ORGANIC LIGHT-EMITTING DIODE (OLED) PIXEL STRUCTURE, DRIVING METHOD, DRIVING CIRCUIT AND DISPLAY DEVICE

• US 20180018916A1
• Filed: 10/14/2016
• Published: 01/18/2018
• Est. Priority Date: 10/16/2015
• Status: Abandoned Application

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: CHUNG, Chieh Hsing
• Application Number:
  US15/518,647
• Publication Number:
  US 20180018916A1
• Time in Patent Office: Days
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2300/0465 Improved aperture ratio, e.g. by size reduction of the pixel circuit, e.g. for improving the pixel density or the maximum displayable luminance or brightness
• CPC Class Codes: G09G 2300/0804 Sub-multiplexed active matrix panel, i.e. wherein one active driving circuit is used at pixel level for multiple image producing elements
• CPC Class Codes: G09G 2300/0819 used for counteracting undesired variations, e.g. feedback or autozeroing
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2320/0261 in the context of movement of objects on the screen or movement of the observer relative to the screen
• CPC Class Codes: G09G 2320/04 Maintaining the quality of display appearance
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/3225 using an active matrix
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/353 characterised by the geometrical arrangement of the RGB subpixels

Abstract

An organic light-emitting diode (OLED) pixel structure, a driving method, a driving circuit and a display device. The pixel structure includes a plurality of pixel units arranged in a matrix; each pixel unit includes a plurality of sub-pixels with different colors; at least two sub-pixels in each pixel unit share one compensating circuit; and different sub-pixels sharing the same one compensating circuit are respectively displayed in different periods of outputting one frame of image. The pixel structure can improve the dynamic resolution of the display device and optimize the display effect.

Claims

1. An organic light-emitting diode (OLED) pixel structure, comprising a plurality of pixel units arranged in a matrix,

wherein each pixel unit includes a plurality of sub-pixels with different colors;

at least two sub-pixels in each pixel unit share one compensating circuit; and

different sub-pixels sharing the same one compensating circuit are respectively displayed in different periods of outputting one frame of image.

2. The OLED pixel structure according to claim 1, wherein the pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel with different colors.

3. The OLED pixel structure according to claim 2, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are disposed in a same row;

and the first sub-pixel and the second sub-pixel share the same one compensating circuit.

4. The OLED pixel structure according to claim 2, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are arranged in a delta shape or in an inverted delta shape;

the first sub-pixel and the second sub-pixel, and the third sub-pixel are disposed in different rows; and

the first sub-pixel and the third sub-pixel share the same one compensating circuit.

5. The OLED pixel structure according to claim 2, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively a red sub-pixel, a green sub-pixel and a blue sub-pixel, respectively.

6. A driving method of the OLED pixel structure according to claim 1, comprising:

driving portion of sub-pixels in the pixel units to display in a first period of outputting one frame of image; and

driving remaining sub-pixels in the pixel units to display in a second period of outputting the one frame of image,

wherein the first period is not overlapped with the second period; and

at least one sub-pixel driven in the first period and at least one sub-pixel driven in the second period share the same one compensating circuit.

7. The driving method of the OLED pixel structure according to claim 6, wherein in the case where the pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel with different colors, and the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit are disposed in a same row, and the first sub-pixel and the second sub-pixel share the same one compensating circuit,

the first sub-pixel in the pixel unit is driven to display in the first period of outputting one frame of image, and the second sub-pixel and the third sub-pixel in the pixel unit are driven to display in the second period of outputting the one frame of image;

or

the first sub-pixel and the third sub-pixel in the pixel unit are driven to display in the first period of outputting one frame of image, and the second sub-pixel in the pixel unit is driven to display in the second period of outputting the one frame of image.

8. The driving method of the OLED pixel structure according to claim 6, wherein in the case where the pixel unit includes a first sub-pixel, a second sub-pixel and a third sub-pixel with different colors, and the first sub-pixel, the second sub-pixel and the third sub-pixel in the pixel unit are arranged in a delta shape or in an inverted delta shape, the first sub-pixel and the second sub-pixel, and the third sub-pixel being disposed in different rows, the first sub-pixel and the third sub-pixel sharing the same one compensating circuit,

the first sub-pixel and the second sub-pixel in the pixel unit are driven to display in the first period of outputting one frame of image, and the third sub-pixel in the pixel unit is driven to display in the second period of outputting the one frame of image;

or

the third sub-pixel in the pixel unit is driven to display in the first period of outputting one frame of image, and the first sub-pixel and the second sub-pixel in the pixel unit are driven to display in the second period of outputting the one frame of image.

9. The driving method of the OLED pixel structure according to claim 6, wherein a sum of durations of the first period and the second period is equal to duration of outputting one frame of image.

10. A driving circuit of the OLED pixel structure according to claim 1, comprising:

a first driving unit configured to drive portion of sub-pixels in the pixel units to display in the first period of outputting one frame of image; and

a second driving unit configured to drive remaining sub-pixels in the pixel units to display in the second period of outputting the one frame of image,

wherein the first period is not overlapped with the second period; and

at least one sub-pixel driven in the first period and at least one sub-pixel driven in the second period share the same one compensating circuit.

11. A display device, comprising the OLED pixel structure according to claim 1 and a driving circuit, wherein driving circuit comprises:

a first driving unit configured to drive portion of sub-pixels in the pixel units to display in the first period of outputting one frame of image; and

a second driving unit configured to drive remaining sub-pixels in the pixel units to display in the second period of outputting the one frame of image,

wherein the first period is not overlapped with the second period; and

at least one sub-pixel driven in the first period and at least one sub-pixel driven in the second period share the same one compensating circuit.

12. The OLED pixel structure according to claim 3, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively a red sub-pixel, a green sub-pixel and a blue sub-pixel, respectively.

13. The OLED pixel structure according to claim 4, wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are respectively a red sub-pixel, a green sub-pixel and a blue sub-pixel, respectively.

14. The driving method of the OLED pixel structure according to claim 7, wherein a sum of durations of the first period and the second period is equal to duration of outputting one frame of image.

15. The driving method of the OLED pixel structure according to claim 8, wherein a sum of durations of the first period and the second period is equal to duration of outputting one frame of image.