OLED Display Panel, Method For Driving The Same And Display Device

Patent metadata

Field	Value
Publication number	US-2018166017-A1
Application number	US-201815890687-A
Country	US
Kind code	A1
Filing date	Feb 7, 2018
Priority date	Oct 26, 2017
Publication date	Jun 14, 2018
Grant date	—

Abstract

The present disclosure discloses an OLED display panel, a method for driving the same and a display device. A high-potential voltage and a low-potential voltage are supplied to each shift register unit through a power supply, respectively. A voltage difference between a high-potential voltage and a low-potential voltage supplied to a first shift register unit by the power supply is a first voltage difference, and a voltage difference between a high-potential voltage and a low-potential voltage supplied to a second shift register unit by the power supply is a second voltage difference. The first voltage difference differs from the second voltage difference.

First claim

1 . An organic light emitting diode (OLED) display panel, comprising a display area and a non-display area, wherein pixel circuits arranged in a matrix of rows and columns are disposed in the display area; a scan driving circuit and a power supply are disposed in the non-display area;
wherein the scan driving circuit comprises a plurality of first and second shift register units correspondingly connected with each row of the pixel circuits, and the shift register units are configured to supply a scan signal to corresponding rows of the pixel circuits; wherein the display area comprises a first display area and a second display area, wherein the plurality of first shift register units each is connected with a pixel circuit in the first display area; the plurality of first shift register units each is connected with a pixel circuit in the second display area; a quantity of pixel circuits in a row of pixel circuits in the second display area is fewer than a quantity of pixel circuits in a row of pixel circuits in the first display area; and wherein the power supply is configured to supply a high-potential voltage and a low-potential voltage to each shift register unit; wherein a first voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of first shift register units by the power supply, and a second voltage difference is supplied between a high-potential voltage and a low-potential voltage of one of the plurality of second shift register units by the power supply; wherein the first voltage difference differs from the second voltage difference.

2 . The OLED display panel according to claim 1 , wherein a value of the high-potential voltage supplied to the first shift register unit by the power supply is the same as a value of the high-potential voltage supplied to the second shift register unit by the power supply; and
a value of the low-potential voltage supplied to the first shift register unit by the power supply is different from a value of the low-potential voltage supplied to the second shift register unit by the power supply.

3 . The OLED display panel according to claim 2 , wherein the power supply supplies the high-potential voltage to each of the plurality of first shift register units and to each of the plurality of second shift register units through a first power supply line;
When the power supply supplies the low-potential voltage to each of the plurality of first shift register units through a second power supply line; and the power supply supplies the low-potential voltage to each of the plurality of second shift register units through a third power supply line.

4 . The OLED display panel according to claim 3 , wherein the first power supply line, the second power supply line and the third power supply line are disposed in a same layer.

5 . The OLED display panel according to claim 1 , wherein a value of the low-potential voltage supplied to the first shift register unit by the power supply is the same as a value of the low-potential voltage supplied to the second shift register unit by the power supply; and
a value of the high-potential voltage supplied to the first shift register unit by the power supply is different from a value of the high-potential voltage supplied to the second shift register unit by the power supply.

6 . The OLED display panel according to claim 5 , wherein the power supply supplies the low-potential voltage to each of the plurality of first shift register units and to each of the plurality of second shift register units through a first power supply line;
the power supply supplies the high-potential voltage to each of the plurality of first shift register units through a second power supply line; and the power supply supplies the high-potential voltage to each of the plurality of second shift register units through a third power supply line.

7 . The OLED display panel according to claim 6 , wherein the first power supply line, the second power supply line and the third power supply line are disposed in a same layer.

8 . The OLED display panel according to claim 1 , wherein a value of the low-potential voltage supplied to the first shift register unit by the power supply is different from a value of the low-potential voltage supplied to the second shift register unit by the power supply; and
a value of the high-potential voltage supplied to the first shift register unit by the power supply is different from a value of the high-potential voltage supplied to the second shift register unit by the power supply.

9 . The OLED display panel according to claim 8 , wherein the power supply supplies the low-potential voltage to each of the plurality of first shift register units through a first power supply line;
the power supply supplies the low-potential voltage to each of the plurality of second shift register units through a second power supply line; the power supply supplies the high-potential voltage to each of the plurality of first shift register units through a third power supply line; and the power supply supplies the high-potential voltage to each of the plurality of second shift register units through a fourth power supply line.

10 . The OLED display panel according to claim 9 , wherein the first power supply line, the second power supply line, the third power supply line and the fourth power supply line are disposed in a same layer.

11 . The OLED display panel according to claim 4 , wherein the display panel further comprises data lines connected with each column of the pixel circuits; and
each of the power supply lines and the data lines are disposed in a same layer.

12 . The OLED display panel according to claim 7 , wherein the display panel further comprises data lines connected with each column of the pixel circuits; and
each of the power supply lines and the data lines are disposed in a same layer.

13 . The OLED display panel according to claim 10 , wherein the display panel further comprises data lines connected with each column of the pixel circuits; and
each of the power supply lines and the data lines are disposed in a same layer.

14 . The OLED display panel according to claim 1 , wherein the second display area is located on top or bottom of the first display area, and the second display area is divided into a first subarea and a second subarea, wherein part of the pixel circuits in each row of the pixel circuits in the second display area are located in the first subarea, and the remaining part of pixel circuits are located in the second subarea; and
the display panel further comprises a special-shaped area; and the first subarea and the second subarea are separated by the special-shaped area.

15 . The OLED display panel according to claim 14 , wherein the first subarea and the second subarea are symmetrically disposed.

16 . A display device, comprising an organic light emitting diode (OLED) display panel, wherein the OLED display panel comprises a display area and a non-display area, pixel circuits arranged in a matrix of rows and columns are disposed in the display area; a scan driving circuit and a power supply are disposed in the non-display area;
wherein the scan driving circuit comprises a plurality of first and second shift register units correspondingly connected with each row of the pixel circuits, and the shift register units are configured to supply a scan signal to corresponding rows of the pixel circuits; wherein the display area comprises a first display area and a second display area, wherein the plurality of first shift register units

Assignees

• Shanghai Tianma Am Oled Co Ltd

Inventors

• Li Yue
• Xiang Dongxu
• Zhu Renyuan
• Gao Yana
• Zhou Xingyao

Classifications

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title

• G09G2310/0262

  The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G3/3266

  Details of drivers for scan electrodes · CPC title

• G09G2310/0251

  Precharge or discharge of pixel before applying new pixel voltage · CPC title