode (OLED) display panel incorporating the pixel structure are disclosed. The pixel structure includes a plurality of pixel units (110) arranged in an array, each pixel unit comprising a first sub-pixel (111), a second sub-pixel (112) and a third sub-pixel (113). The second sub-pixel (112) and the third sub-pixel (113) are common to four adjacent pixel units (110). As a result, a higher aperture ratio of the sub-pixels, an increased design margin and reduced process difficulty can be obtained.

Claims

1. A pixel structure, comprising a plurality of pixel units arranged in an array, each pixel unit comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, each of the second and third sub-pixels being an integral structure, the second and third sub-pixels being common to four adjacent ones of the pixel units,

wherein adjacent four third sub-pixels are arranged to define a quadrilateral encompassing one second sub-pixel and adjacent four first sub-pixels so that four pixel units are formed, wherein each of the four pixel units comprises one of the four third sub-pixels, one of the four first sub-pixels and the one second sub-pixel shared in the four pixel units, each of the four first sub-pixels located between a corresponding one of the four third sub-pixels and the one second sub-pixel shared in the four pixel units,

wherein each first sub-pixel is disposed on a line segment connecting centers of the third sub-pixel and the second sub-pixel positioned in a center of the quadrilateral, and

wherein the first sub-pixel is a rectangle, each of the second and third sub-pixels is a square, two opposite short sides of each first sub-pixel are respectively substantially aligned with corresponding sides of its adjacent second and third sub-pixels.

2. The pixel structure of claim 1, wherein short sides of each first sub-pixel are parallel to the line segment connecting centers of its adjacent second and third sub-pixels.

3. The pixel structure of claim 1, wherein the first, second and third sub-pixels in one pixel unit are symmetric to corresponding ones in an adjacent pixel unit.

4. The pixel structure of claim 1, wherein short sides of each first sub-pixel are perpendicular to the line segment connecting centers of its adjacent second and third sub-pixels.

5. The pixel structure of claim 1, wherein the first sub-pixel has an area smaller than both an area of the second sub-pixel and an area of the third sub-pixel.

6. An OLED display panel, comprising a pixel structure, the pixel structure comprising a plurality of pixel units arranged in an array, each pixel unit comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, each of the second and third sub-pixels being an integral structure, the second and third sub-pixels being common to four adjacent ones of the pixel units,

wherein adjacent four third sub-pixels are arranged to define a quadrilateral encompassing one second sub-pixel and adjacent four first sub-pixels so that four pixel units are formed, wherein each of the four pixel units comprises one of the four third sub-pixels, one of the four first sub-pixels and the one second sub-pixel shared in the four pixel units, each of the four first sub-pixels located between a corresponding one of the four third sub-pixels and the one second sub-pixel shared in the four pixel units,

wherein each first sub-pixel is disposed on a line segment connecting centers of the third sub-pixel and the second sub-pixel positioned in a center of the quadrilateral, and

wherein the first sub-pixel is a rectangle, each of the second and third sub-pixels is a square, two opposite short sides of each first sub-pixel are respectively substantially aligned with corresponding sides of its adjacent second and third sub-pixels.